Consulta: year:"2013"
Registros recuperados: 11.860
Máximo de registros impressos: 2500
Data/hora: 31/10/2024 22:00:49

Os custos de produção e a rentabilidade da soja nos municípios de Santarém e Belterra, estado do Pará
Provedor de dados: 36
Autores: Oliveira,Cyntia Meireles de; Santana,Antônio Cordeiro de; Homma,Alfredo Kingo Oyama.
O artigo teve por objetivo analisar os custos de produção da soja, nos municípios de Santarém e Belterra, considerando que, este é um critério competitivo básico para determinar a eficiência operacional, bem como para a formação de vantagens competitivas sustentáveis. Para tanto, a análise foi realizada a partir da percepção de 20 produtores sobre os conceitos e aplicação dos custos fixos e variáveis, utilizados nas decisões de produzir. Entre os produtores, 18 utilizam tecnologia mecânica e de insumos modernos, porém não empregam práticas conservacionistas. Também não computam grande parte dos custos fixos para determinar o lucro, um indicador de desempenho competitivo. As unidades de produção com produtividade de até 2.400 kg ha-1 (40 sacas de 60 kg...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Produtividade; Receita líquida; Soja na Amazônia.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000100004

Farinha de folha de leucena (Leucaena leucocephala Lam. de wit) como fonte de proteína para juvenis de tambaqui (Colossoma macropomum CUVIER, 1818)
Provedor de dados: 36
Autores: Pereira Junior,Geraldo; Pereira Filho,Manoel; Roubach,Rodrigo; Barbosa,Paula de Sousa; Shimoda,Eduardo.
O tambaqui (Colossoma macropomum) é um peixe onívoro, natural da bacia amazônica, que possui elevado valor comercial. Características de rusticidade e desempenho produtivo destacam esta espécie para criação em cativeiro. Contudo, em criações comerciais de peixes, os custos com alimentação podem corresponder de 60 a 80% dos custos totais de produção, sendo a proteína o nutriente mais caro da dieta. O objetivo deste trabalho foi avaliar o desempenho produtivo de juvenis de tambaqui alimentados com rações contendo farinha de folha de leucena como fonte protéica. 240 juvenis foram distribuídos em 12 aquários experimentais (350 L), em um delineamento experimental inteiramente casualizado com quatro tratamentos (0%, 8%, 16%, 24% de inclusão de farinha de folha...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Piscicultura; Nutrição de peixes; Proteína.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000200014

Geoquímica de rios de água preta do sudeste do Amazonas: origem, fluxo dos elementos e consumo de CO2
Provedor de dados: 36
Autores: Lages,Anderson da Silva; Horbe,Adriana Maria Coimbra; Moquet,Jean-Sébastien.
Neste trabalho foi examinada a composição química das águas dos afluentes da margem direita do rio Madeira que drenam as rochas do Escudo Brasileiro. O estudo foi realizado no município de Apuí no sudeste do estado do Amazonas, Brasil. Foram analisados pH, condutividade, as concentrações de SiO2 e de íons dissolvidos (Na+, K+, Mg2+, Ca2+, HCO3-, Cl-, NO3- e SO4(2-)) em quatro épocas do ano segundo o índice pluviométrico: chuvosa, transição para a estiagem, estiagem e transição para a chuvosa. As águas são diluídas, mais concentradas em HCO3- e SiO2 e representam o típico ambiente de intensa lixiviação que afeta as rochas na Amazônia. Apesar da química das águas terem influência da sazonalidade, foram identificadas variações em função da litologia. As taxas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Variação sazonal; Exportação de cátions; Erosão química.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000300010

Essential oils of the Sextonia rubra (Mez ) van der Werff (Lauraceae)
Provedor de dados: 36
Autores: Alcântara,Joelma Moreira; Yamaguchi,Klenicy Kazumi; Veiga Junior,Valdir Florêncio da.
The essential oils of the leaves and branches of Sextonia rubra were obtained by hydrodistillation and analyzed by GC-FID and GC-MS. In the leaves were identified as the major constituents α-pinene (21.7%), β-pinene (15.4%), α-copaene (12.5%) and germacrene D (12.1%). In the branches essential oil, α-copaene (22.9%), β-selinene (7.9%) and β-elemene (7.2%) were identified as the most abundant constituents. This paper describes for the first time the composition of these essential oils.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazonia; Pinene; Copaene; Caryophyllene; Louro gamela.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000100014

Abelhas-sem-ferrão amazônicas defendem meliponários contra saques de outras abelhas
Provedor de dados: 36
Autores: Rech,André Rodrigo; Schwade,Mauricio Adu; Schwade,Mayá Regina Müller.
Entre as abelhas eussociais, dois gêneros apresentam estratégia de vida cleptobiótica, obtendo recursos alimentares de ninhos de outras abelhas ao invés de coletá-los em flores. Entre as espécies atacadas existe um gradiente de suscetibilidade ao roubo variando desde espécies vulneráveis até altamente resistentes. Neste trabalho nós descrevemos um ataque de Lestrimelitta rufipes a um ninho de Scaptotrigona sp. em um meliponário na Amazônia central (Amazonas, Brazil). O ninho atacado foi transferido para um meliponário com espécies resistentes (Duckeola ghilianii e Melipona fulva) e as interações foram descritas. As abelhas resistentes contra-atacaram e afugentaram as ladras protegendo o ninho de Scaptotrigona sp.. A presença de comportamento defensivo em...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cleptobiose; Comportamento de defesa; Amazônia; Abelha sem ferrão; Meliponini.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000300016

Avaliação de risco ambiental por contaminação metálica e material orgânico em sedimentos da bacia do Rio Aurá, Região Metropolitana de Belém - PA
Provedor de dados: 36
Autores: Siqueira,Gilmar W.; Aprile,Fabio.
A bacia do Rio Aurá está situada na região metropolitana de Belém, entre os municípios de Belém e Ananindeua, onde a taxa populacional tem aumentado sem qualquer medida de controle social ou ambiental. A região é intensamente explorada, sendo que os principais problemas ambientais são o desmatamento, erosão, inundação, poluição e contaminação das águas, especialmente por metais pesados e compostos orgânicos. O comportamento geoquímico dos elementos Al, Fe, Mn, Cr, Ni e Cu e os teores de compostos orgânicos foram avaliados em 30 pontos de amostragem no período entre 2008 e 2010 nos sedimentos fluviais. O aterro sanitário não controlado localizado nas proximidades da bacia do Rio Aurá é responsável, em parte, pela contaminação dos sedimentos. O estresse...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Metais pesados; Saneamento; Vulnerabilidade; Geoquímica; Amazônia.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000100007

Composição mineral e sintomas visuais de deficiências de nutrientes em plantas de pimenta-longa (Piper hispidinervum C. DC.)
Provedor de dados: 36
Autores: Veígas,Ismael de Jesus Matos; Sousa,Gizele Odete de; Silva,Adelícia Fernandes da; Carvalho,Janice Guedes de; Lima,Martinha Moura.
A pimenta-longa (Piper hispidinervum C. DC.) é uma das principais fontes alternativas para a produção de safrol empregado como matéria prima na fabricação de inseticidas naturais e aromatizantes. O objetivo da pesquisa foi avaliar o efeito da omissão dos macronutrientes e micronutrientes, sobre a composição mineral de plantas de pimenta-longa, e caracterizar os sintomas de deficiências decorrentes dessa limitação, utilizando-se da técnica do elemento faltante. O experimento foi conduzido em casa de vegetação, com quatro repetições e doze tratamentos, completo e omissão individual de N, P, K, Ca, Mg, S, B, Cu, Fe, Mn e Zn em delineamento inteiramente ao acaso. Os valores dos teores foliares nos tratamentos com omissão dos nutrientes foram inferiores àqueles...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nutrição de plantas; Sintomas de deficiência; Piperácea.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000100006

Brachyuran crustaceans from the bycatch of prawn fisheries at the mouth of the Amazon river
Provedor de dados: 36
Autores: Lima,Jô de Farias; Silva,Thibério Carvalho da; Silva,Luis Mauricio Abdon da; Garcia,Jamile da Silva.
The present paper is a pioneering study on the Brachyura bycatch associated with the artisan prawn fisheries at the mouth of the Amazon River. The study was conducted at four collection sites distributed along the mouth of the Amazon River between the months of January/2009 and January/2010. The animals were caught using handcrafted traps called "matapi", which are used by prawn fisherman in the region. Twenty matapis were used at each collection site. A total of 145 specimens were captured and six species were identified, all belonging to the Trichodactylidae family - Sylviocarcinus maldonadoensis, S. pictus, S. devillei, Valdivia serrata, Dilocarcinus septemdentatus and D. pagei. The most representative species, S. maldonadoensis, S. pictus and S....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Macrobrachium; Prawn fishing; Crustaceans; Amazon region; Trichodactylidae.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000100011

Tocopherol profile of Brazil nut oil from different geographic areas of the Amazon region
Provedor de dados: 36
Autores: Funasaki,Mariko; Menezes,Ingrid Sabino; Barroso,Hiléia dos Santos; Zanotto,Sandra Patricia; Carioca,Cláudia Regina Ferreira.
The tocopherol content of Brazil nut oil from different Amazon regions (Manicoré-AM, Rio Preto da Eva-AM, São João da Baliza-RR, Caroebe-RR, Belém-PA, and Xapurí-AC) was investigated by normal-phase high-performance liquid chromatography. For all authentic oils, two isomers: α- and γ-tocopherols were observed (37.92-74.48 µg g-1, 106.88-171.80 µg g-1, respectively), and their levels were relatively constant among the oils having these geographic origins, which would enable to distinguish Brazil nut oil from other plant oils for authentication purposes. Commercial Brazil nut oils were also evaluated, and some of these oils demonstrated a tocopherol content that was very different from that of the authentic oils. Therefore, we suggest that the tocopherol...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bertholletia excelsa H.B.K.; Amazonian vegetable oil; Quality control; Authenticity.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000400012

Classificação morfofuncional dos dentes de saguis-de-tufo-branco (Callithrix jacchus, Callitrichidae), saguis-de-tufo-preto (C. penicillata) e saguis-de-cara-branca (C. geoffroyi)
Provedor de dados: 36
Autores: Bertassoli,Bruno Machado; Silva,Luana Célia Stunitz da; Oliveira,Franceliusa Delys de; Santos,Amilton Cesar dos; Mançanares,Celina Almeida Furlanetto; Assis Neto,Antônio Chaves de.
Realizou-se um estudo para analisar morfologicamente os dentes do saguis-de-tufo-branco (C. jacchus), saguis-de-tufo-preto (C. penicillata) e saguis-de-cara-branca (C. geoffroyi), para compara-los entre si e com outras espécies já descritas na literatura. Utilizou-se dentes das três espécies para analises macroscópicas, microscópicas e ultraestrutural e os resultados correlacionados com os obtidos com outras espécies citadas na literatura. Chegou-se a conclusão de que: as três espécies apresentaram uma fórmula dentária idêntica, chegando a um total de 32 dentes, expressa na fórmula 2x: incisivos 2/2; caninos 1/1; pré-molares 3/3 e molares 2/2, estes são classificados como diplodontes, anelodontes, bunodontes, e braquiodontes.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alimentação; Calitriquídeos; Fórmula dentaria de primatas; Odontologia.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000300014

Ocorrência de flebotomíneos (Diptera: Psychodidae: Phlebotominae) no ambiente peridomiciliar em área de foco de transmissão de leishmaniose tegumentar no município de Manaus, Amazonas
Provedor de dados: 36
Autores: Reis,Sônia Rolim; Gomes,Luis Henrique Monteiro; Ferreira,Natália Mota; Nery,Liliane da Rocha; Pinheiro,Francimeire Gomes; Figueira,Luanda de Paula; Soares,Fabiane Veloso; Franco,Antonia Maria Ramos.
A leishmaniose é uma antropozoonose com focos naturais, nos quais a infecção é mantida em ecótopos silvestres entre a população de vetores e seus hospedeiros vertebrados. Neste estudo foram identificadas espécies de flebotomíneos envolvidas na transmissão de leishmaniose tegumentar no Bairro Cidade de Deus, onde há focos da doença humana e animal. O bairro está situado à margem da reserva florestal Adolpho Ducke. Foram capturados 122 espécimens em épocas variadas, utilizando-se armadilhas luminosas do tipo CDC. As espécies de flebotomíneos mais encontradas foram Lutzomyia umbratilis, L. rorotaensis e L. olmeca nociva. Nas proximidades de uma das residências onde foram realizadas as coletas de flebotomíneos, verificou-se descarte de resíduos orgânicos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Manaus; Leishmania; Vetores.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000100016

The mineralogy and chemistry of the German and Portuguese tiles used to face a historic building in the Amazon region and their natural susceptibility to tropical weathering
Provedor de dados: 36
Autores: Costa,Marcondes L. da; Sanjad,Thais A.B.C.; Paiva,Rosildo S.
During the 19th century, the most prominent buildings of the city of Belém were faced entirely with tiles manufactured in Portugal and Germany, which now exhibit distinct degrees of degradation. The Pinho mansion is one of the most important of these buildings and was selected for the investigation of the action of the tropical Amazonian climate on the degradation of the tiles. To achieve this objective, the tiles were mapped for organic and inorganic degradation, and samples were collected for analysis. The minerals were determined by XRD, the chemical composition by classical wet methods and SEM/EDS, and the microorganisms under the microscope. The results show that the German and Portuguese tiles are quite different in their composition. While both...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: German and Portuguese tiles; Degradation; Tropical weathering; Amazon region.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000300008

Atividade biológica de extratos acetato de etila, etanólico e aquoso de timbó (Lonchocarpus floribundus) sobre carrapato bovino
Provedor de dados: 36
Autores: Machado,Aaron Ferreira; Castro e Silva,Ademir; Ribeiro,Helena Camarão Telles; Procópio,Aldo Rodrigues de Lima; Pinheiro,Carlos Cleomir de Souza; Martins,João Ricardo de Souza; Silva,Wilson Castro.
Os extratos acetato de etila, etanólico e aquoso de raízes de Lonchocarpus floribundus foram utilizados, a fim de avaliar a atividade biológica sobre carrapato bovino. Carrapatos adultos foram coletados em bovinos infestados artificialmente, separados em grupos de dez indivíduos, pesados e imersos, separadamente, nos extratos de raízes de L. Floribundus, nas concentrações de 5, 25, 50, 75 e 100 mg mL-1. Para a avaliação em larvas, foram utilizados indivíduos de 14 a 21 dias, os quais foram imersos nos extratos nas concentrações de 1, 5, 10, 15 e 20 mg mL-1. Após o tratamento, cada grupo foi colocado em placa de Petri e incubado a 27 ± 1 ºC e umidade relativa de 80 ± 5%. Os extratos avaliados não foram eficazes para induzir, acima de 50%, a mortalidade de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Extratos vegetais; Carrapato; Fêmeas ingurgitadas; Rhipicephalus (Boophilus) microplus.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000200002

Monitoramento da biodeterioração da madeira de três espécies amazônicas pela técnica da colorimetria
Provedor de dados: 36
Autores: Stangerlin,Diego Martins; Costa,Alexandre Florian da; Gonçalez,Joaquim Carlos; Pastore,Tereza Cristina Monteiro; Garlet,Alencar.
Objetivou-se avaliar o emprego da colorimetria na caracterização da biodeterioração das madeiras de marupá, jequitibá e cumaru submetidas ao ataque de fungos de podridão branca e parda. Para tanto, corpos de prova de cada espécie amazônica foram submetidos a ensaios de apodrecimento acelerado, de acordo com a American Society for Testing and Materials - ASTM D2017, durante 20 semanas. Os parâmetros colorimétricos L* (luminosidade), a* (coordenada verde-vermelho), b* (coordenada amarelo-azul) e a variação total da cor (∆E) foram determinados semanalmente até a quarta semana, e posteriormente a cada duas semanas até a vigésima semana, com auxílio de um espectrofotocolorímetro. Adicionalmente, foram determinadas as perdas de massa dos corpos de prova. Os...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Durabilidade natural; Parâmetros colorimétricos; Podridão branca; Podridão parda; Madeiras tropicais.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000400004

Competição assimétrica e o incremento diamétrico de árvores individuais de Cedrela odorata L. na Amazônia ocidental
Provedor de dados: 36
Autores: Cunha,Thiago Augusto da; Finger,César Augusto Guimarães.
Um modelo de crescimento dependente e independente da distância foi ajustado para avaliar como variáveis de competição explicam a variação do crescimento periódico em diâmetro de 132 árvores de cedro (Cedrela odorata). Utilizando a abordagem de crescimento potencial relativo (PRI), estimou-se o incremento relativo em diâmetro (IRd) a partir do produto do crescimento máximo em diâmetro (incremento potencial) e da função modificada (porção do crescimento reduzido). A significância do modelo do crescimento reduzido ajustado demonstrou influência da competição assimétrica sobre o crescimento em diâmetro, explicando 71% do total da variação e também revelou que a resposta à competição não foi constante, mas variou entre as diferentes classes de tamanho dos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Incremento periódico em diâmetro; Índices de morfometria; Índices de competição.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000100002

Nitrogênio mineral e microbiano do solo em sistemas agroflorestais com palma de óleo na Amazônia oriental
Provedor de dados: 36
Autores: Santiago,Willen Ramos; Vasconcelos,Steel Silva; Kato,Osvaldo Ryohei; Bispo,Carlos José Capela; Rangel-Vasconcelos,Lívia Gabrig Turbay; Castellani,Débora Cristina.
O sucesso da produção de palma de óleo (Elaeis guineensis Jacq.) em sistemas agroflorestais (SAFs) na Amazônia está condicionado ao manejo sustentável do solo, em especial dos atributos químicos e microbiológicos. Nosso objetivo foi avaliar o impacto de SAFs com palma de óleo sobre os teores de nitrogênio (N) mineral e microbiano do solo, em função da sazonalidade pluviométrica. Avaliamos diferentes formas de N do solo (N microbiano, nitrato, amônio), além da concentração de carbono (C) do solo, em SAFs com baixa e alta diversidade de espécies cultivadas, os quais foram comparados com uma floresta secundária adjacente de 13 anos de idade. Para a maioria das variáveis analisadas (N total, relação C:N, N microbiano, relação N microbiano:N total, amônio)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amônio; Dendezeiro; Elaeis guineensis; Nitrato.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000400001

Density-dependent morphological plasticity and trade-offs among vegetative traits in Eichhornia crassipes (Pontederiaceae)
Provedor de dados: 36
Autores: Andrade,Eleonora Alvarenga; Barbosa,Mário Eduardo Avelar; Demetrio,Guilherme Ramos.
Density-dependent responses are an important component of the organism life-history, and the resource allocation theory is a central concept to the life-history theory. When resource allocation varies due to environmental changes, a plant may change its morphology or physiology to cope with the new conditions, a process known as phenotypic plasticity. Our study aimed to evaluate how plant density affects Eichhornia crassipes allocation patterns. A total of 214 individuals in high and low density were collected. The density effect was observed in all plant traits examined including biomass accumulation. All traits of E. crassipes demonstrated higher values in high density conditions, except for biomass of leaves. Density exhibited a high influence on...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phenotypic plasticity; Plant-environment relationships; Plastic morphology; Macrophyte.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000400007

Cryptic species in Pagamea coriacea sensu lato (Rubiaceae): evidence from morphology, ecology and reproductive behavior in a sympatric context
Provedor de dados: 36
Autores: Esteves,Samantha de Miranda; Vicentini,Alberto.
In this study we explore morphological and ecological variation in sympatric populations of Pagamea coriacea s.l. - a species complex from white-sand vegetation in the Amazon. A total of 147 trees were sampled and monitored at three nearby sites in Central Amazon, Brazil. Multivariate analyses of morphology indicated two distinct groups (A and B), which also differed in bark type, each containing subgroups associated with sexual dimorphism. However, a single hermaphroditic individual was observed within group B. As expected, all pistillate plants produced fruits, but 23% of the staminate plants of group B, and 5% of group A also produced fruits. This variation suggests that the sexual systems of both groups are between dioecy and gynodioecy. There was an...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Population ecology; Species delimitation; Reproductive system variation; White-sand forests; Amazonia.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000400003

Níveis críticos e faixas de suficiência nutricional em laranjeira-pêra na Amazônia Central obtidas pelo método DRIS
Provedor de dados: 36
Autores: Dias,Jairo Rafael Machado; Tucci,Carlos Alberto Franco; Wadt,Paulo Guilherme Salvador; Silva,Aldilane Mendonça da; Santos,José Zilton Lopes.
A avaliação do estado nutricional da laranjeira depende da definição de valores de referência que sejam adequados para refletir suas condições nutricionais. Neste trabalho, objetivou-se determinar os valores de referências e avaliar o estado nutricional de laranjeiras-pêra em diversas glebas na Amazônia Central (municípios de Iranduba, Manacapuru, Manaus, Presidente Figueiredo e Rio Preto da Eva). Utilizou-se o Sistema Integrado de Diagnose e Recomendação de relações multivariadas (DRIS) para estabelecer os valores de referência nutricional. O diagnóstico nutricional de 120 glebas comerciais de laranjeiras-pêra, enxertadas em limoeiro cravo foram avaliadas pelas faixas de suficiência definidas a partir do conjunto de plantas nutricionalmente equilibradas....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citrus sinensis; Estado nutricional; Diagnose foliar; Monitoramento nutricional.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000300001

Desempenho produtivo de juvenis de tambaqui (Colossoma macropomum Cuvier, 1818) alimentados com rações contendo farinha de crueira de mandioca (Manihot esculenta, Crantz) em substituição ao milho (Zea mays)
Provedor de dados: 36
Autores: Pereira Junior,Geraldo Pereira; Pereira,Expedita Maria de Oliveira; Pereira Filho,Manoel; Barbosa,Paula de Sousa; Shimoda,Eduardo; Brandão,Lian Valente.
O objetivo deste estudo foi avaliar o desempenho produtivo de juvenis de tambaqui (Colossoma macropomum), alimentados com níveis crescentes de farinha de crueira de mandioca, Manihot esculenta (0%, 20%, 40%, 60%, 80%, 100%), como substituto do milho (Zea mays). Os peixes (peso médio inicial de 6,6 ± 0,1 g) foram distribuídos aleatoriamente em 24 grupos (20 peixes/grupo) e alimentados com as dietas experimentais em quatro repetições para avaliação da performance de crescimento, eficiência alimentar, composição corporal e os custos de produção. As performances de crescimento não foram afetados pelos tratamentos. O teor de lipídio no músculo foi diferentemente significativo em peixes alimentados com 40% e 100% em relação aos outros tratamentos. O custo de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Piscicultura; Nutrição de peixes; Carboidratos.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000200013

Ocorrência de papilomavírus humano na cérvice uterina de mulheres da região ocidental da Amazônia Brasileira
Provedor de dados: 36
Autores: dos Santos,Jéfferson Castro; Cezar,Marinês Rodrigues dos Santos; Lisboa,Maillene Rodrigues; Moura,Maria Manuela da Fonseca.
A ocorrência do papiloma vírus humano (HPV) é um problema de saúde pública, pois tem sido associado ao câncer. O objetivo da pesquisa foi identificar a ocorrência de papilomavírus humano na cérvice uterina de mulheres da região ocidental da Amazônia Brasileira. O estudo foi realizado na capital de Rondônia, Porto Velho. Foram identificados os tipos de HPV e resultados moleculares foram correlacionados com aqueles os testes colpocitológicos de amostras provenientes de 334 mulheres que realizaram exames preventivos no Sistema Único de Saúde. Obteve-se o material genético viral do papilomavírus humano (DNA-HPV) e o fragmento de 450 pb da região conservada do gene L1 amplificado e submetido à análise do polimorfismo dos fragmentos de restrição (RFLP). Das 334...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reação em Cadeia da Polimerase; Câncer urogenital; Papilomavírus humano; Biologia molecular.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000200008

Estoque de nutrientes sob diferentes sistemas de uso do solo de Colorado do Oeste-RO
Provedor de dados: 36
Autores: Magalhães,Sulamirtes Suellem de Amorim; Weber,Oscarlina Lúcia dos Santos; Santos,Carlos Henrique dos; Valadão,Franciele Caroline de Assis.
A substituição da floresta por outro tipo de uso do solo pode levar a perdas significativas na matéria orgânica do solo, alterando sua dinâmica e como consequência alterando as entradas e saídas de nutrientes do sistema. Neste trabalho o objetivo foi avaliar o estoque de nutrientes em diferentes sistemas de uso de solo em Colorado do Oeste-RO. Os sistemas avaliados foram o agroflorestal (teca e cacau), florestal (teca com cinco anos), teca com oito anos, agrossilvopastoril (teca, cacau e pasto) e pastagem tendo a mata nativa como referência. Em cada sistema foram abertas três minitrincheiras, nas quais foram coletadas amostras deformadas e indeformadas nas profundidades de 0 a 5, 5 a 10, 10 a 20 e 20 a 30 cm. Nessas amostras foram determinados os...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sistemas agroflorestais; Matéria orgânica; Fertilidade do solo.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000100008

Efeito da quantidade de proteína na dieta e treinamento físico sobre parâmetros fisiológicos e zootécnicos de matrinchã (Brycon amazonicus, Günther 1869)
Provedor de dados: 36
Autores: Ferreira,Márcio Soares; Aride,Paulo Henrique Rocha; Silva,Maria de Nazaré Paula da; Val,Adalberto Luis.
O objetivo do presente estudo foi avaliar a interação entre os efeitos do treinamento físico e da quantidade de proteína na dieta sobre a hematologia; a composição corpórea de proteínas, lipídeos e cinzas; o consumo alimentar, o ganho de massa e fator de conversão; o desempenho natatório e a resistência ao estresse causado pela hipóxia em exemplares de matrinchã. Os resultados indicam que a hematologia e o desempenho natatório não são alterados pelo treinamento físico ou pela concentração de proteína na dieta, porém, a resistência à hipóxia é aumentada pelo treinamento, como indicado por menores elevações dos níveis de glicose. O aumento da quantidade de proteína na dieta e o treinamento melhoram a conversão alimentar e o ganho de massa dos animais,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Exercício físico; Ganho de massa; Hematologia; Resistência à hipóxia.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000400005

Florestas estacionais e áreas de ecótono no estado do Tocantins, Brasil: parâmetros estruturais, classificação das fitofisionomias florestais e subsídios para conservação
Provedor de dados: 36
Autores: Haidar,Ricardo Flores; Fagg,Jeanine Maria Felfili; Pinto,José Roberto Rodrigues; Dias,Ricardo Ribeiro; Damasco,Gabriel; Silva,Lucas de Carvalho Ramos; Fagg,Christopher William.
O objetivo deste estudo foi descrever a riqueza, estrutura e diversidade de espécies arbóreas em áreas de Floresta Estacional e ecótono (Floresta Estacional/Floresta Ombrófila) no estado do Tocantins, buscando subsídios para a conservação, manejo florestal, compensação de reserva legal e recuperação ambiental, além de discutir as identidades fitogeográficas em comparação com outras florestas do Brasil. Em 18 bacias hidrográficas, conduziu-se amostragem da vegetação arbórea (DAP &gt; 5 cm) de 22 áreas (amostras) por meio do inventário de 477 parcelas de 400 m². Foram elaboradas análises de classificação pelo método TWINSPAN, em duas escalas distintas. A primeira avaliou a diversidade beta entre as parcelas amostradas no estado do Tocantins e a segunda...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversidade beta; Fitogeografia; Tensão Ecológica; Cerrado; Amazônia.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000300003

Avaliação do programa de controle da tuberculose em cenário Amazônico: desafios em Coari
Provedor de dados: 36
Autores: Heufemann,Nicolás Esteban Castro; Gonçalves,Maria Jacirema Ferreira; Garnelo,Maria Luiza.
Pesquisa avaliativa, tipo estudo de caso, do contexto e grau de implantação do Programa de Controle da Tuberculose (PCT) no município de Coari, Amazonas, 2001-2008. As técnicas de pesquisa conjugaram abordagens quantitativa e qualitativa, com uso de modelo lógico e matriz de julgamento. O componente quantitativo utilizou dados do Sistema de Informação de Agravos de Notificação e dados populacionais do Departamento de Informática do Sistema Único de Saúde. As variáveis foram, idade, sexo, forma clínica, procedência, tipo de entrada, meios diagnósticos e situação de encerramento. Para a população foram feitos cálculos de interpolação geométrica, por faixa etária, sexo e procedência (urbana e rural). O componente qualitativo combinou técnicas e fontes:...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atenção Primária à Saúde; Tuberculose; Avaliação de Programas e Projetos de saúde.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000100005

Puberty in male collared peccary (Pecari tajacu) determined by quantitative analysis of spermatogenic cells
Provedor de dados: 36
Autores: Guimarães,Diva Anelie; Cardoso,Deise de Lima; Ferreira,Maria Auxiliadora Pantoja; Albuquerque,Natália Inagaki de.
Biological studies are necessary for the management of wildlife in captivity, and knowledge of reproduction is one of the important features for increasing production. The objective of the research was to determine the age at which male collared peccaries reach puberty. Testicular samples of 15 animals, aged 7 to 16 months, distributed into five groups (G1, G2, G3, G4 and G5) were used. The testes showed considerably increased weight, length and width (p &lt; 0.05) from G1 to G3, whereas, from this group onward, the development of this organ was slower. There was positive correlation (p &lt; 0.001) between the following testicular parameters: weight and length (r = 0.97), weight and width (r = 0.88), length and width (r = 0.92). Regarding the diameter of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reproduction; Testicles; Spermatogenesis; Tayassuidae.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000100012

Obtenção e caracterização de carvão ativado de caroço de buriti (Mauritia flexuosa L. f.) para a avaliação do processo de adsorção de cobre (II)
Provedor de dados: 36
Autores: Pinto,Marcos Vinicios de Souza; Silva,Denilson Luz da; Saraiva,Augusto César Fonseca.
Na região amazônica, algumas indústrias despejam cobre nos corpos receptores que, em elevadas concentrações, é tóxico para os seres vivos. A remoção de cobre de efluentes industriais é realizada por diversos processos como a adsorção. Neste trabalho mostrou-se o resultado da adsorção de cobre (II) em carvão ativado de caroço de buriti carbonizado a 400 °C e ativado a 900 °C. O carvão ativado foi caracterizado em termos de área específica, tamanho dos poros, densidades aparente e real, porosidade, microscopia eletrônica de varredura, conteúdo de cinzas, pH, umidade, carbono fixo e grupos funcionais de superfície. O estudo de equilíbrio de adsorção avaliou a influência do diâmetro das partículas do carvão, do tempo de contato adsorvente/adsorbato, do pH e da...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Adsorção; Cu (II); Carvão Ativado; Buriti.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000100009

Daldinia eschscholtzii (Ascomycota, Xylariaceae) isolated from the Brazilian Amazon: taxonomic features and mycelial growth conditions
Provedor de dados: 36
Autores: Yuyama,Kamila Tomoko; Pereira,Jadergudson; Maki,Cristina Sayuri; Ishikawa,Noemia Kazue.
The Amazon has a high diversity of fungi, including species of the genus Daldinia (Ascomycota, Xylariaceae), which produce secondary metabolites with recognized nematicidal and antimicrobial activity. The ecological role of Daldinia is important, as stromata serve as refuges to many insects and arthropodes, and the fungi contribute to the degradation of vegetable organic matter. The aim of this study was to analyze the taxonomic features and mycelial growth conditions in vitro of a Daldinia specimen collected in the Brazilian Amazon. Morphological and molecular studies of the fungus identified it as D. eschscholtzii. To evaluate mycelial growth, we cultivated the fungus at 20, 25, 30, 35, and 40 °C in malt extract-peptone agar (MEPA), malt extract-peptone...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Daldinia eschscholzii; Fungal diversity; Macrofungus; Occurrence.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000100001

Identification of duplicates of cassava accessions sampled on the North Region of Brazil using microsatellite markers
Provedor de dados: 36
Autores: Moura,Elisa Ferreira; Farias Neto,João Tomé de; Sampaio,José Edson; Silva,Diehgo Tuloza da; Ramalho,Girena Fernandes.
Duplicates are common in germplasm banks and their identification is needed to facilitate germplasm bank management and to reduce maintenance costs. The aim of this work was to identify duplicates of cassava from a germplasm bank in Eastern Amazon, which had been previously characterized both morphological and agronomically. In order to be genotyped with 15 microsatellite loci, 36 accessions were selected. These accessions were classified into 13 groups of similar morpho-agronomical characteristics. All loci were polymorphic, and 75 alleles were identified, with an average of five alleles per loci and H E = 0.66. There were determined 34 pairs of genotypes with identical multiloci profiles and the probability of genetic identity was 1.1x10-12 with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Manihot esculenta; Germplasm; Molecular markers.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000400008

Fauna parasitária de tambaqui Colossoma macropomum (Characidae) cultivado em tanque-rede no estado do Amapá, Amazônia oriental
Provedor de dados: 36
Autores: Santos,Evandro Freitas; Tavares-Dias,Marcos; Pinheiro,Douglas Anadias; Neves,Ligia Rigôr; Marinho,Renata das Graças Barbosa; Dias,Márcia Kelly Reis.
O objetivo principal deste trabalho foi estudar a parasitofauna e a relação hospedeiro- parasito em tambaqui Colossoma macropomum cultivados em tanques-rede no Rio Matapi, município de Santana, estado do Amapá, região da Amazônia oriental, Brasil. Foram examinados 60 tambaquis, dos quais 96,7% estavam parasitados por protozoários Ichthyophthirius multifiliis (Ciliophora) e Piscinoodinium pillulare (Dinoflagellida), monogenoideas Mymarotheciun boegeri e Anacanthorus spathulatus (Dactylogyridae) e sanguessugas Glossiiphonidae gen. sp. (Hirudinea). Os maiores níveis de parasitismo foram causados por protozoários I. multifiliis e P. pillulare e os menores por sanguessugas Glossiiphonidae gen. sp. Porém, os índices de infestação não tiveram efeitos na saúde dos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tanque-rede; Parasitos; Peixe; Prevalência; Sanidade.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000100013

Tempo de passagem de duas dietas no trato gastrointestinal do peixe-boi da Amazônia Trichechus inunguis (Natterer, 1883) em cativeiro
Provedor de dados: 36
Autores: Barbosa,Paula de Sousa; Da Silva,Vera Maria Ferreira; Pereira Junior,Geraldo.
Com o objetivo de testar o tempo de passagem do alimento no trato digestório de peixes-bois da Amazônia em cativeiro, foram testadas separadamente duas dietas distintas. Uma composta exclusivamente de capim do gênero Brachiaria (dieta experimental - DE 1) e outra de capim do gênero Brachiaria acrescentado de pequenas porções de ração extrusada para eqüinos (dieta experimental - DE 2). Foram selecionados do plantel do INPA dois animais adultos machos sadios, os quais foram isolados dos demais e submetidos a um período de aclimatação às dietas experimentais por 15 dias. Após este período, as dietas foram marcadas com uma fita plástica de 10 cm e fornecidas aos animais que foram monitorados em intervalos de uma hora. Todo material fecal foi coletado até a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nutrição; Monogástrico; Mamífero aquático.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000300012

Protected environments and substrates for production of genipap seedlings
Provedor de dados: 36
Autores: Sassaqui,Adriano Ribeiro; Terena,Tainara Ferreira da Silva; Costa,Edilson.
Genipap (Genipa americana L., Rubiaceae ) is a native Brazilian species and can be used in the recovery of degraded forest areas or for food supply. In order for the species to reach its potential, production of high quality seedlings is essential. The objective of this study was to evaluate genipap seedlings in protected environments and different substrates. The environments tested were: (1) a greenhouse with polyethylene film in the top, with aluminized screen (Aliminet®) of 50%-shading under this film, and lateral sides covered with 50%-shading nylon net (Sombrite®), (2) a shaded hut, all sides covered with 50%-shading nylon net (Sombrite®), and (3) a nursery shelter, with all lateral sides uncovered and the roof covered with leaves of buriti (Mauritia...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Genipa americana; Cattle manure; Cassava foliage; Analysis of combined experiments.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000200003

Incidência de leishmaniose tegumentar americana no norte de Mato Grosso entre 2001 e 2008
Provedor de dados: 36
Autores: Nobres,Evaldir de Souza; Souza,Laudenice Aparecida de; Rodrigues,Domingos de Jesus.
A incidência da Leishmaniose Tegumentar Americana registrada no Escritório Regional de Saúde de Sinop o qual abrangem 17 municípios foi analisada considerando os números de casos notificados por município, sexo, faixa etária e sazonalidade. A coleta das informações foi obtida no Sistema Nacional de Agravos de Notificação entre 2001 e 2008. Foi calculada a incidência da doença em cada município. Para avaliar a influência da sazonalidade sobre a LTA, foram usados os dados de janeiro de 2001 a dezembro de 2008. Os coeficientes de detecção para os anos de 2001 a 2008 foram maiores nos municípios de Nova Ubiratã (857,2 por 100.000 habitantes), Feliz Natal (834,5 por 100.000 habitantes) e Vera (557,0 por 100.000 habitantes). A média de incidência (334,9 por...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Epidemiologia; Saúde Pública; Prevalência; Amazônia.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000300005

Capacidade da Lemna aequinoctialis para acumular metais pesados de água contaminada
Provedor de dados: 36
Autores: Pio,Mauro Célio da Silveira; Souza,Katiuscia dos Santos de; Santana,Genilson Pereira.
A capacidade das plantas em tolerar e absorver quantidades elevadas de metais pesados é usada como uma tecnologia promissora para limpeza de resíduos perigosos em ambientes altamente contaminados. O desempenho da macrófita L. aequinoctialis em absorver metais pesados foi estudado durante sua floração em dois períodos de amostragem diferentes. As amostras de L. aequinoctialis e água foram coletadas por 800 horas em intervalos de 48 horas. A quantidade de Ni, Cu, Co, Cr, Mn, Zn e Fe presente na L. aequinoctialis e água foram determinados por espectrometria de absorção atômica com chama (FAAS). Os resultados foram avaliados pelas técnicas de estatística de componentes principais (PCA), análise de agrupamento hierárquico (HCA) e boxplot. Os resultados mostram...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fitorremediação; Macrófitas aquáticas; Lemnaceae.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000200011

Estruturas secretoras da lâmina foliar de amapá amargo (Parahancornia fasciculata, Apocynaceae): histoquímica e doseamento de flavonoides
Provedor de dados: 36
Autores: Santos,Ana Carla Feio dos; Aguiar-Dias,Ana Cristina Andrade de; Amarante,Cristine Bastos do; Coelho-Ferreira,Márlia.
Amapá amargo (Parahancornia fasciculata (Poir.) Benoist) produz um látex, que se presume ter propriedades medicinais, pois é usado no tratamento da malária, problemas pulmonares, gastrite, e como um agente de cura. Este estudo teve como objetivo analisar estrutural e histoquimicamente os locais de produção e/ou acumúlo de compostos biologicamente ativos, bem como realizar o doseamento de flavonóides presentes no limbo do amapá amargo. Para a análise estrutural e histoquímica foram utilizados protocolos padrão em anatomia vegetal. Considerando que, para o doseamento de flavonóides utilizou-se a espectrometria de absorção na região ultravioleta-visível. O sistema secretor das folhas de amapá amargo é constituído de idioblastos secretores e laticíferos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amapá amargo; Leite de amapá; Alcaloides; Flavonoides.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000400002

Eficiência do nim (Azadirachta indica A. Juss) como barreira natural ao ataque de Hypsipyla grandella (Zeller) (Lepidoptera: Pyralidae) sobre o mogno (Swietenia macrophylla King)
Provedor de dados: 36
Autores: Silva,Maria Clese Alves; Rosa,Leonilde dos Santos; Vieira,Thiago Almeida.
A eficiência da espécie Azadirachta indica como barreira natural ao ataque da Hypsipyla grandella sobre o mogno em diferentes arranjos e densidades de plantio foi, avaliada. O estudo foi realizado numa área de pastagem degradada em Vigia, PA. O delineamento experimental utilizado foi em blocos ao acaso em esquema de parcelas subdivididas no tempo, com cinco repetições, sendo as formas de cultivo do mogno as parcelas, e as épocas de avaliação (meses) as subparcelas. A barreira natural formada pelo nim não evitou o ataque de H. grandella sobre o mogno, mas retardou e minimizou o ataque em plantios mistos. Para o maior controle do ataque de H. grandella, o mogno não deve ser plantado simultaneamente com o nim, mas um ano após o plantio do nim, quando este...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Praga florestal; Controle alternativo; Planta armadilha; Sistemas silviculturais.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000100003

Cultivo de tambaqui em canais de abastecimento sob diferentes densidades de peixes
Provedor de dados: 36
Autores: Silva,Alinne Dué Ramos da; Santos,Robson Batista dos; Bruno,Arthur Murilo da Silva Souza; Soares,Emerson Carlos.
A piscicultura moderna baseia-se no melhor sistema de criação, qualidade ambiental e ganhos de produtividade. Neste experimento foi analisado o efeito da densidade de cultivo na qualidade da água, e posteriormente, no desempenho zootécnico dos tambaquis (Colossoma macropomum). Os juvenis de tambaqui com 13,6 ± 4,1g de peso médio foram mantidos em canais de abastecimento com 40 metros de extensão, dividido em quinze seções de um metro cúbico. Foram testadas três densidades (60, 90 e 120 peixe m-³) em delineamento experimental inteiramente casualizado, com cinco repetições. Os resultados dos parâmetros físico-químicos da água foram: temperatura variou de 28,0-31,7 °C, o oxigênio dissolvido de 5,9-7,4 mg L-1, o pH de 6,8-7,5, a concentração média de amônia...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Piscicultura em canais; Qualidade da água; Colossoma macropomum.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000400014

Manejo da podridão-de-Sclerotium em pimentão em um argisolo no Amazonas
Provedor de dados: 36
Autores: Netto,Rosalee Albuquerque Coelho; Ferreira,Andréia Aline Bastos; Noda,Hiroshi.
A podridão-de-Sclerotium é uma doença comum em plantas da família Solanaceae na Amazônia. Visando avaliar estratégias de manejo para esta doença em pimentão (Capsicum annuum, L. Solanaceae), foi conduzido experimento em campo em blocos casualizados com parcelas subdivididas e seis repetições, em Argissolo Vermelho-Amarelo artificialmente infestado com Sclerotium rolfsii. O tratamento principal foi a cobertura do solo (cobertura do solo com serragem ou solo nu). Os tratamentos secundários consistiram na adição ao solo de: 1) composto vegetal (3 L por cova), 2) arroz colonizado com Trichoderma harzianum (90 g por cova contendo ≈ 1,4 x 10(9) conídios g-1), 3) composto vegetal e T. harzianum nas mesmas proporções descritas anteriormente e 4) testemunha. Todas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Capsicum annuum; Sclerotium rolfsii; Trichoderma harzianum; Controle; Biológico; Cobertura morta.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000300007

Biological and morphometric aspects and rearing of Syssphinx molina (Cramer) (Lepidoptera: Saturniidae), a defoliator of parica tree
Provedor de dados: 36
Autores: Batista,Telma Fátima Vieira; Lunz,Alexandre Mehl; Rosário,Valéria do Socorro Vale do; Lemos,Leandro José Uchoa; Provenzano,Rodolfo Silva; Monteiro,Ernando da Silva.
The objective of this research was to describe the biological and morphometric aspects of the parica tree defoliator, Syssphinx molina (Cramer), and make recommendations about the insect rearing. The life cycle was 62.9 days with mean periods for the egg, larval, pre-pupal and pupal stages of 5.6, 31.1, 2.2 and 16.6 days respectively. The pupal viability was 60.5% for females and 48.6% for males. The sexual ratio was 0.5 with mean production of 182.3 ± 2.2 eggs per female and egg viability of 24.3%. The mean longevity was 7.9 ± 2 and 8.1 ± 3 days for females and males respectively. Other parameters were also observed and compared with description of other Saturniidae species.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bionomy; Life cycle; Neotropical; Schizolobium parahyba var. amazonicum.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000200009

Efeitos do tratamento com formalina e sulfato de cobre sobre os parâmetros hematológicos e parasitos monogenéticos em juvenis de Hemigrammus sp. (Osteichthyes: Characidae)
Provedor de dados: 36
Autores: Paixão,Luciana Farias; Santos,Rudã Fernandes Brandão; Ramos,Fabricio Menezes; Fujimoto,Rodrigo Yudi.
O objetivo deste trabalho foi avaliar a eficácia da formalina e sulfato de cobre no controle de monogenéticos em juvenis de Hemigrammus sp e seu efeito na contagem diferencial de leucócitos. Utilizou-se um delineamento inteiramente casualizado com 5 tratamentos e 3 repetições. Todos os tratamentos tiveram duração de três dias e corresponderam a: T1, controle; T2 e T3 banho por imersão de uma hora em formalina, em duas concentrações uma de 0,25 ml e outra 0,1 ml formalina L-1; o T4, banho de 24 horas com 0,025 ml de formalina L-1; e o T5, banho de 24 horas com sulfato de cobre (0,3 mg L-1). Após o período experimental observou-se que em T2 ocorreu 100% de mortalidade. O T3 e T5 proporcionaram eficácia de 100%, porém os peixes apresentaram intoxicação e...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: CuSO4; Formol; Monogênias; Tratamento.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000200012

Pentacyclic triterpenes and steroids from the stem bark of uchi (Sacoglottis uchi, Humiriaceae)
Provedor de dados: 36
Autores: Abreu,Viviane Gomes da Costa; Corrêa,Geone Maia; Lagos,Izandina Aparecida dos Santos; Silva,Roqueline Rodrigues; Alcântara,Antônio F. de C.
The ethanol extract from stem bark of Sacoglottis uchi Huber (popularly known as “uchi” in the Amazon Region) was submitted to chromatographic fractionation. The dichloromethane fractions provided the pentacyclic triterpene 3-oxo-friedelin (1). The dichloromethane:methanol fractions provided the pentacyclic triterpenes pseudotaraxasterol (2), lupeol (3), a-amyrin (4), betulin (5), and methyl 2ß,3ß-dihydroxy-urs-12-en-28-oate (6) and a mixture of the steroids sitosterol (7) and stigmasterol (8). Their chemical structures were determined by NMR spectroscopy and comparison with spectroscopic data from the literature. All compounds are described for the first time in this species.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Humiriaceae; Medicinal plants; Amazon Region; Triterpenes.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000400015

A influência do evento El Niño - Oscilação Sul e Atlântico Equatorial na precipitação sobre as regiões norte e nordeste da América do Sul
Provedor de dados: 36
Autores: Araújo,Rosimeire Gonzalez; Andreoli,Rita Valéria; Candido,Luiz Antonio; Kayano,Mary Toshie; Souza,Rodrigo Augusto Ferreira de.
Os impactos de eventos anômalos no oceano Pacífico associados ao El Niño-Oscilação Sul (ENOS) na precipitação da região norte e nordeste da América do Sul foram avaliados para o período de 1900 a 2007, fazendo-se uso de análise de composições. Os eventos El Niño (La Niña) no Pacífico que juntamente com um Modo Equatorial no Atlântico (MEA) frio (quente) formam um gradiente interbacias entre o Pacífico e Atlântico foram analisados considerando, separadamente, aqueles para os quais o gradiente se forma na fase inicial do ENOS daqueles em que o gradiente se forma na fase de decaimento do ENOS. Os resultados mostram que o padrão de precipitação na região norte e nordeste da América do Sul é reforçado mediante a configuração do gradiente interbacias durante a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Temperatura da Superfície do Mar; Chuva; Amazônia; Gradiente interbacias.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000400009

Arctiinae (Lepidoptera, Arctiidae) ocorrentes em uma área de pastagem na Amazônia Oriental em Altamira, Pará, Brasil
Provedor de dados: 36
Autores: Delfina,Márcia Cristina; Teston,José Augusto.
O presente estudo avaliou a fauna de Arctiinae numa área de pastagem na Amazônia Oriental em Altamira-Pará, por meio de armadilha luminosa, com duas capturas mensais noturnas a cada fase da lua nova, no período de dezembro de 2008 a novembro de 2010. Foram avaliados os seguintes parâmetros: riqueza, abundância, dominância, constância, índices de diversidade e uniformidade de Shannon (H' e E') e Brillouin (H e E), dominância de Berger-Parker (BP). As estimativas de riqueza foram feitas através dos procedimentos não paramétricos, "Bootstrap", "Chao1", "Chao2", "Jackknife1", "Jackknife2", e "Michaelis-Mentem". Foram capturados 910 exemplares pertencentes a 85 espécies de Arctiinae. Os valores dos parâmetros analisados para o período total foram: H'= 2,58, E'=...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodiversidade; Estrutura de comunidade; Mariposas; Noctuoidea.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000100010

Seasonality of nematode larvae in Iguanodectes spilurus (Characidae) an ornamental fish from northeastern Para, Brazil
Provedor de dados: 36
Autores: Fujimoto,Rodrigo Yudi; Anjos,Ellem Cristina Silva dos; Ramos,Fabrício Menezes; Martins,Maurício Laterça.
The current study presents a parasitological survey of larval nematodes from freshwater ornamental fish Iguanodectes spilurus caught in the watercourse of the Caete River, in the northeast region of the State of Para, Brazil. A total of 176 specimens, 1.36±0.75 g weight and 5.53±0.98 cm total length, were analyzed. Nematode larvae were identified as Capillaria sp., Procamallanus sp. and Anisakidae, with prevalence of 70.45% and infection intensity ranging from 1.81 to 4.70 larvae. The highest prevalence 57.38% occurred in the liver, but no seasonality was observed, indicating high infection throughout the year. Seasonality was observed in fish parasitized in the stomach, intestine and caecum, with prevalence and mean intensity of 17.61% and 2.32 parasites,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Characidae; Parasitology; Seasonality; River.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000400013

Morfometria e análise populacional de colônias de Apoica flavissima (Hymenoptera, Vespidae) coletadas na Amazônia brasileira
Provedor de dados: 36
Autores: Elisei,Thiago; Nunes,Juliana Vaz e; Silva,Jacó Rocha da; Maciel,Francinilda de Castro.
Duas colônias da vespa social Apoica flavissima foram coletadas e analisadas quanto aos parâmetros morfométricos e a população residente no ninho. Estas estavam fundadas a cerca de 700 mm do chão, nidificadas em plantas herbáceas, nas proximidades de igarapés. Ambas se encontravam no inicio do seu ciclo biológico e apresentavam um pequeno número de indivíduos, quando comparado com outros trabalhos com este gênero. Os adultos foram mensurados com médias de 21,62 mm de comprimento do corpo; 3,8 mm de largura máxima do tórax e 3,5 mm de largura da cabeça. As pupas apresentaram 20,05 mm de comprimento corpóreo; 3,75 mm de largura máxima do tórax e 3,51 mm de largura da cabeça. Ambientes naturais devem favorecer o crescimento dos indivíduos assim como manter os...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Vespa social; Bioindicador; Biologia de vespas; Amazônia.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000200015

Crescimento de mudas de mangue sob diferentes níveis de sombreamento na península de Ajuruteua, Bragança, Pará
Provedor de dados: 36
Autores: Lopes,Elaine Cristina; Araujo,Erneida Coelho de; Costa,Rejane Silva da; Daher,Rogerio Figueiredo; Fernandes,Marcus Emanuel Barroncas.
O objetivo do estudo foi avaliar a influência de diferentes níveis de sombreamento sobre o desenvolvimento de mudas das espécies arbóreas de mangue Avicennia germinans (L.) Stearn., Rhizophora mangle L. e Laguncularia racemosa (L.) Gaertn. f. O experimento foi conduzido na comunidade de Tamatateua, na península de Ajuruteua, município de Bragança. Para a produção das mudas, os propágulos das espécies arbóreas de mangue foram semeados em embalagens de polietileno (17 x 27 cm), preenchidas com substrato típico de manguezal. As mudas das três espécies foram testadas a pleno sol, 30% e 60% de sombreamento em delineamento experimental inteiramente casualizado em esquema fatorial (3 x 3) x 3 (3 espécies arbóreas e 3 níveis de sombreamento). Após as plantas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rhizophora mangle; Avicennia germinans; Laguncularia racemosa; Manguezal; Desenvolvimento de plântulas.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000300004

Geoquímica das águas do médio e baixo rio Madeira e seus principais tributários - Amazonas - Brasil
Provedor de dados: 36
Autores: Horbe,Adriana Maria Coimbra; Queiroz,Maria Mireide de Andrade; Moura,Cândido Augusto Veloso; Toro,Marco Antonio Galarza.
Este trabalho teve como objetivo estudar as águas do rio Madeira e seus principais tributários entre a cidade de Humaitá e sua foz no rio Amazonas. Foram analisados pH, condutividade, turbidez, íons maiores, elementos traço e isótopos de Sr nos períodos de seca, cheia e transição para a seca entre 2009 e 2010. As águas do Madeira, classificadas com brancas, são bicarbonatadas-cálcicas, têm pH entre 5 e 6 e são mais concentradas que as dos tributários. Estes têm águas de cor preta, mais ácidas e quimicamente heterogêneas, os da margem esquerda são quimicamente mais semelhantes as do Madeira, enquanto os da margem direita têm alta concentração em SiO2. Os cátions, Cl- e NO3- são mais concentrados na cheia o que sugere influência do solo, da vegetação e da...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sazonalidade; Íons maiores; Elementos traços e isótopos de Sr.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000400011

Impactos do avanço da soja no balanço de radiação no leste da Amazônia
Provedor de dados: 36
Autores: Souza,Paulo Jorge de Oliveira Ponte de; Rocha,Edson José Paulino da; Ribeiro,Aristides.
O desmatamento da Amazônia, em especial para o uso da pecuária, tem sido explorado por diversos pesquisadores, os quais têm apontado como conseqüência, sérios problemas ambientais. O contínuo avanço da fronteira agrícola sobre as áreas de pecuária na Amazônia, e mesmo sobre áreas nativas, merece atenção pelo fato de poucos estudos terem sido realizados com o intuito de investigar quais os prováveis impactos ambientais da presença da monocultura da soja na região. Este trabalho teve como objetivo avaliar os impactos nos componentes do balanço de radiação devido à nova mudança no uso da terra em uma área de avanço da fronteira agrícola no leste da Amazônia. Realizaram-se experimentos micrometeorológicos no município de Paragominas-PA em uma área de cultivo...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soja; Mudanças climáticas; Mudanças de uso da terra.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000200006

Flutuação populacional de Rhynchophorus palmarum (L.) (Coleoptera: Curculionidae) em palmeiras oleíferas no Amazonas
Provedor de dados: 36
Autores: Cysne,Alex Queiroz; Cruz,Bruno Araújo; Cunha,Raimundo Nonato Vieira da; Rocha,Raimundo Nonato Carvalho da.
As coleobrocas são umas das principais pragas das palmeiras devido aos seus danos diretos e indiretos resultarem na morte de diversas plantas. O levantamento populacional destes insetos é de extrema importância, visto a necessidade de se manejar adequadamente o controle realizado na área. Este estudo teve como objetivo monitorar a flutuação populacional de Rhynchophorus palmarum em plantios comerciais de Elaeis guineensis Jacq. e E. oleífera (HBK) Cortes, no estado do Amazonas. Foram distribuídas armadilhas iscadas com roletes de cana-de-açúcar e feromônio de agregação para captura de insetos no entorno do plantio, na Estação Experimental do Rio Urubu, localizada no município de Rio Preto da Eva - AM e pertencente ao Centro de Pesquisa Agroflorestal da...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dendê; Caiaué; Coleobroca; População.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000200010

Dinâmica de rizóbios em solo do cerrado de Roraima durante o período de estiagem
Provedor de dados: 36
Autores: Zilli,Jerri Édson; Pereira,Gilmara Maria Duarte; França Júnior,Izaias; Silva,Krisle da; Hungria,Mariangela; Rouws,Janaina Ribeiro Costa.
A fixação biológica de nitrogênio que ocorre em leguminosas é realizada por um grupo de bactérias conhecidas como rizóbios. A sobrevivência destas bactérias no solo é influenciada por diversos fatores como a temperatura, umidade e fertilidade do solo. O objetivo deste trabalho foi avaliar a dinâmica da população de rizóbios em solo após o cultivo de soja, durante o período de estiagem no cerrado de Roraima. Foram amostradas três áreas: i) cerrado nativo como referência; ii) área cultivada uma vez com soja inoculada com rizóbio; iii) e área cultivada duas vezes com soja inoculada com rizóbio em anos consecutivos. O solo foi coletado na profundidade de 0-10 cm em cinco períodos a partir do inicio da estiagem no mês de setembro de 2006 coincidindo com a época...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max; Vigna unguiculata; Nodulação; Número mais provável.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000200004

Comparação da eficiência relativa de dois apetrechos de coleta de peixes em praias no baixo rio Purus, Amazonas, Brasil
Provedor de dados: 36
Autores: Duarte,Cleber; Deus,Cláudia Pereira de; Py-Daniel,Lúcia Rapp.
Apesar das praias serem consideradas um dos sete mais importantes habitats aquáticos da Amazônia, poucos trabalhos foram realizados quanto ao levantamento de sua ictiofauna, principalmente quando utilizados diferentes apetrechos de coleta. Este trabalho teve como objetivo comparar a eficiência relativa de dois apetrechos, rede de cerco e malhadeira, ambos utilizados de forma ativa (arrasto), em três praias localizadas no baixo rio Purus. A rede de cerco apresentou maior número de espécies e indivíduos capturados, no entanto, a malhadeira apresentou maiores valores de biomassa total, representada principalmente por Siluriformes. A baixa similaridade da fauna de peixes capturada (38%) foi devido à exclusividade de espécies coletadas com cada apetrecho, 41...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ictiofauna; Riqueza de espécies; Malhadeira; Rede de cerco.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000300015

Desenvolvimento inicial e crescimento in vitro de Cattleya violacea (Kunth) Rolfe em diferentes concentrações de sacarose
Provedor de dados: 36
Autores: Galdiano Júnior,Renato Fernandes; Mantovani,Cibele; Cassano,Aline Olian; Lemos,Eliana Gertrudes de Macedo.
O presente estudo teve por objetivo analisar os aspectos da germinação e avaliar o efeito de concentrações de sacarose no crescimento in vitro de Cattleya violacea. Sementes provenientes de cápsulas fechadas foram semeadas em meio de cultura Murashige e Skoog (MS) e a morfologia externa da semente à plântula foi fotodocumentada em estereomicroscópio e microscópio eletrônico de varredura. Plântulas com 90 dias após a semeadura foram repicadas em meio de cultura ½ MS (com metade da concentração de macronutrientes) com diferentes concentrações de sacarose (0, 10, 20, 30 e 40 g L-1), incubadas nas mesmas condições in vitro por mais 150 dias e em seguida as plântulas foram avaliadas quanto ao número de raízes, comprimento da maior raiz, número de folhas,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Germinação assimbiótica; Orquídea nativa; Carboidrato.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000200001

Fitossociologia de uma Floresta Ombrófila Densa na Amazônia Setentrional, Roraima, Brasil
Provedor de dados: 36
Autores: Condé,Tiago Monteiro; Tonini,Helio.
O presente estudo teve como objetivo caracterizar a composição florística e fitossociológica de uma floresta nativa no município de Caracaraí, Roraima, Brasil. Foram inventariadas todas as árvores com DAP &amp;gt; 10 cm em 9 parcelas permanentes de 100 x 100 m (1 ha cada). Foram observados 4.724 indivíduos (525ind.ha-1), distribuídos em 42 famílias botânicas, 111 gêneros e 165 espécies. As famílias com maior número de indivíduos foram Fabaceae (1.883), Lecythidaceae (609) e Sapotaceae (434), perfazendo 52% do total de indivíduos amostrados. O grupo composto por espécies pioneiras apresentou maior número de indivíduos (219ind.ha-1), seguido das secundárias (193ind.ha-1) e climácicas (113ind.ha-1). No entanto, as secundárias obtiveram maior número de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversidade; Espécies amazônicas; Fabaceae; Pentaclethra macroloba.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000300002

Registro de ocorrência de Panstrongylus lignarius (Walker, 1837) (Hemiptera: Reduviidae: Triatominae) no Estado de Mato Grosso, Brasil
Provedor de dados: 36
Autores: Paula,Aécio Moraes de; Castrillon,Maria Ignez; Maciel,Giovana Belém Moreira Lima; Galvão,Cleber.
Neste trabalho, relata-se pela primeira vez a ocorrência de Panstrongylus lignarius no Estado de Mato Grosso. Entre 2001 e 2009, cinco espécimes foram capturados pelos moradores dos municípios de Paranaíta, Alta Floresta, Lucas do Rio Verde, Sorriso e Guarantã do Norte e enviados ao Laboratório de Entomologia da Secretaria de Estado de Saúde de Mato Grosso, onde foram identificados como Panstrongylus lignarius (Walker, 1837). O encontro dessa espécie no estado do Mato Grosso, Brasil, amplia a sua distribuição geográfica.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Doença de Chagas; Barbeiros; Nova ocorrência.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000100015

Teor de umidade e densidade básica da madeira de nove espécies comerciais amazônicas
Provedor de dados: 36
Autores: Silveira,Lívia Helena Carrera; Rezende,Alba Valéria; Vale,Ailton Teixeira do.
Este trabalho teve como objetivo agrupar espécies com características de teor de umidade e densidade básica da madeira semelhantes para compor cargas mistas de espécies para secagem em câmaras industriais de secagem da madeira. Foram amostradas nove espécies em floresta de terra firme na Amazônia Central com três repetições por espécie. Em todas as espécies os teores de umidade não diferiram entre base e topo do tronco, o que confere estabilidade da madeira durante o processo de secagem. Os valores de densidade básica variaram de 0,561 a 0,904 g cm-3. A partir do presente estudo foi possível separar as espécies em três grupos com base na densidade básica e teor de umidade, o primeiro com as espécies Minquartia guianensis, Lecythis poiteaui, Mezilaurus...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Grupo de espécies florestais; Secagem em estufa; Densidade da madeira.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000200007

Influência do rio Negro sobre o status nutricional de juvenis de curimatã Prochilodus nigricans (Characiformes; Prochilodontidae) no médio rio Solimões-Amazonas, Brasil
Provedor de dados: 36
Autores: Mounic-Silva,Carlos Eduardo; Leite,Rosseval Galdino.
As diferenças limnológicas entre as águas pretas do rio Negro e as águas brancas do rio Solimões-Amazonas podem ter influência sobre o status nutricional de peixes detritívoros pela diferença nas fontes dos recursos alimentares entre estes sistemas. Para verificar a influência do rio Negro sobre o status nutricional de juvenis de curimatã Prochilodus nigricans foi medida a condutividade em pontos de amostragem e estimado o fator de condição (K, a partir da relação peso/comprimento) dos juvenis em três áreas de inundação do médio rio Solimões-Amazonas: (1) com influência do rio Negro, próxima a Manaus; (2) sem influência do rio Negro, próxima a Manaus e (3) sem influência do rio Negro, em um trecho do Solimões-Amazonas 500 km a montante de Manaus. A...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Condutividade; Fator de condição; Pesca; Detritívoros; Bacia amazônica.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000300013

Estudo taxonômico de Sapotaceae Juss. do litoral Paraense
Provedor de dados: 36
Autores: Valente,Deyvid Marques; Sousa,Julio dos Santos de; Bastos,Maria de Nazaré do Carmo.
Este trabalho consiste no tratamento taxonômico de Sapotaceae Juss. nas restingas do litoral paraense. Com auxilio de estereomicroscópio foram feitas as descrições morfológicas das partes vegetativas e reprodutivas. Utilizou-se literatura especializada, coleções identificadas por especialistas para confirmar as características diferenciais dos táxons e montada uma chave de identificação para as espécies. Foram descritas cinco espécies e quatro subespécies, distribuídas em quatro gêneros: Manilkara bidentata subsp. bidentata, M. bidentata subsp. surinamensis, M. triflora, M. paraensis; Micropholisvenulosa, M. gnaphaloclados; Pouteria ramiflora, P. reticulata subsp. reticulata and Pradosia schomburgkiana subsp. schomburgkiana. O gênero Manilkara Adans.foi o...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazônia; Taxonomia; Morfologia.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000200005

Jardins de formigas na Amazônia Central: um experimento de campo utilizando cupins vivos como iscas
Provedor de dados: 36
Autores: Paula,Joana D'Arc de; Lopes,Aline.
Jardins de formigas são um tipo especial de associação entre formigas e epífitas, em que duas ou mais espécies de formigas podem compartilhar o mesmo ninho por parabiose. Essa associação que ocorre em florestas tropicais ainda foi pouco estudada. O objetivo deste trabalho foi avaliar jardins de formigas na Amazônia Central determinando se as formigas identificam e removem potenciais herbívoros que estejam visitando as árvores hospedeiras de jardins de formigas ocupados pelas espécies Camponotus femoratus e Crematogaster levior. No estudo foram observadas 42 árvores contendo jardins de formigas. Em cada árvore foi colocado um cupim, como isca, a diferentes distâncias do ninho, contabilizado o tempo para sua remoção e observado se havia recrutamento de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Camponotus femoratus; Crematogaster levior; Parabiose; Mutualismo.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000400006

Mangrove sedimentary characteristics and implications for crab Ucides cordatus (Crustacea, Decapoda, Ucididae) distribution in an estuarine area of the Amazonian region
Provedor de dados: 36
Autores: Gomes,José Diego; Abrunhosa,Fernando Araújo; Simith,Darlan de Jesus de Brito; Asp,Nils Edvin.
At the coastal zone sediments, water and organisms interact intensely. At equatorial tidal-dominated coast mangroves are abundant. These areas are well-known for their ecological importance. Considering the mangroves of Atlantic South America, the mangrove crab, Ucides cordatus has ecological and economic prominence. High densities of this crab are found on the Amazon coast. This study investigates the sediment distribution of the Bragança mangrove area (Amazon coast, Brazil) and its correlations with vegetation and mangrove crab distribution. Sediments of 47 sites, as well as crabs from sites with different sediment and vegetation, were sampled. Results show that surface sediment of the area is mainly composed by silt (59%), with 21% sand and 20% clay....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coastal plain; Sediment distribution; Tides; Vegetation; North Brazil; Mangrove crab.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000400010

Variações espaço-temporais no estoque de sementes do solo na floresta amazônica
Provedor de dados: 36
Autores: Leal Filho,Niwton; Sena,Juliana dos Santos; Santos,Gisele Rodrigues dos.
A dispersão eficiente, a longevidade e a capacidade das sementes de permanecer em estado latente a espera de condições adequadas de germinação no banco de sementes do solo da floresta garantem a presença de espécies arbóreas pioneiras nas áreas perturbadas. As variações estacionais e espaciais na densidade e na composição florística do banco de sementes em Florestas Tropicais Úmidas são assuntos ainda pouco compreendidos. Este trabalho verificou a existência de modificações espaço-temporais do banco de sementes presente em áreas de Floresta Tropical úmida localizadas próximas a Manaus, AM. Em cada uma das seis áreas estudadas, foram coletadas 40 amostras circulares de solo superficial (10 cm de diâmetro e 2 cm de profundidade) ao acaso. Essas amostras...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Banco de sementes; Amazônia; Reserva Florestal Adolpho Ducke.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000300006

Mineralogical and geochemical influences on sediment color of Amazon wetlands analyzed by visible spectrophotometry
Provedor de dados: 36
Autores: Guimarães,José Tasso Felix; Cohen,Marcelo Cancela Lisboa; França,Marlon Carlos; Silva,Any Kelly Terra da; Rodrigues,Suyanne Flavia Santos.
Based on sedimentological and geochemical data, this work relates spectrophotometric measurements with sediment composition and its application in palaeoecological studies of Amazon wetlands. The CIELAB values are directly related to mineralogical and chemical composition, mostly involving quartz, iron oxyhydroxides and sulfides (e.g. pyrite), and total organic carbon. Total organic carbon contents between 0.4-1%, 1-2%, 3-5% and 15-40% were related to L* (lightness) data of 27, 26-15, 7-10 and 7 or less, respectively. The CIELAB values of a deposit in Marabá, Pará, were proportional to variations in quartz and total organic carbon contents, but changes in zones of similar color, mainly in the +a* (red) and +b* (yellow) values of deposits in Calçoene, Amapá...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sedimentology; Amazon region; Munsell color systems; Mineralogy; Chemical composition.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000300009

Validação do balanço de radiação obtido a partir de dados MODIS/TERRA na Amazônia com medidas de superfície do LBA
Provedor de dados: 36
Autores: Oliveira,Gabriel de; Moraes,Elisabete Caria.
Este estudo tem como objetivo estimar os componentes do balanço de radiação em duas regiões do estado de Rondônia (sudoeste da Amazônia brasileira), a partir de dados do Moderate Resolution Imaging Spectroradiometer (MODIS/TERRA) por intermédio do modelo Surface Energy Balance Algorithms for Land (SEBAL), e validar os resultados com informações adquiridas por torres micrometeorológicas do projeto LBA sob as condições de pastagem (Fazenda Nossa Senhora Aparecida) e floresta (Reserva Biológica do Jaru). A implementação do modelo SEBAL foi realizada diretamente sobre os dados MODIS e incluiu etapas envolvendo o cômputo de índices de vegetação, albedo e transmitância atmosférica. A comparação das estimativas geradas a partir de dados MODIS com as observações...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Balanço de radiação na superfície; Albedo; Sensoriamento remoto; Modelo SEBAL; Radiômetros.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000300011

COMPATIBILIDAD DE Encarsia formosa (HYMENOPTERA: APHELINIDAE) CON PRODUCTOS COMERCIALES EN CONDICIONES DE LABORATORIO
Provedor de dados: 37
Autores: BARRERA,JENNIFER; CARRASCAL,JESÚS; NUMA,STEPHANIE; RODRÍGUEZ,DANIEL; CANTOR,FERNANDO.
La mosca blanca de los invernaderos, Trialeurodes vaporariorum, es una de las principales plagas de cultivos de tomate bajo invernadero y es controlada principalmente con insecticidas químicos. Sin embargo, existen estrategias alternativas de control como hongos entomopatógenos (Beauveria bassiana) y enemigos naturales como parasitoides (Encarsia formosa). En el presente estudio se evaluó la compatibilidad de productos comerciales con adultos y pupas de E. formosa bajo condiciones de laboratorio. Se evaluaron ocho tratamientos para pupas y adultos del parasitoide, incluyendo dos concentraciones del hongo entomopatógeno Beauveria bassiana (5 x 10(7) y 5 x 10(9) conidios/ml), dosis comerciales de cuatro productos comúnmente usados para el control de plagas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacillus thuringiensis; Beauveria bassiana; Control biológico; Control químico; Parasitoide.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000200004

DETECCIÓN Y CUANTIFICACIÓN DE Spongospora subterranea f. sp. subterranea EN PLANTAS SEÑUELO Y CULTIVOS DE PAPA EN COLOMBIA MEDIANTE qPCR
Provedor de dados: 37
Autores: GARCÍA BASTIDAS,NEVAR; GONZALO MORALES,JUAN; GONZÁLEZ JAIMES,PAOLA; GUTIÉRREZ,PABLO ANDRÉS; MARÍN MONTOYA,MAURICIO.
La sarna polvosa de la papa (Solanum tuberosum, S. phureja) causada por Spongospora f. sp. subterranea (Sss), es una de las enfermedades más limitantes de este cultivo. En Colombia, se han empleado diferentes métodos de detección asintomática de Sss, incluyendo bioensayos con plantas señuelo, PCR de ITS y pruebas de ELISA. Sin embargo, sus niveles de sensibilidad son bajos o requieren tiempos extensos. Una alternativa para complementar dichas herramientas es la PCR cuantitativa en tiempo real (qPCR). En este trabajo se evaluó dicha técnica utilizando los juegos de cebadores SsTQF1-SsTQR1; Spon421F-Spon494R y SscolF-SscolR (diseñados en este estudio), bajo la metodología de SYBR Green®; mientras que con Taqman® se evaluaron los cebadores SponFSponR y la...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: PCR en tiempo real; Sarna polvosa; Solanum phureja; Solanum tuberosum.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000100009

EFECTO DEL ESTRÉS HÍDRICO Y SALINO SOBRE LA GERMINACIÓN DE Atriplex nummularia (CHENOPODIACEAE)
Provedor de dados: 37
Autores: RUIZ,MÓNICA B.; PARERA,CARLOS A.
Los suelos salinos, característicos de zonas áridas, pueden afectar la germinación de las especies por presentar bajos potenciales hídricos o por toxicidad iónica. En este trabajo se determinó el efecto del estrés hídrico y salino sobre la germinación de Atriplex nummularia, una alternativa forrajera para zonas áridas. Las semillas fueron escarificadas para minimizar el efecto inhibidor de las brácteas y germinadas a 23 ºC sobre papel de germinación en soluciones con diferente potencial hídrico (-0,5, -1,0 y -1,5 MPa) de cloruro de sodio (NaCl) y polietilenglicol (PEG), utilizando agua destilada como control. El porcentaje de germinación y la velocidad de germinación fueron significativamente afectados por la concentración de la solución y el soluto...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atriplex spp.; Germinación; Estrés; Salinidad.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000100007

STUDY OF GENE FLOW FROM GM COTTON (Gossypium hirsutum) VARIETIES IN "EL ESPINAL" (TOLIMA, COLOMBIA)
Provedor de dados: 37
Autores: RACHE CARDENAL,LEIDY YANIRA; MORA-OBERLAENDER,JULIAN; CHAPARRO-GIRALDO,ALEJANDRO.
In 2009, 4088 hectares of genetically modified (GM) cotton were planted in Tolima (Colombia), however there is some uncertainty about containment measures needed to prevent the flow of pollen and seed from regulated GM fields into adjacent fields. In this study, the gene flow from GM cotton varieties to conventional or feral cotton plants via seed and pollen was evaluated. ImmunostripTM, PCR and ELISA assays were used to detect gene flow. Fifty six refuges, 27 fields with conventional cotton and four feral individuals of the enterprise "Remolinos Inc." located in El Espinal (Tolima) were analyzed in the first half of 2010. The results indicated seed mediated gene flow in 45 refuges (80.4 %) and 26 fields with conventional cotton (96 %), besides pollen...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biosafety; Cry1Ac; GM crops; Transgenic cotton.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000300008

ANÁLISIS DE LA DISTRIBUCIÓN GEOGRÁFICA DE LAS GERRIDAE (HEMIPTERA, GERROMORPHA) EN LOS ANDES DEL SUROESTE DE COLOMBIA
Provedor de dados: 37
Autores: PADILLA GIL,DORA NANCY; GARCÍA LÓPEZ,JUAN PABLO.
Se presentan la distribución geográfica y altitudinal de las Gerridae en la vertiente occidental de la Cordillera Occidental, suroccidente de los Andes de Colombia. La captura de especímenes se realizó en cuerpos de agua en ocho sitios de muestreo, durante los años 2009 y 2010. Se analizó la composición taxonómica respecto del rango geográfico y altitudinal, los biomas y la similitud entre áreas. La distribución geográfica de las Gerridae esta relacionada con el área geográfica, piedemonte y llanura del Pacífico con rango altitudinal (0-2000 m s. n. m.) y tipo de bioma. Las comunidades de Gerridae de la planicie del Pacífico a pesar de encontrarse en el mismo Zonobioma difieren en su composición taxonómica debido a diferencias en los cuerpos de agua y...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Altitud; Bioma; Chocó biogeográfico; Cordillera Occidental; Vertiente del Pacífico.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000200015

GRUPOS TRÓFICOS DE MACROINVERTEBRADOS ACUÁTICOS EN UN HUMEDAL URBANO ANDINO DE COLOMBIA
Provedor de dados: 37
Autores: RIVERA USME,JOHN JADER; PINILLA AGUDELO,GABRIEL; CAMACHO PINZÓN,DIANA LUCÍA.
En el humedal Jaboque (Bogotá, Colombia) se analizaron las condiciones físicas y químicas del agua y se estudió la comunidad de macroinvertebrados acuáticos por grupos dietarios entre abril de 2009 y enero de 2010. Las aguas del humedal presentaron un carácter ligeramente ácido con valores altos de nitratos, nitrógeno amoniacal y fósforo, por lo que este ecosistema se clasifica como eutrófico a hipereutrófico. La comunidad de macroinvertebrados acuáticos registró seis grupos alimenticios, los cuales estuvieron formados por 27 familias, 26 géneros confirmados y nueve géneros aún por confirmar, con un total de 6403 individuos recolectados en 28 muestras de macrófitas. La mayor abundancia correspondió a detritívoros (43,5 %), colectores-raspadores (31,5 %) y...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Grupostróficos alimenticios; Humedal urbano; Jaboque; Macroinvertebrados acuáticos.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000200006

IDENTIFICACIÓN MOLECULAR DE MICROORGANISMOS ASOCIADOS A LA RIZOSFERA DE PLANTAS DE VAINILLA EN COLOMBIA
Provedor de dados: 37
Autores: ÁLVAREZ,CLAUDIA L; OSORIO,NELSON W; MARÍN MONTOYA,MAURICIO.
El cultivo de vainilla es altamente promisorio en Colombia, pero se requiere mayor conocimiento de su manejo agronómico y de los microorganismos que crecen asociados a su rizosfera, de los cuales depende esta planta para su nutrición y crecimiento. En este trabajo se realizaron aislamientos de microorganismos de la rizosfera de plantas de vainilla en un cultivo piloto ubicado en el municipio de Sopetrán (Antioquia, Colombia). Los microorganismos se aislaron en medios selectivos de crecimiento para evaluar su capacidad para descomponer celulosa, proteínas, solubilizar fosfato inorgánico y orgánico (fitato) y fijar nitrógeno en forma asimbiótica. Una vez aislados y purificados, se obtuvieron un total de 109 aislamientos, de los cuales se seleccionaron 52...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: ADNr; Filogenia; PCR; PGPR; Vanilla planifolia.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000200007

REGISTRO DE CINCO ESPECIES DE AVES POCO CONOCIDAS PARA NORTE DE SANTANDER, COLOMBIA
Provedor de dados: 37
Autores: ARMESTO,LUIS ORLANDO; TORRADO VARGAS,RICARDO A; ESTEBAN LLANES,JOSÉ B.
Registramos cinco especies de aves poco conocidas para la región con base en observaciones realizadas en el área urbana de Cúcuta (departamento de Norte de Santander, Colombia). Dos de ellas son migratorias neárticas/neotropicales (Coccyzus americanus y Protonotaria citrea). Aunque cuatro especies ya habían sido recolectadas en Cúcuta, han pasado inadvertidas para esta región. Uno de los registros corresponde a la ampliación hacia el norte del área de distribución geográfica conocida para Paroaria nigrogenis.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cúcuta; Norte de Santander; Nuevos registros; Paroaria nigrogenis; Protonotaria citrea.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000100015

INTERACCIÓN ENTRE DOS ÁCAROS DEPREDADORES DE Tetranychus urticae KOCH (ACARIFORMES: TETRANYCHIDAE) EN LABORATORIO
Provedor de dados: 37
Autores: ARGÜELLES R,ANGÉLICA; PLAZAS,NATALI; BUSTOS R,ALEXANDER; CANTOR R,FERNANDO; RODRÍGUEZ,DANIEL; HILARION,ALEJANDRA.
Tetranychus urticae (Acari: Tetranychidae) es una de las principales plagas de cultivos ornamentales, entre las especies más utilizadas para su control se encuentran Neoseiulus californicus y Phytoseiulus persimilis (Parasitiformes: Phytoseiidae). En el presente trabajo se propone el manejo de la plaga mediante el empleo de liberaciones simultáneas de los dos fitoseidos. Se evaluaron varias situaciones, por un lado se estudiaron las interacciones cuando un depredador se encuentra en una densidad baja mientras que el otro depredador se presenta en alta densidad (esta situación se analizó tanto en presencia como en ausencia de la presa). Por otro lado, se evaluaron las interacciones cuando los P. persimilis y N. californicus dos están presentes en igual...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Control biológico; Fitoseidos; Intraguilda.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000100010

SEARCHING AND PARASITISM OF Diatraea saccharalis (LEPIDOPTERA: CRAMBIDAE) BY Trichospilus diatraeae (HYMENOPTERA: EULOPHIDAE)
Provedor de dados: 37
Autores: VARGAS,ELIZANGELA LEITE; PEREIRA,FABRICIO FAGUNDES; GLAESER,DANIELE FABIANA; RODRIGUES FERREIRA CALAD,VANESSA; GARCIA DE OLIVEIRA,FABIANA; PASTORI,PATRIK LUIZ.
The ability of Trichospilus diatraeae Cherian and Margabandhu, 1942 (Hymenoptera: Eulophidae) to search and parasitize Diatraea saccharalis (Fabricius, 1794) (Lepidoptera: Crambidae) pupae in sugarcane stalks was evaluated. To analyze the ability for search and parasitism were used stalks of sugarcane (20 cm) where it was introduced a pupa of D. saccharalis (T1); a pupa and a caterpillar (T2) or a pupa and fecal matter (T3). Each stalk was placed in a transparent plastic bottle with 21 females of T. diatraeae. These pupae were isolated, after 72 h, in glass tubes at 25 ± 2 °C, 70 ± 10 % relative humidity, 14:10 light/dark. The experiment was developed in an entirely casualized design with three treatments and 12 repetitions. Percentage of D. saccharalis...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biological control; Host location; Parasitoid.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000200003

BIOCHEMICAL AND PHYSIOLOGICAL CHARACTERIZATION OF OIL PALM INTERSPECIFIC HYBRIDS (Elaeis oleifera x Elaeis guineensis) GROWN IN HYDROPONICS
Provedor de dados: 37
Autores: RIVERA MÉNDEZ,YURANY DAYANNA; MORENO CHACÓN,ANDRÉS LEONARDO; ROMERO,HERNÁN MAURICIO.
The interspecific hybrid, Elaeis oleifera x Elaeis guineensis (OxG) is an alternative for improving the competitiveness and sustainability of the Latin American oil palm agro-industry, because of its partial resistance to some lethal diseases and also because of the high quality of its oil. A comparative characterization was conducted of the physiological and biochemical performance of seedlings of six OxG hybrids grown in hydroponics. Gas exchange, vegetative growth, protein, sugar and photosynthetic pigment content, and antioxidant system activity were determined. With the exception of gas exchange, the other variables showed significant differences between materials. The ´U1273´ and ´U1737´ materials showed greater vegetative growth with no expression...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Adaptation; Growth; Nutrient solution; Plant breeding; Stress.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000300005

NUEVOS REGISTROS Y AMPLIACIÓN DE LA DISTRIBUCIÓN DE HETERÓPTEROS ACUÁTICOS EN COLOMBIA (HEMIPTERA, HETEROPTERA)
Provedor de dados: 37
Autores: PADILLA GIL,DORA NANCY.
Se registran 33 especies de chinches acuáticas; 21 semiacuáticas y 12 acuáticas (Gerromorpha y Nepomorpha). Se amplia el rango geográfico para 24 especies y nueve especies son registradas por primera vez para Colombia: Cryptocricos rufus DeCarlo, 1940; Gelastocoris bolivianus De Carlo, 1954; Ranatra tuberculifrons Montandon, 1907; Neoplea borelii (Kirkaldy, 1899); Hydrometra exalla Drake y Lauck, 1959; Hebrus plaumanni Porter, 1952; Merragata hebroides White, 1877; Rheumatobates drakei (Hungerford,1954); Microvelia hinei Drake, 1920; para cada una de estas especies se considera una diagnosis e ilustración de los caracteres taxonómicos. Para todas las especies se proporcionan la distribución por departamento y municipio y un mapa ilustrativo.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Distribución; Gerromorpha; Neotrópico; Nepomorpha; Sudamérica.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000200016

CAMBIO ESTACIONAL EN LA FAUNA ACOMPAÑANTE DE LA PESQUERÍA ARTESANAL DE ARRASTRE DE CAMARÓN DEL GOLFO DE SALAMANCA, MAR CARIBE DE COLOMBIA
Provedor de dados: 37
Autores: DUARTE,LUIS ORLADO; DÍAZ-VESGA,ROY; CUELLO,FÉLIX; MANJARRÉS,LUIS.
La evaluación de la fauna acompañante en las pesquerías de arrastre se ha referido generalmente a una escala anual, ignorando eventuales variaciones estacionales. En el golfo de Salamanca, recientemente opera una flota artesanal de arrastre de camarón, cuya fauna acompañante es evaluada por primera vez en el presente estudio, considerando la estacionalidad climática y oceanográfica que domina la región (descargas continentales y surgencia). Para ello, 90 lances en la época de calmas o lluviosa (noviembre 2010) y 86 en la época de vientos (abril 2011) fueron muestreados a bordo de embarcaciones pesqueras. La proporción fauna acompañante - camarón resultó ser 2,69 (2,37 - 3,21; IC 95 %) y 6,37 (5,10 - 8,24; IC 95 %) en la época de calmas y vientos,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ecosistema; Vestuario; Manejo pesquero; Surgencia; Tropical.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000200009

COMPARACIÓN ENTRE EL POTENCIAL DE LAS REGIONES VARIABLES DEL 16s RDNA PARA LA IDENTIFICACIÓN DE Lactobacillus spp. (LACTOBACILLIACEAE)
Provedor de dados: 37
Autores: GONZÁLEZ GARCÍA,LAURA N; VANEGAS LÓPEZ,MARÍA C; RIAÑO PACHÓN,DIEGO M.
El 16s rDNA es utilizado para la identificación bacteriana dada su tasa de variación entre especies. Algunas de las regiones variables de la subunidad ribosomal son más informativas que otras por lo cual en este estudio se evalúa el potencial de identificación aportado por cada región y combinaciones entre ellas. Se extrajeron las regiones variables V1 a la V8 del 16s rDNA de diferentes cepas y especies de Lactobacillus y se analizaron mediante los paquetes de STAP (ss-RNA Taxonomy Assigning Pipeline) y RDP (Ribosomal Database Project) multiclassifier. Adicionalmente se evaluaron árboles filogenéticos de máxima verosimilitud. Nuestros resultados muestran que la mayoría de regiones variables logran dar una correcta clasificación hasta género, sin embargo no...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 16s rDNA; Estructura secundaria; Inferencia filogenética; Lactobacillus; Regiones variables.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000200012

BIOACUMULACIÓN DE MERCURIO EN LARVAS DE ANUROS EN LA ZONA AFECTADA POR LA MINERÍA DE ORO EN EL RÍO DAGUA, BUENAVENTURA, VALLE DEL CAUCA, COLOMBIA
Provedor de dados: 37
Autores: HERNANDEZ CORDOBA,OSCAR DARIO; CASTRO HERRERA,FERNANDO; PAEZ MELO,MARTHA.
Los anfibios, particularmente en sus estados larvales, tienen una gran sensibilidad a la concentración de contaminantes; por lo que se han convertido en una herramienta indicadora para evaluar cómo las diferentes actividades humanas afectan los ecosistemas acuáticos. Debido a esto se utilizaron larvas de anuros como bioindicadores en la zona del medio Dagua, en el corregimiento de Zaragoza, donde la actividad minera ha liberado contaminantes al río Dagua (metales pesados principalmente). Utilizando la técnica de espectrofotometría por absorción atómica de vapor frío se midieron las concentraciones de mercurio total en renacuajos de cinco especies, junto con una muestra de sedimentos para cada muestra animal, como un referente ambiental. La evaluación se...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biomagnificación; Contaminación; Ecotoxicología; Renacuajos.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000200011

COMPOSITION AND FUNCTION OF THE MICROBIAL COMMUNITY RELATED WITH THE NITROGEN CYCLING ON THE POTATO RHIZOSPHERE
Provedor de dados: 37
Autores: FLÓREZ-ZAPATA,NATHALIA; GARCÍA,JUAN CARLOS; DEL PORTILLO,PATRICIA; RESTREPO,SILVIA; URIBE-VELEZ,DANIEL.
In the S. tuberosum group phureja crops, mineral fertilizer and organic amendments are applied to meet the plants´ nutritional demands, however the effect of such practices on the associated rizospheric microbial communities are still unknown. Nitrogen plays an important role in agricultural production, and a great diversity of microorganisms regulates its transformation in the soil, affecting its availability for the plant. The aim of this study was to assess the structure of microbial communities related with the N cycle of S. tuberosum group phureja rizospheric soil samples, with contrasting physical-chemical properties and fertilization strategy. Few significant differences between the community composition at the phylum level were found, only...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nitrogen cycle; Nitrification; Nitrogenase; Pyrosequencing; Solanum phureja.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000300004

EVALUACIÓN DEL EFECTO DEL HIDROCARBURO FENANTRENO SOBRE EL CRECIMIENTO DE Chlorella vulgaris (CHLORELLACEAE)
Provedor de dados: 37
Autores: OTEROPATERNINA,ANGÉLICA; CRUZCASALLAS,PABLO E.; VELASCOSANTAMARÍA,YOHANA M.
Se evaluó el efecto del hidrocarburo policíclico aromático fenantreno sobre el crecimiento de la microalga Chlorella vulgaris bajo condiciones de laboratorio. Las microalgas fueron expuestas a diferentes concentraciones de fenantreno (0, 1, 10, 100, 1000 y 10000 µg/l). El tiempo de exposición fue de 72 h, determinándose diariamente la densidad algal mediante recuento en cámara de Neubauer. Se determinó la tasa promedio de crecimiento, la biomasa total y el porcentaje de inhibición de la biomasa. También se evaluó el contenido de clorofila a, al inicio y final del experimento. Los ensayos fueron realizados en recipientes de vidrio de 0,4 l, utilizando como medio de cultivo fertilizante inorgánico del complejo NPK (REMITAL® m - 17-6-18) a razón de 1 g/l. Los...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biomasa; Clorofila; Hidrocarburo; Microalgas; Toxicidad.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000100006

EL AGOTAMIENTO DEL BIOMA Y SUS CONSECUENCIAS
Provedor de dados: 37
Autores: SALVUCCI,EMILIANO.
El microbioma constituye el conjunto de microorganismos asociados a un hospedero principal. El superorganismo o holobionte humano está constituido por el hospedero y su microbioma que han coevolucionado desde los primeros días de la existencia de la especie humana. La modificación del microbioma, sumado a los cambios en los hábitos sociales y alimentarios del ser humano a lo largo de su historia biológica ha llevado a la emergencia de numerosas enfermedades. En contraste con la visión darwiniana de la naturaleza de egoísmo y competencia, nuevos enfoques holísticos has surgido. Con esta visión, la reconstitución del microbioma surge como una terapia fundamental ante la emergencia de enfermedades causadas por la continua pérdida del mismo.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agotamiento del bioma; Evolución; Holobionte; Microbioma.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000100003

CUBOMEDUSAS (CNIDARIA: CUBOZOA) DEL MAR CARIBE COLOMBIANO
Provedor de dados: 37
Autores: CEDEÑO-POSSO,CRISTINA; LECOMPTE,ORLANDO.
Las especies de cubomedusas del Caribe colombiano son aún muy poco conocidas, es por esta razón que se realizaron muestreos exploratorios en la región de Santa Marta, Colombia, durante el periodo comprendido entre febrero y octubre de 2009, para determinar que especies se encuentran en la región. Se colectaron e identificaron un total de cinco ejemplares de cubomedusas pertenecientes a la clase Cubozoa, tres del género Chiropsalmus (familia Chirodropida) y dos del género Alatina (familia Alatinidae), ambos especímenes constituyen el primer registro de cubomedusas para el Caribe colombiano.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Caribe colombiano; Cubomedusas; Identificación; Primer registro.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000100016

BIODEGRADACIÓN DE RESIDUOS DE ESTACIONES DE SERVICIO Y LAVADEROS INDUSTRIALES POR LA CEPA Rhodococcus erythropolis ohp-al-gp
Provedor de dados: 37
Autores: PUCCI,OSCAR HÉCTOR; ACUÑA,ADRIÁN; GRACIELA NATALIA,PUCCI.
La cepa Rhodococcus erythropolis ohp-al-gp fue aislada de un suelo contaminado con aceite de turbinas de la zona norte de la provincia de San Cruz, Argentina. Dado su potencial en la bioremediación, el objetivo del trabajo fue conocer las habilidades para la degradación de compuestos puros y mezclas de hidrocarburos, como también degradación en presencia y ausencia de nitrógeno de gasoil medido por cromatografía gaseosa. La cepa posee la capacidad de utilización de los siguientes hidrocarburos: gasoil, kerosene, aceite lubricante, pristano, hexano, heptano, octano, pentadecano y hexadecano. La cepa R. erythropolis ohp-al- gp presenta un excelente potencial de biorremediación de hidrocarburos conflictivos como son los aceites lubricantes, su posible empleo...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodegradación; Petróleo; Rhodococcus erythropolis.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000200002

Genética de poplaciones de Atta sexdens rubropilosa (Hymenoptera: Formicidae)
Provedor de dados: 37
Autores: BELIZÁRIO CANTAGALLI,LIRIANA; APARECIDA MANGOLIN,CLAUDETE; COLLA RUVOLO TAKASUSUKI,MARIA CLAUDIA.
La variabilidad genética de las hormigas Atta sexdens rubropilosa colectadas en cinco lugares distintos de Brasil fueron evaluados por la técnica PCR-RAPD. Un total de 15 primers produjeron 148 fragmentos, de los cuales 123 fueron polimórficos, lo que corresponden al 83,11 %. La estimación de la diversidad genética por el índice de Shannon fue 0,3836 y el desviación estándar fue de ± 0,2335. Estos valores demuestran una alta diversidad genética. El valor de G ST fue 0,2372 y ΦPT = 0,184 lo que indica que las poblaciones están moderadamente diferenciadas y que el 82 % de la variación obtenida se produce dentro de las poblaciones. Aunque la prueba de Mantel ha demostrado una correlación entre la distancia genética y geográfica se observó que Ivatuba e Itambé...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hormigas cortadoras; PCR-RAPD; Variabilidad genética.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000100013

DESCRIBIENDO ESPECIES: UN PANORAMA DE LA BIODIVERSIDAD COLOMBIANA EN EL ÁMBITO MUNDIAL
Provedor de dados: 37
Autores: ARBELÁEZ CORTÉS¹,ENRIQUE.
La descripción formal de especies ha sido el método básico, durante 250 años, para documentar la biodiversidad del planeta. El análisis de los patrones de la descripción de especies permite identificar tendencias y vacios del conocimiento taxonómico. Aquí, presento un análisis de las especies nuevas descritas para Colombia durante 20002009. Los datos los obtuve mediante una búsqueda en una base de datos bibliográfica de acuerdo a ciertas palabras y seguida por una clasificación de cada registro donde se describió una especie nueva para Colombia. Mis resultados los comparo con la información existente para el planeta. Durante la década del 2000 se describieron 1272 especies nuevas para Colombia que corresponden al 0,72 % de las especies nuevas del planeta....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Colombia; Bibliometría; Especies nuevas; Taxonomía.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000100012

NEUROTOXIC POTENTIAL OF TRICHLORFON TO MULTIPLE SUBLETHAL DOSES IN WISTAR RATS
Provedor de dados: 37
Autores: TAPIERO HERNÁNDEZ,YACSON; RONDÓN BARRAGÁN,IANG; CÉSPEDES RUBIO,ANGEL.
The organophosphates used for pest control induce sensory, motor and psychiatric disturbances after chronic exposure. The ester type is the cause of the intermediate syndrome and delayed neuropathy, in which the white and gray matter in the brain are severely affected.The aim of this study was to evaluate the effect of multiple sublethal doses of Trichlorfon on neurons, astrocytes and myelinated tissue in a rat model of brain neurotoxicity. Trichlorfon (metrifonate) was administered to adult Wistar rats at doses of 11 or 22 Î¼g/kg by oral gavage every seven days for four or eight weeks (four experimental groups) and a control group (placebo). One week after the last dose, animals were euthanized and the brains perfused, removed and cut into coronal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Astrocytes; Myelin; Neurons; Organophosphates; Toxicology.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000300007

BIOPROSPECTING AS A POSSIBLE DEVELOPMENT MECHANISM FOR COLOMBIA
Provedor de dados: 37
Autores: MELGAREJO,LUZ MARINA.
Bioprospecting has been on the agenda for discussion by the government, the academic community, businesses and other pertinent actors for many years now; it is an integral topic representing a potential approach to exploit biodiversity to the fullest. This document presents some definitions of what bioprospecting is (some restrictive, others with a broader perspective, depending on different approaches, actors, target markets and countries) in the context of a mechanism for development and cooperation concerning the construction of capacities, advantages and disadvantages. It was found that bioprospecting in Colombia has been developing from a broad perspective (systematic study of biological-genetic resources, transformation into a product which has led...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Prospecting biological diversity; Technical capacity; Capacidades técnicas; Prospección de la diversidad biológica.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000100002

EFECTO DE RESIDUOS AGROFORESTALES PARCIALMENTE BIODEGRADADOS POR Pleurotus Ostreatus (PLEUROTACEAE) SOBRE EL DESARROLLO DE PLÁNTULAS DE TOMATE
Provedor de dados: 37
Autores: LUNA FONTALVO,JORGE ALBERTO; CÓRDOBA LÓPEZ,LAURA SOFÍA; GIL PERTUZ,KARINA ISABEL; ROMERO BORJA,ISAAC MANUEL.
Se evaluó el desarrollo de plántulas de tomate (planta bioindicadora de toxicidad) en suelos con aserrín y cascarilla de arroz parcialmente biodegradados por Pleurotus Ostreatus bajo condiciones de invernadero. Se determinaron los componentes orgánicos (carbono, celulosa, lignina, extraíbles y materia orgánica) e inorgánicos (nitrógeno, fósforo y pH) antes y después de inocular el hongo en el aserrín y la cascarilla de arroz. Se realizaron mezclas de cada sustrato con un suelo pobre en nutrientes en proporciones iguales (1:1) y se les determinó el porcentaje de humedad. El experimento estuvo constituido por un diseño completamente aleatorio, con dos grupos de seis tratamientos para cada sustrato, a los 30 días se determinaron los parámetros de crecimiento...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aserrín; Cascarilla de arroz; Lycopersicum esculentum; Nutrientes.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000200013

IDENTIFICACIÓN DE ELEMENTOS cisREGULATORIOS Y PREDICCIÓN BIOINFORMÁTICA DE FACTORES DE TRANSCRIPCIÓN INVOLUCRADOS EN LA REGULACIÓN DE miARNs EN PLANTAS
Provedor de dados: 37
Autores: PÉREZ-QUINTERO,ÁLVARO; LÓPEZ,CAMILO.
Los microARNs (miARNs) son pequeños ARN no codificantes que juegan un papel importante en el control de la expresión génica a través de la degradación de ARNm complementarios a su secuencia. La expresión de los miARNs es dependiente de la ARN polimerasa II como la mayoría de genes que codifican para proteínas. La regulación de la expresión de miARNs está bajo el control coordinado y combinatorio de factores de transcripción (FT). En este trabajo, se realizó una aproximación bioinformática para identificar sitios de unión de FT, TFBS (del inglés Transcription Factors Binding Sites) en regiones promotoras de genes miRNAs en 17 especies vegetales y se analizó el papel de algunos FT en defensa contra bacterias. Se encontró que nueve de las plantas analizadas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Expresión génica; Factores de transcripción; MicroARN; Promotor.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000100008

ONTOGENIA Y FISIONOMÍA DEL PAISAJE EPIGENÉTICO: UN MODELO GENERAL PARA EXPLICAR SISTEMAS EN DESARROLLO
Provedor de dados: 37
Autores: TAMAYOORREGO,LUKAS.
El paisaje epigenético es una metáfora gráfica propuesta por Conrad H. Waddington para explicar el desarrollo de los organismos mediante la imagen de un paisaje compuesto por una superficie ondulante con cimas y valles, que representan las vías por las cuales se desplazan las células del organismo en su proceso de diferenciación. C.H. Waddington, considerado como el padre de la epigenética, es notable por sus aportes teóricos, que incluyen las nociones de asimilación genética, la canalización del desarrollo y el epigenotipo. Estas ideas surgieron a partir de estudios experimentales en biología del desarrollo, los cuales resultaron en el descubrimiento del "organizador" en embriones de aves y, posteriormente, de fenocopias inducidas por factores ambientales...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Asimilación genética; Canalización del desarrollo; Diferenciación celular; Epi-genotipo; Paisaje epigenético; Waddington.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000100001

INTERACTIVE EFFECTS OF SALINITY STRESS AND NICOTINAMIDE ON PHYSIOLOGICAL AND BIOCHEMICAL PARAMETERS OF FABA BEAN PLANT
Provedor de dados: 37
Autores: MAGDI T,ABDELHAMID; MERVAT SH,SADAK; URS,SCHMIDHALTER; ABDEL-KAREEM M.,EL-SAADY.
A possible survival strategy for plants under saline conditions is to use some compounds that could alleviate the salt stress effect. One of these compounds is nicotinamide (vitamin B3/niacin). The effect of exogenous application of nicotinamide with different concentrations (0, 200 or 400 mg l-1) on faba bean (Vicia faba L.) plant grown at different NaCl levels (0, 50 or 100 mM) was investigated in the wire house of the National Research Centre, Cairo, Egypt. Salinity stress significantly reduced the photosynthetic pigments, polysaccharides, total carbohydrates, total-N contents of shoot, plant height, leaves number, fresh and dry weights of shoot, seed yield, total carbohydrates and total crude protein of the yielded seeds compared with those of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth; Salt stress; Sodium chloride; Vicia faba; Vitamin B3.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000300009

TAXOCENOSIS DE MOLUSCOS Y CRUSTÁCEOS EN RAÍCES DE Rhizophora mangle (RHIZOPHORACEAE) EN LA BAHÍA DE CISPATÁ, CÓRDOBA, COLOMBIA
Provedor de dados: 37
Autores: QUIRÓS R,JORGE ALEXANDER; ARIAS R,JORGE ENRIQUE.
A pesar del conocimiento existente sobre la ecología de los manglares en la bahía de Cispatá, pocos estudios han sido enfocados en la asociación de invertebrados en las raíces del mangle rojo, por lo que entre diciembre 2010 y septiembre 2011, se caracterizó la taxocenosis de moluscos y crustáceos en raíces de Rhizophora mangle en dos sectores de muestreo de la bahía de Cispatá, Colombia. Para la recolección del material biológico se tomaron al azar tres raíces de mangle homogéneas en cuanto al diámetro. Los moluscos y crustáceos fueron obtenidos de la raíz raspando la superficie con un cuchillo, luego fueron separados y fijados en formalina al 10 % para su posterior identificación hasta especie mediante claves taxonómicas especializadas. De los 12289...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crustáceos; Mar Caribe; Moluscos; Rhizophora mangle; Río Sinú.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000200010

ORIGEN GEOGRÁFICO Y BOTÁNICO DE MIELES DE Apis mellifera (APIDAE) EN CUATRO DEPARTAMENTOS DE COLOMBIA
Provedor de dados: 37
Autores: PARRA,GUIOMAR NATES; MONTOYA,PAULA MARÍA; CHAMORRO,FERMÍN J; RAMÍREZ,NEDY; GIRALDO,CATALINA; OBREGÓN,DIANA.
El objetivo de este trabajo fue determinar marcadores palinológicos que permitieran caracterizar el origen geográfico y botánico de mieles provenientes de los departamentos de Boyacá, Cundinamarca, Santander y Magdalena. Se realizaron análisis melisopalinológicos de 184 muestras de miel procedentes de 131 apiarios. Se determinaron diferencias significativas entre tipos de mieles mediante un análisis discriminante y comparando la composición de especies entre las muestras. En total se encontraron 297 especies distribuidas en 69 familias, dentro de las cuales las más representativas fueron Mimosa sp., Cecropiasp., Eucalyptus sp., Piper sp. y Quercus humboldtii . Las familias más importantes fueron Fabaceae, Asteraceae,Myrtaceae, Rubiaceae, Fagaceae, y...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abejas; Apicultura; Melisopalinología; Néctar; Polen.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000300002

TRATAMENTOS PRÉ-GERMINATIVOS EM SEMENTES DE MAMONA, CULTIVAR IAC 226
Provedor de dados: 37
Autores: COSTA NOBRE,DANÚBIA APARECIDA; GOMES DAMASCENA,JOYCE; SANTOS DE SOUZA DAVID,ANDRÉIA MÁRCIA; PEREIRA DOS SANTOS,MARLÚCIA; RODRIGUES PEREIRA,ADRIANA; GONÇALVES PEREIRA,CASSIO.
O presente estudo teve como objetivo avaliar a eficiência de diferentes tratamentos pré-germinativos em sementes de mamona, cultivar IAC 226. O delineamento experimental utilizado foi o inteiramente casualizado, em esquema fatorial 4 x 4 (quatro temperaturas e quatro tempos de imersão), com quatro repetições. Os tratamentos pré-germinativos foram: imersão em água a temperatura ambiente (25 °C) e imersão em água aquecida à temperaturas de 60, 70 e 80 °C durante 2, 4, 6 e 8 minutos. Inicialmente determinou-se o teor de água das sementes. Antes e após cada tratamento, as sementes foram submetidas ao teste de germinação, a temperatura alternada de 20-30 °C, determinando-se as porcentagens de plântulas normais, anormais, sementes dormentes e mortas....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dormência; Germinação; Ricinus communis L.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000300006

DIVERSIDAD DE ABEJAS SIN AGUIJÓN (Hymenoptera:Meliponini) UTILIZADAS EN MELIPONICULTURA EN COLOMBIA
Provedor de dados: 37
Autores: NATES-PARRA,GUIOMAR; ROSSO-LONDOÑO,JUAN MANUEL.
En Colombia se conoce la existencia de cerca de 120 especies de abejas nativas sin aguijón, muchas de las cuales tienen importantes usos y representaciones para diversos grupos sociales y culturales. A pesar de que su cría y manejo (meliponicultura), es una actividad que viene creciendo y tecnificándose en Latinoamérica y otras regiones del mundo, sus características y desarrollo en Colombia han sido poco documentados. Se presentan los resultados de entrevistas y visitas a 75 personas en 16 departamentos de Colombia, que cultivan 25 especies de abejas sin aguijón, agrupadas en 12 géneros. Se encontraron al menos nueve especies más sin identificación completa, se reportan cuatro nuevos registros para el país y se amplía la distribución para 21 taxones. Se...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodiversidad; Etnoecología; Insectos benéficos; Productos naturales no maderables; Zoocría.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000300001

MOLECULAR PHYLOGENY OF THE NERITIDAE (GASTROPODA: NERITIMORPHA) BASED ON THE MITOCHONDRIAL GENES CYTOCHROME OXIDASE I (COI) AND 16S RRNA
Provedor de dados: 37
Autores: QUINTERO-GALVIS,JULIAN; RAQUEL-CASTRO,LYDA.
The family Neritidae has representatives in tropical and subtropical regions that occur in a variety of environments, and its known fossil record dates back to the late Cretaceous. However there have been few studies of molecular phylogeny in this family. We performed a phylogenetic reconstruction of the family Neritidae using the COI (722 bp) and the 16S rRNA (559 bp) regions of the mitochondrial genome. Neighbor-joining, maximum parsimony and Bayesian inference were performed. The best phylogenetic reconstruction was obtained using the COI region, and we consider it an appropriate marker for phylogenetic studies within the group. Consensus analysis (COI +16S rRNA) generally obtained the same tree topologies and confirmed that the genus Nerita is...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Colombian Caribbean; Genes mitocondrial; MDNA; Nerita; Neritina; Radiation.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000200008

CARÁBIDOS Y HORMIGAS DEL SUELO EN DOS ÁREAS CULTIVADAS CON MARACUYÁ AMARILLO (Passiflora edulis) EN EL VALLE DEL CAUCA, COLOMBIA
Provedor de dados: 37
Autores: ARENAS,ANDERSON; ARMBRECHT,INGE; CHACÓN,PATRICIA.
Se examinó la fauna de carábidos (Coleoptera: Carabidae) y de hormigas (Hymenoptera: Formicidae) que sobreviven en el suelo de un cultivo de maracuyá bajo condiciones de manejo convencional en Roldanillo, Valle del Cauca, en los meses de marzo y mayo (período lluvioso) y junio y julio (período poco lluvioso) de 2012. Se realizaron cuatro muestreos de intensidad mensual en dos lotes con edades contrastantes, registrándose las especies presentes. Se encontraron 149 individuos de Carabidae distribuidos en diez especies y 2447 hormigas distribuidas en 19 morfoespecies. La especie más abundante de hormigas fue Solenopsis geminata, mientras que Megacephala (Tetracha) sobrina fue la especie más abundante de Carabidae. Se encontró además que la abundancia y...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coleoptera; Hormigas; Insectos depredadores; Passiflora edulis.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000300003

DIVERSIDAD Y DISTRIBUCIÓN DE LAS PASSIFLORACEAE EN EL DEPARTAMENTO DEL HUILA EN COLOMBIA
Provedor de dados: 37
Autores: OCAMPO,JOHN.
Colombia es el país con mayor diversidad de Passifloraceae con 170 especies reportadas, tanto en formas silvestres como cultivadas. Sin embargo, existen zonas en el país donde esta riqueza ha sido poco explorada, como el departamento del Huila en el suroriente de la zona andina. Por esta razón, se revisaron las listas de inventarios con el objetivo de actualizar y establecer la distribución espacial de las especies en esta región con base en registros de herbario, literatura y datos de campo, para proponer estrategias de conservación. Un total de 26 especies pertenecientes al género Passiflora L. son registradas en el Huila entre los 1500 y 2500 msnm. Ocho de las especies son cultivadas y las otras 18 silvestres, se localizan principalmente en bordes de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Andes; Conservación; Frutas; Passiflora; Recursos genéticos; Vulnerabilidad.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000300010

NUTRIENT MANAGEMENT PRACTICES FOR ENHANCING SOYBEAN (Glycine max L.) PRODUCTION
Provedor de dados: 37
Autores: HELLAL,FARID A.; ABDELHAMID,MAGDI T.
Soybean (Glycine max L.), is the most important pulse crop in the world. Soybean is a very energy-rich grain legume containing 40 percent protein and 19 percent oil in the seeds. The magnitude of soybean yield losses due to nutrient deficiency also varies among the nutrients. Deficiencies of N, P, Fe, B and S nutrients may cause yield losses up to 10 %, 29-45 %, 22-90 %, 100 % and 16-30 %, respectively, in soybean depending on soil fertility, climate and plant factors. Soil salinity is one of the major limiting factors of soybean production in semiarid regions, and chloride salinity has a more depressive effect on yield than sulphate salinity. The goal of nutrient management is to maximize soybean productivity while minimizing environmental consequences....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bean; Fertiliser; Plant nutrition; Yield.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000200001

MODELACIÓN DEL ESTADO TRÓFICO DEL HUMEDAL DE JABOQUE, BOGOTÁ D. C., COLOMBIA
Provedor de dados: 37
Autores: BELTRÁN VARGAS,JULIO EDUARDO; RANGEL CHURIO,JESÚS ORLANDO.
Se construyó un modelo de simulación dinámica con la intención de explicar el comportamiento del fósforo total en el agua y su relación con el estado trófico del humedal de Jaboque, Bogotá D. C., Colombia. En el modelo se incluyen los flujos de entrada y salida del agua y los aportes de fósforo total en cada una de las tres secciones de la cubeta con características morfométricas y condiciones físicas y químicas del agua muy diferentes. La modelación dinámica se basó en ecuaciones diferenciales y para ella se utilizó el programa computacional Stella 9.1®. En los meses con mayores caudales (época de lluvias), la carga de fósforo disminuye en las tres secciones del humedal, mientras que en los meses con menores caudales (época de sequía), la misma se...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Humedales Jaboque índice de estado trófico (IST) modelación diná- mica tiempo hidráulico de retención (THR); Ndice de estado trófico (ist).
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000100011

ANÁLISIS BIOGEOGRÁFICO DE LOS PECES CHARACIFORMES DE VENEZUELA
Provedor de dados: 37
Autores: RIVERO,ANA BONILLA; LÓPEZ ROJAS,HÉCTOR.
Se realizó un análisis biogeográfico basado en los peces Characiformes de Venezuela con el objetivo de explorar la importancia relativa de los procesos que han contribuido con el establecimiento de los patrones de distribución actuales de la ictiofauna continental venezolana. La información geográfica y filogenética disponible se analizó siguiendo los métodos de Análisis de Parsimonia de Endemismos (PAE) y Análisis de Parsimonia de Brooks (BPA). El PAE señaló fundamentalmente a los Llanos Occidentales y el sur del Amazonas como áreas de endemismo. El BPA realizado con la información filogenética de siete géneros mostró un patrón generalizado con los clados (Caribe + Maracaibo) y ((((Río Negro+Orinoco) + Paria) + Valencia) + Cuyuní), donde se destaca un...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: BPA; Dispersión; PAE; Peces; Vicarianza.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000100005

PRODUCCIÓN DE BIODIESEL A PARTIR DE MICROALGAS: PARÁMETROS DEL CULTIVO QUE AFECTAN LA PRODUCCIÓN DE LÍPIDOS
Provedor de dados: 37
Autores: ARIAS PEÑARANDA,MARTHA TRINIDAD; MARTÍNEZ ROLDÁN,ALFREDO DE JESÚS; CAÑIZARES VILLANUEVA,ROSA OLIVIA.
Las microalgas poseen la capacidad para mitigar las emisiones de CO2 y producir lípidos, por lo que se consideran con potencial para la obtención de biocombustibles de tercera generación. La presente revisión proporciona información actualizada de la influencia de las condiciones de cultivo, sobre la obtención de lípidos con una productividad elevada y perfil adecuado para la producción de biodiesel, se proporciona una síntesis de resultados de investigaciones realizadas en los últimos 13 años en diversas partes del mundo. En la literatura consultada, los autores concluyen que aunque el comportamiento de las microalgas ante condiciones de estrés fisiológico es variable entre especies; la limitación de nutrientes especialmente nitrógeno y fósforo, asociado...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biocombustibles; Microalgas; Lípidos; Ácidos grasos.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000100004

Lutzomyia abonnenci Y Lutzomyia olmeca bicolor (DIPTERA: PSYCHODIDAE), NUEVOS REGISTROS PARA EL DEPARTAMENTO DE SUCRE, COLOMBIA
Provedor de dados: 37
Autores: ROMERO RICARDO,LUIS; MEZA,NATALIA LASTRE; PÉREZ DORIA,ALVEIRO; BEJARANO MARTÍNEZ,EDUAR.
Entre los departamentos de la costa Caribe de Colombia, Sucre tiene la mayor diversidad de especies del género Lutzomyia, dentro de las que se encuentran algunas asociadas al ciclo epidemiológico de la leishmaniasis cutánea y visceral. Por su importancia en salud pública, es necesario monitorear periódicamente estas comunidades de flebotomíneos, lo que motivó el desarrollo de un estudio entomológico en el municipio de Colosó, departamento de Sucre, en diciembre de 2009, 2010 y 2011. Los muestreos se realizaron con un aspirador eléctrico en sitios de reposo diurno, durante la noche se emplearon dos trampas de luz CDC y una trampa Shannon. Se recolectaron 566 flebotomíneos pertenecientes a 14 especies del género Lutzomyia, como sigue: Lu. evansi, Lu....
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Colombia; Distribución geográfica; Leishmaniasis; Lutzomyia; Psychodidae; Sucre.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000200014

DETECTION OF INFECTION WITH Toxoplasma gondii IN MANATEES (Trichechus inunguis) OF THE PERUVIAN AMAZON
Provedor de dados: 37
Autores: DELGADO,PATRICK MATHEWS; PEREA,NOFRE SANCHEZ; MATHEWS DELGADO,JONH PAUL; GARCIA,CLAUDIA BIFFI; MALHEIROS,ANTONIO FRANCISCO; GARCIA DAVILA,CARMEN ROSA.
The Amazonian manatee (Trichechus inunguis) is an aquatic mammal that inhabits freshwater environments and is endemic to the Amazon Basin. The presence of Toxoplasma gondii antibodies was investigated in 19 manatees in one rescue unit in the northern region of Peru. Antibodies to T. gondii were detected in 12 (63.2 %) of 19 animals by using the modified agglutination test (titer, 1:25), and no association between sex and age of the animals and the presence of T. gondii antibodies was observed (p &lt; 0.05). The results suggest a contamination by T. gondii oocysts in the aquatic environment where these animals live.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazonian manatee; Peruvian Amazon; Serology; Toxoplasma gondii.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000100017

ANOTACIONES SOBRE LOS REGISTROS DEL VIREO VERDEAMARILLO (Vireo flavoviridis: Vireonidae) EN LA SABANA DE BOGOTÁ, CUNDINAMARCA (COLOMBIA)
Provedor de dados: 37
Autores: ACEVEDO-CHARRY,ORLANDO A; ECHEVERRI-MALLARINO,LAURA.
El vireo verdeamarillo (Vireo flavoviridis) es una especie de ave migratoria que no cuenta con registros en literatura dentro del departamento de Cundinamarca. Adicionalmente, la distribución conocida de V. flavoridis en Colombia solo incluye localidades por debajo de 1500 msnm. Dos individuos de V. flavoviridis fueron vistos a 2600 msnm en el campus de Bogotá de la Universidad Nacional de Colombia, dentro de la Sabana de Bogotá del departamento de Cundinamarca en 2011. Posterior a consulta en colecciones y reportes de observadores de aves, encontramos 18 registros no publicados de la especie para el departamento de Cundinamarca por encima de 2500 msnm. Diez registros fueron a partir de colecciones científicas (Instituto de Ciencias Naturales de la...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Colecciones científicas; Andes Orientales; Distribución; EBird.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000300011

EFECTOS LETALES Y SUBLETALES DEL GLIFOSATO (ROUNDUP® ACTIVO) EN EMBRIONES DE ANUROS COLOMBIANOS
Provedor de dados: 37
Autores: TRIANA VELÁSQUEZ,TEÓFILA MARÍA; MONTES ROJAS,CLAUDIA MARSELA; BERNAL BAUTISTA,MANUEL HERNANDO.
El glifosato es un herbicida usado en la agricultura que puede afectar especies no blanco. El objetivo del trabajo fue determinar los efectos letales (concentración letal media - CL50) y subletales (cambios en el tamaño corporal y desarrollo) del glifosato (Roundup® Activo) sobre embriones de cuatro especies de anuros expuestos durante 96 horas en pruebas de laboratorio y microcosmos. En laboratorio, la especie más tolerante fue Engystomops pustulosus (CL50 = 3033,18 µg a.e./L) y la más sensible Rhinella marina (CL50 = 1421,46 µg a.e./L), la cual mostró una reducción significativa en el tamaño corporal y retrasos en el desarrollo de los individuos. Las demás especies tuvieron un CL50 intermedio (Rhinella humboldti = 2899,36 µga.e./L; Hypsiboas crepitans =...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anuros; CL50; Embriones; Glifosato.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000200005

REGISTROS NUEVOS O POCO CONOCIDOS DE AVES MIGRATORIAS EN LA LAGUNA DEL OTÚN, PARQUE NACIONAL NATURAL LOS NEVADOS, RISARALDA, COLOMBIA
Provedor de dados: 37
Autores: ACEVEDO-CHARRY,ORLANDO; MONCADA-ÁLVAREZ,LIGIA INES.
Colombia es un sitio importante para las aves migratorias. Sin embargo, aún falta mucho conocimiento de dónde estas se encuentran durante su paso o permanencia por el país y cuáles utilizan los páramos. Registramos nuevas especies de aves migratorias para la laguna del Otún, inmersa en un complejo de humedales declarados sitio Ramsar desde el 2008. La laguna está localizada en el Parque Nacional Natural Los Nevados a 3932 msnm, en ecosistema de páramo, en la Cordillera Central de los Andes de Colombia. Durante cinco salidas entre 2010 y 2012 se registraron cuatro nuevas especies de aves migratorias para el parque: Anas acuta, Pandion haliaetus, Riparia riparia y Dendroica petechia. Adicionalmente, se registró una ampliación del rango altitudinal para dos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ampliación de rango altitudinal; Andes; Avifauna; Cordillera Central; Migración; Páramo; Ramsar.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000100014

La microbiota intestinal humana y el metabolismo corporal: Implicaciones con la obesidad y la diabetes
Provedor de dados: 38
Autores: Devaraj,Sridevi; Hemarajata,Peera; Versalovic,James.
La obesidad, el síndrome metabólico y la diabetes tipo 2 son los principales problemas de salud pública. Recientemente, ha aumentado el interés en relación al posible papel de la microbiota intestinal como nuevos contribuyentes al aumento de la prevalencia de estos tres trastornos. Los avances recientes en las tecnologías de secuenciación de ADN microbianos han dado lugar a la aplicación generalizada de tecnologías de secuenciación del genoma entero para el análisis de ADN metagenómico en ecosistemas complejos, tales como el intestino humano. La evidencia actual sugiere que la microbiota intestinal afecta a la adquisición de nutrientes, la obtención de energía, y un sinfín de rutas metabólicas del huésped. Avances en el Proyecto de la Microbiota Humana y...
Tipo: Info:eu-repo/semantics/article
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000200019

Clinical Immunology: Principles and Practice (online and print)
Provedor de dados: 38
Tipo: Info:eu-repo/semantics/review
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000100019

Análisis bioquímico de mioglobinuria asociada con rabdomiolisis
Provedor de dados: 38
Autores: Rostagno,Agueda; Ghiso,Jorge.
La destruccion del músculo esquelético en la condición patológica conocida como rabdomiolisis resulta en la liberación al torrente sanguíneo de elevadas concentraciones de la proteína mioglobina de 17 kDa, la cual filtra libremente a través del glomérulo sobrepasando frecuentemente la capacidad de reabsorción del túbulo proximal. Por lo tanto, la identificación de mioglobina en orina es una herramienta esencial que complementa otros parámetros bioquímicos en el diagnóstico de la enfermedad. En el presente trabajo, mediante la combinación de electroforesis en geles de agarosa e inmunofijación empleando anticuerpos específicos, se provee evidencia directa de la presencia de mioglobina intacta en la orina de un paciente con insuficiencia renal aguda asociada...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Proteinograma; Proteinurias de sobrecarga; Mioglobinuria; Rabdomiolisis.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000100004

A un Maestro de la Proteómica, Prof. Dr. Marco A. Pizzolato
Provedor de dados: 38
Autores: Castagnino,Juan Miguel.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000100001

Estudio de parámetros bioquímicos en jugadores de fútbol de élite
Provedor de dados: 38
Autores: Aymard,Adrián Leonardo; Aranda,Claudio; Di Carlo,María Beatriz.
El deporte exige de quienes lo practican una adaptación, entrenamiento y buen estado físico. El objetivo del trabajo fue estudiar en suero/plasma de individuos jugadores de fútbol de élite (n=32) y no entrenados (n=16), los perfiles hematológico, endocrinológico y de química clínica, relacionar los hallazgos bioquímicos con la fisiopatología deportiva y evaluar la probable implicancia clínica de los resultados. De acuerdo con los resultados obtenidos se observó disminución significativa en: hematocrito, hierro, plaquetas y bilirrubina (expansión plasmática fisiológica); magnesio (consumo enzimático); y proteínas y glucemia (incremento del metabolismo energético y recambio proteico). No se detectaron cambios significativos en el perfil endocrinológico (TSH...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Creatinquinasa; Deportistas de élite; Fútbol de élite; Medicina deportiva; Bioquímica deportiva.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000100013

Electroforesis bidimensional en orina: una alternativa para el laboratorio clínico
Provedor de dados: 38
Autores: Facio,María Laura; Madalena,Leticia; Fraind,Susana; Alejandre,Mariel; Bresciani,Pablo; Pizzolato,Marco.
En este trabajo se presenta un método confiable para el análisis de rutina de proteínas urinarias. El método es la electroforesis bidimensional que combina la electroforesis en acetato de celulosa con la electroforesis en gel de poliacrilamida con dodecil sulfato de sodio seguida de tinción argéntica. La electroforesis bidimensional abre el espectro de proteínas, siendo algunas de ellas identificadas por immunoblotting o espectrometría de masa MALDI. Dichas proteínas son de bajo peso molecular: Orosomucoide (40 kDa), apolipoproteína AI (28 kDa), zinc-alfa 2-glicoproteína (43 kDa), fragmento del perlecan C-terminal LG3 (23 kDa), prostaglandina D2 sintasa tipo-lipocalina (29 kDa) e inter-alfa inhibidor de tripsina cadena pesada H4 (35 kDa). Estas proteínas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Electroforesis bidimensional en orina; Zinc-alfa2-glicoproteína; Péptido LG3; Prostaglandina D2 sintasa; Inter-alfa-tripsina inhibidor H4; Endotelio vascular.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000100006

Profesor Dr. Marco A. Pizzolato: Currículo
Provedor de dados: 38
Tipo: Info:eu-repo/semantics/report
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000100002

Análisis estructural y funcional de proteínas solubles que unen lípidos de parásitos helmintos
Provedor de dados: 38
Autores: Franchini,Gisela Raquel; Córsico,Betina; Pórfido,Jorge Luis; Silva,Valeria; Ibañez Shimabukuro,Marina; Burusco,Florencia Rey.
Los parásitos helmintos producen y secretan una gran variedad de proteínas que unen lípidos (LBPs, del inglés lipid binding proteins) que podrían participar en la obtención de nutrientes tales como ácidos grasos y colesterol desde el hospedador. Asimismo, se postula que las LBPs podrían intervenir en la regulación de la respuesta inmune del hospedador. Conocer más acerca de las estructuras de estas proteínas, así como de sus interacciones con ligandos y membranas, es claramente pertinente para comprender las interacciones parásito-hospedador que ellas pudieran mediar. Por otra parte, dichos estudios permitirán profundizar en el conocimiento de los mecanismos de infección helmíntica y en el papel que estas proteínas juegan en la biología de los helmintos en...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Proteínas que unen lípidos; Proteínas de unión a ácidos grasos; Parásitos; Helmintos; Nematodes; Cestodes; Ácidos grasos; Lípidos.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000200014

Lisil-oxidasa (LOX) y proteinas tipo LOX: rol de amino-oxidasas, propiedades moleculares y cataliticas
Provedor de dados: 38
Autores: Pomilio,Alicia Beatriz; Ciprian Ollivier,Jorge Oscar; Vitale,Arturo Alberto.
Las amino-oxidasas pertenecen a dos grupos de proteinas: flavoenzimas y quinoenzimas. La lisil-oxidasa (LOX) es una quinoenzima que contiene cobre y lisil-tirosil-quinona como cofactor. Los niveles de LOX aumentan en muchas enfermedades fibroticas y en algunos tumores promoviendo metastasis, mientras que la expresion de la enzima esta disminuida en enfermedades que involucran un deterioro en el metabolismo del cobre. Se discute el rol de LOX como amino-oxidasa en la catalisis de la desaminacion oxidativa de residuos de lisina en los precursores del colageno y de elastina, y la participacion de los restantes miembros de esta familia genica: LOXL1, LOXL2, LOXL3 y LOXL4, asi como sus propiedades moleculares. Se analizan su biosintesis, sus propiedades...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lisil-oxidasa; Quinoenzima; Amino-oxidasa; Lisil-oxidasa homólogos 1 a 4; Propiedades catalíticas; Cofactores e inhibidores; Mecanismo de acción.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000400003

Utilidad clínica de la citología espermática
Provedor de dados: 38
Autores: Sardi-Segovia,Lydia Melba; Mendeluk,Gabriela Ruth; Ariagno,Julia Irene; Curi,Susana Mercedes; Pugliese,Mercedes Norma; Chenlo,Patricia Haydee; Rocher,Adriana Esther; Repetto,Herberto Ernesto; Palaoro,Luis Alberto.
En el examen del semen son importantes las determinaciones de la movilidad, el número y la morfología espermática, sin embargo no resultan suficientes. La observación de las células de la progenie espermática o de otras células epiteliales puede contribuir al mejoramiento del diagnóstico clínico. En el presente trabajo se presentan tres casos de estudios de muestras de sémenes donde la observación citológica fue el criterio más importante para la definición de la patología. Finalmente se discuten imágenes celulares publicadas en el Manual de OMS para el Examen y Procesamiento de Semen Humano, 5a edición, donde se confunden células germinales inmaduras con macrófagos. El propósito del trabajo es poner en evidencia la importancia del conocimiento citológico...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Análisis de semen; Citología; Oligozoospermia; Espermatogénesis; Inflamación; Leucospermia; Próstata.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000100007

Stem Cells in Reproductive Medicine: Basic Science and Therapeutic Potential
Provedor de dados: 38
Tipo: Info:eu-repo/semantics/review
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000400013

Análisis de concordancia entre el dosaje de inmunoglobulinas y la fracción gamma del proteinograma sérico
Provedor de dados: 38
Autores: Bovone,Nora Silvia; Gastiazoro,Ana María.
En este trabajo se proponen dos criterios que evalúan el acuerdo existente entre densitometría y nefelometría, en la evaluación de los niveles de inmunoglobulinas en suero, basados en la propia población de pacientes y su posible aplicación en un algoritmo de autoverificación. Se construyó la variable Diferencia GAMgamma = Suma Igs - gamma; se efectuó el análisis según el método de Bland y Altman. Se estimó el IC95% empleando como referencia una cohorte de 497 pacientes concurrentes al laboratorio del Hospital A. Posadas en octubre y noviembre de 2011 y que tenían un dosaje de inmunoglobulinas G, A y M normal para población adulta. Estos resultados fueron contrastados con 2 poblaciones: a) 977 sujetos concurrentes en el mismo período y b) 111 pacientes con...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Densitometría; Nefelometría; Inmunoglobulinas; Nivel de acuerdo; Bland y Altman.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000300004

Valores séricos de interleuquina-4 en un grupo de adultos sanos
Provedor de dados: 38
Autores: Godoy,María Fernanda; Fernandez,Inés; Feliu,María Susana; Insani,Ester Marina; Slobodianik,Nora Haydée.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000200018

Congreso EuroMedLab 2013: las conferencias plenarias
Provedor de dados: 38
Autores: Fink,Nilda E.
Tipo: Info:eu-repo/semantics/article
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000300001

Detectores y aceleradores que curan
Provedor de dados: 38
Autores: Benedetti,Mario.
Los aceleradores y los detectores utilizados en las investigaciones en física de partículas sirven y han servido desde hace más de 100 años para la detección y cura de enfermedades. Gracias a los avances en la física experimental de partículas, se han desarrollado a lo largo de los años aceleradores más potentes y sistemas de detección más precisos y sofisticados. Estos, conjuntamente con los modernos sistemas de cómputo, han permitido aplicaciones hasta hace poco tiempo impensadas en la medicina. En este trabajo se esboza la historia de estos instrumentos, sus principios de funcionamiento y sus ventajas en las aplicaciones médicas, especialmente en el campo de la detección y tratamiento de tumores.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Detectores; Aceleradores; Tomografía de emisión de positrones; Hadronterapia; Detección y tratamiento de tumores.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000200015

Nanobiotecnología: Nanomedicina y Teranóstica
Provedor de dados: 38
Autores: Castagnino,Juan Miguel.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000400001

Respuesta inflamatoria genital en la detección de alteraciones por virus del papiloma humano
Provedor de dados: 38
Autores: Palaoro,Luis Alberto; Rocher,Adriana Esther; de Torres,Ramón.
Disfunción vaginal (DV) (vaginosis/vaginitis) es el síndrome genérico de mayor prevalencia, alcanzando el 50% de todas las mujeres en edad fértil (sintomáticas y asintomáticas). El virus del Papiloma Humano (HPV) se detecta en 30 a 40% de mujeres en edad fértil (sintomáticas y asintomáticas) y se asocia a alteraciones pre-neoplásicas y a carcinoma invasor del cuello uterino. El diagnóstico sindrómico de DV y alteraciones inducidas por HPV es ineficiente y en la actualidad la morfología (macro y microscópica) es el gold standard, pero requiere ordenamiento. El Estudio del Contenido Vaginal es la prueba de laboratorio bacteriológico de mayor solicitud luego del urocultivo. BACOVA normatiza el diagnóstico de vaginosis/vaginitis y ERIGE aumenta el valor...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Virus del papiloma humano; Cáncer de cuello uterino; Coloración de Giemsa; Koilocitos.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000300009

Determinantes de infestación durante un brote de trichinellosis en el sudoeste de la provincia de Buenos Aires
Provedor de dados: 38
Autores: Randazzoi,Viviana; La Sala,Luciano Francisco; Costamagna,Sixto Raúl.
Se estudió la asociación entre infestación, parámetros de laboratorio y signos clínicos en personas expuestas a infestación por Trichinella spiralis durante un brote de trichinellosis en el sudoeste de la provincia de Buenos Aires, Argentina. Asimismo, se investigó el grado de concordancia entre las pruebas inmunoserológicas más comúnmente utilizadas en el diagnóstico de trichinellosis humana. En las personas expuestas, la presencia de síntomas clínicos y los niveles elevados de la enzima creatina fosfoquinasa al día 7 post-exposición se asociaron significativamente con la infestación al día 30 post-exposición. Por el contrario, la eosinofilia (&gt;7%) a los siete días postexposición no se asoció al estado de infestación a los 30 días post-exposición. El...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Trichinellosis; Brote; Concordancia; Pruebas de laboratorio; Signos clínicos.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000300011

Algoritmos de laboratorio para el estudio del estado del hierro
Provedor de dados: 38
Autores: Cailliat,María Cristina; Fink,Nilda Ester.
La disponibilidad adecuada de hierro (Fe) es esencial para el desarrollo humano y la salud en general. El Fe es un componente clave de las proteínas portadoras de oxígeno, tiene un papel fundamental en el metabolismo celular y es esencial para el crecimiento y diferenciación celular. La ingesta inadecuada de Fe en la dieta, las condiciones inflamatorias crónicas o agudas y numerosas patologías están asociadas con alteraciones en la homeostasis de este metal. La regulación estricta del metabolismo del Fe es necesaria pues el Fe libre es altamente tóxico y los seres humanos sólo pueden excretar pequeñas cantidades a través del sudor, la piel, el enterocito y eliminarlo por pérdidas en procesos normales y patológicos. El objetivo de este trabajo es analizar...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hierro; Algoritmos de estudio; Deficiencia; Sobrecarga; Índice de saturación de transferrina; Ferritina; Protoporfirina eritrocitaria; Eritropoyetina; Receptor de transferrina; Hepcidina.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000300005

IX Congreso Argentino de endocrinología ginecológica y reproductiva: VIII Encuentro latinoamericano de endocrinología ginecológica y reproductiva
Provedor de dados: 38
Tipo: Info:eu-repo/semantics/report
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000400014

Guías de práctica del laboratorio clínico: Uso de marcadores tumorales en cáncer de testículo, próstata, colorrectal, mama y ovario Capítulos 1 y 2
Provedor de dados: 38
Tipo: Info:eu-repo/semantics/report
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000100018

Proteinuria: lesión estructural renaly comparación de métodos
Provedor de dados: 38
Autores: Madalena,Leticia; Pandolfo,Marcela; Facio,María Laura; Garlatti,Claudia; Alejandre¹,Mariel; Bresciani,Pablo Diego; Angerosa,Margarita.
La proteinuria (PT-ur) es un marcador de enfermedad renal, sin un método de referencia establecido. Mediante electroforesis en gel de poliacrilamida con dodecilsulfato de sodio (SDS-PAGE) con tinción argéntica pueden identificarse de manera no-invasiva perfiles proteicos urinarios (PPU) de tipo glomerular (G), tubular (Tc: completos, Ti: incompletos) y mixtos (GTc, GTi) con fines diagnósticos/pronósticos y de evolución. El objetivo del estudio fue determinar la prevalencia (P) de los PPU para cada nivel de PT-ur obtenido con cuatro métodos diferentes, en pacientes con sospecha de lesión renal. Se procesaron 105 orinas de 24 h de recolección clasificadas mediante tira reactiva (TR) y 2 pacientes con proteinuria de Bence Jones (PBJ)&gt;2 g/L. La...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Enfermedad renal; Proteinuria; Gel de poliacrilamida con dodecilsulfato de sodio; Proteína de Bence Jones; Cloruro de benzetonio.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000100011

Epidemiología Inversa: baja concentración de LDL modificadas y morbimortalidad cardiovascular en pacientes en hemodiálisis
Provedor de dados: 38
Autores: Wikinski,Regina; Cacciagiú,Leonardo; López,Graciela; González,Ana Inés; Lucero,Diego; Zago,Valeria; Schreier,Laura.
La disminución de colesterol-LDL (c-LDL) se considera meta principal del tratamiento de pacientes con riesgo cardiovascular. Sin embargo, pacientes con Enfermedad Renal Crónica (ERC) en hemodiálisis presentan c-LDL menor de 100 mg/dL, aumentos moderados de triglicéridos y baja frecuencia de colesterol-HDL por debajo de valores deseables. Esta condición se encuadra dentro del fenómeno conocido como "epidemiología inversa", en la cual la conocida asociación prevalente entre hipercolesterolemia, hipertensión arterial, obesidad y morbimortalidad por eventos cardiovasculares no se encuentra y, por el contrario se invierte la estrecha relación de estos parámetros con eventos cardiovasculares propia de los pacientes no hemodializados. Por un lado el 35% de los...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Epidemiología inversa; Hemodiálisis; Riesgo cardiovascular; Colesterol-LDL; Fosfolipasa A2 asociada a lipoproteínas; Inflamación; Remanentes lipoproteicos; Lp(a).
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000100012

Homenaje al Profesor Dr. Marco A. Pizzolato
Provedor de dados: 38
Autores: Famiglietti,Ángela; Palaoro,Luis; Negri,Gustavo A; Wikinski,Regina.
Tipo: Info:eu-repo/semantics/report
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000100003

Comentarios bibliográficos
Provedor de dados: 38
Tipo: Info:eu-repo/semantics/article
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000300013

Enterococcus spp.: Resistencia antimicrobiana en infecciones intrahospitalarias
Provedor de dados: 38
Autores: Rodríguez,Carlos Hernan; García,Susana; Barberis,Claudia; Saposnik,Elsa; Weyland,Beatriz; Nastro,Marcela; Losada,Mirta; Perazzi,Beatriz; Almuzara,Marisa; Foccoli,Mónica; Vay,Carlos; Famiglietti,Angela.
Entre los años 1996 y 2010 se estudiaron 1873 aislamientos de Enterococcus spp. pertenecientes a pacientes internados en un hospital universitario de la Ciudad Autónoma de Buenos Aires con infección intrahospitalaria. El 64,2% y el 30,4% de los aislamientos correspondieron a E. faecalis y E. faecium, respectivamente. En el periodo estudiado las infecciones por Enterococcus spp. representaron entre el 8% y el 10% del total de las infecciones nosocomiales. La prevalencia de E. faecium aumentó de un 1,5% en el año 1996 a un 4% en 2010. El primer aislamiento de enterococo resistente a vancomicina se detectó en el año 1998 y correspondió a un E. faecium y en el año 2004 se halló en E. faecalis. Actualmente más del 70% de los aislamientos de E. faecium son...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Enterococcus; Resistencia a vancomicina; E. faecium; E. faecalis; Infección intrahospitalaria.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000100017

Apolipoproteína A-I y lipoproteínas de alta densidad: Estructura y rol en la homeostasis del colesterol celular
Provedor de dados: 38
Autores: Garda,Horacio Alberto; Toledo,Juan Domingo; González,Marina Cecilia; Prieto,Eduardo Daniel; Cuellar,Luz Ángela; Cabaleiro,Laura Virginia; Chirillano,Lucio Alfonso; Almeyra,Carla Mariel.
La apolipoproteína A-I (apoAI) es el componente proteico mayoritario de las lipoproteínas de alta densidad (HDL), cuyo nivel sérico se correlaciona inversamente con el riesgo aterogénico. Las propiedades antiaterogénicas son atribuidas en gran parte al rol protagónico que tiene en el transporte reverso de colesterol (RCT), proceso que remueve el exceso de colesterol de los tejidos periféricos. La apoAI es una proteína anfitrópica formada casi en exclusividad por a-hélices anfipáticas y presenta una gran flexibilidad conformacional que es crucial para su ciclo funcional, en el que se interconvierte entre diferentes estados: libre, unida a membranas, o a una gran variedad de complejos lipoproteicos de diferente tamaño, morfología y composición. En este...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Apolipoproteína A-I; Lipoproteínas de alta densidad; Transporte reverso del colesterol; Lipoproteínas discoidales; A-hélices anfipáticas; Interacción lípido-proteica.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000200010

Documento de Consenso: Implicancia de la Proteinuria en el Diagnóstico y Seguimiento de la Enfermedad Renal Crónica
Provedor de dados: 38
Autores: Inserra,Felipe; Angerosa,Margarita.
Tipo: Info:eu-repo/semantics/article
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000300014

Biomarcadores emergentes para diferentes patologías humanas
Provedor de dados: 38
Autores: Marra,Carlos Alberto; Tacconi de Alaniz,María Josefa.
El objetivo de esta actualización fue revisar los hallazgos concernientes a la posible utilidad clínica de nuevos biomarcadores de estrés oxidativo-nitrosativo, especialmente aquellos derivados del metabolismo lipídico, como herramientas a implementar en el diagnóstico diferencial, la prognosis, el riesgo o la evaluación de estrategias terapéuticas, en enfermedades crónicas de tipo degenerativo. Se analizó la información disponible sobre el uso de marcadores emergentes en casos de infertilidad masculina por varicocele, pacientes con neurodegeneración debida a mal de Alzheimer, de Parkinson, o demencias de origen vascular, enfermos con cáncer de pulmón, próstata o mama, diabéticos tipo 2 y personas expuestas a agroquímicos en forma profesional. Como...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biomarcadores; Lípidos; Diabetes; Cáncer; Pesticidas; Estrés oxidativo; Varicocele.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000200013

Hallazgo de patrones para péptidos-vacuna con capacidad de acople universal en moléculas de HLA-II
Provedor de dados: 38
Autores: Cortés,Adrián; Coral,Jonathan; Benítez Benítez,Ricardo.
Partiendo del alineamiento múltiple de secuencias proteicas humanas obtenidas de las bases de datos del National Center of Biotechnology Information (NCBI) y su posterior análisis espacial tridimensional, se estableció la existencia de un patrón de acople universal para péptidos presentados por las moléculas de histocompatibilidad HLA-II (DR, DP y DQ), siendo una base para el diseño de vacunas proteicas. Estos patrones espaciales fueron claramente exhibidos por los residuos altamente conservados de los tres tipos de moléculas de HLA-II. La aplicación de este nuevo hallazgo permitió diseñar péptidos con mejores valores de acople péptido-HLA-II, que los generados por el péptido de acople universal conocido como CLIP (class Il-associated invariant chain...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alineamiento múltiple; Complejo Mayor de Histocompatibilidad Clase II; Péptido asociado a la cadena invariante del Complejo Mayor de Histocompatibilidad Clase II; Antígenos leucocitarios humanos tipo II; Diseño de vacunas.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000300008

Factores de riesgo cardiovascular, estado nutricional e índices HOMA-IR, QUICKI y TG/c-HDL en adolescentes púberes
Provedor de dados: 38
Autores: Acosta García,Edgar; Carias,Diamela; Páez Valery,María; Naddaf,Gloria; Domínguez,Zury.
La coexistencia o agrupamiento de factores de riesgo cardiovascular (FRCV) en la adolescencia se asocia a un mayor riesgo de sufrir enfermedades cardiovasculares en la edad adulta. El objetivo de la presente investigación fue evaluar la prevalencia de FRCV y el efecto de la coexistencia o agrupación de dichos factores y del estado nutricional, sobre los índices HOMA-IR, QUICKI y TG/c-HDL, en adolescentes púberes del Estado Carabobo, Venezuela. El estudio fue descriptivo, correlacional, de campo y transversal. Participaron 147 adolescentes entre 12 y 15 años. Se evaluó el estado nutricional y el estadio de maduración sexual. Los FRCV estudiados fueron la actividad física (AF) deficiente, el tabaquismo, la circunferencia de cintura &amp;gt;percentil 90...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Factores de riesgo cardiovascular; Adolescentes; Púber.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000300003

Flavoproteínas que actúan como amino-oxidasas: Estructura, función e importancia clínica
Provedor de dados: 38
Autores: Pomilio,Alicia Beatriz; Ciprian Ollivier,Jorge Oscar; Vitale,Arturo Alberto.
Se destaca la actividad de las flavoenzimas como amino-oxidasas, que intervienen en el metabolismo de las aminas biogénicas como biorreguladores, especialmente en el crecimiento y la diferenciación celular. La clasificación de las amino-oxidasas incluye flavoenzimas y quinoenzimas. Se analizan las amino-oxidasas que son flavoproteínas, como las monoamino-oxidasas y las poliamino-oxidasas. Se discuten las isoformas, estructuras y función de ambas, sus sustratos e inhibidores, la expresión de MAO-A y MAO-B en tejidos humanos y sus implicancias clínicas. MAO plaquetaria es un biomarcador de desórdenes mentales y neurodegenerativos. Los inhibidores selectivos de MAO-A resultaron ser eficaces antidepresivos, mientras que algunos de MAO-B se utilizan en el...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Flavoproteínas; Amino-oxidasas; Monoamino-oxidasas; Poliamino-oxidasas; Estructura; Función; Implicancia clínica.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000200007

Niveles séricos de ceruloplasmina y mieloperoxidasa en pacientes con enfermedad coronaria crónica
Provedor de dados: 38
Autores: Yapur,Viviana Mónica; Bustos,María Fernanda; Di Carlo,María Beatriz; López Mingorance,Fabiana Norma; Vázquez Blanco,Manuel; Negri,Gustavo Alberto.
Tipo: Info:eu-repo/semantics/article
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000100008

Dependencia de la dosis en los mecanismos de toxicidad y la evaluación de riesgo en toxicología
Provedor de dados: 38
Autores: Castro,Gerardo Daniel.
En la Toxicología se presentan desafíos derivados de la complejidad creciente de los escenarios ambientales que condicionan a muchas enfermedades humanas. Cuando se analiza la curva dosis-respuesta tóxica, frecuentemente se hace evidente que pueden existir varios procesos subyacentes para la acción de cualquier xenobiótico sobre un organismo vivo. Es muy probable que los pasos críticos, limitantes en cualquier mecanismo de toxicidad, puedan verse sobrepasados con exposiciones más grandes, señalando esto la emergencia de modos nuevos de injuria tisular a dosis más altas. Por lo tanto, pueden ocurrir transiciones dependientes de la dosis en el mecanismo principal de toxicidad, que tendrían un impacto significativo en la interpretación de la colección de los...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Evaluación de riesgo; Mecanismos de toxicidad; Biomon/toreo; Dosis-respuesta.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000300010

Riesgo sanitario integrado por sustancias presentes en recursos hídricos de Tres Arroyos, Argentina
Provedor de dados: 38
Autores: Othax,Natalia; Peluso,Fabio; González Castelain,José; Rodríguez,Lorena; Dubny,Sabrina.
El objetivo del trabajo fue analizar el riesgo sanitario no carcinogenético a partir de ciertas sustancias (inorgánicas, fenólicas, metales pesados y pesticidas) presentes en aguas superficiales y subterráneas de la ciudad de Tres Arroyos. El análisis se realizó utilizando el modelo básico de análisis de riesgo sanitario probabilístico de USEPA considerando tres estratos de edades infantiles (5, 10 y 15 años). Se integraron escenarios de tipo residencial con recreativo, sobre la base de la exposición por la ingesta y por el contacto dérmico con el agua. En los tres estratos de edad, los resultados indican que los valores del riesgo integrado (riesgo residencial + riesgo recreativo) fueron significativos y decrecientes con relación a la edad, siendo el...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tres Arroyos; Aguas superficiales; Aguas subterráneas; Riesgo sanitario integrado; Riesgo residencial; Riesgo recreativo.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000400006

Homenaje al Dr. Rodolfo Roberto Brenner
Provedor de dados: 38
Autores: Castagnino,Juan Miguel.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000200001

Utilidad de la procalcitonina y proteina C reactiva en la unidad de terapia intensiva pediatrica
Provedor de dados: 38
Autores: Scandizzo,Hilda Emilia; Lopez,Ricardo Angel; Busso,Leonardo; Bernstein,Judith Celina; Blanco,Miriam Edith; Zubieta,Martin.
El objetivo de este trabajo fue evaluar la utilidad de la Procalcitonina (PCT) y Proteina C Reactiva (PCR) en pacientes pediatricos con sospecha de infeccion bacteriana o sepsis al ingreso a la Unidad de Terapia Intensiva Pediatrica (UTIP) y posterior seguimiento como pronostico de internacion prolongada o muerte en un hospital de tercer nivel. Se realizo un estudio prospectivo observacional, unicentrico. Punto final primario: se considero un punto final combinado de muerte hospitalaria o internacion prolongada en la UTIP (mayor de 12 dias). Se dosaron Procalcitonina (VIDASR BRAHMS PCT) y PCR (Ensayo turbidimetrico BT 3000) al ingreso y al tercer dia de internacion y se calculo el aclaramiento de ambos marcadores. De 41 pacientes, 24 (58%) fallecieron o...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Procalcitonina; Proteína C reactiva; Sepsis.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000400005

Gammapatía monoclonal de significado incierto: factores de pronóstico, evolución y riesgo
Provedor de dados: 38
Autores: Alejandre,Mariel Emilce; Sackmann,Federico; Pavlovsky,Santiago; Remaggi,Guillermina; Pavlovsky,Miguel Arturo; Pandolfo,Marcela; Madalena,Leticia; Fraind,Susana; Facio,María Laura; Pavlovsky,Astrid; Pizzolato,Marco.
La Gammapatía Monoclonal de Significado Incierto (GMSI) tiene una prevalencia que varía entre 1 y 3%, su frecuencia tiende a aumentar con la edad y aunque presentan evolución indolente y una sobrevida prolongada, un porcentaje de ellas desarrollará una enfermedad maligna. Con el objetivo de evaluar el valor pronóstico de diversos parámetros proteicos y hematológicos al momento del diagnóstico, se estudiaron mediante estudios proteicos completos en sangre y en orina, 407 pacientes con diagnóstico de GMSI que ingresaron a la institución en el período comprendido entre 1982 y 2008. La concentración del componente monoclonal (CM) (&gt;1,5 g/dL) y el tipo inmunológico (No IgG), la disminución de las inmunoglobulinas no comprometidas (INC), el porcentaje de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gammapatía monoclonal de significado incierto; Factores pronósticos; Riesgo de evolución.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000100010

Acumulación de acetaldehído y estrés oxidativo en testículo luego de la intoxicación alcohólica en ratas
Provedor de dados: 38
Autores: Quintans,Leandro Néstor; Maciel,María Eugenia; Castro,José Alberto; Castro,Gerardo Daniel.
En el hombre el consumo excesivo de alcohol está asociado con una disminución en la producción de testosterona y la atrofia testicular. Pudieron observarse consecuencias similares en estudios realizados in vitro en testículos aislados y la producción de testosterona, donde el acetaldehído mostró ser más potente que el alcohol para la supresión de la liberación de la hormona. Estudios previos de este laboratorio reportaron que la fracción microsomal del testículo de rata era capaz de metabolizar el etanol a metabolitos reactivos como el acetaldehído y los radicales libres 1-hidroxietilo. En este trabajo se presenta evidencia de que luego de una dosis única de etanol, el acetaldehído se acumula en el testículo durante las primeras seis horas posteriores al...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Consumo de alcohol; Toxicidad reproductiva; Testículo; Estrés oxidativo; Acetaldehído.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000400009

Congreso Nacional Bioquímico CUBRA XII: 70º Congreso Argentino de Bioquímica
Provedor de dados: 38
Tipo: Info:eu-repo/semantics/report
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000200022

Meta-análisis: diagnóstico de tuberculosis resistente por técnicas no comerciales de amplificación
Provedor de dados: 38
Autores: Imperiale,Belén Rocío.
La emergencia de tuberculosis (TB) multidrogo y extensivamente-resistente reactivó la necesidad de contar con métodos rápidos para detectar resistencia a isoniacida (INH) y rifampicina (RIF). Por tal motivo, los objetivos de este trabajo fueron evaluar, mediante meta-análisis, la exactitud global y la posible utilidad de métodos caseros basados en PCR para la detección rápida de resistencia a INH y RIF en aislamientos clínicos de Mycobacterium tuberculosis. La búsqueda bibliográfica incluyó Medline/PubMed, BioMedLib. Para estimar la variabilidad entre los resultados de los estudios y el grado de exactitud diagnóstica de los métodos utilizados se realizaron gráficos "forest plot" y curvas SROC (summary receiver operating characteristic) mediante el software...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mycobacterium tuberculosis; Tuberculosis; Sensibilidad a drogas; Rifampicina; Isoniacida; Métodos moleculares; Reacción en cadena de la polimerasa; Métodos rápidos.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000200017

El Dr. Rodolfo R. Brennner y una de sus principales obras: El Instituto de Investigaciones Bioquímicas de La Plata (INIBIOLP)
Provedor de dados: 38
Autores: Garda,Horacio Alberto.
Tipo: Info:eu-repo/semantics/report
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000200003

Rol de la isoforma 2 de la glicerol-3-fosfatoaciltransferasa en el metabolismo lipídico testicular
Provedor de dados: 38
Autores: Cattáneo,Elizabeth Renée; Pellon-Maison,Magalí; Gonzalez-Baró,María del Rosario.
El primer paso en la síntesis de novo de glicerolípidos es la acilación del glicerol-3-fosfato, la cual es catalizada por la enzima glicero-3-fosfato aciltransferasa (GPAT). En mamíferos han sido descriptas hasta el momento cuatro isoformas de GPAT, las cuales pueden diferenciarse por su localización tisular y subcelular, y por su sensibilidad a reactivos que reaccionan con los grupos sulfhidrilos. El objetivo de este trabajo fue estudiar la localización y función de GPAT2, una isoforma mitocondrial que se expresa principalmente en testículo utilizando como modelo células CHO-K1 que sobreexpresan GPAT2. Se observó que esta isoforma utiliza como sustrato específicamente al ácido araquidónico, estimula la síntesis de triacilgliceroles (TAG) con alto...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glicerol-3-fosfatoaciltransferasa 2; Ácido araquidónico; Triacilgliceroles; Espermatogénesis.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000200009

Parece que fue ayer...: Albores de las investigaciones de lípidos en la Argentina
Provedor de dados: 38
Autores: Brenner,Rodolfo Roberto.
Tipo: Info:eu-repo/semantics/report
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000200004

Análisis de anticuerpos antifosfolipídicos y cistatina C en pacientes con esclerosis múltiple
Provedor de dados: 38
Autores: Arrobas Velilla,Teresa; García Sánchez,María Isabel; González Rodríguez,Concepción; Bermudo Guitarte,Carmen; Izquierdo Ayuso,Guillermo; Fabiani Romeroa,Fernando.
La cistatina C es considerada el inhibidor fisiológico más importante de las proteasas de cisteína endógenas. Se cree que el papel de la cistatina C es el de modular la actividad de las proteasas secretadas o liberadas de células dañadas o en proceso de necrosis, siendo por tanto las cistatinas fundamentales para los procesos de regulación y prevención del potencial daño proteolítico local. Los anticuerpos antifosfolípidos se usan para esclarecer el diagnóstico de esclerosis múltiple (EM) ya que existen patologías que pueden cursar con sintomatología o hallazgos paraclínicos semejantes. El objetivo de este trabajo fue analizar la concentración de cistatina C y la presencia o ausencia de anticuerpos antifosfolipídicos en pacientes diagnosticados de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Esclerosis múltiple; Anticuerpos antifosfolipídicos; Cistatina C; Desmielinización; Bandas oligoclonales; Proteinasas de cisteína; Líquido cefalorraquídeo.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000300006

Transferencia génica asistida por campos magnéticos: Estudios en células gliales
Provedor de dados: 38
Autores: Pardo,Joaquín; Sosa,Yolanda Elena; Reggiani,Paula Cecilia; Arciniegas,Magda Lorena; Sánchez,Francisco Homero; Goya,Rodolfo Gustavo.
Las nanopartículas magnéticas (MNP) complejadas con vectores génicos pueden, en presencia de un campo magnético externo, amplificar sustancialmente la eficiencia de la transferencia génica. Esta técnica, denominada magnetofección, es de gran interés en el campo de la terapia génica. En este estudio se caracterizó la mejora de transferencia génica en células gliales B92 utilizando complejos constituidos por diferentes proporciones de MNP asociadas a dos vectores adenovirales, a saber: los complejos entre las MNP denominadas PEI-Mag2 asociadas al adenovector RAd-GFP que expresa la proteína fluorescente verde GFP o al adenovector RAd-DsRed que expresa la proteína fluorescente roja DsRed2. Se demostró que para ambos vectores, a medida que la relación...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nanotecnología; Nanopartículas magnéticas; Adenovectores; Terapia génica; Magnetofección; Sistema nervioso; Glia; Proteína fluorescente verde; Proteína fluorescente roja.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000200016

Utilidad clínica de los anticuerpos anticitoplasma de neutrófilos en lupus eritematoso sistémico juvenil
Provedor de dados: 38
Autores: Cardinalli,Antonio; Ginaca,Alejandra; Espada,Graciela; Pizzimenti,María Cristina; Rivas,María Emilia; Leggire,Lina; Griemberg,Gloria.
En lupus eritematoso sistémico juvenil (LES) no existen suficientes antecedentes como para obtener resultados concluyentes entre la prevalencia de anticuerpos anticitoplasma de neutrófilos (ANCA) y la importancia clínica en esta enfermedad. Sumada a la falta de estudios se encuentra la dificultad de detectar ANCA en presencia de anticuerpos anti nucleares (ANA). Este estudio tiene como objetivos determinar: a) la frecuencia de ANCA en LES juvenil, evitando por absorción las imágenes interferentes de ANA, b) las especificidades antigénicas de los ANCA y c) la asociación de ANCA con el grado de actividad de la enfermedad y con las diferentes manifestaciones clínicas. Ingresaron al estudio un grupo de 51 pacientes (media de edad: 14,6 años) con LES juvenil...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anticuerpos anticito plasma de neutrófilos; Lupus eritematoso sistémico juvenil; Absorbente anticuerpos antinucleares.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000100016

Actividad antiproliferativa y anticolesterogénica de estatinas y monoterpenos
Provedor de dados: 38
Autores: Polo,Mónica; Crespo,Rosana; Galle,Marianela; Rodenak Kladniev,Boris; Montero Villegas,Sandra; García de Bravo,Margarita.
Las estatinas son inhibidores competitivos de la 3-hidroxi-3-metilglutaril-coenzima A (HMG-CoA) reductasa ampliamente usados en los tratamientos contra las hipercolesterolemias. Los monoterpenos son componentes no nutritivos de la dieta presentes en aceites esenciales de varias plantas que han demostrado tener múltiples efectos en la vía del mevalonato. Se estudia el efecto y mecanismo de acción de monoterpenos presentes en aceites esenciales, así como la combinación de éstos entre sí y con simvastatina sobre la síntesis de colesterol, el metabolismo lipídico y la proliferación celular in vitro en células hepáticas Hep G2 y no hepáticas A549, e in vivo en ratones atímicos huéspedes y no huéspedes de tumores derivado de células A549 implantados en ellos. Se...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vía del mevalonato; Estatinas; Monoterpenos; Proliferación celular; Colesterogénesis; Células hep G2; Células A549; Ratones atímicos.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000200011

Mecanismo de acción de la toxina alfa hemolisina de Escherichia coli
Provedor de dados: 38
Autores: Bakás,Laura; Maté,Sabina; Vazquez,Romina; Herlax,Vanesa.
Escherichia coli es una de las bacterias anaerobias facultativas más predominantes en el intestino, siendo, en la mayoría de los casos, inocua para el huésped. Existen cepas que traslocan al torrente sanguíneo causando enfermedades extraintestinales como infecciones urinarias, septicemia y meningitis. Dentro de éstas se encuentran las cepas uropatogénicas (Uropathogenic Escherichia coli: UPEC), que secretan varios factores de virulencia. Estos últimos incluyen: toxinas, sistemas de adquisición de hierro, adhesinas y antígenos capsulares. Las principales toxinas secretadas son: alfa-hemolisina (HlyA) y el factor necrotizante citotóxico 1 (CNF-1). En esta revisión se presenta una descripción exhaustiva de HlyA, incluyendo su síntesis, maduración y...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Toxinas; Oligomerización; Microdominios de membrana; Inmunotoxinas; Regiones intrínsecamente desordenadas.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000200012

Infección chagásica en niños de cuatro distritos de riesgo de la provincia de Santa Fe
Provedor de dados: 38
Autores: Mendicino,Diego; Stafuza,Mariana; del Barco,Mónica; Colussi,Carlina; Bizai,María Laura; Fabbro,Diana; Nepote,Marcelo; Streiger,Mirtha.
El objetivo del presente estudio fue investigar infección chagásica en niños de 1 a 15 años que residen en zona de riesgo vectorial o con antecedentes migratorios en la provincia de Santa Fe, estimar la/s vía/s más probable/s de infección y comparar la prevalencia con trabajos anteriores. Se realizó un estudio seroepidemiológico en escuelas de los Distritos Garabato, Fortín Olmos y Gato Colorado y la escuela de la comunidad Com Caia del Departamento La Capital. A los seropositivos se les realizó una encuesta para determinar las probables vías de infección. Se comparó la prevalencia actual con la del último control de cada distrito. No se hallaron seropositivos en Com Caia (prevalencia 0%, 0/130). La prevalencia en Garabato fue 1,0% (6/604), Fortín Olmos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Enfermedad de Chagas; Epidemiología; Prevención y control.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000300002

Relación entre síndrome metabólico e insulino resistencia en adultos con riesgo para diabetes tipo 2
Provedor de dados: 38
Autores: Coniglio,Raúl Ignacio; Ferraris,Roberto; Prieto,Andrea; Vásquez,Luis Alberto; Garro,Sandra; Trípodi,Marco Antonio; Salgueiro,Ana María; Otero,Juan Carlos; Malaspina,María Marcela; Montiel,Hugo.
La diabetes mellitus tipo 2 (DBT2) es muy frecuente en la población pero no siempre está diagnosticada. Las alteraciones en el metabolismo de la glucosa (Glu) y el síndrome metabólico (SM) se presentan años antes de DMT2. Se realizó un estudio poblacional transversal, aleatorio y estratificado según nivel socioeconómico en 223 sujetos de 45 y más años con riesgo para DMT2. SM se determinó según AHA/NHLBI. El objetivo de este trabajo consistió en: a) Determinar la frecuencia de sujetos con Glu alterada en ayunas y SM; b) Determinar la relación entre diferentes índices de insulino-resistencia (IR), QUICKI, HOMA, Insulina (Ins) e Ins/Glu con SM y sus componentes. Los resultados fueron: la Glu elevada en ayunas (100-125 mg/dL) fue 19,3% (varones 22,1% y...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diabetes mellitus tipo 2; Glucosa alterada en ayunas; Síndrome metabólico; Índices de insulino-resistencia; Insulina; Insulina/glucosa; Educación formal; Riesgo para diabetes mellitus.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000100005

Análisis estructural y funcional de proteínas solubles que unen lípidos de intestino e hígado
Provedor de dados: 38
Autores: Falomir-Lockhart,Lisandro Jorge; Córsico,Betina; Franchini,Gisela Raquel; De Gerónimo,Eduardo; Rodriguez-Sawicki,Luciana; Botasso,Natalia.
Luego de la ingesta, el epitelio del intestino delgado está encargado de asimilar grandes cantidades de nutrientes, como aminoácidos, glúcidos y ácidos grasos. Las proteínas solubles que unen lípidos cumplirían un rol determinante en este proceso, sobre todo protegiendo la integridad del tejido contra el efecto simil-detergente de los ácidos grasos provenientes de la dieta. En enterocitos se expresan dos proteínas que unen ácidos grasos de cadena larga, IFABP y LFABP, para las cuales no se conocen bien aún sus funciones específicas, o el porqué de la necesidad de dos proteínas aparentemente equivalentes. Este laboratorio se ha enfocado en el estudio comparativo de estas dos proteínas empleando distintas variantes estructurales y métodos bioquímicos,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Proteínas solubles que unen lípidos; Metabolismo de ácidos grasos; Epitelio intestinal; Fluorescencia.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000200008

Curriculum Vitae: Dr. Rodolfo Roberto Brenner
Provedor de dados: 38
Tipo: Info:eu-repo/semantics/report
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000200002

Especies reactivas de oxígeno y su efecto sobre la actividad de las células óseas
Provedor de dados: 38
Autores: Marotte,Clarisa; Zeni,Susana Noemí.
Las mitocondrias generan especies reactivas de oxígeno (ERO) que cumplen con una multiplicidad de procesos celulares; cuando se producen en exceso son responsables del estrés oxidativo y de múltiples procesos patológicos, incluyendo osteoporosis. Los factores de transcripción FoxO 1, 3 y 4 actúan como moléculas sensoras de ERO convirtiendo la señal de estrés oxidativo en la inducción de mecanismos de protección o señales apoptóticas. La insulina y los factores de crecimiento insulínicos (IGFs) regulan negativamente a FoxOs en mamíferos. Las ERO están involucradas en el remodelamiento óseo a través del efecto que ejercen sobre osteoblastos y osteoclastos. Los FoxOs controlan la acción de ERO sobre la osteoblastogénesis y la osteoclastogénesis. Con la edad,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Especies reactivas de oxígeno; Osteoblastos; Osteoclastos; Remodelamiento óseo; Factores de transcripción sensibles a reacciones redox; Estrés oxidativo; Osteoporosis.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000400004

A mi profesor, colega y amigo, Dr. Cattáneo
Provedor de dados: 38
Autores: Brenner,Rodolfo Roberto.
Tipo: Info:eu-repo/semantics/report
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000200005

Genotoxicidad en leucocitos por la quimioprofilaxis de sangre con Violeta de Genciana y su prevención con antioxidantes
Provedor de dados: 38
Autores: Díaz Gómez,María Isabel; Castro,José Alberto.
El Violeta de Genciana (GV) se usa como aditivo en la sangre para eliminar el Trypanosoma cruzi en la quimioprofilaxis de la infección por enfermedad de Chagas vía transfusión sanguínea, cuando no es posible un control previo de laboratorio o bajo situaciones de emergencia. En estos estudios se encontraron efectos genotóxicos del GV con el ensayo Cometa, cuando se lo agregó a la sangre bajo las condiciones empleadas para esterilizarla para transfusión. El efecto genotóxico fue aún más intenso si la sangre se mantenía con GV por 48 horas. Los resultados obtenidos con el ensayo Cometa sugieren la formación de bases hidroxiladas de ADN como resultado de un ataque de especies reactivas de oxígeno y apoyan la genotoxicidad del GV y su potencial carcinogénico ya...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Violeta de Genciana; Enfermedad de Chagas; Transfusión sanguínea; Ensayo Cometa; Efectos genotóxicos; Antioxidantes.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000400010

1° Congreso Argentino de cromatografía y técnicas afines: 24, 25 y 26 de septiembre de 2013
Provedor de dados: 38
Tipo: Info:eu-repo/semantics/report
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000200023

Uso de marcadores tumorales en cáncer de testículo, próstata, colorrectal, mama y ovario: Capítulo 4
Provedor de dados: 38
Autores: Sturgeon,Catharine M; Diamandis,Eleftherios P.
Tipo: Info:eu-repo/semantics/article
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000300012

Estudio del semen humano: implementación de un método objetivo
Provedor de dados: 38
Autores: Chenlo,Patricia Haydee; Ariagno,Julia Irene; Pugliese,Mercedes Norma; Repetto,Herberto Ernesto; Sardi Segovia,Lydia Melba; Mendeluk,Gabriela Ruth; Curi,Susana Mercedes.
El objetivo del presente trabajo fue estandarizar y validar un sistema computarizado de análisis de semen CASA, SCA (Sperm Class Analyzer) para los parámetros de concentración y movilidad espermática de acuerdo a normativas internacionales. Se estandarizó el tipo de velocidad para la clasificación en grados y la profundidad adecuada de la cámara. Para la validación se determinó precisión, límite de detección, intervalo de medición y estudio de comparación de métodos. Se halló alta correlación lineal en la clasificación del movimiento empleando Velocidad Curvilínea o Velocidad Promedio (r=0,99; p&lt; 0,001), estableciendo el uso de la primera para obtener resultados comparables con otros sistemas objetivos. También, se normatizó el empleo de cámaras de 10...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Estudio de semen; Método objetivo; Sistemas computarizados de análisis de semen; Validación.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000100009

Premio Wiener Lab. Colabiocli 2013: XXI Congreso Latinoamericano de Bioquímica Clínica
Provedor de dados: 38
Tipo: Info:eu-repo/semantics/report
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000200024

Neurodegeneración causada por mutaciones en el gen de la cadena liviana de ferritina
Provedor de dados: 38
Autores: Vidal,Ruben.
La duplicación de nucleótidos en el cuarto exón del gen de la cadena liviana de ferritina (FTL) causa la enfermedad neurodegenerativa autosómica dominante neuroferritinopatía o ferritinopatía hereditaria (hereditary ferritinopathy, HF). La presentación clínica de la HF se caracteriza por la presencia de trastornos del movimiento, alteraciones del comportamiento y deterioro cognitivo. El estudio de resonancia magnética nuclear muestra señales anormales en ambos globos pálidos y el putamen, así como también la cavitación del putamen. También puede observarse una atrofia moderada en el cerebro y el cerebelo. Desde el punto de vista neuropatológico la enfermedad de HF se caracteriza por una pérdida neuronal severa en los ganglios de la base, atrofia del...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Neurodegeneración; Ferritina; Hierro; Cuerpos de inclusión; Demencia; Modelos animales; Estrés oxidativo.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000100014

Guías de práctica del laboratorio clínico: Uso de marcadores tumorales en cáncer de testículo, próstata, colorrectal, mama y ovario Capítulo 3
Provedor de dados: 38
Tipo: Info:eu-repo/semantics/report
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000200020

La evaluación de tecnologías en salud como herramienta para la mejora de la gestión del laboratorio
Provedor de dados: 38
Autores: Schonfeld,Carlos.
En la década del '70 se produjeron profundas transformaciones tecnológicas que tensionaron las condiciones económicas de los sistemas de salud. Entre 1980 y 1990 hubo aportes trascendentales para la organización de la medicina. El ritmo de la innovación y de la información complicó los procesos de planeamiento. Los hallazgos científicos y su rápida aplicabilidad generaron un aumento de los costos de atención de salud, demandando alta inversión de capital, requerimientos de personal y, en el laboratorio, recalificación laboral y modificaciones organizativas. El proceso que se observa en el laboratorio es común a todo el sector salud a nivel mundial. Se ha desarrollado un enorme bagaje de conocimientos científicos y una tecnología más compleja, así como...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tecnología; Atención sanitaria; Laboratorio; Gestión; Efectividad; Gasto en salud; Salud pública.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000100015

Guías de práctica del laboratorio clínico: Uso de marcadores tumorales en cáncer de testículo, próstata, colorrectal, mama y ovario Capítulo 5
Provedor de dados: 38
Tipo: Info:eu-repo/semantics/article
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000400012

Semblanza del Dr. Rodolfo R. Brenner
Provedor de dados: 38
Autores: Córsico,Betina.
Tipo: Info:eu-repo/semantics/report
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000200006

Diagnóstico de infección por Trypanosoma cruzi en Centros de Atención Primaria de Salta, Argentina
Provedor de dados: 38
Autores: Sánchez Negrette,Olga; Monteros,María Concepción; Davies,Carolina; Zaidenberg,Mario Oscar.
La Enfermedad de Chagas causada por el parásito hemoflagelado Trypanosoma cruzi, constituye un grave problema de Salud Pública. En Argentina, se controla sistemáticamente la sangre a transfundir, la donación de órganos y se ha disminuido notablemente la transmisión vectorial. El objetivo de este proyecto fue implementar el uso del equipo para recolección de sangre capilar y conservación en glicerina (Serokit) en los servicios de enfermería de los Centros de Atención Primaria de la Salud en la ciudad de Salta a fin de conocer la seroprevalencia de infección por Trypanosoma cruzi en pacientes que concurren a los mismos. Para ello se realizó el par serológico HAI y ELISA en las muestras conservadas en Serokit y luego en muestras de sangre tomadas por punción...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atención primaria de salud; Enfermedad de Chagas; Serología; Niños; Trypanosoma cruzi; Prevención y control.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000400008

Sub-fenotipos de Diabetes y Metabolómica: ¿La clave para descubrir marcadores de laboratorio para una medicina personalizada?
Provedor de dados: 38
Autores: Lehmann,Rainer.
Tipo: Info:eu-repo/semantics/report
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000400011

Diagnostico de hipobetalipoproteinemia en un nino de 8 años?
Provedor de dados: 38
Autores: Arrobas Velilla,Teresa; Garcia Martin,Manuel; Rivera de la Rosa,Carmen; Orive de Dieg,Isabel; Cruz Mengibar,Carmen; Fabiani Romero,Fernando.
La hipobetalipoproteinemia familiar es un trastorno hereditario autosomico dominante que afecta a las lipoproteinas que contienen Apo B, una proteina indispensable para el transporte de los quilomicrones en el intestino y que ademas participa en la sintesis y transporte de las VLDL en el higado. La concentracion de Apo B se usa junto con otras pruebas lipidicas para establecer el riesgo individual de un paciente de desarrollar enfermedad cardiovascular. Presentacion del caso: Paciente de 8 anos, varon, que acude a la consulta de Pediatria del Hospital Universitario Virgen Macarena de Sevilla con sintomas de dolor abdominal, deposiciones blandas y diarreicas, sobrepeso y unas quebradizas. El paciente fue derivado al laboratorio para su estudio con sospecha...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hipobetalipoproteinemia; Apolipoproteína B; Colesterol; Dislipemia; Malabsorción intestinal; Estudio genético.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000400002

Bactericidia de hipoclorito de sodio sobre Staphylococcus cohnii productor de biofilm en una fabrica
Provedor de dados: 38
Autores: Porcel de Fernandez,Norma Dolores; Urueña,Raquel; Gaudioso de Allori,Maria Cristina; de Castillo,Marta Elena Cecilia.
En equipamientos industriales la persistencia de las bacterias se debe al desarrollo de biofilms. El hipoclorito de sodio (NaClO) es usado rutinariamente como desinfectante. El objetivo del trabajo fue determinar el efecto inhibitorio del NaClO sobre S. cohnii productoras y no productoras de biofilms aisladas de una fabrica de pastas a partir de maquinarias de un establecimiento de Tucuman, Argentina. Se estudio produccion de biofilm, concentracion inhibitoria minima (CIM), concentracion bactericida minima (CBM) y curva de tiempo de muerte con NaClO frente a S. cohnii productora y no productora de biofilm. Los resultados obtenidos demostraron que de los ocho cocos grampositivos aislados, cuatro correspondieron a S. cohnii. Los valores CIM y CBM para S....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Staphylococcus cohnii; Biofilms; Hipoclorito de sodio; Actividad antimicrobiana.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000400007

Homeostasis del glutatión
Provedor de dados: 38
Autores: Denzoin Vulcano,Laura Andrea; Soraci,Alejandro Luis; Tapia,Maria Ofelia.
El glutatión (GSH) es una molécula única que participa en aspectos esenciales de la homeostasis celular, teniendo un rol central en la defensa contra el daño oxidativo. El GSH (L-g-glutamil-L-cisteinil-glicina) es un tripéptido hidrosoluble formado por los aminoácidos ácido glutámico, cisteína y glicina que se encuentra presente en el citoplasma de todas las células. La forma oxidada de la molécula, GSSG, se encuentra principalmente en forma extracelular. Las concentraciones de GSH y GSSG y su relación molar son indicadores de la funcionalidad celular y su alteración está relacionada con varios procesos patológicos en el hombre y en los animales de compañía. En esta revisión se abordan importantes aspectos de la homeostasis, las principales funciones...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glutatión; Glutatión oxidado; Estrés oxidativo; Ciclo y-glutamil.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572013000300007

New records of bryophytes for the state of Rio Grande do Sul, Brazil
Provedor de dados: 39
Autores: Heidtmann,Leandro Pereira; Peralta,Denilson Fernandes; Giroldo,Danilo; Hefler,Sonia Marisa.
The aim of this study was to complete the species list and disseminate data regarding the diversity of bryophytes in the state of Rio Grande do Sul, Brazil. We registered 51 species of bryophytes (11 mosses and 40 liverworts) as new records for Rio Grande do Sul, of which six represent the second records for Brazil.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Liverworts; Mosses; New records; Taxonomy.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000300021

Atypical distyly in Psychotria goyazensis Mull. Arg. (Rubiaceae), an intramorph self-compatible species
Provedor de dados: 39
Autores: Rodrigues,Ebenezer Barbosa; Consolaro,Hélder.
Distyly is a genetically controlled floral dimorphism, characterized by the reciprocal positioning of pin and thrum morphs, a heteromorphic incompatibility system and a balanced morph ratio (isoplethy). This study aimed to investigate the phenology, features of distyly, reproductive biology, and floral visitors of Psychotria goyazensis Mull. Arg. (Rubiaceae), an intramorph self-compatible species, in a tropical semideciduous forest in the municipality of Catalão, located in the state of Goiás, Brazil. The phenology was recorded for a sample of individuals, the floral morphology being described using fresh and fixed material. The incompatibility system was tested using controlled hand pollinations. Floral visitors were collected and identified. Blooming...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Heterostyly; Monomorphism; Cerrado; Reproductive biology.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100016

Phenological synchrony and seasonality of understory Rubiaceae in the Atlantic Forest, Bahia, Brazil
Provedor de dados: 39
Autores: Liuth,Heitor Scarpati; Talora,Daniela Custódio; Amorim,André Márcio.
In tropical forests with low seasonality, climatic variables generally exert a weak influence on the phenology of species. The seasonality of phenophases in closely related taxa can be controlled by phylogenetic constraints in such environments. In this study, our aim was to describe the phenology of Rubiaceae in the understory of the Atlantic Forest in the southern part of Bahia, Brazil, as well as to evaluate the seasonality and phenological synchrony of this family. For two years, we observed 90 individuals belonging to 13 species, in an area of 0.2 ha. Leaf flushing and leaf fall did not demonstrate any seasonality, were continuous for most species and correlated with few of the climatic variables. Flowering was seasonal and correlated positively with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Leaf flushing; Phenology; Flowering; Fruiting; Psychotria.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100019

Structure and diversity of restingas along a flood gradient in southeastern Brazil
Provedor de dados: 39
Autores: Magnago,Luiz Fernando Silva; Martins,Sebastião Venâncio; Schaefer,Carlos Ernesto Goncalves Reynaud; Neri,Andreza Viana.
This study aimed to relate changes in structure and species diversity with edaphic variables (soil type and flooding regime) in a gradient of forest formations within the Brazilian restingas (coastal woodlands). The study was carried out in the Jacarenema Municipal Natural Park, in the city of Vila Velha, in the Espírito Santo State, Brazil. We evaluated the structure of shrub and tree components by sampling 80 plots of 5 × 25 m each, equally distributed among four forest types (well-drained, transitional, floodplain and flooded). We included all individuals with a ≥ 3.2 cm diameter at breast height. From each plot, soil samples (for chemical and physical analysis) were collected at a depth of 0-10 cm. We identified a significant fertility gradient (of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Espírito Santo; Forest ecology; Soil gradient; Species selectivity; Edaphic variations.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000400020

Sowing seeds for the future: the need for establishing protocols for the study of seed dormancy
Provedor de dados: 39
Autores: Silveira,Fernando Augusto Oliveira.
Seed dormancy is a widely misunderstood plant trait. In several research areas, a lack of germination is wrongly assumed to result from seed dormancy. In an attempt to standardize seed dormancy research and improve communication among seed scientists, a straightforward protocol to address the occurrence and causes of seed dormancy is provided. Standardizing communication is not just a theoretical exercise but also has practical implications in agriculture and conservation. Standardization will make studies comparable and hence we will have a deeper understanding of the physiology, ecology and evolution of seed dormancy. A better understanding of the various aspects of seed dormancy will lead to greater appreciation of the biogeographical and phylogenetic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dormancy classification system; Viability; Embryoless seeds; Lack of germination.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000200003

Pollen grains in quaternary sediments from the Campos Basin, state of Rio de Janeiro, Brazil: Core BU-91-GL-05
Provedor de dados: 39
Autores: Freitas,Aline Gonçalves de; Carvalho,Marcelo de Araujo; Mendonça,Claudia Barbieri Ferreira; Gonçalves-Esteves,Vania.
Here, we describe pollen grains extracted from a Pleistocene-Holocene sediment core (BU-91-GL-05; 22°48'45"S; 41°54'13"W) taken from the Albacora Slope (22°48'45"S; 41°54'13"W), located in the Campos Basin of the northern region of the state of Rio de Janeiro, Brazil. The analysis resulted in the identification and morphological description of 46 types of pollen: one of a gymnosperm genus (Podocarpus); and 45 of angiosperm taxa across 27 families-one family of monocotyledons (Poaceae) and 26 families (30 types) of dicotyledons. The most common angiosperm families were Amaranthaceae (Chenopodium, Amaranthus and Gomphrena); Fabaceae (Fabaceae type, Bauhinia, Inga and Canavalia); Malpighiaceae (Tetrapteris, Heteropteris and Peixotoa); Malvaceae (Sida,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Palynology; Pollen descriptions; Paleovegetation; Quaternary; Campos Basin.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000400016

Mixed rain forest in southeastern Brazil: tree species regeneration and floristic relationships in a remaining stretch of forest near the city of Itaberá, Brazil
Provedor de dados: 39
Autores: Ribeiro,Tiago Maciel; Ivanauskas,Natália Macedo; Martins,Sebastião Venâncio; Polisel,Rodrigo Trassi; Santos,Rochelle Lima Ramos dos; Miranda Neto,Aurino.
The aim of this work was to evaluate the floristic composition, richness, and diversity of the upper and lower strata of a stretch of mixed rain forest near the city of Itaberá, in southeastern Brazil. We also investigated the differences between this conservation area and other stretches of mixed rain forest in southern and southeastern Brazil, as well as other nearby forest formations, in terms of their floristic relationships. For our survey of the upper stratum (diameter at breast height [DBH] &amp;gt; 15 cm), we established 50 permanent plots of 10 × 20 m. Within each of those plots, we designated five, randomly located, 1 × 1 m subplots, in order to survey the lower stratum (total height &amp;gt; 30 cm and DBH &lt; 15 cm). In the upper stratum, we...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Araucaria angustifolia; Cluster analysis; Ecotone; Phytogeography; Phytosociology.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100010

Availability and use of woody plants in a agrarian reform settlement in the cerrado of the state of Goiás, Brazil
Provedor de dados: 39
Autores: Tunholi,Vanessa Pessanha; Ramos,Marcelo Alves; Scariot,Aldicir.
Protected areas are important sources providing plant resources for human populations, and contributing to the livelihood and income of families. To test the ecological apparency hypothesis, that there is positive relationship between the visibility of a species and its use, we conducted an ethnobotanical survey in the protected area of the Itaúna rural settlement in the municipality of Planaltina, in the state of Goiás, in central Brazil. The phytosociological parameters were obtained in 5.6 ha area of the Brazilian cerrado (savanna), and the ethnobotanical survey conducted with semi-structured interviews with 75 people. There was a weak positive correlation between the use value and the phytosociological parameters. A principal component analysis showed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cerrado; Ecological apparency; Use value; Ethnobotany; Phytosociology.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000300018

Pollen morphology of Menispermaceae in the state of Bahia, Brazil
Provedor de dados: 39
Autores: Teixeira,Michella Del Rei; Amorim,André Márcio; Santos,Francisco de Assis Ribeiro dos.
There have been few palynological studies of the family Menispermaceae. Here, we analyzed the pollen grains of 12 species from seven genera of Menispermaceae occurring in the state of Bahia, Brazil: Abuta selloana Eichl.; Borismene japurensis (Mart.) Eichl.; Chondrodendron microphyllum (Eichl.) Moldenke; C. platyphyllum (A.St.-Hil.) Miers; Cissampelos andromorpha DC.; C. ovalifolia DC.; C. pareira L.; C. sympodialis Eichl.; Hyperbaena domingensis (DC.) Benth.; Odontocarya duckei Barneby; Sciadotenia campestris Barneby; and S. pubistaminea (K. Schum.) Diels. The pollen grains were acetolysed, measured, described, and illustrated using light and scanning electron microscopy. The pollen grains were found to be small, oblate spheroidal or prolate spheroidal,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Palynology; Taxonomy; Stenopalynous.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000200016

Taxonomic studies of Amanita muscaria (L.) Lam (Amanitaceae, Agaricomycetes) and its infraspecific taxa in Brazil
Provedor de dados: 39
Autores: Wartchow,Felipe; Maia,Leonor Costa; Cavalcanti,Maria Auxiliadora de Queiroz.
We analyzed specimens identified as Amanita muscaria, some recently collected and others already deposited in herbaria, in Brazil. We concluded that two subspecies of A. muscaria occur in Brazil: A. muscaria var. muscaria; and A.muscaria var. flavivolvata. The first taxon was found in association with Castanea sativa, and the second (one specimen only) was found in association with Pinus and Eucalyptus spp. Morphologically, A. muscaria var. flavivolvata is distinguished by a shallower subhymenium and by basidiospores that are more elongated than are those of A. muscaria var. muscaria, which is the more widely known subspecies. We present descriptions, discussions, illustrations and a dichotomous key for these two subspecies.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agaricales; Basidiomycota; Mushroom; Taxonomy.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100005

Interspecific variation in the allelopathic potential of the family Myrtaceae
Provedor de dados: 39
Autores: Imatomi,Maristela; Novaes,Paula; Gualtieri,Sonia Cristina Juliano.
Allelopathy is a type of biotic interference wherein a plant releases bioactive metabolites into an environment, thereby affecting the adjacent biota. Stressful environments stimulate the production of these metabolites. The present study tests the novel weapons hypothesis, which postulates that species belonging to the same genus and from the same environment have similar allelopathic effects. The aim of this study was to assess the allelopathic effects that the aqueous leaf extracts of 15 species belonging to five genera of the Myrtaceae family have on the seed germination and initial seedling growth of lettuce (Lactuca sativa L.), tomato (Solanum lycopersicum L.) and onion (Allium cepa L.). Germination rates, average germination times, informational...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allelopathy; Aqueous leaf extract; Genus similarity; Germination.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100008

Foliar application of 28-homobrassinolide mitigates salinity stress by increasing the efficiency of photosynthesis in Brassica juncea
Provedor de dados: 39
Autores: Alyemeni,Mohammed Nasser; Hayat,Shamsul; Wijaya,Leonard; Anaji,Abdullah.
Prior to sowing, seeds of Brassica juncea Czern and Coss cv. Varuna were soaked in water (controls) or in 50, 100 or 150 mM of sodium chloride (NaCl) for 6 h. The resulting plants, at 15, 30 and 45 days after sowing (DAS) were either not treated (controls) or were treated with aqueous solutions of the hormone 28-homobrassinolide (HBL), which was applied to their foliage in concentrations of 10-10, 10-8 or 10-6 M. The concentration of NaCl showed an inverse correlation with the activity of nitrate reductase (EC 1.6.6.1), the activity of carbonic anhydrase (EC 4.2.1.1), chlorophyll content at 60 DAS, the rate of photosynthesis at 60 DAS, and seed yield at 140 DAS (at harvest), all of which decreased in parallel with increases in NaCl concentration. However,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carbonic anhydrase; Chlorophyll; Homobrassinolide; Nitrate reductase; Seed yield.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000300007

Pollen analysis of the post-emergence residue of Melipona (Melikerria) interrupta Latreille (Hymenoptera: Apidae) bred in the central Amazon region
Provedor de dados: 39
Autores: Ferreira,Marcos Gonçalves; Absy,Maria Lúcia.
We applied an "adapted" protocol for collecting and processing pollen grains in the pollen analysis of the post-emergence residue of Melipona (Melikerria) interrupta Latreille. The study was conducted at the Sant'Ana honey farm, located on the banks of the Solimões River, in the municipality of Manacapuru, in the state of Amazonas, Brazil, where a colony was monitored in October and November 2010. From that colony, 10 samples of post-emergence residue were collected. Unlike in the acetolysis method, there was no need to expose pollen grains to an acidic medium, because pollen loses its content during the larval digestive process. We identified 32 pollen types, from 19 botanical families, plus three undetermined pollen types. The most representative family...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Stingless bees; Palynology; Pollen; Floral resources.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000400009

Morphology and viability of pollen grains from passion fruit species (Passiflora spp.)
Provedor de dados: 39
Autores: Soares,Taliane Leila; Jesus,Onildo Nunes de; Souza,Everton Hilo de; Santos-Serejo,Janay Almeida dos; Oliveira,Eder Jorge de.
The characterization and viability of pollen grains are useful tools to guide crosses in breeding programs. The objective of this study was to describe the morphological patterns and viability of pollen grains from five accessions of Passiflora edulis f. flavicarpa O. Deg. and five accessions of Passiflora setacea DC. Pollen morphology descriptions were made using light microscopy and scanning electron microscopy, whereas the viability analysis was performed by in vitro germination and histochemical analysis (Lugol's solution and 2,3,5-triphenyltetrazolium chloride). Pollen grains assessed for germination were inoculated in culture medium containing Ca(NO3).4H2O (0.03%), Mg(SO4).7H2O (0.02%), KNO3 (0.01%), H3BO3 (0.01%), sucrose (15%) and agar (0.8%)....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: In vitro germination; Histochemistry; Scanning electron microscopy; Passifloraceae; Pollen tube.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000400018

Wood-decaying Agaricomycetes (Basidiomycota, Fungi): new records for the state of Santa Catarina, Brazil
Provedor de dados: 39
Autores: Gerlach,Alice da Cruz Lima; Campos-Santana,Marisa de; Gutjahr,Márcio; Loguercio-Leite,Clarice.
In this study, we identified six polyporoid species of Agaricomycetes: Abundisporus roseoalbus, Fuscocerrena portoricensis, Oligoporus caesius, Antrodiella duracina, Inocutis jamaicensis and Inonotus venezuelicus. All of these represent new records for the state of Santa Catarina, located in southern Brazil. For Brazil as a whole, this is the second record of O. caesius.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Fungal diversity; Polypores; Taxonomy.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000200019

Structure and floristic pattern of a coastal dunes in southeastern Brazil
Provedor de dados: 39
Autores: Giaretta,Augusto; Menezes,Luis Fernando Tavares de; Pereira,Oberdan José.
The Brazilian shrublands area (restinga) is composed of marine coast vegetation on Quaternary sandy plains, where the species composition can vary depending on the surrounding ecosystems. The aims of this study were to describe the structure and floristic composition of a restinga near the community of Itaúnas, in the northern part of the state of Espírito Santo, to identify any relationships between this restinga and surrounding plant formations, and to determine which are the species that occur preferentially in the coastal forests of Espírito Santo. We sampled woody plants with a diameter at breast height &gt; 2.5 cm, excluding lianas, in 50 plots of 100 m². We selected studies of coastal forests in the states of Espírito Santo and Bahia to prepare a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phytosociology; Phytogeography; Pleistocene restinga; Espírito Santo; Itaúnas.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100011

Ethnobotanical and ethnoecological study of Butia catarinensis Noblick &amp;amp; Lorenzi: contributions to the conservation of an endangered area in southern Brazil
Provedor de dados: 39
Autores: Kumagai,Leonardo; Hanazaki,Natalia.
Butia catarinensis Noblick &amp;amp; Lorenzi is a small palm (approximately 2 m high when full-grown) endemic to the southern coast of Brazil. Local farmers use the fruit and pulp for various purposes, and this extractive activity complements their income. The objective of this study was to understand the relationships between local people and B. catarinensis in its natural environment. Ethnobotanical and ethnoecological data were collected through participant observation, participatory research tools and semi-structured interviews. The density of B. catarinensis was measured in two areas, each containing twelve 10 m × 20 m plots. Interviewees recognized different varieties of the palm, its phenological stages, as well as potential pollinators and seed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arecaceae; Atlantic Rainforest; Ethnobotany; Population ecology; Coastal sand dune vegetation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100002

Pollen morphology of Centaurea L. (Asteraceae) in Iran
Provedor de dados: 39
Autores: Shabestari,Elaheh Sadat Bagheri; Attar,Farideh; Riahi,Hosein; Sheidai,Masoud.
The genus Centaurea L. is one of the largest genera in the family Asteraceae. The number of taxa included in this genus ranges from 500 to 600 worldwide. Iran is one of the major centers of diversity for this genus. Pollen morphology has proved useful in the systematics of Asteraceae, as well as in that of some of its genera and species. The pollen morphology of 19 taxa of the genus Centaurea was investigated in detail by light and scanning electron microscopy. Examination under light microscopy showed pollen grains to be tricolporate, isopolar, radially symmetrical, oblate spheroidal, prolate spheroidal, subprolate, tectum perforate and scabrate. Based on the exine ornamentation observed under scanning electron microscopy, we identified two types of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Centaurea; Palynology; Exine ornamentation; Light microscopy; Scanning electron microscopy.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000400004

Bryophytes on rocky outcrops in the caatinga biome: a conservationist perspective
Provedor de dados: 39
Autores: Silva,Joan Bruno; Germano,Shirley Rangel.
In the state of Paraíba, Brazil, there is an abundance of rocky outcrops, which are typical elements of the semi-arid landscape. Those outcrops provide refuge to species with morphological adaptations to stressful climates and to rare communities of plants, including bryophytes. Nevertheless, there have been no studies of bryophytes in such habitats in the state. Therefore, this work aimed to inventory bryophytes on two outcrops in the municipality of Puxinanã, in Paraíba, addressing some of the ecological aspects of survival in xerophytic environments. Samples were collected once every two weeks from February 2010 to May 2011. The usual techniques of bryophyte sampling and herbarium preservation were employed. We recorded 21 bryophyte species (six...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bryophyte; Inselberg; Morphological adaptations; Nonvascular flora; Semi-arid; Northeastern Brazil.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000400023

Seed bank composition in a secondary forest in the Lower Delta of the Paraná River (Argentina)
Provedor de dados: 39
Autores: Kalesnik,Fábio; Sirolli,Horacio; Collantes,Marta.
The native forests once occupying the coastal levees of the Lower Delta islands of the Paraná River (in Argentina) have been replaced by commercial forests. Many of those forests have been abandoned, resulting in secondary forest formation that is subject to numerous invasive exotic species. A priori observations suggest that successional trends do not lead to recovery of the original forest. The aim of the present study was to analyze the role of invasive exotic species in these environments and the likelihood of recovery of the original forest cover. Therefore, we examined the composition of the seed bank and of the standing vegetation, as well as the population structure of tree species. Secondary forests are described as being in an intermediate...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chinese privet (Ligustrum sinense); Invasive species; Post-abandonment regeneration; Riparian forest; Seedling emergence.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100006

Notes on the chemical variation of the lichenized Ascomycota Cladia aggregata (Cladoniaceae) in the states of Paraná and Santa Catarina, Brazil
Provedor de dados: 39
Autores: Charnei,Ana Marcia; Eliasaro,Sionara.
The chemical compounds of Cladia aggregata from the states of Paraná and Santa Catarina were analyzed, resulting in five chemotypes. The chemotypes are as follows: barbatic and 4-O-demethylbarbatic acid; barbatic, 4-O-demethylbarbatic, and homosekikaic acid; barbatic, 4-O-demethylbarbatic and diffractaic, or barbatic and diffractaic acid; barbatic, 4-O-demethylbarbatic, and fumarprotocetraric acid; and barbatic, 4-O-demethylbarbatic, and stictic acid.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Barbatic acid; Diffractaic acid; Fumarprotocetraric acid; Homosekikaic acid; Stictic acid.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000300020

Allelopathic research in Brazil
Provedor de dados: 39
Autores: Reigosa,Manuel; Gomes,Anabele Stefânia; Ferreira,Alfredo Gui; Borghetti,Fabian.
In this article, we review allelopathy studies conducted in Brazil or involving plant species that occur in the country. Conceptions and misconceptions associated with allelopathy, as well as some international criteria to be applied in allelopathic research, are presented and discussed. We observed a sharp increase in the number of papers on this subject conducted in Brazil between 1991 and 2010. However, most studies are conducted under laboratory conditions, lack a clear hypothesis or a solid justification, and typically make use of target species that do not co-exist with the donor species under natural conditions. We also found that most studies do not take the additional steps in order to purify and identify the bioactive molecules. We recommend that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allelopathy; Allelochemicals; Competition; Interference; Phytotoxicity; Weed control.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000400001

Two mistletoes are too many?: Interspecific occurrence of mistletoes on the same host tree
Provedor de dados: 39
Autores: Arruda,Rafael; Lunardelli,Caroline; Kitagawa,Clóvis; Caires,Claudenir Simões; Teodoro,Grazielle Sales; Mourão,Fabiana Alves.
Mistletoe can have a major impact on the fitness of the host plant. If there is more than one species of mistletoe on the same host tree, the overall impact might be amplified. We report the occurrence of more than one species of mistletoe on the same host tree. Although it is not a rule in the field, to our knowledge, there have been no studies of this topic. In most cases, two species of mistletoe were recorded on the same host tree, although we recorded three species of mistletoe on one occasion. This demonstrates that different species of mistletoe can be compatible with the same host species. Therefore, compatibility (structural and physiological) might be an important factor for the occurrence of mistletoe. Recent studies have shown that if the...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Parasite-host relationship; Compatibility; Specificity; Parasitic plants; Red Queen hypothesis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100021

Community dynamics in a species-rich patch of old-growth forest in a global changing scenario
Provedor de dados: 39
Autores: Gastauer,Markus; Meira Neto,João Augusto Alves.
Ecological theory predicts that, in mature ecosystems, species richness, the number of individuals and the biomass of individuals will remain in a relatively stable state of equilibrium. The aim of this study was to test that theory. In 2001 and 2010, we conducted censuses of all trees with a circumference at breast height &amp;gt; 10 cm in a one-hectare plot in a seasonal semideciduous old-growth forest in southeastern Brazil. We compared the two censuses in terms of species richness and diversity, computing growth, recruitment and mortality rates, as well as gains and losses of basal area. Between 2001 and 2010, species richness declined from 224 to 218 species and the basal area increased from 37.86 to 40.16 m² ha-1. Overall turnover (the mean...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Community dynamics; Habitat loss; Immigration rate; Landscape fragmentation; Species richness.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000200004

Structure and dynamics of the community of periphytic algae in a subtropical reservoir (state of São Paulo, Brazil)
Provedor de dados: 39
Autores: Taniwaki,Ricardo Hideo; Borghi,Tatiana Cintra; Magrin,Albano Geraldo Emílio; Calijuri,Maria do Carmo; Bottino,Flávia; Moschini-Carlos,Viviane.
Much remains to be learned about biological diversity, which constitutes a valuable natural resource. Due to the pressure that human activity has put on natural resources, biodiversity has been reduced, often unbeknownst to those responsible for that activity. Therefore, we aimed to perform a quantitative and qualitative analysis of periphytic algae in the Itupararanga reservoir, correlating the results with the physical and chemical characteristics of the water, as well as with climatic conditions. To that end, five samples were collected at four sampling stations in the Itupararanga reservoir during the year 2010. Aquatic macrophytes were collected with a 156-cm² frame, and the periphytic algae were scraped free of the macrophytes with a brush. Samples...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Periphyton; Macrophytes; Water quality; Detrended correspondence analysis; Principal components analysis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000300013

Species richness and distribution of bryophytes within different phytophysiognomies in the Chapada Diamantina region of Brazil
Provedor de dados: 39
Autores: Valente,Emilia de Brito; Pôrto,Kátia Cavalcanti; Bastos,Cid José Passos.
The Chapada Diamantina ecoregion is within the caatinga (shrublands) biome of Brazil. Environmental factors determine the phytophysiognomies that distinguish the ecoregion from the surrounding areas. This study aimed to investigate the distribution of bryophyte flora in this ecoregion, by phytophysiognomy and elevational zone. Analyzing specimens we collected from five municipalities in the region, together with specimens (previously collected from the region) in herbaria, we identified 400 taxa. The phytophysiognomies that presented the highest species richness and the greatest numbers of exclusive taxa were forests and campos rupestres (dry, rocky grasslands), which respectively accounted for 51% and 40% of the taxa, compared with only 5% and 4%,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mosses; Liverworts; Forests; Campos rupestres; Elevational zonation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000200006

Lycophytes and monilophytes in Rio Preto State Park, Minas Gerais, Brazil
Provedor de dados: 39
Autores: Salino,Alexandre; Mota,Nara Furtado de Oliveira; Almeida,Thaís Elias.
We conducted a floristic survey of lycophytes and monilophytes in Rio Preto State Park, located in the municipality of São Gonçalo do Rio Preto, and in the surrounding areas, including the municipality of Felício dos Santos, in the state of Minas Gerais, Brazil. The study area is within the Espinhaço Mountain Range. Collections were made from June 1999 to August 2008, and the specimens were deposited in the Herbarium of the Federal University of Minas Gerais. Were identified 188 taxa (185 species, one subspecies and two varieties), distributed among 20 families and 60 genera. The most representative families were Polypodiaceae, with 35 species; Pteridaceae, with 24 species; Dryopteridaceae, with 23 species; Hymenophyllaceae, with 17 species; and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Espinhaço Range; Floristic; Rio Preto Basin; Cerrado.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000200002

A triangular Eunotia (Bacillariophyceae) in southeastern Brazil: Eunotia trigona sp. nov.
Provedor de dados: 39
Autores: Fuhrmann,André; Metzeltin,Ditmar; Tremarin,Priscila Izabel.
We report a new diatom species for the Atlantic Forest of Brazil. The species, designated Eunotia trigona Fuhrmann, Metzeltin &amp;amp; Tremarin sp. nov., is also new to science. It was found on moss in the Itatiaia mountain range in the state of São Paulo. Among the Eunotia taxa, E. trigona is distinguished by its unusual (perhaps unique) triangular-shaped valve, similar to those found in a few species of the genera Staurosira and Staurosirella.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eunotiaceae; Itatiaia National Park; Neotropics; South America.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000400007

Floristic and phytosociological analysis of palm swamps in the central part of the Brazilian savanna
Provedor de dados: 39
Autores: Resende,Isa Lucia de Morais; Chaves,Lázaro José; Rizzo,José Ângelo.
We analyzed the floristics and phytosociology of three palm swamps in the municipality of Bela Vista de Goiás, located in the state of Goiás, Brazil, in the central part of the Brazilian savanna (Cerrado). The floristic surveys were conducted monthly from May 2008 to April 2009, and 310 species were recorded (seven bryophytes, 15 ferns and 288 angiosperms). Bryophytes belonged to five genera and five families; ferns belonged to nine genera and nine families; and angiosperms belonged to 134 genera and 45 families. The angiosperm families with the highest species richness were Poaceae, Cyperaceae, Asteraceae, Eriocaulaceae, Xyridaceae, Lentibulariaceae, Melastomataceae, Rubiaceae and Fabaceae. The palm swamps were divided into three zones of increasing...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Wetlands; Brazilian savanna; Plant diversity.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100020

Diatoms (Bacillariophyceae) of Iguaçu National Park, Foz do Iguaçu, Brazil
Provedor de dados: 39
Autores: Bartozek,Elaine Cristina Rodrigues; Bueno,Norma Catarina; Ludwig,Thelma Alvim Veiga; Tremarin,Priscila Izabel; Nardelli,Margaret Seghetto; Rocha,Angélica Cristina Righetti da.
This study represents a taxonomic survey of class Bacillariophyceae diatoms found in samples collected in the Iguaçu River (Iguaçu National Park, municipality of Foz do Iguaçu, in the state of Paraná, Brazil) between August 2007 and July 2008. Two sampling stations were utilized, the first located upstream of Iguaçu Falls (Cais Bananeiras Station) and second downstream of the falls (Cais Macuco Safari Station). The study resulted in the identification of 86 taxa, including 74 at the specific level and seven taxonomic varieties. Two of these had never before been documented in the state of Paraná: Gomphonema gibberum Hustedt and Pinnularia meridiana Metzeltin &amp;amp; Krammer. Nine are first-time records for Brazil: Cymbella charrua Metzeltin,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Taxonomy; Microalgae; Lotic system; State of Paraná.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100012

Richness, geographic distribution and ecological aspects of the fern community within the Murici Ecological Station in the state of Alagoas, Brazil
Provedor de dados: 39
Autores: Pereira,Anna Flora de Novaes; Silva,Ivo Abraão Araújo da; Santiago,Augusto César Pessôa; Barros,Iva Carneiro Leão.
We conducted a floristic survey of ferns within the Murici Ecological Station (remnant of the northeastern Atlantic Forest), located near the municipalities of Messias and Murici, in the state of Alagoas, Brazil. To increase knowledge of the ferns of Alagoas, we evaluated the species occurring in the study area in terms of richness, composition, geographic distribution, similarities with species in other Brazilian biomes, regional conservation status and ecological aspects. Data were obtained from field work conducted between March 2009 and September 2010. We identified 107 species of ferns, of which 19 represent new records for Alagoas. The richest families were Pteridaceae (29 species) and Polypodiaceae (22 species). The richest genera were Adiantum (15...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic Forest; Conservation; Floristic composition; Seedless vascular plants.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000400019

Floristic composition and community structure of epiphytic angiosperms in a terra firme forest in central Amazonia
Provedor de dados: 39
Autores: Irume,Mariana Victória; Morais,Maria de Lourdes da Costa Soares; Zartman,Charles Eugene; Amaral,Iêda Leão do.
This survey aimed to describe the floristic composition and structure of the epiphytic community occurring in a terra firme forest in the city of Coari, Brazil, in the Amazon region. Data collection was performed with a 1.5 ha plot method, with which upland, slope and lowland habitats were sampled. All angiosperm epiphytes and their host plants (diameter at breast height &gt; 10 cm) were sampled. We recorded 3.528 individuals in 13 families, 48 genera and 164 species. Araceae was the most prevalent family with regard to the importance value and stood out in all related parameters, followed by Bromeliaceae, Cyclanthaceae and Orchidaceae. The species with the highest epiphytic importance values were Guzmania lingulata (L.) Mez. and Philodendron linnaei...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazon rainforest; Epiphytic groups; Composition; Diversity; Distribution.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000200012

Phenology, biometric parameters and productivity of fruits of the palm Butia capitata (Mart.) Beccari in the Brazilian cerrado in the north of the state of Minas Gerais
Provedor de dados: 39
Autores: Silva,Priscila Albertasse Dutra da; Scariot,Aldicir.
The fruits of the palm Butia capitata are harvested from wild populations. A lack of knowledge of their ecology has hindered the establishment of sustainable management practices. We investigated fruit biometric parameters, yield and phenology in two populations of B. capitata in the cerrado (savanna) in the north of the state of Minas Gerais, Brazil, at two study sites: in the communities of Mirabela (Fazenda Baixa site, studied from December 2006 through December 2007) and Campos (studied throughout 2007). Overall, adult palms produced an annual average of 7.6 leaves. At the Fazenda Baixa site, the mean annual number of infructescences was 4.9, compared with only 1.6 at the Campos site, and the annual yield was 197-373 and 145-468 fruits per tree (in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Extractivism; Fruiting; Management; Coquinho-azedo; Post-harvest ripening.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000300015

Bryoflora of the municipalities of Soure and Cachoeira do Arari, on Marajó Island, in the state of Pará, Brazil
Provedor de dados: 39
Autores: Brito,Eliete da Silva; Ilkiu-Borges,Anna Luiza.
This study aims to investigate the richness and ecological aspects (ecosystem and substrate) of mosses and liverworts at two municipalities on Marajó Island, in the state of Pará, Brazil. The study area (6615 km²) encompasses the municipalities of Soure and Cachoeira do Arari. Bryophytes were collected from the 10th to the 16th of January, 2007, during random visits along existing trails or during the forging of new trails, from all possible types of vegetation, regardless of the type of substrate. The ecosystems visited in the study area were capoeira (secondary vegetation, growing on land that has been burned or cleared), teso (vegetation growing on areas of land at an elevation slightly higher than the water line during flood season), floodplain forest,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bryophyta; Marchantiophyta; Bryophytes; Amazon; Neotropics.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100013

Fruit biometry and seed germination of Syagrus romanzoffiana (Cham.) Glassm
Provedor de dados: 39
Autores: Goudel,Flora; Shibata,Marília; Coelho,Cileide Maria Medeiros; Miller,Paul Richard Momsen.
Syagrus romanzoffiana (Cham.) Glassm. is a species native to Brazil that is of ecological and aesthetic importance. This study aims to describe the biometric characteristics of S. romanzoffiana fruits and to assess the effects that treatments meant to overcome dormancy and partial drying have on seed germination. For biometric characterization, each repetition consisted of 50 fruits from eight clusters (total, 400 fruits). To evaluate methods for overcoming dormancy, seeds representative of populations were treated by perforation of the operculum; perforation of the operculum and immersion in water for 24 hours; cracking; exposure to fire for three minutes; and non-removal of fibers. There was also a control group. In a second experiment, seeds were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dormancy; Syagrus romanzoffiana; Palm; Drying; Variability.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100015

Ecological factors affecting the fruiting success of a Tibouchina trichopoda (DC.) Baill. (Melastomataceae) flower
Provedor de dados: 39
Autores: Maia,Fabiano Rodrigo da; Malucelli,Tiago Simões; Varassin,Isabela Galarda.
The abundance and distribution of resources for pollinators modulate the reproduction of plants. This study attempted to determine whether and how the fruiting success of Tibouchina trichopoda flowers varies due to plant size, number of flowers produced, distance between individuals and cardinal orientation of the flowers. From July 2009 to February 2010, we conducted monthly evaluations of 21 plants in an area of regenerating forest within the Atlantic Forest biome, located near the municipality of Antonina, in southern Brazil. Floral density was monitored weekly. During the study period, the species bloomed twice: once during the cool, dry season, showing an extended flowering period with scattered flowering individuals; and once during the hot, rainy...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Resource allocation; Atlantic Rainforest; Plant-pollinator interactions; Population density; Floral longevity.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100014

Symbiotic propagation of seedlings of Cyrtopodium glutiniferum Raddi (Orchidaceae)
Provedor de dados: 39
Autores: Guimarães,Fernanda Aparecida Rodrigues; Pereira,Marlon Corrêa; Felício,Cristiane da Silva; Torres,Denise Pereira; Oliveira,Sabrina Feliciano; Veloso,Tomás Gomes Reis; Kasuya,Maria Catarina Megumi.
In nature, orchid seeds obtain the nutrients necessary for germination by degrading intracellular fungal structures formed after colonization of the embryo by mycorrhizal fungi. Protocols for asymbiotic germination of orchid seeds typically use media with high concentrations of soluble carbohydrate and minerals. However, when reintroduced into the field, seedlings obtained via asymbiotic germination have lower survival rates than do seedlings obtained via symbiotic germination. Tree fern fiber, the ideal substrate for orchid seedling acclimatization, is increasingly scarce. Here, we evaluated seed germination and protocorm development of Cyrtopodium glutiniferum Raddi cultivated in asymbiotic media (Knudson C and Murashige &amp;amp; Skoog) and in oatmeal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Epulorhiza sp.; Symbiosis; Orchid; Substrate; Fern fiber.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000300016

Taxonomic revision of Pseudolaelia Porto &amp;amp; Brade (Laeliinae, Orchidaceae)
Provedor de dados: 39
Autores: Menini Neto,Luiz; Forzza,Rafaela Campostrini; van den Berg,Cassio.
Pseudolaelia is a genus endemic to eastern Brazil. The species are often epiphytes on Velloziaceae or are saxicolous, predominantly on granitic and gneissic outcrops (inselbergs) in the Atlantic Forest and, less often, in the campos rupestres (dry, rocky grasslands) of the cerrado (savanna) and caatinga (shrublands). The genus is characterized by homoblastic pseudobulbs, long rhizomes, long and usually slender inflorescences, racemes or panicles, bearing pink, yellow or whitish flowers, labellum often 3-lobed, with simple, fimbriate or erose margin, semi-cylindrical or claviform column, cuniculus present. Twelve species are recognized; seven binomials are placed in synonymy. Of those seven, three are considered illegitimate because, contrary to the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eastern Brazil; Campo rupestre; Conservation; Inselberg; Taxonomy.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000200015

Relationships between structure of the tree component and environmental variables in a subtropical seasonal forest in the upper Uruguay River valley, Brazil
Provedor de dados: 39
Autores: Mélo,Máida Ariane de; Budke,Jean Carlos; Henke-Oliveira,Carlos.
This study aimed to analyze relationships among the structure of the tree component, edaphic variables and canopy discontinuity along a toposequence in a seasonal upland (hillside) forest in southern Brazil. Soil and vegetation were sampled in 25 plots of 20 × 20 m each. We described the vegetation in terms of structure, richness and diversity, as well as by species distribution patterns. We evaluated canopy continuity, determined sloping and calculated spatial coordinates. We applied partial canonical correspondence analysis (pCCA) to determine whether species distribution correlated with environmental and spatial variables. We identified 1201 individuals belonging to 76 species within 30 families. The species with highest density and frequency were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sloping; Soil drainage; Spatial autocorrelation; Toposequence.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000400015

A simple procedure for the purification of active fractions in aqueous extracts of plants with allelopathic properties
Provedor de dados: 39
Autores: Borghetti,Fabian; Lima,Elisa Coutinho de; Silva,Lucas de Carvalho Ramos.
Most studies conducted to test the allelopathic activity of plant parts have made use of water as solvent. However, the presence of polar, water-soluble substances, such as proteins and carbohydrates, tends to hamper the purification of active compounds. In this study, we present a simple purification procedure that separates the active fraction of the extract from the undesirable substances, thus facilitating the search for active molecules through standard chromatographic methods. Aqueous leaf extracts of three Cerrado species (Caryocar brasiliense, Qualea parviflora and Eugenia dysenterica) were prepared at 5% concentration (w/v) and stored at 4ºC (crude extracts). After 24 h, these solutions were filtered and freeze-dried. The powder obtained was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allelopathy; Cerrado; Freeze-drying; Leaf extract; Purification.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100007

Reproductive phenological pattern of Calotropis procera (Apocynaceae), an invasive species in Brazil: annual in native areas; continuous in invaded areas of caatinga
Provedor de dados: 39
Autores: Sobrinho,Mellissa Sousa; Tabatinga,George Machado; Machado,Isabel Cristina; Lopes,Ariadna Valentina.
In this study, we evaluated the phenological patterns (vegetative and reproductive) of Calotropis procera (Apocynaceae-Asclepiadoideae) in Brazil, comparing its phenology in an area where it is invasive with that observed in areas to which it is native. Phenological observations were carried out over a 24-month period at sites in and around areas of caatinga (shrublands). We estimated the relative frequency of each phenophase, and we documented a dramatic difference between phenophases in terms of the pattern of reproductive phenology . The pattern of continuous flowering and fruiting observed in the invaded area strongly diverges from the 2- to 6-month flowering and fruiting period of the annual pattern. The continuous pattern of reproduction seems to...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Asclepiadoideae; Flowering; Fruiting; Life history; Phenological plasticity.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000200018

Pericarp ontogenesis with emphasis on the dispersal apparatus of three weed species of Faboideae (Fabaceae)
Provedor de dados: 39
Autores: Trzeciak-Limeira,Flavia; Pinto,Daniela Dias; Mourão,Káthia Socorro Mathias.
It is known that the efficient dispersal is one among other features that amplify the invasion potential of a plant. Knowledge of the ontogeny, morphology and fruit dispersal of species is indispensable for weed control in crops. To identify the pericarp structures involved in the fragmentation and dehiscence processes and other features related to dispersal, we studied the pericarp development of Aeschynomene evenia Wright, Desmodium incanum (Sw.) DC. and Vigna luteola (Jacq.) Benth. (Fabaceae-Faboideae), all of which are considered weeds in certain situations. For light and scanning electron microscopy studies, we fixed and processed buds, flowers and fruits, according to usual methods, at different stages of development. We observed that the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dehiscence; Fragmentation; Legume; Leguminosae; Loment.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000400011

Salt stress: antioxidant activity as a physiological adaptation of onion cultivars
Provedor de dados: 39
Autores: Corrêa,Natália Silveira; Bandeira,Juliana de Magalhães; Marini,Patrícia; Borba,Isabel Cristina Gouvea de; Lopes,Nei Fernandes; Moraes,Dario Munt de.
The germination and development of several plant species can be limited when those plants are grown in soils with high salinity, which reduces seedling viability and vigor, as well as activating the antioxidant defense system. The aim of this study was to evaluate germination, initial growth and activity of antioxidant enzymes (superoxide dismutase, catalase and ascorbate peroxidase) in seedlings of three onion cultivars (Madrugada, Fepagro 27 and Petroline) exposed to different concentrations of NaCl (0, 40, 80, 120 and 160 mM). Seedlings were evaluated for viability, vigor and antioxidant enzyme activity. The experimental procedures were completely randomized in 3 × 5 factorial design, with each treatment performed in triplicate, at a significance level...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allium cepa; Growing; Oxidative stress; Germination; NaCl.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000200013

Acanthothecis sarcographoides (Ascomycota: Graphidaceae), a morphologically unique, new lichen species in the Atlantic Forest of northeastern Brazil
Provedor de dados: 39
Autores: Cáceres,Marcela Eugenia da Silva; Lücking,Robert.
A new species of Acanthothecis is described in the Atlantic Forest of northeastern Brazil. Unlike any other species in the genus, it has distinctly pseudo-stromatic ascomata that resemble those of the genus Sarcographa. However, its apically spinulose paraphyses, I-negative ascospores with thin endospore closely resemble those of other Acanthothecis species. A previous molecular phylogenetic analysis places the new species close to the type species of Acanthothecis, A. hololeucoides. The discovery of this unique new species underscores the importance of thorough biotic surveys in the Atlantic Forest of Brazil, where it is likely that many more unknown lichen species await discovery.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mata do Crasto; Santa Luzia do Itanhy; Sergipe.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000300002

Self-sterility in the hexaploid Handroanthus serratifolius (Bignoniaceae), the national flower of Brazil
Provedor de dados: 39
Autores: Alves,Mariana Ferreira; Duarte,Mariana Oliveira; Oliveira,Paulo Eugênio; Sampaio,Diana Salles.
Polyploidization is common among angiosperms and might induce typically allogamous plants to become autogamous (self-compatible, relying on sexual self-fertilization) or apomictic (achieving asexual reproduction through seeds). This work aimed to determine whether neopolyploidy leads to the breakdown of the self-incompatibility system in the hexaploid non-apomictic species Handroanthus serratifolius (Vahl) S. Grose, through analyses of its floral biology, pollination biology and breeding system. Although anthesis lasted for three days, increasing the overall floral display, receptivity decreased as of the second day. Centridini and Euglossini bees were the main pollinators, and low nectar availability (1.95 ± 1.91 µl/flower) might have obliged them to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Apomixis; Late-acting self-incompatibility; Monoembryony; Polyploidy; Tabebuia serratifolia.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000400010

Phytotoxic activity of crude aqueous extracts and fractions of young leaves of Sapindus saponaria L. (Sapindaceae)
Provedor de dados: 39
Autores: Grisi,Patrícia Umeda; Gualtieri,Sônia Cristina Juliano; Ranal,Marli Aparecida; Santana,Denise Garcia de.
The aim of this study was to evaluate the phytotoxic potential of aqueous extract of young leaves of Sapindus saponaria L. (soapberry) on the diaspore germination and seedling growth Lactuca sativa L. (lettuce) and Allium cepa L. (onion), as well as to determine, by bioassay-guided fractioning, whether the fractionated extracts of those leaves are phytotoxic to Triticum aestivum L. (wheat) coleoptiles. The aqueous extract was prepared using 100 g of dried plant material dissolved in 1000 ml of distilled water, resulting in a concentration of 10.0%. Distilled water was added in order to obtain dilutions of 7.5%, 5.0%, and 2.5%. The extraction was carried out with young leaves (in powder form) and organic solvents of various polarities. We fractioned the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allium cepa L.; Lactuca sativa L.; Phytotoxicity; Soapberry; Triticum aestivum L.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100009

Phytoplankton diversity in the middle Rio Doce lake system of southeastern Brazil
Provedor de dados: 39
Autores: Barros,Cristiane Freitas de Azevedo; Santos,Aline Morena Menezes dos; Barbosa,Francisco Antônio Rodrigues.
This study presents results of the inventory of algal flora conducted between August 2007 and May 2008 in 18 lakes of the middle Rio Doce lake system, most of which is in the state of Minas Gerais, Brazil. We recorded 481 taxa, increasing the known total phytoplankton diversity of the region (gamma diversity) by 80%. The following classes were represented: Zygnematophyceae (171 taxa), Cyanobacteria (101), Chlorophyceae (71), Bacillariophyceae (42), Euglenophyceae (43), Trebouxiophyceae (24), Dinophyceae (8), Xanthophyceae (8), Chrysophyceae (6), Cryptophyceae (6) and Oedogoniophyceae (1). We identified 221 taxa that were rare (restricted to one or two lakes), and 101 that were considered representative (present in at least nine lakes). Botryococcus...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Algal flora; Inventory; Tropical lakes.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000200009

Fluctuating asymmetry of and herbivory on Poincianella pyramidalis (Tul.) L.P. Queiroz (Fabaceae) in pasture and secondary tropical dry forest
Provedor de dados: 39
Autores: Ribeiro,Viviane Andrade; Silva,Rosineide Nascimento da; Sousa-Souto,Leandro; Neves,Frederico de Siqueira.
Plants subjected to stressful environments tend to be more asymmetric with reduced defenses and are therefore more vulnerable to herbivory. This study investigates the relationship between herbivory and fluctuating asymmetry (FA) in Poincianella pyramidalis in two contrasting habitat types in the Brazilian caatinga (shrublands). We tested the following hypotheses: that FA occurs in P. pyramidalis; that FA of P. pyramidalis leaves is greater in individuals located in pasture than in those located in secondary tropical dry forest; that herbivory by insects (leaf chewers and leaf miners) increases in parallel with increases in the level of FA; and that herbivory is more common in pasture than in secondary tropical dry forest. In each of the two environments,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Caatinga; Forest regeneration; Leaf miners; Plant-insect interactions; Tropical dry forests.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100003

Massive post-fire flowering events in a tropical mountain region of Brazil: high episodic supply of floral resources
Provedor de dados: 39
Autores: Conceição,Abel Augusto; Alencar,Thiago Gondim; Souza,Jumara Marques; Moura,Alan Daniel Cerqueira; Silva,Gabriela Almeida.
The species Vellozia sincorana L.B.Sm. &amp;amp; Ayensu is key to biodiversity conservation in the tropical mountain region of Brazil. The massive post-fire flowering of this endemic species provides a large, episodic supply of floral resources, mostly nectar, to animals.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodiversity conservation; Chapada Diamantina; Nectar; Rocky grasslands; Vellozia sincorana.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000400025

Floristic overview of the epiphytic bryophytes of terra firme forests across the Amazon basin
Provedor de dados: 39
Autores: Oliveira,Sylvia Mota de; ter Steege,Hans.
Epiphytic bryophyte communities in terra firme forests of the Amazon region were investigated for the first time through standardized sampling across the Amazon basin. The sampling was carried out at nine localities, where bryophytes were collected in five height zones, from the forest floor to the canopy of eight canopy trees per locality. The sampling generated 3104 records, identifying 222 species and 39 morphospecies, within 29 families. The most common families were Lejeuneaceae (in 55%), Calymperaceae (in 8%), Leucobryaceae (in 4%) and Sematophyllaceae (in 4%). Richness and species composition did not show any geographical gradient. The bryoflora was significantly richer in the localities of Saül, in French Guiana, and Tiputini, in Ecuador, than in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Epiphyte; Diversity; Liverworts; Mosses; Rain forest; Vertical gradient.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000200010

Comparative pollination role of stamens and breeding system in three species of Commelina (Commelinaceae) in Ile-Ife, Nigeria
Provedor de dados: 39
Autores: Oziegbe,Matthew; Akinlua,Isaiah Opeyemi; Olalekan,Adebiyi Abdul-hakeem.
This study investigated pollination mechanisms and breeding systems in five Commelina variants: two subspecies of Commelina diffusa (C. diffusa subsp. aquatica and C. diffusa subsp. montana, each having two staminodes); two variants of C. erecta (with three staminodes); and C. lagosensis (also with three staminodes). In all three species, the staminodes have six lobes but only two fertile lateral lobes. We collected field samples and cultivated new plants from stem cuttings. When the plants flowered, we evaluated floral morphology, floral biology and breeding systems, creating eight separate experimental treatments, involving spontaneous and hand pollination, as well as varying degrees of emasculation of the flowers. Although the pollen from the lateral...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Commelina; Pollen viability; Stamen type; Autogamy.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000300012

The genus Thelypteris (Thelypteridaceae, Polypodiopsida) in the state of Mato Grosso, Brazil - II - subgenera Amauropelta (Kunze) A.R. Sm., Cyclosorus (Link) C.V. Morton and Steiropteris (C. Chr.) K. Iwats
Provedor de dados: 39
Autores: Ponce,Mónica; Kieling-Rubio,Maria Angélica; Windisch,Paulo Günter.
The family Thelypteridaceae presents considerable species richness throughout the hillside forests and coastal plains of Brazil, as well as in the forests of its southern plateau. This study was based on material collected in 24 trips to various regions within the state of Mato Grosso, as well as material deposited in the principal Brazilian herbaria and in other herbaria. The genus Thelypteris, represented in this study by the subgenera Amauropelta (Kunze) A.R. Sm., Cyclosorus (Link) Morton and Steiropteris (C. Chr.) K. Iwats., comprises 11 species in Mato Grosso and surrounding regions. Keys for identification, descriptions and references to illustrations of diagnostic characters are presented.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Central-west Brazil; Diversity; Ferns; Taxonomy.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000300017

Structure and phytogeographic relationships of swamp forests of Southeast Brazil
Provedor de dados: 39
Autores: Kurtz,Bruno Coutinho; Gomes,Jorge Caruzo; Scarano,Fabio Rubio.
Swamp forests are associated with soils that are saturated or inundated because of a high water table. In Brazil, little is known about the plant ecology of such forests. In this paper, we aimed to describe the phytosociological structure of the tree layer of swamp forests in Restinga de Jurubatiba National Park, in the northern part of the state of Rio de Janeiro, and to evaluate the floristic similarities between these forests and some other possibly related types of vegetation formations in Brazil. The sampling included 84 species, within 62 genera and 34 families. The Shannon diversity index was 3.42, and the Shannon evenness index was 0.77. The forests studied showed an oligarchic structure; Tapirira guianensis, Calophyllum brasiliense and Protium...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic Forest biome; Jaccard similarity coefficient; Phytogeography; Phytosociology; Coastal sand plain.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000400002

Bangiopsis subsimplex (Mont.) F. Schmitz (Stylonematales, Rhodophyta) on the northeastern coast of Brazil
Provedor de dados: 39
Autores: Almeida,Wellington Romualdo de; Guimarães,Silvia Maria Pita de Beauclair; Moura,Carlos Wallace do Nascimento.
We report here the first occurrence of Bangiopsis subsimplex (Mont.) F.Schmitz (Rhodophyta) for the northeastern coast of Brazil. The specimen was isolated from a laboratory sample of mollusk shells collected in Baía de Todos os Santos (Bimbarras Island, Brazil) and was held in sterilized seawater (33 UPS) enriched with 25% Provasoli solution. In the American Atlantic region, B. subsimplex presents a northern distribution limit at French Guiana and a southern limit at São Paulo. We conclude that the distribution of B. subsimplex has expanded, since the species was once known only to the southeastern Brazil, specifically to São Paulo.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Marine algae; Bahia; Baía de Todos os Santos; Stylonemaceae; Taxonomy.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100022

Phytotoxic and antioxidant activity of seven native fruits of Brazil
Provedor de dados: 39
Autores: Peres,Marize Terezinha Lopes Pereira; Lopes,José Rodrigo Regis; Silva,Cristiane Bezerra da; Cândido,Ana Carina Silva; Simionatto,Euclésio; Cabral,Márcia Regina Pereira; Oliveira,Rita Machado; Facco,Janaina Thomasi; Cardoso,Cláudia Andréa Lima; Simas,Pedro Henrique.
We investigated antioxidant capacity, phenolic content and phytotoxic effects in seven species of fruit native to Brazil: Acrocomia aculeata, Hymenaea stigonocarpa, Tamarindus indica, Byrsonima intermedia, Psidium firmum, Myrciaria cauliflora and Ficus obtusifolia. Phytotoxic effects were assessed from crude ethanol extracts and semipurified fractions. In four of the seven fruits, total phenolic content, as determined by Folin-Ciocalteu assay, was higher in the peel than in the pulp. We found that total phenolic content correlated significantly with antioxidant capacity. High-performance liquid chromatography with diode array detection revealed the presence of the flavonoids quercetin and rutin in some fruits. We also evaluated the allelopathic effects of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brazil; Fruit; Phytotoxic effects; Antioxidant capacity; Total phenolic content.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000400024

Diversity and distribution of the bryophyte flora in montane forests in the Chapada Diamantina region of Brazil
Provedor de dados: 39
Autores: Valente,Emilia de Brito; Pôrto,Kátia Cavalcanti; Bastos,Cid José Passos; Ballejos-Loyola,Jana.
Bryophytes constitute an important component of tropical rain forests, which provide microhabitats favorable for their establishment. Bryophytes are also quite responsive to changes in microclimate, which makes them good bioindicators. This study aimed to determine the diversity and distribution of bryophytes in upper and lower montane forests of the Chapada Diamantina region of the state of Bahia, Brazil. To that end, we studied community aspects such as richness, diversity, substrates colonized, life forms and floristic similarity between areas and regions. In 2007 and 2008, we collected specimens from six forest sites, located from the north to the south of the Chapada Diamantina region. We identified a total of 205 infrageneric taxa. In comparison with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mosses; Liverworts; Community ecology; Elevational gradient.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000300008

First record of the genus Everniastrum Sipman (Parmeliaceae, lichenized Ascomycota) for the state of Paraná, Brazil
Provedor de dados: 39
Autores: Gerlach,Alice da Cruz Lima; Gumboski,Emerson Luiz; Eliasaro,Sionara.
Everniastrum is a pantropical genus that has been recorded for the Brazilian states of Minas Gerais, Rio de Janeiro, São Paulo and Rio Grande do Sul. In this work, we present the first records of E. cirrhatum and E. vexans for the Brazilian state of Paraná. Comments and illustrations are provided.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lichenized Ascomycota; Lichens; Mycota; Upper montane rain forest.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000400026

Morphology of seeds and seedlings of four species of Vigna Savi (Leguminosae, Phaseolinae)
Provedor de dados: 39
Autores: Ojeda,Fabiana Soledad; Hoc,Patricia Susana; Amela García,María Teresa.
Four neotropical species of Vigna Savi (Leguminosae, Phaseolinae) have potential value as forage crops or ornamentals and could be cultivated in tropical or subtropical areas, even on floodplains. In order to obtain useful data for their culture and taxonomy, the seed morphology, germination pattern (hypogeal or epigeal) and seedling development were studied. The studied species belong to different sections of the genus: V. adenantha (G.F.W. Meyer) Maréchal, Mascherpa &amp;amp; Stainier (Sect. Leptospron); V. candida (Vell.) Maréchal, Mascherpa &amp;amp; Stainier (Sect. Sigmoidotropis); V. caracalla (L.) Verdc. (Sect. Caracallae) and V. luteola (Jacq.) Benth. (Sect. Vigna). The seeds were collected during fieldwork conducted in northwestern and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vigna; Seed morphology; Germination; Seedlings; Argentina.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000300004

Species richness of the genera Trachelomonas and Strombomonas (pigmented Euglenophyceae) in a subtropical urban lake in the Porto Alegre Botanical Garden, RS, Brazil
Provedor de dados: 39
Autores: Alves-da-Silva,Sandra Maria; Cabreira,Josemari da Cruz; Voos,José Guilherme; Lobo,Eduardo Alcayaga.
The objective of this study was to evaluate the taxonomic composition and richness of the genera Trachelomonas and Strombomonas (pigmented Euglenophyceae) in a subtropical urban lake (30º03'05"S; 51º10'34"W) within the Botanical Garden, in the city of Porto Alegre, located in the state of Rio Grande do Sul, Brazil, in order to contribute to the floristic knowledge of Euglenophyta in artificial urban lakes. From July 2007 to June 2008, we collected samples monthly from two sampling stations, using a 25-µm mesh plankton net. The samples were preserved in 4% formaldehyde. We evaluated the following environmental variables related to the water in the lake: ammonia content, silica content, organic matter content, dissolved oxygen concentration, temperature, pH,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Euglenophyta; Environmental gradient; Shallow lake; Species richness; Southern Brazil.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000300010

Litterfall dynamics in a iron-rich rock outcrop complex in the southeastern portion of the Iron Quadrangle of Brazil
Provedor de dados: 39
Autores: Valim,Eduardo André Ribeiro; Nalini Jr,Hermínio Arias; Kozovits,Alessandra Rodrigues.
Ecosystems on cangas (duricrust) present considerable heterogeneity of habitats due to microtopographic variations, soil accumulation and a variety of plant functional groups. Therefore, spatial and temporal ecosystem processes such as litterfall are to be expected to be large, and the absence of a level of productivity represents all the facets of iron-rich landscapes. We investigated litterfall in a iron-rich rock complex in the Iron Quadrangle of Brazil, with habitats formed on different evolutionary stages of the soil, resulting in a gradient of biomass, canopy cover and community structure. The measurements were made in open field areas, dominated by herb-shrub vegetation and interspersed with islands of dense vegetation in which there were individual...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Canga; Iron duricrust; Ferruginous fields; Litter production; Ecosystem productivity.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000200005

Biostimulation of inoculation with Glomus proliferum and application of humic acid in the in vitro growth of Lunularia cruciata
Provedor de dados: 39
Autores: Nobre,Camila Pinheiro; Huertas,Orlando Carlos Tavares; Tardin,José Rogério Figueira; Saggin Júnior,Orivaldo José; Fonseca,Henrique Manoel Apolónia Coutinho; Berbara,Ricardo Luis Louro.
In this study, we evaluated the growth of the liverwort Lunularia cruciata, inoculated or not with the arbuscular mycorrhizal fungi (AMF) Glomus proliferum (15 spores per Petri dish), in Strullu-Romand Variant (SRV) medium modified and enriched with humic acid (HA) at different concentrations (0, 20, 40 and 80 mg C L−1), as well as the sporulation of the AMF. We assessed the absolute growth rate (AGR) and relative growth rate (RGR) at inoculation, as well as at 7, 14, 21, 28, 43, 52 and 60 days after inoculation (DAI), whereas we assessed sporulation at 25, 43, 60 and 70 DAI. The main determinant of L. cruciata growth was the presence of AMF. With and without G. proliferum inoculation, respectively, the AGR peaked at 39 and 42 DAI, and the RGR was 0.0474...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arbuscular mycorrhizal fungi; Liverworts; Monoxenic cultures; Humic substances.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000400017

Floristic diversity of the soil weed seed bank in a rice-growing area of Brazil: in situ and ex situ evaluation
Provedor de dados: 39
Autores: Mesquita,Mário Luiz Ribeiro; Andrade,Leonaldo Alves de; Pereira,Walter Esfrain.
The objective of this study was to compare the ex situ and in situ floristic diversity of the soil weed seed bank of a rice field in northeastern Brazil. In a rice field in the county of Bacabal, located in the state of Maranhão, thirty 25-m² plots were laid out. From 15 plots, soil samples (6/plot; n = 90) were taken with a soil probe (25 × 16 × 3 cm) and placed in aluminum trays in the greenhouse. From the remaining 15 plots, weed samples (6/plot; n = 90) were taken with the same soil probe. The number of seeds was estimated by germination. We evaluated the numbers of species and individuals, as well as the density, frequency, abundance and importance value (IV) for each species. Diversity was computed by the Shannon index (H'). We recorded 13,892...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cyperaceae; Competition; Biological invasion; Phytosociology; Smallholder farmers.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000300001

New records of Cosmarium Corda ex Ralfs (Desmidiaceae, Zygnematophyceae) in a tributary of the Itaipu Reservoir, Paraná, Brazil
Provedor de dados: 39
Autores: Biolo,Stefania; Bueno,Norma Catarina; Siqueira,Natália Silveira; Moresco,Carina.
This work is part of a survey of the desmid flora in a tributary of the Itaipu Reservoir, in the state of Paraná, Brazil. The objective was to expand the knowledge base regarding the genus Cosmarium (Desmidiaceae, Zygnematophyceae). We conducted a qualitative analysis of 60 samples of phytoplankton, which were collected from along the banks of the São Francisco Falso River between July of 2003 and June of 2004. We identified, drew, and described 18 taxa of Cosmarium. Of those 18 taxa, 8 represent new records for the state of Paraná: C. angulosum Bréb. var. angulosum, C. bireme Nordst. var. bireme, C. clepsydra Nordst. var. clepsydra, C. cf. galeritum Nordst. var. borgei, C. ginzbergeri, C. norimbergense Reinsch var. norimbergense, C. protractum (Nägeli) De...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Algae; Desmids; Phytoplankton; Taxonomy.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100001

Effects that nutritional and saline gradients have on the growth of Passiflora mucronata Lam. and Canavalia rosea (Sw.) DC. found in the restinga of Brazil
Provedor de dados: 39
Autores: Lourenço Junior,Jehová; Zambom,Oberdan; Rossi,Magda Santos; Cuzzuol,Geraldo Rogério Faustini.
Salinity and fertility are the main factors cited in Within the restinga (coastal woodland) biome in Brazil, the positioning of Canavalia rosea and Passiflora mucronata occur, respectively, near the shore-in the creeping psammophyte formation (CPF) - and far from the shore - in the Palmae formation (PF). The hypothesis that such positioning is related to salinity and fertility was tested by applying a salt gradient (increasing solutions of NaCl) and a nutritional gradient (different proportions of Hoagland solution). Neither species survived in solutions over 200 mM of NaCl. The shoots of P. mucronata showed negative growth (lower dry mass) in the first week of exposure to saline solutions. The roots of C. rosea showed great sensitivity to salinity, which...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coastal ecosystems; Fabaceae; Fertility; Nutrition; Passifloraceae; Salinity; Spatial distribution.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000200008

Hippeastrum species in areas of restinga in the state of Rio de Janeiro, Brazil: pollen characters
Provedor de dados: 39
Autores: Candido,Renata Suzano; Fourny,Ana Carolina da Silva; Gonçalves-Esteves,Vania; Lopes,Rosana Conrado.
The order Asparagales comprises 14 families, five of which occur in Brazil. Amaryllidaceae is a family of economic relevance and includes numerous ornamental genera. The genus Hippeastrum is widely distributed in Brazil and comprises 34 species, 11 of which occur in areas of restinga (coastal woodland) and Atlantic Forest in the state of Rio de Janeiro. The morphology of Hippeastrum has not been extensively studied in Brazil, where only a few systematic floristic surveys have been carried out with native species. In field studies and reviews of herbarium collections, we identified five Hippeastrum species occurring in areas of restinga in the state of Rio de Janeiro. The five species identified could be distinguished according to the following...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amaryllidaceae; Asparagales; Conservation; Pollen.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000400003

Arbuscular mycorrhizal fungi in a semi-arid, limestone mining-impacted area of Brazil
Provedor de dados: 39
Autores: Teixeira-Rios,Thaís; Souza,Renata Gomes de; Maia,Leonor Costa; Oehl,Fritz; Lima,Cláudia Elizabete Pereira.
The main goal of this study was to determine the diversity and activity of arbuscular mycorrhizal fungi (AMF) in an area degraded by limestone mining within the semi-arid region of Brazil known as the caatinga (shrublands). Near a limestone quarry, we selected two areas of caatinga (preserved and degraded) for study. The number of glomerospores did not differ significantly between the two areas. There was a trend toward the most probable number of infective propagules being higher in the degraded area. Twenty AMF taxa were identified in the two sampled areas, species richness, diversity and evenness being higher in the preserved area. Two species of Racocetra represent new records for the semi-arid region of Brazil. Glomerospore production and AMF species...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Caatinga; Glomerospores; Infective propagules; Mining activities; Mycorrhiza.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000400006

The role of historical and ecological factors on initial survival of Copaifera langsdorffii Desf. (Fabaceae)
Provedor de dados: 39
Autores: Fagundes,Marcílio; Costa,Fernanda Vieira da; Antunes,Suélen Ferreira; Maia,Maria Luiza Bicalho; Queiroz,Antônio César Medeiros de; Oliveira,Leonardo Queiroz; Faria,Maurício Lopes de.
The plant population dynamic is affected by ecological and evolutionary processes that operate at all stages of the plant life cycle. The aim of this study was to characterize the seed and seedling performance of Copaifera langsdorffii by testing four hypotheses: the resource concentration hypothesis; the relationship between seed size and germinability hypothesis; the relationship between seed size and seedling vigor hypothesis; and the intraspecific seedling competition hypothesis. All seeds used in the experiments were collected from 35 C. langsdorffii plants located in a fragment of the Brazilian cerrado (savanna). The number of fruits per plant negatively affected Rhinochenus brevicollis attacks on C. langsdorffii seeds. Therefore, this result does...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plant competition; Predation; Rhinochenus brevicollis; Seed size; Seedling development.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000400005

Analysis of floristic composition and structure as an aid to monitoring protected areas of dense rain forest in southeastern Brazil
Provedor de dados: 39
Autores: Cardoso-Leite,Eliana; Podadera,Diego Sotto; Peres,Juliana Cristina; Castello,Ana Carolina Devides.
To study forest composition and structure, as well as to facilitate management plans and monitoring programs, we conducted a phytosociological survey in the PE Caverna do Diabo State Park and the Quilombos do Médio Ribeira Environmentally Protected Area, both located within the state of São Paulo, Brazil. We analyzed 20 plots of 400 m² each, including only individuals with a circumference at breast height &gt; 15 cm. We employed cluster analysis and ordination (principal component analysis and correspondence analysis), including species data and abiotic data. We evaluated 1051 individuals, belonging to 155 species in 48 families. Of those 155, 18 were threatened species, 33 were endemic species, and 92 (59.4%) were secondary species. The overall Shannon...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodiversity; Intermediate disturbance; Atlantic Forest; Forest monitoring.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100018

Parmotrema hydrium, a new species of Parmeliaceae in southeastern Brazil
Provedor de dados: 39
Autores: Benatti,Michel Navarro; Gernert,Maria; Schmitt,Imke.
Parmotrema hydrium is a new lichen species discovered during a survey of Parmeliaceae in the Cantareira mountain range of southeastern Brazil. In its medullary chemistry, the species contains several fatty acids and other substances, including small amounts of atranorin, typically restricted to the soralia and young lobes.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cilia; Parmeliaceae; Parmotrema hababianum; Parmotrema grayanum; Soredia.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000400021

Effects of gut passage on the germination of seeds ingested by didelphid marsupials in a neotropical savanna
Provedor de dados: 39
Autores: Lessa,Leonardo Guimarães; Geise,Lena; Costa,Fabiane Nepomuceno.
We analyzed the effects that passage through the guts of seven didelphid species had on the seed germination of 10 plant species. This study was conducted in an area of riparian woodland in a cerrado (savanna) reserve in southeastern Brazil. We found seeds of 23 angiosperm species in 427 fecal samples obtained from seven didelphid species. The plant families most often represented by the seeds found in the fecal samples were Melastomataceae (5 species) and Rubiaceae (4 species) . Most gut-passed seeds showed no significant difference in germinability when compared with the hand-extracted seeds. Among the ingested seeds, only those of Clidemia urceolata DC. (Melastomataceae) and Myrcia sp. (Myrtaceae) showed an increase in germinability (final proportion of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cerrado; Frugivory; Scarification; Seed dispersal; Zoochory.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000300009

First records of Zygnematales (Zygnematophyceae, Streptophyta) for the state of Bahia, Brazil
Provedor de dados: 39
Autores: Oliveira,Ivania Batista de; Bicudo,Carlos Eduardo de Mattos; Moura,Carlos Wallace do Nascimento.
This study presents the first taxonomic inventory of the order Zygnematales in the Litoral Norte Environmentally Protected Area, in the state of Bahia, Brazil. Fifty samples of planktonic and periphytic material were collected, from lotic and lentic environments, during the summer (January-March) and winter (June-August) of 2009. We identified 18 taxa distributed among five genera (Cylindrocystis, Mougeotia, Netrium, Spirogyra, and Spirotaenia). Of those 18 taxa, eight were new additions to the Brazilian desmid flora: Mougeotia calcarea; Mougeotia elegantula; Spirogyra gracilis; Cylindrocystis crassa var. elliptica; Cylindrocystis brebissonii var. minor; Cylindrocystis brebissonii var. turgida; Netrium digitus var. parvum; and Netrium oblongum var....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brazil; Continental microalgae; Desmids; Streptophyta; Taxonomy.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000400014

Phytotoxicity of organic extracts of Turnera ulmifolia L. and Turnera diffusa Willd. ex Schult. in cucumber seeds
Provedor de dados: 39
Autores: Silvestre,Daniel Moreto; Kolb,Rosana Marta; Frei,Fernando; Santos,Catarina dos.
We evaluated the phytotoxic effects that the hexane, ethyl acetate and methanol extracts from leaves and branches of the species Turnera ulmifolia L. and Turnera diffusa Willd. ex Schult. (Turneraceae), at concentrations of 1.25, 2.50, 3.75 and 5.00 mg ml-1, have on seed germination and seedling development in cucumber (Cucumis sativus L.). None of the extracts tested prevented germination, although the ethyl acetate extracts of T. diffusa, at 3.75 and 5.00 mg ml-1, reduced the mean germination speed and time to germination. Hexane extracts of both species reduced the main root length, number of secondary roots and hypocotyl length. In the ethyl acetate and methanol extracts, the number of secondary roots and hypocotyl length varied by species and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allelopathy; Cucumis sativus; Germination; Development.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000300003

Ontogeny, allometry and architecture of Psychotria tenuinervis (Rubiaceae)
Provedor de dados: 39
Autores: Rosseto,Vanessa; Carneiro,Magda Silva; Ramos,Flavio Nunes; Santos,Flavio Antonio Maës dos.
We evaluated the ontogeny of the understory shrub Psychotria tenuinervis Müll.Arg., considering morphological and morphometric characters. Four ontogenetic stages were identified: seedling, juvenile, immature and adult (vegetative and reproductive phases). Size measurements and allometric relationships of the stem and crown were compared between the immature and adult stages. Diameter and total height of the stem, as well as crown depth and width, increased throughout the ontogenetic stages and differed among immature, vegetative adult and reproductive adult individuals. The number of branches was lower in immature individuals than in vegetative and reproductive adult individuals but did not differ between the last two. The bifurcation ratio did not vary...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allometry; Architecture; Branching pattern; Ontogenetic stages; Understory.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000400012

Morphology and development of leaf papillae in the Pilotrichaceae
Provedor de dados: 39
Autores: Duarte-Silva,Ana Gabriela; Carvalho-Silva,Micheline; Câmara,Paulo Eduardo Aguiar Saraiva.
Sporophyte morphology has been traditionally used in taxonomic studies of pleurocarpous mosses. However, the gametophyte morphology of the Pilotrichaceae still holds interesting and under-investigated characters. Here, we conducted an in-depth investigation of the morphology and development of Pilotrichaceae leaf papillae and assessed their usefulness in inferring the evolutionary history of the family. Specimens were observed under scanning electron microscopy, and we identified seven morphological types of papillae, as well as two different pathways of development. Our results suggest that papilla morphology and development are phylogenetically informative in the Pilotrichaceae.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gametophyte; Hookeriales; Pleurocarpous moss; Outgrowths; Scanning electron microscopy.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000400013

Taxonomic studies of centric diatoms (Diatomeae): unusual nanoplanktonic forms and new records for Brazil
Provedor de dados: 39
Autores: Cavalcante,Kaoli Pereira; Tremarin,Priscila Izabel; Ludwig,Thelma Alvim Veiga.
There have been few taxonomic studies of centric diatoms in lotic freshwater environments in Brazil, especially in terms of those including nanoplanktonic forms, which are often neglected in studies of local floras, because of their small size or confusing taxonomy. This is the first study focusing on centric diatoms in the flora of the state of Bahia, in northeastern Brazil. Plankton and periphyton attached to Eichornia crassipes were collected in the winter of 2009 in the Cachoeira River. The diatoms were analyzed and described under light and electron microscopies. Seventeen infrageneric taxa were identified. Cyclotella was represented by five taxa, and concerning of similarities between diacritical features of species in this genus, their descriptions...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bahia; Coscinodiscophyceae; Freshwater; Mediophyceae; River.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000200001

Development of conceptacles in Amphiroa (Corallinales, Rhodophyta)
Provedor de dados: 39
Autores: Rosas-Alquicira,Edgar Francisco; Riosmena-Rodríguez,Rafael; Hernández-Carmona,Gustavo; Neto,Ana Isabel.
Here, we describe the development of sporangial and gametangial conceptacles for Amphiroa beauvoisii and A. vanbosseae; sporangial conceptacles only for A. misakiensis; and gametangial conceptacles only for A. cryptarthrodia and A. rigida. The descriptions are based on the observation of histological preparations obtained from 112 specimens collected from the Gulf of California, in Mexico, and the Azores archipelago of Portugal. Information on the development of the sporangial conceptacle pore and conceptacle senescence is here described and illustrated for the first time. Four development patterns were observed: two for sporangial conceptacles; one for spermatangial conceptacles; and one for carposporangial conceptacles. The phases of development of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carposporangial filament origin; Sporangium location; Sporangial pore canal anatomy; Senescence; Taxonomy.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000400008

Ethnobotanical, micrographic and pharmacological features of plant-based weight-loss products sold in naturist stores in Mexico City: the need for better quality control
Provedor de dados: 39
Autores: Arenas,Patricia Marta; Molares,Soledad; Aguilar Contreras,Abigail; Doumecq,Belén; Gabrielli,Florencia.
The consumption of dietary supplements and herbal mixtures to promote weight loss is a common practice in the West. This study was undertaken in Mexico City, surveying stores selling "natural products" at subway stations. The aims of this paper were as follows: to compile a record of plant products marketed as slimming aids and of retailer perceptions of these products; to review the pharmacological and ethnobotanical literature on the species declared; and to create an optical micrograph of a subset of products to verify the accuracy of the list of component plant species shown on the labels. We applied the techniques of observation, semi-structured interviews and free-listing at the retail stores. Results are presented for the 75 species recorded in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Urban ethnobotany; Dietary supplements; Obesity.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000300014

The systematic value of pollen morphology in trees and shrubs species of Bauhinia L. (Caesalpinioideae- subg. Bauhinia - sect. Pauletia) occurring in Brazil
Provedor de dados: 39
Autores: Moreira,Fábio de França; Vaz,Ângela Maria Studart da Fonseca; Mendonça,Claudia Barbieri Ferreira; Gonçalves-Esteves,Vania.
We analyzed the pollen grains of 30 taxa of the genus Bauhinia L., within five series: Aculeatae (9 species); Acuminatae (1 species); Cansenia (17 species); Pentandrae (2 species); and Perlebia (1 species). The pollen grains were acetolysed, after which they were photographed and analyzed under light microscopy. Non-acetolysed pollen grains were analyzed under scanning electronic microscopy. Characters such as shape, size, exine and aperture constitution were studied. The species were separated by a dichotomous key, which showed pollen grains that were classified as very large; isopolar or apolar; oblate, suboblate, oblate spheroidal or spherical; large or small in terms of the polar area; inaperturate, 3-porate or (3-7)-colpate; and microreticulate or...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bauhinia; Brazil; Leguminosae; Palynology.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000200014

Host plants of insect-induced galls in areas of cerrado in the state of Goiás, Brazil
Provedor de dados: 39
Autores: Araújo,Walter Santos de; Silva,Isadora Portes Abraham; Santos,Benedito Baptista dos; Gomes-Klein,Vera Lúcia.
Most studies of the interactions between plants and gall-inducing (galling) insects have focused on the entomological aspects, few having addressed the diversity of galls in relation to the characteristics of the host plants. The objective of this study was to analyze the richness and composition of the community of host plants of galls in areas of cerrado (savanna) in the state of Goiás, Brazil. To that end, we inventoried the galls in different regions of the state and within various types of vegetation formations, between 2005 and 2007. We registered 80 gall morphotypes in 58 species of host plants (30 families and 47 genera). The host family with highest diversity of galls was Fabaceae, with 17 morphotypes, followed by Styracaceae, with seven. In the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Botanical families; Floristic composition; Galling insects; Superhosts.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000300011

Influence of edaphic factors on the floristic composition of an area of cerradão in the Brazilian central-west
Provedor de dados: 39
Autores: Bueno,Marcelo Leandro; Neves,Danilo Rafael Mesquita; Souza,Anderson Fernandes; Oliveira Junior,Elio; Damasceno Junior,Geraldo Alves; Pontara,Vanessa; Laura,Valdemir Antônio; Ratter,James Alexander.
This study describes the influence of edaphic factors on the floristic composition of an area of cerradão (woodland savanna) in the city of Campo Grande, located in the Brazilian central-west. In 10 plots (5 × 20 m each), we evaluated all trees with a diameter at breast height &gt; 4.77 cm. Soil samples were analyzed for each plot in order to determine edaphic variables correlated with species composition. We sampled 1180 individuals of 61 species. The evenness index was 0.74, which indicates uneven distribution of species, which was explained by a high abundance of Qualea parviflora, Curatella americana, Qualea grandiflora, Terminalia argentea and Astronium fraxinifolium. We registered more trees in the smallest diameter class and in the middle layer of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cerrado; Dystrophic cerradão; Mesotrophic cerradão; Phytosociology; Soil-plant interaction.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000200017

Protoparmelia capitata (Ascomycota: Parmeliaceae): new record for South America
Provedor de dados: 39
Autores: Aptroot,André; Oliveira,Maria Machado de; Cáceres,Marcela Eugenia da Silva.
The sterile corticolous crustose lichen Protoparmelia capitata (Ascomycota: Parmeliaceae), recently described for southeastern North America, is reported as a new record for South America in the Serra da Jiboia mountain range, near the municipality of Santa Teresinha, in the state of Bahia, in northeastern Brazil. This species is locally common and is probably closely related to P. isidiata, which has the same pigmentation and medullary chemistry, P. capitata differing from P. isidiata in that the former features soredia rather than isidia.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alectoronic acid; Sorediate species; New record; Serra da Jiboia; Santa Teresinha; Bahia; Northeastern Brazil; Caatinga; Atlantic Forest.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000300006

Seed vigor, antioxidant metabolism and initial growth characteristics of red rice seedlings under different light intensities
Provedor de dados: 39
Autores: Aumonde,Tiago Zanatta; Pedó,Tiago; Borella,Junior; Amarante,Luciano do; Villela,Francisco Amaral.
This work aimed to evaluate the effect that different intensities of light have on the physiological attributes of red rice seeds and seedlings. Before and after emergence, seedlings were exposed to light levels of 35%; 65% and 100% in a greenhouse. We evaluated shoots and roots, in terms of length and dry mass, as well as leaf area and content of chlorophyll (a,b and total). In leaves and roots, we quantified the activity of superoxide dismutase (SOD), ascorbate peroxidase (APX), catalase (CAT) and guaiacol peroxidase (POX). We determined the leaf area ratio (F A), leaf mass ratio (F W), specific leaf area (S A), and shoot/root ratio (P W). At higher light intensities, shoot length decreased, whereas root length, dry mass and number of tillers increased....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oryza sativa L.; Shading; Chlorophyll content; Antioxidant enzymes.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000200007

Do edaphic aspects alter vegetation structures in the Brazilian restinga?
Provedor de dados: 39
Autores: Santos-Filho,Francisco Soares; Almeida Jr,Eduardo Bezerra; Zickel,Carmen Sílvia.
The vegetation of the Brazilian restinga (coastal woodland) presents a variety of species and different characteristics, encompassing fields, fruit groves and forests on quartzarenic neosols. We hypothesised that the structure of the restinga landscape along the coast of the state of Piauí is influenced by edaphic factors and presents a pattern similar to that of other northeastern restingas. We evaluated three restingas in Piauí, using the quarter method to determine their structure. Composite soil samples were collected to determine their chemical and physical properties. Edaphic variables were correlated with plant species by canonical correspondence analysis (CCA). Phytosociological data for all three areas indicated regenerating vegetation comprising...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Canonical correspondence analysis; Coastal vegetation; Edaphic interactions.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000300019

Influence of fire history and soil properties on plant species richness and functional diversity in a neotropical savanna
Provedor de dados: 39
Autores: Silva,Danilo Muniz; Batalha,Marco Antônio; Cianciaruso,Marcus Vinicius.
Differences in plant species richness and composition are associated with soil properties and disturbances such as fire, which can therefore be key determinants of species occurrence in savanna plant communities. We measured species richness, using nine plant functional traits and abundance to calculate three functional diversity indices. We then used model selection analyses to select the best model for predicting functional diversity and richness based on soil variables at sites with three different fire frequencies. We also calculated the community-weighted mean of each trait and used ordination to examine how traits changed across fire frequencies. We found higher species richness and functional dispersion at sites that were more fertile and where fire...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cerrado; Complementarity; Fertility effect; Plant traits; Soil nitrogen.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000300005

Germination and sporophytic development of Regnellidium diphyllum Lindm. (Marsileaceae) in the presence of copper
Provedor de dados: 39
Autores: Cassanego,Mara Betânia Brizola; Goldoni,Angélica; Heldt,Fágner Henrique; Osório,Daniela Montanari Migliavacca; Windisch,Paulo Günter; Droste,Annette.
Regnellidium diphyllum Lindm. is a heterosporous fern growing in wetlands and humid soils that are being converted to agricultural activities. Many products that are used in agriculture contain copper, resulting in surface and groundwater contamination. Germination and initial development tests were performed using Meyer's solution containing copper sulphate at concentrations of 0 (control), 1, 5, 10, 50 and 100 mg L-1. The experiment was conducted in a growth chamber at 25 ± 1ºC for 28 days, with a 12/12-hour light/dark cycle and a photon flux density of 100 µmol m-2 s-1. The lowest germination rate (6%) was observed at 100 mg L-1. Primary root growth was significantly reduced at &gt; 10 mg L-1. Secondary leaves of sporophytes grown in concentrations &gt;...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fern; Heavy metals; Pollution; Reproduction; Species conservation; Wetlands.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100004

Floristic and vegetation structure of a grassland plant community on shallow basalt in southern Brazil
Provedor de dados: 39
Autores: Pinto,Marcelo Fett; Nabinger,Carlos; Boldrini,Ilsi Iob; Ferreira,Pedro Maria de Abreu; Setubal,Robberson Bernal; Trevisan,Rafael; Fedrigo,Jean Kássio; Carassai,Igor Justin.
Few studies have adequately described the floristic and structural features of natural grasslands associated with shallow basalt soils in southern Brazil. This study was carried out on natural grazing land used for livestock production in the municipality of Santana do Livramento, in the Campanha region of the state of Rio Grande do Sul, Brazil. The aim of the study was to describe the floristic and structural diversity of the area. The floristic list obtained comprises 229 plant taxa from 40 botanical families, with a predominance of the families Poaceae (62), Asteraceae (28), Fabaceae (16) and Cyperaceae (12). The estimated diversity and evenness in the community were 3.00 and 0.874, respectively. Bare soil and rock outcrops accounted for 19.3% of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Richness; Pampa biome; Forage species; Environmental gradient.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100017

Distribution of epiphytic macroalgae on the thalli of their hosts in Cuba
Provedor de dados: 39
Autores: Diez García,Yander Luis; Jover Capote,Abdiel; Suárez Alfonso,Ana María; Gómez Luna,Liliana María; Fujii,Mutue Toyota.
We investigated the distribution of epiphytic macroalgae on the thalli of their hosts at eight localities along the southeastern coast of Cuba between June 2010 and March 2011. We divided he epiphytes in two groups according to their distribution on the host: those at the base of the thallus and those on its surface. We determining the dissimilarity between the zones and the species involved. We identified 102 taxa of epiphytic macroalgae. There were significant differences between the two zones. In 31 hosts, the number of epiphytes was higher on the surface of the thallus, whereas the number of epiphytes was higher at the thallus base in 25 hosts, and the epiphytes were equally distributed between the two zones in five hosts (R=−0.001, p=0.398). The mean...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chlorophyta; Epiphytism; Distribution; Phaeophyceae; Rhodophyta.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000400022

Phytoplankton of two rivers in the eastern Amazon: characterization of biodiversity and new occurrences
Provedor de dados: 39
Autores: Cunha,Elane Domênica de Souza; Cunha,Alan Cavalcanti da; Silveira Jr,Arialdo Martins da; Faustino,Silvia Maria Mathes.
During the various hydrological periods in 2011, we studied the phytoplankton along an 87-km stretch of the Araguari and Falsino rivers, which are located in the eastern Brazilian Amazon, in the state of Amapá, Brazil, the most ecologically preserved state in the country. In the study area, the aquatic ecosystem is under pressure from human activities such as, mining, hydroelectric power generation and urbanization, which contrast with the surrounding areas that are designated for biodiversity conservation. The aim of this study was to characterize the composition, frequency and richness of algae species and also to identify spatial-temporal patterns of taxa distribution. During the study period, we identified 185 taxa (136 species in 49 genera). The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Algae; Amapá; Floristic survey; Reservoir; River.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000200011

Storage and fresh cut radish - doi: 10.4025/actasciagron.v35i2.15461
Provedor de dados: 1
Autores: Ayub, Ricardo Antonio; Universidade Estadual de Ponta Grossa; Spinardi, Bruna; Universidade Estadual de Ponta Grossa; Gioppo, Mariane; Universidade Estadual de Ponta Grossa.
The aim of this work was to ascertain the post-harvest preservation of Crimson Giant radishes with the following conditions: 1) stored at room temperature (20 ± 2°C and 75% relative humidity; RH) with or without leaves; or 2) stored at a refrigeration temperature of 5ºC and 90% RH with leaves, without leaves or minimally processed. For radishes stored at room temperature, evaluations were made at 0, 1 and 3 days. For radishes stored at a refrigeration temperature, evaluations were made at 0, 1, 3 and 6 days. The parameters evaluated included weight loss, pulp firmness, soluble solids, pH, and titratable acidity. At room temperature (20 ± 2°C and 75% RH), the radish bulbs with and without leaves had weight losses exceeding 5% after one day of storage, which...
Tipo: Experimento de laboratorio
Palavras-chave: 5.07.01.04-5 Raphanus sativus L.; Refrigeration; Minimum processing Fisiologia Pós-Colheita.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/15461

Biochar as substitute for organic matter in the composition of substrates for seedlings - doi: 10.4025/actasciagron.v35i3.17542
Provedor de dados: 1
Autores: Lima, Stefany Lorrayny; Universidade do Estado de Mato Grosso (UNEMAT); Marimon-Junior, Ben Hur; Universidade do Estado de Mato Grosso (UNEMAT); Petter, Fabiano André; Universidade Federal do Piauí (UFPI); Tamiozzo, Suelen; Universidade do Estado de Mato Grosso (UNEMAT); Buck, Gulherme Bossi; University of Florida; Marimon, Beatriz Schwantes; Universidade do Estado de Mato Grosso.
In this study, we tested the hypothesis that pyrogenic carbon (biochar) has properties that enable it to replace fresh organic matter (cattle manure) in seedling substrates. These properties include specific electrophysiological interactions in soil-plant media, stability and longevity. The experiment was conducted in the nursery at the State University of Mato Grosso, located in the municipality  of Nova Xavantina, between April and June 2011. The experimental design consisted of randomized blocks with ten treatments and four replicates, including a commercial substrate. Linear regression analysis showed a strong positive relationship between manure treatments and number of leaves, fresh and dry biomass, diameter, height and Dickson Quality Index at 30...
Tipo: Ensaios de viveiro
Palavras-chave: Solanum melongena; Charcoal; Cattle manure; Seedling production Fitotecnia Nutrição de plantas.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/17542

Effects of temperature on the germination of Diptychandra aurantiaca (Fabaceae) seeds - doi: 10.4025/actasciagron.v35i2.15977
Provedor de dados: 1
Autores: Oliveira, Ademir Kleber Morbeck; Universidade Anhanguera-Uniderp; Ribeiro, Jonathan Wesley Ferreira; Universidade Anhanguera-Uniderp; Pereira, Kelly Cristina Lacerda; Universidade Anhanguera-Uniderp; Silva, Cassila Andréa Araújo; Universidade Anhanguera-Uniderp.
Diptychandra aurantiaca is a tree belonging to the Fabaceae family. The wood of this tree is moderately heavy and resistant, and it is used to make posts, wooden sleepers and building, among other structures. The aim of this work was to evaluate seed germination and the initial growth of the primary roots in D. aurantiaca at different temperatures using seeds collected in the village of Taboco in Mato Grosso do Sul state, Brazil. The seeds were subjected to constant temperatures of 20, 25, 30 and 35°C and alternating temperatures of 20-30 and 25-35°C using four replications of 25 seeds per treatment in a germination chamber. The results showed that most seeds germinated at 25 and 30°C, with 97 and 87%, respectively, thus indicating that these temperatures...
Tipo: Pesquisa Empírica de Campo
Palavras-chave: 5.02.01.04-2 broad-leafed; Semi-deciduous  savannah (Cerrado); Forest seeds; ‘true-red-charcoal’ Sementes florestais Sementes Florestais.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/15977

Early selection in sugarcane family trials via BLUP and BLUPIS procedures - doi: 10.4025/actasciagron.v35i4.16430
Provedor de dados: 1
Autores: Oliveira, Ricardo Augusto de; Universidade Federal do Paraná; Daros, Edelclaiton; Universidade Federal do Paraná; Resende, Marcos Deon Vilela de; Empresa Brasileira de Pesquisa Agropecuária; Bespalhok Filho, João Carlos; Universidade Federal do Paraná; Zambon, José Luis Camargo; Universidade Federal do Paraná; Ruaro, Lucimeris; Universidade Federal do Paraná.
The objective of this study was to compare early selection in sugarcane families through the best linear unbiased prediction (BLUP) and simulated individual best linear unbiased prediction (BLUPIS) procedures. We tested 80 full-sib families in an incomplete block experimental design. Statistical analyses were performed using the mixed model methodology. The following traits were determined from the first rattoon: tons of stalks per hectare (TSH), percentage of soluble solids w/w in the juice (Brix), and tons of brix per hectare (TBH). Variance components were estimated by restricted maximum likelihood (REML), and the genotypic values of the families were predicted by BLUP and BLUPIS. The BLUPIS procedure suggested the selection of 30 families with a total...
Tipo: Pesquisa científica e procedimentos de seleção de plantas
Palavras-chave: 5.01.03.05-9 Saccharum spp.; Plant breeding; Mixed models; Family selection; Full-sib families Melhoramento Vegetal.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/16430

Net mineralization nitrogen and soil chemical changes with application of organic wastes with ‘Fermented Bokashi Compost’ - doi: 10.4025/actasciagron.v35i2.15133
Provedor de dados: 1
Autores: Boechat, Cácio Luiz; Universidade Federal do Rio Grande do Sul; Santos, Jorge Antonio Gonzaga; Universidade Federal do Recôncavo da Bahia; Accioly, Adriana Maria de Aguiar; Empresa Brasileira de Pesquisa Agropecuária.
The use of organic wastes in agricultural soils is one of the possible ways to employ these materials. The aims of this study were to evaluate the effectiveness of organic wastes and Fermented Bokashi Compost (FBC), to establish the most efficient use of organic wastes for a soil, changing the net nitrogen mineralization and soil chemical properties. The experimental design was completely randomized in a 6 x 2 x 5 factorial, being five organic wastes plus an control (soil without waste), with or without FBC, evaluated at 0, 7, 42, 70 and 91 days of incubation, with three replicates, under laboratory conditions. The organic wastes enhanced the soil chemical properties and increased nitrogen concentration in soil. However, the net nitrogen mineralization was...
Tipo: Experimento sob condições controladas de laboratório
Palavras-chave: 5.01.01.05-6 efficacy of microorganisms; Sewage sludge; Degradation; Fertility Fertilidade do Solo e Adubação.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/15133

Response to the selection in the 11th cycle of reciprocal recurrent selection among full-sib families of maize - doi: 10.4025/actasciagron.v35i4.17489
Provedor de dados: 1
Autores: Berilli, Ana Paula Cândido Gabriel; Instituto Federal do Espírito Santo; Pereira, Messias Gonzaga; Universidade Estadual do Norte Fluminense Darcy Ribeiro; Trindade, Roberto dos Santos; Instituto Capixaba de Pesquisa; da Costa, Fabiane Rabelo; Instituto Nacional do Semiárido (INSA/MCTI); Cunha, Keila Silva da; Universidade Estadual do Norte Fluminense Darcy Ribeiro.
The continuous gains in cycles of recurrent selection have raised disagreement among researchers. Two hundred and forty-two full-sib families were obtained from CIMMYT and Piranão populations and evaluated in a simple lattice design in two environments to estimate the response to selection in the 11th cycle of the UENF reciprocal recurrent selection program. No genotype x environment interaction was observed for most of the traits evaluated, indicating that a single recurrent selection program can be conducted for both sites. The population studied exhibited wide genotypic variability and heritability estimates ranged from 33 to 73%, indicating prospects of selection gain for the following cycles. The predicted genetic gain in yield was 12.90%. It is...
Tipo: Pesquisa Empírica de Campo
Palavras-chave: 5.01.03.05-9 genetic gains; Selection index; Interpopulation hybrids; Longevity of recurrent selection Melhoramento Vegetal.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/17489

Sustainable production of ‘Comum’ tannia in the hilling and function of seedling types in three crop seasons - doi: 10.4025/actasciagron.v35i2.16152
Provedor de dados: 1
Autores: Heredia Zárate, Néstor Antonio; Universidade Federal da Grande Dourados; Vieira, Maria do Carmo; Universidade Federal da Grande Dourados; Faccin, Fabiane Cargnin; Universidade Federal da Grande Dourados; Heredia Vieira, Danilo Augusto; Universidade Estadual de Maringa; Gassi, Rosimeire Pereira; Universidade Federal da Grande Dourados; Santos, Anna Luiza Farias dos; Universidade Federal da Grande Dourados.
This study aims to discover the agro-economic yield of the ‘Comum’ tannia, which was propagated with five seedling types (Extra, Large, Medium, Small and Tiny) and grown both with and without a hilling operation during three crop seasons. In each agricultural year, the treatments were arranged as a 5 x 2 factorial in a randomized complete block design with four replications. The harvests were conducted 238 (2007-08), 231 (2008-09) and 237 (2009-10) days after planting. The data were submitted to an analysis of variance each year. The plants produced from large seedlings and RM-corms had a higher fresh leaf weight. Additionally, the dry weight of the RFC-commercial cormels and RFNC-non-commercial cormels was higher with extra seedlings. The plants grown...
Tipo: Pesquisa de campo
Palavras-chave: Agronomia; Fitotecnia; Tratos culturais Xanthosoma mafaffa; Propagation materials; Cultural treatments; Yield; Income Tratos culturais.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/16152

The control and protection of cotton plants using natural insecticides against the colonization by Aphis gossypii Glover (Hemiptera: Aphididae) - doi: 10.4025/actasciagron.v35i2.15764
Provedor de dados: 1
Autores: Pinto, Ezio Santos; Universidade Federal Rural de Pernambuco; Barros, Eduardo Moreira; Universidade Federal Rural de Pernambuco; Torres, Jorge Braz; Universidade Federal Rural de PernambucoUFRPE; Neves, Robério Carlos dos Santos; Universidade Federal Rural de Pernambuco.
The cotton aphid, Aphis gossypii Glover (Hemiptera: Aphididae), is a key pest of cotton, irrespective of the use of conventional or organic management. In organic systems, however, the use of synthetic insecticides is not allowed, increasing the difficulty of controlling this pest. This work evaluated aphid control and the ability of products to prevent aphid infestation using natural insecticides compared to a standard synthetic insecticide. The control trial was conducted with four products [Beauveria bassiana (Boveril&amp;amp;reg;), neem oil (Neemseto®), and cotton seed oil compared to thiamethoxam (Actara®)], and untreated plants served as the control group. The trial testing the efficacy of these products in preventing aphid infestation was conducted...
Tipo: Experimetno
Palavras-chave: Ciências Agrárias Insecta; Organic cotton; Cotton aphid; Alternative control; Population growth rate Fitossanidade.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/15764

Cultivar-specific and ulvan-induced resistance of apple plants to Glomerella leaf spot are associated with enhanced activity of peroxidases - doi: 10.4025/actasciagron.v35i3.16174
Provedor de dados: 1
Autores: Araujo, Leonardo; Universidade Federal de Santa Catarina; Stadnik, Marciel João; Universidade Federal de Santa Catarina.
Glomerella leaf spot (GLS) is an important disease of apple plants, and the use of the algal polysaccharide ulvan represents a new technology for its control. This study aimed to verify whether the defense mechanisms involved in cultivar-specific and ulvan-induced plant resistance to GLS are associated with changes in the activities of peroxidase and β-1,3-glucanase. Seedlings were first sprayed with ulvan or water and then inoculated with Colletotrichum gloeosporioides [W1] 6 days later. The disease severity was recorded daily on both young and old leaves up to 10 days after inoculation, and the enzyme activities were monitored from 24 to 72h after inoculation (HAI). Although the young leaves were more susceptible to GLS, ulvan reduced approximately 66%...
Palavras-chave: 5.01.02.00-1; 5.01.02.01-0 Colletotrichum gloeosporioides; Malus domestica; Ulva sp.; Induction resistance; Peroxidase  glucanase Fitossanidade; Fitopatologia.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/16174

NaCl and Phaeomoniella chlamydospora affect differently starch and sucrose metabolism in grapevines - doi: 10.4025/actasciagron.v35i2.15690
Provedor de dados: 1
Autores: Oliveira, Helena; Universidade de Aveiro; Costa, Armando; Universidade de Aveiro; Santos, Conceição; Universidade de Aveiro.
Vineyards production is often affected by diseases as esca and Petri disease and by excess of salt. Phaeomoniella chlamydospora is one of the pathogenic fungi associated to esca disease, but its interaction with the plant under excess of salt remains unknown. Under controlled in vitro conditions, Vitis vinifera L. plants were exposed to 0, 20 and 100 mM NaCl and inoculated with P. chlamydospora. Both inoculation and salt stress decreased the levels of chlorophylls, which was aggravated when both factors were combined. NaCl 100 mM and, mostly, inoculation, decreased maximum fluorescence (Fm), variable fluorescence (Fv) and Fv/Fm. The activity of a-amylase decreased in plants exposed to 100 mM or inoculated but no synergic effect of these factors was...
Tipo: Ensaio laboratorial em condições controladas
Palavras-chave: 5.01.02.01-0; 5.01.03.06-7 Fisiologia de Plantas grapevine; Phaeomoniella chlamydospora; Salt stress; Starch metabolism; Amylase; Sucrose metabolism.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/15690

Effect of salinity and priming on seedling growth in rapeseed (Brassica napus var oleifera Del.) - doi: 10.4025/actasciagron.v35i4.17655
Provedor de dados: 1
Autores: Benincasa, Paolo; University of Perugia; Pace, Roberta; University of Perugia; Quinet, Muriel; Université Catholique de Louvain; Lutts, Stanley; Université Catholique de Louvain.
Experiments were performed to examine the effect of salt stress and GA3-priming on initial growth of two rapeseed cultivars, one tolerant and one sensitive to salt stress during germination. Seedlings from seeds germinated in salty (as NaCl) and non salty substrate were grown in salty and non salty hydroponics. Salt stress reduced seedling growth of the two genotypes consistently with their degree of stress tolerance during germination. Seedlings from stress sensitive seeds germinated under high salinity showed a rapid recover of growth in non stressing conditions. The effect of salt stress on shoot/root ratio was controversial, increased for lab and decreased for greenhouse experiments, probably due to different timing of stress application and additional...
Tipo: Laboratoty analysis
Palavras-chave: NaCl; GA3; Root  shoot; Fluorescence; Stomatal conductance.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/17655

Arbuscular mycorrhizal fungi within agroforestry and traditional land use systems in semi-arid Northeast Brazil - doi: 10.4025/actasciagron.v35i3.16213
Provedor de dados: 1
Autores: Sousa, Carla Silva; Universidade Federal de Pernambuco; Menezes, Rômulo Simões Cezar; Universidade Federal de Pernambuco; Sampaio, Everardo Valadares de Sá Barretto; Universidade Federal de Pernambuco; Lima, Francisco Sousa; Universidade Federal do Recôncavo da Bahia; Oehl, Fritz; Agroscope Reckenholz-Tänikon Research Station; Maia, Leonor Costa; Universidade Federal de Pernambuco.
The diversity of arbuscular mycorrhizal fungi (AMF) can be a critical factor in enhancing both the productivity and the diversity of plants in ecosystems, and the plants in the ecosystem also strongly influence the occurrence of these fungi. The relationships between different land use systems and AMF communities in the semi-arid region of the State of Paraíba, NE Brazil were evaluated. The experiment followed a split-plot randomized block design, with four replicates. The main plots were defined by the presence or absence of trees (gliricidia and maniçoba), while the split plots were defined by three land use systems: 1) traditional cropping of maize + beans, 2) buffel grass pasture, and 3) prickly pear forage crop. The presence of trees increased...
Palavras-chave: Ciencia do solo; Microbiologia agrícola mycorrhizae; Agroecosystems; Glomalin.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/16213

Comparative allelopathic effects of Cryptocarya moschata and Ocotea odorifera aqueous extracts on Lactuca sativa - doi: 10.4025/actasciagron.v35i2.15758
Provedor de dados: 1
Autores: Prichoa, Franciele Carla; Universidade Regional Integrada do Alto Uruguai e das Missões; Leyser, Gabriela; Universidade Regional Integrada do Alto Uruguai e das Missões; Oliveira, José Vladimir de; Universidade Federal de Santa Catarina; Cansian, Rogério Luis; Universidade Regional Integrada do Alto Uruguai e das Missões.
The aim of this work was to compare the allelopathic effects of aqueous leaf extracts from Cryptocarya moschata and Ocotea odorifera on the seed germination and initial growth of Lactuca sativa (lettuce). The extracts were prepared by cold maceration, which was accomplished by adding distilled water to the dried plant material 1:10 (w v-1) and grinding. The treatment concentrations (0, 0.25, 0.5, 0.75 and 1%) were obtained by dissolving the dried crude extract in distilled water. The allelopathic potential of the dried Ocotea odorifera and Cryptocarya moschata leaves on Lactuca sativa was observed through reduction of the percentage of seeds that germinated, the index of germination and the length of the roots as well as structural abnormalities in L....
Palavras-chave: Alelopatia; Cryptocarya moschata; Lauraceae; Germinação. allelopathy; Allelochemical; Lauraceae; Germination.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/15758

Cowpea nodulation, biomass yield and nutrient uptake, as affected by biofertilizers and rhizobia, in a sodic soil amended with Acidithiobacillus - doi: 10.4025/actasciagron.v35i4.16994
Provedor de dados: 1
Autores: Stamford, Newton Pereira; Universidade Federal Rural de Pernambuco; Silva Junior, Sebastião da; Universidade Federal Rural de Pernambuco; Santos, Carolina Etienne de Rosália e Silva; Universidade Federal Rural de Pernambuco; Freitas, Ana Dolores Santiago de; Universidade Federal Rural de Pernambuco; Lira junior, Mário de Andrade; Universidade Federal Rural de Pernambuco; Barros, Maria de Fátima Cavalcanti; Universidade Federal Rural de Pernambuco.
Sodic soils require application of amendments as gypsum and organic matter. Many types of compost have been tested in sodic soils reclamation; however, these materials often do not provide satisfactory pH reduction. A recent study reported effective effects applying mixture of gypsum and sulfur inoculated with Acidithiobacillus in sodic soils with high pH and exchangeable sodium, though the effects on plant parameters were not evaluated. The present study was conducted to verify the effects of BPK rock biofertilizers on nodulation, biomass yield and nutrient uptake in cowpea compared with mineral fertilizer after sodic soil amendment. The BPK biofertilizers and PK mineral fertilizer were applied at different rates, and plants were inoculated with effective...
Tipo: Pesquisa em casa de vegetação
Palavras-chave: Soil salinity  Sodic soil  Nitrogen fixation Vigna unguiculata; Soil amendment; Sulfur-gypsum  interaction; Sulfur oxidation; Sulfur oxidizing bacteria.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/16994

In vitro culture of Gigaspora decipiens and Glomus clarum in transformed roots of carrot: the influence of temperature and pH - doi: 10.4025/actasciagron.v35i3.16581
Provedor de dados: 1
Autores: Costa, Francilina Araújo; Universidade Católica Dom Bosco; Haddad, Lydice Sant’Anna Meira; Universidade Federal do Recôncavo da Bahia; Kasuya, Maria Catarina Megumi; Universidade Federal de Viçosa; Otoni, Wagner Campos; Universidade Federal de Viçosa; Costa, Maurício Dutra; Universidade Federal de Viçosa; Borges, Arnaldo Chaer; Universidade Federal de Viçosa.
Monoxenic cultures of arbuscular mycorrhizal fungi (AMF) in transformed roots have been used to better understand the symbiosis with these fungi, but few species have been successfully established in vitro. The object was to establish monoxenic cultures of Gigaspora decipiens and Glomus clarum and to verify the effects of temperature and pH on spore formation. Cultures were established from superficially disinfested spores that were germinated on an agar and water. After germination, the spores were transferred to Petri dishes containing transformed carrot roots. After 4-6 days formed newly formed spores and structures typical. The effects of temperature (22, 25, 28 or 32°C) and pH (4.0, 4.5, 5.5 or 6.5) on the production of spores were assessed over three...
Tipo: Pesquisa em laboratório
Palavras-chave: 5.01.01.04-8 arbuscular mycorrhizal fungi; Monoxenic culture; In vitro culture; Monoxenic inoculum; Transformed roots Microbiologia Agrícola.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/16581

Microbiological activity of caraway (Carum carvi L.) essential oil obtained from different origin - doi: 10.4025/actasciagron.v35i4.16900
Provedor de dados: 1
Autores: Seidler-Łożykowska, Katarzyna; Institute of Natural Fibres and Medicinal Plants; Kędzia, Bogdan; Institute of Natural Fibres and Medicinal Plants; Karpińska, Elżbieta; Institute of Natural Fibres and Medicinal Plants; Bocianowski, Jan; Poznań University of Life Sciences.
Caraway is one of the most important medicinal plant cultivated in Poland. Caraway essential oil performs medium antimicrobial activity, although it inhibits growth of many bacteria and fungi. The aim of the study was to evaluate microbiological activity of caraway oil obtained from fruit originated from different genotypes and investigate the correlation between this activity and essential oil content and its main components content. In the experiments done in 2008 and 2009, essential oil of 20 selected caraway genotypes originated from: European botanical gardens (17), cultivar ‘Konczewicki’ and our own breeding strains (2) was tested. The Minimal Inhibitory Concentration (MIC) of oil, which inhibited standard bacterial strain was investigated. MIC value...
Tipo: Fieldwork; laboratory analysis
Palavras-chave: Caraway; Carvone; Essential oil; Limonene; Microbiological activity.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/16900

The management of cover plant residues for cotton cropped in a no-tillage system - doi: 10.4025/actasciagron.v35i3.15294
Provedor de dados: 1
Autores: Furlani Júnior, Enes; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Neves, Danilo de Carvalho; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Santos, Marcio Lustosa; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Ferrari, Samuel; Universidade Estadual Paulista “Júlio de Mesquita Filho”.
The cutting of plant residue in no-tillage systems under certain environmental conditions becomes necessary to adequately establish and grow crops. This study aims to assess the effect on the yield of different methods of managing millet plant residue in cotton plantations. The study was conducted during the agricultural years 2006/07 and 2007/08, and the treatments included no-mechanical-treatment tillage and the use of a rotary shredder, crimper-roller, and mechanical disintegrator for millet plants before sowing the cotton. Evaluations were performed for the residue fragmentation, emergence speed, percent of soil cover during the cycle and yield of the cotton crop. The emergence speed was faster in the management with the rotary shredder. In 2006/07,...
Tipo: Pesquisa de Campo
Palavras-chave: 5.01.03.00-8 soil cover; Gossypium hirsutum; Pennisetum glaucum Fitotecnia.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/15294

Chemical characterization and mineral levels in the fruits of blackberry cultivars grown in a tropical climate at an elevation - doi: 10.4025/actasciagron.v35i2.16630
Provedor de dados: 1
Autores: Guedes, Mayara Neves Santos; Universidade Federal de Lavras - UFLA; Abreu, Celeste Maria Patto de; Universidade Federal de Lavras; Maro, Luana Aparecida Castilho; Universidade Federal de Lavras; Pio, Rafael; Universidade Federal de Lavras; Abreu, José Renato de; Universidade Federal de Lavras; Oliveira, João Otávio de; Universidade Federal de Lavras.
Sensorial attributes such as color, texture, acidity and nutritional composition are essential quality components for blackberry (Rubus spp.). The mineral content and quality of fruits of different blackberry cultivars produced in Lavras, Southern Minas Gerais, in a tropical climate at an elevation (Cwb, according to Köppen) were analyzed. The analyzed minerals were phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), zinc (Zn), manganese (Mn), copper (Cu) and iron (Fe). Additionally, chemical characteristics, the total acidity (citric acid), pH, soluble solids (°Brix) and vitamin C (ascorbic acid) level, and sensory characteristics, color (L*a*b) and firmness (N) were also evaluated. According to the results, the Choctaw and Xavante blackberry...
Palavras-chave: 5.07.01.02-9 Rubus spp.; Micronutrients; Macronutrients; Vitamin C Química  Física  Físico-Química e Bioquímica dos Alim. e das Mat.-Primas Alimentares.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/16630

Population structure of Monosporascus cannonballus isolated from melons produced in Northeastern Brazil based on mycelial compatibility groups - doi: 10.4025/actasciagron.v35i2.15182
Provedor de dados: 1
Autores: Bezerra, Cíntia Souza; Universidade Federal Rural de Pernambuco; Correia, Kamila Câmara; Universidade Federal Rural de Pernambuco; Câmara, Marcos Paz Saraiva; Universidade Federal Rural de Pernambuco; Sales Junior, Rui; Universidade Federal Rural do Semi-Árido; Armengol, Josep; Instituto Agroforestal Mediterráneo; Michereff, Sami Jorge; Universidade Federal Rural de Pernambuco.
The population structure of Monosporascus cannonballus, which causes vine decline in melons, was assessed based on the determination of mycelial compatibility groups (MCGs) in a collection of 58 isolates obtained from seven melon fields in three municipalities of Northeastern  Brazil. For comparison, an additional 11 isolates of M. cannonballus from Spain were included in the analysis. MCGs were determined through comparisons of paired isolates growing on PDA culture media in the dark at 30ºC in various combinations. The Brazilian isolates were assigned into four MCGs: MCG-1 (n = 35 isolates), MCG-2 (n = 20), MCG-3 (n = 2), and MGC-4 (n = 1). MCG-1 and MCG-2 included isolates from all surveyed areas. The Spanish isolates were assigned into six different...
Tipo: Pesquisa científica
Palavras-chave: 5.01.02.01-0 Cucumis melo; Melon; Vine decline; Soilborne pathogen; Genetic diversity Fitopatologia Cucumis melo; Melon; Vine decline; Soilborne pathogen; Genetic diversity.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/15182

The use of multiple endmember spectral mixture analysis (MESMA) for the mapping of soil attributes using Aster imagery - doi: 10.4025/actasciagron.v35i3.16119
Provedor de dados: 1
Autores: Genú, Aline Marques; Universidade Estadual do Centro-Oeste; Roberts, Dar; University of California; Demattê, José Alexandre Melo; Universidade de São Paulo.
Systematic, physically based acquisition of information regarding soils is required to meet increasing demand in agricultural and environmental systems. The objective of this work is to evaluate the use of multiple endmember spectral mixture analysis (MESMA) for mapping soil attributes within ASTER imagery. A total of 184 georeferenced soil samples were collected from Rafard, São   Paulo State, Brazil. These points were overlain on the satellite image to collect spectral data. The laboratory and image information were then arranged and prepared by clustering samples into classes based on the following soil attributes: texture, organic matter, base saturation (V%), CEC and total iron. Following this classification, mean spectral curves were generated for...
Palavras-chave: Agronomia; Ciência do Solo remote sensing; Spatial distribution; Geostatistics.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/16119

The Mann-Kendall test: the need to consider the interaction between serial correlation and trend - doi: 10.4025/actasciagron.v35i4.16006
Provedor de dados: 1
Autores: Blain, Gabriel Constantino; Instituto Agronômico de Campinas (IAC).
Pre-whitening approaches have been widely used to remove the influence of serial correlations on the Mann-Kendall trend test (MK_prew). However, previous studies indicate that this procedure may lead to a false reduction of the significance of a trend. An alternative approach (MK_interact) has been proposed to improve the assessment of the significance of a trend in auto-correlated data. Therefore, the present study compared the performance of the MK_prew and MK_interact for detecting trends in auto-correlated series. Sets of Monte Carlo experiments were carried out to evaluate the occurrence of type I and II errors obtained from both approaches. The analyses were also based on 10-day values of the difference between precipitation and potential...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Monte Carlo experiments; Auto-correlated series; Climate change; Pre-whitening.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/16006

The leaching of trifloxysulfuron-sodium and pyrithiobac-sodium in soil columns as a function of soil liming - doi: 10.4025/actasciagron.v35i2.16349
Provedor de dados: 1
Autores: Guerra, Naiara; Universidade Estadual de Maringá-UEM; Oliveira Júnior, Rubem Silvério de; Universidade Estadual de Maringá - UEM; Constantin, Jamil; Universidade Estadual de Maringá - UEM; Oliveira Neto, Antonio Mendes de; Universidade Estadual de Maringá - UEM; Dan, Hugo de Almeida; Universidade Estadual de Maringá - UEM; Braz, Guilherme Braga Pereira; Universidade Estadual de Maringá - UEM.
Scarce research has been published concerning the effect of soil pH on the leaching potential of herbicides in tropical soils. Thus, we designed this study to evaluate the influence of soil liming on the leaching of trifloxysulfuron-sodium and pyrithiobac-sodium after simulated rainfall depths in soil columns. In the study, two trials were conducted simultaneously; the first experiment evaluated trifloxysulfuron-sodium (7.5 g ha-1), while the second experiment evaluated pyrithiobac-sodium (70 g ha-1). Both experiments were conducted in a randomized block design with a 2 x 4 x 5 factorial scheme and four replications. The design’s factors corresponded to 2 soil liming conditions (with or without liming), 4 simulated rainfall depths (0, 15, 30, and 45 mm)...
Palavras-chave: ALS inhibitors; Mobility; Soil pH; Tropical soils.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/16349

GENES - a software package for analysis in experimental statistics and quantitative genetics - doi: 10.4025/actasciagron.v35i3.21251
Provedor de dados: 1
Autores: Cruz, Cosme Damião; Universidade Federal de Viçosa.
GENES is a software package used for data analysis and processing with different biometric models and is essential in genetic studies applied to plant and animal breeding. It allows parameter estimation to analyze biological phenomena and is fundamental for the decision-making process and predictions of success and viability of selection strategies. The program can be downloaded from the Internet (http://www.ufv.br/dbg/genes/genes.htm or http://www.ufv.br/dbg/biodata.htm) and is available in Portuguese, English and Spanish. Specific literature (http://www.livraria.ufv.br/) and a set of sample files are also provided, making GENES easy to use. The software is integrated into the programs MS Word, MS Excel and Paint, ensuring simplicity and effectiveness in...
Palavras-chave: Software; Statistical analysis; Genetic analysis; Quantitative genetics; Biometry software  análise estatística  análise genética  genética quantitativa  biometria.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/21251

Effect of Anacardium humile St. Hill (Anacardiaceae) Aqueous Extract on Mahanarva fimbriolata (Stal, 1854) (Hemiptera: Cercopidae) - doi: 10.4025/actasciagron.v35i4.16597
Provedor de dados: 1
Autores: Pistori, Melissa Grindi Bragato; Universidade Católica Dom Bosco; Roel, Antonia Railda; Universidade Católica Dom Bosco; Valério, José Raul; Centro Nacional de Pesquisa de Gado de Corte - EMBRAPA; Oliveira, Marlene Conceição Monteiro; Empresa Brasileira de Pesquisa Agropecuária / Agência de Desenvolvimento Agrário e Extensão Rural; Grisoto, Eliane; Escola Superior de Agricultura Luiz de Queiroz/USP; Matias, Rosemary; Universidade Anhanguera – Uniderp.
The study of plant-derived substances for the control of insect pests is desirable in the attempt to discover less toxic insecticides that are safe for the environment. Indeed, extracts from the cashew of the savannah, Anacardium humile, have shown insecticidal activities against certain insects. The sugarcane root spittlebug Mahanarva fimbriolata is considered an important pest of sugarcane, causing severe damage and significant yield reductions. The aim of this study was to evaluate the effect of the aqueous extract of A. humile (0.05, 0.4 and 1.0%) on M. fimbriolata. The application of the aqueous extract of Anacardium humile resulted in 53.1% nymphal mortality at a concentration of 1.0%, which was significantly higher than that observed in the negative...
Tipo: Pesquisa em Laboratório
Palavras-chave: 5.01.02.00-1 insecta; Insecticidal plants; Plant active ingredients; Sugarcane pests 5.01.02.01-0.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/16597

Water balance model and eucalyptus growth simulation in the rio doce basin, Brazil - doi: 10.4025/actasciagron.v35i4.16955
Provedor de dados: 1
Autores: Silva, Welliam Chaves Monteiro; Universidade Federal de Viçosa; Ribeiro, Aristides; Universidade Federal de Viçosa; Neves, Júlio Cesar Lima; Universidade Federal de Viçosa; Barros, Nairam Felix de; Universidade Federal de Viçosa; Leite, Fernando Palha; Celulose Nipo Brasileira S.A.
Although the 3-PG model is widely used for forest productivity calculations, there are processes that do not present appropriate physical treatment. The aim of this study was to generate a tool to improve the water balance calculation in the model to enhance the energy balance and transpiration process. The calculation of transpiration was modified to account for variations in solar radiation with the inclination and azimuth of the terrain; the vapor pressure deficit was changed based on the relative humidity and air temperature; and the stomatal conductance varied according to solar radiation, vapor pressure deficit and air temperature. The water storage in the soil varied with the depth of the root system and the total water availability (TWA) in the...
Palavras-chave: 5.00.00.00-4; 5.01.05.00-0 tilt surface; Solar radiation; Stomatal resistance; Ecophysiological model Agrometeorologia.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/16955

The influence of organic matter from swine wastewater on the interaction and transport of alachlor in soil - doi: 10.4025/actasciagron.v35i3.16374
Provedor de dados: 1
Autores: Dal Bosco, Tatiane Cristina; Universidade Tecnológica Federal do Paraná, Câmpus Londrina; Sampaio, Silvio César; Universidade Estadual do Oeste do Paraná; Coelho, Silvia Renata Machado; Universidade Estadual do Oeste do Paraná; Corrêa, Marcus Metri; Universidade Federal Rural de Pernambuco; Netto, André Maciel; Universidade Federal de Pernambuco; Cosmann, Natássia Jersak; Universidade Estadual do Oeste do Paraná.
This study evaluated the effects of total and dissolved organic matter produced from two swine wastewater treatment systems, a biodigester and a manure lagoon, on the adsorption, desorption, and leaching of alachlor (2-chloro-N-(2,6-diethylphenyl)-N-(methoxymethyl)acetamide) in soil. It was used the batch equilibrium method to test adsorption and desorption, and the results are presented in Freundlich isotherms. It also used disturbed soil columns to evaluate the miscible displacement of alachlor in soil treated with total and dissolved organic matter. This assay was used to monitor the concentration of alachlor in the leached material, the amount of total organic carbon, and the pH. The addition of swine wastewater promoted greater adsorption and...
Tipo: Pesquisa empírica de laboratório
Palavras-chave: 5.00.00.00-4; 5.03.00.00-8; 5.03.04.03-8 adsorption; Hydro-dispersive parameters; Infrared spectroscopy; Leaching; Pesticide Reúso de águas residuárias  pesticidas  água residuária de suinocultura  matéria orgânica.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/16374

The yield and physiological quality of oat seeds subjected to cover with zinc - doi: 10.4025/actasciagron.v35i3.16359
Provedor de dados: 1
Autores: Tavares, Lizandro Ciciliano; Universidade Federal de Pelotas; Brunes, André Pich; Universidade Federal de Pelotas; Gadotti, Gizele Ingrid; Universidade Federal de Pelotas; Tunes, Lilian Madruga de; Universidade Federal de Pelotas; Barros, Antonio Carlos Souza Albuquerque; Universidade Federal de Pelotas; Villela, Francisco Amaral; Universidade Federal de Pelotas.
Micronutrients, such as zinc, are important for the metabolic activities that can benefit germination and seed vigor because many soils are deficient in this micronutrient. The objective of this study was to evaluate the influence of coating oat seeds with zinc on the physiological quality and yield of the seeds produced. The experimental design was completely randomized, with a 2 x 5 factorial arrangement of the following, with four replications per treatment: factor A - product 1, 780 g L-1 zinc, and product 2, 17 and 600 g L-1 nitrogen and zinc, respectively; and factor B - 0, 1, 2, 3 and 4 mL of each product kg-1 seed. The results were subjected to an analysis of variance and a means comparison test (p ≤ 0.5 using Tukey’s test). The experimental plots...
Palavras-chave: Agronomia Avena sativa L.; Germination; Micronutrient; Vigor Sementes.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/16359

The genetic diversity of strawberry (Fragaria ananassa Duch.) hybrids based on ISSR markers - doi: 10.4025/actasciagron.v35i4.16737
Provedor de dados: 1
Autores: Nunes, Claudinéia Ferreira; Empresa de Pesquisa Agropecuária de Minas Gerais; Ferreira, Juliano Lino; Empresa de Pesquisa Agropecuária de Minas Gerais; Generoso, Andressa Leal; Empresa de Pesquisa Agropecuária de Minas Gerais; Carvalho, Mário Sérgio Dias; Empresa de Pesquisa Agropecuária de Minas Gerais; Pasqual, Moacir; Universidade Federal de Lavras; Cançado, Geraldo Magela de Almeida; Empresa de Pesquisa Agropecuária de Minas Gerais.
The strawberry is an important agricultural crop in Brazil. However, most of the commercial genotypes currently in cultivation in Brazil were developed in other countries with environmental adaptations often inadequate for the regional conditions. In this work, inter-simple sequence repeat markers were used to determine the genetic variability and the loci segregation profiles of 84 strawberry hybrids obtained from a genetic breeding program at the ‘Empresa de Pesquisa Agropecuária de Minas Gerais.’ The hybrids were produced from crosses involving the following progenitors: ‘Toyonoka’ x ‘Sweet Charlie’, ‘Camino Real’ x ‘Sweet Charlie’, ‘Oso Grande’ x ‘Sweet Charlie’, ‘Oso Grande’ x ‘Toyonoka’, ‘Dover’ x ‘Oso Grande’, and ‘Camino Real’ x ‘Toyonoka’....
Tipo: Marcadores moleculares
Palavras-chave: 5.01.03.05-9 genetic dissimilarity; Pre-breeding; Molecular markers Melhoramento Vegetal genetic dissimilarity; Pre-breeding; Molecular markers.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/16737

In vitro cultivation of zygotic embryos from Murici (Byrsonima cydoniifolia A. Juss.): establishment, disinfection, and germination - doi: 10.4025/actasciagron.v35i2.15402
Provedor de dados: 1
Autores: Martendal, Cíntia de Oliveira; Universidade Estadual de Maringá; Bernardino, Murilo Martins; Instituto Federal Goiano; Pereira, Flávia Dionísio; Cooperativa Agroindustrial dos Produtores Rurais do Sudoeste Goiano Ltda.; Silva, Fabiano Guimarães; Instituto Federal Goiano; de Menezes, Carlos César Evangelista; Cooperativa Agroindustrial dos Produtores Rurais do Sudoeste Goiano Ltda.; Monteiro Hara, Alessandra Cristina Boffino de Almeida; Instituto Federal Goiano.
The objective of this study is to establish an in vitro germination and cultivation protocol for murici (Byrsonima cydoniifolia A. Juss.) using zygotic embryos. Therefore, three assays were performed: in assay I, embryo asepsis was tested at exposure times of 5, 10, 15, 20, 25, and 30 minutes in 2.5% sodium hypochlorite, with or without immersion in 70% alcohol; in assay II, MS (MURASHIGE; SKOOG, 1962) e WPM (LLOYD; McCOWN, 1980) culture media were tested at salt concentrations of 25, 50, and 100%, with or without the addition of sucrose, to germinate the buds; in assay III, seedling growth was evaluated in MS and WPM culture media at salt concentrations of 25, 50 and 100%. Sodium hypochlorite (2.5%) with or without 70% alcohol was used to avoid...
Tipo: Pesquisa Empírica de Campo
Palavras-chave: 5.01.03.04-0 tissue culture; Asepsis; Culture medium; Cerrado fruit Fitotecnia.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/15402

Genetics of the concentration of copper in common bean seeds - doi: 10.4025/actasciagron.v35i3.16520
Provedor de dados: 1
Autores: Poersch, Nerison Luís; Universidade Federal de Santa Maria; Ribeiro, Nerinéia Dalfollo; Universidade Federal de Santa Maria; Rosa, Daniele Piano; Universidade Federal de Santa Maria; Maziero, Sandra Maria; Universidade Federal de Santa Maria; Jost, Evandro; Instituto Federal de Educação, Ciência e Tecnologia Farroupilha.
The common bean (Phaseolus vulgaris L.) is an important source of copper in human nutrition. The objective of this research was to investigate the possible maternal effects on copper concentrations in the seeds of the common bean, to estimate the heritability and the selection gains in early hybrid generations for the characteristic of copper concentration and to evaluate the potential for genetic improvement. The controlled crossings were performed among IAPAR 44 x IAPAR 31 and Diamante Negro x TPS Bonito cultivars. The reciprocal F1, and F2 generations, as well as the backcross populations, were produced by each hybrid combination. The range of variation in the copper concentration among the tested progenies was from 1.07 to 7.75 mg kg-1 dry matter, and...
Palavras-chave: Agronomia Phaseolus vulgaris; Embryo; Maternal effect; Heritability; Early generation Melhoramento Vegetal.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/16520

Propagation of Noble Dendrobium (Dendrobium nobile Lindl.) by cutting - doi: 10.4025/actasciagron.v35i4.15198
Provedor de dados: 1
Autores: Venturieri, Giorgini Augusto; UFSC - Universidade Federal de Santa Catarina; Pickscius, Fabiano José; Centrais de Abastecimento do Estado de Santa Catarina S.A.
The Noble Dendrobium orchid (Dendrobium nobile Lindl.) is an ornamental species usually propagated by leaf axillary shoots called “Keikes”, but cutting is possible although, many do not produce leaves or roots and eventually rot. To increase the proportion of successful stalk cuttings, two substrates were evaluated in the present study (gravel and a 1:1 tree-fern shredded trunk:palm seed mixture) in interaction with the application of nitrogen fertilizer (urea 2 g L-1) and a commercial leaf fertilizer made from kelp seaweed (“Kelpak” a 2 mL L-1). Only water was applied for the control treatment. The evaluated parameters included the proportion of successful cuttings, vigor, the proportion of rotten stalks, the number of roots/plant and root length/per...
Palavras-chave: 5.01.04.00.4 Kelpak; Orchids; Rot; Urea 5.01.03.04-0.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/15198

Comparison between grafting and cutting as vegetative propagation methods for conilon coffee plants - doi: 10.4025/actasciagron.v35i4.16917
Provedor de dados: 1
Autores: Andrade Júnior, Saul de; Universidade Federal do Espírito Santo/CEUNES.; Alexandre, Rodrigo Sobreira; Universidade Federal do Espírito Santo (UFES/CEUNES).; Schmildt, Edilson Romais; Universidade Federal do Espírito Santo (UFES/CEUNES).; Partelli, Fábio Luiz; Universidade Federal do Espírito Santo (UFES/CEUNES).; Ferrão, Maria Amélia Gava; Empresa Brasileira de Pesquisa Agropecuária; Mauri, Aldo Luiz; Instituto Capixaba de Pesquisa.
The purpose of this study was to assess the growth of conilon coffee tree plantlets that were propagated by grafting and cutting. The experiment was conducted at the plantlet production site of Incaper’s Experimental Farm in the city of Marilândia, Espírito Santo  State. For grafting, plantlets derived from the seed propagation of Coffea canephora cv. Robusta Tropical (ENCAPER 8151) were used as rootstocks, and six clones of cv. Conilon Vitória (INCAPER 8142) were used as the grafts. The cutting was performed with six clones that were used for grafting. The experimental design consisted of randomized blocks of twelve treatments with five repetitions composed of twelve plantlets. On the hundred and fifth day, the averages of the variables were assessed and...
Tipo: Produção vegetal
Palavras-chave: 5.01.00.00-9 Coffea canephora; Coffee; Growth; Cloning Agronomia.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/16917

Induction of water deficit tolerance by cold shock and salicylic acid during germination in the common bean - doi: 10.4025/actasciagron.v35i2.15967
Provedor de dados: 1
Autores: Agostini, Edna Antônia Torquato; Universidade do Oeste Paulista; Machado-Neto, Nelson Barbosa; Universidade do Oeste Paulista; Custódio, Ceci Castilho; Universidade do Oeste Paulista.
The application of short-term stresses or elicitors in seedlings or embryos with high metabolic activity might increase multi-adversity tolerance. Beans seeds cv. IAC-Carioca were exposed to cold shock temperatures (S - 7°C 24h-1) and salicylic acid (SA - 0.01 mM 48h-1) during imbibition to study physiological responses to osmotic stress physiological responses. The seeds were soaked in paper towel imbibed in water or salicylic acid at 25°C for 24h. The seed were subsequently submitted to temperatures of 7ºC and 25ºC for another 24h in water or salicylic acid. Following each treatment, the seeds were transferred to mannitol solutions (0, -0.3, -0.6, and -1.2 MPa) and evaluated after seven days for germination, vigour, shoot and root length, dry mass,...
Palavras-chave: 5.01.00.00-9     Agronomia Phaseolus vulgaris; Thermic shock; Elicitor; Vigour; Protein 5.01.03.00-8    Fitotecnia.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/15967

Population fluctuation of Spodoptera frugiperda eggs and natural parasitism by Trichogramma in maize - doi: 10.4025/actasciagron.v35i3.16769
Provedor de dados: 1
Autores: Bastos Dequech, Sônia Thereza; Universidade Federal de Santa Maria; Camera, Cátia; Universidade Federal de Santa Maria; Sturza, Vinicius Soares; Universidade Federal de Santa Maria; Ribeiro, Leandro do Prado; Universidade de São Paulo; Querino, Ranyse Barbosa; Empresa Brasileira de Pesquisa Agropecuária; Poncio, Sônia; Universidade Federal de Santa Maria.
This study aimed to evaluate the fluctuation of S. frugiperda eggs and natural parasitism by Trichogramma and identify and quantify parasitoid species in maize fields in the state of Rio Grande do Sul, Brazil. Surveys were carried out in two growing seasons: in 2006/2007 we assessed one growing season (late sowing) in Santa   Maria, and in 2007/2008 we assessed two growing seasons (early and late sowing) in Santa Bárbara do Sul. Daily air temperature and rainfall were recorded at both locations. In each evaluation, entire plants were examined for the presence or absence of S. frugiperda egg masses, which were analyzed for larvae hatching or parasitoid emergence. The number of S. frugiperda eggs is higher between 8 and 30 days after plant emergence,...
Palavras-chave: Agronomia; Fitossanidade biological control; Fall armyworm; Noctuidae; Trichogrammatidae; Zea mays L. entomologia agrícola.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/16769

Bromatological composition of sorghum, millet plant and midget-guandu at different cut times in intercropping and monoculture - doi: 10.4025/actasciagron.v35i2.15772
Provedor de dados: 1
Autores: Tiritan, Carlos Sérgio; Universidade do Oeste Paulista; Santos, Diego Henriques; Universidade Estadual Paulista - Unesp / Faculdade de Ciências Agronomicas / Botucatu - SP; Minutti, Cláudia Regina; Foloni, José Salvador Simoneti; Centro Nacional de Pesquisa de Soja, Empresa Brasileira de Pesquisa Agropecuária; Calonego, Juliano Carlos; Universidade do Oeste Paulista.
To determine the chemical composition of intercropping and monoculture cultivars of sorghum, millet and midget-guandu, we determined the production of dry matter (DM), ashes, gross fiber, ethereal extract, gross protein (GP), nutritious digestive total, and extractive without oxygen. The experimental design used was completely random blocks with four repetitions split into 18 treatments: monoculture sorghum, monoculture midget-guandu, monoculture millet, intercropping sorghum and midget-guandu, millet and midget-guandu and millet and sorghum, with cutting times at 30, 60 and 90 days after sowing (DAS). Millet had the highest production of dry biomass at 30 and 60 DAS in monoculture and intercropping. The highest DM was obtained by intercropping (90 DAS)....
Palavras-chave: Consortium of cultures; Productivity; Legume; Grass consortium of cultures; Productivity; Legume; Grass.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/15772

Emergence of Rottboellia exaltata influenced by sowing depth, amount of sugarcane straw on the soil surface, and residual herbicide use - doi: 10.4025/actasciagron.v35i2.16086
Provedor de dados: 1
Autores: Correia, Núbia Maria; Universidade Estadual Paulista “Julio de Mesquita Filho”; Gomes, Leonardo José Petean; Universidade Estadual Paulista “Julio de Mesquita Filho”; Perussi, Fábio José; Universidade Estadual Paulista “Julio de Mesquita Filho”.
Mechanical sugarcane harvest without burning and continuous straw on the soil surface may affect the Rottboellia exaltata infestation dynamics in sugarcane fields. Three greenhouse experiments were conducted with the aim of studying the effects of sowing depth (0, 2.5, 5, 7.5, and 10 cm), amount of sugarcane straw on the soil surface (0, 5, 10, and 15 ton ha-1), and residual herbicide (clomazone, flumioxazin, imazapyr, isoxaflutole, and s-metolachlor) on the emergence of Rottboellia exaltata. For each experiment, a completely randomized design with four replicates was applied. The combination of mulch on soil surface (especially with larger amounts of straw) with deeper sowing depths provides less emergence and mass accumulation of R. exaltata. In bare...
Palavras-chave: 5.01.00.00-9  5.01.03.07-5 itchgrass; Mulch; Herbicide retention; Weed dynamics Matologia itchgrass; Mulch; Herbicide retention; Weed dynamics.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/16086

Characterizing zinc use efficiency in varieties of Arabica coffee - doi: 10.4025/actasciagron.v35i3.16322
Provedor de dados: 1
Autores: Pedrosa, Adriene Woods; Universidade de São Paulo; Prieto Martinez, Herminia Emilia; Universidade Federal de Viçosa; Cruz, Cosme Damião; Universidade Federal de Viçosa; DaMata, Fábio Murilo; Universidade Federal de Viçosa; Clemente, Junia Maria; Universidade Federal de Viçosa; Paula Neto, Ana; Universidade de São Paulo.
Among micronutrients, zinc (Zn) is important for coffee tree cultivation, especially in the clayey acid soils of Brazil’s southeast region, where coffee production is an important activity. This study aimed to evaluate the Zn use efficiency of coffee tree varieties using two zinc concentrations. Seedlings of 11 varieties of coffee trees were grown in a greenhouse in nutrient solution containing either 0.0 or 6.0 µmol L-1 of Zn. After eight months, we evaluated the total biomass production, leaf biomass production, concentration of Zn in the plant organs, absorption efficiency, and Zn use efficiency. All characteristics were affected by the Zn concentration. The biomass production of apical leaves was most affected by the Zn treatments, with high...
Tipo: Pesquisa baseada em experimentação
Palavras-chave: 5.01.03.06-7 Coffea arabica L.; Micronutrient; Zinc content; Nutritional efficiency Eficiência nutricional Coffea arabica L.; Micronutrient; Zinc content; Nutritional efficiency.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/16322

Allelopathy in five species of Erythroxylum  doi: 10.4025/actasciagron.v35i3.16016
Provedor de dados: 1
Autores: Dutra Taveira, Leila Kelly Pereira; Universidade Regional do Cariri; Silva, Maria Arlene Pessoa; Universidade Regional do Cariri; Loiola, Maria Iracema Bezerra; Universidade Federal do Ceará.
The objective of this study was to determine the allelopathic potential of Erythroxylum rosuliferum O.E. Schulz; Erythroxylum stipulosum; Erythroxylum cuneifolium (Mart) O.E. Schulz; Erythroxylum vacciniifolium Mart. and Erythroxylum barbatum O.E. Schulz. Bioassays were performed to examine the seed germination and initial growth of seedlings of Lycopersicum esculentum Mill (tomato) and Allium cepa L. (onion) in Petri dishes following exposure to an ethanolic extract of fresh leaves from the test species at various concentrations. The growth of the tomato and onion seedlings was inhibited with the extracts of the species tested, and significant alterations in the development of the shoots and primary roots were observed. These results suggest that the five...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fisiologia Vegetal allelopathic properties; Germination; Development of seedlings; Cerrado; Chapada do Araripe Alelopatia.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/16016

Leaf carbohydrates in ‘Ponkan’ mandarin fruit quality under chemical thinning - doi: 10.4025/actasciagron.v35i3.16219
Provedor de dados: 1
Autores: Moreira, Rodrigo Amato; Universidade Federal de Lavras; Ramos, José Darlan; Universidade Federal de Lavras; Cruz, Maria do Céu Monteiro da; Universidade Federal dos Vales Jequitinhonha e Mucuri; Pantoja, Lílian de Araújo; Universidade Federal dos Vales Jequitinhonha e Mucuri; Santos, Alexandre Soares dos; Universidade Federal dos Vales Jequitinhonha e Mucuri.
This study was performed to verify the influence of the levels of leaf carbohydrates on the fruit quality of ‘Ponkan’ mandarin trees subjected to chemical thinning for three years using different Ethephon concentrations. Five concentrations of Ethephon were tested: 0, 200, 400, 600 and 800 mg L-1, which were applied during the stage of fruit development when fruits were from 25 to 30 mm in transverse diameter. The experimental design was in randomized blocks, with four blocks and four plants per plot. Interactions were observed between the concentrations of Ethephon and the year of assessment for the percentage of thinning, transverse diameter, longitudinal diameter, mass, soluble solids, acidity and the ratio of fruits. For the contents of carbohydrates,...
Tipo: Pesquisa Empírica de Campo
Palavras-chave: 5.01.03.00-8 Citrus reticulata Blanco; Ethylene; Growth regulators Fitotecnia.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/16219

Functional and numerical responses and reproduction of Campoletis flavicincta parasitizing Spodoptera frugiperda caterpillars - doi: 10.4025/actasciagron.v35i4.15871
Provedor de dados: 1
Autores: Zanuncio, José Cola; Universidade Federal de Viçosa; Matos Neto, Fausto da Costa; Universidade Federal de Viçosa; Tavares, Wagner de Souza; Universidade Federal de Viçosa; Cruz, Ivan; Embrapa Milho e Sorgo; Leite, Germano Leão Demolin; Universidade Federal de Minas Gerais; Serrão, José Eduardo; Universidade Federal de Viçosa.
The functional and numerical responses, reproductive characteristics, and viability of Campoletis flavicincta (Hymenoptera: Ichneumonidae) as well as the mortality after parasitism of the host Spodoptera frugiperda (Lepidoptera: Noctuidae) were analyzed in the laboratory. Campoletis flavicincta pairs were maintained until female death with 10, 20, 30, 40, or 50 caterpillars day-1 of the host S. frugiperda. A type III functional response curve was fitted to the average number of caterpillars supplied per day during the female wasp lifespan, as the explanatory variable. The handling time was 0.5940 ± 0.0875h, and the instantaneous search 0.0047 ± 0.0020 h-1. The functional response for each of the first five days of the host was a type III. The longevity at...
Palavras-chave: 5.01.02.02-8 fall armyworm; Functional response; Host density; Numerical response; Parasitism; Parasitoid age Entomologia Agrícola.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/15871

Efficiency of the leaf disc method for estimating the leaf area index of soybean plants - doi: 10.4025/actasciagron.v35i4.16290
Provedor de dados: 1
Autores: Pierozan Junior, Clovis; Escola Superior de Agricultura "Luiz de Queiroz"; Kawakami, Jackson; Universidade Estadual do Centro-Oeste.
The objective of this study was to evaluate the efficiency of the leaf disc method for estimating the leaf area index (LAI) of soybean plants in comparison with the digital photo method. A split-plot experimental design was used with three replications. The LAIs calculated by the leaf disc and digital photo methods were compared at four growth stages in four soybean cultivars (subplot). These soybean cultivars were sowed in Guarapuava, Paraná State, Brazil, at three different sowing dates (main plot) in the 2010/2011 growing season. Regression analysis was used for each group of samples, and the efficiency of the leaf disc method was evaluated on the basis of the coefficient of determination (R²), the calculated F and the intersection and abscissa errors....
Tipo: Pesquisa Empírica de Campo
Palavras-chave: Ciências Agrárias; Agronomia; Glycine max; Cultivars; Digital photos; Growth stages; Sowing dates Fitotecnia.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/16290

Culture systems in the production and quality of strawberry cultivars - doi: 10.4025/actasciagron.v35i4.16552
Provedor de dados: 1
Autores: Cecatto, Ana Paula; Universidade de Passo Fundo; Calvete, Eunice Oliveira; Universidade de Passo Fundo; Nienow, Alexandre Augusto; Universidade de Passo Fundo; Costa, Rosiani Castoldi da; Universidade de Passo Fundo; Mendonça, Heloisa Ferro Constâncio; Universidade de Passo Fundo; Pazzinato, Aislam Celso; Universidade de Passo Fundo.
Until recently, strawberry cultivation was exclusively performed in soil using conventional cultivation methods, which resulted in many environmental and phytosanitary problems. Currently, soilless culture is the production method advocated for environmental reasons because it greatly reduces the use of chemical pesticide and fungicide inputs. This study assessed the yield and quality of fruits from strawberry cultivars grown in two systems (soil and substrate) in a greenhouse. The experiment was performed from September 2010 to January 2011 in the University of Passo Fundo, Rio Grande do Sul State. Treatments (cultivars x culture systems) were arranged in a random block design with a 7 x 2 factorial arrangement. Evaluation included number, total and...
Palavras-chave: 5.01.03.00-8 Fragaria X ananassa Duch.; Soil culture; Substrate culture Fitotecnia Fitotecnia.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/16552

Woolliness and leatheriness in late peach cultivars submitted to both delayed storage and to cold storage - doi: 10.4025/actasciagron.v35i3.13347
Provedor de dados: 1
Autores: Neves, Leandro Camargo; Universidade Federal de Roraima; Campos, Andre José de; Universidade Federal de Roraima; Prill, Marcos André de Souza; Universidade Federal de Roraima; Roberto, Sérgio Ruffo; Universidade Estadual de Londrina.
The study was performed to identify the effect of delayed storage on the control of woolliness and leatheriness during cold storage of the late peach cultivars grown in Brazil. The fruits were harvested at the mature-green stage. All of the cultivars were exposed to temperatures of 20 ± 0.5ºC and 75 ± 3% of R.H. in a cold room for 0, 24, or 48 hours. Afterwards, the fruits were kept at 0 ± 0.5ºC and 92 ± 3% of R.H. for 28 days. The yellow pulp peaches, regardless of the length of delayed storage, did not present any symptoms of woolliness or leatheriness. The white pulp peaches not submitted to delayed storage developed either one or more of the other physiological disorders. Due to their lower level of pulp firmness, the control fruits of ‘Chimarrita’ and...
Palavras-chave: Prunus sp.; Chilling injury; Physiologic disturbances; Quality; Postharvest.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/13347

Use of phytoregulators in overcoming macaw palm seed dormancy - doi: 10.4025/actasciagron.v35i4.16385
Provedor de dados: 1
Autores: Oliveira, Túlio Gabriel Soares; Universidade Federal de Lavras - UFLA; Rodrigues Junior, Ailton Gonçalves; Universidade Federal de Lavras - UFLA; Souza, Patrícia Pereira de; Universidade Federal de Viçosa - UFV; Ribeiro, Leonardo Monteiro; Universidade Estadual de Montes Claros - Unimontes.
The macaw palm is a tropical palm with significant potential for biofuel production; however, seed dormancy is a major factor limiting its agro-industrial use. The present study evaluated the effects of phytoregulators in overcoming macaw palm seed dormancy. We evaluated the effects of immersion in solutions of gibberellic acid (GA3) (0, 2000 and 5000 mg L-1) during two exposure times (24 and 48 hours), associated with the removal or maintenance of the opercular tegument, as well as the effects of the associations between GA3 (2000 mg L-1), indole-3-butyric acid (IBA) and benzylaminopurine (BAP) and the effects of repeated applications (one, two or five) of combinations of these phytoregulators. The seeds were sown in vermiculite and incubated in a humid...
Palavras-chave: 5.00.00.00-4; 5.01.03.00-8 Acrocomia aculeata; Germination; GA3; IBA; BAP; Arecaceae Ciências Agrárias; Fitotecnia.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/16385

Dehydrated citrus pulp digestibility and the effect of its inclusion in diet on the performance of growing rabbits - doi: 10.4025/actascianimsci.v35i1.12359
Provedor de dados: 2
Autores: Maria, Bruno Giovany; Universidade Estadual de Maringá; Scapinello, Cláudio; Universidade Estadual de Maringá; Oliveira, Andréia Fróes Galuci; Universidade Estadual de Maringá; Monteiro, Ana Carolina; Universidade Estadual de Maringá; Catelan, Fernanda; Universidade Estadual de Maringá; Figueira, Josianny Limeira; Universidade Estadual de Maringá.
Several experiments were conducted to determine the digestibility of dehydrated citrus pulp (DCP) and evaluate its effect on rabbit feed. Digestibility assay comprised 30 rabbits fed on two diets: a reference diet and a diet in which 20% consisted of DCP. The digestibility assay comprised 10 days for adaptation and four days for feces collection. The digestibility coefficient and digestible nutrient rates for DM, CP, NDF, ADF, and CE of DCP were respectively 83.75 and 76.04%; 70.12 and 5.03%; 40.14 and 9.52%; 68.98 and 15.09%; and 81.48% and 3394 kcalDE kg-1 DM. Performance assay consisted of 120 growing rabbits receiving diets with six DCP levels (0, 20, 40, 60, 80 and 100%) to replace corn. Linear decrease (p &amp;lt; 0.01) in daily feed intake and...
Tipo: Ensaio de digestibilidade; análise laboratorial; análise de desempenho
Palavras-chave: 5.04.05.00-4 carcaça; Rendimento; Nutriente; Fibra digestível; Pectina carcass; Yield; Nutrient; Digestible fiber; Pectin.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/12359

Effect of strain, sex and age on carcass parameters of broilers - doi: 10.4025/actascianimsci.v35i1.13354
Provedor de dados: 2
Autores: Fernandes, Jovanir Inês Müller; Universidade Federal do Paraná; Bortoluzzi, Cristiano; Universidade Federal do Paraná; Triques, Gustavo Eugenio; Universidade Federal do Paraná; Garcez Neto, Americo Fores; Universidade Federal do Paraná; Peiter, Daniela Cristina; Universidade Federal do Paraná.
A total of 1,080 one-day-old broiler chicks were used, distributed into a completely randomized design in a 6 x 2 x 4 factorial scheme, with six replications of 30 birds each (15 males and 15 females). Chicks were classified into six breeds (Cobb 500 Slow, Cobb Fast, Ross 308, Ross 508, Hybro Plus and Avian 48), male or female and four slaughter ages (43, 45, 46 and 49 days). Ten birds from each experimental unit (5 males and 5 females) were slaughtered to evaluate carcass yield and commercial cuts. Cobb 500 Slow males showed the maximum potential for weight gain at 47 days old, while the other breeds, between 33 and 35 days old, regardless of sex. Carcass and breast fillet yield showed significant differences, independent of breed, sex and slaughter age,...
Tipo: Fielwork
Palavras-chave: Produção Animal – 5.04.05.00-4 breeding; Poultry; Breast yield; Leg yield.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/13354

Forage intake and behavior of goats on Tanzania-grass pasture at two regrowth ages - doi: 10.4025/actascianimsci.v35i1.16035
Provedor de dados: 2
Autores: Rodrigues, Marcônio Martins; Universidade Federal do Piauí; Oliveira, Maria Elizabete de; Universidade Federal do Piauí; Moura, Raniel Lustosa de; Universidade Federal do Piauí; Rufino, Marcelo de Oliveira Alves; Universidade Federal do Piauí; Silva, Wellington Kelson Alvarenga; Universidade Federal do Ceará; Nascimento, Maria do Perpétuo Socorro Cortez Bona; Universidade Federal do Piauí.
The forage mass, sward structure, the ingestive and grazing behavior and forage intake by goats grazing on Tanzania-grass at 22 and 37 days of regrowth were evaluated. A completely randomized experimental design was used, with eight replications for evaluating the pasture and bite depth, and six replications for evaluating intake, feeding and grazing behavior. The forage canopy height ranged from 64.1 to 92.7 cm. Higher forage mass was observed at 37 days, and the best leaf/stem ratio, at 22 regrowth days. The bite depth did not differ between regrowth ages. The biting rate for the 22 regrowth days (23.07 bites min.-1) was higher than at 37 days (19.06 bites min.-1). The grazing time was longer at the regrowth age of 22 days (5.58h) than at 37 days...
Tipo: PESQUISA DE CAMPO
Palavras-chave: Ciências Agrárias grazing; Bite depth; Leaf/stem ratio; Biting rate grazing; Bite depth; Leaf/stem ratio; Biting rate.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/16035

Dietary lipid sources affect freshwater catfish jundiá, Rhamdia quelen, survival, when challenged with Aeromonas hydrophila - doi: 10.4025/actascianimsci.v35i4.19617
Provedor de dados: 2
Autores: Vargas, Rodrigo Javier; Universidade Federal de Santa Catarina (UFSC); Dotta, Geovana; Universidade Federal de Santa Catarina (UFSC); Mouriño, José Luiz; Universidade Federal de Santa Catarina (UFSC); Silva, Bruno Correia da; Universidade Federal de Santa Catarina (UFSC); Fracalossi, Débora Machado; Universidade Federal de Santa Catarina (UFSC).
The immune modulatory activity of diet long chain polyunsaturated fatty acids in fish has been previously demonstrated, although results for freshwater species are controversial.  This study evaluates the effect of different dietary lipids on freshwater catfish jundiá, Rhamdia quelen, survival and its non-specific response (phagocytosis) after being inoculated with the pathogen  Aeromonas hydrophila. Five diets were offered to jundiá fingerlings during 150 days prior to challenge: cod liver oil (FO), sunflower oil (SO), linseed oil (LO), canola oil (CO) and coconut oil (CNO). Accumulated mortality was significantly lower in fish fed FO and CNO diets and higher in fish fed LO. In spite of the highest values observed for phagocytotic activity in CNO-fed fish...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.06.03.00-0 mortality; Phagocytosis; Oils; Immune response Mortality; Phagocytosis; Oils; Immune response.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/19617

Bee pollen supplementation in diets for rabbit does and growing rabbits - doi: 10.4025/actascianimsci.v35i4.18950
Provedor de dados: 2
Autores: Dias, Daisa Mirelle Borges; Universidade de Rio Verde; Oliveira, Maria Cristina de; Universidade de Rio Verde; Silva, Diones Montes da; Universidade de Rio Verde; Bonifácio, Nadielli Pereira; Universidade de Rio Verde; Claro, Daniel da Cunha; Universidade de Rio Verde; Marchesin, Wilson Aparecido; Cooperativa Agroindustrial dos Produtos Rurais do Sudoeste Goiano.
It was evaluated the effects of bee pollen (BP) on the doe and kits productivity and on the carcass and organs of the rabbits. Twenty White New Zealand does and their kits were used in a randomized block design, with four treatments and five blocks, in a factorial arrangement 2 x 2 with two supplementation levels for the doe and for the kits after the weaning. BP supplementation for the does did not influence (p &amp;gt; 0.05) the doe and kit productivity during the lactation, except by the kits survival rate (p &amp;lt; 0.003), the total (p &amp;lt; 0.002) and daily (p &amp;lt; 0.001) milk production that increased in supplemented doe. BP supplementation for the doe and/or kits did not affect (p &amp;gt; 0.05) the rabbit performance from the weaning until...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alimentary additive; Rabbit nutrition; Bee product Alimentary additive; Rabbit nutrition; Bee product.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/18950

Colostrum silage: fermentative, microbiological and nutritional dynamics of colostrum fermented under anaerobic conditions at different temperatures - doi: 10.4025/actascianimsci.v35i4.19870
Provedor de dados: 2
Autores: Ferreira, Lucas Silveira; Universidade de São Paulo; Silva, Jackeline Thais; Universidade de São Paulo; Paula, Marília Ribeiro de; Universidade de São Paulo; Soares, Marcelo Cesar; Universidade de São Paulo; Bittar, Carla Maris Machado; Universidade de São Paulo.
The fermentative, microbiological and nutritional dynamics of bovine colostrum fermented under anaerobic conditions at different temperatures is provided. Colostrum was homogenized and stored in PET bottles in anaerobic conditions and incubated at controlled temperature (32.5 ± 1°C or 22.5 ± 1°C) or at room temperature (17.4 - 21.5ºC) and opened after 0, 1, 7, 14, 21, 28 and 35 days to determine fermentative and nutritional parameters and bacteria, yeast and mold counts. Further, pH rates showed significant variations during the fermentation period (p &amp;lt; 0.0001), with colostrum stored at 32.5°C, exhibiting the lowest rates and significant reduction during the first days. Titratable acidity and lactic acid concentration showed increasing rates and LAB...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dairy calves; Feed quality; Liquid diet; Milk replacer dairy Calves; Feed quality; Liquid diet; Milk replacer.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/19870

Microclimate without shade and silvopastoral system during summer and winter - doi: 10.4025/actascianimsci.v35i1.15155
Provedor de dados: 2
Autores: Baliscei, Marcio Antonio; Instituto Paranaense de Assistência Técnica e Extensão Rural; Barbosa, Orlando Rus; Programa de Pós-Graduação em Zootecnia da Universidade Estadual de Maringá, Av. Colombo, 57020-900. Maringá Paraná Brasil; Souza, Wander de; Instituto Paranaense de Assistência Técnica e Extensão Rural; Costa, Marco Aurelio Teixeira; Universidade Estadual de Maringá; Krutzman, Alexandre; Universidade Estadual de Maringá; Queiroz, Edicarlos Oliveira; Universidade Estadual de Maringá,.
This study evaluated the microclimate in a system without shade (WS) and in a silvopastoral system (SP) with eucalyptus during summer and winter, by measuring the air temperature (Ta), black globe temperature (Tg), relative humidity (RH), wind speed (Ws), every 2 hours for 24 hours between rows, shade (SP) and no shade effect (WS). It was employed the randomized blocks design (months), in the plots (systems), subplots (hours) and sub-subplots (seasons). Except for Ta and RH, the Tg (24.73, 26.41ºC), Ws (3.16, 4.57 m s-1), Black globe-humidity index (BGHI) (71.83, 73.84), Thermal load index (TLI) (74.53, 76.11) and Radiant thermal load (RTL) (526.46, 595.80 W m-2), respectively for SP and WS, were higher in WS. Ta, RH and Ws had a quadratic effect of hour....
Tipo: Pesquisqa de campo
Palavras-chave: Thermal comfort; Seasons; Index; Silvopastoral; Shade thermal comfort; Seasons; Index; Silvopastoral; Shade.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/15155

Growth curves of Nile tilapia (Oreochromis niloticus) strains cultivated at different temperatures - doi: 10.4025/actascianimsci.v35i3.19443
Provedor de dados: 2
Autores: Santos, Vander Bruno; Apta -Agencia de Tecnologia dos Agronegócios; Mareco, Edson Assunção; Universidade Estadual Paulista; Silva, Maeli Dal Pai; Instituto de Biociências, UNESP. Botucatu.
Growth of Red, GIFT and Supreme Nile tilapia strains were evaluated. Fish were cultivated in indoor recirculation systems in 0.5 m³ tanks with controlled temperatures of 22, 28 and 30°C. Random samples of 20 fish from each strain (10 fish tank-1) were weighed at day 7, 30, 60, 90 and 120. Exponential model (y=AeKx) and Gompertz model (y = Aexp(-Be-Kx)) were fitted and the estimates parameters were obtained by Weighted Least Squares. At 22°C, Red, GIFT and Supreme strain presented similar growth and fit of exponential model. GIFT and Supreme strain presented higher growth rate at 30°C of cultivation when compared to Red strain. Temperature influences weight and age at the inflection point. The temperature of cultivation influences the growth description of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 50603000 exponential model; Growth rate; Supreme; GIFT; Red tilapia; Weighted model Exponential model; Growth rate; Supreme; GIFT; Red tilapia; Weighted model.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/19443

Growth performance and digestibility of juvenile Nile tilapia fed diets containing acid silage viscera of surubim catfish - doi: 10.4025/actascianimsci.v35i1.14470
Provedor de dados: 2
Autores: Hisano, Hamilton; Embrapa Agropecuária Oeste; Pietro, Pamela Souza de; Universidade Federal da Grande Dourados.
This study aimed to evaluate increasing levels (0, 4, 8 and 12%) of acid silage viscera of surubim catfish as an alternative protein source on growth performance and apparent digestibility coefficients (ADC) for Nile tilapia. Weight gain (WG), feed intake (FI), feed conversion ratio (FCR), and protein efficiency ratio (PER) were evaluated. The digestibility for dry matter (DM), crude protein (CP), ether extract (EE), gross energy (GE) and availability of phosphorus (P) were also assessed. The experimental design was completely randomized with four treatments and four repetitions. The results indicated no difference (p &amp;gt; 0.05) for growth performance parameters. The ADC of CP of treatment containing 8% of silage was lower (p &amp;lt; 0.05) when...
Palavras-chave: Aquicultura e recursos pesqueiros aquaculture; By-product; Protein source.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/14470

Reutilization of chemical waste in methodologies for analyses of neutral detergent fiber and acid detergent fiber - doi: 10.4025/actascianimsci.v35i3.18591
Provedor de dados: 2
Autores: Lourenço, Maria do Socorro Nahuz; Universidade Estadual do Maranhão; Berchielli, Telma Teresinha; Universidade Estadual Paulista “Júlio de Mesquita Filho"; Sader, Ana Paula de Oliveira; Universidade Estadual Paulista “Júlio de Mesquita Filho"; Malheiros, Euclides Braga; Universidade Estadual Paulista “Júlio de Mesquita Filho"; Messana, Juliana Duarte; Universidade Estadual Paulista “Júlio de Mesquita Filho"; Canesin, Roberta Carrilho; Universidade Estadual Paulista “Júlio de Mesquita Filho".
The disposal of chemical waste and the precision of analyses of the neutral (NDF) and acid (ADF) detergent fiber contents were evaluated utilizing conventional (Van Soest) and alternative methods of analyses. The recovery of acetone promoted both economic and environmental gains, with a recovery rate of 84.12%. The precision of the analyses was not observed in most of the determinations with reutilization of chemical waste in all the analytical methods tested, in spite of promoting decrease in cost, time invested in the preparation of solutions and the disposal of chemical waste.   
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.03.00-1 animal nutrition; Chemical analysis; Sustainability.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/18591

Comparison of selection indexes for dairy goats in the tropics - doi: 10.4025/actascianimsci.v35i3.16049
Provedor de dados: 2
Autores: Lopes, Fernando Brito; Universidade Federal de Goiás; Silva, Marcelo Corrêa da; Universidade Federal de Goiás; Fioravanti, Maria Clorinda Soares; Universidade Federal de Goiás; Facó, Olivardo; Empresa Brasileira de Pesquisa Agropecuária; McManus, Concepta; Universidade Federal do Rio Grande do Sul.
The selection process in dairy goat was evaluated by selection indexes. Basal population of 1,000 does, randomly mated by 50 unselected and unrelated bucks, was simulated. Eight selection indexes in two production systems (intensive - indexes I-IV and semi-intensive - indexes V-XIII) were compared. Three groups of dairy goats (A, B and C) were simulated with a respective intensity of 10, 25 and 50%. Each group was composed of five generations and each generation was replicated 20 times. All traits were simulated using matrices of direct additive genetic and the residual (co)variance and the effect of Mendelian segregation. Statistical analyses were performed by repeated measurements in time. Selection using the suggested indexes improved all traits....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.02.00-5 first calving; Milk; Breeding goals; Selection criteria; Total solids.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/16049

Feedlot performance, carcass characteristics and meat quality of Nellore and Canchim bulls fed diets supplemented with vitamins D and E - doi: 10.4025/actascianimsci.v35i4.18801
Provedor de dados: 2
Autores: Baldin, Samira Rodrigues; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Millen, Danilo Domingues; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Martins, Cyntia Ludovico; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Pereira, Angélica Simone Cravo; Universidade de São Paulo; Barducci, Robson Sfaciotti; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Arrigoni, Mário De Beni; Universidade Estadual Paulista “Júlio de Mesquita Filho”.
This experiment was conducted at Unesp feedlot facility, campus of Botucatu, and aimed to evaluate the supplementation of D and E vitamins on animal performance, carcass characteristics and meat quality of yearling bulls finished in feedlot. Thirty-six 7-mo-old yearling bulls, 18 Nellore (NEL) and 18 Canchim (CAC), with average initial body weight of 234.53 ± 22.15 and 248.13 ± 34.67 kg, respectively, were fed for 126 days. Nine NEL and nine CAC yearling bulls were daily supplemented with 1300 IU of vitamin E and 7.5 x 106 IU of vitamin D3 for 67 days and 10 days before slaughter, respectively. One day before slaughter, blood samples were collected for evaluation of Ca concentration. After chilling, Longissimus muscle (LM) samples were collected for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.03.00-1; 5.04.03.02-8; 5.04.05.00-4 calcium; Color; PH; Tenderness Nellore; Calcium; Color; PH: Tenderness.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/18801

Manure production and mineral excretion in feces of gilts fed ractopamine - doi: 10.4025/actascianimsci.v35i3.18662
Provedor de dados: 2
Autores: Watanabe, Pedro Henrique; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Thomaz, Maria Cristina; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Pascoal, Leonardo Augusto Fonseca; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Ruiz, Urbano dos Santos; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Daniel, Everton; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Amorim, Alessandro Borges; Universidade Estadual Paulista “Júlio de Mesquita Filho”.
A study was conducted to evaluate the feces+urine produced per animal (FUPA), dry matter, mineral matter, organic matter, nitrogen, phosphorus, potassium and sulfur in feces of gilts fed diets with increasing levels of ractopamine (0, 5, 10 and 15 mg kg-1 of diet). A total of 468 finishing gilts were allotted into 36 pens. In two days of each week, feces and urine were daily sampled in four pens per treatment, quantifying the feces+urine. To determine the characterization of feces, two samples per week were taken daily, in nine pens per treatment. It was used a split plot design, considering the ractopamine level as the plot and the weeks as the subplots. There was no reduction in nitrogen amount in feces. An interaction was detected between ractopamine...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nutrição animal; Nutrição de não-ruminantes; Additive; Environmental impact; Finishing; Mineral; Sus scrofa Additive; Environmental impact; Finishing; Mineral: Sus scrofa.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/18662

Agronomic characteristics of forage sorghum cultivars for silage production in the lower middle San Francisco Valley - doi: 10.4025/actascianimsci.v35i1.13072
Provedor de dados: 2
Autores: Santos, Rafael Dantas dos; Empresa Brasileira de Pesquisa Agropecuária (Embrapa Semiárido); Pereira, Luiz Gustavo Ribeiro; Empresa Brasileira de Pesquisa Agropecuária (Gado de Leite); Neves, André Luis Alves; Empresa Brasileira de Pesquisa Agropecuária (Gado de Leite); Rodrigues, José Avelino Santos; Empresa Brasileira de Pesquisa Agropecuária (Milho e Sorgo); Costa, Cleber Thiago Ferreira; Universidade Federal Rural de Pernambuco; Oliveira, Getúlio Figueiredo de; Universidade Federal de Sergipe.
Productive performance for silage production of five forage sorghum genotypes (BRS Ponta Negra, BRS 655, BR 601, BRS 506 and BRS 610) was evaluated through the yield of dry matter, digestible dry matter, and fresh matter, plant height, percentage of lodged and broken plants, and anatomical fractions in Brazilian semi-arid region. BRS 506 and BRS Ponta Negra varieties achieved the highest fresh forage yields (89.4 and 76.2 ton. ha-1), and BRS 506, stood out for dry and digestible dry matter yield (25.2 and 12.1 ton. ha-1, respectively). Regarding the participation of the plant fractions, BRS 655 and BRS 610 genotypes showed a higher percentage of panicles (50.2 and 41.0% respectively), while BRS 506 stressed out the stem participation (84.6%), and BRS Ponta...
Tipo: Pesquisa de campo
Palavras-chave: 5.04.04.00-8; 5.04.04.01-6; 5.04.05.00-4 fforage; Dry matter; Nutrition; Ruminants; Sorghum bicolor (L.) Moench.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/13072

Effect of nutritional density and season on the performance of young rabbit does before the first mating - doi: 10.4025/actascianimsci.v35i4.19101
Provedor de dados: 2
Autores: Teixeira, Paulo Sergio dos Santos; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Wechsler, Francisco Stefano; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Moura, Ana Silvia Alves Meira Tavares; Universidade Estadual Paulista “Júlio de Mesquita Filho”.
The objective was to evaluate the effect of nutritional density and season on the performance of young rabbit does before the first mating. Forty-eight females from the Botucatu Genetic Group were used in each season (warm or cool), starting at the age of 70 days, housed in groups of four per cage up to 119 days, and reared individually from 120 to 140 days of age. The high-density diet was formulated to contain, on a 90% DM basis, 18.4% CP, 16.5% ADF and 2,500 kcal DE kg-1; whereas the low-density diet was formulated to contain 14.7% CP, 24% ADF and 2,000 kcal DE kg-1. The experiment was conducted according to a 2x2 factorial design (two diets x two seasons) with repeated measures (weeks). The high-density diet promoted lower feed intake, higher final...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.03.00-1 acid detergent fiber; Feed efficiency; Feed intake; Growth; Live weight; Nutrition acid detergent fiber; Feed efficiency; Feed intake; Growth; Live weight; Nutrition.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/19101

Growth performance and intestinal histomorphology of Nile tilapia juveniles fed probiotics - doi: 10.4025/actascianimsci.v35i4.18610
Provedor de dados: 2
Autores: Nakandakare, Ivan Bernardoni; Instituto de Pesca, Agência Paulista de Tecnologia dos Agronegócios; Iwashita, Marina Keiko Pieroni; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Dias, Danielle de Carla; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Tachibana, Leonardo; Instituto de Pesca, Agência Paulista de Tecnologia dos Agronegócios; Ranzani-Paiva, Maria José Tavares; Instituto de Pesca, Agência Paulista de Tecnologia dos Agronegócios; Romagosa, Elizabeth; APTA - São Paulo.
The objective of this study was to assess the growth performance and the histomorphometric characterization of the middle intestine of GIFT strain Nile tilapia, Oreochromis niloticus juveniles fed probiotics, added either before or after the feed processing. The experimental design was completely randomized, with five treatments and five replications: pelleted feed without any probiotic; pelleted feed with inclusion of probiotic before the processing; pelleted feed with inclusion of probiotic after the processing; extruded feed without any probiotic and extruded feed with inclusion of probiotic after the processing. Two hundred and fifty juveniles were distributed in 25 aquaria (20L) and fed for 63 days. Differences in the mean values of total weight were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nutrição; Probiotico; Morfologia intestino; Tilápia Bacillus; Intestine; Feed processing; Supplement Bacillus; Intestine; Feed processing; Supplement.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/18610

Direct and indirect effects of measures and reasons morphometric on the body yield of Nile tilapia, Oreochromis niloticus - doi: 10.4025/actascianimsci.v35i4.19807
Provedor de dados: 2
Autores: Melo, Carlos Cicinato Vieira; Universidade Federal de Lavras; Reis Neto, Rafael Vilhena; Universidade Federal de Lavras; Costa, Adriano Carvalho; Universidade Federal de Lavras; Freitas, Rilke Tadeu Fonseca de; Universidade Federal de Lavras; Freato, Thiago Archangelo; Empresa de Pesquisa Agropecuária de Minas Gerais; Souza, Ulisses Nascimento de; Universidade Federal de Lavras.
The study was carried out with the objective of verifying which measures and morphometric ratios are more directly related to the body yield of Nile tilapia, Oreochromis niloticus, in two weight classes. Data were analyzed from 257 specimens of tilapia divided into two weight classes: p1 = 400 to 599  g and p2 = 600 to 900 g. The morphometric measurements standard length (SL), head length (HL), body height (BH) and body width (BW), and the ratios of these measures (HL / SL, BH / SL, BW / SL, HL / BH, BW / BH, BW / HL) were evaluated. The following body yields were calculated: carcass (RCAR), fillet (RFILE) and head (RCAB). The data were initially submitted to the "stepwise" procedure to eliminate problems of multicollinearity among the morphometric...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Path analysis; Evaluation of carcass; Animal breeding; Morphometry; Oreochromis niloticus.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/19807

Heat tolerance index, food intake and weight gain of Santa Ines sheep in the agreste region of Pernambuco State, Brazil - doi: 10.4025/actascianimsci.v35i3.18466
Provedor de dados: 2
Autores: Silva Filho, Florisval Protásio; Universidade Federal Rural de Pernambuco; Azevedo, Marcílio de; Universidade Federal Rural de Pernambuco; Costa, Lígia Alexandrina Barros da; Universidade Federal Rural de Pernambuco; Lana, Ângela Maria Quintão; Universidade Federal de Minas Gerais; Ferreira, Marcelo de Andrade; Universidade Federal Rural de Pernambuco; Batista, Ângela Maria Vieira; Universidade Federal Rural de Pernambuco.
This study evaluated the influence of coat color on the heat tolerance and performance of 21 Santa Inês lambs, non-pregnant, non-lactating, seven animals of each coat color: black, brown and white, with an average initial weight of 25.71, 24.85 and 25.00 kg, for white, brown and black animals, respectively, and 12 months of age. The study was conducted during summer in the agreste region of Pernambuco   State, Brazil. Twenty-one sheeps were assigned to a completely randomized design with three treatments and seven replicates. The heat tolerance index and the animal performance were evaluated once a week for eight weeks. White sheep were slightly superior in heat tolerance to brown and black sheep, 88.3, 85.5 and 86.6 respectively, but this was not...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Adaptation; Bioclimatology; Climate; Heat stress.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/18466

Nitrogenous compounds balance and microbial protein synthesis in steers supplemented with sunflower crushed in partial replacement of soybean meal - doi: 10.4025/actascianimsci.v35i3.18654
Provedor de dados: 2
Autores: Lima, Hellen Leles; Universidade Federal da Grande Dourados; Goes, Rafael Henrique de Tonissi e Buschinelli de; Universidade Federal da Grande Dourados; Oliveira, Euclides Reuter de; Universidade Federal da Grande Dourados; Gressler, Maria Gizelma de Menezes; Universidade Federal da Grande Dourados; Brabes, Kelly Cristina da Silva; Universidade Federal da Grande Dourados; Gabriel, Andrea Maria de Araújo; Universidade Federal da Grande Dourados.
Four steers in individual paddocks with Marandu grass (B. Brizantha) in 4x4 square design were used to evaluate sunflower crushed supplementation in pasture-grazing animals on nitrogen balance and microbial protein synthesis. Supplements at 6 g kg-1 body weight comprised corn, soybean meal, and mineral and soybean meal substituted at proportions 0, 20, 40 and 60%. Diet contained averages 6.79, 6.96, 7.10 and 6.87% nitrogen respectively for substitution levels 0, 20, 40 and 60%. The inclusion of sunflower crushed (SC) increased nitrogen intake and fecal excretion of nitrogen while providing a positive balance. Animals’ plasma urea concentration supplemented with SC was 28.13% lower than that of supplemented animals without SC. SC inclusion did not change...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.04.01-6 creatinine; Microbial efficiency; Plasma urea; Purine derivatives; Urea Creatinine; Microbial efficiency; Plasma urea; Purine derivatives; Urea.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/18654

Pollen spectrum of propolis samples from São Paulo State, Brazil - doi: 10.4025/actascianimsci.v35i3.18389
Provedor de dados: 2
Autores: Silva, Cinthia Rio Branco da; Universidade Estadual Paulista; Putarov, Thaila Cristina; Universidade Estadual Paulista; Orsi, Ricardo Oliveira; Universidade Estadual Paulista.
The pollen spectrum of propolis is a good indicative of the phytogeographical origin of the bee product and the local flora available for bee visiting. The present study aimed to perform pollen analysis of propolis produced by Apis mellifera L., in the São Paulo State, Brazil. Propolis samples were directly obtained from beekeepers and slides were prepared for qualitative and quantitative analysis of pollen after propolis extraction. According to the results twenty-eight types of pollen were found and distributed in fifteen botanical families. Pollens from Mimosoideae and Myrtaceae types were found in all samples. In São Paulo State, there is a wide variety of vegetal sources which are components of the final propolis composition.   
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pollen analysis; Apiculture; Botanical diversity.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/18389

Characterization of tillers of piata palisade grass deferred in the fall with varying heights and deferment periods - doi: 10.4025/actascianimsci.v35i1.13021
Provedor de dados: 2
Autores: Vilela, Hélio Henrique; Universidade Federal de Viçosa; Sousa, Braulio Maia de Lana; Universidade Federal de Viçosa; Santos, Manoel Eduardo Rozalino; Universidade Federal de Uberlândia; Santos, Andreza Luzia; Universidade Federal de Viçosa; Silva, Natascha Almeida Marques da; Universidade Federal de Uberlândia; Nascimento Junior, Domicio do; Universidade Federal de Viçosa.
This study was conducted to evaluate the tiller population density and its structural characteristics in Brachiaria brizantha cv. Piata subjected to deferment periods (65, 85 and 105 days) and initial sward heights for deferment (20, 30 and 40 cm). A completely randomized block design was used in a split-plot scheme with three replications. The population density of vegetative basal and total tillers was influenced by the interaction between periods and initial heights of deferment, with lower values in the period of 85 days associated with the initial height of 40 cm and the period of 105 days associated with initial heights of 30 and 40 cm. The length of the stem and leaf blade of vegetative basal tillers increased with the raise in the deferment...
Palavras-chave: Brachiaria brizantha; Pasture management; Structural characteristics; Tillering; Tiller population density.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/13201

Chemical changes in sunflower silage associated with different additives - doi: 10.4025/actascianimsci.v35i1.14049
Provedor de dados: 2
Autores: Goes, Rafael Henrique de Tonissi e Buschinelli de; Universidade Federal da Grande Dourados; Miyagi, Eliane Sayuri; Universidade Federal da Grande Dourados; Oliveira, Euclides Reuter de; Universidade Federal da Grande Dourados; Brabes, Kelly Cristina da Silva; Universidade Federal da Grande Dourados; Patussi, Rosielen Augusto; Universidade Federal da Grande Dourados; Dambrós, Carlos Eduardo; Universidade Federal da Grande Dourados.
Thirty-six experimental silos arranged in a completely randomized 4 x 3 factorial design were provided to evaluate the chemical changes of sunflower silage treated with soybean hulls, sunflower crushed and urea at 14, 21 and 28 days of ensilage. The additives were based on 5% natural matter, whereas control consisted of silage with 100% sunflower plant. OM, NDIP, and MM had average rates 911.2; 86.6 and 92.9 g kg-1 of dry matter respectively. The addition of soybean hulls and sunflower crushed increased DM rates after 28 and 21 days. Urea increased nitrogen fractions and the addition of soybean hulls increased total carbohydrate content of silage by 5.1%, whereas the addition of sunflower crushed decreased the same by 2.18%. NDF, ADF and hemicellulose...
Tipo: Pesquisa
Palavras-chave: 5.04.03.03-6 sunflower crushed; Lignin; NDF; PH; Soybean hulls; Urea.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/14049

Thermal conditioning during the first week on performance, heart morphology and carcass yield of broilers submitted to heat stress - doi: 10.4025/actascianimsci.v35i3.18707
Provedor de dados: 2
Autores: Fernandes, Jovanir Inês Müller; Universidade Federal do Paraná; Scapini, Lidiane Boareto; Universidade Federal do Paraná; Gottardo, Elisangela Thaísa; Universidade Federal do Paraná; Burin Junior, Alvaro Mário; Universidade Federal do Paraná; Marques, Felipe Eduardo dos Santos; Universidade Federal do Paraná; Gruchouskei, Leonardo; Universidade Federal do Paraná.
This study aimed to assess the influence of thermal conditioning during the first week, and to verify the effect of this, upon the heat challenge by the end of the productive period on performance, heart morphology and carcass yield. A total of 980 Ross male broiler chicks randomly assigned according to a completely randomized design with 4 treatment and 8 replications totaling 32 experimental units. The treatments consisted of different temperature ranges in the first week of life: thermal comfort temperature, temperature below the comfort zone, temperature above the comfort zone and thermal oscillation. At 35 days of age four replicates of each treatment were submitted or not to heat stress in last week's rearing (27 and 32°C). Animals submitted to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.05.00-4 chick; Thermal conditioning; Thermoregulatory system; Meat quality.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/18707

Nutritional value and chemical composition of pastures of peanut forage or red clover - doi: 10.4025/actascianimsci.v35i1.12692
Provedor de dados: 2
Autores: Azevedo Junior, Ricardo Lima de; Universidade Federal de Santa Maria; Olivo, Clair Jorge; Universidade Federal de Santa Maria; Bem, Cláudia Marques de; Universidade Federal de Santa Maria; Aguirre, Priscila Flores; Universidade Federal de Santa Maria; Quatrin, Mauricio Pase; Universidade Federal de Santa Maria; Ávila, Suélen Capa de; Universidade Federal de Santa Maria.
With this study, we aimed at evaluating the nutritional value and chemical composition of forage legume intercropping with elephant grass (EG) + spontaneous growth species (SGS) + annual ryegrass (AR) + peanut forage (PF), as treatment T1; and EG + SGS + AR + red clover (RD), as T2. The EG was planted in 4-m spaced rows. The annual ryegrass was planted between the EG rows during the cool season; the RC was sowed and the PF was preserved. The experiment was performed between October 2009 and April 2010, with six grazing cycles. Samples of forage legume was collected, under simulated the grazing, to determine the levels of organic matter (OM), crude protein (CP), neutral detergent fiber (NDF), organic matter in situ digestibility (OMISD), total phenols (TF),...
Tipo: Pesquisa de campo
Palavras-chave: 5.04.04.00-8 Arachis pintoi; Crude protein; Digestibility; Neutral detergent fiber; Phenolic compounds; Trifolium pratense.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/12692

Additive containing homo and heterolactic bacteria on the fermentation quality of maize silage - doi: 10.4025/actascianimsci.v35i4.18833
Provedor de dados: 2
Autores: Junges, Daniel; Universidade de São Paulo; Schmidt, Patrick; Universidade de São Paulo; Novinski, Charles Ortiz; Universidade Federal do Paraná; Daniel, João Luiz Pratti; Universidade de São Paulo.
This trial evaluated the addition of Lactobacillus plantarum, L. brevis and Enterococcus faecium combo additive against a control treatment. The silages were made in laboratory silos that were stored for 30, 60, 90 or 120 days before opening. We evaluated the chemical composition of the forage before and after ensiling and the fermentative losses of silages. The additive decreased (p &amp;lt; 0.01) effluent production (11.4 kg ton-1) compared to control silage (14.0 kg ton-1), but it increased (p &amp;lt; 0.01) the Neutral Detergent Fiber (NDF) and Acid Detergent Fiber (ADF) from 45.6% and 24.5% to 47.0 and 25.1% for control and additive silages, respectively. The storage periods affected (p &amp;lt; 0.01) effluent production, Dry Matter Losses (DML), NDF,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 4.03.05.00-7; Zootecnia; Forragicultura  silagem  alimentação animal aerobic stability; Effluent  gases; Lactobacillus brevis; Lactobacillus plantarum; Losses Aerobic stability; Effluent; Gases; Lactobacillus brevis; Lactobacillus Plantarum; Losses.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/18833

Requirement of energy and protein of beef cattle on tropical pasture - doi: 10.4025/actascianimsci.v35i4.21143
Provedor de dados: 2
Autores: Valente, Eriton Egidio Lisboa; Universidade Estadual do Oeste do Paraná; Paulino, Mário Fonseca; Universidade Federal de Viçosa; Detmann, Edenio; Universidade Federal de Viçosa; Valadares Filho, Sebastião de Campos; Universidade Federal de Viçosa; Cardenas, Javier Enrique Garces; Universidade Federal de Viçosa; Dias, Isabela Fernanda Teixeira; Universidade Federal de Viçosa.
Protein and energy requirements of beef cattle, aged between 4 and 18 months old, on tropical pastures, were estimated. Forty-six Nellore calves (138.3 ± 3.4 kg BW and 90-150 days old), kept on pasture, were distributed in a maintenance group (restricted feeding) or in nutritional plans, receiving a supplements with different amounts of protein and carbohydrate or non-supplemented. The net energy requirement for weight gain (NEg) was obtained by linear regression of logarithm of retained energy as a function of logarithm of empty body weight gain. The net energy requirement for maintenance (NEm) was estimated by the exponential relation between heat production and metabolizable energy intake. Net protein requirement for weight gain (RP) was estimated by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.03.01-0 grazing; Nellore; Supplementation Beef cattle; Grazing; Nellore; Supplementation.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/21143

Mesquite pod meal in elephant grass silages - doi: 10.4025/actascianimsci.v35i3.12506
Provedor de dados: 2
Autores: Rêgo, Aníbal Coutinho do; Universidade Federal Rural da Amazônia; Paiva, Paulo César Aguiar; Universidade Federal de Lavras; Muniz, Joel Augusto; Universidade Federal de Lavras; van Cleef, Eric Haydt Castello Branco; Universidade Federal de Lavras; Machado Neto, Otávio Rodrigues; Universidade Federal de Minas Gerais; Mata Junior, João Irineu da; Universidade Federal de Lavras.
This study evaluated the chemical composition and in vitro dry matter digestibility (IVDMD) of elephant grass silages at different growth stages (70, 90 and 110 days), with the addition (0, 5, 10 and 15%, on a fresh matter basis) of mesquite pod meal. A completely randomized design (CRD) was used in a factorial arrangement with four replications. PVC pipes 100 mm in diameter were used as experimental silos. After 30 days of ensilage, samples were taken from the open silos to determine chemical composition and IVDMD. The inclusion of mesquite pod meal (MPM) increased (p &amp;lt; 0.01) the concentrations of DM and CP. No interaction (p &amp;gt; 0.01) was detected between MPM concentrations and elephant grass cutting age for DM, CP and NDF contents in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.04.01-6 chemical composition; Digestibility; Ensilage; Pennisetum purpureum; Schum.; Prosopis juliflora.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/12506

Glycerin levels in the diets for crossbred bulls finished in Feed-lot: ingestive behavior, Feeding and rumination Efficiency doi:10.4025/actascianimsci.v35i4.19090
Provedor de dados: 2
Autores: Eiras, Carlos Emanuel; Universidade Estadual de Maringá; Marques, Jair de Araújo; Universidade Estadual de Maringá; Torrecilhas, Juliana Akamine; Universidade Estadual de Maringá; Zawadzki, Fernando; Universidade Estadual de Maringá; Moletta, José Luis; Instituto Agronômico do Paraná; Prado, Ivanor Nunes do; Universidade Estadual de Maringá.
This work was carried out to study corn substituting by glycerin levels on animal behavior, feeding and rumination efficiency of Purunã young bulls finished in feed-lot. It was utilized 40 bulls Purunã breed with 208.8 ± 33.75 kg and 8 months old. The diets were: without glycerin - G00, 6% of glycerin – G06, 12% of glycerin – G12 and 18% of glycerin – G18. Dry matter intake was similar among diets. On the other hand, NDF intake decreased linearly with glycerin levels supplementation in the diets. FEDM and FENDF were similar among diets. REDM and RENDF were not changed due glycerin levels. Glycerin changed activities durations of bulls. Glycerin did not affect feed frequency. At contrary, rumination frequency was reduced linearly with glycerin inclusion....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Produção animal Comportamento; Bovinos; Consumo; Confinamento; Glicerol behavior; Cattle; Feed intake; Feed-lot; Glycerol.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/19090

Indirect method for quantifying the content of photosynthetic pigments in genotypes of dwarf elephant grass - doi: 10.4025/actascianimsci.v35i1.15178
Provedor de dados: 2
Autores: Araújo, Saulo Alberto do Carmo; Universidade Federal dos Vales do Jequitinhonha e Mucuri; Vasquez, Hernan Maldonado; Universiade Estadual do Norte Fluminense “Darcy Ribeiro”; Torres Neto, Alena; Universiade Estadual do Norte Fluminense “Darcy Ribeiro”; Campostrini, Eliemar; Universiade Estadual do Norte Fluminense “Darcy Ribeiro”; Deminicis, Bruno Borges; Universidade Federal do Espírito Santo; Lima, Érico da Silva; Universidade Estadual Paulista “Júlio de Mesquita Filho".
Equations that indirectly associate the rates obtained by chlorophyll meter SPAD-502 to chlorophyll and carotenoids rates of dwarf elephant grass genotype are provided. Leaves of the genotype of dwarf elephant grass were employed. After being collected, they were transported in light-protected styrofoam boxes to the Plant Physiology Laboratory of UENF. Leaf discs of the known area were then extracted. An average of 5 readings/leaf disc were undertaken by portable chlorophyll meter SPAD-502, with 6 discs for each range and distributed according to the following scale: 0-10; 10-20; 20-30; 30-40; 40-50; 50-60. Chlorophyll meter SPAD-502 provides a quick and efficient estimate of total chlorophyll, chlorophyll-a and chlorophyll-b in genotypes of dwarf elephant...
Tipo: Pesquisa de campo; análise laboratorial
Palavras-chave: Ciência Animal; Forragicultura ccarotenoids; Chlorophyll-a; Chlorophyll-b; Chlorophyllometer; Pennisetum purpureum.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/15178

Pasture height at the beginning of deferment as a determinant of signal grass structure and potential selectivity by cattle - doi: 10.4025/actascianimsci.v35i4.20421
Provedor de dados: 2
Autores: Santos, Manoel Eduardo Rozalino; Universidade Federal de Uberlândia; Silveira, Márcia Cristina Teixeira; Empresa Brasileira de Pesquisa Agropecuária; Gomes, Virgílio Mesquita; Universidade Estadual de Montes Claros; Fonseca, Dilermando Miranda da; Universidade Federal de Viçosa; Sousa, Braulio Maia de Lana; Universidade Federal de Sergipe; Santos, Anselmo de Deus; Universidade Federal de Viçosa.
Current experiment identified the height of signal grass {Urochloa decumbens (Stapf) R. D. Webster cv. Basilisk [syn. Brachiaria decumbens Stapf cv. Basilisk]} at the beginning of deferment that provided an appropriate pasture structure and potential selectivity by cattle on deferred pastures. Four pasture heights at the beginning of deferment (10, 20, 30 and 40 cm) and two forage samples (available on pasture and simulated grazing) were studied. The experimental design was set in completely randomized blocks, with two replications, in a split-plot arrangement. Higher percentage of live leaf blades and lower percentage of live stems and senescent forage were recorded in the forage sample from simulated grazing. The increase in pasture height increased the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brachiaria decumbens; Stem; Leaf; Senescent forage; Grazing Brachiaria decumbens; Stem; Leaf; Senescent forage; Grazing.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/20421

Production and nutrition rates of piatã grass and hybrid sorghum at different cutting ages - doi: 10.4025/actascianimsci.v35i3.18016
Provedor de dados: 2
Autores: Quintino, Andréia Da Cruz; Universidade Federal de Mato Grosso; Abreu, Joadil Gonçalves de; Universidade Federal de Mato Grosso; Almeida, Roberto Giolo de; Empresa Brasileira de Pesquisa Agropecuária; Macedo, Manuel Cláudio Motta; Empresa Brasileira de Pesquisa Agropecuária; Cabral, Luciano da Silva; Universidade Federal de Mato Grosso; Galati, Rosemary Laís; Universidade Federal de Mato Grosso.
The influence of cutting age on yield and nutrition rates of piatã grass (Brachiaria brizantha cv. BRS Piatã) and hybrid sorghum (Sorghum spp. cv. BRS 801) under an integrated crop-livestock system was evaluated. The trial was carried out at the Embrapa Beef Cattle (20°27¢ S; 54°37¢ W) in Campo  Grande, Mato Grosso do Sul State, Brazil, between April and October 2009. Experimental design consisted of randomized blocks with four replicates. Treatments were distributed across a split-plot design, which included three production systems (single piatã grass; single hybrid sorghum; mixed cultivation of sorghum and piatã grass). Half-plots consisted of three forage ages at harvest (with 70, 90 and 110 days after seeding). Variables included agronomical...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brachiaria brizantha; Crop-livestock integration; Mixed pastures Brachiaria brizantha; Crop-livestock integration; Mixed pastures.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/18016

Influence of availability of shade on testicular characteristics of Santa Ines rams - doi: 10.4025/actascianimsci.v35i.18479
Provedor de dados: 2
Autores: Teodoro, Sônia Martins; Universidade Estadual do Sudoeste da Bahia; Pereira, Alfredo Manuel Franco; Universidade de Évora; Gusmão Filho, José Dantas; Instituto Federal da Bahia; Silva, Jadir Nogueira da; Universidade Federal de Viçosa.
The purpose of this study was to evaluate the effects of availability of artificial shading on testicular and seminal characteristics of Santa Ines crossbred rams. Twelve 8 month old rams at 38.1 ± 5.2 kg average weight, were used in a total random design with two treatments: areas with and without available artificial shading (black polyethylene mesh screen for a 50% reduction of solar radiation). The scrotal circumference, scrotal length, scrotal volume, rectal temperature and scrotal temperature were measured twice a week. Also a biweekly analysis of the semen was carried out, measuring the volume and spermatic concentration as well as the percentage of normal spermatozoa. The results show that available shading provided for lower scrotal temperatures...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.00.00.00-4 - ciências agrárias; 5.05.04.00-2 - reprodução animal semen; Biometrics; Sheep; Shade; Thermal stress Semen; Biometrics; Sheep; Shade; Thermal stress.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/18479

Carcass and meat traits of lambs fed by-products from the processing of oil seeds - doi: 10.4025/actascianimsci.v35i4.20403
Provedor de dados: 2
Autores: Santos, Viviane Correa; Universidade Estadual Paulista "Júlio de Mesquita Filho"; Ezequiel, Jane Maria Bertocco; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Morgado, Eliane da Silva; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Souza Júnior, Severino Cavalcante de; Universidade Federal do Piauí.
We evaluated the effect of adding by-products from the processing of oil seeds in the diet of lambs on the carcass and meat traits. Twenty-four non-castrated weaned male Santa Inês lambs with approximately 70 days of age and initial average weight of 19.11 ± 2.12 kg were distributed into a completely randomized design. Treatments consisted of diets containing by-products with 70% of concentrate and 30% of tifton hay (Cynodon spp.) and were termed SM: control with soybean meal; SC: formulated with soybean cake; SUC: formulated with sunflower cake and PC: formulated with peanut cake. Diets had no effects on the carcass traits evaluated. There was no significant effect on the mean values of perirenal, omental and mesenteric fats (0.267, 0.552 and 0.470 kg,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nutrição animal; Avaliação de alimentos peanut cake; Protein; Soybean cake; Sunflower cake; Yield Peanut cake; Protein; Soybean cake; Sunflower cake; Y yield.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/20403

Influence of agrochemicals fipronil and imidacloprid on the learning behavior of Apis mellifera L. honeybees - doi: 10.4025/actascianimsci.v35i4.18683
Provedor de dados: 2
Autores: Carrillo, Marcela Pedraza; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Bovi, Thaís de Souza; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Negrão, Adriana Fava; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Orsi, Ricardo de Oliveira; Universidade Estadual Paulista “Júlio de Mesquita Filho”.
Agrochemicals on crop cultivated areas is a source of contamination for bees and may cause physiological and behavioral disorders and mortality. The LD50 of the pesticides fipronil and imidacloprid was determined and their effect on the learning behavior of Apis mellifera L. honeybee evaluated. LD50 was determined by the ingestion of contaminated food with different concentrations of insecticide concentrations: Fipronil (0, 0.8, 0.4, 0.2, 0.1 and 0.05 µg bee-1) and imidacloprid (0, 0.4, 0.2, 0.1, 0.05 and 0.025 µg bee-1). The method of proboscis extension reflection (PER) and learning through citral odor evaluated their responses to food stimulation. LD50 obtained were 0.28 ± 0.11 and 0.10 ± 0.04 µg bee-1 for fipronil and imidacloprid, respectively. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Beekeeping; Toxicity; Lethal dose Agrochemical fipronil; Beekeeping; Toxicity; Lethal dose.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/18683

Tiller population density in deferred Urochroa decumbens pasture and strategies for nitrogen fertilization - doi: 10.4025/actascianimsci.v35i1.10243
Provedor de dados: 2
Autores: Teixeira, Fábio Andrade; Universidade Estadual do Sudoeste da Bahia; Bonomo, Paulo; Universidade Estadual do Sudoeste da Bahia; Pires, Aureliano José Vieira; Universidade Estadual do Sudoeste da Bahia; Silva, Fabiano Ferreira; Universidade Estadual do Sudoeste da Bahia; Abreu Filho, George; Universidade Estadual do Sudoeste da Bahia; Viana, Pablo Teixeira; Universidade Estadual do Sudoeste da Bahia.
The objective of this work was to evaluate the tiller population density in Urochroa decumbens pasture deferred for 95 and 140 days, aiming to determine the best strategy for nitrogen fertilization. Four fertilization strategies at the beginning and end of summer (0-0, 100-0, 50-50, 0-100 kg  ha-1 of N) were studied, respectively, with four repetitions. For the pastures deferred for 95 days, the population densities of vegetative tillers were greater (p &amp;lt; 0.05) for the strategy 0-100. At the end of the deferment period, the weight of the vegetative tillers per hectare was greater for the strategy 0-100, followed by the strategy 50-50. The densities of vegetative tillers, evaluated in the pastures deferred for 140 days, were greater (p &amp;lt; 0.05)...
Tipo: Pesquisa de campo
Palavras-chave: Density; Deferment; Grazing; Tiller; Urea.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/10243

Some factors that affect ruminant meat quality: from the farm to the fork. Review - doi: 10.4025/actascianimsci.v35i4.21756
Provedor de dados: 2
Autores: Guerrero, Ana; Universidade de Zaragoza; Valero, Maribel Velandia; Universidade Estadual de Maringá; Campo, Mari Mar; Universidad de Zaragoza; Sañudo, Carlos; Universidad de Zaragoza.
Nowadays consumers are highly interested in the quality of the products they eat, especially when this refers to meat. Consumption of meat from ruminant animals and its derivatives is on the increase, particularly in some countries such as Brazil, one of the main beef exporters in the world. Current analysis is a review of the different factors that affect meat quality in ruminants, with a focus on sensory analyses. Some factors throughout the entire meat chain are analyzed, or rather, from those that producers underscore to improve the quality of their products to those related with consumers' habits and beliefs. Most of the papers reviewed have been developed by researchers involved in the Meat Quality and Technology Group (University of Zaragoza and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Consumers; Human health; Ruminants; Sensory analyses.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/21756

Protein fraction and digestibility of marandu, xaraes and campo grande grasses in monocropping and intercropping systems under different sowing methods - doi: 10.4025/actascianimsci.v35i1.15134
Provedor de dados: 2
Autores: Moreira, Juliane Ferreira Morais; Universidade de Rio Verde; Costa, Kátia Aparecida de Pinho; Instituto Federal Goiano; Severiano, Eduardo da Costa; Instituto Federal Goiano; Epifânio, Patrícia Soares; Instituto Federal Goiano, Campus Rio Verde; Crunivel, Welma Santos; Universidade de Rio Verde; Guimarães, Kátia Cylene; Instituto Federal Goiano.
A study was carried out to evaluate the protein fraction and in vitro dry matter digestibility of marandu, xaraes grasses and campo grande in monocropping and intercropping systems under different planting methods, for a period of two years. The experimental design was a complete randomized block with four replications. The treatments consisted of the following crop systems: campo grande in monocropping; xaraés grass in monocropping; marandu grass in monocropping; xaraés intercropped with campo grande in rows; xaraés intercropped with campo grande, broadcast; marandu grass intercropped with campo grande in rows; and marandu intercropped with campo grand, broadcast. The evaluations were conducted for two years, consisting of seasonal evaluations (autumn,...
Tipo: Pesquisa de Campo
Palavras-chave: 5.04.04.00-8 Brachiaria brizantha; Persistence; Stylosanthes spp.; Nutritional value.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/15134

Nutrient intake, productive performance and body measurements of dairy heifers fed with different sources of protein - doi: 10.4025/actascianimsci.v35i3.18749
Provedor de dados: 2
Autores: Mota, Diego Azevedo; Universidade Federal do Oeste do Pará; Berchielli, Telma Teresinha; Universidade Estadual Paulista; Canesim, Roberta Carrilho; Universidade Estadual Paulista; Rosa, Bruna Laurindo; Universidade Estadual Paulista; Ribeiro, Andressa Fereirra; Universidade Estadual Paulista; Brandt Filho, Heitor Violin; Universidade Estadual Paulista.
This study evaluated the effect of different protein sources (soybean meal, cottonseed meal, peanut meal and sunflower meal) on dry matter and nutrient intake, productive performance and body measurements of dairy heifers, Holstein x Zebu, recreated in confinement. The experiment consisted in a randomized complete block design made up by 6 replications and 4 treatments. The mean values of ingestion of ether extract (EEI, kg day-1) were statistically different (p &amp;lt; 0.05). The neutral detergent fiber intake (NDFI, %BW) also presented differences (p &amp;lt; 0.05), with higher values in the diet containing sunflower meal (1.01% BW) in relation to the diet with soybean meal (0.84% BW). The average daily weight gain using the diet with soybean meal was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Body measurement; Daily gain; Protein concentrate; Sugarcane.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/18749

Agronomic characteristics of corn hybrids for silage production in the State of Mato Grosso, Brazil - doi: 10.4025/actascianimsci.v35i1.15592
Provedor de dados: 2
Autores: Domingues, Alício Nunes; Universidade Federal de Mato Grosso; Abreu, Joadil Gonçalves de; Universidade Federal de Mato Grosso; Caneppele, Carlos; Universidade Federal de Mato Grosso; Reis, Rafael Henrique Pereira dos; Universidade Federal de Mato Grosso; Behling Neto, Arthur; Universidade Federal de Mato Grosso; Almeida, Cléverton Marcelino de; Universidade Federal de Mato Grosso.
The experiment was conducted at the Experimental Farm of the Federal University of Mato Grosso in the municipality of Santo Antônio do Leverger, State of Mato Grosso, Brazil to evaluate the agronomic characteristics of corn hybrids in the cultivation of second crop for silage production. The experimental design was carried out with randomized blocks with 23 treatments (hybrids) and three replications. Corn hybrids from different seed companies and recommended for the midwestern region of Brazil, were used. The agronomic traits were: stem diameter (cm), plant height and ear insertion (m); yield of green matter (ton. ha-1), percentage of spike, stem and leaves in green mass; ear productivity (ton. ha-1), dry matter content of stem + leaf and whole plant....
Tipo: Experimento de campo; análise laboratorial; pesquisa
Palavras-chave: 5.04.04.01-6 green mass; Plant height; Silage production; Spike yield; Zea mays green mass; Plant height; Silage production; Spike yield; Zea mays.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/15592

Nutritive value of high and low tanin content of sorghum high moisture silage for horses - doi: 10.4025/actascianimsci.v35i1.10575
Provedor de dados: 2
Autores: Oliveira, Kátia de; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Costa, Ciniro; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Bittar, Carla Maris Machado; Universidade de São Paulo; Oliveira, Vinícius Antonio Baptista; Universidade Federal de Lavras; Sá, Janaina Carolina de; Universidade Estadual Paulista “Júlio de Mesquita Filho”.
There were used eight castrated male horses, crosbred. It was used randomized completely design.  The objective was to evaluate the nutritive value of high-moisture grains silage of sorghum with low (SLT) and high (SHT) tannin in the feeding equine. The treatments consisted of two test-diets containing SLT or SHT, replacing 30% of dry matter (DM) of the reference-diet, constitued by only hay. The values of digestibility coefficients (DC) of nutrients SLT and SHT had differences for DCDM, DCOM, DCCE, DCCP and DCStarch, whose means values were 79.53, 84.54, 79.36, 76.11 and 100% to SLT e 60.29, 64.47, 59.38, 44.63 and 97.06% to SHT, respectively. It was concluded that high-moisture grains silage of sorghum with low tannin should be used in equine nutrition,...
Tipo: Alimentação de equinos
Palavras-chave: 5.04.03.00-1 digestibility; Digestible value; Equine; Nutrient.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/10575

Morphology and expression of genes related to skeletal muscle growth in juveniles of pirarucu (Arapaima gigas, Arapaimatidae, Teleostei) - doi: 10.4025/actascianimsci.v35i3.18219
Provedor de dados: 2
Autores: Carani, Fernanda Regina; Universidade Estadual Paulista (UNESP); Duran, Bruno Oliveira da Silva; Universidade Estadual Paulista (UNESP); Paula, Tassiana Gutierrez de; Universidade Estadual Paulista (UNESP); Piedade, Warlen Pereira; Universidade Estadual Paulista (UNESP); Dal-Pai, Maeli; Universidade Estadual Paulista (UNESP).
Skeletal muscle growth in the pirarucu (Arapaima gigas) is highly interesting to fish farmers because it provides information about how the mechanism in muscle mass increase, characteristic of the species, is regulated. Pirarucu has specific muscle growth that highlights the species’s significance and commercial value. Current research evaluates the morphology and the growth-related gene expression in the red and white skeletal muscles of the pirarucu. Muscle samples were collected from the lateral anterior region and frozen in liquid nitrogen. Histological sections were performed and stained by HE for morphological analysis. Red and white muscle samples were used to determine MyoD, myogenin, and myostatin genes expression by Real-time Polymerase Chain...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.06.03.00-0 muscle fibre morphology; Myogenic regulatory factors; Myostatin; Skeletal muscle growth; Arapaima gigas; Real time PCR.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/18219

Signal grass structure at different sites of the same pasture under three grazing intensities - doi: 10.4025/actascianimsci.v35i1.11801
Provedor de dados: 2
Autores: Santos, Manoel Eduardo Rozalino; Colegiado de Zootecnia, Universidade Federal do Vale do São Francisco; Fonseca, Dilermando Miranda da; Universidade Federal de Viçosa; Gomes, Virgilio Mesquita; Universidade Federal de Viçosa; Pimentel, Róberson Machado; Universidade Federal de Viçosa; Albino, Ronan Lopes; Universidade Federal de Viçosa; Silva, Simone Pedro da; Universidade Federal de Viçosa.
The experiment was conducted to evaluate Brachiaria decumbens cv. Basilisk at different sites of the same pasture featuring varying grazing intensities (under grazed, properly grazed and overgrazed). The pasture was managed under continuous stocking using 200-kg cattle and grass height kept at about 25 cm. The randomized block design was used, with three replications. Sward height (38.0 cm) and extended plant height (85.2 cm) were greater at the under grazed site. The falling index was lower at the properly grazed site (1.28). At the under grazed site, the masses of green leaf blade (3442 kg ha-1 DM), green stem (8370 kg ha-1 DM), green forage (11812 kg ha-1 DM) and total forage (14137 kg ha-1 DM) were higher when compared to the overgrazed and properly...
Tipo: Pesquisa de campo
Palavras-chave: 5.04.04.00-8 Brachiaria decumbens; Morphological composition; Falling index; Continuous stocking; Tiller size.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/11801

Defoliation patterns in signal grass tillers with varying heights in the same pasture  - doi: 10.4025/actascianimsci.v35i3.14376
Provedor de dados: 2
Autores: Santos, Manoel Eduardo Rozalino; Universidade Federal de Uberlandia; Fonseca, Dilermando Miranda da; Universidade Federal de Viçosa; Silva, Guilherme Porte; Universidade Federal de Viçosa; Braz, Thiago Gomes dos Santos; Universidade Federal de Viçosa; Gomes, Virgilio Mesquita; Universidade Federal de Viçosa; Silva, Simone Pedro da; Universidade Estadual Paulista “Júlio de Mesquita Filho".
The experiment was carried out to evaluate the patterns of defoliation in plants of various heights in the same pasture of Brachiaria decumbens cv. Basilisk under continuous stocking with cattle. Four plant heights were evaluated (10, 20, 30 and 40 cm) in the same managed sward, with mean height equal to 25 cm. A randomized blocks design was used, with two replications. Defoliation frequency increased linearly along with plant height in the same pasture. Defoliation intensity, number of defoliations in leaf blade and percentage of leaf blade grazed per tiller also increased linearly along with plant height. The defoliation interval decreased linearly according to plant height. The quadratic model was adequately fitted into grazing efficiency data, reaching...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.04.00-8 Brachiaria decumbens; Forage losses; Grazing; Horizontal pasture sward.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/14376

Carcass characteristics of zebu steers receiving different oleaginous grains - doi: 10.4025/actascianimsci.v35i3.14533
Provedor de dados: 2
Autores: Oliveira, Dalton Mendes; Universidade Federal de Lavras; Ladeira, Márcio Machado; Universidade Federal de Lavras; Bassi, Marcelo Silva; Universidade Federal de Lavras; Chizzotti, Mário Luiz; Universidade Federal de Lavras; Machado Neto, Otávio Rodrigues; Universidade Federal de Lavras; Busato, Karina Costa; Universidade Federal de Lavras.
This research aimed to evaluate carcass traits of Zebu steers fed different oleaginous grains. Thirty one 23 months old zebu steers with 365 + 37.5 kg of live weight were used. The diets consisted ofcorn silage and four different concentrates; no additional lipids and three different ground oilseeds sources: soybean, cottonseed and linseed. The diets had concentrate:roughage ratio of 60:40 and were offered ad libitum. The experimental period was of 84 days, preceded by a 28 day adaptation period. The experiment was carried out in a randomized block design and the means were compared by Scott-Knott test at 5% level of probability. The CS inclusion of into the diet decreased (p &amp;lt; 0.05) carcass yield of the animals. The hindquarter was heavier (p...
Tipo: Trabalho de Campo
Palavras-chave: 5.04.05.00-4 beef cattle; Cottonseed; Feedlot; Linseed; Lipids; Soybean.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/14533

Can a small change in the tilapia’s on-going feeding strategy impair its growth? - doi: 10.4025/actascianimsci.v35i3.18290
Provedor de dados: 2
Autores: Caldini, Nayara Nunes; Universidade Federal do Ceará; Pereira, Nayagra Vidal; Universidade Federal do Ceará; Rebouças, Vanessa Tomaz; Universidade Federal do Ceará; Sá, Marcelo Vinícius do Carmo e; UFC.
The aim of the present work was to answer the following question: can a small change in the tilapia’s on-going feeding strategy impair its growth? In the initial phase of the study, fish were evenly distributed and maintained for two weeks in four tanks. In tanks 1 and 2, the ration was given in three equal meals at 8, 12 and 16h or at 9, 13 and 17h, respectively. In tanks 3 and 4, there was only one daily meal at 9 or 10 o’clock, respectively. In the second 8-week phase, fish from tank 1 were distributed into two groups in ten 100-L tanks: the 8-12-16 group, in which fish were always fed at 8, 12 and 16h; and the 8-12-16/9-13-17 group, in which fish were fed at 8, 12 and 16h in the first four weeks and at 9, 13 and 17h in the last four weeks. Fish from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feeding schedule; Circadian rhythm; Feeding management; Fish culture Feeding schedule; Circadian rhythm; Feeding management; Fish culture.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/18290

Cytotoxicity of erythrosine (E-127), brilliant blue (E-133) and red 40 (E-129) food dyes in a plant test system - doi: 10.4025/actascibiolsci.v35i4.18419
Provedor de dados: 3
Autores: Oliveira, Maria Virna Aguiar de; Universidade Federal do Piauí; Alves, Dandará Darhlen Lopes; Universidade Federal do Piauí; Lima, Leonardo Henrique Guedes de Morais; Universidade Federal do Piauí; Sousa, João Marcelo de Castro e; Universidade Federal do Piauí; Peron, Ana Paula; Campus Senador Helvídio Nunes de Barros Universidade Federal do Piauí.
The objective of this work was to evaluate the cytotoxic effect of the food dyes erythrosine, brilliant blue and red 40 on the cell cycle of Allium cepa L. Each dye was evaluated at doses of 0.4 and 4.0 ml, at exposure times of 24 and 48 hours, in onion root tip cells. Cells and the presence of chromosomal aberrations were analyzed throughout the whole cell cycle, totaling 5,000 cells for each group of bulbs. The mitotic index was calculated and the statistical analysis was conducted through the Chi-square test (p &amp;lt; 0.05). From the obtained results, it was verified that the food additives erythrosine and brilliant blue were not cytotoxic to the cells of the test system. However, the red 40 dye, at the two evaluated doses and the two exposure times...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Genética food additive; Dye toxicity; Allium cepa citogenética.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/18419

Diversity and fish distribution at Rodrigo de Freitas Lagoon, Rio de Janeiro State, Brazil, using GIS - doi: 10.4025/actascibiolsci.v36i1.18563
Provedor de dados: 3
Autores: Moraes, Luzia Alice Ferreira de; Universidade Federal do Estado do Rio de Janeiro; Andreata, José Vanderli; Universidade Santa Úrsula; Oliveira, Bruno Teixeira de; Universidade Federal do Estado do Rio de Janeiro.
Fish fauna is considered a good indicator of water quality. The Rodrigo de Freitas Lagoon is located in Rio de Janeiro city with a great scenic beauty. However, along the years, the Lagoon has been negatively impacted by human activities which can be seen in massive fish deaths and blooms of toxic algae. This study evaluated fish abundance and diversity in two historical periods, and between areas of capture. Multivariate data analyses were performed to find similar groups of fish fauna and to evaluate fish abundance and their seasonal and spatial variation. It was also used the algebraic language as a tool to combine raster layers as dissolved oxygen in surface, bathymetry and fish abundance by using rules and conditions involved in the fish zoning. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.05.00.00-9 ichtyofauna abundance; Environmental variables; Map algebra Ecologia de peixes.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/18563

Evaluation of the protective effect of guava fruits and leaves on oxidative stress   - doi: 10.4025/actascibiolsci.v36i1.19839
Provedor de dados: 3
Autores: Freire, Juliana Mesquita; Faculdades Unidas do Vale do Araguaia; Abreu, Celeste Maria Patto de; Universidade Federal de Lavras; Duarte, Stella Maris da Silveira; Universidade Federal de Alfenas; Paula, Fernanda Borges Araújo de; Universidade Federal de Alfenas; Lima, Adriene Ribeiro; Universidade Federal de Lavras.
Oxidative stress is an imbalance between reactive oxygen species and antioxidant capacity of action. Thus, research, alternative to mitigate the damaging effects of oxidative stress, improving the body´s antioxidant capacity, prevented the disease and its complicatons. The leaves and fruits of guava are rich in the antioxidants. This work aimed to study the effect of flour and ethanolic/acetone extracts leaves and fruits of guava on lipid oxidation in rats with hypercholesterolemic. The flour and extracts decreased leves of triglycerides and non – HDL cholesterol and increased in the HDL. Cholesterol levels decreased only leaves and fruits. The activity of GPx decreased in samples serum in all treatments  and the SOD only the extracts were effective. There...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioquímica antioxidants; Enzymes; Malonic dialdehyde Metabolismo e bioenergéetica.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/19839

Adaptive leaf anatomical characteristics of Brachiaria ruziziensis genotypes (Poaceae) in different environments - doi: 10.4025/actascibiolsci.v35i4.18265
Provedor de dados: 3
Autores: Santos, Fabíola Carvalho; Universidade Federal de Lavras; Techio, Vânia Helena; Universidade Federal de Lavras; Freitas, Aline Silva; Universidade Federal de Lavras; Castro, Evaristo Mauro de; Universidade Federal de Lavras; Davide, Lisete Chamma; Universidade Federal de Lavras; Sobrinho, Fausto Souza; Empresa Brasileira de Pesquisa Agropecuária.
Studies on morphological plasticity are extremely important to plant breeding seeking to optimize genotype interactions with their environments. The present study evaluated 38 genotypes of Brachiaria ruziziensis cultivated during the rainy (October to March) and dry (April to September) seasons and examined variations in their anatomical characteristics. Fully expanded leaves were collected and fixed in FAA70 (formaldehyde: acetic acid: ethyl alcohol) for 72h and subsequently stored in 70% alcohol. Median sections of leaf blades were examined and evaluated according to traditional plant anatomical procedures. Genotypes 15, 27, 40, 53, and 90 demonstrated interactions with the environment in five of the anatomical characteristics evaluated; genotypes 1 and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.03.00.00-0; 2.03.02.03-7 morphological plasticity; Plant anatomy; Plant breeding; Forage Anatomia vegetal.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/18265

Does a small forested area contribute to enhance species richness and diversity of fish assemblage at an urban stream? - doi: 10.4025/actascibiolsci.v35i4.16592
Provedor de dados: 3
Autores: Pera, Carolina Costa; Universidade Estadual de Maringá; Zanatta, Naiara; Universidade Estadual de Maringá; Sacramento, Patricia Almeida; Universidade Estadual de Maringá; Cionek, Vivian de Melo; Universidade Estadual de Maringá; Benedito, Evanilde; Universidade Estadual de Maringá.
Conservation Units (CU) aim to contribute to the balance between human and environmental demand, by protecting natural resources and biological communities. In this study we examined the differences in the attributes of the fish community in four stretches of an urban stream, two inside and two outside the CU, without vegetation cover, and tested the hypothesis that the presence of riparian vegetation is positively reflected in the attributes of fish fauna. Five species were caught, distributed into four orders and five families. Attributes like richness, abundance, dominance, Shannon-Wiener diversity, and evenness were estimated and significant differences were detected for continuous stretches considering stream flow direction. The first stretches (URBI...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fish fauna; Conservation units; Neotropical streams; Pollution; Urbanization Ecologia Aplicada.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/16592

Critical process parameters optimization for hyperthermostable β amylase production by Bacillus subtilis DJ5 using response surface methodology   - doi: 10.4025/actascibiolsci.v36i1.17427
Provedor de dados: 3
Autores: Poddar, Abhijit; Bidhannagar College (govt. of West bengal); Ghara, Tushar Kanti; Bidhannagar College (govt. of West bengal); Jana, Subhas Chandra; Bidhannagar College (govt. of West bengal).
The combined effects of significant physical and chemical factors affect hyperthermostable β amylase production under submerged fermentation by Bacillus subtilis DJ5. The above was studied using the experimental design and response surface methodology. A 23 full-factorial central composite design was chosen to analyze interactions among three factors i.e. substrate concentration, medium pH and incubation temperature. The experimental data were fitted into a polynomial model for the yield of enzyme and an optimum level was arrived at with optimized conditions. Solving the coded values using Excel equation function indicated that maximum enzyme production is possible at a substrate concentration of 7.07 mg mL-1, pH 6.622 and temperature of 35.435°C. Such...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microbiology central composite design; Response surface plot; Contour plot; Submerged fermentation; Thermozymes Microbiology.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/17427

High levels of dietary vitamin E improve the reproductive performance of female Oreochromis niloticus - doi: 10.4025/actascibiolsci.v36i1.19830
Provedor de dados: 3
Autores: Nascimento, Thálita Stefann Ribeiro; Universidade Estadual Paulista "Júlio de Mesquita Filho"; De Stéfani, Marta Verardino; Universidade Estadual Paulista "Júlio de Mesquita Filho"; Malheiros, Euclides Braga; Universidade Estadual Paulista "Júlio de Mesquita Filho"; Koberstein, Teresa Cristina Ribeiro Dias; Universidade Estadual Paulista "Júlio de Mesquita Filho".
This study aimed to evaluate the effect of vitamin E on reproductive responses of female tilapia (Oreochromis niloticus). To this, isonitrogenous and isocaloric diets with different levels of vitamin E supplementation (200, 300, 400, and 500 mg kg-1) were provided to groups of females for 90 days. Supplementation positively influenced the volume of eggs produced, spawning rate, fecundity, hatching rate, average production of larvae, reproductive frequency and survival. The fertilization rate, weight, and diameter of the eggs were not affected by supplementation. This study showed that 400 mg kg-1 vitamin E in the diet during the reproductive period of female Nile tilapia are sufficient to ensure the best reproductive performance, providing efficient...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ciências agrárias 5.06.03.00-0 α-tocopherol; Broodstock nutrition; Nutritional requirements; Nile tilapia Aquicultura.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/19830

Spatial distribution of the assemblage of Chironomidae larvae (Diptera) in five floodplain lakes from Ilha Grande National Park (Paraná - Mato Grosso do Sul State, Brazil) - doi: 10.4025/actascibiolsci.v35i2.10799
Provedor de dados: 3
Autores: Pinha, Gisele Daiane; Universidade Estadual de Maringá; Alessio, Priscila Colombelli; Universidade Estadual do Oeste do Paraná; Gurski, Fernanda de Almeida; Universidade Estadual do Oeste do Paraná; Sacramento, Patrícia Almeida; Universidade Estadual de Maringá; Pezenti, Tércio Abel; Instituto Chico Mendes de Conservação da Biodiversidade; Takeda, Alice Michiyo; Universidade Estadual de Maringá.
Chironomidae larvae (Diptera) are one of the most important families among aquatic insects due to the higher abundance and species richness, considered an important tool for ecological studies. This study evaluated the richness of Chironomidae assemblage and related the distribution with physical and chemical variables in five lakes of the Paraná river, in the Ilha Grande  National Park. There were two samplings, one in the central region and another in the marginal area of the floodplain lakes. In each region were collected six samples, five for biological analysis and one for granulometric analysis. The granulometric composition and organic matter content were the principal variables influencing the density and richness of Chironomidae. The scores of the...
Tipo: Distribuição espacial
Palavras-chave: 2.05.02.00-1 floodplain lakes; Composition; Abundance Ecologia de Ecossistemas.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/10799

Current and historical climate signatures to deconstructed tree species richness pattern in South America - doi: 10.4025/actascibiolsci.v35i2.14202
Provedor de dados: 3
Autores: Lima-Ribeiro, Matheus Souza; Universidade Federal de Goias; Faleiro, Frederico Valtuille; Universidade Federal de Goias; Silva, Daniel Paiva; Universidade Federal de Goias.
The purpose of this study was to investigate the importance of present and historical climate as determinants of current species richness pattern of forestry trees in South  America. The study predicted the distribution of 217 tree species using Maxent models, and calculated the potential species richness pattern, which was further deconstructed based on range sizes and modeled against current and historical climates predictors using Geographically Weighted Regressions (GWR) analyses. The current climate explains more of the wide-ranging species richness patterns than that of the narrow-ranging species, while the historical climate explained an equally small amount of variance for both narrow-and-wide ranging tree species richness patterns. The richness...
Tipo: Padrões espaciais
Palavras-chave: 2.00.00.00-6; Current and historical climate signatures to deconstructed tree species richness pattern in South America; Ecologia Aplicada.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/14202

Desiccation and recovery of periphyton biomass and density in a subtropical lentic ecosystem - doi: 10.4025/actascibiolsci.v35i3.14022
Provedor de dados: 3
Autores: Algarte, Vanessa Majewski; Universidade Estadual de Maringá; Siqueira, Natália Silveira; Universidade Estadual de Maringá; Rodrigues, Liliana; Universidade Estadual de Maringá.
This study assessed the desiccation effects on biomass and algal density of periphyton in a subtropical lentic ecosystem. This experiment was conducted with only one in situ experimental desiccation event for 15 hours in a mature periphytic community. The periphyton after desiccation was distinct in density and biomass estimators (dry weight and chlorophyll a) when compared to the control periphyton. After the tenth day of desiccation, the community presented similar values for biomass estimators when compared to the control periphyton. The density and biomass estimators of the periphyton community was affected by the desiccation event and required about ten days to recover to pre-disturbance conditions.  
Tipo: Estudo ecológico
Palavras-chave: Ecologia 2.05.00.00-9 chlorophyll a; Disturbance; Dry weight; Resilience; Floodplain ecologia.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/14022

Reproductive ability and level of infestation of the Varroa destructor mite in Apis mellifera apiaries in Blumenau, State of Santa Catarina, Brazil  - doi: 10.4025/actascibiolsci.v36i1.20366
Provedor de dados: 3
Autores: Carneiro, Francisco Estevão; Universidade Regional de Blumenau; Barroso, Gustavo Valadares; Universidade de São Paulo; Strapazzon, Roger; Universidade Regional de Blumenau; Moretto, Geraldo; Universidade Regional de Blumenau.
Varroa destructor mite causes mortality of Apis mellifera bees throughout the world. Its greatest damage to these colonies has been reported in European countries and North America. The impact of the mite is related to the climate and the bee race on each region in which the plague has been established. Varroa causes little damage to the colonies of africanized honeybees in Brazil and the levels of infestation are relatively small and stable. The reproductive ability of Varroa females was evaluated in pupae of workers of 17-18 days of age, obtained from eight beehives of africanized bees for twelve months. The average number of offspring (deutonymphs, protonymphs and eggs) each Varroa produced was 3.18 ± 0.19. The average total number of deutonymph and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zoologia; Parasitologia; Comportamento animal; Varrosis; Grooming; Hygienic behavior; Tolerance; Mortality Parasitologia.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/20366

Feeding of larvae of the hybrid surubim Pseudoplatystoma sp. under two conditions of food management - doi: 10.4025/actascibiolsci.v35i2.15359
Provedor de dados: 3
Autores: Silva, Andréa Fernanda Lourenço da; Universidade Federal da Grande Dourados; Russo, Márcia Regina; Universidade Federal da Grande Dourados - UFGD; Ramos, Lucimara de Araújo; Universidade Federal da Grande Dourados - UFGD; Rocha, Aryadne Simões; Universidade Estadual de Mato Grosso do Sul.
We evaluated the growth and diet composition of hybrid surubim larvae (Pseudoplatystoma corruscans x P. reticulatum) produced in two fish farming by using different systems of feeding with natural plankton: M I, larvae are transferred to fertilized fish pond for being freely fed with natural plankton; M II, larvae are remained inside laboratory in glass fiber boxes and plankton are gathered with a plankton net and offered in a controlled way. It was collected 10 individuals daily during the feeding period with live plankton for 20 days. After the biometry, stomachs were opened and the food items identified and quantified by the volumetric method. The items were represented by algae, protozoa, microcrustacean, insect larvae and surubim fragments...
Tipo: Estudos morfológicos
Palavras-chave: Ecologia larviculture; Freshwater fish; Diet 2.05.03.00-8 Ecologia aplicada.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/15359

Advances in studies on testate amoebae (Arcellinida and Euglyphida): a scientometric approach - doi: 10.4025/actascibiolsci.v35i4.18184
Provedor de dados: 3
Autores: Schwind, Leilane Talita Fatoreto; Universidade Estadual de Maringá; Dias, Juliana Déo; Universidade Estadual de Maringá; Joko, Ciro Yoshio; Centro de Ensino Unificado do Distrito Federal; Bonecker, Claudia Costa; Universidade Estadual de Maringá; Lansac-Tôha, Fábio Amodêo; Universidade Estadual de Maringá.
Testate amoebae have a great potential for use in scientific researches due to their ecological characteristics such as abundance, wealth, and generation time. In this way, this study aimed to present a scientometric analysis to describe the evolution of the different advances in researches on testate amoebae and identify a temporal pattern in this evolution. The literature review was based on papers indexed by Thomson Reuters (www.isiwebofknowledge.com) and SciVerse Scopus (www.scopus.com). In total 562 papers were examined. Results showed a pattern of evolution in scientific studies, most with ecological approach with descriptive and predictive designs. At the global level, researches on testate amoebae progressed in both the number of articles published...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.00.00.00-6; 2.05.00.00-9 protest; Geographical distribution; Scientometric analysis; Time trend Ciências Biológicas e Ecologia.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/18184

Influence of pitfall designs and use of baits on the capture of small mammals in Southern Minas Gerais, Brazil - doi: 10.4025/actascibiolsci.v35i4.17498
Provedor de dados: 3
Autores: Rocha, Daniel Gomes da; Instituto de Desenvolvimento Sustentável Mamirauá / Instituto Nacional de Pesquisas da Amazônia; Passamani, Marcelo; Universidade Federal de Lavras.
Each kind of trap tends to be selective on species sampled, in a way that each one only reveals part of the abundance and species richness of the community sampled. In this way, in order to know the factors that affect the success of sampling methods is crucial for a better planning of experiments and data analysis. The aim of this study was to evaluate the factors that affect the success of pitfall traps in capturing small mammals, such as trap size, designs and use of bait. The study was carried out in two reserves inside the campus of the Universidade Federal de Lavras (UFLA), in South Minas Gerais State, Brazil. In total, 65 specimens belonging to 8 species were caught. Different types of trap design (Y-shaped and I-shaped) have not influenced the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.04.06.00-2; 2.05.00.00-9 sampling methods; Abundance; Species richness; Rodent; Marsupial 2.04.00.00-4.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/17498

Periphytic diatom as bioindicators in urban and rural streams  - doi: 10.4025/actascibiolsci.v36i1.18175
Provedor de dados: 3
Autores: Moresco, Carina; Universidade Estadual de Maringá; Rodrigues, Liliana; Universidade Estadual de Maringá.
Periphytic diatoms were sampled from two streams, one located in an urban area and the other located in a rural area, in Maringá, State of Paraná, Brazil. In addition to temporal variability, differences in the assemblage structure between streams were evaluated and correlated with physical and chemical characteristics. Six samples of periphytic diatoms were collected from each stream from July 2007 to June 2008. The streams differed in abiotic factors and in relation to the structure of diatom assemblages and the spatial scale was more important than the temporal scale (ANOVA, p ≥ 0.05; non-metric multidimensional scaling (NMS) stress = 13.73, p = 0.009). The Procrustes analysis (m2 = 0.7607 and p = 0.0001) showed that variables with the greatest...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ciências Biológicas - Ecologia indicator species; Nutrients; Human impact; Bacillariophyta; Periphyton Diatomáceas Perifíticas.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/18175

Population dynamics of the yellow piranha Serrasalmus spilopleura Kner, 1858 (Characidae, Serrasalminae) in Amazonian floodplain lakes - doi: 10.4025/actascibiolsci.v35i3.15749
Provedor de dados: 3
Autores: Sousa, Fabricio Barros de; Universidade Federal Rural da Amazônia; Soares, Maria Gercilia Mota; Instituto Nacional de Pesquisas da Amazônia; Prestes, Luiza; Universidade do Estado do Amapá.
Fish is the main source of protein in the Amazon and fishing is one of the most important sources of income for the Amazonian population. Serrasalmus spilopleura is a species that have been increasingly consumed by riverside communities, although it is only occasionally commercialized at regional markets. Therefore, this work sought to generate information about the population biology of S. spilopleura captured in floodplain lakes, Jaitêua and São Lourenço, in Manacapuru, Amazonas State. The population parameters were estimated by analyzing the distribution of the length frequency with the help of the ELEFAN I routine of the FISAT II program. The weight/length relationship was estimated by linear regression, longevity by Taylor’s method, rate of natural...
Tipo: Population dynamics of fish
Palavras-chave: 2.05.00.00-9 growth; Mortality; Freshwater fish; Weight/length relationship; ELEFAN Ecologia.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/15749

Structure and regeneration capacity of a urban forest fragment - doi: 10.4025/actascibiolsci.v35i2.14810
Provedor de dados: 3
Autores: Souza, Débora Cristina; Universidade Tecnológica Federal do Paraná; Alves, Arielle Vanessa Barbosa; Universidade Tecnológica Federal do Paraná; Tolomeotti, Luciana Oliveira; Universidade Tecnológica Federal do Paraná; Silva, Jilvan Ribeiro da; Universidade Tecnológica Federal do Paraná; Franco, Janaina de Melo; Universidade Tecnológica Federal do Paraná.
Understanding the plant communities affected by human activities related to urbanization is an important tool to conserve these. In this way, this study on an urban forest fragment aimed to evaluate, through a phytosociological study and investigation of the germination of the seed bank, the current forest structure, the successional strata, and the regenerative capacity of the remnant. Three different stages comprised this research, the first with a floristic survey of the entire forest remnant, then the phytosociological study of the canopy (PAP above 10 cm) and regeneration strata (PAP 5-10 cm), and at last, the study on the seed bank. The phytosociological survey of the canopy stratum presented 1,368 individuals, with 41 species distributed into 24...
Palavras-chave: 2.05.00.00-9; 2.05.02.00-1 forest remnant; Phytosociology; Seed bank florestal Ecologia.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/14810

Mate recognition in Acanthagrion truncatum (Odonata: Coenagrionidae) - doi: 10.4025/actascibiolsci.v35i3.16138
Provedor de dados: 3
Autores: Guillermo-Ferreira, Rhainer; Universidade de São Paulo; Del-Claro, Kleber; Universidade Federal de Uberlândia.
Sexual and species recognition, along with sexual color dimorphism, play an important role in the reproduction of many animal species. In this article, it was investigated if males of the dimorphic Neotropical damselfly Acanthagrion truncatum are able to recognize mates and differentiate them between co-specific males and hetero-specific females of sympatric species. The results showed misguided mating attempts from males towards other males and Homeoura chelifera females. They also seem able to recognize A. lancea and Telebasis carmesina females as hetero-specifics. This study support the hypothesis that male-male interactions are misdirected sexual behavior and that sympatric morphologically similarspecies may represent visual interference for mate...
Tipo: Observação e manipulação comportamental
Palavras-chave: 2.04.04.00-0 damselfly; Reproductive behavior; Zygoptera; Cerrado Comportamento Animal.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/16138

Parasitic and fungal infections in synanthropic rodents in an area of urban expansion, Aracaju, Sergipe State, Brazil - doi: 10.4025/actascibiolsci.v36i1.19760
Provedor de dados: 3
Autores: Guimarães, Adriana Oliveira; Universidade Tiradentes; Valença, Fábio Menezes; Universidade Tiradentes; Sousa, Joselita Barbosa Silva; Instituto Parreira Horta; Souza, Sandra Araujo; Universidade Tiradentes; Madi, Rubens Riscala; Insituto de Tecnologia e Pesquisa; Melo, Cláudia Moura; Instituto de Tecnologia e Pesquisa.
This study analysed the prevalence of parasitic and fungal infections in rodents in an area of urban expansion, Aracaju, Brazil. Traps were placed in the area from December 2011 to January 2013. Blood samples, faeces and hair were collected from the animals. We collected a total of 47 rodents; 44 were Rattus rattus, and 3 were Mus musculus. Parasitological evaluation revealed the cestode Hymenolepis diminuta infection in both rodent species. The nematodes Aspiculuris tetraptera and Syphacia obvelata were found in M. musculus, and the commensal Entamoeba coli was found in R. rattus. We observed that 69.2% of the R. rattus and 33.3% of the M. musculus were infected with the haemoparasite Babesia sp. The differential leukocyte count revealed normal (72.3%),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.13.00.00-3 synanthropy; Intestinal parasites; Disseminators of fungal diseases; Rattus rattus; Mus musculus Parasitologia.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/19760

Fish histopathology and catalase activity as biomarkers of the environmental quality of the industrial district on the Amazon estuary, Brazil - doi: 10.4025/actascibiolsci.v35i3.18032
Provedor de dados: 3
Autores: Viana, Andréa Pontes; Universidade Federal Rural de Pernambuco; Frédou, Flávia Lucena; Universidade Federal Rural de Pernambuco; Montes, Caroline da Silva; Universidade Federal do Pará; Rocha, Rossineide Martins; Universidade Federal do Pará.
The environment quality of an industrial district on the river Pará, Amazon estuary, Brazil, based on the assessment of histological alterations and on the determination of catalase activity of the hepatic tissue of two fish species, Plagioscion squamossissimus and Lithodoras dorsalis, is provided. Histopathological changes were evaluated semi-quantitatively and qualitatively. Mean Assessment Values (MAV) and Histological Alteration Index (HAI) of organ lesions were calculated for each zone under analysis, with different impact levels: Zone 1 (industrial district, with high contamination risk); Zone 2 (medium risk) and Zone 3 (minimum risk). Strong positive catalase activity and histopathological changes were reported in Zone 1. None of the specimens of...
Palavras-chave: 2.04.06.01-0; 2.06.03.00-2 biomonitoring; Liver; Industrialization; Northern Brazil 2.06.03.00-2 Biomonitoring  liver  industrialization  North Brazil. 2.06.03.00-2.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/18032

Establishment and content of sugars and phenols in Physalis callus obtained from different explants and concentrations of bap and naa  - doi: 10.4025/actascibiolsci.v36i1.18074
Provedor de dados: 3
Autores: Bertoncelli, Douglas Junior; Universidade Tecnológica Federal do Paraná; Oliveira, Marisa de Cacia; Universidade Tecnológica Federal do Paraná; Passos, Amanda Izabel dos; Universidade Tecnológica Federal do Paraná; Ariati, Ana Claudia; Universidade Tecnológica Federal do Paraná; Ortolan, Alexandre Osmar; Universidade Tecnológica Federal do Paraná; Witt, Elaine de Paula; Universidade Tecnológica Federal do Paraná.
Obtaining cells of Physalis pubescens is of interest for studies of primary and secondary metabolic pathways, in the search for new active molecules. Our objectives were to evaluate the regeneration potential of explants from different parts of the plant, growth regulators to be used, and the determination of the growth curve of the callus. We used explants of leaf, root, stem and petiole, cultured on Murashige and Skoog medium with different concentrations of 6-benzylaminopurine and a-naphthaleneacetic acid. The explants from stem and petiole had a higher regeneration potential of the shoot to the treatment with 0.5 mg L-1 6-benzylaminopurine, and the explants of leave and root emitted more roots, with lower production of callus. The tests showed that the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.03.00.00-0 cell; Growth; Phenols; Sugars Botânica-biotecnologia.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/18074

Genetic Analysis of Izoenzymes Polymorphisms in Silkworm (Bombyx mori L.) Strains - doi: 10.4025/actascibiolsci.v35i2.13102
Provedor de dados: 3
Autores: Ronqui, Ludimilla; Fundação Universidade Federal de Rondônia; Fernandez, Maria Aparecida; Universidade Estadual de Maringá; Takasusuki, Maria Claudia Colla Ruvolo; Universidade Estadual de Maringá.
This work carried out to evaluates the polymorhism in the silkworm of different lineages using the isoenzymes electrophoresis to detect biochemical markers and to investigate the genetics of populations for those lineages. They were used as samples individual extracts of silk glands of second day old larvas of the fifth instar, originating from seven Japanese lineages and eight pure Chinese lineages maintained by the Cocamar-Cooperativa Agroindustrial de Maringá. The isozymes acid phosphatase (ACP), alkaline phosphatase (AKP) and carbonic anhydrase (CA) they were submitted to the electrophoresis in starch gels 14%. The esterases (EST) were analyzed in polyacrylamide gels to 10% and stained with α and b-naphtyl acetate. The total of 21 loci was detected,...
Palavras-chave: 2.02.04.00-0 silkworm; Genetic polymorphism; Isoenzymes Genética animal.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/13102

Length-weight relationship and reproductive activity of the Leporinus piau Fowler, 1941 captured in a small deactivated hydropower plant - doi: 10.4025/actascibiolsci.v35i3.17675
Provedor de dados: 3
Autores: Padilha, Geraldo Eustáquio Valente; Faculdade de Ciências, Filosofia e Letras do Alto São Francisco / Faculdade Pitágoras; Carvalho, Júnia Aparecida Bernardes Afonso de; Faculdade de Ciências, Filosofia e Letras do Alto São Francisco; Boncompagni-Júnior, Orion; Faculdade de Ciências, Filosofia e Letras do Alto São Francisco; Domingos, Fabrício Flávio Theophilo; Universidade Federal de Minas Gerais; Thomé, Ralph Gruppi; Universidade Federal de São João Del Rei / Universidade Federal de Juiz de Fora.
Reproductive activity of ‘piau gordura’ Leporinus piau was studied using biometric, macroscopic and microscopic analysis. A total of 74 specimens of L. piau were collected quarterly from January to December 2005 in a small deactivated  hydropower plant located at Jorge Pequeno Stream and preserved in a fixative solution until analysis. The alterations after fixation were evaluated. The stages of gonadal maturation were determined by histology and gonadosomatic index (GSI). The females and males in the spawning capable and regressing stage were registered from October to December. L. piau is total spawning and the HSI (hepatossomatic index), SRI (stomach repletion index) and CFI (coelomic fat index) of females and males did not showed a statistical...
Tipo: Morphological studies
Palavras-chave: Anostomidae; Reproduction; Biological indexes; Tributary; São Francisco river.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/17675

Ecotoxicity of natural insecticide based on tobacco plant extract and hematological effects on the Nile tilapia (Oreochromis niloticus).
Provedor de dados: 3
Autores: Millan, Debora Cristina; Centro Universitário Central Paulista; Shiogiri, Natália Sayuri; Universidade Federal de São Carlos; Souza, Naiara Elisabete da Silva de; Universidade Federal de São Carlos; Silva, Hugo Ribeiro da; Universidade Federal de São Carlos; Fernandes, Marisa Narciso; Universidade Federal de São Carlos.
Natural insecticides derived from plant extracts have been used as an alternative to synthetic products in order to reduce environmental contamination. The present study aimed to examine the effects of Fumydro®, a natural insecticide based in the tobacco plant Nicotiana tabacum, on the Nile tilapia (Oreochromis niloticus) by determining the 48-h LC50 and evaluating their effects on hematological variables. Adult specimens of O. niloticus were exposed to four Fumydro® concentrations (200, 300, 400 and 500 μL L-1). The 48-h LC50 of Fumydro® was determined as 370 ± 50 μL L-1. Surviving fish showed increasing in the red blood cells, hemoglobin concentration, mean corpuscular hemoglobin and mean corpuscular hemoglobin concentration. The thrombocytes did not...
Palavras-chave: Ecologia toxicity; Erythrocytes; Leukocytes; Teleost; Thrombocytes 2.05.03.00-8.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/14131

Influence of rainfall on the trophic status of a brazilian semiarid reservoir - doi: 10.4025/actascibiolsci.v35i4.18261
Provedor de dados: 3
Autores: Chaves, Francisco Ítalo Barbosa; Universidade Federal do Ceará/Aluno de doutorado; Lima, Paulo de Freitas; Universidade Federal do Ceará; Leitão, Renato Carrhá; Embrapa Agroindústria Tropical; Paulino, Walt Disney; Companhia de Gestão de Recursos Hídricos do Estado do Ceará; Santaella, Sandra Tédde; Universidade Federal do Ceará.
This study evaluated the trophic conditions of the reservoir located in the urban perimeter of the town General Sampaio, semiarid region of the Ceará State, Brazil and its relationship with seasonal variation in rainfall between 2010 and 2011. It was obtained data for Secchi disk transparency, total phosphorus, and chlorophyll a to calculate the Trophic State Index (TSI), as well as rainfall data. The Trophic State Index (TSI) proposed by Carlson (1977) and modified by Toledo Junior (1990) was used to test the influence of the seasonal variation in rainfall on hydrological variables and on trophic conditions of the reservoir in 2010 and 2011. There was seasonal variability in variables analyzed between climatic periods (rainy and dry) and trophic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.05.02.00-1 Brazilian semiarid; Reservoir; Trophic state index ECOLOGIA DE ECOSSISTEMAS.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/18261

Population parameters of the shrimp Xiphopenaeus kroyeri (Heller, 1862) (Crustacea, Penaeidae), caught by artisanal fisheries in Anchieta, Espírito Santo State - doi: 10.4025/actascibiolsci.v35i2.13408
Provedor de dados: 3
Autores: Eutrópio, Frederico Jacob; Universidade Vila Velha; Mariante, Fátima Lieberenz Falleiros; Universidade Vila Velha; Ferreira Junior, Paulo Dias; Universidade Vila Velha; Krohling, Werther; Universidade Vila Velha.
The fishery on Penaeidae shrimp is done all over the Brazilian coast, especially the seabob shrimp (Xiphopenaeus kroyeri). It is captured in large quantities in the Southeast and Southern  Brazil. In order to study the population structure of X. kroyeri from Anchieta Municipality, Espírito Santo  State, during the period from January to December 2008, monthly samplings with one-hour-long were conducted to verify the number of individuals, biomass, sex, total length and gonad maturity stage. The specimens had total length ranging from 2.96 to 9.96 cm, and females were larger than males. It is suggested that the population of X. kroyeri presents patterns of recruitment and reproduction similar to those of the Northeast region. The estimated size of first...
Palavras-chave: Seabob shrimp; Estuary  gonadal maturation; Penaeidae; Trawling fishery; Brazilian Southeast.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/13408

Influence of the number of feeding environments on the performance of bullfrog tadpoles - doi: 10.4025/actascibiolsci.v36i1.16757
Provedor de dados: 3
Autores: Castagna, Airton Antonio; Centro Universitário Augusto Motta; Seixas Filho, José Teixeira; Centro Universitário Augusto Motta; Rodrigues, Eliane; Centro Universitário Augusto Motta; Mello, Sílvia Conceição Reis Pereira; Centro Universitário Augusto Motta; Lima, Jorge Luiz Pereira; Centro Universitário Augusto Motta; Pereira, Marcelo Maia; Universidade Estadual Paulista “Júlio de Mesquita Filho”.
Feeding is one of the major factors that influences the growth and development of animals, justifying thus the present experiment that analyzed the effect of the number of feeding environments on the performance of bullfrog tadpoles through the growth (weight and length) and performance (food remains, average feed intake, average weight gain, and feed conversion). The treatments consisted of subunits of two, four, and eight feeding environments in the experimental units at disposal for the tadpole population, and one without subdivisions, comprising a single environment, during 60 experimental days. The design was completely randomized, with four treatments and three replications. The values were tested using an analysis of variance and Duncan test (α =...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquicultura; Ranicultura performance; Nutrition; Frog farming; Sustainable production Ranicultura performance; Nutrition; Frog farming; Sustainable production.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/16757

Variations in human renal arteries - doi: 10.4025/actascibiolsci.v35i2.11178
Provedor de dados: 3
Autores: Soares, Tania Regina Santos; Universidade Estadual de Maringá; Ferraz, Juliana Soares; Faculdade Ingá; Dartibale, Camila Buziquia; Universidade Estadual de Maringá; Oliveira, Inandiara Rafaella Marco; Faculdade Ingá.
Kidneys are especially irrigated by a pair of arteries originated from the aorta artery. The presence of additional renal arteries is the most frequent variation in this vascularization, an aspect important to be known in renal surgeries and radiological procedures (SAMPAIO; PASSOS, 1992). This study aimed to observe the prevalence of numeric variation and the origin of the additional renal artery. For this purpose, 24 cadavers and 26 blocks were used; each block contained the kidneys and their respective arteries and veins, the abdominal aorta and inferior vena cava, taken from adults of different ethnicity and genders, from the Department of Morphological Science, State University of Maringá (DCM/UEM) and Laboratory of Anatomy, Ingá Faculty (UNINGÁ)....
Tipo: Estudo morfológico
Palavras-chave: 2.06.04.01-7 additional; Multiple; Anatomy; Vascularization; Kidney; Vessels Anatomia humana.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/11178

Early ontogeny of Clarias gariepinus (Siluriformes, Clariidae) and aspects of its invasion potential in natural freshwater environments - doi: 10.4025/actascibiolsci.v35i3.12471
Provedor de dados: 3
Autores: Kipper, Darlon; Universidade Estadual de Maringá; Taguti, Tatia Leika; Universidade Estadual de Maringá; Bialetzki, Andréa; Universidade Estadual de Maringá; Makrakis, Maristela Cavicchioli; Universidade Estadual do Oeste do Paraná; Baumgartner, Gilmar; Universidade Estadual do Oeste do Paraná; Sanches, Paulo Vanderlei; Universidade Estadual do Oeste do Paraná.
This study aimed to describe the early development of Clarias gariepinus, a species that has been introduced into various watersheds worldwide, in order to help the identification of its eggs, larvae and juveniles in natural environments. The material used was obtained via induced spawning during 1999. After spawning, the periodicity of sampling varied according to ontogenic development. We analyzed 12 eggs, 146 larvae and 6 juveniles. Newly fertilized eggs are spherical, with a double membrane, the density of which varies. Initially the larvae have little pigmentation but this intensifies during development. They have four pairs of well-developed barbels, an elongated body, long dorsal and anal fins, no adipose fin and vesicles surrounding the finfold and...
Tipo: Desenvolvimento ontogênico
Palavras-chave: 2.05.00.00-9 african catfish; Invasive species; Larvae; Juvenile of fish Ecologia.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/12471

Biochemical and cellularchanges in Oreochromis niloticus related to the water pollution of a degraded river - doi: 10.4025/actascibiolsci.v35i3.13207
Provedor de dados: 3
Autores: Cruz, Zilma Maria Almeida; Universidade Vila Velha; Castro, Rodrigo Roque Lesqueves de; Universidade Vila Velha; Canal, Adriana; Azevedo Júnior, Romildo Rocha; Universidade Vila Velha; Silva, Ary Gomes da; Universidade Vila Velha; Ramos, Alessandro; Universidade Vila Velha.
The effects of polluted water at three sites in the Marinho River, Brazil, on Oreochromis niloticus (Nile tilápia) were investigated using histological, hematological and biochemical approaches. Fish exposed to the impacted water demonstrated that histological changes in gills were accompanied by nuclear and micronuclei abnormalities in cells. The activity of liver and plasma biomarkers (alkaline phosphatase (ALP), acid phosphatase (ACP), alanine aminotransferase (ALT), aspartate aminotransferase (AST) and liver glutathione S-transferase (GST)) showed an expressive change due to the. The results were also correlated with the highest levels of Cu+2, Zn+2 and Mn+2 in the water. The data of this study evidenced the importance of using a set of biomarkers to...
Palavras-chave: Aminotransferases; Phosphatases; Glutathione-S-transferase; Histology; Cell abnormality; Tilapia.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/13207

Emergence of Chironomidae (Insecta: Diptera) in a floodplain lake of the upper Paraná river, Mato Grosso do Sul State, Brazil   - doi: 10.4025/actascibiolsci.v36i1.19323
Provedor de dados: 3
Autores: Butakka, Cristina Márcia de Menezes; Universidade do Mato Grosso; Trivinho-Strixino, Susana; Universidade Federal de São Carlos; Pinha, Gisele Daiane; Universidade Estadual de Maringá; Takeda, Alice Michiyo; Universidade Estadual de Maringá.
To investigate the emergence of Chironomidae in different habitats of a floodplain lake of the upper Paraná river floodplain, four collection points were established: marginal regions (one with numerous macrophytes species, other dominated by only Polygonum sp.), central region and linking channel. Adults were captured by surface emergence traps assembled every three months, from May 2001 to March 2002. The traps remained for a period of about 48 hours, obtaining quantitative data for richness and abundance. 944 adults distributed into three subfamilies and 40 taxa were captured. The taxa identified at the species level were: Goeldichironomus neopictus, G. petiolicola, G. maculatus, Tanytarsus ligulatus, Parachironomus atroari, P. guarani and P. cayapo....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquatic insects; Habitats; Neotropical floodplain; Diversity; Emergence traps Ecologia e Biodiversidade.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/19323

Spatial and temporal fluctuation of phytoplankton functional groups in a tropical reservoir - doi: 10.4025/actascibiolsci.v35i3.12988
Provedor de dados: 3
Autores: Moreti, Lívia Oliveira  Ruiz; Universidade Estadual de Maringá; Martos, Luana; Universidade Estadual de Maringá; Bovo-Scomparin, Vânia Mara; Universidade Estadual de Maringá; Rodrigues, Luzia Cleide; Universidade Estadual de Maringá.
Along the horizontal axis of reservoirs are generally recognized three zones (fluvial, transition and lacustrine) with distinct hydrodynamic and physical, chemical and biological properties. Quarterly samplings were conducted in 2002, in the limnetic region from each zone, at different depths of a tropical reservoir. To test the hypothesis that highest biomass (biovolume) of phytoplankton are found in the transition zone, the PERMANOVA analysis was realized. 106 taxa were recorded. Significant differences between biovolume values of the three zones were not verified (pseudo F = 0,89; p = 0,55). Higher values of biomass were obtained in lacustrine and transition zones of the reservoir. The functional group (FG) N (Cosmarium spp.) was dominant in these...
Palavras-chave: 2.05.02.00-1 functional group; Biovolume; Horizontal distribution; Oligotrophic reservoir 2.03.00.00-0.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/12998

High levels of total ammonia nitrogen as NH4+ are stressful and harmful to the growth of Nile tilapia juveniles - doi: 10.4025/actascibiolsci.v35i4.17291
Provedor de dados: 3
Autores: Silva, Francisco Jackes Rodrigues da; Universidade Federal do Ceará; Lima, Francisco Roberto dos Santos; Universidade Federal do Ceará; Vale, Diego Alves do; Universidade Federal do Ceará; Sá, Marcelo Vinícius do Carmo e; Universidade Federal do Ceará.
This study determined whether high levels of total ammonia nitrogen (TAN) as NH4+ are harmful to the growth performance of Nile tilapia juveniles. Fingerlings (0.31 ± 0.04 g) were assigned to 30 polyethylene 100-L tanks in a roofed room for 12 rearing weeks. There were increasing levels of TAN by increased NH4Cl application rates (0.0; 0.25 and 0.50 g tank-1 week-1) at three conditions of water pH (acidic, 6.2 ± 0.5; neutral, 7.2 ± 0.8 and alkaline, 8.8 ± 0.3). The application of HCl to acidic tanks caused 100% of TAN to be converted into NH4+. The poorest growth performance results were observed for the alkaline tanks subjected to the highest application of NH4Cl. In acidic tanks, fish survival has dropped in those tanks under the highest application rate...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquicultura non-ionized ammonia; Ionized ammonia; Fish culture; Water quality qualidade da água.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/17291

Study on the development of frontal sinuses by morphometric analysis of the skull - doi: 10.4025/actascibiolsci.v35i2.13334
Provedor de dados: 3
Autores: Silva Filho, Antônio Felix da; Universidade Federal de Pernambuco; Galvão, André Pukey Oliveira; Universidade Federal de Pernambuco; Galvão, Rosane Costa da Silva; Universidade Federal de Pernambuco; Fraga, Kleber Botelho; Universidade Federal de Pernambuco; Magalhães, Carolina Peixoto; Universidade Federal de Pernambuco.
The frontal sinuses are cranial areas of clinical, forensic and pathology importance whose development mechanisms are still poorly defined. Nasal airflow and brain development are two of the main theories. Current analysis debates whether they are the real determinants of frontal sinuses growth, which may be proved by the skull’s morphometric analysis. Four groups of measures related to the external cranial architecture, the pyriform aperture, orbital cavities and frontal sinuses were defined. Thirty-three skulls of individuals, mean age 68 years, from the Laboratory of Anatomy of the Academic Centre of Victoria – UFPE – Brazil, were used. Statistical analysis showed total agenesis of the frontal sinus in 18.2% of the skulls. There was significant...
Palavras-chave: 2.06.04.01-7 paranasal sinuses; Pyriform aperture; Craniometry Anatomia Humana.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/13334

Liver histopathological changes in breeding bullfrogs - doi: 10.4025/actascibiolsci.v35i4.15981
Provedor de dados: 3
Autores: Seixas Filho, José Teixeira de; Centro Universitário Augusto Motta / Fundação Instituto de Pesca do Estado do Rio de Janeiro; Hipólito, Márcio; Universidade Estadual Paulista; Pereira, Marcelo Maia; Universidade Estadual Paulista; Martins, Ana Maria C. R. Pinto da Fonseca; Instituto Biológico de São Paulo; Rodrigues, Eliane; Centro Universitário Augusto Motta; Mello, Sílvia Conceição Reis Pereira; Centro Universitário Augusto Motta.
In order to complement the histopathological study of juveniles and tadpoles of the bullfrog, Lithobathes catesbeianus, fed commercial diet used by frog farms in Rio de   Janeiro, containing 40% crude protein, we performed necropsy and histopathology of the liver to establish a relationship between the quality of crude protein in the diet and animal health. For this, it was used twenty breeding male bullfrogs, with average weight 591.30 g (± 91.90 g) and length 165.02 mm (± 14.22 mm), and ten females with average weight and length of 629.80 g (± 134.47 g) and 169.32 mm (± 21.82 mm). The liver histopathology showed hyperemia, high number of melanomacrophages and cytoplasmic rarefaction, probably due to protein deficiency and fatty liver degeneration and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquicultura; Ranicultura aquaculture; Animal nutrition; Protein malnutrition; Histopathology; Frog culture Ranicultura.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/15981

Biological characterization of the colombian isolate Heterorhabditis sp. SL0708 (Rhabditida: Heterorhabditidae - doi: 10.4025/actascibiolsci.v35i3.16034
Provedor de dados: 3
Autores: Torres, Maria Camila Mejia; Pontificia Universidad Javeriana; Aponte, Adriana Sáenz; Pontificia Universidad Javeriana.
Heterorhabditis sp SL0708 (Rhabditida: Heterorhabditidae) is a native entomopathogenic nematode from Alcalá, Valle del Cauca (Colombia), a natural enemy of insects that can be used for controlling Plutella xylostella L, Conotrachelus psidii Marshall and Delia platura (Meigen); however its biological characterization is unknown. In order to know about the infective capacity of the isolate, tests were made with last instar larvae of Galleria mellonella (Lepidoptera: Pyrallidae) on penetration, one by one, exposure time, dose response and foraging strategy. The average infecting juveniles (IJ) entering larvae was 3 (1.5%). In the one-on-one test, larvae mortality ranged between 8.3 and 16.7%. There was no significant difference (p &amp;lt; 0.05) between...
Palavras-chave: 2.04.00.00-4 entomopathogenic nematodes; Infective juvenile; Penetration; Heterorhabditidae; Virulence Zoologia.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/16034

Parasites in Curimata cyprinoides (Characiformes: Curimatidae) from eastern Amazon, Brazil - doi: 10.4025/actascibiolsci.v35i4.19649
Provedor de dados: 3
Autores: Tavares-Dias, Marcos; Empresa Brasileira de Pesquisa Agropecuária; Neves, Ligia Rigôr; Empresa Brasileira de Pesquisa Agropecuária; Pinheiro, Douglas Anadias; Universidade Federal do Amazonas; Oliveira, Marcos Sidney Brito de; Universidade do Estado do Amapá; Marinho, Renata das Graças Barbosa; Universidade Federal do Amapá.
This work is the first study on parasitic fauna of Curimata cyprinoides Linnaeus, 1766 (Curimatidae) and the host-parasite relationship. The total of 154,740 parasites such as Ichthyophthirius multifiliis (Ciliophora), trophozoite of Spironucleus sp. (Hexamitidae), Urocleidoides sp. (Monogenoidea), Digenea gen. sp. and Polymorphus sp. (Polymorphidae) were collected. The component community showed low diversity (HB = 0.004 ± 0.020) and parasite species richness (1.4 ± 0.6). However, I. multifiliis and Urocleidoides sp. were prevalent and with higher intensity on the host population and also aggregated the distribution pattern. The occurrence of these ectoparasites in C. cyprinoides may be a consequence of its alimentary diet. Positive correlation between...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sanidade de Animais Aquáticos ecology; Gills; Freshwater fish; Monogenoidea; Protozoans.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/19649

Effect of the chronic administration of caffeine on adipose mass and lipid profile of Wistar rats - doi: 10.4025/actascibiolsci.v35i2.11085
Provedor de dados: 3
Autores: Nakagawa, Priscila; Universidade Estadual de Maringá; Pedrosa, Maria Montserrat Diaz; Universidade Estadual de Maringá.
This work aimed at verifying the effect of the chronic ingestion of caffeine on body weight and adiposity of Wistar rats. Sixteen male Wistar rats weighting on average 240 g were divided into two groups, one control and the other caffeine-treated (5 mg kg-1, orally) for five weeks. At the end, the groups were evaluated for their differences in body weight; weight of the periepididymal, retroperitoneal, subcutaneous and mesenteric fat pads; size of the retroperitoneal adipocytes; liver and heart weight; glycemia and plasma lipids. Statistically significant differences were observed in adipocyte size and total serum cholesterol, while the results for the other parameters were not statistically different. Therefore, this study showed that, using an oral dose...
Palavras-chave: 2.07.01.00-4 adipocytes; Fat; Lipolysis; Cholesterol fisiologia geral.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/11085

Pancreatic islets isolated from β2 adrenergic receptor knockout mice show reduced insulin secretion in response to nutrients - doi: 10.4025/actascibiolsci.v35i3.15842
Provedor de dados: 3
Autores: Marçal, Anderson Carlos; Universidade Federal de Sergipe; Davel, Ana Paula Couto; Universidade Estadual de Campinas; Carpinelli, Angelo Rafael; Universidade de São Paulo; Brum, Patrícia Chakur; Universidade de São Paulo; Rossoni, Luciana Venturini; Universidade de São Paulo; Carvalho, Carla Roberta de Oliveira; Universidade de São Paulo.
Activation of β2 adrenergic receptors by catecholamine or catecholamine-mimetic substances may enhance insulin secretion. We herein investigated KCl- and nutrient-stimulated insulin secretion in pancreatic islets isolated from β2 knockout (β2KO) mice. β2KO mice showed reduced body weight, fasting hypoglycaemia associate to a similar fasting insulinemia compared to control. β2KO mice also showed reduced glucose tolerance despite the higher sensitivity to insulin. Glucose-induced insulin secretion was impaired in pancreatic islets isolated from β2KO mice. Leucine-induced (20mM) insulin secretion was diminished in pancreatic islets isolated from β2KO mice when compared to control one. The depolarizing effect of KCl on insulin secretion was also impaired in...
Tipo: Dosagem do hormônio insulina ; parâmetros corporais ; teste de tolerância à glicose ; Teste de tolerância a insulina
Palavras-chave: 2.06.01.00-0; 2.07.02.00-0; Adrenergic receptors; Pancreatic beta cells; Glucose  leucine (Citologia e Biologia Celular); (Fisiologia de órgãos e sistemas).
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/15842

Dioxins and polychlorinated biphenyls concentrations in Larus dominicanus. Case study: Marambaia island, Sepetiba bay, Rio de Janeiro State, Brazil - doi: 10.4025/actascibiolsci.v35i3.18344
Provedor de dados: 3
Autores: Ferreira, Aldo Pacheco; Fundação Oswaldo Cruz; Wermelinger, Eduardo Dias; Fundação Oswaldo Cruz.
Seabirds play a significant role as bioindicators: they are conspicuous, relatively easy to observe, well-established studied group of organisms, and in the focus of public interest due to pollution in aquatic ecosystem. Systematically, a significant number of man-made chemicals have been introduced in the marine environment and represent the major problem arising in the development worldwide. Many of these chemical contaminants are persistent, known to bioaccumulate and biomagnify through the aquatic food web, affecting species associated with aquatic systems. Dioxins [polychlorinated dibenzo-p-dioxins (PCDD), dibenzofurans (PCDF)] and polychlorinated biphenyls (PCB) concentrations were measured in Kelp gull Larus dominicanus collected from 2006 to 2011...
Tipo: Análises químicas (or`gânicas)
Palavras-chave: 2.05.02.00-1 marine pollution; Environmental exposure; Dioxins; Polychlorinated biphenyls ecologia de ecossistemas.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/18344

Use of the anabolic steroid nandrolone decanoate associated to strength training in Wistar rats - doi: 10.4025/actascibiolsci.v35i2.15513
Provedor de dados: 3
Autores: Andreato, Leonardo Vidal; Universidade Estadual de Maringá/Universidade de São Paulo; Esteves, João Victor Del Conti; Universidade Estadual de Maringá/Universidade de São Paulo; Almeida, Felipe Natali; Universidade Estadual de Maringá/Universidade de São Paulo; Ribeito, Tatiane Aparecida da Silva; Universidade Estadual de Maringá; Barrena, Helenton Cristhian; Universidade Estadual de Maringá; Peres, Sidnei Barnabé; Universidade Estadual de Maringá; Moraes, Solange Marta Franzói de; Universidade Estadual de Maringá.
Anabolic steroids have been constantly used among athletes and physically active individuals. Adverse effects of such use are reported in the literature. However, little is known about the effects of anabolic steroid use associated with strength training. Thus, this research aimed to identify possible morphophysiological alterations in Wistar rats treated with the anabolic steroid nandrolone decanoate and submitted to strength training. Twenty Wistar rats were divided in four groups: sedentary control (SC), sedentary hormone (SH), trained control (TC) and trained hormone (TH). After the experimental protocol period, animals were killed and body weight, adiposity, renal and hepatic injury markers, plasmatic lipid profile, glycemia, and insulinemia were...
Palavras-chave: Morfofisiologia animal anabolic steroids; Nandrolone decanoate; Strength training Fisiologia do esforço; Farmacologia.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/15513

Bioassessment using benthic macroinvertebrates of the water quality in the Tigreiro river, Jacuí Basin - doi: 10.4025/actascibiolsci.v35i4.18934
Provedor de dados: 3
Autores: Copatti, Carlos Eduardo; Universidade Federal da Bahia; Ross, Marcelo; Universidade de Cruz Alta; Copatti, Bethânia Ross; Universidade Federal da Bahia; Seibel, Laidines Fagundes; Universidade de Cruz Alta.
This study aimed to evaluate the water quality in the Tigreiro river, Jacuí river Basin, using different approaches. Benthic macroinvertebrates were sampled in July 2010 (winter) and February 2011 (summer) at five sites. In this study were analyzed: microbiological, physical and chemical variables, benthic macroinvertebrates richness and diversity, rapid ecological assessment protocol and benthic biotic indices (% EPT, BMWP’-IAP, ASPT, SOMI). A total of 5,852 individuals were collected belonging to 31 taxa of three Phyla: Annelida, Mollusca and Arthropoda. Chironomidae was the most abundant taxon (63.70%). A reduction in richness, diversity H’ and evenness J’ was observed from the initial stretches to the end stretches of Tigreiro river. The use of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Limnologia Chironomidae; Diversity; Benthic biotic indices; Domestic effluents; % EPT Biodiversidade.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/18934

Local ecological knowledge is not a useful source of information concerning impacts caused by non-native Nile tilapia on fishery stocks - doi 10.4025/actascibiolsci.v35i3.18418
Provedor de dados: 3
Autores: Brasil, Jandeson; Universidade Federal do Rio Grande do Norte; Bastos, Fernando; Universidade Federal do Rio Grande do Norte; Mourão, José da Silva; Universidade Estadual da Paraíba.
Exotic freshwater fish can have deleterious effects on local biodiversity, although these impacts often only become apparent many years after the introduction. Local Ecological Knowledge (LEK) may be a useful source of information in situations where formal technical studies are insufficient, but few works have examined the reliability of information generated through this approach. We examined the reliability of LEK by investigating the impacts of Nile tilapia on fishery stocks in an artificial reservoir in northeastern Brazil. We gathered LEK from 29 experienced fishermen and then confronted this information with official fishery statistics from the same site. Twenty-two fishermen stated that total catch in the Gargalheiras Reservoir had declined over...
Palavras-chave: 2.05.00.00-9 ethnoknowledge; Artisanal fisheries; Fishermen; Gargalheiras reservoir; Oreochromis niloticus Ecologia.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/18418

Spatial variation of periphyton structural attributes on Eichhornia crassipes (Mart.) Solms. in a tropical lotic ecosystem - doi: 10.4025/actascibiolsci.v35i3.17879
Provedor de dados: 3
Autores: Pereira, Thaís Almeida; Universidade Federal do Espirito Santo; Felisberto, Sirlene Aparecida; Universidade Federal de Goiás; Fernandes, Valéria Oliveira; Universidade Federal do Espírito Santo.
This study evaluated the influence of physical, chemical and physico-chemical variables of water on the biomass of periphyton community and verified the differences between six sampling sites over the course of São Mateus river: two upstream of the city of São Mateus, Espírito Santo State (E1, E2), two along (E3, E4), and two downstream of the city (E5, E6). The periphyton was collected from roots of Eichhornia crassipes (Mart.) Solms. Samplings were undertaken every week in September and October 2010. The periphyton biomass was estimated through chlorophyll ‘a’, biovolume, dry mass, ash-free dry mass, and ash. Higher values of chlorophyll ‘a’ were found at E1, while the total biovolume featured greater values in E4 and E3. Regarding the values of...
Tipo: Estudo de biomassa
Palavras-chave: Perifiton  biomassa  ecossistema lótico chlorophyll ‘a; Dry mass; Biovolume Ecologia.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/17879

Effects of a native and a non-native macrophyte species of Hydrocharitaceae on Chironomidae and Oligochaeta assemblages structure doi: 10.4025/actascibiolsci.v35i3.10855
Provedor de dados: 3
Autores: Behrend, Rômulo Diego de Lima; Universidade Estadual de Maringá; Teixeira, Mariana Carolina; Universidade Estadual de Maringá; Fernandes, Sue Ellen Prata; Universidade Estadual de Maringá; Camargo, Janielly Carvalho; Universidade Estadual de Maringá; Rosin, Gisele Cristina; Universidade Estadual de Maringá; Takeda, Alice Michiyo; Universidade Estadual de Maringá.
This study investigated the structure of the Oligochaeta and Chironomidae assemblages associated with monospecific stands of two submerged macrophyte species: Egeria najas and Hydrilla verticillata. Samplings were carried out in Leopoldo Backwater and Paraná  river, in August 2008. To assess the structure of Oligochaeta and Chironomidae assemblage in each macrophyte we calculated: species density, richness, diversity, and evenness. A detrended correspondence analysis (DCA) was used to summarize Oligochaeta and Chironomidae assemblages composition. The highest values of species density and richness for the two groups were recorded in H. verticillata. Although there were no significant differences in density, richness and Shannon diversity, the assemblage...
Tipo: Distribuição espacial
Palavras-chave: Ecology upper Paraná river; Submerged macrophytes; Hydrilla verticillata; Egeria najas; Invasion; Naididae Ecology.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/10855

Evaluation of the genotoxicity of zinc oxide-eugenol cement to Allium cepa L. - doi: 10.4025/actascibiolsci.v35i4.17925
Provedor de dados: 3
Autores: Rezende, Elisângela de Fátima; Centro Universitário de Lavras; Mendes-Costa, Maria Cristina; Centro Universitário de Lavras; Fonseca, Johnson Campideli; Centro Universitário de Lavras; Ribeiro, Alex Oliveira; Centro Universitário de Lavras.
Evaluation of the Genotoxicity of Zinc Oxide-Eugenol Cement in Allium cepa L. Dental materials can induce local and systemic effects. The Allium cepa assay was used to evaluate the genotoxicity and/or cytotoxicity of zinc oxide and eugenol (ZOE) at different proportions. The ZOE solution was tested at the concentration of 1 drop of eugenol (in each drop of liquid, the approximate concentration of eugenol is 85%) and 1 portion of zinc oxide cement (treatment I), and twice the concentration of eugenol (treatment II). Treated roots appeared to be yellowish-brown, fewer in number, thicker and less turgid compared with the control, suggesting a cytotoxic activity of ZOE. A significant difference was found in the root size between the control and treatment II....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.00.00.00-6; 2.02.00.00-5; 2.02.06.00-3 cytotoxicity; Micronucleus (MN); Dental materials; Mutagenesis Genética.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/17925

Growth of the microalgae Tetraselmis tetrathele and nitrate depletion in culture medium Guillard f/2 and Conway - doi: 10.4025/actascibiolsci.v35i2.13971
Provedor de dados: 3
Autores: Coelho, Anderson Alan da Cruz; Instituto Federal do Ceará; Barros, Mário Ubirajara Gonçalves; Universidade Federal do Ceará; Bezerra, João Henrique Cavalcante; Universidade Federal do Ceará; Silva, José William Alves da; Universidade Federal do Ceará; Moreira, Ricardo Lafaiete; Universidade Federal do Ceará; Farias, Wladimir Ronald Lobo; Universidade Federal do Ceará.
This study aimed to evaluate the effect of nutrient depletion during the cultivation of the microalgae Tetraselmis tetrathele, and to verify the algal growth and productivity in different culture media (Guillard f/2 and Conway). The experiment was conducted in nine-liter containers, with working volume of eight liters, salinity 35 ± 2‰, temperature 28 ± 1°C, with constant light and aeration, around 200 μE cm-2 s-1 and 3 L air min.-1. Results showed that microalgae development caused nutrient depletion, since we observed an inversely proportional relationship between nitrate concentration and algal biomass during the cultivation. Regarding the culture media, a higher algal productivity was observed in the cultivation developed in Conway medium (p &amp;lt;...
Tipo: Estudos morfológicos
Palavras-chave: Ciências Agrárias; Recursos Pesqueiros e Engenharia de Pesca algal concentration; Yield; Nutrients Biologia Geral.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/13971

Allozyme analysis of the four species of Hypostomus (Teleostei: Loricariidae) from the Ivaí river, upper Paraná river basin, Brazil - doi: 10.4025/actascibiolsci.v35i4.16355
Provedor de dados: 3
Autores: Paiva, Suzana de; Universidade Estadual de Maringá; Zawadzki, Claudio Henrique; Universidade Estadual de Maringa; Ruvulo-Takasusuki, Maria Claudia Colla; Universidade Estadual de Maringá; Lapenta, Ana Silvia; Universidade Estadual de Maringá; Renesto, Erasmo; Universidade Estadual de Maringá.
Allozyme electrophoresis analysis were performed in four species of Hypostomus (Loricariidae), H. albopunctatus, H. hermanni, H. regani, e Hypostomus sp. 1/NUP 5612 from the Ivaí river, a tributary of the upper Paraná river. The study of 14 loci revealed diagnostic characters and exclusive alleles in a low frequency. The heterozygosity ranged from 0.000 in H. albopunctatus to 0.199  in H. hermanni, which was higher than the heterozygosity in other samples of Hypostomus in literature, as well as in other fish groups. Hypostomus albopunctatus and H. regani revealed higher similarity (I = 0.804), while H. hermanni and Hypostomus sp. 1/NUP 5612 showed the least genetic identity (I = 0.569). All samples were genetically distinguished, despite there were several...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.02.00.00-5 catfish; Heterozygosity; Neotropical fishes; Genetic variability; Siluriformes Genética.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/16355

Taxonomic relationships in some Vicia species from Egypt, based on seed morphology and SDS-PAGE of seed proteins - doi: 10.4025/actascibiolsci.v35i4.19345
Provedor de dados: 3
Autores: Abdel Khalik, Kadry Nabeh; Sohag University, Faculty of Science; Al Gohary, Iman Hussien.
The seed morphology and seed proteins of 11 Vicia taxa from Egypt were studied. Macro- and micro-morphological characters, including seed shape, color, size, hilum shape and seed sculpture were described and analyzed. The secondary sculpture of the cell wall varies from papillose in nearly all Vicia species to lophate in V. hirsuta. Further, the seed proteins of studied taxa were investigated by SDS-PAGE and 39 different bands were scored. The similarity analysis based on the SDS-PAGE profile and seed morphology was found to be a useful characteristic for the discrimination of Vicia species both on the subgeneric and the sectional levels. The present study did not acknowledge V. tetrasperma and V. hirsuta as subgenus Ervum. As a result, division of Vicia...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Taxonomy Taxonomy; Vicia; Seed proteins; Seed morphology; Sections taxonomy  Vicia.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/19345

Hydrotime model can describe the response of common bean (Phaseolus vulgaris L.) seeds to temperature and reduced water potential - doi: 10.4025/actascibiolsci.v35i2.15393
Provedor de dados: 3
Autores: Cardoso, Victor José Mendes; Universidade Estadual Paulista; Bianconi, André; Universidade Estadual Paulista.
Germination parameters of the response to temperature and water potential from four common bean (Phaseolus vulgaris) lines based on thermal-time and hydrotime concepts were estimated to verify to what extent they can predict germination under different thermal and water conditions. The cultivars IPR Uirapuru and IAPAR 81 (drought-tolerant), and Grauna and Carioca (not tolerant) were used. The isothermal assays were performed in a temperature gradient block, and the assays with different osmotic potentials (PEG 6000) were performed in germination chambers. Seeds from drought-tolerant cultivars spent less time to germinate at supra-optimum temperatures than non-tolerant ones, and the cultivar Uirapuru (drought-tolerant) germinated faster in response to...
Palavras-chave: Carioca; Grauna; IAPAR 81; Uirapuru; Germination; Model.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/15393

Changes in the blood parameters of the Amazonian manatee (Trichechus inunguis) after long-distance transportation - doi: 10.4025/actascibiolsci.v35i4.20081
Provedor de dados: 3
Autores: Carmo, Talita Laurie Lustosa do; Instituto Nacional de Pesquisas da Amazônia; Amaral, Rodrigo de Souza; Universidade de Brasília; Rosas, Fernando Cesar Weber; Instituto Nacional de Pesquisas da Amazônia; d'Affonsêca Neto, José Anselmo; Instituto Nacional de Pesquisas da Amazônia; Reisfeld, Laura; Aquário de São Paulo; Silva, Vera Maria Ferreira da; Instituto Nacional de Pesquisas da Amazônia.
In this study we report the hematological, biochemical and hormonal parameters in a juvenile male Amazonian manatee measured before transport, immediately after transport, and during adaptation to a new facility. The animal was transported from Manaus, Amazonas, Brazil, to São Paulo, São Paulo, Brazil, (2,733 km) within 6 hours. Among all blood parameters analyzed, we observed obvious neutrophilia, lymphopenia, and increases in the neutrophil/lymphocyte ratio and serum glucose and aspartate aminotransferase (AST) levels, but these parameters subsequently returned to normal. These results suggest that transport and changes in the environment are temporary stressful events for Amazonian manatees. We, therefore, recommend monitoring the hematological and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.07.01.00-4 sirenian; Hematology; Blood chemistry; Cortisol; Stress Fisiologia geral.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/20081

Seedling structure of Euphorbia L. and Chamaesyce Gray species  - doi: 10.4025/actascibiolsci.v36i1.18601
Provedor de dados: 3
Autores: Souza, Luiz Antonio de; Universidade Estadual de Maringá; Dariva, Higor Simionato; Universidade Estadual de Maringá; Santos, Luciane da Silva; Universidade Estadual de Maringá; Capparros, Eloiza Muniz; Universidade Estadual de Maringá.
Chamaesyce prostrata (Aiton) Small, Euphorbia heterophylla L. and Euphorbia graminea Jacq. are weedy species that occur with relative frequency in the region of Maringá, Paraná State, Brazil. Data about the morphology and anatomy of seedlings of these species were obtained, with emphasis on significant structural differences of seedlings between species of Euphorbia and Chamaesyce. Seedlings are phanerocotylar and epigeal. Root is axial and triarch. Cotyledons are leaf-like and dorsiventral. Eophylls and prophylls are simple and dorsiventral. Morphological variations occur in the cotyledon shape of Euphorbia seedlings. It is remarkable the Kranz structure of leaves that occurs only in Chamaesyce.   
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.03.02.03-7 weeds; Root; Hypocotyl; Cotyledons; Epicotyl; Eophylls Anatomia Vegetal.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/18601

Influence of cage farming on feeding and reproductive aspects of Pimelodus maculatus Lacépède, 1803 (Siluriformes: Pimelodidae) in the Chavantes reservoir, Brazil  - doi: 10.4025/actascibiolsci.v36i1.
Provedor de dados: 3
Autores: Brandão, Heleno; Universidade Estadual Paulista “Júlio de Mesquista Filho”; Santana, Julio Cesar de Oliveira; Universidade Estadual de Campinas; Ramos, Igor Paiva; Universidade Estadual Paulista “Júlio de Mesquista Filho”; Carvalho, Edmir Daniel; Universidade Estadual Paulista “Júlio de Mesquista Filho”.
This study evaluated the diet and reproductive aspects of the population of Pimelodus maculatus around net cage fish farming in order to assess the possible impacts of this activity. Monthly collections were performed from March 2008 to February 2009 on two populations: one close to the net cages (NC) and one from an area not influenced by these cages denominated the “reference site” (RS). Results of the Alimentary Index (AI), Gonadosomatic Index (GSI), reproductive potential and histological analysis were obtained for both NC and RS populations. The population from NC used leftover food (ration) that escapes from net cages as the main food item (99.3%). For the RS population, the detritus item was the more important food source (51.7%). The Detrended...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.05.02.00-1 fish; Biology; Neotropical reservoir; Paranapanema river Ecologia.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/21039

Evaluation of the semen characteistics after induced spermiation in the bullfrog Lithobates catesbeianus - doi: 10.4025/actascibiolsci.v35i3.14780
Provedor de dados: 3
Autores: Pereira, Marcelo Maia; Universidade Federal de Viçosa; Ribeiro Filho, Oswaldo Pinto; Universidade Federal de Viçosa.; Zanuncio, Jose Cola; Universidade Federal de Viçosa; Navarro, Rodrigo Diana; Universidade de Brasília; Seixas Filho, Jose Teixeira; Fundação Instituto de Pesca do Rio de Janeiro; Ribeiro, Christiano Demétrio  de Lima; Universidade Federal de Viçosa.
Evaluation of semen characteristics after hormonal induction of the bullfrog could provide valuable information on the gametes of this species, which may be useful for projects related to artificial fertilization, animal improvement, and cryopreservation. Bullfrog males were induced to spermiate with buserelin acetate (GnRHa), and their semen was subsequently analyzed. GnRHa (0.4 μg) was administered to the bullfrog males with secondary sexual characteristics such as weight &amp;gt; 200 g, yellow chin, nuptial callus, and amplexus reflex, being the semen collected after 60 min. The semen volume was 5.76 mL, light-colored. The other characteristics of the semen were: vigor of 4.80, motility of 93%, concentration of 14.24 × 106 mL-1, and content of normal...
Tipo: Reprodução
Palavras-chave: 5.06.03.00-0; 5.05.04.00-2; 2.04.06.00-2 reproduction; Semen; Spermatozoid; Sperm motility Aquicultura.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/14780

Influence of environmental quality on the diet of Astyanax in a microbasin of central western Brazil - doi: 10.4025/actascibiolsci.v35i2.15570
Provedor de dados: 3
Autores: Souza, Rosangela Guarisso de; Universidade Estadual de Mato Grosso do Sul; Lima-Junior, Sidnei Eduardo; Universidade Estadual de Mato Grosso do Sul.
This study analyzed physicochemical characteristics of the water, degradation of the surroundings and the influence of these factors on the diet of two fish species of Astyanax in Tarumã stream microbasin, central western Brazil. Fish were collected in eight sites between 2007 and 2010, using gillnets and sieves. Environmental variables were evaluated by a principal component analysis and the diet based on Spearman’s correlation. The variables width, type of riparian vegetation, pH, conductivity, total dissolved solids, temperature, oxidation and reduction potential, presence of waste, and altitude have separated the sampling sites into two groups: ‘less impacted’ and ‘more impacted’. The two characid species presented omnivorous habit, typical of...
Tipo: Dieta de peixes
Palavras-chave: Ciências Biológicas / Ecologia environmental degradation; Streams; Ichthyofauna; Food Influência da qualidade ambiental na dieta de peixes.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/15570

Genetic variability in Oligosarcus paranensis (Teleostei: Characiformes) from the São Francisco river, Ivaí river basin – Paraná State, Brazil - doi: 10.4025/actascibiolsci.v35i3.14179
Provedor de dados: 3
Autores: Santos, Michele Rocha dos; Universidade Estadual de Maringá; Renesto, Erasmo; Universidade Estadual de Maringá.
The genetic variability of Oligosarcus paranensis was estimated from a population collected in São Francisco river, Prudentópolis county in Paraná State (Brazil) using the electrophoresis in starch gel technique. Eleven enzymatic systems were analyzed: Aspartate aminotransaminase (AAT; E. C. 2.6.1), Alcohol dehydrogenase (ADH; E. C. 1.1.1.1), Esterase (EST; E. C. 3.1.1.1), Glucose-6-phosphate isomerase (GPI; E. C. 5.3.1.9), Glycerol-3-Phosphate dehydrogenase (G3PDH; E. C. 1.1.1), Isocitrate dehydrogenase (IDH; E. C. 1.1.1.42), L-lactate dehydrogenase (LDH; E. C. 1.1.1.27), Malate dehydrogenase (MDH; E. C. 1.1.1.37 ), Malate dehydrogenase NADP (ME; E. C. 1.1.1.40), Phosphoglucomutase (PGM; E. C. 5.4.2.2) and Sorbitol dehydrogenase (SORB; E.C. 1.1.1.14)....
Palavras-chave: Allozyme; Genetic diversity; Heterozygosity; Polymorphism; Pisces.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/14179

Influence of environmental integrity on the feeding biology of Astyanax altiparanae (Garutti &amp; Britski, 2000) in the Ivinhema river basin - doi: 10.4025/actascibiolsci.v35i4.19497
Provedor de dados: 3
Autores: Viana, Lucilene Finoto; Suarez, Yzel Rondon; Lima-Junior, Sidnei Eduardo.
This study aimed at analyzing the influence of different levels of environmental integrity of streams of the Ivinhema river basin (Mato Grosso do Sul State, Brazil) on the diet of A. altiparanae. Samplings were performed from July 2001 to November 2011 at 101 sites, using sieves, seining and gill nets, and electrofishing. Streams were classified into three levels of environmental integrity. We analyzed 664 stomachs with the methods of frequency of occurrence and volumetric analysis index, combined in the Importance Index (AI). The species was omnivorous, with predominance of allochthonous resources. At the least impacted sites, the most representative resource was allochthonous plant material; and in the altered sites in the rainy period the most consumed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.05.03.00-8 Ecologia Aplicada stream; Fish; Gut content; Food habits.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/19497

Morphological and anatomical characterization of the digestive tract of Centropomus parallelus and Centropomus undecimalis - doi: 10.4025/actascibiolsci.v35i4.14352
Provedor de dados: 3
Autores: Machado, Márcia Regina Fragoso; Universidade Nilton Lins; Souza, Helena de Oliveira; Universidade Federal do Rio de Janeiro; Souza, Valderes Lemos de; Fundação Oswaldo Cruz; Azevedo, Alexandre de; Universidade Federal do Rio de Janeiro; Goitein, Roberto; Instituto de Biociências da Univesidade Estadual Paulista (Unesp), Rio Claro – São Paulo; Nobre, André Dias; Universidade Nilton Lins.
Centropomus parallelus and Centropomus undecimalis are the most common species of Centropomidae in Brazil. Some authors attribute their failure to grow under in artificial conditions due to limited knowledge on the morphological and functional development of their digestive system and on nutrition requirements of both species. Current research characterizes histologically and histochemically the digestive tract of Centropomus parallelus and Centropomus undecimalis to provide a histophysiological assessment for studies related to their nutritional needs. In the esophagus, the mucous cells in the epithelium stained positively for PAS and AB. In the stomach, positive reactions to PAS and negative to AB respectively occurred on surface and mucous cells in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Digestive tract; Feeding habits; Histology; Centropomus.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/14352

Temporal distribution of ichthyoplankton in the Forquilha river, upper Uruguay river – Brazil: Relationship with environmental factors  - doi: 10.4025/actascibiolsci.v36i1.17993
Provedor de dados: 3
Autores: Lopes, Carolina Antonieta; Universidade Federal de Santa Catarina; Garcia, Valquíria; Universidade Federal de Santa Catarina; Reynalte-Tataje, David Augusto; Universidade Federal de Santa Catarina; Zaniboni-Filho, Evoy; Universidade Federal de Santa Catarina; Nuñer, Alex Pires de Oliveira; Universidade Federal de Santa Catarina.
  This study aimed to evaluate the temporal distribution of fish eggs and larvae in the Forquilha river (upper Uruguay river/Brazil) and its relationship with environmental variables. Ichthyoplankton and abiotic factors were sampled from September 2006 to August 2007. At the laboratory, samples were sorted and larvae were identified to the lowest possible taxonomic level. For data analysis we applied One-way Anova, Tukey’s test, Pearson correlation and PCA. In this study 200 eggs and 308 larvae were collected, showing differences in the temporal distribution and influence of abiotic factors. Larvae were identified in all stages of development, being distributed in three order and eight families. These results point that the lower portion of the Forquilha...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eggs and larvae; Fish; Reproduction; Abiotic variables.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/17993

Assessing nitrogen flow in production and utilization cycle of wheat and maize as a tool to monitor N loss in Iran - doi: 10.4025/actascibiolsci.v35i3.16039
Provedor de dados: 3
Autores: Koocheki, Alireza; Ferdowsi University of Mashhad; Nassiri Mahallati, Mehdi; Ferdowsi University of Mashhad; Mansoori, Hamed; Ferdowsi University of Mashhad; Moradi, Rooholla; Ferdowsi University of Mashhad.
Increasing resource use efficiency is crucial for enhancement of agricultural productions and reducing environmental hazards. For this purpose, improvement of Nitrogen use efficiency is an effective approach. Not only N loss occurs in field but also in processing course of food utilization. The objective of this study was to evaluate N loss and efficiency from production to consumption for wheat and maize. For this purpose, data for the amount of applied nitrogen, acreage, yields, amount of returned residue were collected and a proportion of N allocated to different source of food or feed was also traced. Results showed that total N harvested by wheat and maize were 387 and 81.7 kt and N use efficiency for the same crops were 25 and 60%, respectively....
Palavras-chave: N use efficiency; N loss; Nutrient management; Fertilizer Environment.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/16039

Richness and composition of macrophyte assemblages in four Amazonian lakes - doi: 10.4025/actascibiolsci.v35i3.11602
Provedor de dados: 3
Autores: Mormul, Roger Paulo; Universidade Estadual de Maringá; Thomaz, Sidinei Magela; Universidade Estadual de Maringá; Vieira, Lisandro Juno Soares; Universidade Federal do Acre.
Aquatic macrophytes are an important component in the structure of lakes in Neotropical floodplains, for example, because they support a high diversity of invertebrates and vertebrates. In this paper, we tested whether or not the variability of macrophyte assemblages is lower in spatially close quadrats than among quadrats of different lakes. The study was carried in four lakes in a large Amazonian floodplain (Purus river), where floating meadows were investigated. A total of 49 taxa of macrophytes were found. Five species dominated and three species were rare. Taxa richness, composition and beta diversity differed more between than within lakes. Because high beta diversity was found among the lakes, they should be considered individually important for...
Palavras-chave: 2.05.00.00-9 Purus river; Oxbow lake; Dry season; Amazon; Floating meadows; Diversity Ecologia.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/11602

Flagellate protist abundance in phytotelmata of Aechmea distichantha Lem. (Bromeliaceae) in the upper Paraná river basin - doi: 10.4025/actascibiolsci.v35i4.17134
Provedor de dados: 3
Autores: Duarte, Gisele Silva Costa; Alves, Geziele Mucio; Lansac-Tôha, Fernando Miranda; Velho, Luiz Felipe Machado; Lansac-Tôha, Fábio Amodêo.
In some Bromeliaceae species the leaf sheaths form a tank or phytotelma, accumulating water and organic detritus, conditions that allow the establishment of different communities. Thus, this study evaluated the relationship between diameter and volume of water in the tank of the bromeliad Aechmea distichantha Lem. and density of flagellates found in the phytotelmata, as well as the influence of the hydrological periods and proximity of sampled strata on the phytotelma patterns of abundance distribution. Samplings were conducted in two hydrological periods in 2010. In each sampling, four plants were collected from three different strata, classified according to the distance from the river level. A one-way ANOVA identified significant differences in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ecologia/Ecologia de Ecossistemas Phytotelma; Protozoa; Bromeliad; Rocky walls Ecologia de Protoplâncton.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/17134

Reproductive strategies of fish populations from three Neotropical streams - doi: 10.4025/actascibiolsci.v35i2.10932
Provedor de dados: 3
Autores: Zanatta, Naiara; Universidade Estadual de Maringá; Cionek, Vivian de Mello; Universidade Estadual de Maringá; Benedito, Evanilde; Universidade Estadual de Maringá.
This study aimed to characterize the reproductive strategies of fish from first order streams. Samplings were performed every three months from June 2008 to March 2009, using electric fishing at three streams: Conceição, Scherer and Jurema, located in the municipalities of Diamante do Norte and Amaporã, Paraná State, Brazil. We obtained the total weight (g), standard or total length (cm), sex and maturation stage for each specimen. Limnological data were obtained with portable equipments. The minimum length at first maturation was established for each population, and reproduction period was determined by analyzing the distribution of maturation stages. The sex ratio was obtained and tested (X2) for significant differences. Eight species were analyzed and...
Tipo: Reprodução
Palavras-chave: 2.00.00.00-6 upper Paraná river basin; Sex ratio; Conservation unit; Reproductive stages 2.05.02.00-1.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/10932

Effects of intensive fish-farming and domestic wastewater on the periphytic algal community in a tropical coastal lagoon (Juara, Brazil) - doi: 10.4025/actascibiolsci.v35i3.17094
Provedor de dados: 3
Autores: Almeida, Stéfano Zorzal de; Instituto de Botânica; Fernandes, Valéria de Oliveira; Universidade Federal do Espírito Santo.
This study aimed at evaluating the effects of the intensive fish-farming and the domestic wastewater on the structure of the phycoperiphyton community. Three experimental supports containing artificial substrate were assembled in two sampling sites: IF – region with intensive fish-farming and DW – near the domestic wastewater discharge. Samplings were carried out after the 21st, 26th and 31st day of colonization. The abiotic variables evaluated were: transparency, electrical conductivity, pH, turbidity, total suspended solids, alkalinity, dissolved oxygen, water temperature and nutrients. Phycoperiphyton was examined with regard to density, richness, abundance, dominance, diversity and eveness. Nutrients (total nitrogen, nitrate, ammonia nitrogen,...
Tipo: Estudos exploratórios
Palavras-chave: 2.05.00.00-9; Bacillariophyceae; Late successional stage; Nutrients; Phycoperiphyton; Artificial substrate 2.05.00.00-9.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/17094

Histological and immunohistochemical study of the thyroid gland of the broad-snouted caiman (Caiman latirostris) - doi: 10.4025/actascibiolsci.v35i4.18444
Provedor de dados: 3
Autores: Machado-Santos, Clarice; Universidade Federal da Bahia.; Teixeira, Monalisa Jales; Médica Veterinária Autônoma; Sales, Armando; Universidade Federal Rural do Rio de Janeiro; Abidu-Figueiredo, Marcelo; Universidade Federal Rural do Rio de Janeiro.
The broad-snouted caiman, Caiman latirostris, is widely distributed in countries of South America. In Brazil it is considered an endangered species because of natural habitat destruction and illegal hunting.  In reptiles, the thyroid gland plays an integral part in ecdysis, reproduction, tail regeneration, growth, endocrine function and metabolism rate. The aim of the present study was to characterize the thyroid gland morphology of C. latirostris, based on histochemical and immunohistochemical techniques. The thyroid glands were fixed in Bouin's fluid and serial cross sections were stained with hematoxylin-eosin, Mallory’s trichrome, periodic acid-Schiff (PAS) and Alcian blue (AB pH 1.5 and 2.5). The immunohistochemical technique for 5-HT-IR cells was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ciências biológicas Thyroid; Histology; Reptiles; 5-HT Histologia.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/18444

Detection of genes providing salinity-tolerance in rice - doi: 10.4025/actascibiolsci.v36i1.15437
Provedor de dados: 3
Autores: Lima, Maria da Graça de Souza; Universidade Federal de Pelotas; Lopes, Nei Fernandes; Universidade Federal de Pelotas; Zimmer, Paulo Dejalma; Universidade Federal de Pelotas; Meneghello, Geri Eduardo; Universidade Federal de Pelotas; Ferrari, Cibele; Universidade Federal de Pelotas; Mendes, Cristina Rodrigues; Universidade Federal de Pelotas.
  The present study aimed to identify salinity-tolerant genes in three cultivars (BRS-7 Taim, BRS Querência and BRS Atalanta) of Oryza sativa L. ssp. indica S. Kato and in three cultivars (BRS Bojurú, IAS 12-9 Formosa and Goyakuman) of Oryza sativa L. ssp. japonica S. Kato. Ten days after emergence seedlings were transferred to a greenhouse and placed in a 15L vessel with half strength Hoagland nutrient solution, which was changed every four days, under controlled temperature and humidity. Plants were harvested 56 days after transfer. DNA extraction was carried out by CTAB method and salinity-tolerant genes SOS and CK1 were identified by in silico research. Amplification of gene sequence was performed with in silico primers. Bands were detected by agar gel...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.03.03.00-9 Oryza sativa L.; Cultivars; Salinity-tolerance; Genes; In silico Biologia Molecular.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/15437

Dynamics of the production and decomposition of litterfall in a brazilian northeastern tropical forest (Serra de Itabaiana National Park, Sergipe State) - doi: 10.4025/actascibiolsci.v35i2.11920
Provedor de dados: 3
Autores: White, Benjamin Leonardo Alves; Universidade Federal de Sergipe; Nascimento, Daniela Lima do; Universidade Federal de Sergipe; Dantas, Túlio Vinicius Paes; Universidade Federal de Sergipe; Ribeiro, Adauto de Souza; Universidade Federal de Sergipe.
This study was carried out in the Serra de Itabaiana National Park from October, 2006, to October, 2007. The main objective was to quantify litterfall production and analyze decomposition rates in a tropical seasonal semideciduous forest. Forty 0.25 m² collectors were used to quantify the litterfall and 36 litterbags to record the rate of decomposition of the foliar biomass. The total litterfall production was 8.6 ton ha-1 in 11 months, of which 54.6% of leaves. The constant of leaf decomposition (K) was 0.52, and the half-life of the leaf biomass was estimated to be 495 days. A significant correlation was observed between leaf fall and monthly precipitation, but no relationship was found between decomposition rates and rainfall.
Palavras-chave: Ecologia nutrient cycling; Preciptation; Litter Ecologia de Ecossistemas.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/11920

Structure of planktonic ciliates community (Protist, Ciliophora) from an urban lake of southern Brazil - doi: 10.4025/actascibiolsci.v35i4.18579
Provedor de dados: 3
Autores: Velho, Luiz Felipe Machado; Brão, Arianne Francielle Silva; Lansac-Tôha, Fernando Miranda; Buosi, Paulo Roberto Bressan; Meira, Bianca Ramos de; Cabral, Adalgisa Fernanda; Lansac-Tôha, Fábio Amodêo.
This study examined temporal and spatial (vertical) variations of composition, richness and abundance of the planktonic ciliates community in an urban and eutrophic lake, as well as identified the limnological factors involved in determining the patterns observed. To this end, samples of ciliates and measures of limnological variables were taken at different depths and hydrological periods. 35 ciliate species were identified, among which 14 species occurred in all periods and strata, being Prostomatida the most specious, followed by Gymnostomatida, Oligotrichida, Peritrichida, and Scuticociliatida. The patterns found for composition, abundance and species richness evidenced a vertical and temporal variation of these attributes. However, in general the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ecologia - Limnologia / Ecologia de comunidades Protist; Density; Species compositio; Richness; Plankton Ecologia de Protoplâncton.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/18579

Uso e Conservação de florestas de galeria do bioma Pampa Brasileiro
Provedor de dados: 3
Autores: Costella, Eduardo; Universidade Federal do Pampa; Garcia, Bruno Alves; Universidade Federal do Pampa; Costa, Leonardo Severo da; Universidade Federal do Pampa; Corneleo, Nathana da Silva; Universidade Federal do Pampa; Schünemann, Adriano Luis; Universidade Federal do Pampa; Stefenon, Valdir Marcos; Universidade Federal do Pampa.
Como efeito do crescimentop demográfico, muitas cidades no Sul do Brasil experimentaram, na última década, um processo de degradação de áreas de preservação ambiental. O planejamento de programas de recuperação de florestas depende de conhecimento estruturado sobre a utilização de espécies vegetais pelas comunidades locais. Entrevistas semi-estruturadas e inventários fitossociológicos foram empregados para acessar o efeito do uso antropogênico de espécies arbóreas de matas de galeria em áreas do Pampa brasileiro. Oitenta e quatro informantes foram entrevistados e listaram um total de 43 espécies, pertencentes a 23 famílias botânicas. Quatro categorias de uso foram identificadas para as espécies citadas: lenha, medicamento, alimento e madeira. As três...
Tipo: Entrevista semi-estruturada; inventário florestal
Palavras-chave: Ethnobotany; Forest conservation; Traditional knowledge Botany Biologia ethnobotany; Sustainability; Traditional knowledge Botânica.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/13458

Structure of the periphytic algae associated with a floating macrophyte in an open lake on the upper Paraná river floodplain, Brazil - doi: 10.4025/actascibiolsci.v35i4.18663
Provedor de dados: 3
Autores: Biolo, Stefania; Universidade Estadual Paulista "Júlio de Mesquita Filho" (UNESP); Rodrigues, Liliana; Universidade Estadual de Maringá.
We aimed to access the knowledge of the structure of the periphytic algae community on a floating substrate, the macrophyte Ricciocarpus natans (L.) Corda, during two hydrological periods in a connected environment at the Paraná river floodplain. Attached algal was removed from the substrate with the aid of a soft-bristled brush and distilled water jets and was fixed immediately for qualitative and quantitative analysis. The total richness of the periphytic algae was 188 taxa. February showed the highest species richness (154 taxa), while total species density exhibited an inverse pattern, with the highest values occurring in June (273.4 103ind. cm-2). Bacillariophyceae comprised the largest fraction of density, which was reflected by the abundance of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.00.00.00-6 periphyton; Community structure; Natural substrate; Ricciocarpus natans 2.05.00.00-9.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/18663

Population and reproductive features of the freshwater shrimp Macrobrachium jelskii (Miers, 1877) from São Paulo State, Brazilb - doi: 10.4025/actascibiolsci.v35i3.15815
Provedor de dados: 3
Autores: Mossolin, Emerson Contreira; Universidade Federal de Goiás / Universidade de São Paulo; Peirò, Douglas Fernando; Universidade de São Paulo / Centro Universitário de Araraquara; Rossingnoli, Mariana Oliveira; Centro Universitário de Araraquara; Rajab, Livia Pinto; Centro Universitário de Araraquara; Mantelatto, Fernando Luis Medina; Universidade de São Paulo.
The aim of this study was to describe the population structure and reproduction of Macrobrachium jelskii from a stream in the central region of São Paulo State. A total of 1,215 specimens was collected monthly during one year (February 2008 to January 2009), being 535 males, 578 females and 102 juveniles. The overall sex-ratio was not significantly different from the expected 1:1, but has significantly differed in some months. A total of 136 ovigerous females were collected and the reproductive period was continuous with peak of occurrence on the hottest months. An increase in juveniles following the highest frequency of ovigerous females was observed and characterized the recruitment period. The fecundity was low and varied from 1 to 56 eggs per female....
Tipo: Biologia populacional; Biologia reprodutiva
Palavras-chave: 2.04.00.00-4 Crustacea; Decapoda; Fecundity; Palaemonidae; Reproduction Zoologia - Morfologia dos Grupos Recentes.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/15815

Molecular variants in populations of Bryconamericus aff. iheringii (Characiformes, Characidae) in the upper Paraná river basin - doi: 10.4025/actascibiolsci.v35i2.11451
Provedor de dados: 3
Autores: Mazeti, Camila Montoro; Universidade Estadual de Maringá; Maniglia, Thiago Cintra; Universidade Estadual de Maringá; Prioli, Sônia Maria Alves Pinto; Universidade Estadual de Maringá; Prioli, Alberto José; Universidade Estadual de Maringá.
There are evidences that Bryconamericus aff. iheringii represents a species complex. DNA molecular markers have been effective in studies on phylogeny, taxonomy, and identification of cryptic species. In this study, partial sequences of genes of ATPase 6 and 8 were used to assess genetic diversity within and among populations of B. aff. iheringii of sub-basins of Tibagi, Pirapó and Ivaí rivers, belonging to the Upper Paraná river basin. The analysis of the sequences of genes pointed out high genetic diversity in B. aff. iheringii from the sub-basins studied with genetic distance values comparable to those found among different species. There was a division of the individuals into five groups. The comparison with other species of Bryconamericus that have...
Palavras-chave: Characiformes; Bryconamericus; MtDNA; Genes of ATPase 6 and 8 Biologia Molecular Characiformes; Bryconamericus; MtDNA; ATPase 8 e 6 Biologia Molecular.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/11451

Identificação molecular de Cichla (Perciformes: Cichlidae) introduzidas nos reservatórios do Sul do Brasil. Molecular identification of Cichla (Perciformes: Cichlidae) introduced in the reservoirs of the South Region in Brazil
Provedor de dados: 3
Autores: Briñez, Boris; Universidade Estadual de Maringá; Júlio Júnior, Horacio Ferreira; Universidade Estadual de Maringá; Prioli, Sonia Maria Alves Pinto; Universidade Estadual de Maringá; Maniglia, Thiago Cintra; Núcleo de Pesquisas em Limnologia, Ictiologia e Aqüicultura (Nupelia), Universidade Estadual de Maringá; Prioli, Alberto José; Universidade Estadual de Maringá.
Espécies de tucunaré foramn introduzidas em inúmeras bacias hidrográficas da América do Sul e em outras regiões do planeta, principalmente devido as suas características esportivas, de peixe lutador. Revisão recente das espécies do gênero Cichla mostraram que as espécies que foram introduzidas nos reservatórios das regiões Sul, Sudeste e Nordeste, são duas espécies novas, descritas como Cichla kelberi (tucunaré amarelo) e Cichla piquiti (tucunaré azul) identificadas erroneamente como C. monoculus e C. ocellaris. Com o objetivo de identificar as populações de Cichla presentes no Rio Paranapanema e Paraná, foram sequenciadas um total de 323 pares de bases (pb) da região controle (MtDNA) obtidas de oitenta e quatro indivíduos de Cichla em cinco localidades...
Palavras-chave: 2.02.02.00-8 species introduction; C. monoculus; Mitochondrial DNA; Peacock bass; Paraná river Genética Species introduction  C.monoculus  MtDNA control region  Peacock bass  Upper Paraná River  Tucunaré. Introdução de espécies  C.monoculus  região controle (MtDNA)  Tucunaré Genética.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/10684

Physiological characteristics of the Atlantic Forest native bromeliads: Nidularium campo-alegrense Leme and Aechmea ornata Baker  - doi: 10.4025/actascibiolsci.v36i1.20215
Provedor de dados: 3
Autores: Corredor Prado, Jenny Paola; Universidade Federal de Santa Catarina; Morales Londonõ, Diana Marcela; Universidade Federal de Santa Catarina; Almeida, Vivian; Universidade Federal de Santa Catarina; Brunetto, Gustavo; Universidade Federal de Santa Catarina; Pescador, Rosete; Universidade Federal de Santa Catarina.
Despite the ecological importance of bromeliads, the basic knowledge about the physiological aspects in some species is poorly understood. The aim of this study was to physiologically characterize the species Nidularium campo-alegrense Leme and Aechmea ornata Baker to contribute to a better understanding of their metabolic processes. From mature leaves of bromeliads N. campo-alegrense and A. ornata held at the Agricultural Sciences Center of the Federal University of Santa Catarina, it was quantified photosynthetic pigments, carbohydrates and starch, and determined stomata and trichome density. The chlorophyll and carotenoids content did not differ significantly between species. However, the total carbohydrates content of A. ornata (3.2 mg g-1 FM) was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2.03.03.00-9 Bromeliaceae; Carbohydrates; Carotenoids; Chlorophyll Fisiologia vegetal.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/20215

Determinación de la frecuencia de micronúcleos en eritrocitos de Bufo arenarum que habitan ambientes urbanizados
Provedor de dados: 40
Autores: Caraffa,Evangelina; Bionda,Clarisa del L; Pollo,Favio E; Salas,Nancy E; Martino,Adolfo L.
Los anfibios son constituyentes integrales de ecosistemas naturales y agrícolas, y debido a su sensibilidad pueden ser utilizados como bioindicadores. La frecuencia de micronúcleos se emplea como un biomarcador que evalúa la respuesta a agentes genotóxicos. El objetivo del trabajo fue determinar y comparar la frecuencia de micronúcleos en eritrocitos de Bufo arenarum que habitan ambientes antrópicos de la ciudad de Río Cuarto. Se escogieron tres sitios modificados: un lago urbano Lago Villa Dálcar (33º06´S-64º22´W) y dos sitios de cultivo denominados Cultivo1 (33º05'S-64º26'W) y Cultivo 2 (33º05'S-64º25'W). Como control se escogió un área ubicada en las sierras de Comechingones, en el Campo Experimental Las Guindas (32º35'S- 64º42'W), pertenecientes a la...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Micronúcleos; Anfibios; Bufo arenarum; Agroecosistemas.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-37432013000200002

Biodisponibilidad y toxicidad de metales pesados en aguas naturales con características físico-químicas extremas: Bases para su monitoreo y remediación
Provedor de dados: 40
Autores: Casares,María V.
Tipo: Info:eu-repo/semantics/article
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-37432013000100006

Acute silver toxicity to Cnesterodon decemmaculatus (Pisces: Poeciliidae) in a river with extreme water-quality characteristics
Provedor de dados: 40
Autores: Casares,María Victoria; de Cabo,Laura I; Seoane,Rafael; Natale,Oscar.
Abstract. A 96 h acute silver toxicity test was performed in order to determine silver toxicity (LC50) to a local fish species (Cnesterodon decemmaculatus) in a river with extreme water-quality characteristics (Pilcomayo River, South America) and evaluate a cross-fish-species extrapolation of the Biotic Ligand Model. The dissolved silver concentrations tested were 0.095, 0.148, 0.175 and 0.285 mg Ag L&amp;#8722;1. The 96 h Ag LC50 calculated for C. decemmaculatus was 0.14 mg L&amp;#8722;1 (0.18 - 0.10) and the value predicted by BLM for Pimephales promelas was 0.051 mg Ag L&amp;#8722;1. Test water elevated hardness may have exerted some protective effect. High mean water pH may have exerted a major protective effect by reducing silver free ion form and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Silver; Cnesterodon decemmaculatus; Biotic Ligand Model; Extrapolation.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-37432013000200004

Equivalentes tóxicos de hidrocarburos aromáticos políciclicos en particulado atmosférico en Valencia, Venezuela
Provedor de dados: 40
Autores: Vargas,Maritza; Romero,Gabriela; Palencia,Aura; Rivero,Exila; Piñero,Sofía.
El particulado atmosférico de las áreas urbanas contiene mezclas de compuestos contaminantes con diferentes grados de toxicidad como los Hidrocarburos Aromáticos Policíclicos (HAPs), provenientes de las emisiones de combustión incompleta de diversas fuentes no naturales. Los HAPs pueden provocar cáncer, malformaciones congénitas, trastornos del sistema nervioso, entre otros, al ser absorbidos, ya sea por inhalación o ingesta. El factor de equivalencia de toxicidad (FET), es un parámetro estimativo que relaciona la toxicidad de un compuesto con un componente de referencia, cuyo objetivo es evaluar la toxicidad y el riesgo de diversas sustancias y, en el caso de HAPs, el benzo(a)pireno (BaP) es el compuesto de referencia. El objetivo de este trabajo fue...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: HAPs; Factor equivalente de toxicidad; Riesgo de cáncer; Particulado atmosférico.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-37432013000200001

Cadmio: efectos sobre la salud. Respuesta celular y molecular
Provedor de dados: 40
Autores: Martínez Flores,Karina; Souza Arroyo,Verónica; Bucio Ortiz,Leticia; Gómez Quiroz,Luis Enrique; Gutiérrez Ruiz,María Concepción.
El cadmio (Cd) es un metal que se encuentra principalmente en la corteza terrestre y siempre se presenta en combinación con el zinc. Es ampliamente utilizado en la industria. Se considera un contaminante y es liberado al ambiente como subproducto de la extracción de cobre, hierro y zinc. La exposición al Cd puede producir una variedad de efectos adversos tanto en el humano como en los animales. Una vez absorbido se acumula en el organismo por tiempos largos. Dependiendo de la dosis, fuente y tipo de exposición puede dañar varios órganos como el hígado, riñón, pulmón, hueso, testículos y placenta. Los seres humanos están expuestos al Cd principalmente a través de la ingesta de alimentos, del humo del cigarro, así como del agua y aire contaminados con el...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cadmio; Metalotioneína; Especies reactivas de oxígeno; Cascadas de señalización.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-37432013000100004

Prevalencia de tabaquismo en el personal del Hospital Santojanni
Provedor de dados: 40
Autores: Álvarez Bernárdez,Alejandra Marta; Delgado,Ana Laura; Ripoli,Mario; Nápoli,Mónica.
El tabaquismo es la principal causa de morbi-mortalidad prevenible en países en vías de desarrollo, de manera que se lo considera un grave problema en Salud Pública. El objetivo de este trabajo fue estimar la prevalencia de tabaquismo en el personal del Hospital Santojanni y compararla con la población general de la Ciudad Autónoma de Buenos Aires. Se realizaron encuestas anónimas y voluntarias, entre junio y noviembre del 2011. El diseño del estudio es observacional, descriptivo y analítico de corte transversal. Los resultados arrojaron que la prevalencia de tabaquismo en el personal del Hospital Santojanni es del 28,86% sin diferencias significativas con respecto a la población general de la Ciudad Autónoma de Buenos Aires (31,9%) (p= 0,0966). En cambio,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tabaquismo; Prevalencia; Personal Hospital Santojanni; Humo del tabaco.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-37432013000200003

Citotocixidade e atividade antiparasitária de Lygodium venustum SW
Provedor de dados: 40
Autores: Morais-Braga,Maria Flaviana B; Souza,Teógenes .M; Santos,Karla K.A; Andrade,Jacqueline C; Guedes,Gláucia M.M; Tintino,Saulo R; Souza,Celestina E.S; Costa,José G.M; Saraiva,Antônio A.F; Coutinho,Henrique.D.M.
. Doenças parasitárias infecciosas como leishmaniose e doença de Chagas tem se difundido nas últimas décadas a locais onde antes não se observava sua ocorrência. São consideradas negligenciadas por assolarem países pobres e serem marginalizadas farmacologicamente. O tratamento não apresenta muitas opções de fármacos e estes demonstram relevante toxicidade contribuindo para o aparecimento de diversos efeitos colaterais. A pesquisa com produtos naturais tem se mostrado uma interessante alternativa para a procura por novos fármacos. Lygodium venustum é uma samambaia cosmopolita de hábito lianescente encontrada na encosta na Chapada do Araripe, considerada por algumas populações americanas como planta medicinal para o tratamento de dermatoses, infecções,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Samambaia; Atividade leishmanicida; Atividade tripanocida; Fração hexânica.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-37432013000100005

Nanopartículas de oro: aplicaciones y citotoxicidad in vitro
Provedor de dados: 40
Autores: Mateo,Diego; Morales,Paloma; Ávalos,Alicia; Haza,Ana I.
En los últimos años, la evolución en el desarrollo de productos elaborados a partir de nanotecnología ha experimentado un espectacular crecimiento. En particular, las nanopartículas de oro han despertado gran interés en los sectores biomédico y alimentario, donde se ha descrito su utilización en el tratamiento frente al cáncer o como parte integrante de envases resistentes a la abrasión, con propiedades antimicrobianas. Por tanto, se cree que la exposición humana a las nanopartículas de oro aumentará considerablemente en los próximos años, pudiendo tener esto repercusiones sobre la salud. En este marco, el estudio de la toxicología de las nanopartículas ha revelado que su toxicidad depende de multitud de factores. Además, en la bibliografía hay cierta...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oro; Nanopartículas; Citotoxicidad; Cáncer.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-37432013000200005

Intoxicación con Amanita phalloides: serie de tres casos
Provedor de dados: 40
Autores: Cortese,Silvia; Risso,Marina; Trapassi,J. Horacio.
Se presenta una serie de tres casos de pacientes adultos con intoxicación por Amanita phalloides, ocurridos entre los años 2010 y 2011. Dos pacientes eran de sexo masculino, de 40 y 75 años de edad, y la mujer de 65 años. En todos los casos se asoció el cuadro clínico a la práctica de recolección casera de hongos para preparación de alimentos (actividad sostenida durante más de 10 años en todos los casos). La recolección se realizó en zonas de robles en un caso, y en zonas de castaños en los otros dos casos. En los tres casos la consulta se realizó entre las 16 y 36 h de la ingesta. Los tres pacientes desarrollaron diarrea, hepatopatía y falla hepática sin encefalopatía. A todos se les realizó tratamiento con carbón activado seriado, aspirado duodenal y...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Hongos; Amanita phalloides; Recolección doméstica; Hepatotoxicidad.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-37432013000200006

Anticoagulant and factor Xa-like activities of Tityus discrepans scorpion venom
Provedor de dados: 40
Autores: Brazón,Josmary; Guerrero,Belsy; Suze,D; Sevcik, Carlos,Gina; Arocha-Piñango,Carmen L.
Tityus discrepans venom (TdV) produces a variety of haemostatic manifestations including alveoli fbrin deposition and/ or prothrombin and partial thromboplastin time (PT, PTT) alterations in mammals. In vitro studies have demonstrated that TdV contains tissue plasminogen activator-like (t-PA), fbrinolytic and plasmin inhibitory compounds and produces platelets activation through GPVI and a novel Src-dependent signalling pathway. The aim of this study is to describe the initial characterization of procoagulant and anticoagulant components from TdV. This venom was fractionated by exclusion molecular chromatography on a Sephadex G-50 column. The eluted material was collected as fve fractions called S1 to S5. These fractions and the whole venom were used to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Scorpion; Coagulation; Fibrinogen; Factor Xa.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-37432013000100003

Genotoxicidad de mezclas de pesticidas: ¿algo más que la suma de las partes?
Provedor de dados: 40
Autores: Coalova,Isis; Mencacci,Santiago; Fassiano,Anabella V.
Un factor decisivo de la Revolución Verde ha sido el desarrollo y aplicación de plaguicidas para combatir una gran variedad de organismos considerados perjudiciales por el hombre, que afectan la productividad de los cultivos de interés agronómico. Sin embargo, el incremento sostenido del uso de pesticidas trajo aparejado un aumento de la presencia de los mismos en el ambiente, llegando a afectar a los ecosistemas y a la salud humana. La exposición de las poblaciones a plaguicidas, se da en forma de mezclas complejas, tanto por la aplicación de distintos plaguicidas en simultáneo como por la presencia de aditivos en las formulaciones comerciales. Teniendo en cuenta la producción científica relacionada en los últimos años, el objetivo de este trabajo fue...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Genotoxicidad; Mezclas; Pesticidas; Monitoreo.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-37432013000100001

Afectación de las funciones cognitivas y motoras en niños residentes de zonas rurales de Jujuy y su relación con plaguicidas inhibidores de la colinesterasa: Un estudio piloto
Provedor de dados: 40
Autores: Martos Mula,Ana J; Saavedra,Olga N; Wierna,Norma R; Ruggeri,María A; Tschambler,Javier A; Ávila Carreras,Natalia M; Bonillo,Mario C; Bovi Mitre,María G.
El objetivo de este trabajo fue estudiar el efecto de la exposición a plaguicidas en las funciones cognitivas y motoras de 42 niños de una zona rural con mayor probabilidad de exposición a plaguicidas organofosforados y carbámicos (Yuto, Jujuy). Los resultados de las pruebas realizadas para estudiar el efecto fueron comparados con los resultados obtenidos con 29 niños con menor exposición a plaguicidas (León, Jujuy). A todos los participantes se les realizó historia clínica, evaluación médica, revisión de antecedentes, pruebas neuroconductuales, de motricidad gruesa y equilibrio, y medición de biomarcadores (colinesterasa plasmática y eritrocitaria). Se realizó una historia clínica neurológica estándar con las siguientes pruebas: Subtest de Dígitos y...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Niños; Organofosforados y carbamatos; Neurotoxicidad; Colinesterasas plasmática y eritrocitaria.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-37432013000100002

Effect of ultrasonication of Switchgrass on fermentable sugar production and biomass physical structure
Provedor de dados: 111
Autores: Sharma, Rajat; Sharma-Shivappa, Ratna R.; Boyette, Michael D.; Stikeleather, Larry F.
Pretreatment of lignocellulosic biomass for enhancing sugar yields has been studied extensively over the years.  Conventional methods employed to preprocess biomass to make it conducive for enzymatic hydrolysis have been hampered by issues like poor energy efficiency and production of undesirable by-products.  Ultrasonication, which involves the treatment of biomass through ultrasonic sound waves in a liquid medium without additional chemicals, is believed to have potential for biomass pretreatment.  In this study the effects of ultrasonication on switchgrass, a potential feedstock for bioethanol production due to its high cellulosic content, were investigated.  Results of compositional analysis and scanning electron microscopy conducted to visualize...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Panicum virgatum; Amplitude; Pretreatment; Hydrolysis; Scanning electron microscopy.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2549

Fuel consumption of some tractor models for ploughing operations in the sandy-loam soil of Nigeria at various speeds  and ploughing depths
Provedor de dados: 111
Autores: Adewoyin, Adewale Olaniyi; Ajav, Emmanuel Atoo.
Tractors acquired in Oyo State-Nigeria are primarily utilized for ploughing operations which represents the most costly single item in the budget of an arable farmer.  Tractor fuel consumption constitutes a significant parameter that affects tractors performances for ploughing operations.  The effect of ploughing speed and depth on tractors fuel consumption was therefore examined in a bid to establish their optimum operating conditions.  The soil characteristics of the study site were determined using laboratory tests.  Ploughing operations, using ASABE standard D497.5, were carried out on 100×500 m research farmland using Massey Ferguson (MF 435, 100 hp), Fiat (F130D, 100 hp) and Steyr(CVT170, 100 hp) tractors that were purchased in 2009.  Field...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural Engineering; Farm Power and Machinery Tractor performance; Soil types; Ploughing depth; Ploughing speed; Fuel consumption.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2466

Performance characteristics of Jatropha ethyl ester as diesel engine fuel at different compression ratios
Provedor de dados: 111
Autores: Kumar, Rajneesh; Dixit, Anoop Kumar; Singh, Shashi Kumar; Singh, Gursahib; Khurana, Rohinish.
The results of the performance and emission of a variable compression ratio ignition engine (vertical single cylinder) by using Jatropha ethyl ester blends with diesel fuel at two levels of compression ratio (16.5:1 and 18.5:1) have been presented in this paper.  The fuel samples were prepared by blending Jatropha ethyl ester with diesel in the composition of 0:100, 10:90, 20:80, 30:70 and 40:60 (%).  Results indicated that Brake thermal efficiency for all biodiesel blends was more as compared to diesel.  Brake thermal efficiency increased with the increase in load and also increased with the increase in compression ratio.  Brake specific fuel consumption in case of blends was more as compared to diesel.  Brake specific fuel consumption decreased with the...
Tipo: Info:eu-repo/semantics/article
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/1987

Drying studies of patchouli spent charge – in special reference to its use in incense sticks production
Provedor de dados: 111
Autores: Ramya, H. G.; Palanimuthu, V.
The Patchouli (Pogostemon cablin Benth.) herbaceous medicinal plant is a member of the Lamiaceae family, and is grown for its essential oil extraction.  Aromatic patchouli herbage after steam distillation of essential oil is currently a waste material that can be advantageously used in incense sticks production if dried and powdered to a suitable particle size.  To use this waste spent charge (herbage after steam distillation) in the incense sticks production, drying study of this wet material was conducted.  The drying characteristics of patchouli spent charge were studied under various methods, namely, tray, shade and sun drying.  The initial drying bed thickness was uniformly maintained at 50 mm in all the methods and the spent charge was dried from...
Tipo: Info:eu-repo/semantics/article
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2304

Power productivity enhancement using performance analysis of biomass gasifier at energy park, RGTU Bhopal (MP, India)
Provedor de dados: 111
Autores: Baredar, Prashant; Pandey, Mukesh; Dixit, Savita; Pandey, Dr.Mukesh; Kumar, Anil.
 Abstract: The concept paper represents possible opportunities for strategic investment in remote area development and further due attention is paid to determine its feasibility.  We examined the status and performance of biomass gasification unit for electricity generation fuelled by woody biomass installed at Energy Centre, Rajiv Gandhi Technological University Bhopal, (India).  The main objective of the research project is to utilize the resources of existing biomass feedstock and make performance analysis under purpose of fulfilling the electrical demand of Energy Centre Rajiv Gandhi Technological University Bhopal (India) and rural users in powering of their home lighting, by means of renewable energy.  The results of the work will be useful for the...
Tipo: Info:eu-repo/semantics/article
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/1119

Effects of tillage systems and mechanization on work time,  fuel and energy consumption for cereal cropping in Austria
Provedor de dados: 111
Autores: Moitzi, Gerhard; Szalay, Tibor; Schüller, M.; Wagentristl, H.; Refenner, K.; Weingartmann, H.; Liebhard, P.; Boxberger, J.; Gronauer, A.
The machinery stock, fuel consumption and work time are crucial economic factors for the profit potential in the arable farming sector.  The influence of five soil tillage systems (two conventional tillage systems and three conservation tillage systems) and two tractor sizes (92 kW-tractor and 59 kW-tractor) on work time, fuel and energy consumption was measured in the semi-arid region in Austria.  The tractors were equipped with a high-performance flow meter and a radar sensor to measure the fuel consumption (L h-1) and working speed (km h-1).  The conventional tillage with mouldboard plough has the highest working time and fuel consumption rate.  The replacement of plough with a cultivator, reduces the work time and fuel consumption for soil tillage as...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural Engineering fuel consumption; Mechanization; Tillage system; Work time.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2625

Energy input–output analysis and mechanization status for cultivation of rice and maize crops in Sikkim
Provedor de dados: 111
Autores: Yadav, S. N.; Chandra, R.; Khura, T. K.; Chauhan, N. S.
Rice and maize are main cereal crops cultivated in Sikkim.  In this paper energy input–output and the level of agricultural mechanization for cultivation of rice and maize in Sikkim state of India has been presented.  The data were collected on area under rice and maize crops, sources of power and agricultural tools/implements used total production through village survey.  It has been observed that the traditional practices of cultivation of rice and maize crops consumed an average energy input of 3338.984 MJ ha-1 and 4386.435 MJ ha-1 respectively.  Data analysis showed that about 60% of the total input energy in the present cultivation practices comes from human and animal power sources.  The output–to–input energy ratio was observed to be 7.66 and 5.86...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Energy in Agriculture Agricultural mechanization in Sikkim; Energy input and output; Rice and maize crops; Grain productivity.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2394

Possibility of using neural networks for moisture ratio prediction in dried potatoes by means of different drying methods and evaluating physicochemical properties
Provedor de dados: 111
Autores: Yaghoubi, Marjan; Askari, Bijan; Mokhtarian, Mohsen; Tavakolipour, Hamid; Elhami Rad, Amirhosein; Jafarpour, Afshin; Heidarian, Soodabeh.
Potato cubes were dried by different drying methods.  After the end of drying process, the experimental data were first fitted to the four well-known drying models.  The results indicated that the logarithmic and page models performed better compared with the other models.  Also, in this study neural networks were used in order to possibly predict dried potato moisture ratio (y), based on three input variables of drying time, drying temperature and different methods.  The results revealed that, logsig function based on 10 neurons in the first hidden layer could perform as the best goodness configuration for predicting the moisture ratio.  The comparison of the obtained results of ANNs and classical modeling indicated that, the neural networks have a higher...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Extraction kinetics; Time constant; Extract concentration; Extraction yield; Medicinal herbs.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2590

Comparison of visible-near infrared and mid-infrared spectroscopy for classification of Huanglongbing and  citrus canker infected leaves
Provedor de dados: 111
Autores: Sankaran, Sindhuja; Ehsani, Reza.
In this study, visible-near infrared spectroscopy and mid-infrared spectroscopy were compared to evaluate their applicability in classifying citrus leaves infected with canker and HLB from healthy citrus leaves.  The visible-near infrared spectra in the range 350-2,500 nm and mid-infrared spectra in the range of 5.15-10.72 µm were collected from healthy and diseased (canker, HLB) leaves.  Following the spectral data collection, the data were preprocessed and classification was performed using two classifiers, quadratic discriminant analysis (QDA) and k-nearest neighbor (kNN).  The classifiers (QDA, kNN) resulted in an average overall and individual class classification accuracy of about 90% or more.  Mid-infrared spectroscopy provided high classification...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural engineering Disease detection; Classification; Quadratic discriminant analysis; K-nearest neighbor; USA.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2469

Moisture-dependent physical and mechanical properties of hawthorn (Crataegus aronia)
Provedor de dados: 111
Autores: Jaliliantabar, Farzad; Lorestani, Ali Nejat; Jaliliantabar, Farzad Jaliliantabar.
 In this study, some important physical and mechanical properties of the hawthorn and the effect of moisture on them were investigated.  The effect of moisture at two levels (64.01% and 70.1%, w.b.) on the geometric dimensions (length, width, thickness, arithmetic mean diameter, geometric mean diameter, degree of sphericity, surface area, projected area, criteria projected area, mass, volume and the apparent), true density, porosity, coefficient of static friction and coefficient of rolling on three levels (wood, glass and galvanized) and mechanical properties obtained by impact testing machine using a randomized factorial design was evaluated by software SPSS18.  Results indicate that moisture has an effect on the physical properties of the hawthorn.  The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hawthorn; Physical properties; Maximum force at impact; Mechanical properties; Moisture content.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2676

Quality of dried carrot pomace powder as affected by pretreatments and methods of drying
Provedor de dados: 111
Autores: Alam, Md. Shafiq; Gupta, Kalika; Khaira, Harjot; Javed, M.
In order to develop dried carrot pomace of high quality, experiments were conducted in completely randomized design (CRD).  The carrot pomace was subjected to various blanching pretreatments i.e. water blanching (WB), steam blanching (SB), citric acid blanching (CB) and potassium metabisulphate (KMS) dipping after blanching (WBS).  A control sample (untreated, UT) was kept for comparison.  The samples were further dried by various drying methods i.e. convective drying (55°C and 65°C), sun drying and solar drying.  The 65°C convective dried samples witnessed minimum drying time with higher fiber, total carotenoids, β-carotene content and minimum change in color parameters.  Among the blanching pretreatments, the CB pretreatment showed better efficacy in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carrot pomace; Pretreatments; Blanching; Drying; Physicochemical properties.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2541

Failure rate analysis of four agricultural tractor models in southern Iran
Provedor de dados: 111
Autores: Afsharnia, Fatemeh; Asoodar, Mohammad Amin; Abdeshahi, Abbas; Marzban, Afshin.
Tractors play an important role in agricultural mechanization.  A repairable mechanical system (as agricultural tractor) is prone to deterioration or repeated failures.  In this study, the owners of three hundred tractors, which include Massey Ferguson (MF285 model and MF399 model), John Deere (JD3140 model) and Universal (U650 model), were interviewed, from five regions of Khouzestan Province.  A regression model was used to predict the tractors failure rate.  The machine failure pattern was carefully studied and key factors affecting the failure rate were identified in these regions.  The data obtained from farm records valid by using questionnaire was separated into two groups according to how those tractors were stored.  Results showed that the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Failure rate; Tractor; Storage condition; Khouzestan.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2651

Studies on Refrigerated Storage of Minimally Processed Papaya  (Carica papaya L.)
Provedor de dados: 111
Autores: Alam, Md. Shafiq; Kaur, Baljinder; Gupta, Kalika; Kumar, Sunil.
Experiments were conducted in completely randomized design in order to assess the shelf-life and quality of minimally processed papaya stored under refrigerated condition (5+10C and 95% RH). Before minimal processing, the semi riped whole papaya was divided into two lots: control (untreated) and mild heat pretreated. The mild heat pretreatment (MHPT) of 450C constant temperature for different exposure time (15, 30 and 45 minutes) was given to whole papaya followed by 24 hrs conditioning in cold room (10C and 95% RH). The minimally processed papaya samples were then dipped in 100 ppm sodium hypochlorite solution for 30 seconds followed by 6hrs dipping in 4.0 % calcium hydroxide solution. Both the untreated and mild heat pretreated samples were packed in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Minimal processing; Mild heat pretreatment; Papaya; Storage.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2611

Energy analysis of three energy crops in Greece
Provedor de dados: 111
Autores: Gemtos, T. A.; Cavalaris, C.; Tagarakis, A.; Fountas, S.
To assess the potential of energy crops to provide a stock material for biofuel production three crops (rapeseed, sunflower and sweet sorghum) were studied in field experiments in Thessaly, Central Greece in 2007 and 2008.  The cropping activities were recorded.  Energy analysis was carried out to assess benefits from the crops.  Power requirements and energy consumption during field operations were measured directly using instrumented tractors.  Literature data was used for the energy sequestered to the inputs of the system (indirect energy).  Energy budgets were produced taking into account as output either the seed or including the stalks for the two oil seed crops.  The results showed that in all cases positive energy balances were achieved.  Analysis...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural engineering rape seed; Sunflower; Sweet sorghum; Energy analysis; Net energy; Energy efficiency coefficient.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2244

Vibration analysis of a small diesel engine using diesel-biodiesel fuel blends
Provedor de dados: 111
Autores: Heidary, Bahareh; Hassan-beygi, S. R.; Ghobadian, B.; Taghizadeh, A.
Biodiesel as an environmentally friendly fuel has the potential to provide comparable engine performance results.  Biodiesel is a renewable fuel produced from vegetable and seed oils, animal fats or waste edible oils.  Sound and vibration caused by the combustion process in the engine might have direct effects on users.   One of the important characteristics of diesel fuels is high noise and vibration.  The present study was carried out to examine the vibration of different diesel-biodiesel fuel blends in power tiller engine.  The main goal was to present fuels with the minimum vibration.  So, the time domain signals were analyzed in five levels of engine speed, three axes and six fuel blends on the engine.  The signal processing and statistical approach...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vibration analysis; Power tiller; Time domain; Frequency domain; Diesel-Biodiesel fuel blends.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2475

Mechanical processing and temperature effect on lime shrinkage
Provedor de dados: 111
Autores: Fadavi, Ali; Mehrabi, Ali Ashraf.
Low shrinkage is an important parameter in marketing of dried lime fruits.  An experiment conducted in order to evaluate affective factors on shrinkage coefficient of a dried lime fruit.  Factors are defined as position of rest (vertical and horizontal), mechanical processing (length needling, width needling, slotting and intact or no processing), and temperature (shadow dried, sun dried, 40oC, 105oC and 200oC).  Measured characters on a fruit were initial volume, final volume, and shrinkage coefficient.  The average initial moisture content of limes was 476 % kg (kg db)-1.  The position factor had no significant effect on shrinkage coefficient, but mechanical processing and temperature affected the final volume and consequently the shrinkage coefficient...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lime; Shrinkage; Drying; Mechanical processing and temperature.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2492

Design a capacitive sensor for rapid monitoring of seed rate of sugarcane planter
Provedor de dados: 111
Autores: Taghinezhad, Javad; Alimardani, Reza; Jafary, Ali.
A capacitive sensor method for measuring billet spacing uniformity with sugarcane (Saccharum officinarm L.) billet planter is investigated in this paper.  Therefore, an electronic device based on capacitive sensor was designed and developed to predict the planting spacing of sugarcane billets.  It consisted of four components: a rectangular parallel plate capacitor, electronic circuitry, microcontroller, and display unit.  Accordingly, a prototype of the precision metering device for sugarcane billets was developed.  After calibrating the monitoring system, the results were verified with calibrated curve by means of linear regression and paired T-test.  The performance of the device, including quality of feed index (QFI), multiple index and miss index was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Capacitive system; Sugarcane; Compare monitoring; Performance indices; Precision planting.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2576

Effect of temperature on viscosity of kokum, karonda,  mango pulp and cashew apple syrup
Provedor de dados: 111
Autores: Swami, Shrikant Baslingappa; Thakor, Nayan Singh; Wagh, Seema S.
The viscosity of the food products (kokum, karonda, mango pulp and cashew apple syrup) was determined at temperatures 20ºC, 30ºC, 40ºC, 50ºC and 60ºC and at different spindle speed such as 0.07, 0.09, 0.1, 1.1 and 17 r min-1 for mango pulp and 17, 140, 150, 160, 180 and 200 r min-1 for kokum, karonda and cashew apple syrup using Brookfield viscometer.  The kokum, karonda, mango pulp and cashew apple syrup showed shear thinning behavior and pseudo-plastic in nature (n
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Food Engineering; Food Process Engineering; Food Science; Food Rheology kokum; Karonda; Mango pulp; Cashew apple syrup; Rheology; Viscosity.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2617

Development of an active evaporative cooling system for short-term storage of fruits and vegetable in a tropical climate
Provedor de dados: 111
Autores: Chinenye, Ndukwu Macmanus; Manuwa, S. I.; Olukunle, O. J.; Oluwalana, I. B.
An active evaporative cooler for short-term storage of fruits and vegetable has been developed to improve the shelf life of fruits and vegetables for small holder farmers in Southern Nigeria.  The evaporative cooler uses palm fruit fiber as cooling pad material which is considered a waste in palm oil production in Nigeria and consists of three suction fan, automatic water control switch, water pump and evaporative cooling chambers.  The performance of cooler was evaluated in terms of temperature drop, efficiency of the evaporative cooling and cooling capacity.  The temperature drop ranged from 40C to 130C while the relative humidity of the ambient air was increased to 96.8%.  The cooler could drop the temperature close to wet bulb depression of ambient air...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural engineering cowpea; Mechanical damage; Moisture content; Threshing efficiency; Variety.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2655

Economic comparison of tillage and planting operations in  three tillage systems
Provedor de dados: 111
Autores: Akbarnia, A.; Farhani, F.; Heidary, B.
 To study the economy of tillage operations and present suitable systems for land preparation and planting, costs of execution of three different tillage operations in irrigated wheat crop were compared for three successive years.  The three systems include: conventional or maximum tillage (Max-till), reduced tillage (Red-till) using multitask machine, and using direct planting machinery to represent the no-tillage case (No-till).  Costs were composed of rental cost of tractor, the used implements, multitask machine and direct planting machine.  For each case, data were compared and analyzed in randomized block design.  The variance of wheat yield in the three tillage systems was significant at the 1% level.  Total costs per hectare were 109 and 78 and 46...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Costs of production; Field performance; No-till; Maximum tillage; Multi-task machine; Reduce tillage; Soil compaction.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2476

Development and evaluation of metal rolling machine for small-scale manufacturers
Provedor de dados: 111
Autores: Segun Raphael Bello; Department of Agricultural &amp; Bio-Environmental Engineering Technology Federal College of Agriculture, Ishiagu, 480001, Nigeria.
 The global drive toward intermediate technology and sustainable development motivated the development of sheet metal rolling machines for small-scale artisanal manufacturers.  This paper presents the design, construction and evaluation of a sheet metal rolling machine for small-scale enterprises.  The machine consists of three rollers; a rigid forming roller, a free floating roller and a drive roller arranged triangularly with two handles for shape-rolling.  The rollers were made of galvanized metal pipe, 1,050 mm long, 76 mm diameter, each approximately, 3 mm thickness; a driving shaft 1,220 mm long, 16.6 mm diameter and 4 pieces of mild steel washers to provide support to shaft and also to limit the bending stress on the rollers.  The entire system is...
Palavras-chave: Agricultural Engineering; Wood products.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/1759

Solid-liquid extraction of sorrel calyces with ethanol
Provedor de dados: 111
Autores: Olawale, Adegboyega Surajudeen.
  Ethanol extraction of three particle size distributions of sorrel (Hibiscus sabdariffa) calyces was investigated.  Extraction rate was found to increase with reduced particle size, increased temperature and solvent mass (solvent-feed ratio).  At 30oC, maximum yield or concentration was achieved with 50:1 solvent-feed ratio but no substantial increment occurred in these parameters beyond 20:1 ratio.  No degradation of the extract’s components occurred between 27oC and 70oC since linear relation between extraction yield and temperature was sustained.  Peleg equation and a variant of it gave the best fit for extraction kinetics.  The smallest calyx particles (
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Extraction kinetics; Time constant; Extract concentration; Extraction yield; Medicinal herbs.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2577

Influence of tyres characteristics and travelling speed on ride vibrations of a modern medium powered tractor Part I: Analysis of the driving seat vibration
Provedor de dados: 111
Autores: Servadio, Pieranna; Belfiore, Nicola Pio.
In the present investigation a contribution is offered in order to improve the knowledge of the influence of both speed and tyre type on a medium power tractor vibrations.  The vibrations transmitted from the ground to the driver’s seat of a ballasted wheeled tractor of medium power, equipped with a front suspension axle and a suspended cab, have been measured and analyzed.  Two different tyres, namely, types A and B, at two different forward speeds, 11.1 and 13.9 m s-1, have been experimentally tested, during the simulation of the front agricultural implements transportation on a rectilinear plane tract of a conglomerate bituminous closed track.  This work has been done by applying standards recommended by ISO 2631/1, 1997.  Results were obtained on the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural Engineering; Ergonomics tractors; High speed; Whole body vibrations; Tyres.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2543

Case study about field trial responses of the zero energy storage system
Provedor de dados: 111
Autores: Islam, M. P.; Morimoto, T.; Hatou, K.; Hassan, L.; Awal, M. A.; Hossain, S. T.
A low cost ‘Zero Energy Cool Chamber (ZECC)’ has been developed for storing fruits and vegetables by usingpassive evaporative mechanism. This paper presents the results of a survey on the farmer’s opinion regarding the exploitationof zero energy storage system. This survey was conducted at Mymensingh district of Bangladesh from 2011 to 2012 and italso revealed that most of the farmers sell their produce to the middlemen just after the harvest. Lack of transportation facility, shortage of energy supply and lack of investment on storage, lower price of vegetables during the harvesting season, farmers in the rural areas often sell their products to the middleman or in the local market at low prices. They are not even able to get the return of invested money...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural produces; Storage; Farmer’s perception; Quality; Benefit; Bangladesh.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2534

Engineering properties and bruise susceptibility of peach fruits (Prunus persica)
Provedor de dados: 111
Autores: Tabatabaekoloor, Reza.
In order to better design and modification of peach post harvesting systems such as sorting, conveying and packaging, selected engineering properties and bruise susceptibility of two Iranian peach varieties (Elberta and Spring time) were determined.  Physical and mechanical properties such as dimensions, mass, volume, projected area, surface area, sphericity, static friction and rolling resistance coefficients on various surfaces, firmness and compressibility were measured.  Also, effect of cultivar, drop height (50, 100 and 150 mm) and contact surface material (fruit, steel and rubber) on the bruise area and volume were investigated.  Analysis of variance results indicated that cultivar had a significant effect (p
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agriculture; Postharvest peach  physical and mechanical properties  bruise area  bruise volume.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2570

Modeling for predicting soil wetting radius under point source surface trickle irrigation
Provedor de dados: 111
Autores: Rangavajhala Subbauah; Centre of Excellence on Soil and Water Management, Research Training and Testing Centre, Junagadh Agricultural University, Motibaugh, Junagadh-362 001, Gujarat, India; Harshad Hemrajbhai Mashru; Centre of Excellence on Soil and Water Management, Research Training and Testing Centre, Junagadh Agricultural University, Motibaugh, Junagadh-362 001, Gujarat, India.
Irrigation practices that are profligate in their use of water have come under closer scrutiny by water managers and the public.  Trickle irrigation has the propensity to increase water use efficiency only if the system is designed to meet the soil and plant conditions.  Information on moisture distribution patterns under point source trickle emitters is a pre-requisite for the design and operation of trickle irrigation systems.  This will ensure precise placement of water and fertilizer in the active root zone.  For many practical situations, detailed information on matric potential or water content distribution within the wetted volume is not necessary and prediction of the boundaries and shape of the wetted soil volume suffice.  Simple models are more...
Palavras-chave: Trickle irrigation; Wetted radius; Simple heuristic model.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/1829

Towards the implementation of the Green Building concept in agricultural buildings: a literature review
Provedor de dados: 111
Autores: Mohamed Samer; Cairo University, Faculty of Agriculture, Department of Agricultural Engineering.
The “Green Building” is an interdisciplinary theme, where the green building concept includes a multitude of elements, components and procedures which diverge to several subtopics that intertwined to form the green building concept.  Generally, the green building is considered to be an environmental component, as the green building materials are manufactured from local eco-sources, i.e. environmentally friendly materials, which are then used to make an eco-construction subject to an eco-design that provides a healthy habitat built on the cultural and architectural heritage in construction while ensuring conservation of natural resources.  This ensures disassembling the building components and materials, after a determined building lifetime, to...
Palavras-chave: Agricultural Engineering; Agricultural Buildings and Bioenvironmental Engineering green building; Agricultural buildings; Biocement; Eco-cement; Green concrete; Green roofs; Low-energy building; Zero-carbon building; Eco-construction.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2329

Determination of agricultural soil compaction affected by tractor passing using 3D finite element
Provedor de dados: 111
Autores: Meghdad Nasiri; Mahmoud Soltani; As'ad Modarres Motlagh.
Recently, soil compaction is one of the main problems of farmers and the main parameters of efficiency reduction of crops in some areas due to increasing in weight and size of agricultural tractors and passing of them in the field.  In this research, for determining of soil compaction after tractor passing, the numerical and empirical methods were used.  In empirical method, a Massy Ferguson tractor with a 3 moldboard mounted plough was used.  The experiment was carried out in the university of Urmia farmland.  The soil’s physical properties were measured in three portions, front of wheels before transmission, after transmission frontal wheel and after transmission hinder wheel in depth of 0 - 5, 5 -10 and 10-15 cm respectively.  The resistance of soil was...
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2433

Comparative analysis of exhaust gases from MF285 and U650 tractors under field conditions
Provedor de dados: 111
Autores: Rashid, Gholami; Hekmat, Rabbani; Ali Nejat, Lorestani; Payam, Javadikia; Farzad, Jaliliantabar.
Agricultural machinery is an important source of emission of air pollutant in rural locations.  This work deals with the effects of types of tractors and operation conditions on engine emission.  The values of some exhaust gases (HC, CO, CO2, O2 and NO) from two common tractors (MF285 and U650) at three situations (use of ditcher, plowing and cultivator) were evaluated in the West of IRAN (Kermanshah).  In addition, engine oil temperature at operation conditions was measured.  Also results showed the values of exhaust HC and O2 of MF285 are lower than U650, while the other exhausts gases (CO, CO2, and NO) of MF285 are higher than U650.  Value of NO emission increased as engine oil temperature increased.  All of exhaust gases except CO have a significant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Environmental pollution; Exhaust gases; Tractors.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2363

Even-sowing pattern strategies for a low-input organic system in forage maize
Provedor de dados: 111
Autores: Blas Morente, Alejandro; Barreiro Elorza, Pilar; Hernández Díaz-Ambrona, Carlos Gregorio; Dias Da Costa, Gabriel; Griepentrog, Hans Wermer.
The objective of this study was to verify the effectiveness of new patterns of sowing and to achieve a low-input organic system in two different environments (northern and southern Europe).  The study was motivated by the hypothesis that more even sowing patterns (triangular and square) would significantly enhance the growth and yield of forage maize under widely varying conditions, compared with traditional mechanised rectangular seed patterns.  An experiment was conducted in Madrid and duplicated in Copenhagen during 2010.  A random block design was used with a 2 × 2 factorial arrangement based on two seed-sowing patterns: traditional (rectangular) and new (even) and two weed-management conditions (herbicide use and a low-input system).  In both...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: (Agronomy; Plant science; Machinery; Environment) weed-control strategies  alternative seed patterns  precision agriculture  environmental management.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2442

Production of cellulosic ethanol from wood sawdust
Provedor de dados: 111
Autores: Nwakaire, J. N.; Ezeoha, Sunday L.; Ugwuishiwu, B. O.
Energy from fossil fuels has played a very important role in our lives, but such an important role has been clouded out due to the environment hazards caused from fossil emissions.  This has led to a new dimension in energy utilization known as renewable energy fuels.  To fully support this type of energy from biological mass, adequate biomass source must be harnessed.  This work thus was carried out to utilize a local available biomass waste as an alternative source of ethanol which is currently used for spark ignition engines as a renewable energy fuel.  It also determined the yield of ethanol from the sawdust used.  The sawdust sample was collected from the Nsukka Sawmill (Timbershade).  Materials used included 18 m (78% concentration) of sulphuric...
Tipo: Info:eu-repo/semantics/article
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/1662

Convective dehydration kinetics of noodles prepared from  taro (Colocasia esculenta), rice (Oryza sativa) and pigeonpea  (Cajanus cajan) flours
Provedor de dados: 111
Autores: Kaushal, Pragati; Sharma, Harish Kumar.
Drying characteristics of noodles prepared from 50% taro and remaining equal proportions of rice and pigeonpea flours were investigated in a convective type dryer for a temperature range of 50°C to 80°C at a constant air velocity of     1.5 m s-1.  Results indicated that drying took place in falling rate period.  The sample dried at 50°C was found better in color as compared to samples at 60°C, 70°C and 80°C.  The rehydration weight of noodles decreased with the increase in drying temperature.  Moisture transfer from noodles was described by applying Fick’s diffusion model and the effective moisture diffusivity was calculated.  Effective moisture diffusivity increased with increase in temperature.  An Arrhenius relation with activation energy of 38.53 kJ...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Noodle; Taro; Dehydration kinetics; Temperature; Moisture.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2132

Maintenance management of tractors and agricultural machinery: Preventive maintenance systems
Provedor de dados: 111
Autores: Khodabakhshian, Rasool.
Agricultural machinery maintenance has a crucial role for successful agricultural production.  It aims at guaranteeing the safety of operations and availability of machines and related equipment for cultivation operation.  Moreover, it is one major cost for agriculture operations.  Thus, the increased competition in agricultural production demands maintenance improvement, aiming at the reduction of maintenance expenditures while keeping the safety of operations.  This issue is addressed by the methodology presented in this paper.  So, the aim of this paper was to give brief introduction to various preventive maintenance systems specially condition-based maintenance (CBM) techniques, selection of condition monitoring techniques and understanding of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural machinery; Fault detection; Fault diagnosis; Signal processing; Maintenance management.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2616

On-site measurement of soil moisture content using an acoustic system
Provedor de dados: 111
Autores: Meisami-asl, Elham; Sharifi, A.; Mobli, Hossein; Eyvani, Afshin; Alimardani, Reza.
Precision agriculture is a farming management concept based on observing and responding to intra-field variations.  One of the most important soil properties in farming is soil moisture content and it is necessary to develop new technique for measuring this property in a precision farming system.  This study investigates the measurement of moisture content in soil using an on-site, easy to use and real-time acoustic wave system.  The system consists of the propagation of acoustic waves such as sweep frequency sound wave (10-300 Hz) and multiple tone sound waves (120 Hz) through the soil.  Some properties of these acoustic waves enable estimation of soil water content such as peak amplitude (A), total power (TP), total harmonic distortion (THD) and signal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Keywords: acoustic waves; Soil moisture content; Sound properties.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2571

Performance of supplementary irrigation systems for corn silage in the sub-humid areas
Provedor de dados: 111
Autores: Mostafa, Harby M. S.; Derbala, Asaad.
In the humid and sub-humid areas, agricultural production is largely rain fed and this needs to be urgently supplemented by irrigation practice if the country is to meet its food demand.  A two years study was carried out at the experimental site of the Institute of Agricultural Technology and Biosystems Engineering, Johan Heinrich von Thünen Institute (vTI), Braunschweig, Germany to compare performance of maize crop for silage production using three different irrigation systems; rain fed, drip and rain-gun sprinkler.  Growth parameters such as plant height, stem diameter were measured.  The total yields of silage were obtained for all treatments at the harvesting.  The experimental results reveal that total yields obtained from different treatments were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Silage; Performance; Drip; Rain-gun; Rain-fed irrigation; Water use efficiency.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2572

Design of waste stabilization ponds for dairy processing plants in Uganda
Provedor de dados: 111
Autores: Menya, Emmanuel; Wangi, G. M.; Amanyire, F.; Ebangu, B.
Waste stabilization ponds (WSP) were designed to treat 287.5 m3 day-1 of wastewater generated from processing of 100 m3 of milk per day.  The design involved use of existing models including those developed by Mara to size the anaerobic, facultative and maturation ponds.  The design temperature was 250C.  The anaerobic pond was designed based on volumetric organic loading rate while facultative pond was designed based on surface loading rate.  On the other hand, the maturation pond was designed based on the number of coliform bacteria removed per 100 mL of wastewater.  The anaerobic pond was designed to remove 70% BOD, facultative pond-75% and maturation pond-25% BOD.  In addition, the maturation pond was designed to have a coliform bacteria removal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dairy; Waste stabilization ponds; Anaerobic; Facultative; Maturation; Uganda.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2388

Foam-mat drying of shrimp: characterization and drying kinetics of foam
Provedor de dados: 111
Autores: Azizpour, Mehran; Mohebbi, Mohebbat; Khodaparast, Mohammad Hossein Haddad; Varidi, Mehdi.
The effects of water: shrimp ratio and xanthan gum (XG) concentration on characteristics of shrimp foam were investigated.  Foams were prepared from shrimp puree by adding several xanthan gum concentrations (0.1, 0.2, 0.3 % w/w), water: shrimp ratios (2:1, 3.5:1, 5:1 w/w) and whipped for five minutes.  Incorporation of 0.2% w/w XG with 3.5:1 w/w water: shrimp ratio was selected because of having better characteristics of produced foams and then dried at 50, 60 and 70°C.  Results showed that stability and density of foam increased with increasing xanthan gum concentration.  However, increasing water : shrimp ratio caused to decrease in stability and density of foam.  As the temperature increased from 50 to 70°C, the drying time decreased to 55 minutes....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Activation energy; Effective diffusivity; Foam-mat drying; Foam characteristics; Modeling; Shrimp.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2339

Prioritization of watersheds using multi-criteria evaluation through fuzzy analytical hierarchy process
Provedor de dados: 111
Autores: Prajakta Aher; Research Scholar; J. Adinarayana; Associate Professor; S. D. Gorantiwar; Professor.
Conservation of available natural resources through demarcation of potential zones at micro level are primary necessitate for sustainable development, particularly in the fragile semi-arid tropics.  Delineation of potential zones for implementation of conservation measures above the entire watershed at similar occurrence is inaccessible as well as uneconomical; consequently it is a prerequisite to apply viable technique for prioritization of sub-watersheds (SWDs).  Keeping this in view, the present research attempted to study various morphological characteristics and to implement Geographical Information System (GIS) and Multi Criteria Decision Making (MCDM) through Fuzzy Analytical Hierarchy Process (FAHP) techniques for identification of critical...
Palavras-chave: Agricultural Engineering; Land and Water Engineering Fuzzy Analytical Hierarchy Process  Geographic Information System  Multiple Criteria Decision Making  Watershed prioritization  Conservation management.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2282

Influence of machine-crop parameters on the threshability of sorghum
Provedor de dados: 111
Autores: Saeidirad, Mohammad Hossein; Esaghzaeh, Mostafa; Arabhosseini, Akbar; Zarifneshat, Saeed.
The threshing section on combine harvester or thresher machine affects grain and stalk separation performance.  The present study is conducted with view to optimize important operational and crop parameters influencing the threshing of sorghum.  In this research, the effects of cylinder speed with four levels (13, 17, 21 and 25 m s-1), concave clearance (5, 10 and 15 mm) and feed rate (420, 500 and 590 kg h-1) were investigated on  un-separated seed percentage, damaged seed percentage and germination.  Result of ANOVA showed that cylinder speed had a significant effect on unseparated seed percentage and damaged seed percentage (P
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sorghum; Threshing quality; Cylinder thresher.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2319

Citrus black spot detection using hyperspectral image analysis
Provedor de dados: 111
Autores: Bulanon, Duke M.; Burks, Thomas F.; Kim, Dae G.; Ritenour, Mark A.
A recently discovered fungal disease called citrus black spot, is threatening the Florida citrus industry.  The fungal disease, which causes cosmetic lesions on the rind of the fruit and can cause a tree to drop its fruit prematurely, could possibly lead to a ban on sales of fresh Florida citrus in other citrus-producing states.  The objective of this research is to develop a multispectral imaging algorithm to detect citrus black spots based on hyperspectral image data.  Hyperspectral images of citrus fruits (Valencias) were collected in the wavelength range of 480 nm to 950 nm.  Five surface conditions were examined, citrus black spot, greasy spot, melanose, wind scar, and normal one.  The first part of the image analysis determined the optimal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural Engineering citrus disease; Multispectral imaging; Hyperspectral imaging.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2382

Performance of supplementary irrigation systems for corn silage in the sub-humid areas
Provedor de dados: 111
Autores: Harby M. S. Mostafa; Lecturer of Agricultural Eng.; Asaad Derbala; Assoc. Prof. of Agric. Engi.
In the humid and sub-humid areas, agricultural production is largely rain fed and this needs to be urgently supplemented by irrigation practice if the country is to meet its food demand.  A two years study was carried out at the experimental site of the Institute of Agricultural Technology and Biosystems Engineering, Johan Heinrich von Thünen Institute (vTI), Braunschweig, Germany to compare performance of maize crop for silage production using three different irrigation systems; rain fed, drip and rain-gun sprinkler.  Growth parameters such as plant height, stem diameter were measured.  The total yields of silage were obtained for all treatments at the harvesting.  The experimental results reveal that total yields obtained from different treatments were...
Palavras-chave: Silage; Performance; Drip; Rain-gun; Rain-fed irrigation; Water use efficiency.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2572

Radiometric density measurement for silage compaction in bunker silos
Provedor de dados: 111
Autores: Hoffmann, Thomas; Geyer, Sabine; Bittner, Jürgen; Kögler, Robert; Schima, Mirko.
Certain minimum densities should be targeted when storing silage in bunker silos.  However, farmers lack facilities to measure the actual density and then steer the compaction passes.  This study was aimed at developing a measuring device for onsite density measurement.  The basis of the measuring device was a source of caesium radiation with an activity of    37 MBq and a sodium iodide scintillation detector.  The measuring device used the backscattering method.  The source and detector were located in a measuring wheel that was connected with the tractor via the rear three-point linkage.  During measuring passes on bunker silos both the density increase in the case of several crossings and the elastic recovery of the material could be seen clearly.  In...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Post harvest; Storage; Feed silage compaction; Bunker silo; Silage density; Radiometric measuring device.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2486

Cap-hardening parameters of Cam-clay model variations with soil moisture content and shape-restricted regression model
Provedor de dados: 111
Autores: Mehari Zewde Tekeste; Deere&amp;Co; Desale H Habtzghi; Department of Statistics, The University of Akron, Akron, OH; Jos Koolen; Wagenigen University.
Modeling of soil elastic and permanent plastic volumetric strains (compaction) caused by loading from machinery vehicles using the modified Cam-clay soil constitutive model requires understanding the behaviors of compression and rebound parameters under unsaturated soil conditions.  Oedometer tests were conducted on a sandy loam, a loam, and a clay loam soil, all tropical soils, at three initial soil moisture contents and five maximum stress levels (50, 100, 200, 300 and 400 kPa).  The objectives were to investigate the effects of soil moisture content and maximum applied stress on the modified compression index (l*) and modified rebound index (k*) parameters of a modified Cam-clay soil model on the three soils and predict the compressibility indices using...
Palavras-chave: Modified compression index (l*); Modified rebound index (k*); Axial stress; Uniaxial compression cyclic test; Soil moisture; Soil types.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2214

Development of chitosan-glucose and chitosan-citric complexes edible coating to improve tomatoes post-harvest quality
Provedor de dados: 111
Autores: A., El-Beltagy; Eissa, Ayman H. Amer; S., El-Sayed.
 The effect of different shrimp chitosan molecular weights as well as shrimp chitosan complexes (chitosan-glucose and chitosan-citric) on the quality characteristics of the stored (at 7°C±2°C and 90% RH) tomato fruits (Lycopersicum esculentum) was investigated.  Coating tomatoes with high molecular weight chitosan (H.M.C.G) significantly improved firmness and weight loss.  The lowest weight loss was found in high molecular weight chitosan-glucose (H.M.C.G) treatment followed by the fruits coated with high molecular weight chitosan (HMC) and then uncoated tomato fruits.  Both molecular weights was clear on retarding the total acidity loss especially for stored tomato fruit coated with low molecular weight chitosan, while control tomatoes exhibited a larger...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural Engineering and postharvest technology Chitosan; Edible Coating; Tomatoes; Firmness and Weight loss.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2392

Subsurface drainage effects on soil penetration resistance and water table depth on a clay soil in the Red River of the  North Valley, USA
Provedor de dados: 111
Autores: Hans J. Kandel; NORTH DAKOTA STATE UNIVERSITY; Jack A. Brodshaug; North Dakota State University; Dean D. Steele; North Dakota State University; Joel K. Ransom; North Dakota State University; Tom M. DeSutter; North Dakota State University; Gary R. Sands; University of Minnesota.
  Since 1993, the Red River of the North Valley in North Dakota (ND) and Minnesota (MN), in the USA has experienced increased annual rainfall which has caused localized seasonal soil waterlogging and inhibited crop yield potential in the unique, high water table clay soils of the region.  Subsurface (tile) drainage has been increasingly considered by farmers to help reduce excess water in the crop root zone.  Producers desire to manage the water table for optimizing yield and trafficability of the field.  The objective of this research was to evaluate differences in soil penetration resistance and water table depth between subsurface (drained) and non-subsurface drained treatments (undrained), using water control structures, in fallow, and cropped soybean...
Palavras-chave: Agricultural and Biosystems Engineering; Plant Sciences Subsurface water management; Penetration resistance; Controlled drainage; Water table depth; Trafficability; USA.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2145

Growth, yield and nutrient uptake of guava (Psidium Guavaja L.) affected by soil matric potential, fertigation and mulching under drip irrigation
Provedor de dados: 111
Autores: Junaid Nazir Khan; Department of Soil and Water Engineering, Punjab Agricultural University, Ludhiana-141004, Punjab, India; Aanchal Kumar Jain; Punjab Agricultural University; Rakesh Sharda; Punjab Agricultural University; Navprem Singh; Punjab Agricultural University; Parampal Singh Gill; Punjab Agricultural University; Sumanjeet Kaur; Punjab Agricultural University.
Our objective was to examine the effect of plastic mulching, three soil matric potentials (SMP) treatments    {I1(-20 kPa), I2(-40 kPa), and I3(-60 kPa)} and three fertigation levels {F1(100%), F2(80%), and F3(60%) recommended dose of fertilizer} under drip irrigation conditions for nutrient uptake, growth parameters and yield in guava plants.  The experiments were set up in factorial randomized block design with eighteen treatment combinations.  The experiments were conducted during the year 2012-13.  The investigation indicated that the plant canopy spread in (N/S and E/W) directions was greatly affected by different treatments.  However, non-significant effects of interaction parameters were found on plant height, crop volume and plant girth.  The...
Palavras-chave: Water Management; Irrigation and Drainage Engineering; Soil and Water Engineering Psidium Guavaja L.  Soil matric potential  Mulching  Fertigation  Nutrients.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2480

Using online image processing technique for measurement the browning in banana during drying (a new and automatic method)
Provedor de dados: 111
Autores: Ebrahimi, Mohammad Ali; Mohtasebi, Seyyed Saeed; Rafiee, Shahin; Hosseinpour, S.
Determination and controlling of quality parameters can be useful for ordering and marketing of fruits.  Color is the first and the most important parameter in the visual appearance of fruits, specifically in banana.  The aim of this study is to use image-processing technique (online operation) to measure and analyze the color change of banana slices during thin layer drying.  Using online-image-processing technique resulted in designing a machine vision system to control the color change of products automatically.  The results show a linear relation with high correlation coefficient for L*, a* and b* (0.967, 0.962 and 0.991 respectively) between the data of the image-processing technique and the hold-hand colorimeter.  In this study, parameters of chroma,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Image processing; Machine vision; Online; Banana.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2522

Performance evaluation of motorized and treadle cowpea threshers
Provedor de dados: 111
Autores: Timothy, Adekanye Adesoye; Olaoye, Joshua Olanrewaju.
 A motorized thresher and a treadle cowpea thresher were evaluated in terms of threshing efficiency (%), throughput capacity (kg h-1), cleaning efficiency (%), mechanical damage (%) and percentage loss (%) for three commonly grown cowpea varieties in Nigeria.  The three varieties were 994, IAR48 and TVX.  The cylinder concave clearances were fixed at 13, 12 and 11 mm based on the major diameter of each cowpea variety.  The investigation was conducted at three levels of moisture contents (12.5%, 15% and 17% wet basis).  Evaluation results indicated that for motorized thresher threshing efficiency varied from 71.4 to 82.86%, 73.56 to 87.14% and 77. 63 to 88.57% while for treadle thresher threshing efficiency varied from 20.50 to 24.29%, 21.50 to 25.71% and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural and biosystems Engineering cowpea; Mechanical damage; Moisture content; Threshing efficiency; Variety.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2693

Physical properties of large cardamom cultivated in north eastern Himalayan region of Sikkim, India
Provedor de dados: 111
Autores: Khura, Tapan K.; Barman, Jitendra D.; Chandra, Ram; Yadav, Sobh N.; Chauhan, Narvendra S.; Rautaray, Swarup K.
The large cardamom is one of the most important spice crops grown in Himalayan region of Sikkim, India.  The capsules of the harvested large cardamom are dried before consumption.  The paper presents the physical properties of  freshly harvested and dried large cardamom capsules.  The geometrical mean diameter, sphericity, bulk density and mean values of angle of repose of the freshly harvested large cardamom capsules were observed to be 18.53±1.73 mm, 0.76, 332.21±14.24 kg m-3 and 28.74±4.04°, respectively.  Whereas for dried large cardamom capsules the values were found to be 11.113±0.92 mm, 0.56, 393.109±9.622 kg m-3 and 29.84±2.93°, respectively.  The peak static coefficient of friction of freshly harvested large cardamom over mild steel, plywood and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Post Harvest Technology large cardamom; Spice crop; Physical properties; Mechanical properties.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2018

Modeling energy efficiency during dehydration process of cooked yam
Provedor de dados: 111
Autores: Akinoso, Rahman; Edun, Kolade.
Studies on drying have focused on developing mathematical models and kinetics of drying crops, but literature is sparse on energy and exergy analysis of cooked yam used for instant-pounded yam flour production.  This work presents the effect of drying temperature and size on energy consumption during cooked yam dehydration, a major unit operation in instant-pounded yam production.  Cooked yam with uniform surface area but different thickness (5 mm, 10 mm, 15 mm,    20 mm, 25 mm and 30 mm) were dried in a cabinet dryer at varying temperatures (60oC, 70oC and 80oC) and constant air velocity of 1.5 m s-1.  During the drying process, parameters including inside chamber temperature, outside chamber temperature, ambient temperature, drying time and power output...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Food Engineering; Agricultural Engineering; Post-Harvest Drying  Cooked yam  Energy analysis  Exergy efficiency  Instant-pounded yam flour.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2568

Influence of tyres characteristics and travelling speed on ride vibrations of a modern medium powered tractor Part II, Evaluation of the Health Risk
Provedor de dados: 111
Autores: Servadio, Pieranna; Belfiore, Nicola Pio.
In this paper, according to ISO 2631/1, 1997, the influence of the mechanical vibrations on human health is evaluated and assessed with four methods: the health guidance caution zones (HGCZ), the estimated vibration dose value (eVDV), the fourth power vibration dose value (VDV), a combination of various methods presented in literature.  The normative refers to the HGCZ, which involves the average RMS vibration emission level and its exposure time during a given working day.  Values of crest factor for the operator seat showed that Z-axis was the more solicited, even if all the crest factor values are below 9.  Results of mechanical vibration in respect of comfort and health, according with the method of the HGCZ, showed that only case B, at higher forward...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural Engineering; Tractors; Vibrations; Ergonimics whole body vibration; Tractor; Comfort; Health risk; Tyres.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2544

Development of a hot water treatment plant suitable for banana
Provedor de dados: 111
Autores: Amin, Mohammad Nurul; Hossain, Md. Mosharraf.
Banana is a year round fruit in Bangladesh.  After harvesting, banana is attacked by postharvest disease caused by some fungi.  The quality and quantity losses of banana occur due to disease attacks and lack of proper postharvest handling.  Fungus can be destroyed or made inactive by chemical or heat treatment.  Most of the chemicals are hazardous to human health.  Heat treatment technology is simple and is a non-chemical method to kill or inactivate pest and to control fungus.  A hot water treatment plant was designed and developed with local materials for treating banana fruits.  Overall dimensions of the hot water treatment plant were 1600 mm×926 mm×1566 mm and operated by an electrical motor of 0.38 kW.  Water was heated by the six electric immersion...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hot-water treatment plant; Banana; Temperature; Exposure period; Break-even point and payback period.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2658

Emissions inventory of greenhouse gases and ammonia from livestock housing and manure management
Provedor de dados: 111
Autores: Samer, Mohamed.
An emission inventory is a database on the amount of pollutants released into the atmosphere.  The anthropogenic emissions of air pollutants and greenhouse gases are detrimental to the environment and the ecosystems.  Therefore, reducing emissions is crucial. One key issue is to inventory these emissions, and consequently databases on anthropogenic emissions will be available for making decisions on implementing suitable mitigation strategies.  Such investigations aim at developing national emissions inventory for domestic livestock and to identify possible abatement techniques in order to reduce these emissions.  Therefore, the objectives of this study are to introduce and define the emissions inventories, review the emission inventory guides, introduce...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural engineering; Agricultural buildings and bioenvironmental engineering emissions inventory; Greenhouse gases; Methane; Nitrous oxide; Ammonia; Particulate matter; Livestock buildings; Manure; Emission factors; Emissions abatement techniques.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2449

Alternative fuels and their potentials for tractor engines
Provedor de dados: 111
Autores: Akande, Fatai Bukola; Oniya, Oluawatoyin Oluwole; Adgidzi, Donald.
The entire world is aware of the adverse effect of global warming as a result of depletion of the ozone layer and the greenhouse gas (GHG) effect.  This study takes a critical look on the review of already existing alternative fuels that produce less emission or no emission at all.  The advantages of the alternative fuels are highlighted and exhaustively discussed.  The types of fuel engine systems are also discussed.  The possibility of using compressed natural gas (CNG) as an alternative fuel in tractor engines and other agricultural machines is investigated in terms of power generation, fuel economic indices and engine system dynamics.  Based on the study, CNG is more economical and can be used to power tractor engine with a reduced frequency of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Keywords: alternative fuels; Compressed natural gas engine; Tractor diesel engine; Fuel-engine systems; Vehicle performance characteristics; Vehicle emission characteristics.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/1088

Indirect water demand of dairy farm buildings
Provedor de dados: 111
Autores: Kordula Doering; Leibniz-Institute for Agricultural Engineering; Simone Kraatz; Leibniz-Institute for Agricultural Engineering; Annette Prochnow; Leibniz-Institute for Agricultural Engineering; Katrin Drastig; Leibniz-Institute for Agricultural Engineering.
Water is needed in agriculture not only to ensure plant growth and to feed livestock, but also indirectly in pre-chains to produce machines, equipment, buildings and operating materials.  This water is referred to as indirect water.  The focus of this article is on the indirect water demand for farm buildings in milk production, which was assessed for the first time.  Four standardized barn types for dairy cows, a young cattle barn, a calf barn, and storage facilities were investigated.  The materials and masses of each building type and equipment were determined.  The water needed in the process of material production was taken from the Ecoinvent database.  The indirect water demand for livestock houses ranges from 1.4 to 1.9 m³ animal place-1 yr-1 and...
Palavras-chave: Agricultural Science; Dairy Science; Water Assessment indirect water  consumptive water  livestock buildings  pre-chains  Germany.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2726

Evaluation of hydraulics characteristics and management strategies of subsurface drainage system in Indira Gandhi Canal Command
Provedor de dados: 111
Autores: Rohitashw Kumar; SKUAST-K; S. R Bhakar; P. K. Singh; Department of Soil &amp; Water Engineering, CTAE, Udaipur, India.
The present study revealed the performance of subsurface drainage systems for long-term sustainability of irrigated agriculture. &amp;nbsp;The performance of subsurface drainage systems was evaluated on the basis of drain spacing equations for disposal of effluent and hydraulic characteristics of envelop materials, like entrance resistance created by envelop and hydraulic conductivity. &amp;nbsp;Three important synthetic envelopes, HG 22, SAPP 240 and CAN 2 were tested in laboratory using sand tank model and permeability apparatus to compare their performances in terms of entrance resistance and hydraulic conductivity of soil envelope system. &amp;nbsp;The hydraulic conductivity for SAPP 240 filter was found the highest and entrance resistance the lowest....
Palavras-chave: Irrigation water management subsurface drainage; Unsteady drain spacing equations; Evaluation hydraulic characteristics; Management strategies.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2402

On-site measurement of soil moisture content using an acoustic system
Provedor de dados: 111
Autores: Elham Meisami-asl; A. Sharifi; Hossein Mobli; Afshin Eyvani; Reza Alimardani.
Precision agriculture is a farming management concept based on observing and responding to intra-field variations.  One of the most important soil properties in farming is soil moisture content and it is necessary to develop new technique for measuring this property in a precision farming system.  This study investigates the measurement of moisture content in soil using an on-site, easy to use and real-time acoustic wave system.  The system consists of the propagation of acoustic waves such as sweep frequency sound wave (10-300 Hz) and multiple tone sound waves (120 Hz) through the soil.  Some properties of these acoustic waves enable estimation of soil water content such as peak amplitude (A), total power (TP), total harmonic distortion (THD) and signal...
Palavras-chave: Keywords: acoustic waves; Soil moisture content; Sound properties.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2571

Processing online crop disease warning information via sensor networks using ISA ontologies
Provedor de dados: 111
Autores: Jackman, Patrick; Gray, Alasdair J. G.; Brass, Andrew; Stevens, Robert; Shi, Ming; Scuffell, Derek; Hammersley, Simon; Grieve, Bruce.
Growing demand for food is driving the need for higher crop yields globally.  Correctly anticipating the onset of damaging crop diseases is essential to achieve this goal.  Considerable efforts have been made recently to develop early warning systems.  However, these methods lack a direct and online measurement of the spores that attack crops.  A novel disease information network has been implemented and deployed.  Spore sensors have been developed and deployed.  The measurements from these sensors are combined with similar measurements of important local weather readings to generate estimates of crop disease risk.  It is combined with other crop disease information allowing overall local disease risk assessments and forecasts to be made.  The resulting...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Investigation study assay; Sensor network; Online sensors; Data queries; Crop disease assessment; Web semantics; United Kingdom.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2369

Growth, yield and nutrient uptake of guava (Psidium Guavaja L.) affected by soil matric potential, fertigation and mulching under drip irrigation
Provedor de dados: 111
Autores: Khan, Junaid Nazir; Jain, Aanchal Kumar; Sharda, Rakesh; Singh, Navprem; Gill, Parampal Singh; Kaur, Sumanjeet.
Our objective was to examine the effect of plastic mulching, three soil matric potentials (SMP) treatments    {I1(-20 kPa), I2(-40 kPa), and I3(-60 kPa)} and three fertigation levels {F1(100%), F2(80%), and F3(60%) recommended dose of fertilizer} under drip irrigation conditions for nutrient uptake, growth parameters and yield in guava plants.  The experiments were set up in factorial randomized block design with eighteen treatment combinations.  The experiments were conducted during the year 2012-13.  The investigation indicated that the plant canopy spread in (N/S and E/W) directions was greatly affected by different treatments.  However, non-significant effects of interaction parameters were found on plant height, crop volume and plant girth.  The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Water Management; Irrigation and Drainage Engineering; Soil and Water Engineering Psidium Guavaja L.  Soil matric potential  Mulching  Fertigation  Nutrients.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2480

Emissions inventory of greenhouse gases and ammonia from livestock housing and manure management
Provedor de dados: 111
Autores: Mohamed Samer; Cairo University, Faculty of Agriculture, Department of Agricultural Engineering.
An emission inventory is a database on the amount of pollutants released into the atmosphere.  The anthropogenic emissions of air pollutants and greenhouse gases are detrimental to the environment and the ecosystems.  Therefore, reducing emissions is crucial. One key issue is to inventory these emissions, and consequently databases on anthropogenic emissions will be available for making decisions on implementing suitable mitigation strategies.  Such investigations aim at developing national emissions inventory for domestic livestock and to identify possible abatement techniques in order to reduce these emissions.  Therefore, the objectives of this study are to introduce and define the emissions inventories, review the emission inventory guides, introduce...
Palavras-chave: Agricultural engineering; Agricultural buildings and bioenvironmental engineering emissions inventory; Greenhouse gases; Methane; Nitrous oxide; Ammonia; Particulate matter; Livestock buildings; Manure; Emission factors; Emissions abatement techniques.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2449

Effect of different tillage and residue management practices on growth and yield of corn cultivation in Thailand
Provedor de dados: 111
Autores: Sornpoon, Wlaiwan; Jayasuriya, Hemantha P. W.
The tillage and residue management during soil bed preparation need to be in appropriate manner for sustainable farming practice.  The effects of tillage and residue management methods on corn cropping were studied on loamy soil in Bangrakum district, Phitsanulok Province, Thailand.  The effects of five commonly used tillage methods: subsoiler tillage (ST), three methods of conventional tillage (CT1, CT2 and CT3), no-tillage (NT), as main factors and two corn residue management methods; burned (R1) and unburned (R2), as sub-factors were studied in a randomized strip plot configuration.  Tillage treatment showed significant effect on physical and chemical soil properties, plant growth and development, grain yield, total aboveground biomass and most...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural Engineering; Tillage optimization Tillage; No-tillage; Emergence; Compaction; Subsoiler; Biomass.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2235

Exploring the best model for sorting Blood orange using ANFIS method
Provedor de dados: 111
Autores: Sabzi, Sajad; Javadikia, Payam; Rabbani, Hekmat; Adelkhani, Ali; Naderloo, Leila.
OranOrange has abundant nutritional properties and is consumed worldwide.  Sorting oranges of different masses based on their physical traits could help reduce packaging and transportation cost.  The ‘Blood’ cultivar of Iranian oranges from Kermanshah province  of Iran (7.03 °E 4.22 °N) was used in this study.  100 samples were randomly selected.  During the two-day experiment, all measurements were carried out inside the laboratory at mean temperature of 24°C.  In this study, some physical properties of ‘Blood’ orange were measured, such as length, width, thickness, volume, mass, mean value of geometric diameter, sphericity and projected area.  ANFIS and linear regression models were employed to predict the mass based on sphericity and mean of projected...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Linear regression; Orange; Packaging; Physical properties; Sorting.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2348

Development and evaluation of nitrogen (liquid Urea) applicator for straw mulched no-till wheat
Provedor de dados: 111
Autores: Dixit, Jagvir Singh; Mahal, Jaskarn Singh; Manes, Gursahib Singh; Singh, Manjeet.
The broadcasting of urea under high straw no-till farming often exhibit suppressed yields because of lesser nitrogen availability due to slower soil mineralization and greater N immobilization, de-nitrification and ammonia volatilization.  Prior to development of nitrogen (liquid urea) applicator, appropriate machines were not available for application of urea into the soil surface in a directly sown high straw mulched wheat crop.  To solve the problems of urea application in high straw no-till farming, self-propelled nitrogen (liquid urea) applicator was developed and evaluated under actual field conditions.  Average field capacity and efficiency of the applicator were found to be 0.33 ha/h and 80.49%, respectively.  Total plant N uptake at maturity was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural Engineering; Farm Power Machinery Nitrogen (liquid urea) applicator  broadcasting  straw load  field capacity  nitrogen uptake  yield.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2646

Effect of salt solution on the mycelial growth of orange fruit spoilage fungi in passive evaporative cooling structures
Provedor de dados: 111
Autores: Olushola, Sunmonu Musliu; Ogbonnaya, Chukwu; Delebo, Osunde Zinash; Albert, Alabadan Babatope.
A study was carried out on the effect of salt solution on mycelial growth of fruit spoilage fungi in passive evaporative cooling structures.  Three sets of four different types of passive evaporative cooling structures made of two different materials, clay and aluminium were constructed.  One set consists of four separate cooling chambers.  Two cooling chambers were made with aluminium container (cylindrical and square shapes) and the other two were made of clay container (cylindrical and square).  These four containers were separately inserted inside a bigger clay pot inter- spaced with clay soil of 5 cm (to form tin-in-pot, pot-in-pot, tin-in-wall and wall-in wall) with the outside structure wrapped with jute sack.  The other two sets followed the same...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural Engineering/Food Engineering; Postharvest Technology Fungi  sodium chloride. solution  oranges mycelial and soil.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2370

Investigating the effect of different loading densities on selected properties of dried coffee using a GHE dryer
Provedor de dados: 111
Autores: Menya, Emmanuel; Komakech, A. J.
Despite coffee being one of the leading cash crops in Uganda contributing 20%-30% of the total export earnings, it is mainly dried on bare earth surfaces hence its drastic decline in quality.  A possible alternative solution is utilization of the greenhouse effect (GHE) solar dryer.  This research was aimed at investigating the effect of different loading densities on selected properties of dried coffee using a GHE dryer that was designed and constructed at Makerere University Agricultural Research Institute Kabanyolo (MUARIK).  The research involved determining the drying time for the loading densities of 5, 10 and 20 kg m-2 as well as analyzing the coffee quality at the end of the drying period.  Three experimental runs were set up in the months of June...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Post harvest technologies  solar drying greenhouse effect; Solar dryer; Loading densities; Coffee quality; Drying time; Performance; Uganda.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2270

Development and evaluation of metal rolling machine for small-scale manufacturers
Provedor de dados: 111
Autores: Bello, Segun Raphael.
 The global drive toward intermediate technology and sustainable development motivated the development of sheet metal rolling machines for small-scale artisanal manufacturers.  This paper presents the design, construction and evaluation of a sheet metal rolling machine for small-scale enterprises.  The machine consists of three rollers; a rigid forming roller, a free floating roller and a drive roller arranged triangularly with two handles for shape-rolling.  The rollers were made of galvanized metal pipe, 1,050 mm long, 76 mm diameter, each approximately, 3 mm thickness; a driving shaft 1,220 mm long, 16.6 mm diameter and 4 pieces of mild steel washers to provide support to shaft and also to limit the bending stress on the rollers.  The entire system is...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural Engineering; Wood products.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/1759

A wireless sensor network for vineyard management in Sicily (Italy)
Provedor de dados: 111
Autores: Catania, Pietro; Vallone, Mariangela; Lo Re, Giuseppe; Ortolani, Marco.
Wine quality depends on many factors, such as the choice of variety, stock, training system, pruning as well as environmental parameters and cultivation techniques performed in the vineyard.  Monitoring the micro-climate of grapevine allows to conveniently perform the most important cultivation techniques (soil management, pesticide treatments, green pruning, harvest) thus reducing the operating costs of the vineyard, and increasing the overall quality of the grapes.  The aim of the present study is to monitor the micro-climate of grapevine in order to control spring period hazards, to reduce the operating costs of the vineyard and to increase the quality of grapes.  For this purpose a Wireless Sensor Network was used, and a comparison was performed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural mechanization; Management vineyard  temperature  relative humidity  Wireless Sensor Network (WSN).
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2615

Modeling for predicting soil wetting radius under point source surface trickle irrigation
Provedor de dados: 111
Autores: Subbauah, Rangavajhala; Mashru, Harshad Hemrajbhai.
Irrigation practices that are profligate in their use of water have come under closer scrutiny by water managers and the public.  Trickle irrigation has the propensity to increase water use efficiency only if the system is designed to meet the soil and plant conditions.  Information on moisture distribution patterns under point source trickle emitters is a pre-requisite for the design and operation of trickle irrigation systems.  This will ensure precise placement of water and fertilizer in the active root zone.  For many practical situations, detailed information on matric potential or water content distribution within the wetted volume is not necessary and prediction of the boundaries and shape of the wetted soil volume suffice.  Simple models are more...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Trickle irrigation; Wetted radius; Simple heuristic model.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/1829

Translational vibration evaluation of tractor seats for ride comfort
Provedor de dados: 111
Autores: Nupur, Yatih; V. K., Tewari; R., Thangamalar; Kumari, Sweeti; Kumar, Ashok.
An investigation was carried out on tractor seat design for better operator comfort during operation. The project objectives were mainly aimed to increase the ride comfort by improving the seat suspension which is used in Indian tractors. Tests were conducted for haulage operation and also for field operation. During haulage operation tests were carried out onexisting seats used in Indian tractors with three new selected suspension systems of the two most selling models of MF 241 and MF 1035. The model MF 241 equipped with a existing seat is mostly used in India, while the model MF 1035 consists of exported benchmark seat (for comparison) which is a seat whose suspension appeared to majority of operators is used for more comfortable and rest three selected...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Seat suspension; Weighted R.M.S acceleration; Spring constant.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2509

Microwave thermal shocking assisted pistachios splitting mouth
Provedor de dados: 111
Autores: Kouchakzadeh, Ahmad.
The aim of this study was to evaluate the effect of microwave thermal shocking on cracking pistachio’s mouth.  A hundred closed nuts were soaked in water for 5 to 24 hours at different temperatures from 0ºC to 25ºC and then shocked thermally for creaking by microwave irradiation.  Results showed that in 540W power and higher all 100 pistachios were split.  The cracking started after 6 min and all 100 pistachios were split after 16 min microwave irradiation in 540, 720 and 900 W if the nuts were soaked for 5 hours in 25ºC water before.   Keywords: microwave thermal shocking, splitting mouth, pistachios
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microwave thermal shocking; Splitting mouth; Pistachios.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2599

Coefficients of repair and maintenance costs of self-propelled combine harvesters in Italy
Provedor de dados: 111
Autores: Calcante, Aldo; Fontanini, Luca; Mazzetto, Fabrizio.
Purchasing and maintaining agricultural machines are two of the most considerable costs of the agricultural sector, which includes farm equipment manufacturers, farm contractors and farms.  In this context, repair and maintenance costs (R&amp;M costs) generally constitute 10%-15% of the total costs related to agricultural equipment and tend to increase with the age of the equipment; hence, an important consideration in farm management is the optimal time for equipment replacement.  R&amp;M cost estimation models, calculated as a function of accumulated working hours, are usually developed by ASAE/ASABE for the agricultural situation in the United States, which is considerably different than agricultural context of other countries.  So, the goal of this...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural Engineering; Agricultural mechanization Repair and maintenance costs; Self propelled combine harvesters; Cost estimation models.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2512

Grader: A review of different methods of grading for fruits and vegetables
Provedor de dados: 111
Autores: Londhe, Dattatraya Hiraman; Nalawade, Sachin Madhukar; Pawar, Ganesh Shyamrao; Atkari, Vinod Tukaram; Wandkar, Sachin Vilas.
Grading of agricultural produce especially the fruits and vegetables has become a perquisite of trading across borders.  In India mostly fruit growers grade the fruit manually.  Manual grading was carried out by trained operators who considered a number of grading factors and fruit were separated according to their physical quality.  Manually grading was costly and grading operation was affected due to shortage of labor in peak seasons.  Human operations may be inconsistent, less efficient and time consuming.  New trends in marketing as specified by World Trade Organization (WTO) demand high quality graded products.  Farmers are looking forward to having an appropriate agricultural produce-grading machine in order to alleviate the labor shortage, save time...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Farm Machinery and Power Engineering Grading; Prerequisite; Kernels; Color sensor; India.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2520

Application of nonparametric method to improve energy productivity and CO2 emission for barley production in Iran
Provedor de dados: 111
Autores: Ghasemi Mobtaker, Hassan; Taki, Morteza; Salehi, Marzie; Zarei Shahamat, Ebrahim.
The nonparametric method of data envelopment analysis (DEA) was used to investigate the energy efficiency and CO2 emission of barley farm in Hamedan province of Iran.  The method was used based on eight energy inputs including human labor, machinery, diesel fuel, fertilizers, farmyard manure, biocide, electricity and seed energy and single output of barley yield and technical, pure technical, scale and cross efficiencies were calculated using CCR and BCC models.  The results showed that the average values of technical, pure technical and scale efficiency scores of farmers were 0.788, 0.941 and 0.833, respectively.  Also, energy saving target ratio for barley production was calculated as 11.45%, indicating that by following the recommendations of this...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Data envelopment analysis; Energy saving; Barley; Chemical fertilizers.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2618

Determination of agricultural soil compaction affected by tractor passing using 3D finite element
Provedor de dados: 111
Autores: Nasiri, Meghdad; Soltani, Mahmoud; Motlagh, As'ad Modarres.
Recently, soil compaction is one of the main problems of farmers and the main parameters of efficiency reduction of crops in some areas due to increasing in weight and size of agricultural tractors and passing of them in the field.  In this research, for determining of soil compaction after tractor passing, the numerical and empirical methods were used.  In empirical method, a Massy Ferguson tractor with a 3 moldboard mounted plough was used.  The experiment was carried out in the university of Urmia farmland.  The soil’s physical properties were measured in three portions, front of wheels before transmission, after transmission frontal wheel and after transmission hinder wheel in depth of 0 - 5, 5 -10 and 10-15 cm respectively.  The resistance of soil was...
Tipo: Info:eu-repo/semantics/article
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2433

Edge effect compensation for citrus canker lesion detection due to light source variation – a hyperspectral imaging application
Provedor de dados: 111
Autores: Niphadkar, Nikhil P.; Burks, Thomas F.; Qin, Jianwei; Ritenour, Mark.
The spread of citrus canker has become one of the most important challenges faced by Florida Fresh Market citrus is affecting the export of citrus fruits to several international markets including European countries.  Previous studies have shown that automated detection systems can help detect citrus canker infected fruit and could assist in eliminating the detected fruit from shipment to closed markets.  Most automated detection systems use some form of machine vision with artificial light sources.  However, when capturing images of spherical objects, non-uniform illumination results in an edge blackening effect resulting in higher misclassification rate.  The basic objective of this research was to implement a compensation algorithm to eliminate the edge...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Edge effect compensation; Hyperspectral imaging; Canker; Spatial correction; Geometric correction.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2278

Assessment of the CERES-Rice model for rice production in Ibadan, Nigeria
Provedor de dados: 111
Autores: Christopher Oluwakunmi Akinbile; FUTA.
CERES-Rice model was used to simulate growth and yield of a new rice variety in Nigeria with the attention on rates of water application, one major factor that retards crop’s grain yield. The rates were full irrigation (100%ET), medium (75% ET), average (50% ET) and low (25% ET) irrigation intervals. The NEw RIce for AfriCA (acronym for NERICA) 2 variety was grown at the International Institute for Tropical Agriculture (IITA), Ibadan, Nigeria. Experimental agronomic values of parameters such as plant height, root depth, canopy shading, Leaf area index (LAI), biomass and grain yield in relation to water use were obtained and compared with simulated modelled values from CERES and the results were subjected to statistical analysis. The model predicted...
Palavras-chave: Agricultural Engineering; Soil and Water Conservation Engineering Rice; Model; Water; Simulation; Production; Food security.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2405

An inexpensive open-source ultrasonic sensing system for  monitoring liquid levels
Provedor de dados: 111
Autores: Fisher, Daniel K.; Sui, Ruixiu.
 Liquid levels are measured in a variety of agricultural applications, and are often measured manually, which can be time-consuming and labor-intensive.  Rapid advances in electronic technologies have made a variety of inexpensive sensing, monitoring, and control capabilities available.  A monitoring system was developed and evaluated for automatic measurement of liquid levels, and demonstrated by monitoring water levels in evaporation pans used in evaporation studies and irrigation scheduling.  The system is composed of an ultrasonic sensor, a microcontroller-based data logger, and a temperature sensor.  The ultrasonic sensor measures the distance from the sensor to the liquid surface.  Air temperature is measured by the temperature sensor, and is used to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Edge effect compensation; Hyperspectral imaging; Canker; Spatial correction; Geometric correction.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2343

Vibration analysis influence during crisis transport of the quality of fresh fruit on food security
Provedor de dados: 111
Autores: Amer Eissa, Ayman Hafiz; Albaloushi, Nabil S.; Azam, Mostafa M.
Mechanical damage of agriculture produce is a major problem in the harvest and post-harvest chain.  This damage could cause huge economic loss.  In addition, it could lead to serious food safety concerns.  Several cases of foodborne illness have been traced to poor or unsanitary postharvest practices.  Escherichia coli (E. coli) O157:H7, Salmonella, Shigella, Listeria, Cryptosporidium, Hepatitis, and Cyclospora are among the diseases and disease-causing organisms that have been associated with fresh fruits and vegetables.  Measurements of mechanical characteristics of agricultural products under different static and dynamic loads should help in predicting the type and magnitude of mechanical injuries which will help in minimizing losses and improve the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural Systems Engineering Vibration Analysis; Crisis Transport; Quality; Damage and Food safety.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2393

Determination of physical properties of apricot fruit and  proper box height for storing and handling the apricot fruit
Provedor de dados: 111
Autores: Hazbavi, Isa.
In avoiding damage to fruit species, the permissible falling height and permissible static pressure are of great importance.  The former is important in planning harvesting and handling operations, the latter in selecting the height of transport containers.  Fruits are generally transported in containers.  The static and dynamic forces which then act on the fruit will cause damage if they exceed given value.  The static force may be calculated from the weight of the fruit column being transported while the dynamic load is a consequence of vibration caused by transport.  The permitted static load for a given fruit may be determined experimentally.  The aim of this study was design of a suitable height based on the measured properties using Ross and Isaacs’s...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Apricot fruit; Static force; Height box; Physical properties.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2669

Rapidly drying sorghum biomass for potential biofuel production
Provedor de dados: 111
Autores: A.C. Rocateli; Dept. of Plant and Soil Science, Texas Tech University, Texas 79409 USA; R.L. Raper; Field and Research Services Unit, Oklahoma State University, Oklahoma, 74078 USA; B. Olander; Hesston AGCO, Hesston, Kansas, 67062 USA; M. Pruitt; Hesston AGCO, Hesston, Kansas, 67062 USA; E.B. Schwab; USDA-NRCS, Auburn, Alabama, 36830 USA.
The Southern U.S. has an ideal climate that may aid in growing large amounts of biomass suitable for biofuel; however, droughts during the growing season may reduce yields.  Sorghum (Sorghum bicolor L.) may have great potential as an energy crop, because it is capable of high biomass yields and is drought tolerant. However, sorghum biomass has relatively high moisture content and should be conditioned and dried before transported to reduce costs.  Sorghum-sudan hybrid was harvested with two different headers on a self-propelled windrower:  a Massey Ferguson 9145 (sickle) and a Massey Ferguson 9185 (disc).  The disc header was comprised of two pairs (rear front) of metal conditioner rollers which compressed the biomass, thus improving the drying process....
Palavras-chave: Agricultural engineering Moisture; Conditioning; Baling; Windrowers.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2058

Evaluation of yield monitoring system installed on indigenous grain combine harvester for rice crop
Provedor de dados: 111
Autores: Singh, Manjeet; Kumar, Rajneesh; Sharma, Ankit; Mishra, P. K.; Sharma, Karun.
Precision agriculture is a methodology to identify and exploit variability within an agricultural field.  In India, a yield is measured during marketing of harvested crop and as a gross yield of the land owned by the farmer.  The yield monitor mounted over grain combine harvester measures and records information such as grain flow, grain moisture, area covered and location.  An automated yield monitoring system consisting of a yield sensor, global positioning system (GPS), field computer with custom software was mounted on a self propelled indigenous grain combine harvester for real-time crop yield mapping along with moisture data.  By means of optical sensors (light emitter and detector), the height of the grain on the elevator paddles was measured and...
Tipo: Info:eu-repo/semantics/article
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2556

Indirect water demand of dairy farm buildings
Provedor de dados: 111
Autores: Doering, Kordula; Kraatz, Simone; Prochnow, Annette; Drastig, Katrin.
Water is needed in agriculture not only to ensure plant growth and to feed livestock, but also indirectly in pre-chains to produce machines, equipment, buildings and operating materials.  This water is referred to as indirect water.  The focus of this article is on the indirect water demand for farm buildings in milk production, which was assessed for the first time.  Four standardized barn types for dairy cows, a young cattle barn, a calf barn, and storage facilities were investigated.  The materials and masses of each building type and equipment were determined.  The water needed in the process of material production was taken from the Ecoinvent database.  The indirect water demand for livestock houses ranges from 1.4 to 1.9 m³ animal place-1 yr-1 and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural Science; Dairy Science; Water Assessment indirect water  consumptive water  livestock buildings  pre-chains  Germany.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2726

Comparison of five commonly used thin-layer moisture transfer models in fitting the re-wetting data of barley
Provedor de dados: 111
Autores: Basunia, Mohammad Ali.
Five commonly cited thin-layer rewetting models, including Page, Diffusion, Approximate form of diffusion, Exponential, and Polynomial were compared for their abilities to the fit the experimental re-wetting data of barley based on the root mean square error (RMSE) and mean relative error (MRE) of estimate of the measured and simulated moisture contents.  The comparison shows the Page model is the most suitable model (average, RMSE = 0.176% d.b. and MRE = 0.713% d.b.) followed by the Diffusion model (average RMSE = 0.199% d.b. and MRE = 0.862% d.b) to fit the re-wetting experimental data of barley.  The Approximate form of diffusion, the Exponential and the Polynomial models have less fitting ability then the Page and Diffusion models for the entire period...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural Engineering; Post harvest technology Thin-layer; Barley; Re-wetting parameters; Temperature; Relative humidity.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2539

Prediction of tractive force model for disc harrowing using sensitivity analysis
Provedor de dados: 111
Autores: Nkakini, Silas Ovua; Douglas, I. E.
In this study, a comparative evaluation of tractive force models for disc harrowing, at different tillage speeds was carried out in order to determine optimal tillage speeds.  The predictive models were developed using dimensional analysis.  The tillage operation in a loamy sand soil, at tillage speeds of 1.94 m s-1, 2.22 m s-1 and 2.5 m s-1 respectively was conducted, using trace tractor techniques.  Parameters such as drawbar pull, rolling resistance, wheel slip, moisture content, cone index, wheel numeric, contact pressure, speed, width of harrow, depth of harrow, and tractive force were measured.  The developed mathematical models describing the tractors tyre-soil interactions parameters were evaluated using sensitivity analysis of the measured...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Predictive; Tractive force; Disc harrowing; Tillage; Loamy; Sand; Soil; Modelling; Sensitivity measurement; Soil   moisture.
Ano: 2013
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2374

Detection and characterization of a Cucumber mosaic virus isolate infecting peperina, a species native to Argentina
Provedor de dados: 114
Autores: Rodríguez Pardina,P; Ojeda,M; Biderbost,E; Di Feo,L.
Minthostachys mollis (Kunth.) Griseb., "peperina", un miembro de la familia Lamiaceae, es una especie aromática que se emplea en la farmacología moderna y en medicina. Está ampliamente distribuida en los Andes, desde Venezuela y Colombia hasta Argentina. En el último país, la principal área de explotación de peperina incluye el área serrana de la provincia de Córdoba, donde la especie es arrancada indiscriminadamente, lo que conlleva una pérdida irreversible de germoplasma. A los fines de preservar este recurso nativo y fuente regional de ingresos, la especie está siendo domesticada. Durante este proceso, se observó la aparición de síntomas de un conspicuo mosaico amarillo, típico de infección viral. Análisis biológicos, serológicos y moleculares (RT-PCR,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cucumovirus; Mynthostachys mollis; Secuencia producto de RT-PCR.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1668-298X2013000200004

La fracción evaporativa en diferentes regiones agrícolas y naturales del centro-noroeste de la Argentina
Provedor de dados: 114
Autores: Luna Toledo,E.S; Figuerola,P.I; Abril,E.G; Ravelo,A.C.
La fracción evaporativa (FE) permite cuantificar la porción de la energía disponible usada en el proceso de evapotranspiración. Se obtuvo la distribución espacial de la FE para cinco tipos de cobertura: árboles, cultivos, pastizales, arbustos y suelo desnudo de cinco ecorregiones del centro-noroeste de la Argentina, usando productos del sensor MODIS-TERRA. FE se calculó mediante el método triangular según la relación entre la fracción de la cobertura de suelo (Fr) y la temperatura de superficie (Ts). Ambas variables fueron correlacionadas para cada tipo de cobertura por ecorregión. Fr y Ts están inversamente asociadas, y diferentes coberturas por ecorregiones mostraron cambios en la pendiente de la recta entre ambas variables debido a cambios en el...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fracción evaporativa; Ecorregiones; MODIS; Heterogeneidad.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1668-298X2013000100002

Variación espacio-temporal de los diferentes estados de desarrollo de mosquitas blancas Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) en cultivos de soja
Provedor de dados: 114
Autores: Cavallo,M.J; Bruno,M.A; Irastorza,R; Grilli,M.P.
La soja es actualmente el cultivo más importante en la Argentina; a sus plagas tradicionales se ha sumado la mosca blanca, Bernisia tabaci. Los objetivos de este trabajo fueron establecer la distribución espacial de los diferentes estados de desarrollo (huevos, ninfas, pupas y adultos) de B. tabaci en lotes de soja del área central de la provincia de Córdoba (Argentina) y determinar la variación temporal de la abundancia de esos estados en dicha área. Se trabajó con muestras de lotes de dos localidades, Colonia Tirolesa y Colonia Caroya (Dpto. Colón). La comparación de abundancia entre localidades mostró variaciones entre ellas pero sólo se detectaron diferencias significativas entre adultos. Al comparar la variación de las abundancias entre fechas, sólo...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bemisia tabaci; Soja; Abundancia; Córdoba.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1668-298X2013000200005

Compost de guano de gallina en la composición de sustratos para la producción de plantines florales
Provedor de dados: 114
Autores: Barbaro,L.A; Karlanian,M.A; Rizzo,P.F; Riera,N.I; Della Torre,V; Beltrán,M; Crespo,D.E.
Se evaluaron sustratos formulados con distintas proporciones (20, 50 y 80%) de tres tipos de compost de guano de gallina (CGG1, CGG2, CGG3) mezclados con compost de corteza de pino y un sustrato comercial. Los diez tratamientos fueron usados para el cultivo de plantines de Impatiens walleriana y Salviasplendens. Se caracterizó física y químicamente cada sustrato, y sobre los plantines se evaluó sobrevivencia, masa seca y calcio, magnesio, potasio y sodio en la hoja. Los sustratos con 20% y 50% de los tres CGG tuvieron la mayor capacidad de retención de agua, y con 80%, la mayor porosidad de aire. Los sustratos con 50% y 80% presentaron los más altos valores de pH (&amp;#8805;6,6), potasio y sodio. Para las mismas proporciones, CGG2 y CGG3 presentaron...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sustrato; Compost de guano de gallina; Plantines florales.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1668-298X2013000100003

Fertilización nitrogenada en trigo para la producción de forraje y grano en el sudoeste de la provincia de Buenos Aires (Argentina)
Provedor de dados: 114
Autores: Arzadun,M; Laborde,H; Arroquy,J.
Cuando del cultivo de trigo (Triticum aestivum) se obtiene forraje y grano, i.e. cultivo doble propósito (DP), la disponibilidad de nitrógeno puede ser un aspecto clave para la expansión de esta alternativa. Se comparó la respuesta al N en trigo DP fertilizado en abril (DPF), en agosto (DPG), en ambas fechas (DPFG) y en el cultivo para grano (TC) en un experimento factorial con las dosis de N: 0, 40, 80, 120, y 160 kg ha-1, aplicado como urea al voleo. Se determinó el rendimiento de forraje y de grano y el contenido de N en cada producto. El rendimiento de forraje se incrementó en promedio en 10,3 kg MS kg-1 de N aplicado, hasta la dosis de 120 kg ha-1. El rendimiento de grano fue menor en los DP, pero tuvo una mayor respuesta a N, incrementándose en 8,3,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nitrógeno; Trigo; Forraje; Grano; Eficiencia de respuesta.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1668-298X2013000100001

Análisis económico de sistemas productivos ovinos de Córdoba, Argentina: Estudio de casos
Provedor de dados: 114
Autores: Freire,V; Agüero,D; Ponce Crivellaro,M; Vigliocco,M; Sandoval,G.
En un contexto de gran heterogeneidad organizativa y de recursos se estimaron los resultados económicos de la producción ovina de Córdoba, Argentina, con el propósito de generar referencias para la toma de decisiones relacionadas con el desarrollo del sector. Mediante estudio de casos se recogió información en seis agro-regiones, a través de encuestas semiestructuradas y entrevistas en profundidad. La venta de cordero fue el rubro de mayor participación entre los ingresos (83% de los casos); mano de obra (41%) y suplementos (17%), los principales componentes en el promedio de costos totales. La actividad ovina logró márgenes brutos positivos en pequeños y medianos establecimientos serranos y de llanura, extensivos y semi-intensivos, especializados o...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Resultados económicos; Eficiencia económica; Estrategias productivas; Regiones agroeconómicas homogéneas.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1668-298X2013000100004

Efectos del asperjado con reguladores de crecimiento y del despunte, sobre la calidad de plantas de Verbena bonariensis cultivadas en maceta
Provedor de dados: 114
Autores: Papone,M.L; Fatta,N.
Verbena bonariensis es una especie autóctona que por la persistencia de la inflorescencia sería apta como planta de flor para maceta. Con el objetivo de lograr plantas bajas y de buena arquitectura, se probaron los reguladores de crecimiento (BAP-citoquinina y cycocel) y el corte de los ápices o pinzado. Durante el ensayo se midió la longitud del tallo principal, se contó el número de días a floración (DAF), de nudos, de ramificaciones surgidas de la base y de ramificaciones totales. También se contó el número de inflorescencias totales surgidas de brotes axilares y de yemas brotadas en el tallo principal. Cada planta se consideró una repetición y se contó con 10 repeticiones para cada tratamiento. En las plantas pinzadas, DAF y el número de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citoquinina; Cycocel; Reguladores de crecimiento; Pinzado; Control de altura.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1668-298X2013000200006

Relación entre los indicadores de disponibilidad de fósforo y la respuesta de los cultivos de trigo, maíz y soja a la inoculación con Penicillium bilaii
Provedor de dados: 114
Autores: Silva Rossi,M.M; del C. Rollán,A.A; Bachmeier,O.A.
Se evaluó la relación entre los indicadores de disponibilidad de fósforo y la respuesta de los cultivos de trigo, maíz y soja a la inoculación con Penicillium bilaii. Se trabajó en distintos Molisoles con un diseño en bloques con parcelas completamente aleatorizadas y tres repeticiones para uno de los tratamientos: semillas inoculadas con P. bilaii y testigo sin inocular. Las parcelas de trigo y maíz se fertilizaron con dosis entre 8 y 16 kg P ha-1. Para cada tipo de suelo se estimó la energía de retención de fósforo (k de Langmuir), la capacidad buffer máxima (MBC), el diferencial de capacidad buffer (DCB), el índice de adsorción de fósforo (P-SI) y el índice de disponibilidad fosfórica (F-Index). Se evaluó la respuesta relativa en términos porcentuales...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Solubilización de P; Absorción; Inoculación; Respuesta del cultivo.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1668-298X2013000200001

Fitotoxicidad de herbicidas postemergentes sobre Adesmia bicolor (Poir.) DC y control de malezas asociadas
Provedor de dados: 114
Autores: Autrán,V.A; Puricelli,E.C; Andrés,J.A.
Un mejor conocimiento del manejo de las especies nativas de leguminosas forrajeras como Adesmia bicolor puede ayudar a lograr una mayor calidad y estabilidad en la producción de los pastizales. No existe información disponible en la Argentina sobre el tipo y dosis de herbicidas adecuados para el control de malezas en A. bicolor. Los objetivos fueron evaluar el efecto fitotóxico de herbicidas postemergentes a diferentes dosis sobre A. bicolor y el control de las malezas latifoliadas que crecen asociadas en ensayos a campo durante 2009 y 2010. El diseño fue de parcelas divididas donde la parcela mayor fue el tipo de herbicida (2,4-DB e imazetapir) y la parcela menor la dosis (1/4X, 1/2X, 1X, 2X, 4X, 8X, siendo X = 250 g i.a. ha-1 para 2,4-DB y X=100 g i.a....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Malezas latifoliadas Imazetapir 2; 4-DB.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1668-298X2013000200002

Comparación de dos métodos de obtención de índices para la estimación del riesgo de lixiviación de plaguicidas en dos perfiles de suelo
Provedor de dados: 114
Autores: Bedmar,F; Costa,J.L; Gimenez,D; Daniel,P.
La determinación de los parámetros de adsorción y disipación de plaguicidas en el suelo permite un mejor pronóstico de los procesos y del potencial de contaminación del agua subterránea. El objetivo fue comparar dos métodos de cálculo de los índices factor de retardo y de atenuación log-transformado (AFT), a fin de estimar el riesgo de lixiviación potencial de los herbicidas atrazina, acetoclor y s-metolacloro en los horizontes A, B, C y en todo el perfil de dos suelos de la provincia de Buenos Aires (Argentina). Se elaboraron los índices a partir de los parámetros de adsorción y persistencia de los herbicidas obtenidos mediante experimentos con enfoque multicapa, respecto de cálculos mediante bases de datos con enfoque monocapa. Se determinó el índice de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Herbicidas; Agua subterránea; Factor de retardo; Factor de atenuación; Lixiviación potencial.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1668-298X2013000200003

A dominant height growth and site index model for Pinus pseudostrobus Lindl. in northeastern Mexico
Provedor de dados: 115
Autores: Vargas-Larreta,Benedicto; Aguirre-Calderón,Oscar A.; Corral-Rivas,José J.; Crecente-Campo,Felipe; Diéguez-Aranda,Ulises.
Foresters in northeastern Mexico currently use height growth curves developed 20 years ago to estimate the dominant height and productivity of Pinus pseudostrobus Lindl. The development of new curves could improve the ability to predict heights and would allow increasingly precise yield projections for this species. Data from stem analysis of 72 P. pseudostrobus dominant trees growing in natural stands in Nuevo Leon, Tamaulipas and Coahuila (northeastern Mexico), were used to evaluate several dynamic site equations derived with the Generalized Algebraic Difference Approach (GADA). All the equations directly estimate dominant height and site index from any dominant height and age. The fittings were carried out using the base-age-invariant nested iterative...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Site quality; Height-age relationship; Generalized algebraic difference approach; Base-age dynamic equation; Autocorrelation.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000100008

Variation in insect pest and virus resistance among habanero peppers (Capsicum chinense Jacq.) in Yucatán, México
Provedor de dados: 115
Autores: Berny-Mier y Teran,Jorge C.; Abdala-Roberts,Luis; Durán-Yáñez,Antonio; Tut-Pech,Felipe.
The evaluation of crop genetic variation for herbivore resistance is a relevant tool that can provide information about plant breeding strategies and biological control. The objective of this study was to provide a field-based assessment of pest resistance in five lines of habenero pepper (Capsicum chinense Jacq.). Weekly surveys were conducted at an experimental site in Mocochá (Yucatán, México) from July 2010 to December 2010, including incidence of Bemisiatabaci nymphs and Liriomyza trifolii leafmines, fruit infestation by the pepper weevil (Anthonomus eugenii), and the presence and severity of symptoms of viral infection. The experimental design was completely randomized with five 5X5 m replicate plots, each containing an equal number of plants of each...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Capsicum chinense; Plant resistance; Plant genetic variation.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000500005

Stable and efficient Agrobacterium tumefaciens mediated transformation of Phaseolus vulgaris
Provedor de dados: 115
Autores: Espinosa-Huerta,Elsa; Quintero-Jiménez,Anareli; Cabrera-Becerra,K. Virginia; Mora-Avilés,M. Alejandra.
Common bean breeding requires novel techniques to incorporate genes that may not be available in bean genetic diversity. The objective of the present study was to analyze the main variables involved in Agrobacterium tumefaciens-mediated transformation of common bean towards providing an efficient system to introduce new agronomic traits. Bean cultivars Flor de Mayo Anita and Pinto Saltillo were inoculated with different A. tumefaciens strains, constructs and selection was done using two selection agents (kanamycin ot glufosinateammonium herbicide). Five-day old hypocotyls regenerated organogenic buds (cell clusters) 5 d after inoculation. A randomized complete blocks experimental design was used and the experimental unit was a petri dish with at least 10...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bud clusters; Drought stress tolerance; Fungal resistance; Gamborg medium; Hypocotyls; Organogenesis.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000400002

El precio mínimo al productor primario de leche para reducir las importaciones de lácteos en México
Provedor de dados: 115
Autores: Brambila-Paz,J. Jesús; Mora-Flores,Saturnino; Rojas-Rojas,M. Magdalena; Pérez-Cerecedo,Verónica.
Los países que han aumentado su producción de leche sobre el crecimiento promedio es porque han pagado al productor de leche un precio mínimo de largo plazo, que está sobre el del mercado, fomentando así la integración horizontal y vertical de productores. El objetivo de este estudio fue determinar el precio mínimo que debe pagarse al productor de leche en México, para reducir en el largo plazo la dependencia de las importaciones de lácteos sin aumentar el precio al consumidor. La información analizada se obtuvo de fuentes nacionales e internacionales y 20 entrevistas con productores. El precio mínimo en el 2009, para el productor primario fue de $ 6.44 por L de leche. Se propone que la estructura de producción de 50, 21 y 29 %, aportada por sistema...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cadena productiva; Fuerza de mercado; Margen de comercialización; Precios.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000500008

Eficiencia en el uso de la radiación, tasa de asimilación neta e integral térmica en función del fósforo en maíz (Zea mays L.)
Provedor de dados: 115
Autores: Díaz-López,Ernesto; Loeza-Corte,Juan M.; Campos-Pastelín,Jesús M.; Morales-Rosales,Edgar J.; Domínguez-López,Aurelio; Franco-Mora,Omar.
El fósforo es un macroelemento esencial pata las plantas y junto con factores ambientales, como la radiación y la temperatura, influye en el crecimiento y rendimiento de los cultivos como el maíz (Zea mays L.). El objetivo del presente estudio fue comparar el efecto de seis niveles de fósforo (0, 40, 80, 120, 160 y 200 kg de P2O5 ha-1) en la eficiencia en el uso de la radiación, la tasa de asimilación neta y las unidades calor de los cultivares de maíz Amarillo Almoloya, Cacahuacintle y Cóndor, en condiciones de punta de riego, en el Cerrillo Piedras Blancas, Estado de México. El diseño experimental fue de bloques completos al azar con arreglo factorial; los 18 tratamientos resultaron de las combinaciones de los tres cultivares y los seis niveles de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cultivares; Polinización libre; Rendimiento agronómico; Unidades calor; Zea mays.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000200003

El tamaño de las unidades de producción de maíz (Zea mays L.): un desafío para elevar la tasa de utilización de semilla mejorada
Provedor de dados: 115
Autores: García-Salazar,J. Alberto; Ramírez-Jaspeado,Rocío.
Un objetivo del Programa de Modernización Sustentable de la Agricultura Tradicional (MasAgro) es el aumento de la producción de maíz (Zea mays L.) a través de prácticas agronómicas mejoradas y el uso de semilla mejorada de rendimiento alto. Para cuantificar la relación entre el tamaño de las unidades de producción (UP) de maíz y la tasa de utilización de semilla mejorada (TUM) se construyó un modelo de ecuaciones simultáneas integrado por ecuaciones que relacionan la producción, el rendimiento, las tasas de utilización de semilla mejorada y criolla, y el ingreso por hectárea en ocho regiones productoras de México. El análisis de los resultados indican una relación positiva entre el tamaño de la UP y la TUM. En el Noroeste y Occidente de México, regiones...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays L.; Tamaño de las unidades de producción; Ingreso por hectárea; Tasa de utilización de semilla mejorada.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000800008

Transferencia regional de información hidrológica mediante regresión lineal múltiple de tipo ridge
Provedor de dados: 115
Autores: Campos-Aranda,Daniel F.
Cuando se emplean registros largos de escurrimiento, lluvia o crecientes anuales de una región con respuesta hidrológica similar, para ampliar una serie corta a través de la técnica estadística de regresión lineal múltiple (RLM), es probable que tales registros por su semejanza intrínseca den origen a un problema de multicolinealidad. Tal problema se debe detectar y cuantificar para saber si es aceptable, moderada, fuerte o grave y buscar soluciones alternativas al método de ajuste de la RLM por mínimos cuadrados de los residuos. En este estudio se diagnosticó la multicolinealidad mediante factores de inflación de la variancia e índices de condición, basados en los eigenvalores. Además se presenta como método alternativo el ajuste sesgado de la RLM,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Multicolinealidad; Factores de inflación de la varianza; Eigenvalores; Eigenvectores; Índices de condición; Traza Ridge; Homogeneidad regional; Río Tempoal.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000500001

La somatotropina bovina recombinante y la reproducción en bovinos, ovinos y caprinos
Provedor de dados: 115
Autores: Hernández-Cerón,Joel; Gutierrez-Aguilar,C. Guillermo.
En vacas, la somatotropina bovina recombinante (rbST) se utiliza para incrementar la producción de leche. La rbST aumenta las concentraciones séricas del factor de crecimiento parecido a la insulina tipo I (IGF-I) y ambas hormonas regulan los procesos fisiológicos para incrementar la lactopoyesis. Además de sus efectos en la lactación, la somatotropina y el IGF-I favorecen la maduración del ovocito, tasa de fertilización, desarrollo embrionario temprano, función del cuerpo lúteo y reconocimiento materno de la gestación. La administración de la rbST se ha evaluado en diferentes periodos fisiológicos para mejorar la eficiencia reproductiva en rumiantes. En vacas lecheras subfértiles, la administración de rbST en la inseminación aumenta el porcentaje de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: RbST; Fertilidad; Vacas; Ovejas; Cabras.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000100004

Control de bacterias patógenas y hongos de postcosecha con extractos del pigmento de Gibberella zeae (Fusarium graminearum)
Provedor de dados: 115
Autores: Villanueva-Arce,Ramón; Aguilar-Pompa,C. Arturo; Gómez y Gómez,Y. de las Mercedes; Valencia-Del Toro,Gustavo; Piña-Guzmán,A. Belem; Bautista-Baños,Silvia.
El objetivo del estudio fue evaluar efectos del extracto etanólico crudo del pigmento rojo-púrpura producido por Gibberella zeae (Fusarium graminearum) en el control de las bacterias Bacillus subtilis, Salmonella typhi, Shigella sp., Staphylococcus aureus, Escherichia coli, la levadura Candida albicans, y los hongos Colletotrichum acutatum, C. fiagariae y C. gloeosporioides. El diseño experimental fue completamente al azar con un arreglo factorial 3x2 de tratamientos: temperatura (20; 28 °C), pH (6; 8) y medio de cultivo sólido (PDA; EMA; Czapeck) y líquido (caldo papa; caldo extracto de malta y caldo Czapeck). Las variables de respuesta fueron tipo y hábito de crecimiento del micelio, color de la colonia, diámetro de la colonia (mm), tiempo (d) de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pigmentos fúngicos; Aurofusarina; Salmonella; Shiguella; Colletotrichum.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000700006

Características del almidón de maíz y relación con las enzimas de su biosíntesis
Provedor de dados: 115
Autores: Agama-Acevedo,Edith; Juárez-García,Erika; Evangelista-Lozano,Silvia; Rosales-Reynoso,Olga L.; Bello-Pérez,Luis A.
Las tortillas de maíz azul difieren en sabor y textura de las de maíz blanco. Estas diferencias podrían atribuirse a la dureza del grano o a la estructura del almidón, la cual está influenciada por los mecanismos de su biosíntesis y repercute en la estructura de sus dos componentes principales. El objetivo del presente estudio fue analizar el almidón de maíz azul y blanco en dos etapas de desarrollo del grano, para asociar sus características morfológicas y fisicoquímicas con la estructura, y esta última con las enzimas que participan en su biosíntesis. El maíz se cosechó a los 20 y 50 d después de la polinización (ddp) y el almidón se cuantificó, y se aisló para ser caracterizado. Se extrajeron y separaron por peso molecular las enzimas de biosíntesis del...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amilosa; Amilopectina; Biosíntesis del almidón; Maíz azul y blanco.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000100001

Aplicación de fuentes de fósforo al suelo en diferentes cortes de césped cultivado
Provedor de dados: 115
Autores: Afif,Elías; Palencia,Pedro; Oliveira,J. Alberto.
El objetivo de este estudio fue evaluar la disponibilidad de fósforo (P) en distintos tipos de suelos del Principado de Asturias, España, al aplicar diferentes fuentes de P en 200 mg kg-1 de suelo. La composición del césped, cultivado en macetas, fue una mezcla de Agrostis tenuis cv. Highland 5 %, Poa pratense cv. Balin 5 %, Festuca rubra cv. Mystic 35 % y Lolium perenne cv. Nui 55 %. Los tratamientos se generaron con un diseño factorial completo de 12 tipos de suelos, cuatro fuentes de P y tres fechas de corte. Las fuentes de P fueron suelo sin fertilizar, fosfato diamónico (FD; 18 % N-46 % P2O5), abono complejo de P y K (RF; 20-5 de P2O5 y K2O) y superfosfato de calcio simple (SF; 18 % de P2O5), todos con dos repeticiones. El análisis del césped se...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mehlich 3; Materia seca; Disolución aparente; Fertilización fosfatada; Fósforo asimilable.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000600003

Biodegradation of wastewater pollutants by activated sludge coimmobilized with Scenedesmus obliquus
Provedor de dados: 115
Autores: Ruiz-Marin,Alejandro; Canedo-Lopez,Yunuen; Campos-Garcia,Silvia del C.; Sabido-Perez,Mirna Y.; Zavala-Loria,José del C.
Wastewater treatment plants produce large quantities of biomass (sludge) that require about one-third of the total investment and plant operation costs for their treatment. With microbial immobilization and coimmobilization with microalgae, it is possible to handle high cell concentration in the column reactor and increase its efficiency. The experimental design consisted in immobilized and coimmobilized S. obliquus with activated sludge in alginate beads cultured under continuous light or photoperiods (12 h/12 h) in artificial wastewater medium to evaluate the growth, nutrients and biochemical oxygen demand (BOD) removal. The results showed that the microalgae S. obliquus immobilized and coimmobilized in cultures under continuous light had higher growth...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Activated sludge; Coimmobilization; Growth; Scenedesmus obliquus; Nitrogen and organic matter removal.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000500002

Evaluación de aislados nativos mexicanos de Beauveria bassiana (Bals.) Vuill. (Hypocreales: Cordycipitaceae) provenientes de zonas citrícolas para su producción masiva en cultivo sumergido y bifásico
Provedor de dados: 115
Autores: Gandarilla-Pacheco,F. Lizeth; Galán-Wong,Luis J.; Arévalo-Niño,Katiushka; Elías-Santos,Myriam; Quintero-Zapata,Isela.
La comprensión de los aspectos básicos del desarrollo de los hongos entomopatógenos y el conocimiento detallado de los requerimientos nutricionales para su crecimiento y esporulación es esencial para la producción masiva y comercialización. El objetivo de este estudio fue evaluar la producción de blastoesporas en un medio de cultivo sumergido y de conidios en un cultivo bifásico, de cuatro aislados nativos y una cepa de B. bassiana con potencial para controlar Diaphorina citri (Hemiptera: Liviidae), pertenecientes a la colección del Instituto de Biotecnología, FCB-UANL, México. El diseño experimental fue completamente al azar y las medias se compararon con la prueba Tukey (p≤0.05). En el medio de cultivo líquido formulado con glucosa y casaminoácidos, la...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hongos entomopatógenos; Conidios; Blastoesporas; Cultivo sumergido; Bifásico.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000300005

Análisis comparativo entre jarabe de agave azul (Agave tequilana Weber var. azul) y otros jarabes naturales
Provedor de dados: 115
Autores: Mellado-Mojica,Erika; López-Pérez,Mercedes Gpe.
El jarabe de agave azul (Agave tequilana Weber var. azul) es la sustancia dulce natural producida por hidrólisis de los fructanos almacenados en la planta de maguey. Este endulzante se ha popularizado por su capacidad prebiótica e índice glucémico bajo respecto a otros jarabes y mieles naturales. Las marcas comerciales, distribuidores, producción y comercialización de estos jarabes han incrementado, por ello es conveniente conocer sus características físicas y químicas y contrastarlas con las de otros productos del mismo tipo. En el presente estudio se determinaron el contenido de sólidos solubles totales (SST) y de humedad, pH, perfil de carbohidratos y algunas características sensoriales de 29 muestras de jarabes de agave azul, maíz y caña, y miel de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agave tequilana Weber var. azul; Endulzante natural; Fructooligosacáridos; Jarabe de agave azul; Perfil de carbohidratos; Propiedades físicas y químicas.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000300003

Eficiencia técnica y viabilidad de los sistemas de pastoreo de vacunos de leche en La Pampa, Argentina
Provedor de dados: 115
Autores: Angón,Elena; García,Antón; Perea,José; Acero,Raquel; Toro-Mújica,Paula; Pacheco,Hernán; González,Ana.
Los sistemas lecheros pastoriles de La Pampa atraviesan una situación difícil debido a la escasa rentabilidad y a la relación competitiva y sustitutiva entre la agricultura y la ganadería por el uso del suelo. La agricultura (soja y maíz fundamentalmente) cotiza a precios internacionales, pero la producción lechera compite en el mercado interior argentino. En esta situación compleja es preciso conocer la eficiencia y viabilidad de estos sistemas en la provincia de La Pampa (Argentina). Se realizó un muestreo aleatorio estratificado por departamentos con asignación proporcional y fueron entrevistados 47 productores que representan 27 % de los productores de la cuenca Pampeana. La producción lechera (PL, L año-1) se modelizó respecto al tamaño del rebaño en...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Benchmarking; Gestión; Toma de decisiones; Viabilidad económica.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000500003

Morfología, biomasa y contenido nutrimental en Abies religiosa con regímenes diferentes de fertilización en vivero
Provedor de dados: 115
Autores: Navarro-Sandoval,José L.; Vargas-Hernández,J. Jesús; Gómez-Guerrero,Armando; Ruíz-Posadas,Lucero de Mar; Sánchez-García,Prometeo.
La fertilización en vivero es una práctica de cultivo usada para modificar las características morfológicas que afectan los índices de calidad de la planta. El objetivo de este estudio en vivero fue evaluar el efecto de la fertilización en el crecimiento, la morfología, la asignación de biomasa y el estado nutrimental en plantas de Abies religiosa. Hubo cuatro niveles de fertilización (T-50, T Base, T+50 y T+100) a partir de la dosis usada en vivero (T Base), con un diseño completamente al azar con cuatro unidades experimentales, cada una con 900 plantas. La presencia imprevista de daño por heladas en el brote terminal de algunas plantas permitió comparar la respuesta a la fertilización de las plantas con y sin daño. Durante siete meses después de la...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Calidad de planta; Distribución de biomasa; Nutrición forestal; Producción de planta.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000700007

Ecuaciones alométricas para estimar biomasa y carbono de cuatro especies leñosas neotropicales con potencial para la restauración
Provedor de dados: 115
Autores: Douterlungne,David; Herrera-Gorocica,Angel M.; Ferguson,Bruce G.; Siddique,Ilyas; Soto-Pinto,Lorena.
Un reto ambiental actual es reducir los gases de efecto invernadero (GEI) a través de la reforestación. Las plantaciones forestales con las especies y manejo adecuados secuestran carbono y recuperan áreas degradadas simultáneamente, pero es necesario refinar los métodos para estimar su biomasa. En la Selva Lacandona en México se cosecharon 103 árboles para determinar ecuaciones alométricas para cuatro especies abundantes en los Neotrópicos y con alto potencial pata la restauración: Guazuma ulmifolia, Trichospermum mexicanum, Inga vera y Ochroma pyramidale. Los mejores predictores de la biomasa fueron el diámetro a la altura del pecho y en la base; con ellos se generaron relaciones alométricas con r² mayor a 0.90. Con base en estas relaciones la acumulación...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Guazuma ulmifolia; Inga vera; Modelos polinomiales; Ochroma pyramidale; Selva húmeda perennifolia; Trichospermum mexicanum.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000400007

Respuesta de la demanda de agua a cambios en el precio: un estudio por tipo de consumidor en el norte de Sinaloa, México
Provedor de dados: 115
Autores: Torres-Sombra,Jesús; García-Salazar,José A.; García-Mata,Roberto; Matus-Gardea,Jaime; González-Estrada,Elizabeth; Pérez-Zamorano,Abel.
La disminución del nivel de almacenamiento de agua en las presas en el norte de Sinaloa, México, y el incremento de la demanda agrícola y residencial hacen urgente establecer políticas que promuevan la distribución y uso eficiente. Para conocer los factores que explican el comportamiento de la demanda de agua en los sectores residencial, agrícola, pecuario, industrial y comercial del norte de Sinaloa, se estimó un modelo de ecuaciones simultáneas, compuesto de diez ecuaciones y tres identidades. El análisis de los resultados indica que la demanda de agua en esos sectores responde de manera inelástica a cambios en el precio, con elasticidades de -0.087, -0.125, -0.065, -0.082 y -0.0054, respectivamente. La disminución de cinco puntos porcentuales en la...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agua; Elasticidad; Modelo de ecuaciones simultáneas; Sectores agrícola; Pecuario; Industrial; Comercial y residencial.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000300008

Auto-aclareo y guías de densidad para Pinus patula mediante el enfoque de regresión de frontera estocástica
Provedor de dados: 115
Autores: Santiago-García,Wenceslao; De los Santos-Posadas,Héctor M.; Ángeles-Pérez,Gregorio; Valdez-Lazalde,José R.; Del Valle-Paniagua,David H.; Corral-Rivas,J. Javier.
El manejo forestal en la región de Zacualtipán, estado de Hidalgo, México, se ha enfocado en las últimas tres décadas a cultivar rodales coetáneos puros de Pinus patula, la especie maderable nativa con crecimiento más rápido y valor comercial alto. El crecimiento rápido de P. patula requiere un manejo adecuado de la densidad del rodal para programar los aclareos y optimizar el turno de los rodales. En este estudio se determinó la línea máxima de la relación densidad-tamaño o auto-aclareo considerando el enfoque de regresión de frontera estocástica y mínimos cuadrados ordinarios para el modelo de Reineke y Yoda. En la estimación se utilizó información dasométrica derivada de 42 parcelas permanentes de muestreo de 400 m². Las mejores estimaciones de la línea...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pinus patula; Densidad-tamaño; Diagrama de densidad; Índice de densidad.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000100007

Effects of land use conversion on soil aggregate stability and organic carbon in different soils
Provedor de dados: 115
Autores: Ćirić,Vladimir; Manojlović,Maja; Belić,Milivoj; Nešić,Ljiljana; Šeremešić,Srdan.
Aggregate stability is an important factor of the soil functioning. Greater aggregate stability leads to greater soil organic carbon (SOC) preservation, while SOC acts as a key cementing agent in aggregation processes. The objective of this study was to investigate the effects of native vegetation conversion in soil aggregate stability and SOC concentration. The investigation was conducted in the Vojvodina Province, Serbia, in July 2009. Undisturbed soil samples were taken from Haplic Chernozem, Haplic Fluvisol and Gleyic Vertisol, at a depth ranging from 0 to 20 cm. A completely randomized experimental design was used with three replicates. Each soil type was considered under treatments 1) cropland &amp;gt;100 years, 2) native meadow and 3) native...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aggregate stability; Soil organic carbon; Land use change; Soil type; Soil structure.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000600002

Efecto de la densidad y método de siembra en el rendimiento de grano de trigo (Triticum aestivum L.) en el Bajío, México
Provedor de dados: 115
Autores: Suaste-Franco,M. Pilar; Solís-Moya,Ernesto; Ledesma-Ramírez,Lourdes; de la Cruz-Gonzalez,M. Lourdes; Grageda-Cabrera,O. Arath; Báez-Pérez,Aurelio.
Los rendimientos de trigo (Triticum aestivum L.) dependen de la fecha, método y densidad de siembra. El objetivo de esta investigación fue estudiar el efecto del método y la densidad de siembra en fechas de siembra intermedias y tardías sobre el rendimiento del grano de dos cultivares de trigo. En los ciclos otoño-invierno de 2006 a 2008 se evaluaron dos fechas de siembra (22 de diciembre y 12 de enero), cuatro métodos de siembra (melgas de cuatro y seis hileras y surcos de dos y tres hileras), cuatro densidades de siembra (60, 120, 180 y 240 kg semilla ha-1) y dos cultivares (Bárcenas S2002 y Josecha F2007). El diseño experimental fue de bloques al azar con un arreglo en parcelas sub subdivididas, con cuatro repeticiones. El rendimiento mayor se obtuvo en...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Triticum aestivum; Melgas; Surcos; Hileras.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000200005

Fe de erratas
Provedor de dados: 115
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000800009

Establecimiento inicial de tres especies del bosque tropical seco en un pastizal degradado: efectos del uso de acolchado y compost
Provedor de dados: 115
Autores: Núñez-Cruz,Adriana; Bonfil,Consuelo.
La disponibilidad de agua, las condiciones del suelo y la presencia de disturbios recurrentes son las principales limitantes para el establecimiento de plantas en sitios perturbados de bosques tropicales secos. El objetivo de este estudio fue evaluar el efecto de aplicar compost y usar acolchado plástico en la supervivencia y el crecimiento inicial de plantas de especies leñosas Dodonaea viscosa, Leucaena leucocephala y Lysiloma divaricatum, en un pastizal degradado en el noroeste de Morelos. En el 2009 se plantaron 121-124 plantas por especie, se aplicaron 500 mL de compost elaborada con estiércol de bovino, pasto y restos de plantas de tomate y después un acolchado plástico (cuadro de 40 x 40 cm) a plantas de cada especie seleccionadas al azar, y se...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dodonaea viscosa; Estrés hídrico; Leucaena leucocephala; Lysiloma divaricatum; Pastizal; Restauración.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000600007

Resistencia a roya de la hoja en variedades de trigo (Triticum spp. L.) adaptadas a El Bajío, México
Provedor de dados: 115
Autores: Solis-Moya,Ernesto; Huerta-Espino,Julio; Rodríguez-García,María F.; Villaseñor-Mir,Héctor E.; Espitia-Rangel,Eduardo; Ledesma-Ramírez,Lourdes; Suaste-Franco,María del P.
La roya de la hoja causada por Puccinia triticina es una de las principales enfermedades del trigo (Triticum spp. L.) en México. A través del mejoramiento genético es posible incorporar genes de resistencia en la plántula y planta adulta que permitan mantener la resistencia a la roya de la hoja por periodos largos de tiempo. El objetivo de esta investigación fue postular los genes de plántula y determinar la resistencia de la planta adulta a la roya de la hoja en variedades de trigo recomendadas para El Bajío, México. Se postularon los genes en las plántulas, en condiciones de invernadero, en 11 variedades y en el campo se determinó la resistencia de las plantas adultas. En trigos cristalinos, se postularon los genes Lr10 y 23 y uno no identificado. Lr10 y...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Genes de resistencia; Puccinia triticina; Planta adulta; Plántula.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000500004

Influencia de micorrizas arbusculares Glomus spp. En el crecimiento y acumulación de cobre en girasol Helianthus annuus L.
Provedor de dados: 115
Autores: Castañón-Silva,Paulina A.; Venegas-Urrutia,Michael A.; Lobos-Valenzuela,María G.; Gaete-Olivares,Hernán J.
La actividad minera del cobre (Cu) en Chile genera grandes cantidades de desechos tóxicos que contaminan los suelos; una alternativa para recuperar estos suelos es utilizar micorrizas, microorganismos del suelo adaptados a esta condición para inocular las raíces de las plantas. El objetivo del presente estudio fue determinar la influencia de micorrizas arbusculares (MA) del género Glomus spp. en el crecimiento y la acumulación de Cu de girasol (Helianthus annuus L.). En la cuenca del río Aconcagua, Chile central, se recolectaron muestras de suelo contaminados con Cu; los suelos 1 y 2 del Valle de Catemu y el suelo 3 del Valle de Puchuncaví. En esos suelos, inoculados (M+) y no inoculados (M-) con MA se sembraron semillas de girasol. A los 50 d se midió la...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Colonización micorrízica; Fitoestabilización y Helianthus annuus L.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000400001

Densidad y composición de árboles dispersos en potreros en la sierra de Tabasco, México
Provedor de dados: 115
Autores: Martínez-Encino,Cándido; Villanueva-López,Gilberto; Casanova-Lugo,Fernando.
Los potreros de la Sierra de Tabasco, México, son manejados usando conocimientos locales y se caracterizan principalmente por la presencia de árboles jóvenes que crecen espontáneamente y retenidos deliberadamente por el productor, aunque algunos árboles también fueron plantados. Estos árboles tienen un diámetro normal predominante de 20-30 cm, altura de 6-8 m, área de copa de 20-40 m², fuste limpio de 3-4 m, y su sombra favorece el desarrollo de una amplia riqueza de especies. El objetivo de este estudio fue describir la composición florística en algunos potreros selectos de Tacotalpa y Tenosique; los datos se analizaron mediante estadística descriptiva. La frecuencia de árboles adultos fue 2 % y 5 %, índice de Shannon (H') 1.37±(0.33) y 1.61±(0.22),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sistemas silvopastoriles; Conocimiento local; Cobertura herbácea; Tacotalpa; Tenosique.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000500006

Evaluación del valor percibido en el consumo de café con atributos éticos
Provedor de dados: 115
Autores: Aragón-Gutiérrez,Carlos; Montero-Simó,María J.; Araque-Padilla,Rafael Á.; Gutiérrez-Gutiérrez,Leopoldo.
Los productores agropecuarios pueden aumentar significativamente sus ingresos económicos incorporando atributos éticos a los bienes que ofertan. Sin embargo, la disposición que manifiesta el consumidor por adquirir productos con atributos éticos no siempre se traduce en compras reales. El propósito del presente estudio fue analizar y medir los componentes del valor percibido en productos con atributos éticos. El conocimiento generado podría contribuir a explicar esa discrepancia. A partir de la teoría del valor percibido por el consumidor se estudió la valoración que el consumidor hace para cada una de las características del café con atributos éticos. El estudio se realizó mediante una encuesta aplicada a 391 clientes de las cafeterías de una franquicia...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Café orgánico; Comercio justo; Ecuaciones estructurales; Intención de recompra.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000200008

Almacenes de carbono en bosques montanos de niebla de la Sierra Norte de Oaxaca, México
Provedor de dados: 115
Autores: Álvarez-Arteaga,Gustavo; García Calderón,Norma E.; Krasilnikov,Pavel; García-Oliva,Felipe.
Una de las principales incertidumbres sobre la función de los bosques tropicales y subtropicales dentro del ciclo global del carbono proviene de la escasa información sobre la capacidad de estos ecosistemas para acumular carbono (C). En el caso de los bosques montanos de niebla, la amplia heterogeneidad ambiental a la que están sujetos determina cambios importantes sobre su composición estructural y florística, que pudieran incidir sobre los contenidos de C almacenado en sus diferentes componentes. El objetivo de este estudio fue evaluar el contenido de C en los almacenes aéreos y subterráneos para cinco comunidades de bosque montano de niebla en la Sierra Norte de Oaxaca, situadas entre1500 y 2500 m de altitud. El diseño fue de muestreo jerárquico anidado...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gradiente altitudinal; Carbono aéreo; Carbono subterráneo; Condiciones físicas; Bióticas.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000200006

Study of heterosis in Bangladeshi Chilli (Capsicum annuum L.) Landraces
Provedor de dados: 115
Autores: Hasanuzzaman,M.; Hakim,M. A.; Hanafi,M. M.; Shukor-Juraimi,Abdul; Islam,M. M.; Shamsuddin,A. K. M.
Chilli is an important cash crop in Bangladesh but average yield is very low (0.89 t ha-1) and genetic potentiality of Bangladeshi chilli landraces for hybrid variety development has not been evaluated. The objective of this study was to find out heterotic behavior following Gardner and Eberhart model (1966) II. Six different homozygous divergent parents CCA 2, CCA 5, BARI Morich 1, CCA 11, CCA 15 and CCA 19 were used to estimate heterosis. A significant amount of heterosis was present in yield and yield contributing traits. Estimate of variety heterosis for yield per plant was significantly positive in CCA 5 and BARI Morich 1. In BARI Morich 1, the significant and positive variety heterosis for yield per plant was associated with significant and positive...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Capsicum annuum L; Indigenous X exotic cross; Yield.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000700005

Estimation of leaching flow using a gee passive capillary lysimeter under controlled conditions
Provedor de dados: 115
Autores: Lahuathe,Braulio; Rivera,Diego; Arumi,José; Sandoval,Marco.
Knowledge of the dynamic of water in the soil is essential to estimate both the movement of nutrients from the unsaturated to the saturated zone and groundwater contamination. The objective of this study was to compare drained water data from a Gee Passive Capillary Lysimeter (GPCL; Decagon Devices Inc, Pullman, USA) with model simulations in a soil column. Two experiments were set with the GPCL with different sensor settings and initial moisture content. Preliminary evaluation of the measured data was compared with data simulated by a soil-water model (CRITERIA BdP). The first experiment (GPCL1, soil column with disturbed soil and dry soil as initial condition) generated reliable data. The second experiment (GPCL2, soil column with disturbed soil with wet...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gee passive capillary lysimeter; Water balance; Drainage; CRITERIA model.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000700001

Efecto del agua residual tratada sobre la composición química de Uva Tempranillo (Vitis vinifera) en Baja California, México
Provedor de dados: 115
Autores: Acosta-Zamorano,Dinora; Macías-Carranza,Víctor; Mendoza-Espinosa,Leopoldo; Cabello-Pasini,Alejandro.
La viticultura está limitada en Baja California por la disponibilidad del agua debido a que es una zona semidesértica, peto las aguas residuales tratadas (ART) se podrían utilizar pata regar algunos cultivos. Por tanto, el objetivo de este estudio fue evaluar el impacto del riego de la vid con ART sobre la calidad microbiológica y química de las uvas en el Valle de Guadalupe, México. Entre 10 a 20 L semana-1 de ART de la planta de tratamiento de El Sauzal fueron aplicados a vides Tempranillo de 5 años de edad y para los testigos se usó agua del acuífero Valle de Guadalupe. El análisis mostró que las ART de la planta de tratamiento cumplieron con todos los parámetros de las normas NOM-001-SEMARNAT-1996 y NOM-003-SEMARNAT-1997 para el riego restringido y no...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agua residual tratada; Viticultura; Madurez; Uva.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000800003

Producción de hojarasca en Pinus halepensis Mill. y Pinus cembroides Zucc. y su relación con algunos factores climáticos
Provedor de dados: 115
Autores: López-López,J. Damián; Méndez González,Jorge; Nájera-Luna,J. Abel; Cerano-Paredes,Julián; Flores-Flores,J. David; Nájera-Castro,J. Armando.
La producción de hojarasca es una medida de la productividad primaria neta, que además se relaciona con almacenes de carbono en el suelo. El objetivo de esta investigación fue cuantificar durante un año la caída de hojarasca de una población de Pinus cembroides Zucc. (685 árboles ha-1 de 60 años) y una de P. halepensis Mill. (3760 árboles ha-1 de 20 años), ubicadas en un mismo sitio en la Sierra de Arteaga, Coahuila, México, y correlacionarla con los factores ambientales. Las recolecciones se realizaron mensualmente de marzo 2010 a febrero 2011. La prueba no paramétrica de Kruskal-Wallis (95 %) indicó que la caída de hojarasca fue estadísticamente mayor (p≤0.0001) en P. halepensis (27.21±22.11 g m-2 mes-1) que en P. cembroides (8.19±10.75 g m-2 mes-1),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hojarasca; Lluvia; Pino halepo; Pino piñonero.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000500007

Hongos asociados a pudrición del pedúnculo y muerte descendente del mango (Mangifera indica L.)
Provedor de dados: 115
Autores: Sandoval-Sánchez,Maricarmen; Nieto-Ángel,Daniel; Sandoval-Islas,J. Sergio; Téliz-Ortiz,Daniel; Orozco-Santos,Mario; Silva-Rojas,H. Victoria.
Las pudriciones del pedúnculo de frutos y muerte descendente de ramas de mango (Mangifera indica L.) son asociadas con hongos de la familia Botryosphaeriaceae. Los objetivos de este estudio fueron identificar morfológica y filogenéticamente diferentes cepas de hongos aisladas de frutos con pudrición del pedúnculo y ramas con muerte descendente de los cultivares Ataulfo, Kent y Tommy Atkins, de cinco estados productores de México, y determinar su asociación con ambas enfermedades. Las muestras se recolectaron entre marzo del 2010 y junio del 2011. Los hongos asociados con la pudrición del pedúnculo correspondieron a Lasiodiplodia theobromae y Neofusicoccum parvum, y se detectó también a Neofusicoccum sp.; los hongos asociados con la muerte descendente de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hongos postcosecha; Lasiodiplodia pseudotheobromae; Lasiodiplodia theobromae; Neofusicoccum parvum; Neofusicoccum sp.; Mangifera indica.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000100006

Avenanthramides and nutritional components of four mexican oat (Avena sativa L.) varieties
Provedor de dados: 115
Autores: Ortiz-Robledo,Faviola; Villanueva-Fierro,Ignacio; Oomah,B. Dave; Lares-Asef,Ismael; Proal-Nájera,J. Bernardo; Návar-Chaidez,J. Jesús.
Oat (Avena sativa L.) is a cereal grain, its seeds are rich in nutrients, is consumed as whole grain with health benefits fot humans due to its antioxidants, such as the avenanthtamides (Avns). The contents of Avns 2c, 2f and 2p were evaluated by HPLC in groats and hulls of oat varieties Chihuahua, Cuauhtemoc, Raima and Avemex cultivated in Durango, México. The association of these Avns with protein, fat, crude fiber and ash of oat was also investigated. A 4x2 bifactorial design was used, with the number of varieties and groats ot hulls as factors. Avns contents differed significantly (p&lt;0.05) among oat varieties, groats and hulls. Avemex groats had the highest concentrations of Avns: 3.6±0.7, 3.0±0.5 and 3.3±0.6 mg kg-1 fot 2c, 2f and 2p Avns. Avemex...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidants; Groats; Hulls; Oat; Polyphenols.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000300002

Technical and economical analysis of a combined biogas-ethanol-biodiesel plant in Central Chile
Provedor de dados: 115
Autores: Reyes-Aroca,José F.; Vidaurre-Parra,Cristian A.
The economic feasibility and the technical consistency of a system to produce biofuels were analyzed in Central Chile in the year 2010. In this study, the biodiesel, ethanol, and biogas platforms were integrated to assess the internal rate of return (IRR) and net present value (NPV) indexes. The analysis included the influence of the type of alcohol used in the manufacture of biodiesel (ethanol versus methanol), the effect of the relative size of the platform of ethanol with respect to biodiesel, and the impact of the value of main agricultural feedstocks. The study used combinations of plant sizes of10 000-20 000 m³ y -1 for ethanol, and 20 00040 000 m³ y -1 for biodiesel, and in all the cases the biogas platform was projected with a generating capacity...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biofuels; Fuel cost; NPV (net present value); Mass-energy balance.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000600008

Caracterización fenotípica del guajolote autóctono (Meleagris gallopavo) y sistema de producción en la región centro norte de Chiapas, México
Provedor de dados: 115
Autores: Cigarroa-Vázquez,Francisco; Herrera-Haro,José G.; Ruiz-Sesma,Benigno; Cuca-García,Juan M.; Rojas-Martínez,Reyna I.; Lemus-Flores,Clemente.
El guajolote (Meleagris gallopavo) es una especie avícola que forma parte del patrimonio ancestral de México, con genotipos adaptados a diversos climas y sistemas de producción en pequeña escala y con gran aceptación de la población rural. Debido a la escasa información sobre esta especie, se realizó un estudio en la región centro norte del estado de Chiapas para caracterizar el sistema de producción mediante una encuesta en 52 unidades de producción rural (UP) y evaluación morfológica en 212 guajolotes autóctonos (GA). La información incluyó aspectos socioeconómicos de los productores, manejo general del GA, costos y destino de la producción. Las variables para GA fueron peso vivo, color del plumaje y medidas de cuello, cabeza, cuerpo y piernas. El...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Meleagris gallopavo; Sistema producción; Morfometría.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000600005

Comparación de siete fórmulas chilenas para la valoración del arbolado urbano
Provedor de dados: 115
Autores: Ponce-Donoso,Mauricio; Vallejos-Barra,Óscar; Daniluk-Mosquera,Gustavo; Avilés-Palacios,Carmen.
Los árboles urbanos aportan al ambiente a través de sus funciones biológicas y amenidades, y son un valor económico y social para las ciudades, así como un valor en sostenibilidad. Sin embargo, su valor en términos monetarios es difícil de cuantificar, se obtiene principalmente mediante fórmulas, siendo una práctica adoptada en diversas ciudades. El objetivo del presente estudio fue comparar siete fórmulas usadas en diez municipios de Chile (siete comunas del gran Santiago: La Florida, La Pintana, Maipú, Ñuñoa, Peñalolén, Renca y Vitacura; y tres ciudades: Antofagasta, Concepción y Talca), incluyendo la fórmula del Council of Tree Landscape Appraiser (CTLA) de EE.UU. Las fórmulas se aplicaron a dos árboles de 14 especies seleccionadas en diferentes...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arboricultura; Tasación de árboles; Valor del árbol.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000700008

El mercado del plátano (Musa paradisiaca) en México, 1971-2017
Provedor de dados: 115
Autores: García-Mata,Roberto; González-Machorro,M. Félix; García-Sánchez,R. Carlos; Mora-Flores,J. Saturnino; González-Estrada,Adrián; Martínez-Damian,M. Ángel.
El plátano (Musa paradisiaca) es una fruta de consumo generalizado en México debido a su valor nutritivo, disponibilidad todo el año y su precio relativamente bajo. La producción promedio de 2000 a 2010 fue 2 111 800 t y el consumo total y per cápita de 2 037 909 t y 19.7 kg. El objetivo de este estudio fue analizar el mercado nacional del plátano de 1971 a 2010 y efectuar proyecciones hasta el 2017 mediante un modelo econométrico de ecuaciones simultáneas, el cual se estimó con mínimos cuadrados en dos etapas con el procedimiento SYSLIN de SAS. El análisis de los resultados mostró que las elasticidades de la oferta y la demanda de plátano para todos sus factores determinantes fueron muy inelásticas, con excepción de la superficie cosechada, cuyo...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Musa paradisiaca; Modelo econométrico; Elasticidades.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000400008

La bioeconomía, las biorefinerías y las opciones reales: el caso del bioetanol y el azúcar
Provedor de dados: 115
Autores: Brambila-Paz,José de J.; Martínez-Damián,Miguel Á.; Rojas-Rojas,María M.; Pérez-Cerecedo,Verónica.
Los productos de la bioeconomía que usan materia prima de primera generación tienen un escenario inestable en el precio relativo entre el producto genérico y el diferenciado. Es el caso entre los precios del azúcar y del bioetanol, ambos obtenidos de la caña de azúcar (Saccharum officinarum). El objetivo del presente estudio fue evaluar si un proyecto polivalente que produce azúcar y bioetanol tiene la probabilidad de que en el tiempo el capital valga más que si se hubiera depositado en el banco (costo de oportunidad del capital) en comparación con un proyecto monovalente (producir azúcar o producir bioetanol). La ecuación de Bellman, el movimiento Browniano y el Lema de Ito se emplearon en la determinación de valores críticos y las ecuaciones de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioetanol; Polivalente; Valor crítico; Bio-based-economy.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000300007

Urea de liberación lenta en dietas para bovinos productores de carne: digestibilidad, síntesis microbiana y cinética ruminal
Provedor de dados: 115
Autores: Castañeda-Serrano,Román D.; Ferriani-Branco,Antonio; Teixeira,Silvana; Garcia-Diaz,Tatiana; Diego-Sofiati,Altair.
Hay interés en buscar fuentes alternativas de urea que puedan degradarse lentamente en el rumen para evitar los problemas y restricciones derivadas de su uso. El objetivo de este estudio fue evaluar los efectos de sustituir urea convencional por urea de liberación lenta (ULL) en dietas para bovinos productores de carne, sobre el consumo voluntario, los coeficientes de digestibilidad aparente ruminal (CDR), intestinal (CDI) y total (CDT) de los nutrientes, la síntesis de proteína microbiana y la cinética ruminal. Se usaron cuatro novillos Nelore (peso vivo 565±45 kg), con cánula ruminal, en un diseño experimental Cuadro Latino 4×4. Los tratamientos fueron los siguientes: 0 ULL=100 % urea, 33 ULL=66 % urea y 33 % ULL; 66 ULL=33 % urea y 66 % ULL; 100 ULL=...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nitrógeno no proteico; Rumiantes; Urea de lenta libración.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000100002

Eficiencia de aplicación de agua en la superficie y en el perfil del suelo en un sistema de riego por aspersión
Provedor de dados: 115
Autores: Flórez-Tuta,Natalia; Zution-Gonçalves,Ivo; Feitosa,Daniel Rodrigues-Calvacante; Agnellos-Barbosa,E. Augusto; Deus,Fabio Ponciano-de; Diego-Ribeiro,Maycon; Eiji-Matsura,Edson.
Aplicaciones insuficientes o excesivas de agua se deben a dimensionamientos inadecuados de sistemas de riego, ocasionando pérdidas de agua y limitan su eficiencia. Así, la agricultura irrigada se debe realizar eficientemente adoptando prácticas pata racionalizar el uso del agua, haciéndola ambiental y económicamente sostenible. El objetivo del presente estudio fue evaluar la calidad de aplicación de agua en la superficie y en el perfil de un Oxisol, después del riego por aspersión convencional, utilizando la técnica de la TDR para monitorear el contenido de agua en el suelo. En campo se instalaron 196 colectores con espaciamiento de 2 m entre ellos y formando una malla con formato cuadrado. Con los datos recolectados se simularon sobreposiciones con...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Uniformidad; Modelo lineal; Lámina infiltrada.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000200001

Perfil e interrelación mineral en agua, forraje y suero sanguíneo de bovinos durante dos épocas en la Huasteca Potosina, México
Provedor de dados: 115
Autores: Vieyra-Alberto,Rodolfo; Domínguez-Vara,Ignacio A.; Olmos-Oropeza,Genaro; Martínez-Montoya,Juan F.; Borquez-Gastelum,José L.; Palacio-Nuñez,Jorge; Lugo de la Fuente,Jorge A.; Morales-Almaráz,Ernesto.
En la Huasteca Potosina no se han realizado diagnósticos integrales sobre los minerales en los bovinos de doble propósito en pastoreo a través del año, por lo cual el objetivo del presente estudio fue determinar la concentración e interrelación de minerales en agua, forraje y suero de bovinos de doble propósito. Para ello, se recolectaron 84 muestras de agua, 99 muestras de forraje y suero de 463 bovinos en 17 unidades de producción de la Huasteca Potosina, en la época húmeda (agosto y septiembre) y seca (abril y mayo) del 2008. Las concentraciones de Ca, P, Mg, K, Na, Fe, Zn, Cu y Mn se midieron en agua, forraje y suero. El diseño experimental fue completamente al azar y los datos se analizaron con el modelo lineal general. Los efectos de unidad de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Minerales; Bovinos; Forrajes; Época; Huasteca Potosina.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000200002

Proyecciones climáticas para el estado de Coahuila usando el modelo precis bajo dos escenarios de emisiones
Provedor de dados: 115
Autores: Mendoza-Hernández,J. María; Zermeño-González,Alejandro; Covarrubias-Ramírez,J. Manuel; Cortés-Bracho,J. Jesús.
El clima es un factor limitante en la producción agrícola y ante un apremiante cambio climático, se realizó este estudio con fines de diagnóstico para determinar los cambios climáticos futuros y sus efectos en la agricultura del estado de Coahuila, México. Bajo este contexto se analizó el clima con datos de 40 estaciones meteorológicas situadas en las diferentes regiones de Coahuila, usando los datos de precipitación y temperatura medidos durante el período 1961-1990. Este análisis consistió en clasificar el clima por el método de Köppen, modificado por Enriqueta García. El modelo numérico PRECIS (modelo escalado del Centro Hadley de Inglaterra) se aplicó para obtener las proyecciones de temperatura y precipitación de 2020, 2050 y 2080 y con ellas se...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Clima; Fórmula climática; Temperatura; Precipitación.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000600001

Estimación del hidrograma de crecientes con modelación determinística y precipitación derivada de radar
Provedor de dados: 115
Autores: Magaña-Hernández,Francisco; Bá,Khalidou M.; Guerra-Cobián,Víctor H.
En este estudio se destaca la importancia del uso de precipitación estimada por radar, en la modelación hidrológica de caudales máximos en cuencas con pluviometría deficiente. El modelado hidrológico con precipitación estimada por radar toma en consideración, detalladamente, la variabilidad espacial y temporal de la precipitación. El objetivo del presente estudio fue evaluar la simulación hidrológica de la cuenca del río Escondido en la estación hidrométrica 24290 (en Villa de Fuentes, Coahuila, México). El modelo hidrológico HEC-HMS fue utilizado para simular los caudales pico con datos de precipitación estimada por radar. La cuenca se ubica en una zona semidesértica con la característica de escurrimientos efímeros y eventos extraordinarios poco...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: HEC-HMS; NEXRAD; Eficiencia de Nash-Sutcliffe (E).
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000800001

Estudio comparativo entre la cepa de Pediococcus acidilactici aislada del rumen de borregos y un consorcio de bacteria ruminales
Provedor de dados: 115
Autores: Ley de-Coss,Alejandro; Arce-Espino,Consepción; Cobos-Peralta,Mario A.; Hernández-Sánchez,David; Pinto-Ruiz,René.
El objetivo de este estudio fue evaluar Pediococcus acidilactici (PA) in vitro para determinar la producción de ácido láctico, acético, propiónico y butírico, así como los cambios de pH, cuando se adiciona a un medio de cultivo con proporción alta de carbohidratos no estructurales. El diseño experimental fue completamente al azar, se evaluó el cultivo liofilizado de PA (T1) y se comparó con un consorcio de bacterias del fluido ruminal (FR). Los inóculos fueron adicionados a un medio de cultivo anaerobio con D-(+)-glucosa (5 %) más una dieta alta en energía; además se evaluó la adición de monensina (MO) y lasalocida (LA) al medio. Los medios se incubaron a 38 ±0.5 °C por 3, 6 y 12 h; al terminar cada periodo se evaluó la concentración de ácido láctico,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rumen; Bacterias totales; Bacterias ácido lácticas; Ácidos grasos volátiles; Ionóforos.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000600004

Series temporales de vegetación para un modelo forestal destruido: El caso de Tadla Azilal (Marruecos)
Provedor de dados: 115
Autores: Nemmaoui,Abderrahim; García-Lorca,Andrés M; Aguilar,Fernando J.; Aguilar,Manuel A.
La hipótesis de esta propuesta metodológica se basa en que las recientemente introducidas técnicas OBIA (Object Based Image Analysis), aplicadas a imágenes de satélite de media resolución y amplia disponibilidad histórica, representan una herramienta eficiente y precisa para detectar cambios en la cobertura y uso del suelo a escala geográfica regional. Como ejemplo de su potencial se realizó un análisis del fenómeno de la deforestación entre los años 1973 y 2010 en la región de Tadla Azilal (Marruecos) a través del uso de imágenes de satélite de la serie Landsat. Esta zona fue declarada oficialmente como afectada por deforestación aguda en varios estudios e informes ministeriales, aunque se carecía de información cuantitativa que sustentara ese dictamen....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Imagen de satélite; Técnicas OBIA; Deforestación; Tadla Azilal.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000300006

Conectividad en evaluaciones genéticas de animales: 2. Comparación de metodologías
Provedor de dados: 115
Autores: Magaña-Valencia,Fabián; Núñez-Domínguez,Rafael; Ramírez-Valverde,Rodolfo; Rodríguez-Almeida,Felipe A.
El propósito de este estudio fue comparar los principales métodos pata estimar la conectividad entre grupos contemporáneos (GC) en una población simulada, considerando una misma estructura de datos. Se simuló una población de 37 bovinos, de los cuales 15 tuvieron registros de peso al destete en uno de tres GC, en siete escenarios con diferente grado y tipo de conectividad (directa e indirecta). En cada escenario se realizaron contrastes entre los GC y se determinaron sus conectividades con 10 métodos cuantitativos. Los criterios para comparar los métodos fueron: capacidad para identificar GC desconectados, y conectados directa e indirectamente; y consistencia, definida como la relación entre el grado de conectividad obtenida y la simulada al aumentar...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Métodos de conectividad genética; Evaluación genética; Modelo animal; Simulación.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000800004

Análisis de la producción agrícola del DDR189 de la región semiárida en Zacatecas, México
Provedor de dados: 115
Autores: Pineda-Martínez,Luis F.; Echavarría-Chairez,Francisco Gpe.; Bustamante-Wilson,Juan G.; Badillo-Almaraz,Luis J.
Las condiciones de aridez de la región centro-norte de México limitan la producción agrícola y pecuaria, ya que la disponibilidad de agua está en función de la cantidad, distribución espacial y temporal de la precipitación. El objetivo de este estudio fue analizar la sostenibilidad de los sistemas de producción agrícolas con dos índices que sirven para evaluar el estado del agrosistema en dos ejes principales: sostenibilidad productiva (As) y suficiencia alimentaria (Aa). El estudio se realizó para el distrito de desarrollo rural DDR189, en el extremo oriental del estado de Zacatecas, incluye los municipios de Calera, Enrique Estrada, Guadalupe, Morelos, Pánuco, Vetagrande, Trancoso, Villa de Cos y Zacatecas. El principal cultivo de esta región es el...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Índice de sostenibilidad; Suficiencia alimentaria; Producción agrícola; Consumo.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000200007

Actividad antifúngica de extractos crudos de Bacillus subtilis contra fitopatógenos de soja (Glycine max) y efecto de su coinoculación con Bradyrhizobium japonicum
Provedor de dados: 115
Autores: Sarti,Gabriela C.; Miyazaki,Silvia S.
Entre los microorganismos causantes de enfermedades pre y post cosecha en los cultivos de soja (Glycine max) están las especies fúngicas Fusarium solani y Pythium sp. Cuatro cepas del género Bacillus (B. subtilis ATCC6633, B. amylolyticus, B. subtilis var. natto, B. subtilis var. natto domesticado) se probaron para evaluar su respuesta inhibitoria en los hongos fitopatógenos mencionados. Los tratamientos de inoculación fueron: 1) semillas inoculadas con Bradyrhizobium japonicum y 2) semillas coinoculadas con B. japonicum y B. subtilis. Las plantas crecieron en cámara de cultivo termos-tatizada a 30 ±1 °C, humedad relativa 60 % y fotoperíodo 16/8 luz-oscuridad durante 35 d. Los datos se analizaron mediante ANDEVA y las medias se compararon con la prueba de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacillus subtilis; Fusarium solani; Pythium; Glycine max.; Antifúngico; Coinoculación.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000400006

Comparación entre un modelo hidrodinámico completo y un modelo hidrológico en riego por melgas
Provedor de dados: 115
Autores: Castanedo,Vladimir; Saucedo,Heber; Fuentes,Carlos.
La práctica del riego por gravedad hace necesario disponer de un criterio para el diseño de riego por gravedad, para conseguir un manejo más eficiente del agua en la producción agrícola. Por tanto, se presenta una comparación entre el modelo hidrodinámico completo y el modelo hidrológico en riego por melgas. Para reducir las variaciones, originadas por diferencias en la lámina infiltrada, obtenidas con las ecuaciones de Green-Ampt y de Richards utilizadas en los modelos hidrológico e hidrodinámico completo, se realizó el ajuste del parámetro de succión en el frente de humedecimiento de la ecuación de Green-Ampt; con ello se reproduce el cambio de la lámina infiltrada obtenida con la ecuación de Richards. La comparación se efectuó a partir del análisis de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Modelo hidrodinámico completo; Modelo hidrológico; Riego por melgas.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000300001

Influencia de la evaporación en el crecimiento forestal
Provedor de dados: 115
Autores: Pompa-García,Marín; Rodríguez-Flores,Felipa J.; Aguirre-Salado,Carlos A.; Miranda-Aragón,Liliana.
El objetivo de este estudio fue modelar la dinámica anual de la evaporación (E) durante el crecimiento radial de Pinus cooperi Blanco, con importancia económica y ecológica alta en el norte de México. Se usaron datos dendrocronológicos y se identificó un modelo que los relacionara con registros instrumentales de E para el período de 1964 a 2010. Los análisis de correlación y regresión mostraron que E afecta negativamente el crecimiento durante los meses previos a la estación de crecimiento y durante el verano del año de crecimiento (junio y julio). E es una variable significativa que permite explicar el estrés por deficiencia de humedad y puede tener implicaciones en el manejo de P. cooperi ante variaciones climáticas.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dendrocronología; Incremento radial; Relaciones clima-árbol.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000800007

El tipo de boquilla no altera la efectividad de los herbicidas prosulfuron, bromoxinil y 2,4,-D
Provedor de dados: 115
Autores: Rosales-Robles,Enrique; Sánchez-de la Cruz,Ricardo; Rodríguez-del Bosque,L. Ángel.
Un problema común en el norte de Tamaulipas es la deriva de herbicidas aplicados en sorgo para grano [Sorghum bicolor (L.) Moench] hacia áreas no consideradas, por la aspersión a causa del viento. Esto reduce la calidad de la aspersión y ocasiona daños a cultivos susceptibles a esos herbicidas. En experimentos de campo conducidos de 2006 a 2008 se evaluó el efecto de los tipos de boquillas: abanico plano convencional, anti-deriva de pre-orificio y anti-deriva de inducción de aire, en la efectividad de los herbicidas prosulfuron, bromoxinil y 2,4-D, usados para controlar malezas de hoja ancha en sorgo para grano. No hubo efectos significativos en la acción de los herbicidas por el tipo de boquilla. El prosulfuron (17 g ha-1) mostró control superior (97 %)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amaranthus palmeri; Boquillas anti-deriva; Helianthus annuus; Herbicidas; Solanum elaeagnifolium; Sorgo.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000300004

Simulación del rendimiento de maíz (Zea mays L.) en el norte de Sinaloa usando el modelo AquaCrop
Provedor de dados: 115
Autores: Flores-Gallardo,Hilario; Ojeda-Bustamante,Waldo; Flores-Magdaleno,Héctor; Sifuentes-Ibarra,Ernesto; Mejía-Saénz,Enrique.
La intensificación de la variabilidad climática ha generado incertidumbre en los volúmenes de agua disponible en varias zonas de riego de México, ocasionan inestabilidad en la productividad del cultivo de maíz (Zea mays L.). Los modelos calibrados de simulación biológica son una herramienta computacional viable para estudiar el comportamiento de los cultivos en condiciones climáticas y escenarios de manejo agronómico e hídrico diferentes. En la presente investigación se calibró y validó el modelo AquaCrop para simular el desarrollo del cultivo de maíz en el norte de Sinaloa, México, con tres condiciones de disponibilidad hídrica: riego total (RT) y riego deficitario (80 % y 60 % respecto a RT). Para calibrar y validar el modelo se compararon datos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biomasa; Requerimientos hídricos; Variabilidad climática.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000400004

Parámetros poblacionales de Tetranychus merganser Boudreaux (Acari: Tetranychidae) en papayo (Carica papaya L.) a diferentes temperaturas
Provedor de dados: 115
Autores: Reyes-Pérez,Noel; Villanueva-Jiménez,Juan A.; de la Cruz Vargas-Mendoza,Mónica; Cabrera-Mireles,Héctor; Otero-Colina,Gabriel.
El ácaro Tetranychus merganser es una de las especies que causa mayor daño económico en la zona productora de papayo (Carica papaya) del estado de Veracruz, México. Por tanto, se requiere conocer aspectos de su biología para tomar mejores decisiones de su manejo. Se obtuvo una colonia de ácaros a partir de una hembra recolectada en el municipio de Manlio F. Altamirano, y se incrementó la población en invernadero sobre hojas de frijol (Phaseolus vulgaris). El objetivo fue evaluar la influencia de la temperatura en los parámetros poblacionales de esta especie y sobre la duración de sus fases de desarrollo. Para ello se iniciaron cohortes desde huevecillos y expuestas a las siguientes condiciones: temperaturas constantes (19, 23, 27, 31, 33 y 35 °C); 60±2 %...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ácaro; Carica papaya; Phaseolus vulgaris; Tabla de vida; Tasa de desarrollo; Tetranychus merganser.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000200004

Lipophilic constituents and some biological activities of hexanic extracts from Zaluzania montagnifolia, (SCH. BIP.) SCH. BIP. (Asteraceae)
Provedor de dados: 115
Autores: Villa-Ruano,Nemesio; Pacheco-Hernández,Yesenia; Lozoya-Gloria,Edmundo; Rubio-Rosas,Efraín; Ruiz-González,Nancy; Martínez-Orea,Yuriana; Cruz-Duran,Ramiro; Ramirez-Garcia,S. Alberto; Ramón-Canúl,L. Guadalupe.
Zaluzania montagnifolia, an antidiabetic and abortive shrub 1 to 3 m high, grows actively in xeric scrublands in some states of México. Zulazanins and some flavonoids are the foremost constituents of the polar extracts in this species; however, there is no available information about the lipophilic compounds from non-polar extracts. The objective of this study was to describe the gas chromatography-mass spectrometry (GC-MS) profile of hexanic preparations, exclusivelly with dissolve lipophilic molecules, in order to sustain the empirical uses and the new biological activities reported in this study for the plant. These preparations were obtained from flowers, leaves and roots of Z. montagnifolia which were collected in Oaxaca, México, in October 2011. In...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zaluzania montagnifolia; Grandiflorenic acid; Ent-kaurenoic acid; VOC's; Biological activities.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000400003

Efecto de las aguas residuales tratadas sobre el crecimiento, fotosíntesis y rendimiento en Vides Tempranillo (Vitis vinifera) en Baja California, México
Provedor de dados: 115
Autores: Acosta-Zamorano,Dinora; Macías-Carranza,Víctor; Mendoza-Espinosa,Leopoldo; Cabello-Pasini,Alejandro.
Baja California es una zona semidesértica donde la agricultura, incluyendo la viticultura, está limitada por la disponibilidad de agua. Ensenada es una ciudad adyacente a la zona viticultural donde 100 % de las aguas de drenaje son tratadas, no son reutilizadas y se vierten al mar. Por tanto, el objetivo de este estudio fue evaluar el efecto de las aguas residuales tratadas (ART) sobre el crecimiento, la fotosíntesis y el rendimiento de vid (Vitis vinifera var. Tempranillo) en el Valle de Guadalupe, México, durante dos años. Un viñedo establecido fue irrigado con 10 a 20 L semana -1 de ART de la planta de tratamiento de El Sauzal, como factor experimental, y agua del acuífero Valle de Guadalupe como testigo. Las ART y el agua del acuífero se analizaron...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agua residual tratada; Viticultura; Crecimiento.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000800002

Ajuste de modelos no lineales y estimación de parámetros de crecimiento en bovinos tropicarne
Provedor de dados: 115
Autores: Domínguez-Viveros,Joel; Rodríguez-Almeida,F. Alonso; Núñez-Domínguez,Rafael; Ramírez-Valverde,Rodolfo; Ortega-Gutiérrez,J. Ángel; Ruiz-Flores,Agustín.
El análisis del crecimiento con modelos de regresión no lineal (MNL) permite derivar parámetros (PC) e indicadores (IC) de crecimiento bajo condiciones específicas de producción que pueden ser considerados en los programas de mejoramiento genético. Los objetivos de este estudio fueron seleccionar y ajustar un MNL al crecimiento de bovinos Tropicarne criados en la vertiente del Golfo de México. Los MNL evaluados fueron Brody, Logístico, Bertalanffy y Gompertz. La información de crecimiento analizada correspondió a 12890 pesos mensuales, del nacimiento a los 24 meses de edad de 1787 animales. Los PC estimados fueron peso adulto (PAD) y tasa de madurez (TM); así como los IC, edad (EPI) y peso al punto de inflexión (PPI), edad al 50 % de madurez (E50M) y...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Selección modelos; Brody; Bertalanffy; Bovinos trópico; Curva crecimiento.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000100003

Identificación e incidencia de tres hongos fitopatógenos, de reporte nuevo, en avena (Avena sativa L.) en la meseta central de México
Provedor de dados: 115
Autores: García-León,Elizabeth; Leyva-Mir,S. Gerardo; Villaseñor-Mir,H. Eduardo; Rodríguez-García,M. Florencia; Tovar-Pedraza,J. Manuel.
La foya del tallo y la roya de la corona en el cultivo de avena (Avena sativa L.) son las enfermedades más destructivas en casi todo el mundo. Además, aumenta la incidencia de las enfermedades foliares causadas por un complejo de hongos patógenos. Durante los ciclos agrícolas primavera-verano de 2009 y 2010, síntomas severos de tizones foliares se observaron en lotes comerciales sembrados con avena en los estados de Hidalgo, Tlaxcala, Puebla, Morelos, Estado de México y Distrito Federal, México. Los objetivos de este estudio fueron identificar los agentes causales de los tizones foliares de la avena, así como determinar su incidencia y distribución en los valles altos de la Meseta Central de México. Hojas con síntomas de tizón foliar se recolectaron de 63...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avena sativa; Alternaria alternata; Bipolaris victoriae; Bipolaris sorokiniana; Cochliobolus.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000800006

Estimación de parámetros para un modelo de crecimiento de cultivos usando algoritmos evolutivos y bio-inspirados
Provedor de dados: 115
Autores: Trejo-Zúñiga,E. César; López-Cruz,I. Lorenzo; Ruíz-García,Agustín.
La calibración de modelos dinámicos para crecimiento y desarrollo de cultivos con rangos de parámetros, genera estimaciones imprecisas de estos y predicciones erróneas del modelo cuando se usa estimación por mínimos cuadrados o máxima verosimilitud. El presente estudio muestra el uso de métodos globales de optimización para resolver este problema. Se presenta una comparación del desempeño de un algoritmo evolutivo (Evolución Diferencial, DE) y dos bio-inspirados: Búsqueda Cuco (CS) y Búsqueda Cuco Modificado (MCS). El problema prueba fue estimar los 25 parámetros del modelo para crecimiento potencial de cultivos SUCROS (a Simple and Universal CROp growth Simulator). Los datos se obtuvieron de un experimento de crecimiento de un cultivo de tomate de cáscala...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Estimación de parámetros; Evolución Diferencial; Búsqueda Cuco; SUCROS.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000700004

Respuesta reproductiva de ovejas de pelo sincronizadas con progesterona o prostaglandinas
Provedor de dados: 115
Autores: Arroyo-Ledezma,Jaime; De La Torre-Barrera,Jannette; Ávila-Serrano,N. Ysac.
La sincronización ajusta los estros a tiempos específicos y permite usar tecnologías reproductivas. El objetivo de este estudio fue evaluar la respuesta reproductiva de 30 ovejas de pelo sincronizadas con progesterona (P4) o prostaglandinas. Las ovejas de pelo eran 5/8 Pelibuey x 2/8 Black Belly x 1/8 Dorper, de 3.5 a 4.0 años de edad, con peso promedio de 37.8 ±3.0 kg; el último parto fue 8 meses previos al experimento. Los tratamientos fueron; 1) aplicación por 11 d de 300 mg de P4 impregnada en un dispositivo vaginal de liberación controlada (CIDR) + 400 UI IM de gonadotropina coriónica equina (eCG) al retiro del CIDR; 2) dos dosis de 0.075 mg de prostaglandina F2a (cloprostenol) con intervalo de 11 d. El diseño experimental fue completamente al azar...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cloprostenol; PGF2a; CIDR + eCG; Ovinos de pelo; Sincronización de estros; Trópico.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000700003

Symptoms and sensitivity to chilling injury of pitahaya (Hylocereus undatus (haw.) britton &amp;amp; rose) fruits during postharvest
Provedor de dados: 115
Autores: Balois-Morales,Rosendo; Peña-Valdivia,Cecilia B.; Arroyo-Peña,V. Baruch.
Dragon fruit or pitahaya (Hylocereus undatus (Haw.) Britton &amp;amp; Rose) is an exquisite and exotic fruit with attractive aroma and flavor, and a characteristic red-skinned color. Its production and supply for regional and foreign markets is limited to its storage life. The objective of this study was to evaluate physiological alterations and sensitivity to chilling injuries during postharvest of pitahaya. Fruits harvested at the Tehuacán Valley, Puebla, México, were stored at three postharvest temperatures: 3, 7, and 11 ±1 °C, for 7, 14, and 21 d and under these conditions plus a 4 d period at 22 ±1 °C. Evaluated fruits were then contrasted with fresh fruit (control 1), and non-cold stored fruits maintained 4 d at 22 °C (control 2). Variables were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acidity; Color; Firmness; Total soluble solids; Vitamin C.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000800005

Optimización de la síntesis de biodiésel a partir de aceite crudo de Palma Africana (Elaeis guineensis Jacq)
Provedor de dados: 115
Autores: Guerrero-Peña,Armando; Anguebes-Franseschi,Francisco; Castelán-Estrada,Mepivoseth; Morales-Ramos,Victorino; Córdova-Quiroz,Atl V; Zavala-Loría,José C; Bolaños-Reinoso,Eusebio.
La palma africana (Elaeis guineensis Jacq.) es un cultivo usado para producir aceite y ha generado interés para obtener combustibles alternativos al petróleo. El objetivo de este estudio fue determinar las condiciones óptimas de reacción de la metanólisis del aceite crudo de palma africana (ACP), para sintetizar biodiésel en condiciones de laboratorio. Un diseño compuesto central rotatorio y la metodología de superficie de respuesta se usaron para evaluar la eficiencia del proceso. Las variables estudiadas fueron concentración de metanol (entre 40 y 100 % p/p), concentración de catalizador (2 a 4 % p/p), tiempo (40 a 160 min) y temperatura de reacción (50 a 66 °C). Las concentraciones de metanol y de catalizador y el tiempo de reacción tuvieron un efecto...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Catálisis alcalina; Elaeis guineensis Jacq; Metanólisis; Optimización de proceso; Superficie de respuesta.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000700002

Desarrollo y evaluación de un prototipo descascarador de frutos de Ricinus communis L.
Provedor de dados: 115
Autores: Cabral-de França,Pablo R.; Silva,Odilon R. Ribeiro-Ferreira da; Cardoso-Almeida,Francisco de A.; Ferreira-Jerônimo,Jeane; Cárdenas-Olivier,Nelson.
La higuerilla o ricino (Ricinus communis L.) es cultivada abundantemente en el nordeste de Brasil, la mayoría por pequeños agricultores. Sin embargo, la falta de máquinas específicas para ayudar en el procesamiento y que sean accesibles a los productores con poder adquisitivo menor, es un obstáculo para la expansión del cultivo. El desarrollo de máquinas pequeñas beneficiaría en gran medida a los agricultores de este sistema de producción e incrementaría el valor agregado al producto final. Así, el objetivo de este estudio fue desarrollar y evaluar el desempeño de una máquina para descascarar los frutos de la higuerilla, variedad BRS Energía, y establecer una metodología para su operación. El descascarado fue realizado con dos discos de acero revestidos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mecanización; Agricultura familiar; Procesamiento.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000400005

Diversidad genética del tizón tardío de la papa [Phytophthora infestans (Mont) de Bary] en Chapingo, México
Provedor de dados: 115
Autores: Alarcón-Rodríguez,Norma M.; Lozoya-Saldaña,Héctor; Valadez-Moctezuma,Ernestina; García-Mateos,Ma. del Rosario; Colinas-León,María T.
En el altiplano central mexicano, el tizón tardío (Phytophthora infestans) presenta alta incidencia, severidad y diversidad genotípica, debido en parte a sus progenies derivadas sexualmente. El objetivo de este estudio fue evaluar el tipo de apareamiento, el perfil aloenzimático y el haplotipo mitocondrial de 88 aislamientos de P. infestans obtenidos de lesiones simples al azar de clones de papa en el campo agrícola experimental de la Universidad Autónoma Chapingo, México, durante 2008, 2009 y 2010. Predominó la población homotálica (A1/ A2), con una frecuencia de 0.761. Las frecuencias de los tipos A1 y A2 fueron 0.125 y 0.114. Se identificaron 25 genotipos de aloenzimas, con los alelos 100 y 122 para las peptidasas (Pep), y 86, 90, 100, 111 y 122 para...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Solanum tuberosum L.; Haplotipo mitocondrial; Isoenzimas; Compatibilidad.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000600006

Variables fisicoquímicas y calidad de fritura de clones de papa desarrollados para los Valles Altos de México
Provedor de dados: 115
Autores: Vázquez-Carrillo,M. Gricelda; Santiago-Ramos,David; Ybarra-Moncada,M. Carmen; Rubio-Covarrubias,O. Ángel; Cadena-Hinojosa,M. Armando.
Los cultivares de papas producidos en lugares altos y fríos, como en la zona Centro de México, generalmente tienen contenidos de azúcares reductores altos, que impiden su uso para la elaboración de hojuelas fritas. El objetivo de esta investigación fue determinar las variables fisicoquímicos y de calidad para fritura de 35 clones de papa desarrollados para los Valles Altos de México y cuatro cultivares comerciales (Alpha, Lupita, Malinche y Montserrat) producidos en el ciclo primavera-verano 2009 a 3500 msnm en Raíces, Zinacantepec, Estado de México. El diseño experimental fue completamente al azar. En tubérculos se evaluó peso específico, materia seca, almidón, azúcares reductores y color de pulpa. En frituras se determinó rendimiento, color y...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Azúcares reductores; Calidad de fritura; Color; Solanum tuberosum L.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000100005

Ecological features of titica vine (Heteropsis flexuosa (Kunth) GS Bunting) in Rondônia State, Northwest Brazilian Amazon
Provedor de dados: 42
Autores: GAMA,MICHELLINY M. BENTES; VIEIRA,ABADIO H.; ROCHA,RODRIGO B.
The aim of this study was to characterize the forest structure with H. flexuosa in Rondônia State, as a first step in developing sustainable harvest and conservation guidelines for the species. Crown attributes, total height (m) and diameter at breast height ≥ 10 (cm) of trees and palms with H. flexuosa were evaluated in three permanent plots (100 m x 150 m each) randomized in 219 ha. A total of 22 botanical families hosted H. flexuosa. It was not observed any specific preference for the species standing up itself. Nevertheless it was frequently associated to Burseraceae, Leguminosae, Sapotaceae, Annonaceae, Chrysobalanaceae, Apocynaceae, Moraceae and Myristicaceae and species with thick bark like Schweilera coriacea, Protium sp. and Licania membranaceae....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Non-timber forest product; Ecology; Plant fibers; Habitat preference; Multiple-use forest management.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000301117

Biochemical and hematological analysis in acute intermittent porphyria (AIP): a case report
Provedor de dados: 42
Autores: SANTOS,ANNA R.R. DOS; ALBUQUERQUE,RAFAELA R. DE; DORIQUI,MARIA J.R.; COSTA,GRACIOMAR C.; SANTOS,ANA PAULA S.A. DOS.
Acute intermittent porphyria is the most common acute porphyria caused by a decrease in hepatic porphobilinogen deaminase activity, resulting in an accumulation of delta-aminolevulinic acid and porphobilinogen. This disease shows nonspecific signs and symptoms that can be confused with other diseases, thereby making the diagnosis difficult. We report a case of acute intermittent porphyria, reviewing clinical and laboratory aspects, highlighting the hematological and biochemical parameters during and after the crisis. A female patient, aged 28 years, suffered two crises, both presenting gastrointestinal disorders. The second presented neuropsychiatric symptoms. The analysis of hematological and biochemical parameters during the second crisis showed anemia,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acute intermittent porphyria; Anemia; C-reactive protein; Hyponatremia.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000301207

Nuclear entropy, angular second moment, variance and texture correlation of thymus cortical and medullar lymphocytes: Grey level co-occurrence matrix analysis
Provedor de dados: 42
Autores: PANTIC,IGOR; PANTIC,SENKA; PAUNOVIC,JOVANA; PEROVIC,MILAN.
Grey level co-occurrence matrix analysis (GLCM) is a well-known mathematical method for quantification of cell and tissue textural properties, such as homogeneity, complexity and level of disorder. Recently, it was demonstrated that this method is capable of evaluating fine structural changes in nuclear structure that otherwise are undetectable during standard microscopy analysis. In this article, we present the results indicating that entropy, angular second moment, variance, and texture correlation of lymphocyte nuclear structure determined by GLCM method are different in thymus cortex when compared to medulla. A total of 300 thymus lymphocyte nuclei from 10 one-month-old mice were analyzed: 150 nuclei from cortex and 150 nuclei from medullar regions of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Texture analysis; GLCM matrix; CD4; CD8; Gene.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000301063

Agro-economic yield of taro clones in Brazil, propagated with different types of cuttings, in three crop seasons
Provedor de dados: 42
Autores: HEREDIA ZARATE,NESTOR A.; VIEIRA,MARIA C.; TABALDI,LUCIANE A.; HEREDIA VIEIRA,DANILO A.; JORGE,ROSIMEIRE P.G.; SALLES,NATALIA A.
The experimental studies were conducted in 2007-2008, 2008-2009 and 2009-2010 crop seasons, in order to know the agro-economic yield of 'Chinês' and "Macaquinho" taro clones, propagated using huge, extra, large, medium, small and tiny cormels. The harvest was done on average on 202 days after planting, in three crop seasons. Based on the joint analysis of variance carried out, it was observed that taro clones showed significant differences in the yield of fresh and dry weight of leaves, cormels, and commercial and non-commercial comels; besides, there were significant differences in yield of a crop season to another and the size of the cuttings induced significant differences in yield. In the conditions that the experiments were conducted, and considering...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Colocasia esculenta; Rhizome; Production; Income.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200785

Evaluation of the mutagenic effect of the iodinated contrast medium Urografina® 292 using the micronucleus test in mouse bone marrow cells
Provedor de dados: 42
Autores: BELLE,MONICA B.B.; LEFFA,DANIELA D.; MAZZORANA,DALIANE; ANDRADE,VANESSA M. DE.
Contrast media (CM) are frequently used in diagnostic radiology and in radiotherapy as a diagnostic tool and in treatment planning. Previous studies have demonstrated that these compounds induce chromosomal aberrations. This study evaluates the mutagenic effects induced by the contrast medium Urografina® 292 (meglumine amidotrizoate and sodium-ionic dimmer) in bone marrow cells (BMC) of mice in vivo. Micronuclei assay was performed in BMC of CF-1 mice injected with CM 1.5 and 3.0 mL/kg intravenous doses and 1.0, 2.0, 3.0 mL/kg intraperitoneal doses. The animals were beheaded 24 h after treatment by cervical dislocation, and femur BMC from each animal were used in the micronucleus test. The group treated with the highest intravenous injection of Urografina®...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chromosomes; Contrast medium; Micronuclei; Urografina® 292.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200737

Chemical study and larvicidal activity against Aedes aegypti of essential oil of Piper aduncum L. (Piperaceae)
Provedor de dados: 42
Autores: OLIVEIRA,GISELE L.; CARDOSO,SHEILA K.; LARA JÚNIOR,CéLIO R.; VIEIRA,THALLYTA M.; GUIMARãES,ELSIE F.; FIGUEIREDO,LOURDES S.; MARTINS,ERNANE R.; MOREIRA,DAVYSON L.; KAPLAN,MARIA AUXILIADORA C.
ABSTRACTPiper aduncum L. is used in folk medicine to treat respiratory and inflammatory diseases. The aim of this study was to analyze the essential oil from leaves ofP. aduncum collected in the Brazilian Cerrado, North of Minas Gerais, as well as to evaluate the larvicidal activity of this oil and of its major constituent. The essential oil was analyzed by gas chromatography coupled to flame ionization detector and gas chromatography coupled to mass spectrometry that allowed characterizing 23 compounds (monoterpenes: 90.4%; sesquiterpenes: 7.0%). The major component was 1,8-cineole (53.9%). This oil showed to be very different from those obtained from the same species. Larvae of A. aegypti were exposed to different concentrations of the essential oil and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Piper aduncum Aedes aegypti larvicidal activity dengue 1; 8-cineole GC-MS.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401227

A closer look at the Impact Factor (JCR 2012): problems, concerns and actions needed
Provedor de dados: 42
Autores: KELLNER,ALEXANDER W.A.; AZEVEDO,RICARDO A.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000300859

Impacts of hydroelectric dams on alluvial riparian plant communities in eastern Brazilian Amazonian
Provedor de dados: 42
Autores: FERREIRA,LEANDRO VALLE; CUNHA,DENISE A.; CHAVES,PRISCILLA P.; MATOS,DARLEY C.L.; PAROLIN,PIA.
The major rivers of the Amazon River basin and their biota are threatened by the planned construction of large hydroelectric dams that are expected to have strong impacts on floodplain plant communities. The present study presents forest inventories from three floodplain sites colonized by alluvial riparian vegetation in the Tapajós, Xingu and Tocantins River basins in eastern Amazonian. Results indicate that tree species of the highly specialized alluvial riparian vegetation are clearly distinct among the three river basins, although they are not very distinct from each other and environmental constraints are very similar. With only 6 of 74 species occurring in all three inventories, most tree and shrub species are restricted to only one of the rivers,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazon River basin; Biodiversity loss; Floodplain forest; Hydroelectric dams.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000301013

Centesimal composition and physical-chemistry analysis of the edible mushroom Lentinus strigosus occurring in the Brazilian Amazon
Provedor de dados: 42
Autores: SALES-CAMPOS,CECI; ARAUJO,LIDIA M.; MINHONI,MARLI T.A.; ANDRADE,MEIRE C.N.
The centesimal composition and the physical and chemical analyses of Lentinus strigosus, an edible mushroom occurring in the Brazilian Amazon and produced in alternative substrates based on wood and agroindustrial residues, were evaluated. For this purpose, the C, N, pH, soluble solids, water activity, protein, lipids, total fiber, ash, carbohydrate, and energy levels were determined. The substrates were formulated from Simarouba amara Aubl. (“marupá”), Ochroma piramidale Cav. Ex. Lam. (“pau-de-balsa”) and Anacardium giganteum (“cajuí”) sawdust and Bactris gasipaes Kunth (“pupunheira”) stipe and Saccharum officinarum (sugar cane bagasse). The results indicated that the nutritional composition of L. strigosus varied with the substrate of cultivation; the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Edible mushroom; Nutritional value; Minerals; Protein; Fibers.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401537

Feeding ecology of the Neotropical otter Lontra longicaudis in the Lower Arroio Grande River, southern Brazil
Provedor de dados: 42
Autores: Souza,Kleisson S.; Bastazini,Vinicius A.G.; Colares,Elton P.
The present study was based on the analysis of spraints (n = 294) collected between December 2005 and November 2007. The importance of each type of prey was determined by absolute and relative frequency. Niche breadth was also estimated. The results were reported as mean (± SD) of relative frequencies. Fish were the main prey found in spraints (57.8 ± 7.0%). Fish from Callichthyidae family were the main prey, followed by Cichlidae, the species Hoplias malabaricus and the family Characidae. The frequencies of other fish and taxa were lower than 13.9% (absolute frequency) and 5.6% (relative frequency). Despite significant seasonal variations, (P = 0.001), niche breadth values were low in all seasons (0.39 ± 0.11). Therefore, Lontra longicaudis presented a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diet; Neotropical otter; Niche breadth; Seazonal; Southern Brazil.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000100285

Evaluation of morpho-anatomical and chemical differences between varieties of the medicinal plant Casearia sylvestris Swartz
Provedor de dados: 42
Autores: CLAUDINO,JOSIANE C.; SACRAMENTO,LUIS V.S. DO; KOCH,INGRID; SANTOS,HELEN A.; CAVALHEIRO,ALBERTO J.; TININIS,ARISTEU G.; SANTOS,ANDRé G. DOS.
Casearia sylvestris Swartz (Salicaceae) has been used in traditional medicine and its leaf extracts have been exhibited important pharmacological activities. The species presents morphological, chemical and genetic variation. Two varieties are considered due external morphological differences: C. sylvestris var. sylvestris and var. lingua. There are difficulties in definition of these varieties. The objective of this work is to evaluate chemical and morpho-anatomical differences between C. sylvestris varieties that can be applied in their distinction for pharmaceutical or botanical purposes. Transverse and paradermic sections of leaves were prepared for morpho-anatomical, histochemical and quantitative microscopy (stomatal and palisade index) analyses....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Casearia sylvestris; Chromatography; Diterpenes; Morpho-anatomy.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401253

Flavonoids from leaves of Derris urucu: assessment of potential effects on seed germination and development of weeds
Provedor de dados: 42
Autores: SILVA,EWERTON A.S. DA; LÔBO,LÍVIA T.; SILVA,GEILSON A. DA; SOUZA FILHO,ANTONIO PEDRO DA S.; SILVA,MILTON N. DA; ARRUDA,ALBERTO C.; GUILHON,GISELLE M.S.P.; SANTOS,LOURIVALDO S.; ARRUDA,MARA S.P.
In some previous studies, we described the isolation of nine compounds from leaves of Derris urucu, a species found widely in the Amazon rainforest, identified as five stilbenes and four dihydroflavonols. In this work, three of these dihydroflavonols [urucuol A (1), urucuol B (2) and isotirumalin (3)] were evaluated to identify their potential as allelochemicals, and we are also reporting the isolation and structural determination of a new flavonoid [5,3′-dihydroxy-4′-methoxy-(7,6:5″,6″)-2″,2″-dimethylpyranoflavanone (4)]. We investigated the effects of the dihydroflavonols 1-3 on seed germination and radicle and hypocotyl growth of the weed Mimosa pudica, using solutions at 150 mg.L–1. Urucuol B, alone, was the substance with the greatest potential to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Derris urucu; Flavonoids; Allelopathy; Development of weeds; Seed germination.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000300881

Antimutagenic and antirecombinagenic activities of noni fruit juice in somatic cells of Drosophila melanogaster
Provedor de dados: 42
Autores: FRANCHI,LEONARDO P.; GUIMARAES,NILZA N.; ANDRADE,LAISE R. DE; ANDRADE,HELOISA H.R. DE; LEHMANN,MAURICIO; DIHL,RAFAEL R.; CUNHA,KENYA S.
Noni, a Hawaiian name for the fruit of Morinda citrifolia L., is a traditional medicinal plant from Polynesia widely used for the treatment of many diseases including arthritis, diabetes, asthma, hypertension and cancer. Here, a commercial noni juice (TNJ) was evaluated for its protective activities against the lesions induced by mitomycin C (MMC) and doxorrubicin (DXR) using the Somatic Mutation and Recombination Test (SMART) in Drosophila melanogaster. Three-day-old larvae, trans-heterozygous for two genetic markers (mwh and flr3      ), were co-treated with TNJ plus MMC or DXR. We have observed a reduction in genotoxic effects of MMC and DXR caused by the juice. TNJ provoked a marked decrease in all kinds of MMC- and DXR-induced mutant spots, mainly due...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antigenotoxicity; Doxorrubicin; Mitomycin C; SMART; Noni juice.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200585

Distributional patterns of herbivore megamammals during the Late Pleistocene of South America
Provedor de dados: 42
Autores: GALLO,VALERIA; AVILLA,LEONARDO S.; PEREIRA,RODRIGO C.L.; ABSOLON,BRUNO A.
The geographic distribution of 27 species of the South American megafauna of herbivore mammals during the Late Pleistocene was analyzed in order to identify their distributional patterns. The distribution of the species was studied using the panbiogeographical method of track analysis. Six generalized tracks (GTs) and two biogeographic nodes were obtained. The GTs did not completely superpose with the areas of open savanna present in Pleistocene, nor with the biotic tracks of some arthropods typical of arid climate, indicating that these animals avoided arid environment. Overall, the GTs coincided with some biogeographic provinces defined on the basis of living taxa, indicating that certain current distributional patterns already existed in Pleistocene....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Distributional patterns; Historical Biogeography; Panbiogeography; Megafauna; Late Pleistocene; South America.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200533

Growth and hematology of juvenile pacu Piaractus mesopotamicus (Holmberg 1887) fed with increasing levels of vitamin E (DL-α-tocopheryl acetate)
Provedor de dados: 42
Autores: SADO,RICARDO Y.; BICUDO,ÁLVARO J.A.; CYRINO,JOSÉ E.P.
Intensive fish production systems are characterized by 100% artificial feeding, so any dietary imbalances or deficiencies may lead to diseases outbreaks and economic losses. This study was set out to determine the effects of increasing levels of dietary vitamin E on growth and hematology of juvenile pacu. Fishes were fed for 90 days, twice a day until apparent satiation with semi-purified diets containing 0.0; 25; 50; 150; 300 or 600 mg.kg−1 diet DL-α-tocopheryl acetate in a completely randomized design trial (n=4); biometrical and hematological data were collected and analyzed. Fishes fed with vit E diet (150 mg.kg−1) showed higher (p&lt;0.05) weight gain and specific growth. Hematocrit, erythroblast number and total plasma protein were increased...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fish nutrition; Hematology; Piaractus mesopotamicus; Vitamin E.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000100385

Treadmill exercise does not change gene expression of adrenal catecholamine biosynthetic enzymes in chronically stressed rats
Provedor de dados: 42
Autores: GAVRILOVIĆ,LJUBICA; STOJILJKOVIĆ,VESNA; KASAPOVIĆ,JELENA; POPOVIĆ,NATAŠA; PAJOVIĆ,SNEŽANA B.; DRONJAK,SLADJANA.
ABSTRACTChronic isolation of adult animals represents a form of psychological stress that produces sympatho-adrenomedullar activation. Exercise training acts as an important modulator of sympatho-adrenomedullary system. This study aimed to investigate physical exercise-related changes in gene expression of catecholamine biosynthetic enzymes (tyrosine hydroxylase, dopamine-ß-hydroxylase and phenylethanolamine N-methyltransferase) and cyclic adenosine monophosphate response element-binding (CREB) in the adrenal medulla, concentrations of catecholamines and corticosterone (CORT) in the plasma and the weight of adrenal glands of chronically psychosocially stressed adult rats exposed daily to 20 min treadmill running for 12 weeks. Also, we examined how...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Adrenal medulla; Acute immobilization stress; Catecholamine; Chronic social isolation; Gene expression; Treadmill exercise.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000300999

A decoding method of an n length binary BCH code through (n + 1)n length binary cyclic code
Provedor de dados: 42
Autores: SHAH,TARIQ; KHAN,MUBASHAR; ANDRADE,ANTONIO A. DE.
For a given binary BCH code Cn of length n = 2s - 1 generated by a polynomial  of degree r there is no binary BCH code of length (n + 1)n generated by a generalized polynomial  of degree 2r. However, it does exist a binary cyclic code C(n+1)n of length (n + 1)n such that the binary BCH code Cn is embedded in C(n+1)n. Accordingly a high code rate is attained through a binary cyclic code C(n+1)n for a binary BCH code Cn. Furthermore, an algorithm proposed facilitates in a decoding of a binary BCH code Cn through the decoding of a binary cyclic code C(n+1)n, while the codes Cn and C(n+1)n have the same minimum hamming distance.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: BCH code; Binary cyclic code; Binary Hamming code; Decoding algorithm.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000300863

Handling sticky Resin by Stingless Bees: Adhesive Properties of Surface Structures
Provedor de dados: 42
Autores: GASTAUER,MARKUS; CAMPOS,LUCIO A.O.; WITTMANN,DIETER.
Many Stingless Bees (Hymenoptera: Meliponini) like Tetragonisca angustula collect resin to defend their nests against intruders like ants or Robber Bees. Small portions of resin are attached to intruders bodies and extremities causing their immobilization. It has been observed that resin is removed easily from the bee's mandible but adheres strongly to the intruder's cuticle. We tested the hypothesis that resin sticks lesser to the mandibles of Stingless Bees than to the surface of intruders due to special surface structures or adhesive properties of these structures. The surface structures of the mandible of T. angustula and the trochanter of Camponotus sericeiventris were studied by scanning electron microscopy. To measure adhesion properties, selected...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Measuring adhesion forces; Scanning electron microscopy; Surface properties; Cuticle; Ultrastructure.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000301189

Evaluation of wound healing and antimicrobial properties of aqueous extract from Bowdichia virgilioides stem barks in mice
Provedor de dados: 42
Autores: AGRA,ISABELA K.R.; PIRES,LUANA L.S.; CARVALHO,PAULO S.M.; SILVA-FILHO,EURÍPEDES A.; SMANIOTTO,SALETE; BARRETO,EMILIANO.
The decoction of the stem barks from Bowdichia virgilioides KUNTH is a folk remedy used to treat inflammatory disorders in Latin American and Brazil. In the present study, the wound healing activity of aqueous extract of the stem bark from B. virgilioides, called AEBv, was evaluated by the rate of healing by wound contraction and period of epithelization at different days post-wound using the wound excisional model. On day 9, the AEBv-treated animals exhibited significative reduction in the wound area when compared with controls. In wound infected with S. aureus, the AEBv significantly improved the wound contraction when compared to the saline-treated mice. The histological analysis showed that AEBv induced a collagen deposition, increase in the fibroblast...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Wound healing; Antimicrobial effect; Bowdichia virgilioides; Medicinal plant.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000300945

Efficiency of snake sampling methods in the Brazilian semiarid region
Provedor de dados: 42
Autores: Mesquita,Paulo C.M.D.; Passos,Daniel C.; Cechin,Sonia Z.
The choice of sampling methods is a crucial step in every field survey in herpetology. In countries where time and financial support are limited, the choice of the methods is critical. The methods used to sample snakes often lack objective criteria, and the traditional methods have apparently been more important when making the choice. Consequently researches using not-standardized methods are frequently found in the literature. We have compared four commonly used methods for sampling snake assemblages in a semiarid area in Brazil. We compared the efficacy of each method based on the cost-benefit regarding the number of individuals and species captured, time, and financial investment. We found that pitfall traps were the less effective method in all...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Caatinga; Comparison; Pitfall traps; Squamata; Techniques.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000301127

Effect of environmental factors on the abundance of decapod crustaceans from soft bottoms off southeastern Brazil
Provedor de dados: 42
Autores: FURLAN,MICHELE; CASTILHO,ANTONIO L.; FERNANDES-GÓES,LISSANDRA C.; FRANSOZO,VIVIAN; BERTINI,GIOVANA; COSTA,ROGéRIO C. DA.
This study investigated the importance of variations in environmental factors affecting the abundance patterns of decapods on the southeastern Brazilian coast. Sampling was carried out monthly from January 1998 through December 1999 in Ubatumirim and Mar Virado, Ubatuba region, using a commercial shrimp fishing boat equipped with double-rig nets. Six areas adjacent to rocky shores were chosen. Bottom-water samples were collected using a Nansen bottle, to measure the temperature and salinity. Sediment samples were also obtained by means of a Van Veen grab, for determination of texture and organic-matter content. The association of environmental factors with species abundance was evaluated by Canonical Correspondence Analysis (α = 0.05). Forty-one species of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Benthic species; Decapod crustaceans; Environmental factors; Habitat selection.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401345

A study of structural lineaments in Pantanal (Brazil) using remote sensing data
Provedor de dados: 42
Autores: PARANHOS FILHO,ANTONIO C.; NUMMER,ALEXIS R.; ALBREZ,EDILCE A.; RIBEIRO,ALISSON A.; MACHADO,RÔMULO.
This paper presents a study of the structural lineaments of the Pantanal extracted visually from satellite images (CBERS-2B satellite, Wide Field Imager sensor, a free image available in INTERNET) and a comparison with the structural lineaments of Precambrian and Paleozoic rocks surrounding the Cenozoic Pantanal Basin. Using a free software for satellite image analysis, the photointerpretation showed that the NS, NE and NW directions observed on the Pantanal satellite images are the same recorded in the older rocks surrounding the basin, suggesting reactivation of these basement structural directions during the Quaternary. So the Pantanal Basin has an active tectonics and its evolution seems to be linked to changes that occurred during the Andean subduction.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Free remote sensing software; Free satellite images; Structural geology; Lineaments; Photointerpretation; Pantanal.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000300913

The role of cyclooxygenase-2 on endurance exercise training in female LDL-receptor knockout ovariectomized mice
Provedor de dados: 42
Autores: OLIVEIRA,FLAVIA DE; MAIFRINO,LAURA B.M.; JESUS,GUSTAVO P.P. DE; CARVALHO,JULIANA G.; MARCHON,CLÁUDIA; RIBEIRO,DANIEL A.
Estrogen deprivation in postmenopausal women increases cardiovascular risk. Cardiovascular risk as a result of atherosclerosis is able to induce an inflammatory disease as far as cyclooxygenase-2 ( COX-2) expression. The purpose of the study was to investigate the role of COX-2 on exercise training in female mice low-density lipoprotein receptor knockout ( LDL-KO) with or without ovariectomy. A total of 15 female C57BL/6 mice and 15 female LDL-KO mice were distributed into 6 groups: sedentary control, sedentary control ovariectomized, trained control ovariectomized, LDL-KO sedentary, LDL-KO sedentary ovariectomized and LDL-KO trained ovariectomized. The ascending part of the aorta was stained with H&amp;E and COX-2 expression was assessed by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atherosclerosis; Ciclooxygenase-2; Exercise; Menopause.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000301157

Assessment of the cytotoxic, genotoxic, and antigenotoxic activities ofCeltis iguanaea (Jacq.) in mice
Provedor de dados: 42
Autores: BORGES,FLAVIO F.V.; MACHADO,THIAGO C.; CUNHA,KÊNYA S.; PEREIRA,KARLA C.; COSTA,ELSON A.; PAULA,JOSÉ R. DE; CHEN-CHEN,LEE.
Ethnobotanical surveys of Cerrado native plants show that leaves of Celtis iguanaea (Jacq.) Sargent (Cannabaceae), popularly known in Brazil as “esporão de galo”, are used in folk medicine for body pain, asthma, cramps, poor digestion, urinary infection, kidney dysfunctions, as well as a stimulant and diuretic. This work aimed at evaluating possible C. iguanaea aqueous leaf extract (CALE) cytotoxicity, genotoxicity, and antigenotoxicity using the mouse bone marrow micronucleous test. To assess CALE genotoxicity, Swiss mice were orally treated with three different extract concentrations (100, 300, and 500 mgkg−1). To evaluate its antigenotoxicity, the same doses were used simultaneously with a single i.p. dose of mitomycin C (MMC, 4mg.kg−1). The frequencies...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cytotoxicity; Genotoxicity; Mice; Medicinal plant.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000300955

Morphological deformities in the osseous structure in spotted sorubim Pseudoplatystoma coruscans (agassiz &amp;amp; spix, 1829) with vitamin c deficiency
Provedor de dados: 42
Autores: FUJIMOTO,RODRIGO Y.; SANTOS,RUDÃ F.B.; CARNEIRO,DALTON J.
Vitamin C is essential for fish diets because many species cannot syntethize it. This vitamin is needed for bone and cartilage formation. Moreover, it acts as antioxidant and improve the immunological system. The present work investigated the effects of vitamin C diet supplementation to spotted sorubim (Pseudoplatystoma coruscans) fingerlings by frequency of bone and cartilage deformation. Ascorbyl poliphosphate (AP) was used as source of vitamin C in the diets for spotted sorubim fingerlings during three months. Six diets were formulated: one diet control (0 mg/kg of vitamin C) and 500, 1,000, 1,500, 2,000 and 2,500 mg AP/kg diets. Fishes fed without vitamin C supplementation presented bone deformation in head and jaws, and fin fragilities. Thus, 500 mg...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Scurvy; Bone formation; Siluriformes; Ascorbic acid.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000100379

Are leaf physiological traits related to leaf water isotopic enrichment in restinga woody species?
Provedor de dados: 42
Autores: ROSADO,BRUNO H.P.; MATTOS,EDUARDO A. DE; STERNBERG,LEONEL DA S.L.
During plant-transpiration, water molecules having the lighter stable isotopes of oxygen and hydrogen evaporate and diffuse at a faster rate through the stomata than molecules having the heavier isotopes, which cause isotopic enrichment of leaf water. Although previous models have assumed that leaf water is well-mixed and isotopically uniform, non-uniform stomatal closure, promoting different enrichments between cells, and different pools of water within leaves, due to morpho-physiological traits, might lead to inaccuracies in isotopic models predicting leaf water enrichment. We evaluate the role of leaf morpho-physiological traits on leaf water isotopic enrichment in woody species occurring in a coastal vegetation of Brazil known asrestinga. Hydrogen and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Leaf water isotopic enrichment; Péclet effect; Restinga; Leaf morpho-physiological traits.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000301035

Polychlorinated Biphenyl (PCB) congener concentrations in aquatic birds. Case study: Ilha Grande Bay, Rio de Janeiro, Brazil
Provedor de dados: 42
Autores: FERREIRA,ALDO PACHECO.
Livers from 108 birds found prostrate or dead in Ilha Grande Bay between 2005 and 2010 were analyzed for 16 PCB congeners (IUPAC numbers 8, 18, 28, 31, 52, 77, 101, 118, 126, 128, 138, 149, 153, 169, 170, and 180). The species analyzed were Egretta caerulea(Linnaeus 1758), Nycticorax nycticorax (Linnaeus 1758),Egretta thula (Molina 1782), and Ardea cocoi(Linnaeus 1766). The analysis were performed using Origin software (7.5, 2004) with a significant level of p&lt;0.05. Data were checked for adherence to the standard assumptions of parametric tests using the Kolmogorov-Smirnov test for normality and the Levene's test for homogeneity of variances. This has revealed differences in concentration for some congeners. Results indicate relatively low PCBs...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Contamination; Ilha Grande Bay; Polychlorinated biphenyl; Risk to environment and health; Aquatic birds.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401379

Tmesiphantes hypogeussp. nov. (Araneae, Theraphosidae), the first troglobitic tarantula from Brazil
Provedor de dados: 42
Autores: Bertani,Rogério; Bichuette,Maria Elina; Pedroso,Denis R.
A new species of Tmesiphantes Simon, 1892, is described from sandstone/quartizitic caves of Chapada Diamantina, Bahia State, Brazil. This is the fifth species of the genus and the first record of a troglobitic mygalomorph in Brazil. A key is presented for all Tmesiphantes species.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cave; Mygalomorph; New species; Spider taxonomy; Tarantula.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000100235

Immature stages of Spodoptera albula (Walker) (Lepidoptera: Noctuidae): Developmental parameters and host plants
Provedor de dados: 42
Autores: MONTEZANO,DÉBORA G.; SPECHT,ALEXANDRE; BORTOLIN,TARCISO M.; FRONZA,EDEGAR; SOSA-GÓMEZ,DANIEL R.; ROQUE-SPECHT,VÂNIA F.; PEZZI,PATRÍCIA; LUZ,PRISCILA C.; BARROS,NEIVA M.
This study aimed to detail the temporal and morphological parameters of the immature stages of Spodoptera albula (Walker 1857) under controlled conditions (25 ± 1°C, 70 ± 10% RH and 14 hour photophase) and to gather information about their larval host plants. For this purpose, a new rearing method and artificial diet was employed and validated. The viability of the egg, larval, pupal and pre-pupal stages was 94.54, 97.33, 93.84 and 92.34%, respectively. The average duration of the egg, larval, pupal and pre-pupal stages was 4.14, 16.37, 1.69, and 9.34 days, respectively. During the larval stage, 80.85% of females and 93.99% of males passed through six and remaining through seven instars, with significant larval protandry. The larvae that developed through...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Annual crop pest; Armyworm; Artificial diet; Development; Life cycle.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000100271

Nutritional parameters of steers receiving different levels of sunflower crushed in partial replacement of soybean meal
Provedor de dados: 42
Autores: LIMA,HELLEN L.; GOES,RAFAEL H.T.B. DE; CERILO,SARA L.N.; OLIVEIRA,EUCLIDES R. DE; GRESSLER,MARIA G.M.; BRABES,KELLY C.S.
ABSTRACTTo evaluate of the sunflower crushed in nutritional parameters in steers, supplemented at pasture, we used four steers in 4×4 Latin square design. The supplements were provided in 6 g-kg of body weight-animal-day, consisting of sunflower crushed, corn, soybean meal and mineral. All the supplements was isonitrogenous and soybean meal was replaced in 0, 20, 40, and 60% for sunflower crushed. The determination of ruminal pH and ammonia was at 0, 2, 4, 6 and 8 h. after feeding and for short-chain fatty acids it was collected at 0 and 6 h. post-feeding. The dry matter intake was not affected (P&gt;0.05) by inclusion of sunflower crushed (mean=6.59 kg-day). There was no significant effect (P&gt;0.05) for pH for the inclusion of sunflower crushed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fatty acid; Ammonia; PH; By-product; Supplementation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401513

Expression of manganese peroxidase by Lentinula edodes and Lentinula boryana in solid state and submerged system fermentation
Provedor de dados: 42
Autores: HERMANN,KATIA L.; COSTA,ALESSANDRA; HELM,CRISTIANE V.; LIMA,EDSON A. DE; TAVARES,LORENA B.B.
The production of ethanol from lignocellulosic biomass is referred as a second generation biofuel, whose processing is one of the most promising technologies under development. There are few available studies on the use of enzymes produced by fungi as active for the biodegradation of lignocellulosic biomass. However, the manganese peroxidase (MnP) enzyme presents high potential to degrade lignin and the basidiomycetes are the major producers of this oxidase. Thus, this study aimed at evaluating the ability of fungi Lentinula edodes and Lentinula boryana to produce this enzyme when cultivated in submerged fermentation system (SS) and also in solid-state fermentation system (SSF) containing Eucalyptus benthamii sawdust with or without corn cob meal. In the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Basidiomycetes; Eucalyptus benthamii; Enzyme; Ethanol.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000300965

Genetic variation in native and farmed populations of Tambaqui (Colossoma macropomum) in the Brazilian Amazon: regional discrepancies in farming systems
Provedor de dados: 42
Autores: Aguiar,Jonas; Schneider,Horacio; Gomes,Fátima; Carneiro,Jeferson; Santos,Simôni; Rodrigues,Luis R.; Sampaio,Iracilda.
The tambaqui, Colossoma macropomum, is the most popular fish species used for aquaculture in Brazil but there is no study comparing genetic variation among native and farmed populations of this species. In the present study, we analyzed DNA sequences of the mitochondrial DNA to evaluate the genetic diversity among two wild populations, a fry-producing breeding stock, and a sample of fish farm stocks, all from the region of Santarém, in the west of the Brazilian state of Pará. Similar levels of genetic diversity were found in all the samples and surprisingly the breeding stock showed expressive representation of the genetic diversity registered on wild populations. These results contrast considerably with those of the previous study of farmed stocks in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tambaqui; Mitochondrial DNA; Genetic variability; Aquaculture.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401439

Perception of local inhabitants regarding the socioeconomic impact of tourism focused on provisioning wild dolphins in Novo Airão, Central Amazon, Brazil
Provedor de dados: 42
Autores: ALVES,LUIZ C.P.S.; ZAPPES,CAMILAH A.; OLIVEIRA,RAFAEL G.; ANDRIOLO,ARTUR; AZEVEDO,ALEXANDRE DE F.
Botos (Inia geoffrensis) are currently provisioned for use in tourist attractions in five sites in the Brazilian Amazon. Despite the known negative effects associated with human-wild dolphin interactions, this activity has been regulated and licensed in the Anavilhanas National Park in Novo Airão, Amazonas State, Brazil. We present an updated evaluation of the perception of the local community concerning the possible socioeconomic impacts of this tourism in Novo Airão. In April 2011, 45 interviews were conducted with inhabitants. A small segment of Novo Airão perceives currently itself as being economically dependent on the botos feeding tourism. Despite that, the economic benefits of this controversial activity apparently are not shared among most...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazon; Anavilhanas National Park; Artificial feeding; Boto; Inia geoffrensis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401577

The role of phytophysiognomies and seasonality on the structure of ground-dwelling anuran (Amphibia) in the Pampa biome, southern Brazil
Provedor de dados: 42
Autores: MARAGNO,FRANCIÉLE P.; SANTOS,TIAGO G.; CECHIN,SONIA Z.
ABSTRACTConsidering that habitat use by amphibians is related both with climate and environmental features, we tested the hypothesis that anuran assemblages found in different phytophysiognomies and in different seasons vary in structure. Additionally, we searched for species which can be indicators of habitat and seasons. The study was conducted in the Pampa biome, southern Brazil. Sampling was done through pitfall traps placed in three phytophysiognomies: grassland, ecotone grassland/forest; and forest. The seasonality factor was created by grouping months in warn and cold seasons. Sixteen species were found and the assemblages were influenced both by phytophysiognomies and climatic seasonality. In a paired comparison, the three phytophysiognomies...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amphibian; Community; Ecotone; Pitfalls traps; Seasons.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000301105

Conservation priorities of useful plants from different techniques of collection and analysis of ethnobotanical data
Provedor de dados: 42
Autores: Lucena,Reinaldo F.P. de; Lucena,Camilla M.; Araújo,Elcida L.; Alves,Ângelo G.C.; Albuquerque,Ulysses P. de.
This study analyzes three methods of data analysis to verify which one would be more appropriate to get information aiming the conservation, selecting the use value (VU) inventory in situ and conservation property index (IPC). It was developed in in Northeast Brazil, via interviewed householders (46 informants). The VU was calculated considering only the effective use of plants; the inventory in situ was made through the frequency of species occurrence in homes; and the IPC combining ethnobotanical and phytossociological data. It was observed a similar cast of the indicated species by VU and inventory in situ, being different from the IPC cast. As this study sought to analyze the best technique for species identification which were needing conservationist...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodiversity; Caatinga; Inventory in situ; Priority index of conservation; Use value.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000100169

Description of three more new species of the genus Ananteris
Provedor de dados: 42
Autores: LOURENCO,WILSON R.; GIUPPONI,ALESSANDRO P.L.; LEGUIN,ELISE-ANNE.
Three new species of the genus Ananteris Thorell have been discovered in Brazil. Ananteris desiderio sp. n., Ananteris camacan sp. n. and Ananteris infuscata sp. n. are respectively described from specimens collected in the regions of São Desidério, Camacã, Rebio UNA and Jequié in the state of Bahia, and Grão Mogol and Novo Horizonte in the state of Minas Gerais, Brazil. New records are also proposed for Ananteris luciae Lourenço, Ananteris mauryi Lourenço and Ananteris franckei Lourenço. The number of known Ananteris species known in the scorpion fauna of Brazil is now raised to 24.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodiversity; Neotropical fauna; Taxonomy; Scorpions; Bahia; Minas Gerais.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200709

Late Quaternary landscape evolution of northeastern Amazonia from pollen and diatom records
Provedor de dados: 42
Autores: CASTRO,DARCILÉA F.; OLIVEIRA,PAULO E. DE; ROSSETTI,DILCE F.; PESSENDA,LUIZ C.R.
The main goal of this study was to reconstruct the Late Pleistocene-Holocene floristic composition in an area of the northern Brazilian Amazonia, comparing the results with other Amazonian localities in order to discuss the factors that have influenced phytophysiognomic changes over this time period. The work in eastern Marajó Island at the mouth of the Amazonas River was approached based on analysis of 98 pollen and diatom samples from core data distributed along a proximal to distal transect of a paleoestuarine system. The results indicated high concentration of Rhizophora, associated with arboreal pollen grains typical of the modern Amazonian rainforest during the last 40,000 cal yrs BP. Pollen composition also included wetland herbs. Diatoms were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vegetation pattern; Climate; Late Quaternary; Paleoenvironment; Marajó Island; Northeastern Amazonia.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000100035

Diversity and seasonality of Scarabaeinae (Coleoptera: Scarabaeidae) in forest fragments in Santa Maria, Rio Grande do Sul, Brazil
Provedor de dados: 42
Autores: DA SILVA,PEDRO G.; VAZ-DE-MELLO,FERNANDO Z.; DI MARE,ROCCO A.
Scarabaeinae specimens were collected with the use of pitfall traps      baited with human excrement, rotten meat and rotting banana, between May 2009      and April 2010, in three forest fragments in Santa Maria, Rio Grande do Sul,      Brazil: ‘Morro do Elefante’ (MOEL), ‘Morro do Cerrito’ (MOCE) and ‘Campus da      Universidade Federal de Santa Maria’ (UFSM). A total of 19,699 individuals      belonging to 33 species were collected. Canthidium aff.       trinodosum Boheman, 1858, Canthon latipes      Blanchard, 1845, Dichotomius assifer (Eschscholtz 1822),       Eurysternus caribaeus (Herbst 1789),       Canthidium sp. and Canthon lividus      Blanchard, 1845, were the most abundant species. MOEL showed the greatest      richness, MOCE the greatest...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic forest; Dung beetles; Southern Brazil; Species richness; Temporal distribution.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200679

Transmission rate variation among three B chromosome variants in the fish Prochilodus lineatus (Characiformes, Prochilodontidae)
Provedor de dados: 42
Autores: PENITENTE,MANOLO; VOLTOLIN,TATIANA A.; SENHORINI,JOSé A.; BORTOLOZZI,JEHUD; FORESTI,FAUSTO; PORTO-FORESTI,FáBIO.
Cytogenetic studies were developed in Prochilodus lineatus (Valenciennes 1836), describing an interesting system of small supernumerary chromosomes. The purpose of this work is to study the frequency and morphology of B chromosomes in individuals from the parental line and the inheritance patterns of these elements in individuals obtained from controlled crosses in the species P. lineatus. The transmission rate of B chromosomes revealed a kB=0.388 for the acrocentric type, a kB=0.507 for the metacentric type and a kB=0.526 for the submetacentric type. The obtained results raise hypothesis that B-acrocentric chromosomes are involved in an extinction process in this species, while the metacentric and submetacentric supernumerary elements comprises a neutral...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Supernumerary chromosomes; Controlled crosses; Curimbatá; Cytogenetic; Inheritance.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401371

Daily and seasonal activity patterns of free range South-American rattlesnake (Crotalus durissus)
Provedor de dados: 42
Autores: TOZETTI,ALEXANDRO M.; MARTINS,MARCIO.
This study aimed at describing daily and seasonal variation in the activity of a population of South-American rattlesnakes (Crotalus durissus) in a savanna like habitat (Cerrado) in Southeastern Brazil. Seasonal and daily activities of snakes were evaluated by the number of captures of snakes during road surveys, accidental encounters, and relocations by radio-tracking. Our results show that climatic variables such as air temperature and rainfall have little influence on the activity pattern of rattlesnakes. Our findings indicate that rattlesnakes spend most of the day resting and most of the night in ambush posture. The South-American rattlesnake is active throughout the year with a discrete peak in activity of males during the matting season. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cerrado; Ethology; Squamata; Radio-track.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000301047

Construction of yellow fever virus subgenomic replicons by yeast-based homologous recombination cloning technique
Provedor de dados: 42
Autores: Queiroz,Sabrina R.A.; Silva,Andréa N.M.R.; Santos,Jefferson J.S.; Marques Jr,Ernesto T.A.; Bertani,Giovani R.; Gil,Laura H.V.G.
RNA replicon derived from Flavivirus genome is a valuable tool for studying viral replication independent of virion assembly and maturation, besides being a great potencial for heterologous gene expression. In this study we described the construction of subgenomic replicons of yellow fever virus by yeast-based homologous recombination technique. The plasmid containing the yellow fever 17D strain replicon (pBSC-repYFV-17D), previously characterized, was handled to heterologous expression of the green fluorescent protein (repYFV-17D-GFP) and firefly luciferase (repYFV-17D-Luc) reporter genes. Both replicons were constructed by homologous recombination between the linearized vector pBSC-repYFV-17D and the PCR product containing homologous 25 nucleotides ends...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cloning technique; Homologous recombination; Replicon; Reporter gene; Yellow fever virus.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000100159

Morphogenetic characteristics of three Brachiaria brizantha cultivars submitted to nitrogen fertilization
Provedor de dados: 42
Autores: Silva,Marcos F; Porto,Edson M. V; Alves,Dorismar D; Vitor,Cláudio M.T; Aspiazú,Ignacio.
This study aims to evaluate the morphogenetic characteristics of three cultivars of Brachiaria brizantha subjected to nitrogen fertilization. The design was a randomized block in factorial arrangement 4x3; three cultivars of B. brizantha - Marandu, Piatã, Xaraés and four nitrogen levels - 0, 80, 160 and 240 kg/ha, with three replications. The experimental units consisted of plastic pots filled with 5 dm3 of soil. Thereupon the establishment fertilization, varieties were sowed directly in the pots, leaving, after thinning, five plants per pot. Forty-five days after planting, it was done a standardization cut at 10 cm tall. Nitrogen levels were distributed according to the treatments, divided in three applications. The morphogenetic characteristics were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cv. Marandu; Cv. Piatã; Cv. Xaraés; Morphogenesis; Signal grass.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000100371

Copper Stress on Photosynthesis of Black Mangle (Avicennia germinans)
Provedor de dados: 42
Autores: GONZALEZ-MENDOZA,DANIEL; GIL,FRANCISCO ESPADAS y; ESCOBOZA-GARCIA,FERNANDO; SANTAMARIA,JORGE M.; ZAPATA-PEREZ,OMAR.
The effects of copper toxicity on the photosynthetic activities of Avicennia germinans was investigated using two CuSO4 concentrations (0.062 and 0.33 M) added in Hoagland's solution in an aerated hydroponic system. Photosynthesis and chlorophyll fluorescence were measured after 30 h of copper stress. Results obtained in this study show that increasing levels of Cu+2 of 0.062 and 0.33 M Cu+2 resulted in a general reduction of the stomatal conductance (28 and 18%, respectively) and 100% of inhibition of net photosynthesis. Additionally, at these concentrations of Cu+2, reductions of chlorophyll fluorescence parameters were also observed. These changes suggested that the photosynthetic apparatus of Avicennia germinans was the primary target of the Cu+2...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avicennia germinans; Chlorophyll fluorescence; Copper; Photosystem II; Photosynthesis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200665

Horse spleen segmentation technique as large animal model of preclinical trials
Provedor de dados: 42
Autores: Foz Filho,Roberto P.P.; Martin,Benedito W. de; Lima,Ana Rita de; Miglino,Maria Angélica.
The parenchymal distribution of the splenic artery was studied in order to obtain anatomical basis for partial splenectomy. Thirty two spleens were studied, 26 spleens of healthy horses weighing 320 to 450kg, aged 3 to 12 years and 6 spleens of fetus removed from slaughterhouse. The spleens were submitted to arteriography and scintigraphy in order to have their vascular pattern examined and compared to the external aspect of the organ aiming establish anatomo-surgical segments. All radiographs were photographed with a digital camera and the digital images were submitted to a measuring system for comparative analysis of areas of dorsal and ventral anatomo-surgical segments. Anatomical investigations into the angioarchitecture of the equine spleen showed a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arteriography; Equine; Scintigraphy; Spleen; Splenic artery.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401411

Phytogeographical patterns of dry forests sensu stricto in northern Minas Gerais State, Brazil
Provedor de dados: 42
Autores: ARRUDA,DANIEL M.; FERREIRA-JUNIOR,WALNIR G.; DUQUE-BRASIL,REINALDO; SCHAEFER,CARLOS E.R.
The Deciduous Complex that occurs in northern Minas Gerais State, Brazil, raises questions about the floristic affinities of these formations in relation to neighboring phytogeographical domains. Little is known about the identity of the seasonal forest formations that comprise this complex, or about its relationships to abiotic components, such as soils, topography and climate. This study aimed to recognize the patterns of floristic similarity of all studied fragments of dry forest of northern Minas Gerais with soil and climate attributes, based on the available database. Cluster analysis indicated the existence of two floristic groups that had clear associations with either the Koppen's BSh (semi-arid) or Aw (seasonal tropical) climates. Likewise, the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Climate; Deciduous seasonal forest; Ecotone; Phytogeography; Soil.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200623

Generalized quasi-Banach sequence spaces and measures of noncompactness
Provedor de dados: 42
Autores: SILVA,EDUARDO B.; FERNANDEZ,DIOCESAR L.; NIKOLOVA,LUDMILA.
Given 0 &lt; s ≤ 1 and ψ an s-convex function, s – ψ -sequence spaces are introduced. Several quasi-Banach sequence spaces are thus characterized as a particular case of s – ψ -spaces. For these spaces, new measures of noncompactness are also defined, related to the Hausdorff measure of noncompactness. As an application, compact sets in s – ψ -interpolation spaces of a quasi-Banach couple are studied.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Quasi-Banach spaces; Quasi-convex functions; Measures of noncompactness; Interpolation theory.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200443

Maturation of Eugenia pyriformis seeds under different hydric and thermal conditions
Provedor de dados: 42
Autores: Lamarca,Edmir V.; Prataviera,Juliana S.; Borges,Igor F.; Delgado,Liliana F.; Teixeira,Carmen C.; Camargo,Marcelo B.P. de; Faria,José M.R.; Barbedo,Claudio J.
This study aims to analyze the maturation and dispersal of Eugenia pyriformis Cambess. seeds produced in different years, and the influence of variation in thermal and hydric environment on seed physical and physiological characteristics at dispersal. Fruits at different developmental stages were harvested in the city of São Paulo between 2003 and 2010, as well as in the cities of Campinas and Lavras, in 2009 and 2010 and analyzed for size and color. The seeds were extracted from the fruits and their dry mass, water content, germination and vigor were assessed. Results showed that seed maturation is unsynchronized to the maturation of the fruit, taking 45 days on average (430 growing degree-days), longer in rainy times or lower temperatures. Seeds with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dispersal; Development; Degree-day; Rainfall; Recalcitrants seeds.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000100223

Stonemeal of amazon soils with sediments from reservoirs: a case study of remineralization of the tucuruí degraded land for agroforest reclamation
Provedor de dados: 42
Autores: THEODORO,SUZI H.; LEONARDOS,OTHON H.; ROCHA,EDUARDO; MACEDO,IRIS; REGO,KLEYSSON G.
This study suggests the employment of accumulated sediments in the reservoir of Tucuruí (Pará /Brazil) to remineralize the surrounding degraded soils. The approach was based on the principles of stonemeal technology. It suggests that the soil can be rejuvenated by crushed rocks rich in macro and micronutrients. Removal of the sediments for agricultural use will bring benefits to family farmers and increase the life cycle of the reservoir and, therefore, energy generation. Geochemical data on retained sediments, soils and rocks in the area of influence of the reservoir were evaluated regarding nutrient transport mechanisms and soil-fertility potential. Results show that sediments from the reservoir contain nutrients levels at least one order of magnitude...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Geochemistry; Sediments; Reservoir; Agroforestry; Sustainable development.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000100023

Comparative palynological analysis of Lygodium venustum Sw. and L. volubile Sw. (Lygodiaceae)
Provedor de dados: 42
Autores: GIACOSA,JUAN P. RAMOS; MORBELLI,MARTA A.; GIUDICE,GABRIELA E.
The genus Lygodium Sw. is one of the few climbing ferns in the world. The spores of L. venustum Sw. and L. volubile Sw. were studied using light, scanning, and transmission electron microscopy. This work is based on herbarium material. The spores are trilete, triangular, with straight to convex sides in polar view. The equatorial diameter is 72-104 µm, and the polar diameter is 64-84 µm. The ornamentation in L. venustum is verrucate-tuberculate while in L. volubile, it is verrucate-tuberculate in the proximal face but with a few ridges on the distal face, where a micro-ornamentation constituted by verrrucae and tubercles is observed. An equatorial ridge is also present. The exospore is two-layered; in L. venustum, it is smooth in contrast with the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lygodiaceae; Lygodium; Morphology; Spores; Ultrastructure.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200699

Germination responses of the invasive Calotropis procera (Ait.) R. Br. (Apocynaceae): comparisons with seeds from two ecosystems in northeastern Brazil
Provedor de dados: 42
Autores: LEAL,LAURA C.; MEIADO,MARCOS V.; LOPES,ARIADNA V.; LEAL,INARA R.
Life history traits are considered key indicators of plant invasibility. Among them, the germination behavior of seeds is of major relevance because it is influenced by environmental factors of invaded ecosystem. Here, we investigated how seed traits and seed tolerance to environmental factors on seed germination of Calotropis procera vary depending on the invaded ecosystems in northeastern Brazil. We have tested seeds from two vegetation types – Caatinga and Restinga – to different levels of light intensity, salinity, and water stress. Previous to those experiments, seed-set and morphometric analysis were carried out for both studied populations. We have observed a higher seed-set in Caatinga. Seeds produced in this ecosystem had lower seed moisture...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biological invasions; Caatinga; Environmental factors; Restinga; Seed germination; Seed-set.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000301025

Luminescence characteristics of quartz from Brazilian sediments and constraints for OSL dating
Provedor de dados: 42
Autores: GUEDES,CARLOS C.F.; SAWAKUCHI,ANDRé O.; GIANNINI,PAULO C.F.; DEWITT,REGINA; AGUIAR,VITOR A.P.
This study analyzes the optically stimulated luminescence (OSL) characteristics of quartz grains from fluvial, eolian and shallow marine sands of northeastern and southeastern Brazil, with especial focus on the applicability of the single-aliquot regenerative dose (SAR) dating protocol. All analyzed Brazilian sediments presented relatively high OSL sensitivity and good behavior regarding their luminescence characteristics relevant for radiation dose estimation. However, some samples from the Lençóis Maranhenses region in northeastern Brazil showed inadequate OSL sensitivity correction, hampering the implementation of the SAR protocol and their ability to behave as a natural dosimeter. While the shallow marine and eolian samples showed a narrow and reliable...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Optically stimulated luminescence (OSL) dating; Single-Aliquot Regenerative-Dose protocol (SAR); OSL sensitivity; Brazilian sands.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401303

Evaluation of Bcl-2, Bcl-x and Cleaved Caspase-3 in Malignant Peripheral Nerve Sheath Tumors and Neurofibromas
Provedor de dados: 42
Autores: CUNHA,KARIN S.; CARUSO,ANABELA C.; FARIA,PAULO A.; SILVA,LICíNIO E. DA; FONSECA,ELIENE C. DA; GELLER,MAURO; MOURA-NETO,RODRIGO S. DE; LOPES,VÂNIA S.
ABSTRACTAIMSTo study the expression of Bcl-2, Bcl-x, as well the presence of cleaved caspase-3 in neurofibromas and malignant peripheral nerve sheath tumors. The expression of Bcl-2 and Bcl-x and the presence of cleaved caspase 3 were compared to clinicopathological features of malignant peripheral nerve sheath tumors and their impact on survival rates were also investigated.MATERIALS AND METHODSThe evaluation of Bcl-2, Bcl-x and cleaved caspase-3 was performed by immunohistochemistry using tissue microarrays in 28 malignant peripheral nerve sheath tumors and 38 neurofibromas. Immunoquantification was performed by computerized digital image analysis.CONCLUSIONSApoptosis is altered in neurofibromas and mainly in malignant peripheral nerve sheath tumors....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Apoptosis regulatory proteins; Malignant peripheral nervous sheath tumors; Neurofibroma; Neurofibromatosis 1.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401497

Longevity of the Brazilian underground tree Jacaranda decurrens Cham.
Provedor de dados: 42
Autores: ALVES,RUY J.V.; SILVA,NiLBER G. DA; FERNANDES JUNIOR,ALUiSIO J.; GUIMARAES,ALESSANDRA R.
Underground trees are a rare clonal growth form. In this survey we describe the branching pattern and estimate the age of the underground tree Jacaranda decurrens Cham. (Bignoniaceae), an endangered species from the Brazilian Cerrado, with a crown diameter of 22 meters. The mean age calculated for the individual was 3,801 years, making it one of the oldest known living Neotropical plants.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bignoniaceae; Cerrado; Campo rupestre; Longevity; Underground trees.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200671

In vitro trypanocidal activity of solamargine and extracts from Solanum palinacanthum and Solanum lycocarpum of brazilian cerrado
Provedor de dados: 42
Autores: MOREIRA,RAQUEL R.D.; MARTINS,GILMARCIO Z.; MAGALHÃES,NATHÁLIA O.; ALMEIDA,ADÉLIA E.; PIETRO,ROSEMEIRE C.L.R.; SILVA,FLÁVIA A. J.; CICARELLI,REGINA M.B.
The present investigation was to evaluate the potential trypanocidal activity of crude ethanolic extract of the fruits of Solanum palinacanthum, Solanum lycocarpum and the glycoalcaloid, solamargine. S. palinacanthum and S. lycocarpum fruit powders were submitted to exhaustively extraction with 96% ethanol and solamargine were isolated from the extract of S. palinacanthum. Both extracts and solamargine were analysed for trypanocidal activity by using MTT colorimetric assay. Extracts of S. palinacanthum showed to be more active (IC50 = 175.9 µg.ml–1) than S. lycocarpum (IC50 = 194.7 µg.ml–1). Solamargine presented a strong activity (IC50 = 15.3 µg.ml–1), which can explain the better activity of the both extracts. Benznidazol (IC50 = 9.0 µg.ml–1) is the only...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Solanum palinacanthum; Solanum lycocarpum; Solamargine; Epimastigote; Antitrypanosomal activity; Trypanosoma cruzi.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000300903

Melliferous flora and pollen characterization of honey samples of Apis mellifera L., 1758 in apiaries in the counties of Ubiratã and Nova Aurora, PR
Provedor de dados: 42
Autores: SEKINE,ELIZABETE S.; TOLEDO,VAGNER A.A.; CAXAMBU,MARCELO G.; CHMURA,SUZANE; TAKASHIBA,ELIZA H.; SEREIA,MARIA JOSIANE; MARCHINI,LUÍS C.; MORETI,AUGUSTA C.C.C.
The aim of this study was to carry out a survey of the flora with potential for beekeeping in the counties of Ubiratã and Nova Aurora-PR through the collection of plants and pollen analyses in honey samples collected monthly. 208 species of plants were recorded, distributed in 66 families. The families that showed the major richness of pollen types were: Asteraceae, Myrtaceae and Solanaceae. Approximately 80 pollen types were found in honey samples, most of them were characterized as heterofloral. Cultivated plants, such as Glycine max (soybean) and Eucalyptus spp., were representative in some months of the year. Exotic species, such as Ricinus communis and Melia azedarach, were also frequent. However, over than 50% of the pollen types belong to native...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Beekeeping; Bee plants; Floral resources; Floristic survey.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000100307

L      2 harmonic forms and finiteness of ends
Provedor de dados: 42
Autores: ZHU,PENG.
In this paper, we obtain vanishing theorems and finitely many ends theorems of complete Riemannian manifolds with weighted Poincaré inequality, applying them to minimal hypersurfaces.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: End; Minimal hypersurface; Weighted Poincare inequality; L      2 harmonic forms; Complete manifolds.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200457

The relationship between sandy beach nematodes and environmental characteristics in two Brazilian sandy beaches (Guanabara Bay, Rio de Janeiro)
Provedor de dados: 42
Autores: MARIA,TATIANA F.; PAIVA,PAULO; VANREUSEL,ANN; ESTEVES,ANDRÉ M.
We investigated if the differences in density and nematode communities of intertidal sediments from two Brazilian sheltered sandy beaches were related to environmental characteristics. The upper tide level (UTL) and the low tide level (LTL) of both beaches were surveyed in January (austral summer) and June 2001 (austral winter) during low-spring tides, by collecting samples of nematodes and sediments. Differences in density between beaches, tidal level and seasons, and nematode community structure were investigated. Sediments from both beaches were composed of medium to very coarse sand. The highest nematode densities were found at the UTL, and significant differences between beaches, tidal levels and months were found. A total of 54 genera were found and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brazil; Free-living marine nematodes; Hydrodynamic; Granulometry; Sandy beach.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000100257

Cryopreservation of mutton snapper (Lutjanus analis) sperm
Provedor de dados: 42
Autores: SANCHES,EDUARDO G.; OLIVEIRA,IDILI R.; SERRALHEIRO,PEDRO C. DA SILVA; CERQUEIRA,VINICIUS R.
This study aimed to develop a protocol of semen cryopreservation of the mutton snapper Lutjanus analis. The interaction between three extenders ( pH 6.1; 7.8 and 8.2) , two concentrations of dimethyl sulfoxide ( DMSO, 5 and 10%) and three cooling rates ( -90; -60 and -30°C.min−1) on the sperm motility rate and motility time were analyzed by a factorial experiment. A sample of 30 fishes ( 1,261 ± 449 g) collected in the nature was kept in floating net cages. The semen was frozen by using cryogenic straws, in nitrogen vapour and transferred, later, to liquid nitrogen. Fertilization test was accomplished to evaluate the viability of the cryopreserved sperm. The highest sperm motility rate and motility time ( P &lt; 0.05) was achieved by combining extender C (...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cryoprotector; Extender; Lutjanus analis; Reproduction; Sperm.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000301083

Microhabitat of small mammals at ground and understorey levels in a deciduous, southern Atlantic Forest
Provedor de dados: 42
Autores: MELO,GERUZA L.; MIOTTO,BARBARA; PERES,BRISA; CACERES,NILTON C.
Each animal species selects specific microhabitats for protection, foraging, or micro-climate. To understand the distribution patterns of small mammals on the ground and in the understorey, we investigated the use of microhabitats by small mammals in a deciduous forest of southern Brazil. Ten trap stations with seven capture points were used to sample the following microhabitats: liana, fallen log, ground litter, terrestrial ferns, simple-trunk tree, forked tree, and Piper sp. shrubs. Seven field phases were conducted, each for eight consecutive days, from September 2006 through January 2008. Four species of rodents (Akodon montensis, Sooretamys angouya, Oligoryzomys nigripes and Mus musculus) and two species of marsupials (Didelphis albiventris and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cricetid rodents; Didelphid marsupials; Habitat selection; Predator-prey relationship; Vertical space use.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200727

Nests, Eggs, and Nestlings of the Restinga Antwren Formicivora littoralis (Aves: Thamnophilidae)
Provedor de dados: 42
Autores: CHAVES,FLAVIA G.; VECCHI,MAURICIO B.; LAURINDO,THIAGO F.S.; ALVES,MARIA ALICE S.
We describe the nest, eggs, and nestlings of the Restinga Antwren (Formicivora littoralis), an endangered bird of Restinga ecosystem (sandy coastal plain vegetation) that is endemic to Rio de Janeiro state. Twelve nests were found at the edges of trails or natural gaps at Massambaba Restinga region, in different supporting plants and heights from the ground (X ± SD 1.27 ± 0.97 m, range 0.27 to 3.45 m). Nests were cup-shaped and were in horizontal forks attached to branches at three to five points with whitish, soft, and thin cotton-like vegetable fiber. The nests' cup shape and measurements were similar to congeneric species, but nest material was different. Eggs were white with brown spots concentrated on the large end or around the middle, giving the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic Forest; Brazil; Breeding; Conservation; Endemic; Passeriformes.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200547

Neotectonics in Marajó Island, State of Pará (Brazil) revealed by vertical electric sounding integrated with remote sensing and geological data
Provedor de dados: 42
Autores: SOUZA,LENA S.B.; ROSSETTI,DILCE F.; ELIAS,VAGNER R.; PRADO,RENATO L.
Studies suggest that the Marajó Island has experienced neotectonic activity during its latest evolution. However, there are no data demonstrating the presence of tectonic structures in its shallow subsurface. This work integrates vertical electric sounding, morphostructural lineaments, and geological data aiming to show fault control on the Late Pleistocene-Holocene sedimentation of this area. Resistivity values were related to mud (&lt; 90 Ωm), clayey sand (90 and 200 Ωm), sand (200 and 500 Ωm), as well as Fe-bearing sand and laterite (&gt; 500 Ωm). The latest values were related to the unconformity with lateritic paleosol at the top of the Barreiras Formation. Despite the values ≤ 500 Ωm of both the Barreiras Formation and the Late Pleistocene-Holocene...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vertical electric sounding; Faults; Quaternary; Marajó Island; Remote sensing.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000100073

Developmental pathway from leaves to galls induced by a sap-feeding insect on Schinus polygamus (Cav.) Cabrera (Anacardiaceae)
Provedor de dados: 42
Autores: DIAS,GRACIELA G.; FERREIRA,BRUNO G.; MOREIRA,GILSON R.P.; ISAIAS,ROSY M.S.
Galling sap-feeding insects are presumed to cause only minor changes in host plant tissues, because they usually do not require development of nutritive tissues for their own use. This premise was examined through comparison of the histometry, cytometry and anatomical development of non-galled leaves and galls of Calophya duvauae (Scott) (Hemiptera: Calophyidae) on Schinus polygamus (Cav.) Cabrera (Anacardiaceae). Cell fates changed from non-galled leaves to galls during the course of tissue differentiation. C. duvauae caused changes in dermal, ground, and vascular systems of the leaves of S. polygamus. Its feeding activity induced the homogenization of the parenchyma, and the neoformation of vascular bundles and trichomes. The histometric and cytometric...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hemipteran gall; Histometry; Developmental patterns; Cell fates.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000100187

Spatial and temporal analysis of stem bleeding disease in coconut palm in the state of sergipe, Brazil
Provedor de dados: 42
Autores: CARVALHO,REJANE R. DA COSTA E; SOUZA,PAULO E. DE; WARWICK,DULCE R.N.; POZZA,EDSON A.; CARVALHO FILHO,JOSé L.S. DE.
ABSTRACTStem bleeding disease (resinosis) of coconut palm is caused by Thielaviopsis paradoxa and is very important in the state of Sergipe, Brazil. Understanding the epidemiological behavior of the disease is essential for establishing more efficient control strategies. Thus, we characterized the temporal progression and spatial distribution of stem bleeding in a commercial orchard under conditions of natural infection in the area of Neopolis, Sergipe. Three plots with 729 plants each were selected and evaluated every two months for stem bleeding incidence. In the temporal analysis, the monomolecular model gave the best fit to data on disease incidence, as it accurately showed the temporal dynamics of the disease during the experiment period. The spatial...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coconut; Epidemiology; Stem bleeding; Thielaviopsis paradoxa.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401567

Soil microbial response to glucose and phosphorus addition under agricultural systems in the Brazilian Cerrado
Provedor de dados: 42
Autores: FERREIRA,ADÃO S.; SANTOS,MARIA AMELIA DOS; CORRÊA,GILBERTO F.
Conventional tillage (CT) and no-tillage (NT) management systems alter soil nutrient availability and consequently modify soil microbial response to nutrient additions such as carbon (C) and phosphorus (P). The objective of this study is to evaluate microbial response to the addition of C (glucose) and P (Na2HPO4.7H2O) under CT and NT in the brazilian Cerrado. In response to glucose addition, the NT system yielded higher microbial respiration rates and glucose consumption than the CT system. The best microbial response to C addition was after 0 - 12 h incubation in NT and 0 - 24 h in CT. The addition of P produced higher demand under CT than NT. After incubation, biochemical indicators such as microbial respiration, glucose consumption, dehydrogenase...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dehydrogenase; Glucose assay; Michaelis-Menten equation; Nutrient demands; Incubation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000100395

Responses of the molluscan fauna to environmental variations in a Halodule wrightii Ascherson ecosystem from Northeastern Brazil
Provedor de dados: 42
Autores: BARROS,KCRISHNA V.S.; ROCHA-BARREIRA,CRISTINA A.
ABSTRACTThis study observed the spatial and temporal distributions of molluscs in a Halodule wrightii meadow, verifying if they respond satisfactorily to seasonal changes in this seagrass ecosystem. Twenty-four species were identified. Chitons were rare, bivalves had greater number of species (11), followed by gastropods (9) which were also the most abundant class (73%). All classes were more abundant in the belowground. The most common species was Tricolia affinis, especially in aboveground. The occurrence of some species in both strata or out of the expected stratum may have been influenced by shallow layer of the sediment considered in this study, hydrodynamic, and low biomass of the studied meadow. According to univariate and multivariate analyses,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Benthic communities; Hypnea musciformis; Marine food web; Northeast of Brazil; Seagrasses; Tricolia affinis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401397

Wild birds as pets in Campina Grande, Paraíba State, Brazil: An Ethnozoological Approach
Provedor de dados: 42
Autores: LICARIÃO,MORGANA R.; BEZERRA,DANDARA M.M.; ALVES,RÔMULO R.N.
Birds are one of the animals most widely used by humans and are highly valued as pets. The present work reports the use of wild birds as pets in the city of Campina Grande, Paraíba State (PB), Brazil. The owners' choice and perceptions of the species ecology was assessed as well. The methodology employed included unstructured and semi-structured interviews, guided tours and direct observations. A total of 26 bird species distributed among ten families and four orders were identified. The most frequently encountered order was Passeriformes (76.9%), with a predominance of the family Emberizidae (34.6%). The specimens kept as pets were principally obtained in public markets or between the breeders themselves. The popularity of birds as pets, compounded by the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avifauna; Bird breeders; Commerce in wild birds; Conservation; Ethnozoology; Ethno-ornithology.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000100201

Diversity and associations between coastal habitats and anurans in southernmost Brazil
Provedor de dados: 42
Autores: OLIVEIRA,MAURO C.L.M.; SANTOS,MAURICIO B. DOS; LOEBMANN,DANIEL; HARTMAN,ALEXANDRE; TOZETTI,ALEXANDRO M.
This study aimed to verify the relationship between habitat and the composition of anuran species in dune and restinga habitats in southernmost Brazil. The habitats were sampled between April 2009 and March 2010 using pitfalls with drift fence. We have captured 13,508 individuals of 12 anuran species. Species richness was lower in the dunes and dominance was higher in the resting. Apparently the less complex plant cover, water availability, and wide daily thermal variation in dunes act as an environmental filter for frogs. This hypothesis is reinforced by the fact that the most abundant species (Physalaemus biligonigerus and Odonthoprynus maisuma) bury themselves in the sand, minimizing these environmental stresses. Despite being in the Pampa biome, the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amphibia; Coastal dunes; Restinga; Niche.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200575

Multivariate optimization of an ultrasound-assisted extraction procedure for Cu, Mn, Ni and Zn determination in ration to chickens
Provedor de dados: 42
Autores: BARROS,JOÉLIA M.; BEZERRA,MARCOS A.; VALASQUES,GISSELI S.; NASCIMENTO JÚNIOR,BARAQUÍZIO B. DO; SOUZA,ANDERSON S.; ARAGÃO,NÁDIA M. DE.
In this work, multivariate optimization techniques were used to develop a method based on the ultrasound-assisted extraction for copper, manganese, nickel and zinc determination from rations for chicken nutrition using flame atomic absorption spectrometry. The proportions of extracting components (2.0 mol.L–1 nitric, hydrochloric and acetic acid solutions) were optimized using centroid-simplex mixture design. The optimum proportions of this mixture taken as percentage of each component were respectively 20%, 37% and 43%. Variables of method (sample mass, sonication time and final acid concentration) were optimized using Doehlert design. The optimum values found for these variables were respectively 0.24 g, 18s and 3.6 mol.L–1. The developed method allows...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rations to chicken; Ultrasound-assisted extraction; Mixture design; Doehlert design; Metals.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000300891

The Late Holocene upper montane cloud forest and high altitude grassland mosaic in the Serra da Igreja, Southern Brazil
Provedor de dados: 42
Autores: SCHEER,MAURICIO B.; CURCIO,GUSTAVO R.; RODERJAN,CARLOS V.
Many soils of the highlands of Serra do Mar, as in other mountain ranges, have thick histic horizons that preserve high amounts of carbon. However, the age and constitution of the organic matter of these soils remain doubtful, with possible late Pleistocene or Holocene ages. This study was conducted in three profiles (two in grassland and one in forest) in Serra da Igreja highlands in the state of Paraná. We performed δ13C isotope analysis of organic matter in soil horizons to detect whether C3 or C4 plants dominated the past communities and 14C dating of the humin fraction to obtain the age of the studied horizons. C3 plants seem to have dominated the mountain ridges of Serra da Igreja since at least 3,000 years BP. Even though the Serra da Igreja may...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic Rain Forest; Carbon isotopes; Humin fraction; Radiocarbon dating; Sea Mountain Range; Upper montane vegetation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200769

Administering ascorbic acid to rats undergoing ageing processes: effects on myosin-V immunoreactive myenteric neurons
Provedor de dados: 42
Autores: Mello,Sônia A.; Marese,Angélica C.M.; Brancalhão,Rose M.C.; Zanoni,Jacqueline N.; Natali,Maria Raquel M.
During the ageing process the enteric nervous system undergoes morphofunctional changes, such as enteric neurodegeneration. Neuronal death can be attributed to increase radicals free, and ascorbic acid (AA), known antioxidant, could minimize damage cause by oxidative stress. The objective of this study is to analyse the behaviour of morphoquantative myenteric neurons in the duodenum of adult Wistar rats with aged 90 (C90), 345 (E345) and 428 (E428) days, as well as animals of the same age who received ascorbic acid supplementation for 120 days (EA345 and EA428). Whole-mount preparations of muscle layer from the duodenum of the animals were immunostained by the method myosin V. 80 microscopic fields were quantified (14.8 mm2/animal) and measured 100...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aging; Antioxidant; Enteric nervous system; Immunohistochemistry.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000100337

Hormesis with glyphosate depends on coffee growth stage
Provedor de dados: 42
Autores: CARVALHO,LEONARDO B. DE; ALVES,PEDRO L.C.A.; DUKE,STEPHEN O.
Weed management systems in almost all Brazilian coffee plantations allow herbicide spray to drift on crop plants. In order to evaluate if there is any effect of the most commonly used herbicide in coffee production, glyphosate, on coffee plants, a range of glyphosate doses were applied directly on coffee plants at two distinct plant growth stages. Although growth of both young and old plants was reduced at higher glyphosate doses, low doses caused no effects on growth characteristics of young plants and stimulated growth of older plants. Therefore, hormesis with glyphosate is dependent on coffee plant growth stage at the time of herbicide application.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coffea arabica L.; Weed management; Herbicide; Spray drift; Stimulatory effect.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200813

Development of the Atlantic Forest in Rio de Janeiro, the oldest known Neotropical plant and biogeography of megaherbivores during the Late Pleistocene in South America
Provedor de dados: 42
Autores: KELLNER,ALEXANDER W.A.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200441

Protective effects of steroidal alkaloids isolated from Solanum paniculatum L. against mitomycin cytotoxic and genotoxic actions
Provedor de dados: 42
Autores: VIEIRA,PABLINE M.; MARINHO,LORENA P.M.; FERRI,SUZANA C.S.; CHEN-CHEN,LEE.
Solanum paniculatum L. is a plant species widespread throughout tropical America, especially in the Brazilian Cerrado region. It is used in Brazil for culinary purposes and in folk medicine to treat liver and gastric dysfunctions, as well as hangovers. Previous studies with S. paniculatum ethanolic leaf extract or ethanolic fruit extract demonstrated that they have no genotoxic activity neither in mice nor in bacterial strains, although their cytotoxicity and antigenotoxicity were demonstrated in higher doses. In order to assess the possible compounds responsible for the activities observed, we fractionated the ethanolic fruit extract of S. paniculatum, characterized by 1H and 13C NMR spectra, and evaluated two fractions containing steroidal alkaloids...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anticytotoxicity; Antigenotoxicity; Jurubeba; Micronuclei; Solanaceae.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200553

Osmotic conditioning and shading on the germination and on the initial growth of Myracrodruon urundeuva Allemão seedlings
Provedor de dados: 42
Autores: SCALON,SILVANA P.Q.; MOTA,LEANDRO H.S.; MUSSURY,ROSILDA M.
The present work aimed to evaluate the osmotic conditioning and shading on the germination and on the initial growth of aroeira seedlings. The seeds were pre-imbibed in solutions with different concentrations of PEG (polyethylene glycol) and KNO3 and incubated at 10°C and 20°C temperatures, during 0 (control), 12 and 24 hours. After these periods, the seeds were dried until they reached the initial levels of humidity. After that, they were put for germinating in BOD (Biochemical Oxygen Demand) chambers, at alternated 20-30°C. The control treatment and the pre-conditionings that presented the best results in BOD germination were selected, PEG (-1.0 MPa) + KNO3 (-1.0 MPa) and KNO3 (-1.0 MPa), with pre-imbibition for 12 h and incubated in BOD at 20°C. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aroeira; Anacardiaceae; Cerrado; Shading; PEG 6000 and KNO3.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200799

Nanotechnology and lung diseases, caterpillars and agriculture, a new fossil turtle egg type from China, and a giant flying reptile from Gondwana
Provedor de dados: 42
Autores: KELLNER,ALEXANDER W. A.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000100001

Geochronology and heavy metal flux to Guanabara bay, Rio de Janeiro state: a preliminary study
Provedor de dados: 42
Autores: Baptista Neto,José A.; Peixoto,Tomás C.S.; Smith,Bernard J.; Mcalister,John J.; Patchineelam,Soraya M.; Patchineelam,Sambasiva R.; Fonseca,Estefan M.
Guanabara Bay, located in Rio de Janeiro state. It is surrounded by the second most important metropolitan area of the country. Over recent decades, land disturbance and urbanization in the surrounding area has significantly increased sediment input to the bay and had a negative effect on its overall environmental. This is especially related to high volumes of untreated sewage and industrial effluents. This study evaluates the history of this human impact through detailed examination of a sediment core taken from the northern portion of Guanabara Bay. A geochronology is established using 210Pb dating and related to organic carbon and heavy metal fluxes to the sediments. This gave a calculated net average sedimentation rate for the core of 0.67 cm.year-1....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 210Pb; Geochronology; Flux of heavy metal; Guanabara Bay.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401317

Isolation and HPLC quantitation of kaurane-type diterpenes and cinnamic acid derivatives of long-term stored leaves of Mikania laevigata and Mikania glomerata
Provedor de dados: 42
Autores: BERTOLUCCI,SUZAN K.V.; PEREIRA,ANA B.D.; PINTO,JOSE E.B.P.; OLIVEIRA,ALAIDE B.; BRAGA,FERNAO C.
The leaves of Mikania laevigata and Mikania glomerata are used in Brazil to treat respiratory affections, being kaurane-type diterpenes and coumarin considered as the bioactive compounds. The present study reports an investigation on the HPLC-DAD profiles and contents of coumarin (1), trans-o-coumaric (2), kaurenoic (3), benzoylgrandifloric (4) and cinnamoylgrandifloric (5) acids in dried leaves of Mikania species stored in dark room under controlled conditions. Excepting 2, the constituents were isolated and purified to be employed as reference compounds. The samples were analyzed at three monthly intervals up to 18 months for M. laevigata and 12 months for M. glomerata. trans-o-Coumaric was not detected in both, whereas 1 occurred only in M. laevigata....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chemical markers changes; HPLC-DAD analysis; Mikania laevigata; Mikania glomerata; Storage; Post-harvest.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200473

The effect of stocking density on the growth of apple snails native Pomacea bridgesii and exotic Pomacea lineata (Mollusca, Gastropoda)
Provedor de dados: 42
Autores: JUNIOR,ESMAR SOUZA; BARROS,JOSE CARLOS N. DE; PARESQUE,KARLA; FREITAS,RODRIGO R. DE.
The demand for alternative food sources is currently in evidence in the world and, therefore, the culture of animal species considered not conventional makes this theme relevant and appropriate. In the present study, the species Pomacea lineata and Pomacea bridgesii, each with three stowage densities (0.5 [T1], 1 [T2], and 1.5 [T3] animal/L), were tested. They were analyzed regarding growth rate, weight gain, final biomass, feed conversion and percentage of survival. There was not any statistically significant difference between the different densities for both species. The final average weight in the three waterworks did not differ significantly in P. bridgesii. In P. lineata, T1 (22.3 ± 1.80g) was significantly higher than T2 and T3. On the other hand,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mollusk; Aquaculture; Alternative food source; Feed conversion; Grow rate; Weight gain; Molusco; Aquicultura; Fonte alternativa de alimento; Conversao alimentar; Taxa de crescimento; Ganho de peso.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200753

Influence of the apparent molecular size of humic substances on the efficiency of coagulation using Fenton's reagent
Provedor de dados: 42
Autores: DE JULIO,MARCELO; DE JULIO,TATIANE S.; DI BERNARDO,LUIZ.
This work used Fenton's reagent as a coagulating agent in the treatment of water samples with high true colour caused by humic substances (HS) extracted from peat. In addition, the effects of the apparent molecular size of HS on coagulation, flocculation and flotation were studied. To that end, four distinct water samples having the same true colour were prepared using HS with different molecular sizes, which were obtained by ultrafiltration fractioning. Through optimisation of coagulant dosage and coagulation pH, as well as posterior construction of coagulation diagrams for each water sample, it was verified that the sample prepared with the smallest apparent molecular size of HS was the most difficult to treat, requiring higher coagulant (Fenton's...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coagulation; DAF; Drinking water; Fenton's reagent; Humic substances; Molecular size.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200833

Predictive factors of subjective sleep quality and insomnia complaint in patients with stroke: implications for clinical practice
Provedor de dados: 42
Autores: ROCHA,PATRÍCIA C. DA; BARROSO,MARINA T.M.; DANTAS,ANA AMÁLIA T.S.G.; MELO,LUCIANA P.; CAMPOS,TANIA F.
The complaints regarding sleep problems have not been well identified after a stroke. The aim of this study was to investigate the predictive factors of sleep quality and insomnia complaints in patients with stroke. A total of 70 subjects, 40 patients (57 ± 7 years) and 30 healthy controls (52 ± 6 years) assessed by the Pittsburgh Sleep Quality Index (PSQI) and the Sleep Habits Questionnaire took part in the study. The data were analyzed using the chi-square test, the Student's t-test and logistic regression analysis. On average, the patients showed poor sleep quality (patients: 6.3 ± 3.5; controls: 3.9 ± 2.2; p= 0.002) and insomnia complaint was the most prevalent (patients: 37.5%; controls: 6.7%; p= 0.007). The absence of insomnia complaint (OR= 0.120;...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insomnia; Sleep disturbances; Sleep quality; Stroke.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000301197

Morphology and anatomy of the diaspores and seedling ofPaspalum (Poaceae, Poales)
Provedor de dados: 42
Autores: EICHEMBERG,MAYRA T.; SCATENA,VERA L.
ABSTRACTThe knowledge regarding of the diaspore and post-seminal development ofPaspalum L. is important for grassland biodiversity conservation, based on their representativeness and genetic improvement of forage. The morphology of the diaspore and the post-seminal development of Paspalum dilatatum Poir. (rhizomatous),P. mandiocanum Trin. var. subaequiglume Barreto (stoloniferous), P. pumilum Nees. (decumbent caespitose) andP. urvillei Steud. (erect caespitose) was described to distinguish species with different growth forms and to survey the characters useful for taxonomy. P. dilatatum differs by presenting oval diaspores larger than the others, with five prominent nerves and trichomes; P. urvillei presents diaspores with one central nerve that is more...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Caryopsis; Embryo; Forage; Germination; Grass.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401389

E-commerce adoption in Malaysian Small and Medium Enterprises Practitioner Firms: A revisit on Rogers' model
Provedor de dados: 42
Autores: POORANGI,MEHDI M.; KHIN,EDWARD W.S.; NIKOONEJAD,SHOHREH; KARDEVANI,ARASH.
The current climate of business necessitates competitions that are often tough and unpredictable. All organizations, regardless their size and scope of operation, are facing severe competitive challenges. In order to cope with this phenomenon, managers are turning to e-commerce in their respective organizations. The present study hinges upon exploring and explaining the different dimensions of the adoption of e-commerce among Small and medium enterprises, based on the Five Factors of Diffusion of Innovation Model derived by Rogers. In this study, however, we employed the survey methods. A questionnaire was distributed to 1,200 managers and employees in the manufacturing, service and agricultural sectors by email; with a response rate of 10%. The results...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: E-commerce adoption; SMEs; Rogers Model; Diffusion of innovation; E-business.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401593

General results for the Marshall and Olkin's family of distributions
Provedor de dados: 42
Autores: BARRETO-SOUZA,WAGNER; LEMONTE,ARTUR J.; CORDEIRO,GAUSS M.
Abstract Marshall and Olkin (1997) introduced an interesting method of adding a parameter to a well-established distribution. However, they did not investigate general mathematical properties of their family of distributions. We provide for this family of distributions general expansions for the density function, explicit expressions for the moments and moments of the order statistics. Several especial models are investigated. We discuss estimation of the model parameters. An application to a real data set is presented for illustrative purposes.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Marshall-Olkin extended distribution; Maximum likelihood estimation; Monte Carlo simulation; Rényi entropy.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000100003

Mathematic model of three-phase induction machine connected to advanced inverter for traction system for electric trolley
Provedor de dados: 42
Autores: BOCII,LIVIU S.; MULLER,VALENTIN.
This paper establishes a mathematical model of induction machine connected to a frequency inverter necessary to adjust the electric motor drive. The mathematical model based on the Park's theory allows the analysis of the whole spectrum (electric car – frequency inverter) to drive the electric trolley bus made on ASTRA Bus Arad (Romania). To remove higher order harmonics, the PWM waveform of supply voltage is used, set in the general case. Operating characteristics of electric motor drive are set to sub-nominal frequency (f &lt; 50 Hz) and for different angles of the control switching elements in the construction of the inverter. Tensions in the stator of the equivalent machine are determined by three components: the fundamental component; the second...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Induction engine; Operating characteristics; Mathematic model; Trolley bus.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200849

Pouteria ramiflora extract inhibits salivary amylolytic activity and decreases glycemic level in mice
Provedor de dados: 42
Autores: GOUVEIA,NEIRE M. DE; ALBUQUERQUE,CIBELE L. DE; ESPINDOLA,LAILA S.; ESPINDOLA,FOUED S.
In this study, extracts of plant species from the Cerrado biome were assessed in order to find potential inhibitors of human salivary alpha-amylase. The plants were collected and extracts were obtained from leaves, bark, and roots. We performed a preliminary phytochemical analysis and a screening for salivar alpha-amylase inhibitory activity. Only three botanical families (Sapotaceae, Sapindaceae and Flacourtiaceae) and 16 extracts showed a substantial inhibition (&gt;75%) of alpha-amylase. The ethanolic extracts of Pouteria ramiflora obtained from stem barks and root barks decreased amylolytic activity above 95% at a final concentration of 20 µg/mL. Thus, adult male Swiss mice were treated orally with P. ramiflora in acute toxicity and glycemic control...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alpha-amylase inhibition; Hypoglycemia; Pouteria ramiflora; Sapotaceae.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000301141

Chemical constituents of Aspergillus sp EJC08 isolated as endophyte from Bauhinia guianensis and their antimicrobial activity
Provedor de dados: 42
Autores: Pinheiro,Eduardo A.A.; Carvalho,Josiwander M.; Santos,Diellem C.P. dos; Feitosa,André O.; Marinho,Patrícia S.B.; Guilhon,Giselle Maria S.P.; Santos,Lourivaldo S.; Souza,Afonso L.D. de; Marinho,Andrey M.R.
The present work reports the isolation of five compounds from Aspergillus sp EJC08 isolated as endophytic from Bauhinia guianensis, a tipical plant of the Amazon. The compounds ergosterol (1), ergosterol peroxide (2), mevalolactone (3), monomethylsulochrin (4) and trypacidin A (5) were isolated by chromatographic procedures and identified by spectral methods of 1D and 2D NMR and MS. Compounds 3, 4 and 5 were tested against Escherichia coli, Pseudomonas aeruginosa, Bacillus subtilis and Staphylococcus aureus and showed good activity.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chemical constituents; Antimicrobial assay; Aspergillus; Bauhinia guianensis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401247

Evaluation of analgesic and anti-inflammatory activities of Hydrocotyle umbellata L., Araliaceae (acariçoba) in mice
Provedor de dados: 42
Autores: FLORENTINO,IZIARA F.; NASCIMENTO,MARCUS VINÍCIUS M.; GALDINO,PABLINNY M.; BRITO,ADRIANE F. DE; ROCHA,FABIO F. DA; TONUSSI,CARLOS R.; LIMA,THEREZA CHRISTINA M. DE; PAULA,JOSÉ R. DE; COSTA,ELSON A.
The Hydrocotyle umbellata L. is a specimen of the Araliaceae family popularly known as acariçoba. Its indications in folk medicine include treatment of skin ulcers, and rheumatism. The aim of this study was to evaluate the antinociceptive and anti-inflammatory activities of the ethanolic extract from acariçoba's underground parts (EEA). EEA reduced the nociceptive response of the animals as evaluated in the acetic acid-induced writhing test and in both phases of formalin test. EEA also presented a supraspinal analgesic activity by increasing the pain latency in the hot plate test. Moreover, EEA reduced the leukocytes migration and plasma extravasation to pleural cavity in the carrageenan-induced pleurisy, besides reducing the edema induced by carrageenan...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acariçoba; Anti-inflammatory; Antinociceptive; Biomedical Sciences; Hydrocotyle umbellata L.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000300987

Relationship between pollen morphology and chromosome numbers in Brazilian species of Lippia L. (Verbenaceae)
Provedor de dados: 42
Autores: Sousa,Saulo M.; Pierre,Patrícia M.O.; Torres,Giovana A.; Davide,Lisete C.; Viccini,Lyderson F.
The pollen morphology and exine structure of 17 species of Lippia L. were investigated in this work using light and scanning electron microscopy. Among the species studied, 14 showed tricolporate pollen grains, two had tri- and tetracolporate pollen grains and a single species exhibited, only tetracolporate pollen. The amb ranged from triangular to square, and the shape varied from oblate-spheroidal to prolate-spheroidal. Three different types of exine ornamentation were observed: psilate, scabrate and perforate. In addition to morphological data, we found positive association between the chromosome numbers and size of pollen grains, and also between the length and width of the colpi. The results indicate that the characteristics of pollen grains in Lippia...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chromosome numbers; Lippia; Palynology; Palynomorphology; Pollen; Verbenaceae.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000100147

Detrital carbonate sedimentation of the Rocas Atoll, South Atlantic
Provedor de dados: 42
Autores: PEREIRA,NATAN S.; MANSO,VALDIR A.V.; MACEDO,RENÊ J.A.; DIAS,JOÃO M.A.; SILVA,ADRIANA M.C.
Located 266 km offshore Brazilian coast, Rocas Reef complex is the only atoll in the South Atlantic. Two scientific expeditions carried out detailed sedimentological studies of the complex. Sand texture was dominant in the sedimentary environment, although other textures such as gravel, sandy gravel and gravelly sand, were also observed. Mean size ranged from fine sand to coarse sand (-1.23 to 2.34ø), with an average value of 0.69ø (sand fraction), which from a geological perspective represents a high-energy environment. The values of mean size varied in the different geomorphologic compartments, a response to variable hydrodynamics on the reef. Sorting ranged from very well sorted to poorly sorted, with a mean value of 0.97ø (moderately sorted). The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biogenic particles; Carbonate sediments; Atoll reef; Sedimentological parameters.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000100057

Phytoplankton community of Reis lake in the Brazilian Amazon
Provedor de dados: 42
Autores: SILVA,ISE G.; MOURA,ARIADNE N.; DANTAS,ENIO W.
Reis Lake is located in the municipality of Caracaraí, state of Roraima (Brazil) and is subject to fluctuations in water level. The aim of this study was to analyze the structure of the phytoplankton community on the nictemeral and seasonal scales and determined the influence of limnological variables. Sampling was performed in the rainy season (June/2006) and dry season (November/2006), considering two nictemeral cycles. The phytoplankton community was assessed with regard to composition and density, abiotic variables were analyzed simultaneously. The lake had low concentrations of oxygen, clinograde profile and water stratified during the day and homogenous at night, with low concentrations of nutrients and waters ranging from slightly acidic to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phytoplankton; Nictemeral; Floodplain; Seasonal; State of Roraima.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200649

Epigallocatechin-3-gallate combined with alpha lipoic acid attenuates high glucose-induced receptor for advanced glycation end products (RAGE) expression in human embryonic kidney cells
Provedor de dados: 42
Autores: Leu,Jyh-Gang; Lin,Chin-Yao; Jian,Jhin-Hao; Shih,Chin-Yu; Liang,Yao-Jen.
The anti-oxidant effects of epigallocatechin gallate (EGCG) and alpha lipoic acid (ALA) have been demonstrated in previous studies. The kidney protection effects of EGCG and ALA in patients with kidney injury are still under investigation. The purpose of this study is to investigate the anti-inflammatory and anti-oxidant effects of EGCG and ALA on high glucose-induced human kidney cell damage. EGCG inhibited high glucose(HG)-induced TNF-α and IL-6 production in human embryonic kidney (HEK) cells. Both EGCG and ALA decreased HG-induced receptor of advanced glycation end products (RAGE) mRNA and protein expressions in HEK cells. EGCG and ALA also recovered HG-inhibited superoxide dismutase production and decreased ROS expressions in HEK cells. The synergism...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diabetic nephropathy; Receptor of advanced glycation end products; Epigallocatechin gallate; Alpha lipoic acid; Anti-oxidant.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200745

Induction and characterization of oil palm (Elaeis guineensis Jacq.) pro-embryogenic masses
Provedor de dados: 42
Autores: PáDUA,MARLÚCIA S.; PAIVA,LUCIANO V.; LABORY,CLAÚDIA R.G.; ALVES,EDUARDO; STEIN,VANESSA C.
ABSTRACTOil palm is one of the most economically valuable oil seed plants, but the expansion of plantations has been limited by availability of seedlings, as the conventional propagation is through seeds, which have low germination rates. One possible solution for the large-scale production is the use of somatic embryogenesis. The aim of this study was evaluate the effects auxins 2,4-D and picloram on the induction of pro-embryogenic masses inE.guineenesis hybrid leaf explants and characterize, regarding embryogenic characteristics, with cytochemical and ultrastructural analisys. Specifically, in vitro plantlets leaves fragments were inoculated in Y3 culture medium supplemented by 2.4-D or picloram at different concentrations (0.0, 1.0, 3.0, 6.0 and 9.0 mg...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Embryogenic potential; Growth regulators; Tissue culture; Transmission electron microscopy.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401545

Anurans in a forest remnant in the transition zone between cerrado and atlantic rain forest domains in southeastern Brazil
Provedor de dados: 42
Autores: PIRANI,RENATA M.; NASCIMENTO,LUCIANA B.; FEIO,RENATO N.
This study presents the species richness, temporal distribution and reproductive activity of anurans from the Uaimií State Forest (Floresta Estadual do Uaimií – FLOE Uaimií), situated in the Quadrilátero Ferrífero region, municipality of Ouro Preto, Minas Gerais state, Brazil. Field activities were performed monthly from September 2009 to August 2010. We recorded 36 anurans species, distributed in 10 families. The greatest richness of the sampled sites corresponds to a permanent rivulet in a secondary forest. The majority of anuran species presented seasonal vocalization activity pattern, mainly in the rainy season. The anuran species composition of FLOE Uaimií is similar to others studied areas from the Quadrilátero Ferrífero region.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amphibians; Espinhaço Mountain Range; Inventory; Reproductive activity.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000301093

Hawkmoth fauna (Sphingidae, Lepidoptera) in a semi-deciduous rainforest remnant: composition, temporal fluctuations, and new records for northeastern Brazil
Provedor de dados: 42
Autores: PRIMO,LUIS M.; DUARTE,JOSÉ A.; MACHADO,ISABEL C.
We carried out a qualitative and quantitative inventory of the hawkmoth fauna (Sphingidae) of an area of semi-deciduous seasonal rainforest in the state of Pernambuco (Tapacurá Ecological Station), northeastern Brazil. Hawkmoths were sampled monthly from October 2004 to February 2007 (27 months). We recorded 31 species from 16 genera, three tribes, and three families. Macroglossinae was the most abundant subfamily and represented ca. 71% of all species. Out of the 277 individuals collected, 88.4% were males. Five new records were made for northeastern Brazil: Enyo gorgon (Cramer, 1777), Perigonia stulta (Herrich-Schäffer, [1854]), Eupyrrhoglossum sagra (Poey, 1832), Nyceryx coffaeae (Walker, 1856) and Xylophanes chiron (Drury, 1773). Eight further species...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dry forest; Pernambuco Endemism Center; Phenology; Seasonality; Sphingidae abundance and richness; Sphingophily.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000301177

Pedology and plant physiognomies in the cerrado, Brazil
Provedor de dados: 42
Autores: NERI,ANDREZA V.; SCHAEFER,CARLOS E.G.R.; SOUZA,AGOSTINHO L.; FERREIRA-JUNIOR,WALNIR G.; MEIRA-NETO,JOÃO A.A.
This study was carried out in Paraopeba National Reserve. It aims to classify and evaluate the soil of the studied area and to verify the influence of soil attributes on vegetation by testing the following hypotheses: 1) under woodland physiognomies (Cerradão) the soil fertility is higher and the Al content lower; 2) open savanna occurs only in areas with high Al contents. For this purpose, representative soils in the Paraopeba National Reserve were mapped, identified, and samples from five profiles were analyzed. The environmental gradient was easily observed by principal components analyses, where the differences between the sites were highlighted. The Spearman correlation was used to verify the hypothesis. The correlation between vegetation (basal area,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aluminum tolerance; Brazilian savanna; Edaphic features; Soil fertility; Soil-vegetation gradient.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000100087

Preliminary phytochemical screening and molluscicidal activity of the aqueous extract of Bidens pilosa Linné (Asteraceae) in Subulina octona (Mollusca, Subulinidade)
Provedor de dados: 42
Autores: SOUZA,BRUNA A.; SILVA,LIDIANE C. DA; CHICARINO,EVELYN D.; BESSA,ELISABETH C. A.
The aim of this study was to establish reference concentrations (LC50 e LC90) of aqueous extracts of Bidens pilosa on the land snail Subulina octona, in order to assess the changes caused by 24 and 48 h exposure to the sublethal concentration regarding species' fecundity, hatchability and in offspring produced after exposure to confirm the presence of tannins, saponins and flavonoids in this plant species. Eggs newly hatched and 30 day-old snails were exposed to sublethal concentration, calculated for adults. The phytochemical analysis confirmed the presence of flavonoids, condensed tannins and saponins in the aqueous extract of B. pilosa. The LC50 and LC90 obtained were 51.4mg-mL and 74.1mg-mL respectively. The exposure to sublethal concentration reduced...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural pest control land sn; Ail molluscicide vegetable extract.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401557

Production of 5-hydroxy-7-methoxy-4-methylphthalide in a culture of Penicillium crustosum
Provedor de dados: 42
Autores: Valente,Angela M.M.P.; Ferreira,Antonio G.; Daolio,Cristina; Rodrigues Filho,Edson; Boffo,Elisangela F.; Souza,Antonia Q.L.; Sebastianes,Fernanda L.S.; Melo,Itamar S.
The chemical reactions carried out by microorganisms have been used as a tool in modern chemistry. This paper reports the production of mycophenolic acid and a new phthalide by the endophytic fungus Penicillium crustosum obtained from coffee seeds. The fungus was cultivated in a liquid medium for a period of seven days and after that the culture medium was divided into four treatments: A, B, C and D, to which different organic substances were added. Treatment A was maintained as the control to evaluate the occurrence of biotransformation. Organic acids were added to the culture media of treatments B (ferulic and quinic acids) and C [cinnamic and 3,4-(methylenedioxy) cinnamic acids], and caffeine was added in the treatment D. All these organic compounds...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coffee; Endophytic fungus; Mycophenolic acid; Penicillium crustosum; 5-hydroxy-7-methoxy-4-methylphthalide.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200487

Growth and biochemical composition of Chlorella vulgaris in different growth media
Provedor de dados: 42
Autores: CHIA,MATHIAS A.; LOMBARDI,ANA T.; MELãO,MARIA DA GRAÇA G.
The need for clean and low-cost algae production demands for investigations on algal physiological response under different growth conditions. In this research, we investigated the growth, biomass production and biochemical composition of Chlorella vulgaris using semi-continuous cultures employing three growth media (LC Oligo, Chu 10 and WC media). The highest cell density was obtained in LC Oligo, while the lowest in Chu medium. Chlorophyll a, carbohydrate and protein concentrations and yield were highest in Chu and LC Oligo media. Lipid class analysis showed that hydrocarbons (HC), sterol esthers (SE), free fatty acids (FFA), aliphatic alcohols (ALC), acetone mobile polar lipids (AMPL) and phospholipids (PL) concentrations and yields were highest in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carbohydrates; Lipid class; Microalgae; Proteins.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401427

Tryblionella persuadens comb. nov.(Bacillariaceae, Diatomeae): new observations on frustule morphology of a seldom recorded diatom
Provedor de dados: 42
Autores: CAVALCANTE,KAOLI P.; TREMARIN,PRISCILA I.; FREIRE,EDUARDO G.; LUDWIG,THELMA A.V.
ABSTRACTThe species originally described from brackish waters of the Venetian Lagoon asNitzschia persuadens is a diatom rarely cited in the literature since its proposition and it is here recorded for the first time in a freshwater environment in South America. Morphological features of this species, such valve slightly panduriform, with a longitudinal straight fold of the valve face, poroidal areolae, and strongly eccentric raphe system clearly assign this species to Tryblionella, and the transfer was made. Here we present new observations on the frustule morphology and comparisons with related species. Light and scanning electron microscopy data of Tryblionella persuadens comb. nov. from Cachoeira River, Northeastern Brazil are documented.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacillariophyceae; Brazil; Coastal river; Nitzschia persuadens.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401419

The low academic profile of Brazilian economists
Provedor de dados: 42
Autores: Meneghini,Rogerio.
The worldwide prestige of economists in the lay media lies significantly higher than scientists and academics from other fields of expertise. Brazil is not an exception as well. A point that calls attention to this fact is that the most prestigious international economists, who are frequently present in the lay media, are also distinguished in the academic environment. The lay prestige may be measured by their presence in the media and by surveys of public opinion, whereas academic prestige may be evaluated using database indicators of publications and citations of academic articles. One indicator that became frequently used is the h-index, measuring publications and citations simultaneously. A relevant finding regarding international economists is that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Scientific assessment; H-index; Brazilian economists; Academic prestige; Lay prestige.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000100431

Chironomidae (Insecta: Diptera) of different habitats and microhabitats of the Vacacaí-Mirim River microbasin, Southern Brazil
Provedor de dados: 42
Autores: KÖNIG,RODRIGO; SANTOS,SANDRO.
The Chironomidae family is one of the main groups of aquatic insects present in streams. This work aimed to investigate the influences of anthropogenic pressures and substrate types on chironomid community composition and structure. Chironomid larvae were collected during the summer of 2007 at four sites along the Vacacaí-Mirim River microbasin, chosen based on the different available benthic substrates. The organisms were identified in the laboratory at the genus level, and the density, the rarefied taxonomic richness and the Shannon diversity index were calculated. The faunal structure was subjected to an ANOVA to compare the metrics among sites and substrates. The community composition of the sites was subjected to a multivariate statistical analysis....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquatic insects; Benthic substrates; Anthropogenic pressures; Faunal structure.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000300975

Germination of Styrax camporum Pohl. seeds in response to substrate types, moisture contents and the seed morphology
Provedor de dados: 42
Autores: Simão,Edson; Nakamura,Adriana T.; Takaki,Massanori.
This study evaluated the contributions of Styrax camporum seed morphology (size of seeds, presence or absence of endocarp attached to the seed), different substrates (filter paper, vermiculite, sand and the soils of cerrado s. str., cerradão and a riparian forest), different water potentials (0, -0.1, -0.2, -0.3, -0.4 and -0.5 MPa), light and temperature to seed germination. Seed size did not affect the germination percentage when seeds were sown on vermiculite. Seeds were affected by small variations in the moisture content of the tested substrates, showing a significant decrease in germination under water potentials lower than -0.1 MPa, close to the field capacity of cerrado s. str. soils. At the temperatures of 15 and 20°C, a significant decrease in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cerrado; Water stress; Morphophysiology; Styracaceae; Vermiculite.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000100295

Chemical constituents of Distictella elongata (Vahl) Urb. (Bignoniaceae)
Provedor de dados: 42
Autores: SIMÕES,LEANDRO R.; MACIEL,GLAUBER M.; BRANDÃO,GERALDO C.; FILHO,JOSÉ D.S.; OLIVEIRA,ALAÍDE B.; CASTILHO,RACHEL O.
Pectolinarin, a flavone heteroside, was isolated from Distictella elongata (Vahl) Urb. leaves ethanol extract, along with a mixture of ursolic, pomolic and oleanolic acids, besides β-sitosterol. Their structures were established on the basis of spectral analysis (1H and 13C NMR, 1D and 2D) and they were compared with literature. This is the first report on the occurrence of this flavonoid in a species of the Bignoniaceae family.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bignoniaceae; Distictella elongata; Pectolinarin; Triterpenes.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000300873

Pollen grain morphology of Fabaceae in the Special Protection Area (SPA) Pau-de-Fruta, Diamantina, Minas Gerais, Brazil
Provedor de dados: 42
Autores: LUZ,CYNTHIA F.P. DA; MAKI,ERICA S.; HORÁK-TERRA,INGRID; VIDAL-TORRADO,PABLO; MENDONçA FILHO,CARLOS VICTOR.
The presented paper considered the pollen morphology of thirteen species belonging to seven genera of the Fabaceae family occurring in the Pau-de-Fruta Special Protection Area (SPA), Diamantina, state of Minas Gerais, Brazil. The pollen grains of six species ofChamaecrista [C. cathartica (Mart.) H.S. Irwin &amp; Barneby, C. debilis Vogel, C. flexuosa (L.) Greene, C. hedysaroides (Vogel) H.S. Irwin &amp; Barneby, C. glandulosa (L.) Greene, and C. papillata H.S. Irwin &amp; Barneby] have a similar morphology, characterized by three long colporated apertures with a central constriction. The species share specific morphological features regarding pollen size, endoaperture type (circular, lalongate or lolongate) and SEM ornamentation patterns of the exine...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Espinhaço Southern Mountain Range; Fabaceae; Palynology; Pollen morphology.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401329

Nanoparticle-based therapy for respiratory diseases
Provedor de dados: 42
Autores: SILVA,ADRIANA L. DA; SANTOS,RAQUEL S.; XISTO,DÉBORA G.; ALONSO,SILVIA DEL V.; MORALES,MARCELO M.; ROCCO,PATRICIA R.M.
Nanotechnology is an emerging science with the potential to create new materials and strategies involving manipulation of matter at the nanometer scale (&lt;100 nm). With size-dependent properties, nanoparticles have introduced a new paradigm in pharmacotherapy – the possibility of cell-targeted drug delivery with minimal systemic side effects and toxicity. The present review provides a summary of published findings, especially regarding to nanoparticle formulations for lung diseases. The available data have shown some benefits with nanoparticle-based therapy in the development of the disease and lung remodeling in respiratory diseases. However, there is a wide gap between the concepts of nanomedicine and the published experimental data and clinical...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Asthma; Turberculosis; Nanotechnology; Lung cancer.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000100137

Spatial and Temporal Hydrochemical Variation of a Third Order River Network in a Quasi Pristine Coastal Watershed, at Southern Bahia, Brazil
Provedor de dados: 42
Autores: SOUZA,ELLY R.S. DE; PAULA,FRANCISCO C.F. DE.
ABSTRACTRio da Serra watershed presents well preserved fragments of rain forest at the headwaters and small farms at middle and final stretches. These features allowed the study of fluvial hydrochemistry, under quasi pristine conditions. Sampling stations were established in order to represent the basin, and visited during dry, intermediate and wet periods. Obtained results are: temperature (22.1 – 28.6 °C); electric conductivity (34 – 52 µS-cm); dissolved oxygen (35 – 110%); pH (3.8 – 7.7); total suspended solids (1.1 – 20 mg-L); chlorophyll (1.0 – 9.2 µg-L); total N (74 – 580 µmol-L); particulate N (60 – 550 µmol-L); N-NO3 (0.1 – 9.3 µmol-L); dissolved organic N (4 -70 µmol-L); total phosphorous (5.3 – 47 µmol-L); particulate P (4.4 – 59 µmol-L); P-PO4...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rivers ecology; Dissolved nutrients; Biological reserve; Wetlands.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401357

Developmental anatomy of Cyperus laxus (non-Nranz) and Fimbristylis dichotoma (Kranz) (Cyperaceae, Poales) and tissue continuity
Provedor de dados: 42
Autores: MARTINS,SHIRLEY; SCATENA,VERA L.
The Cyperaceae species are present in different ecosystems and constitute the herbaceous extract. Of the approximately 5,500 species of the family; a third has Kranz anatomy, representing an important characteristic of the taxonomy and phylogeny of the group. In Cyperus laxus L. (non-Kranz) and Fimbristylis dichotoma Vahl (Kranz), development begins with germination that is marked by the emergence of the coleoptiles, followed by the primary root, which is ephemeral. The rhizome originates from the mesocotyl and it promotes the vascular connection between the roots, leaves and scapes. The continuity of the tissues is evidenced by the presence of an endodermis and pericycle in all vegetative organs. Leaves and scapes differ between the two species by the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pericycle; Endodermis; Casparian strips; Seedling.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200605

The Gauss Map of Complete Minimal Surfaces with Finite Total Curvature
Provedor de dados: 42
Autores: HINOJOSA,PEDRO A.; SILVA,GILVANEIDE N.
In this paper we are concerned with the image of the normal Gauss map of a minimal surface immersed in ℝ3 with finite total curvature. We give a different proof of the following theorem of R. Osserman:The normal Gauss map of a minimal surface immersed inℝ3with finite total curvature, which is not a plane, omits at most three points of&amp;#55349;&amp;#56650;2Moreover, under an additional hypothesis on the type of ends, we prove that this number is exactly 2.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gauss map; Minimal surfaces; Finite total curvature; Image of the Gauss map.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401217

Amylin induces hypoglycemia in mice
Provedor de dados: 42
Autores: Guerreiro,Luiz H.; Silva,Daniel DA; Sola-Penna,Mauro; Mizurini,Daniella M.; Lima,Luís M.T.R.
Amylin is a 37-aminoacid pancreatic protein that exerts control over several metabolic events such as glycemia and lacticemia. Amylin has long been shown to induce increases in arterial plasma glucose. We decided to investigate whether amylin plays additional roles in the glucose metabolism. We evaluated glucose homeostasis using whole blood from the tail tip of fasting, conscious, unrestrained normal and streptozotocyn-induced diabetic mice following subcutaneous administration of mouse amylin. Subcutaneous injection of 1 μg mouse amylin caused a transient decrease in whole blood glucose in both normal and diabetic mice in the absence of insulin. The blood glucose levels were lowest approximately 2 hours after amylin administration, after that they...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amylin; Islet associated polypeptide; Glycemia; Diabetes; Mice; Hypoglycemia.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000100349

Impact of natural climate change and historical land use on landscape development in the Atlantic Forest of Rio de Janeiro, Brazil
Provedor de dados: 42
Autores: NEHREN,UDO; KIRCHNER,ANDRE; SATTLER,DIETMAR; TURETTA,ANA PAULA; HEINRICH,JURGEN.
Climate variations and historical land use had a major impact on landscape development in the Brazilian Atlantic Forest (Mata Atlântica). In southeast Brazil, rainforest expanded under warm-humid climate conditions in the late Holocene, but have been dramatically reduced in historical times. Nevertheless, the numerous remaining forest fragments are of outstanding biological richness. In our research in the Atlantic Forest of Rio de Janeiro we aim at the reconstruction of the late Quaternary landscape evolution and an assessment of human impact on landscapes and rainforests. In this context, special focus is given on (a) effects of climate variations on vegetation cover, soil development, and geomorphological processes, and (b) spatial and temporal land use...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic Forest; Historical land use; Landscape development; Natural climate change; Rio de Janeiro.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200497

Evaluation of Chemical Constituents and Antioxidant Activity of Coconut Water (Cocus nucifera L.) and Caffeic Acid in Cell Culture
Provedor de dados: 42
Autores: SANTOS,JOãO L.A.; BISPO,VANDERSON S.; B.C. FILHO,ADRIANO; PINTO,ISABELLA F.D.; DANTAS,LUCAS S.; VASCONCELOS,DAIANE F.; ABREU,FABíULA F.; MELO,DANILO A.; MATOS,ISAAC A.; FREITAS,FLORêNCIO P.; GOMES,OSMAR F.; MEDEIROS,MARISA H.G.; MATOS,HUMBERTO R.
Coconut water contains several uncharacterized substances and is widely used in the human consumption. In this paper we detected and quantified ascorbic acid and caffeic acid and total phenolics in several varieties of coconut using HPLS-MS-MS (25.8 ± 0.6 µg-mL and 1.078 ± 0.013 µg-mL and 99.7 µg-mL, respectively, in the green dwarf coconut water, or 10 mg and 539 µg and 39.8 mg for units of coconut consumed, 500 ± 50 mL). The antioxidant potential of four coconut varieties (green dwarf, yellow dwarf, red dwarf and yellow Malaysian) was compared with two industrialized coconut waters and the lyophilized water of the green dwarf variety. All varieties were effective in scavenging the DPPH radical (IC50=73 µL) and oxide nitric (0.1 mL with an IP of 29.9%) as...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant activity; Ascorbic acid; Caffeic acid; Cocos nucifera; Polyphenols.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401235

The largest flying reptile from Gondwana: a new specimen of Tropeognathus cf. T. mesembrinusWellnhofer, 1987 (Pterodactyloidea, Anhangueridae) and other large pterosaurs from the Romualdo Formation, Lower Cretaceous, Brazil
Provedor de dados: 42
Autores: KELLNER,ALEXANDER W. A.; CAMPOS,DIOGENES A.; SAYÃO,JULIANA M.; SARAIVA,ANTÔNIO A.F.; RODRIGUES,TAISSA; OLIVEIRA,GUSTAVO; CRUZ,LILIAN A.; COSTA,FABIANA R.; SILVA,HELDER P.; FERREIRA,JENNYFER S.
A very large pterosaur (MN 6594-V) from the Romualdo Formation (Aptian/Albian), Santana Group, Araripe Basin, is described. The specimen is referred to Tropeognathus cf. T. mesembrinus mainly due to the presence of a low and blunt frontoparietal crest, the comparatively low number of teeth and the inclined dorsal part of the occipital region. Two distinct wingspan measurements for pterosaurs are introduced: the maximized wingspan (maxws), which essentially consists of doubling the addition of all wing elements and the length of the scapula or the coracoid (the smaller of the two), and the normal wingspan (nws), which applies a reducing factor (rfc) to the maximized wingspan to account for the natural flexures of the wing. The rfc suggested for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pterosauria; Anhangueridae; Tropeognathus; Cretaceous; Gondwana.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000100113

Brachyuran and anomuran crabs associated with Schizoporella unicornis (Ectoprocta, Cheilostomata) from southeastern Brazil
Provedor de dados: 42
Autores: ALVES,DOUGLAS F.R.; BARROS-ALVES,SAMARA P.; LIMA,DANIEL J.M.; COBO,VALTER J.; NEGREIROS-FRANSOZO,MARIA LUCIA.
The main goals of this investigation were to describe the community structure of anomuran and brachyuran crabs inhabiting reefs constituted by colonies of Schizoporella unicornis, and to provide a species importance ranking for this community. Collections were carried out on S. unicornis reefs at two-month intervals from May 2003 to May 2004, in the rocky sublittoral of the southeastern Brazilian coast. Relative abundance and occurrence were used to rank these species in the hierarchy importance. A total of 2,018 individuals were obtained, in 11 families, 22 genera and 31 species. Porcellanidae and Pilumnidae were the most abundant families, comprising respectively almost 60% and 15% of individuals sampled. The species ranking indicated four main groups A,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biogenic substrata; Bryozoan; Community structure; Decapods; Symbiotic species.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000100245

Evidence of separate karyotype evolutionary pathway in Euglossa orchid bees by cytogenetic analyses
Provedor de dados: 42
Autores: FERNANDES,ANDERSON; WERNECK,HUGO A.; POMPOLO,SILVIA G.; LOPES,DENILCE M.
Euglossini are solitary bees considered important pollinators of many orchid species. Information regarding chromosome organization is available for only a small number of species in this group. In the present work, the species Euglossa townsendi and E. carolina were analyzed by cytogenetic techniques to collect information that may aid the understanding of their evolution and chromosomal organization. The chromosome number found was n = 21 for males and 2n = 42 for females in the two species. The distribution and amount of heterochromatin regions differed in the two species analyzed, where they were classified as “high” or “low” heterochromatin content, similarly to what has already been performed in social bee species of the genus Melipona. Banding...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cytogenetics; Euglossini; Heterochromatin; Karyotypic evolution.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000300937

Chlorophyll a spatial inference using artificial neural network from multispectral images and in situ measurements
Provedor de dados: 42
Autores: FERREIRA,MONIQUE S.; GALO,MARIA DE LOURDES B.T.
Considering the importance of monitoring the water quality parameters, remote sensing is a practicable alternative to limnological variables detection, which interacts with electromagnetic radiation, called optically active components (OAC). Among these, the phytoplankton pigment chlorophyll a is the most representative pigment of photosynthetic activity in all classes of algae. In this sense, this work aims to develop a method of spatial inference of chlorophyll a concentration using Artificial Neural Networks (ANN). To achieve this purpose, a multispectral image and fluorometric measurements were used as input data. The multispectral image was processed and the net training and validation dataset were carefully chosen. From this, the neural net...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Remote sensing of water; Fluorescence; Chlorophyll a; Spatial inference; Artificial neural network.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200519

Fishing strategies among prehistoric populations at Saquarema Lagoonal Complex, Rio de Janeiro, Brazil
Provedor de dados: 42
Autores: Guimarães,Márica B.
Two distinct fishing technologies were identified among the shellmound builders of the Saquarema Lagoonal Complex, in the Brazilian state of Rio de Janeiro: bone point technology and worked fish spines. These technologies were related to the acquisition of specific fish resources; Worked fish spines were used in the capture of Micropogonias furnieri (Desmarest), and bone points used for fishing specimens of the Ariidae family. Worked spines technology was predominant between 6,726 cal. years BP and 3,699 cal. years BP, while the bone point technology was dominant after 3,699 cal. years BP. It is believed these different strategies for obtaining fishing resources before 3,699 years cal. BP was related to environmental. Notably the gradual regression of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Subsistence resources; Fishing strategies; Shellmound; Holocene.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000100415

Standardization of a method to study angiogenesis in a mouse model
Provedor de dados: 42
Autores: FEDER,DAVID; PERRAZO,FABIO F.; PEREIRA,EDIMAR C.; FORSAIT,SILVANA; FEDER,CECíLIA K.R.; JUNQUEIRA,PAULO E.B.; JUNQUEIRA,VIRGINIA B.C.; AZZALIS,LIGIA A.; FONSECA,FERNANDO L.A.
In the adult organism, angiogenesis is restricted to a few physiological conditions. On the other hand, uncontrolled angiogenesis have often been associated to angiogenesis-dependent pathologies. A variety of animal models have been described to provide more quantitative analysis ofin vivo angiogenesis and to characterize pro- and antiangiogenic molecules. However, it is still necessary to establish a quantitative, reproducible and specific method for studies of angiogenesis factors and inhibitors. This work aimed to standardize a method for the study of angiogenesis and to investigate the effects of thalidomide on angiogenesis. Sponges of 0.5 x 0.5 x 0.5 cm were implanted in the back of mice groups, control and experimental (thalidomide 200 mg/K/day by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Angiogenesis model; Hemoglobin measurement; Sponge implant; Thalidomide.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401483

Acetone extract from Streptoverticillium sp., a bacterium isolated from Brazilian Cerrado soil, induces anti-inflammatory activity in mice
Provedor de dados: 42
Autores: CRUZ,RODRIGO B. DA; GALDINO,PABLINNY M.; PENNA,KARLLA G.B.D.; HOFFMANN,KAREN; COSTA,ELSON A.; BATAUS,LUIZ A.M.
The Streptoverticillium sp. Z1 is an actinomycete isolated from the soil under Cerrado vegetation, the extract of this strain was investigated in nociceptive and inflammatory models. The Streptoverticillium extract (ExS) 50 and 100 mg/kg (s.c.) produced a significant inhibition of acetic acid-induced abdominal writhings thereby demonstrating an anti-nociceptive effect. In the tail flick test the ExS (s.c.) was inactive. This result implited that ExS does not contain opioid-like compounds with central analgesic properties. In the inflammatory models, ExS 100 and 200 mg/kg (s.c.) were able to inhibit the croton oil-induced ear edema and, ExS 200 and 500 mg/kg (s.c.) inhibited the leukocyte migration on the carrageenan-induced peritonitis. The phospholipase...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Streptoverticillium; Anti-inflammatory effect; Nociceptive and inflammatory models; Phospholipase A2 activity.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200595

Morphological and hematological studies ofTrypanosoma spp. infecting ornamental armored catfish from Guamá River-PA, Brazil
Provedor de dados: 42
Autores: Fujimoto,Rodrigo Y.; Neves,Mikaelle S.; Santos,Rudã F.B.; Souza,Natalino C.; Couto,Márcia V.S. do; Lopes,Josiane N.S.; Diniz,Daniel G.; Eiras,Jorge C.
A total of 281 specimens of freshwater armored ornamental fish species (Leporacanthicus galaxias, Lasiancistrus saetiger,Cochliodonsp., Hypostomussp.,Pseudacanthicus spinosus, Ancistrussp. andRineloricariacf. lanceolata) were captured at the hydrological basin of Guamá River, Pará, Brazil. The infection by Trypanosoma spp. was inspected. The morphological and morphometric characterization of the parasites and the hematological parameters were determined. Leporacanthicus galaxias andPseudacanthicus spinosus presented 100% infection prevalence, and the other species showed a variable prevalence of infection. The parasites showed clearly different morphotypes and dimensions, and probably belong to different species. The hematological response to the infection...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Freshwater fish; Hematological parameters; Infection; Trypanosoma spp.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000301149

Assessing rainfall erosivity indices through synthetic precipitation series and artificial neural networks
Provedor de dados: 42
Autores: CECíLIO,ROBERTO A.; MOREIRA,MICHEL C.; PEZZOPANE,JOSé EDUARDO M.; PRUSKI,FERNANDO F.; FUKUNAGA,DANILO C.
The rainfall parameter that expresses the capacity to promote soil erosion is called rainfall erosivity (R), and is commonly represented by the indexes EI30 and KE&gt;25. The calculations of these indexes requires pluviographical records, that are difficult to obtain in Brazil. This paper describes the use of synthetic rainfall series to compute EI30 and KE&gt;25 in Espírito Santo State (Brazil). Artificial neural networks (ANNs) were also developed to spatially interpolate R values in Espírito Santo. EI30 and KE&gt;25 indexes values were close to those calculated on a homogeneous area according to the similarity of rainfall distribution; indicating the applicability of the use of synthetic rainfall series to estimate the R factor. ANNs had a better...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Interpolation; Rainfall generator; Soil conservation; Universal soil loss equation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401523

Heavy metals partitioning in the Rodrigo de Freitas lagoon; larvicidal potential of a new essential oil against Aedes aegypti; and the socioeconomic impact of tourism due to wild dolphins provisioning
Provedor de dados: 42
Autores: KELLNER,ALEXANDER W.A.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401215

Chemical, enzymatic and cellular antioxidant activity studies of Agaricus blazei Murrill
Provedor de dados: 42
Autores: HAKIME-SILVA,RICARDO A.; VELLOSA,JOSÉ C.R.; KHALIL,NAJEH M.; KHALIL,OMAR A.K.; BRUNETTI,IGUATEMY L.; OLIVEIRA,OLGA M.M.F.
Mushrooms possess nutritional and medicinal properties that have long been used for human health preservation and that have been considered by researchers as possible sources of free radical scavengers. In this work, the antioxidant properties of water extracts from Agaricus blazei Murill, produced by maceration and decoction, are demonstrated in vitro. Resistance to oxidation is demonstrated through three mechanisms: i) inhibition of enzymatic oxidative process, with 100% inhibition of HRP (horseradish peroxidase) and MPO (myeloperoxidase); ii) inhibition of cellular oxidative stress, with 80% inhibition of the oxidative burst of polymorphonuclear neutrophils (PMNs); and iii) direct action over reactive species, with 62% and 87% suppression of HOCl and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agaricus blazei Murrill; Antioxidant; Oxidant species; Chemiluminescence; Polymorphonuclear neutrophils.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000301073

Morphology of sympathetic chain in Saguinus niger
Provedor de dados: 42
Autores: PINTO,MARINA P.E.; BRANCO,ÉRIKA; FIORETTO,EMERSON T.; PEREIRA,LUIZA C.; LIMA,ANA R.
Saguinus niger popularly known as Sauim, is a Brazilian North primate. Sympathetic chain investigation would support traumatic and/or cancer diagnosis which are little described in wild animals. The aim of this study was to describe the morphology and distribution of sympathetic chain in order to supply knowledge for neurocomparative research. Three female young animals that came death by natural causes were investigated. Animals were fixed in formaldehyde 10% and dissected along the sympathetic chain in neck, thorax and abdomen. Cranial cervical ganglion was located at the level of carotid bifurcation, related to carotid internal artery. In neck basis the vagosympathetic trunk divides into the sympathetic trunk and the parasympathetic vagal nerve....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anatomy; Primate; Saguinus niger; Sympathetic chain.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000100365

Effect of l-glutamine on myenteric neuron and of the mucous of the ileum of diabetic rats
Provedor de dados: 42
Autores: TRONCHINI,ELEANDRO A.; TREVIZAN,ALINE R.; TASHIMA,CRISTIANO M.; FREITAS,PRISCILA DE; BAZOTTE,ROBERTO B.; PEREIRA,MARLI A.S.; ZANONI,JACQUELINE N.
The objective of this work was to investigate the effect of the L-glutamine supplementation to prevent - diabetes induced changes in myenteric neurons and also to verify the effect on the mucosa of the ileum of Wistar rats. The animals were divided in five groups (n = 5): untreated normoglycaemic (UN), normoglycaemic treated with L-glutamine (NG), untreated diabetics (UD), diabetics treated with L-glutamine, starting on the 4th (DG4) or 45thday following diabetes induction (DG45). The amino acid was added to the diet at 1%. The density and size of neurons, the metaphasic index in the crypt, the height of the villus, the depth of the crypt and the number of globet cells were determined. There was no difference in the neuronal density and in the cellular...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diabetes mellitus; L-glutamine; Myenteric plexus; Myosin-V; Rats.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000301165

Histological evaluation of the periodontal ligament from aged wistar rats supplemented with ascorbic acid
Provedor de dados: 42
Autores: Zanoni,Jacqueline N.; Lucas,Nathalia M.; Trevizan,Aline R.; Souza,Ivan D.S.
Ascorbic acid (AA) is able to neutralize reactive oxygen species and is essential for collagen synthesis. In aging process oxidative stress is elevated. This study aims to investigate the effects of AA supplementation on the periodontal ligament (PL) of rats during aging. Twenty five rats were used and divided into groups: J90 (90-day-old control), E345 (345-day-old control), E428 (428-day-old control), EA345 (345-day-old supplemented with AA from 90-day-old on) and EA428 (428-day-old supplemented with AA from 90-day-old on). We analyzed the thickness, density of fibroblasts and blood vessels and collagen fibers types in the PL. In group J90 there was predominantly type III collagen fibers (87.64%). In animals supplemented with AA, the area filled by type...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aging; Ascorbic acid; Collagen; Periodontal ligament.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000100327

Risk analysis in the spillway of dam Orós by excess of influent flow
Provedor de dados: 42
Autores: Goes Filho,Adbeel.
This paper presents the practical application of concepts, and some methods of risk analysis, to check the possibility of overcoming a water level of project in the spillway of dam Orós, by excess of influent flow. Also evaluated the empirical formulas contained in the original design. Due to the difficulty of obtaining design data from the dam, since the end of construction date of January, 11, 1961, we minimize the effects of some variables in the calculations, leading us to the consequent simplification of the scenario under study. For a better evaluation and characterization of the setting, some variables in the model such as water level, accumulation and flow of the spillway, had updated their data to June 28, 2011. We have demonstrated the importance...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Risk analysis; Public dams; Reservoirs; Water resources management.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000100405

Caspase-3 activation and increased procollagen type I in irradiated hearts
Provedor de dados: 42
Autores: Ferreira-Machado,Samara C.; Salata,Camila; Rocha,Nazareth N.; Corrêa,Alexandre F.S.; Côrte-Real,Suzana; Peregrino,Antônio A.F.; Campos,Vera M.A. de; Andrade,Cherley B.V.; Bernardo-Filho,Mario; Cabral-Neto,Januário B.; Dealmeida,Carlos E.
The caspase-3-cleaved presence was evaluated in this study in the heart of irradiated rats, during the decline of ventricular function. Female Wistar rats were irradiated with a single dose of radiation (15 Gy) delivered directly to the heart and the molecular, histological and physiological evaluations were performed at thirteen months post-irradiation. The expressions of procollagen type I, TGF-ß1 and caspase-3-cleaved were analyzed using Western blotting. Cardiac structural and functional alterations were investigated by echocardiography and electron microscopy. In the irradiated group, the levels of procollagen type I, TGF-ß1 and caspase-3-cleaved are increased. Significant histological changes (degeneration of heart tissue and collagen deposition) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Apoptosis; Caspase-3; Fibrosis; Heart; Ionizing radiation; TGF-β1.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000100215

Testing arbitrary classes of light in a physiognomically heterogeneous area of "campo rupestre" vegetation
Provedor de dados: 42
Autores: MOREIRA,ANA S.F.P.; BORBA,EDUARDO L.; LEMOS-FILHO,JOSE P.
The Brazilian "campo rupestre" vegetation shows high light heterogeneity, characteristic which is often disregarded in ecophysiological studies due the difficult of obtaining accurate measurements in a complex environment. The aim of the present study it was to describe how much heterogeneous is the light distribution in this environment, as well as tried to define classes in relation to the photosynthetically active radiation (PAR) for 30 rupicolous individuals of Bulbophyllum involutum. The individuals were marked and previously classified in light classes visually predetermined ("full sun", "partially shaded" and "shaded"). Once defined these classes, principal component analysis, cluster and dispersal analyses using direct and indirect PAR measures...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bulbophyllum involutum; Habitat; Light heterogeneity; Multivariate analysis; Orchidaceae; Rocky outcrops.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200635

Active polyketides isolated from Penicillium herquei
Provedor de dados: 42
Autores: MARINHO,ANDREY M.R.; MARINHO,PATRÍCIA S.B.; SANTOS,LOURIVALDO S.; RODRIGUES FILHO,EDSON; FERREIRA,IZABEL C.P.
In this work we are reporting the isolation by classical methods of chromatography of six polyketides from Penicillium herquei. The compounds citreorosein ( 1) , emodin ( 2) , janthinone ( 3) , citrinin ( 4) , citrinin H1 ( 5) and dicitrinol ( 6) were identified by spectral methods of 1D and 2D NMR and MS. Compounds 1, 2 and 3 were tested against promastigotes forms of Leishmania brasiliensis and 1 and 2 were also assayed against Escherichia coli, Pseudomonas aeruginosa and Bacillus subtilis and showed good activity.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Polyketides; Biological assay; P. herquei.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000300909

Regional movements of the tiger shark, Galeocerdo cuvier, off northeastern Brazil: inferences regarding shark attack hazard
Provedor de dados: 42
Autores: HAZIN,FÁBIO H.V.; AFONSO,ANDRÉ S.; CASTILHO,PEDRO C. DE; FERREIRA,LUCIANA C.; ROCHA,BRUNO C.L.M.
An abnormally high shark attack rate verified off Recife could be related to migratory behavior of tiger sharks. This situation started after the construction of the Suape port to the south of Recife. A previous study suggested that attacking sharks could be following northward currents and that they were being attracted shoreward by approaching vessels. In this scenario, such northward movement pattern could imply a higher probability of sharks accessing the littoral area of Recife after leaving Suape. Pop-up satellite archival tags were deployed on five tiger sharks caught off Recife to assess their movement patterns off northeastern Brazil. All tags transmitted from northward latitudes after 7-74 days of freedom. The shorter, soak distance between...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Migration; Recife; Satellite telemetry; Shark attack; Suape.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000301053

Effect of Carbon dioxide (CO2) on mortality and reproduction of Anagasta kuehniella (Zeller 1879), in mass rearing, aiming at the production of Trichogramma spp.
Provedor de dados: 42
Autores: COELHO JUNIOR,ALOISIO; PARRA,JOSE R.P.
Eggs of Anagasta kuehniella (Zeller 1879) are widely used for mass rearing of Trichogramma spp. and other parasitoids and predators, largely commercialized in many countries. The aim of this study is to evaluate the effect of carbon dioxide (CO2) originated from larval metabolism on the biological parameters of A. kuehniella. For that purpose, we assess the production of carbon dioxide (CO2) per rearing tray of A. kuehniella and the effect of CO2 on the viability of egg-to-adult period and oviposition of A. kuehniella. Results allow to estimate that a rearing tray, containing 10,000 larvae between the 4th and 5th instars, produces an average of 30.67 mL of CO2 per hour. The highest egg production of A. kuehniella was obtained when the larvae were kept in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mass rearing; Factitious host; Abiotic factor; Carbon dioxide.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200823

Is the secondary thickening in palms always diffuse?
Provedor de dados: 42
Autores: BOTÂNICO,MARLI P.; ANGYALOSSY,VERONICA.
Unlike other arboreal monocotyledons, the secondary growth of palms has for the past 100 years been described as diffuse. Solely cell enlargement and random parenchyma divisions, without the activity of a meristem, characterize such growth. Some previous works of the early 20th century have, however, mentioned the presence of a secondary meristem in the stems of palms, but this information was forgotten since then. Addressing to this question, we analysed palm stems of four species, with the aim to understand the possible presence of such secondary growth. We found that a meristematic band occurs between the cortex and the central cylinder and gives rise to new vascular bundles and parenchyma internally, producing parenchyma and fibres externally. It...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aerial stem; Meristematic band; Palms; Secondary growth; Stem anatomy; Subterranean stem.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401461

The Role of the Humic Substances in the Fractioning of Heavy Metals in Rodrigo de Freitas Lagoon, Rio de Janeiro - Brazil
Provedor de dados: 42
Autores: FONSECA,ESTEFAN M. DA; BAPTISTA NETO,JOSÉ A.; MCALISTER,JOHN; SMITH,BERNARD; FERNANDEZ,MARCOS A.; BALIEIRO,FABIANO C.
One of the main results of the processes related to urbanization is the contamination of the adjacent water bodies. Inserted in this context, the Rodrigo de Freitas lagoon is situated in the south zone of the city of Rio de Janeiro. This ecosystem receives several inputs containing all sorts of pollutants, including heavy metals. The present work aimed to study the partitioning of heavy metals in the sediments of Rodrigo de Freitas and the influence of organic matter in this fractionation dynamic. The results of these analyses presented the contents of organic matter as an important metal-capturing agent. Fractionation of organic matter resulted in a predominance of humine. Heavy metal partitioning showed that the metals bound by the water-soluble phase...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brazil; Rio de Janeiro; Rodrigo de Freitas lagoon; Heavy metals; Humic acids.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401289

New turtle egg fossil from the Upper Cretaceous of the Laiyang Basin, Shandong Province, China
Provedor de dados: 42
Autores: WANG,QIANG; WANG,XIAOLIN; ZHAO,ZIKUI; ZHANG,JIALIANG; JIANG,SHUNXING.
A new type of turtle egg fossil was established: Emydoolithus laiyangensis oogen. et oosp. nov.. Based on its elliptical morphological shape, rigid eggshells, and eggshell characteristics, it is different from other types of round chelonian egg fossils. It is the second chelonian egg fossil found in Cretaceous in China. This discovery shows the Laiyang ecosystem in Late Cretaceous is more diversified than previously thought.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Turtle egg fossil; Jingangkou Formation; Late Cretaceous; Laiyang Basin; Shandong Province.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000100103

The Brazilian research contribution to knowledge of the plant communities from Antarctic ice free areas
Provedor de dados: 42
Autores: PEREIRA,ANTONIO B.; PUTZKE,JAIR.
This work aims to summarize the results of research carried out by Brazilian researchers on the plant communities of Antarctic ice free areas during the last twenty five years. Since 1988 field work has been carried out in Elephant Island, King George Island, Nelson Island and Deception Island. During this period six papers were published on the chemistry of lichens, seven papers on plant taxonomy, five papers on plant biology, two studies on UVB photoprotection, three studies about the relationships between plant communities and bird colonies and eleven papers on plant communities from ice free areas. At the present, Brazilian botanists are researching the plant communities of Antarctic ice free areas in order to understand their relationships to soil...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Scientific publication; Botany; South Shetlands Island; Antarctica.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000300923

Effects of diet supplementation with Camu-camu (Myrciaria dubia HBK McVaugh) fruit in a rat model of diet-induced obesity
Provedor de dados: 42
Autores: Nascimento,Ozanildo V; Boleti,Ana P.A; Yuyama,Lucia K.O; Lima,Emerson S.
Amazonian Camu-camu fruit (Myrciaria dubia HBK Mc Vaugh) has attracted interest from food and cosmetics industries because of its rich content of vitamin C, flavonoids and anthocyanins. The goal of this study was investigates the antiobesity action of the ingestion of the Camu-camu pulp in a rat model of diet-induced obesity. Wistar rats with obesity induced by subcutaneous injection of monosodium glutamate receiving diet ad libitum. The rats were divided in two groups: an experimental group that ingested 25 mL/day of Camu-camu pulp (CCG) and a non treated group (CG). After 12 weeks, the animals were sacrificed. Blood, liver, heart, white adipose tissues were collected and weighted, biochemical and inflammatory profiles were determinate as well. Animals...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazonian fruit; Flavonoids; Lipid profile; Myrciaria dubia; Obesity.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000100355

The effect of temperature on the germination of Melocactus violaceus Pfeiff. (Cactaceae), a threatened species in restinga sandy coastal plain of Brazil
Provedor de dados: 42
Autores: ZAMITH,LUIZ R.; CRUZ,DENISE D.; RICHERS,BARBARA T.T.
Melocactus violaceus is an endangered species due to habitat destruction and the overcollection of this species for ornamental use. The aim of this study was to test the effect of different temperatures on the germination of M. violaceus. Three treatments were conducted: a constant temperature of 25ºC, a 20-35ºC alternating temperature, both inside germination chamber, and an alternating temperature under room temperature (mean temperature ranged from 25-37ºC). The final seed germination rates at the alternating temperature treatments were not significantly different (65% in the seed germinator and 62.5% at room condition). However, both treatments with alternating temperatures had significantly higher germination rates compared to the treatment kept at...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cactaceae; Conservation; Germination; Melocactus violaceus; Restinga; Temperature.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200615

Postharvest conservation of the tuberous roots of Pachyrhizus Ahipa (Wedd) Parodi
Provedor de dados: 42
Autores: MUSSURY,ROSILDA M.; SCALON,SILVANA P.Q.; SILVA,MAGAIVER A.; SILVA,TATIANE F.; GOMES,HELLEN; GASSI,ROSIMEIRE.
This paper aimed to evaluate the effects of storage periods on the conservation of Pachyrhizus ahipa roots at different temperatures and packaging materials. The roots were harvested, washed, packed in PVC, plastic bags, without wrappings (control) and stored in polystyrene trays in refrigerators, or cold chambers, or at room temperature. Total titratable acidity (TTA), total soluble solids (TSS), pH, as well as their ash, lipid, total carbohydrate and protein (dry basis) contents were analyzed. The lowest loss of root fresh weight was observed in the cold chamber and plastic bags. The TTA remained higher among roots stored in the cold chamber and in PVC packaging. The lowest TSS contents were observed for roots stored in the cold chamber, and these did...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Yam bean; Storage conditions; Packaging; Preservation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200761

Are sun- and shade-type anatomy required for the acclimation of Neoregelia cruenta?
Provedor de dados: 42
Autores: REINERT,FERNANDA; LEAL-COSTA,MARCOS V.; JUNQUEIRA,NICIA E.; TAVARES,ELIANA S.
Sun and shade plants are often discriminated by a number of sun- and shade-type anatomies. Nonetheless, we propose that among tank-bromeliads, changes in rosette architecture satisfy the requirements for coping with contrasting light levels. The tank-bromeliad Neoregelia cruenta naturally colonises sub-habitats ranging from full exposure to direct sunlight, to shaded environments in sand ridge plains. We quantified anatomical and morphological traits of leaves and rosettes of N. cruenta grown under sun and shade conditions. Cells with undulated lateral walls within the water parenchyma are for the first time described for the family. Under high light, leaf blades were wider, shorter, and yellowish. The rosette diameter of sun plants was less than half that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bromeliaceae; Crown architecture; Leaf anatomy; Plant morphology.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200561

Tau, APP, NCT and BACE1 in lymphocytes through cognitively normal ageing and neuropathology
Provedor de dados: 42
Autores: HERRERA-RIVERO,MARISOL; SOTO-CID,ABRAHAM; HERNáNDEZ,MARíA E.; ARANDA-ABREU,GONZALO E.
Although Alzheimer's disease is a brain disorder, a number of peripheral alterations have been found in these patients; however, little is known about how the key genes involved in the pathophysiology express in peripheral cells such as lymphocytes during normal compared to neuropathological ageing. We analysed the expression of tau, of the amyloid precursor protein, of nicastrin and of the β-site APP cleaving enzyme genes by RT-PCR in lymphocytes from a small group of late-onset Alzheimer's disease patients, from aged patients suffering from neuropsychological conditions different from Alzheimer's and from cognitively healthy subjects divided in four groups by age. We also investigated correlations between gene expression and levels of blood pressure,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alzheimer's disease; APP; BACE1; Nicastrin; Normal ageing; Risk factors.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401489

Evaluation of the photodynamic activity of Xanthene Dyes on Artemia salina described by chemometric approaches
Provedor de dados: 42
Autores: Pellosi,Diogo S.; Batistela,Vagner R.; Souza,Vagner R. de; Scarminio,Ieda S.; Caetano,Wilker; Hioka,Noboru.
The development of drugs for photodynamic therapy (PDT) is an important area of research due to their growing use in medical applications. Therefore, it is important to develop new bioassay methods for PDT photosensitizers that are inexpensive, easy to handle and highly sensitive to environmental conditions. Xanthene dyes (fluorescein, rose bengal B, erythrosine B and eosin Y) with LED light sources were investigated using Artemia salina as a bioindicator of photodynamic activity. In this study, three factors were investigated: (i) photosensitizers concentration, (ii) the LED irradiation time and (iii) the waiting time between the addition of the photosensitizers and the beginning of the irradiation. To analyze the photo-killing of A. salina, it was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Artemia salina; Factorial design; Photodynamic therapy; Bioassay; Xanthenes.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401267

Environmental pathways and human exposure to manganese in southern Brazil
Provedor de dados: 42
Autores: HERMES,NADIR; SCHNEIDER,ROSANA C.S.; MOLIN,DANIELA D.; RIEGEL,GUILHERME Z.; COSTA,ADILSON B.; CORBELLINI,VALERIANO A.; TORRES,JOÃO P.M.; MALM,OLAF.
The study of environmental pathways and human exposure to Manganese (Mn) in Southern Brazil was performed using two steps. The first step consisted of taking water samples from the surface of the Pardinho River. The average results from this technique showed a significant increase of pollutants, including increased levels of Mn, above the environmentally acceptable standard recommended by the Brazilian National Environment Council. Additionally, 64 soil samples were taken from areas with and without agricultural activity. Many results were above the mean crust and did not indicate significant differences of Mn levels between the sampled areas. For the second step, 12 families were selected and assessed for exposure to Mn in a region with high levels of Mn...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Manganese; Human exposure; Environmental levels; Mn.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401275

Fermentation characteristics in stirred-tank reactor of exopolysaccharides with hypolipidemic activity produced by Pleurotus geesteranus5#
Provedor de dados: 42
Autores: DUOBIN,MAO; YUPING,MA; LUJING,GENG; AIJING,ZHAO; JIANQIANG,ZHENG; CHUNPING,XU.
In this study, the hypolipidemic effect of exopolysaccharides (EPS) fromPleurotus geesteranus 5# fermenting liquor by the optimal culture conditions in a 5-L stirred-tank reactor was investigated. The hypolipidemic effect of the polysaccharide, investigated in streptozotocin induced diabetic mice, decreased plasma glucose, total cholesterol and triacylglycerol concentrations by 17.1 %, 18.8 % and 12.0 %, respectively. The results of the present investigation strongly demonstrate the potential of this polysaccharide to prevent hyperglycemia in the experimental animals. Under optimal culture conditions, the maximum concentrations of mycelial and EPS were 22.63 g/L after 7 d cultivation and 11.09 g/L after 10 d, respectively. Furthermore, the morphological...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Exopolysaccharides; Pleurotus geesteranus; Fermentation; Hypolipidemic effect; Morphology.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401473

Reproductive phenology in a riparian rainforest in the south of Santa Catarina state, Brazil
Provedor de dados: 42
Autores: CASCAES,MAINARA F.; CITADINI-ZANETTE,VANILDE; HARTER-MARQUES,BIRGIT.
Phenological studies assist in forest ecosystems comprehension and evaluation of resource availability for wildlife, as well as in improving the understanding of relationships between plants and their pollinators and dispersers. This study aims to describe the reproductive phenophases of riparian plant species and correlate them with climatic variables. The reproductive phenology was analyzed biweekly throughout one year, recording the absence or presence of flowers/fruits. The flowering phenophase occurred throughout the year, with an increase in number of species in blossom in October, November, and December. The flowering peak of the community was observed in November. The fruiting phenophase also occurred throughout the year and showed an increase of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Flowering; Fruiting; Riparian forest; Climatic variables.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401449

Manejo do milheto em pastoreio rotativo para maximizar a taxa de ingestão por vacas leiteiras
Provedor de dados: 45
Autores: Mezzalira,J.C.; Carvalho,P.C.F.; Amaral,M.F.; Bremm,C.; Trindade,J.K.; Gonçalves,E.N.; Genro,T.C.M.; Silva,R.W.S.M.
Avaliaram-se os efeitos da estratégia de pastoreio rotacionado sobre a dinâmica do rebaixamento do milheto (Pennisetum glaucum (L.) R. Br.) pastejado por vacas leiteiras. Os tratamentos consistiram de um fatorial entre duas alturas pré-pastejo, 60 e 40cm, e duas pós-pastejo, 20 e 10cm, alocados em um delineamento em blocos ao acaso com quatro repetições. A estrutura do pasto foi avaliada durante o processo de pastejo a cada 10 minutos, por meio de medições de altura. A taxa de rebaixamento da altura do pasto no tratamento 40-20 apresentou-se relativamente constante ao longo de todo o rebaixamento. O tratamento 60-10 apresentou o maior declínio na taxa de rebaixamento. A taxa de rebaixamento no tratamento 40-10 diminuiu em ritmo mais lento em relação à dos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Estrutura do pasto; Pennisetum glaucum; Vacas leiteiras; Taxa de ingestão.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300032

A case report of renal cell carcinoma in a dog
Provedor de dados: 45
Autores: Paşca,A.-S.; Lazăr,M.
Mix renal carcinoma was noticed during the necropsic examination of a 14 year old mix breed female. Tumours were bilateral and metastasis was noticed in the spleen and myocard. Histological examination evidenced morphological aspects characteristic to the mixt renal carcinoma. Histological aspects described in this individual characterize renal cell carcinoma, also known as renal adenocarcinoma, hypernephroma or, in older literature, Grawitz tumour.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dog; Renal carcinoma; Pathology.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500004

Cateterismo posterior do plexo braquial em cão: estudo radiológico e avaliação de três protocolos anestésicos na duração do bloqueio motor e sensitivo
Provedor de dados: 45
Autores: Teixeira,A.N.; Jesus,P.O.B.; Antunes,F.; Mota,B.A.
Avaliou-se a eficiência do cateterismo posterior do plexo braquial em cães para promover bloqueio motor e sensitivo, por meio de três protocolos anestésicos. Foram utilizados nove cães, machos e fêmeas, sem distinção de raça e idade, com peso variando de 6 a 15kg, distribuídos em três grupos de três animais por grupo. Após a confirmação do correto posicionamento do cateter pela via posterior do plexo braquial por meio do exame radiográfico, foram aplicadas as medicações de acordo com os grupos. No grupo 1, a solução anestésica de bupivacaína 0,5% sem vasoconstrictor, na dose de 2mg.kg-1, foi usada isoladamente. No grupo 2, a solução anestésica de bupivacaína foi associada ao butorfanol na dose de 0,25mg.kg-1 . No grupo 3, o fentanil, na dose de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cão; Bloqueio posterior do plexo braquial; Bupivacaína; Butorfanol; Fentanil.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300008

Osteossíntese de mandíbula e maxila em equinos adultos: relato de quatro casos
Provedor de dados: 45
Autores: Nóbrega,F.S.; Ferreira,M.P.; Alievi,M.M.; Beck,C.A.C.; Gonzalez,P.C.; Dal-Bó,I.S.; Stédile,R.
Fraturas da mandíbula secundárias a trauma externo não são raras em equinos, sendo este o osso mais comumente fraturado quando o trauma é na região da cabeça. Na maioria dos casos, são abertas e com dano aos tecidos moles adjacentes. Como os ossos da cabeça não são submetidos às forças de carga do apoio, a exigência para fixação da fratura é menos desafiadora. O presente trabalho descreve o tratamento cirúrgico de quatro fraturas de mandíbula em equinos, sendo que, em um caso, havia também fratura de maxila. Quatro cavalos adultos com histórico de traumatismo na região da cabeça foram atendidos, avaliados clinicamente, radiografados e, após diagnóstico, submetidos a tratamento cirúrgico. No primeiro caso, o equino apresentava fratura rostral da mandíbula,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cavalo; Fratura; Placa; Cerclagem; Osso.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600018

Níveis de cloro da ração sobre parâmetros sanguíneos e ósseos de codornas italianas destinadas à produção de carne
Provedor de dados: 45
Autores: Freitas,E.R.; Xavier,R.P.S.; Nascimento,G.A. Jerônimo do; Rodrigues,A.M.; Queiroz,M.G.R.; Raquel,D.L.; Lima,R.C.
Avaliaram-se diferentes níveis de cloro da ração sobre os parâmetros sanguíneos e o desenvolvimento ósseo de codornas destinadas à produção de carne. Foram utilizadas 384 codornas italianas de um a 49 dias de idade, distribuídas em delineamento inteiramente ao acaso, com seis tratamentos e oito repetições de oito aves. Os tratamentos consistiram de rações isonutrientes, exceto para o nível de cloro, que foram: 0,07; 0,12; 0,17; 0,22; 0,27 e 0,32%. Aos 49 dias, foram selecionadas duas aves por parcela para as coletas do sangue e das tíbias. Foram avaliados o pH e as concentrações de Na, Cl e K no sangue, bem como o comprimento, o diâmetro, o peso, o teor de matéria seca e cinzas, o índice de Seedor e a resistência à quebra e deformidade da tíbia. Os níveis...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Desenvolvimento ósseo; Equilíbrio ácido-base; Índice de Seedor.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600031

An anatomopathological study of hepatic coccidiosis (Calyptospora sp.) in the Acará-pixuna, Aequidens plagiozonatus Kullander, 1984 from the Brazilian state of Pará
Provedor de dados: 45
Autores: Videira,M.; Velasco,M.; Tortelly,R.; Menezes,R.C.; São Clemente,S.C.; Matos,E.
The present study focuses on the anatomopathological alterations provoked by parasitism by Calyptospora sp. in 40 specimens of Aequidens plagiozonatus collected in Pará, Brazil. Examinations of the fresh material by compression of the hepatopancreas and histological sections showed immature forms and oocysts characteristic of the genus Calyptospora, in addition to a large quantity of melanomacrophagic centers spread throughout the organ. No significant inflammation of the hepatic tissue was observed. The melanomacrophagic centers and the compression of the hepatocytes are part of the response of the host to the parasite. This study represents the first record of parasitism by Calyptospora in A. plagiozonatus.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fish; Acará-pixuna; Parasite; Coccidio; Calyptospora; Pathology.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100014

Seleção de características morfofuncionais de cavalos da raça Mangalarga Marchador por meio da análise de componentes principais
Provedor de dados: 45
Autores: Meira,C.T.; Pereira,I.G.; Farah,M.M.; Pires,A.V.; Garcia,D.A.; Cruz,V.A.R.
Dados de 14.288 animais da raça Mangalarga Marchador, nascidos de 1990 a 2005, foram utilizados para avaliar a redução da dimensionalidade do espaço multivariado para características morfofuncionais, por meio da análise de componentes principais. Foram consideradas as características: altura na cernelha, altura na garupa, comprimento da cabeça, comprimento do pescoço, comprimento do dorso, comprimento da garupa, comprimento da espádua, comprimento do corpo, largura da cabeça, largura das ancas, perímetro do tórax, perímetro da canela e a pontuação da marcha. Para tais características, obtiveram-se sete componentes principais, a partir da matriz de correlação, que apresentaram variância inferior a 0,7 (autovalor inferior a 0,7). Isso sugere sete variáveis...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Análise multivariada; Andamento; Descarte de variáveis; Equino; Medidas lineares.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600036

Casuística dos exames de diagnóstico por imagem na medicina de animais selvagens - 2009 a 2010
Provedor de dados: 45
Autores: Bortolini,Z.; Matayoshi,P.M.; Santos,R.V.; Doiche,D.P.; Machado,V.M.V.; Teixeira,C.R.; Vulcano,L.C.
The aim of this study was to retrospectively evaluate in the casuistry on class and systems frequently diagnosed in wild animals that were sent to the FMVZ-UNESP-Botucatu diagnostic imaging service. The class of birds was the most referred to the centers, followed by the mammals and reptiles. The majority of the requested tests were the radiographs and in a minor scale the tomography and ultrasound. Although the birds were the greatest number of animals sent to the service, mammals were the most radiographed for wound control. The most frequently observed system was the musculoskeletal caused by trauma, especially in birds. The radiograph was the most exam initially indicated, then the animal could be forwarded to other imaging modalities, which in wild...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ultrassonografia; Radiologia; Tomografia computadorizada; Animais silvestres; Diagnóstico por imagem.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400042

Transitional carcinoma with extensive invasion of the bony orbit in a dog
Provedor de dados: 45
Autores: Paiva,S.C.C.S.; Werner,J.; Montiani-Ferreira,F.; Froes,T.R.; Machado,M.; Olbertz,L.; Lima,L.; Langohr,I.
A 12-year-old male English Pointer was examined due to a soft-tissue swelling at the medial canthus of the right orbital region, which was causing facial deformity. The dog had epiphora, purulent nasal discharge, epistaxis, dyspnea, and progressive weight loss. An intraoral mass was observed near the right maxillary premolars. Neoplastic disease was diagnosed based on ancillary tests, which included blood work, skull and intraoral radiographs, ocular ultrasonography and computed tomography. Histopathology revealed transitional carcinoma involving the nasal and oral cavities, maxilla, bony orbit and retrobulbar space. Nasal tumors represent approximately 2% of all tumors diagnosed in this species. Transitional carcinoma is the second most common type of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Respiratory neoplasm; Orbital neoplasm; Retrobulbar mass; Computed tomography.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400012

Níveis de fósforo disponível em dietas para suínos dos 15 aos 30kg
Provedor de dados: 45
Autores: Viana,J.M.; Brustolini,P.C.; Silva,F.C.O.; Saraiva,A.; Donzele,J.L.; Oliveira,R.F.M.; Ferreira,A.S.; Santos,F.A.; Paula,E.
Avaliou-se a suplementação de dietas com fósforo disponível (Pd) para suínos selecionados para deposição de carne, utilizando-se 100 leitões com média de peso inicial de 15,03±0,33kg, distribuídos em delineamento de blocos ao acaso, com cinco tratamentos, cinco repetições e quatro animais por unidade experimental. Os tratamentos foram dieta basal sem suplementação de fosfato bicálcico e outras quatro dietas obtidas pela suplementação da dieta basal com fosfato bicálcico, resultando em cinco concentrações de Pd, 0,106; 0,221; 0,310; 0,406; e 0,493%. As porcentagens de Pd influenciaram o consumo diário de ração, que aumentou de forma linear. O ganho de peso diário aumentou e a conversão alimentar melhorou de forma quadrática até a suplementação máxima de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Desempenho; Exigência; Fase inicial; Minerais; Suíno.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100030

Estudo comparativo da proteína do feno de maniçoba em relação à proteína do feno de alfafa na ração de coelhos
Provedor de dados: 45
Autores: Brito,M.S.; Silva,J.H.V.; Costa,F.G.P.; Givisiez,P.E.N.; Pascoal,L.A.F.; Oliveira,E.R.A.; Lima,R.B.; Silva,T.R.G.; Santos,J.G.; Watanabe,P.H.
O presente experimento foi conduzido com o objetivo de avaliar a substituição parcial da proteína bruta (PB) do feno da alfafa (FA) pela PB do feno de maniçoba (FM) na alimentação de coelhos em crescimento, bem como o valor nutricional da proteína bruta do feno de maniçoba. Foram estudados os parâmetros de desempenho, digestibilidade, rendimento de carcaça e dos cortes nobres submetidos às dietas experimentais. Os tratamentos consistiram em quatro níveis de substituição (0, 25, 50 e 75%) da proteína do feno de alfafa pelo feno de maniçoba. A substituição crescente dos níveis de feno maniçoba resultou em um aumento linear no consumo de ração e no ganho de peso de forma quadrática aos 83 dias, mostrando que esse ingrediente pode ser utilizado como substituto...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cunicultura; Digestibilidade; Manihot pseudoglaziovii; Valor nutricional.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100038

Efeitos do momento de transferência dos ovos para o nascedouro e da idade da matriz pesada sobre o rendimento de incubação
Provedor de dados: 45
Autores: Barbosa,V.M.; Rocha,J.S.R.; Baião,N.C.; Mendes,P.M.M.; Pompeu,M.A.; Lara,L.J.C.; Miranda,D.J.A.; Carvalho,G.B.; Cardoso,D.M.; Cunha,C.E.; Martins,N.R.S.; Leite,R.C.
Foram avaliados os efeitos do momento de transferência dos ovos da incubadora para o nascedouro e da idade da matriz pesada sobre o rendimento de incubação. Os tratamentos foram definidos pela idade das matrizes Cobb®, sendo considerados ovos de matrizes novas (33 semanas) e ovos de matrizes velhas (63 semanas), e pelos momentos de transferência da câmara de incubação para os nascedouros (aos 15, 17 e 19 dias). O delineamento experimental foi inteiramente ao acaso em parcelas subdivididas, sendo o fator da parcela os três momentos das transferências e as subparcelas as duas idades das matrizes, com 18 repetições por tratamento. A bandeja com 96 ovos foi considerada a repetição, totalizando 1.728 ovos para cada tratamento. Ovos de matrizes velhas são mais...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Incubação; Matrizes pesadas; Idade da ave; Transferência; Fatores físicos.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600033

Diagnóstico clínico e radiográfico de luxação traumática da articulação atlanto-occipital em dois cães
Provedor de dados: 45
Autores: Araújo,B.M.; Figueiredo,M.L.; Silva,A.C.; Fernandes,T.H.T.; Tudury,E.A.
A luxação da articulação atlanto-occipital é considerada uma afecção incomum no homem e nos animais. Radiografias laterais são recomendadas para o diagnóstico. No entanto, estão sujeitas a erros relacionados ao ângulo de radiação, ao alvo da imagem, à distância e à sobreposição óssea. Objetivou-se neste relato descrever os achados clínicos e radiográficos de dois cães com luxação traumática da articulação atlanto-occipital que apresentavam tetraparesia, dor cervical cranial, incapacidade de elevar a cabeça e déficits de nervos cranianos. No primeiro animal, observaram-se deslocamento craniodorsal do processo articular do atlas em relação a um dos côndilos do occipital, ausência de sobreposição dos forames vertebrais laterais e sobreposição do côndilo do...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Junção craniocervical; Luxação; Critério radiodiagnóstico.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100020

Estudo anatomorfológico, radiográfico e tomográfico de Schistosomus reflexus em ovino da raça Dorper: relato de caso
Provedor de dados: 45
Autores: Ferreira,D.O.L.; Santarosa,B.P.; Monteiro-Toma,C.D.; Belotta,A.F.; Chiacchio,S.B.; Machado,V.M.V.; Gonçalves,R.C.; Prestes,N.C.
O Schistosomus reflexus (SR) é uma anomalia congênita fatal e rara, primariamente observada em ruminantes, a qual apresenta feto com dorsoflexão da coluna vertebral, exposição das vísceras abdominais e torácicas e escoliose. Foi realizada uma cesariana de ovelha da raça Dorper, em propriedade da região de Botucatu-SP. Pelas características gerais e achados de necropsia, tratava-se de um caso de SR. A radiografia revelou acentuado desvio ventrodorsal do segmento da coluna vertebral toracolombar e deformidades das costelas. Na tomografia computadorizada, observou-se presença da integridade dos ossos e órgãos, exceto ausência de uma vértebra lombar. Não havia dados na literatura de diagnóstico por imagem de SR em ovinos, portanto procedeu-se, de forma...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Defeitos congênitos; Monstruosidade fetal; Ruminantes; Radiografia; Tomografia computadorizada.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400022

Cooling of ejaculated and epididymal stallion sperm
Provedor de dados: 45
Autores: Monteiro,G.A.; Guasti,P.N.; Hartwig,F.P.; Dellaqua Jr.,J.A.; Alvarenga,M.A.; Papa,F.O.
After a serious injury or sudden death, epididymis cauda sperm recovery and cryopreservation may present as the last opportunity to obtain genetic material from a valuable stallion. This study evaluated the viability of cooled equine sperm collected by three different methods: sperm of ejaculated (G1), sperm recovered from the epididymal cauda immediately after orchiectomy (G2) and sperm recovered from the epididymal cauda after storage for 24 hours at 5°C (G3). To obtain G1 sperm, two ejaculates were collected. After 1 week, all stallions underwent a bilateral orchiectomy, and one of the removed epididymides was flushed to obtain G2 sperm. The contralateral epididymis was stored at 5°C for 24 hours before being flushed to obtain G3 sperm. The sperm...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Horse epididymal spermatozoa; Cryopreservation; Stallion; Sperm viability; Seminal plasma.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300010

Evaluation of chromium concentration in cattle feces using different acid digestion and spectrophotometric quantification techniques
Provedor de dados: 45
Autores: Souza,N.K.P.; Detmann,E.; Pina,D.S.; Valadares Filho,S.C.; Sampaio,C.B.; Queiroz,A.C.; Veloso,C.M.
The objective of this work was to evaluate combinations between acid digestion techniques and spectrophotometric quantification to measure chromium concentration in cattle feces. Digestion techniques were evaluated based on the use of nitric and perchloric acids, sulfuric and perchloric acids, and phosphoric acid. The chromium quantification in the solutions was performed by colorimetry and by atomic absorption spectrophotometry (AAS). When AAS was used, the addition of calcium chloride to the solutions as a releasing agent was also evaluated. Several standard samples containing known chromium contents were produced (0, 2, 4, 6, 8 and 10g of chromium per kg of feces) using cattle feces obtained from three different animals to evaluate the accuracy of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atomic absorption; Colorimetry; External markers; Chromic oxide.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500028

The effects of parturition season and suckling mode on the puerperium of Santa Ines ewes and on the weight gain of lambs
Provedor de dados: 45
Autores: Oliveira,M.E.F.; Sousa,H.L.L.; Moura,A.C.B.; Vicente,W.R.R.; Rodrigues,L.F.S.; Araújo,A.A.
Seventy-seven ewes were randomly divided into groups according to parturition season and suckling mode [Rainy season: continuous (n=14) and controlled (n=13); Dry season: continuous (n=25) and controlled (n=25)]. The controlled suckling mode, in both seasons, resulted in a decrease in variables, intervals between parturition and first estrus (reduction of 27.11 and 11.46 days for rainy and dry season, respectively; P&lt;0.05) and between parturition and estrus of conception (reduction of 12.81 and 13.58 days, for rainy and dry season, respectively; P&lt;0.05). As to the lambs, the weight gain was higher in animals subjected to controlled suckling in relation to continuous, especially when lambing occurred in the rainy season (17.83±0.56 vs. 13.95±0.52kg...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sheep; Suckling; Puerperium; Weight gain.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300035

Lisina digestível em dietas de baixa proteína para frangos de corte tipo caipira de um aos 28 dias
Provedor de dados: 45
Autores: Oliveira,H.G.; Carrijo,A.S.; Kiefer,C.; Garcia,E.R.M.; Oliveira,J.A.; Silva,J.B.; Freitas,L.N.; Horing,S.F.
Avaliou-se a inclusão de diferentes porcentagens de lisina digestível em dietas de baixa proteína para frangos de corte tipo caipira, machos e fêmeas, com idade entre um e 28 dias. Utilizaram-se 792 machos e 792 fêmeas de linhagem comercial, de um dia de idade, distribuídos em delineamento inteiramente ao acaso, em esquema fatorial 2x6 (sexo x porcentagem de lisina digestível: 0,85; 0,90; 0,95; 1,00; 1,05 e 1,10%) com seis repetições de 22 aves. Não foi constatada interação (P&amp;gt;0,05) de sexo versus inclusão de lisina. Observou-se superioridade (P&lt;0,05) dos machos em relação às fêmeas para todas as variáveis avaliadas. O ganho de peso dos frangos diminuiu linearmente (P&lt;0,05) em função do aumento da porcentagem de lisina digestível na dieta e...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aminoácidos; Carcaça; Desempenho; Frango; Sistema semi-intensivo.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200028

Efeito do armazenamento e da cantaxantina dietética sobre a qualidade do ovo fértil e o desenvolvimento embrionário
Provedor de dados: 45
Autores: Rocha,J.S.R.; Barbosa,V.M.; Lara,L.J.C.; Baião,N.C.; Cançado,S.V.; Lana,A.M.Q.; Pompeu,M.A.; Vasconcelos,R.J.C.; Machado,A.L.C.; Miranda,D.J.A.; Fernandes,M.N.S.; Mendes,P.M.M.
O presente experimento foi conduzido em lote de matrizes Cobb desde 46 até 60 semanas de idade. Os tratamentos foram definidos pelas dietas (com e sem adição de 6ppm de cantaxantina na dieta das matrizes) e pelos períodos de armazenamento dos ovos (três e sete dias), em delineamento inteiramente ao acaso, em arranjo fatorial 2x2 (duas dietas x dois períodos de armazenamento). A cantaxantina dietética elevou o escore de cor da gema de sete para 14. O armazenamento dos ovos por sete dias prejudicou a qualidade dos ovos, promoveu oxidação de ácidos graxos da gema e retardou o desenvolvimento embrionário.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidante; Ácido graxo; Carotenoide; Gema; TBARS.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300027

Relação entre obesidade, insulina plasmática e posicionamento da falange distal em equinos da raça Crioula
Provedor de dados: 45
Autores: Paz,C.F.R.; Paganela,J.C.; dos Santos,C.A.; Nogueira,C.E.W.; Faleiros,R.R.
Verificaram-se características radiográficas do posicionamento da falange distal em relação ao estojo córneo em equinos da raça Crioula e correlacionaram-se tais achados com sinais de obesidade e concentrações plasmáticas de insulina. Consideraram-se dois grupos com base no escore da condição corporal (ECC). A média de idade entre os grupos foi de 9,2±5,8 anos em indivíduos normais (ECC 5-7) e de 10,3±3,7 anos em obesos (ECC 8-9). Diferenças estatísticas entre grupos ocorreram para valores de peso, perímetro torácico, escore da condição corporal, escore da crista do pescoço, comprimento do pescoço, circunferência do pescoço em três regiões referentes a 25%, 50% e 75% do comprimento do pescoço e entre o posicionamento da falange distal em relação ao estojo...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Equino; Raça Crioula; Obesidade; Insulina; Laminite.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600017

Qualidade nutricional e estabilidade oxidativa de manteigas produzidas do leite de vacas alimentadas com cana-de-açúcar suplementada com óleo de girassol
Provedor de dados: 45
Autores: Barros,P.A.V.; Glória,M.B.A.; Lopes,F.C.F.; Gama,M.A.S.; Souza,S.M.; Mourthé,M.H.F; Leão,M.I.
O objetivo deste estudo foi avaliar o perfil de ácidos graxos (AG), os índices de qualidade nutricional e a estabilidade oxidativa (EO) de manteigas produzidas do leite de vacas alimentadas com dietas à base de cana-de-açúcar contendo níveis crescentes de óleo de girassol (OG): 0 (controle); 1,5; 3,0 e 4,5% da matéria seca (MS). O perfil de AG das manteigas foi analisado por cromatografia gasosa, e a EO foi determinada utilizando-se o equipamento Rancimat®, modelo 743, operado a 120ºC e fluxo de ar de 20L/h. As concentrações dos AG rumênico (CLA cis-9, trans-11), vacênico (C18:1 trans-11) e oleico (C18:1 cis-9) na gordura das manteigas foram aumentadas em 867, 687 e 148%, respectivamente, à medida que se aumentou de 0 para 4,5% o nível de OG na dieta. Por...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ácido graxo; CLA; Produto lácteo; Rancidez oxidativa; Saúde humana.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500036

Aspectos clínicos, cirúrgicos e epidemiológicos da luxação de patela em cães atendidos no Hospital Veterinário, no período de janeiro de 2000 a julho de 2010: estudo retrospectivo
Provedor de dados: 45
Autores: Lara,J.S.; Oliveira,H.P.; Alves,E.G.L.; Silva,R.F.; Resende,C.M.F.
Avaliaram-se, por meio de estudo retrospectivo, o perfil epidemiológico, os sinais clínicos, as técnicas cirúrgicas utilizadas e a recuperação de cães apresentados para tratamento de luxação de patela no Hospital Veterinário da UFMG, no período de 2000 a 2010. Utilizaram-se as fichas clínico-cirúrgicas dos cães e registraram-se os dados referentes a cada animal. Foram estudadas 342 articulações nos registros de 210 animais. A luxação medial congênita bilateral foi a apresentação mais frequente, e as fêmeas foram mais acometidas. A idade dos animais variou de 32 dias a 16 anos, com maior ocorrência da luxação nos animais com até um ano de idade e massa corporal inferior a 9,1kg. Em 11,7% dos membros, a luxação era de grau I, em 39,8% grau II, em 20,5% grau...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Luxação; Patela; Cães; Epidemiologia; Ortopedia.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500002

Estudo normativo e avaliação da influência da idade no potencial evocado auditivo em cães sem raça definida
Provedor de dados: 45
Autores: Palumbo,M.I.P.; Resende,L.A.L.; Borges,A.S.
O objetivo deste trabalho foi realizar estudo normativo dos potenciais evocados auditivos obtidos de 34 cães sem raça definida e avaliar a influência da idade nos resultados obtidos. Os animais foram divididos em dois grupos de diferentes faixas etárias e o potencial evocado auditivo foi realizado com um estímulo de 85dB. O grupo 1 incluiu 16 cães com idades entre um e oito anos e o grupo 2, 18 animais com idades acima de oito anos. O comprimento e o diâmetro da cabeça foram mensurados e não houve diferença estatística entre os dois grupos. No grupo 1, as médias das latências das ondas I, III e V foram: 1,13; 2,64 e 3,45ms; e dos intervalos I-III, III-V e I-V foram 1,51; 0,81 e 2,32ms, respectivamente. No grupo 2, as médias das latências das ondas I, III e...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Potencial evocado auditivo; Idade; Cães.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300002

Viabilidade econômica da terceira ordenha em sistemas de produção de leite com ordenhadeira tipo circuito aberto
Provedor de dados: 45
Autores: Barbosa,G.L.; Lopes,M.A.; Nogueira,T.M.; Costa,G.M.; Albuquerque,F.T.
Objetivou-se analisar a viabilidade econômica da terceira ordenha em sistemas de produção de leite que utilizam ordenhadeira mecânica, do tipo circuito aberto, visando fornecer aos técnicos e pecuaristas informações que os auxiliem no processo de tomada de decisões. Especificamente pretendeu-se ainda: a) estimar o custo de uma ordenha; b) estimar, por meio de simulação, o custo da terceira ordenha; c) desenvolver uma equação matemática que permita estimar a quantidade mínima de leite produzido em duas ordenhas, a partir da qual será viável economicamente a realização da terceira ordenha. Os dados foram coletados em três sistemas de produção de leite, em uma rotina de duas ordenhas diárias, sendo realizadas três coletas de dados em cada um, perfazendo um...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bovinocultura leiteira; Custo de produção; Economia; Frequência de ordenhas.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400027

Accuracy of the estimates of ammonia concentration in rumen fluid using different analytical methods
Provedor de dados: 45
Autores: Souza,N.K.P.; Detmann,E.; Valadares Filho,S.C.; Costa,V.A.C.; Pina,D.S.; Gomes,D.I.; Queiroz,A.C.; Mantovani,H.C.
The accuracy of two different methods in measuring the ammonia nitrogen (N-NH3) concentration in rumen fluid were evaluated: a catalyzed indophenol colorimetric reaction (CICR) and the Kjeldahl distillation (KD). Five buffered standard solutions containing volatile fatty acids, true protein, and known ammonia concentrations (0, 3, 6, 12, and 24 N-NH3 mg/dL) were used to simulate rumen fluid. Different ratios (10:1, 7.5:1, 5:1, 2.5:1, 1:1, 1:2.5, 1:5, 1:7.5, and 1:10) of a potassium hydroxide solution (KOH, 2 mol/L) to standard solutions were evaluated by the KD method. The accuracy of each method was evaluated by adjusting a simple linear regression model of the estimated N-NH3 concentrations on the N-NH3 concentrations in the standard solutions. When the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ammonia nitrogen; Indophenol colorimetric reaction; Kjeldahl distillation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600024

Determination of diflubenzuron residues in milk and cattle tissues
Provedor de dados: 45
Autores: Tfouni,S.A.V.; Furlani,R.P.Z.; Carreiro,L.B.; Loredo,I.S.D.; Gomes,A.G.; Alves,L.A.; Mata,R.S.S.; Fonseca,A.M.D.; Rocha,R.M.S.
Diflubenzuron (DFB) is used to control ectoparasitic infestation by inhibiting larvae development in the manure and feces of treated animals. It is also currently been used to control tick infestations. In this study, milk and tissues from cattle treated orally with DFB for a 77-120 day period with a commercial product containing the compound were analyzed for the presence of residues. DFB residues were determined by using extraction with acetonitrile, cleanup with C18 SPE and chromatographic analysis by HPLC with UV detection (254nm). DFB was not detected in any of the analysed samples (&lt;0.006mg kg-1 for fat, &lt;0.014mg kg-1 for muscle, &lt;0.015mg kg-1 for kidney, &lt;0.016mg kg-1 for liver and &lt;0.0006mg kg-1 for milk). In this manner, the use of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diflubenzuron; Larvicide; Veterinary drug; Cattle tissue; Milk.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100043

Relação vitamina E: vitamina C sobre a qualidade da carne de frangos submetidos ao estresse pré-abate
Provedor de dados: 45
Autores: Fernandes,J.I.M.; Sakamoto,M.I.; Peiter,D.C.; Gottardo,E.T.; Tellini,C.
Determinou-se a melhor relação vitamina E:vitamina C em dietas para frangos de corte, visando ao melhor desempenho produtivo e à melhor qualidade da carne das aves submetidas ao estresse pré-abate. Utilizaram-se 800 pintos de corte, machos, distribuídos em delineamento inteiramente ao acaso, em esquema fatorial 2x4, com dois níveis de suplementação de vitamina E - 0 e 250mg/kg - e quatro de vitamina C - 0, 150, 300 e 450mg/kg. Aos 42 dias de idade, 12 horas ante mortem, amostras de aves de cada tratamento foram submetidas ao estresse por calor e, em seguida, pelo transporte. Foram avaliadas características de desempenho - peso vivo, consumo de ração e conversão alimentar - , bem como rendimento de carcaça e qualidade da carne de peito e coxas - perda de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Desempenho; Estresse calórico; Frangos de corte; Perda de água; Rendimento de carcaça.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100042

Desempenho produtivo de ovinos em confinamento alimentados com farelo de manga
Provedor de dados: 45
Autores: Pereira,L.G.R.; Aragão,A.L.S.; Santos,R.D.; Azevêdo,J.A.G.; Neves,A.L.A.; Ferreira,A.L.; Chizzotti,M.L.
Avaliou-se o efeito da inclusão do farelo de manga em substituição ao milho moído em dietas para ovinos sobre o consumo de nutrientes e de frações fibrosas, o ganho de peso e a conversão alimentar. Estudou-se também o benefício líquido e a taxa de retorno do custo total da dieta. Foram utilizados 24 cordeiros Santa Inês, distribuídos em delineamento inteiramente ao acaso, com quatro tratamentos, constituídos pelas porcentagens de inclusão do farelo de manga, em substituição ao milho, de 0, 33, 66 e 100%, e seis repetições. Não houve efeito da inclusão do farelo de manga sobre o consumo de nutrientes e o ganho de peso dos animais. Verificou-se efeito quadrático (P&lt;0,05) da porcentagem de inclusão do farelo de manga sobre a conversão alimentar. O farelo...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ovino; Consumo; Ganho de peso; Benefício líquido.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300009

TSST-1, enterotoxin and bacteriocin-like substance production by Staphylococcus aureus isolated from foods
Provedor de dados: 45
Autores: Carvalho,S.A.; Carmo,L.S.; Abreu,E.F.; Dias,R.S.; Apolônio,A.C.M.; Santos,S.G.; Farias,L.M.; Carvalho,M.A.R.
The production of Toxic Shock Syndrome Toxin-1 (TSST-1), enterotoxins and bacteriocin-like substances was evaluated in 95 strains of Staphylococcus aureus recovered from raw bovine milk (n=31) and from food samples involved in staphylococcal food poisoning (n=64). Enterotoxigenicity tests with the membrane over agar associated to optimal sensibility plate assays were performed and showed that 96.77% of strains recovered from milk and 95.31% from food samples produced enterotoxins A, B, C, D or TSST-1. Reference strains S. epidermidis, Bacillus cereus, Listeria monocytogenes, Lactobacillus casei, Pseudomonas aeruginosa, S. aureus, Salmonella Typhimurium, Escherichia coli, Enterococcus faecalis and Bacteroides fragilis were used as indicator bacteria in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cattle; Mastitis; Toxigenicity; Food poisoning; Bacteriocin.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500035

Antimicrobial activity of the Nisin Z producer Lactococcus lactis subsp. lactis Lc08 against Listeria monocytogenes in skim milk
Provedor de dados: 45
Autores: Perin,L.M.; Miranda,R.O.; Camargo,A.C.; Colombo,M.; Carvalho,A.F.; Nero,L.A.
The presented study aimed to verify the effect of different pH values, enzyme solutions and heat treatments on the antimicrobial activity of the bacteriocinogenic strain Lactococcus lactis subsp. lactis Lc08 and to test their antimicrobial activity against Listeria monocytogenes in reconstituted skim milk at refrigeration temperatures. This strain was previously described as a nisin Z producer and capable of inhibiting L. monocytogenes growth in in vitro tests. The antimicrobial activity of the bacteriocin cell-free supernatant of Lc08 was sensitive to enzyme treatments (except papain). The pH values and heating (65ºC for 30min, 75ºC for 15s) had no apparent effect on the antimicrobial activity of the bacteriocin produced by Lc08. Only treatment at...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nisin Z; Milk; Antagonistic activity; Lactococcus lactis subsp. lactis; Listeria monocytogenes.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500037

Substituição da agulha isolada para eletroneuroestimulação pela agulha metálica de cateter intravenoso, na verificação da punção epidural, em cães
Provedor de dados: 45
Autores: Tudury,E.A.; Fernandes,T.H.T.; Figueiredo,M.L.; Gomes,J.A.A.; Araújo,B.M.; Bonelli,M.A.; Silva,A.C.
Utilizou-se o eletroneuroestimulador como um meio adequado para confirmação do posicionamento da ponta de agulhas isoladas no espaço epidural lombossal, por meio de pequenas estimulações elétricas que provocam contrações dos músculos inervados, empregando-se agulha de cateter intravenoso em vez de agulha isolada para a eletroneuroestimulação. Foram utilizados 40 cães para procedimentos cirúrgicos ortopédicos, abdominais ou retroumbilicais que necessitassem de bloqueio epidural. Durante a introdução gradativa da agulha no canal vertebral lombossacral, estímulos elétricos de 1,5 a 0,5mA foram aplicados. Diante de contrações musculares em membros pélvicos, cauda e/ou ânus, as quais foram consideradas respostas condizentes com o correto posicionamento da...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cão; Anestesia; Estímulo elétrico; Extradural.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100019

Associação fitoterápica no tratamento de feridas cutâneas induzidas em equinos
Provedor de dados: 45
Autores: Ribeiro,G.; Silva,M.A.G.; Martins,C.B.; Borges,V.P.; Lacerda Neto,J.C.
Estudou-se a eficácia do uso tópico de um produto comercial constituído por uma associação fitoterápica como promotor da cicatrização de feridas induzidas em equinos. Uma lesão cutânea em forma de quadrado, com 5cm de lado, foi produzida cirurgicamente em ambos os lados da região glútea de oito cavalos adultos. Aleatoriamente um dos lados foi escolhido como tratado, permanecendo o contralateral como controle. As lesões do lado controle foram lavadas com água e detergente neutro e, no lado tratado, foi realizado o mesmo procedimento, seguido de aplicação tópica da associação fitoterápica. As evoluções macroscópica e microscópica do processo cicatricial foram avaliadas, e a área de cada ferida determinada no decorrer do período experimental. Foram...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cicatrização; Feridas; Equinos; Fitoterapia; Pele.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500022

Avaliação morfológica do abomaso e ceco-cólon de bovinos
Provedor de dados: 45
Autores: Cardoso,M.G.; Resende Júnior,J.C.; Lima,R.F.; Daniel,J.L.P.
A morfofisiologia relacionada à absorção de ácidos graxos voláteis (AGV) ao longo do trato gastrintestinal de ruminantes não é totalmente caracterizada. Desse modo, os objetivos deste trabalho foram mensurar a extensão da superfície de absorção e determinar o índice mitótico (IM) do abomaso, do ceco e da alça proximal do cólon ascendente (APCA). Dez bovinos mestiços adultos tiveram seu estômago e intestino grosso removidos imediatamente após o abate. A área total da superfície de absorção foi mensurada por meio de digitalização e análise de imagens. Cortes histológicos foram feitos para determinação do IM. A superfície absortiva do abomaso, 0,58m², foi menor (P&lt;0,01) do que a do rúmen, 6,53m², e a do omaso, 2,31m². A superfície absortiva do ceco e da...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ruminante; Câmara de fermentação distal; Estômago; Índice mitótico; Intestino grosso; Absorção.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200007

Ressecção de cisto e abscesso renais por laparoscopia em um cão
Provedor de dados: 45
Autores: Pinto Filho,S.T.L.; Brun,M.V.; Dalmolin,F.; Hartmann,H.; Pereira,D.T.; Pohl,V.H.; Coutinho Jr.,A.S.; Giglio,C.F.; Wiecheteck,F.S.; Oliveira,M.T.; Godoy,C.L.B.; Hora,A.M.
Cistos renais podem formar-se em qualquer parte do néfron e dos ductos coletores. Alguns são hereditários, originando-se durante a organogênese, e outros se desenvolvem no tecido renal normal, depois que os rins estão completamente formados. No presente relato, descreve-se a ressecção de cisto e abscesso renais, por cirurgia laparoscópica em um cão. Para o acesso, foram utilizados três portais, dois de 10mm de diâmetro e um de 5mm, dispostos na parede abdominal lateral direita e, num segundo momento, na parede abdominal lateral esquerda. Conclui-se, portanto, que a técnica laparoscópica com três portais permite a realização de ressecção de cisto e abscesso renais em cães, sem a ocorrência de recidivas em curto prazo.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cirurgia; Videolaparoscopia; Cão; Rim.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600010

Avaliação nutricional de fenos produzidos com Andropogon gayanus cv. Planaltina
Provedor de dados: 45
Autores: Moreira,G.R.; Saliba,E.O.S.; Gonçalves,L.C.; Maurício,R.M.; Sousa,L.F.; Rodriguez,N.M.; Lana,A.M.Q.
Neste estudo, foram utilizados fenos de Andropogon gayanus cv. Planaltina produzidos em diferentes idades de crescimento (56, 84, 112 e 140 dias) para ensaio de degradabilidade in vitro da matéria seca (DEIVMS), por meio da técnica in vitro semi-automática de produção de gases. Os dados de DEIVMS foram utilizados para confecção de equações que foram comparadas pelos testes de paralelismo e identidade de curvas. O teste de paralelismo não demonstrou diferença entre as equações e curvas, ou seja, as diferentes idades apresentaram o mesmo comportamento cinético de degradação. Contudo, pelo teste de identidade de curvas, observou-se que as equações e curvas dos fenos de A. gayanus colhidos com as plantas cortadas aos 56 e 84 dias são idênticas entre si, mas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cinética ruminal; Degradabilidade; Forragem conservada.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300036

Qualidade de ovos e resistência óssea de poedeiras alimentadas com minerais orgânicos
Provedor de dados: 45
Autores: Nunes,J.K.; Santos,V.L.; Rossi,P.; Anciuti,M.A.; Rutz,F.; Maier,J.C.; Silva,J.G.C.
Avaliou-se o efeito da utilização de níveis crescente de minerais orgânicos sobre a qualidade externa e interna de ovos e a resistência de ossos da tíbia de poedeiras semi-pesadas. Foram utilizadas 256 aves, com idade inicial de 30 semanas, distribuídas em 64 gaiolas perfazendo quatro aves por gaiola em delineamento inteiramente ao acaso. Os tratamentos consistiram da inclusão de minerais inorgânicos ou níveis crescentes de orgânicos na dieta basal das poedeiras, resultando em quatro tratamentos. Foram avaliados peso do ovo (g), gravidade específica, peso (g) e espessura (mm) da casca, altura do albúmen (mm), unidade Haugh, peso da gema (g) e do albúmen (g) e resistência óssea (kg). Houve diferença significativa (P&gt;0,05) entre as médias para peso do ovo...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Poedeira; Peso do albúmen; Peso do ovo.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200043

Clinical and pathological aspects of multicentric hemangiosarcoma in a Pinscher dog
Provedor de dados: 45
Autores: Martins,B.D.C.; Torres,B.B.J.; Rodriguez,A.A.M.; Gamba,C.O.; Cassali,G.D.; Lavalle,G.E.; Martins,G.D.C.; Melo,E.G.
A 3-year-old female Pinscher dog was presented with a history of lameness and pain in hind limbs for one week which acutely progressed to non-ambulatory paraparesis. The dog had been apathetic and anorexic during the six days prior to presentation. The neurological findings were compatible with upper motor neuron signs to the left hind limb due to a spinal cord compressive mass on the twelfth thoracic vertebral body. On the other hand, signs of lower motor neurons to the right hind limb were due to a mass with a pathological fracture in the right proximal femur, compressing the sciatic nerve. A histopathological analysis of all organs revealedthe proliferation of endothelial cells showingin filtrative growth and organization into vascular structures with a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dog; Neuropathy; Hemangiosarcoma; CD-31; Immunohistochemistry.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200003

Soropositividade para Mycoplasma hyopneumoniae em suínos abatidos em frigoríficos da região central do estado de São Paulo
Provedor de dados: 45
Autores: Vicente,A.F.; Catto,D.; Allendorf,S.D.; Garcia,K.C.O.D.; Antunes,J.M.A.P.; Appolinario,C.M.; Peres,M.G.; Megid,J.
Mycoplasma hyopneumoniae is the etiologic agent of enzootic pneumonia in pigs and causes large economic losses in the swine industry. There is little data on the positivity of this disease in Brazil. The objective of this study was to evaluate the seropositivity for this agent in 200 serum samples collected from pigs in a slaughterhouse located in the central region of São Paulo. A high percentage (52%) of positivity was found indicating the presence of the agent and the need to implement control measures.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: M. hyopneumoniae; Epidemiologia; Suínos.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600045

Different fasting periods in tiletamine-zolezepam-anethetized cats: Glycemia, recovery, blood-gas and cardiorrespiratory parameters
Provedor de dados: 45
Autores: Gering,A.P.; Nunes,N.; Oliveira,M.C.C.; Horr,M.; Lopes,P.C.F.; Tormena,A.A.
The effects of different fasting periods on glycemia levels and on cardiorrespiratory parameters in tiletamine-zolazepam-anesthetized cats were evaluated. Twenty one animals were randomly assigned to three groups: 8 hours (G8), 12 hours (G12) or 18 hours (G18) of the preoperative fasting. The tiletamine-zolazepam (2 mg/kg) was administered intravenously. The heart rate (HR), respiratory rate (fR), rectal temperature (T R), glycemia (G), laboratorial glycemia (Glab), venous oxygen partial pressure (PvO2), venous carbon dioxide partial pressure (PvCO2), venous hemoglobin saturation (SvO2), pH, base deficit (BD), bicarbonate concentration (HCO3- ) and haematocrit were evaluated at 90 minutes after the last meal (T0), immediately before anesthesia (T1) and at...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cats; Dissociative anesthesia; Glycemia; Monitoring; Recovery.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600015

Histoplasmose pulmonar canina no estado de Pernambuco, Brasil: relato de caso
Provedor de dados: 45
Autores: Silva,T.I.B.; Silva,A.C.B.; Muñoz,M.E.Z.; Zubieta,L.M.V.; Zubieta,F.E.V.; Silva,M.J.G.
A histoplasmose é uma das principais doenças micóticas que acometem o trato respiratório inferior de pequenos animais, sendo ocasionada pelo Histoplasma capsulatum, fungo encontrado em solos ricos em compostos nitrogenados, derivados de matéria orgânica em decomposição. Descreve-se um caso de histoplasmose pulmonar em um canino da raça Boxer, domiciliado no estado de Pernambuco, Brasil, o qual apresentava uma síndrome respiratória com evolução clínica de aproximadamente seis meses. Na análise citopatológica do lavado broncoalveolar, foram visualizadas estruturas leveduriformes de aproximadamente dois micrômetros de diâmetro, características de H. capsulatum, sendo, então, indicada a terapia com itraconazol. O exame citopatológico do lavado broncoalveolar é...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fungo; Respiratório; Cão; Lavado broncoalveolar; Citopatologia.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600007

Isolamento e caracterização de células mesenquimais do tecido adiposo de cães
Provedor de dados: 45
Autores: Patricio,L.F.L.; Rebelatto,C.L.K.; Brofman,P.R.S.; Maciel,B.B.; Beltrame,O.C.; Brito,H.F.V.; Locatelli-Dittrich,R.
As células-tronco mesenquimais (CTMs) diferenciam-se em várias linhagens e têm potencial de utilização na medicina regenerativa. As CTMs podem ser isoladas de vários tecidos de animais adultos. O objetivo deste estudo foi o isolamento das CTMs do tecido adiposo de cães, seu cultivo e diferenciação. Foram coletadas amostras de tecido adiposo subcutâneo de cinco cães. As CTMs foram isoladas, obtendo-se 146.803 (±49.533) células/g, cultivadas e diferenciadas em osteoblastos, adipócitos e condrócitos. Avaliaram-se a cinética do crescimento, a morfologia e a viabilidade celular. A caracterização citoquímica comprovou a natureza mesenquimal das células isoladas. O cultivo foi iniciado com 20.000 células/mL, verificando-se crescimento rápido até 72 horas (220.000...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Morfologia celular; Diferenciação celular; Células-tronco; Panículo adiposo.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400002

Exigência de treonina digestível para codornas de corte no período de 15 a 35 dias de idade
Provedor de dados: 45
Autores: Ton,A.P.S.; Furlan,A.C.; Martins,E.N.; Batista,E.; Pasquetti,T. J.; Scherer,C.; Quadros,T.C.O.; Nonaka,M.P.
Estimou-se a exigência de treonina digestível (ThrD) para codornas de corte (Coturnix coturnix sp.) em fase de crescimento no período de 15 a 35 dias de idade. Foram utilizadas 1020 codornas com 15 dias de idade, não sexadas, distribuídas em um delineamento experimental inteiramente ao acaso, com seis porcentagens de adição de treonina digestível - 0,93; 1,00; 1,07; 1,14; 1,21 e 1,28% na dieta - , cinco repetições e 34 codornas por unidade experimental. Não houve efeito sobre o desempenho, o rendimento e a composição química da carcaça e sobre o balanço de nitrogênio com o aumento da porcentagem de treonina digestível na dieta. Houve aumento linear no consumo de treonina e no custo da ração por quilograma de peso vivo ganho com o aumento da porcentagem de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aminoácidos sintéticos; Balanço de nitrogênio; Codornas; Composição corporal; Desempenho; Rendimento de carcaça.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200029

Bilateral extraluminal ectopic ureters in a Maine Coon cat
Provedor de dados: 45
Autores: Crivellenti,L.Z.; Meirelles,A.E.W.B.; Rondelli,M.C.H.; Borin-Crivellenti,S.; Moraes,P.C.; Andrade,A.L.; Carvalho,M.B.
Ectopic ureters are rarely observed in cats. Therefore, for a better chance of success in the corrective surgical procedure and survival of the patient, diagnosis should be confirmed early. This report illustrates the occurrence of bilateral ectopic ureters in a seven month old Maine Coon cat and describes the medical and surgical management adopted for correction of the abnormality.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feline; Excretory urography; Ureteroneocystostomy; Surgery complication.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300001

Avaliação de parâmetros cardiovasculares, ventilatórios e hemogasométricos de coelhos anestesiados com isofluorano ou sevofluorano e submetidos à ventilação espontânea ou controlada a volume
Provedor de dados: 45
Autores: Carneiro,R.L.; Nunes,N.; Lopes,P.C.F.; Moro,J.V.; Uscategui,R.R.; Belmonte,E.A.; Barbosa,V.F.; Gering,A.P.; Moraes,V.J.; Martins Filho,E.F.; Gomes Júnior,D.C.; Costa Neto,J.M.
Avaliaram-se as ventilações mecânica controlada a volume e espontânea, por meio das variáveis hemogasométricas, cardiovasculares e ventilométricas. Distribuíram-se 28 coelhos nos grupos: GIVC (isofluorano e ventilação controlada a volume), GIVE (isofluorano e ventilação espontânea), GSVC (sevofluorano e ventilação controlada a volume) e GSVE (sevofluorano e ventilação espontânea). Induziu-se por máscara, com isofluorano (GIVE e GIVC) ou sevofluorano (GSVE e GSVC) a 1,5 CAM, em oxigênio a 100%. Para manutenção anestésica, reajustou-se para 1 CAM. No GIVC e no GSVC, administrou-se rocurônio, na dose de 0,6mg/kg, seguida de infusão contínua na mesma dose de 0,6mg/kg/h. No GIVE e no GSVE, foi administrado NaCl 0,9% em vez de rocurônio. Iniciou-se a ventilação...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coelho; Anestesia inalatória; Lagomorfos; Respiração mecânica.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400009

Genotype effect on carcass and meat quality of lambs finished in irrigated pastures in the semiarid Northeastern Brazil
Provedor de dados: 45
Autores: Fernandes Júnior,G.A.; Lôbo,R.N.B.; Madruga,M.S.; Lôbo,A.M.B.O.; Vieira,L.S.; Facó,O.
The aim of this study was to compare four genetic groups of sheep on the carcass and meat quality traits. Thirty-three contemporary and unrelated male lambs, all of single birth were used in the experiment, being thirteen from the Santa Inês (SI) breed, seven from the Brazilian Somali breed (BS), six from the Morada Nova (MN) breed and seven from the ½ Dorper - ½ Morada Nova (F1) crossbreed. The genotypes SI, BS and F1 presented similar performances in relation to hot and cold carcass weights, which values were 10.76±0.53kg and 10.46±0.52kg for SI, 9.20±0.73kg and 8.99±0.71kg for BS, and 9.35±0.73kg and 9.13±0.71kg for F1, respectively. The BS had a better hot carcass yield (47.10±0.88%) and cold carcass yield (46.00±0.87%). Better carcass conformation was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carcass yields; Commercial cuts; Shear force.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400037

Levantamento de animais silvestres atropelados em trecho da rodovia BR482
Provedor de dados: 45
Autores: Sássi,C.M.; Nascimento,A.A.T.; Miranda,R.F.P.; Carvalho,G.D.
The objective of this study was to evaluate the occurrence of wild animals found run over on the highway BR482 in the stretch between the cities Conselheiro Lafaiete and Viçosa, Minas Gerais, Brazil. The average of run over was 0.010 animals/km traveled. The mammals represented the most hit, followed by birds, amphibians and reptiles. This work, pioneered in this region, presents the species most affected by the traffic in the highway BR482 and contributes to a preliminary assessment of the present fauna of this region and the anthropological impact along that stretch.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atropelamento; BR482; Ecologia de estradas.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600041

Rolling technique for treatment of left displacement of the large colon in horses: 11 cases (2004-2009)
Provedor de dados: 45
Autores: Canola,P.A.; Lacerda Neto,J.C.; Canola,J.C.
The left displacement of the large colon, a condition that commonly occurs in horses, has two clinical manifestations. Different treatments including medical treatment, rolling the horse under general anesthesia or surgical correction have been recommended. The diagnosis can often be made by rectal examination and confirmed by percutaneous ultrasonography. During the period between 2004 and 2009, 11 horses were treated for left displacement of the large colon by rolling the horses under general anesthesia, using a slightly different technique than the ones previously described. The clinical case selection was based on rectal palpation confirmed with ultrasonogram. Nine animals were successfully treated and two had to be submitted to surgery after three...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rolling; Ultrasonography; Equine; Colic; Acute abdomen.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200004

Cardiovascular and respiratory alterations in dogs during cervical myelography using ioversol
Provedor de dados: 45
Autores: Silva,S.R.A. Melo e; Tudury,E.A.; Albuquerque,V.B.; Araújo,F.P.; Souza,T.F.B.; Nóbrega Neto,P. I.; Bonelli,M.A.
Subarachnoid infusion of most contrast mediums and the steps involved in performing a cervical myelography have adverse affects that can discourage its use in the radiographic diagnosis of spinal cord diseases. Thus, the cardiovascular and respiratory alterations associated with neck flexion, subarachnoid puncture, and cerebrospinal fluid drainage during subarachnoid infusion of ioversol (320mgI/mL) in dogs under general anesthesia using isoflurane were evaluated. The dogs received subarachnoid infusion of autologous cerebrospinal fluid kept at 38°C - control group (GC); ioversol 0.3mL/kg at 25°C (GI25) and ioversol 0.3mL/kg heated to 38°C (GI38). Each dog had its heart rate (HR), systolic arterial pressure (SAP), diastolic arterial pressure (DAP),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dog; Myelography; Optiray 320; Cardiac arrhythmia; Arterial pressure.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400013

Cimento de aluminato de cálcio: uso em defeitos ósseos induzidos em fêmur de coelhos
Provedor de dados: 45
Autores: Burger,C.P.; Moraes,P.C.; Maniscalco,C.L.; Borges,P.A.; Batista,P.A.C.S.; Canola,J.C.; Meirelles,A.E.W.B.; Sabino,M.G.; Rossetto,H.
Avaliou-se o comportamento do cimento de aluminato de cálcio em defeitos ósseos induzidos experimentalmente em fêmur de 12 coelhos Nova Zelândia Branco, distribuídos em três grupos experimentais, correspondentes aos tempos de observação pós-operatória de 15 (G15), 30 (G30) e 60 (G60) dias. Realizaram-se avaliações clínico-cirúrgicas, radiográficas e histológicas, a fim de se observar o potencial osteoindutor e osteocondutor do biomaterial no defeito ósseo, e se houve osteointegração. O cimento de aluminato de cálcio, na formulação utilizada, mostrou-se biocompatível, porém não atuou como osteocondutor ou osteoindutor.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coelho; Biomaterial; Consolidação óssea.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300022

Tomografia computadorizada do encéfalo do cão: aspectos da normalidade e correlação anatômica
Provedor de dados: 45
Autores: Lorigados,C.A.B.; Pinto,A.C.B.F.
Obtiveram-se imagens tomográficas sem alterações da cabeça de cães, visando à familiarização com os aspectos normais do encéfalo e correlacionaram-se os achados com a respectiva anatomia da região estudada. Várias estruturas anatômicas foram identificadas, tais como o parênquima dos lobos frontal, parietal, temporal e occipital, a fissura longitudinal, o sistema ventricular, o cerebelo, o bulbo olfatório, o corpo caloso, o diencéfalo, a ponte, a medula oblonga e o sulco quiasmático, de forma direta ou relacionando-as com estruturas vizinhas que auxiliaram na sua identificação.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cães; Encéfalo; Anatomia; Tomografia computadorizada.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300018

Economic impact of Rhipicephalus (Boophilus) microplus: estimate of decreased milk production on a dairy farm
Provedor de dados: 45
Autores: Rodrigues,D.S.; Leite,R.C.
A redução da produção de leite em bovinos é um dos aspectos majoritários na composição total do valor de impacto econômico provocado por R. (B.) microplus. Portanto, o objetivo deste estudo foi estimar a perda decorrente da carga parasitária, observada em uma propriedade produtora de leite na região central de Minas Gerais. Para tal, foram consideradas 30 contagens de carrapatos, distribuídas de maneira uniforme durante o período de um ano, em um rebanho bovino com 74 vacas de composição racial 3/4 Holandês x Zebu, mantidas sob sistema de produção intensivo em pastoreio. A partir dos dados observados, foi possível estimar que 937.968 teleóginas completaram o repasto sanguíneo e foram responsáveis pela redução de 6.678 litros de leite durante o período...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rhipicephalus (Boophilus) microplus; Losses; Dairy cattle; Minas Gerais.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500039

Choroid plexus papilloma in a Rottweiler: computed tomographic, gross morfological and histological features
Provedor de dados: 45
Autores: Pinto,A.C.B.C. Fonseca; Villamizar,L.A.; Ghirelli,C.O.; Silva,T.R.C.; Baroni,C.O.; Banon,G.P.R.; Guerra,J.M.; Amaral,C.T.; Torres,L.N.
Among the tumors affecting the choroid plexus in dogs, the papilloma ranks second place in incidence after cell carcinoma tumors. Presumptive diagnosis can be made through imaging methods, such as computed tomography and magnetic resonance images. Definitive diagnosis of plexus choroid tumor is based on histopathological findings. This report presented the tomographic features of the brain in a 6-year-old intact female Rottweiler with choroid plexus papilloma. The computed tomography showed right lateral ventricle enlargement, midline deviation and an enhanced mass into the postcontrast phase. At necropsy, a mass on the floor of the right lateral ventricle was observed, associated with important ventricle dilatation. The histopathological analysis...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dog; Computed tomography; Choroid plexus; Tumor.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300023

Ensino de bem-estar e dor animal em cursos de medicina veterinária no Brasil
Provedor de dados: 45
Autores: Borges,T.D.; Sans,E.C.O.; Braga,J.S.; Machado,M.F.; Molento,C.F.M.
Currículos de medicina veterinária devem disponibilizar ferramentas para que os futuros profissionais atendam a demanda da sociedade, que inclui preocupações diretas com os animais. O objetivo deste trabalho foi traçar um perfil do panorama geral do ensino da medicina veterinária em relação a questões de bem-estar e dor animal. O método utilizado foi análise de documentos disponíveis online e coleta de dados via aplicação de questionários para coordenadores de curso de medicina veterinária. A descrição do curso, sua grade curricular e ementário foram estudados. Observou-se que 46% das 94 instituições estudadas apresentavam a disciplina de bem-estar animal e 26% ofereciam a disciplina de etologia. Houve evidência de que há uma pronta relação com a esfera...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bem-estar animal; Currículo; Dor animal; Ensino; Medicina veterinária.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100005

Genes de enterotoxinas e perfil antimicrobiano de Escherichia coli isoladas de suínos hígidos no Distrito Federal
Provedor de dados: 45
Autores: Drummond,V.O.; Perecmanis,S.
Um total de 127 cepas de Escherichia coli foi isolado de suínos no Distrito Federal, testado para a presença de genes de enterotoxinas (STa, LT-I, LT-II, Stx1 e Stx2) e para resistência antimicrobiana. Das cepas isoladas, oito (6,3%) possuíam genes para enterotoxinas, sendo quatro (3,2%) positivas somente para LT-I, três (2,4%) somente para STa e uma (0,8%) positiva para STa e LT-I. Nenhuma das cepas isoladas apresentou genes para LT-II, Stx1 ou Stx2. Quanto ao perfil de resistência antimicrobiano, os antibióticos com maiores porcentagens de resistência foram lincomicina (100%), sulfonamidas (74,8%) e tetraciclina (70,1%), enquanto os maiores índices de sensibilidade foram observados na norfloxacina (82,7%), gentamicina (75,6%) e sulfametoxazol +...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Escherichia coli; Suíno; Enterotoxinas; Resistência antimicrobiana.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400010

Contribution of ocular B-mode and triplex Doppler in the evaluation of 10 Poodle dogs with cataracts
Provedor de dados: 45
Autores: Feliciano,M.A.R.; Abrahim,M.A.; Peixoto,R.V.R.; Yasunaga,K.L.; Vicente,W.R.R.; Galera,P.D.
The findings of b-mode and especially triplex Doppler ocular ultrasound in the evaluation of 10 Poodle dogs with cataracts, which bring a contribution not yet reported in veterinary medicine, were reported. Ten Poodle dogs of varied ages and presenting cataracts were used. All animals were evaluated for ophthalmic and ultrasound examination. The ultrasound examination allowed the evaluation of the sonographic anatomy of the eye and measurement of the axial thickness of the lens (ATL). Using the Doppler mode, the blood flow of the ophthalmic artery and its vascular indexes, systolic velocity (SV), resistive index (RI) and pulsatility index (PI) were measured. Values found for ATL were 5.89±1.05 for the right eye (OD) and 6.07±1.32 for the left eye (OS)....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dog; Ocular ultrasound; Triplex Doppler; Cataract.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200009

Radiografia intraoral e convencional da hemiarcada superior direita de gatos domésticos
Provedor de dados: 45
Autores: Nepomuceno,A.C.; Canola,J.C.; Leite,C.A.L.; Mesquita,L.R.; Silveira,T.; Silva,F.D.F.; Meirelles,A.E.W.B.
A proposta com este trabalho foi avaliar a hemiarcada superior direita de gatos domésticos por meio de técnicas radiográficas odontológicas do paralelismo, empregando-se filmes intraorais aos posicionadores de Han Shin. As imagens obtidas por essa metodologia foram correlacionadas com as técnicas radiográficas convencionais (extraorais), com o intuito de se estabelecerem vantagens ou desvantagens para detectar possíveis afecções dentais e periodontais. Foram utilizados 30 gatos, sem raça definida, 17 machos e 13 fêmeas, faixa etária entre um e três anos, confinados em gatis do Departamento de Zootecnia da Universidade Federal de Lavras/MG. Com os animais sob anestesia geral, foram realizadas radiografias da hemiarcada superior direita, incluindo três...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gato; Odontologia veterinária; Radiologia.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100026

Infecção sistêmica por Mycobacterium avium em cão: relato de caso
Provedor de dados: 45
Autores: Gonçalves,S.; Garcia,K.; Amaral,P. S.; D'Elia,K.A.; Magalhães,A.I.; Rocha,V.C.F.
Infecções sistêmicas causadas pelo complexo Mycobacterium avium em cães são consideradas raras. Em cães e gatos, a infecção resulta da ingestão de carne ou do contato com solo ou fômites contaminados. As manifestações clínicas de cães infectados por M. avium tendem a ser vagas ou ausentes, logo o diagnóstico in vivo torna-se difícil. A suspeita de infecção sistêmica por micobacteriose ocorreu, neste relato, após a identificação de bacilos álcool-ácido resistentes na amostra de medula óssea, os quais foram identificados como Mycobacterium avium pelo método molecular de reação em cadeia da polimerase com análise de restrição (PCR-PRA). Este animal apresentava uma aplasia de medula óssea em decorrência de Erhlichia canis, corroborando a maioria dos relatos na...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mycobacterium avium; Infecção; Cão.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400025

Correlação entre a contagem automática de células somáticas e a porcentagem de neutrófilos pela citometria de fluxo e pela técnica de citocentrifugação
Provedor de dados: 45
Autores: Mira,C.S.; Della Libera,A.M.M.P.; Souza,F.N.; Blagitz,M.G.
O objetivo do presente estudo foi avaliar a correlação entre a contagem automática de células somáticas (CCS) com a porcentagem de neutrófilos pela técnica de citocentrifugação e pela citometria de fluxo. Para tal, 102 amostras de leite proveniente de 28 vacas da raça Holandesa foram coletadas e submetidas ao isolamento de células do leite e posterior identificação da população de neutrófilos. Após citocentrifugação, os neutrófilos foram identificados por microscopia óptica utilizando-se o corante de Rosenfeld. Os neutrófilos lácteos foram identificados por citometria de fluxo utilizando anticorpo monoclonal específico (CH138A) e anticorpo monoclonal secundário conjugado à ficoeritrina. O presente estudo demonstrou correlação positiva entre a CCS e a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bovinos leiteiros; Contagem celular diferencial; Glândula mamária; Leucócitos polimorfonucleares; Mastite.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500019

Influência da suplementação concentrada e da categoria animal no hemograma de ovinos da raça Morada Nova
Provedor de dados: 45
Autores: Bezerra,L.R.; Torreão,J.N.C.; Marques,C.A.T.; Machado,L.P.; Araújo,M.J.; Veiga,A.M.S.
Objetivou-se avaliar a influência do nível de suplementação com concentrado sobre o perfil hematológico de ovelhas Morada Nova no terço final da gestação e puerpério, bem como comparar os valores obtidos em diferentes categorias (fêmeas em gestação, puerpério e cordeiros). Utilizaram-se 11 ovelhas, aos 75 últimos dias de gestação e nos primeiros 75 dias de lactação, e oito cordeiros progênie das ovelhas, distribuídas em delineamento inteiramente casualizado em arranjo de parcelas subdivididas no tempo. Durante o período experimental, os animais permaneceram em pastagem de Andropogon gayanus, sendo recolhidos ao final da tarde, quando recebiam suplementação concentrada com 19,17% de proteína bruta. As amostras de sangue foram colhidas desde o 75º dia de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hemoglobina; Neutrófilos; Ovinos nativos; Suplementação.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600022

Effects of sex and genotype on performance and yield characteristics of free range broiler chickens
Provedor de dados: 45
Autores: Del Castilho,C.C.; Santos,T.T; Rodrigues,C.A.F.; Torres Filho,R.A.
The purpose of this work was to evaluate the effect of genotype and sex on the performance characteristics (weight gain, feed conversion and livability) and yields (carcass, breast and legs) of six free-range genotypes: Pesadão Vermelho (GEN1), Carijó (GEN2), Pescoço Pelado 1 (GEN3), Pescoço Pelado 2 (GEN4), Pescoço Pelado 3 (GEN5) and Pescoço Pelado 4 (GEN6). A total of 1584 sexed one day old chicks (792 males and 792 females) were housed in 48 pens, 33 birds per pen. The experimental design was a completely randomized factorial 2 x 6 (six genotypes and two sexes) design, with four replicates each. Diets were based on corn and soybean meal (no animal protein) provided in a feeding program in four phases: pre-starter (1 to 21 days), starter (22 to 42...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternative aviculture; Genotype; Performance; Yields.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500029

Morphometry and histomorphometry of the testis in crossbred pigs fed diets with different protein levels
Provedor de dados: 45
Autores: Valença,R.M.B.; Silva Junior,V.A.; Araújo,L.P.C.; Reis,J.C.; Guerra,M.M.P.; Soares,P.C.; Costa,A.N.
Aiming to evaluate the effect of the diet protein content on testicular parameters in pigs, 21 non-gelded male Dalland pigs were used and randomly divided into three groups. Males belonging to groups G2 and G3 received a diet with crude protein levels of 15% below and above, respectively, in relation to G1 (control). At 210 days of age, animals were castrated, and testis and epididymis were collected for morphometric and histomorphometry analyses. No difference was observed in relation to the total length of seminiferous tubules (G1=3239.9±333,3m; G2=2989.4±171,7m and G3=3059.5±254.9m), population of Sertoli cell (G1=4.7±0.5x10(9); G2=4.3±0.3x10(9) and G3=4.7±0.5x10(9)), population (G1=31.6±5.58x10(9); G2=27.3±4.0x10(9) and G3=26.4±3.9x10(9)) and volume of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pigs; Sperm production; Sertoli cells; Protein; Testosterone.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500010

Bubaline mastitis etiology in Northeast of Brazil
Provedor de dados: 45
Autores: Medeiros,E.S.; Freitas,M.F.L.; Pinheiro Júnior,J.W.; Saukas,T.N.; Krewer,C.C.; Santos,A.S.; Costa,M.M.; Mota,R.A.
Este estudo teve como objetivo avaliar a frequência de mastite clínica e subclínica e descrever os micro-organismos envolvidos no processo inflamatório da glândula mamária nos rebanhos de búfalos leiteiros no Nordeste do Brasil. Foram analisadas 1.896 amostras de leite provenientes de 474 búfalos em quatro propriedades localizadas nos Estados de Alagoas, Bahia, Ceará e Pernambuco. Após o exame físico da glândula mamária, as amostras de leite de cada teto foram submetidas aos testes da caneca do fundo preto e CMT (California Mastitis Test). As amostras que apresentaram scores ++ e +++ no CMT e as positivas para a caneca do fundo preto foram submetidas ao exame microbiológico. Do total de amostras estudadas, 90/1.896 (4,74%) apresentaram mastite clínica. Com...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Milk; Mammary gland; Buffaloes; Microorganisms.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600043

Efeitos do espaço de alojamento e da idade sobre desenvolvimento, integridade e proteção da mucosa intestinal de frangos de corte
Provedor de dados: 45
Autores: Thimotheo,M.; Alves,M.F.R.; Abe,F.R.; Boleli,I.C.
Foi avaliado se o espaço de alojamento influencia o desenvolvimento da mucosa do intestino delgado de frangos, sendo usado um esquema fatorial 4 x 2 (14, 28, 42, 55 dias de idade e alojamento pequeno: 0,11m²/ave e grande: 0,525m²/ave). Foram analisadas: altura, perímetro e número dos vilos, profundidade das criptas, número de células caliciformes e número de vilos sem e com perda de epitélio e exposição do conjuntivo. Em ambos os espaços de alojamento, o número de vilos diminuiu e a profundidade das criptas aumentou com a idade nas três regiões intestinais. A altura e o perímetro dos vilos aumentaram de 14 para 28 dias no jejuno e íleo, e o número de células caliciformes foi maior no duodeno e íleo a partir dos 42 dias. A perda de epitélio pelos vilos do...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Célula caliciforme; Espaço de alojamento; Frango de corte; Intestino; Perda de epitélio; Vilos.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100017

Orquiepididimite em carneiro por Salmonella enterica sub-diarizonae: primeiro caso na América do Sul
Provedor de dados: 45
Autores: Celeghini,E.C.C.; Gregory,L.; Pinheiro,E.S.; Piva,F.M.; Carneiro,P.A.B.; Parapinski-Santos,B.; Bianchi,M.; Benesi,F.J.
O objetivo deste artigo é relatar um caso de orquiepididimite associado com infecção por Salmonella enterica subespécie diarizonae em carneiro da raça Santa Inês de quatro anos de idade, vasectomizado. Ao exame clínico reprodutivo, o animal mostrou aumento severo do conteúdo escrotal, sendo o testículo direito maior do que o esquerdo e a cauda do epidídimo direita maior do que a esquerda. A consistência testicular, avaliada em escala de 1 a 5, foi 5 para o testículo direito e 2,5 para o esquerdo; o órgão apresentava-se muito sensível ao toque. Na ultrassonografia foram observadas estruturas anecoicas/hipoecoicas circulares na cauda do epidídimo, sugestivas de abscessos; alguns pontos hiperecogênicos no parênquima testicular, sugerindo lesões de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Epididimite; Orquite; Patologia; Infecção; Ovino.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100021

Estudo retrospectivo de ovariossalpingo-histerectomia em cadelas e gatas atendidas em Hospital Veterinário Escola no período de um ano
Provedor de dados: 45
Autores: Balthazar da Silveira,C.P.; Machado,E.A.A.; Silva,W.M.; Marinho,T.C.M.S.; Ferreira,A.R.A.; Bürger,C.P.; Costa Neto,J.M.
Realizou-se um estudo retrospectivo das indicações de ovariossalpingo-histerectomia - eletiva e terapêutica - no período de um ano. Foram analisados 193 prontuários de cadelas e gatas atendidas em Hospital Veterinário Escola, entre março de 2010 e março de 2011, levando em consideração a espécie, a idade e o uso ou não de anticoncepcional. Constatou-se que a demanda de OSH com caráter terapêutico (78,8%) é consideravelmente mais alta que a eletiva (21,2%). Observou-se que as anormalidades reprodutivas detectadas com maior frequência foram piometra (53,36%) e complicações obstétricas (25,38%) e que o uso de anticoncepcional foi o fator relevante para o delineamento desses quadros.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ovariossalpingo-histerectomia eletiva e terapêutica; Cadela; Gata.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200005

Laparoscopic paracostal herniorrhaphy in a dog: case report
Provedor de dados: 45
Autores: Trindade,A.B.; Basso,P.C.; Gonçalves,M.C.; Lima,G.A.; Gerardi,D.G.; Beck,C.A.C.; Contesini,E.A.; Brun,M.V.
Traumatic paracostal hernia is classified as an abdominal hernia that protrudes from the abdomen to a non physiologic space over the ribs. Treatment requires surgical reconstruction of the disrupted musculature in the thoracoabdominal region. Laparoscopic paracostal herniorrhaphy was performed in an eight-month-old male Teckel, presented after a car accident injury. A three-portal laparoscopic access was used for definitive diagnosis and hernia correction. After traction of the herniated omentum, a thoracoabdominal communication caused a left side pneumothorax, which was successfully drained with a chest tube placement. The herniorrhaphy was accomplished with intracorporeal sutures by a combination of Ford interlocking and cross mattress patterns. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abdominal hernia; Surgery; Videolaparoscopy.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600008

Determinação da dose inseminante e embriogênese na fertilização artificial de tambaqui (Colossoma macropomum)
Provedor de dados: 45
Autores: Leite,L.V.; Melo,M.A.P.; Oliveira,F.C.E.; Pinheiro,J.P.S.; Campello,C.C.; Nunes,J.F.; Salmito-Vanderley,C.S.B.
Determinou-se a dose inseminante para fertilização artificial e descreveu-se o desenvolvimento embrionário de tambaqui (Colossoma macropomum). Os gametas foram coletados de reprodutores induzidos hormonalmente. Foi realizada fertilização artificial nas proporções de espermatozoides/ovócito de D1-50.666; D2-75.999; D3-101.332; D4-126.665; D5-151.998. O desenvolvimento embrionário foi acompanhado por meio de observações periódicas em estereoscópio até a eclosão dos ovos. Na fase de fechamento do blastóporo foi calculada a taxa de fertilização nas diferentes doses inseminantes. A porcentagem de fertilização aumentou de forma linear segundo a equação Ŷ =0,050 + 0,00000773X (R²=97,5), atingindo um platô em 84% na proporção de 102.486 espermatozoides/ovócito. Os...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tambaqui; Embriologia; Espermatozoides/ovócito; Reprodução.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200018

Influência do tempo de transporte para juvenis de pacamã (Lophiosilurus alexandri)
Provedor de dados: 45
Autores: Luz,R.K.; Costa,L.S.; Ribeiro,P.A.P.; Silva,R.F.; Rosa,P.V.
The aim of this work was to evaluate different transport times for pacama juvenile (Lophiosilurus alexandri) previously trained to feed formulated diets. Four hundred and eighty-six pacama juveniles (2.52±0.71g) were submitted to 24 hours of fasting before transport. The animals were divided into nine plastic bags, with density of 54 juveniles in 5L of clean water for each bag after that inflated with pure oxygen and then sealed. Fish were transported for three hours and bags were open at 5, 6 and 7.5 hours after closing. For each time three replications were used. Survival was monitored for 96 hours post-transport. The longest time tested showed the lowest values of dissolved oxygen and pH, while the total ammonia was similar in the different treatments....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Peixe carnívoro; Lophiosilurus alexandri; Tempo de transporte; Alimentação.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600044

Species-specific nested PCR as a diagnostic tool for Brucella ovis infection in rams
Provedor de dados: 45
Autores: Costa,L.F.; Nozaki,C.N.; Lira,N.S.C.; Antunes,J.M.A.P.; Xavier,M.N.; Costa,E.A.; Paixão,T.A.; Santos,R.L.; Megid,J.
The aim of the present study was to evaluate a species-specific nested PCR based on a previously described species-specific PCR for detection of B. ovis in semen and urine samples of experimentally infected rams. The performance of the species-specific nested PCR was compared with the results of a genus-specific PCR. Fourteen rams were experimentally infected with the Brucella ovis REO 198 strain and samples of semen and urine were collected every week up to 180 days post infection. Out of 83 semen samples collected, 42 (50.6%) were positive for the species-specific nested PCR, and 23 (27.7%) were positive for the genus-specific PCR. Out of 75 urine samples, 49 (65.3%) were positive for the species-specific nested PCR, whereas 11 (14.6%) were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brucella ovis; Species-specific; Nested PCR; Semen; Urine.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100009

Aspectos reprodutivos e produtivos de vacas da raça Holandesa com puerpério normal ou patológico
Provedor de dados: 45
Autores: Martins,T.M.; Santos,R.L.; Paixão,T.A.; Costa,É.A.; Pires,A.C.; Borges,Á.M.
Foram avaliadas 103 vacas da raça Holandesa de primeira, segunda ou terceira ordens de lactação, com o objetivo de comparar aspectos reprodutivos e produtivos dos animais com puerpério normal ou patológico. Exames ginecológicos foram realizados semanalmente, do parto ao final do puerpério, por meio de palpação transretal, ultrassonografia e vaginoscopia. As incidências de partos gemelares, partos auxiliados, retenção de placenta e infecções uterinas até o primeiro serviço foram de 11,7%, 20,4%, 38,8% e 75%, respectivamente. A involução uterina e a primeira ovulação ocorreram aos 33,5±11,1 e 43,6±21,5 dias após o parto, respectivamente, com diferenças (P&lt;0,001) entre vacas com ou sem infecção uterina. O primeiro serviço ocorreu aos 75,9±31,0 dias após o...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bos taurus; Pós-parto; Involução uterina; Atividade ovariana; Infecção uterina.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500012

Rendimentos de cortes, proporção tecidual da carcaça e composição centesimal da carne de caprinos jovens em função do grupo racial e do peso corporal de abate
Provedor de dados: 45
Autores: Marques,R.O.; Menezes,J.J.L.; Gonçalves,H.C.; Medeiros,B.B.L.; Rodrigues,L.; Canizares,G.I.L.; Gomes,H.F.B.; Roça,R.O.
O objetivo do presente trabalho foi avaliar as proporções de cortes comerciais, tecidos do lombo e composição da carne de cabritos de cinco grupos raciais: Alpino, ½ Boer + ½ Alpino (½ BA), ½ Anglo Nubiano + ½ Alpino (½ ANA), ¾ Boer + ¼ Alpino (¾ BA), ¼ Boer + ¼ Alpino + ½ Anglo Nubiano (Tricross), submetidos a três pesos de abate (25, 30 e 35kg) em sistema de confinamento, com utilização de dieta completa. O cruzamento das raças Boer e Anglo Nubiana com fêmeas Alpinas apenas melhorou, nos cabritos, os rendimentos de cortes considerados de terceira categoria, como pescoço e costela. Pesos corporais de abate entre 30 e 35kg devem ser preferidos por aumentarem a proporção de lombo, reduzirem a proporção de pescoço nos Alpinos e aumentarem a de perna em...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cabrito; Cortes comerciais; Músculo; Osso.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500038

Desempenho e parâmetros sanguíneos de bezerros leiteiros que receberam sucedâneo lácteo ou silagem de colostro
Provedor de dados: 45
Autores: Ferreira,L.S.; Bittar,C.M.M.; Silva,J.T.; Soares,M.C.; Oltramari,C.E.; Nápoles,G.G.O.; Paula,M.R.
O objetivo deste estudo foi avaliar o desempenho e os parâmetros sanguíneos de bezerros que consumiram colostro bovino fermentado sob condições anaeróbias. Após o nascimento, 18 bezerros da raça Holandês foram alojados em abrigos individuais e passaram a receber 4L da dieta líquida, sucedâneo lácteo ou silagem de colostro, divididos em duas refeições. O consumo de concentrado inicial e o escore fecal foram registrados diariamente, enquanto a pesagem e as colheitas de amostras de sangue para a determinação das concentrações plasmáticas de glicose, nitrogênio ureico, ácidos graxos livres, β-hidroxibutirato e proteínas totais séricas foram realizadas semanalmente. Os animais alimentados com silagem de colostro apresentaram menores consumo de concentrado,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aleitamento; Colostro fermentado; Dieta líquida; Fermentação anaeróbica; Substituto de leite.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500013

Vacinação com Escherichia coli J5 no pré-parto e ocorrência de mastite e produção de leite de vacas mestiças leiteiras
Provedor de dados: 45
Autores: Maia,P.V.; Molina,L.R.; Facury Filho,E.J.; Gonçalves,R.L.; Moreira,L.P.V.; Carvalho,A.Ú.
Avaliaram-se a utilização da vacina Escherichia coli J5 no período pré-parto e a ocorrência de mastite e de produção de leite. Foram utilizadas 93 vacas, sendo 43 vacinadas e 50 não vacinadas. Para a análise dos dados de produção e CCS (contagem de células somáticas), utilizou-se delineamento inteiramente ao acaso em sistemas de parcelas subdivididas. Os dados de CCS e duração de casos clínicos de mastite foram transformados em Log10CCS. Para as médias de CCS e a duração de casos clínicos, usou-se o teste t. Para comparações de médias de recidivas de casos clínicos, usou-se o teste de Mann-Whitney. Para frequência de microrganismos e de mastite subclínica, usou-se o teste de qui-quadrado. A interação dessas variáveis foi analisada pelo teste de McNemar....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vaca leiteira; Vacina; E. coli J5; Mastite; Coliformes.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500014

Efeito da suplementação de cobre e selênio na dieta de novilhos Brangus sobre o desempenho e fermentação ruminal
Provedor de dados: 45
Autores: Del Claro,G.R.; Zanetti,M.A.; Saran Netto,A.; Vilela,F.G.; Melo,M.P.; Correa,L.B.; Freitas Jr.,J.E.
Vinte e oito bovinos Brangus foram usados para determinar o efeito da suplementação de cobre e selênio no desempenho e na fermentação ruminal. Os animais foram divididos em: 1) C(Controle) - sem a suplementação de cobre e selênio; 2) Se - 2mg Se/kg de matéria seca na forma de selenito de sódio; 3) Cu - 40mg Cu/kg de matéria seca na forma de sulfato de cobre; 4) Se/Cu - 2mg Se/kg de matéria seca na forma de selenito de sódio e 40mg Cu/kg de matéria seca na forma de sulfato de cobre. As pesagens dos animais foram feitas em intervalos de 28 dias, após jejum completo de 18 horas. Foram colhidas amostras de líquido ruminal para análises de ácidos graxos voláteis e pH. O ganho de peso diário aumentou com a suplementação de Se (P&lt;0,05). A ingestão de matéria...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ácidos graxos voláteis; Fontes; Minerais; Nutrição; Ruminantes.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100036

Efeito da adição de farinha de linhaça à dieta sobre a concentração de colesterol e ácidos graxos em camarões
Provedor de dados: 45
Autores: Santos,F.L.; Azeredo,V.B.; Andrade,C.T.; Marques,I.P.; Romeiro,G.A.; Araújo,K.G.L.
Avaliou-se a expressão de ácidos graxos, macronutrientes e colesterol de camarões-da-malásia alimentados com dieta adicionada de sementes de linhaça. Quinhentos camarões foram distribuídos em dois grupos e alimentados durante 90 dias com dietas contendo: 1) lipídeo proveniente de linhaça e 2) óleo de soja (controle). A concentração de proteína foi maior (Р&lt;0,05) para o grupo-linhaça, 15,8±0,09%, em relação ao grupo-controle, 15,2±0,04%. O peso corporal também se apresentou maior no grupo-linhaça, 1,38±0,93g, em relação ao grupo-controle, 0,93±0,48g. O grupo-linhaça apresentou teor de colesterol de 120,8±23,9mg/100g e o grupo-controle, 130,2±13,9mg/100g, porém sem diferença estatística significativa. Em relação ao perfil lipídico, a suplementação da...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Camarão; Macronutrientes; Linhaça; Colesterol; Ácidos graxos.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300041

Characterization of mesenchymal stem cells derived from equine adipose tissue
Provedor de dados: 45
Autores: Carvalho,A.M.; Yamada,A.L.M.; Golim,M.A.; Álvarez,L.E.C.; Jorge,L.L.; Conceição,M.L.; Deffune,E.; Hussni,C.A.; Alves,A.L.G.
Stem cell therapy has shown promising results in tendinitis and osteoarthritis in equine medicine. The purpose of this work was to characterize the adipose-derived mesenchymal stem cells (AdMSCs) in horses through (1) the assessment of the capacity of progenitor cells to perform adipogenic, osteogenic and chondrogenic differentiation; and (2) flow cytometry analysis using the stemness related markers: CD44, CD90, CD105 and MHC Class II. Five mixed-breed horses, aged 2-4 years-old were used to collect adipose tissue from the base of the tail. After isolation and culture of AdMSCs, immunophenotypic characterization was performed through flow cytometry. There was a high expression of CD44, CD90 and CD105, and no expression of MHC Class II markers. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Immunophenotypic characterization; Differentiation; Equine; Adipose tissue; Mesenchymal stem cell.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400001

Hematologia e bioquímica sérica de equinos de concurso completo de equitação em treinamento
Provedor de dados: 45
Autores: Santiago,J.M.; Almeida,F.Q.; Silva,L.L.F.; Miranda,A.C.T.; Azevedo,J.F.; Oliveira,C.A.A.; Carrilho,S.S.
Avaliaram-se a hematologia e a bioquímica sérica em equinos de concurso completo de equitação (CCE) em treinamento durante testes de esforço incremental em esteira ergométrica de alta velocidade. Foram utilizados 16 equinos em delineamento experimental inteiramente ao acaso com quatro tratamentos e quatro repetições em esquema de parcelas subdivididas, utilizando-se como fontes de variação nos tratamentos a idade e o histórico de treinamento em CCE. As parcelas foram constituídas pelos testes incrementais realizados nas fases inicial e final do treinamento. As subparcelas foram representadas pelos tempos de avaliação e coletas. Os equinos do grupo experimental novos iniciantes apresentaram valor médio do hematócrito de 43,24%, sendo inferior ao hematócrito...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Equino; Hemograma; Leucograma; Teste incremental.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200013

Hematologic changes in propofol-anesthetized dogs with or without tramadol administration
Provedor de dados: 45
Autores: Costa,P.F.; Nunes,N.; Belmonte,E.A.; Moro,J.V.; Lopes,P.C.F.
Drugs commonly used in anesthesia practice may significantly alter the oxidative state of blood cells. This mechanism could contribute to the immune suppression that occurs transiently in the early postoperative period. Thus, we assessed the effects of continuous rate infusion (CRI) of propofol associated or not with tramadol on hematologic parameters in dogs. Eight adult mongrel dogs were anesthetized on 2 occasions, 15 d apart. Two groups were formed: control group (CG) and tramadol group (GT). Propofol was used for induction (10mg kg-1) followed by a CRI (0.7mg kg-1minute-1). The animals were positioned in lateral recumbency and mechanically ventilated with inspired oxygen fraction of 0.6. In TG, tramadol (2mg kg-1) followed by a CRI (0.5mg...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Blood cells; Hematology; Opioid; Total intravenous anesthesia.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500007

Intoxicação crônica por cobre em ovinos: conduta para o diagnóstico conclusivo
Provedor de dados: 45
Autores: Miguel,M.P.; Souza,M.A.; Cunha,P.H.J.; Costa,G.L.; Abud,L.J.
Descreveram-se os sinais clínicos e achados anatomopatológicos da intoxicação crônica por cobre em um ovino da raça Texxel e definiu-se a conduta diagnóstica correta para confirmação da enfermidade. Um ovino foi encaminhado ao setor de patologia com histórico de apatia, hemoglobinúria e morte em dois a três dias. No exame necroscópico, observaram-se icterícia e edema subcutâneo, fígado aumentado de volume e amarelado e rins escuros. No exame histológico, observaram-se necrose zonal aleatória e acentuada no fígado, necrose epitelial tubular, gotas hialinas e cilindros marrom-alaranjados em túbulos coletores dos rins. O histórico alimentar, a sensibilidade de espécie/raça, o quadro clínico, as alterações macroscópicas e microscópicas sugeriram o quadro de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hemólise; Hemoglobinúria; Histoquímica; Métodos analíticos; Ovinos.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200010

Substituição parcial do milho por sorgo granífero na alimentação de matrizes suínas primíparas nos períodos de puberdade e gestação
Provedor de dados: 45
Autores: Moreira,F.R.C.; Costa,A.N.; Martins,T.D.D.; Silva,J.H.V.; Cruz,G.R.B.; Pascoal,L.A.F.
Avaliou-se o efeito da substituição parcial do milho por sorgo granífero na dieta de matrizes suínas híbridas durante a puberdade e a gestação. Foram utilizadas 25 leitoas, distribuídas em três tratamentos com porcentagens crescentes de sorgo granífero - 0%, 25% e 50% - em substituição ao milho. As fêmeas foram avaliadas durante as fases de pré-puberdade, puberdade e gestação, tendo sido mensurados o peso vivo (PV) e a idade à puberdade nas jovens e o PV e a espessura de toucinho (ET) nas fêmeas gestantes - à cobrição e aos 30, 60, 90 e 110 dias de prenhez. Na fase de pré-puberdade, o ganho de peso diário diminuiu com o aumento da utilização do sorgo, e durante a puberdade não houve efeito dos tratamentos. Houve efeito linear da substituição sobre o PV aos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alimento alternativo; Fêmeas suínas; Reprodução; Suíno.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300040

Utilização de contrairritante no tratamento da fixação dorsal de patela intermitente em equinos: relato de casos
Provedor de dados: 45
Autores: Watanabe,M.J.; Pyles,M.D.; Alonso,J.M.; França,D.Q.; Yamada,A. L.M.; Hussni,C.A.; Alves,A.L.G.
Em nove equinos atendidos por apresentarem fixação dorsal de patela intermitente, optou-se pela aplicação de 2mL de contrairritante na região subcutânea, ao longo dos ligamentos patelares medial e intermédio. No período de 12 a 48h após a aplicação, os animais apresentaram aumento de volume e de temperatura local, sensibilidade dolorosa à palpação e relutância à locomoção. Após esse período, os sinais clínicos de inflamação e fixação dorsal de patela foram gradativamente diminuindo até o sétimo dia, em sete dos nove animais avaliados. Após a remissão dos sinais de inflamação, dois animais não responderam ao tratamento, sendo necessária a repetição em um dos casos e realização de desmotomia patelar medial no outro. A aplicação de contrairritante foi eficaz...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fixação de patela; Ligamentos patelares; Tratamento conservativo; Contrairritante.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200002

Uso do plasma rico em plaquetas no reparo de úlceras de córnea profundas induzidas em coelhos. Avaliação clínica e histomorfométrica
Provedor de dados: 45
Autores: Donatti,C.; Brandão,C.V.S.; Ranzani,J.J.T.; Perches,C.S.; Padovani,C.R.; Pellizzon,C.H.; Sereno,M.G.
Avaliou-se e comparou-se, clinicamente, por meio de histopatologia e morfometria, o processo de reparação corneana de úlceras experimentais induzidas em coelhos, com o uso de plasma rico em plaquetas (PRP) sob a forma de colírio ou tampão. Foram utilizados 60 coelhos, constituindo-se quatro grupos experimentais de 15 animais cada, designados grupo plaqueta (GP), grupo tampão (GT), grupo controle (GC) e grupo controle amniótica (GA). Os grupos experimentais foram subdivididos em três subgrupos (M4, M7, M30), de acordo com o período final de avaliação, aos quatro, sete e 30 dias, respectivamente. Não houve diferenças entre os tratamentos utilizados quanto aos sinais relacionados à sensibilidade ocular, quemose e secreção ocular. Os grupos tratados com PRP,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coelho; Plaquetas; Córnea; Úlcera; Histomorfométrica.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300029

Physical characteristics of the eggs of red-legged partridge (Alectoris rufa) reared in captivity
Provedor de dados: 45
Autores: Ribeiro,S.; Pereira,A.F.; Capela e Silva,F.; Ferraz de Oliveira,M.I.
O objetivo do presente estudo foi avaliar os efeitos da idade das fêmeas (um, dois e três anos) e do mês de postura (março, abril e maio) sobre as características físicas dos ovos da perdiz vermelha (Alectoris rufa) criada em cativeiro. O peso (W), o comprimento máximo (L) e a largura máxima (B) de 2878 ovos foram determinados diretamente, enquanto o índice de forma (B/L), o volume (V) e a superfície (S) foram calculados com base nos parâmetros determinados diretamente. A análise mostrou diferenças significativas (P&lt;0,01) no peso dos ovos entre as diferentes idades e entre meses de postura, com menor peso nas fêmeas mais jovens. Observaram-se diferenças significativas (P&lt;0,01) no comprimento do ovo entre as classes de idade, mas não entre os meses de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Red-legged partridge; Alectoris rufa; Egg characteristics.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600046

Resposta à seleção de características de desempenho e morfométricas de tilápia-do-nilo ao longo do período de cultivo
Provedor de dados: 45
Autores: Yoshida,G.M.; Oliveira,C.A.L.; Kunita,N.M.; Oliveira,S.N.; Alexandre Filho,L.; Resende,E.K.; Lopera-Barrero,N.M.; Ribeiro,R.P.
Estudou-se a resposta à seleção para características de desempenho e morfométricas de tilápia-do-nilo (Oreochromis niloticus) em diferentes períodos de cultivo. Realizaram-se análises unicaracter para todas as características estudadas e as análises bicaracter, associando-se o ganho de peso diário, mensurado em quatro biometrias, com as características morfométricas obtidas ao final do período de cultivo. As herdabilidades estimadas para peso vivo, altura e comprimento de cabeça foram mais altas em análises unicaracter do que as estimadas em análises bicaracter. Os valores de correlações genéticas, fenotípicas, Pearson e Spearman foram positivas e crescentes com o avanço da idade dos animais. As respostas à seleção indireta foram 87% mais altas que as...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Peixe; Herdabilidade; Correlação genética; Ganho genético.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600032

Desempenho bioeconômico de sistemas intensivos de cria e de ciclo completo por meio de simulação
Provedor de dados: 45
Autores: Santana,R.A.V.; Barbosa,F.A.; Mandarino,R.A.; Lobo,C.F.
Foram simulados quatro sistemas de produção de bovinos de corte a partir de dados zootécnicos e econômicos de uma fazenda de ciclo completo situada no município de Corinto, região central de Minas Gerais. Utilizou-se o programa de simulação bioeconômica Embrapec. Os sistemas simulados foram: ciclo completo com uso de cruzamento industrial (CompCRUZA), ciclo completo exclusivamente com zebuíno (CompZEBU), ciclo de cria com uso de cruzamento industrial (CriaCRUZA), ciclo de cria exclusivamente com zebuíno (CriaZEBU). No sistema com cruzamento industrial, os animais eram vendidos logo após a desmama, com oito meses (CriaCRUZA), ou abatidos aos 13 meses (CompCRUZA). No sistema com rebanho zebu, os animais eram também vendidos à desmama (CriaZEBU) ou abatidos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cruzamento industrial; Gado de corte; Indicadores zootécnicos; Rentabilidade; Zebu.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600027

Efeito do enxerto ósseo corticoesponjoso na osteogênese em falha cortical ulnar de galinhas domésticas (Gallus domesticus)
Provedor de dados: 45
Autores: Balthazar,D.A.; Silva,M.F.A.; Castro,D.S.; Suzano,S.M.C.; Cruz,R.A.; Scherer,P.O.
O objetivo do estudo foi avaliar o efeito do enxerto ósseo corticoesponjoso na osteogênese em falha cortical ulnar de galinhas domésticas. Foram utilizadas 18 galinhas, com aproximadamente 70 semanas de idade e peso corpóreo médio de 2,5kg. Criou-se uma falha óssea na porção diafisária média da ulna em ambas as asas, sendo a direita utilizada como grupo-controle (grupo I) e a esquerda como grupo-tratado (grupo II). As aves foram subdivididas aleatoriamente em quatro subgrupos de acordo com o período de observação (14, 35, 60 e 90 dias). No grupo II, dois fragmentos ósseos da carena do esterno foram retirados, seccionados e implantados na falha óssea. Ao término do período de observação de cada subgrupo, as aves foram abatidas com tiopental sódico para...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Galinha; Falha óssea; Enxerto; Osteogênese.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100018

Qualidade do corpo lúteo e do embrião de ovelhas Santa Inês superovuladas com FSH associado à rbST
Provedor de dados: 45
Autores: Rocha do Nascimento,I.M.; Sousa Júnior,A.; Castelo Branco,M.A.; Carvalho,Y.N.T.; Mota,L.H.C.M.; Ferreira,S.B.; Souza,I.O.T; Moraes Júnior,F.J.; Leal,T.M.; Souza,J.A.T.
Avaliou-se o efeito da somatotropina bovina recombinante (rbST) sobre a qualidade do corpo lúteo e do embrião e sobre a concentração de progesterona (P4), em ovelhas da raça Santa Inês doadoras de embriões. Foram utilizadas 13 doadoras, distribuídas aleatoriamente em dois grupos, G1 (n=7) e G2 (n=6). Em ambos os grupos, as doadoras foram sincronizadas com implante vaginal por 14 dias, receberam 100µg de PGF2α (Ciosin®) no sétimo dia e foram superovuladas, a partir do 12º dia, com 250UI de FSH (Folltopin-V®) em seis doses decrescentes. No dia da retirada do implante, as doadoras do G2 receberam 125mg de rbST (Boostin®) e foram cobertas por macho Santa Inês a cada 12 horas até o final do estro. No sexto dia após a primeira cobrição, foram avaliadas, por...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ovelha; Embrião; GH.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500015

Padronização da técnica de plasmaférese automatizada em equinos
Provedor de dados: 45
Autores: Escodro,P.B.; Bernardo,J.O.; Roveri,E.G.; Escodro,L.O.; Oliveira,C.F.; Fonseca,L.S.; Lopes,C.R.A.; Tonholo,J.; Nascimento,T. Gomes do.
O presente artigo objetivou estudar a viabilidade da técnica de plasmaférese automatizada e padronizá-la em cinco equinos hígidos, bem como apresentar as complicações durante o procedimento, as adequações em relação aos procedimentos em humanos e avaliar a recuperação de volume globular e proteínas plasmáticas totais nos doadores. Os procedimentos foram realizados com o equipamento Fresenius AS104, com duração média de 1h46min, processamento de 5758mL de sangue total e colheita média de 3133mL de plasma. Não foram observadas alterações significativas do volume globular após a plasmaférese automatizada. A recuperação dos níveis plasmáticos de proteínas foi de 91,4% em 96 horas após o procedimento. A plasmaférese automatizada apresentou-se viável para a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Equino; Plasmaférese; Níveis hematimétricos.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400016

Correction of rectal sacculation through lateral resection in dogs with perineal hernia - technique description
Provedor de dados: 45
Autores: Moraes,P.C.; Zanetti,N.M.; Burger,C.P.; Meirelles,A.E.W.B.; Canola,J.C.; Isola,J.G.M.P.
The occurrence of perineal hernias in dogs during routine clinical surgery is frequent. The coexistence of rectal diseases that go undiagnosed or are not correctly treated can cause recurrence and postoperative complications. The objective of this report is to describe a surgical technique for treatment of rectal sacculation through lateral resection in dogs with perineal hernia, whereby restoring the rectal integrity.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dog; Perineal hernia; Rectal disease.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300006

The action of demineralized bovine bone matrix on bone neoformation in rats submitted to experimental alcoholism
Provedor de dados: 45
Autores: Buchaim,R.L.; Andreo,J.C.; Rodrigues,A. C.; Buchaim,D.V.; Dias,D.V.; Daré,L.R.; Roque,D.D.; Roque,J.S.
The objective of this study was to evaluate whether demineralized bovine bone (Gen-ox®) alters bone neoformation in rats submitted to alcoholism. Forty male rats were separated into two groups of 20 rats and distributed as follows: Group E1, which received 25% ethanol and a surgical cavity filled only by a blood clot, and Group E2, which received 25% ethanol and a surgical cavity filled with Gen-ox®. The animals were euthanized at 10, 20, 40 and 60 days after surgery and necropsy was performed. The histomorphological and histometric analyses of the area of connective tissue and bone neoformation showed that the reorganization of the bone marrow and full repair of the surgical cavity in Group E1 occurred more quickly than in Group E2. It was also noted that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rat; Bone regeneration; Alcoholism.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300016

Estresse oxidativo e aumento da apoptose em neutrófilos de cães com azotemia pré-renal
Provedor de dados: 45
Autores: Silva,A.C.R.A.; Almeida,B.F.M; Soeiro,C.S.; Ferreira,W.L.; Lima,V.M.F.; Ciarlini,P.C.
O presente trabalho tem como objetivo testar a hipótese de que, à semelhança do que ocorre na uremia, cães com azotemia pré-renal sofrem estresse oxidativo, o qual está relacionado com alterações do metabolismo oxidativo e apoptose dos neutrófilos. Para tal, foi determinada a peroxidação lipídica pela quantificação do malondialdeído (MDA) e o status antioxidante total do plasma de 15 cães normais e 10 com azotemia pré-renal, correlacionando-os com a produção de superóxido e o índice apoptótico dos neutrófilos. As determinações do MDA e do status antioxidante total foram estabelecidas empregando-se um conjunto de reagentes comerciais. Por meio de citometria de fluxo capilar, a produção de superóxido e a apoptose de neutrófilos isolados de sangue periférico...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Metabolismo oxidativo; Peroxidação lipídica; Capacidade antioxidante; Imunossupressão.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100025

Criptorquidismo em jaguatirica de vida livre capturada no Parque Estadual do Rio Doce, Brasil
Provedor de dados: 45
Autores: Araujo,G.R.; Paula,T.A.R.; Deco-Souza,T.; Garay,R.M.; Bergo,L.C.F.; Silva,L.C.; Csermak Júnior,A.C.; Ferrer,J.B.S.; Barros,J.B.G.
O presente trabalho consiste no primeiro relato de criptorquidismo em uma jaguatirica, adulta, de vida livre. Para a captura foram empregadas armadilhas com desarme de guilhotina, usando como isca vísceras de bovino. O animal foi contido quimicamente por meio de dardos anestésicos e mantido sob anestesia, utilizando a associação de cloridrato de quetamina e cloridrato de xilazina. Durante o exame andrológico, observou-se que o testículo esquerdo localizava-se subcutâneo, próximo à região inguinal, caracterizando-se criptorquidismo unilateral. Esse testículo apresentava-se flácido, com volume de 2,57mL, enquanto o testículo contralateral apresentava consistência firme e volume de 11,50mL. A área ocupada pelas espículas penianas mostrou-se compatível com a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Leopardus pardalis; Criptorquidismo; Fragmentação florestal; Endogamia.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100001

Degradabilidade in situ do bagaço de cana-de-açúcar para pequenos ruminantes de raças naturalizadas do Nordeste brasileiro
Provedor de dados: 45
Autores: Gomes,G.M.F.; Vasconcelos,A.M.; Egito,A.S.; Lima,A.R.; Carneiro,J.C.; Landim,A.V.; Fonteles,N.L.O.; Salles,H.O.
Com o crescimento da indústria sucroalcooleira, buscam-se alternativas de uso dos resíduos gerados por ela. Os pequenos ruminantes de raças naturalizadas do Nordeste brasileiro mostram-se como grupos potenciais para que seja utilizado o bagaço de cana-de-açúcar (BCA) nas dietas. Nesse contexto, objetivou-se determinar a degradabilidade ruminal in situ da matéria seca (MS) e da fibra em detergente neutro (FDN) do BCA e os parâmetros ruminais em caprinos Moxotó e ovinos Morada Nova, fistulados no rúmen. Contidos em sacos de náilon, 3g de BCA foram incubados no rúmen nos tempos seis, 24 e 96 horas, determinando-se o conteúdo de MS e FDN nos resíduos obtidos. Nos tempos zero, seis e 12 horas após a primeira refeição, mediram-se no líquido ruminal pH e...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fibra; Resíduo; Rúmen; Caprinos; Ovinos.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600029

Efeitos do horário de postura de matrizes pesadas sobre o rendimento de incubação
Provedor de dados: 45
Autores: Barbosa,V.M.; Rocha,J.S.R.; Pompeu,M.A.; Fernandes,M.N.S.; Machado,A.C.; Cunha,C.E.; Cardeal,P.C.; Ruiz,L.E.A.; Lara,L.J.C.; Baião,N.C.
The effects of oviposition time, which represents different positions of the follicles in a sequence of posture, were studied on egg weight, chick weight, egg weight loss during incubation, hatchability, embryo mortality and infertility . A total of 19, 820 eggs, layed on the same day, from Cobb® broiler breeders aging 46-week-old were used. The eggs were classified according to the oviposition time posture (corresponding to the time of collection) from 8:30 am, 10:30 am, 12:30 pm, 14:30 pm and 16:30 pm, which represented the folowing treatments: 1st, 2nd, 3rd, 4th and 5th collects, respectively. The experimental design was completely randomized with five treatments and 36 repetitions, and each tray of 96 eggs was considered a repetition. The normal and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler breeders; Embryo development; Incubation; Time of laying.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400045

Maturação in vitro de oócitos bovinos em meios suplementados com quercetina e seu efeito sobre o desenvolvimento embrionário
Provedor de dados: 45
Autores: Guemra,S.; Monzani,P.S.; Santos,E.S.; Zanin,R.; Ohashi,O.M.; Miranda,M.S.; Adona,P.R.
A quercetina é um flavonoide, amplamente encontrada em frutas, vegetais, grãos, flores, com elevada concentração no vinho tinto, e tem sido caracterizada funcionalmente pela atividade antioxidante. Para avaliação da maturação nuclear e do desenvolvimento embrionário bovino, os oócitos foram maturados por 22h na presença de quercetina (0,4, 2, 10 e 50µM), cisteamina (100µM) e na ausência dos antioxidantes. Os oócitos maturados foram corados com Hoechst para avaliação da maturação in vitro. Para avaliação do desenvolvimento embrionário, os oócitos foram fertilizados e cultivados in vitro, as taxas de desenvolvimento embrionário foram determinadas no sétimo dia de cultivo e o percentual de eclosão e o número de células dos embriões no oitavo dia. Os níveis de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidante; Bovino; Embrião; Quercetina e oócito.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600005

Alimentação de vacas F1 Holandês x Zebu com suplementos nitrogenados e monensina sódica: avaliação do consumo, parâmetros ruminais e produção de leite
Provedor de dados: 45
Autores: Laguna,J.G.; Rodrigues,A.N.; Saturnino,H.M.; Ruas,J.R.M.; Coelho,S.G.; Reis,R.B.
Avaliaram-se suplementos nitrogenados contendo ou não monensina sódica, adicionados à silagem, sobre o consumo de matéria seca (CMS), a digestibilidade da MS (DMS) e a produção de vacas F1 Holandês x Zebu. Vacas (n=15) com 21 dias em lactação, produzindo 19,2kg/dia, foram distribuídas em um delineamento quadrado latino 5X5, com três vacas por tratamento (T). Os T foram: 1- concentrado durante as ordenhas e silagem de milho após as ordenhas (C.SM); 2- C.SM + nitromineral (C.SMNM); 3- C.SM + nitroproteico (C.SMNP), 4- C.SMNM + monensina (C.SMNM+MO) e 5- C.SMNP + monensina (C.SMNP+MO). Os suplementos NP e NM adicionados à SM, (C.SMNP e C.SMNM) aumentaram o CMS (P&lt;0,05). A adição de monensina não alterou o CMS nem a DMS (P&amp;gt;0,05). A suplementação...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Consumo; Parâmetros ruminais; F1 Holandês-Zebu; Monensina; Suplementação proteica.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300033

Sperm parameters and biochemical components of goat seminal plasma in the rainy and dry seasons in the Brazilian Northeast: the season's influence on the cooling of semen
Provedor de dados: 45
Autores: Aguiar,G.V.; van Tilburg,M.F.; Catunda,A.G.V.; Celes,C.K.S.; Lima,I.C.S.; Campos,A.C.N.; Moura,A.A.A.; Araújo,A.A.
The present study aimed to verify the caprine semen characteristics during dry and rainy seasons in the Brazilian Northeast, and the influence of these seasons on cooled semen. Seminal volume, concentration, percentage of motile cells, vigor and spermatic morphology, as well as biochemical profile (fructose, citric acid, P, Ca2+, Mg, total proteins and phospholipase A2 activity) were analyzed. It was observed a reduction (P&lt;0.05) in normal sperm morphology, fructose, citric acid, P, Mg and total protein concentration during the dry season, which did not affect the motility, vigor, volume and sperm concentration. Phospholipase A2 activity was increased during the dry season (P&lt;0.05). The analysis of the semen cooled at 4ºC during 48 hours showed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Semen; Spermatozoa; Season; Cooling; Caprine.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100002

Substituição de minerais inorgânicos por orgânicos na alimentação de poedeiras semipesadas
Provedor de dados: 45
Autores: Figueiredo Júnior,J.P.; Costa,F.G.P.; Givisiez,P.E.N.; Lima,M.R.; Silva,J.H.V.; Figueiredo-Lima,D.F.; Saraiva,E.P.; Santana,M.H.M.
Avaliou-se o efeito da suplementação dietética de fontes orgânicas de microminerais para galinhas poedeiras sobre o desempenho e a qualidade do ovo. Foram utilizadas 216 aves de linhagem comercial, distribuídas num delineamento inteiramente ao acaso, com quatro tratamentos e nove repetições, com seis aves por parcela. O experimento teve duração de 140 dias, divididos em cinco ciclos de 28 dias. Os tratamentos consistiram de uma dieta basal formulada para atender às exigências nutricionais das aves, suplementada com minerais na forma inorgânica ou porcentagens de minerais orgânicos: T1 - Basal + 100% minerais inorgânicos; T2 - Basal + 100% minerais orgânicos; T3 - Basal + 66% minerais orgânicos; T4 - Basal + 33% minerais orgânicos. A produção de ovos, peso...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microminerais; Ovos; Quelatos; Suplemento mineral.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200030

Scintigraphy in postoperative follow-up of osteosynthesis of the femur with a bridge plate associated with an intramedullary pin in rabbits
Provedor de dados: 45
Autores: Borges,N.F.; Serakides,R.; Santos,R.G.; Diniz,S.O.F.; Cardoso,V.N.; Ucros,N.S.; Torres,R.C.S.; Cardoso,S.V.; Rezende,C.M.F.
The objective of this work was to monitor the consolidation of the femur after osteosynthesis with a bridge plate associated with the intramedullary pin using scintigraphy. We used seven New Zealand breed male rabbits, at 4 months of age, with a mean weight of 3.5 kg. We performed a three-phase bone scintigraphy with technetium-labeled methylene diphosphonate (99mTc-MDP) before and after surgery, and 20, 50 and 90 days postoperatively. The activity index (AI) was calculated by dividing the average number of uptake counts in the region of the osteotomy by the average number of counts in the corresponding region in the contralateral limb. Radiography was performed before surgery, after surgery, and 15, 30, 45, 60 and 90 days postoperatively. We found a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Scintigraphy; Rabbits; Bridge plate; Biological osteosynthesis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400018

Estratégia de coalimentação na sobrevivência e no crescimento de larvas de Betta splendens durante a transição alimentar
Provedor de dados: 45
Autores: Fosse,P.J.; Mattos,D.C.; Cardoso,L.D.; Motta,J.H.S.; Jasper,A.P.S.; Radael,M.C.; Andrade,D.R.; Vidal Júnior,M.V.
Conduziu-se um experimento com o objetivo de avaliar a influência do período de coalimentação na sobrevivência e no crescimento de larvas de Betta splendens. As larvas foram alimentadas com náuplios de Artemia durante sete dias e, posteriormente, submetidas aos seguintes tratamentos: jejum contínuo; ração contínua; quatro dias de coalimentação + 14 dias de ração; oito dias de coalimentação + 10 dias de ração; 12 dias de coalimentação + seis dias de ração; náuplios de Artemia durante todo o período experimental. Os valores das variáveis de desempenho das larvas do tratamento 12 dias de coalimentação + seis dias de ração e do tratamento náuplios de Artemia foram superiores aos demais tratamentos, exceto para sobrevivência, em que não houve diferença...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Peixes ornamentais; Betta splendens; Larvicultura de peixes; Coalimentação; Transição alimentar.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600030

Efeito de anti-inflamatórios não esteroidais na apoptose de células epidermais lamelares de equinos com laminite
Provedor de dados: 45
Autores: Gonçalves,C.A.P.; Botteon,P.T.L.; Alves,G. E.S.; Faleiros,R.R.; Paes Leme,F.O.; Mendes,H.M.F.; Vasconcelos,A.C.
O objetivo deste trabalho foi avaliar a influência da administração dos anti-inflamatórios não esteroidais (AINEs) cetoprofeno, fenilbutazona e flunixin meglumine sobre o índice apoptótico de células epiteliais do tecido lamelar de cavalos com laminite induzida por administração de amido. Foram empregados 20 equinos hígidos, divididos em quatro grupos experimentais (n=5): solução salina, cetoprofeno, fenilbutazona e flunixin meglumine. O tecido lamelar foi coletado por biópsia, fixado e corado pela técnica de TUNEL. À marcação positiva por essa técnica adicionou-se a avaliação morfológica celular para identificação da apoptose. Não houve diferença significativa no índice apoptótico entre os grupos tratados com anti-inflamatórios e o controle (P&gt;0,05)....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Apoptose; Equinos; Laminite.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500020

Efeito da ordem de parto e da perda de peso durante a lactação no desempenho reprodutivo subsequente de matrizes suínas
Provedor de dados: 45
Autores: Mellagi,A.P.G.; Panzardi,A.; Bierhals,T.; Gheller,N.B.; Bernardi,M.L.; Wentz,I.; Bortolozzo,F.P.
Investigou-se o efeito da ordem de parto (OP) e da perda de peso durante a lactação no desempenho reprodutivo de 666 matrizes suínas. Foram formadas três classes de OP (OP1, OP2 e OP3-5) e duas classes de percentual de perda de peso (≤1% e &amp;gt;1%) durante a lactação. Foram avaliados: taxa de parto, intervalo desmame-estro (IDE) e tamanho da leitegada subsequente. Houve interação de OP versus perda de peso na taxa de parto das fêmeas (P&lt;0,05). As fêmeas OP1 e OP2 tiveram maior chance (P&lt;0,05) de não parir na classe &amp;gt;1% de perda de peso. A maior perda de peso não foi um fator de risco para não parir na condição OP3-5 (P&amp;gt;0,05). Não houve interação de OP versus perda de peso (P&amp;gt;0,05) para IDE e total de leitões nascidos. Fêmeas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Suíno; Ordem de parto; Catabolismo; Lactação; Desempenho reprodutivo.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300030

Efeitos da parede de levedura em dieta úmida na microbiota fecal, na produção de gás e na morfologia intestinal de gatos adultos
Provedor de dados: 45
Autores: Aquino,A.A.; Saad,F.M.O.B.; Santos,J.P.F.; Leite,C.A.L.; Sampaio,G.R.; Feliciano,M.A.R.
O objetivo deste estudo é avaliar os efeitos do extrato de levedura (EPL) em dietas úmidas sobre a microbiota fecal, a produção de gás e a morfologia intestinal de gatos adultos. Foram utilizados 20 gatos adultos, de ambos os sexos, distribuídos ao acaso em quatro tratamentos: 1) dieta comercial úmida (controle); 2) controle + 0,2% de extrato de levedura em matéria seca; 3) controle + 0,4%; e 4) controle + 0,6%. Foram realizadas a microbiologia fecal, a avaliação da morfologia intestinal por meio de exames radiográficos, ultrassonográficos e de colonoscopia, bem como a biópsia para histologia intestinal. Não foram observadas diferenças significativas (p&gt;0,05) para contagem de bactérias do ácido lático e de clostrídio sulfito redutor, área de gás em...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Felinos; Mucosa intestinal; Clostrídios; Lactobacilos; Diagnóstico por imagem.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600013

Spatial regression methods to evaluate beekeeping production in the state of Rio de Janeiro
Provedor de dados: 45
Autores: Tassinari,W.S.; Lorenzon,M.C.; Peixoto,E.L.
Brazilian beekeeping has been developed from the africanization of the honeybees and its high performance launches Brazil as one of the world´s largest honey producer. The Southeastern region has an expressive position in this market (45%), but the state of Rio de Janeiro is the smallest producer, despite presenting large areas of wild vegetation for honey production. In order to analyze the honey productivity in the state of Rio de Janeiro, this research used classic and spatial regression approaches. The data used in this study comprised the responses regarding beekeeping from 1418 beekeepers distributed throughout 72 counties of this state. The best statistical fit was a semiparametric spatial model. The proposed model could be used to estimate the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Beekeeping productivity; Spatial statistics; Spatial regression models.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200035

Reproductive dynamics of Leporinus obtusidens captured downstream from an important hydropower Station in Brazil
Provedor de dados: 45
Autores: Andrade,E.S.; Felizardo,V.O.; Murgas,L.D.S.; Drumond,M.M.; Zangerônimo,M.G.; Costa,S.F.
This study evaluated the reproductive dynamics and gonadal morphology of piaparas (Leporinus obtusidens) captured downstream from the Funil Hydroelectric Power Station. The 107 piaparas evaluated were captured monthly from Sep 2006 to Aug 2007. The data were stratified among the seasons to evaluate gonad maturation and the reproductive period was determined by assessing the gonadosomatic index, hepatosomatic index, abdominal fat index (AFI), weight:length ratio, condition factor and sexual proportion. The reproductive period lasted from winter to summer (Jul-Mar) in females and from spring to autumn (Sept-Jun) in males. AFI was high during and after the reproductive period in females and only during the reproductive period in males. The highest HIS values...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fish; Reproduction; Piracema; Histology; Gonad.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500021

Comparação dos índices de eficiência reprodutiva por diferentes métodos em rebanhos bovinos leiteiros
Provedor de dados: 45
Autores: Pereira,P.A.C.; Ferreira,A.M.; Carvalho,L.B.; Verneque,R.S.; Henry,M.; Leite,R.C.
O presente estudo teve como objetivo promover o levantamento de índices zootécnicos para calcular e comparar a eficiência reprodutiva de rebanhos bovinos leiteiros por diferentes métodos. O intervalo de partos dos rebanhos estudados apresentou uma variação de 13,3 a 15,2 meses por meio dos diferentes métodos utilizados para sua obtenção, não se observando diferença significativa (P&gt;0,05) entre eles. As avaliações pelos métodos de Johnson et al. (1964) e Butendieck et al. (1972) mostraram, respectivamente, eficiência reprodutiva de 79,5 e 77,8%. Embora considerados métodos mais eficientes que o de Willcox et al. (1957), cuja média encontrada para os mesmos rebanhos foi de 90,2%, não se observou diferença significativa entre os resultados obtidos pelos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bovinos; Índices; Eficiência reprodutiva.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500016

Suplemento de 1,25 dihidroxicolecalciferol e redução de cálcio e fósforo disponível para frangos de corte
Provedor de dados: 45
Autores: Souza,C.S.; Vieites,F.M.; Vasconcellos,C.H.F.; Calderano,A.A.; Nunes,R.V.; Ferreira,C.M.; Pereira,T.V.S.; Moraes,G.H.K.
Avaliaram-se o desempenho e o rendimento de carcaça e cortes nobres de frangos de corte machos com suplemento nas rações de 1,25 dihidroxicolecalciferol e redução de cálcio e fósforo disponível. Foi utilizado um delineamento em blocos ao acaso, com seis tratamentos: 0,0; 1,0; 2,0; 3,0; 4,0 e 5,0µg de vitamina D3 ativa/kg de ração, e seis repetições com 17 aves cada. Aos 8 e 42 dias de idade cada unidade experimental foi pesada para avaliação do desempenho. Posteriormente, quatro aves/repetição foram retiradas e abatidas para mensuração do rendimento de carcaça e de cortes nobres. A inclusão da vitamina D3 ativa influenciou positivamente (P&lt;0,05) o ganho de peso e a conversão alimentar com as suplementações de 1,0 e 2,0µg/kg. O consumo de ração não...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avicultura; Calcitriol; Carcaça; Desempenho; Vitamina D.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200031

Granuloma leproide canino na região amazônica - relato de caso
Provedor de dados: 45
Autores: Almeida,M.B.; Priebe,A.P.S.; Fernandes,J.I.; Yamasaki,E.M.; França,T.N.
Descreve-se o primeiro caso de granuloma leproide canino na região amazônica, Brasil, em um canino da raça Boxer, procedente do município de Castanhal, Pará, que apresentava lesões nodulares, alopécicas, firmes, ulceradas e não pruriginosas nas duas pinas. Os nódulos foram retirados cirurgicamente e enviados para análise histopatológica. O exame microscópico revelou marcada infiltração inflamatória constituída por macrófagos, plasmócitos, neutrófilos, linfócitos e células gigantes. A técnica de Ziehl-Neelsen evidenciou grande quantidade de bacilos álcool-ácido resistentes no interior de macrófagos e de células gigantes. Houve forte reatividade ao exame imuno-histoquímico para Mycobacterium spp.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Granuloma leproide; Região amazônica; Patologia.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300004

Natural ventilation and surface temperature distribution of piglet crate heated floors
Provedor de dados: 45
Autores: Mendes,A.S.; Moura,D.J.; Nääs,I.A.; Bender,J.R.
This research had the objective of evaluating the influence of the natural ventilation on the surface temperature distribution of heated crates. The research used six crates from a farrowing room in a commercial swine production farm located in the state of São Paulo, Brazil. Three crates were heated using a heat mat while the other three had the environment heated by incandescent light bulbs (200W) fixed on the lateral wall. The surface temperature of the crate's floor (1.55x0.55m) was registered in 36 points, distributed in 18 quadrants (0.26x0.18m) using an infrared thermometer in three different conditions of the room's natural ventilation: opened, semi-opened, and closed lateral curtain. The isotherms and the temperature distribution of the floor heat...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Thermal comfort; Air velocity; Farrowing; Swine.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200025

Eletrocardiografia contínua (Holter) em cães saudáveis submetidos a diferentes exercícios físicos
Provedor de dados: 45
Autores: Barretto,F.L.; Ferreira,F.S.; Freitas,M.V.; Santos,V.S.; Correa,E.S.; Carvalho,C.B.
O presente trabalho teve como objetivo avaliar os efeitos de diferentes cargas de exercícios físicos no comportamento da frequência e do ritmo cardíaco de cães saudáveis, ao longo das 24 horas de gravação Holter. Utilizaram-se 23 cães, sem restrição de sexo, idade ou raça, dos quais 15 foram submetidos a atividades físicas e pertenciam ao grupo controle. Os resultados mostraram alterações na frequência cardíaca durante as atividades propostas, em que se alcançaram 174±27bpm durante a caminhada leve, 148±30 durante a atividade com bola e 165±26 durante o Cooper. Ademais, observaram-se arritmias, incluindo bloqueios atrioventriculares e extrassístoles e maior número e duração de pausas (até 5s) em repouso, além de uma menor variação na frequência cardíaca...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cão; Exercícios físicos; Holter.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600006

Resposta reprodutiva de vacas de corte associada a marcadores moleculares relacionados à fertilidade
Provedor de dados: 45
Autores: Gottschall,C.; Glanzner,W.G.; Almeida,M.R.; Canellas,L.C.; Martins,C.T.D.C.; Weimer,T.A.; Bittencourt,H.R.; Mattos,R.C.; Gregory,R.M.
O objetivo deste estudo foi buscar associação entre a taxa de prenhez após inseminação e natalidade com marcadores moleculares ligados aos genes do receptor para IGF-1, LHβ, Leptina e receptores do FSH e LH. Utilizaram-se 249 vacas adultas Aberdeen Angus, das quais 199 foram submetidas a protocolos distintos para a IATF, seguida pelo repasse com touros, e 50 vacas formaram o grupo controle representado pelo acasalamento com touros. Foram avaliados o escore de condição corporal (ECC) e o escore de condição ovariana (ECO) ao início da estação reprodutiva. O ECC influenciou a taxa de natalidade, respectivamente de 55,6%, 75,8% e 82,4% (P&lt;0,05) para os animais com ECC menor que 2,5, entre 2,5 a 2,9, e maior ou igual a 3,0, por ocasião da estação...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bovinos (Bos taurus); Escore de condição corporal; IGF-1; Taxa de natalidade.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600004

Óleo essencial de erva-doce na ração de frangos de corte alojados em cama nova e reciclada
Provedor de dados: 45
Autores: Teixeira,E.N.M.; Silva,J.H.V.; Costa,F.G.P.; Silva,C.T.; Goulart,C.C.; Melo,T.S.
O óleo essencial de erva-doce (OED) foi avaliado como alternativa aos antimicrobianos na ração de frangos de corte alojados em cama nova (CNo) e reciclada (CRe). Foram alojadas 1.050 aves, e adotou-se o delineamento inteiramente ao acaso, em que de um a 21 dias as aves foram mantidas somente em CNo, resultando em sete tratamentos com 10 repetições de 15 aves: T1= dieta controle positivo (CP) com antimicrobiano (ANT); T2= dieta controle negativo (CN) sem ANT e sem OED; T3= CN + 0,004% OED; T4= CN + 0,008% OED; T5= CN + 0,016% OED; T6= CN + 0,032% OED e T7= CN + 0,064% OED. De 22 a 42 dias, metade das aves foram criadas em CRe, e a outra metade em CNo, resultando em 14 tratamentos com cinco repetições de 15 aves. O OED foi adicionado pela manhã, na proporção...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atividade antimicrobiana; Extrato vegetal; Desempenho.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300037

A spreadsheet for calculation of ingredients for standardization of requeijão cremoso
Provedor de dados: 45
Autores: Silva,R.C.S.N.; Minim,V.P.R.; Silva,A.N.; Carvalho,A.F.; Minim,L.A.
The standardization of requeijão cheese quality characteristics is a processing stage which is directly influenced by the chemical composition of the raw material. Fat and water concentrations are the main factors that cause variation in quality properties of the requeijão and, when not thoroughly controlled, may cause a lack in standardization of the food. Calculations of ingredients for effective standardization must be made in relation to the final product through of iterative calculations, which makes the manual process unfeasible. Thus, the objective of the present study was to develop a spreadsheet for ingredient calculation, with restrictions being the different concentrations of fat and water in order to standardize the final products. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Quality control; Calculation of ingredients; Excel; Solver function.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200038

Suplementação e cultura de levedura na alimentação de bezerros de corte em pastagem de aveia e azevém
Provedor de dados: 45
Autores: Prohmann,P.E.F.; Branco,A.F.; Jobim,C.C.; Cecato,U.; Teixeira,S; Paris,W; Goes,R.H.T.B.; Oliveira,M.V.M.; Granzoto,F.
Avaliaram-se os efeitos da suplementação e o uso de cultura de levedura sobre o ganho médio diário (GMD), os parâmetros ruminais e a concentração de ureia plasmática em bezerros sob pastejo de aveia preta (Avena strigosa) e azevém (Lolium multiflorum), e estudaram-se a produção e a composição química da forragem. Utilizaram-se 32 bezerros, em pastejo contínuo e lotação variável. Os tratamentos foram: apenas mistura mineral (MM); mistura mineral mais levedura (MML); mistura mineral mais ração (MMR); e mistura mineral mais ração mais levedura (MMRL). A MM contendo casca de soja foi ofertada em 150g/animal/dia, e a levedura foi adicionada à MM na quantidade de 10g/animal/dia. A ração contendo 75% de NDT e 23% de PB foi fornecida para um consumo diário médio...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aditivo; Bovino; Biomassa forrageira; Desempenho; Sacharomices.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400032

Efeitos do trimetilaminoetano (TES) e ringer lactato em sêmen de macacos-aranha mantidos em cativeiro ( Ateles paniscus e A. marginatus)
Provedor de dados: 45
Autores: Silva,K.S.M.; Ribeiro,H.F.L.; Valle,R. R.; Sousa,J.S.; Silva,A.O.; Barbosa,E. M.
The performances of the diluents TES and CEBRAN II were compared as cryopreservatives of semen from non human primates of the genus Ateles. The experiment was carried out using one Ateles marginatus and two Ateles paniscus specimens, males and adults, maintained in the same captivity conditions at the National Center of Primates (CENP-SVS/MS). The animals were subjected to clinical and andrological examinations - testicular biometry - before the semen collection by eletroejaculation. Evaluations of motility and forward movement in the fresh semen were made. Semen were made dilution was made with the diluents TES and CEBRAN II. The ejaculates were diluted with the diluents (2:1proportion), packed in 0.25mL plastic straws and cryopreserved in liquid...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sêmen; Diluentes; Ateles; Cativeiro.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300044

Desempenho de cordeiros em confinamento alimentados com dieta exclusiva de concentrado com diferentes porcentagens de proteína
Provedor de dados: 45
Autores: Cirne,L.G.A.; Oliveira,G.J.C.; Jaeger,S.M.P.L.; Bagaldo,A.R.; Leite,M.C.P.; Oliveira,P.A.; Macedo Junior,C.M.
O presente experimento foi realizado com o objetivo de avaliar o desempenho de cordeiros em confinamento alimentados com dieta exclusiva de concentrado com diferentes porcentagens de proteína. Foram utilizados 24 cordeiros mestiços da raça Santa Inês, não castrados, com aproximadamente 180 dias de idade, peso vivo médio de 25kg, confinados, num delineamento experimental inteiramente ao acaso, com quatro tratamentos e seis repetições. O consumo voluntário de matéria seca, matéria orgânica, proteína bruta e nutrientes digestíveis totais, além do ganho de peso diário e total, da conversão e da eficiência alimentar dos cordeiros, não foram influenciados (P&gt;0,05) pela porcentagem de proteína na dieta. As dietas com 18 e 20% de proteína bruta apresentaram...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cordeiro; Consumo; Ganho de peso; Proteína.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100037

Taxas de perda gestacional até 60 dias são afetadas por características cíclicas da égua receptora de embrião Mangalarga Marchador
Provedor de dados: 45
Autores: Eulálio,N.C.; Borges,L.M.; Lopes,E.P.; Gomes,P.S.; Valle,G.R.
Foram avaliadas taxas de gestação aos 15 dias e perda gestacional entre 15 e 60 dias em 430 transferências de embrião (TE) em éguas Mangalarga Marchador. Diagnósticos de gestação foram realizados entre 15 e 60 dias após TE. Para avaliar os efeitos da duração da fase folicular da receptora, foram formados três grupos: até três dias (&lt;3d); quatro a seis dias (4-6d); sete ou mais dias (&amp;gt;7d). Para avaliar os efeitos do tamanho do folículo pré-ovulatório da receptora, foram formados outros três grupos: menor ou igual a 35mm (Ø&lt;35); maior que 35 e menor ou igual a 45mm (35&lt;Ø&lt;45); maior que 45mm (Ø&amp;gt;45). Os grupos foram comparados pelo teste qui-quadrado (P&lt;0,05). Quanto à duração da fase folicular, as taxas de gestação foram...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Equino; Transferência de embrião; Receptora; Características cíclicas; Perda gestacional.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200015

Efeito de estratégias nutricionais para redução de nutrientes poluidores nos dejetos sobre o desempenho e as características de carcaça de suínos
Provedor de dados: 45
Autores: Pena,S.M.; Barbosa,F.F.; Lopes,D.C.; Rostagno,H.S.; Albino,L.F.T.; Silva,F.C.O.
Avaliou-se o efeito de estratégias nutricionais sobre o desempenho e as características de carcaça de suínos dos 30 aos 100kg. Foram utilizados 120 suínos, distribuídos em delineamento experimental de blocos ao acaso, com cinco tratamentos e oito repetições de três animais por unidade experimental. Os tratamentos usados foram: dieta-controle = dieta com alta proteína bruta sem aminoácidos industriais; dieta baixa PB= dieta com baixa proteína bruta com aminoácidos industriais; dieta fitase = dieta-controle com suplementação de fitase; dieta orgânica = dieta-controle suplementada com minerais inorgânico-orgânicos; e dieta composta = dieta com baixa proteína bruta suplementada com aminoácidos industriais, fitase e minerais inorgânico-orgânicos. As dietas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Suíno; Ambiente; Fitase; Mineral; Proteína.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100033

Concentração de lactato sérico em ovelhas e cordeiros mestiços (1/2 Suffolk) nascidos em eutocia
Provedor de dados: 45
Autores: Silva,L.P.; Lourenço,M.L.G.; Grandi,M.C.; Ulian,C.M. Vela; Sudano,M.J.; Chiacchio,S.B.
O objetivo do estudo foi avaliar a concentração de lactato sanguíneo venoso em ovelhas e em cordeiros neonatos imediatamente após o parto eutócico. Foram utilizadas 14 ovelhas, sendo nove da raça Suffolk e quatro mestiças e 20 cordeiros neonatos sadios (machos e fêmeas). O efeito do sexo, da raça e do número de cordeiros por parto foi investigado, bem como a possível correlação entre a concentração de lactato materno e neonatal. Não houve diferença entre machos e fêmeas, em relação à raça (Suffolk e mestiços), contudo a concentração de lactato foi mais elevada em cordeiros gêmeos ou trigêmeos quando comparado a cordeiros uníparos. Houve correlação positiva entre a concentração materna e a neonatal, sendo que quanto maior a concentração de lactato materno,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hiperlactatemia; Ovinos; Neonatos; Parto eutócico.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400008

Associação entre proteínas do plasma seminal, motilidade e viabilidade espermática em coelhos submetidos a doping genético
Provedor de dados: 45
Autores: Urtiaga,G; Campos,V.F; Collares,T.F; Leon,P.M.M; Deschamps,J.C; Seixas,F.K; Collares,T.
Neste trabalho foi estudada a correlação entre o perfil proteico do plasma seminal e a motilidade e viabilidade espermática em coelhos submetidos ao tratamento com vetores de expressão contendo o gene da eritropoetina (EPO) e com EPO recombinante humana. Foram identificadas, em coelhos submetidos ao tratamento com vetor de DNA contendo o gene da EPO, duas bandas proteicas associadas a alterações na motilidade espermática - 48kDa à baixa motilidade (P&lt;0,05) e 18kDa à alta motilidade (P&lt;0,05) - e esse fator foi associado a maior viabilidade espermática (P&lt;0,05). Em coelhos submetidos ao tratamento com EPO recombinante, um fator proteico, 63kDa, associou-se à alta motilidade espermática (P&lt;0,05), enquanto dois, 26 e 40kDa, foram associados à alta...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reprodução; Eritropoetina; Proteína; Sêmen; Transfecção.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100012

Helminthes and protozoan of farmed pirarucu (Arapaima gigas) in eastern Amazon and host-parasite relationship
Provedor de dados: 45
Autores: Marinho,R.G.B.; Tavares-Dias,M.; Dias-Grigório,M.K.R.; Neves,L.R.; Yoshioka,E.T.O.; Boijink,C.L.; Takemoto,R.M.
The parasitofauna in the giant Amazon basin, pirarucu (Arapaima gigas Schinz, 1822) cultured in fish farms from the state of Amapá, in eastern Amazonia (Brazil) was investigated. Of the 100 examined fish, 90.0% were parasitized by Ichthyophthirius multifiliis (Ciliophora), Dawestrema cycloancistrium, Dawestrema cycloancistrioides (Monogenoidea) and Polyacanthorhynchus macrorhynchus (Acanthocephala), which had an aggregated distribution pattern. The highest infection rates were caused by I. multifiliis and the lowest by P. macrorhynchus. Infection rates were different for each fish farm, due to different water quality and management characteristics. A negative correlation was found between the intensity of monogenoideans D. cycloancistrium and D....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazonia; Fish farm; Freshwater fish; Parasites; Sanity.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400035

Suplementação de colina em dietas para frangos de corte machos em fase de crescimento
Provedor de dados: 45
Autores: Pompeu,M.A.; Baião,N.C.; Lara,L.J.C.; Ecco,R.; Rocha,J.S.R.; Fernandes,M.N.S.; Barbosa,V.M.; Miranda,D.J.A.
Avaliaram-se os efeitos dos níveis de suplementação de colina em dietas para frangos de corte, de 22 a 40 dias de idade, sobre o desempenho, a composição de carcaças e fígados, bem como as características macroscópicas e histopatológicas dos fígados. O período de criação foi de um a 40 dias de idade, sendo que o período experimental foi de 22 a 40 dias de idade. Até o 21º dia de idade, todas as aves receberam a mesma ração à qual foram adicionados 400mg colina/kg. No 22º dia, os frangos foram distribuídos em cinco tratamentos, nos quais os níveis testados de suplementação de colina foram: zero, 400, 800, 1.200 e 1.600mg/kg, com seis repetições de 30 aves cada. As rações experimentais, formuladas à base de milho, farelo de soja e farinha de carne/ossos,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Colina; Desempenho; Fígado; Frangos de corte.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600035

Ação da melatonina sobre a dinâmica sanguínea de ratas prenhes e sobre a histogênese do baço e do timo da prole
Provedor de dados: 45
Autores: Araújo,A.C.C.; Wanderley-Teixeira,V.; Vilaça-Junior,P.E.A.; Soares,A.F.; Lemos,A.J.J.M.; Silva,F.C.A.; Teixeira,A.A.C.
Investigou-se a influência da melatonina sobre o hemograma de ratas prenhes e dos filhotes e sobre a histogênese e morfometria do baço e do timo dos filhotes. A melatonina foi administrada na dose 0,5mg/kg de peso corporal, dissolvida em 0,1mL de etanol e diluída em 0,3mL de solução salina. Para análise do hematócrito, contagem total de hemácias e contagem total e diferencial dos leucócitos, amostras de sangue foram coletadas no sétimo, 14ºe 21ºdias de prenhez e aos 10 dias de nascimento dos filhotes. Cortes histológicos do baço e do timo da prole foram utilizados para histoquímica e morfometria. A ausência da melatonina promoveu alterações no hemograma apenas no terço final da gestação, sem interferir no hemograma dos filhotes, e induziu modificações...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rato; Melatonina; Hemograma; Prenhez; Órgãos de defesa; Imunidade.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200016

Trânsito de suídeos em Minas Gerais, Brasil
Provedor de dados: 45
Autores: Oliveira,C.S.F.; Gonçalves,J.P.M.; Utsch,J.B.; Nicolino,R.R.; Silva,M.X.; Haddad,J.P.A.
Minas Gerais ocupa a quarta posição entre os estados brasileiros com maior produção de suídeos. A suinocultura envolve intenso trânsito de animal e, consequentemente, forma complexas redes de fluxo. Com a movimentação, esses animais podem carrear agentes patogênicos que podem ser disseminados por meio dessa rede de contatos. Diante disso, este estudo tem como objetivo descrever e analisar o trânsito de suídeos em Minas Gerais para compreender os caminhos mais prováveis para a disseminação de possíveis surtos. Os dados foram fornecidos pelo Instituto Mineiro de Agropecuária, originados das 56.823 Guias de Trânsito Animal emitidas no ano de 2009. A movimentação dos 5.354.735 suídeos foi analisada segundo a sua finalidade. O trânsito mais intenso ocorreu com...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Movimento de suínos; Redes de fluxo; Saúde animal; Grafos.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500008

Avaliação de probiótico na alimentação de poedeiras comerciais no segundo ciclo de postura
Provedor de dados: 45
Autores: Nunes,R.V.; Scherer,C.; Silva,W.T.M.; Appelt,M.D.; Pozza,P.C.; Vieites,F.M.
Avaliou-se o efeito da inclusão de probiótico sobre o desempenho e a qualidade dos ovos de poedeiras semipesadas no segundo ciclo de postura. Foram utilizadas 450 aves com 69 semanas de idade, distribuídas aleatoriamente em um delineamento inteiramente ao acaso, em cinco tratamentos, seis repetições e 15 aves por unidade experimental. A ração experimental foi à base de milho e farelo de soja e suplementada com probiótico composto por Lactobacillus acidophilus, Streptococcus faecium e Bifidobacterium bifidum. O experimento teve a duração de 16 semanas e foi dividido em quatro períodos de 28 dias cada, nos quais as aves receberam cinco rações experimentais contendo diferentes porcentagens de inclusão de probiótico, 0; 0,05; 0,10; 0,15 e 0,20%. Não foi...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Galinha; Produção de ovos; Qualidade de ovos; Probiótico.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100035

Isolamento de Chaetomium spp. em lesões subcutâneas de um cão: relato de caso
Provedor de dados: 45
Autores: Braga,C.A.S.B.; Romani,A.F.; Balestra,F.S.; Ribeiro,E.L.
Caracterizou-se clinicamente a infecção pelo Chaetomium spp. em um cão, e descreveu-se seu isolamento e identificação. Ao exame dermatológico foram observadas pápulas nas orelhas, no tronco lateral e nos membros pélvicos. Ao rompimento de uma dessas pápulas, fluiu um líquido serosanguinolento com consequente úlcera no local. Foi colhido material para isolamento micológico, por meio de raspado das pápulas da orelha e da cauda. O diagnóstico foi micose subcutânea por Chaetomium spp.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cão; Micose subcutânea; Chaetomium spp.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100006

Exigências líquidas de energia e proteína de tourinhos Santa Gertrudes confinados, recebendo alto concentrado
Provedor de dados: 45
Autores: Ribeiro,G.M.; Henrique,W.; Leme,P.R.; Lanna,D.P.D.; Alleoni,G.F.; Sampaio,A.A.M.
Com o objetivo de determinar as exigências de energia e proteína para ganho de tourinhos Santa Gertrudes, 33 tourinhos, com idade de 12 meses e peso inicial médio de 314,6±33,2kg, foram confinados durante 115 dias, após 56 dias de adaptação. Seis animais foram abatidos após adaptação, para determinação da composição química corporal inicial. Os animais receberam dietas contendo 80% de concentrado, avaliando-se a inclusão de 0; 4,5; e 9,0% do subproduto concentrado da produção de lisina na matéria seca. As exigências de energia líquida de ganho (ELg) foram estimadas em função do peso de corpo vazio (PCVZ) e do ganho de PCVZ (GPCVZ), e as exigências líquidas de proteína para ganho (PLg) foram estimadas em função do GPCVZ e da energia retida (ER). As equações...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bovinos; Mantença; Ganho; Requerimentos; Subproduto concentrado da produção de lisina.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200020

Potencial evocado auditivo para diagnóstico de surdez em gato com síndrome vestibular periférica
Provedor de dados: 45
Autores: Palumbo,M.I.P.; Jark,P.C.; Machado,L.H.A.; Machado,V.M.V.; Resende,L.A.L.; Borges,A.S.
Potencial evocado auditivo é um método eletrodiagnóstico que permite avaliação funcional das vias auditivas desde a orelha média até o tronco encefálico. O uso desse teste em medicina veterinária é pouco difundido no Brasil. O presente artigo relata o uso do potencial evocado auditivo para detecção de deficiência auditiva unilateral em um gato com síndrome vestibular periférica secundária a otite média.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Surdez; Potencial evocado auditivo; Otite; Gato.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600014

Fotoperíodo sobre parâmetros fisiológicos relacionados ao estresse em alevinos de tilápia-do-nilo
Provedor de dados: 45
Autores: Veras,G.C.; Murgas,L.D.S.; Zangeronimo,M.G.; Rosa,P.V.; Leon,J.A.S.; Salaro,A.L.
Com este trabalho objetivou-se avaliar a influência de diferentes fotoperíodos sobre parâmetros fisiológicos relacionados ao estresse em alevinos de tilápia-do-nilo (Oreochromis niloticus). Foi utilizado um delineamento inteiramente casualizado, com cinco tratamentos (0L; 6L; 12L; 18L; 24L) e quatro repetições, sendo o aquário a unidade experimental. Cento e sessenta alevinos de tilápia, 3,21±0,05g e 4,35±0,07cm, foram distribuídos em 20 aquários de 20 litros, em sistema de recirculação com temperatura controlada em 27oC e densidade de oito peixes por aquário. Por um período de 75 dias, a alimentação foi realizada duas vezes ao dia com ração extrusada contendo 40% de proteína bruta. Ao final do período experimental, os dados de crescimento, sobrevivência,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cortisol; Glicose; Homeostase; Oreochromis niloticus.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500023

Anemia mielotísica por osteopetrose em um cão: relato de caso
Provedor de dados: 45
Autores: Mendes Neto,E.C.; Gruchouskei,L.; Viott,A.M.; Nunes,A.C.B.; Fukushima,F.B.; Oyafuso,M.K.
A osteopetrose é uma doença rara, caracterizada pelo aumento generalizado da densidade óssea. Tem como característica principal, a reabsorção osteoclástica defeituosa, resultando no acúmulo de massa óssea. Além disso, pode ocorrer retardo do crescimento, desnutrição progressiva, anemia e caquexia. O presente relato descreve o caso de uma cadela, com aproximadamente nove meses de idade, sem raça definida, com histórico de apatia e disorexia. Hemogramas seriados demonstraram pancitopenia persistente. Vários exames laboratoriais foram realizados para excluir doenças como erliquiose, leishmaniose e cinomose, porém todos foram negativos. O mielograma constatou hipocelularidade relativa por provável aplasia/hipoplasia medular. Exames radiográficos evidenciaram o...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anemia arregenerativa; Pancitopenia; Mielograma; Aumento da densidade óssea.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500005

Estudo retrospectivo de exames citológicos realizados em um Hospital Veterinário Escola em um período de cinco anos
Provedor de dados: 45
Autores: Rosolem,M.C.; Moroz,L.R.; Rodigheri,S.M.; Corrêa Neto,U.J.; Porto,C.D.; Hanel,J.S.
Avaliaram-se os resultados de exames citológicos realizados em seis anos e determinou-se o tipo de distúrbio (inflamatório, infeccioso, proliferativo) mais comum. Aspectos epidemiológicos, como espécie, raça, sexo e idade, foram levados em consideração. Foram realizadas 270 avaliações citológicas e destas a prevalência foi de neoplasmas (53%). A espécie canina foi a mais ocorrente, com 92% dos casos. As fêmeas somaram 53% do total. A idade variou de um a 17 anos, sendo o intervalo de seis a 10 anos mais ocorrente (40% dos casos). As neoplasias de células redondas foram as mais prevalentes, seguidas das neoformações mamárias.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pequenos animais domésticos; Citologia aspirativa; Neoplasma.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300019

Efeito dos níveis de energia para poedeiras comerciais no período final de produção sobre o desempenho, a conversão alimentar e energética e a qualidade de ovos
Provedor de dados: 45
Autores: Ribeiro,P.A.P.; Matos Júnior,J.B.; Queiroz,A.C.A.; Lara,L.J.C.; Baião,N.C.
Foram utilizadas 1200 poedeiras comerciais da linhagem Lohmann LSL, com 64 semanas, em gaiolas convencionais. Estas foram divididas em cinco grupos, de acordo com o nível de energia metabolizável aparente corrigida pelo nitrogênio (EMAn) presente em sua dieta: 2700kcal/kg; 2775kcal/kg; 2850kcal/kg; 2925kcal/kg; e 3000kcal/kg, com seis repetições. As aves receberam as rações, á base de milho e farelo de soja, por 16 semanas. O delineamento experimental foi inteiramente ao acaso, e as médias foram submetidas à regressão polinomial e ao teste de Kruskal-Wallis. O aumento de EMAn não exerceu efeito sobre a produção, a massa e o peso de ovos, bem como sobre o peso das aves e a viabilidade. O consumo de ração diminuiu de acordo com o aumento na energia da dieta,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Poedeiras; Energia; Qualidade de ovos; Produção de ovos.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500030

Índice gonadossomático e correlações entre dimensões e peso testiculares na codorna japonesa (Coturnix coturnix japonica) aos 60 dias de idade
Provedor de dados: 45
Autores: Lanna,L.L.; Soares,F.A.; Santos,T.M.; Oliveira,J.N.; Marques-Júnior,A.P.
As dimensões e o peso testicular foram avaliados em 25 machos adultos de codornas japonesas (Coturnix coturnix japonica) e correlacionados entre si, a fim de se buscar obter informações que possibilitem a criação de um parâmetro preditivo da capacidade de produção espermática. As aves foram abatidas e os testículos removidos para mensuração e pesagem. As dimensões e o peso entre os testículos esquerdo e direito foram comparados. Os parâmetros testiculares foram correlacionados entre si por meio da determinação do coeficiente de correlação linear. O índice gonadossomático também foi determinado, indicando alocação de 3,68% do peso corporal em testículos nos machos avaliados, resultado maior do que os descritos na literatura. Apesar da diferença de formato...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dimensões testiculares; Peso testicular; Índice gonadossomático; Codorna japonesa.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400003

Aditivos alimentares na dieta de bovinos confinados
Provedor de dados: 45
Autores: Barducci,R.S.; Sarti,L.M.; Millen,D.D.; Pacheco,R.D.L.; Baldin,S.R.; Parra,F.S.; Putarov,T.C.; Martins,C.L.; Arrigoni,M.D.B.
O objetivo do presente trabalho foi avaliar o efeito da inclusão do preparado de anticorpos policlonais (PAP) e/ou da monensina sódica (MON) sobre o desempenho, as características da carcaça, o perfil de ácidos graxos da carcaça (PAG) e a concentração de lipoproteínas sanguíneas (CLS) de bovinos confinados. O delineamento experimental foi inteiramente ao acaso, em arranjo fatorial 2 x 2, com medidas repetidas no tempo, sendo os fatores a inclusão ou não de MON e PAP avaliados em dois períodos, em que 72 bovinos machos da raça Brangus, não castrados, foram alocados em 24 baias (três animais/baia), totalizando seis repetições por tratamento. Não foi observado efeito (P&amp;gt;0,05) da inclusão do PAP para nenhuma das varáveis de desempenho e características...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Confinamento; Imunização passiva; Ionóforo.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600002

Biomarcadores histológicos em duas espécies de bagres estuarinos da Costa Maranhense, Brasil
Provedor de dados: 45
Autores: D.B.P.Sousa,; Almeida,Z.S.; Carvalho-Neta,R.N.F.
Neste estudo objetivou-se validar lesões branquiais como biomarcadores em peixes de importância econômica (Sciades herzbergii e Bagre bagre) capturados pela pesca artesanal em dois locais diferenciados da Baía de São Marcos, MA, a fim de selecionar um táxon como bioindicador capaz de ser utilizado em programas de biomonitoramento. O primeiro ponto (S1) foi utilizado como uma área de referência - Ilha dos Caranguejos -, e o segundo ponto (S2) foi considerado potencialmente impactado - Complexo Portuário de São Luís, MA. Encontraram-se várias alterações histológicas para as duas espécies em S2, destacando-se: estreitamento lamelar, teleangectasia, fusão e descolamento do epitélio da lamela secundária. Lesões branquiais em B. bagre coletados em S1 também...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioindicador; Contaminação aquática; Monitoramento ambiental; Peixe; Maranhão.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200011

Efeito de dietas contendo plasma sanguíneo desidratado sobre características microbiológicas, imunológicas e histológicas de leitões leves ao desmame
Provedor de dados: 45
Autores: Dalto,D.B.; Gavioli,D.F.; Oliveira,E.R.; Silva,R.A.M.; Tarsitano,M.A.; Altmann,Á.H.S.; Braz,D.B.; Kobayashi,R.K.T.; Venâncio,E.J.; Bridi,A.M.; Bracarense,A.P.F.R.L.; Silva,C.A.
Foram avaliados os efeitos do plasma sanguíneo desidratado (PSD) sobre desempenho, perfil imunológico, histológico, microbiológico e peso de órgãos de leitões leves, desmamados aos 21 dias de idade. Foram utilizados 24 leitões, com idade média inicial de 21 dias, em delineamento experimental completamente ao acaso. Os tratamentos foram: T1 - animais pesados ao desmame, sem suplementação com PSD; T2 - animais leves ao desmame, suplementados com 10g/animal/dia de PSD; T3 - animais leves ao desmame, suplementados com 20g/animal/dia de PSD; T4 - animais leves ao desmame, sem suplementação com PSD. A adição de 20g de PSD na dieta melhorou o ganho diário de peso, aumentou o peso (g/kg) do baço e o título de IgA no soro entre 21 e 31 dias de idade. A inclusão de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Suíno; Plasma sanguíneo desidratado; Intestino delgado; Imunoglobulinas; E.coli.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100028

Isolation and identification of main mastitis pathogens in Mexico
Provedor de dados: 45
Autores: Castañeda Vázquez,H.; Jäger,S.; Wolter,W.; Zschöck,M.; Castañeda Vazquez,M.A.; El-Sayed,A.
The present work is a large epidemiological study aiming to detect the prevalence of subclinical mastitis and to investigate the major udder pathogens in Jalisco State, western Mexico. For this purpose, 2205 dairy cows, representing 33 Mexican dairy herds, were involved. Of 2205 cows, 752 mastitic animals were diagnosed and only 2,979 milk samples could be obtained for further investigation. All 2979 milk samples were subjected to California Mastitis Test (CMT) to differentiate clinical cases from subclinical ones where 1996 samples (67 %) reacted positively. Of these, 1087 samples (54.5%) came from cows suffering from clinical cases of mastitis. Bacteriological identification of the causative agents revealed the presence of a major group of pathogens...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bovine mastitis; Corynebact spp.; Mexico; S.aureus; S.agalactiae.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200012

Study of bacteria isolated from the foot pad of Spheniscus magellanicus with and without bumblefoot
Provedor de dados: 45
Autores: Osório,L.G.; Xavier,M.O.; Ladeira,S.R.L.; Silva Filho,R.P.; Faria,R.O.; Vargas,G.D'Á.; Cabana,A.L.; Mello,J.R.B.; Meireles,M.C.A.
The bumblefoot or pododermatitis is among the diseases with the highest morbidity in Magellanic penguins, sometimes evolving to septicemia and death. Therefore, this study aimed to relate the main species involved in the disorder, as well as the in vitro susceptibility profile of the microorganisms against routine antimicrobial usage in Veterinary Medicine. During two years in vivo material was harvested from 200 footpads (n=100 animals) for microbiological analysis and in vitro susceptibility tests against the Antibiotic enrofloxacin, streptomycin, penicillin and cephalosporin. Bacteria have been identified both as part of permanent and transient microbiota, also being associated to 100% of the pododermatitis cases. The most prevalent genus were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pododermatitis; Magellanic penguins; Bacterial susceptibility.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100008

Características de carcaça de cabritos criados em dois sistemas de terminação
Provedor de dados: 45
Autores: Salles,F.M.; Zambom,M.A.; Alcalde,C.R.; Macedo,F.A.F.; Souza,R.; Gomes,L.C.; Dias,F.B.; Molina,B.S.L.
Avaliaram-se as características da carcaça de cabritos Saanen confinados, Saanen e 7/8 Boer - 1/8 Saanen semiconfinados, bem como a influência de grupo genético e sistema de terminação sobre o rendimento comercial, índice de compacidade, não constituintes, área de olho de lombo, força de cisalhamento, gordura, teor de umidade e teor de extrato etéreo. Utilizaram-se 31 machos inteiros, com aproximadamente 128 dias de idade e 22,9±2,4kg de peso vivo. Destes, 22 eram da raça Saanen e nove animais eram mestiços 7/8 Boer - 1/8 Saanen. Os animais da raça Saanen foram divididos em dois grupos de 11 animais, sendo um grupo mantido em confinamento e outro em semiconfinamento, enquanto os mestiços foram mantidos em semiconfinamento. Compararam-se os sistemas de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Caprino; Carne; Sistema de terminação; Longissimus dorsi.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600039

Benzocaine and clove oil as anesthetics for pejerrey (Odontesthes bonariensis) fingerlings
Provedor de dados: 45
Autores: Morato-Fernandes,J.; Tavares,R.A.; Rocha,C. B.; Pouey,J.L.O.F.; Piedras,S.R.N.
Pejerrey (Odontesthes bonariensis) is a native species from Rio Grande do Sul, Uruguay and Argentina where it is of great economic importance for artisanal fishing. One difficulty in laboratory research with pejerrey is related to its sensitivity, as it presents higher basal cortisol levels than other freshwater species. For this reason, the aim of this work was to evaluate the efficiency of benzocaine and clove oil as anesthetics for pejerrey fingerlings. Two experiments were done where fingerlings (57±7.8mm and 1.1±0.44g) were exposed to benzocaine with concentrations between 40mgL-1 and 120mgL-1 and to clove oil with concentrations between 12mgL-1 and 75mgL-1. Survival, anesthesia induction time and recovery time for each pharmaceutics were evaluated....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anesthesia; Survival; Induction; Recovery; Aquaculture.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500024

Comportamento ingestivo de cordeiros alimentados com torta de macaúba
Provedor de dados: 45
Autores: Azevedo,R.A.; Rufino,L.M.A.; Santos,A.C.R.; Ribeiro Júnior,C.S.; Rodriguez,N.M.; Geraseev,L.C.
Avaliaram-se os efeitos de diferentes porcentagens (0, 10, 20 e 30%) de inclusão da torta de macaúba (TM) no comportamento ingestivo de 24 cordeiros Santa Inês, com média de cinco meses de idade e peso vivo de 23,9kg, distribuídos em delineamento em blocos ao acaso, com quatro tratamentos e seis repetições, durante 60 dias de confinamento. Foram avaliados os tempos médios despendidos com alimentação, ruminação (TR), ócio (TO), tempo de mastigação total (TMT), eficiência de alimentação (EA MS e EA FDN) e eficiência de ruminação, além do número de bolos ruminados (NBR) e número diário de mastigações merícicas (MMnd). A adição de TM à dieta aumentou linearmente o TR, TMT, NBR, MMnd e EA FDN e reduziu de forma linear o TO, em consequência do maior teor de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Confinamento; Coprodutos; Terminação; Ovinos.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200027

Seleção genômica ampla para curvas de crescimento
Provedor de dados: 45
Autores: Silva,F.F.; Rocha,G.S.; Resende,M.D.V.; Guimarães,S.E.F.; Peternelli,L.A.; Duarte,D.A.S.; Azevedo,C.
Foi proposta uma metodologia para avaliação genética de curvas de crescimento considerando-se informações de marcadores SNPs (Single Nucleotide Polymorphisms). Em um primeiro passo foram ajustados modelos de crescimento não lineares (logístico) aos dados de peso-idade de cada animal, e em um segundo passo as estimativas dos parâmetros de tais modelos foram consideradas como fenótipos em um modelo de regressão (LASSO Bayesiano - BL) cujas covariáveis foram os genótipos dos marcadores SNPs. Este enfoque possibilitou estimar os valores genéticos genômicos (GBV) para peso em qualquer tempo da trajetória de crescimento, refletindo na confecção de curvas de crescimento genômicas, as quais permitiram a identificação de grupos de indivíduos geneticamente...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: SNP; LASSO bayesiano; Dados longitudinais.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500033

Qualidade do leite de propriedades familiares praticantes de integração lavoura-pecuária em função do uso do solo
Provedor de dados: 45
Autores: Santos,D.B.; Vanin,J.; Silva,C.G.; Bondan,C.; Bortoluzzi,E.C.
O objetivo do estudo foi investigar o uso do solo em propriedades familiares (PF) manejadas sob integração lavoura-pecuária (ILP) em bacia hidrográfica e relacionar com a qualidade do leite. Para tal, 14 PF foram caracterizadas e agrupadas quanto ao uso do solo (Grupos 1, 2 e 3) e monitoradas quanto à qualidade do leite, durante os meses de maio de 2010 a fevereiro de 2011. Nas amostras de leite, avaliou-se o teor de gordura, proteína e sólidos não gordurosos. Observou-se que o uso do solo objetivando o cultivo de grãos em detrimento do pastejo animal influencia negativamente o teor de gordura e proteína, em média 6,3% e 5,4%, respectivamente, sobretudo no período de verão. Assim, o planejamento de uso do solo em PF manejadas sob ILP é fundamental, pois a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Planejamento; Bacia hidrográfica; Qualidade do leite.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400038

Glicerina bruta no suplemento e seus efeitos nas características da carcaça e nos componentes do peso vivo de cordeiros lactentes
Provedor de dados: 45
Autores: Pellegrin,A.C.R.S.; Pires,C.C.; Mello,R.O.; Müller,L.; Carvalho,S.; Lopes,J.F.
Objetivou-se avaliar o efeito da porcentagem de glicerina bruta em suplementos sobre as características da carcaça e os componentes do peso vivo de cordeiros lactentes mantidos em pasto de azevém. Foram utilizados 32 cordeiros lactentes, distribuídos nos tratamentos: 0, 10, 20 e 30% de glicerina bruta na matéria seca, em substituição ao milho, no suplemento isoproteico (18% de PB na matéria seca) fornecido diariamente em quantidade equivalente a 2% do peso corporal. As porcentagens de glicerina bruta tiveram efeito linear decrescente sobre peso de carcaça quente, peso de carcaça fria, rendimento de carcaça quente e rendimento de carcaça fria, enquanto as perdas pelo jejum aumentaram. O peso da paleta e o peso do costilhar diminuíram, enquanto a proporção...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodiesel; Componentes não carcaça; Glicerol; Rendimento.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500032

Milk quality according to the daily range in farm production in the Mesoregion Central Mineira and Oeste of Minas Gerais regions, Brazil
Provedor de dados: 45
Autores: Borges,L.R.; Fonseca,L.M.; Martins,R.T.; Oliveira,M.C.P.P.
The objective of this work was to characterize milk production from the Central Mineira and Oeste Mesoregions regions in Minas Gerais State, Brazil, according to quality parameters such as somatic cell count, total bacteria count, and composition for specific production ranges. Average results for milk fat, protein, total and nonfat solids were compliant with Brazilian legal requirements (IN-62/2011) in all the production ranges selected. Average somatic cell counts (SCC) complied with the legal requirements of 600,000 cells/mL, except for the range with a daily production above 1,000 liters. However, average maximum values of 400,000 cells/mL are recommended for good milk quality. Total bacterial count was the most critical quality factor, with the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Milk quality; Somatic cell count; Total bacterial count; Central Mineira mesoregion.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400041

Detecção de locos de características quantitativas nos cromossomos 1, 2, 3, 12, 14, 15 e X de suínos: características de desempenho
Provedor de dados: 45
Autores: Paixão,D.M.; Braccini Neto,J.; Paiva,S.R.; Carneiro,P.L.S.; Pinto,A.P.G.; Sousa,K.R.S.; Nascimento,C. Souza do; Verardo,L.L.; Hidalgo,A.M.; Lopes,P.S.; Guimarães,S.E.F.
Mapeou-se quantitative trait loci (QTL) associados a características de desempenho nos cromossomos 1, 2, 3, 12, 14, 15 e X de suínos pertencentes a uma população F2, formada a partir do cruzamento entre dois machos da raça naturalizada brasileira Piau e 18 fêmeas comerciais (Landrace x Large White x Pietrain). O mapa genético de ligação da população foi construído após a genotipagem dos animais para 35 marcadores microssatélites. As estimativas do conteúdo de informação polimórfica indicaram que os marcadores microssatélites foram adequados para as análises de QTL. Os dados foram analisados pelo mapeamento por intervalo usando-se o programa GridQTL. Encontraram-se seis QTL, sendo que o QTL genômico para idade ao abate atingiu a significância de 5% de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Raça Piau; Marcador molecular; Nível genômico; Suíno.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100031

Levedura de cana-de-açúcar spray dry na alimentação de suínos na fase de crescimento e terminação
Provedor de dados: 45
Autores: Poveda-Parra,A.R.; Moreira,I.; Furlan,A.C.; Oliveira,G.C.; Carvalho,P.L.O.; Toledo,J.B.
Foi estudado o valor nutricional (digestibilidade total e ileal) de duas leveduras spray dry (cana-de-açúcar - LEV35 e cerveja+cana-de-açúcar - LEV40) e o efeito da sua inclusão em rações para suínos na fase de crescimento e terminação. Os valores de ED (kcal/kg) da LEV35 e da LEV40 foram 3.496 e 3.901 e EM (kcal/kg) foram 3.475 e 3.862, respectivamente. Os valores de lisina, metionina+cistina e treonina digestível para a levedura de cana-de-açúcar e da levedura de cerveja+cana-de-açúcar são 2,66 e 2,64, 1,11 e 1,03, 1,95 e 1,92, respectivamente. No desempenho foram utilizados 40 suínos com peso inicial de 34,39± 7,57kg (crescimento) e de 62,45± 5,68kg (terminação), distribuídos em delineamento inteiramente casualizado com cinco níveis de inclusão (0, 5,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aminoácidos digestíveis; Cânula ileal; Levedura de cerveja; Subproduto; Valor nutricional.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100032

Caracterização bromatológica e agronômica de genótipos de milho para produção de silagem
Provedor de dados: 45
Autores: Vieira,V.C.; Martin,T.N.; Menezes,L.F.G.; Assmann,T.; Ortiz,S.; Bertoncelli,P.; Piran Filho,F.A.; Schimitz,T.H.
O objetivo deste trabalho foi avaliar as características bromatológicas e agronômicas dos genótipos de milho para a produção de silagem dos cultivares do Ensaio Centro Superprecoce da Rede Nacional de Genótipos de Milho, bem como avaliar se a base genética (híbridos simples, duplos, tripos, intervarietais e variedades cultivadas) ou a dureza dos grãos (duro, semiduro e dentado mole) alteram a indicação de cultivares de milho para silagem. O experimento foi realizado na área experimental da Universidade Tecnológica Federal do Paraná (campus Dois Vizinhos). Os trinta e dois genótipos avaliados foram colhidos quando os grãos encontravam-se no estádio pastoso a farináceo, ensilados em microssilos de PVC e desensilados após 53 dias. Avaliou-se a relação entre...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Base genética; Dureza do grão; Indicação de cultivares.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300034

Estabilidade oxidativa e perfil de ácidos graxos do leite de vacas suplementadas com óleo de linhaça na dieta associado ou não ao selenito de sódio injetável
Provedor de dados: 45
Autores: Cardozo,L.; Cecim,M.; Soares,E.; Moreira,D.K.; Schuster,R.; Richards,N.S.P.S.; Unfer,T.C.; Quatrin,A.; Fuke,G.; Roehrs,M.
Avaliou-se o efeito da suplementação com óleo de linhaça na dieta, com ou sem injeção de selenito de sódio, sobre o perfil de ácidos graxos e sobre a estabilidade oxidativa do leite de vacas leiteiras. Catorze vacas foram distribuídas em três tratamentos: as do grupo 1, que receberam diariamente 400mL de óleo de linhaça (LIN); as do grupo 2, 400mL de óleo de linhaça + 0,2mg/kg de selenito de sódio IM (LINSe); e as do grupo 3 (controle), que não foram tratadas (C). O óleo foi fornecido diariamente após 15 dias da aplicação única de selenito de sódio, e o experimento teve duração de quatro semanas. Os animais suplementados com o óleo de linhaça produziram leite com altas porcentagens de ácido linoleico conjugado (CLA) e de ômega 3, contudo mais suscetível à...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidante; Ácido linoleico conjugado; Selenito de sódio; Glutationa peroxidase; TBARS.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300031

Comportamento ingestivo de ovinos alimentados com diferentes fontes de fibra
Provedor de dados: 45
Autores: Figueiredo,M.R.P.; Saliba,E.O.S.; Borges,I.; Rebouças,G.M.N.; Aguiar e Silva,F.; Sá,H.C.M.
Avaliou-se o efeito de dietas distintas sobre o comportamento ingestivo (alimentação, ruminação e ócio) em ovinos. Dezesseis carneiros, castrados, confinados em gaiolas de metabolismo, com peso médio de 45,1kg, foram distribuídos aleatoriamente em quatro tratamentos: T1- silagem de cana + concentrado; T2- silagem de cana + concentrado + 15% de caroço de algodão; T3- silagem de cana e T4- feno de Tifton 85. Os animais foram submetidos à observação visual durante 24 horas a intervalos de 10 minutos. Houve diferença entre os tratamentos com relação aos tempos despendidos com alimentação e ócio, sendo que o tratamento com feno de Tifton 85 apresentou os mais altos valores, 6,04 h/dia, para o tempo de alimentação, e os mais baixos valores para o tempo de ócio,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ovinos; Mastigação merícica; Ócio; Ruminação.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200026

Efeitos da suplementação de colina sobre o desempenho de poedeiras comerciais
Provedor de dados: 45
Autores: Vasconcelos,R.J.C.; Baião,N.C.; Lara,L.J.C.; Ecco,R.; Machado,A.L.C.; Pompeu,M.A.; Rocha,J.S.R.; Miranda,D.J.A.
Os efeitos da suplementação de colina em dietas para poedeiras (Dekalb White) foram avaliados nas fases de cria/recria e de postura. O delineamento foi em esquema fatorial 2x5 (duas suplementações de colina de uma a 16 semanas de idade x cinco níveis de colina suplementada de 18 a 44 semanas de idade). Os níveis de colina utilizados foram 0, 200, 400, 600 e 800mg/kg para cada grupo. A suplementação de colina em frangas com uma a 16 semanas de idade não afeta o desempenho nem as características macroscópicas e histopatológicas dos fígados durante essa fase. Os efeitos dos níveis de suplementação de colina sobre o desempenho das galinhas na fase de postura dependem da suplementação ou não dessa vitamina nas fases de cria/recria; ou seja, as aves que recebem...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Colina; Fígado; Recria; Poedeira; Postura.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400026

Estimativa do intervalo pós-morte em um canino (Canis lupus familiaris Linnaeus 1758) pela entomologia forense em Cabedelo-PB, Brasil: relato de caso
Provedor de dados: 45
Autores: Martins,G.; Santos,W.E. dos; Creão-Duarte,A.J.; Silva,L.B.G. da; Oliveira,A.A.F.
O intervalo pós-morte (IPM) é um instrumento importante de diagnóstico relacionado à prática forense. O uso de insetos tem sido relatado como um modo eficiente para estimá-lo, quando o cadáver encontra-se em estágio avançado de decomposição. Objetivou-se com este trabalho estimar o IPM com base em evidências entomológicas em um canino. Foram coletadas larvas de moscas no cadáver e encaminhadas ao laboratório de entomologia, onde foram criadas e eclodiram adultos da espécie Chrysomya albiceps (Wiedemann, 1819). Somando-se os dados abióticos de temperatura e umidade relativa do local de coleta e do local de criação, estimou-se um IPM mínimo de 3,34 dias do momento da postura dos ovos pelas moscas até a coleta das larvas. Com base nos resultados obtidos,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mosca varejeira; Calliphoridae; Canidae; Medicina veterinária legal.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400024

Infusão contínua de morfina ou fentanil, associados à lidocaína e cetamina, em cães anestesiados com isofluorano
Provedor de dados: 45
Autores: Belmonte,E.A.; Nunes,N.; Thiesen,R.; Lopes,P.C.F.; Costa,P.F.; Barbosa,V.F.; Moro,J.V.; Batista,P.A.C. S.; Borges,P.A.
A técnica de analgesia multimodal, por meio da infusão contínua de fármacos, pode ser empregada para diminuir a incidência de sensibilização central durante a anestesia. Avaliaram-se as características cardiorrespiratórias, durante o procedimento de artroscopia de joelho, em cães anestesiados com isofluorano e monitorados por meio do índice biespectral, submetidos à infusão contínua de morfina ou fentanil, associada à lidocaína e cetamina. Utilizaram-se 16 cães adultos, machos ou fêmeas, os quais foram distribuídos aleatoriamente em dois grupos, denominados MLK - que recebeu morfina (3,3μg/kg/min), lidocaína (50μg/kg/min) e cetamina (10μg/kg/min) ou FLK - em que foi substituída a morfina pelo fentanil (0,03μg/kg/min). Os cães foram pré-tratados com...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cão; FLK; Índice biespectral; MLK; Opioide.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400019

Composição química e valores energéticos de alimentos alternativos para leitões
Provedor de dados: 45
Autores: Wesendonck,W.R.; Oliveira,V.; Gewehr,C.E.; Silva,Y.L.; Bordignon,L.A.F.
O presente experimento foi realizado para determinar a composição química e os valores energéticos de resíduo de bolacha (RB), resíduo de wafer (RW), resíduo de chocolate caramelizado (RCC) e resíduo de bombons e chocolates (RBC) para leitões. Foram utilizados 10 leitões castrados, com peso médio inicial de 7,40±0,97kg, alojados individualmente em gaiolas de metabolismo e distribuídos em cinco tratamentos: 1) dieta referência (DR); 2) 60% DR + 40% RB; 3) 60% DR + 40% RW; 4) 80% DR + 20% RCC; e 5) 80% DR + 20% RBC. O experimento foi repetido em três períodos consecutivos, com duração de 12 dias cada um, sendo sete destinados à adaptação e cinco destinados à coleta. Foi utilizada a metodologia de coleta total de fezes e urina e o óxido férrico como marcador...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Suíno; Digestibilidade; Metabolismo.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100029

Limiar anaeróbico (V4) e frequência cardíaca de cavalos Crioulos condicionados para prova funcional
Provedor de dados: 45
Autores: Amaral,L.A.; Torres,A.; Rabassa,V.; Martins,C. F.; Correa,M. N.; Nogueira,C.E.W.
Determinou-se o limiar anaeróbico (V4) de 23 cavalos Crioulos hígidos em treinamento. Os animais selecionados foram submetidos a testes de desempenho, composto por três etapas de velocidade progressiva de 6m/s, 8m/s e 10m/s, com duração de cinco minutos cada etapa, até que fosse atingida a concentração de 4mmol/dL de lactato sanguíneo. As concentrações de lactato sanguíneo elevaram-se a partir da velocidade de exercício de 6,0m/s, sendo que 20 animais (90%) atingiram 4mmol/L de lactato na velocidade entre 6 - 8m/s, com média de frequência cardíaca que variou de 121 a 140bpm. Concluiu-se que a V4 do cavalo Crioulo está entre as velocidades de 6 - 8m/s e a frequência cardíaca entre 121 - 140bpm.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cavalo Crioulo; Limiar anaeróbico; Exercício; Lactato.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100027

Taxa de prenhez e de perda de gestação em receptoras de embriões bovinos produzidos in vitro
Provedor de dados: 45
Autores: Scanavez,A.L.; Campos,C.C.; Santos,R.M.
Avaliaram-se resultados de 1100 transferências de embriões, realizadas de novembro de 2008 a fevereiro de 2009, em um programa comercial de produção de embriões. Foram utilizados embriões ½ Holandês/Gir (n=139) e ¾ Holandês/Gir (n=961) de qualidade um e oitavo dia (D8) para transferência a fresco. As receptoras foram novilhas ½ Nelore/Simental, sincronizadas, usando-se o protocolo: dia zero (D0) - introdução do dispositivo intravaginal com 1g de progesterona + 2mg de benzoato de estradiol (BE); dia 5 (D5) - aplicação de 150μg de D-cloprostenol (PGF2α) + 400UI de gonadotrofina coriônica equina (eCG); dia 8 (D8) ‒ remoção do dispositivo intravaginal; e dia 9 (D9) ‒ aplicação de 1mg de BE. Foram analisados os efeitos do grupo genético, o estágio de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Novilha; Perda gestacional; Transferência de embriões.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300017

Consumo alimentar residual e sua relação com medidas de desempenho e eficiência e características in vivo da carcaça de cordeiros
Provedor de dados: 45
Autores: Paula,E.F.E.; Monteiro,A.L.G.; Souza,D.F.; Prado,O.R.; Nomura,T.M.; Stivari,T.S.S.; Silva,C.J.A.; Santana,M.H.A.
Avaliou-se o consumo alimentar residual (CAR) e a conversão alimentar (CA) de 20 cordeiros, com o objetivo de estimar as correlações entre essas variáveis com medidas de desempenho e com características in vivo da carcaça. Os animais tiveram o consumo de MS (CMS) mensurado por 65 dias e foram pesados a cada 13 dias para obtenção do ganho médio diário (GMD). Foram considerados o peso vivo inicial (PVI), o peso vivo final (PVF), o peso metabólico (PM), o GMD, a taxa de crescimento relativo (TCR), a taxa de Kleiber (TK), a CA, o CMS e o CMS em percentual do PV (CMSPV). As avaliações de carcaça foram realizadas por ultrassom. O CAR se mostrou correlacionado com o CMS (+0,81), o CMSPV (+0,90) e a CA (+0,63). Correlações significativas foram encontradas entre CA...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Deposição de gordura; Eficiência alimentar; Ile de France; Ovinos; Ultrassonografia.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200037

Proteinograma sérico, com ênfase em proteínas de fase aguda, de bovinos sadios e bovinos portadores de enfermidade aguda de ocorrência natural
Provedor de dados: 45
Autores: Simplício,K.M.M.G.; Sousa,F.C.; Fagliari,J.J.; Silva,P.C.
Nas últimas décadas, as proteínas de fase aguda (PFAs) tornaram-se biomarcadores de escolha em medicina humana para identificação e monitoração de doenças. Não há razão para imaginar que tais pesquisas clínicas não sejam igualmente úteis na medicina veterinária. Com o objetivo de verificar a importância das PFAs como biomarcadores de doenças inflamatórias em bovinos, determinou-se o proteinograma sérico, por meio da técnica de eletroforese SDS-PAGE, com interesse especial nas PFAs. Foram utilizados 30 animais, distribuídos em dois grupos: 15 bovinos sadios e 15 bovinos doentes (cinco com mastite estafilocócica, cinco com fotossensibilização e cinco com onfaloflebite). Os animais foram submetidos a colheitas diárias de sangue durante sete dias, enquanto...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ceruloplasmina; Fibrinogênio; Haptoglobina; Transferrina; Glicoproteína ácida-α1.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500011

Consumo, digestibilidade aparente de nutrientes e balanços de nitrogênio e hídrico de ovinos alimentados com silagens de cultivares de capim-búfel
Provedor de dados: 45
Autores: Souza,R.A.; Voltolini,T.V.; Araújo,G.G.L.; Pereira,L.G.R.; Moraes,S.A.; Mistura,C.; Belem,K.V.J.; Moreno,G.M.B.
Objetivou-se no presente estudo determinar o consumo, digestibilidade aparente da matéria seca e nutrientes, além dos balanços de nitrogênio (BN) e hídrico (BH), de ovinos alimentados com silagens de capim-búfel. As silagens das cultivares de capim-búfel avaliadas foram Tanzânia, Buchuma e Biloela. Utilizaram-se 21 ovinos, machos, castrados, mestiços Santa Inês x Sem Padrão de Raça Definido, com peso corporal médio inicial de 31,8±3,16kg, mantidos em gaiolas metabólicas. Foi utilizado um delineamento inteiramente casualizado com sete repetições. Não foram observadas diferenças nos consumos de MS em g/dia (919,2) e porcentagem do peso corporal (2,9). De modo geral, os coeficientes de digestibilidade da matéria seca variaram de 37,7% a 60,0%. Os BN e BH...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cenchrus ciliaris; Conservação de forragem; Valor nutritivo.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200032

In vitro probiotic potential of Lactobacillus spp. isolated from fermented milks
Provedor de dados: 45
Autores: Cunha,A.F.; Acurcio,L.B.; Assis,B.S.; Oliveira,D.L.S.; Leite,M.O.; Cerqueira,M.M.O.P.; Souza,M.R.
The potential of in vitro probiotic Lactobacillus spp. was evaluated in fermented milks marketed in Belo Horizonte, MG, Brazil. Of the samples analyzed, 86.7% had at least 10(6) CFU/mL of Lactobacillus spp., complying with the Brazilian quality standards for fermented milks. Furthermore, 56.7% had minimum count ranging from 10(8) to 10(9) CFU/mL, which is in accordance with legal parameters. The remaining 43.3% would not be able to satisfactorily guarantee benefits to consumers. The amount of Lactobacillus spp. varied between batches of products, which may indicate failures in monitoring during manufacture, transport or storage. All strains of Lactobacillus spp. showed some inhibitory activity against the indicator microorganisms, being more pronounced...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lactobacillus spp.; Fermented milks; Probiotic.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600040

Cyrtoneurina pararescita (Diptera: Muscidae) (Couri, 1995) como novo hospedeiro de Nasonia vitripennis (Walker) (Hymenoptera: Pteromalidae)
Provedor de dados: 45
Autores: Marchiori,C.H.; Borges,L.M.F.; Ferreira,L.L.
This study reports the occurrence of Nasonia vitripennis (Walker) (Hymenoptera: Pteromalidae) as parasitoid of Cyrtoneurina pararescita (Diptera: Muscidae) (Couri, 1995) in bovine feces obtained in Goiânia, Goiás state, Brazil. Bovine manure samples, collected at two weeks intervals, were taken to the laboratory and the pupae were extracted by water flotation. Each pupa was placed in capsules of gelatin until the emergence of dipterous or their parasitoids. The parasitism percentage was of 2.4%. This paper reports the first occurrence of N. vitripennis as parasitoid of C. pararescita worldwide.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Novo hospedeiro; Muscidae; Parasitoide; Controle biológico.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500042

Viabilidade de duas novas técnicas para inseminação intrauterina laparoscópica em ovinos
Provedor de dados: 45
Autores: Feranti,J.P.S.; Brun,M.V.; Zanella,E.; Messina,S.A.; Schuh,R.; Santos,F.R.; Brambatti,G.
Avaliaram-se duas novas técnicas de inseminação laparoscópica intrauterina com o uso de agulha espinhal em ovinos. Foram realizadas quatro etapas experimentais, sendo os animais separados em dois grupos em cada etapa. Para tanto, foram utilizados os posicionamentos quadrupedal e dorsal. Realizou-se a inseminação de 80 ovinos após a sincronização de cio. Verificou-se que os acessos laparoscópicos propostos foram viáveis para a inseminação em ovinos. Considerou-se que a inseminação em posicionamento quadrupedal foi tecnicamente mais difícil se comparada ao acesso laparoscópico em decúbito dorsal, porém, com o aprimoramento da técnica e na dependência dos resultados quanto aos índices de prenhez, poderá se tornar procedimento adequado para a inseminação de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ovelhas; Videolaparoscopia; Agulha espinhal; Útero; Prenhez.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300011

Establishing the hypoosmotic swelling test for sperm analysis in collared peccaries (Pecari tajacu)
Provedor de dados: 45
Autores: Santos,E.A.A.; Sousa,P.C.; Peixoto,G.C.X.; Simão,B.R.; Oliveira,M.F.; Silva,A.R.
Soluções hiposmóticas com diferentes concentrações (0, 50, 100, 150, 200mOsm/L) foram testadas para a avaliação funcional da membrana espermática de catetos (n=13). Foi verificado que o número de espermatozoides reagidos diminuía (P&lt;0,05) de acordo com o aumento da osmolaridade do meio. A maior porcentagem (71,8%) de espermatozoides reagidos, bem como a menor variação nas respostas osmóticas, foi detectada com o uso de água destilada (0mOsm/L) (P&lt;0,05), a qual também apresentou a menor variação nos resultados, de acordo com os erros padrão verificados. Em conclusão, a água destilada aparenta ser uma solução adequada para o uso no teste hiposmótico para sêmen de catetos.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Collared; Peccary; Semen; Andrology; Wild animal.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400044

Sistema computacional para auxílio ao diagnóstico em exames de tuberculose animal
Provedor de dados: 45
Autores: Gracioso,A.C.N.R.; Souza Filho,R.A.M.; Gonzaga,A.; Fernandez,F.J.R.
The results obtained in evaluating the efficiency of a Neuro-Fuzzy System NEFCLASS (Neuro-Fuzzy Classification) in image classification of cattle tuberculosis, based on its texture features extracted using the wavelet transform are presented. For testing, images of animal tissues diagnosed with tuberculosis were used, as provided by the Tuberculosis Laboratory at the Instituto Biológico de São Paulo. The results of this study can serve as a basis for developing systems for diagnosis aimed at reducing human effort, by automating all or parts of the classification of images, helping lab technicians to sort amongst different pathologies.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: CBIR; Wavelets; Neuro-fuzzy; Tuberculosis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200045

Reproductive parameters of dairy goats submitted to estrus synchronization with prostaglandin F2α associated or not to hCG at estrous onset
Provedor de dados: 45
Autores: Esteves,L.V.; Brandão,F.Z.; Cruz,R.C.; Souza,J.M.G.; Oba,E.; Facó,O.; Fonseca,J.F.
The objective of this study was to evaluate the efficiency of two doses of PGF associated or not to hCG on the associated reproductive parameters in dairy goats. A total of 29 goats received two doses of 30µg d-cloprostenol latero-vulvar at a 10 day intervals (Day 1 and Day 10). The does were allocated according to body weight and body condition score into two treatments, to receive hCG (250IU) or saline at estrus onset. After the second dose of PGF, estrus was monitored and ultrasound exams were performed twice daily. All does were inseminated 16h after estrus onset. Blood collection was performed every day for progesterone assay. The use of hCG at estrus onset did not affect any studied parameter and therefore the data were pooled. Estrous response rate...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Artificial insemination; D-cloprostenol; Estrus synchronization; Goats; Sexual behavior.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600001

Antibodies against rickettsiae from spotted fever groups in horses from two mesoregions in the state of Santa Catarina, Brazil
Provedor de dados: 45
Autores: Medeiros,A.P.; Moura,A.B.; Souza,A.P.; Bellato,V.; Sartor,A.A.; Vieira-Neto,A.; Moraes-Filho,J.; Labruna,M.B.
Bacteria of the Rickettsia genus are agents of Brazilian Spotted Fever (BSF), a zoonotic disease which is difficult to diagnose, evolves quickly and can result in death. Antibodies against Rickettsia spp. in horses were studied, by means of Indirect Immunofluorescence Assay (IFAT ≥64), in 150 blood samples taken from animals in two Santa Catarina mesoregions (Planalto Serrano and Vale do Itajaí). The overall occurrence of Rickettsia spp. antibodies in horses was 18.66%, with cross-reactivity occurring in all positive samples for at least two of the species tested. Separately, according to the species, 25 (16.66%) samples were positive for R. rickettsii, 15 (10%) for R. parkeri, 22 (14.66%) for R. amblyommii, 23 (15.33%) for R. rhipicephali, 16 (10.66%) for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brazilian spotted fever; Rickettsia spp; IFAT; Horses; Santa Catarina.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600019

Avulsão das origens lateral e medial do músculo gastrocnêmio em gata: relato de caso
Provedor de dados: 45
Autores: Tudury,E.A.; Figueiredo,M.L.; Silva,C.E.S.; Araújo,B.M.; Fernandes,T.H.T.; Silva,A.C.; Amorim,M.M.A.
Poucos relatos têm descrito avulsões das cabeças lateral ou medial e avulsão bilateral das origens do músculo gastrocnêmio em cães e gatos. Este trabalho descreveu o primeiro relato de avulsão das origens lateral e medial do músculo gastrocnêmio em gata, bem como a técnica de reinserção cirúrgica. Uma gata, sem raça definida, com 10 anos, apresentou claudicação do membro posterior direito com postura plantígrada. Avulsão bilateral das cabeças do músculo gastrocnêmio foi diagnosticada com base nos achados do exame clínico. A técnica de reinserção foi realizada com fio mononáilon, numa sutura de Kessler modificada, ancorada em um orifício criado na porção metafisária distal do fêmur. Após período de imobilização externa complementar seguida de fisioterapia,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gato; Tendão de Aquiles; Ruptura proximal.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300015

Incidência de endometrite citológica e desempenho reprodutivo em vacas de corte Nelore
Provedor de dados: 45
Autores: Carneiro,L.C.; Mendes,F.M.; Oliveira,R.S.B.R.; Pádua,M.F. Silva; Ferreira,A.F.; Saut,J.P.E.; Santos,R.M.
Avaliaram-se a incidência de endometrite citológica dos 29 aos 90 dias pós-parto e seus efeitos sobre o desempenho reprodutivo de vacas de corte Nelore submetidas a uma estação de monta (EM) de 90 dias. Foram utilizadas 49 matrizes Nelores, sem histórico de retenção de placenta, sem a presença de uma infecção uterina clínica, e com escore de condição corporal acima de 2,5. Realizou-se exame ultrassonográfico para avaliar a parede uterina e a atividade ovariana. O diagnóstico de endometrite citológica foi feito pela técnica de lavagem uterina, considerando-se caso de endometrite ≥5% de neutrófilos em cada lâmina. A incidência de endometrite citológica do rebanho foi de 22%, não diferindo entre as categorias analisadas (primíparas versus multíparas)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lavado uterino; Neutrófilos; Reprodução; Sincronização do estro.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300020

Morfologia e biometria do timo em araras dos gêneros Ara e Anodorhynchus
Provedor de dados: 45
Autores: Lima,R.Z.; Gonçalves,E.S.; Santana,M.I.; Lima,E.M.M.; Silva,F.O.C.; Severino,R.S.; Drummond,S.S.; Armando,A.P.R.N.
Foram utilizados 12 exemplares de Ara ararauna - seis fêmeas e seis machos -, cinco exemplares de Ara chloropterus (uma fêmea e quatro machos) e dois exemplares de Anodorhynchus hyacinthinus - uma fêmea e um macho -, todos adultos, doados por criadouro particular, após óbito natural. Os lobos foram dissecados e medidos com paquímetro - comprimento x largura x espessura - e analisados quanto ao peso, à topografia e à morfologia individual. Independentemente do gênero, foram identificados, em 17 casos (89,5%), lobos tímicos nos antímeros cervicais esquerdo e direito, e em oito casos (42,1%), lobos na cavidade celomática. Os lobos apresentaram formatos alongados - 52,6% -, arredondados - 21,1% - ou ovalados - 15,8% -, posicionados preferencialmente...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Araras; Anatomia comparada; Aves silvestres; Morfologia do timo.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100016

Methods for thermal inactivation of pathogens in mozzarella: a comparison between stretching and pasteurization
Provedor de dados: 45
Autores: Raimundo,D.C.; Travaglini,R.G.; Souza,G.O.; Starikoff,K.R.; Sanches,S.A.; Souza,O.B.; Balian,S.C.; Telles,E.O.
This study aimed to evaluate the efficiency of stretching in the reduction of pathogens when compared to milk pasteurization, the official method to ensure safe cheese production. Whole buffalo milk was contaminated with Mycobacterium fortuitum, Listeria monocytogenes, Salmonella typhimurium, and Staphylococcus aureus. Part of the milk was used in mozzarella production and the other part was submitted to holder pasteurization. Pathogens were quantified before and after thermal processing (mozzarella stretching and milk pasteurization). Pasteurization and stretching led to the following reductions in log cycles, respectively: 4.0 and 6.3 for Mycobacterium sp.; 6.0 and 8.4 for Listeria sp.; &gt;6.8 and 4.5 for Staphylococcus sp.; and &gt;8.2 and 7.5 for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mozzarella; Stretching; Pasteurization; Pathogenic bacteria.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200039

Adição da parede celular de levedura (Saccharomyces cerevisiae) na dieta para frangos de corte
Provedor de dados: 45
Autores: Barroso,D.C.; Vieira,A.A.; Lima,C.A.R.; Trindade,B.S; Gomes,A.V.C.; Souza,M.M.S.; Corrêa,G.S.S.
Os efeitos da parede celular de Saccharomyces cerevisiae (PCSc) na dieta para frangos foram avaliados com base nos tratamentos: dieta referência com avilamicina (AV); dieta referência (DR); DR com 0,1% de PCSc (PCSc0,1); DR com 0,2% de PCSc (PCSc0,2); DR com 0,3% de PCSc (PCSc0,3). O delineamento foi o de blocos ao acaso, com cinco tratamentos e seis repetições de 10 aves, totalizando 300 frangos, machos. No período de nove a 21 dias de idade, o tratamento PCSc0,3 influenciou negativamente no ganho de peso (631g), e no período de 34 a 39 dias, o tratamento PCSc0,1 proporcionou melhor ganho de peso (461g) em relação ao tratamento com o antimicrobiano. O maior peso vivo ao abate, 2571g, foi obtido no tratamento PCSc0,1. Os pesos absolutos de sobrecoxa e...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Frangos de corte; Prebiótico; Saccharomyces cerevisiae.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400029

Efeito da adição de glutationa peroxidase e cisteína ao diluidor de congelação do sêmen equino
Provedor de dados: 45
Autores: Barros,L.O.; Silva,S.V.; Almeida,F.C.; Silva,E.C.B.; Carneiro,G.F.; Guerra,M.M.P.
Foram utilizados ejaculados (n=25) de garanhões para avaliar o efeito de glutationa peroxidase (GPx) e cisteína na viabilidade de espermatozoides congelados. O sêmen foi diluído em Botu Crio, com antioxidantes, e foram formados os grupos: G1, Controle; G2, 1U GPx ; G3, 5U GPx; G4, 0,5mM cisteína; G5, 1mM cisteína. Depois foi envasado em palhetas (0,5mL) e congelado. Após descongelação, 37°C por 30 segundos, alíquotas foram analisadas quanto à integridade de membrana plasmática (IMP) e acrossoma (IAc), potencial de membrana mitocondrial (PMM) e cinética, nos tempos zero (T0) e 60 minutos (T60). GPx 5U e cisteína 0,5mM determinaram maior (P&lt;0,05) IAc em T0 do que em T60. Cisteína 1mM resultou em maior (P&lt;0,05) IAc em T60 do que GPx 1 e 5U e cisteína...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Equino; Antioxidantes; Espermatozoide; Criopreservação.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200019

Hemodynamic and antiarrhythmic effects of lidocaine or amiodarone in dogs anesthetized with halothane
Provedor de dados: 45
Autores: Moro,J.V.; Nunes,N.; Barbosa,V.F.; Thiesen,R.; Lopes,P.C.F.; Belmonte,E.A.; Borges,P.A.; Batista,P.A.C.S.; Costa,P.F.
The effects of continuous rate infusion of lidocaine or amiodarone on hemodynamic and arrhythmias induced by epinephrine in dogs anesthetized with halothane were evaluated. Thirty dogs were distributed into three groups: amiodarone group (AG), lidocaine group (LG), or control group (CG). Anesthesia was induced with etomidate and maintained with halothane. Thirty minutes later a bolus and continuous rate infusion (CRI) of amiodarone in AG, lidocaine in LG and NaCl at 0.9% in CG was administered. After 10 minutes, arrhythmias were induced by epinephrine CRI at 0.0001mg/kg/minute, which was increased in 0.0001mg/kg/minute every ten minutes, until 0.0003mg/kg/minute. The measurements were performed 30 minutes after the induction of anesthesia (T0), 10 minutes...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Canine; Antiarrhythmogenicity; Anesthesia.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400011

Efficiency of inactive vaccines against contagious agalactia in Brazil
Provedor de dados: 45
Autores: Campos,A.C.; Azevedo,E.O.; Alcântara,M.D.B.; Silva,R.B.S.; Cordeiro,A.A.; Mamede,A.G.; Melo,M.A.; Rosendo Nascimento,E.; Castro,R.S.
This paper aims to evaluate the efficiency of three inactive vaccines against contagious agalactia prepared with samples of Mycoplasma agalactiae isolated in Brazil and different adjuvants. Vaccine 1 adsorbed with aluminum hydroxide was administered in 23 goats (Gc1) and 13 sheep (Gov1); vaccine 2 containing Montanide IMS-2215-VG was administered in 22 goats (Gc2) and 12 sheep (Gov2) and vaccine 3, containing Montanide Gel-01 was administered in 22 goats (Gc3) and 12 sheep (Gov3). All animals were negative for Ma at indirect ELISA and received two doses of 2mL each, subcutaneously, within a 21 day interval. Five animals from each species were used as control. Seventy-five days after the booster, four animals from each vaccinated group and two from the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mycoplasma agalactiae; Goats; Sheep; Immunization; ELISA.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500018

Efeito da densidade de estocagem no desenvolvimento inicial do acará-bandeira (Pterophyllum scalare)
Provedor de dados: 45
Autores: Gonçalves Júnior,L.P.; Pereira,S.L.; Matielo,M.D.; Mendonça,P.P.
Avaliou-se a influência da densidade de estocagem no desenvolvimento inicial do acará-bandeira (Pterophyllum scalare). O desempenho produtivo foi avaliado pelo ganho de peso (GP), ganho de comprimento total (GCT), ganho de comprimento padrão (GCP), ganho de altura (GA), taxa de crescimento específico (TCE), taxa de desenvolvimento específico (TDE) e sobrevivência (S). Para realização do experimento, foram utilizadas 300 pós-larvas de peso médio inicial de 0,0012g, comprimento total médio de 4,11±0,93mm, altura média inicial de 4,84±0,87mm e comprimento padrão médio de 1,54±0,25mm. Essas foram distribuídas em delineamento inteiramente ao acaso, em cinco tratamentos com quatro repetições. Os tratamentos (T) foram constituídos por cinco diferentes densidades...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Peixe ornamental; Larvicultura; Intensificação do cultivo.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400033

Implante de condrócitos homólogos em defeitos osteocondrais de cães: padronização da técnica e avaliação histopatológica
Provedor de dados: 45
Autores: Iamaguti,L.S.; Brandão,C.V.S.; Mota,L.S.L.S.; Ranzani,J.J.T.; Ribeiro,L.M.; Rossetto,V.J.V.; Padovani,C.R.; Felisbino,S.L.
Padronizou-se a metodologia para cultura de condrócitos em cães e avaliou-se seu implante em lesões osteocondrais, utilizando-se a membrana biossintética de celulose (MBC) como revestimento. Dez cães, adultos e clinicamente sadios, foram submetidos à artrotomia das articulações fêmoro-tíbio-patelares. Defeitos de 4mm de diâmetro e profundidade foram induzidos no sulco troclear de ambos os membros. MBC foi aplicada na base e na superfície das lesões. Os defeitos do membro direito foram preenchidos com condrócitos homólogos cultivados formando o grupo-tratado (GT); os do membro esquerdo, sem implante celular, foram designados grupo-controle (GC). A evolução pós-operatória foi analisada com especial interesse nos processos de reparação da lesão, por meio de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cão; Cartilagem articular; Cultura celular; Imuno-histoquímica; Morfometria.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100013

Morfometria do aparelho genital e resposta superovulatória de coelhas suplementadas com geleia real
Provedor de dados: 45
Autores: Dutra,P.A.; Barbosa,L.P.; Santana,A.L.A.; Aguiar,C.S.; Souza,R.S.; Cardoso Neto,B.M.; Araújo,M.L.; Araújo,R.C.S.A.
Avaliou-se o efeito da suplementação com geleia real sobre a morfometria do aparelho genital, resposta superovulatória e qualidade embrionária de coelhas. Trinta e seis fêmeas foram distribuídas em quatro grupos (G), sendo: G1 (n=9) formado por animais não suplementados com geleia real, e G2, G3 e G4 (n=9 em cada grupo) por animais suplementados com 10, 20 e 40mg/dia de geleia real. A superovulação consistiu na aplicação de 40UI de gonadotrofina coriônica equina, seguida por 40UI de gonadotrofina coriônica humana, via intramuscular, 48 horas após, e submetidas à cobrição natural. Os animais foram sacrificados, e os embriões coletados 72 horas após a cópula. Não houve diferença estatística entre tratamentos para as variáveis analisadas. O peso médio do...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coelho; Embrião; Reprodução; Superovulação.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300013

Swimmer syndrome affecting an entire litter of kittens
Provedor de dados: 45
Autores: Cardilli,D.J.; João,C.F.; Voorwald,F.A.; Faria,J.L.M.; Tinucci-Costa,M.; Toniollo,G.H.
Swimmer syndrome is a developmental abnormality characterized by a delay in the ability to walk and move about and is manifested in newborns between 15 and 20 days of age. These animals exhibit constant coxofemoral articulation abduction, and their pelvic limbs move caudally and laterally. This case reports a litter of three crossbreeds kittens (26 days old) with swimmer syndrome. Each animal was treated with physical therapy and shackle bandages that kept their pelvic limbs bent and close to the body. After seven days, all of the animals exhibited normal ambulation, indicating that this treatment had a curative effect on the kittens.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cat; Swimmer; Congenital abnormalities.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300014

Soroprevalência de pseudorraiva, peste suína clássica e brucelose em suínos do estado do Piauí
Provedor de dados: 45
Autores: Braga,J.F.V.; Teixeira,M.P.F.; Franklin,F.L.A.A.; Souza,J.A.T.; Silva,S.M.M.S.; Guedes,R.M.C.
Este trabalho teve como objetivo determinar a soroprevalência de pseudorraiva, peste suína clássica (PSC) e brucelose suína em suínos do estado do Piauí, Brasil. Foram coletadas amostras sanguíneas de 384 suínos de criações intensivas e extensivas do estado. Anticorpos anti-Brucella spp. foram detectados pelo teste do antígeno acidificado tamponado e confirmados pelo teste 2-mercaptoetanol, enquanto a detecção de anticorpos contra os vírus da PSC e pseudorraiva foi realizada por ensaio imunoenzimático (ELISA), utilizando-se kits comerciais específicos. Anticorpos anti-Brucella spp. foram detectados em 1,04% (2/192) dos suínos de criações intensivas. Dos rebanhos avaliados, 0,78% (3/384) dos animais exibiram anticorpos contra o vírus da PSC, sendo 1,04%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Suídeos; Sorologia; Aujeszky; Pestivírus; Brucella spp.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500009

Hambúrgueres de aparas de jacaré-do-pantanal (Caiman yacare) submetidos a diferentes técnicas de defumação
Provedor de dados: 45
Autores: Fernandes,V.R.T.; Franco,M.L.R.S.; Gasparino,E.; Tanamati,A.; Coutinho,M.E.; Bielawski,K.
Avaliaram-se hambúrgueres de aparas de jacaré-do-pantanal (Caiman yacare) quanto à composição centesimal, cor e análise sensorial. O delineamento foi inteiramente ao acaso, em três tratamentos: T1= sem defumação; T2= defumação a quente e T3= defumação líquida, e nove repetições. As aparas foram moídas e condimentadas para o hambúrguer. Os hambúrgueres para defumação a quente foram colocados no defumador 60 min a 60ºC com gerador de fumaça por fricção. Foi pulverizada fumaça líquida, sobre os produtos (T3), e estes foram colocados em desidratador por 60 min a 60ºC. Houve diferença significativa quanto à composição centesimal entre os hambúrgueres defumados, T2 = 43,1% e T3 = 60,9%, e verificou-se menor teor de umidade em relação aos sem defumação, 73,3%. A...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hambúrguer; Defumação; Jacaré-do-pantanal.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300043

Suplementação de aminoácidos para redução da proteína bruta em dietas para leitões desmamados aos 21 dias de idade
Provedor de dados: 45
Autores: Girôtto Júnior,C.J.; Brustolini,P.C.; Silva,F.C.O.; Donzele,J.L.; Ferreira,A.S.; Nalon,P.M.; Campos,P.F.; Moutinho,J.V.
Avaliou-se o efeito da suplementação de aminoácidos industriais para redução de proteína bruta (PB) em dietas para leitões desmamados aos 21 dias de idade sobre o desempenho e sobre as variáveis morfofisiológicas, utilizando-se 126 leitões com peso inicial de 6,05±0,35kg. Os animais foram distribuídos em delineamento experimental de blocos ao acaso, com seis tratamentos (24,0; 23,0; 22,0; 21,0; 20,0; 19,0% de PB), sete repetições e três animais por unidade experimental. Não houve efeito significativo da redução de proteína bruta da dieta sobre o ganho de peso médio diário, o consumo de ração diário e a conversão alimentar, e o pH do estômago também não sofreu influência, mas houve diminuição do pH do duodeno. Os pesos relativos do baço e do fígado, a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aminoácidos essenciais; Desmame; Diarreia; Proteína ideal; Suíno.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400028

Serum bactericidal activity as indicator of innate immunity in pacu Piaractus mesopotamicus (Holmberg, 1887)
Provedor de dados: 45
Autores: Biller-Takahashi,J.D.; Takahashi,L.S.; Pilarski,F.; Sebastião,F.A.; Urbinati,E.C.
The immune system of teleost fish has mechanisms responsible for the defense against bacteria through protective proteins in several tissues. The protein action can be evaluated by serum bactericidal activity and this is an important tool to analyze the immune system. Pacu, Piaractus mesopotamicus, is one of the most important fish in national aquaculture. However there is a lack of studies on its immune responses. In order to standardize and assess the accuracy of the serum bactericidal activity assay, fish were briefly challenged with Aeromonas hydrophila and sampled one week after the challenge. The bacterial infection increased the concentration of protective proteins, resulting in a decrease of colony-forming unit values expressed as well as an...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fish innate immunology; Methodology; Humoral immunity.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600023

Desempenho de tilápias-do-nilo alimentadas com farelo da casca de pequi
Provedor de dados: 45
Autores: Pessoa,M.S.; Avelar,J.C.S.; Heliodoro Nascimento,A.L.; Silva,K.L.; Soares,A.C.M.; Camargo,A.C.S.; Faria Filho,D.E.
Avaliou-se o desempenho de tilápias-do-nilo alimentadas com farelo da casca de pequi (Caryocar brasiliense). Foram utilizados 200 alevinos, com idade de 37 dias e peso corporal médio de 0,63±0,25g, distribuídos em delineamento inteiramente ao acaso, com quatro tratamentos ­ zero, 20, 40 e 60% de substituição de ração comercial por farelo da casca de pequi ­ e cinco repetições representadas por caixas de cloreto de polivinila com capacidade para 130L, contendo 10 peixes cada, totalizando 20 unidades experimentais. As características de desempenho avaliadas foram consumo de ração, peso corporal, ganho de peso, conversão alimentar, comprimento total e viabilidade criatória. A conversão alimentar ­ 1,96µ; 2,21µ; 2,63µ; 3,12µ - piorou linearmente com a inclusão...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oreochromis niloticus; Caryocar brasiliense; Subproduto; Nutrição.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200034

Qualidade da carne de bovinos superprecoces terminados em confinamento
Provedor de dados: 45
Autores: Pitombo,R.S.; Souza,D.D.N.; Ramalho,R.O.S.; Figueiredo,A.B.A.; Rodrigues,V.C.; Freitas,D.D.G.C.; Ferreira,J.C.S.
Avaliou-se a qualidade da carne de 10 bovinos F1 Guzerá-Nelore e 10 F2 Pardo Suíço-Guzerá-Nelore, inteiros, e abatidos precocemente. Na avaliação da carne, foi utilizado o músculo Longissimus dorsi. O delineamento experimental foi o inteiramente ao acaso. Verificaram-se para F1 e F2, respectivamente, médias para umidade de 75,3 e 75,1, extrato etéreo de 1,4 e 1,5, proteína de 23,7 e 23,6 e cinzas de 1,04 e 1,06. Cor em L* de 28,9 e 30,3, médias para cor em a* de 22,6 e 23,4 e cor em b* de 15,3 15,4, força de cisalhamento de 3,4 e 3,5, perda de peso pelo descongelamento de 9,8 e 10,5 e perda pelo cozimento de 15,9 e 15,6. Não houve diferença estatística para nenhuma das variáveis analisadas entre os grupos genéticos.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cruzamentos; Extrato etéreo; Gado de corte; Longissimus dorsi; Qualidade da carne.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400036

Fracionamento de carboidratos e degradabilidade ruminal da cana-de-açúcar tratada com óxido de cálcio
Provedor de dados: 45
Autores: Romão,C.O.; Carvalho,G.G.P.; Leite,V.M.; Santos,A.S.; Chagas,D.M.T.; Ribeiro,O.L.; Pinto,L.F.B.; Oliveira,R.L.
Avaliaram-se o fracionamento de carboidratos e a degradabilidade in situ da matéria seca (MS) e da fibra em detergente neutro (FDN) da cana-de-açúcar tratada com óxido de cálcio (CaO). Foram testadas as porcentagens de 0; 0,75; 1,5; 2,25; 3,0; 3,75 e 4,5% de CaO, e o material testemunha (cana-de-açúcar in natura) para a avaliação do fracionamento de carboidratos, e as porcentagens de 0; 1,5; 3,0 e 4,5% de CaO para a avaliação da degradabilidade in situ da MS e da FDN. O CaO foi adicionado em pó na cana-de-açúcar, em porcentagem da matéria natural, por 24 horas. A porcentagem de inclusão de CaO na cana-de-açúcar proporcionou valores mais baixos para teores de carboidratos totais (CT) comparados aos valores da cana-de-açúcar in natura. Observou-se...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cal; Saccharum officinarum; Tratamento químico.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200033

Efeitos cardiorrespiratórios da metadona, pelas vias intramuscular e intravenosa, em cadelas submetidas à ovariossalpingo-histerectomia
Provedor de dados: 45
Autores: Pereira,D.A.; Marques,J.A.; Borges,P.A.; Batista,P.A.C.S.; Oliveira,C.A.; Nunes,N.; Lopes,P.C.F.
A metadona é um opioide pouco utilizado na medicina veterinária, e há, ainda, questionamentos quanto ao seu uso. Desse modo, comparou-se o emprego da metadona, administrada pelas vias IM e IV, e avaliaram-se seus efeitos sobre as características cardiorrespiratórias e os tempos de extubação e recuperação em cadelas submetidas à ovariossalpingo-histerectomia. Utilizaram-se 16 cadelas, pré-medicadas com levomepromazina, 0.6mg/kg, IM. Após 20 minutos, a indução anestésica foi feita com propofol, 5mg/kg, IV, e a manutenção com isoflurano. Transcorridos 10 minutos, os animais receberam metadona, 0.3mg/kg, pelas vias IM - grupo GIM - e IV - grupo GIV. As mensurações das frequências cardíaca (FC) e respiratória (FR), pressão arterial média (PAM), temperatura...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cadela; Anestesia; Analgesia; Metadona; Ovário-histerectomia.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400005

Avaliação nutricional da glicerina vegetal semipurificada para codornas de corte
Provedor de dados: 45
Autores: Batista,E.; Furlan,A.C.; Ton,A.P.S.; Pasquetti,T.J.; Quadros,T.C.O.; Grieser,D.O.; Zancanela,V.
Foram conduzidos três experimentos com o objetivo de determinar a composição química e os valores de energia metabolizável da glicerina vegetal semipurificada e verificar o desempenho e as características de carcaça de codornas de corte alimentadas com rações contendo níveis crescentes de glicerina. No experimento 1, foram utilizadas 50 codornas, alojadas em gaiolas de metabolismo. Os tratamentos consistiram de uma ração referência e de uma ração teste contendo nível de substituição de 10% de glicerina, com cinco repetições de cinco codornas por repetição. O valor de energia metabolizável aparente corrigida para balanço de nitrogênio da glicerina foi de 3.069kcal/kg. No experimento 2, foram utilizadas 640 codornas, distribuídas em um delineamento...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coturnix coturnix sp.; Digestibilidade; Viabilidade econômica.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600028

Estudo anatômico do plexo lombossacral de Tamandua tetradactyla
Provedor de dados: 45
Autores: Cardoso,J.R.; Souza,P.R.; Cruz,V.S.; Benetti,E.J.; Brito e Silva,M.S.; Moreira,P.C.; Cardoso,A.A.L.; Martins,A.K.; Abreu,T.; Simões,K.; Guimarães,F.R.
O tamanduá-mirim (Tamandua tetradactyla) é um xenartro da família Myrmecophagidae, encontrado da Venezuela ao sul do Brasil. Estudos apontam que essa é uma das espécies de animais selvagens mais vitimadas em número de atropelamentos, e, muitas vezes, o atendimento clínico adequado aos indivíduos feridos é dificultado pela carência de informações acerca dos mesmos. Visando contribuir com o conhecimento dessa espécie, este estudo teve como objetivo descrever seu plexo lombossacral. Para tanto, foram utilizados quatro cadáveres de Tamandua tetradactyla adultos e de ambos os sexos. O plexo lombossacral dessa espécie é formado pelos ramos ventrais dos nervos espinhais T18, L1, L2, L3, S1, S2, S3, S4, S5. Os nervos integrantes do plexo lombossacral do T....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tamanduá-mirim sistema nervoso inervação do membro pélvico; Xenarthra.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600020

Efeito da temperatura de descongelação na integridade de espermatozoides criopreservados de cães
Provedor de dados: 45
Autores: Moura,C.S.; Nunes,A.K.S.; Silva,B.S.; Peixoto,C.A.; Silva,A.R.; Silva,S.V.; Guerra,M.M.P.
Avaliou-se a influência da temperatura de descongelação na integridade de espermatozoides criopreservados de cães. Foram utilizados reprodutores das raças Basset Hound (n=3) e Rottweiler (n=3), submetidos a colheitas de sêmen por manipulação peniana. As amostras de sêmen foram descongeladas a 37ºC/1min (G1) ou 70ºC/6s (G2) e avaliadas quanto à motilidade progressiva, vigor e integridade do acrossoma após 0, 30 e 60 minutos de incubação (37ºC), e ultraestrutura espermática imediatamente após a descongelação. Em todos os tempos de incubação, a motilidade progressiva dos espermatozoides descongelados a 70ºC por 6s (74,6%) foi mais alta (P&lt;0,05) que a dos descongelados a 37ºC por 1min (64,6%). O vigor espermático não diferiu (P&amp;gt;0,05) entre os grupos,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Canino; Criopreservação; Danos espermáticos; Ultraestrutura.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400017

Características da carcaça e do corpo vazio de bovinos Charolês de diferentes categorias abatidos com similar grau de acabamento
Provedor de dados: 45
Autores: Pacheco,P.S.; Restle,J.; Missio,R.L.; Menezes,L.F.G.; Rosa,J.R.P.; Kuss,F.; Alves Filho,D.C.; Neiva,J.N.M.; Donicht,P.A.M.M.
Avaliaram-se as características de carcaça e do corpo vazio de novilhos (NO), novilhas (NA) e vacas de descarte (VA) Charolês n= 9, 10 e 10, respectivamente, terminados em confinamento e abatidos com similar grau de acabamento. O peso de abate e o peso de corpo vazio (PCVZ) foram similares entre NO, 480,2 e 417,4kg, e VA, 516,2 e 405,8kg, e maiores do que os das NA, 368,3 e 306,1kg. O rendimento de carcaça quente diferiu entre as categorias, sendo 57,2, 53,3 e 50,5%, respectivamente, para NO, NA e VA. Com o rendimento de carcaça quente expresso em relação ao PCVZ, as diferenças entre categorias diminuíram, sendo significativas apenas entre NO e NA. O conteúdo do trato digestivo das VA foi 34 e 45% maior que o dos NO e NA, respectivamente, sendo...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gado de corte; Espessura de gordura; Fêmea de descarte; Carcaça; Novilho jovem.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100040

Fração total de células mononucleares intra-articular em cães submetidos à reconstrução do ligamento cruzado
Provedor de dados: 45
Autores: Müller,D.C.M.; Pippi,N.L.; Basso,P.C.; Teixeira,L.V.; Sprada,A.G.; Graça,D.L.; Lopes,S.T.A.
Avaliou-sea ação da fração total de células mononucleares autógenas da medula óssea (FCMO) por aplicação intra-articular, após a correção cirúrgica do ligamento cruzado rompido. Foram utilizados 20 cães, os quais sofreram desmotomia do ligamento cruzado cranial e caudal unilaterais, 21 dias antes do reparo cirúrgico. Dez animais receberam as células autógenas no momento da correção. As avaliações se deram por estudo radiográfico, exames clínicos e biópsias aos 50 e 90 dias pós-operatórios. O grupo que recebeu a FCMO apresentou crescimento ósseo intra-articular ao estudo radiográfico, contudo os 20 animais apresentaram célulasCD34 positivas em suas amostras biopsiadas, indicando haver presença de células-tronco em ambos os grupos. Conclui-se que,para o...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cão; Células-tronco adultas; Articulação; Desmotomia.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200001

Electrocardiographic study in the American Quarter Horse breed
Provedor de dados: 45
Autores: Mantovani,M.M.; Tsuruta,S.A.; Muzzi,R.A.L.; Machado,T.; Pádua,M.F.S.; Coimbra,C.; Muzzi,L.A.L.; Jacomini,J.O.
An evaluation of the electrocardiographic profile of 50 clinically healthy Quarter Horses, with ages ranging from six months to 28 years old, 34 females and 16 males, was performed. Heart rate has not decreased with age, and duration of the QRS complex increased with the growth of the animal. The amplitude of the S and T1 waves were higher in male subjects than in female Quarter Horses.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arrhythmias; Equine; Electrocardiogram; Heart diseases; Cardiovascular function.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500017

Inseminação artificial em tempo fixo em primíparas Nelore lactantes acíclicas
Provedor de dados: 45
Autores: Cunha,R.R.; Fernandes,C.A.C.; Garcia,J.A.D.; Gioso,M.M.
Avaliou-se a eficiência de um protocolo de inseminação artificial em tempo fixo (IATF), para melhorar o desempenho reprodutivo de vacas Nelore primíparas, lactantes e acíclicas. Utilizaram-se 350 vacas com escore de condição corporal médio de 2,65±0,01 e média de dias pós-parto de 67,35±1,0 dias. A estação de monta (EM) foi de 180 dias. Os animais foram distribuídos em: G1(n=61) e G3(n=116) - vacas com presença de folículos ovarianos ≤8mm de diâmetro e sem corpo lúteo (CL); G2(n=57) e G4(n=116) - vacas com folículos ≥8mm e sem CL. As vacas do G1 e do G2 permaneceram em monta natural (MN) a partir do dia zero da EM. G3 e G4 foram tratados (dia zero) com 2mg de benzoato de estradiol (BE), IM, e dispositivo com 1,0g de P4 por oito dias. Retirou-se a P4,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bovinos de corte; Primíparas; IATF; Nelore; Eficiência reprodutiva.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400015

Manejo nutricional de cães e gatos domiciliados no estado do Espírito Santo - Brasil
Provedor de dados: 45
Autores: Aptekmann,K.P.; Mendes-Junior,A.F.; Suhett,W.G.; Guberman,U.C.
Obtiveram-se informações sobre o manejo nutricional adotado para cães e gatos domiciliados, avaliou-se o grau de conhecimento dos proprietários e correlacionaram-se esses dados com fatores socioeconômicos dos entrevistados. Um questionário foi respondido por 496 proprietários de cães e/ou gatos. Verificou-se que os proprietários reconhecem que a alimentação está diretamente relacionada com a saúde animal e se preocupam com a qualidade do alimento fornecido. A ração seca é considerada a melhor opção para a alimentação de cães e gatos e é o tipo de alimento mais utilizado pelos proprietários. Os cães são alimentados preferencialmente duas vezes ao dia, e os gatos recebem alimento à vontade. Os proprietários buscam informações sobre a alimentação dos animais...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cão; Gato; Enquete; Nutrição; Questionário.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200022

Atributos de qualidade da carne de paca (Agouti paca): perfil sensorial e força de cisalhamento
Provedor de dados: 45
Autores: Gomes,C.; Karam,L.B.; Macedo,R.E.F.
Avaliaram-se as características sensoriais e determinou-se a força de cisalhamento de cortes de carne de paca (Agouti paca). As análises foram realizadas nos cortes desossados de paleta, lombo e pernil de nove pacas, preparados por cocção até a temperatura interna de 70ºC. A avaliação de aspecto, cor, sabor, odor e maciez foi realizada pela aplicação de teste afetivo a 146 provadores, utilizando-se escala hedônica, e a força de cisalhamento foi determinada pela técnica Warner Bratzler. Na avaliação sensorial, os cortes de paleta, lombo e pernil de paca mostraram diferença significativa (p&lt;0,05) para os atributos de aspecto e cor. A paleta obteve pontuação mais baixa para o aspecto e mostrou coloração mais forte em relação aos demais cortes. Para a força...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animais silvestres; Aceitação sensorial; Maciez.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200036

Septicemia decorrente de pododermatites em canários de cor (Serinus canarius)
Provedor de dados: 45
Autores: Borsa,A.; Sanches,O.C.; Oliveira,G.R.
Relataram-se um surto de pododermatite e quadro septicêmico em aves de um canaril comercial. Quarenta e quatro canários de cor foram escolhidos de forma aleatória, sem distinção de sexo, idade ou cor, os quais vieram a óbito naturalmente, após terem sido afetados pela pododermatite, sem que tivessem se submetido a tratamento prévio. As aves mortas foram encaminhadas para o exame necroscópico, onde amostras de tecidos das áreas afetadas foram colhidas para exames microbiológico, micológico e histológico. Todas as aves necropsiadas apresentavam pododermatite, com inflamação em um ou mais dedos, de aspecto nodular, com ou sem presença de úlceras ou necrose. Staphylococcus aureus plasma coagulase positivo foi isolado dos pés e do fígado de todas as aves. Foi...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Septicemia; Canários de cor; Pododermatites; Antibióticos.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300024

Listeria monocytogenes, E. coli O157, Salmonella spp. e microrganismos indicadores em carcaças bovinas para exportação
Provedor de dados: 45
Autores: Matos,A.V.R.; Nunes,L.B.S.; Vianna,C.; Spina,T.L.B.; Zuim,C.V.; Possebon,F.S.; Xavier,D.M.; Ferraz,M.C.; Pinto,J.P.A.N.
Foram colhidas amostras de 100 carcaças em um frigorífico exportador, localizado no interior do estado de São Paulo, amostradas ao longo de um ano, por meio do método de esponjas, aplicado na região do peito do animal. As amostras foram colhidas em três pontos, denominados A, B e C, sendo cada carcaça amostrada nos três pontos, localizados nas etapas: pós-sangria (A); pós-esfola (B) e pós-lavagem (C). Foram realizadas pesquisas de Listeria sp., E. coli O157, Salmonella spp. e microrganismos indicadores (Petrifilms® AC, EC e EB). Não foram isolados Listeria ou E. coli O157 em nenhuma das 300 amostras. Salmonella spp. foi isolada em nove, sendo oito no ponto A e uma no ponto B. Para mesófilos, as contagens variaram de 0 a 6,8 log UFC/cm², para coliformes...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bovinos; Salmonella; E. coli; Listeria; Microrganismos indicadores.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400007

Potencial probiótico in vitro de bactérias ácido-láticas isoladas de queijo-de-minas artesanal da Serra da Canastra, MG
Provedor de dados: 45
Autores: Costa,H.H.S.; Souza,M.R.; Acúrcio,L.B.; Cunha,A.F.; Resende,M.F.S.; Nunes,Á.C.
O potencial probiótico in vitro de 12 amostras de bactérias ácido-láticas (11 Lactobacillus spp. e uma Weissella paramesenteroides), isoladas de queijo-de-minas artesanal da Serra da Canastra, foi investigado. Essas amostras foram caracterizadas in vitro quanto à susceptibilidade a antimicrobianos, antagonismo contra microrganismos de referência patogênicos e não patogênicos e sensibilidade a pH gástrico e sais biliares. Apenas L. rhamnosus B4, W. paramesenteroides C10 e L. rhamnosus D1 apresentaram resistência a menor número de antimicrobianos (ceftazidima, oxacilina, estreptomicina e vancomicina). Todas as amostras apresentaram atividade antagonista frente a todas as bactérias patogênicas testadas e não inibiram as bactérias não patogênicas. Todas as...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Queijo-de-minas artesanal; Bactéria ácido-lática; Potencial probiótico.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600038

Potencial antiviral da quercetina sobre o parvovírus canino
Provedor de dados: 45
Autores: Carvalho,O.V.; Oliveira,F.S.; Saraiva,G.L.; Botelho,C.V.; Ferreira,H.C.C.; Santos,M.R.; Silva Júnior,A.; Almeida,M.R.
Avaliou-se o efeito do flavonoide quercetina na replicação do parvovírus canino in vitro por meio do ensaio de determinação da atividade virucida (ensaio 1), ensaio de determinação da atividade sobre a célula (ensaio 2) e ensaio de tempo de adição das drogas em diferentes etapas do ciclo replicativo viral (ensaio 3). A quercetina apresentou significante atividade antiviral, com valores máximos de redução do título viral de 96,3% no ensaio 1, 90% no ensaio 2 e 90% no ensaio 3. Os efeitos mais expressivos ocorreram nas etapas de adsorção e penetração viral. Os resultados deste trabalho sugerem a importância da quercetina para a medicina veterinária.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cão; Parvovírus; Quercetina; Antiviral.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200008

Qualidade seminal, morfologia dos testículos e epidídimos de touros submetidos à dieta contendo gossipol
Provedor de dados: 45
Autores: Santos,M.D.; Rodrigues,R.S.; Freitas,S.H.; Costa,D.S.; Ruas,J.R.M.; Miranda,E.J.; Simões,M.J.
Objetivou-se avaliar o efeito da ingestão de gossipol livre sobre a qualidade espermática e a morfologia dos testículos e dos epidídimos de touros da raça Nelore. Doze touros receberam dieta contendo 3,3g de gossipol livre/touro/dia (caroço de algodão) (Grupo 1, n=6) e dieta isenta de gossipol (Grupo 2, n=6), respectivamente. Foram realizadas coletas de sêmen no início e no final do experimento, que teve duração de 73 dias. Ao final do estudo, foram retirados os testículos e os epidídimos dos touros para se estudar o efeito do gossipol livre sobre as características histológicas. O consumo médio de 3,3g de gossipol livre/touro/dia (média 7,1mg de gossipol livre/kg/dia) reduziu a motilidade e a concentração espermática e aumentou a porcentagem de defeitos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Caroço de algodão; Histomorfometria; Qualidade espermática.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400006

Inclusion of Yucca schidigera and zeolite in dog feed: influence on mineral excretion
Provedor de dados: 45
Autores: Santos,J.P.F.; Saad,F.M.O.B.; Maia,G.V.C.; Pires,C.P.; Reis,J.S.; Roque,N.C.; Aquino,A.A.; Brunetto,M.A.
This study aimed to evaluate the effects of adding Yucca schidigera and zeolite (Clinoptilolite) to feed (super premium and standard) for adult dogs on the apparent indigestibility coefficient of minerals. In the first assessment, 21 dogs were used, with average weight of 12.5kg±1.46 in seven treatments in two periods (super premium diet referred to as control and control with the addition of 125, 250, 375ppm Yucca schidigera and 0.5%, 0.75% and 1.0% zeolite). The second assessment was conducted with standard feed, using 21 experimental plots distributed in three treatments (standard diet referred to as control and control with the addition of 375ppm of Yucca schidigera and 1.0% zeolite). The additives did not affect the acceptability of feed and fecal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Adsorption; Pets; Clinoptilolite.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300042

Parâmetros ósseos de frangos de corte alimentados com rações contendo fitase e baixos níveis de fósforo disponível e proteína bruta
Provedor de dados: 45
Autores: Vaz,A.C.N.; Albuquerque,R.; Brisola,M.L.; Donato,D.C.Z.; Garcia,P.D.S.R.
Foram utilizados 504 pintos de linhagem comercial (Ag Ross 308) para frangos de corte de um dia de idade, distribuídos em 12 tratamentos com seis repetições. O delineamento experimental utilizado foi de blocos ao acaso em esquema fatorial 2x2x3, com dois níveis de fósforo disponível (0,45 e 0,34%), dois níveis de fitase (0 e 1200 FTU/kg) e três níveis de proteína bruta (22,5; 20,5 e 18,5%). A porcentagem de cálcio e fósforo nas tíbias foi influenciada significativamente pelos níveis de proteína e de fósforo na dieta com o uso da fitase. Os teores de matéria mineral nas tíbias apresentaram efeito linear com o uso da enzima e efeito quadrático com a ausência dela, apresentando maior valor com o nível de 22,5% de proteína na dieta. Já com os maiores níveis de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avicultura; Cálcio; Enzima; Matéria mineral; Tíbia.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600034

Estudo clínico e histológico das pálpebras e conjuntiva hígidas submetidas ao tratamento tópico com soluções anestésicas em coelhos
Provedor de dados: 45
Autores: Amaral,A.V.C.; Chaves,N.S.T.; Silva,L.A.F.; Fleury,L.F.F.; Menezes,L.B.; Lima,F.G.; Lima,A.M.V.
Avaliaram-se as apresentações comerciais de colírios anestésicos aplicados em 63 coelhos da raça Nova Zelândia, distribuídos em três grupos (G1, G2 e G3) de 21 animais cada e que receberam instilação de uma gota em cada olho seis vezes ao dia. Os animais do G1 foram tratados com colírio de cloridrato de proparacaína a 0,5%; os do G2, com colírio de cloridrato de tetracaína a 1% associado à fenilefrina a 0,1%; e os do G3, com solução fisiológica. Cada grupo foi subdividido em três subgrupos com sete animais cada, os quais foram tratados por três, sete e 15 dias. No final de cada tratamento, dois animais de cada subgrupo foram sacrificados para exame histológico de fragmentos retirados da conjuntiva, da terceira pálpebra e das pálpebras. Observou-se, ao...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coelho; Colírio; Tetracaína; Proparacaína; Blefarite.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100011

Effect of sorghum tannins in sheep fed with high-concentrate diets
Provedor de dados: 45
Autores: Cabral Filho,S.L.S.; Abdalla,A.L.; Bueno,I.C.S.; Gobbo,S.P.; Oliveira,A.A.M.
The aim of this study was to evaluate the nutritional value of three sorghum cultivars with different concentrations of condensed tannins in sheep diets. Six adult sheep (LW=56kg) with rumen and duodenal fistulas were assigned to experimental groups using two 3x3 Latin Square designs. The diets were formulated using three sorghum cultivars: LTC (low-tannin cultivar), MTC (medium-tannin cultivar) and HTC (high-tannin cultivar). Microbial nitrogen (MN) concentration in the duodenum was measured using a 15N trace technique. LTC, MTC and HTC diets presented values of 788, 722 and 747 (SE=20.6) g kg-1 for dry matter digestibility and 633, 535 and 530 (SE=35.8) g/kg for crude protein digestibility. The LTC diet was significantly different from the other diets...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feed evaluation; Microbial protein; Nitrogen balance; Rumen.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600025

Primary intraocular chondrosarcoma in a dog
Provedor de dados: 45
Autores: Perlmann,E.; Morales,A.; Góes,A.C.A.; Dagli,M.L.Z.; Barros,P.S.M.
A five-year-old male Cocker Spaniel was presented for evaluation of the right eye due to discomfort, abundant purulent discharge and progressive enlargement of the eyeball. The owner revealed that the right eye has appeared to be inflamed and smaller then the left eye for years. Ophthalmic examination revealed corneal perforation, buphthalmia and conjuctival hyperemia. Enucleating was performed due to signs of endophthalmitis and ocular discomfort. Histopathology revealed a multilobulated proliferation of chondrocytes producing hyaline cartilage with occasional pleomorphism and binucleate cells. A diagnosis of primary intraocular chondrosarcoma was done.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chondrosarcoma; Dog; Intraocular neoplasia.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600011

Aproveitamento de soro lácteo na formulação de bebidas com frutas e hortaliças
Provedor de dados: 45
Autores: Guedes,A.F.L.M.; Machado,E.C.L.; Fonseca,M.C.; Andrade,S.A.C.; Stamford,T.L.M.
O uso do soro lácteo como complemento na formulação de alimentos visando ao seu aproveitamento é uma alternativa para a obtenção de novos produtos. Neste trabalho, desenvolveram-se bebidas à base de soro oriundo de queijo coalho tipo A com frutas e hortaliças. Na formulação das bebidas, utilizaram-se diferentes proporções entre soro lácteo, frutas e hortaliças, com adição de 10% de açúcar. Seis bebidas foram formuladas e submetidas a um teste de preferência, e as três primeiras colocadas foram submetidas a um teste de aceitação sensorial. As três preferidas foram as bebidas sabor graviola, morango e goiaba. A bebida sabor graviola obteve aceitação com as melhores notas nos atributos sensoriais cor, sabor, aparência e qualidade global, seguida pela...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soro de queijo coalho; Graviola; Hortelã; Cenoura.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400040

Fratura de fíbula e lesões de ligamento colateral e menisco lateral em muar: relato de caso
Provedor de dados: 45
Autores: Silveira,C.O.; Fonseca,B.P.A.; Donner,A.C.; Baptista Filho,L.C.F.; Meneses,R.M.
Relata-se a ocorrência de fratura de fíbula e lesões de ligamento colateral e menisco lateral em um muar, fêmea, de dois anos de idade, provavelmente produzida por um coice na região da articulação femorotibiopatelar do membro pélvico esquerdo. O animal apresentava claudicação de grau 5 desse membro e obteve melhora após bloqueio dos nervos fibular, tibial e safena e da articulação afetada. O exame radiográfico da região acometida revelou fratura do terço proximal da fíbula e, ao exame ultrassonográfico, observaram-se pontos anecoicos no ligamento colateral lateral e menisco.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Equídeo; Trauma; Claudicação; Articulação femorotibiopatelar.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100022

Efeito do extrato aquoso e etanólico do angico preto sobre larvas de Rhipicephalus (Boophilus) microplus
Provedor de dados: 45
Autores: Silva Filho,M.L.; Silva,L.B.; Fernandes,R.M.; Lopes,G.S.
Rhipicephalus (Boophilus) microplus representa um grande problema na bovinocultura e o uso de acaricidas é a medida de controle profilático e terapêutico mais comum contra esses ectoparasitos. Os principais problemas relacionados com essa prática dizem respeito ao desenvolvimento de linhagens resistentes de carrapatos. Assim, objetivou-se determinar o efeito de extratos da casca de Anadenanthera macrocarpa sobre as larvas de R. (B.) microplus, obtidas de um pool de ovos, acondicionadas em tubo de polietileno. De acordo com os resultados, o extrato aquoso na concentração de 8,26mg.mL-1 causou 85% de mortalidade nas primeiras 12 horas. Quanto ao extrato etanólico, observou-se maior mortalidade nas concentrações 12,5; 6,25 e 1,56mg.mL-1, em torno de 84%,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acaricida botânico; Carrapaticida; Ectoparasitas; Angico vermelho.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300003

Leiomioma ovariano, tumor de células da granulosa e ovário policístico em cadela: uma rara associação
Provedor de dados: 45
Autores: Boeloni,J.N.; Silva,J.F.; Nascimento,E.F.; Serakides,R.; Ocarino,N.M.
This case describes a rare case of ovarian leiomyoma associated with granulosa cell tumor and polycystic ovary and in a fifteen-year-old mongrel female dog.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Neoplasia; Ovário; Músculo liso; Cadela.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500041

Perímetro escrotal e características seminais de touros da raça Nelore selecionados para precocidade sexual
Provedor de dados: 45
Autores: Lima,F.P.C.; Xavier,P.R.; Bergmann,J.A.G.; Marques  Júnior,A.P.
Vinte e quatro touros jovens da raça Nelore foram distribuídos em grupo 1 (G1, à puberdade) e grupo 2 (G2, pós-puberdade), segundo a concentração seminal e motilidade progressiva dos espermatozoides. Características de produção, seminais e endócrinas foram avaliadas à puberdade e pós-puberdade, aos 12, 14, 16 e 18 meses de idade. A média de idade, de peso e de perímetro escrotal à puberdade foram, respectivamente, de 15,37±1,58 meses, 391,35±55,64 kg e 26,41±2,35cm, e na pós-puberdade foram, respectivamente, de 17,49±1,73 meses; 451,75±35,44kg e 29,93±2,59cm. As características seminais na pós-puberdade aumentaram em relação à puberdade. Pode-se inferir que os tourinhos da raça Nelore submetidos a um programa de seleção para precocidade sexual manifestaram...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Touro; Nelore; Puberdade; Sêmen.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600003

Adição de plasma seminal ao sêmen descongelado e taxa de prenhez de ovelhas inseminadas em tempo fixo
Provedor de dados: 45
Autores: Prado,O.R.; Bastos,G.M.; Monteiro,A.L.G.; Saab,B.B.; Gilaverte,S.; Pierobom,C.C.; Hentz,F.; Martins,L.H.S.; Silva,C.J.A.; Dranca,G.S.; Stivari,T.S.S.; Cerqueira,G.
Avaliou-se o efeito da adição de plasma seminal ovino ao sêmen descongelado sobre a taxa de prenhez de ovelhas em rebanho comercial. Cento e setenta e quatro ovelhas cruza Texel foram distribuídas em quatro tratamentos: T1) inseminação artificial cervical (IAC) com sêmen descongelado (SD) diluído em solução tampão fosfato salino (PBS); T2) IAC com SD e adição de plasma seminal ovino; T3) grupo-controle I: IAC com sêmen fresco diluído em PBS; T4) grupo-controle II: inseminação artificial por laparoscopia com SD diluído em PBS. Para indução de cio, utilizaram-se esponjas impregnadas com acetato de medroxiprogesterona (MAP) por 12 dias, com aplicação intramuscular de 400 UI de eCG (Novormon®) e de 37,5µg de cloprostenol sódico (Sincrocio®), no dia da retirada...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ovelha; Inseminação cervical; Laparoscopia.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100003

Lesão iatrogênica meningomedular em um cão submetido à espondilectomia ventral para tratamento de extrusão crônica de disco intervertebral cervical
Provedor de dados: 45
Autores: Araújo,B.M.; Figueiredo,M.L.; Silva,A.C.; Fernandes,T.H.T.; Bonelli,M.A.; Tudury,E.A.
Objetivou-se descrever a ocorrência de lesão iatrogênica meningomedular em um cão da raça Dachshund, macho, oito anos de idade, apresentando tetraparesia flácida há dois meses, que foi submetido à espondilectomia ventral para tratamento de extrusão crônica de disco intervertebral cervical. Durante remoção do material de disco herniado com removedores de tártaro e pinça hemostática, observou-se severa hemorragia dos seios venosos, descolamento meníngeo com laceração medular e imediata queda dos parâmetros cardiovasculorrespiratório, com evolução para a morte ante a ausência de respostas às medidas de ressuscitação cardiopulmonar.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cão; Doença do disco intervertebral; Região cervical.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300005

Confiabilidade e pontuação mínima relacionada à intervenção analgésica de uma escala multidimensional para avaliação de dor pós-operatória em gatos
Provedor de dados: 45
Autores: Brondani,J.T.; Luna,S.P.L.; Minto,B.W.; Santos,B.P.R.; Beier,S.L.; Matsubara,L.M.; Padovani,C.R.
Avaliou-se a confiabilidade e determinou-se a pontuação mínima relacionada à necessidade de intervenção analgésica de uma escala multidimensional para avaliação de dor pós-operatória em gatas submetidas à ovário-histerectomia. Trinta gatas foram filmadas em quatro momentos predeterminados: pré-operatório, pós-operatório antes e depois da analgesia de resgate e às 24 horas após a cirurgia. Quatro observadores, não cientes dos momentos de avaliação, e um observador, considerado padrão-ouro - pesquisador que desenvolveu a escala - , avaliaram os vídeos em ordem aleatória, a partir da aplicação da escala, e determinaram a suficiência ou não de analgesia, baseando-se na experiência clínica. Os vídeos foram reavaliados dois meses após a primeira análise. O grau...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gatos; Dor; Escalas; Confiabilidade; Intervenção analgésica.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100024

Modified cementless total coxofemoral prosthesis: development, implantation and clinical evaluation
Provedor de dados: 45
Autores: Arias,S.A.; Blanco,J.R.T.; Doretto,J.V.; Vieira,G.L.T.; Oliveira,H.P.; Rezende,C.M.F.
The aim of this study was to modify canine coxofemoral prostheses and the clinical evaluation of the implantation. Fifteen canine hips and femora of cadavers were used in order to study the surface points of modification in prostheses and develop a perforation guide. Femoral stems and acetabular components were perforated and coated with biphasic calcium phosphate layer. Twelve young adult male mongrel dogs were implanted with coxofemoral prostheses. Six were operated upon and implanted with cemented canine modular hip prostheses, establishing the control group. The remaining six were implanted with a novel design of cementless porous tricalcic phosphate-hydroxyapatite coated hip prostheses. Clinical and orthopedic performance, complications, and thigh...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coxofemoral prosthesis; Calcium phosphate; Hydroxyapatite; Dogs.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600012

Desempenho produtivo e econômico do confinamento de bovinos zebuínos alimentados com três dietas de alto concentrado
Provedor de dados: 45
Autores: Mandarino,R.A.; Barbosa,F.A.; Cabral Filho,S.L.S.; Lobo,C.F.; Silva,I.S.; Oliveira,R.V.; Diogo,J.M.S.; Guimarães Júnior,R.
Estudaram-se o desempenho produtivo e a viabilidade econômica no confinamento de 24 bovinos, inteiros, com idade média de 23 meses, sendo 12 Nelore (NEL) e 12 F1 Nelore x Brahman (NBR), divididos em três dietas: SIL - silagem de milho e ração concentrada; PEL - exclusiva de pellets; GRN - milho grão inteiro e pellets. O experimento foi realizado em um delineamento inteiramente ao acaso, em esquema fatorial 2x3, com quatro repetições. Os animais NBR apresentaram resultados semelhantes aos da raça NEL quanto aos desempenhos alimentar e econômico, para todas as variáveis analisadas durante o confinamento. Entre as três dietas, a dieta PEL, apesar de não ser a de maior custo em R$/kg, obteve o menor desempenho, com maior COT/kg, menor RT e menores margens...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brahman; Custos; Nelore; Grão inteiro.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500027

Consumo e desempenho de ovinos alimentados com silagens de cana-de-açúcar tratadas com óxido de cálcio e cloreto de sódio
Provedor de dados: 45
Autores: Rabelo,F.H.S.; Rezende,A.V.; Rabelo,C.H.S.; Nogueira,D.A.; Silva,W.A.; Vieira,P.F.; Santos,W.B.
Avaliaram-se o consumo e o desempenho de ovinos alimentados com silagens de cana-de-açúcar tratadas com óxido de cálcio (CaO) e cloreto de sódio (NaCl). Utilizaram-se sete tratamentos: controle (silagem sem aditivo), silagens com 0,5; 1,0 e 1,5% de CaO e silagens com 0,5; 1,0 e 2,0% de NaCl, com quatro repetições. Os animais consumiram maior quantidade de matéria seca e de nutrientes digestíveis totais quando se adicionou 0,5% de NaCl ou ainda 1,0 e 1,5% de CaO. Quanto à fibra em detergente neutro e à proteína bruta, observou-se maior consumo quando se adicionou 0,5% de NaCl ou 1,0% de CaO. Não foi observado efeito da dieta sobre o ganho médio diário de peso. A adição de 0,5% de cloreto de sódio e 1,0% de óxido de cálcio à silagem de cana-de-açúcar...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ovino; Aditivo químico; Nutrição; Saccharum officinarum.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400031

Efeitos da forma física da ração e da linhagem de frangos de corte sobre a digestibilidade dos nutrientes e determinação de energia líquida
Provedor de dados: 45
Autores: Lara,L.J.C.; Campos,W.E.; Baião,N.C.; Lana,A.M.Q.; Cançado,S.V.; Rocha,J.S.R.; Pompeu,M.A.; Barbosa,V.M.
Para avaliar os efeitos da forma física da ração, do consumo de ração controlado e das linhagens sobre a digestibilidade dos nutrientes, os valores de energia das rações e a produção de calor pelas aves, foram utilizados 210 pintos machos da linhagem Cobb® e 210 pintos machos da linhagem Ross-308®. Os tratamentos foram definidos pela forma física da ração, pelo consumo de ração controlado e pela linhagem, da seguinte forma: ração farelada à vontade, ração peletizada à vontade e ração peletizada controlada com consumo igual ao da ração farelada. O delineamento experimental foi o de blocos ao acaso, em arranjo fatorial 3x2 (três rações e duas linhagens), com quatro repetições (períodos), sendo o período considerado como bloco. A digestibilidade da matéria...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Frango de corte; Linhagem; Peletização; Digestibilidade; Produção de calor.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600037

Avaliação de modelos de predição da energia metabolizável do milho para suínos
Provedor de dados: 45
Autores: Pelizzeri,R.N.; Pozza,P.C.; Oliveira,N.T.E.; Somensi,M.L.; Furlan,A.C.; Neumann,M.E.
Os objetivos propostos no presente trabalho foram a validação da predição de modelos de regressão linear de 1º grau, dos valores estimados de energia metabolizável (EM) em função dos valores observados de EM do milho, obtidos em ensaios biológicos com suínos. Setenta e quatro registros de composição química e energética do milho foram obtidos na literatura e utilizados para estimar a EM de 41 modelos de predição em função da composição química. A significância dos parâmetros (β0 e β1) da regressão foi avaliada pelo teste t parcial, e a validação da predição dos modelos de 1º grau foi obtida pela aceitação da hipótese de nulidade conjunta β0=0 e β1=1. Os modelos EM7 = 1,099 + 0,740EB - 5,5MM - 3,7FDN; EM9 = 16,13 - 9,5FDN + 16EE + 23PB*FDN - 138MM*FDN e...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Composição química; Equações lineares; Milho; Validação.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200023

Clinical and histological effects of the temporary occlusion of the rabbit nasolacrimal duct and point using cyanoacrylate adhesives
Provedor de dados: 45
Autores: Cardoso,K.C.F.; Ferreira,M.A.; Miguel,M.P.; Bolzan,A.A.; Nishimori,C.T.D.; Franco,L.G.; Honsho,C.S.
The objective of this study was to evaluate the clinical and histological effects of occluding the nasolacrimal ducts and points of rabbits. For this study, 20 adult New Zealand rabbits, both males and females, weighing 3.2±0.4kg were allocated into two groups for n-butyl-cyanoacrylate occlusion (GB, n=10) or 2-octyl-cyanoacrylate occlusion (GO, n=10). The contralateral eyes served as the controls. The persistence of tears was evaluated daily using the Schirmer I test. Discomfort, eye discharge, epiphora, and conjunctival hyperemia were assessed prior to the procedure (T0) and during the 14 subsequent days (T1-T14). On days seven and 14, five animals from each group were euthanized, and their nasolacrimal ducts were collected, processed and analyzed by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dry eye; Keratoconjunctivitis sicca; Schirmer test; Tear.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600021

Adequação da contagem de células somáticas e da contagem bacteriana total em leite cru refrigerado aos parâmetros da legislação
Provedor de dados: 45
Autores: Bozo,G.A.; Alegro,L.C.A.; Silva,L.C.; Santana,E.H.W.; Okano,W.; Silva,L.C.C.
O objetivo deste trabalho foi adequar a qualidade do leite cru refrigerado de cinco propriedades leiteiras aos parâmetros microbiológicos e de contagem de células somáticas (CCS) estabelecidos pela legislação estadual do Paraná. As propriedades leiteiras estudadas foram monitoradas durante sete meses após a implantação de boas práticas de ordenha e de recomendações quanto ao tratamento de mastites e à manutenção e higienização de equipamentos de ordenha. Antes da adoção das recomendações, a contagem bacteriana total (CBT) média era de 1,36 x 10(6)UFC/mL e a CCS média, de 1,87 x 10(6)/mL. Todas as propriedades atingiram os padrões estabelecidos para CBT, com redução média de 93,4%. A redução de CCS foi, em média, 74,3%. Apenas três propriedades atingiram os...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Leite; Qualidade; Manejo de ordenha; Equipamento.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200040

Atividade folicular ovariana em avestruz (Struthio camelus) avaliada por ultrassonografia e sua relação com fotoperíodo e postura
Provedor de dados: 45
Autores: Pezoa Poblete,P.C.; Moustacas,V.S.; Oliveira,C.H.; Xavier,P.R.; Lanna,L.L.; Marques Júnior,A.P.
The objective of the experiment was to verify, through ultrasonography, the follicular activity of ostriches in different seasons of the year, correlating them with photoperiod, number of rainy days in each month and egg laying. Eight females were evaluated monthly, during 12 consecutive months in an ostrich farm located in the Center-West of Minas Gerais, Brazil. It was found that the time of the year for egg laying lasts for eight months, from June to January. The egg laying was positively correlated (r = 0.48; P&lt;0.01) with photoperiod. However, there was no correlation between the egg laying and the follicular activity with the amount of rain. Considering the technique adopted, the right antimere offered better ultrasonographic access. The method was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avestruz; Sazonalidade; Reprodução; Ultrassonografia.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500040

Ações de vigilância para influenza aviária desenvolvida no Brasil, no período de 2004 e 2007
Provedor de dados: 45
Autores: Mota,M.A.; Lima,F.S.; Oliveira,P.F.N.; Guimarães,M.P.
No início dos anos 2000, o Brasil se consolidou como maior exportador mundial de carne de frango, mesmo período em que se observou a emergência global de focos de HPAI. Para assegurar a qualidade sanitária do produto avícola nacional, o Mapa organizou um programa oficial de vigilância para o vírus de IA. Na primeira fase, foram coletados 106.226 soros e 7.017 pools de suabes traqueais e cloacais, provenientes de granjas avícolas de produção comercial intensiva de frangos de corte, no período entre janeiro de 2004 e março de 2005. Não se obteve isolamento viral para IA, porém foi identificado um conglomerado epidemiológico de 24 municípios, delineado pela interpolação de dados relacionados às localizações geográficas, e os resultados sorológicos das...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avicultura; Influenza aviária; Estratégias de controle; Brasil.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500001

Quantitative computed tomography of the liver in dogs submitted to prednisone therapy
Provedor de dados: 45
Autores: Costa,L.A.V.S.; Oliveira,D.C.; Lopes,B.F.; Lanis,A.B.; Teixeira,M.W.; Costa,F.S.
The aim of this study is to evaluate the possible alterations in radiodensity of the hepatic parenchyma and spleen resulting from the corticotherapy with prednisone, correlating these findings with serum biochemical hepatic transaminase activity. A clinical trial was performed on eight healthy dogs with the intent of evaluating possible hepatic alterations after prednisone therapy using quantitative computed tomography. All animals received prednisone orally at a dose of 2mg/kg of weight for 30 days. The radiodensity of the liver and spleen was determined before and after the period that the medication was administered. An increase in the radiodensity of the hepatic parenchyma between the initial and final experimental stages was observed. In the present...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dog; Computed tomography; Glycogenosis; Radiodensity; Glucocorticoid.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400020

Hydrallantois in a female dog: a case report
Provedor de dados: 45
Autores: Feliciano,M.A.R.; Cardilli,D.J.; Crivelaro,R.M.; Garrido,E.; Silva,M.A.M.; Castanheira,T.L.L.; Vicente,W.R.R.
The aim of this study was to describe the clinical, ultrasound and histological findings of hydrallantois in a Pug bitch. On the 56th day of pregnancy the patient presented pronounced abdominal distention, lethargy, anorexia and dyspnea. The ultrasound revealed the presence of abnormal fluid accumulation within the fetal membranes, especial in the allantois, which was incompatible with the 8th week of pregnancy in bitches. The macroscopic exam during the C-section, distention of the fetal membranes and accumulation of fluid within the allantois was observed. The precise amount of liquid could not be assessed due to the surgical procedure. All neonates of our case report were normal at the initial physical exam. The histologic exam revealed normal placenta....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Female dog; Hydrallantois.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400021

Espinha bífida aberta em bovino: primeiro relato no estado de Minas Gerais
Provedor de dados: 45
Autores: Nicácio,M.A.C.; Carvalho,G.D.; Serrano,M.T.L.; Lang,A.; Santana,M.L.
Relatou-se um caso de espinha bífida aberta em uma bezerra de seis dias de idade que apresentava decúbito lateral permanente, pescoço em posição de opistótono, membros torácicos estendidos, impotência funcional dos membros pélvicos e fístulação na região lombar. Todos os achados clínicos, radiográficos e necroscópicos, descritos neste trabalho, são compatíveis com um quadro de espinha bífida aberta, sendo este o primeiro relato no estado de Minas Gerais.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alteração congênita; Bovino; Espinha bífida.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200006

Desempenho de vacas Girolando mantidas em pastejo de Tifton 85 irrigado ou sequeiro
Provedor de dados: 45
Autores: Teixeira,A.M.; Jayme,D.G.; Sene,G.A.; Fernandes,L.O.; Barreto,A.C.; Rodrigues Júnior,D.J.; Coutinho,A.C.; Glória,J.R.
Objetivou-se com este trabalho avaliar a taxa de lotação e a produção de leite de vacas mestiças Holandês x Zebu em pastagens de Tifton 85 irrigadas e em sequeiro, em Uberaba-MG. Os dados foram analisados em um delineamento de blocos inteiramente ao acaso, com três repetições por tratamento, num esquema fatorial 2x10 (dois tratamentos e 10 épocas). Foi utilizado um lote de 11 vacas em lactação por tratamento para avaliação do desempenho animal. As médias foram comparadas por meio do teste de Scott-Knott ao nível de 5% de probabilidade (P&lt;0,05). A pastagem foi manejada em sistema de pastejo rotacionado com três e cinco dias de ocupação e 21 e 35 dias de descanso no período das águas e da seca, respectivamente. A taxa de lotação média do sistema irrigado,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cynodon; Irrigação; Manejo; Produção de leite.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500025

Período de permanência de espermatozoides em glândulas hospedeiras de espermatozoides e glândulas infundibulares em codorna de corte
Provedor de dados: 45
Autores: Miranda,J.L.P.S.; Xavier,P.R.; Mahecha,G.A.B.; Marques Júnior,A.P.
Para determinar o tempo de permanência de espermatozoides nas glândulas hospedeiras de espermatozoides (GHEs) e nas glândulas infundibulares (GIs) de codorna de corte (Coturnix coturnix coturnix), foram utilizados 12 machos e 66 fêmeas, totalizando 78 codornas em fase reprodutiva. As fêmeas foram distribuídas em 11 grupos e acasaladas por 24 horas em gaiolas individuais. Os machos, utilizados de modo intercalado, foram separados do contato com as fêmeas e colocados em descanso. As aves do grupo-controle (G0 - seis fêmeas) foram abatidas no início do experimento, enquanto as 60 fêmeas acasaladas foram distribuídas em 10 grupos (G1 a G10, com seis fêmeas cada) e abatidas a cada período de 24 horas, de forma sequencial. Fragmentos foram obtidos da região...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Codorna europeia; Glândulas hospedeiras de espermatozoides; Morfometria.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100004

Use of enzymes in diets with different percentages of added fat for broilers
Provedor de dados: 45
Autores: Costa,F.G.P.; Morais,S.A.N.; Lima,M.R.; Souza,R.B.; Santos,T.T.; Gomes,G.A.; Pinheiro,S.G.
We assessed the extent to which the removal of fat source, and consequently its compounds, such as linoleic acid, can affect the performance of broilers. We used 600 male Cobb 500 day old chicks. The birds were distributed in a completely randomized experimental design, with five treatments and six replicates of 20 birds each. The treatments were: (T1) diet - positive control (PC), which met the nutritional needs; (T2) diet - negative control (CN), a reduction of 100kcal/kg and low linoleic acid content; (T3): diet - negative control reformulated for low linoleic acid content and a set of Quantum phytase XT and Econase XT 25 (BAL + QFit-Eco), (T4): diet - negative control reformulated, with the percentage of linoleic acid adjusted to an intermediate value...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Linoleic acid; Meat quality; Performance.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300039

Avaliação da qualidade microbiológica de bebida láctea e creme de leite UAT por ATP-Bioluminescência
Provedor de dados: 45
Autores: Cunha,A.F.; Lage,A.D.; Pereira e Araújo,M.M.; Santos,R.D.P.; Resende,G.M.; Cerqueira,M.M.O.P.
Embora métodos tradicionais sejam utilizados na avaliação microbiológica de produtos UAT, metodologias rápidas, baseadas em ATP-Bioluminescência, têm sido desenvolvidas. Os resultados da aplicação dessa técnica em 54 amostras de bebida láctea UAT achocolatada e 12 de creme de leite UAT foram comparados com os resultados de métodos microbiológicos, utilizando-se diferentes meios de cultura e tempos de incubação das referidas amostras. A técnica de ATP-Bioluminescência foi aplicada por meio do sistema MLS, e os resultados foram expressos em unidades relativas de luz (RLU). Em todos os tempos de incubação - 48, 72 e 168 horas - , as amostras apresentaram contagens baixas de microrganismos mesófilos e psicrotróficos aeróbios quando analisadas em meio PCA, BHI,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: UAT; ATP-Bioluminescência; PetrifilmTM AC; PCA; BHI.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200041

Canine perineal hypospadias
Provedor de dados: 45
Autores: Guimarães,L.D.; Bourguignon,E.; Santos,L.C.; Duarte,T.S.; Andrade,E.C.; Borges,A.P.B.
Canine hypospadias is a rare condition that can occur in male and female dogs. Affected animals may present signs of urinary incontinence, recurrent urinary tract infections, periurethral dermatitis or can remain asymptomatic. Periurethral hypospadias in a 14-week-old mongrel dog and its surgical repair are addressed.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dog; Penis; Prepuce; Urethra.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600009

Caracterização do trânsito bovino no estado do Paraná e Santa Catarina, Brasil, 2008
Provedor de dados: 45
Autores: Felipe,P.L.S.; Nicolino,R.R.; Capanema,R.O.; Haddad,J.P.A.
A intensificação de regras do comércio internacional e de países importadores da carne bovina brasileira exige que o país apresente maior rigor no controle sanitário dos seus produtos. Este trabalho visa auxiliar as instituições de pesquisa e a cadeia do mercado de carne, por meio de uma metodologia baseada em ferramentas de geoprocessamento que caracterizou o trânsito de bovinos nos estados do Paraná e de Santa Catarina, no período de 2008. No estado do Paraná, houve uma regionalização do fluxo bovino entre as microrregiões de origem e os polos de abate, ambos concentrados a norte e noroeste. Santa Catarina concentrou seus polos de abate a leste e sul, mas estes receberam animais oriundos de diferentes regiões do estado. A metodologia empregada neste...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Geoprocessamento; Redes de fluxo; Trânsito animal; Controle sanitário; Vigilância epidemiológica.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300007

Diffuse heterotopic hair in a canine uterus: case report
Provedor de dados: 45
Autores: Malm,C.; Serakides,R.; Silva,J.F.; Nascimento,E.F.; Boeloni,J.N.; Viana,F.A.B.; Souza,E.M.; Ocarino,N.M.
The present report describes the clinical and pathological findings related to diffuse heterotopic hairs associated with pseudo-placentational endometrial hyperplasia in a canine uterus. Macroscopically, the uterus was intensely enlarged and thicker, and the endometrial surface was irregular and covered with black hairs similar to the hairs of the bitch. Histologically, heterotopic hairs associated with pseudo-placentational endometrial hyperplasia were observed.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dog; Hair; Heterotopia; Uterus.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500003

Flape cutâneo em padrão axial auricular caudal para correção de defeito extenso após extirpação de fibrossarcoma facial em felino
Provedor de dados: 45
Autores: Dal-Bó,Í.S.; Brun,M.V.; Bortolini,C.E.; Quadros,A.M.; Chagas,J.A.B.
Um felino que apresentava massa de grandes dimensões, localizada no lábio superior direito, foi submetido à cirurgia para exérese do aumento de volume mantendo-se margem de tecido sadio. O defeito facial foi reconstituído com um flape cutâneo em padrão axial auricular caudal. A ferida apresentou cicatrização em primeira intenção em sua maior extensão, com adequados resultados cosmético e funcional. A avaliação histopatológica revelou se tratar de fibrossarcoma, o qual não apresentou recidivas locais pelo período mínimo de 21 meses de pós-operatório.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cirurgia plástica; Cirurgia reconstrutiva; Neoplasias.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600016

Substituição de monensina sódica por bicarbonato de sódio em dietas de novilhas confinadas
Provedor de dados: 45
Autores: Oliveira,A.P.; Reis,R.A.; Bertipaglia,L.M.A.; Melo,G.M.P.; Berchielli,T.T.; Oliveira,J.A.; Casagrande,D.R.; Balsalobre,M.A.A.
Avaliaram-se os efeitos da substituição da monensina sódica pelo bicarbonato de sódio em dietas de novilhas em confinamento em relação ao desempenho animal, à conversão alimentar e ao parâmetro de fermentação ruminal. Foram utilizadas 56 novilhas mestiças, confinadas por 112 dias, submetidas a dietas com duas porcentagens de concentrado, 50% e 80% da matéria seca, com adição de monensina sódica ou bicarbonato de sódio, em fatorial 2x2. O volumoso utilizado para compor as dietas testadas foi composto de silagem de milho e cana-de-açúcar na proporção de 60:40, respectivamente. O nitrogênio amoniacal foi maior nos animais alimentos com dietas com alto grão. A monensina, na dieta 80:20, proporcionou maiores valores de nitrogênio amoniacal, uma e nove horas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bovinos de corte; Desempenho; Fermentação ruminal; Ionóforo.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400030

Aspectos ambientais e genéticos da prolificidade em caprinos utilizando modelos bayesianos de limiar e linear
Provedor de dados: 45
Autores: Santos,N.P.S.; Sarmento,J.L.R.; Pimenta Filho,E.C.; Campelo,J.E.G.; Figueiredo Filho,L.A.S.; Sousa Júnior,S.C.
Foram estimados os componentes de variância e os parâmetros genéticos da característica prolificidade, utilizando-se inferência bayesiana sob modelo animal linear e de limiar. A prolificidade de cabras mestiças foi estudada com informações referentes ao período de oito anos consecutivos. As análises foram realizadas com cadeias de 500.000 ciclos. Considerou-se burn-in dos 15.000 valores iniciais, sendo tomados valores a cada 250 ciclos, para se obter a distribuição a posteriori com 1.940 amostras. Os efeitos do mês de cobrição e da ordem de parto e o efeito linear do peso à cobrição foram significativos. As herdabilidades foram de 0,03 e 0,18 para o modelo linear e o modelo de limiar, respectivamente. O uso do modelo de limiar mostrou-se adequado,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Caprino; Amostragem de Gibbs; Componentes de variância; Inferência bayesiana; Parâmetros genéticos.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300038

Características de carcaça e de não componentes da carcaça de cordeiros suplementados com sal forrageiro de Gliricidia sepium (Jacq.) Walq
Provedor de dados: 45
Autores: Cirne,L.G.A.; Baroni,M.R.; Oliveira,G.J.C.; Jaeger,S.M.P.L.; Bagaldo,A.R.; Leite,M.C.P.; Marques,J.A.; Carvalho,G.G.P.
O presente experimento foi conduzido com o objetivo de avaliar a porcentagem de inclusão da espécie forrageira Gliricidia sepium (Jacq.) Walq na confecção do sal forrageiro de gliricídia, por meio de características de carcaça e de não componentes da carcaça de cordeiros. Foram utilizados 30 cordeiros mestiços da raça Santa Inês, não castrados, com aproximadamente 180 dias de idade, peso vivo médio de 25kg, confinados, num delineamento experimental inteiramente ao acaso, com cinco tratamentos e seis repetições, em que os tratamentos foram constituídos de zero (100% de NaCl), 93, 95, 97 e 99% de inclusão de feno de gliricídia (7, 5, 3 e 1% de NaCl na formulação do sal forrageiro, respectivamente). A suplementação com sal forrageiro de gliricídia não afetou...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carcaça; Peso de abate; Ovinos; Suplementação.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100041

Estudo das agressões por cães, segundo tipo de interação entre cão e vítima, e das circunstâncias motivadoras dos acidentes, município de São Paulo, 2008 a 2009
Provedor de dados: 45
Autores: Paranhos,N.T.; Silva,E.A.; Bernardi,F.; Mendes,M.C.N.C.; Junqueira,D.M.A.G.; Souza,I.O.M.; Albuquerque,J.O.M.; Alves,J.C.M.; Machado,M.N.P.
Caracterizaram-se as agressões por cães, o perfil das vítimas e dos agressores e as circunstâncias desses acidentes. Calculou-se a amostra aleatória a partir de 20 mil notificações/ano de agressões por cães e realizaram-se 594 entrevistas telefônicas. A maior frequência de agressões ocorreu no sexo masculino, faixa etária de cinco a 14 anos. Lesões leves representaram 80,4%. As profundas (19,1%) ocorreram por cães de porte médio seguidas pelos de grande porte. A maioria dos cães era macho adulto, porte médio. Dos entrevistados, 52,5% desconheciam a condição reprodutiva; 41,0% dos cães não eram esterilizados e 6,4% eram esterilizados. Cães sem raça definida (SRD) provocaram 48,4% dos acidentes, e 57,6% das agressões ocorreram em locais privados. Em 56,2%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cão; Agressão canina; Vigilância; Causas; Interação homem-cão; Saúde pública.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400014

Comparison of three laboratorial tests for diagnosis of canine parvovirus infection
Provedor de dados: 45
Autores: Silva,M.M.O.; Castro,T.X.; Costa,E.M.; Trancoso,T.A.L.; Mendes-de-Almeida,F.; Labarthe,N.V.; Cubel Garcia,R.C.N.
The aim of this study was to evaluate the rapid tests currently used for canine parvovirus (CPV) diagnosis: hemagglutination test (HA), enzyme immunoassay (EIA) and polymerase chain reaction (PCR). A total of 112 fecal samples collected from diarrheic puppies up to one year of age were tested. The EIA was able to detect CPV antigen in 44 samples. By HA, 32 samples tested highly positive with titers &amp;gt;128, eight tested weakly positive (titers 32 and 64) and 72 were negative (titers &lt;16). Using PCR, 57 samples were found positive including 13 EIA-negative and 19 HA-negative samples. The best correlation was observed between EIA and PCR (88.4%). These tests were able to detect all types of CPV, including CPV-2c. Considering that 23%-33% of dogs...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Canine parvovirus; Enteritis; HA; EIA; PCR.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100023

Microbiological profile of donor corneas stored for tectonic transplantation purposes in rabbits
Provedor de dados: 45
Autores: Kobashigawa,K.K.; Martins,B.C.; Massoli,M.C.B.; Ishizawa,T.H.; Schocken-Iturrino,R.P.; Brooks,D.E.; Laus,J.L.
This study aimed to evaluate the microbiota of donor rabbit corneas stored for tectonic transplantation purposes. Swabs from both corneas of 20 rabbits were carefully collected and submitted to microorganism isolation and identification. After this first swab collection, rabbits were euthanized for reasons other than this project and the eyes were enucleated. The corneas were collected and stored to compose the cornea tissue bank. Corneas were stored in a 0.3% tobramycin solution at -20ºC. After 30 days, the corneas were thawed at room temperature and removed from the antibiotic. New swabs were obtained from the corneas and submitted to microorganism isolation and identification. Gram positive organisms were predominant in the rabbit corneal flora before...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rabbit; Corneal bank; Microbiota; Corneal transplant.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100010

Anestesia local por tumescência com lidocaína em cadelas submetidas a mastectomia
Provedor de dados: 45
Autores: Abimussi,C.J.X.; Ferreira,J.Z.; Floriano,B.P.; Paes,F.; Perri,S.H.V.; Oliva,V.N.L.S.
O presente estudo investigou os benefícios da anestesia por tumescência com lidocaína em cadelas submetidas à mastectomia, visando ao conforto do paciente e à sua recuperação pós-operatória. Foram utilizados sete animais, de peso e raças variadas, que apresentavam neoplasia em região de cadeia mamária e que foram submetidos à cirurgia de mastectomia. Todos os animais receberam o mesmo protocolo anestésico, sendo utilizado como MPA a associação entre acepromazina e morfina, nas doses de 0,04mg/kg e 0,4mg/kg (IM), respectivamente. Após 15 minutos, foi alocado um cateter em veia cefálica e realizou-se a indução com propofol 4mg/kg e midazolam 0,2mg/kg, seguida de manutenção anestésica com isofluorano. Posteriormente à instrumentação, procedeu-se à técnica de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cães; Anestesia balanceada; Dor; Neoplasias.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500006

Avaliação de diferentes crioprotetores intra e extracelulares na criopreservação de sêmen de touros
Provedor de dados: 45
Autores: Madeira,E.M.; Bianchi,I.; Vieira,M.B.; Schneider,A.; Severo,N.C.; Pfeifer,L.F.M.; Corrêa,M.N.
Em um delineamento experimental usando o fatorial 3x2, três crioprotetores internos, glicerol (GLI), etilenoglicol (EG) e dimetilformamida (DMF), e dois externos, gema de ovo (GEMA) e lipoproteína de baixa densidade (LDL), avaliaram-se a motilidade ao descongelamento de GLI-GEMA 53,9±1,96, sendo superior aos demais tratamentos (P&lt;0,05). Na avaliação de morfologia ao descongelamento, não houve diferença (P&amp;gt;0,05) entre os tratamentos EG-GEMA 68,3±1,58, EG-LDL 72,2±2,39 e DMF-GEMA 68,7±1,67 que foram mais altos que os demais (P&lt;0,05). A avaliação de integridade de membrana por fluorescência ao descongelamento GLI-GEMA 34,2±2,28 e EG-GEMA 30,9±1,32 não diferiram entre si (P&amp;gt;0,05), mas foram mais elevados que os demais (P&lt;0,05), enquanto...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bovino; Sêmen; Glicerol; Etilenoglicol; Dimetilformamida; LDL.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200017

Prevalência de neoplasias diagnosticadas em cães no Hospital Veterinário da Universidade Eduardo Mondlane, Moçambique
Provedor de dados: 45
Autores: Santos,I.F.C.; Cardoso,J.M.M.; Oliveira,K.C.; Laisse,C.J.M.; Bessa,S.A.T.
Realizou-se um estudo retrospectivo em 210 cães acometidos por neoplasias, atendidos no Hospital Veterinário (HV) da Universidade Eduardo Mondlane, Moçambique, no período de janeiro de 2004 a janeiro de 2009. Foram utilizados dados das fichas clínico-cirúrgicas, referentes às amostras de neoplasias removidas cirurgicamente, achados de exames necroscópicos e citológicos, os quais, posteriormente, foram enviados para o diagnóstico histopatológico. As neoplasias foram correlacionadas com o sexo, a idade e a raça. Foram identificadas 210 neoplasias durante o período de estudo, e dos 27 tipos diferentes as que se destacaram foram as de pele (61,0%), seguidas das neoplasias de glândula mamária (27,60%), do sistema reprodutor (11,90%) e do sistema...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cão; Neoplasias; Histopatologia; Moçambique.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300025

Bipartição escrotal associada à má formação prepucial em ovino Morada Nova: relato de caso
Provedor de dados: 45
Autores: Melo,T.M.V.; Lima Filho,J.A.C.; Silva,J.G.; Amaral,C.R.A.; Correia,F.R.; Sampaio,M.O.; Vasconcelos,N.C.T.; Souza,W.M.A.; Coelho,M.C.O.C.
As alterações anatômicas do aparelho reprodutor masculino de ovinos são pouco relatadas, especialmente a condição de bipartição escrotal. Devido à importância do esclarecimento sobre esta alteração anatômica, objetivou-se relatar o caso de um ovino da raça Morada Nova que apresentava bipartição escrotal associada à má formação prepucial. Observou-se que essa alteração pode ocorrer como condição de adaptabilidade a climas tropicais.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Adaptação; Bioclimatologia; Bipartido; Carneiro; Testículo.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400023

Growth curve of female collared peccaries (Pecari tajacu) raised in captivity in the Brazilian Amazon Region
Provedor de dados: 45
Autores: Garnero,A.D.V.; Marcondes,C.R.; Albuquerque,N.I.; Araújo,R.O.; Pendu,Y.; Guimarães,D.A.
This work aims to determine the most suitable nonlinear model to describe the growth of female collared peccaries (Pecari tajacu). The monthly records of the weight of 10 captive female collared peccaries over a period of two years in the Brazilian Amazon Region were used. The growth models used were the Von Bertalanffy, Brody, Gompertz and Logistic. The parameters were estimated by using the NLIN procedure from the SAS application. The criteria used to verify the adjustment of the models were: asymptotic standard deviation (ASD); coefficient of determination (R²); average absolute residual deviation (ARD) and the asymptotic rate (AR). The Brody model and the Logistic model estimated the highest (19.44kg) and the lowest (19.18kg) asymptotic weight (A),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nonlinear models; Asymptotic weight; Growth rate.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400004

Produtividade de sistemas forrageiros consorciados com leguminosas
Provedor de dados: 45
Autores: Diehl,M.S.; Olivo,C.J.; Agnolin,C.A.; Bratz,V.F.; Bem,C.M.; Agüirre,P.F.; Glienke,C.L.; Correa,M.R.; Serafim,G.
O objetivo desta pesquisa foi avaliar três sistemas forrageiros (SF) com capim elefante (CE) + azevém (AZ) + espécies de crescimento espontâneo (ECE); CE + AZ + ECE + amendoim forrageiro (AM); e CE + AZ + ECE + trevo vermelho (TV), usando-se a mesma área, sob pastejo rotacionado, no decorrer do ano agrícola. O CE foi estabelecido em linhas afastadas a cada 4m. No período hibernal, fez-se o estabelecimento do AZ entre as linhas do CE; o TV foi semeado e o AM foi preservado, considerando-se os respectivos SF. O delineamento experimental foi o inteiramente ao acaso, com três tratamentos (SF), duas repetições (piquetes) e avaliações independentes (ciclos de pastejos). Para avaliação, foram utilizadas vacas da raça Holandesa em lactação, que receberam...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arachis pintoi; Pastejo rotacionado; Pennisetum purpureum; Trifolium pratense; Vacas leiteiras.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500034

Serology for Brucella abortus in cart horses from an urban area in Brazil
Provedor de dados: 45
Autores: Antunes,J.M.A.P.; Allendorf,S.D.; Appolinário,C.M.; Peres,M.G.; Perotta,J. H.; Neves,T.B.; Deconto,I.; Barros Filho,I.R.; Biondo,A.W.; Megid,J.
Avaliou-se a infecção por Brucella abortus em cavalos de carroça de Curitiba e São José dos Pinhais-PR. Um total de 123 amostras foi submetido ao teste do antígeno tamponado acidificado (ATA), soroaglutinação lenta em tubos (SAL) e prova do 2-mercaptoetanol (2-ME) para confirmação dos resultados. Oito (6,5%) equinos foram positivos para o ATA e um animal permaneceu positivo ao teste confirmatório. Existem evidências da presença de brucelose entre os cavalos de carroça.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cavalos de carroça; Brucelose; Brucella abortus; Zoonose.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200044

Thoracic aortic aneurysm in a buck associated with caseous lymphadenitis
Provedor de dados: 45
Autores: Pinheiro,R.R.; Eloy,A.M.X.; Alves,F.S.F.; Andrioli,A.; Santiago,L.B.
This paper reports the clinical, bacteriological and pathological findings of a thoracic aortic aneurysm in a four-year-old Anglo-Nubian goat buck, related to a framework of visceral caseous lymphadenitis. General clinical examination showed heart rate of 75 beats per minute, respiratory rate of 20 movements per minute and ruminal movements of four movements per minute. Superficial lymph nodes were normal upon palpation. Rectal temperature was slightly high (40.5°C). Blood test showed an intense leukocytosis (54,000/µL), characterized by strong neutrophil shift to the left. At necropsy, a large blood clot was detected in the thoracic cavity. The thickening of the myocardium and dilatation of the aorta in the thoracic portion, presenting a saculiform format...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abscesses; Caprine; Corynebacterium pseudotuberculosis; Leukocytosis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300012

PCR em tempo real para detecção do vírus da doença de Aujeszky
Provedor de dados: 45
Autores: Fonseca Júnior,A.A.; Cotorello,A.C.; Dias,N.L.; D'Ambros,R.; Leite,R.C.; Heneimann,M.B.; Reis,J.K.P.
O objetivo deste trabalho foi desenvolver uma PCR em tempo real (qPCR) para o diagnóstico rápido e sensível da doença de Aujeszky. Os iniciadores amplificaram um fragmento de 123 pares de base do gene codificante da glicoproteína D. A qPCR foi testada em 25 amostras de cérebro de suíno positivas e 85 amostras negativas para DA no isolamento viral e na soroneutralização. A sensibilidade analítica foi calculada com acréscimo de um isolado brasileiro do SuHV-1 titulado em amostras de cérebro de suíno negativas na soroneutralização e na PCR. A técnica apresentou sensibilidade analítica de 10-0,5 TCID50/50µL. A qPCR foi capaz de distinguir reações inespecíficas devido a dímero de oligonucleotídeos iniciadores ou amplificações, além do alvo designado (evitando,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Suínos; QPCR; Validação; Doença de Aujeszky.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300028

Lesões melanocíticas em suínos abatidos para consumo
Provedor de dados: 45
Autores: Teixeira,C.; Pires,I.; Ferreira,S.; Vieira-Pinto,M.
O presente estudo teve como principais objetivos conhecer a taxa de ocorrência de lesões melanocíticas (melanose, melanocitomas e melanomas) em suínos abatidos para consumo e identificar possíveis padrões de distinção e de classificação macroscópica dessas lesões. Para tal, procedeu-se à recolha de lesões melanocíticas em matadouro, durante oito meses, e à sua avaliação macroscópica e microscópica. Os resultados deste estudo demonstraram que as melanoses foram as lesões melanocíticas mais frequentemente encontradas (74,04%) e que, relativamente às lesões tumorais, os melanomas (malignos) foram os mais frequentes (21,15%) comparativamente com os melanocitomas (benignos) (4,81%). Pela análise comparativa das características macroscópicas e microscópicas,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Suínos; Melanose; Melanocitoma; Melanoma; Abatedouro.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300026

Phylogeny of canine coronavirus (CCoV) from Brazilian dogs based on membrane protein partial sequences
Provedor de dados: 45
Autores: Guirao,M.P.; Souza,S.P.; Jerez,J.A.; Richtzenhain,L.J.; Brandão,P.E.
Este artigo descreve a anteriormente desconhecida diversidade molecular de amostras brasileiras de Coronavírus canino (CCoV). Vinte e duas amostras foram submetidas à análise da sequência parcial do gene codificador da proteína de membrana, sendo 12 classificadas como CCoV Tipo II e 10 como CCoV Tipo I e uma possível sublinhagem tipicamente brasileira foi encontrada para o CCoV Tipo II.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coronavirus; Dogs; Phylogeny; Membrane; Brazil.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600042

Viabilidade econômica do uso de fontes lipídicas na dieta de vacas em lactação
Provedor de dados: 45
Autores: Murta,R.M.; Veloso,C.M.; Silva,F.F.; Pires,A.J.V.; Rocha Neto,A.L.; Costa,L.T.; Santana Júnior,H.A.D.
Objetivou-se, com este estudo, avaliar a viabilidade econômica do uso de diferentes fontes lipídicas na dieta. O trabalho foi implantado em uma área de 42ha, dividida em oito piquetes, formada de Brachiaria brizantha. Utilizaram-se 12 vacas mestiças Holandês x Zebu, distribuídas em três quadrados latinos 4 x 4. Os quatro tratamentos foram constituídos de diferentes fontes lipídicas, como se segue: dieta sem fonte extra de lipídeos; dieta com caroço de algodão; dieta com óleo de soja; e dieta com óleo de soja de fritura. As dietas foram calculadas para suprir as exigências de mantença e produção de 15kg de leite/dia, com 3,5% de gordura. Utilizaram-se, para efeito de estudo da análise econômica, dois indicadores econômicos, valor presente líquido e taxa...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Custo de produção; Desempenho; Gordura; Retorno econômico.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500026

Application of Scharer's quantitative method for the determination of residual alkaline phosphatase activity in standard Minas
Provedor de dados: 45
Autores: Soares,C.F.; Fonseca,L.M.; Leite,M.O.; Oliveira,M.C.P.P.
Milk pasteurization is a critical issue in the dairy industry, and failures in this process can affect final product safety. Scharer's enzymatic method is still traditionally used to verify pasteurization efficiency compliance, and it is based on screening for residual alkaline phosphatase in milk. Although several methods are used to quantify enzymatic activity to assess milk pasteurization efficiency, there is a small amount of published data regarding the use of these methods to quantify alkaline phosphatase in cheese. In this study, the Scharer's modified method was used to determine the levels of residual alkaline phosphatase in standard minas cheese, before and after 20 days of ripening. The cheeses were made using raw or pasteurized milk with the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alkaline phosphatase; Standard Minas cheese; Scharer's modified method; Spectrophotometry.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400039

The peculiarities of the masticator muscles in rodents
Provedor de dados: 45
Autores: Spataru,C.; Spataru,M.; Vulpe,V.; Lazar,M.
Comparative research concerning masticatory musculature in squirrel, muskrat and rabbit, take into account the emphasizing and morphofunctional interpretation of the osteomuscular particularities involved in the prehension and mastication processes. The development of the coronoid process on the muskrat and squirrel demonstrates the growing of the force when raising the mandible by increasing the action force attached to the temporal muscle, with insertion on the coronoid process. In comparison with that, in the case of rabbits, both the coronoid process and the temporal muscle are reduced. From a philogenetic point of view, it has been found that the species that have the articular condyle lowered at or under the level of the dental tables (carnivores)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Squirrel; Muskrat; Rabbit; Bone; Muscle; Skeleton.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300021

Polyarthritis due to systemic lupus erythematosus in a dog
Provedor de dados: 45
Autores: Krüger,R.M.; França,R.T.; Amaral,A.S.; Schossler,J.E.W.
A five year old male mongrel dog was presented for medical consultation with a history of arthralgia. Complete blood count revealed linfopenia and neutropenia, antinuclear antibody was positive at 1:1,256, and synovial fluid analysis showed inflammatory arthritis with lupus erythematosus cells. No significant proteinuria was detected on urinalysis, and microalbuminuria measurement was performed to determine glomerulonephritis in early stage. Based on clinical signs, synovial fluid analysis, antinuclear antibody test and complete blood count, the diagnosis was systemic lupus erythematosus. The measurement of microalbuminuria was useful to demonstrate the absence of glomerulonephritis, and the performance of complementary tests proved to be indispensable for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dog; Lupus erythematosus cells; Microalbuminuria; Rheumatology.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200014

Polimorfismos genéticos da kappa-caseína e da beta-lactoglobulina e produção de leite em bovinos
Provedor de dados: 45
Autores: Stipp,A.T.; Bignardi,P.R.; Poli-Frederico,R.C.; Sivieri,K.; Costa,M.R.
As variantes gênicas da beta-lactoglobulina (β-LG) e da kappa-caseína (κ-CN) bovinas são associadas à produção, qualidade e características de processamento do leite. O objetivo deste trabalho foi analisar as frequências dos genótipos AA, AB e BB, por meio da técnica de PCR-RFLP, da β-LG e da κ-CN bovinas, e suas associações com a produção de leite (kg leite/dia) em bovinos das raças Girolanda, Holandesa e Jersey. Para a κ-CN, a frequência do genótipo AA foi maior nos animais das raças Holandesa (37%) e Girolanda (63%). Na raça Jersey, houve predomínio do genótipo BB (60%). Para a β-LG, o genótipo AB foi o mais encontrado nas raças Girolanda (54%) e Holandesa (58%), enquanto nos animais da raça Jersey houve predomínio do genótipo BB (45%). Houve associação...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Leite; Proteínas do soro do leite; Caseínas; Frequência de genótipos.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100039

Teores proteicos em dietas para vacas Holandesas leiteiras em confinamento
Provedor de dados: 45
Autores: Paiva,V.R.; Lana,R.P.; Oliveira,A.S.; Leão,M.I.; Teixeira,R.M.A.
Avaliou-se o efeito de dietas com níveis de proteína bruta ‒ PB (10, 12, 14 e 16% na matéria seca ‒ MS) em vacas Holandesas mestiças com produção de leite médio (PL) de 13kg/dia. Utilizou-se silagem de milho como volumoso, e a relação volumoso:concentrado foi de 75:25. Houve aumento linear para o consumo de todos os componentes da dieta, exceto para o consumo de carboidratos totais e carboidratos não fibrosos (CNF), que reduziram linearmente. O consumo dos nutrientes digestíveis totais (NDT) apresentou comportamento quadrático, com valor máximo estimado de 10,13kg/dia, na dose de 15,62% de PB na dieta. As digestibilidades de PB, EE, FDN e FDNcp aumentaram linearmente. Já os valores de digestibilidade de MS, MO, CNF e NDT apresentaram efeito quadrático,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bovinos; Consumo; Nutrição; Digestibilidade; Leite.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400034

Regime alimentar para ganho compensatório de ovinos em confinamento: composição regional e tecidual da carcaça
Provedor de dados: 45
Autores: Nóbrega,G.H.; Cézar,M.F.; Pereira Filho,J.M.; Sousa,W.H.; Sousa,O.B.; Cunha,M.G.G.; Santos,J.R.S.
Determinou-se o efeito do regime alimentar para ganho compensatório sobre a composição regional e tecidual da carcaça de cordeiros terminados em confinamento. Foram utilizados 40 ovinos Santa Inês, machos, com média de 17±1,7kg de peso vivo (PV) e 100 dias de idade. Ao final do período de confinamento, os cordeiros foram abatidos, e a meia carcaça esquerda foi seccionada em cinco cortes comerciais primários: pescoço, paleta, costilhar, lombo e perna. A perna foi dissecada em músculos, ossos e gorduras, e, em seguida, teve seu índice de musculosidade determinado. Foi mensurada a hipertrofia muscular por meio da média do diâmetro das fibras musculares. O peso (g) da meia carcaça esquerda, do pescoço, da paleta, do costilhar, do lombo e da perna diminuiu...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cortes comerciais; Fibra muscular; Gordura; Músculo; Perna.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200024

Desempenho de frangos de corte alimentados com dietas contendo diferentes fontes de selênio, zinco e manganês, criados sob condições de estresse térmico
Provedor de dados: 45
Autores: Boiago,M.M.; Borba,H.; Souza,P.A.; Scatolini,A.M.; Ferrari,F.B.; Giampietro-Ganeco,A.
Avaliaram-se o desempenho e o rendimento de carcaça e partes de frangos de corte alimentados com dietas que continham selênio, zinco e manganês complexados ou não a moléculas orgânicas, criados em diferentes temperaturas. Foram utilizados 980 pintinhos machos de um dia de idade, de linhagem comercial, criados durante 42 dias em três câmaras climáticas, que proporcionaram temperaturas alta, termoneutra e baixa. Foi utilizado um delineamento inteiramente ao acaso, em esquema fatorial 3x2+1, sendo três temperaturas de criação, duas fontes de Se, Zn e Mn - inorgânica e orgânica, mais o tratamento testemunha - criação em câmara termoneutra sem adição de Se, Zn e Mn na ração, com sete repetições por tratamento. As aves criadas em condições de estresse térmico...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Câmara climática; Microminerais orgânicos; Rendimento de carcaça.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100034

Alterações histológicas dos rins e expressão das metalotioneínas e das proteínas de choque térmico em ratos Wistar após exposição ao fungicida tirame
Provedor de dados: 45
Autores: Paiva,F.; Fialho,L.; Rafael,A.; Cabrita,A. Silvério; Pereira,A.M.F.; Capela e Silva,F.
Avaliaram-se as alterações histológicas e a expressão das metalotioneínas (MTs) e das proteínas de choque térmico (Hsp70) nos rins de ratos Wistar após a exposição ao fungicida tirame. Os animais foram distribuídos em três grupos: grupo dieta-padrão; grupo dieta-padrão+óleo de milho; e grupo tirame. Foram encontradas diferenças significativas (P&lt;0,05) na evolução do peso corporal entre os ratos do grupo tirame e os dos grupos controle e óleo de milho, e não foram verificadas lesões histológicas evidentes nos rins dos animais. Foram encontradas diferenças entre os animais do grupo exposto ao tirame e os dos grupos controle e óleo quanto às características histomorfométricas relativas ao corpúsculo renal - exceto para a proporção área da cápsula de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rato; Rins; Tirame; Histologia; Metalotioneínas; Proteínas de choque térmico (Hsp70).
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100015

Effect of calcium addition and pH on yield and texture of Minas cured cheese
Provedor de dados: 45
Autores: Santos,B.N.C.; Silva,C.C.C V.; Domingues,J.R.; Cortez,M.A.S.; Freitas,D.D.G.C.; Chiappini,C.C.J.; Araújo,K.G.L.
Milk calcium concentration is a factor related to cheese texture, an important rheological property of cheese quality as perceived by consumers. This study aimed to evaluate the effect of different pH conditions (5.8 and 6.6) and calcium addition (0, 150, 300 ppm of CaCl2), on yield and nutrient retention of the clots obtained and on the texture of Minascured cheese. Clots were analyzed for wet and dry yield, percentage content and retention of protein, fat and calcium. The texture of the cheese was evaluated by instrumental and sensorial tests. No differences were observed on the wet and dry yields, or on the protein content, fat and calcium retention of clots produced in the different experimental conditions. The instrumental evaluation showed that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cheese; PH; Calcium; Clotting; Texture.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200042

Quantitative computed tomography of the renal cortex in healthy dogs and cats
Provedor de dados: 45
Autores: Oliveira,D.C.; Costa,L.A.V.S.; Silva,I.C.C.; Teixeira,M.W.; Costa,F.S.
Este estudo caracteriza a radiodensidade do córtex renal de 10 cães e 10 gatos adultos, clinicamente saudáveis, por meio de exames de tomografia computadorizada helicoidal. Em cada rim, a radiodensidade renal foi estimada pelo valor médio das três regiões de interesse na região cortical, selecionados no polo cranial, polo caudal e hilo renal. A radiodensidade média do córtex renal nos cães e nos gatos foi, respectivamente, 28,4±4,7 e 22,4±3,6 unidades Hounsfield (HU). Verificou-se que os gatos possuem córtex renal hipoatenuante quando comparado com cães, um fato que está associado à maior deposição de conteúdo lipídico nos rins felinos. A diferença na radiodensidade encontrada entre o córtex renal de cães e de gatos é importante para uma correta...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dog; Cat; Renal cortex; Computed tomography; Radiodensity.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400043

Performance and nutrient utilization in South American juvenile catfish Pseudoplatystoma spp. weighting 89 - 170g, fed at different energy and protein levels
Provedor de dados: 45
Autores: Teixeira,E.A.; Euler,A.C.C.; Faria,P.M.C.; Turra,E.M.; Luz,R.K.; Prado,S.A.; Takata,R.; Ribeiro,P.A.P.; Fontes,D.O.; Ribeiro,L.P.; Saliba,E.O.S.
Most studies in nutrition for the South American catfish (surubim) were limited to the initial phase of development. However, it is clear that performance and nutrient utilization can change during the life stages of a fish. Therefore, this study aimed to evaluate the performance and nutrient utilization in juveniles of surubim fed diets varying in protein and energy levels. Two experiments were performed to test different levels of energy and protein in formulated diets. In the first experiment, surubim juveniles (89.2±4.8g) were fed five diets containing different levels of energy (18.0, 18.8, 19.6, 20.5, 21.3 MJ/kg). In the second experiment, juveniles (170.03±3.35g) were fed five diets containing different levels of protein (360, 400, 440, 480 and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carnivorous species; Neotropical fish; Nutrition; Surubim.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000500031

Características morfológicas do pelame de vacas holandesas puras por cruza na região semiárida de Minas Gerais
Provedor de dados: 45
Autores: Mata e Silva,B.C.; Almeida,A.C.; Marques,L.C.G.; Porto,B.R.; Durães,C.R.S.; Carvalho Júnior,I.S.; Colen,F.
O objetivo do trabalho foi avaliar as características morfológicas como densidade numérica e espessura do pelame e comprimento dos pelos de vacas Holandesas predominantemente negras, puras por cruza em lactação na região de Montes Claros no norte de Minas Gerais. O estudo foi conduzido em duas fases, A: julho/agosto e B: outubro/novembro de 2010, utilizando 12 fêmeas Holandesas em lactação, puras por cruza de pelame predominante negro. Foram medidas as características de densidade numérica (nº pelos/cm²), espessura (mm), comprimento (mm) e a temperatura da superfície do pelame (TPE). Os resultados mostraram que o pelame foi menos denso, com pelos mais curtos na fase B, no entanto a espessura não variou entre as duas fases. No período em que ocorreu maior...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bovino; Comprimento; Densidade; Espessura; Pelo; Estação do ano.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000600026

Desempenho e características bioquímicas de leitões submetidos a dietas com aditivos probióticos, prebióticos, simbióticos e antibióticos
Provedor de dados: 45
Autores: Névoa,M.L.; Caramori Júnior,J.G.; Corrêa,G.S.S.; Arantes,V.M.; Kamimura,R.; Gonçalves,F.C.; Oliveira,M.S.F.; Santos,A.L.; Nalon,R.P.
Avaliaram-se o desempenho e as características bioquímicas de leitões desmamados, utilizando-se aditivos alternativos em substituição aos antibióticos. Foram utilizados 480 leitões machos, distribuídos em delineamento inteiramente ao acaso, composto por cinco tratamentos. A ração foi à base de milho, farelo de soja e um núcleo comercial para leitões. Os tratamentos consistiram em T1: ração sem aditivos, T2: dieta basal com antibiótico, T3: dieta basal com adição de prebiótico, T4: dieta basal com adição de probiótico e T5: dieta basal com adição de simbiótico. Foram avaliados peso corporal, ganho de peso, consumo de ração e conversão alimentar. Em 50 amostras de sangue de leitões, sendo 10 amostras de cada tratamento, avaliaram-se as concentrações séricas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Suíno; Desempenho; Avilamicina; Mananoligossacarídeo; Saccharomyces cerevisae.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200021

Composição corporal de cálcio e fósforo do útero gestante e da glândula mamária de ovelhas Santa Inês
Provedor de dados: 45
Autores: Souza,F.A.; Borges,I.; Macedo Junior,G.L.; Silva,V.B.; Borges,A.L.C.C.; Saliba,E.O.S.
Ovelhas Santa Inês com gestação simples e múltipla foram alimentadas com dietas formuladas para atender a 100% - grupo não restrito - e 85% - grupo restrito - das suas necessidades de energia metabolizável (EM) e proteína bruta (PB). Os animais foram abatidos aos 140 dias de gestação para a retirada do útero da glândula mamária e do útero gestante, os quais foram analisados para o conteúdo de cálcio e de fósforo em função dos tratamentos. A restrição nutricional não influenciou as concentrações de cálcio e fósforo no feto e no útero gestante. Foi observado um aumento de 11,68 gramas de cálcio e de 6,37 gramas de fósforo para cada quilograma de massa fetal produzido aos 140 dias de gestação. As concentrações de cálcio e de fósforo do útero e das membranas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ovelha; Cálcio; Fósforo; Gestação; Feto.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000100007

Autophagy, apoptosis and organelle features during cell exposure to cadmiumc
Provedor de dados: 47
Autores: dos Santos Vergilio,Cristiane; Tenório de Melo,Edésio José.
Cadmium (Cd) induces several effects in different tissues, but our knowledge of the toxic effects on organelles is insufficient. To observe the progression of Cd effects on organelle structure and function, HuH-7 cells (human hepatic carcinoma cell line) were exposed to CdCl2 in increasing concentrations (1 &amp;#956;M - 20 &amp;#956;M) and exposure times (2 h - 24 h). During Cd treatment, the cells exhibited a progressive decrease in viability that was both time- and dose-dependent. Cd treated cells displayed progressive morphological changes that included cytoplasm retraction and nuclear condensation preceding a total loss of cell adhesion. Treatment with 10 &amp;#956;M for 12 h led to irreversible damages. Before these drastic and irreparable damages,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cd; Cell death; Hepatocyte; HuH-7 cells; Mitochondria.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452013000200005

Meta-analysis of the cell cycle related C12orf48
Provedor de dados: 47
Autores: Varisli,Lokman.
The cell cycle is a conserved process from yeast to mammals and focuses on mechanisms that regulate the timing and frequency of DNA replication and cell division. The temporal and spatial expression of the genes is tightly regulated to ensure accurate replication and transmission of DNA to daughter cells during the cycle. Although the genes involved in interphase are well studied, most of the genes which are involved in mitotic events still remain unidentified. Since, the discovery of mitosis related genes is still incomplete, we performed a co-expression and gene ontology analysis for revealing novel mitosis regulated genes. In this study, we showed that C12orf48 is co-expressed with well-known mitotic genes. Moreover, it is also co-expressed with the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: C12orf48; Cell cycle; Co-expression; Gene ontology; Oncomine.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452013000100002

Creatine supplementation in trained rats causes changes in myenteric neurons and intestinal wall morphometry
Provedor de dados: 47
Autores: Franzói De Moraes,Solange Marta; Brogio,Thais Andréia; Nelisis Zanoni,Jacqueline; Vicente Umada Zapater,Mariana Cristina; Barnabé Peres,Sidney; Hernandes,Luzmarina.
Creatine is widely used by athletes as an ergogenic resource. The aim of this study was to evaluate the influence of creatine supplementation on the duodenum of rats submitted to physical training. The number and myenteric neuronal cell bodies as well mucosal and muscular tunic morphometry were evaluated. Control animals received a standard chow for 8 weeks, and the treated ones received the standard chow for 4 weeks and were later fed with the same chow but added with 2% creatine. Animals were divided in groups: sedentary, sedentary supplemented with creatine, trained and trained supplemented with creatine. The training consisted in treadmill running for 8 weeks. Duodenal samples were either processed for whole mount preparations or for paraffin embedding...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nutritional supplementation; Duodenum; Exercise.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452013000200004

Age related interaction of dopamine and serotonin synthesis in striatal synaptosomes
Provedor de dados: 47
Autores: Messripour,Manoochehr; Mesripour,Azadeh.
Tyrosine hydroxylase and tryptophan hydroxylase are key rate limiting enzymes in the biosyn-thesis of dopamine and serotonin, respectively. Since both enzymes are active in striatum, and affected by age, this study was undertaken to investigate interaction between dopamine and serotonin synthesis in brain striatal synaptosomes of aging rat. Male Wistar rats (3 and 30 month old) were killed by decapitation and brain striatal synaptosomes were prepared by discontinuous Ficoll/sucrose gradient technique. Synaptosomes were incubated in the presence of added pargiline (monoamineoxidase inhibitor), dopamine or serotonin synthesized during 25 min was measured by HPLC, employing electrochemical detection. Dopamine synthesis in synaptosomes prepared from young...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aging; Nerve ending; Neurotransmitter; Tyrosine hydroxylase; Tryptophan hydroxylase.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452013000200001

Confocal laser scanning microscopy and immunohistochemistry of cerebellar Lugaro cells
Provedor de dados: 47
Autores: Castejón,Orlando J.
The present paper shows by means of confocal laser scanning microscopy the immunoreactivity of rat cerebellar Lugaro cells for calbindin, synapsin-I, PSD-95, GluR1, CaMKII alpha, and N-cadherin. Lugaro cells were easily characterized by their location beneath Purkinje cells. Calbindin revealed immunoreactivity in the cell body, and the axonal and dendritic processes. Synapsin-I labelled the presynaptic endings on Lugaro cells. Synapsin-I and PSD-95 immunoreactivity demonstrated the localization of presynaptic and postsynaptic endings surrounding cell soma, corresponding to afferent extrinsic and intrinsic cerebellar fibers. GluR1 immunoreactivity of the soma and cell processes indicates that Lugaro cells have functional ionotropic glutamate receptors that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Calbindin; Synapsin-PSD95; GluR1; CamKII; N-cadherin.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452013000200003

High passage numbers induce resistance to apoptosis in C2C12 muscle cells
Provedor de dados: 47
Autores: Pronsato,Lucia; La Colla,Anabela; Ronda,Ana Carolina; Milanesi,Lorena; Boland,Ricardo; Vasconsuelo,Andrea.
Cell lines with high passage numbers exhibit alterations in cell morphology and functions. In the present work, C2C12 skeletal muscle cells with either low (&lt;20) or high (&amp;gt;60) passage numbers (identified as l-C2C12 or h-C2C12, respectively) were used to investigate the apoptotic response to H2O2 as a function of culture age h-C2C12. We found that older cultures (h-C2C12 group) were depleted of mitochondrial DNA (mtDNA). When we analyzed the behavior of Bad, Bax, caspase-3 and mitochondrial transmembrane potential, we observed that cells in the h-C2C12 group were resistant to H2O2 induction of apoptosis. We propose serially cultured C2C12 cells as a refractory model to H2O2-induced apoptosis. In addition, the data obtained in this work suggest...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Over-subculturing changes; Aged muscle cultures; Mitochondrial DNA.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452013000100001

Post-treatment with plant extracts used in Brazilian folk medicine caused a partial reversal of the antiproliferative effect of glyphosate in the Allium cepa test
Provedor de dados: 47
Autores: Dal-Souto Frescura,Viviane; Wouters Kuhn,Andrielle; Laughinghouse Iv,Haywood Dail; Terezinha Paranhos,Juçara; Bosio Tedesco,Solange.
Species of the genus Psychotria are used for multiple purposes in Brazilian folk medicine, either as water infusions, baths or poultices. This study was aimed to evaluate the genotoxic and antiproliferative effects of infusions of Psychotria brachypoda and P. birotula on the Allium cepa test. Exposure to distilled water was used as a negative control, while exposure to glyphosate was used as a positive control. The interaction of extracts (as a post-treatment) with the effects of glyphosate was also studied. Results showed that glyphosate and the extracts of both P. brachypoda and P. birotula reduced the mitotic index as compared with the negative control (distilled water). Surprisingly, however, both extracts from P. brachypoda and P. birotula caused a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Medicinal plants; Psychotria brachypoda; Psychotria birotula; Cell proliferation; Apoptosis.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452013000200002

Breeding in peach, cherry and plum: from a tissue culture, genetic, transcriptomic and genomic perspective
Provedor de dados: 48
Autores: Carrasco,Basilio; Meisel,Lee; Gebauer,Marlene; Garcia-Gonzales,Rolando; Silva,Herman.
This review is an overview of traditional and modern breeding methodologies being used to develop new Prunus cultivars (stone fruits) with major emphasis on peach, sweet cherry and Japanese plum. To this end, common breeding tools used to produce seedlings, including in vitro culture tools, are discussed. Additionally, the mechanisms of inheritance of many important agronomical traits are described. Recent advances in stone fruit transcriptomics and genomic resources are providing an understanding of the molecular basis of phenotypic variability as well as the identification of allelic variants and molecular markers. These have potential applications for understanding the genetic diversity of the Prunus species, molecular marker-assisted selection and...
Tipo: Journal article
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000300001

Synthetic Biology: opportunities for Chilean bioindustry and education
Provedor de dados: 48
Autores: Federici,Fernán; Rudge,Timothy J; Pollak,Bernardo; Haseloff,Jim; Gutiérrez,Rodrigo A.
In an age of pressing challenges for sustainable production of energy and food, the new field of Synthetic Biology has emerged as a promising approach to engineer biological systems. Synthetic Biology is formulating the design principles to engineer affordable, scalable, predictable and robust functions in biological systems. In addition to efficient transfer of evolved traits from one organism to another, Synthetic Biology offers a new and radical approach to bottom-up engineering of sensors, actuators, dynamical controllers and the biological chassis they are embedded in. Because it abstracts much of the mechanistic details underlying biological component behavior, Synthetic Biology methods and resources can be readily used by interdisciplinary teams to...
Tipo: Journal article
Palavras-chave: Synthetic biology; Bioengineering; Education; Engineering; Biotechnology.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000400010

Lipids, proteins, phenolic composition, antioxidant and antibacterial activities of seeds of peanuts (Arachis hypogaea l) cultivated in Tunisia
Provedor de dados: 48
Autores: Sebei,Khaled; Gnouma,Asma; Herchi,Wahid; Sakouhi,Faouzi; Boukhchina,Sadok.
Fatty acid composition of peanut seed oil in four varieties cultivated in Tunisia showed that linoleic (C18:2), oleic (C18:1) and palmitic (C16) acids account for more than 84% for Chounfakhi and Massriya and for more than 85% of the total fatty acids of Trabilsia and Sinya seed oil respectively. Seed oil contents were significantly different (P &amp;#8804; 0.05) and did not exceed 48%. The study of total phenolics revealed that Chounfakhi contained more total phenolics (2.1 mg GAE/g DW), followed by the Massriya and Sinya cultivars (1.35 mg GAE/g DW for each); Trabilsia presented the lowest total phenolic content with 1 mg GAE/g DW. Considerable antiradical ability was found, especially in the Trabilsia peanut seed cultivar (IC50 = 1550 &amp;#956;g/ml),...
Tipo: Journal article
Palavras-chave: Arachis hypogea; Oil; Sterols; Phenols; Antioxidant activity; Antibacterial activity.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000300006

Letters to Editor / Erratum
Provedor de dados: 48
Autores: Ntuli,Tobias.
Tipo: Journal article
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000300013

Culture medium composition affects the gene expression pattern and in vitro development potential of bovine somatic cell nuclear transfer (SCNT) embryos
Provedor de dados: 48
Autores: Arias,María E; Ross,Pablo J; Felmer,Ricardo N.
Different culture systems have been studied that support development of somatic cell nuclear transfer (SCNT) embryos up to the blastocyst stage. However, the use of sequential and two-step culture systems has been less studied. The objective of the present study was to examine the developmental potential and quality of bovine SCNT embryos cultured in different two-step culture media based on KSOM, SOF and the macromolecules FBS and BSA (K-K/FBS, K-S/BSA and K-K/BSA, respectively). No differences were observed in the cleavage rate for any of the culture systems. However, there was a significant difference (P&lt;0.01) in the rate of blastocyst development, with the K-K/ FBS culture system yielding a higher rate of blastocysts (28%) compared to other...
Tipo: Journal article
Palavras-chave: Cattle; Gene expression; KSOM; Nuclear transfer embryos; SOF.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000400016

Nanoparticles and microparticles of polymers and polysaccharides to administer fish vaccines
Provedor de dados: 48
Autores: Rivas-Aravena,Andrea; Sandino,Ana María; Spencer,Eugenio.
Aquaculture has become an important economic sector worldwide, but is faced with an ongoing threat from infectious diseases. Vaccination plays a critical role in protecting commercially raised fish from bacterial, viral and parasitic diseases. However, the production of effective vaccines is limited by the scarcity of knowledge about the immune system of fish. Improving vaccines implies using antigens, adjuvants and employing methods of administration that are more effective and less harmful to the fish. In this context, in recent year there have studies of methods of encapsulating antigens in matrices of different types to apply in fish vaccines. This work reviews the new methods to improve fish vaccines by encapsulating them in polymers and...
Tipo: Journal article
Palavras-chave: Nanoparticles; Vaccine; Aquaculture.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000400012

Using genomics to improve fruit quality
Provedor de dados: 48
Autores: Meneses,Claudio; Orellana,Ariel.
New fruit varieties are needed to satisfy consumers, and the industry is facing new challenges in order to respond to these demands. The emergence of genomic tools is releasing information on polymorphisms that can be utilized to expedite breeding processes in species that are difficult to breed, given the long periods of time required to get new varieties. The present review describes the current stages of the ongoing efforts that are being taken to apply these technologies to obtain varieties with improved fruit quality in species of the family Rosaceae.
Tipo: Journal article
Palavras-chave: Polymorphisms; Marker Assited Selection; Genomic Tools.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000400006

Acclimatization to chronic intermittent hypoxia in mine workers: a challenge to mountain medicine in Chile
Provedor de dados: 48
Autores: Farias,Jorge G; Jimenez,Daniel; Osorio,Jorge; Zepeda,Andrea B; Figueroa,Carolina A; Pulgar,Victor M.
In the past two decades, Chile has developed intense mining activity in the Andes mountain range, whose altitude is over 4,000 meters above sea level. It is estimated that a workforce population of over 55,000 is exposed to high altitude hypobaric hypoxia. The miners work under shift systems which vary from 4 to 20 days at the worksite followed by rest days at sea level, in a cycle repeated for several years. This Chronic Intermittent Hypoxia (CIH) constitutes an unusual condition for workers involving a series of changes at the physiological, cellular and molecular levels attempting to compensate for the decrease in the environmental partial pressure of oxygen (PO2). The mine worker must become acclimatized to CIH, and consequently undergoes an acute...
Tipo: Journal article
Palavras-chave: High Altitude; Mine Workers; Intermittent Hypoxia; Acclimatization; Chilean Model.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000100009

The monthly rhythm of incidence and age at menarche: thirty five years of research: The circa-vacation-study expectancy rhythm of incidence and age at menarche
Provedor de dados: 48
Autores: Valenzuela,Carlos Y.
The hypothesis that the vacation-study-expectancy scholar regime produces most of the monthly rhythm of the age at menarche (AaM) was tested. Studies on monthly menarche incidence (MI) refuted climatic factors as a main factor in this rhythm, and indicated that the main factor of this rhythm is the succession of expectancies of study (Stu-months) or vacation (Vac-months) months within a year. Thus the hypothesis of seasonal circa-annual rhythm should be modified to the circa-[vacation (fiesta)]-[study (non-fiesta)]-expectancies rhythm for the MI and age at menarche annual rhythms. In several countries Vac-months had higher MI than Stu-months. The high MI of Vac-months was followed by a large decrease when girls started their studies and a MI increase...
Tipo: Journal article
Palavras-chave: Age at menarche; Annual rhythm; Circa-vacation-study-expectancy rhythm; Fiesta expectancy; Menarche incidence.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000100003

Physiological behavior of bean (phaseolus vulgaris l.) Seedlings under metal stress
Provedor de dados: 48
Autores: Zengin,Fikriye.
The effects of nickel, cobalt, chromium and zinc on the content of vitamins A, E and C, malondialdehyde (MDA), chlorophyll and carotenoids were investigated in bean seedlings (Phaseolus vulgaris L.) grown in Hoagland solution Control and heavy metal-treated plants were grown for ten days in Hoagland solution. Vitamin A, E, and C content were measured in primary leaves by high performance liquid chromatographic (HPLC). MDA, chlorophyll and carotenoids were measured in leaves by spectrophotometer. In heavy metal treated plants, the levels of MDA, vitamins A, E and C and carotenoids significantly increased, while chlorophyll content decreased in leaves of seedlings. The results indicate that heavy metals caused an oxidative stress in bean plants. The...
Tipo: Journal article
Palavras-chave: Heavy metal; Vitamins A; E and C; MDA; Chlorophyll and carotenoids.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000100012

Association between polymorphism of the G-protein &amp;#946;3 subunit C825T and essential hypertension: an updated meta-analysis involving 36,802 subjects
Provedor de dados: 48
Autores: Zheng,Huan; Xu,Huifeng; Cui,Bin; Xie,Nanzi; Wang,Zhi; Luo,Ming.
Purpose: The G-protein &amp;#946;3-subunit gene C825T polymorphism (GNB3-C825T) has been reported to be associated with essential hypertension (EH), but results from previous studies are conflicting. The present study aimed at investigating the association between this polymorphism and risk of EH using a meta-analysis on the published studies. Materials and Methods: PubMed, Embase, CBM (China Biological Medicine Database), Wanfang and VIP databases were searched to identify eligible studies published in English and Chinese before March 2013. Data were extracted using standardized methods. The association was assessed by the odds ratio (OR) with 95% confidence intervals (CI). Begg's test was used to measure publication bias. Results: A total of 40...
Tipo: Journal article
Palavras-chave: GTP-Binding Proteins; Polymorphism; Genetic hypertension; Meta-Analysis.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000300007

mRNA expression profile of selected oxygen sensing genes in the lung during recovery from chronic hypoxia
Provedor de dados: 48
Autores: Panariti,Alice; Miserocchi,Giuseppe; Rivolta,Ilaria.
This study analyzed the time dependence decay of the mRNA of selected genes important for the hypoxia response. The genes chosen were the two isoforms of hypoxia-inducible factors, the three isoforms of the prolyl hydroxylase domain protein, the vascular endothelial growth factor and endothelial nitric oxide synthase. mRNA and proteins were extracted from lungs obtained from control, hypoxic and 15 minutes normoxic recovered rats and analyzed by Real-time RT-PCR or by the Western Blot technique. Results indicated that in normoxia isoform 2á was the more represented hypoxia-inducible factor mRNA, and among the prolyl hydroxylase domain transcripts, isoform 3 was the least abundant. Moreover, in chronic hypoxia only hypoxia-inducible factor 1&amp;#945; and...
Tipo: Journal article
Palavras-chave: Chronic hypoxia; Hypoxia-inducible Factor; Prolyl Hydroxylase Domain proteins; Lung; RT-PCR.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000200008

Letters to Editor / Erratum
Provedor de dados: 48
Autores: Loyola,Raúl EB.
Tipo: Journal article
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000300014

Protective effect of silk lutein on ultraviolet B-irradiated human keratinocytes
Provedor de dados: 48
Autores: Pongcharoen,Sutatip; Warnnissorn,Prateep; Lertkajornsin,Ongart; Limpeanchob,Nanteetip; Sutheerawattananonda,Manote.
Carotenoids are efficient antioxidants that are of great importance for human health. Lutein and zeaxanthin are carotinoids present in high concentrations in the human retina which are involved in the photoprotection of the human eye. Lutein may also protect the skin from ultraviolet (UV)-induced damage. The present study investigated the protective effect of lutein extracted from yellow silk cocoons of Bombyx mori on human keratinocytes against UVB irradiation. A human keratinocyte cell line and primary human keratinocytes were used to investigate the UVB protection effects of silk lutein and plant lutein. Silk lutein showed no cytotoxicity to keratinocytes. Treatment with silk lutein prior to UVB irradiation enhanced cell viability and cell...
Tipo: Journal article
Palavras-chave: Silk lutein; Keratinocytes; UV; Apoptosis.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000100006

Antitumor function and mechanism of phycoerythrin from Porphyra haitanensis
Provedor de dados: 48
Autores: Pan,Qunwen; Chen,Meizhen; Li,Juan; Wu,Yan; Zhen,Chao; Liang,Bin.
The anti-tumor effect of R-Phycoerythrin (R-PE) from Porphyra haitanensis was studied using cell line HeLa as an in vitro model and Sarcoma-180 (S180) tumor-bearing mice as an in vivo model. The results showed that the combination treatment of R-PE and photodynamic therapy PDT) significantly inhibited the growth of HeLa cells up to 81.5%, with a fair dose-effect relationship, but did not inhibit endothelial cells. The annexin v-fitc/PI fluorescence staining experiments demonstrated that at doses between 0~60µg/mL, apoptosis cells and later stage apoptosis cells or necrosis cells increased significantly as the R-PE dosage increased. DNA electrophoresis showed that after R-PE+PDT treatment of HeLa cells for 24 hours, a light "smear" band between 100~400bp...
Tipo: Journal article
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000100013

Quantitative analysis of nucleolar chromatin distribution in the complex convoluted nucleoli of Didinium nasutum (Ciliophora)
Provedor de dados: 48
Autores: Leonova,Olga G; Karajan,Bella P; Ivlev,Yuri F; Ivanova,Julia L; Skarlato,Sergei O; Popenko,Vladimir I.
We have earlier shown that the typical Didinium nasutum nucleolus is a complex convoluted branched domain, comprising a dense fibrillar component located at the periphery of the nucleolus and a granular component located in the central part. Here our main interest was to study quantitatively the spatial distribution of nucleolar chromatin structures in these convoluted nucleoli. There are no "classical" fibrillar centers in D.nasutum nucleoli. The spatial distribution of nucleolar chromatin bodies, which play the role of nucleolar organizers in the macronucleus of D.nasutum, was studied using 3D reconstructions based on serial ultrathin sections. The relative number of nucleolar chromatin bodies was determined in macronuclei of recently fed, starved...
Tipo: Journal article
Palavras-chave: 3D reconstruction; Ciliates; Electron microscopy; Macronucleus; Nucleoli.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000100010

High gender -specific susceptibility to curare- a neuromuscular blocking agent
Provedor de dados: 48
Autores: Maurya,Santosh K; Periasamy,Muthu; Bal,Naresh C.
Curare, a selective skeletal muscle relaxant, has been used clinically to reduce shivering and as an anesthetic auxiliary in abdominal surgery. It is also widely used in animal experiments to block neuromuscular junction activity. Effective doses of curare diminish muscle contraction without affecting brain function, but at higher doses it is known to be lethal. However, the exact dose of curare initiating muscle relaxation vs. lethal effect has not been fully characterized in mice. In this study we carefully examined the dose-response for achieving muscle inactivity over lethality in both male and female mice (C57BL6/J). The most striking finding of this study is that female mice were highly susceptible to curare; both the EDm and LDm were at least 3-fold...
Tipo: Journal article
Palavras-chave: Curare; Dose response; Gender; Muscle activity; Oxygen consumption.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000100011

Phytochemical Profile and Qualification of Biological Activity of an Isolated Fraction of Bellis perennis
Provedor de dados: 48
Autores: Costa Marques,Thiago H; Santos De Melo,Cassio H; Fonseca De Carvalho,Rusbene B; Costa,Luciana M; De Souza,Alexandre A; David,Jorge M; De Lima David,Juceni P; De Freitas,Rivelilson M.
This study describes the isolation and identification of apigenin-7-O-ghicopyranoside, a flavonoid isolated from the flowers of Bellis perennis L., Asteraceae, an species with a broad spectrum of biological activities. The in vitro antioxidant activity and the inhibition of the enzyme acetylcholinesterase were evaluated. The flavonoid showed strong in vitro antioxidant potential, because of the capacity of removal of hydroxyl radicals and nitric oxide, and also prevented the formation of thiobarbituric acid-reactive substances. These parameters were inhibited at the highest concentration of ApG at rates of 77.7%, 72% and 73.4%, respectively, in addition to inhibiting acetylcholinesterase, suggesting potential use in the treatment of neurodegenerative...
Tipo: Journal article
Palavras-chave: Acetylcholinesterase; Antioxidant; Bellis perennis; Flavonoid.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000300002

TAPCells, the Chilean dendritic cell vaccine against melanoma and prostate cancer
Provedor de dados: 48
Autores: Salazar-Onfray,Flavio; Pereda,Cristián; Reyes,Diego; López,Mercedes N.
Here we summarize 10 years of effort in the development of a biomedical innovation with global projections. This innovation consists of a novel method for the production of therapeutic dendritic-like cells called Tumor Antigen Presenting Cells (TAPCells®). TAPCells-based immunotherapy was tested in more than 120 stage III and IV melanoma patients and 20 castration-resistant prostate cancer patients in a series of phase I and I/II clinical trials. TAPCells vaccines induced T cell-mediated memory immune responses that correlated with increased survival in melanoma patients and prolonged prostate-specific antigen doubling time in prostate cancer patients. Importantly, more than 60% of tested patients showed a Delayed Type Hypersensitivity (DTH) reaction...
Tipo: Journal article
Palavras-chave: Dendritic Cells; Cancer Immunotherapy; Melanoma Vaccine; Technology Transfer; Biotechnology.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000400014

Clinical and experimental approaches to knee cartilage lesion repair and mesenchymal stem cell chondrocyte differentiation
Provedor de dados: 48
Autores: Montoya,Fredy; Martínez,Fernando; García-Robles,María; Balmaceda-Aguilera,Carolina; Koch,Ximena; Rodríguez,Federico; Silva-Álvarez,Carmen; Salazar,Katterine; Ulloa,Viviana; Nualart,Francisco.
Cartilage has poor regeneration capacity due to the scarcity of endogenous stem cells, its low metabolic activity and the avascular environment. Repair strategies vary widely, including microfracture, autologous or allogenic tissue implantation, and in vitro engineered tissues of autologous origin. However, unlike the advances that have been made over more than two decades with more complex organs, including vascular, cardiac or bone tissues, similar advances in tissue engineering for cartilage repair are lacking. Although the inherent characteristics of cartilage tissue, such as the lack of vascularity and low cellular diversity, suggest that it would be one of the more simple tissues to be engineered, its functional weight-bearing role and implant...
Tipo: Journal article
Palavras-chave: Cartilage; Lesion; Microfracture; Stem cells.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000400015

Galectin-8 binds to LFA-1, blocks its interaction with ICAM-1 and is counteracted by anti-Gal-8 autoantibodies isolated from lupus patients
Provedor de dados: 48
Autores: Vicuña,Lucas; Pardo,Evelyn; Curkovic,Cristóbal; Doger,Remziye; Oyanadel,Claudia; Metz,Claudia; Massardo,Loreto; González,Alfonso; Soza,Andrea.
Galectin-8 belongs to a family of mammalian lectins that recognize glycoconjugates present on different cell surface components and modulate a variety of cellular processes. A role of Gal-8 in the immune system has been proposed based on its effects in immune cells, including T and B lymphocytes, as well as the presence of anti-Gal-8 autoantibodies in the prototypic autoimmune disease systemic lupus erythematosus (SLE). We have previously described that Gal-8 induces apoptosis in activated T cells interacting with certain &amp;#946;1 integrins and this effect is counteracted by the anti-Gal-8 autoantibodies. Given that Gal-8 can potentially interact with several glycoproteins, here we analyzed the &amp;#946;2 integrin Lymphocyte Function-Associated...
Tipo: Journal article
Palavras-chave: Galectin-8; LFA-1; ICAM-1; SLE; Autoantibodies.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000300008

Increasing the rate of drying reduces metabolic imbalance, lipid peroxidation and critical water content in radicles of garden pea (Pisum sativum L.)
Provedor de dados: 48
Autores: Ntuli,Tobias M; Pammenter,Norman W; Berjak,Patricia.
Orthodox seeds become desiccation-sensitive as they undergo germination. As a result, germinating seeds serve as a model to study desiccation sensitivity in plant tissues. The effects of the rate of drying on the viability, respiratory metabolism and free radical processes were thus studied during dehydration and wet storage of radicles of Pisum sativum. For both drying regimes desiccation could be described by exponential and inverse modified functions. Viability, as assessed by germination capacity and tetrazolium staining, remained at 100% during rapid (&lt; 24 h) desiccation. However, it declined sharply at c. 0.26 g g¹ dm following slow (c. 5 days) drying. Increasing the rate of dehydration thus lowered the critical water content for survival. Rapid...
Tipo: Journal article
Palavras-chave: Antioxidant; Desiccation; Drying rate; Free radical processes; Lipid peroxidation; Metabolism; Respiration; Pisum sativum; Seed storage.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000200002

Fatty acid composition of Drosophila photoreceptor light-sensitive microvilli
Provedor de dados: 48
Autores: Muñoz,Yorka; Fuenzalida,Karen; Bronfman,Miguel; Gatica,Arnaldo; Sepúlveda,Marcelo; Bacigalupo,Juan; Roth,Alejandro D; Delgado,Ricardo.
Phototransduction, the mechanism underlying the electrical response to light in photoreceptor cells, has been thoroughly investigated in Drosophila melanogaster, an essential model in signal transduction research. These cells present a highly specialized photosensitive membrane consisting of thousands of microvilli forming a prominent structure termed a rhabdomere. These microvilli encompass the phototransduction proteins, most of which are transmembrane and exclusively rhabdomeric. Rhabdomere membrane lipids play a crucial role in the activation of the transient receptor potential ionic channels (TRP and TRPL) responsible for initiating the photoresponse. Despite its importance, rhabdomere lipid composition has not been established. We developed a novel...
Tipo: Journal article
Palavras-chave: Rhabdomere; Drosophila; Microvilli; Phototransduction; TRP channel; Fatty acid analysis.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000300010

Foundational errors in the Neutral and Nearly-Neutral theories of evolution in relation to the Synthetic Theory: Is a new evolutionary paradigm necessary?
Provedor de dados: 48
Autores: Valenzuela,Carlos Y.
The Neutral Theory of Evolution (NTE) proposes mutation and random genetic drift as the most important evolutionary factors. The most conspicuous feature of evolution is the genomic stability during paleontological eras and lack of variation among taxa; 98% or more of nucleotide sites are monomorphic within a species. NTE explains this homology by random fixation of neutral bases and negative selection (purifying selection) that does not contribute either to evolution or polymorphisms. Purifying selection is insufficient to account for this evolutionary feature and the Nearly-Neutral Theory of Evolution (N-NTE) included negative selection with coefficients as low as mutation rate. These NTE and N-NTE propositions are thermodynamically (tendency to random...
Tipo: Journal article
Palavras-chave: Fixation; Loss; Neutral evolution; Polymorphism; Randomness; Selectiveness.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000200001

Genomic Approaches in Marine Biodiversity and Aquaculture
Provedor de dados: 48
Autores: Huete-Pérez,Jorge A; Quezada,Fernando.
Recent advances in genomic and post-genomic technologies have now established the new standard in medical and biotechnological research. The introduction of next-generation sequencing, NGS,has resulted in the generation of thousands of genomes from all domains of life, including the genomes of complex uncultured microbial communities revealed through metagenomics. Although the application of genomics to marine biodiversity remains poorly developed overall, some noteworthy progress has been made in recent years. The genomes of various model marine organisms have been published and a few more are underway. In addition, the recent large-scale analysis of marine microbes, along with transcriptomic and proteomic approaches to the study of teleost fishes,...
Tipo: Journal article
Palavras-chave: Aquaculture; Genomics; Marine biodiversity; Next-generation sequencing; Proteomics.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000400007

DNA Repair Genes XRCC1, XRCC3, XPD, and OGG1 Polymorphisms among the Central Region Population of Saudi Arabia
Provedor de dados: 48
Autores: Alanazi,Mohammad; Pathan,Akbar Ali Khan; Ajaj,Sana Abdulla; Khan,Wajahatullah; Shaik,Jilani P; Al Tassan,Nada; Parine,Narasimha Reddy.
DNA repair is one of the central defense mechanisms against mutagenic exposures. Inherited SNPs of DNA repair genes may contribute to variations in DNA repair capacity and susceptibility to cancer. Due to the presence of these variants, inter-individual and ethnic differences in DNA repair capacity have been established in various populations. Saudi Arabia harbors enormous genetic and cultural diversity. In the present study we aimed to determine the genotype and allele frequencies of XRCC1 Arg399Gln (rs25487), XRCC3 Thr241Met (rs861539), XPD Lys751Gln (rs13181), and OGG1 Ser326Cys (rs1052133) gene polymorphisms in 386 healthy individuals residing in the central region of Saudi Arabia and compare them with HapMap and other populations. The genotype and...
Tipo: Journal article
Palavras-chave: DNA Repair genes; Polymorphism; Saudi population; XRCC1; XRCC3; OGG1; XPD.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000200007

Intravenous administration of bone marrow-derived multipotent mesenchymal stromal cells has a neutral effect on obesity-induced diabetic cardiomyopathy
Provedor de dados: 48
Autores: Calligaris,Sebastián D; Conget,Paulette.
Obesity is a major global health issue. Obese patients develop metabolic syndrome, which is a cluster of clinical features characterized by insulin resistance and dyslipidemia. Its cardiac manifestation, diabetic cardiomyopathy, leads to heart failure. Bone marrow-derived multipotent mesenchymal stromal cells, also referred to as mesenchymal stem cells (MSC) are envisioned as a therapeutic tool not only for cardiovascular diseases but also for other degenerative conditions. Our aim was to evaluate whether the intravenous administration of MSC modifies cardiac dysfunction in obese mice. To this end, C57BL/6 mice were fed a regular (normal) or high-fat diet (obese). Obese animals received the vehicle (obese), a single dose (obese + 1x MSC) or three doses...
Tipo: Journal article
Palavras-chave: Obesity; Metabolic syndrome; Diabetic cardiomyopathy; Multipotent mesenchymal stromal cells; Cardiac function; Dobutamine.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000300005

Letters to Editor / Erratum
Provedor de dados: 48
Autores: Valenzuela,Carlos Y.
Tipo: Journal article
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000300015

Benzothiadiazole (BTH) induces resistance to Pepper golden mosaic virus (PepGMV) in pepper (Capsicum annuum L.)
Provedor de dados: 48
Autores: Trejo-Saavedra,D.L; García-Neria,M.A; Rivera-Bustamante,R.F.
Pepper is an economically important crop in many countries around the world but it is susceptible to many diseases. In Mexico, diseases caused by bipartite begomoviruses have emerged as important problems in pepper. Several control strategies have been explored wiht little success; most of them are based on the avoidance of virus transmission and the breeding for resistance. Abiotic inducers can act at various points in the signaling pathways involved in disease resistance, providing long-lasting, wide-spectrum resistance. Benzothiadiazole (BTH) shares the property of activating the systemic acquired resistance pathway downstream from the SA signaling. In this work, resistance to PepGMV infection was induced in pepper plants by activating the SA pathway...
Tipo: Journal article
Palavras-chave: Geminivirus; Systemic acquired resistance; Induced resistance; BTH.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000400004

Cyanobacterial defense mechanisms against foreign DNA transfer and their impact on genetic engineering
Provedor de dados: 48
Autores: Stucken,Karina; Koch,Robin; Dagan,Tal.
Cyanobacteria display a large diversity of cellular forms ranging from unicellular to complex multicellular filaments or aggregates. Species in the group present a wide range of metabolic characteristics including the fixation of atmospheric nitrogen, resistance to extreme environments, production of hydrogen, secondary metabolites and exopolysaccharides. These characteristics led to the growing interest in cyanobacteria across the fields of ecology, evolution, cell biology and biotechnology. The number of available cyanobacterial genome sequences has increased considerably in recent years, with more than 140 fully sequenced genomes to date. Genetic engineering of cyanobacteria is widely applied to the model unicellular strains Synechocystis sp. PCC 6803...
Tipo: Journal article
Palavras-chave: Cyanobacteria; Genetic engineering; Defense mechanism; Restriction-modification.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000400009

Septin 7: Actin cross-organization is required for axonal association of Schwann cells
Provedor de dados: 48
Autores: Roth,Alejandro D; Liazoghli,Dalinda; Perez De Arce,Felipe; Colman,David R.
Myelin sheaths present two distinct domains: compacted myelin spirals and flanking non-compacted cytoplasmic channels, where lipid and protein segregation is established by unknown mechanisms. Septins, a conserved family of membrane and cytoskeletal interacting GTPases, form intracellular diffusion barriers during cell division and neurite extension and are expressed in myelinating cells. Septins, particularly septin 7 (Sept7), the central constituent of septin polymers, are associated with the cytoplasmic channels of myelinating cells. Here we show that Schwann cells deprived of Sept7 fail to wrap around axons from dorsal root ganglion neurons and exhibit disorganization of the actin cytoskeleton. Likewise, Sept7 distribution is dependent on microfilament...
Tipo: Journal article
Palavras-chave: Axon wrapping; Septins; Myelination; Schwann Cells.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000300004

Cisgenesis and Intragenesis: New tools For Improving Crops
Provedor de dados: 48
Autores: Espinoza,C; Schlechter,R; Herrera,D; Torres,E; Serrano,A; Medina,C; Arce-Johnson,P.
Genetically Modified Organisms (GMO) could be the answer for many relevant problems affecting crops. However, improving crops through GMO is also often associated with safety concerns, environmental risks and health issues due to the presence of foreign DNA. These limitations have prompted the development of alternative technologies. Recently, cisgenesis and intragenesis have been developed as new tools aimed to modify crops. While cisgenesis involves genetic modification using a complete copy of natural genes with their regulatory elements that belong exclusively to sexually compatible plants, intragenesis refers to the transference of new combinations of genes and regulatory sequences belonging to that particular species. So far, application of...
Tipo: Journal article
Palavras-chave: Cisgenesis; Intragenesis; Grapevine promoters; VvGRIP24.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000400003

Effectiveness of zinc in modulating perinatal effects of arsenic on the teratological effects in mice offspring
Provedor de dados: 48
Autores: Ahmad,Mohammad; Wadaa,Mohammad A. M; Farooq,Muhammad; Daghestani,Maha H; Sami,Ahmed S.
Exposure to arsenic via drinking water is considered as a worldwide problem. Studies have shown that arsenic exposure during pregnancy affects embryogenesis and offspring development in rats and mice. Zinc as a micronutrient regulates many physiological functions, including an antioxidative role under various toxic conditions. However, studies on the perinatal protective effect of zinc on offspring need further attention. The present study was designed to evaluate the potential protective role of zinc in mitigating the adverse effects in the offspring of arsenic exposure during pregnancy. The arsenic (40mg/kg body weight) and zinc (4% w/v) doses formed the only drinking fluid source for the experimental groups of dams during the perinatal period of the...
Tipo: Journal article
Palavras-chave: Arsenic; Zinc; Perinatal; Mice offspring; Sensory motor reflexes; Behavior; Oxidative stress.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000200003

Osteogenic molecules for clinical applications: improving the BMP-collagen system
Provedor de dados: 48
Autores: Arrabal,Pilar M; Visser,Rick; Santos-Ruiz,Leonor; Becerra,José; Cifuentes,Manuel.
Among the osteogenic growth factors used for bone tissue engineering, bone morphogenetic proteins (BMPs) are the most extensively studied for use in orthopaedic surgery. BMP-2 and BMP-7 have been widely investigated for developing therapeutic strategies and are the only two approved for use in several clinical applications. Due to the chemical and biological characteristics of these molecules, their authorised uses are always in combination with a carrier based on collagen type I. Although the use of these growth factors is considered safe in the short term, the very high doses needed to obtain significant osteoinduction make these treatments expensive and their long-term safety uncertain, since they are highly pleiotropic and have the capacity to induce...
Tipo: Journal article
Palavras-chave: BMPs; Collagen; FGF-2; Growth factors; Osteogenesis; Recombinant proteins; RGD peptide.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000400013

Microdesiccates produced from normal human tears display four distinctive morphological components
Provedor de dados: 48
Autores: López Solís,Remigio; Traipe Castro,Leonidas; Salinas Toro,Daniela; Srur,Miguel; Toledo Araya,Héctor.
Desiccation of human tears on glass surfaces results in fern-like crystalloids. This phenomenon has been associated with tear normality (Tear Ferning Test, TFT) and is used as a diagnostic aid to evaluate patients with Dry-Eye disease. However, TFT is focused on the assessment of only a minor fraction of desiccated tear samples and considers only the relative abundance and density of fern-like crystalloids. The aim of this study was to characterize morphologically entire desiccated micro volumes of tears from healthy donors. Tear samples were collected from 23 healthy young adult volunteers. Tear aliquots (1-3 &amp;#956;L) were allowed to dry on glass surfaces under ambient conditions of temperature (15-25°C) and relative humidity (40-45%). Dry samples...
Tipo: Journal article
Palavras-chave: Tear; Tear ferning test; Morphometry; Dark-field microscopy.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000300012

Protective effects of lycopene on oxidative stress, proliferation and autophagy in iron supplementation rats
Provedor de dados: 48
Autores: Liu,Chongbin; Wang,Rui; Zhang,Bo; Hu,Chen; Zhang,Hong.
Lycopene is common in diet and known for its antioxidant activities. However, the impact of lycopene on iron metabolism is poorly investigated. In this study, we hypothesize that lycopene can prevent iron-mediated oxidative stress, proliferation and autophagy in liver and use a rat model of nutritional iron supplementation to confirm its intervention in these defence mechanisms. We found that iron supplementation induced cell proliferation predominantly in non parenchymal cells compared with hepatocytes, but not apoptosis. In addition, iron was accumulated within the hepatic lysosomes where it triggered autophagy as evidenced by the formation of autophagic vesicles detected by LC3-B staining. Iron supplementation also induced morphologic alterations of the...
Tipo: Journal article
Palavras-chave: Autophagy; Iron supplementation; Lycopene; Oxidative stress; Proliferation.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000200011

Disruption of reproductive development in male rat offspring following gestational and lactational exposure to di-(2-ethylhexyl) phthalate and genistein
Provedor de dados: 48
Autores: Zhang,Lian-Dong; Deng,Qian; Wang,Zi-Ming; Gao,Ming; Wang,Lei; Chong,Tie; Li,He-Cheng.
Studies of developmental effects of mixtures of endocrine disrupters on the male reproductive system are of great concern. In this study, the reproductive effects of the co-administration of di-2-(ethylhexyl) phthalate (DEHP) and genistein (GEN) during pregnancy and lactation were studied in male rat offspring. Pregnant Sprague-Dawley rats were gavaged from gestation day 3 to postnatal day 21 with vehicle control, DEHP 250 mg/kg body weight (bwyday, GEN 50 mg/kg bwday, GEN 400 mg/kg bwday, and two combinations of the two compounds (DEHP 250 mg/kg bwday + GEN 50 mg/kg bwday, DEHP 250 mg/kg bwday + GEN 400 mg/kg bwday). The outcomes studied were general morphometry (weight, AGD), testicular histology, testosterone levels, and expression at the mRNA level of...
Tipo: Journal article
Palavras-chave: Di-2-(ethylhexyl) phthalate; Genistein; Pregnancy; Lactation; Reproductive system.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000200004

Effects of Dangguibuxue Tang, a Chinese herbal medicine, on growth performance and immune responses in broiler chicks
Provedor de dados: 48
Autores: Li,Xu Ting; Wang,Bin; Li,Jin Liang; Yang,Rui; Li,Si Cong; Zhang,Min; Huang,Wei; Cao,Liang.
The effects of Dangguibuxue Tang (DBT) on growth performance and immunity response in immunosuppressed broiler chicks were investigated in this study. 240 one-d-old broiler chicks (DaHeng S01) were randomly divided into 4 groups, 2.0% DBT-treatment (A), 0.5% DBT-treatment (B), cyclophosphamide-control (C), and control group (D). From 4 d to 7 d of age, chicks in group A, B and C were given cyclophosphamide (CY) at a dosage of 100mg/kg body weight (BW) daily by intraperitoneal injection to induce immunosuppression. Chicks in group D were given an equal volume of physiological saline daily by intraperitoneal injection and considered normal chicks. Groups A and B were supplemented with 2.0% or 0.5% of DBT in the drinking water from 8 d to 42 d of age. Groups...
Tipo: Journal article
Palavras-chave: Dangguibuxue Tang; Growth performance; Immune; Chick.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000200010

Regional density of glial cells in the rat corpus callosum
Provedor de dados: 48
Autores: Reyes-Haro,Daniel; Mora-Loyola,Ernesto; Soria-Ortiz,Berenice; García-Colunga,Jesús.
Axons and glial cells are the main components of white matter. The corpus callosum (CC) is the largest white matter tract in mammals; in rodents, 99% of the cells correspond to glia after postnatal day 5 (P5). The area of the CC varies through life and regional differences related to the number of axons have been previously described. Whether glial cell density varies accordingly is unknown; thus the aim of this study was to estimate glial cell density for the genu, body and splenium -the three main regions of CC-, of P6 and P30 rats. Here we report that the density of CC glial cells reduced by ~10% from P6 to P30. Even so, the density of astrocytes showed a slight increase (+6%), probably due to differentiation of glioblasts. Interestingly, glial cell...
Tipo: Journal article
Palavras-chave: Astrocytes; Corpus callosum; Genu; Glial cells; Splenium.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000100004

Editorial
Provedor de dados: 48
Autores: Arce,J. Patricio; Santos,Manuel J.
Tipo: Journal article
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000400001

Analysis of mRNA expression profiles of carotenogenesis and astaxanthin production of Haematococcus pluvialis under exogenous 2, 4-epibrassinolide (EBR)
Provedor de dados: 48
Autores: Gao,Zhengquan; Meng,Chunxiao; Gao,Hongzheng; Zhang,Xiaowen; Xu,Dong; Su,Yuanfeng; Wang,Yuanyuan; Zhao,Yuren; Ye,Naihao.
The fresh-water green unicellular alga Haematococcus pluvialis is known to accumulate astaxanthin under stress conditions. In the present study, transcriptional expression of eight genes involved in astaxanthin biosynthesis exposed to EBR (25 and 50 mg/L) was analyzed using qRT-PCR. The results demonstrated that both 25 and 50 mg/L EBR could increase astaxanthin productivity and the eight carotenogenic genes were up-regulated by EBR with different expression profiles. Moreover, EBR25 induction had a greater influence on the transcriptional expression of ipi-1, ipi-2, crtR-B, lyc and crtO (&gt; 5- fold up-regulation) than on psy, pds, bkt; EBR50 treatment had a greater effect on the transcriptional expression of ipi-2, pds, lyc, crtR-B, bkt and crtO than on...
Tipo: Journal article
Palavras-chave: Haematococcus pluvialis astaxanthin 2; 4-Epibrassinolide (EBR) carotenoid genes real-time fluorescence quantitative PCR (qRT-PCR).
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000200012

Expression of resistin, CXCR3, IP-10, CCR5 and MIP-1&amp;#945; in obese patients with different severity of asthma
Provedor de dados: 48
Autores: Rojas-Dotor,Sara; Segura-Méndez,Nora H; Miyagui-Namikawa,Ken; Mondragón-González,Rafael.
Asthma studies suggest that alteration in the inflammation pattern may be associated with the severity of asthma. The aim of this study was to compare in vitro the expression of chemokines, chemokine receptors and cytokine production from CD4+ T human lymphocytes of asthmatic, both obese and non-obese patients with different severity levels of asthma. Lymphocytes were labeled with monoclonal anti-human CXCR3/IP-10, MIP-1a/CCR5 antibodies and were analyzed by flow cytometry. Cell culture supernatants were used to measure production of interleukin IL-6 and resistin by ELISA. CXCR3/IP-10 expression increased in non-obese patients with mild persistent asthma (2.2%, p&lt;0.05), moderate persistent asthma (3%, p&lt;0.003) and severe persistent asthma (4%,...
Tipo: Journal article
Palavras-chave: Asthma classification severity chemokines (MIP-1a; IP-10) CC chemokine receptors (CXCR3; CCR5) interleukin-6 resistin.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000100002

Anti-Iipase and antioxidant properties of 30 medicinal plants used in Oaxaca, México
Provedor de dados: 48
Autores: Villa-Ruano,Nemesio; Zurita-Vásquez,Guilibaldo G; Pacheco-Hernández,Yesenia; Betancourt-Jiménez,Martha G; Cruz-Durán,Ramiro; Duque-Bautista,Horacio.
We report the results of in vitro anti-lipase and antioxidant assays using crude ethanolic extracts from 30 plants grown in Oaxaca, México. Anti-lipase tests were performed by using porcine pancreatic lipase (PPL) [EC 3.1.1.3] from Affymetrix/USB. The extracts of Solanum erianthum, Salvia microphylla, Brungmansia suaveolens and Cuphea aequipetala showed up to 60% PPL inhibition. The effect of these extracts on the kinetic parameters of PPL (Km= 0.36 mM, and Vmax=0.085 mM min -1) revealed that the alcoholic preparations of S. erianthum and C. aequipetala engendered a non-competitive inhibition (Vmax=0.055 mM min -1; Vmax= 0.053 mM min -1), whereas those of S. microphylla and B. suaveolens produced a mixed inhibition (Km= 0.567 mM, Vmax=0.051 mM min _1;...
Tipo: Journal article
Palavras-chave: Phytotherapy; Anti-obesity; Antioxidant; Oaxacan ethnobotany.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000200006

Phenolic profiles of nectar and honey of Quillaja saponaria Mol. (Quillajaceae) as potential chemical markers
Provedor de dados: 48
Autores: Montenegro,Gloria; Díaz-Forestier,Javiera; Fredes,Carolina; Rodríguez,Sharon.
Quillaja saponaria Mol. (Quillajaceae) is one of the most important melliferous species in Chile, mainly as a source of monofloral honey. Honey made by A. mellifera presents biological activity against pathogens and antioxidant capacity associated with the presence of phenolic compounds deriving from the nectar, as a result of bee honey foraging. The aim of this study was to identify and quantify the phenolic compounds from the floral nectar of Q. saponaria and the honey made in apiaries in the central zone, and compare the composition of the chromatographic profiles of nectar and honey to known phenolic compounds. The results obtained by HPLC-DAD (high-performance liquid chromatography with diode-array detection) showed a similar profile of phenolic...
Tipo: Journal article
Palavras-chave: Apis mellifera; Chromatographic profile; Floral nectar; Honey; Phenolic compounds; Quillaja saponaria.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000200009

Prevalence of the 35delG mutation in the GJB2 gene in two samples of non-syndromic deaf subjects from Chile
Provedor de dados: 48
Autores: Cifuentes,Lucía; Arancibia,Margarita; Torrente,Mariela; Acuña,Mónica; Farfán,Corina; Ríos,Carolina.
Hearing loss is the most common inherited sensorial deficiency in humans; about 1 in 1000 children suffer from severe or profound hearing loss at birth. Mutations in the GJB2 gene are the most common cause of prelingual, non-syndromic autosomal recessive deafness in many populations; the c.35delG mutation is the most common in Caucasian populations. The frequency of the c.35delG mutation was estimated in two samples of deaf patients from Santiago, Chile. Unrelated non-syndromic sensorioneural deaf patients were examined: Group 1 consisted of 47 unrelated individuals with neurosensory deafness referred to the Chilean Cochlear Implant Program; Group 2 included 66 school children with prelingual deafness attending special education institutions for deaf...
Tipo: Journal article
Palavras-chave: Genetic deafness; Hereditary hearing loss; 35delG mutation frequency; GJB2 mutations; Chilean population.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000300003

The pioneering use of ISSR (Inter Simple Sequence Repeat) in Neotropical anurans: preliminary assessment of genetic diversity in populations of Physalaemus cuvieri (Amphibia, Leiuperidae)
Provedor de dados: 48
Autores: Moresco,Rafaela M; Maniglia,Thiago C; De Oliveira,Classius; Margarido,Vladimir P.
The greatest diversity of anurans in the world is in Brazil and one of the major challenges is to reconcile the accelerated economic development with strategies that aim to maintain this diversity in forest fragments, often representing ESUs of some biomes. This study aimed to obtain data that will support conservation projects through the pioneering use of ISSR analysis in Neotropical anurans, estimating the intra- and interpopulation genetic diversity of four populations of P. cuvieri (Paraná and São Paulo regions). Of the 65 loci scored 58 were polymorphic, with 0.797 intrapopulation variation and 0.203 interpopulation variation. The index of interpopulation genetic differentiation (Fst) proved to be high among the population of Marmeleiro-PR and the...
Tipo: Journal article
Palavras-chave: ESU; Gene flow; Genetic structure; Molecular marker.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000100008

Heavy Metal Resistance Strategies of Acidophilic Bacteria and Their Acquisition: Importance for Biomining and Bioremediation
Provedor de dados: 48
Autores: Navarro,Claudio A; von Bernath,Diego; Jerez,Carlos A.
Microbial solubilizing of metals in acid environments is successfully used in industrial bioleaching of ores or biomining to extract metals such as copper, gold, uranium and others. This is done mainly by acidophilic and other microorganisms that mobilize metals and generate acid mine drainage or AMD, causing serious environmental problems. However, bioremediation or removal of the toxic metals from contaminated soils can be achieved by using the specific properties of the acidophilic microorganisms interacting with these elements. These bacteria resist high levels of metals by using a few "canonical" systems such as active efflux or trapping of the metal ions by metal chaperones. Nonetheless, gene duplications, the presence of genomic islands, the...
Tipo: Journal article
Palavras-chave: Heavy metal resistance; Genomic islands; Environmental bacteria; Biomining; Metal bioremediation; Mobile genetic elements.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000400008

Protective role of vitamins C and E in diclorvos-induced oxidative stress in human erythrocytes in vitro
Provedor de dados: 48
Autores: Eroglu,Sema; Pandir,Dilek; Uzun,Fatma G; Bas,Hatice.
Organophosphate (OP) pesticides such as dichlorvos (DDVP) intoxication has been shown to produce oxidative stress due to the generation of free radicals, which alter the antioxidant defense system in erythrocytes. In this study, the effects of DDVP (1, 10, 100 µM) or DDVP + vitamin C (VC; 10 µM) or vitamin E (VE; 30 µM), on the levels of malondialdehyde (MDA), superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPx) activities in human erythrocytes were examined in vitro. There were no statistical differences between all groups for 1 µM concentration of DDVP. Treatment with DDVP alone produced an increase in the level of MDA and decreased activities of antioxidant enzymes (P &lt; 0.05). Groups treated with vitamins and DDVP showed...
Tipo: Journal article
Palavras-chave: Antioxidant enzyme; Dichlorvos; Oxidative stress; Vitamin; Malondialdehyde.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000100005

Reduction of lns-1 gene expression and tissue insulin levels in n5-STZ rats
Provedor de dados: 48
Autores: Vargas Guerrero,Belinda; García López,Pedro M; González Santiago,Ana E; Domínguez Rosales,José A; Gurrola Díaz,Carmen M.
Objective: The high global incidence of type 2 diabetes has challenged researchers to establish animal models that resemble the chronic stage observed in type 2 diabetes patients. One such model is induced by neonatal streptozotocin (n-STZ) administration to rat pups at 0, 2, or 5 days after birth. In this study, we assessed lns-1 gene expression and tissue insulin levels as well as serum concentration of glucose and insulin, insulin resistance, and histological changes of the islets of Langerhans in n5-STZ rats after 20-weeks post-induction. Methods: Wistar rat pups were randomly distributed into a control group and a streptozotocin-induced group. Experimental induction involved a single intraperitoneal injection of streptozotocin (150 mg/kg) into...
Tipo: Journal article
Palavras-chave: Chronic hyperglycemia; In vivo diabetes models; Lns-1 gene; Type 2 diabetes.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000300009

A simple and effective pressure culture system modified from a transwell cell culture system
Provedor de dados: 48
Autores: Sun,Xuerong; Liu,Xinguang; Zhang,Yuehong; Kuang,Xielan; Lv,Bo; Ge,Jian.
Mechanical pressure plays an important role in many physiological and pathological processes. Mimicking the mechanical pressure present in vitro is necessary for related research, but usually requires expensive and complicated equipment. In this study we created a simple pressure culture system based on the transwell culture system. By cutting off the top rim of the transwell insert, the cells were compressed between the insert membrane and the well floor. The new pressure culture system was proven effective in that it induced cell morphological change, integrin &amp;#946;1 upregulation, actin polymerization and growth change in rat retinal ganglion cells, human nasopharyngeal carcinoma cells and mice embryonic fibroblasts. Though the pressure value is...
Tipo: Journal article
Palavras-chave: Mechanical pressure; Cell culture; Transwell culture system; Cytoskeleton.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000100007

Relationship between severity of adult community-acquired pneumonia and impairment of the antioxidant defense system
Provedor de dados: 48
Autores: Castillo,Rodrigo L; Carrasco,Rodrigo A; Álvarez,Pedro I; Ruiz,Mauricio; Luchsinger,Vivian; Zunino,Enna; Martínez,María A; Avendaño,Luis F.
Oxidant/antioxidant imbalance has been reported in some infectious diseases, including community-acquired pneumonia (CAP). The aim was to assess the antioxidant status in adults with CAP and its relationship with clinical severity at admission. Fifty-nine patients with CAP were enrolled and categorized at admission by the FINE score, from July 2010 to October 2012. In the same period 61 controls were enrolled. Plasma samples were obtained at admission for determination of the ferric reducing ability of plasma (FRAP) and lipid peroxidation (8-isoprostane). Erythrocyte reduced (GSH)/oxidized (GSSG) glutathione, malondialdehyde (MDA) and antioxidant enzyme activity were assessed. Antioxidant status in adults with CAP represented by FRAP and the GSH/GSSG ratio...
Tipo: Journal article
Palavras-chave: Pneumonia; Oxidative stress; Reduced glutathione; Lipid peroxidation.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000200013

Biological applications of honeys produced by Apis mellifera
Provedor de dados: 48
Autores: Montenegro,Gloria; Mejías,Enrique.
Honey is a natural product with many attributes that are useful for humans. The consumption of honey is increasing because of its beneficial biological properties, including antioxidant and antibacterial activities. Even though honey is produced worldwide, many variants of this product have not been studied and their biological potential for alternative uses has not been evaluated. Because of its varied endemic native flora, Chile produces several types of honey. It is likely that these apian products have important biological properties inherited from specific floral sources, but it is absolutely necessary to conduct further chemical analyses to identify and characterize these biological attributes. Sadly, the potential antimicrobial and antitumor...
Tipo: Journal article
Palavras-chave: Honeys; Antioxidants; Natural Antibiotics; Environmental Bioindicator.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000400005

A roadmap to directed enzyme evolution and screening systems for biotechnological applications
Provedor de dados: 48
Autores: Martínez,Ronny; Schwaneberg,Ulrich.
Enzymes have been long used in man-made biochemical processes, from brewing and fermentation to current industrial production of fine chemicals. The ever-growing demand for enzymes in increasingly specific applications requires tailoring naturally occurring enzymes to the non-natural conditions found in industrial processes. Relationships between enzyme sequence, structure and activity are far from understood, thus hindering the capacity to design tailored biocatalysts. In the field of protein engineering, directed enzyme evolution is a powerful algorithm to generate and identify novel and improved enzymes through iterative rounds of mutagenesis and screening applying a specific evolutive pressure. In practice, critical checkpoints in directed evolution...
Tipo: Journal article
Palavras-chave: Directed evolution; Enzyme engineering; High throughput screening; Random mutagenesis.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000400011

Are good ideas enough?: The impact of socio-economic and regulatory factors on GMO commercialisation
Provedor de dados: 48
Autores: Vàzquez-Salat,Núria.
In recent years scientific literature has seen an increase in publications describing new transgenic applications. Although technically-sound, these promising developments might not necessarily translate into products available to the consumer. This article highlights the impact of external factors on the commercial viability of Genetically Modified (GM) animals in the pharmaceutical and food sectors. Through the division of the production chain into three Policy Domains -Science, Market and Public- I present an overview of the broad range of regulatory and socio-economic components that impacts on the path towards commercialisation of GM animals. To further illustrate the unique combination of forces that influence each application, I provide an in-depth...
Tipo: Journal article
Palavras-chave: Genetically modified organisms; GM animals; Policy domains; Governance; Socio-economic factors.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000400002

Electrolyzed-reduced water increases resistance to oxidative stress, fertility, and lifespan via insulin/IGF-1-like signal in C. elegans
Provedor de dados: 48
Autores: Park,Seul-Ki; Park,Sang-Kyu.
Electrolyzed-reduced water (ERW) scavenges reactive oxygen species and is a powerful anti-oxidant. A positive correlation between oxidative stress and aging has been proved in many model organisms. In Caenorhabditis elegans, many long-lived mutants showed reduced fertility as a trade off against longevity phenotype. We aimed to study the effect of ERW on oxidative stress, fertility and lifespan of C. elegans. We also investigated the genetic pathway involved in the effect of ERW on resistance to oxidative stress and lifespan. We compared lifespan and fertility of worms in media prepared with distilled water and ERW. ERW significantly extended lifespan and increased the number of progeny produced. Then the effect of ERW on resistance to oxidative stress and...
Tipo: Journal article
Palavras-chave: Electrolyzed-reduced water; Aging; Daf-16; Fertility; Lifespan.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000200005

Exosomes: mediators of communication in eukaryotes
Provedor de dados: 48
Autores: Lopez-Verrilli,María A; Court,Felipe A.
In addition to the established mechanisms of intercellular signaling, a new way of communication has gained much attention in the last decade: communication mediated by exosomes. Exosomes are nanovesicles (with a diameter of 40-120 nm) secreted into the extracellular space by the multivesicular endosome after its outer membrane fuses with the plasma membrane. Once released, exosomes modulate the response of the recipient cells that recognize them. This indicates that exosomes operate in a specific manner and participate in the regulation of the target cell. Remarkably, exosomes occur from unicellular organisms to mammals, suggesting an evolutionarily conserved mechanism of communication. In this review we describe the cascade of exosome formation,...
Tipo: Journal article
Palavras-chave: Exosome; Nanovesicle; Intercellular communication.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000100001

Chronic Chagas disease: PCR-xenodiagnosis without previous microscopic observation is a useful tool to detect viable Trypanosoma cruzi
Provedor de dados: 48
Autores: Saavedra,Miguel; Zulantay,Inés; Apt,Werner; Martínez,Gabriela; Rojas,Antonio; Rodríguez,Jorge.
We evaluate the elimination of the microscopic stage of conventional xenodiagnosis (XD) to optimize the parasitological diagnosis of Trypanosoma cruzi in chronic Chagas disease. To this purpose we applied under informed consent two XD cages to 150 Chilean chronic chagasic patients. The fecal samples (FS) of the triatomines at 30, 60 and 90 days post feeding were divided into two parts: in one a microscopic search for mobile trypomastigote and/or epimastigote forms was performed. In the other part, DNA extraction-purification for PCR directed to the conserved region of kDNA minicircles of trypanosomes (PCR-XD), without previous microscopic observation was done. An XD was considered positive when at least one mobile T. cruzi parasite in any one of three...
Tipo: Journal article
Palavras-chave: Chronic Chagas disease; PCR; Triatoma infestans; Trypanosoma cruzi; Xenodiagnosis.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000300011

Morcegos em área de Floresta Montana, Visconde de Mauá, Resende, Rio de Janeiro
Provedor de dados: 49
Autores: Luz,Júlia Lins; Costa,Luciana de Moraes; Jordão-Nogueira,Tássia; Esbérard,Carlos Eduardo Lustosa; Bergallo,Helena de Godoy.
O objetivo deste trabalho é apresentar uma lista de morcegos da região de Visconde de Mauá, município de Resende, Estado do Rio de Janeiro, em área de Floresta Ombrófila Densa Montana, localizada acima de 1.300 m de altitude. Foram realizadas sete noites de captura, em novembro de 2005, com amostragens em áreas de voo e forrageio e em abrigos. O total de 13 espécies foi obtido (10 Phyllostomidae, duas Vespertilionidae e uma Molossidae). Dessas, sete espécies são frugívoras, duas nectarívoras, uma hematófaga e três insetívoras. A espécie dominante foi Sturnira lilium com 79,6% das capturas.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Altitude elevada; Mata Atlântica; Inventário de morcegos; Chiroptera; Mammalia.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200190

As abelhas do gênero Xylocopa Latreille (Xylocopini, Apidae) do Estado de São Paulo, Brasil
Provedor de dados: 49
Autores: Marchi,Paola; Alves-dos-Santos,Isabel.
Este estudo contribui para o conhecimento da diversidade das abelhas pertencentes ao gênero Xylocopa Latreille, 1802 do Estado de São Paulo através de uma compilação de informações taxonômicas e biológicas. São apresentadas chaves de identificação para os quatro subgêneros (DasyxylocopaHurd &amp; Moure, 1963; NeoxylocopaMichener, 1954; Schonnherria Lepeletier, 1841 e StenoxylocopaHurd &amp; Moure, 1960) e para as 22 espécies registradas para o Estado, além dos dados existentes sobre sua biologia, plantas visitadas e ocorrência geográfica.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mamangavas; Fontes florais; Registros geográficos; Hymenoptera; Taxonomia.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200249

Insect galls of São Tomé das Letras (MG, Brazil)
Provedor de dados: 49
Autores: Maia,Valéria Cid.
Six localities of São Tomé das Letras (MG, Brazil) were investigated from September, 2011 to June, 2012. The local vegetation was examined in search of insect galls. A total of 152 morphotypes of insect galls were found on 94 plant species (74 genera and 37 families). Fabaceae, Melastomataceae, Myrtaceae, and Asteraceae were the plant families with the greatest richness of galls, with 20, 18, 17, and 12 gall morphotypes, respectively. The super host genera were Copaifera L. (Fabaceae), Myrcia DC. ex. Guill. (Myrtaceae), and Miconia Ruiz &amp; Pav. (Melastomataceae), with 10, 10 and 09 gall morphotypes, respectively. The super host species was Copaifera cf.langsdorfii Desf. (Fabaceae), with 10 gall morphotypes. Galls were found on leaves, stems, buds, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic forest; Gall richness; Host plants; Insect-plant interaction.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400164

Predation on artificial nests in open habitats of central Brazil: effects of time and egg size
Provedor de dados: 49
Autores: Oliveira,Cleyton Washington da Silva; Almeida,Glaudson Pereira; Paiva,Luciana Vieira de; França,Leonardo Fernandes.
The accuracy of artificial nests in representing natural patterns of nest predation has been widely studied in temperate regions and egg size is one of the most tested sources of bias. In the neotropics, experiments with artificial nests usually used larger than natural eggs, despite suggestions in literature that the eggs should be similar to those of the local species. Here, we tested the hypothesis of spatial-temporal variation in predation risk of artificial nests in relation to egg size. We used quail (Coturnix coturnix; large), Chestnut-bellied Seed-finch (Oryzoborus angolensis; small) and plasticine (both sizes) eggs placed in artificial nests. We analyzed daily nest survival using models in the Program MARK. The best-fit model included the effects...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bird; Cerrado; Neotropical savanna; Nest success; Reproduction.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100016

Frugivory by the White-bearded Manakin (Manacus manacus, Pipridae) in restinga forest, an ecosystem associated to the Atlantic forest
Provedor de dados: 49
Autores: Cestari,César; Pizo,Marco Aurélio.
Manakins (Pipridae) are one of the most abundant fruit-eaters and seed dispersers in the understory of neotropical forests. We describe the fruit diet of the White-beaded Manakin (Manacus manacus) based on a two-year study of its foraging behavior on fruiting plants, collecting seeds from feces and regurgitations of trapped individuals, and from lekking males' courts in restinga forests at the southern coast of the state of São Paulo, Brazil. Manacus manacus consumed 58 species of fruits from 30 different plant families. Fruits were taken at 3.5 ± 1.9 m height and 1.5 ± 1.6 m below the forest canopy using mainly sally-strike and glean manoeuvres. Most of the fruits were berries ranging from 3.1 to 17 mm in diameter and containing from 1 to 86 seeds. Fruits...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Dispersion; Fruits; Animal-plant interaction; Seeds.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200345

Experimental assessment of temperature increase and presence of predator carcass changing the response of invertebrate shredders
Provedor de dados: 49
Autores: Navarro,Fernanda Keley Silva Pereira; Rezende,Renan de Souza; Gonçalves Júnior,José Francisco.
The role of the invertebrate shredders in leaf decomposition process in tropical lotic ecosystems has been explored only recently. In addition to the influence of the quality of litter and the temperature, the risk of predation generally results in changes on the survival and behavior of invertebrate shredders. The aim of this study was to observe the responses of the invertebrate shredders to different species of leaf litters (Experiment 1: Talauma ovata and Inga laurina ; Experiment 2: Talauma ovata, Inga laurina and Richeria grandis ) under gradual temperature rise (24 °C, 26 °C, 28 °C, 30 °C, 32 °C), in the presence (Experiment 2) and absence (Experiment1) of fish (Astyanax sp.) carcasses, as well as to observe the possible consequences of the leaf...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feeding activity; Global warming; Decomposition.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400028

Report of Macraspis pseudochrysis Landin, 1956 (Coleoptera: Scarabaeidae: Rutelinae) on açai palms (Euterpe oleracea Mart.) in floodplains in the state of Amapá, Brazil
Provedor de dados: 49
Autores: Jesus-Barros,Cristiane Ramos de; Freitas,Lidiane Silva; Grossi,Paschoal Coelho.
The açaí palm (Euterpe oleracea) is an East Amazon palm found most frequently in the Amazon River estuary. Riverside dwellers in different regions of the state of Amapá have recently been observing a species of coleopteran attacking the inflorescences of açai palms. With a view to identifying a species of coleopteran attacking inflorescences of E. oleracea in the Brazilian state of Amapá, insects were collected in the regions of Abacate da Pedreira (two individuals) and Ariri (six) in the city of Macapá. Five individuals were also collected in Mazagão. The insects were collected from açai palm inflorescences using entomological nets, then preserved and submitted for identification. They were identified as Macraspis pseudochrysis Landin, 1956 (Coleoptera:...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Açai palm; Arecaceae; Macraspis; Amapá; Amazon.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100042

A new genus and species of Lasiopteridi (Diptera, Cecidomyiidae) associated with Myrciaria delicatula (Myrtaceae) from Brazil, with identification keys of tribes and unplaced genera
Provedor de dados: 49
Autores: Rodrigues,Alene Ramos; Maia,Valéria Cid; Wenzel,Cristina Rodrigues; Mendonça Junior,Milton de Souza.
Fernandesia meridionalis Rodrigues &amp; Maia, a new genus and species of Cecidomyiidae associated with Myrciaria delicatula O. Berg (Myrtaceae) is described and illustrated (male, female, pupa, and larva) based on material from Rio Grande do Sul, Brazil. The new genus belongs to Lasiopteridi, but it cannot be placed to tribe. A key to the tribes of Lasiopteridi and one to the unplaced genera of Neotropical Lasiopteridi are given.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Myrciaria; Galler insect; Taxonomy; Rio Grande do Sul.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200063

Seasonality of Mansonia titillans during dam construction, Biritiba-Mirim, São Paulo State, Brazil
Provedor de dados: 49
Autores: D'Avila,Frederico Alves; Gomes,Almério de Castro.
A two and a half year survey was conducted at a dam in southeastern Brazil. Shannon Traps were used for sampling. Kruskal-Wallis test showed little relation between rainfall and abundance. The data clearly show three abundance peaks, all of them in the end of the dry season, in consonance with the scarce literature existent. Although Kruskal-Wallis Test did not find a clear preference for the dry season, Pairwise Wilcoxon Rank Test revealed a significant difference between Fall and Spring samples. Ma. titillans population had a peak on late winter/early spring, close to the begin of wet season.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mansoniini; Insect vector; Artificial lake.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100007

Larval trematodes in freshwater gastropods from Mato Grosso, Brazil: diversity and host-parasites relationships
Provedor de dados: 49
Autores: Mattos,Aline Carvalho de; Boaventura,Maria Fernanda Furtado; Fernandez,Monica Ammon; Thiengo,Silvana Carvalho.
A survey for freshwater gastropods carrying trematodes parasites was conducted in Manso Dam and the surrounding areas frequented by tourist, focusing particularly on the Pantanal region. Infected snails were recovered from twelve of the eighteen investigated municipalities and forty-one cercaria-snail pairings were recorded. Among these pairings were several first records of snails serving as intermediate hosts for trematodes in Brazil including Biomphalaria amazônica Paraense, 1966, Biomphalaria occidentalis Paraense, 1981, Marisa planogyra Pilsbry, 1933, Pomacea maculata Perry, 1830, Pomacea scalaris (d'Orbigny, 1835) and Gundlachia radiata (Guilding, 1828). Echinostomatidae and Strigeidae were the most common trematode families (ca. 47%) and the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Epidemiology; Cercariae; Biological diversity; Hydroelectric power plant; Pantanal.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400034

Seasonal pattern of Chrysomelidae (Coleoptera) in the state of Paraná, southern Brazil
Provedor de dados: 49
Autores: Linzmeier,Adelita Maria; Ribeiro-Costa,Cibele Stramare.
The aim of this paper was to describe the seasonal patterns of Chrysomelidae and of its most abundant species at eight sites in different geomorphological and floristic regions in the state of Paraná, southern Brazil. Samples with Malaise traps, from August 1986 to July 1988 were performed. The Chrysomelidae showed seasonal patterns with the highest abundance in the spring and/or summer at all sites, but with variations in the months of highest captures. Photoperiod was the variable that most influenced the seasonality of Chrysomelidae, and along with temperature and relative humidity, determined most of the seasonal patterns of the family at the different sites. Some dominant species of Chrysomelidae showed different seasonal pattern compared to the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abundance; Alticini; Herbivorous insects; Distribution pattern; Seasonality.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100018

Insect galls of the xeric vegetation of Ilha do Cabo Frio (Arraial do Cabo, RJ, Brazil)
Provedor de dados: 49
Autores: Maia,Valéria Cid; Souza,Marcelo da Costa.
The xeric vegetation of Ilha do Cabo Frio (Arraial do Cabo, RJ) was investigated for insect galls, in May, June and August of 2012, totalizing 24 hours of field work. Forty-five morphotypes of insect galls were found on 29 species of host plant (25 genera and 18 families). Asteraceae and Myrtaceae were the most galled plant families. Leaves were the most galled plant organ, with ca. 62% of the total, followed by stems (ca. 22%). Globoid and fusiform galls were the most frequent with about 29% and 24%, respectively. The majority was glabrous (ca. 91%), and one-chambered (ca. 84%). Gallers of 30 morphotypes were determined. They belong to Diptera (Cecidomyiidae), and Lepidoptera. The former was the most frequent. Larvae of Muscomorpha (Diptera) (probably...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Galling insects; Interaction insect-plant; Host plants; Island.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300278

Catfishes as prey items of Potamotrygonid stingrays in the Solimões and Negro rivers, Brazilian Amazon
Provedor de dados: 49
Autores: Shibuya,Akemi; Zuanon,Jansen.
In spite of the fact that catfish have rarely been reported as food items in the diets of freshwater stingrays, they are commonly observed in the stomach contents of species inhabiting the Solimões and Negro rivers in the Brazilian Amazon. The stomach contents of six rays from the Solimões River and 64 from the Negro River were analyzed, and catfishes (distributed among the families Callichthyidae, Cetopsidae, Doradidae and Loricariidae) were found in the stomach contents of four and 10 of these rays, respectively, comprising a frequency of occurrence of 20%. These data indicate a relevant participation of catfishes in the diets of potamotrygonid rays in the Amazon, and may reflect the regional diversity and abundance of Siluriformes in the region.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diet; Feeding; Freshwater stingrays; Myliobatiformes; Siluriformes.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100041

Feeding ecology of Dash-dot Tetra Hemigrammus belottii(Steindachner 1882) (Characiformes: Characidae) in the streams of the Urucu River basin, central Amazonia, Brazil
Provedor de dados: 49
Autores: Gonçalves,Andrey Felipe Gomes; Prudente,Bruno da Silveira; Carvalho Filho,Fernando da Silva; Montag,Luciano Fogaça de Assis.
The present study describes aspects of feeding ecology of Dash-dot TetraHemigrammus belottii (Characiformes: Characidae) collected in the Urucu River basin in Coari, Amazonas (Brazil), aims to respond the following question: What is the influence of hydrological periods (dry and wet) and spatial distribution in the diet of H. belottii? The specimens were collected between 2006 and 2009 in seven streams in the Urucu basin using standard capture methods. Their stomachs were removed for diet composition analyses. The alimentary items were weighed and identified for subsequent analyzes related to feeding intensity by repletion index (RI%) and importance by alimentary index (AIi%). A total of 227 specimens were analyzed, with a mean standard length of 16.5±5.6...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allochthonous item; Amazon basin; Trophic ecology.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300141

Floral-oil-producing Plantaginaceae species: geographical distribution, pollinator rewards and interactions with oil-collecting bees
Provedor de dados: 49
Autores: Martins,Aline Cristina; Alves-dos-Santos,Isabel.
Floral oils as reward to pollinators occur in eleven plant families and appeared at least 28 times in the evolutionary history of flowering plants. They are produced in epithelial or tricomatic glands and collected by oil bee visitors. The present paper focuses on floral-oil-producing species of Plantaginaceae, a Neotropical group namely Angelonia clade. This group comprises around 40 described species in the genera Angelonia, Basistemon, Monttea, Monopera and the oil-less Melosperma. We present a revision of all species of the Angelonia clade, their geographical distribution, resources offered to pollinators and records of flower visitors, especially oil-collecting bees. These plants rely only on oil-collecting species in the tribe Centridini and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plant-insect interactions; Oil-collecting bees; Oil-flowers; Plantaginaceae; Apidae.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400077

Assemblage of fish species associated with aquatic macrophytes in Porto Murtinho Pantanal, Mato Grosso do Sul, Brazil
Provedor de dados: 49
Autores: Súarez,Yzel Rondon; Ferreira,Fabiane Silva; Tondato,Karina Keyla.
The Porto Murtinho Pantanal lies at the limit of the Upper Paraguay River basin, and despite its biogeographical importance, several aspects of the ecology of the fish assemblage are not known. Monthly samples of fish associated with aquatic macrophytes were taken from February 2009 through January 2011. A total of 46,327 individuals were collected, belonging to 144 species. Characiformes and Siluriformes were the predominant orders, and Odontostilbe pequira, O. paraguayensis and Bryconamericus exodon were the most abundant species. Two species, Cynopotamus sp. and Pimelodus mysteriosus, were recorded for the first time in the Pantanal, and a new occurrence record of Cichla piquiti was observed, representing an approximately 400 km range expansion in your...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Small fish; Paraguay river; Fish inventories.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200182

Using fish assemblages in different habitats to develop a management plan for the Upper Essequibo Conservation Concession, Guyana
Provedor de dados: 49
Autores: Willink,Philip Wesley; Alexander,Eustace; Jones,Christopher Campbell.
The Upper Essequibo Conservation Concession is a reserve in central-eastern Guyana managed by Conservation International. The site is uninhabited by people and poorly studied. The first scientific fish survey was in 2007 in conjunction with the filming of the BBC nature documentary Lost Land of the Jaguar. Aquatic habitats were primarily flowing water, ranging from the main channel of the Essequibo River to small forest creeks. Ponds and seasonally flooded forests were uncommon. Large predatory fishes were abundant in the Essequibo River. Fishes tolerant of low oxygen levels were common in flooded forests and small forest creeks. There was zero similarity between the fish assemblages of the Essequibo River and flooded forests / small forest creeks. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquatic continuum; Flooded forests; Nature documentary; Rapid assessment; Fish.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400260

Herpetofauna do Parque Natural Municipal de Sertão, Rio Grande do Sul, Brasil
Provedor de dados: 49
Autores: Zanella,Noeli; Paula,Almir de; Guaragni,Samara Arsego; Machado,Leonardo de Souza.
The northern part of the state of Rio Grande do Sul was extensively deforested in recent decades, and only isolated fragments of the original vegetation remain. The Parque Natural Municipal de Sertão comprises a remnant of Atlantic Rain Forest, one of the largest fragments in northern Rio Grande do Sul. This study examined the diversity of the herpetofauna, focusing on environmental distribution, seasonality and species richness. We used complementary methods of sampling such as pitfall traps, active search and occasional encounters. We recorded 23 species of frogs, nine snakes and one lizard. With respect to the relationship between amphibians and reptiles and the structural and abiotic factors of the environment, the edge of the fragment showed higher...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anuran; Community; Conservation; Reptile; Faunistic inventory; Diversty.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400290

Histerídeos (Staphyliniformia: Coleoptera: Histeridae) dos Campos Gerais, Paraná, Brasil
Provedor de dados: 49
Autores: Leivas,Fernando Willyan Trevisan; Grossi,Paschoal Coelho; Almeida,Lúcia Massutti.
Histeridae é um grupo de besouros com morfologia diversificada, conhecidos como predadores generalistas e que ocorrem em uma ampla variedade de habitats. O objetivo deste trabalho foi apresentar uma primeira listagem dos táxons de Histeridae ocorrentes na região dos Campos Gerais (Parques Estaduais de Vila Velha, do Cerrado, e do Cânion Guartelá) e fornecer informações sobre as espécies das Unidades de Conservação do Estado do Paraná. Também foram apresentados os métodos apropriados para coleta do grupo. Os Histeridae dos Campos Gerais estão, até o momento, representados por 29 espécies de oito gêneros: Haeteriinae sp. (1 sp.), Coelister Bickhardt, 1917 (1 sp.), Epierus Erichson, 1834 (1 sp.), Euspilotus Lewis, 1907 (6 spp.), Hister Linnaeus, 1758 (2...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodiversidade; Histeroidea; Insecta; Região Neotropical; América do Sul.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200196

Diet of two sit-and-wait lizards, Phyllopezus pollicaris (Spix, 1825) (Phyllodactylidae) and Hemidactylus mabouia (Moreau de Jonnès, 1818) (Gekkonidae) in a perianthropic area of Mato Grosso do Sul, western Brazil
Provedor de dados: 49
Autores: Albuquerque,Nelson Rufino de; Costa-Urquiza,Arianna da Silva; Soares,Michelly Pereira; Alves,Ledilene Saucedo; Urquiza,Marcus Vinícius Santiago.
The dietary compositions of two sit-and-wait lizard species, Hemidactylus mabouia and Phyllopezus pollicaris, which co-occur over rocky substrate and vertical rock walls in a perianthropic area of western Brazil, were described. Both species showed a generalist feeding pattern, feeding mainly on insects. The most frequent prey items in the diet of P. pollicaris were Coleoptera, Araneae and Homoptera whereas the most important were Coleoptera and Homoptera, respectively. For H. mabouia the most frequent prey items were Araneae followed by Coleopterae and Hemiptera, whereas the most important items were H. mabouia followed by Formicidae and Hemiptera. Our identification into broader prey-types categories (i.e., order or family-level) suggests that some...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Food habits; Reptilia; Squamata; Pantanal; Mato Grosso do Sul.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400376

Honeydew foraging by birds in an Atlantic Forest fragment of Minas Gerais State, Brazil
Provedor de dados: 49
Autores: Teixeira,Fagner Daniel; Azevedo,Fernando Cesar Cascelli de.
Honeydew foraging by birds has been extensively documented in recent years. However, this interaction has been poorly documented in Brazil, with predominance of few species of birds foraging only in Mimosa scabrella trees. With the objective of describing the behavior of birds interacting with scale insects associated with trees, we conducted a study at the Serra de São José, Tiradentes, in the State of Minas Gerais, Brazil. Observations were recorded from June to July 2012. We observed 13 species of birds feeding on honeydew scale insects, eight never previously recorded. We observed individuals using aerial and surface maneuvers to collect the honeydew on the branches or reaching the droppings below the branches. These species were observed foraging...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Trophic connections; Excretion; Insects; Behavior maneuvers; Serra de São José.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400391

Guia ilustrado de Leguminosae Juss. arbóreas do Corredor de Biodiversidade Santa Maria - PR
Provedor de dados: 49
Autores: Marcon,Thaís Regina; Temponi,Lívia Godinho; Gris,Darlene; Fortes,Andréa Maria Teixeira.
Leguminosae representa uma das principais famílias em estudos florísticos e fitossociológicos. Tal riqueza pode ocasionar dificuldades na identificação, principalmente em coletas de amostras estéreis. O objetivo do presente estudo foi elaborar um guia ilustrado com dicas de campo, bem como uma chave de identificação, abordando as principais características vegetativas diagnósticas das Leguminosae arbóreas do Corredor de Biodiversidade de Santa Maria, o qual une a Faixa de Proteção do Lago de Itaipu ao Parque Nacional do Iguaçu. O corredor reúne vários remanescentes de Floresta Estacional Semidecidual do sudoeste do Paraná e áreas reflorestadas. Foram coletadas amostras em diferentes áreas do corredor, sendo três remanescentes florestais (Parque Nacional do...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Guia de identificação; Chave dicotômica; Fabaceae; Caracteres vegetativos.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300350

Reproduction and demographic trends of Sula Leucogaster at the Moleques do Sul Archipelago, Santa Catarina, Brazil
Provedor de dados: 49
Autores: Branco,Joaquim Olinto; Fracasso,Hélio Augusto Alves; Moraes-Ornellas,Valéria dos Santos.
The Brown Booby, Sula Leucogaster, is one of the most common species of marine birds of the Brazilian coast and, in spite of being a viable subject for long-term studies, in Brazil there are scarce demographic descriptions of this species obtained from observations made in sets of consecutive years. This paper presents breeding information collected in monthly samples taken in the Moleques do Sul Island, Florianópolis, Santa Catarina, during a five year period. The main island was divided into three different study areas, in which adult censuses were conducted, along with counts of number of nests, eggs, chicks and incubating adults. No significant change was found in these numbers during the sampled years and the breeding season extended over the entire...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brown Booby; Reproduction; Demographic parameters; Santa Catarina; Brazil.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400039

Protozooplankton and its relationship with environmental conditions in 13 water bodies of the Mogi-Guaçu basin - SP, Brazil
Provedor de dados: 49
Autores: Bagatini,Inessa Lacativa; Spínola,Ana Lúcia Gerardi; Peres,Bianca de Miranda; Mansano,Adrislaine da Silva; Rodrigues,Mafalda Alexandra Antunes; Batalha,Marco Antônio Portugal Luttembarck; Lucca,José Valdecir de; Godinho,Mirna Januária Leal; Tundisi,Takako Matsumura; Seleghim,Mirna Helena Regali.
Protozooplankton is an important component of the aquatic microbial food webs and its composition, density, and distribution reflect the chemical, physical, and biological aspects of the environment. Considering the scarce literature on freshwater protozoans in Brazil and on protozoan ecology in subtropical environments, we listed the ciliates and amoebae taxa found in 13 water bodies in São Paulo State and analyzed their abundance in relation to the environmental variables. We collected two samples in each environment, fixed immediately with mercuric chloride and stained with bromophenol blue. After microscopical analysis, 74 protozoan genera were identified and the Ciliophora were dominant in the majority of the environments. The Stichotrichia,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ciliates; Amoebae; Plankton; Environmental variables; Freshwater.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400152

First record of endoparasitism of Pycnogonida in Hydrozoan polyps (Cnidaria) from the Brazilian coast
Provedor de dados: 49
Autores: Bettim,Ariane Lima; Haddad,Maria Angélica.
Despite the relatively high number of recent studies on Cnidaria off the Brazilian coast, we have observed only two records of parasitism on macromedusae and none on polyps. Endoparasitic associations between Pycnogonida larvae and hydroids have been well known since the early 20th century. Protonymph larvae develop inside the gastrovascular cavity of polyps, typically gastrozooids, which are then called gallzooids. This short communication is an unprecedented record of parasitism on the polyps of Brazilian cnidarian fauna. The parasitic association between Pycnogonida Anoplodactylus stictus and a new hydroid species of Podocoryna has been casually detected on the encrusting communities of experimental polyethylene plates installed at the Paranaguá Yacht...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Benthic community; Hydrozoan polyp; Interspecific relationship; Pantopoda; Protonymph.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200319

The expected role of IPBES
Provedor de dados: 49
Autores: Joly,Carlos Alfredo.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100001

Confidencialidade e sigilo profissional em estudos sobre caça
Provedor de dados: 49
Autores: Verdade,Luciano Martins; Seixas,Cristiana Simão.
No Brasil informações sobre atividades ligadas à caça ilegal dificilmente são levantadas em função da falta de um mecanismo legal de confidencialidade e sigilo profissional que assegure ao pesquisador os princípios do direito. Sem isso, tal coleta de dados é passível de ser considerada crime ou cumplicidade criminosa, podendo o pesquisador sofrer as mesmas penalidades legais que os próprios caçadores. Este procedimento é questionável do ponto de vista filosófico, legal e técnico. A sustentabilidade biológica da caça, legal ou ilegal, só poderá ser avaliada por meio de pesquisas sobre o tema, envolvendo coleta de dados. A fim de mudar tal cenário, é necessário que biólogos tenham o direito ao sigilo profissional e à confidencialidade em pesquisas sobre a...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Ética na pesquisa; Direito; Pressão de caça; Biólogos; Caça ilegal.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100002

Turtle ectoparasites from the Pacific coastal region of Colombia
Provedor de dados: 49
Autores: Garcés-Restrepo,Mario Fernando; Giraldo,Alan; Carr,John L.; Brown,Lisa D.
This study provides an update on the ectoparasites (ticks and leeches) associated with Rhinoclemmys annulata and provides new accounts on the ectoparasites associated with R. nasuta, R. melanosterna andKinosternon leucostomum from the Pacific coast of Colombia. The presence ofAmblyomma sabanerae on R. nasuta and R. melanosterna provided two new host records for the tick species. Also, the documentation ofA. sabanerae from the Department of Valle del Cauca represents a new department record for the species in Colombia. Placobdella ringueleti was identified fromR. nasuta and K. leucostomum, which represents a new host record for the leech species, as well as a significant extension of the known range.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tick; Leech; Testudines; Rhinoclemmys annulata; Rhinoclemmys melanosterna; Rhinoclemmys nasuta; Kinosternon leucostomum; Amblyomma sabanerae; Placobdella ringueleti.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300074

Fauna of Leptophlebiidae Banks (Insecta: Ephemeroptera) on fragments of the Atlantic Forest from west region of Santa Catarina State, Brazil
Provedor de dados: 49
Autores: Raimundi,Erikcsen Augusto; Salles,Frederico Falcão; Souza-Franco,Gilza Maria de.
The first studies of Leptophlebiidae in the Santa Catarina State, Southern Brazil, dated from 1920. Since then, not much is known about the family (even to the Order Ephemeroptera) to the State. The main goal of this study was to survey fauna of Leptophlebiidae in the Santa Catarina State based on nymphs. The material was obtained from the collection deposited at the Laboratório de Pesquisa em Ecologia e Química of the Universidade Comunitária da Região de Chapecó, besides additional specimens collected between 2008 and 2009. Occurrences were plotted in the hydrograph map of Santa Catarina State, with one map for each genus. The Leptophlebiidae nymphs were recorded in 26 aquatic environments that included small streams and rivers. We identified 24...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atalophlebiinae; Uruguai River; Brazilian Southern; Nymphal stage; Survey.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400057

Bees (Hymenoptera: Apoidea) and flowers in natural forest patches of southern Pantanal
Provedor de dados: 49
Autores: Boff,Samuel; Araujo,Andréa Cardoso; Pott,Arnildo.
This is the first systematic survey of bees in the Pantanal wetland, Brazil. We recorded bee species and their floral resources within grassland and natural forest edge habitats in the Pantanal. Surveys were conducted during two to four-days per month, for a total of 12 months. Overall, we recorded 56 bee species visiting a total of 63 flowering plants. Asteraceae and Fabaceae presented the highest number of visited species, however Hyptis suaveolens (Lamiaceae) was the plant most visited by different bee species (18). The most generalist native bee was Trigona fuscipennis visiting a total of 17 flowering plant species. Apis mellifera, an exotic bee, visited 27 species. We also report the overlap (37.5%) in the use of floral resources between the exotic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bees; Floral visitors; Forest fragments; Surveys.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400046

Survey of saproxylophagous Melolonthidae (Coleoptera) and some biological aspects in Aquidauana, MS
Provedor de dados: 49
Autores: Garcia,Felix Placência; Rodrigues,Sérgio Roberto; Bagnara,Cristiane Aparecida Constante; Oliveira,Diogo Silva de.
Coleoptera of the family Melolonthidae plays an important role in decomposition and nutrient recycling in the environment, however the information of this group is scarce in Brazil; therefore studies were developed with the objective of understanding the biological aspects of saproxylophagous. The studies were developed in the experimental farm of the State University of Mato Grosso do Sul, in Aquidauana, from March 2011 to April 2012. In a forest fragment of the cerrado, when encountering fallen tree trunks, they were cut into small pieces for extraction and acquisition of immature and adult Melolonthidae. Larvae were taken to the laboratory where they were reared until emergence of adults, obtaining biological and biometric data. A total of 145 larvae...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cetoniinae; Decomposers; Dynastinae; Rutelinae.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300038

Association among wasps' colonies, ants and birds in Central Amazonian
Provedor de dados: 49
Autores: Somavilla,Alexandre; Fernandes,Itanna Oliveira; Oliveira,Marcio Luiz de; Silveira,Orlando Tobias.
Some neotropical vespids are known for their association with other insects and vertebrate taxa. In the present study about the wasp diversity in the Ducke Reserve, Manaus, Brazil five active colonies and an abandoned one of Polybia rejecta, and one active colony of Synoeca virginea were found associated with ant nests of Azteca aff. chartifex (Formicidae). A single colony of Polybia rejecta was found beside nests of Cacicus cela (Passeriformes: Icteridae). These associations appear to be related both to protection of the wasps nests by the ants and the protection of the ants nests by the wasps, as well as to protection of the bird nests by the wasps. The wasps take advantage of the tolerance of the ants, nesting near their colonies to obtain protection,...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Azteca ants; Cacicus cela; Nests; Polybia rejecta; Synoeca virginea.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200308

Seasonal variation of consumption of the species used as fruit source by brown howler monkeys (Alouatta clamitans) in southern Brazil
Provedor de dados: 49
Autores: Santos,Gisele Aparecida da Silva Doratti dos; Bianchini,Edmilson; Reis,Nelio Roberto dos.
Considering the seasonal variation of fruits availability in seasonal semideciduous forests, this study analyzed whether the richness of fruit species exploited by Alouatta clamitans is higher in the rainy period rather than the dry one. Plant species consumed were investigated by visualization and feces analysis, from July 2005 to June 2006, in a seasonal semideciduous forest fragment in Paraná state, Brazil. Ten species of fruits were consumed during the rainy period and 13 during the dry period: three were consumed exclusively during the rainy period; six exclusively during the dry period; and seven in months that covered both dry and rainy periods. The number of fruit species consumed during the rainy period was considerably lower than the expected...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diet; Frugivory; Fruiting phenology; Guariba; Seasonal semideciduous forests.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300148

Anuran diversity (Amphibia, Anura) in a Seasonal Forest fragment in southern Brazil
Provedor de dados: 49
Autores: Bastiani,Veluma Ialú Molinari De; Lucas,Elaine Maria.
The Atlantic Forest is the home to a diverse and threatened fauna of amphibians. However, knowledge on these species is still scarce to many of its ecosystems, such as the Seasonal Forest. This study was aimed at determining the diversity of anurans in Parque Estadual Fritz Plaumann (PEFP), located in the municipality of Concórdia, Santa Catarina, southern Brazil. The PEFP comprises 741 ha, and is the only Conservation Unit of Seasonal Forest in Santa Catarina state. From August 2010 to July 2011 we surveyed frogs fortnightly during four to ten days, from sunset until approximately midnight. Active, audio and visual searches were carried out at breeding sites and favorable areas to meet the species. The sampling effort of the survey was evaluated with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodiversity; Conservation; Frogs; Atlantic Forest; Santa Catarina.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100025

Descrição morfológica para identificação das plântulas de nove espécies lenhosas de uma floresta de restinga
Provedor de dados: 49
Autores: Alves,Maria Claudjane Jerônimo Leite; Lima,Patrícia Barbosa; Lima,Liliane Ferreira; Zickel,Carmen Silvia.
O estágio de plântula é uma importante fase do ciclo vegetal, pois fornece informações relevantes que podem ser utilizadas em estudos taxonômicos e ecológicos. Estudos que enfocam a descrição morfológica revelam caracteres que, muitas vezes tendem a desaparecer ao longo do desenvolvimento do vegetal, mas que podem ser relevantes para a diferenciação dos táxons. Além disso, através da caracterização dos distintos tipos de plântulas presentes nos diferentes ecossistemas é possível inferir sobre a historia evolutiva dos grupos vegetais, servindo também como subsídio para estudos de regeneração. Frente ao exposto, o presente estudo objetiva caracterizar a morfologia das plântulas de nove espécies lenhosas, com cotilédones CHR, com vistas à identificação das...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Espécies nativas; Cotilédones; Eofilos; Floresta Atlântica.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300374

Rubiaceae Juss. de caatinga na APA Serra Branca/Raso da Catarina, Bahia, Brasil
Provedor de dados: 49
Autores: Varjão,Rafaela Ramos; Jardim,Jomar Gomes; Conceição,Adilva de Souza.
O trabalho apresenta um levantamento das espécies encontradas na APA Serra Branca/Raso da Catarina, onde foram catalogadas 21 espécies distribuídas em onze gêneros: Mitracarpus foi o gênero mais representativo com quatro espécies (M. baturitensis, M. longicalyx, M. robustus, M. salzmannianus), seguido de Staelia (S. aurea, S. galioides, S. virgata), Diodella (D. gardneri, D. radula, D. teres), Borreria (B. spinosa, B. verticillata), Cordiera (C. rigida, Cordiera sp.) e Guettarda (G. angelica, G. sericea). Os demais gêneros estão representados por uma espécie cada, Emmeorhiza umbellata, Leptoscela ruellioides, Margaritopsis carrascoana, Richardia grandiflora e Tocoyena formosa. Foram registradas três espécies endêmicas da caatinga: G. angelica, G. sericea e...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversidade; Semiárido; Florística; Taxonomia; Ecorregião.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200105

Fabaceae of the Rio São Francisco River sub-basin, Nova Marilândia, Mato Grosso, Brazil
Provedor de dados: 49
Autores: Silva,Rosilene Rodrigues; Souza-Lima,Eliane Semidei de.
The watershed of the São Francisco River is a large complex of headwaters of the Paraguay River, the main river of the Pantanal Matogrossense. Considering that Fabaceae are pointed out as the main family in floristic composition of various Brazilian biomes, however in some regions of Brazil is still little known upon the taxa, particularly in the Northern part of the Central-West, this study aimed to present a list of taxa occurring in the sub-basin of the São Francisco River, municipality of Nova Marilândia, State of Mato Grosso. For the taxa we give information on habit, vegetation, data on geographic distribution, potential use, successional strategy and dispersal syndrome, to subsidize habitat restoration projects. We recorded a total of 44 taxa,...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Leguminosae; Inga; Neotropical flora; Pantanal; Riparian vegetation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200297

Conhecimento e conservação dos peixes marinhos e estuarinos (Chondrichthyes e Teleostei) da costa norte do Brasil
Provedor de dados: 49
Autores: Marceniuk,Alexandre Pires; Caires,Rodrigo Antunes; Wosiacki,Wolmar Benjamin; Dario,Fabio Di.
The tropical western South Atlantic, which includes a substantial portion of the Brazilian Exclusive Economic Zone, is a region of endemism broadly recognized as being of prime importance for the conservation of the marine biodiversity. The north coast of Brazil, which comprises the states of Amapá, Pará and Maranhão from the mouth of the rio Oiapoque to the mouth of the rio Parnaíba, harbors the largest continuous mangrove in the world, with approximately 8,900 km2. The high discharge of freshwater and continental sediments in the delta of the Amazonas affects the regime of tides, ocean currents, and several oceanographic processes of the north coast, with direct impact on the composition of the biota found in the region. Despite its economic value and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodiversity; Inventory; Natural resources; Zoological collections; Exclusive Economic Zone.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400251

Chave interativa para a identificação das espécies da Aliança Tabebuia (Bignoniaceae) no estado da Bahia, Brasil
Provedor de dados: 49
Autores: Santo,Fabio da Silva do Espírito; Siqueira,Alisson Amorim; Rapini,Alessandro.
Foi elaborada uma chave interativa para a identificação das 26 espécies da Aliança Tabebuia (Bignoniaceae) nativas do estado da Bahia, Brasil. A partir de uma página web, contendo caixas de seleção com caracteres botânicos, de marcação livre e não sequencial, vão se eliminando as espécies que não atendem aos critérios selecionados até a identificação completa do material. A chave está inserida em um site, contendo informações sobre Bignoniaceae, a Aliança Tabebuia e o estado da Bahia, bem como um glossário dos termos botânicos utilizados na chave e um banco de imagens. O sistema foi desenvolvido a partir das linguagens HTML e Javascript, é autoexecutável em CD-ROM e está disponível para download em:...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chave de múltiplo acesso; Ipê; Taxonomia; Tecnologia da informação.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300345

Assemblage of medium and large size mammals in an urban Semideciduous Seasonal Forest fragment in Cerrado biome
Provedor de dados: 49
Autores: Bernardo,Paulo Vitor dos Santos; Melo,Fabiano Rodrigues de.
Nowadays, the processes of deforestation and loss of habitats represent a major threat to many species of mammals. These processes cause changes in natural landscapes by decreasing area, connectivity, and fragment size, and increasing edge effects and number of fragments. Understanding which and how many species persist in disturbed fragments may indicate the species' minimum requirements and might contribute to their conservation. Here we show how the mammalian fauna of medium and large size (higher than 1 kg) are structured in a semideciduous seasonal forest fragment of 36.5 ha in the urban area of Jataí, Goiás. We performed the sampling with 30 sand track plots (1 x 1 m). We analyzed the relative record frequency and built a collector's curve to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Goiás Southwest; Habitat fragmentation; Habitat loss; Mammalian fauna; Urban ecology.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200076

Genetic structure of the ornamental tetra fish species Piabucus melanostomus Holmberg, 1891 (CHARACIDAE, IGUANODECTINAE) in the Brazilian Pantanal wetlands inferred by mitochondrial DNA sequences
Provedor de dados: 49
Autores: Borba,Rafael Splendore de; Silva,Edson Lourenço da; Ponzetto,Josi Margarete; Pozzobon,Allan Pierre Bonetti; Centofante,Liano; Alves,Anderson Luis; Parise-Maltempi,Patrícia Pasquali.
The subfamily Iguanodectinae comprises a group of small Neotropical fishes composed by two genera and 11 nominal species widely distributed in the Atlantic drainages of South America. Piabucus is the only genus of Iguanodectinae found in the Paraguay River basin, especially in the Pantanal of Mato Grosso State, where it is represented by Piabucus melanostomus. Given the wide distribution and the low dispersion capacity of this species, due the ecological constraints, it is possible that many interesting genetic features could be found in different populations. In this way, the aim of his work was to perform the phylogeographic pattern of P. melanostomus populations using mitochondrial DNA sequences. A total of 13 individuals from three rivers belonging the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Flood pulse; Genetic diversity; Gene flow; Haplotypes.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100004

Length-weight relationships of the ichthyofauna associated with the Brazilian sardine, Sardinella brasiliensis, on the Southeastern Brazilian Bight (22°S-29°S) between 2008 and 2010
Provedor de dados: 49
Autores: Vaz-dos-Santos,André Martins; Rossi-Wongtschowski,Carmen Lúcia Del Bianco.
In this study, estimates of length-weight relationships are presented for twenty-four species caught in association with the Brazilian sardine, Sardinella brasiliensis, during four acoustics surveys carried out under the Program ECOSAR (Prospecting and evaluation of biomass of the stock of Brazilian sardine on the southeast coast by acoustic methods), which was to evaluate the biomass of species that were caught. The model parameters were estimated with the nonlinear iterative method of least squares. The value of the coefficient of determination (r2) and residual analysis were employed to verify the appropriateness of fit. The coefficient b values were tested with respect to isometry (β=3) using a tα1,0.05 test. The values of coefficient b ranged from...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Relative growth; Allometric model; Pelagic and demersal fishes.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200326

Thrips species (Insecta: Thysanoptera) associated to Cowpea in Piauí, Brazil
Provedor de dados: 49
Autores: Lima,Élison Fabrício Bezerra; Fontes,Lúcia da Silva; Pinent,Silvia Marisa Jesien; Reis,Adriana Saraiva dos; Freire Filho,Francisco Rodrigues; Lopes,Angela Celis de Almeida.
Thrips are still poorly known in cowpea, Vigna unguiculata (L.) Walp., in Piauí, despite their economic importance in this crop, which stands out as one of the major cultures of North and Northeast regions from Brazil. Thus, this study aimed to identify the thrips species associated to the crop in Teresina and Bom Jesus, Piauí, Brazil. From October 2007 to August 2008, cowpea inflorescences were sampled in the municipalities by the technique of simple bagging. After screenings, thrips were preserved in AGA, mounted on permanent microscope slides and identified. The identified species were: Frankliniella brevicaulis Hood, 1937, F. insularis (Franklin, 1908), F. schultzei (Trybom, 1910), F. tritici (Fitch, 1855) and Haplothrips gowdeyi (Franklin, 1908). The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pests; Phlaeothripidae; Thripidae; Frankliniella; Vigna unguiculata.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100043

Tree mortality, recruitment and growth in a bamboo dominated forest fragment in southwestern Amazonia, Brazil
Provedor de dados: 49
Autores: Medeiros,Herison; Castro,Wendeson; Salimon,Cleber Ibraim; Silva,Izaias Brasil da; Silveira,Marcos.
Forest fragmentation affects the structure and dynamics of plant communities, leading to biodiversity loss in forest remnants. In this paper we show that in a bamboo (Guadua weberbaueri Pilger) dominated forest fragment in southwestern Amazonia edge effect may be confounded by bamboo effect, which also occur inside the forest. We measured growth, mortality and, recruitment rate of trees with DBH ≥ 10 cm, in a fragment of bamboo dominated open forest in southwestern Amazonia, state of Acre, Brazil, in 15 plots at the forest edge and 15 plots inside the forest fragment, 500 m away from the border. Time interval between censuses was 1.8 years. The average diameter growth rate differed significantly between edge (3.82 ± 0.10 mm a-1) and interior (2.39 ± 0.18...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Forest fragmentation; Edge effect; Open forest with bamboo; Plant communities; Forest succession; Tropical forest dynamic.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200029

The invertebrate's community in adjacent Alto Iguaçu's anthropic lakes of different environmental factors
Provedor de dados: 49
Autores: Krawczyk,Ana Carolina de Deus Bueno; Baldan,Lucíola Thais; Aranha,José Marcelo Rocha; Menezes,Márcia Santos de; Almeida,Cyntia Vilasboas.
Environmental differences occur between lentic and lotic communities' establishment, especially because of water time residence. Here we used a combination of field measurements and statistical analysis to evaluate the influent factors on the aquatic macroinvertebrates' composition and structure in 15 anthropogenic lakes from Alto Iguaçu's region. Macroinvertebrates were sampled from the marginal vegetation (with or without macrophytes) and sediment. Chemical parameters ranged among the anthropogenic lakes, mainly those which are connected to the Iguaçu River, beyond the presence or absence of macrophytes, interfering on the community's structure. Lake's morphometric data were measured in each lake and its relation to community was tested. The community...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Freshwater invertebrates; Iguaçu River; Productivity; Macrophytes; Tropical lakes.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100005

New records of the southern naked-tailed armadillo Cabassous unicinctus unicinctus Linnaeus, 1758 (Cingulata: Dasypodidae) in Brazil
Provedor de dados: 49
Autores: Anacleto,Teresa Cristina da Silveira; Godoy,Leandro Perez; Tubelis,Darius Pukenis.
The geographic distribution of Cabassous unicinctus is poorly known due to the low number of available records. Two subspecies with distributions limited by the Amazonas River were recognized in 1980. Cabassous u. unicinctus has been found north of this river, while C. u. squamicaudis occurs in areas south of the river. This study aimed to update the distribution records of C. u. unicinctus in Brazil. We compiled records from literature, museum collections and field studies. New records of this subspecies were obtained from the Brazilian states of Acre, Pará, Rondônia and Mato Grosso. These records enlarge a geographic distribution of C. u. unicinctus to Amazonian and Cerrado biomes, regions located south of the Amazon River.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Xenarthra; Geographic distribution; Armadillo; Amazonas; Cerrado; Mato Grosso.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200293

First report of Exomalopsis fulvofasciata (Hymenoptera: Anthophoridae) as host of two Timulla species (Hymenoptera: Mutillidae)
Provedor de dados: 49
Autores: Aranda,Rodrigo; Graciolli,Gustavo.
Two species of Timulla Ashmead that parasitize nests of Exomalopsis fulvofasciata (Hymenoptera: Apidae) in riparian vegetation in the Miranda Pantanal, Mato Grosso do Sul, Brazil were recorded. Also, the behavior of Timulla species, and first report of T. intermissa in the Brazilian Pantanal was reported.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Parasitoidism; Pantanal; Host report; Velvet ant; Mutillini.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400382

Assembleia de aves na área urbana do município de Pelotas, Rio Grande do Sul, Brasil
Provedor de dados: 49
Autores: Sacco,Anne Gomes; Bergmann,Fabiane Borba; Rui,Ana Maria.
A urbanização altera a composição e diversidade das comunidades bióticas. Os objetivos do trabalho são apresentar a lista de espécies de aves que utilizam a área urbana do município de Pelotas (RS), no extremo sul do Brasil, e descrever a estrutura da assembleia com ênfase na riqueza, composição e abundância relativa de espécies e suas variações sazonais. A coleta de dados ocorreu entre outubro de 2007 e setembro de 2008, em 216 pontos fixos de observação distribuídos em grupos de seis pontos em ruas com todos os graus de urbanização, que foram amostrados uma vez por estação. O observador permaneceu oito minutos em cada um dos pontos, o que resultou no esforço amostral de 28,8 horas em cada estação e 115,2 horas no ano. Foram registrados 9.595 contatos de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abundância relativa; Bioma Pampa; Riqueza; Sazonalidade; Urbanização.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200153

Checklist of the Bromeliaceae from Pedra dos Pontões, Mimoso do Sul, Espírito Santo, Brazil, with four first records for the state
Provedor de dados: 49
Autores: Couto,Dayvid Rodrigues; Manhães,Vitor da Cunha; Favoreto,Fernanda Campanharo; Faria,Ana Paula Gelli de.
Bromeliaceae is one of the most relevant taxonomic groups of the Atlantic Forest, where the Brazilian southeastern region stands out as a center of diversity and endemism for many taxa of the family. We present a checklist of the 12 genera and 44 species of Bromeliaceae from the Pedra dos Pontões, in Mimoso do Sul municipality, Espírito Santo state, southeastern Brazil. The Bromelioideae (22 species) was the subfamily with most taxonomic diversity, followed by Tillandsioideae (18 species) and Pitcairnioideae (four species). We also report the first occurrence of four species (A. squarrosa, N. antoineanum, V. pseudoatra and V. pardalina) for the Espírito Santo state. Almost half of the taxa surveyed inhabit exclusively the vegetation associated to the rocky...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic Forest; Bromeliads; Conservation; Rocky outcrops; Taxonomy.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400113

Ecology and diversity of a lizard community in the semiarid region of Brazil
Provedor de dados: 49
Autores: Andrade,Maria Jaqueline Monte de; Sales,Raul Fernandes Dantas; Freire,Eliza Maria Xavier.
Composition, species diversity and resource usage in terms of space and time were evaluated for the lizard community of the Ecological Station of the Seridó (ESEC Seridó), Rio Grande do Norte. An observation area of 150 m × 150 m (2.25 ha) was delimited and surveyed monthly in alternate turns (morning, afternoon and night) for three consecutive days from April to October 2011, covering dry and rainy seasons. Fourteen species belonging to eight families were recorded, being Tropidurus semitaeniatus the most abundant. Seasonality influenced species richness and abundance. Regarding habitat usage, Lygodactylus klugei was the most generalist species, whilePhyllopezus periosus, P. pollicaris and T. semitaeniatus were specialists, showing affinity for rocky...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Caatinga; Activity periods; Habitat use; Microhabitat use; Richness; Seasonality.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300199

Gerenciamento de dados marinhos no contexto brasileiro
Provedor de dados: 49
Autores: Conti,Luis Américo; Oliveira,Mariana Cabral de; Estrada,Tiago Egger Moellwald Duque; Marques,Antônio Carlos.
Em um contexto de franco crescimento de demanda e produção de conhecimento técnico e cientifico a respeito de parâmetros bióticos e abióticos de ambientes marinhos e costeiros, a concepção de programas de desenvolvimento de bancos de dados e geo-portais de disseminação de informação torna-se imperativa. Embora apenas esforços pontuais tenham sido propostos nos últimos anos, a criação de bases de dados de acesso mais amplo parece inevitável tendo em vista as peculiaridades práticas de aquisição e processamento de dados marinhos: caros, complexos e dinâmicos. Este trabalho pretende abordar tal questão contextualizando as necessidades e demandas para projetos desta natureza, focando aspectos teóricos e práticos da implementação de modelos de dados marinhos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ambiente marinho e costeiro; Banco de dados; Geoportais; Mapeamento de habitats.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200021

A feeding association between Wilson's Storm-petrels Oceanites oceanicus (Kuhl, 1820) and Rough-toothed Dolphins Steno bredanensis (G. Cuvier in Lesson, 1828)
Provedor de dados: 49
Autores: Olmos,Fábio; Rotenberg,Elsie; Muscat,Edelcio.
On 06 October 2012 a pod of Rough-toothed Dolphins Steno bredanensis (Delphinidae) was observed catching and tearing apart several Castin Leatherjacks Oligoplites saliens (Carangidae) near Montão de Trigo Island, northern coast of São Paulo, Brazil. The resulting floating masses of viscera attracted a feeding aggregation of 120-150 Wilson's Storm-petrels Oceanites oceanicus (Hydrobatidae), a transequatorial migrant passing through the area during October. This interspecific association has not been recorded before, although it could be expected given that S. bredanensis feeds on large fish and O. oceanicus is a known scavenger of kills made by cetaceans such as Killer Whales.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Behaviour; Brazil; Feeding association; Kleptoparasitism; Oceanites oceanicus; Steno bredanensis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200303

Description of diet of pelagic fish in the southwestern Atlantic, Brazil
Provedor de dados: 49
Autores: Gorni,Guilherme Rossi; Goitein,Roberto; Amorim,Alberto Ferreira de.
This study reveals the food composition of pelagic fishes living in the southwestern Atlantic Ocean. As such more common pelagic species are considered to be top predators, the study proposes to know what constitutes their main food. Fish are not commonly found within their stomach contents, but instead, cephalopods are their most common food. As can be observed, Teuthida cephalopods compose their principal diet. The stomach contents of specimens of Xiphias gladius, Thunnus albacares, T. obesus, T. alalunga, Isurus oxyrinchus and Alopias superciliosus caught during July 2007 to June 2009 by using tuna longliners were studied. Teuthida cephalopods constitute the main food item for the three tuna species, while X. gladius feeds mainly on Ommastrephidae...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Top predators; Diet composition; Longline fishery; Stomach content analysis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100006

Ictiofauna acompanhante na pesca artesanal do camarão sete-barbas (Xiphopenaeus kroyeri) no litoral sul do Brasil
Provedor de dados: 49
Autores: Sedrez,Mário Cesar; Branco,Joaquim Olinto; Freitas Júnior,Felipe; Monteiro,Herbert Silva; Barbieri,Edison.
A pesca artesanal dirigida ao camarão sete-barbas (Xiphopenaeus kroyeri), usando o método de arrasto motorizado com portas, tem sido praticada na costa de Santa Catarina, onde ele gera emprego e renda, e ajuda a manter a tradição cultural tradicional açoriana viva, desde 1960. Com o objectivo de analisar a qualidade e a quantidade das capturas acidentais da ictiofauna, efetuou-se sazonalmente, dois arrastos por isóbata (10-20‑30 m) entre novembro/2009 e agosto/2010, duração de 20 min/cada, velocidade média dois nós e, registrados temperaturas e salinidades da água de fundo. As capturas totalizaram 10868 peixe (208.34 kg), distribuídos em 31 famílias e 62 espécies, com uma proporção de peixe/camarão de 5,19/1 kg. A família mais abundante foi Sciaenidae...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Xiphopenaeus kroyeri; Peixes demersais; Impactos da pesca; Pesca de arrasto; Porto Belo.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100019

Variation in the diet of the lizard Tropidurus torquatus along its coastal range in Brazil
Provedor de dados: 49
Autores: Siqueira,Carla Costa; Kiefer,Mara Cíntia; Sluys,Monique Van; Rocha,Carlos Frederico Duarte.
The diet composition of lizards of a given species may vary among different populations. The feeding ecology of the tropidurid lizard Tropidurus torquatus was studied in 10 coastal areas in Brazil in order to detect to what extent the diet varies along its geographic range. A non-metric multidimensional scaling technique revealed three groups of localities according to the diet composition: one characterized by a relatively high consumption of Isoptera, one characterized by a relatively high proportion of plant matter, and one in which there was a great importance of Formicidae. We found a weak pattern of latitudinal differences in restingas regarding the general consumption of items by T. torquatus, probably because this is a generalist and opportunistic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Geographic variation; Feeding ecology; Restinga habitat; Tropical lizard; Tropiduridae.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300093

Nidification of Polybia rejecta (Hymenoptera: Vespidae) associated to Azteca chartifex (Hymenoptera: Formicidae) in a fragment of Atlantic Forest, in the state of Minas Gerais, southeastern Brazil
Provedor de dados: 49
Autores: Souza,Marcos Magalhães de; Pires,Epifânio Porfiro; Prezoto,Fábio.
Records to nesting between associated social wasp Polybia rejecta(Fabricius, 1798) and the ant Azteca chartifex Forel, 1896 in the Parque Estadual do Rio Doce, Minas Gerais, are reported. This association is reported for the first time in this biome. Twelve colonies of P. rejecta founded close to nests of A. chartifex were observed. The wasp colonies were founded at a distance of about 10-20 cm from the ant nest and they did not overlap. The nests of wasps were smaller compared to ant, but the coloring was similar protective casing, making it difficult to differentiate between the wasp nest and the ant.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Interaction; Social wasp; Ant; Atlantic Forest; Colonies.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300390

Flagging a species as threatened: the case of Eptesicus taddeii, an endemic bat from the Brazilian Atlantic Forest
Provedor de dados: 49
Autores: Bernard,Enrico; Nascimento,Jorge Luiz do; Aguiar,Ludmilla Moura de Souza.
The IUCN Red List is an important conservation tool. Although its criteria are used worldwide, in most cases the classification process per se is restricted to a group of experts with restricted or no participation of the general public. This may raise concerns from final Red List users, which, without knowing the data or procedures adopted by the experts, may argue on the outcomes, final classification adopted, or the overall use of the lists. IUCN recommends that all assessments must be backed up by data and justifications, making them as accurate and transparent as possible. We describe here the assessment of Eptesicus taddeii, a bat species endemic to the southern Atlantic Forest of Brazil, indicating how and why the species was flagged as Vulnerable -...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Chiroptera; Conservation policy; Endangered species; IUCN; Red List.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200314

Morphological aspects of the testes of 18 species of terrestrial of Heteroptera from Northwestern São Paulo (Brazil)
Provedor de dados: 49
Autores: Gomes,Mariana Oliveira; Castanhole,Márcia Maria Urbanin; Souza,Hederson Vinicius de; Murakami,Aline Sumitani; Firmino,Tatiani Seni de Souza; Saran,Priscila Samara; Banho,Cecilia Artico; Monteiro,Leticia da Silva; Silva,Jocielly Cristina Pereira da; Itoyama,Mary Massumi.
The Heteroptera are known for their odour, for being pests or for being disease carriers. However, they are still not extensively studied, perhaps because they form a very large group. Therefore, with the aim of enhancing the knowledge of the morphology of the testes of this insect order, we collected and analysed 18 species of terrestrial Heteroptera from the northwestern part of São Paulo. The analysis of these species revealed some differences between the testicles of these species, including their shape (elongated, oval, round or pecten), the morphology of the testicular lobes (elongated and paired side by side or united in a single region), the colours of the peritoneal sheath that surrounds the lobes (red, orange, yellow or translucent), and the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Testicles; Peritoneal sheath; Lobes.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300131

First record of Tigrisoma fasciatum (Such, 1825) (Aves: Ardeidae) in the State of Amapá, Brazil and updated species distribution in Central and South America
Provedor de dados: 49
Autores: Kajiki,Lia Nahomi; Togura,Cintia Massumi; Michalski,Fernanda.
The Fasciated Tiger-heron (Tigrisoma fasciatum) is considered endangered in Brazil and Argentina. Although this species has a large range in Central and South America, its records are scattered and scarce. We used a combination of searches in the scientific literature and new field records to provide an updated distributional range of this species. Searches for records and photos of T. fasciatum were conducted using online databases. We also conducted field surveys along the margins of the Araguari and Falsino rivers, in the National Forest of Amapá, a sustainable protected area in the eastern Brazilian Amazon. Our literature review provided a total of 25 new distributional records of T. fasciatum. During our river based surveys we recorded one individual...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avifauna; Amazon region; Range extension; FLONA-AP; Protected areas.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400385

Thrips species (Insecta: Thysanoptera) associated to Fabaceae of agricultural importance in Cerrado and Amazon-Caatinga ecotone from Brazilian Mid-North
Provedor de dados: 49
Autores: Lima,Élison Fabrício Bezerra; Monteiro,Renata Chiarini; Zucchi,Roberto Antonio.
Little is known about the Thysanoptera fauna from Brazilian Mid-North. In spite of being a region with at least three biomes and some ecotones, the studies on this insect order in the region are related to associations to a few cultivated plant species. On Fabaceae, plant family with the second largest number of records of thrips species associated in Brazil and huge economic importance for Mid-North, there are thrips records only on cowpea (Vigna unguiculata (L.) Walp.). Due to the lack of knowledge on the Thysanoptera fauna in such a diverse area and the importance of crops of this family in the region, this research aimed to survey the thrips species associated to Fabaceae of agricultural importance in areas of Cerrado and Amazon-Caatinga ecotone in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Identification; Thrips diversity; Fabaceous; Host association; Damages.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200283

Spatio-temporal distribution of fish larvae in relation to ontogeny and water quality in the oligohaline zone of a North Brazilian estuary
Provedor de dados: 49
Autores: Sarpedonti,Valérie; Anunciação,Érica Moema Silva da; Bordalo,Adriana Oliveira.
Larval fish assemblage in Guajará Bay was studied through four quarterly field campaigns and discussed in relation to individuals' development stages and exposure to contaminants poured out by the Pará State Capital City, Belém. Larval densities were low and diversity extremely poor with a strong dominance of clupeids, engraulids and, to a lower extent, sciaenids. The main spawning season was registered at the onset of the rainy period. Pre-flexion and flexion clupeiforms remained in the farmost stations from the city while post-flexion larvae were found near urban activity centres. Unlikely, pre-flexion and flexion sciaenids were scattered along the city waterfront. Post-flexion larvae were rare; it is suggested that sciaenids use the bay as a transitory...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ichthyoplankton; Amazon; Urban impact; Belém.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300055

Diversidade florística de Rubiaceae na Serra da Fumaça – complexo de Serras da Jacobina, Bahia, Brasil
Provedor de dados: 49
Autores: Sousa,Luzicléia Araújo; Bautista,Hortensia Pousada; Jardim,Jomar Gomes.
Este trabalho consiste no levantamento das espécies de Rubiaceae encontradas na Serra da Fumaça - complexo de Serras da Jacobina, Bahia. No período de junho de 2011 a agosto de 2012 foram realizadas coletas mensais de material botânico ao longo de trilhas e no interior da floresta contemplando todas as fitofisionomias existentes na área. Foram registradas 36 espécies distribuídas em 20 gêneros. Os gêneros mais representativos em número de espécies foram Borreria G.Mey. (5 spp.), Diodella Small, Mitracarpus Zucc. exSchult. &amp; Schult.f. e Psychotria L. (3 spp. cada), seguidas porCoccocypselum P.Browne, Declieuxia Kunth,Palicourea Aubl., Perama Aubl., Richardia L. eStaelia Cham. &amp; Schltdl. (2 spp. cada). Os demais gêneros foram representandos por...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Taxonomia; Caatinga; Campo rupestre; Floresta estacional; Chapada Diamantina.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300289

Sapindaceae do noroeste paulista: lista de espécies e chave de identificação baseada em caracteres vegetativos
Provedor de dados: 49
Autores: Sprengel-Lima,Caroline; Rezende,Andréia Alves.
A identificação de espécies geralmente é um obstáculo para estudos de conservação e manejo. As espécies de Sapindaceae particularmente são de difícil identificação, sendo o fruto uma característica importante na definição de gêneros e espécies. Dada à dificuldade de encontrar material fértil em determinadas épocas do ano, o objetivo deste estudo foi levantar as espécies de Sapindaceae do noroeste paulista e elaborar uma chave de identificação baseada em características morfológicas vegetativas, tais como a forma e o número de folíolos, o número de feixes no corpo lenhoso para as espécies de liana, a presença ou a ausência de domácias, tipo de indumento, entre outras. Neste estudo foram levantadas as espécies de Sapindaceae presentes em 18 fragmentos de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Florística; Lianas; Árvores.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200270

New records and checklist of aquatic and semi-aquatic Heteroptera (Insecta: Hemiptera: Gerromorpha and Nepomorpha) from the Southern region of Mato Grosso do Sul, Brazil
Provedor de dados: 49
Autores: Floriano,Carla Fernanda Burguez; Oliveira,Iana Aparecida Dalla Valle; Melo,Alan Lane de.
A list of aquatic and semi-aquatic Heteroptera species from the southern region of Mato Grosso do Sul State is presented. The material was collected between 2008 and 2009. Samples were obtained from 10 streams (Água Boa, Cerro Verde, Cumprida, Ponte, Doradão, Guaçú, Guaporites, Nhu-Verá, Perobão and Santa Maria), one river (Iguatemi River) and nine ponds (Bacal, Balan, Ponte, Cinco, Macrófitas, Bugão, Sítio, Cascalho, and Oxbow). A total of 63 aquatic and semi-aquatic species of Heteroptera were recorded, of which 32 are new records.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Water-bug; Aquatic insects; Iguatemi River.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100022

Chironomus amissum sp. n. (Diptera, Chironomidae) from southeastern Brazil
Provedor de dados: 49
Autores: Correia,Leny Célia da Silva; Trivinho-Strixino,Susana; Michailova,Paraskeva.
The paper presents a description of larva, pupa, imago (male) and karyotype of Chironomus amissum from southeastern Brazil. It belongs to pseudothummi cytocomplex with 2n=8 and chromosome arm combinations: AE BF CD G. Several fixed homozygous inversions distinguished arm A of the new species from that of Chironomus columbiensis Wülker et al. 1989 and Chironomus anonymus Williston, 1896. One homozygous inversion of arm F differentiated it from C. anonymus. Species-specific characters were presented in the larva, pupa and imago.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chironomus amissum sp. n.; Morphology; Karyology; Chironomidae; Diptera; Brazil.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400133

O gênero Mimosa L. (Leguminosae: Mimosoideae) na APA Serra Branca/Raso da Catarina, Bahia, Brasil
Provedor de dados: 49
Autores: Dourado,Diego Augusto Oliveira; Conceição,Adilva de Souza; Santos-Silva,Juliana.
This work consists of a floristic survey of the genus Mimosa L. in APA Serra Branca/Raso da Catarina, located in Jeremoabo, Bahia, Brazil. We analyzed specimens collected from June/2010 to October/2011 and collections deposited in the ALCB, HRB, HUEFS, and MBM herbaria. We registered 11 species distributed in two sections: Mimosa sect. Batocaulon DC. (Mimosa acutistipula (Mart.) Benth. var.acutistipula, M. adenophylla var. mitis Barneby, M. arenosa (Willd.) Poir. var. arenosa, M. caesalpiniifolia Benth., M. lewisii Barneby, M. misera Benth., M. piscatorum Barneby, M. quadrivalvis var. leptocarpa (DC.) Barneby, and M. tenuiflora (Willd.) Poir.) and Mimosa sect. Mimosa (M. pudica var. tetrandra (Humb. &amp; Bonpl. ex Willd.) DC. And M. sensitive L. var....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Caatinga; Diversity; Floristic; Jeremoabo; Semiarid.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400225

Nest architecture of the stingless bee Geotrigona subterranea (Friese,1901) (Hymenoptera: Apidae: Meliponini)
Provedor de dados: 49
Autores: Barbosa,Fernando Mendes; Alves,Rogério Marcos de Oliveira; Souza,Bruno de Almeida; Carvalho,Carlos Alfredo Lopes de.
We located ten nests of Geotrigona subterranea in the transition area between Cerrado and Caatinga within the municipalities of Lontra and Januária, state of Minas Gerais, southeastern Brazil. We collected the nests to study their architecture in detail. In the present paper, we describe the general nest structure of this bee species in terms of: number, shape and area of the combs; size of the brood cells; size of honey and pollen pots; volume of honey and mass of pollen stored in closed pots; presence of inquiline species; and defensive characteristics. All nests were found in subterranean cavities. The nest structure of G. subterranea is similar to that of other congeneric species.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bionomy; Nesting; Stingless bee; Mombuca bee.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100017

Fauna de formigas (Hymenoptera: Formicidae) atraídas a armadilhas subterrâneas em áreas de Mata Atlântica
Provedor de dados: 49
Autores: Figueiredo,Carmen Júlia d; Silva,Rogério Rosa da; Munhae,Catarina de Bortoli; Morini,Maria Santina de Castro.
Este estudo teve como objetivo avaliar a composição da fauna de formigas que forrageia abaixo da superfície do solo de áreas de Floresta Atlântica em estágio avançado de regeneração. Foram estudadas duas áreas similares em relação às características abióticas do solo, sendo uma localizada na Serra do Mar e a outra na Serra do Itapeti, ambas no Estado de São Paulo, Brasil. Em cada área foram distribuídos, a cada dois meses, 20 conjuntos de três armadilhas subterrâneas, contendo iscas atrativas, em buracos de 30 cm de profundidade, e equidistantes 20 m um do outro. As armadilhas permaneceram no campo por 24 horas. Foram registradas no total sete subfamílias, 16 gêneros e 42 morfoespécies/espécies. Três destas espécies, Acanthostichus quadratus, Labidus...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Riqueza; Nova espécie; Variação sazonal; Comunidades; Formigas hipogeicas.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100020

Herpetofauna da floresta do baixo rio Moa em Cruzeiro do Sul, Acre - Brasil
Provedor de dados: 49
Autores: Bernarde,Paulo Sérgio; Albuquerque,Saymon de; Miranda,Daniele Bazzo de; Turci,Luiz Carlos Batista.
O presente trabalho tem como objetivo apresentar o resultado de um levantamento herpetofaunístico realizado na floresta do baixo rio Moa, em Cruzeiro do Sul, Acre. O estudo foi realizado entre fevereiro de 2008 e setembro de 2009, sendo as espécies registradas através de armadilhas de interceptação e queda (AIQ), procura limita por tempo (PLT), busca ativa (BA), amostragem em sítios reprodutivos (ASR) e encontros ocasionais (EO). A herpetofauna foi amostrada em uma área de aproximadamente 256 hectares em áreas de propriedades particulares, incluindo área aberta antropizada, adjacente a floresta, composta principalmente por pastagens. Na área florestada a amostragem foi realizada em duas trilhas com fisionomias diferentes (Mata de Terra Firme e Mata de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazônia; Amphibia; Reptilia; Anura; Squamata.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100023

Pequenos mamíferos não-voadores (Didelphimorphia, Rodentia) em campos litorâneos do extremo sul do Brasil
Provedor de dados: 49
Autores: Quintela,Fernando Marques; Gonçalves,Bruno Igure; Trindade,Gabriel Eberts; Santos,Maurício Beux dos; Tozetti,Alexandro Marques.
Non-volant small mammals are key elements in natural environments due its importance as food resource. This study aimed to investigate the species composition and habitat occupancy by non-volant small mammals (Didelphimorphia, Rodentia) in a coastal grassland area in southern Rio Grande do Sul coastal plain. Between April 2009 and March 2010 pitffal traps were used to capture small mammals in coastal grasslands associated to sand dunes and arbustive Restinga. We sampled 180 individuals including two marsupials (Cryptonanus guahybae and Didelphis albiventris) and seven rodent species (Calomys laucha, Cavia aperea, Ctenomys flamarioni, Deltamys kempi, Oligoryzomys flavescens, Oxymycterus nasutus and Scapteromys tumidus). Cryptonanus guahybae, D. albiventris...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coastal environments; Marsupials; Rodents; Calomys laucha; Oligoryzomys flavescens; Assemblage.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400284

Predation effects of Melanoides tuberculatus Müller 1774) on periphytic biofilm colonization: an experimental approach
Provedor de dados: 49
Autores: Vasconcelos,Janiele França; Barbosa,José Etham de Lucena; Azevêdo,Evaldo de Lira; Azevêdo,Daniele Jovem da Silva; Anacleto,Maria José Pinheiro.
The present study evaluated the predation effects of the gastropod Melanoides tuberculatus on the taxa richness and density of the periphyton community. A laboratory experiment was conducted with two treatments: control (without M. tuberculatus) and with M. tuberculatus, each treatment being replicated four times. For periphyton colonization, glass slides were placed in 3.5 L of water from the environment of the gastropods. The analysis of species richness and density of the periphyton community on these artificial substrates showed significant differences (p &lt;0.05) between treatments. In the treatment with M. tuberculatus, taxa richness and density were lower, with a predominance of Chantrasia macrospora in the last days of the experiment. It follows...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Invasive species; Herbivory; Laboratory experiment; Melanoides tuberculatus; Periphyton.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200096

Habitat, redescription and distribution of Latrodectus geometricus in Uruguay (Araneae: Theridiidae)
Provedor de dados: 49
Autores: Simó,Miguel; Dias,María de Fátima da Rocha; Jorge,Carolina; Castro,Manuel; Dias,Marcelo Alves; Laborda,Álvaro.
This study provides the first accurate records of Latrodectus geometricus C. L. Koch, 1841 for Uruguay and extends the known distribution of this species to the Southeastern region of South America. Data and figures of the genitalic morphology for the recognition of the species and natural history in this country are indicated. In Uruguay L. geometricus was mainly restricted to urban areas at the west of this country and it is associated with locations with high human activity.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brown widow; Spider; Invasive alien species; Latrodectinae.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100040

Amphibians of the state of Piauí, Northeastern Brazil: a preliminary assessment
Provedor de dados: 49
Autores: Roberto,Igor Joventino; Ribeiro,Samuel Cardozo; Loebmann,Daniel.
The state of Piauí is located between the Caatinga and Cerrado biomes in Northeastern Brazil, having a rich heterogeneity of habitats. However, publications regarding the amphibians of this state are scarce. We compiled literature data and complemented it with amphibian inventories in some municipalities of Piauí and present a list of 55 species (54 anurans and one caecilian). Ten of them are endemic to the Cerrado biome (Rhinella veredas, R. cerradensis, R. mirandaribeiroi, R. rubescens, Dendropsophus rubicundulus, Phyllomeduza azurea, Leptodactylus pustulatus, Eupemphix nattereri, Physalaemus centralis, and Proceratophrys goyana) and two endemic to the Caatinga (Rhinella jimi and Ceratophrys joazeirensis). We also present data about species richness of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amphibia; Cerrado; Caatinga; Distributional patterns; Conservation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100031

Composição, riqueza e abundância de anuros em um remanescente de Cerrado e Mata Atlântica no estado de São Paulo
Provedor de dados: 49
Autores: Araujo,Cybele de Oliveira; Almeida-Santos,Selma Maria de.
Apesar da fauna de anuros no estado de São Paulo ser considerada a mais conhecida no país, ainda existem consideráveis lacunas amostrais no estado, sobretudo em remanescentes de vegetação natural das bacias hidrográficas do rio Paranapanema. Neste contexto, o objetivo deste estudo foi gerar informações sobre a composição, riqueza e abundância de anuros na Estação Ecológica de Angatuba, um remanescente de Cerrado e Mata Atlântica presente na bacia hidrográfica do Alto Paranapanema. O levantamento das espécies foi realizado em duas etapas de campo: março e novembro de 2007 e outubro de 2008 a março de 2009, totalizando 38 dias de inventário. A amostragem foi realizada por meio de armadilhas de interceptação e queda, encontro ocasional, procura auditiva e...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anfíbios; Anura; Diversidade; Inventário; Estação Ecológica de Angatuba.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100026

Gall-inducing insects from Serra do Cabral, Minas Gerais, Brazil
Provedor de dados: 49
Autores: Coelho,Marcel Serra; Carneiro,Marco Antônio Alves; Branco,Cristina Alves; Fernandes,Geraldo Wilson.
Our goal was describe the gall richness through the characterization of their external shapes and occurrence patterns in their host plants from Parque Estadual da Serra do Cabral. In a universe of 34 families, 64 genera and 89 plant species, 47 gall-inducing insects in 21 families, 32 genera and 39 host plant species were recorded. The families, which hosted higher gall richness, were those with highest abundance. Asteraceae represented 33% of the species collected followed by Malpighiaceae 8% and Fabaceae 8%, each one concentrating 25%, 19% and 8% of gall-inducing insects, respectively. The organ most attacked was the leaf (51%), followed by the stem (42%) and the terminal branch (4%). Ninety-six percent (96%) of galls were glabrous. Only 25.5% of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodiversity; Biogeography; Herbivore; Host plant; Insect-plant interaction.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300102

Identificação das espécies brasileiras de Akodon (Rodentia: Cricetidae: Sigmodontinae) através da microestrutura dos pelos
Provedor de dados: 49
Autores: Silveira,Fabiana; Sbalqueiro,Ives José; Monteiro-Filho,Emygdio Leite de Araujo.
No Brasil há 10 espécies de Akodon Meyen, 1833 e a maioria apresenta algum grau de sobreposição geográfica havendo inclusive registros de simpatia. A identificação das espécies é difícil e pode ser feita pela análise da estrutura morfológica de pelos. Assim, para a identificação da microestrutura de pelos de nove espécies brasileiras de Akodon, foram utilizados pelos-guardas primários de amostras de coleções zoológicas. Foi adotado o método de análise das escamas cuticulares e da medula. O padrão de cutícula para todas as espécies foi folidáceo estreito. Já para a medula foram reconhecidos três padrões básicos como multisseriada alveolar, multisseriada listrada e misto de alveolar e listrada. Akodon cursor é a única espécie com predomínio de quatro...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Roedores; Escamas cuticulares; Pelos-guarda; Morfologia; Medula.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100033

Jururumberus, a new genus of Orthocladiinae (Diptera: Chironomidae) from Brazil
Provedor de dados: 49
Autores: Mendes,Humberto Fonseca; Andersen,Trond.
Jururumberus n. gen. is erected based on the males of J. arapuca n. sp. from São Paulo State, in southeastern Brazil and J. uatuma n. sp. from the Amazonas in northern Brazil. The genus can be separated from other Orthocladiinae based on the combination of bare eyes, wing, and squama; frons U-shaped, extended ventrally; AR ≤ 0.3, antenna without apical seta; palp short, five-segmented, with sensilla clavata in subapical sensillum coeloconicum; no acrostichals; costa strongly extended; R4+5 ending proximal to M3+4; anal point narrowly triangular with microtrichia only, sitting high on tergite IX; and virga composed of two spines.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chironomidae; Orthocladiinae; Jururumberus; New genus; New species; Brazil; Neotropical region; Mata Atlântica; Amazon.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400071

First record of herbivory of the invasive macrophyte Hedychium coronarium J. König (Zingiberaceae)
Provedor de dados: 49
Autores: Castro,Wagner Antonio Chiba de; Moitas,Marcel Loyo; Lobato,Gabriela Monteiro; Cunha-Santino,Marcela Bianchessi da; Matos,Dalva Maria da Silva.
Invasive species can cause structural and functional changes in their non-native habitats, such as changes in the trophic chain. We describe ramet herbivory of butterfly ginger, an aggressive aquatic weed in Brazil, by capybaras in a floodplain area of a Cerrado reserve. This is the first record of herbivory of H. coronarium in invaded areas. Capybaras could be using the butterfly ginger as habitat and as a food resource, which could cause changes in apparent competition between these invasive and native macrophytes.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Butterfly ginger; Aquatic weed; Capybaras.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400368

Occurrence of Stercorarius pomarinus (Temminck, 1815, Charadriiformes: Stercorariidae) in the Cananéia estuary, southern coast of São Paulo State
Provedor de dados: 49
Autores: Barbieri,Edison; Bete,Douglas.
Many Neartic seabirds migrate to South America for the non-breeding season, using several key stopover and wintering sites along the Atlantic coast. The Stercorarius pomarinus is a widely distributed seabird found in every Ocean. It is a migratory bird from northern North America that flies southwards. However, there is little information about the occurrence of Stercorarius pomarinus along the São Paulo State coast. Former publications concerning the birds of Iguape- Cananéia- Ilha Comprida estuary have made no mention of the presence of this bird in the region. Thus it is important that forthcoming appearances be recorded. Throughout the bird-sample selection stage, undertaken since 1998 in the Cananéia estuary (25° 02' 44.71" S and 47° 55' 14.58" W) -...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Seabird; Migration; Cananéia; São Paulo; Stercorarius pomarinus.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100035

Diversity of Odonata (Insecta) larvae in streams and farm ponds of a montane region in southern Brazil
Provedor de dados: 49
Autores: Pires,Mateus Marques; Kotzian,Carla Bender; Spies,Marcia Regina; Neri,Damaris Battistel.
This study presents an inventory of the genera of Odonata found in streams and artificial farm ponds in a montane region, with temperate climate, in southern Brazil. Differences in richness of lotic and lentic environments were also investigated. The diversity of odonate families and genera in southernmost Brazil is lower than in warmer, either tropical or subtropical, regions of the country. Nine genera are new records for the region and six genera had their geographical ranges extended to regions with temperate climate of the Neotropics. The overall richness and especially the overall abundance recorded in the studied area are possibly determined by the occurrence of numerous farm ponds because natural standing waters are scarce in the region. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dragonfly; Inventory; Neotropical region; Reservoirs; Riverine fauna.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300259

Ecomorphological differences between Rhamdia (Bleeker, 1858) populations from the Iguaçu River basin
Provedor de dados: 49
Autores: Mise,Fabio Teruo; Tencatt,Luiz Fernando Caserta; Souza,Fagner de.
Morphological and genetic evidences suggest that Rhamdia branneri and Rhamdia voulezi, currently considered synonymous of Rhamdia quelen, are in fact two valid species. Furthermore, in the taxonomic revision of R. quelen, no exemplars from the Iguaçu River were examined, which makes the synonymy doubtful. Considering the two species as valid, it was hypothesized that R. branneri and R. voulezi have ecomorphological differences, with the objective to verify if they can be considered ecologically distinct. Ecomorphological characterization was conducted using ecomorphological indices. For statistical analysis, a Principal Component Analysis (PCA), a Multiresponse Permutation Procedure (MRPP), and a Discriminant Analysis (DA) were performed. The ordination...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Endemism; Heptapteridae; Rhamdia voulezi; Rhamdia branneri; Rhamdia quelen; Ecomorphology.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400099

Uma proposta de material didático baseado nas espécies de Vochysiaceae existentes em uma trilha no cerrado de Bauru - SP
Provedor de dados: 49
Autores: Rissi,Mariana Ninno; Cavassan,Osmar.
Este trabalho foi realizado em uma trilha localizada na Reserva Legal do Campus de Bauru da UNESP, caracterizada especialmente por vegetação de cerrado. Este espaço é utilizado para o desenvolvimento de atividades práticas de campo de um projeto denominado "Passeando e aprendendo no cerrado", no qual alunos dos três níveis de escolaridade são guiados para uma aula prática de Ecologia e Botânica. A família Vochysiaceae foi escolhida como objeto da proposta por ter grande representatividade neste ambiente e possuir elementos com morfologia típica das espécies de cerrado: caules tortuosos, suberosos e algumas espécies com folhas coriáceas. O grupo possibilita ainda a visualização de diversas interações ecológicas durante aula prática de campo. As espécies...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodiversidade; Ensino de botânica; Aula prática de campo; Cerrado.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100003

Flowers visited by hummingbirds in an urban Cerrado fragment, Mato Grosso do Sul, Brazil
Provedor de dados: 49
Autores: Barbosa-Filho,Waldemar Guimarães; Araujo,Andréa Cardoso de.
Hummingbirds are the main vertebrate pollinators in the Neotropics, but little is known about the interactions between hummingbirds and flowers in areas of Cerrado. This paper aims to describe the interactions between flowering plants (ornithophilous and non-ornithophilous species) and hummingbirds in an urban Cerrado remnant. For this purpose, we investigated which plant species are visited by hummingbirds, which hummingbird species occur in the area, their visiting frequency and behavior, their role as legitimate or illegitimate visitors, as well as the number of agonistic interactions among these visitors. Sampling was conducted throughout 18 months along a track located in an urban fragment of Cerrado vegetation in Campo Grande, Mato Grosso do Sul,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agonistic behavior; Fragmentation; Ornithophily; Pollination.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400021

The coexistence of endemic species of Astyanax(Teleostei: Characidae) is propitiated by ecomorphological and trophic variations
Provedor de dados: 49
Autores: Mise,Fabio Teruo; Fugi,Rosemara; Pagotto,João Paulo Alves; Goulart,Erivelto.
The aim of the present study was to evaluate factors that may favor the coexistence of three endemic species of Astyanax (Astyanax bifasciatus,Astyanax minor and Astyanax gymnodontus) in Segredo Reservoir (Iguaçu River, Paraná State, Brazil), and to test the hypothesis that these species share food resources, being the dietary variations related to morphological characteristics. Fish were collected at three samplings sites in 1993 and 1994, during the first year after the filling phase of the reservoir. The diet was assessed using stomach content analysis and ecomorphology by ecomorphological indices. Diet and ecomorphology data were ordinated by multivariate techniques (DCA and PCA, respectively), aiming to characterize trophic guilds and identify...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fish; Resource partitioning; Ecomorphological divergence; Iguaçu River; Segredo reservoir.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300021

A ictiofauna do Canal de Bertioga, São Paulo, Brasil
Provedor de dados: 49
Autores: Barbanti,Bruno; Caires,Rodrigo; Marceniuk,Alexandre Pires.
O Canal de Bertioga, localizado no litoral do estado de São Paulo, é delimitado pelo continente e pela ilha de Santo Amaro, constituindo a unidade natural que conecta os municípios de Santos, Guarujá e Bertioga, representando uma segunda conexão do complexo estuarino de Santos-São Vicente com o oceano. No presente estudo foram realizadas coletas, entre dezembro de 2009 a novembro de 2010, no trecho norte do Canal de Bertioga (23° 51' 23,83" S e 46° 07' 58,87" O e 23° 53' 31,72" S e 46° 11' 17,74" O), com o objetivo de inventariar a ictiofauna da região. Foram coletados 1.429 exemplares, pertencentes a 78 espécies, incluídas em 14 ordens, 39 famílias e 67 gêneros. As famílias mais especiosas foram Sciaenidae (nove spp.), Carangidae (nove spp.), Haemulidae...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Estuário; Biodiversidade; Conservação; Chave de identificação; Complexo estuarino de Santos-São Vicente.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100027

Floristic and phytosociology in a physiognomic gradient of riverine forest in Cerrado, Campinas, SP
Provedor de dados: 49
Autores: Carvalho,Marina Begali; Bernacci,Luís Carlos; Coelho,Ricardo Marques.
Knowledge on floristic composition and vegetation structure is essential to preserve plant biodiversity and environmental conditions. A floristic and structural survey of woody vegetation was carried out in a physiognomic gradient of riparian forest of Cerrado vegetation, Campinas - SP. We sampled 25 plots, distributed along five transects, located perpendicularly to a stream. We found 971 individuals (65 standing dead trees) distributed among 35 families and 80 species. We recorded one single individual of exotic species (Citrus limon – rangpur) and a large number of individuals of endangered species (Luetzelburgia guaissara, Myroxylon peruiferum andTrichilia hirta) indicating that the Santa Elisa study area retains much of the original characteristics of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ecotone; Savanna; Floristic similarity; Riverine forest-cerrado transition; Vegetation structure.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300110

Effect of high temperature on germination of four legumes from a forest-grassland mosaic in Southern Brazil
Provedor de dados: 49
Autores: Silveira,Fernanda Schmidt; Overbeck,Gerhard Ernst.
Passage of a fire can break dormancy of the seeds of many plant species in fire-prone ecosystems. This response to fire is especially well known for the Fabaceae family, but has been poorly studied in Southern Brazil. We collected seeds of four Fabaceae species present in grasslands-forest mosaics of Southern Brazil: Mimosa bimucronata, Desmodium barbatum, Sesbania virgata and Collaea stenophylla. Seeds were exposed to different heat treatments (exposure to 60° and 80 °C for 5 minutes, to 100 °C for 2 minutes, control without heat treatment); not all species were tested in all treatments. After the treatment, the seeds were kept in a germination chamber with a light period of 12/12 hours and temperature of 25 °C. Germinated seeds were counted every 2 days....
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Campos Sulinos; Ecophysiology; Fabaceae; Fire; Grassland; Heat shock.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200331

First record of the freshwater copepod Eucyclops titicacae Kiefer, 1957, new rank (Copepoda, Cyclopoida) in Colombia
Provedor de dados: 49
Autores: Fuentes-Reinés,Juan Manuel; Suárez-Morales,Eduardo.
The freshwater cyclopoid copepod Eucyclops titicacaeKiefer, 1957, new rank, was previously known as a subspecies of E. neumani (Pesta, 1927). Hitherto, it was recorded only from Lake Titicaca in Peru and Lake Valencia in Venezuela. This species is here recorded from Laguna Navío Quebrado, La Guajira, northern Colombia. This is the first record of E. titicacae in Colombia and the third locality in which this species has been reported from. We provide comparative data on the morphology of this copepod. The Colombian specimens have the combination of diagnostic features of E. neumani titicacae as reported in both the original description and subsequent taxonomical accounts, including: 1) spinules on caudal rami not reaching halfway the outer margin; 2) caudal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Continental copepods; Taxonomy; Freshwater zooplankton; Laguna Navío Quebrado; Colombia; Distribution.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400105

Characterization of plant growth-promoting bacteria inhabiting Vriesea gigantea Gaud. and Tillandsia aeranthos (Loiseleur) L.B. Smith (Bromeliaceae)
Provedor de dados: 49
Autores: Giongo,Adriana; Beneduzi,Anelise; Gano,Kelsey; Vargas,Luciano Kayser; Utz,Laura; Passaglia,Luciane Maria Pereira.
Microorganisms that live inside and around a plant can supply it with essential substances, such as phytohormones and essential nutrients. The present investigation aimed to isolate and characterize the phyllosphere, the endophytic, and the water tank bacteria associated with Vriesea gigantea and Tillandsia aeranthos. The bacteria were tested for siderophore and indole-3-acetic acid (IAA) production, phosphate solubilization, and presence of the nif H gene. Genetic diversity of the bacterial isolates was evaluated by rep-PCR. Sixty-eight bacterial strains were isolated from 3 different microhabitats of V. gigantea and from 2 microhabitats of T. aeranthos bromeliad plants. Gram-positive, spore-forming bacilli comprised most bacterial isolates. All isolates...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bromeliads; PGPB; Diazotrophic bacteria; Water tank; Siderophore; IAA.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300080

Does body size of neotropical ant species influence their recruitment speed?
Provedor de dados: 49
Autores: Godoy,Bruno Spacek; Camargos,Lucas Marques de.
Ants are one of the most important animal groups in tropical forests because of its abundance and number of species. An important characteristic of the group is the eusociality, which allows the occurrence of a recruitment behavior when food resource is found. However, there are two main questions regarding this behavior: (i) the recruitment is a product of environmental or phylogenetic pressures, and (ii) the recruitment speed is related to the body size of the ant species. In this work we addressed these two questions using 17 species of neotropical ants, in the Amazonic lowland dense rain forest. According to results, recruitment behavior is related to ant size, where smaller species exhibit this trait when finding a protein resource. However, species...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Formicidae; Foraging behavior; Phylogenetic contrasts; Social insects; Amazon.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100010

Diversity, activity patterns, and habitat use of the snake fauna of Chapada dos Veadeiros National Park in Central Brazil
Provedor de dados: 49
Autores: França,Frederico Gustavo Rodrigues; Braz,Vívian da Silva.
Chapada dos Veadeiros National Park (CVNP) in central Brazil is one of the most important protected areas of Brazilian Cerrado yet the diversity that this park harbors remains unknown for many taxa. From 2006 to 2009, we studied the snake assemblage of CVNP to determine the species composition, abundance, seasonal and daily activity patterns, morphology, and habitat use. We documented 47 snake species from seven families within CVNP, with the most common species being Bothrops marmoratus, Oxyrhopus trigeminus, Crotalus durissus and Bothrops moojeni. The incidence of snakes was highly seasonal and appeared to be associated mainly with rainfall. Daily activity patterns revealed that the majority of snakes are strictly diurnal, whereas others are nocturnal or...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Snakes; Assemblage; Ecology; Brazilian Cerrado.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100008

Influence of camera-trap sampling design on mammal species capture rates and community structures in southeastern Brazil
Provedor de dados: 49
Autores: Srbek-Araujo,Ana Carolina; Chiarello,Adriano Garcia.
The distribution of species and population attributes are critical data for biodiversity conservation. As a tool for obtaining such data, camera traps have become increasingly common throughout the world. However, there are disagreements on how camera-trap records should be used due to imperfect species detectability and limitations regarding the use of capture rates as surrogates for abundance. We evaluated variations in the capture rates and community structures of mammals in camera-trap surveys using four different sampling designs. The camera traps were installed on internal roads (in the first and fourth years of the study), at 100-200 m from roads (internal edges; second year) and at 500 m from the nearest internal road (forest interior; third year)....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic Forest; Capture success; Detection bias; Detection probability; Mammal inventory.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200051

Papilionoideae (Leguminosae) na Mata Atlântica do Rio Grande do Norte, Brasil
Provedor de dados: 49
Autores: São-Mateus,Wallace Messias Barbosa; Cardoso,Domingos; Jardim,Jomar Gomes; Queiroz,Luciano Paganucci de.
This study presents a taxonomic account of the Papilionoideae (Leguminosae) from remnants of Atlantic Forest in the Brazilian state of Rio Grande do Norte. We recorded 68 species and 32 genera within the following tribes: Phaseoleae (11 genera/24 species), Dalbergieae (9/20), Swartzieae (3/3), Millettieae (2/4), Sophoreae (2/2), Abreae (1/1), Crotalarieae (1/3), Desmodieae (1/7), Indigofereae (1/3), and Sesbanieae (1/1). Ten genera and 32 species are newly recorded for the flora of Rio Grande do Norte. The most species-rich genera were Desmodium (7 species), Centrosema (5), Stylosanthes (5), Aeschynomene (4), and Macroptilium (4). Herbaceous and shrubby species have predominated with 60% (41 spp.) of the total species diversity, following by the vines and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fabaceae; Floristics; Northeastern Brazil; New records.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400315

A commented list of Scaphopoda (Mollusca) found along the Brazilian coast, with two new synonymies in the genus Gadila Gray, 1847
Provedor de dados: 49
Autores: Souza,Leonardo Santos de; Araújo,Isabella Campos Vieira; Caetano,Carlos Henrique Soares.
This review aims to present an updated checklist of scaphopods, based mainly on literature database. There is a total of 40 species (six families) for Brazil, including information about the distribution and bathymetric range of each taxon. We propose two synonyms with the aid of morphometry of the shell, for the genus Gadila: G. longa as junior synonym of G. elongata and G. robusta as junior synonym of G. pandionis.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Scaphopods; Morphometry; Synonyms; Distribution; Bathymetry.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200227

Cerambycinae (Coleoptera, Cerambycidae) em Mato Grosso, Brasil
Provedor de dados: 49
Autores: Barreto,Marliton Rocha; Machiner,Ricardo; Smiderle,Eder Cristian.
Um inventário dos Cerambycinae para o Estado de Mato Grosso, em especial a região de Sinop e Claudia, é apresentado neste trabalho. Trinta e quatro espécies, distribuídas em 32 gêneros, são registradas para o estado. Entre elas, quatro são novos registros para o Mato Grosso: Anoplomerus rotundicollis G.-Méneville, 1844; Juiaparus mexicanus (Thomson, 1861); Poeciloxestia ochrotaenia (Bates, 1870); Thoracibidion ruficaudatum (Thomson, 1865).
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insecta; Inventário; Amazônia Matogrossense.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100032

Diversidade de Anuros (Amphibia) na reserva extrativista Lago do Cedro e seu entorno, Aruanã, Goiás
Provedor de dados: 49
Autores: Melo,Muryllo; Fava,Fernanda; Pinto,Hugo Bonfim Arruda; Bastos,Rogério Pereira; Nomura,Fausto.
O Cerrado é uma savana tropical que abriga uma anurofauna muito diversa, sendo estimado de 209 espécies à 271 espécies conhecidas, das quais a metade (51%) são endêmicas. Neste trabalho, apresentamos o inventário da anurofauna da Reserva Extrativista Lago do Cedro (RELC), noroeste do estado de Goiás. Ao todo, registramos 36 espécies de anuros, distribuídas em cinco famílias, das quais cinco espécies são endêmicas do Cerrado. A alta riqueza de espécies encontrada pode ser explicada pela heterogeneidade de habitats, promovida pelas diferentes fitofisionomias dentro da unidade de conservação. A riqueza de espécies e a representatividade por família apresentam valores semelhantes aos encontrados em outras taxocenoses no Cerrado, com a anurofauna local formada...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Unidade de conservação; Girinos; Cerrado; Anura; Bacia do rio Araguaia; Levantamento de espécies.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200205

Olpidium gregarium, a chytrid fungus affecting rotifers populations in Rio Grande Reservoir, São Paulo State, Brazil
Provedor de dados: 49
Autores: Meirinho,Patrícia do Amaral; Nishimura,Paula Yuri; Pires-Zottarelli,Carmen Lidia Amorim; Mochini-Carlos,Viviane; Pompêo,Marcelo Luiz Martins.
A chytrid fungus Olpidium gregarium was found in Rio Grande Reservoir as rotifers populations' parasite. Along the reservoir central axis, the rotifers density decreased in the dam direction, while the density of affected rotifers by the chytrid fungus increased in the same direction. Moreover, some rotifers species were more affected than others, thus showing certain preference for some rotifers species. Thereby, this parasite may be interfering in the distribution of rotifers population in Rio Grande Reservoir. This is the first report of this species for Brazil.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Parasite; Chytridiomycota; Rotifera; Zones.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100036

Biological aspects of Cyclocephala tucumana Brethes, 1904 and Cyclocephala melanocephala (Fabricius, 1775) (Coleoptera: Scarabaeidae)
Provedor de dados: 49
Autores: Nogueira,Gerson Aler de Lima; Rodrigues,Sérgio Roberto; Tiago,Elison Floriano.
The studies were conducted on the biological aspects of Cyclocephala tucumana Brethes, 1904 and C. melanocephala (Fabricius, 1775) in Aquidauana, MS, Brazil. From January to December 2009 a light trap was installed to make collections of adults of C. tucumana and from January 2010 to February 2011 for collections of adults of C. melanocephala, at the experimental farm of the Universidade Estadual de Mato Grosso do Sul. Adults were maintained in plastic containers with soil and complete plants of Brachiaria decumbens Stapf cv. Basilisk to oviposition and start biological studies. Adults of C. tucumana were collected from September to November in the field; the embryonic period lasted on average 14.7 days, and the first, second and third larval instars...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Life cycle; Cyclocephalini; Dynastinae; Insects of the soil.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100009

Occupancy of different types of forest habitats by tyrant flycatchers (Passeriformes: Tyrannidae)
Provedor de dados: 49
Autores: Rosa,Gabriel Lima Medina; Anjos,Luiz dos; Moura,Maurício Osvaldo.
The abundance distribution of the tyrant flycatchers (Tyrannidae family) was evaluated in three main forest habitats of Mata dos Godoy State Park (PEMG), north of the state of Paraná. We conducted point counts and from the collected data we calculated the Index of Point Abundance (I. P. A.) of each species in the habitats of interior of mature forest (FLI), slope forest (FLE) and reforestation (REF). Among the 22 recorded species, eight occurred in all habitats, while other eight occurred in two habitats and six were exclusive of one habitat. Among the 16 recorded species in more than one habitat, 10 were more abundant in only one. On the contrary to our expectation and despite the clear habitat segregation among species, the abundance distribution was not...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Habitat; Foraging; Abundance; Distribution; Frugivory.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400190

Wing pattern diversity in Brassolini butterflies (Nymphalidae, Satyrinae)
Provedor de dados: 49
Autores: Penz,Carla Maria; Mohammadi,Neda.
This study describes and compares the diverse dorsal and ventral wing color patterns of Brassolini butterflies. Thirty-three species are illustrated, where pattern elements of the nymphalid ground plan are labeled in color. In general, a larger number of pattern elements can be identified on the ventral than on the dorsal surface of both wings, and the forewing has a larger number of discernible pattern elements than the hind wing. The dorsal elements are broad, diffuse, and more difficult to identify against the typically brown brassoline wing background color. Species with a light colored dorsal background served as a guide for our proposal that fewer pattern elements are present dorsally, particularly on the hind wing. Colorful bands or markings...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Butterfly; Wing color; Nymphalid ground plan; Eyespots; Ocelus; Caligo.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300154

Community structure of aquatic insects (Ephemeroptera, Plecoptera, and Trichoptera) in Cerrado streams of Paraguay, Paraná, and São Francisco river basins
Provedor de dados: 49
Autores: Romero,Renato de Mei; Ceneviva-Bastos,Mônica; Baviera,Gustavo Henrique; Casatti,Lilian.
We evaluated qualitatively and quantitatively the community structure of aquatic insects (Ephemeroptera, Plecoptera, and Trichoptera) in 19 streams in areas of Cerrado in the Paraguay, Paraná, and São Francisco river basins. The number of genera and taxonomic composition were compared at spatial (at the hydrographic basins level) and conservation levels (more preserved and less preserved areas). The influence of spatial and environmental factors in richness and abundance was also evaluated. The geographical distribution of Grumicha, Coryphorus, and Austrotinodes was expanded. The highest Trichoptera richness was found in the São Francisco river basin (F = 5,602, p = 0,004) and a higher number of Ephemeroptera genera occurred in the relatively less...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Benthic macroinvertebrates; EPT; Biomonitoring; Conservation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100011

Galhas de insetos em restingas da região sudeste do Brasil com novos registros
Provedor de dados: 49
Autores: Maia,Valéria Cid.
As restingas da região sudeste do Brasil apresentam 476 morfotipos de galhas de insetos distribuídos em 60 famílias, 131 gêneros e 229 espécies de plantas. As Myrtaceae, Asteraceae e Fabaceae destacam-se por apresentar maior riqueza de galhas e maior número de espécies galhadas. Os gêneros super-hospedeiros são Eugenia (Myrtaceae), Mikania (Asteraceae) e Myrcia (Myrtaceae). As espécies super-hospedeiras são: Guapira opposita (Nyctaginaceae), Mikania cf. biformis (Asteraceae) e seis espécies de Myrtaceae: Eugenia adstringens, Eugenia multiflora, Eugenia copacabanensis, Myrcia fallax, Myrciaria floribunda e Psidium cattleyanum. As galhas ocorrem em todos os órgãos vegetativos e reprodutivos, predominando nas folhas. Os indutores pertencem às ordens Diptera,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversidade; Galhas de inseto; Plantas hospedeiras.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100021

Fish fauna of Floresta Nacional de Ipanema, São Paulo State, Brazil
Provedor de dados: 49
Autores: Smith,Welber Senteio; Biagioni,Renata Cassemiro; Halcsik,Letícia.
The Floresta Nacional de Ipanema is located on the southeast of the state of São Paulo, Brazil, and belongs to the cities of Araçoiaba da Serra, Iperó and Capela do Alto. It extends over an area of 5,069 ha surrounded by several streams, small lakes, the Ipanema river and the Hedberg dam. The fish species in this area were sampled between 1993 and 2012 in several isolated studies, with the use of gill nets and sieves. Fifty species of fish were registered, 43 native and 7 non-native (Cyprinus carpio, Piaractus mesopotamicus, Brycon cephalus, Triportheus nematurus, Clarias gariepinus, Tilapia rendalli and Poecilia vivipara), distributed in seven Orders, 21 Families and 41 Genera. The present study aimed at cataloguing the fish species in the Ipanema...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Floresta Nacional de Ipanema; Ichthyofauna; Inventory; Fish; Conservation unit.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200175

King Vulture Sarcoramphus papa (Linnaeus, 1758) (Aves, Cathartidae) nesting in a manmade structure
Provedor de dados: 49
Autores: Petri,Laís; Prado,Bárbara Heliodora Soares do; Antunes,Alexsander Zamorano; Oliveira,Benedito Carlos de.
The King Vulture Sarcoramphus papa (Linnaeus, 1758) is declining globally and it is listed as threatened with extinction in state of São Paulo, southeastern Brazil. Despite a recent increase in observations of this species, nesting records are scarce in the state. We report a nesting attempt on an observation tower at Estação Ecológica de Angatuba, southwestern state of São Paulo.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Angatuba; Breeding behavior; Conservation; Wooden tower.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200355

Estrutura da ictiofauna do rio Bonito, bacia hidrográfica do rio Ivaí, sistema alto rio Paraná, Brasil
Provedor de dados: 49
Autores: Viana,Douglas; Zawadzki,Cláudio Henrique; Oliveira,Edson Fontes de; Vogel,Huilquer Francisco; Graça,Weferson Júnio da.
A diversidade da ictiofauna da bacia do rio Ivaí é altamente subestimada. O presente estudo teve como objetivo caracterizar a ictiofauna do rio Bonito, um tributário do rio Ivaí, bacia do alto rio Paraná, quanto à riqueza, diversidade e constância de espécies. Foram estabelecidos três locais de amostragem ao longo do gradiente longitudinal do rio: cabeceira, trecho médio e região de desembocadura próxima ao rio Ivaí. Três incursões de coleta foram feitas em cada unidade utilizando redes de espera de diferentes malhas, tarrafas e covos. A ictiofauna foi composta por 23 espécies, divididas em nove famílias e três ordens. Entre as espécies coletadas, três delas são possíveis novos registros para o alto rio Paraná e 12 para a bacia do rio Ivaí. A maior riqueza...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversidade; Peixes; Água doce; Região neotropical; Riachos.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200218

Canopy bridges as road overpasses for wildlife in urban fragmented landscapes
Provedor de dados: 49
Autores: Teixeira,Fernanda Zimmermann; Printes,Rodrigo Cambará; Fagundes,João Cláudio Godoy; Alonso,André Chein; Kindel,Andreas.
The effects of habitat fragmentation and deforestation are exacerbated by some elements, such as roads and power lines, which may become filters or barriers to wildlife movements. In order to mitigate mortality and restore connectivity, wildlife passages are being constructed as linear corridors. The installation of these mitigation measures must be followed by systematic monitoring, in order to evaluate their use and effectiveness, to assist in their management, and to convince stakeholders of their value. In this paper we present the results of a monitoring study of the use of rope overpasses developed near a protected area in Porto Alegre, southern Brazil. The canopy bridges were installed by the Urban Monkeys Program in places where electric hazards...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Road; Power lines; Primates; Mitigation; Wildlife passage; Rope bridge.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100013

Intracolonial variation in Siderastrea de Blainville, 1830 (Anthozoa, Scleractinia): taxonomy under challenging morphological constraints
Provedor de dados: 49
Autores: Menezes,Natália Matos de; Neves,Elizabeth Gerardo; Barros,Francisco; Kikuchi,Ruy Kenji Papa de; Johnsson,Rodrigo.
The morphology of sessile invertebrates, such as scleractinian corals, can be controlled by environmental and genetic mechanisms and, consequently, it is highly variable. Morphological variation has puzzled taxonomists by posing challenges to species classification within cryptic species complexes. The 'Atlantic Siderastrea Complex' is a suitable example. Because of overlapping diagnostic traits, the morphological interspecific limits of this group remain controversial and often resulted in doubtful synonyms. In addition, the recent identification of the Caribbean S. radians in the Southwestern Atlantic has revealed that intraspecific variation has been equivocally assessed. Traditionally, hierarchical categories of variation have been the criteria used to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Systematics; Siderastrea radians; Morphological variation; Biogeographic expansion; South Atlantic.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100012

Microhabitat use and diet of Anotosaura vanzolinia(Squamata: Gymnophthalmidae) in a Caatinga area, Brazil
Provedor de dados: 49
Autores: Oliveira,Bruno Halluan Soares de; Pessanha,André Luiz Machado.
This study aimed to analyze the microhabitat use and diet of the lizard Gymnophthalmidae Anotosaura vanzolinia (Dixon 1974) in the Complexo Aluízio Campos (7° 16′ 34″ S, 35° 53′ 7″ W), an area of the Caatinga in the Campina Grande, Paraíba. We studied a total of 12 transects by active searching during the daytime. In each sample, habitat and microhabitat types occupied by the specimen were categorized, together with solar incidence and soil type. For all individuals, morphometric measurements were performed, as well as dissection for stomach content analysis. We collected a total of 46 individuals, with a snout-vent length ranging between 19 and 45 mm, collected over all habitats, with prevalence in soil and earthy litter microhabitats near rocky outcrops....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fossorial lizards; Feeding ecology; Gymnophthalmid lizard; Foraging.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300193

Distribution and biological aspects of the introduced speciesMoina macrocopa (Straus, 1820) (Crustacea, Cladocera) in the semi-arid central region of Argentina
Provedor de dados: 49
Autores: Vignatti,Alicia María; Cabrera,Gabriela Cecilia; Echaniz,Santiago Andrés.
Moina macrocopa is common in eutrophic water bodies. Two subspecies have been described: M. macrocopa macrocopa (Straus, 1820), whose original distribution was restricted to the Old World, and M. macrocopa americanaGoulden, 1968, recorded only in North America. In 1994, the species was found in Bolivia, and in 1997 it was found in the northeast of Argentina. As the specimens belonged to M. macrocopa macrocopa in both cases, the authors suggested that it may have been introduced from the Old World by anthropogenic means. The aim of this study was to assess the distribution of M. macrocopa in La Pampa (Argentina), and provide information on its population characteristics under natural conditions. The species was recorded in six out of more than 100 water...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Argentina; Temporary lakes; Cladocera; Moina macrocopa; Invasive species.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300086

Ecological partitioning of three Columbidae species in Northern Paraná, Southern Brazil
Provedor de dados: 49
Autores: Fontoura,Priscila Montes; Orsi,Mário Luis.
Three species of Columbidae (Columbina talpacoti,Columbina picui and Zenaida auriculata) were studied in Londrina, Northern Paraná (Brazil), with the aim of analyzing which foraging and habitat factors contribute to their ecological partitioning. The study was conducted over one year in three different areas (urban, rural and pasture). We made monthly observations of the foraging strategies used by the species and the habitats they selected. Possible variations in availability of resources over the twelve months of the study did not influence the type of foraging used by the three species. Significant differences between the foraging strategies used by the species were observed in relation to the foraging site, specifically the foraging substrate. Soil,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Columbina picui; Columbina talpacoti; Foraging strategies; Habitat selection; Zenaida auriculata.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300044

New group, new species and new records from Brazil of the atropos, brasilianus and giganteus groups (Blattaria, Blaberidae, Blaberinae)
Provedor de dados: 49
Autores: Lopes,Sonia Maria; Oliveira,Edivar Heeren de.
This paper presents 20 species of the genus Blaberus (Blaberidae) included in the atropos, brasilianus and giganteus groups. A new group is defined, and 12 new species are described. The genitalia of the eight known species are described. The descriptions are based on the morphology of the head, thorax and abdomen, illustrating the structures of the genitalia and variations in the form of the structures, some within the same species. New records for five known species are discussed. All material is deposited in the collection of the Museu Nacional of Rio de Janeiro.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Blattaria; Morphology; Diversity; New taxon; Taxonomy.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200081

The amphibians and reptiles of Manu National Park and its buffer zone, Amazon basin and eastern slopes of the Andes, Peru
Provedor de dados: 49
Autores: Catenazzi,Alessandro; Lehr,Edgar; May,Rudolf von.
We compile a list of all amphibians and reptiles known to occur within Manu National Park, Peru and its buffer zone, located in one of the world's biodiversity hotspots. Covering approximately 0.01% of the planet's terrestrial surface, this protected area preserves 155 species of amphibians and 132 species of reptiles, corresponding to 2.2% and 1.5% respectively of the known diversity for these groups. Moreover, Manu National Park preserves natural habitats and populations of one critically endangered (Atelopus erythropus), three endangered (Bryophryne cophites, Pristimantis cosnipatae and Psychrophrynella usurpator), three vulnerable amphibians (Atelopus tricolor, Gastrotheca excubitor, Rhinella manu) and two vulnerable reptiles (Chelonoidis denticulata,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Herpetofauna; Biodiversity hotspots; Cusco Region; Madre de Dios Region; Amazonia.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400269

Longitudinal patterns of fish assemblages in mountain streams from tropical forest biome
Provedor de dados: 49
Autores: Silva,João Fernando Marques da; Raio,Cibele Bender; Bernardino,Débora Fernandes Silva; Bennemann,Sirlei Terezinha.
The aim of this study was to verify structure patterns in fish assemblages in mountain streams of the Rio Tibagi basin through the characterization of spatial and temporal variations in the composition of fish species. Samples were collected in three segments of the Varanal, João Pinheiro and Rio Preto streams. We collected 1154 specimens belonging to 21 species. The most abundant orders were Characiformes (59.01 ± 2.84%) and Siluriformes (39.34 ± 2.82%). Phalloceros harpagos was the most abundant species with 433 individuals, followed by Trichomycterus aff.davisi, with 292 individuals. No temporal variations (between seasons) were detected, but the cluster analysis suggests a separation of species composition between the segments closer to the headwaters...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ichthyofauna; Freshwater fishes; Neotropical fishes; Low order streams; Tibagi river basin.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300064

Flood-mediated use of habitat by large and midsized mammals in the Brazilian Pantanal
Provedor de dados: 49
Autores: Lázari,Patrick Ricardo De; Santos-Filho,Manoel dos; Canale,Gustavo Rodrigues; Graipel,Maurício Eduardo.
The Brazilian Pantanal comprises a mosaic of forest and field environments harbouring a rich community of large and midsized mammals that are adapted to the annual hydrological cycle. Here we evaluated richness and composition of large and midsized mammals inhabiting forested and open habitats affected by yearly floods in the Pantanal in Cáceres from October 2009 to September 2010. We compared these communities in marshes, dry forests and riparian forests based on 640 camera-traps.nights, sights, tracks, faecal samples and interviews. We also compared results in a private land (Descalvados Farm) and in a protected area (Taiamã Ecological Station). In total, we sampled 26 large and midsized mammals, including five threatened and two near threatened species....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Species richness; Composition; Floods; Conservation; Use of space.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200070

Use of carbon and nitrogen stable isotopes to study the feeding ecology of small coastal cetacean populations in southern Brazil
Provedor de dados: 49
Autores: Hardt,Fernando Augusto Sliva; Cremer,Marta Jussara; Tonello Junior,Antonio José; Bellante,Antonio; Buffa,Gaspare; Buscaino,Giuseppa; Mazzola,Salvatore; Barreto,André Silva; Martinelli,Luiz Antonio; Zuppi,Giovanni Maria.
Samples from individuals of the populations of Sotalia guianensis (Guiana) and Pontoporia blainvillei (Franciscana) dolphins living in the Babitonga Bay estuary (26° 28′ S/48° 50′ W), and samples from individuals of a second population of P. blainvillei from a nearshore area (26° 38′ S/48° 41′ W), were collected and analyzed along with their prey between 2000 and 2006, to determine the carbon and nitrogen stable isotope ratios and to verify differences in their feeding ecology. No differences were found in the median ð15N values of Guiana (15.2‰) and Franciscana (15.9‰) dolphins living in Babitonga Bay, nor of nearshore Franciscana (15.0‰) individuals, suggesting no variation in the trophic level of these populations. However, the lack of more information...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pontoporia blainvillei; Sotalia guianensis; Babitonga Bay; Feeding ecology; Trophic level.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400090

Flora vascular da Serra da Pedra Branca, Caldas, Minas Gerais e relações florísticas com áreas de altitude da Região Sudeste do Brasil
Provedor de dados: 49
Autores: Rezende,Munike Gonçalves de; Elias,Ricardo Cunha Loyola; Salimena,Fátima Regina Gonçalves; Menini Neto,Luiz.
Serra da Pedra Branca (SPB) is a mountain range located in the Southwestern portion of the state Minas Gerais, in the municipality of Caldas (21°58′-21°55′S, 46°24′-46°22′W). It is a striking feature in the landscape, between 1100 and 1780 m.s.m., in a region that is part of the Atlantic Forest Domain and is considered as a priority area for conservation of the flora in Minas Gerais state. The vegetation is composed by a mosaic of “campo de altitude” (which occupy the greatest extension in the area), Seasonal Semidecidual Montane Forest, Dense Ombrophilous High-Montane Forest and Mixed Ombrophilous Forest. The aims of this study was the elaboration of a floristic survey of SPB added to the specimens collected by Anders Fredrik Regnell in the nineteenth...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic Forest; “campo de altitude”; “Serra da Mantiqueira”; Similairy analysis; Southern of Minas Gerais.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400201

Restinga de Praia das Neves, ES, Brasil: caracterização fitofisionômica, florística e conservação
Provedor de dados: 49
Autores: Braz,Denise Monte; Jacques,Eliane de Lima; Somner,Genise Vieira; Sylvestre,Lana da Silva; Rosa,Maria Mercedes Teixeira da; Pereira-Moura,Maria Verônica Leite; Germano Filho,Pedro; Couto,Arthur Vinícius dos Santos; Amorim,Thiago Azevedo.
A restinga de Praia das Neves ocupa uma extensa área (ca. 67 km2) no extremo sul do Estado do Espírito Santo (21°14′35.35″S e 40°56′48.68″W), limitada pelo Rio Itabapoana, na divisa com o Estado do Rio de Janeiro. O objetivo desse estudo foi identificar e caracterizar as diferentes formações vegetais dessa restinga e sua flora associada, incluindo o reconhecimento dos habitats relacionados ao lagarto ameaçado de extinção Liolaemus lutzae Mertens, 1938. Excursões para caracterização da flora local foram realizadas em campanhas pontuais, entre os anos de 2008 e 2011, e o material botânico foi identificado e posteriormente depositado no Herbário RBR do Departamento de Botânica da Universidade Federal Rural do Rio de Janeiro. A caracterização das diferentes...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Floresta Atlântica; Sudeste do Brasil; Cordões arenosos; Flora; Formação vegetal; Espécies ameaçadas.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300315

Benthic macroinvertebrate community structure and seasonal variation in a neotropical stream in the State of Alagoas, Brazil
Provedor de dados: 49
Autores: Linares,Marden Seabra; Faccioli,Gregorio Guirado; Freitas,Liriane Monte.
This paper presents a study on the macrobenthic community in the Salvia stream, a headwater stream that runs through a conserved Atlantic forest fragment in the state of Alagoas, Brazil, and identifies the environmental factors that most influence the community structure. Ten sampling sites were chosen, conducting each collection during the rainy season of 2010 and the dry season of 2011. At each site the macroinvertebrates were collected using a D net (0.250 mm mesh). Water samples were collected and taken to the laboratory to analyze Dissolved Oxygen, Conductivity, pH and Alkalinity. Water temperature, surface current speed and depth were measured at the site. Canonical Correspondence was used to analyze the effect of environmental factors on the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquatic insects; Diversity; Environmental factors; Lotic environment; Zoobenthic fauna.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300050

Composição e riqueza de espécies de anfíbios anuros em três diferentes habitat em um agrossistema no Cerrado do Brasil central
Provedor de dados: 49
Autores: Campos,Vitor Azarias; Oda,Fabrício Hiroiuki; Juen,Leandro; Barth,Adriane; Dartora,Aline.
A plasticidade adaptativa tem sido postulada como um fator importante para explicar a distribuição e abundância de espécies em habitat com diferentes níveis de variação ambiental e a heterogeneidade ambiental tem sido apontada como responsável pela manutenção, aumento ou diminuição da diversidade. Neste trabalho, determinamos o efeito da periodicidade e estrutura do habitat sobre a riqueza e composição de espécies em três diferentes habitat: córrego (P1), poças temporárias (P2) e represa permanente (P3) em um agrossistema no Cerrado do Brasil central. Nove expedições de campo foram realizadas entre outubro de 2005 e abril de 2007. Os métodos de amostragem por encontro visual e procura auditiva foram utilizados para o registro das espécies. Foram...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anurofauna; Plasticidade adaptativa; Heterogeneidade ambiental; Estrutura do habitat; Perturbação antrópica.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100014

Aves do Parque Estadual Carlos Botelho – SP
Provedor de dados: 49
Autores: Antunes,Alexsander Zamorano; Silva,Bruna Gonçalves da; Matsukuma,Ciro Koiti; Eston,Marilda Rapp de; Santos,Ana Maria Rodrigues dos.
O inventário da biodiversidade nas unidades de proteção integral implantadas em remanescentes da Mata Atlântica, além de ampliar o conhecimento sobre a distribuição das espécies, pode contribuir para ações de monitoramento e manejo que aprimorem a conservação dos ecossistemas. Os objetivos desse trabalho foram caracterizar as assembleias de aves do Parque Estadual Carlos Botelho, sudeste do estado de São Paulo, quanto à composição de espécies, abundância relativa e associação com fitofisionomias locais. A amostragem foi realizada entre abril de 2006 e dezembro de 2009 pelo método de trajetos de distância ilimitada, totalizando 1000 horas de esforço amostral. Foram registradas 331 espécies, predominando formas florestais residentes e com abundância relativa...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Conservação; Mata Atlântica; Inventário.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200124

Bats in forest remnants of the Cerrado savanna of eastern Mato Grosso, Brazil
Provedor de dados: 49
Autores: Sousa,Ricardo Firmino de; Venere,Paulo Cesar; Faria,Karina de Cassia.
In the state of Mato Grosso, studies aiming to investigate the diversity and richness of bats are still scarce. In the present study, the chiropteran fauna of eastern Mato Grosso (Brazil) was investigated at four sites representing the Cerrado savanna biome with different degrees of anthropogenic impact, in the municipality of Nova Xavantina. Surveys were conducted between January and December, 2010, with a total of 48 nights of mist-netting. A total of 423 bats were captured, representing 25 species distributed in five families. A greater abundance of individuals was recorded at all sites during the rainy season, with considerable variation being observed over the course of the year in species richness and composition, and the abundance of bats. Species...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chiroptera; Conservation; Species richness; Diversity.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200236

Trophic niche comparison between two predators in northern Rio de Janeiro State, Brazil: a stable isotopes approach
Provedor de dados: 49
Autores: Beneditto,Ana Paula Madeira Di; Rezende,Carlos Eduardo; Camargo,Plínio Barbosa; Kehrig,Helena Amaral.
The trophic niche of the sympatric predators Pontoporia blainvillei(franciscana dolphin) and Trichiurus lepturus (ribbonfish) was compared by stable isotope (δ15N and δ13C) ratios in hepatic and muscular tissues to understand how they co-exist in the northern Rio de Janeiro State (21°30′S-22°15′S), south-eastern Brazil. Dolphin specimens were incidentally captured through commercial gillnet fisheries, while fish specimens were the target of these fisheries. The predators had similar δ15N values in the liver (P. blainvillei: 14.6 ± 1.0‰; T. lepturus: 14.4 ± 0.6‰), which indicates similar trophic position in the recent food intake. However,P. blainvillei showed lighter δ15N values in muscle (13.8 ± 1.0‰) than T. lepturus (15.0 ± 0.4‰), revealing differences...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Trophic niche; Marine vertebrates; Stable isotopes; Rio de Janeiro; Southwest Atlantic.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300029

Structure and floristic relationships between Cerrado sensu stricto sites on two types of substrate in northern Cerrado, Brazil
Provedor de dados: 49
Autores: Lemos,Helena Lara; Pinto,José Roberto Rodrigues; Mews,Henrique Augusto; Lenza,Eddie.
We described and compared the floristic composition, richness, species diversity and structure of the tree-shrub component in pairs of Typical Cerrado (Cerrado Típico) and rocky outcrop Cerrado (Cerrado Rupestre) in two localities in Tocantins State. In each locality, we set up 10 plots of 20 × 50 m at a site, the Cerrado Típico and other Cerrado Rupestre, and sampled the individuals with Db30cm ≥ 5 cm. The rocky outcrop Cerrado did not present any trend towards lower richness and basal area compared to the Cerrado on deep soil. Few species occurred across the four sites and only two important species (Anacardium occidentale and Qualea parviflora) in the four vegetation structure were common to both environments assessed. Furthermore, the occurrence of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brazilian savanna; Cerrado Rupestre; Cerrado Típico; Conservation; Floristic similarity.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400121

Mollusc assemblage in an urban bay nearby a marine extractive reserve, Florianópolis - SC, Brazil
Provedor de dados: 49
Autores: Gandara-Martins,Ana Luiza; Almeida,Tito Cesar Marques de.
have described the spatio-temporal variation of mollusc assemblage in a coastal urban bay near a Marine Extractive Reserve (RESEX), where several human activities are performed. Uni and multivariate analyses were conducted considering spatial (six sampling stations) and temporal scale (30 surveys from 2002 to 2008) and two associations were recognized. We identified 48 species from 28 families belonging to four classes: Bivalvia, Gastropoda, Polyplacophora, and Scaphopoda. The Sand Tidal Flat association had a contribution of more than 90% of Anomalocardia brasiliana (Gmelin, 1791) as well as a higher diversity and similarity among surveys. The Mud Bottom association had a lower similarity among surveys due to the low abundance of species. The feeding...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sand tidal flat; Mud bottom; Feeding habits; Anomalocardia brasiliana; Southern Brazil.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200041

Diversity and distribution of mollusks along the Contas River in a tropical semiarid region (Caatinga), Northeastern Brazil
Provedor de dados: 49
Autores: Kotzian,Carla Bender; Amaral,Aline Monique Blank do.
An inventory of macroinvertebrates conducted in the Contas River basin in Northeastern Brazil found 13 species of freshwater mollusks. Most of the community was represented by pulmonate gastropods, including Physa acuta, Drepanotrema anatinum, D. cimex, D. lucidum, Biomphalaria straminea?, Gundlachia radiata?, G. ticaga and Hebetancylus moricandi; the prosobranchs Pomacea archimedis?, Melanoides tuberculata and Littoridina sp. were also found. Bivalves were less diversified, represented only by Pisidium pulchellum? and Eupera simoni?. The taxonomic composition and the small size of many species reflect the intermittent condition of the basin. Additionally, the occurrence of shells of five terrestrial species (Helicina angulata, Gastrocopta pellucida...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Neotropical region; Atlantic Forest; Intermittent streams; Invasive mollusks; Bahia.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400299

First record of Hydrosmilodon primanus (Eaton) (Ephemeroptera, Leptophlebiidae) from South America
Provedor de dados: 49
Autores: Salinas,Luis Gonzalo; Flowers,Ralph Wills; Dias,Lucimar Gomes.
In this paper the first record of Hydrosmilodon primanus (Eaton, 1892) from South America is presented. The record of the species is based on nymphs collected in San Sebastián de Mariquita city, Tolima department, Colombia.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hermanella; Mayfly; Colombia.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100038

Composição faunística de vespas (Hymenoptera: Vespoidea) na Floresta Estacional do Parque Nacional da Serra da Bodoquena, Brasil
Provedor de dados: 49
Autores: Auko,Tiago Henrique; Silvestre,Rogério.
Neste trabalho realizamos um inventário da fauna de vespas predadoras (Hymenoptera, Vespoidea) do Parque Nacional da Serra da Bodoquena (PNSB), municípios de Bodoquena, Bonito, Jardim e Porto Murtinho, em 42 dias descontínuos de amostragens entre fevereiro de 2007 a dezembro de 2008. Sete expedições de campo foram realizadas em áreas de Floresta Estacional Decidual e Floresta Estacional Semidecidual. As técnicas empregadas foram: coletas ativas com rede entomológica, armadilha de Malaise, bandejas amarelas (armadilha de Möericke) e coleta manual. Trezentos e sessenta e um indivíduos de Vespoidea foram capturados, representados por 107 espécies, em 59 gêneros, distribuídos nas seguintes famílias: Vespidae, Pompilidae, Mutillidae, Tiphiidae e Scoliidae....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vespas aculeadas; Estrutura da comunidade; Diversidade; Mata seca; Inventário rápido.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100028

Diversidade de formigas urbanas (Hymenoptera: Formicidae) de dez cidades do sul do Brasil
Provedor de dados: 49
Autores: Lutinski,Junir Antonio; Lopes,Benedito Cortês; Morais,Ana Beatriz Barros de.
O processo de urbanização vem sendo tratado como uma das maiores ameaças à biodiversidade e, dentre os organismos encontrados em áreas urbanas, as formigas representam um grupo importante, porém ainda pouco estudado comparado a outros insetos. Conhecer a riqueza e a composição da mirmecofauna que habita áreas urbanas e os fatores que estão exercendo pressão sobre essas comunidades são imperativos para a elaboração de planos de manejo e conservação. Este estudo teve como objetivo avaliar a diversidade de formigas de dez cidades localizadas na região austral do Bioma Mata Atlântica. As assembleias foram avaliadas e comparadas por meio da análise de rarefação e estimativas de riqueza. Foram registradas 8.790 ocorrências de formigas, tendo sido identificadas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mirmecofauna; Fragmentação florestal; Áreas verdes; Riqueza; Formigas-praga.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300332

Species of Geotrupidae (Coleoptera: Scarabaeoidea) in Aquidauana, Mato Grosso do Sul, Brazil
Provedor de dados: 49
Autores: Rodrigues,Sérgio Roberto; Puker,Anderson.
Coleoptera of the family Geotrupidae play an important ecological role in the decomposition of animal and plant organic matter. In Brazil there is little information on the diversity and distribution of this group, thus, this work had a purpose to study Geotrupidae species, occurring in Aquidauana, MS. A survey for geotrupids was conducted in Aquidauana, Mato Grosso do Sul, Brazil. Beetles were captured using a light trap over a period of two years, from January 2006 to December 2007. A total of 907 specimens were collected and identified to eight species. From the subfamily Bolboceratinae, the species identified were Bolbapium minutum (Luederwaldt, 1929) and Pereirabolbus castaneus (Klug, 1845). In the subfamily Athyreinae the species identified were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Athyreinae; Bolboceratinae; Insect ecology; Insecta.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100034

Review and consideration on habitat use, distribution and life history of Lycengraulis grossidens (Agassiz, 1829) (Actinopterygii, Clupeiformes, Engraulididae)
Provedor de dados: 49
Autores: Mai,Ana Cecilia Giacometti; Vieira,João Paes.
In this paper, we present a summary of the current knowledge of Lycengraulis grossidens, a widely distributed coastal fish that occurs from Belize to Argentina. This species is abundant in estuaries along the Southwest Atlantic Coast and is important for recreational fishing, and as bycatch of shrimp fisheries. We compiled data available on taxonomy, phylogeny, ecology, fisheries and organized conceptually the life cycle of the species according to modern estuarine-use classification. Our review showed that along its geographic distribution and inside some particular environments (i.e., estuaries and costal lagoons) the species have been classified in a variety of ways in order to describe the remarkable complexity of habitat use that varies from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Contingents; Estuarine resident; Anadromous; Catadromous; Freshwater resident; Review.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300121

Bat flies (Diptera: Streblidae) ectoparasites of bats at an Atlantic Rainforest site in northeastern Brazil
Provedor de dados: 49
Autores: Soares,Fábio Angelo Melo; Graciolli,Gustavo; Alcântara,Daniel Máximo Corrêa; Ribeiro,Carlos Eduardo Borges Pinto; Valença,Gustavo Corrêa; Ferrari,Stephen Francis.
Bat flies were surveyed between March, 2007 and February, 2008, in the Carnijó Private Natural Heritage Reserve (08° 07′ S and 35° 05′ W), an area of Atlantic Rainforest in the municipality of Moreno, in the Brazilian state of Pernambuco. Bats were captured biweekly using mist nets set during six hours each night. The ectoparasites were collected with tweezers and/or a brush wet in ethanol and stored in 70% ethanol. The specimens are deposited in the zoological reference collection of the Federal University of Mato Grosso do Sul. Sixteen species of streblid bat flies were collected from 10 bat species of the family Phyllostomidae. Thirteen of the these streblid species were recorded for the first time in Pernambuco.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chiroptera; Ectoparasites; Atlantic Rainforest; Phyllostomidae; Streblidae.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200242

Anurofauna em uma área na Depressão Periférica, no centro-oeste do estado de São Paulo, Brasil
Provedor de dados: 49
Autores: Costa,William Pinheiro da; Almeida,Silvio César de; Jim,Jorge.
A anurofauna do estado de São Paulo, nas últimas oito décadas, tem sido foco do estudo de importantes grupos de pesquisa em anfíbios anuros. Porém, pesquisas realizadas com comunidades na área da Depressão Periférica do centro-oeste paulista ainda são escassas. A fim de trazer novas informações sobre essa região, nosso objetivo foi inventariar a anurofauna de uma área na Depressão Periférica, associando os resultados com dados da literatura e confrontando os mesmos com aqueles conhecidos para a anurofauna no altiplano da Cuesta de Botucatu. O inventário foi realizado a partir dos dados obtidos em 24 dias de amostragem, decorridos 13 meses de coleta (dezembro de 2008 a dezembro de 2009). Os anuros foram amostrados em potenciais sítios reprodutivos, pelos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anfíbios; Inventário; Partilha de recursos; Ocorrência sazonal; Cuesta de Botucatu.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200163

First record of acari Arrenurus Dugès, 1834 as a parasite of Odonata species in Brazil
Provedor de dados: 49
Autores: Rodrigues,Marciel Elio; Carriço,Cesar; Pinto,Zeneida Teixeira; Mendonça,Paloma Martins; Queiroz,Margareth Maria de Carvalho.
Water mites are common and widespread parasites of some aquatic insects in freshwater habitats. This is the first record of acari Arrenurus Dugès, 1834, as a parasite of Odonata in Brazil. Water mites were sampled from Miathyria marcella (Selys, 1857) and Ischnura fluviatilis (Selys, 1876).
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dragonfly; Parasitism; Water mites.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400365

Metacercariae of Eumegacetes medioximus (Digenea: Eumegacetidae) in larvae of Odonata from Brazil
Provedor de dados: 49
Autores: Pinto,Hudson Alves; Melo,Alan Lane de.
During studies on the participation of larval Odonata in the life cycle of trematodes carried out at the Pampulha reservoir, Belo Horizonte, State of Minas Gerais, Brazil, between May and September 2011, dragonfly larvae, Orthemis discolor (Burmeister, 1839) and Perithemis mooma Kirby, 1889, were found harboring metacercariae identified as Eumegacetes medioximusBraun, 1901. This is the first report and morphological description of metacercariae of E. medioximus in the Neotropical region.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Trematodes; Insects; Dragonfly; Parasites.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200351

New records of Forcipomyia (Pterobosca) incubans (Diptera: Ceratopogonidae) parasitizing wings of Odonata in Brazil
Provedor de dados: 49
Autores: Guillermo-Ferreira,Rhainer; Vilela,Diogo Silva.
Forcipomyia (Pterobosca) incubans Macfie (1937) (Diptera: Ceratopogonidae) is recorded here for the first time for Brazil. Females were collected in the Brazilian Neotropical Savanna parasitizing the wings of Erythrodiplax juliana Ris (1911), Erythrodiplax aff. anomala Brauer (1865) and Erythemis credula Hagen (1861), all Libellulidae dragonflies. A map of potential distribution of this species in the New World is also provided. The results suggest that its distribution may range from southern South America to Mexico, with higher densities in the Brazilian and Colombian Tropical Rain Forests.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biting midge; Flies; Parasite; New record; Neotropical.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100037

Scorpion diversity in two types of seasonally dry tropical forest in the semi-arid region of Northeastern Brazil
Provedor de dados: 49
Autores: Carmo,Rodrigo Felipe Rodrigues; Amorim,Heyde Polyana; Vasconcelos,Simão Dias.
Knowledge on arthropod assemblages in the Brazilian semideciduous dry forest (caatinga) is scarce, despite the increasing exposure to degradation due to human activities such as logging and intensive agriculture. We performed a short-term survey on the diversity of scorpions in two types of caatinga (hipoxerophytic and hiperxerophytic) in Pernambuco State, Northeastern Brazil. A combination of active collection and pitfall traps was used to sample soil scorpions. Six species belonging to two families were registered: Bothriurus asper, Bothriurus rochai (Bothriuridae), Tityus stigmurus, Tityus pusillus, Rhopalurus rochai and Ananteris franckei (Buthidae). There was no significant difference in the richness and the abundance of scorpions in the two types of...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Arachnida; Caatinga; Conservation; Pernambuco; Scorpiones.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200340

Diversidade de anfíbios e répteis Squamata na região do baixo rio Purus, Amazônia Central, Brasil
Provedor de dados: 49
Autores: Waldez,Fabiano; Menin,Marcelo; Vogt,Richard Carl.
A região do baixo rio Purus na Amazônia Central - Brasil representa uma área de relevante interesse para conservação de anfíbios e répteis. No entanto, há pouca informação disponível sobre estes grupos taxonômicos para áreas de florestas de terra firme e florestas de várzea, principais paisagens nesta região. Nesse estudo, realizamos uma amostragem ampla em esforço e área, em dois períodos: 2004-2005 e 2009-2010. Utilizamos técnicas complementares eficientes na amostragem da herpetofauna em florestas tropicais: procura ativa limitada por tempo (PLT), armadilhas de interceptação e queda (AIQ) e armadilhas de interceptação com funis duplos (AIF). Foram registradas 160 espécies, sendo 75 de anfíbios (73 anuros e dois gimnofionos) e 85 de répteis (34 lagartos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazônia brasileira; Florestas inundáveis e não-inundáveis; Distribuição de espécies; Herpetofauna.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100029

Cercosaura ocellata Wagler, 1830 (Lacertilia, Gymnophthalmidae): distribution extension of Northeastern Brazil
Provedor de dados: 49
Autores: Oliveira,Camila Nascimento de; Moura,Geraldo Jorge Barbosa de.
The lizard, Cercosaura ocellata, with its type-locality suggested as being South America's Northeast, is widely distributed in the North and Midwest regions of Brazil, with scarcity of records for the states in the Northeast Region. This work aims to enlarge the geographical distribution of this species. An individual of C. ocellata was registered in a fragment of Atlantic Rain Forest, Mata de Tejipió (08° 05′ 45.59″ S, 34° 57′ 04.91″ W). This register expands its distribution 585 km north and 770 km south, respectively from its closest locations, Bahia and Ceará, filling a gap of disjunct distribution of approximately 900 km in the northeast region of the country.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lizard; Herpetofauna; Occurrence; Atlantic Rain Forest; Pernambuco.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300387

Does human influence on coastal grasslands habitats affect predation pressure on snakes?
Provedor de dados: 49
Autores: Santos,Mauricio Beux dos; Oliveira,Mauro Cesar Lamim Martins de; Gonçalves,Tatiane Penteado; Almeida,Francis de Mattos; Loebmann,Daniel; Tozetti,Alexandro Marques.
The loss and modification of habitats by humans have been considered key factors in the decline of diversity of species worldwide. However, the real effect caused by these disturbances on the biota is still poorly understood. The assessment of the changes in the network of interspecific interactions, such as predation rates on the native fauna, can be an important tool to diagnose the functionality of disturbed ecosystems. In this study we evaluate the predation rate on snakes in coastal grasslands in South America under human influence. Predation rate of artificial snakes, unlike that obtained in other studies, was lower in human-altered areas than preserved ones. Our findings may be due to a reduction in the abundance and/or richness of species of native...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reptiles; Coastal dunes; Human impact; Predation; Brazil.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100039

Terrestrial isopods (Crustacea: Isopoda: Oniscidea) in termite nests (Blattodea: Termitidae) in a cocoa plantation in Brazil
Provedor de dados: 49
Autores: Lisboa,Jonathas Teixeira; Couto,Erminda da Conceição Guerreiro; Santos,Pollyanna Pereira; Delabie,Jacques Hubert Charles; Araujo,Paula Beatriz.
Various animals live in termite nests as secondary occupants. Among them are terrestrial isopods. We found five species of terrestrial isopods (Oniscidea) in 17 of 34 termite nests of Nasutitermes in a cocoa plantation near Ilhéus, Bahia, Brazil (in 2 aging and 15 abandoned nests). The 14 active, 1 aging and 2 abandoned nests bore no isopods. The oniscideans were Atlantoscia rubromarginata, an undescribed species of Atlantoscia (Philosciidae), Pudeoniscus birabeni, P. obscurus (Pudeoniscidae) and Neotroponiscus carolii (Bathytropidae). Of the 146 individuals collected, 122 were A. rubromarginata. Due to the absence of isopods in active nests, these terrestrial isopods are considered termitariophilous.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Termitariophilous; Nasutitermes; Atlantoscia.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300393

Flutuações mensais na abundância dos Charadriidae e Scolopacidae da praia da Ilha Comprida, São Paulo, Brasil
Provedor de dados: 49
Autores: Barbieri,Edison; Delchiaro,Roberta Tonolli Chiavone; Branco,Joaquim Olinto.
Foram registradas as freqüências de ocorrências e as flutuações mensais das famílias Charadriidae e Scolopacidae ao longo de um transecto de 70 km de praia entre o Boqueirão Sul e o Boqueirão Norte na Ilha Comprida, estado de São Paulo, durante o período de um ano (Janeiro a dezembro de 2010). Um total de 12.153 indivíduos de aves foram contados com a maior abundância ocorreu entre outubro e abril e a mais baixa entre maio a setembro. Das 20 espécies registradas as mais abundantes foram Charadrius semipalmatus, Charadrius colaris, Vanellus chilensis e Tringa flavipes. As menos abundantes foram Tryngites subruficolis, Limosa haemastica,Tringa melanoleuca e Actitis macularia. Dezesseis espécies eram migrantes do Hemisfério Norte, duas migrantes do Hemisfério...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Flutuação mensal; Ilha Comprida; Scolopacidae; Charadriidae.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300268

Diversidade e riqueza de formigas (Hymenoptera: Formicidae) em remanescentes de Mata Atlântica na Bacia Hidrográfica do Alto Tietê, SP
Provedor de dados: 49
Autores: Suguituru,Silvia Sayuri; Souza,Débora Rodrigues de; Munhae,Catarina de Bortoli; Pacheco,Renata; Morini,Maria Santina de Castro.
O objetivo deste estudo foi descrever a diversidade, composição e a similaridade da fauna de formigas entre sete remanescentes de Floresta Ombrófila Densa da Bacia Hidrográfica do Alto Tietê. Dois desses remanescentes pertencem à Unidades de Conservação, quatro estão sob proteção e um fragmento pertence à propriedade particular. Em cada área foram coletadas 50 m2 de serapilheira, que foram submetidas à extratores do tipo mini-Winkler, onde permaneceram por 48 h. Todas as coletas ocorreram no período chuvoso. No total foram registradas 11 subfamílias, 44 gêneros e 158 morfoespécies/espécies de formigas. As espécies mais frequentes em todas as áreas foram Pheidole sp.7, Solenopsis sp.1, Hypoponera sp.1 e Strumigenys denticulate. O maior valor de diversidade...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Comunidades de formigas; Serra do Itapeti; Serapilheira; Floresta Ombrófila Densa; Inventário.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200141

The influence of seasonality on fish life stages and residence in surf zones: a case of study in a tropical region
Provedor de dados: 49
Autores: Santana,Fábio Magno da Silva; Severi,William; Feitosa,Caroline Vieira; Araújo,Maria Elisabeth de.
Resident fishes and their seasonal use of a surf zone were characterized and identified in the Jaguaribe beach, located on the Island of Itamaracá, state of Pernambuco, northeastern Brazil. Monthly towings (March 2006 to February 2007) with a beach seine net (20 m long, 1.5 m high, 5 mm mesh size) in different moon phases and periods of the day (day and night) were conducted. A total of 6,407 specimens, 35 families and 90 species were recorded. Seven species were considered as annual residents (Anchoa tricolor, Anchoviella lepidentostole, Bairdiella ronchus,Larimus breviceps, Lycengraulis grossidens, Polydactylus virginicus and Pomadasys corvinaeformis), three resident throughout the dry season (Conodon nobilis, Lile piquitinga andMenticirrhus americanus)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ichthyofauna; Itamaracá; Sandy beach; Juvenile fish.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300181

Physalis angulata L. (Solanaceae): a potential host-plant of stink bugs Edessa meditabunda F. (Hemiptera, Pentatomidae)
Provedor de dados: 49
Autores: Krinski,Diones.
Physalis angulata is native to South America. In Brazil is popularly known as camapú, balãozinho, juá-de-capote, bucho-de-rã, camambu, mata-fome, bate-testa and balão-rajado. Even being a species with wide ecological adaptation the studies on pest insects associated with these plants are incipient. Thus, this study reports for the first time the occurrence of stink bugs Edessa meditabunda on plants P. angulata in the Amazon region.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Insect-pest; Plant-reservoir; Stink bug wing-black; Neotropical region.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200336

Arbuscular mycorrhizal colonization in Asteraceae from white sand savannas, in Pinar del Río, Cuba
Provedor de dados: 49
Autores: Rodríguez-Rodríguez,Raquel Milagros; Herrera,Pedro; Furrazola,Eduardo.
Asteraceae family shows a great diversity in Cuba and presents threatened taxons in high number. Pinar del Río has 19 threatened species belonging to this family and three of them are characteristic of a sandy (quartzitic) soil at the Reserva Florística Manejada San Ubaldo-Sabanalamar (Floristic Reserve San Ubaldo-Sabanalamar). The arbuscular mycorrhizal status and colonization rate in Aster grisebachii, Erigeron bellidiastroides, Erigeron cuneifolius, Pectis juniperinaand Sachsia polycephala (Asteraceae) from this Reserve was determined in October 2009 and April 2010, during hydrologic rainy and dry period, respectively. All species were mycotrophic in both periods with a high percentage of colonization rates, between 66 and 100% in rainy period and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Internal morphology; Paris-type; Arum-type; Intermediate type; Quartzitic sands; Dark septate endophytes.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300136

A new species of Omphale Haliday 1833 (Hymenoptera: Eulophidae) from Brazil, parasitic on gall-midges on Croton floribundus Spreng (Euphorbiaceae)
Provedor de dados: 49
Autores: Gomes,Gabriela Cristina; Franco,Maíce Siqueira; Hansson,Christer.
A tritrophic relationship involving the plant Croton floribundusSpreng (Euphorbiaceae), an unidentified gall-midge belonging to eitherClinodiplosis Kieffer 1895 or Alycaulus Rübsaamen 1916 (Diptera: Cecidomyiidae), and a new species of parasitic wasp belonging toOmphale Haliday 1833 (Hymenoptera: Eulophidae) is described. The gall andOmphale japii sp. nov., are described and illustrated. This is the third record ofOmphale from Brazil and the new species is compared to otherOmphale species from the Neotropical region.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gall-maker; Cecidomyiidae; Parasitoid; Tritrophic interaction; Neotropical.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300034

Biodiversidade de mosquitos (Diptera: Culicidae) nos parques da cidade de São Paulo I
Provedor de dados: 49
Autores: Medeiros-Sousa,Antônio Ralph; Ceretti-Junior,Walter; Urbinatti,Paulo Roberto; Natal,Delsio; Carvalho,Gabriela Cristina de; Paula,Marcia Bicudo de; Fernandes,Aristides; Mello,Maria Helena Silva Homem de; Oliveira,Rosane Correia de; Orico,Lilian Dias; Gonçalves,Elisabeth Fernandes Bertoletti; Marrelli,Mauro Toledo.
Diante da escassez de informações sobre mosquitos (Diptera: Culicidae) na cidade de São Paulo, foi proposto um projeto para estudar esse grupo de insetos nas áreas verdes representadas pelos parques municipais da cidade. Foram investigados 35 desses parques distribuídos nas regiões sul, norte e centro-oeste da cidade, entre outubro de 2010 e fevereiro de 2011 em período diurno. Os imaturos foram coletados dos criadouros por meio de conchas entomológicas e bomba de sucção e os adultos foram capturados em seus abrigos por aspirador elétrico (bateria de 12V). A identificação e catalogação de espécimes foram feitas no Laboratório de Entomologia da Faculdade de Saúde Pública, Universidade de São Paulo. Nesta primeira fase do projeto, coletou-se um total de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodiversidade; Culicídeos; Mosquitos; Parques.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100030

Anuros da Estação Ecológica de Santa Bárbara, um remanescente de formações abertas de Cerrado no estado de São Paulo
Provedor de dados: 49
Autores: Araujo,Cybele de Oliveira; Corrêa,Décio Tadeu; Santos,Selma Maria de Almeida.
Apesar de São Paulo ser o estado do país que possui o maior conhecimento sobre sua fauna de anuros, ainda persistem consideráveis vazios amostrais, sobretudo nos remanescentes de Cerrado do estado. Somente 0,5% deste bioma encontram-se protegidos por unidades de conservação no estado e os fragmentos remanescentes sofrem ameaças que incluem o isolamento, risco de incêndios e invasão por espécies vegetais exóticas. Neste contexto, o objetivo deste estudo foi gerar informações sobre as espécies de anuros presentes na Estação Ecológica de Santa Bárbara, um dos poucos remanescentes com formações abertas de Cerrado da bacia hidrográfica do Médio Paranapanema. O levantamento das espécies foi realizado mensalmente entre outubro/2008 a março/2009, totalizando 30...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anfíbios; Anura; Conservação; Inventário; Águas de Santa Bárbara.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300230

A search for predators and food selectivity of two native species of Hydra (Cnidaria: Hydrozoa) from Brazil
Provedor de dados: 49
Autores: Massaro,Fernanda Cristina; Negreiros,Natalia Felix; Rocha,Odete.
The Hydra is the most common representative of freshwater cnidarians. In general, it is found in freshwaters on every continent, with the exception of Antarctica. The aim of the present study is to gather biological and ecological data on aspects of two species of Hydra native to Brazil: Hydra viridissima and Hydra salmacidis. Predation and food selectivity experiments were performed to assess the possible predators and the prey preferences, respectively, of the two species. The results indicate that the two species of Hydra were not consumed by any of the predators that were tested, which are typical predators of invertebrates in freshwater: nymphs of Odonata Anisoptera and the phantom midge larvae of Chaoborus sp. (Insecta), adults of Copepoda Cyclopoida...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hydra viridissima; Hydra salmacidis; Predation; Prey selection; Feeding.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200035

Inventory and distribution of Oligochaeta (Annelida, Clitellata) in first-order streams in preserved areas of the state of Minas Gerais, Brazil
Provedor de dados: 49
Autores: Rodrigues,Luciana Falci Theza; Leite,Felipe Silveira; Alves,Roberto da Gama.
Data resulting from species inventories shed light on the richness and distribution of various groups. In Minas Gerais, work on inventory and distribution of the oligochaetes of lotic environments in preserved areas are non-existent. Therefore, this study aimed to inventory the limnic oligochaetes fauna of first-order streams located in four preserved areas, to expand knowledge of the ecology and distribution of this group. In total, 19 taxa were inventoried, belonging to the families Naididae and Enchytraeidae and the superorder Megadrili (earthworms), with the genus Pristina having the largest number of species. The number of species found in this investigation corresponds to 22% of oligochaetes species recorded in Brazilian aquatic environments. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodiversity; Rock Fields; Atlantic Forest; Naididae; Litter; Oligochaetes; Enchytraeidae.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100024

Composição taxonômica e distribuição de anuros no Alto e Médio Paranapanema, estado de São Paulo
Provedor de dados: 49
Autores: Araujo,Cybele de Oliveira; Matsukuma,Ciro Koiti; Santos,Selma Maria de Almeida.
A fauna de anuros do estado de São Paulo pode ser considerada a mais conhecida no país. No entanto, ainda existem consideráveis lacunas amostrais no estado, sobretudo em remanescentes de vegetação natural das bacias hidrográficas do rio Paranapanema. Neste sentido, o objetivo deste estudo foi reunir informações sobre a composição taxonômica, distribuição e o status de conservação dos anuros no Alto e Médio Paranapanema, auxiliando na identificação dos municípios que ainda permanecem como vazios amostrais deste táxon nestas bacias hidrográficas. Dos 91 municípios avaliados, apenas 15 (16%) podem ser classificados como relativamente bem amostrados, tendo sido estudados por longos períodos e vários pesquisadores. Registrou-se um total de 124 espécies de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anfíbios; Mata Atlântica; Cerrado; Conservação; Inventário; Bacias hidrográficas do rio Paranapanema.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300241

Diversidade de moluscos em riachos de uma região de encosta no extremo sul do Brasil
Provedor de dados: 49
Autores: Sá,Roger Lopes de; Santin,Luciani; Amaral,Aline Monique Blank do; Martello,Alcemar Rodrigues; Kotzian,Carla Bender.
Moluscos de riachos de uma região de encosta, no extremo sul do Brasil (Bacia do Rio Toropi) foram inventariados através de coletas conduzidas em 40 locais, com altitudes variando entre 70 e 500 metros. Ao todo, 18 espécies foram encontradas, representadas predominantemente por gastrópodes (11 espécies, 89,5% dos indivíduos). Potamolithus catharinae e Uncancylus concentricus foram as espécies dominantes. A última espécie também foi a melhor distribuída, estando presente em 81% dos locais amostrados. Entre os bivalves, apenas a espécie asiática invasora Corbicula fluminea foi abundante, mas ocorreu em um único local de coleta. Cerca de quatro espécies foram raras, estando representadas por não mais que três indivíduos. Apenas duas espécies de Unionoida...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Moluscos límnicos; Zona ritral; América do Sul; Gastrópodes; Bivalves.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300213

Gall-inducing insects from Campos de Altitude, Brazil
Provedor de dados: 49
Autores: Coelho,Marcel Serra; Carneiro,Marco Antônio Alves; Branco,Cristina; Borges,Rafael Augusto Xavier; Fernandes,Geraldo Wilson.
Gall-inducing insects are very specious in vegetations of southeastern Brazil. Our goal was describe the gall richness by characterizing their external forms and their patterns of occurrence on host plants. Samples were collected from Campos de Altitude at four regions of the Mantiqueira Range: 1) Parque Estadual da Serra do Brigadeiro, 2) Parque Nacional do Caparaó, 3) Parque Estadual do Ibitipoca, 4) Parque Nacional do Itatiaia. We found 93 gall species within 13 families, 30 genera and 50 host plant species. We recorded 38 gall species in Parque Estadual da Serra do Brigadeiro, 21 in Parque Nacional do Caparaó, 23 in Parque Estadual do Ibitipoca and 20 in Parque Nacional do Itatiaia. Asteraceae represented 33% of the species collected, followed by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodiversity; Biogeography; Herbivory; Host plant; Altitude.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400139

Turbelários límnicos (Platyhelminthes) em ecossistemas de arroz irrigado da Planície Costeira do sul do Brasil
Provedor de dados: 49
Autores: Vara,Dioneia Conceição da; Leal-Zanchet,Ana Maria.
Turbellarians occur in a variety of wetlands, being also abundant in temporary water bodies. Several turbellarians are top predators in their microhabitats, many of them feeding on zooplankton. However, they are seldom taken into account in biodiversity studies. Information on turbellarian diversity in Brazilian freshwater ecosystems mainly came from taxonomical studies. In southern Brazil, there are a high number of wetlands, most of them represented by rice fields. Despite their impact on natural areas, these managed ecosystems can play an important role in freshwater biodiversity conservation. The aim of the present work was to report on an inventory done in irrigated rice fields of three areas of the Coastal Plain of southern Brazil, viz. Cachoeirinha,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microturbellarians; Triclads; Diversity; Inventory; Temporary wetlands.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400241

Aquatic oligochaetes associated with bryophytes in an Atlantic Forest stream
Provedor de dados: 49
Autores: Rodrigues,Luciana Falci Theza; Santana,Lucas Deziderio; Alves,Roberto da Gama.
There are few reports in the literature about the colonization of benthic macroinvertebrates on bryophytes. The aim of the present study was to analyzed the oligochaetes established on bryophytes adhered to stones in a first-order stream. The collections were carried out in an Atlantic Forest fragment area during the dry and rainy seasons. We identified 15 taxa from a total of 422 oligochaetes specimens, of which the most abundant were Pristina sp.1, Enchytraeidae and Pristina jenkinae. Unlike other habitats, where the abundance of macroinvertebrates tends to be greater in the dry season, we did not find any significant differences in the abundance, richness, composition and diversity between the two periods. The results of this study indicate that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lotic environments; Preserved areas; Mosses; Hepatics; Naididae.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400371

Cladocerans (Crustacea, Anomopoda and Ctenopoda) from Cerrado of Central Brazil: Inventory of phytophilous community in natural wetlands
Provedor de dados: 49
Autores: Sousa,Francisco Diogo Rocha; Elmoor-Loureiro,Lourdes Maria Abdu; Mendonça-Galvão,Luciana de.
The aim of this study was to inventory the cladoceran fauna in wetlands located in two large areas that protect fragments of Cerrado. Located in the Brasília National Park-DF and Campo de Instrução de Formosa-GO, these wetlands are formed by upwelling groundwater, with extensive vegetation cover. We found 24 species in the Brasília National Park and 30 in the Campo de Instrução de Formosa. The observed richness reached approximately 80% of the estimated values for both protected areas. Moreover, the community of cladocerans in the kind of environment studied appears to be influenced by depth, with higher values of richness and similarity in wetlands of higher average depths. However, shallow wetlands contributed to the total richness with exclusive...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: High Paraná River Basin; High São Francisco River Basin; Protected areas; Richness; Shallow wetlands.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300222

Orchid Bees of forest fragments in Southwestern Amazonia
Provedor de dados: 49
Autores: Storck-Tonon,Danielle; Morato,Elder Ferreira; Melo,Antonio Willian Flores de; Oliveira,Marcio Luiz de.
Bees of the tribe Euglossini are known as orchid-bees. In general, areas with more vegetation cover have greater abundance and diversity of these bees. This study investigated the effects of forest fragmentation on assemblages of the euglossine bees in the region of Rio Branco municipality, State of Acre, and surrounding areas. Ten forest fragments with varying sizes were selected for the study and were classified as urban or rural. The bees were sampled between December 2005 and August 2006. A total of 3,675 bees in 36 species and 4 genera were collected. In general abundance and richness of bees did not differ statistically between urban and rural fragments. The index of edge in fragments was a predictor of richness and diversity of bees. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Euglossini; Conservation; Diversity; Acre State.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100015

REGISTRO DE UN MERO NEGRO ADULTO, HYPORTHODUS NIGRITUS (PERCIFORMES: EPHINEPHELIDAE), EN UN ARRECIFE PROFUNDO DEL CARIBE COLOMBIANO*
Provedor de dados: 50
Autores: Bustos-Montes,Diana; Viaña-Tous,Jorge; Acero P.,Arturo; Pardo,Elkin R; Garrido,Manuel; Rueda,Mario; Alonso,David.
The Warsaw grouper (Hyporthodus nigritus) has been reported from the western Atlantic between Massachusetts (United States) and Mexico, including a few South American reports to Brasil. In Colombia a juvenile specimen was reported from nearby Cartagena in 2003. Herein, we report an adult fish caught near to deep-water reefs in the Golfo de Morrosquillo, Colombian Caribbean.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Hyporthodus nigritus; Warsaw grouper; Deep-water reefs; Colombian Caribbean.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612013000200012

FORAMINÍFEROS BENTÓNICOS RECIENTES EN LAS AGUAS PROFUNDAS DE LA CUENCA DE PANAMÁ: ECOLOGÍA Y SU POSIBLE RELACIÓN CON LAS CORRIENTES DE FONDO
Provedor de dados: 50
Autores: Patarroyo-Camargo,Germán David; Martínez-Rodríguez,José Ignacio.
Se examina aquí la relación entre los foraminíferos bentónicos recientes y las corrientes de fondo en aguas profundas de la cuenca de Panamá (Pacífico colombiano), al igual que se discuten los principales controles ecológicos que determinan su distribución. El estudio de los foraminíferos bentónicos en 24 muestras superficiales (core-top) y su integración con información previa muestra que en zonas de surgencia o con alto aporte de material terrígeno, las asociaciones están dominadas por formas infaunales detritívoras como Uvigerina, Bolivina, Globobulimina y Chilostomella, y taxa indicadoras de alta productividad como Uvigerina peregrina Cushman y Epistominella spp. En contraste, sobre los flancos de las dorsales de Cocos y Carnegie, las asociaciones...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Corrientes de fondo; Cuenca de Panamá; Ecología; Foraminíferos bentónicos recientes.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612013000100002

MICROANATOMY OF THE DIGESTIVE SYSTEM OF ENTEROCTOPUS MEGALOCYATHUS (CEPHALOPODA, OCTOPODA) OF THE SOUTHWEST ATLANTIC
Provedor de dados: 50
Autores: Griselda Garri,Rosana; Lauria de Cidre,Lilia.
A detailed description of the microanatomy of the digestive system of Enteroctopus megalocyathus is given, and this revealed some differences between this octopod species and other species of Octopodidae previously described. These differences are mainly related to tissues lining the lumen of digestive organs. Unlike descriptions in some octopods mucosa, in E. megalocyathus a pseudostratified epithelium is found covering the lumen of oesophagus, crop, stomach, intestine and caecum. Another major finding is that in the posterior salivary glands, two cell types are present in the same tubular adenomere; they do not constitute independent glandular tubules with only one type of glandular cells. The tubules of these glands are lined by two distinct epithelial...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Histology; Digestive organs; Cephalopods; Southwest Atlantic; Enteroctopus megalocyathus.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612013000200003

ABUNDANCIA Y MADUREZ SEXUAL DE ANADARA SIMILIS EN EL MANGLAR DE LUISICO, BAHÍA MÁLAGA, PACÍFICO COLOMBIANO*
Provedor de dados: 50
Autores: Manjarrés-Villamil,Alex E.; Lucero-Rincón,Carlos H.; Gualteros,William O.; Cantera-Kintz,Jaime R.; Gil-Agudelo,Diego L.
La abundancia y madurez sexual de la piangua Anadara similis fue analizada mensualmente entre septiembre de 2009 y agosto de 2010 en el archipiélago de La Plata, Bahía Málaga, Pacífico colombiano. La madurez sexual se analizó a nivel macroscópico mediante la observación del tejido reproductivo en fresco y microscópico por medio de métodos histológicos estándares. Se estimó una densidad media de 0.130 ± 0.098 ind/m² y una talla media de 42.30 ± 5.00 mm. Los meses de mayor densidad fueron mayo (0.295 ind/m²) y agosto (0.195 ind/m²). La talla media de madurez sexual fue de 41.8 ± 4.5 mm y talla media de 41 mm donde 50% de la población ha tenido mínimo un desove (L50%). Se registraron picos máximos reproductivos durante marzo (83.3%) y abril (75.0%), aunque...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anadara similis; Madurez sexual; Densidad; Hermafroditismo; Estructura de tallas.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612013000200001

MORFOLOGÍA DEL SISTEMA DIGESTIVO DE LA RAYA MARIPOSA GYMNURA MICRURA (BATOIDEA: GYMNURIDAE)
Provedor de dados: 50
Autores: Kobelkowsky,Abraham.
Con el objeto de conocer la organización morfológica del sistema digestivo de la raya mariposa Gymnura micrura, se colectaron 23 ejemplares con red de arrastre en lagunas costeras y el litoral del estado de Veracruz en el golfo de México. Las muestras se fijaron en formaldehído y se conservaron en alcohol etílico. En el laboratorio, se realizó el análisis anatómico de los componentes del tracto digestivo y de sus glándulas anexas. Así mismo se llevó a cabo la comparación con especies representativas de las familias Rhinobatidae, Rajidae, Urotrygonidae y Dasyatidae, permitiendo reconocer que la organización general del sistema digestivo de G. micrura corresponde al patrón morfológico general de Batoidea. Sin embargo, se identificaron como diferencias...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Batoidea; Gymnura; Morfología; Sistema digestivo; Dimorfismo sexual dentario.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612013000100003

RELACIONES TRÓFICAS DE CINCO ESPECIES DE PECES DE INTERÉS COMERCIAL EN LA BAHÍA DE CARTAGENA, CARIBE COLOMBIANO
Provedor de dados: 50
Autores: Cogua,Pilar; Jiménez-Reyes,María F.; Duque,Guillermo.
Cartagena Bay is a highly productive habitat which supports important aquatic communities and is considered an estuarine environment. During the sampling season, five commercial fish were captured: ladyfish (Elops smithi), machuelo (Opisthonema oglinum), mullet (Mugil incilis), sea bass (Centropomus ensiferus), and corvina (Cynoscion jamaicensis), all which stomach contents were analyzed. From all the fish captured, 82.6% presented contents in their stomachs, which were separated into 57 items, such as benthic microalgae, dinoflagellates, cyanophytes, sponges, mollusks, annelids, crustaceans, and fish. According to the Importance Relative Index (IRI), E. smithi, C. ensiferus, and C. jamaicensis were classified as third order consumers, O. oglinum as a...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Trophic characterization; Cartagena Bay; Estuary; Lepidophagy.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612013000100012

PRIMER REGISTRO DE MEDUSAS DEL GÉNERO LYCHNORHIZA (CNIDARIA: SCYPHOZOA: RHIZOSTOMEAE: LYCHNORHIZIDAE) EN EL MAR CARIBE COLOMBIANO
Provedor de dados: 50
Autores: Cedeño-Posso,Cristina María; Lecompte Pérez,Orlando Pedro.
This paper reports for the first time in Colombia the jellyfish Lychnorhiza sp., aff. L. lucerna, based on seventeen individuals collected in front of Isla de Rosario (Magdalena). This jellyfish is one of the most common inhabitants in coastal waters from southeastern Brazil to northern Argentina, but it was not recorded yet from the Caribbean coast of Colombia.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Jellyfish; Lychnorhizidae; Lychnorhiza lucerna; First record; Colombian Caribbean.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612013000200009

CONFLICTOS NORMATIVOS ASOCIADOS CON EL DERECHO DE PROPIEDAD DE LAS COMUNIDADES INDÍGENAS Y AFRO EN ÁREAS DE BOSQUES, ZONA COSTERA DE COLOMBIA*
Provedor de dados: 50
Autores: Villa Porto,Claudia; Sierra-Correa,Paula Cristina.
La puesta en marcha de la estrategia de las Naciones Unidas de "Reducción de emisiones por deforestación y degradación forestal evitada (REDD)" como medida de mitigación a los efectos del cambio climático en áreas de bosques de Colombia, encuentra soporte para su implementación en los convenios internacionales de los cuales el país hace parte. Algunos pasos de la metodología aplicable en proyectos REDD presenta conflicto con el marco jurídico vigente en Colombia, referido a la propiedad colectiva de las comunidades indígenas y afro que habitan o hacen uso de los bienes y servicios ambientales de los bosques que interesan a procesos REDD. Se concluye que la jurisprudencia sobre aspectos costeros respecto a la de aprovechamiento de recursos forestales es...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cambio climático; REDD; Comunidades; Derechos comunes; Zona costera.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612013000200005

NOTES ON THE ECOLOGY OF THE COLOMBIAN LEAFTOED GECKO (PHYLLODACTYLUS TRANSVERSALIS), ENDEMIC TO MALPELO ISLAND
Provedor de dados: 50
Autores: López-Victoria,Mateo; Jurczyk,Matthias; Wolters,Volkmar.
The Colombian leaf-toed gecko (Phyllodactylus transversalis) is the least known reptile species of Malpelo Island (Eastern Tropical Pacific). In the 37 years since its original description, no single study strictly dedicated to this species has been conducted. With the goal of providing information on the ecology and population size of this gecko, data collected during two visits to the island are presented. Behavior and reproduction were studied by following individuals during the night and by searching for hidden individuals and eggs during the day. Population's density and habitat preferences were estimated by classifying the island's surfaces into four types and counting geckos inside those habitats within band transects. General morphological...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phyllodactylus transversalis; Behavior; Reproduction; Habitat preference; Population size.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612013000200006

INVENTARIO DE LARVAS DE PECES REGISTRADAS PARA EL CARIBE COLOMBIANO*
Provedor de dados: 50
Autores: Medellín-Mora,Johanna; Polanco F.,Andrea; Navas S.,Gabriel R.
Se presenta el listado taxonómico de los estadios larvales de especies de peces registrados para el Caribe colombiano producto de una extensa revisión bibliográfica de los trabajos realizados en el tema. Se encontraron registros de 85 familias incluidas en 21 órdenes, con un total de 129 especies. A nivel de composición, el orden Perciformes presentó el mayor número de familias (41), géneros (66) y especies (46). Las familias Carangidae y Exocoetidae presentaron la mayor riqueza. En términos de distribución, se evidenció una mayor concentración de esfuerzos de muestreo en los departamentos de La Guajira, Magdalena y San Andrés y Providencia.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Larvas de peces; Mar Caribe colombiano; Lista de chequeo; Ictioplancton; Colombia.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612013000200002

MOLUSCOS ASOCIADOS A ENSAMBLAJES MACROALGALES EN EL LITORAL ROCOSO DE CÓRDOBA, CARIBE COLOMBIANO
Provedor de dados: 50
Autores: Quirós Rodríguez,Jorge; Campos,Néstor Hernando.
La composición y abundancia de la comunidad bentónica de moluscos asociada a ensamblajes macroalgales fueron estudiadas en dos ecorregiones de la franja costera del departamento de Córdoba, Caribe colombiano. Entre septiembre de 2006 y junio de 2007 fueron realizados cuatro muestreos en seis estaciones; tres en San Antero, dos en Puerto Escondido y una en Los Córdobas. Para la recolección de los especímenes se delimitó un cuadrante de 625 cm² con cinco repeticiones dispuestas al azar en cada estación. Se recolectaron un total de 1012 especímenes y 68 especies de moluscos fueron identificadas (46 gastrópodos, 19 bivalvos, dos poliplacóforos y un escafópodo). Las especies más abundantes en la ecorregión Morrosquillo fueron Bittiolum varium (34.95%),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Moluscos; Ensamblajes macroalgales; Franja costera; Ecorregiones; Caribe colombiano.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612013000100006

EMISIÓN DE METANO Y ÓXIDO NITROSO DE LOS SEDIMENTOS DE MANGLAR DE LA CIÉNAGA GRANDE DE SANTA MARTA, CARIBE COLOMBIANO
Provedor de dados: 50
Autores: Betancourt-Portela,Julián Mauricio; Parra,Juan Pablo; Villamil,Carlos.
En Colombia existe muy poca información sobre la función de los manglares en relación con los gases de efecto invernadero (GEI), sus tasas de liberación bajo diferentes condiciones ambientales o su papel en el ciclo global del carbono. Por tales razones, en este estudio se evaluaron los flujos de CH4 y N2O, en cuatro sectores de la Ciénaga Grande de Santa Marta (CGSM) con diferentes grados de conservación de sus bosques de mangle, para determinar su función como fuente o sumidero de GEI. Los flujos se midieron por el método de cámaras estáticas y mostraron variaciones entre 34.7-1179.7 y nd-31569.2 µg.m-2.h-1 para el N2O y CH4 respectivamente., demostrando que los sedimentos de manglar de la CGSM son una fuente neta de estos gases; además fueron de la...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gases de efecto invernadero; Flujo de metano; Flujo de óxido nitroso; Manglares.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612013000100008

LA CLASE CAUDOFOVEATA (MOLLUSCA) EN EL MAR CARIBE COLOMBIANO*
Provedor de dados: 50
Autores: Gracia C.,Adriana; Fontalvo,Erlenis; Gámez,Luis Carlos.
Five classes of marine mollusks, including Gastropoda, Bivalvia, Cephalopoda, Scaphopoda, and Polyplacophora, have been recorded inhabiting the Colombian Caribbean Sea. Other classes with a basal position within the phylum such as Caudofoveata and Solenogastres have remained overlooked, as a result of their body shape (worm-like with no shell), small sizes (Caudofoveata 1.5 to 140 mm length), and limited taxonomic information for identifications. The presence of Caudofoveata species on the continental margin of the Colombian Caribbean Sea was evidenced through several studies conducted by Invemar between 2007 and 2012. Samples were collected from localities between Gulf of Morrosquillo and La Guajira, in a bathymetrical range from 3 to 1010 m depth. These...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Biodiversity; Mollusks; Colombian Caribbean; Soft bottoms.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612013000200013

PATRONES DE DISTRIBUCIÓN ESTACIONAL DE MASAS DE AGUA EN LA BAHÍA DE SANTA MARTA, CARIBE COLOMBIANO: IMPORTANCIA RELATIVA DEL UPWELLING Y OUTWELLING*
Provedor de dados: 50
Autores: Mancera-Pineda,José Ernesto; Pinto,Gerfried; Vilardy,Sandra.
Con el propósito de generar un modelo conceptual de distribución estacional de masas de agua para la bahía de Santa Marta, se identificaron a lo largo del ciclo anual los patrones de las principales variables bióticas y abióticas relacionadas con la calidad de sus aguas. El modelo propuesto revela la gran influencia que ejerce la descarga de aguas residuales domésticas durante los períodos lluviosos (outwelling). Estas entradas explican la reducción de la transparencia del agua, el oxígeno disuelto y al mismo tiempo el aumento en la concentración de fosfatos y clorofila a. Si bien no hay estratificación a nivel de distribución vertical de nutrientes, existen diferencias en la distribución de la energía lumínica y consecuentemente la producción primaria se...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Patrones estacionales; Calidad del agua; Bahía de Santa Marta; Caribe colombiano.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612013000200007

AMPLIFICACIÓN CRUZADA DE MICROSATÉLITES PARA ESTUDIOS POBLACIONALES DE DOS ESPECIES DE CAMARÓN DEL GÉNERO LITOPENAEUS EN COLOMBIA
Provedor de dados: 50
Autores: Fresneda-Rodríguez,Adriana; Chasqui-Velasco,Luis; Alonso-Carvajal,David.
Los microsatélites son marcadores moleculares usados con frecuencia en estudios de genética de poblaciones, aunque su desarrollo es un proceso costoso y prolongado dada su elevada especificidad. Un método que permite ahorrar tiempo y dinero es la amplificación cruzada, que consiste en amplificar el ADN de una especie determinada (especie objetivo) utilizando cebadores que han sido diseñados para una especie diferente (especie fuente). Usando este método se evalúo la idoneidad de 15 loci microsatélites, desarrollados para las especies Litopenaeus setiferus y L. vannamei, para estudiar regiones microsatélites de L. schmitti y L. occidentalis. Cinco cebadores son adecuados para amplificar consistentemente microsatélites polimórficos en L. schmitti y cuatro en...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amplificación cruzada; Marcadores moleculares; Litopenaeus schmitti; Litopenaeus occidentalis; Microsatélites.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612013000100007

COMPORTAMIENTO CIRCADIANO DEL GASTERÓPODO NERITA SCABRICOSTA EN EL INTERMAREAL ROCOSO DE ISLA LA PALMA, PACÍFICO COLOMBIANO
Provedor de dados: 50
Autores: Flórez-Jaramillo,Luz Ángela; Cuéllar,José Luis.
We studied the circadian behavior during the foraging activity of the gastropod Nerita scabricosta at low tide. To measure the behavior we recorded the traveled distance and corresponding duration during foraging activity, according to the dial periods (day and night) in April 2010. Gastropods were measured and weighed after finishing their activity. Finally, values of air temperature and humidity were recorded for each sampling time and dial period. The foraging activity by N. scabricosta did not vary significantly between day and night. However duration increased at night, period characterized by lower temperature and higher humidity. In addition, it was found that the activity was continuous, regardless the period.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Circadian behavior; Nerita scabricosta; Physiological stress.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612013000100010

EVOLUCIÓN Y FACTORES DETERMINANTES DE LA HUELLA ECOLÓGICA DE LA PESCA DE CAMARÓN BLANCO (LITOPENAEUS OCCIDENTALIS) EN EL PACÍFICO COLOMBIANO
Provedor de dados: 50
Autores: Vargas-Morales,Myriam; Rueda,Mario; Maldonado,Jorge.
El indicador fishprint es una adaptación del concepto de la huella ecológica, a través del cual se obtiene una medida agregada de la presión ejercida sobre los ecosistemas marinos por la práctica de la pesca. Como complemento a indicadores específicos pesqueros existentes en el país, se buscó con el fishprint una evaluación más ecosistémica del impacto de la pesca en Colombia, desarrollando un primer ejercicio de análisis sobre la pesca de camarón blanco (Litopenaeus occidentalis), en el Pacífico colombiano. Para tal efecto, se calculó el fishprint usando una serie de tiempo que incluyó las capturas comerciales de la pesquería de camarón blanco (industrial y artesanal) entre 1956 y 2010. Posteriormente, se modeló econométricamente su evolución, con el fin...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Huella ecológica; Fishprint; Camarón blanco; Impacto de la pesca; Fauna acompañante.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612013000100009

AMBIENTES MARINOS DE LA PLATAFORMA SOMERA DE LA GUAJIRA, CARIBE COLOMBIANO*
Provedor de dados: 50
Autores: Chasqui,Luis; Nieto,Ramón; Rodríguez-Rincón,Angélica; Gil-Agudelo,Diego L.
A brief description of seven benthic environments found in La Guajira's shallow continental shelf from Boca de Camarones to Cabo de la Vela between 3 to 20 m depth is presented. Cover percentage of main benthic components, organic matter proportion in sediment, and main organisms observed in each environment are listed. The dominant environment was "arenal" (sandy bottom) covering 47% of total area sampled, whereas most species were observed in the environments "fondo mixto" (mixed bottom), "cascajo compuesto" (composed gravel) and "corales y esponjas sobre cascajo" (corals and sponges on gravel).
Tipo: Info:eu-repo/semantics/report
Palavras-chave: La Guajira; Shallow continental platform; Benthic environments; Species richness.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612013000200011

PRIMER REGISTRO PARA EL CARIBE COLOMBIANO DE PORPITA PORPITA (LINNAEUS) (HYDROZOA: PORPITIDAE)
Provedor de dados: 50
Autores: Rico,Lina; Baigorri,Álvaro; Lecompte,Orlando Pedro.
Two specimens of Porpita porpita were captured in Playa Blanca, Gaira Bay and the species reported for the first time in the Colombian Caribbean. This paper collects bibliographic information about blue button (Hydrozoa: Porpitidae) hydroid colony.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Hydroid colony; Porpita porpita; Blue button; Playa Blanca.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612013000100011

INFLUENCIA DE LA DENSIDAD LARVAL INICIAL DE SIEMBRA Y LA CONCENTRACIÓN DE ALIMENTO SOBRE LA LARVICULTURA DE ARGOPECTEN NUCLEUS (OSTREOIDA: PECTINIIDAE)
Provedor de dados: 50
Autores: Acosta Ortiz,Ernesto; Gómez-León,Javier.
Aun cuando Argopecten nucleus es un pectínido nativo del Caribe colombiano que presenta gran potencial para cultivo, su producción a gran escala se enfrenta con la escasez de semilla en el medio natural. Por tal motivo, la producción de semilla en el laboratorio es la fuente más prometedora. Dentro de los numerosos estudios que se han realizado al respecto, no se ha logrado un consenso sobre la alimentación y densidad larval durante el cultivo. El presente estudio determinó el efecto conjunto de la densidad inicial de siembra y de la ración alimenticia, utilizando tres densidades (5, 10 y 15 larvas mL-1) y tres concentraciones de microalgas Isochrysis galbana (20000, 40000 y 70000 células mL-1). Se evaluó la supervivencia larval, el crecimiento, la...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Argopecten nucleus; Densidad; Alimento; Supervivencia; Crecimiento.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612013000100004

IDENTIFICACIÓN DE FUENTES TERRESTRES DE CONTAMINACIÓN Y CÁLCULO DE LAS CARGAS DE CONTAMINANTES EN EL ÁREA DE INFLUENCIA DE LA CIÉNAGA GRANDE DE SANTA MARTA, CARIBE COLOMBIANO
Provedor de dados: 50
Autores: Vivas-Aguas,Lizbeth Janet; Espinosa,Luisa Fernanda; Parra Henríquez,Luis Gerardo.
La Ciénaga Grande de Santa Marta (CGSM) es la laguna costera más importantes del Caribe colombiano. Es un ecosistema estratégico para la conservación de la biodiversidad mundial, declarado Reserva de la Biósfera y Sitio Ramsar. No obstante, es también considerada una región ambientalmente perturbada por amenazas naturales y antropogénicas que aumentan la contaminación y afectan la calidad ambiental del ecosistema. Con el propósito de tener información que contribuya al diagnóstico de la contaminación de la CGSM y su seguimiento ambiental, se evaluaron las fuentes terrestres contaminantes de este complejo lagunar en el período 1997-2006 y se calcularon las cargas de contaminantes que transportan el río Magdalena y los tributarios que bajan de la Sierra...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fuentes terrestres de contaminación; Residuos domésticos; Vertimientos; Contaminación hídrica; Caribe colombiano.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612013000100001

MORFOLOGÍA EXTERNA Y TERMINOLOGÍA PARA LAS ESPECIES DE MUNIDA (CRUSTACEA: ANOMURA: MUNIDIDAE) DEL ATLÁNTICO Y PACÍFICO ORIENTAL TROPICAL*
Provedor de dados: 50
Autores: Navas S,Gabriel R; Bermúdez Tobón,Adriana; Campos C.,Néstor Hernando.
El género Munida es uno de los más diversos en especies de la superfamilia Galatheoidea, y uno de los crustáceos decápodos más diversos y abundantes en la plataforma y talud superior del Caribe y Pacífico colombianos. El estudio morfológico de las especies del género evidenció problemas taxonómicos debidos principalmente a la no consideración de la correspondencia topológica de algunos de los caracteres diagnósticos de las especies, la confusión en su nomenclatura y la pobreza de muchas de las descripciones existentes. En este trabajo se propone una estandarización de la nomenclatura de los diferentes caracteres morfológicos externos basada en su correspondencia topológica en la mayoría de las especies de Munida presentes en el Atlántico y Pacífico...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Munida; Munididae; Galatheidae; Morfología; Taxonomía.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612013000200004

COMPORTAMIENTO DE LOS RENDIMIENTOS ECONÓMICOS DE LA PESQUERÍA ARTESANAL DE LA CIÉNAGA GRANDE DE SANTA MARTA Y EL COMPLEJO DE PAJARALES, CARIBE COLOMBIANO
Provedor de dados: 50
Autores: Zamora-Bornachera,Anny P.; Meza-García,Ana G.
En el período comprendido entre "antes" (1994-1996) y "después" (1999-2004) de las obras hidráulicas, se evaluó el comportamiento de los rendimientos económicos de la pesquería artesanal multiflota de la Ciénaga Grande de Santa Marta y Complejo de Pajarales, a partir de las Unidades Económicas de Pesca (UEP) más utilizadas en el área de estudio, tales como atarraya, trasmallo y boliche. Se observaron, espacial y temporalmente, diferencias significativas en la renta económica por tipo de UEP, siendo la atarraya y el boliche las UEP que presentaron diferencias entre sitio y años, mientras que el trasmallo solo presentó diferencias entre años. Lo anterior, es producto de los cambios biofísicos que ha sufrido el sistema lagunar por las diferentes...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ciénaga Grande de Santa Marta; Complejo de Pajarales; Pesquería artesanal; Economía pesquera; Renta económica.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612013000100005

PRIMER REGISTRO DE MEDUSAS DEL GÉNERO LYCHNORHIZA (CNIDARIA: SCYPHOZOA: RHIZOSTOMEAE: LYCHNORHIZIDAE) EN EL MAR CARIBE COLOMBIANO
Provedor de dados: 50
Autores: López-Sánchez,Marcela; Perdomo,Shirly; Pineda,María Camila; Díaz-Aragón,Germán R; Ahrens,Michael J.
This paper reports the detection of Pseudothyone belli on submerged hard substrates at three sites in Santa Marta during port surveys conducted in March and October 2010. Owing to its high adaptive and competitive capability, it appears likely that the species has established itself in the Colombian Caribbean.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Pseudothyone belli; Dendrochirotida; Sclerodactylidae; Santa Marta.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612013000200010

EFECTO DE LA SALINIDAD EN LA SUPERVIVENCIA Y CRECIMIENTO DE CRÍAS DE CABALLITO DE MAR HIPPOCAMPUS REIDI GINSBURG EN CAUTIVERIO
Provedor de dados: 50
Autores: Melo-Valencia,Andrés Felipe; Ospina-Salazar,Gloria Helena; Gómez-León,Javier; Cortés-Pineda,Fabián Andrés.
This study was conducted to determine the optimal salinity for the culture of H. reidi fry during the first month of life, evaluating the effect of different salinities (27, 30, 33, and 36) on its growth and survival. The fry were distributed at three ind.L-1 density in 12 L incubators, animals were fed ad libitum throughout the experiment, survival was monitored daily, and height and weight were measured both at the beginning and end of the experiment. The salinity did not show significant differences between treatments, the highest survival rate was obtained at 27 with 17.59 ± 6.99%.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Salinity; Growth; Survival; Hippocampus reidi; Fry.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612013000100013

INVERTEBRADOS MARINOS ASOCIADOS CON LAS PLATAFORMAS DE GAS EN LA GUAJIRA (CARIBE COLOMBIANO)*
Provedor de dados: 50
Autores: Gracia C.,Adriana; Cruz,Norella; Borrero,Giomar; Báez,Diana Patricia; Santodomingo,Nadiezhda.
El desarrollo industrial y económico de Colombia se ha expandido en la búsqueda de nuevos recursos minerales hacia los límites del mar territorial. La prospección y construcción de infraestructuras en el mar plantean nuevos retos para el desarrollo sostenible del país. Este estudio de línea base se realizó con el fin de conocer las especies de invertebrados marinos que se han establecido sobre las únicas plataformas permanentes para la explotación de gas ubicadas mar afuera en La Guajira, al norte del Caribe colombiano: plataformas A y B, construidas sobre fondos de 18 y 33 m de profundidad, respectivamente. Por medio de buceo autónomo Scuba, se recolectaron e identificaron 116 especies de invertebrados marinos. Los crustáceos presentaron la mayor riqueza...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sustratos artificiales; Biofouling; Macrofauna; Caribe colombiano; Inventarios de especies.
Ano: 2013
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612013000200008

Diversidad de helechos y licofitas del Parque Nacional Calilegua, provincia de Jujuy, Argentina
Provedor de dados: 51
Autores: Ganem,María Alejandra; Ramos Giacosa,Juan Pablo; Luna,María Luján; Arana,Marcelo Daniel; Rotman,Alicia; Ahumada,Osvaldo; De La Sota,Elías Ramón; Giudice,Gabriela Elena.
La provincia biogeográfica de las Yungas es considerada por la UNESCO como una de las Reservas de la Biosfera. El Parque Nacional Calilegua es uno de los "core" de estas Yungas, donde los helechos y licofitas crecen en diferentes ambientes como epifitos, terrestres o saxicolas. El objetivo de este trabajo es dar a conocer los helechos y licofitas que habitan en el Parque Nacional Calilegua, con el fin de contribuir a la información sobre la biodiversidad en las Yungas y aportar a su conservación. El estudio se realizó teniendo en cuenta el material colectado en viajes de campo por diferentes zonas del Parque, durante los meses de diciembre a mayo de los años 2007 a 2011. Asimismo, se consultaron distintos herbarios nacionales y bibliografía específica. Se...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodiversidad; Helechos; Licofitas; Parque Nacional Calilegua; Yungas.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000300017

Karyotypic studies in wild species of Arachis (Leguminosae) belonging to sections Erectoides, Procumbentes and Rhizomatosae
Provedor de dados: 51
Autores: Ortiz,Alejandra M; Silvestri,María C; Lavia,Graciela I.
Karyotypes of three diploid species belonging to sections Erectoides (Arachis hermannii), Procumbentes (A. rigonii) and Rhizomatosae (A. burkartii) were analyzed by Feulgen's technique. The karyotype formula was different in each of the taxa analyzed: 2n=2x=16m+4sm in A. hermannii, 2n=2x=18m+2sm in A. rigonii, and 2n=2x=20m in A. burkartii. All species had a pair of satellited chromosomes, which corresponded to type 2 in A. hermannii, type 9 in A. rigonii, and type 8 in A. burkartii. Arachis hermannii and A. rigonii presented chromosomal features similar to those of the other species included in their respective sections. However, A. burkartii showed chromosome characteristics different from those found in the rest of the species of section Rhizomatosae.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arachis hermannii; A. rigonii; A. burkartii; Chromosomes; Phylogenetic relationships.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000200010

Características morfológicas y anatómicas de las plántulas de Trichocereus candicans (Cactaceae)
Provedor de dados: 51
Autores: Cenizo,Viviana J; Mazzola,Mónica B; Corró Molas,Bárbara M; Kin,Alicia G.
El objetivo del presente trabajo fue analizar el desarrollo morfológico y las características anatómicas de las plántulas de Trichocereus candicans (Gillies ex Salm-Dyck) Britton &amp;amp; Rose, una especie de cactus columnar ampliamente distribuida en regiones áridas y semiáridas de Argentina. Durante los primeros 30 días desde la germinación, se registran en las plántulas los mayores cambios morfológicos. La raíz presenta abundantes pelos radicales y un patrón de crecimiento definido. La epidermis es uniestrata con células de contorno ondulado, estomas de tipo paralelocítico e inclusiones minerales en forma de drusas. El xilema presenta traqueidas de banda ancha con paredes celulares anilladas y helicoidales. Se observaron plántulas con crecimiento...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Trichocereus candicans; Morfología; Anatomía; Plántula; Cactáceas.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000300007

Effect of aqueous and alcohol extracts of Phytolacca tetramera (Phytolaccaceae) leaves on Colletotrichum gloeosporioides (Ascomycota)
Provedor de dados: 51
Autores: Hernández¹,Marcelo; Murace,Mónica; Ringuelet,Jorge; Petri,Inés; Gallo,Daniel; Arambarri,Ana.
Phytolacca tetramera Hauman "ombusillo" is an endemism of southeastern Buenos Aires province (Argentina). This species has fungicidal action against opportunistic pathogens of humans. In order to search natural alternatives for the control of diseases in plants caused by fungi, the objective was to evaluate the effects of aqueous and alcohol extracts of P. tetramera leaves on Colletotrichum gloeosporioides (Penz.) Sacc. This fungus has a wide distribution in different species with agricultural, forestry, and ornamental value. The antifungal activity of aqueous and ethanol leaf extracts was assessed in vitro against fungi. The fungus was subjected to two types of extracts already incorporated into the Potato Dextrose Agar (PDA) medium at 5-50%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antifungal activity in vitro; Biological control; Ombusillo; Phytolaccaceae; Saponins.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000200003

Amorphous silica biomineralizations in Schoenoplectus californicus (Cyperaceae): their relation with maturation stage and silica availability
Provedor de dados: 51
Autores: Fernández Honaine,Mariana; Borrelli,Natalia L; Osterrieth,Margarita; Del Rio,Luis.
The factors involved on the silicifcation process in Cyperaceae are scarcely known. In this study we analyse the effect of maturation stage and silica availability on the production of amorphous silica biomineralizations in culms of Schoenoplectus californicus. Young and senescent culms were collected from ponds with different silica availability. Two complementary methodologies (calcination and staining techniques), light and scanning electron microscopy and EDS were applied for amorphous silica analyses in plants. Quantitative data were analysed by Kruskal-Wallis and a two-way ANOVA tests. There were no signifcant differences between silica content of culms collected in ponds with different silica availability. Instead, silica content in senescent culms...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sedge; Silicophytoliths; Senescence; Aerenchyma; Culms; Ponds; SE Buenos Aires province.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000200006

Novedades Nomenclaturales en "Tipos Grisebachianos
Provedor de dados: 51
Autores: Ariza Espinar,Luis.
El estudio de tipos Grisebachianos de CORD ha permitido aclarar la identidad de dos nombres dudosos o no bien conocidos. Se realiza una nueva combinación en Byttneria.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Argentina; Tipos Grisebachianos; Byttneria.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000300021

Arbuscular mycorrhizal associations and dark septate endophytes in Yacon (Smallanthus sonchifolius) and a wild relative (Smallanthus macroscyphus)
Provedor de dados: 51
Autores: Mercado,Maria I; Coll Aráoz,Maria V; Brandán De Weht,Celia I; Ponessa,Graciela I; Grau,Alfredo.
Mycorrhizal associations in Smallanthus sonchifolius (Poepp. &amp;amp; Endl.) H. Robinson (Asteraceae), Yacon, an ancient Andean crop and Smallanthus macroscyphus (Baker ex Martius) A. Grau, wild yacon, a close wild relative are described for the frst time. Yacon fbrous roots growing under feld conditions have high levels of colonization by arbuscular mycorrhizal fungi (86 %). Other fungi colonizing roots included dark septate endophytes (45 %) and unidentifed fungi that are probably saprophytic (25 %) were observed. Only 9% of the samples analyzed were not colonized by any type of fungi. Glomus, Acaulospora, Scutellospora, Gigaspora and Pacispora were the main genera of arbuscular mycorrhiza identifed. A similar high degree of mycorrhizal colonization was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Smallanthus sonchifolius; Smallanthus macroscyphus; Mycorrhizas; Arbuscular mycorrhizas; Dark septate endophytes.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000200002

El efecto del fuego y las características topográficas sobre la vegetación y las propiedades del suelo en la zona de transición entre bosques y pastizales de las sierras de Córdoba, Argentina
Provedor de dados: 51
Autores: Giorgis,Melisa A; Cingolani,Ana M; Cabido,Marcelo.
En el contexto actual de cambio climático, el estudio de la dinámica de las zonas de transición entre bosques y pastizales tiene un papel fundamental, tanto a nivel científico como en la planificación del manejo de los ecosistemas. En este trabajo evaluamos el efecto combinado del fuego, la exposición de ladera y la posición topográfica sobre la vegetación y los suelos en una zona de transición entre bosques y pastizales en las montañas de Córdoba. Para ello elegimos cuatro áreas con diferentes edades post-fuego. En cada sector seleccionamos todas las combinaciones posibles de exposición y posición topográfica. En cada sitio realizamos un relevamiento florístico completo y analizamos una muestra compuesta de suelo. El tiempo transcurrido después del último...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bosque serrano; Composición florística; Ecotono; Fisonomía; Límite de bosques; Montañas.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000300011

Factores que afectan la germinación de Trichocereus candicans (Cactaceae)
Provedor de dados: 51
Autores: Mazzola,Mónica B; Cenizo,Viviana J; Kin,Alicia G.
La humedad y la temperatura son factores que determinan la germinación de las cactáceas. En este estudio se evaluaron los efectos de disponibilidad de agua y la temperatura sobre la germinación de Trichocereus candicans, especie endémica de amplia distribución en Argentina. Se simularon potenciales agua a 0, -0.1, -0.4, -0.7 y -1.0 MPa y los tratamientos de temperatura incluyeron 15, 20, 25, 30, 35, 20/10, 25/15 y 30/20°C. Se analizó el porcentaje, la tasa y el tiempo medio de germinación. Las semillas requieren para germinar alta disponibilidad de agua (0 y -0.1 MPa) y los porcentajes se reducen significativamente a potenciales menores de -0.4 MPa. La especie germinó en el rango de temperaturas analizado ya sean constantes o alternas, y los mayores...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Trichocereus candicans; Germinación; Cactáceas.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000300012

Sobre la presencia de Amaranthus palmeri (Amaranthaceae) en Argentina
Provedor de dados: 51
Autores: Morichetti,Sergio; Cantero,Juan José; Núñez,César; Barboza,Gloria E; Ariza Espinar,Luis; Amuchastegui,Andrea; Ferrell,Jason.
Amaranthus palmeri, especie nativa de Estados Unidos de Norte América y México, se cita por primera vez para la fora adventicia argentina sobre la base de ejemplares coleccionados principalmente en la provincia de Córdoba, además de San Luis y La Pampa. Se describe e ilustra la especie y se menciona su distribución geográfca.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amaranthus palmeri; Argentina central; Fora adventicia.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000200016

Juan Pablo Lewis 1937 - 2012
Provedor de dados: 51
Autores: Prado,Darién E.
Tipo: Info:eu-repo/semantics/article
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000100014

Hongos asociados con dos poblaciones de Acromyrmex lobicornis (Formicidae) de San Luis, Argentina
Provedor de dados: 51
Autores: Lugo,Mónica A; Crespo,Esteban M; Cafaro,Matías; Jofre,Laura.
Los géneros Atta y Acromyrmex comprenden a las hormigas cortadoras o podadoras de hojas de la tribu Attini, único grupo de hormigas que presenta una dependencia obligada con simbiontes fúngicos como fuente de alimento. Los fragmentos de plantas recolectados por estas hormigas son utilizados para cultivar al simbionte fúngico, el que origina gongilidios de los cuales se alimentan las larvas y la reina de la colonia. El objetivo de este trabajo fue aislar y caracterizar genómica y taxonómicamente los hongos cultivados por dos poblaciones de Acromyrmex lobicornis de la provincia de San Luis. Para ello, se recolectaron muestras del simbionte de las cámaras de cultivo más superficiales de los nidos y se cultivaron en los medios de extracto de malta (EM) y agar...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acromyrmex lobicornis; Centro de Argentina; Hormigas podadoras; Leucoagaricus gongylophorus; Simbionte fúngicos de hormigas.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000100001

Tipos de plantas vasculares conservados en el herbario Mendoza Ruiz Leal (MERL)
Provedor de dados: 51
Autores: Méndez,Eduardo; Azpillaga,María Estela.
Se da a conocer un catálogo de materiales tipos de Gymnospermae y Angiospermae (Monocotyledoneae y Dicotyledoneae) depositados en el Herbario Mendoza Ruiz Leal (MERL), Argentina. La colección de estas plantas vasculares está representada por 30 familias, 68 géneros y 143 especies (116 específicas y 27 infraespecíficas: =1 subespecie, 24 variedades y 2 formas). Las familias Poaceae y Asteraceae poseen en conjunto el 26,5% y 43,3 % del total de géneros y especies. Los géneros de Stipeae son los que tienen el mayor número de especímenes (38). El análisis incluye una lista de los nombres originales ordenados alfabéticamente, con los nombres actuales de los autores, la cita original, la categoría del tipo y observaciones.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Argentina; Catálogo; Ejemplares tipos; Herbario MERL; Mendoza.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000100011

Comportamiento germinativo y potencial forrajero de Setaria magna (Poaceae)
Provedor de dados: 51
Autores: Marinoni,Lorena Del R; Zabala,Juan M; De L. Exner,Eliana; Pensiero,José F.
Setaria magna Griseb. es una especie americana que crece en ambientes húmedos y pantanosos de agua dulce o salada. Es una gramínea anual y de ciclo estival, con plantas vigorosas en su ambiente natural. En el presente trabajo se evaluó su comportamiento germinativo y potencial forrajero. Se analizó la viabilidad de las cariopsis y su germinación con diferentes tratamientos de escarifcación y temperaturas provenientes de diversos ambientes y años de cosecha. Se caracterizaron morfológica y productivamente a campo, al estado vegetativo y reproductivo. Los resultados mostraron que la viabilidad de las cariopsis se mantiene durante el primer año para luego decrecer. Las cariopsis cubiertas no germinaron a ninguna de las temperaturas ensayadas, sugiriendo la...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Potencial forrajero; Germinación; Dormición; Productividad; Selección; Domesticación.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000200007

Indumento, nectarios extraflorales y anatomía foliar en Bignoniáceas de la Argentina
Provedor de dados: 51
Autores: Gonzalez,Ana M.
La presente contribución comprende el estudio comparativo de la anatomía foliar de 50 especies de Bignoniaceae que crecen en Argentina. El objetivo es analizar las variaciones anatómicas a fn de contribuir en la identifcación de las especies y evaluar los caracteres en la taxonomía de la familia. Las hojas fueron estudiadas en vista superfcial y en cortes seriados, transversales y paradermales, por medio de microscopía óptica y electrónica de barrido. Entre las características que se destacan por su valor diagnóstico se describen: posición y estructura anatómica de los nectarios extraforales, complemento tricomático, número de capas de la epidermis, tipo de mesóflo y la composición del margen de la hoja. Estas características, solas o en combinación pueden...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anatomía; Bignoniaceae; Tricomas; Nectarios extraforales; Paraveinal.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000200005

Pseudognaphalium fastigiatum (Compositae: Gnaphalieae) es el nombre correcto para P. cabrerae
Provedor de dados: 51
Autores: Bayón,Néstor D; Giuliano,Daniel A.
La nueva combinación Pseudognaphalium cabrerae (S.E. Freire) Deble fue propuesta en 2006 para denominar a la especie sudamericana Gnaphalium fastigiatum Philippi (1895), non Thunb. (1800), nec Schrank (1824), también llamada G. philippii Cabrera (1941), non Gand. (1918). Sin embargo, el nombre P. cabrerae es inválido bajo las reglas del CINB, siendo Pseudognaphalium fastigiatum indicado como el nombre correcto para este taxon.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Compositae; Gnaphalium; Pseudognaphalium; Nomenclatura.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000300020

Tolerancia in vitro de Fusarium solani y Fusarium semitectum (anamorfos, Ascomycota) a la exposición a desinfectantes de superfi cie utilizados en acuicultura
Provedor de dados: 51
Autores: Pacheco Marino,Suani G; Cabello,Marta N; Salibián,Alfredo.
Se evaluó in vitro el efecto del: acido acético (AcH), ácido acético tamponado (AcH+AcNa), ioduro de potasio (IK) y Iodopovidona (IP) sobre la tasa de crecimiento (TC) de Fusarium solani (Mart.) Sacc. 1881 y Fusarium semitectum Berk. &amp;amp; Ravenel, 1875. Ambas especies fueron aisladas de ovas de Odontesthes bonariensis (Cuvier &amp;amp; Valenciennes, 1835). Las sustancias estudiadas son comúnmente utilizadas en acuicultura como desinfectantes de superfcie. Las concentraciones ensayadas con actividad fungicida para ambas cepas fueron mucho más elevadas que las correspondientes concentraciones letales medias a 96 horas (CL50-96h) para ovas de pejerrey. Concentraciones inferiores a la CL50 - 96h exhibieron un efecto fungistático escaso o nulo.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ácido acético; Fungicidas; Inhibición del crecimiento in-vitro; Lodóforos; Ovas de Odontesthes bonariensis.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000200008

Floración de especies con potencial apícola en el Bosque Nativo Formoseño, Distrito Chaqueño Oriental (Argentina)
Provedor de dados: 51
Autores: Cabrera,Mirta; Andrada,Ana; Gallez,Liliana.
Con el propósito de inventariar y conocer el ritmo de floración de las especies vegetales de interés apícola, disponibles en la región del este del bosque nativo formoseño, se eligieron 14 apiarios y en cada uno de ellos se definió un área donde se realizaron los relevamientos de la vegetación. Durante las temporadas apícolas 2009-2012 se registró la floración de un total de 198 Angiospermae, de las cuales el 94,5% correspondieron a la flora nativa. Las familias con mayor diversidad de especies fueron Fabaceae, Asteraceae, Solanaceae, Sapindaceae y Polygonaceae. El período de floración se extendió desde mediados de agosto hasta principios de abril. La oferta máxima de floración se registró entre octubre y diciembre. En las tres estaciones de estudio se...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Recursos florísticos; Calendario de floración; Formosa.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000300010

Diatomeas de ambientes marinos costeros de Argentina: Especies del género Pleurosigma (Pleurosigmataceae)
Provedor de dados: 51
Autores: Sar,Eugenia A.; Sterrenburg,Frithjof A.S.; Lavigne,Andrea S.; Sunesen,Inés.
Este estudio está enfocado en el análisis de la morfología, taxonomía y distribución de las especies pertenecientes al género de diatomeas Pleurosigma W. Smith presentes en aguas marinas costeras de la Argentina. Las muestras de red fueron obtenidas en la capa superficial de la columna de agua en varias estaciones costeras de las provincias de Buenos Aires y Río Negro. Materiales procesados y no procesados fueron examinados con microscopía óptica y electrónica de barrido. Las especies determinadas fueron Pleurosigma decorum W. Smith, P. distinguendum Hustedt, P. inflatum Shadbolt, P. inscriptura M. A. Harper, P. normanii Ralfs y P. simonsenii Hasle. Dos nuevos taxa son erigidos. Pleurosigma patagonicum var. paucistriatum nov. var. es comparada con el...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aguas marinas costeras; Pleurosigma; Provincia de Buenos Aires; Provincia de Río Negro; Argentina; Taxonomía; Morfología.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000100002

Obituarios
Provedor de dados: 51
Tipo: Info:eu-repo/semantics/report
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000300023

Chusquea juergensii (Poaceae, Bambusoideae, Bambuseae), nueva cita para la Argentina
Provedor de dados: 51
Autores: Lizarazu,Mabel A; Areta,Juan I; Rúgolo De Agrasar,Zulma E.
Chusquea juergensii se cita por primera vez a para la Argentina, la especie se describe e ilustra, incluyendo un mapa con su distribución geográfca en América del Sur. En el noreste de la Argentina habitan además Chusquea ramosissima y C. tenella en simpatría con C. juergensii. Se presenta una clave identifcatoria de los tres taxones mencionados.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bambuseae; Chusquea; Noreste de la Argentina; Taxonomía.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000200015

Comparative wood anatomy of vegetative organs (stem and rhizome) of Sophora linearifolia (Sophoreae, Papilionoideae, Leguminosae)
Provedor de dados: 51
Autores: Pujana,Roberto R; Burrieza,Hernán P; Silva,Mariana P; Tourn,Graciela M; Castro,María A.
Wood anatomy of stem and rhizome of Sophora linearifolia, a rhizomatous plant endemic to centre Argentina, is described. Structural description of thin sections and macerations includes microphotographs of optical and scanning electron microscopy. Significant anatomical differences exist between secondary xylem of aerial orthotropic shoots and underground rhizome. Both organs have absent to indistinct growth ring boundaries, simple perforation plates, alternate and vestured intervessel pits and disjunctive parenchyma cell walls. However, stems have smaller vessels, longer fibres, partial storying (vessel elements and axial parenchyma) and narrower rays. Some anatomical characters of the rhizome suggest adaptations to its sinuous pattern of growth. The stem...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Secondary xylem; Endemic; Fabaceae; Argentina.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000300006

¿Existen especies de Navicula (Bacillariophyta) exclusivas de ambientes de alta montaña en Argentina?
Provedor de dados: 51
Autores: Seeligmann,Claudia; Maidana,Nora I.
Con el objetivo de analizar la distribución geográfica de 28 especies del género Navicula Bory sensu stricto identificadas en humedales de alta montaña en Argentina, se consultaron cinco catálogos disponibles, publicaciones no incluidas en esas obras y datos recabados en relevamientos inéditos realizados por nuestro equipo de trabajo, considerando la nomenclatura actual y los sinónimos de cada especie. Se reunió información procedente de más de 190 cuerpos de agua de Argentina, Bolivia y Chile, a partir de la cual se construyeron mapas utilizando el software DIVA-GIS, que permitieron visualizar la distribución de las especies y relacionarla con la altura sobre el nivel del mar de los sitios donde fueron encontradas. Solo cinco especies (el 18 % del total...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Navicula; Diatomeas; Biogeografía; Humedales de altura; Andes; Sudamérica.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000300005

Effect of pines removal and soil litter treatments in the restoration of natural grasslands invaded by Pinus halepensis
Provedor de dados: 51
Autores: Cuevas,Yannina Andrea; Zalba,Sergio Martín.
Effect of pines removal and soil litter treatments in the restoration of natural grasslands invaded by Pinus halepensis. Ernesto Tornquist Provincial Park (Sierra de la Ventana, Buenos Aires, Argentina) protects a remnant of pampean grasslands and is seriously threatened by the spread of alien woody plants, among them by Pinus halepensis. The effect that this species has on the structure and functioning of the ecosystem lead to the implementation of control actions aimed to reduce invasion. This work presents the results of monitoring the recovery of native grasslands after two control strategies: complete and partial removal of invasive trees, with and without complementary restoration actions (removal of needles, soil disturbance, addition of top-soil...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sierra de la Ventana; Mountain grasslands; Invasive alien species; Control.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000200012

Angélica M. Arambarri "Vasca" 1945 - 2012
Provedor de dados: 51
Autores: Saparrat,Mario C. N.
Tipo: Info:eu-repo/semantics/article
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000100013

Anatomía y desarrollo de la flor estaminada, microsporogénesis y microgametogénesis en especies de Lophophytum (Balanophoraceae) en la Argentina
Provedor de dados: 51
Autores: Sato,Héctor A; Gonzalez,Ana M.
Se estudió la anatomía y desarrollo de la flor estaminada, microsporogénesis y microgametogénesis de Lophophytum leandrii y Lophophytum mirabile subsp. bolivianum, a fin de aportar datos para el conocimiento y taxonomía del género. Las flores estaminadas se diferencian en número y ubicación de las piezas del perianto y en la forma de las anteras, siendo caracteres taxonómicos importantes. Las piezas periánticas están constituidas de parénquima fundamental cubiertas por una epidermis uniestratificada. La pared de la antera consta de epidermis, endotecio pluriestratificado (de doble origen), capa media y tapete tipo secretor uniestratificado (de origen dual). Las tétradas de microsporas son de tipo tetraédricas, los granos de polen son tricolpados,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lophophytum; Anteras; Endotecio; Perianto; Tapete; Tétradas; Lophophytum; Anther; Endothecium; Perianth; Tapetum; Tetrads.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000100004

Vernicia fordii y Aleurites moluccanus (Euphorbiaceae) en la Argentina. Naturalización y etnobotánica
Provedor de dados: 51
Autores: Keller,Héctor A; Stampella,Pablo C; Delucchi,Gustavo; Hurrell,Julio A.
Este trabajo constituye el primer registro de dos especies de Euphorbiaceae como naturalizadas en la Argentina: Vernicia fordii (Hemsl.) Airy-Shaw (Misiones) y Aleurites moluccanus (L.) Willd. (Misiones y Corrientes). Se incluyen sinonimias, descripciones, distribución y hábitat, fenología, utilidades, importancia local, datos etnobotánicos, estado de naturalización y material de referencia.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vernicia fordii; Aleurites moluccanus; Plantas oleaginosas; Naturalización; Flora Argentina; Misiones; Corrientes.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000300015

Mantillo de las especies leñosas de matorrales del NO de la Patagonia: abundancia, composición, estructura y heterogeneidad
Provedor de dados: 51
Autores: De Paz,Manuel; Gobbi,Miriam E; Raffaele,Estela.
El mantillo es un componente importante de los ecosistemas, que afecta tanto la dinámica de nutrientes como las condiciones de micrositio (e.g., radiación, temperatura y retención de humedad del suelo) y, en consecuencia, puede tener diferentes tipos de efectos sobre la regeneración de las especies. El objetivo de este trabajo fue estudiar, bajo el dosel de 15 especies leñosas, muy frecuentes en los matorrales del NO de la Patagonia, la abundancia, composición, estructura y heterogeneidad del mantillo y la producción de material senescente/año. El mantillo total acumulado varió entre 347,9 y 2534,7 gm-2. El mantillo y la producción de material senescente/año fue baja comparada con otros ecosistemas y similar a la del monte Patagónico. La heterogeneidad del...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Material senescente; Hojarasca; Caducifolias; Perennifolias.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000300013

Estudio palinológico en especies de Asplenium (Aspleniaceae) de Argentina
Provedor de dados: 51
Autores: Ganem,María Alejandra; Luna,María Luján; Giudice,Gabriela Elena.
El género Asplenium L. se halla representado en Argentina por cerca de 38 especies, siendo su hábito terrestre, saxícola o epífito. En la presente contribución se completa el estudio palinológico del género en este país. El material fue procesado de acuerdo a técnicas clásicas para su observación con microscopios óptico y electrónico de barrido. Las esporas son monoletes, la pared está conformada por el exosporio homogéneo de superficie lisa, y el perisporio camerado y plegado. Se distinguen dos tipos de pliegues: alados y lomados y se observa variabilidad en cuanto a la densidad de las perforaciones del estrato externo del perisporio, a los tipos de margen y los elementos esculturales de los pliegues y a las áreas entre pliegues. Se describen las esporas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Asplenium; Esporas; Morfología; Argentina.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000300009

Naturalización e identidad del "limón mandarina", Citrus x taitensis (Rutaceae, Aurantioideae) en la Argentina
Provedor de dados: 51
Autores: Stampella,Pablo C; Delucchi,Gustavo; Pochettino,M. Lelia.
Se cita por primera vez el "limón mandarina" (Citrus x taitensis Risso) como naturalizada en la Argentina sobre la base de ejemplares coleccionados en la provincia de Misiones. Se describe e ilustra la especie y se presentan aspectos relacionados a sus usos locales y manejo.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citrus x taitensis; Rutaceae; Pie de injerto; Naturalización; Usos y manejo locales.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000100012

(Zavalla, Santa Fe, Argentina) Floristic-structural analysis of spontaneous little forests in the J. F. Villarino park (Santa Fe, Argentina)
Provedor de dados: 51
Autores: Franceschi,Eduardo A; Boccanelli,Silvia I.
Floristic-structural analysis of spontaneous little forests in the J. F. Villarino park (Santa Fe, Argentina). The anthropization process in the Pampean grassland has brought about an increasing presence of trees. In this study we analyzed the structure and composition of little forests which have resulted from the spontaneous multiplication of tree species in the J. F. Villarino Park, in Zavalla, Province of Santa Fe, Argentina. Using a plot sampling method, individuals were counted to determine density per species in the upper and treelets strata. Height and DBH of individuals in the upper stratum were recorded. Abundance-coverage of herbaceous and woody species saplings was estimated in the lower stratum. Soil humidity and ground-level light intensity...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acer negundo; Exotic species; Invasive woody plants; Ligustrum lucidum; Native invasive species; Pampas trees; Patches.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000200011

Chlorococcales de la Amazonia Colombiana: II
Provedor de dados: 51
Autores: Echenique,Ricardo O; Núñez-Avellaneda,Marcela; Duque,Santiago R.
En el presente trabajo se registran 41 taxa, pertenecientes a las familias Coelastraceae, Chlorococcaceae, Radiococcaceae, Palmellaceae, Oocystaceae, Characiaceae, Treubariaceae, Botryococcaceae, Micractiniaceae e Hydrodictyaceae (orden Chlrorococcales) hallados en ríos y lagos de la cuenca de Amazonia Colombiana. Del total encontrado, 20 son nuevas citas para el país y 10 para la cuenca en Colombia. La familia mejor representada, en cuanto a riqueza específica, fue Oocystaceae con 10 taxa y en los lagos Yahuarcaca (Río Amazonas) se ha registrado el mayor número de taxa del orden.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazonia-colombiana; Chlorococcales; Taxonomía.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000300004

Agaricales del Chaco Oriental 1: Primer registro de Tetrapyrgos nigripes (Marasmiaceae) y Xeromphalina tenuipes (Mycenaceae) para la región
Provedor de dados: 51
Autores: Ramírez,Natalia A; Niveiro,Nicolás; Popoff,Orlando F.
Se describen e ilustran a Tetrapyrgos nigripes y Xeromphalina tenuipes, registros nuevos para la región del Chaco Oriental, de estas dos especies pantropicales. Tetrapyrgos nigripes se caracteriza por su píleo centralmente estipitado con esporas tetraédricas y pileipellis con estructuras rameales, mientras que X. tenuipes presenta el píleo amarillento a ocráceo anaranjado, laminillas amarillas más claras y estípite marrón rojizo cubierto por abundantes pelos que le dan un aspecto aterciopelado.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Basidiomycota; Hongos lignícolas; Reserva Natural Educativa Colonia Benítez; Diversidad.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000300002

Análisis fitolíticos en depósitos de ambientes fluviales del río Paraná en su sección media (Entre Ríos, Argentina)
Provedor de dados: 51
Autores: Patterer,Noelia Isabel; González,Carlos Adrián; Passeggi,Esteban; Zucol,Alejandro Fabián.
El presente trabajo define la composición fitolítica de distintos ambientes insulares de la región más austral del Paraná medio, estableciendo características florísticas y fluviosedimentarias del sistema planta-sustrato. El Paraná medio, se desplaza por una llanura aluvial (faja inundable compleja y de gran tamaño). Los análisis de fitolitos han mostrado ser una valiosa contribución para comprender el tipo de ambiente en que se desarrollaron los depósitos fluviales recientes, tanto para el estudio de los depósitos de fondo, como de los ambientes insulares vinculados. Se establecieron 6 estaciones, denominadas: Albardón viejo, Albardón intermedio, Albardón joven, Media loma, Pajonal y Bajo. El procesamiento se realizó mediante la técnica de Laboriau (1983)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Análisis fitolíticos; Río Paraná medio; Parque Nacional Predelta; Provincia de Entre Ríos.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000100006

Estudios citogenéticos en especies de Passiflora subgénero Passiflora (Passifloraceae)
Provedor de dados: 51
Autores: Chiapero,Ana Laura; Las Peñas,María Laura; Amela García,María Teresa; Bernardello,Gabriel.
Passiflora comprende alrededor de 525 especies con x = 9 ó 6. Se realizó un estudio citogenético de cuatro especies del subgénero Passiflora que crecen en la Argentina. Se utilizaron las técnicas de Giemsa, bandeo cromosómico fluorescente CMA/DAPI y FISH (sonda 18-5,8-26S y 5S) en cromosomas mitóticos. P. caerulea, P. tucumanensis y P. cincinnata resultaron diploides (2n = 18) mientras que P. mooreana, tetraploide (2n=36). Los cariotipos fueron altamente simétricos con la fórmula 8 m+ 1 sm, duplicada en P. mooreana. Con CMA/DAPI, todos los diploides presentaron dos o tres pares de bandas terminales CMA + /DAPI - , mientras que la especie tetraploide presentó cinco pares, asociadas a NOR. Con FISH, los loci 18-5,8-26S coincidieron en número y posición con...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Passiflora Cariotipos Heterocromatina ADNr 5S and 18-5; 8-26S.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000100007

Rediscovery and lectotypification of Dicranella lorentzii (Dicranellaceae, Bryophyta)
Provedor de dados: 51
Autores: Suárez,Guillermo M; Larraín,Juan; Schiavone,María M.
The rediscovery of fertile populations of Dicranella lorentzii (Müll.Hal.) Broth. allowed the detailed examination of this forgotten endemic taxon of NW Argentina, and its comparison with other South American species. We present a redescription of the species, together with its first illustration. A lectotype for this name is here designated.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aongstroemia; Argentina; Dicranaceae.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000100003

La Lanza del serpentario", origen mítico de Xylopia brasiliensis (Annonaceae), una versión de los Guaraníes Ava Chiripa de Misiones
Provedor de dados: 51
Autores: Keller,Héctor A.
Se transcribe y traduce un relato guaraní sobre el origen del árbol Xylopia brasiliensis. Los atributos sugerentes involucrados en el mito están asociados a la fgura de ciertas aves ofófagas y al probable empleo de los fustes de dicho árbol como astiles de arpones o de lanzas por parte de los antiguos guaraníes.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mitografía; Etnobotánica; Árbol nativo; Gavilán mixto; Estola.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000200017

Monvillea phatnosperma (Cactaceae), nueva cita para la Flora Argentina
Provedor de dados: 51
Autores: Oakley,Luis J; Mogni,Virginia Y; Prado,Darién E.
Se cita por primera vez para la Argentina a Monvillea phatnosperma (K. Schum.) Britton &amp;amp; Rose (Cactaceae), coleccionada en la provincia de Formosa. Se extiende además su área de distribución dentro del 'Gran Chaco', dado que sólo estaba registrada para Paraguay. Se realizan algunas consideraciones morfológicas, taxonómicas y nomenclaturales sobre la misma.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Monvillea phatnosperma; Cactaceae; Argentina; Chaco.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000300016

Biología reproductiva de tres especies simpátricas de Bignoniaceae en Argentina
Provedor de dados: 51
Autores: Torretta,Juan Pablo; Cerino,María Carolina.
La biología reproductiva de Handroanthus heptaphyllus, Tabebuia nodosa y Fridericia dichotoma (Bignoniaceae) fue estudiada en la reserva El Bagual, Provincia de Formosa, Argentina, para describir aspectos de la biología floral, recompensas florales, sistemas reproductivos, polinizadores y visitantes florales. Los resultados obtenidos revelan que las tres especies estudiadas son autoincompatibles, no autógamas y dependientes de polinizadores (abejas de tamaño mediano a grande). La formación de frutos en flores tratadas con polinización cruzada manual fue superior a la de las flores no tratadas (control); mientras que las flores auto-polinizadas no formaron frutos. El éxito reproductivo relativo fue bajo en las tres especies. Tales éxitos reproductivos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bignoniaceae; Polinización; Sistema reproductivo; Argentina.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000100005

Chloraea riojana (Chloraeinae-Orchidaceae), una nueva orquídea argentina
Provedor de dados: 51
Autores: Sobral,Ana; Novoa,Patricio.
Se describe una nueva especie de orquídea del género Chloraea, secc. Foliosae. Encontrada en provincia de La Rioja, representa el nuevo límite sur de distribución de la sección, presente desde el sudoeste de Perú hasta el noroeste de Argentina. Las diferencias significativas, morfológicas (de color del perigonio), fenológicas y la separación geográfica con las otras especies del género justifican la creación de este nuevo taxón. La diferencia más evidente con las especies afines (Chloraea praecincta Speg. et Kranzl. y Chloraea reticulata Schlechter) es el color de la lámina del labelo, amarillo intenso en la especie riojana y blanco en las dos afines. Asi mismo, presenta fosas nectaríferas (C. praecincta no tiene) y la columna es recta (la de C. reticulata...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chloraea; Flora nativa; La Rioja; Noroeste argentino; Nueva especie; Orquídea terrestre; Taxonomía.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000300019

Análisis cromosómico del híbrido Arachis pintoi x A. repens (Leguminosae) mediante citogenética clásica y molecular
Provedor de dados: 51
Autores: Pucciariello,Ornella; Ortiz,Alejandra M; Fernández,Aveliano; Lavia,Graciela L.
El análisis cariotípico fue realizado en las especies parentales Arachis pintoi y A. repens, y el híbrido interespecífico. Las tres entidades presentan la misma fórmula cariotípica (18m+2sm) y un par de cromosomas satelitados. Este par satelitado presenta un par de bandas proximales CMA+ que corresponden a la heterocromatina asociada a NORs, en coincidencia con la localización de loci ADNr 45S. El número de bandas DAPI+ identificadas oscilan entre 3 y 5 pares. El número de sitios ADNr 5S fue variable, con 4 en A. pintoi, 2 en A. repens y un número intermedio de 3 en el híbrido. Los resultados obtenidos demuestran similitudes cromosómicas entre las especies parentales, indicando que constituyen un grupo natural. Por otro lado, las tres entidades mostraron...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arachis; Caulorrhizae; Híbrido interespecífico; Análisis cariotípico; Grupo natural; Irregularidades meióticas.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000100008

Geastrum trichiferum and Geastrum setiferum (Geastrales, Phallomycetidae) new records for Argentina
Provedor de dados: 51
Autores: Castiglia,Valeria; Cinto,Isabel; Papinutti,Leandro.
In the present study two new records of Geastrum are reported for Argentina: G. trichiferum Rick and G. setiferum Baseia. Descriptions, comments and illustrations of basidiomata are given.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fungal morphology; Gasteromycetes; Mycobiota; Rain forest; Taxonomy.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000300001

Bauhinia variegata var. candida (Caesalpinioideae, Cercideae), nueva adventicia en las Yungas de Argentina
Provedor de dados: 51
Autores: Zapater,María A; Lozano,Evangelina C.
Este trabajo incluye el primer registro de una población adventicia de Bauhinia variegata var. candida en las Yungas de Argentina. Se describen e ilustran los ejemplares recolectados en las Selvas Pedemontanas de Orán, provincia de Salta.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bauhinia; Cesalpinoideae; Flora adventicia; Yungas; Argentina.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000300018

Hongos arbusculares (glomeromycota) en la rizosfera de atriplex l ampa en dos ambientes salinos de córdoba: influencia de la profundidad en la colonización radical y presencia de morfoespecies
Provedor de dados: 51
Autores: Soteras,Florencia; Cofré,Noelia; Bartoloni,José; Cabello,Marta; Becerra,Alejandra.
Atriplex lampa es un arbusto halófto de la provincia ftogeográfca Chaqueña que constituye un recurso forrajero a lo largo de todo el año. Las plantas halóftas se pueden benefciar al asociarse con los hongos micorrícico arbusculares (HMA), ya que le proveen resistencia contra la salinidad y la sequía. En general, los estudios acerca de los HMA están restringidos a los primeros centímetros del suelo y existe poca información sobre su presencia a mayores profundidades. El objetivo de este trabajo fue estudiar la colonización, la concentración radical e identifcar las morfoespecies de HMA en la rizosfera de A. lampa en dos ambientes salinos del norte de la provincia de Córdoba, durante dos estaciones del año, y en cinco profundidades del suelo. Aunque no se...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hongos micorrícico arbusculares; Suelos salinos; Atriplex lampa; Profundidad del suelo; Estacionalidad.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000200004

Carbono acumulado en la biomasa vegetal de la reserva de Villavicencio (Mendoza-Argentina)
Provedor de dados: 51
Autores: Zivkovic,Liliana; Martínez Carretero,Eduardo; Dalmasso,A; Almirón,M.
Las reservas naturales en las zonas áridas cumplen un papel destacado en el almacenamiento de carbono. La vegetación de la Reserva de Villavicencio acumula en total 98798 Mg (2,1 Mg/ha) de carbono; considerando la vegetación de la Puna y del Monte no quemado el 91,2% del carbono se encuentra en la parte aérea (hojas y tallo) y el 8,8 % restante en el sistema radical. La vegetación del Monte, caracterizada por el matorral de Larrea cuneifolia, acumula 77905 Mg (3,9 Mg/ha), 78,8% del carbono total del área. En el matorral no quemado las nanofanerófitas acumulan el 28,8%, en el área incendiada en el 2000 el 50,4% y en la quemada en el 2005 las caméfitas el 95,5%. En la vegetación del piso de la Puna, con 20893 Mg de carbono (0,78 Mg/ha) Almacenado, domina el...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carbono; Formas de vida; Área protegida.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000300014

Euphorbia weberbaueri (Euphorbiaceae), nuevo registro para Ecuador
Provedor de dados: 51
Autores: Cabrera-Cisneros,Omar; Prina,Aníbal Oscar.
Se registra una especie no citada previamente para Ecuador. Euphorbia weberbaueri Mansf., reportada como endémica del norte del Perú, se cita ahora para el sur del Ecuador; especímenes de la planta fueron colectados en dos enclaves de matorral seco de la Provincia de Loja (Catamayo y Saraguro) y en sitios de similares características de la provincia de Azuay. Se proporciona una breve descripción, un mapa de distribución potencial y se ilustra con fotografías de la especie.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ecuador; Euphorbia; Loja; Matorral Seco.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000100010

Comparación de técnicas para el aislamiento y recuento de levaduras y hongos dimórficos del filoplano de nothofagus pumilio
Provedor de dados: 51
Autores: Muñoz,Mario; Moliné,Martín; Libkind,Diego.
El floplano es un importante hábitat de microorganismos. Este trabajo tuvo como objetivo probar distintos métodos para el aislamiento de levaduras y hongos dimórfcos del floplano de Nothofagus pumilio, la especie arbórea dominante de Patagonia. Los métodos probados fueron la impresión sobre medio sólido, agitación vertical con agua durante distintos tiempos, con la adición de surfactante (Tween 80) o abrasivos (arena); macerado y ultrasonido. Se estableció un método que combina la agitación vertical con la aplicación de ultrasonido como metodología apropiada para el aislamiento y recuento. Con este método se determinó que la densidad de levaduras y hongos dimórfcos en el floplano de N. pumilio osciló entre las 10 y 10³ unidades formadoras de colonias sobre...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aureobasidium; Alta montaña; Lenga; Levaduras; Patagonia.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000200001

Lithospermum officinale, nuevo registro de Boraginaceae para Argentina
Provedor de dados: 51
Autores: Medina,Andrea A; Prina,Anibal O.
Se registra por primera vez para Argentina Lithospermum offcinale L. Se realiza una breve descripción de la especie, se proporciona fotografía de ejemplar analizado y clave para diferenciarla de otra especie cercana que crece en Argentina.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Argentina; Boraginaceae; Lithospermum; Nuevo registro.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000200013

Distribución temporal y espacial del polen de Araucaria angustifolia (Araucariaceae) en Misiones, Argentina
Provedor de dados: 51
Autores: Latorre,Fabiana; Alarcón,Pamela; Fassola,Hugo.
Araucaria angustifolia (Bertol.) Kuntze es una especie nativa de alto valor comercial que ha sido explotada indiscriminadamente; actualmente está en peligro crítico. Este trabajo inicia un programa de investigación aerobiológica sobre su fenología reproductiva en Misiones (Argentina). Se utilizaron muestreadores volumétricos continuos: uno fijo y otro portátil, variando la ubicación de este último entre 6 puntos de muestreo en dirección de los vientos predominantes. El período principal de polinación del año 2010 (90% del polen total) se extendió 30 días, acumulándose 23548 granos. La concentración diaria presentó un máximo entre las horas 10 y 14 siguiendo el patrón circadiano de las condiciones atmosféricas, con mínimos a las 22 y las 6 horas. También,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aerobiología; Producción y dispersión de polen; Condiciones meteorológicas; Fenología; Conservación; Pino Paraná.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000300008

Agricultura tradicional y riqueza de maíces (Zea mays): Estudio de Caso en Caspalá, provincia de Jujuy, Argentina
Provedor de dados: 51
Autores: Ramos,Rita S; Hilgert,Norma I; Lambaré,Daniela A.
En Caspalá, se cultivan maíces criollos tradicionales y maíces de incorporación más reciente. La riqueza actual es producto del uso, valoración y manejo de este recurso. Dicha valoración está, a su vez, asociada a las decisiones familiares que reflejan su cultura, tradición y cosmovisión. En este trabajo se analiza la riqueza de maíces cultivados actualmente en Caspalá, los cambios ocurridos en los últimos años, el uso de lo producido y el manejo del espacio agrícola disponible. Se realizaron entrevistas semiestructuradas a 37 (51%) familias de la comunidad. Se reportaron 23 etnotaxa (15 cultivados actualmente y 8 recordados), con un promedio de 6,61 etnotaxa sembrados por familia. Se identificaron como factores que influyen de modo positivo la riqueza de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cultivos locales; Etnobotánica; Trashumancia.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000300022

Sinopsis de los helechos y licofitos del Parque Nacional Mburucuyá (Corrientes, Argentina): Claves de especies
Provedor de dados: 51
Autores: Meza Torres,Esteban L; De La Sota,Elías R; Ferrucci,María S.
En el Parque Nacional Mburucuyá, Corrientes, Argentina, se registraron un total de 29 géneros y 48 taxones infragenéricos. El género mejor representado es Thelypteris Schmidel con cinco especies; seguido por Pecluma M. G. Price con cuatro; Anemia Sw., Doryopteris J. Sm. y Ophioglossum L. incluyen tres taxones infragenéricos, mientras que Adiantopsis Fée, Asplenium L., Azolla Lam., Pityrogramma Link, Pleopeltis Willd. y Salvinia Ség. están representados por dos especies. Los géneros restantes sólo cuentan con una especie. Se presentan claves dicotómicas para la determinación de las especies presentes en el área de estudio, como así también referencias de distribución y ecología.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Área protegida; Florística; Lycophyta; Polypodiopsida; Pteridophyta.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000100009

Líquenes Parmeli oides (Parmeli aceae, Ascomycota) del Parque Nacional Copo (Provincia de Santiago del Estero, Argentina)
Provedor de dados: 51
Autores: Adler,Mónica T.
Veintitrés especies de Parmeliaceae foliosas fueron coleccionadas en el Parque Nacional Copo y alrededores, sobre troncos y ramas en bosques vírgenes y secundarios de Aspidosperma quebracho-blanco y Schinopsis lorentzii, dos especies arbóreas conocidas como quebracho blanco y quebracho colorado respectivamente. Las especies se describen brevemente, incluyendo comentarios particulares y la distribución geográfica de cada una de ellas. Hypotrachyna aspera C. H. Ribeiro &amp;amp; Marcelli se menciona por primera vez para la Argentina. Doce especies se citan también por primera vez para la Provincia de Santiago del Estero. Se propone una clave para diferenciar las especies descriptas.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Parque Nacional Copo; Líquenes argentinos; Parmeliaceae; Hypotrachyna aspera.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000300003

Crecimiento y ramificación de Nothofagus alpina y Nothofagus obliqua (Nothofagaceae) bajo diferentes condiciones lumínicas
Provedor de dados: 51
Autores: Puntieri,Javier; torres,Cristian; Ghirardi,soledad.
Se compararon las características arquitecturales de ramas principales completas y de sus unidades de crecimiento (UC) en árboles de Nothofagus alpina y N. obliqua desarrollados en tres sitios con diferente nivel de sombreo natural (bajo: banquina, intermedio: vivero, y alto: sotobosque). Se evaluó la estructura jerárquica de las ramas principales mediante: (1) la relación entre el diámetro de las ramas secundarias y el de la rama principal portadora y (2) los ángulos formados entre ramas secundarias y ramas principales. Las ramas principales de los árboles del sotobosque presentaron UC más delgadas y cortas y con menos hojas y ramas que aquellas de los árboles menos sombreados. Estas diferencias disminuyeron para UC extendidas más recientemente. Con el...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arquitectura; Gradiente morfogenético Jerarquías Patrón de ramifcación Nothofagus alpina Nothofagus obliqua Tolerancia a la sombra Unidad de crecimiento.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000200009

Lectotipificaciones en Ophryosporus (Asteraceae, Eupatorieae, Critoniinae)
Provedor de dados: 51
Autores: Plos,Anabela; Sancho,Gisela.
Se tipifcan 10 nombres pertenecientes a especies de Ophryosporus, como una contribución nomenclatural a una próxima revisión taxonómica del género.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eupatorium; Nomenclatura; Piqueria; Stevia.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000200014

Etnobotánica en comunidades pastoriles: Conocimiento tradicional sobre especies tóxicas para el ganado en la cuenca del río Iruya (Salta, Argentina)
Provedor de dados: 51
Autores: Califano,Laura M.; Echazú,Fernando.
Se registra el conocimiento tradicional de la fora tóxica para el ganado en poblaciones campesinas de la cuenca del río Iruya (Dpto. Iruya y Sta. Victoria, Prov. Salta, Argentina); área que comprende ambientes transicionales de las provincias ftogeográfcas de Puna, Pre-puna y Yungas. Se realizaron entrevistas semi-estructuradas a productores ganaderos y promotores comunitarios de sanidad animal y talleres participativos con el objeto de registrar nombres locales y otros aspectos referidos a: ambientes, época de consumo, especies afectadas, sintomatología, tratamientos tradicionales, entre otros. Se colectaron ejemplares de herbario y se realizó un contraste bibliográfco sobre las especies recopiladas. Se registraron 11 especies vegetales tóxicas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fora tóxica; Etnobotánica; Etnoveterinaria; Sintomatología; Tratamientos tradicionales.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722013000200018

Desenvolvimento e validação de um sistema de recomendação de informações tecnológicas sobre cana-de-açúcar
Provedor de dados: 53
Autores: Barros,Flávio Margarito Martins de; Oliveira,Stanley Robson de Medeiros; Oliveira,Leandro Henrique Mendonça de.
Sistemas de informações tecnológicas exercem um papel fundamental na agricultura, pois proveem informações de forma rápida e eficiente, dando suporte a decisões estratégicas. No entanto, o excesso de informação disponível pode confundir e dificultar o acesso à informação desejada. Uma alternativa para amenizar esse problema é a adoção de sistemas que ofereçam recomendações automáticas de acordo com o perfil de uma comunidade de usuários. O objetivo deste trabalho foi desenvolver um sistema de recomendação, concebido a partir de técnicas de mineração de dados, para conteúdos relacionados à cultura da cana-de-açúcar. O modelo adotado foi o de listas de recomendação, que são regras de associação entre as páginas web visitadas, produzidas a partir dos dados de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Taxa de rejeição; Mineração de dados; Regras de associação; Informações tecnológicas agrícolas.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000400010

Taxonomia de solos desenvolvidos sobre depósitos sedimentares da formação Solimões no estado do Acre
Provedor de dados: 53
Autores: Bernini,Thiago de Andrade; Pereira,Marcos Gervasio; Fontana,Ademir; Anjos,Lúcia Helena Cunha dos; Calderano,Sebastião Barreiros; Wadt,Paulo Guilherme Salvador; Moraes,André Geraldo de Lima; Santos,Lauana Lopes dos.
Os solos do Estado do Acre na maioria são formados sobre material de origem com grande influência da orogênese Andina, com elevados teores de Ca2+, Mg2+ e Al3+ concomitantemente, associado às combinações diferenciadas dos valores da CTC, V e m. O objetivo deste trabalho foi caracterizar e classificar os solos de uma topossequência sobre material sedimentar da Formação Solimões, no município de Feijó, Acre. Foram abertas trincheiras em três pontos de uma topossequência: terço superior (P1), terço médio (P2) e terço inferior (P3). Os solos foram analisados quanto a morfologia, granulometria (areia, silte e argila), complexo sortivo (Ca2+, Mg2+, Na+, K+ e Al3+), acidez potencial (H+Al), P assimilável, pH (água e KCl), superfície específica, ataque sulfúrico...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazônia Ocidental; Pedogênese; Classificação; SiBCS.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000100010

Potassium silicate and calcium silicate on the resistance of soybean to Phakopsora pachyrhizi infection
Provedor de dados: 53
Autores: Cruz,Maria Fernanda; Rodrigues,Fabrício Ávila; Diniz,Ana Paula Cardoso; Moreira,Maurilio Alves; Barros,Everaldo Gonçalves.
The control of Asian Soybean Rust (ASR), caused by Phakopsora pachyrhizi, has been difficult due to the aggressiveness of the pathogen and the lack of resistant cultivars. The objective of this study was to evaluate the effects of spray of potassium silicate (PS) and soil amendment with calcium silicate (CS) on soybean resistance to ASR. The PS solution was sprayed to leaves 24 hours prior to fungal inoculation while CS was amended to the soil at thirty-five days before sowing. The infection process of P. pachyrhizi was investigated by scanning electron microscopy. The uredia on leaves of plants sprayed with PS were smaller and more compact than those observed on the leaves of plants grown in soil amended with CS or in soil non-amended with CS (control...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max; Biotrophic fungi; Scanning electron microscopy.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000400008

Resfriamento artificial na conservação da qualidade comercial de grãos de milho armazenados
Provedor de dados: 53
Autores: Quirino,José Ronaldo; Melo,Aniela Pilar Campos de; Veloso,Valquíria da Rocha Santos; Albernaz,Karina Cordeiro; Pereira,Jaqueline Magalhães.
O resfriamento artificial é uma ferramenta para conservação da qualidade de grãos nas regiões tropicais. Este trabalho foi realizado com o propósito de verificar o efeito da refrigeração artificial do ar, por meio de aeração, na preservação da qualidade de grãos de milho em armazém graneleiro horizontal, de fundo "V". Para o experimento foram utilizados dois septos, sendo um resfriado artificialmente (12ºC), com capacidade de 28 mil toneladas, e o outro aerado com ar natural, com capacidade de 29 mil toneladas. As amostragens foram realizadas, em ambos os septos, durante a carga, aos 60 e 120 dias após a primeira etapa de resfriamento e durante a expedição dos grãos. Durante o armazenamento, as amostragens foram realizadas considerando-se a posição e a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Armazenamento; Insecta; Refrigeração; Zea mays.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000400009

Silício alterando compostos derivados da pirólise de bainhas foliares de plantas de arroz infectadas por Rhizoctonia solani
Provedor de dados: 53
Autores: Schurt,Daniel Augusto; Rodrigues,Fabrício Ávila; Carré-Missio,Vivian; Soares,Nilda Fátima Ferreira.
Este trabalho teve como objetivo elucidar, por meio da pirólise analítica acoplada à cromatografia gasosa e espectrometria de massa, alterações na composição química da lignina nas bainhas de plantas de arroz das cultivares BR-Irga 409 e Labelle supridas ou não com silício (Si) e infectadas por Rhizoctonia solani. A concentração de Si nas bainhas das plantas supridas com esse elemento foi significativamente maior (2,7 dag kg-1) em comparação com as plantas não supridas (0,45 dag kg-1). Na presença de Si, a área abaixo da curva do progresso da queima das bainhas foi significativamente reduzida em 19 e 25%, respectivamente, para as plantas das cultivares BR-Irga-409 e Labelle em relação à ausência desse elemento na solução nutritiva. Com base nos espectros...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Queima das bainhas; Lignina; Metabólitos secundários; Resistência.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000100008

Adubação nitrogenada beneficia soja alagada
Provedor de dados: 53
Autores: Lanza,Luciana Nunes Menolli; Rossi,Sarita Carneiro; Sodek,Ladaslav.
RESUMO Este trabalho teve como objetivo comparar o desenvolvimento de cinco cultivares de soja produzidas no Estado de São Paulo, em situação de alagamento do sistema radicular, e avaliar a resposta das plantas ao nitrato nessa situação. No trabalho, foram analisadas a área foliar, a massa seca da parte aérea, o volume do sistema radicular e a massa seca do sistema radicular das cultivares de soja IAC Foscarin-31, IAC-23, IAC-17, IAC-24 e IAC-18, além de análise histológica do caule e da raiz principal da cultivar IAC-23, das plantas mantidas durante 28 dias alagadas. Todas as cultivares foram submetidas aos tratamentos: alagamento do vaso sem nitrato; alagamento com nitrato e alagamento com nitrato adicionado após sete dias de experimento. Os resultados...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Encharcamento; Glycine max; Nitrogênio; Crescimento vegetal.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000100002

Comparação de métodos de seleção de genitores e populações segregantes aplicados ao melhoramento de trigo
Provedor de dados: 53
Autores: Pimentel,Adérico Júnior Badaró; Ribeiro,Guilherme; Souza,Moacil Alves de; Moura,Lisandra Magna; Assis,Josiane Cristina de; Machado,Juarez Campolina.
Os métodos utilizados para seleção de cruzamentos em uma cultura não necessariamente são apropriados para outras. O presente trabalho teve como objetivo avaliar a aplicação da análise dialélica, da diversidade genética, da média parental e do método de Jinks e Pooni na seleção de genitores e populações segregantes superiores para o caráter rendimento de grãos em trigo. Para isso, foram conduzidos dois experimentos. Os tratamentos foram dispostos em látice (experimento I) e em blocos casualizados com informação de indivíduo dentro da parcela (experimento II). Avaliaram-se 12 genitores e as 36 populações segregantes na geração F3 resultantes do cruzamento desses genitores em esquema de dialelo parcial. A aplicação das metodologias avaliadas produziu...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Triticum aestivum; Predição do potencial genético; Capacidade de combinação; Rendimento de grãos.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000200001

Análise de zonas homogêneas em séries temporais de precipitação no Estado da Bahia
Provedor de dados: 53
Autores: Dourado,Camila da Silva; Oliveira,Stanley Robson de Medeiros; Avila,Ana Maria Heuminski de.
O objetivo deste trabalho foi identificar zonas pluviometricamente homogêneas no Estado da Bahia e analisar as condições climáticas de cada zona entre 1981 e 2010. Foi aplicada a técnica de mineração de dados, Clusterização (agrupamento de dados), por meio do uso do algoritmo k-means, para transformação das séries históricas de precipitação em cinco zonas pluviometricamente homogêneas, em resposta à orografia, maritimidade e sistemas meteorológicos atuantes na região. Foram utilizados dados de médias mensais de precipitação de 92 estações meteorológicas. Os resultados apontam que as zonas mais secas estão situadas na parte central, de norte a sul do estado, principalmente ao norte com os menores volumes anuais, em torno de 480 mm. A zona localizada ao...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mineração de dados; Clusterização; Variabilidade pluviométrica.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000200012

Bragantia, v.72, n.3, 2013
Provedor de dados: 53
Tipo: Info:eu-repo/semantics/article
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000400015

Estimativas de parâmetros genéticos e ganho de seleção para produção de frutos em progênies de polinização aberta de pupunheira no estado do Pará, Brasil
Provedor de dados: 53
Autores: Farias Neto,João Tomé de; Clement,Charles Roland; Resende,Marcos Deon Vilela de.
O estudo objetivou estimar parâmetros e valores genéticos para os caracteres número de cachos (NC), peso médio do cacho (PMC) e peso total do cacho (PTC) aos seis anos, pelo método de modelos mistos (REML/BLUP). O teste de progênies foi estabelecido sob o delineamento de blocos ao acaso com 50 tratamentos (progênies), 10 blocos e uma planta por parcela, no espaçamento de 5 x 5 m, além de uma bordadura externa ao experimento. As estimativas de herdabilidade individual e médias no sentido restrito para PTC (0,213 e 0,360) e NC (0,286 e 0,435), respectivamente, foram de boas magnitudes. O coeficiente de variação genética individual exibiu valores elevados para PTC (19,86) e NC (17,59). A raiz quadrada da herdabilidade ao nível de médias das progênies resulta...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bactris gasipaes; Melhoramento genético; Ganho genético; Teste de progênies; REML/BLUP.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000200002

Potencial climático para a produção de uvas em sistema de dupla poda anual no estado do Paraná
Provedor de dados: 53
Autores: Ricce,Wilian da Silva; Caramori,Paulo Henrique; Roberto,Sérgio Ruffo.
A cultura da videira tem potencial para produção contínua logo após pequeno período de descanso entre safras, porém os riscos climáticos podem limitar essa prática. O objetivo foi avaliar o potencial climático para o cultivo de duas safras anuais e a estimativa da severidade de míldio, em função de diferentes épocas de poda, e da exigência em graus-dia de diferentes genótipos de uvas (Vitis spp.), no estado do Paraná. Foram avaliados os riscos de geada, o balanço hídrico climatológico normal e a severidade potencial de ocorrência de míldio utilizando dados de 21 estações meteorológicas do Instituto Agronômico do Paraná. A ocorrência de geadas limita a época de cultivo da videira nas regiões centro, sul e leste. O excesso hídrico é observado em todo o...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Risco climático; Vitis; Graus-dia; Míldio.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000400013

Desenvolvimento inicial de Urochloa ruziziensis e desempenho agronômico da soja em diferentes arranjos espaciais no cerrado Mato-Grossense
Provedor de dados: 53
Autores: Silva,Willian Batista; Petter,Fabiano André; Lima,Larissa Borges de; Andrade,Fabricio Ribeiro.
A consolidação do sistema de plantio direto no cerrado ainda encontra dificuldades quanto ao estabelecimento das plantas de cobertura. Nesse sentido, tem se optado pela técnica da sobressemeadura visando o aproveitamento da umidade no fim do período chuvoso. Entretanto, nem sempre há sucesso no estabelecimento das culturas com esse sistema de semeadura. Dessa forma, objetivou-se com este trabalho avaliar o desenvolvimento inicial de Urochloa ruziziensis em sobressemeadura no estágio R5.3 e desempenho agronômico da soja sob diferentes espaçamentos nas entrelinhas de cultivo. O trabalho foi conduzido a campo em Barra do Garças (MT) Brasil, na safra 2010/2011. O delineamento experimental foi o de blocos ao acaso, em esquema fatorial 5x2 com quatro repetições,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max; Plantas de cobertura; Produtividade; Radiação fotossinteticamente ativa.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000200006

Seed germination performances of Styrax species help understand their distribution in Cerrado areas in Brazil
Provedor de dados: 53
Autores: Kissmann,Camila; Habermann,Gustavo.
In this descriptive paper, we described germination responses of Styrax pohlii, S. camporum and S. ferrugineus seeds at 5, 10, 15, 20, 25, 30, 35, 40 and 45 °C. We also assessed the percentage germination (%G) of S. pohlii seeds with different seed water contents because, as a forest species, it seems to have recalcitrant seed behavior. Intrigued by the capacity of seeds of this species to germinate directly from puddles formed on poorly drained soils of riparian forests, where it typically occurs, we also tested the effect of de-pulping fruits on germination of S. pohlii seeds under hypoxia and normoxia conditions. In addition, we checked whether distinct concentrations of gibberellic acid (GA3) could break S. ferrugineus seed dormancy, a typical seed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hypoxia; Styrax pohlii; S. camporum; S. ferrugineus; Temperature; Desiccation seed tolerance.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000300001

Crescimento, composição mineral e fenóis totais de espécies de Passiflora em função de fontes nitrogenadas
Provedor de dados: 53
Autores: Sousa,Liliane Barroso de; Heitor,Letícia Celia; Santos,Paulo Cesar dos; Freitas,Jalille Amim Altoé; Freitas,Marta Simone Mendonça de; Freitas,Silvio de Jesus; Carvalho,Almy Junior Cordeiro de.
O trabalho teve como objetivo avaliar a influência de fontes nitrogenadas sobre o crescimento inicial, os teores nutricionais e os fenóis totais contidos nas folhas do ramo primário de três espécies de Passiflora e ainda, os efeitos dessas fontes sobre a composição química do substrato de cultivo. O experimento foi conduzido em delineamento em blocos casualizados em sistema fatorial 4×3, sendo quatro fontes nitrogenadas (esterco bovino + nitrato de amônio; esterco bovino + sulfato de amônio; esterco bovino + ureia e esterco bovino) e três espécies de Passiflora (Passiflora edulis, Passiflora alata e Passiflora ligularis), com quatro repetições. A espécie P. edulis apresentou maior comprimento, diâmetro e número de brotações do ramo primário em relação às...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Passiflora alata; Passiflora edulis; Passiflora ligularis; Adubação.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000300007

Adubação verde e nitrogenada na cultura do trigo em plantio direto
Provedor de dados: 53
Autores: Viola,Ricardo; Benin,Giovani; Cassol,Luís César; Pinnow,Cilas; Flores,Mariana Faber; Bornhofen,Elesandro.
Pouco se sabe sobre os benefícios do cultivo de adubos verdes sobre o desempenho da cultura do trigo, cultivada em sucessão e, até que ponto, pode substituir ou reduzir a adubação nitrogenada mineral. Objetivou-se com o presente trabalho avaliar a produção e decomposição de matéria seca bem como o acúmulo e liberação de nutrientes de plantas de cobertura de solo (nabo forrageiro, ervilhaca comum, ervilha forrageira, tremoço e feijoeiro) e quantificar seus efeitos sobre o desempenho da cultura do trigo, cultivada em sucessão, sob diferentes doses de adubação nitrogenada (sem adição de nitrogênio, 40, 80 e 120 kg ha-1). O experimento foi desenvolvido no município de Pato Branco (PR), em duas safras agrícolas, em sistema de plantio direto. O nabo forrageiro e...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Triticum aestivum L.; Nabo forrageiro; Tremoço; Ervilha forrageira; Ciclagem de nutrientes.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000100012

Estádio de adaptação de Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae) em hospedeiros alternativos
Provedor de dados: 53
Autores: Boregas,Katia Gisele Brasil; Mendes,Simone Martins; Waquil,José Magid; Fernandes,Geraldo Wilson.
A principal praga-alvo na cultura do milho é a lagarta-do-cartucho, Spodoptera frugiperda (J.E. Smith, 1797) (Lepidoptera: Noctuidae), que, pela sua ampla distribuição temporal e geográfica constitui-se em uma das espécies mais nocivas nas regiões tropicais das Américas. O objetivo foi avaliar o estádio de adaptação de S. frugiperda em 17 espécies hospedeiras, cultivadas ou selvagens, mais comuns no agroecossistema brasileiro. As plantas foram cultivadas em cinco épocas, entre 2006 e 2008, utilizando o milho como padrão. Larvas de S. frugiperda recém-eclodidas foram individualizadas e confinadas em copo plástico (50 mL), onde foram alimentadas com seções de folha nova de cada hospedeiro. O alimento foi substituído a cada dois dias por folhas frescas....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ecologia; Interação inseto-planta; Manejo de pragas; Lagarta-do-cartucho.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000100009

Condutividade elétrica da solução nutritiva e acúmulo de macro e micronutrientes no cultivo de crisântemo
Provedor de dados: 53
Autores: Mota,Poliana Rocha D'Almeida; Fiorim,Aline Cristina Rossi; Bôas,Roberto Lyra Villas; Folegatti,Marcos Vinícius; Ludwig,Fernanda; Silva,Marcos Emanuel Araujo da.
A análise de crescimento com base no acúmulo de fitomassa e na marcha de absorção de nutrientes são importantes para determinar as épocas da maior demanda nutricional, de modo a programar a fertirrigação. Assim, esta pesquisa tem como objetivo determinar o crescimento e o acúmulo de nutrientes em plantas de crisântemo desenvolvidas em diferentes níveis de condutividade elétrica (CE) da solução nutritiva. Realizou-se experimento em casa de vegetação, utilizando o delineamento de blocos casualizados com cinco tratamentos e quatro repetições. Os tratamentos corresponderam aos níveis de CE da solução aplicada, com valores de 1,42; 1,65; 1,89; 2,13 e 2,36 dS m¹(fase vegetativa) e 1,71; 1,97; 2,28; 2,57 e 2,85 dS m¹(fase de botão). Após o enraizamento das...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dendranthema grandiflora; Fertirrigação; Análise nutricional; Marcha de absorção.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000100011

Detecção e monitoramento da resistência do tripes Frankliniella occidentalis ao inseticida espinosade
Provedor de dados: 53
Autores: Rais,Débora Soller; Sato,Mário Eidi; Silva,Marcos Zatti da.
O tripes Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae) é uma das pragas mais importantes em cultivos protegidos, principalmente de plantas ornamentais e hortícolas. Entre os problemas enfrentados pelos agricultores estão a dificuldade de seu controle com o uso de inseticidas devido à sua preferência pelas partes internas das flores e a evolução de resistência aos agroquímicos. O objetivo da pesquisa foi caracterizar a resistência de F. occidentalis a espinosade e avaliar a frequência de insetos resistentes ao inseticida, em áreas comerciais de crisântemo de diversos municípios do Estado de São Paulo. Seleções para resistência a espinosade foram realizadas em laboratório, utilizando-se uma população de F. occidentalis, coletada em 2007 de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Monitoramento de resistência; Crisântemo; Thripidae.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000100006

Mecanismos bioquímicos da defesa do algodoeiro à mancha de ramulária mediados pelo silício
Provedor de dados: 53
Autores: Curvêlo,Carmen Rosa da Silva; Rodrigues,Fabrício Ávila; Silva,Leandro de Castro; Nascimento,Kelly Juliane Telles; Berger,Paulo Geraldo.
Esse estudo investigou o efeito do silício (Si) na resistência do algodoeiro à mancha de ramulária (Ramularia areola). Plantas de algodoeiro (cvs. NuOpal e BRS Buriti) foram cultivadas em solução nutritiva nas concentrações de 0 (-Si) e 2 mM Si L-1 (+Si) e aos 30 dias após emergência foram submetidas à inoculação com uma suspensão de conídios de R. areola. Avaliou-se o período de incubação (PI), o período latente (PL60), a severidade, o número de lesões (NL) por cm² de folha, o tamanho de lesão (TL), a concentração foliar de Si e as atividades das enzimas de defesa peroxidases (POX), polifenoloxidases (PFO), quitinases (QUI), β-1,3-glucanases (GLU) e fenilalanina amônia-liases (FAL). Os dados de severidade foram usados para calcular a área abaixo da curva...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Enzimas de defesa; Mecanismos de defesa; Nutrição mineral.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000100007

Resistência de clones de seringueira à infestação por ácaros
Provedor de dados: 53
Autores: Vieira,Marineide Rosa; Martins,Gustavo Luís Mamoré; Scaloppi Junior,Erivaldo José.
Calacarus heveae Feres (Eriophyidae) e Tenuipalpus heveae Baker (Tenuipalpidae) podem causar intenso desfolhamento em plantas de seringueira. Na perspectiva de implantação de manejo integrado de pragas, o uso de clones resistentes pode vir a ser uma importante estratégia de controle. O objetivo deste trabalho foi avaliar a resistência de clones de seringueira ao ataque desses ácaros em experimento conduzido em Votuporanga, SP. O delineamento experimental foi o de blocos casualizados com 18 tratamentos e três repetições, sendo que os tratamentos adotados foram: clones PB 230, PB 243, PB 252, PB 294, PB 306, PB 311, PB 312, PB 314, PB 324, PB 346, PB 350, PB 355, IAC 56, IAC 302, IAC 328, IAC 334, Fx 3899 e RRIM 600. As avaliações populacionais de C. heveae...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hevea brasiliensis; Calacarus heveae; Tenuipalpus heveae; Acari.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000400007

Integração de dados quantitativos e multicategóricos na determinação da divergência genética entre acessos de cafeeiro
Provedor de dados: 53
Autores: Silva,Felipe Lopes da; Baffa,David Carlos Ferreira; Oliveira,Antonio Carlos Baião de; Pereira,Antonio Alves; Bonomo,Vitor Santos.
Foi realizada estratégia de integração dos dados quantitativos e multicategóricos para avaliação da divergência genética entre 88 acessos de Coffea arabica. Avaliaram-se 12 características quantitativas (nota total da qualidade sensorial da bebida; peso de três litros de "café da roça"; peso de três litros de "café da roça" com 11% de umidade; porcentagem de café beneficiado a partir de três litros de "café da roça" com 11% de umidade; peso de três litros de café beneficiado com 11% de umidade; total de frutos de "café da roça" em um litro; porcentagem de frutos secos, passas, cereja, verde-cana e verdes em um litro de "café da roça"; e porcentagem de frutos com lojas vazias em um litro de "café da roça") e seis características multicategóricas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coffea arabica L.; Análise multivariada; Banco de germoplasma.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000300004

Bragantia: um novo ciclo
Provedor de dados: 53
Autores: Blain,Gabriel Constantino; Ribeiro,Rafael Vasconcelos.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000100001

Aspectos bioquímicos da resistência do algodoeiro à ramulose potencializada pelo silício
Provedor de dados: 53
Autores: Guerra,Antonia Mirian Nogueira de Moura; Rodrigues,Fabrício Ávila; Berger,Paulo Geraldo; Barros,Angélica Fátima; Silva,Yasmim Cristina Rodrigues da; Lima,Tricia Costa.
Objetivou-se avaliar o efeito do silício (Si) sobre a ramulose e aspectos bioquímicos da resistência do algodoeiro a essa doença. Os cultivares BRS Araçá e FM 993 foram desenvolvidos em solução nutritiva contendo (+Si) ou não (-Si) silício. Avaliou-se o período de incubação (PI), incidência (I), área abaixo da curva do índice da ramulose (AACIR) e concentração foliar de Si (CFSi). A CFSi e o PI aumentaram em 76% e 19,5%, respectivamente, nas plantas +Si em relação às -Si, e a I e a AACIR diminuíram em 64% e 18%, respectivamente. A concentração dos compostos fenólicos solúveis totais (CFST) e dos derivados da lignina-ácido tioglicólico (DLATG) dos dois cultivares supridos com Si aumentou durante o progresso da ramulose, porém essa concentração foi inferior...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioquímica; Compostos de defesa; Enzimas; Colletotrichum gossypii var. cephalosporioides; Resistência.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000300012

Dependência micorrízica do amendoinzeiro sob doses de fósforo
Provedor de dados: 53
Autores: Hippler,Franz Walter Rieger; Moreira,Milene.
O amendoinzeiro responde positivamente quanto à produção de grãos quando associado a fungos micorrízicos arbusculares (FMA), porém é necessário verificar sua dependência para diferentes espécies em diferentes níveis de fósforo (P). Este trabalho teve por objetivo determinar a dependência micorrízica de Arachis hypogea L. cv. Runner IAC 886 sob diferentes concentrações de P, e avaliar o desenvolvimento do hospedeiro e do endófito após a colonização. O experimento foi conduzido em casa de vegetação, em delineamento inteiramente casualizado, com duas espécies de FMA (Gigaspora rosea e Glomus clarum) e um controle não inoculado, combinados com quatro doses de P aplicados no solo: 0, 75, 150 e 250 mg kg-1. Após 50 dias da germinação do amendoim, foram avaliados...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fungos micorrízicos arbusculares; Arachis hypogea; Adubação fosfatada.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000200011

Manejos de cobertura, mecanismos sulcadores e velocidades de operação sobre a semeadura direta da cultura do milho
Provedor de dados: 53
Autores: Trogello,Emerson; Modolo,Alcir José; Scarsi,Marina; Dallacort,Rivanildo.
A palhada de cobertura residual representa o grande diferencial do sistema de semeadura direta, propiciando melhorias nas condições biológicas, químicas e físicas do solo, em contrapartida esta matéria seca residual pode implicar em dificuldades no processo de semeadura, necessitando por vezes de um manejo deste resíduo. O presente trabalho teve por objetivo avaliar o desenvolvimento e produtividade da cultura do milho submetido a diferentes métodos de manejo de palhada, mecanismos sulcadores e velocidades de operação. Utilizou-se o delineamento em blocos ao acaso com parcelas subsubdivididas, composto por 16 tratamentos e quatro repetições, totalizando 64 unidades experimentais. Os tratamentos foram compostos pela combinação entre quatro manejos de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Semeadura direta; Zea mays; Avena strigosa; Qualidade de semeadura; Produtividade da cultura.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000100013

Influência do magnésio na resistência do arroz à mancha parda
Provedor de dados: 53
Autores: Moreira,Wiler Ribas; Resende,Renata Sousa; Rodrigues,Fabrício Ávila; Andrade,Camila Cristina Lage; Nascimento,Clístenes Williams Araujo.
A mancha parda, causada pelo fungo Bipolaris oryzae, é uma das principais doenças da cultura do arroz. Sabe-se que o magnésio (Mg) tem o potencial de reduzir a intensidade de algumas doenças em culturas de importância econômica e, portanto, o objetivo desse trabalho foi verificar o efeito de diferentes doses desse macronutriente na resistência do arroz à mancha parda. Para isto, plantas de arroz (cv. Metica-1) foram cultivadas em solução nutritiva contendo 0,25; 0,5; 1; 2 e 4 mmol.L-1 de Mg. Foram avaliados o período de incubação (PI), o número de lesões (NL) por cm² de folha, a severidade da mancha parda e a concentração foliar de Mg. Os dados de severidade foram usados para calcular a área abaixo da curva do progresso da mancha parda (AACPMP). Outro...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bipolaris oryzae; Enzimas de defesa; Nutrição mineral.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000200007

Effect of root and leaf applications of soluble silicon on blast development in rice
Provedor de dados: 53
Autores: Cacique,Isaias Severino; Domiciano,Gisele Pereira; Moreira,Wiler Ribas; Rodrigues,Fabrício Ávila; Cruz,Maria Fernanda Antunes; Serra,Núria Sierras; Català,Ana Botta.
Blast, caused by Pyricularia oryzae, is the most important fungal disease of rice worldwide. This study aimed to compare root and foliar supply of soluble silicon (Si) on rice resistance to blast. The application of soluble Si to the roots increased Si concentration in leaf tissues as compare to plants grown in soil amended with calcium silicate. There was no increase in leaf Si concentration after soluble Si spray, regardless if the leaves were washed or not before analysis. X-ray microanalysis revealed that Si deposition was very similar on the leaf epidermis of plants sprayed with soluble Si, root amended with soluble Si or grown in soil amended with calcium silicate. The lesion size, the number of lesions per cm² of leaf and the area under blast...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pyricularia oryzae; Foliar disease; Mineral nutrition.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000300013

Herança da resistência do mamoeiro a doenças fúngicas com base em análise dialélica de Hayman
Provedor de dados: 53
Autores: Vivas,Marcelo; Silveira,Silvaldo Felipe da; Amaral Junior,Antonio Teixeira do; Cardoso,Deisy Lúcia; Pereira,Messias Gonzaga.
Neste trabalho foram estimados parâmetros genéticos e estudou-se a herança da resistência do mamoeiro às doenças pinta-preta, oídio e mancha-de-phoma, em cruzamentos dialélicos no campo. Avaliaram-se 56 combinações (F1s e recíprocos) e oito genitores, quatro do grupo Formosa (Maradol, JS12-N, JS12-4 e Sekati) e quatro do grupo Solo (Waimanalo, Golden, Sunrise Solo 72-12 e São Mateus). Quantificaram-se a severidade de pinta-preta em folha e em fruto, e a severidade de oídio e mancha-de-phoma em folha. Efetuou-se análise de variância conjunta dos dados, considerando-se, além dos cruzamentos, a época de avaliação como fontes de variação. A severidade de pinta-preta em folha e em fruto e a severidade de oídio em folha tiveram ausência de significância nos três...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Asperisporium caricae; Streptopodium caricae; Carica papaya; Hibridação.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000400003

Resistência do algodoeiro à ferrugem tropical potencializada pelo silício
Provedor de dados: 53
Autores: Guerra,Antonia Mirian Nogueira de Moura; Rodrigues,Fabrício Ávila; Berger,Paulo Geraldo; Barros,Angélica Fátima; Rodrigues,Yasmim Cristina; Lima,Tricia Costa.
Este trabalho teve como objetivo estudar o efeito do silício (Si) sobre componentes de resistência do algodoeiro à ferrugem tropical causada por Phakopsora gossypii. Plantas das cultivares BRS Buriti e FM 993 cresceram em solução nutritiva contendo zero (-Si) ou 2 mmol Si L- 1 (+Si). A maior concentração foliar de Si aumentou o período de incubação e o período latente em 9% e 14,3%, respectivamente, reduziu a área pustular, a área abaixo da curva de progresso da ferrugem e a área abaixo da curva de progresso da área da pústula em 27,5%, 36% e 22%, respectivamente. Nas plantas das cultivares BRS Buriti e FM 993 supridas com Si houve redução no número de pústulas em 70% e 30% e no número de urédias em 40,3% e 19,5%, respectivamente. A concentração de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Compostos de defesa; Phakopsora gossypii; Resistência.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000300011

Adaptabilidade e estabilidade de clones de cana-de-açúcar
Provedor de dados: 53
Autores: Fernandes Júnior,Antonio Ribeiro; Andrade,João Antonio da Costa; Santos,Pedro César dos; Hoffmann,Hermann Paulo; Chapola,Roberto Giacomini; Carneiro,Monalisa Sampaio; Cursi,Danilo Eduardo.
O objetivo deste trabalho foi identificar clones de cana-de-açúcar produtivos, com boa estabilidade e adaptabilidade no estado de São Paulo e, também, identificar locais mais representativos para seleção e experimentação. Foram avaliados dez clones e duas testemunhas comerciais de maturação média-tardia em primeira soca de experimentos colhidos em agosto de 2009, utilizando o método de regressão bissegmentada e análise AMMI (Additive Main Effects and Multiplicative Interaction Analysis). Os resultados dos dois métodos foram comparados e evidenciaram que os clones RB975201, RB975157, RB975932, RB975242 e RB975162 foram os mais promissores devido à produtividade superior à das testemunhas, a alta estabilidade verificada em um ou nos dois métodos e a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Saccharum spp.; Interação genótipo x ambiente; Regressão bissegmentada; AMMI.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000300002

Qualidade de sementes de amendoim armazenadas no estado de São Paulo
Provedor de dados: 53
Autores: Santos,Franciele dos; Medina,Priscila Fratin; Lourenção,André Luiz; Parisi,João José Dias; Godoy,Ignácio José de.
Com os objetivos de avaliar a qualidade fisiológica e sanitária de sementes de amendoim armazenadas no estado de São Paulo, identificar os principais insetos e fungos que ocorrem nessas condições e as possíveis injúrias causadas que possam prejudicar a qualidade dessas sementes, amostragens de lotes das cultivares IAC 886 e IAC 503, produzidas nas safras 2010/11 e 2011/12, foram realizadas em quatro épocas: antes do armazenamento, antes do beneficiamento, após o beneficiamento e após o tratamento químico. As sementes foram analisadas quanto ao teor de água, germinação, vigor e sanidade. O beneficiamento não melhorou a qualidade das sementes de amendoim. As principais pragas associadas às sementes foram Cyrtomenus mirabilis (Perty) e Corcyra cephalonica...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arachis hypogaea L.; Germinação; Armazenamento; Insetos praga; Fungos; Beneficiamento.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000300014

Produtividade da cultura da batata-doce em diferentes sistemas de preparo do solo
Provedor de dados: 53
Autores: Rós,Amarílis Beraldo; Tavares Filho,João; Barbosa,Graziela Moraes de Cesare.
Trabalhos sobre preparo reduzido em solos cultivados com raízes e tubérculos são escassos e controversos. Este trabalho objetivou avaliar e comparar a produtividade de raízes tuberosas de plantas de batata-doce cultivadas em argissolo vermelho-amarelo sob preparo convencional (aração seguida de gradagem niveladora e posterior levantamento de leiras com sulcador) e sob preparo reduzido com manutenção de palhada superficial (sem revolvimento do solo, exceto nas linhas de plantio). O delineamento experimental foi em blocos ao acaso, em esquema de parcelas subdivididas. As parcelas principais corresponderam aos tratamentos preparo convencional (com confecção de leiras) e preparo reduzido, e as subparcelas, às quatro épocas de coleta: 90, 120, 150 e 180 dias...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ipomoea batatas; Conservação do solo; Preparo reduzido; Raiz tuberosa.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000200005

Divergência genética entre cafeeiros do germoplasma Maragogipe
Provedor de dados: 53
Autores: Guedes,Janine Magalhães; Vilela,Diego Júnior Martins; Rezende,Juliana Costa; Silva,Felipe Lopes; Botelho,César Elias; Carvalho,Samuel Pereira.
Este trabalho objetivou identificar a divergência genética entre acessos de cafeeiro do grupo Maragogipe, situados no Banco Ativo de Germoplasma de Café do Estado de Minas Gerais, no município de Patrocínio (MG), por meio de análises multivariadas. Foram avaliados 27 descritores morfo-agronômicos, e a distância generalizada de Mahalanobis foi usada para quantificar a divergência genética entre os acessos. Como estratégias de agrupamento, foram empregados o agrupamento de Tocher, o método hierárquico Unweighted Pair-Group Method Using Arithmetic Averages (UPGMA) e a análise de variáveis canônicas. A análise de agrupamento pelos métodos de Tocher e UPGMA separaram os acessos em três e seis grupos, respectivamente. A análise da contribuição relativa de cada...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coffea arabica; Análise multivariada; Melhoramento genético.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000200003

Eficiência da seleção de progênies de café F4 pela metodologia de modelos mistos (REML/BLUP)
Provedor de dados: 53
Autores: Pereira,Thamiris Bandoni; Carvalho,João Paulo Felicori; Botelho,César Elias; Resende,Marcos Deon Vilela de; Rezende,Juliana Costa de; Mendes,Antônio Nazareno Guimarães.
Objetivou-se verificar a eficiência da seleção de cafeeiros em geração F4 para características agronômicas e resistência a doenças mediante o emprego da metodologia de modelos mistos de Henderson. O experimento foi instalado na Fazenda Experimental da EPAMIG, em Machado, MG, sendo utilizadas progênies F4 derivadas do cruzamento entre cultivares do grupo Icatu com Catuaí Amarelo IAC 62 e IAC 17 e com as progênies IAC 5002 e IAC 5010. O delineamento experimental utilizado foi o látice com quatro repetições e as avaliações foram realizadas ao longo de dois anos (2010 e 2011). Foram avaliadas as seguintes características: produção (litros planta-1), reação à ferrugem, vigor vegetativo e reação à cercosporiose. Foram utilizados o procedimento REML/BLUP para...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coffea arabica; Seleção precoce; Icatu; Melhoramento genético.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000300005

Tuberização e produtividade de batata-doce em função de datas de plantio em clima subtropical
Provedor de dados: 53
Autores: Erpen,Lígia; Streck,Nereu Augusto; Uhlmann,Lilian Osmari; Freitas,Charles Patrick de Oliveira de; Andriolo,Jerônimo Luiz.
O objetivo deste trabalho foi avaliar o efeito de datas de plantio no início de tuberização (IT) e na produtividade de raízes tuberosas de batata-doce em clima subtropical. Um experimento de campo foi conduzido em Santa Maria, RS, Brasil, com quatro datas de plantio (25/8/2011; 21/11/2011; 3/1/2012 e 13/2/2012), para obter plantas crescendo em diferentes condições ambientais, principalmente de temperatura e fotoperíodo. A variedade usada foi a Princesa, na densidade de plantio de 25 mil plantas ha-1. O delineamento experimental utilizado foi o de blocos ao acaso com quatro repetições. Duas semanas após o plantio foram coletadas quatro plantas a cada dois dias para a determinação do IT. A colheita foi realizada em 15/5/2012. A duração das fases plantio a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ipomoea batatas; Raiz tuberose; Fotoperíodo; Temperatura.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000400011

Desempenho de genótipos de aveia branca em resposta ao estresse por alumínio
Provedor de dados: 53
Autores: Silveira,Solange Ferreira da Silveira; Hawerroth,Maraisa Crestani; Luche,Henrique de Souza; Oliveira,Danyela de Cassia; Sousa,Rogério Oliveira de; Maia,Luciano Carlos da; Oliveira,Antonio Costa de.
A aveia branca (Avena sativa L.) é uma cultura que tem um papel importante no sistema de produção de grãos e integração lavoura-pecuária, no entanto, em algumas regiões brasileiras, o pleno estabelecimento e desenvolvimento dessa cultura, bem como o aumento de produtividade são inviabilizados pelo excesso de alumínio (Al) nos solos. A avaliação de caracteres de plântulas de aveia desenvolvidas sob cultivo hidropônico com adoção de solução nutritiva mínima pode ser eficiente para classificar genótipos sensíveis e tolerantes ao Al. Este trabalho objetivou avaliar o desempenho de 10 genótipos de aveia submetidos ao estresse por Al, baseando-se na análise da retomada do crescimento da raiz, com uso de solução mínima e identificando quais caracteres se mantêm...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avena sativa L.; Retomada do crescimento da raiz; Solução mínima.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000400001

Resistência a Myzus persicae em genótipos de tomateiro com altos teores foliares de aleloquímicos
Provedor de dados: 53
Autores: Silva,Alex Antônio da; Maluf,Wilson Roberto; Moraes,Jair Campos; Alvarenga,Roberta; Costa,Eva Maria Rodrigues.
O objetivo deste trabalho foi avaliar a resistência ao pulgão Myzus persicae em genótipos de tomateiro com altos teores foliares de aleloquímicos. Para tanto, foi realizado um teste de antibiose e dois testes de não preferência, um com pulgões alados e o outro com pulgões ápteros. Os genótipos utilizados foram as linhagens TOM-687 e TOM-688, ricas em acilaçúcares; ZGB-703 e ZGB-704, ricas em zingibereno; BPX-365G-899-07-04-02 e BPX-367E-238-02, ricas em 2-tridecanona; e dois híbridos comerciais usados como testemunhas, Débora Max e Bravo F1 que apresentam baixos teores dessas substâncias. Observou-se aumento do período ninfal dos insetos mantidos sobre os genótipos com altos teores de acilaçúcares, e diminuição do período reprodutivo, da longevidade e da...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Solanum lycopersicum; Insecta; Melhoramento genético; Alomônios.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000200009

Depressão endogâmica e heterose de híbridos de populações F2 de milho no estado de São Paulo
Provedor de dados: 53
Autores: Bernini,Cristiani Santos; Paterniani,Maria Elisa Ayres Guidetti Zagatto; Duarte,Aildson Pereira; Gallo,Paulo Boller; Guimarães,Paula de Souza; Rovaris,Sara Regina Silvestrin.
A heterose e a depressão por endogamia são fenômenos complementares importantes nas estratégias de melhoramento, como para a obtenção de híbridos convencionais e melhoramento de populações. Este trabalho teve por objetivos avaliar híbridos de populações F2 de milho quanto aos caracteres agronômicos, estimar a heterose em relação à média dos pais e determinar a depressão endogâmica na obtenção das populações de genitores F2. Foram avaliados 10 híbridos de populações F2, cinco populações de genitores F2 e os respectivos híbridos comerciais (HC) quanto aos seguintes caracteres agronômicos: florescimento masculino (FM), altura de planta (AP), altura de espiga (AE) e massa de grãos (MG), em dois locais do estado de São Paulo, Mococa e Palmital, sob delineamento...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Vigor híbrido; Endogamia; Melhoramento populacional; Produtividade.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000300003

Clones de copa de seringueira resistentes ao mal-das-folhas para o cultivo na Amazônia tropical úmida
Provedor de dados: 53
Autores: Moraes,Larissa Alexandra Cardoso; Moraes,Vicente Haroldo de Figueiredo; Moreira,Adônis; Cordeiro,Everton Rabelo; Oliveira,Maria Cristina Neves de.
O objetivo deste trabalho foi avaliar o desempenho de 11 clones de copa de seringueira de Hevea pauciflora × H. guianensis, H. guianensis × H. pauciflora, H. pauciflora × H. rigidifolia e H. pauciflora resistentes ao fungo Microcyclus ulei, causador do mal-das-folhas, sobre o painel de CNS AM 7905 (seleção primária de H. brasiliensis), durante 14 anos nas condições edafoclimáticas da Amazônia tropical úmida. Foram avaliados: produtividade de borracha seca durante sete anos, aspectos anatômicos, características fisiológicas do látex, estado nutricional das plantas e métodos de sangria (oriental e amazônica). Os clones de copa CPAA C 01, 06 e 45 produziram, na média, mais de 1,4 t ha- 1 ano- 1 de borracha seca, seguido pelos clones CPAA C 13, 14, 15, 16 e...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hevea spp.; Microcyclus ulei; Produção; Estado nutricional; Aspectos anatômicos; Características fisiológicas do látex.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000300010

The modified Mann-Kendall test: on the performance of three variance correction approaches
Provedor de dados: 53
Autores: Blain,Gabriel Constantino.
The Mann-Kendall test has been used to detect climate trends in several parts of the Globe. Three variance correction approaches (MKD, MKDD and MKRD) have been proposed to remove the influence of serial correlation on this trend test. Thus, the main goal of this study was to evaluate the probability of occurrence of types I and II errors associated with these three approaches. The results obtained by means of Monte Carlo simulations and from a case of study allowed us to drawn the following conclusions: All approaches are capable of meeting the adopted significant level when they are applied to trend-free uncorrelated series. The approaches are as powerful as the original MK test when they are applied to uncorrelated series. Regarding serially correlated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Monte Carlo simulations; Serial correlation; Climate change.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000400014

Trocas gasosas e estresse oxidativo em plantas de algodoeiro supridas com silício e infectadas por Ramularia areola
Provedor de dados: 53
Autores: Curvêlo,Carmen Rosa da Silva; Rodrigues,Fabrício Ávila; Pereira,Lucas Felisberto; Silva,Leandro Castro; DaMatta,Fábio Murilo; Berger,Paulo Geraldo.
Considerando o efeito positivo do silício (Si) na melhoria do desempenho fisiológico de várias espécies de plantas quando infectadas por patógenos, este trabalho teve como meta investigar o efeito desse elemento na capacidade fotossintética e no metabolismo antioxidativo de plantas dos cultivares de algodoeiro NuOpal e BRS Buriti, supridas ou não com Si, durante o processo infeccioso de Ramularia areola. A infecção por R. areola afetou negativamente a taxa líquida de fixação do CO2 (A), a condutância estomática (g s), a transpiração e a razão entre concentração interna e ambiente de CO2 nas plantas dos cultivares NuOpal e BRS Buriti não supridas com Si em relação às plantas supridas com esse elemento. Na presença do Si, houve aumento em A e g s além das...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fotossíntese; Mancha foliar; Nutrição mineral.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000400005

Inducers of resistance and silicon on the activity of defense enzymes in the soybean-Phakopsora pachyrhizi interaction
Provedor de dados: 53
Autores: Cruz,Maria Fernanda Antunes da; Rodrigues,Fabrício Ávila; Polanco,Leonora Rodriguez; Curvêlo,Carmen Rosa da Silva; Nascimento,Kelly Juliane Telles; Moreira,Maurílio Alves; Barros,Everaldo Gonçalves.
This study aimed to determine the effect of jasmonic acid (JA), Acibenzolar-S-Methyl (ASM) and calcium silicate (a source of soluble silicon, Si), on the potentiation of soybean resistance to Asian soybean rust (ASR). The ASR severity was significantly reduced on plants sprayed with ASM or supplied with Si in comparison to plants sprayed with JA or deionized water. For chitinases (CHI), significant differences in activity between non-inoculated and inoculated plants sprayed with deionized water or with ASM occurred at 72 hours after inoculation (hai), at 24 and 72 hai when sprayed with JA and at 141 hai when supplied with Si. For β-1,3-glucanases (GLU), significant differences in activity between non-inoculated and inoculated plants sprayed with deionized...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max; Asian soybean rust; Induction of resistance; Mechanisms of host defense.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000200008

Produção de fitomassa e acúmulo de nutrientes por plantas de cobertura no cerrado piauiense
Provedor de dados: 53
Autores: Pacheco,Leandro Pereira; Monteiro,Marinete Martins de Sousa; Silva,Rodrigo Fonseca da; Soares,Leandro dos Santos; Fonseca,Wéverson Lima; Nóbrega,Julio César Azevedo; Petter,Fabiano André; Alcântara Neto,Francisco de; Osajima,Josy Anteveli.
O objetivo deste trabalho foi avaliar o potencial de plantas de cobertura semeadas em diferentes sistemas de cultivo quanto à produção de fitomassa e acúmulo de nutrientes, no cerrado piauiense. O experimento foi instalado no ano agrícola 2010/2011, na Serra do Quilombo, município de Bom Jesus (Piauí). O arranjo utilizado foi em parcelas subdivididas, com os seguintes sistemas de manejo do solo: preparo convencional e plantio direto avaliados nas parcelas e, nas subparcelas, os sistemas de produção: S1 - Soja no verão em monocultura; S2 - Soja no verão e Penissetum glaucum na safrinha; S3 - P. glaucum pré-soja de verão e sobressemeadura de Urochloa ruziziensis na soja no estádio R5.5; S4 - Soja de verão e sobressemeadura de P. glaucum na soja no estádio...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Braquiária; Milheto; Decomposição; Crotalária; Plantio direto.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000300006

Qualidade industrial do trigo em resposta à adubação verde e doses de nitrogênio
Provedor de dados: 53
Autores: Pinnow,Cilas; Benin,Giovani; Viola,Ricardo; Silva,Cristiano Lemes da; Gutkoski,Luiz Carlos; Cassol,Luís César.
O objetivo deste estudo foi avaliar os efeitos de adubos verdes cultivados entre a cultura do milho e a do trigo e da adubação nitrogenada sobre a qualidade industrial do trigo. Os tratamentos consistiram de quatro níveis de adubação nitrogenada: sem adição de nitrogênio, 40, 80 e 120 kg ha-1 e seis manejos outonais: quatro com o cultivo de espécies de cobertura (ervilha forrageira, ervilhaca comum, nabo forrageiro e tremoço), um cultivo de feijoeiro com fins comerciais e outro com a permanência em pousio no período compreendido entre a colheita do milho e a semeadura do trigo. O delineamento experimental foi o de blocos ao acaso em esquema fatorial, com três repetições. O rendimento de proteína aumentou linearmente com a aplicação de nitrogênio mineral....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Triticum aestivum L.; Qualidade de panificação; Adubação nitrogenada; Rendimento de grãos.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000100004

Nitrato modula os teores de cloreto e compostos nitrogenados em plantas de milho submetidas à salinidade
Provedor de dados: 53
Autores: Feijão,Alexcyane Rodrigues; Marques,Elton Camelo; Silva,Júlio César Barbosa da; Lacerda,Claudivan Feitosa de; Prisco,José Tarquinio; Gomes-Filho,Enéas.
O objetivo deste trabalho foi estudar o efeito do nitrato (NO3-) no crescimento e no acúmulo de solutos inorgânicos e orgânicos em plantas de milho submetidas à salinidade. O delineamento experimental foi o inteiramente casualizado, com cinco repetições, sob esquema fatorial 2×4, constando de oito tratamentos: dois níveis de salinidade (NaCl a 0 e 75 mM) e quatro concentrações de NO3- (0,5; 2,5; 5,0 e 7,5 mM) em sistema hidropônico. A massa seca da parte aérea e das raízes foi reduzida pela salinidade, porém isso foi menos evidente quando as plantas foram submetidas a concentrações de NO3- abaixo de 2,5 mM. O melhor crescimento das plantas foi observado na concentração aproximada de NO3- a 5,0 mM. Os teores de Na+ e Cl- aumentaram com a salinidade em todos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Estresse salino; Nitrogênio; Solutos inorgânicos e orgânicos; Zea mays.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000100003

Crescimento e produtividade de cana-de-açúcar em função da disponibilidade hídrica dos Tabuleiros Costeiros de Alagoas
Provedor de dados: 53
Autores: Abreu,Magno Luiz de; Silva,Marcelo de Almeida; Teodoro,Iêdo; Holanda,Lucas Almeida de; Sampaio Neto,Givaldo Dantas.
O objetivo deste trabalho foi avaliar as interações entre variáveis meteorológicas e os componentes de produção e produtividade de seis variedades de cana-de-açúcar nos Tabuleiros Costeiros de Alagoas visando o manejo varietal adequado. O plantio da cana-de-açúcar foi realizado em setembro de 2005 na região de Rio Largo (AL) e as três colheitas foram feitas em novembro de 2006, novembro de 2007 e novembro de 2008. O delineamento estatístico utilizado foi o de blocos casualizados com o tratamento constituído pelas variedades RB863129, RB867515, RB92579, RB93509, RB931003 e RB951541, com quatro repetições. As variáveis de crescimento avaliadas foram número, comprimento e produtividade dos colmos, índice de área foliar e produtividade de açúcar. O balanço...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Saccharum spp.; Balanço hídrico; Componentes da produção; Ciclo de cultivo; Variedades; Produção.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000300009

Interação genótipo x ambiente em genótipos de cafeeiro Mundo Novo por modelos não lineares e multiplicativos
Provedor de dados: 53
Autores: Andrade,Vinicius Teixeira; Rezende,Juliana Costa de; Botelho,César Elias; Carvalho,Gladyston Rodrigues; Gonçalves,Flavia Maria Avelar; Carvalho,Alex Mendonça de.
Este trabalho teve por objetivo avaliar a adaptabilidade e estabilidade fenotípica da produtividade de genótipos do grupo Mundo Novo pelos métodos TOLER e AMMI de maneira a compará-los e a selecionar aqueles que apresentassem alta adaptabilidade produtiva nas regiões produtoras de café do estado de Minas Gerais. Foram instalados e conduzidos experimentos em Três Pontas, Campos Altos e Capelinha, em delineamento de blocos casualizados, com quatro repetições e seis plantas por parcela. Os tratamentos foram constituídos por 33 genótipos do grupo Mundo Novo obtidos no Programa de Melhoramento Genético do Cafeeiro conduzido pelo Instituto Agronômico de Campinas (IAC). As avaliações de produção foram efetuadas ao longo de seis colheitas, as quais foram agrupadas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coffea arabica L.; Melhoramento genético; Adaptabilidade; Estabilidade fenotípica.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000400004

Produção e qualidade dos frutos de cultivares e seleções de pessegueiro na Serra da Mantiqueira
Provedor de dados: 53
Autores: Souza,Filipe Bittencourt Machado de; Alvarenga,Ângelo Albérico; Pio,Rafael; Gonçalves,Emerson Dias; Patto,Leonardo Silva.
Objetivou-se avaliar a produção e atributos de qualidade de cultivares e seleções de pessegueiro nas condições da Serra da Mantiqueira. Um ensaio de competição foi implantado no município de Maria da Fé (MG), com 17 cultivares e seleções ('BRS Libra', 'Bolinha', 'Fla 88-13', 'Ouromel-2', 'Aurora-1', 'Jade', 'Aztec Gold', 'Tropical Beauty', 'Sensação', 'Chimarrita', 'Diamante', 'Maciel', Conserva 1122, Cascata 1015, Conserva 1050, Conserva 693 e Cascata 1056). O experimento foi implantado em 2006, no espaçamento de 6,0x4,0 m, com mudas enxertadas no porta-enxerto 'Okinawa'. As avaliações foram realizadas em três ciclos produtivos (2009, 2010 e 2011), analisando-se os aspectos fenológicos, produtivos e atributos de qualidade do fruto. Para 'Bolinha', Cascata...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Prunus persica; Aspectos fenológicos; Adaptação; Pós-colheita; Firmeza; Coloração.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000200004

Períodos de interferência de plantas daninhas na cultura do girassol
Provedor de dados: 53
Autores: Silva,Remon Ribeiro da; Reis,Marcelo Rodrigues dos; Mendes,Kassio Ferreira; Aquino,Leonardo Ângelo de; Pacheco,Dilermando Dourado; Ronchi,Cláudio Pagotto.
Objetivou-se neste trabalho determinar os períodos de interferência de plantas daninhas na cultura do girassol. Foram realizados dois experimentos com o girassol híbrido Helio 250, sendo um conduzido no verão e o outro, no inverno. Para ambos, o delineamento experimental utilizado foi em blocos casualizados, com quatro repetições, e cada unidade experimental foi constituída de cinco linhas de plantas com 6,0 m de comprimento, espaçadas por 0,7 m. No experimento de verão foram avaliados oito períodos de convivência e controle de plantas daninhas: 10, 20, 30, 40, 50, 60, 70 e 88 dias após a emergência (dae). No experimento de inverno, os períodos foram: 7, 14, 21, 28, 38, 48, 58 e 82 dae. Avaliaram-se a massa da matéria seca e a área foliar das plantas de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Helianthus annuus L.; Competição; Produtividade.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000300008

Efeito da época de poda e da desfolha na interceptação de radiação solar na videira Bordô
Provedor de dados: 53
Autores: Radünz,André Luiz; Schöffel,Edgar Ricardo; Hallal,Márcia Oliveira Curi; Brixner,Gabriel Franke.
O presente trabalho teve por objetivo determinar a influência da desfolha e da época da poda seca sobre o albedo e sobre a radiação solar disponível ao nível dos cachos e determinar o efeito da radiação solar sobre o acúmulo de sólidos solúveis da videira. Foram realizadas duas épocas de poda seca e a desfolha em parte do vinhedo da cultivar Bordô conduzida no sistema pérgula. A radiação solar foi medida utilizando-se tubos solarímetros instalados em cada tratamento, sendo o teor de sólidos solúveis determinado no momento da colheita, com um refratômetro de campo. A realização da poda seca exerceu influência sobre o albedo, sendo que o maior albedo da videira Bordô é observado quando a poda seca ocorreu na época normal (meados de setembro) e sem desfolha....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sólidos solúveis totais; Desfolha; Sistema de condução latada; Balanço de ondas curtas.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000400012

Múltiplos apressórios e tubos de anastomoses conidiais no processo infeccioso de Colletotrichum gloeosporioides em macieira
Provedor de dados: 53
Autores: Araujo,Leonardo; Stadnik,Marciel J.
A Mancha Foliar de Glomerella (MFG), causada por Colletotrichum gloeosporioides, é uma doença emergente e destrutiva, da qual pouco se conhece sobre as relações patógeno/hospedeiro. O objetivo deste trabalho foi quantificar o número de apressórios por conídio e verificar a presença de Tubos de Anastomoses Conidiais (TAC) formados sobre folhas de macieira resistente e suscetível para MFG, inoculadas com dois isolados de C. gloeosporioides (MANE55 e MANE147). Os eventos iniciais de penetração de C. gloeosporioides foram semelhantes em ambos os genótipos, porém, o isolado MANE55 apresentou maior número de conídios germinados com múltiplos apressórios. Foi observado TAC sobre lesões da MFG para ambos os isolados em todos os intervalos de tempo.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mancha foliar de Glomerela; Malus domestica; Resistência.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000200010

Eficiência de métodos de melhoramento para teor de fibra e produtividade de grãos em progênies de feijoeiro comum
Provedor de dados: 53
Autores: Silva,Adélia Cristina Fernandes; Melo,Patrícia Guimarães Santos; Melo,Leonardo Cunha; Bassinello,Priscila Zaczuk; Pereira,Helton Santos.
O objetivo deste estudo foi comparar métodos de melhoramento quanto à variabilidade genética e à eficiência na obtenção de progênies superiores para teor de fibra bruta e produtividade de grãos em feijoeiro comum. As progênies foram obtidas do cruzamento, em 2003, entre as linhagens carioca CNFC 7812 e CNFC 7829. A população segregante foi conduzida por bulk, bulk dentro de F2 e SSD até geração F7. Em 2008 foram amostradas aleatoriamente 64 progênies de cada método para avaliação em Goiás e Paraná. Foram obtidas as estimativas dos componentes de variância, parâmetros genéticos e fenotípicos, média e índices de geração de progênies superiores. As progênies obtidas pelos métodos de bulk e SSD apresentaram diferenças significativas para produtividade e teor...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phaseolus vulgaris; Interação genótipo × ambiente; SSD; Bulk; Bulk dentro de famílias.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000400002

Bragantia, v.71, n.4, 2012
Provedor de dados: 53
Tipo: Info:eu-repo/semantics/article
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000100014

Efeito do silício nas concentrações de lignina e de açúcares em bainhas de folhas de arroz infectadas por Rhizoctonia solani
Provedor de dados: 53
Autores: Schurt,Daniel Augusto; Rodrigues,Fabrício Ávila; Colodette,Jorge Luiz; Carré-Missio,Vivian.
A queima das bainhas, causada pelo fungo Rhizoctonia solani Kühn, é uma das mais importantes doenças que afetam a produção de arroz no mundo. Este trabalho teve como objetivo verificar o efeito do silício (Si) nas concentrações de lignina solúvel e insolúvel e de açúcares totais em bainhas de folhas de arroz infectadas por R. solani. Plantas de arroz dos cultivares BR-Irga-409 e Labelle foram cultivadas em solução nutritiva sem (0 mM) ou com (2 mM) Si. A concentração de Si nas bainhas das folhas das plantas dos cultivares BR-Irga-409 e Labelle supridas com Si aumentou em 77% e 84%, respectivamente, em relação às plantas não supridas com Si. O comprimento relativo da lesão de queima das bainhas foi significativamente menor nas bainhas das plantas supridas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Escleródios; Nutrição mineral; Oryza sativa L.; Patógeno de solo; Queima das bainhas.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000400006

Reação de cultivares de cana-de-açúcar à broca do colmo
Provedor de dados: 53
Autores: Dinardo-Miranda,Leila Luci; Fracasso,Juliano Vilela; Costa,Viviane Pereira da; Anjos,Ivan Antonio dos; Lopes,Diego Olympio Peixoto.
RESUMO O objetivo do presente trabalho foi avaliar a reação de dez cultivares de cana-de-açúcar à Diatraea saccharalis Fabr., em experimento desenvolvido em delineamento em blocos casualizados com seis repetições e tratamentos em esquema fatorial 2x10. O primeiro fator foi constituído por dois níveis de infestação de broca (infestado e não infestado), e o segundo fator, pelas dez cultivares de cana-de-açúcar em estudo (IAC87-3396, IAC91-1099, IACSP93-3046, IACSP94-2101, IACSP94-2094, IACSP94-4004, IACSP95-5000, IACSP96-3060, IACSP96-2042 e SP91-1115). O ensaio foi avaliado em dois ciclos da cultura, cana-planta e primeira soca. Todas as cultivares foram muito atacadas pela broca, sendo IACSP94-4004, IACSP96-2042 e SP91-1115 as mais infestadas e danificadas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Saccharum sp.; Diatraea saccharalis; Resistência de plantas a insetos; Produtividade; Análise tecnológica.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052013000100005

Viability of bull spermatozoa collected from the epididymis stored at 18-20°C
Provedor de dados: 52
Autores: Bertol,Melina Andrea Formighieri; Weiss,Romildo Romualdo; Thomaz-Soccol,Vanete; Kozicki,Luiz Ernandes; Fujita,Aline Silva; Abreu,Renata Azevedo de; Green,Kerriel Thandile.
The aim of this study was to evaluate the viability of bull spermatozoa collected from the cauda epididymis stored at 18-20°C, which were compared with semen collected by electro-ejaculation method and preserved at 5°C. Ten pairs of testes from Tabapuã bulls were removed by orchiectomy and stored for 6 (G6), 12 (G12), 18 (G18), 24 (G24) and 30 (G30) h at room temperature (18-20°C). Seven days before orchiectomy, semen was collected by electro-ejaculation method. The sperm parameters evaluated were: sperm motility, vigor, concentration, morphology and acrosome defects. Sperm motility declined (p&lt;0.05) when spermatozoa were stored for 30 h in the epididymis. The spermatozoa from the epididymis showed lower sperm motility than that of spermatozoa collected...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bull; Epididymis; Orchiectomy; Sperm; Room temperature; Viability.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000500008

Influence of the gender on cerebral vascular diameters observed during the magnetic resonance angiographic examination of willis circle
Provedor de dados: 52
Autores: Stefani,Marco Antonio; Schneider,Felipe Luis; Marrone,Antonio Carlos Huf; Severino,Antonio Generoso.
The present study evaluated the calibers and anatomic configurations based on the Magnetic Resonance analysis (MRA), assaying the cerebral vascular territories and sex-linked variations. A randomized sample of 30 angiographic examinations in adult patients of both sexes was obtained and components of the circle of Willis were identified. Branch diameters were measured on a transversal cut 5mm from the vessel origin in a typical angiographic frontal incidence. For the comparative statistical analysis, tests were divided in the groups considering the patients' sex and age. The classical Circle of Willis configuration was oberved in only 15 samples (50%). Greater calibers were observed in the arteries of the posterior circulation and multiple linear...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Angiography; Magnetic resonance; Anatomic variations.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000100006

Non-linear dynamics of chromosome condensation induced by colcemid
Provedor de dados: 52
Autores: Fernandes,Thiago de Salazar e; Silva,Isvânia Maria Serafim da; Moraes,Renato Barros; Aguiar,Leandro Álvaro de Alcântara; Amaral,Ademir; Barbosa,Catão Temístocles; Nogueira,Romildo de Albuquerque.
This study investigated the dynamical process of chromosome condensation after colcemid treatment. Two pairs of human chromosomes, #2 and #3, were highlighted for the accurate identification by fluorescence in situ hybridization (FISH). A computerized image analysis system was used to measure the lengths of the two pairs of chromosomes averaged over 50 metaphases of different cultures with colcemid (0.5 µg/mL) added either at 3 or 48 h of a total 72 h culture period. For determining whether the process of chromosome condensation was chaotic or random, the algorithm of Detrended Fluctuation Analysis (DFA) was used. In order to evaluate the power of the method, the data were shuffled and DFA was performed again. It was found that colcemid prolonged treatment...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Non-linear dynamics; Chaos; Chromosome condensation; Colcemid.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000100011

Alcoholic fermentation by the wild yeasts under thermal, osmotic and ethanol stress
Provedor de dados: 52
Autores: Silva,Rosimeire Oenning da; Batistote,Margareth; Cereda,Marney Pascoli.
This study aimed to explore the variability in the metabolism of nine wild yeasts isolated from the sugarcane juice from a distillery in the Brazilian State of Mato Grosso. Cell viability under the stress conditions was evaluated. The yeasts were inoculated in the test tubes containing sugarcane juice adjusted from 12 to 21º Brix, ethanol from 6 to 12% in volume and temperature at 30, 35 and 40ºC. The viability was established by the growth in Petri dishes and visually by the CO2 production in the test tubes. None of the evaluated yeasts showed simultaneous resistance to the three stress conditions. The potential of yeast BB.09 could be emphasized due to its ability to ferment up to12% ethanol at 30°C.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bio prospection; Alcohol distillery; Cellular viability; Fermentation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000200001

Use of image analysis for monitoring the dilution of Physalis peruviana pulp
Provedor de dados: 52
Autores: Licodiedoff,Silvana; Ribani,Rosemary Hoffmann; Camlofski,Ana Mery de Oliveira; Lenzi,Marcelo Kaminski.
The aim of this work was to develop linear models using the image analysis coupled with density measurements to monitor the dilution of the Physalis juice in the concentrations ranging from 0 to 100% in mass of juice pulp. A sample corresponding to 20% in the mass of juice pulp was for validating purposes and a prediction of 19.9±0.3%. The models with three parameters showed the best predictions, providing this technique with a promising future for the monitoring the dilution of fruit juices.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Juice; Fruit; Color; Image; RGB; Physalis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000300015

Photosynthetic capacity and water use efficiency in sugarcane genotypes subject to water deficit during early growth phase
Provedor de dados: 52
Autores: Silva,Marcelo de Almeida; Jifon,John Lonfover; Santos,Claudiana Moura dos; Jadoski,Cleber Junior; Silva,Jorge Alberto Gonçalves da.
The objective of this study was to compare the gas exchange, photosynthetic capacity and water potential of sugarcane genotypes cultivated under water deficit conditions imposed during the initial growth phase. Experiments were performed in a greenhouse using two sugarcane genotypes namely: HoCP93-776 (drought susceptible) and TCP02-4587 (drought tolerant). Sixty days after planting, two different water treatments were applied (i.e., with or without water deficit). At 0,30 and 60 days after the treatment, gas exchange variables were evaluated for their relationship with water use, intrinsic instantaneous water use efficiency and instantaneous carboxylation efficiency. The SPAD index, photosynthetic pigments, water potential and relative water content in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Saccharum spp.; Photosynthesis; Stomatal conductance; Chlorophyll; Drought tolerance; Water potential.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000500004

Cross-species amplification of microsatellite loci developed for Passiflora edulis Sims. in related Passiflora Species
Provedor de dados: 52
Autores: Oliveira,Gilmara Alvarenga Fachardo; Pádua,Juliano Gomes; Costa,Juliana Leles; Jesus,Onildo Nunes de; Carvalho,Fabiana Moraes de; Oliveira,Eder Jorge de.
The aim of this study was to evaluate the selected 41 SSR markers developed for yellow passion fruit (Passiflora edulis f. flavicarpa Sims.) for their transferability to 11 different Passiflora species. Twenty-one SSR were successfully amplified in 10 wild species of passion fruit producing 101 bands. All the markers were amplifiable for at least one species. The mean transferability was 68,8%, ranging from 15,4% (primer PE11) to 100 % (PE13, PE18, PE37, PE41 and PE88). Transferability was higher for the species from the Passiflora subgenus than for those from the Decaloba and Dysosmia subgenus. The results indicated a high level of nucleotide sequence conservation of the primer regions in the species evaluated, and consequently, they could potentially be...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Transferability; SSR; Passion fruit.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000500009

Evaluation of antagonistic activity of milk fermented with kefir grains of different origins
Provedor de dados: 52
Autores: Santos,João Paulo Victorino; Araújo,Tatiane Ferreira; Ferreira,Célia Lúcia de Luces Fortes; Goulart,Simone Machado.
In this study, the potential of kefir grains, obtained from three different towns/cities in the Southeast Region of Brazil to inhibit the growth of the five pathogenic microorganisms was evaluated. The samples showed the growth inhibition from 42.80-69.15 for Staphylococcus aureus ATCC 6538, 30.73-59.89 for Escherichia coli ATCC 11229, 44.99-73.05 for Salmonela typhi ATCC 6539, 41.45-54.18 for Listeria monocytogenes ATCC 15313 and 70.38-86.80 for Bacillus cereus RIBO 1222-173-S4. These results indicated that the kefir grains evaluated had antagonistic activity toward the different pathogens tested. The ability to inhibit, although differently depending on the regional microbiota, indicated a potential for their use as a functional food.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Kefir; Antagonism; Inhibitors; Functional foods.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000500014

Semen and reproductive parameters during some abstinence periods after cigarette smoke exposure in male rats
Provedor de dados: 52
Autores: Sankako,Michele Kimie; Garcia,Patricia Carvalho; Piffer,Renata Carolina; Pereira,Oduvaldo Câmara Marques.
Cigarette smoking is very widespread globally and can also be implicated in male and female infertility. This study aimed to evaluate the testicular function throughout a complete spermatic cycle during abstinence from cigarette smoke exposure in order to identify a possible residual damage and whether the parameters could recover spontaneously. Male Wistar rats were randomly divided into control and cigarette smoke-exposed (20 cigarettes/day/2 months) groups. After finishing the treatment, according to the number of days after the last cigarette exposure (0, 15, 30, or 60 days), the rats were euthanized and analyzed for compromised sperm count and quality. Results showed residual damage on sperm concentration, motility and morphology; the recovery of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cigarette; Semen; Spermatozoa; Testicular Function; Male Rat.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000100012

Influence of NaNO3 concentration and incident light intensity on Nannochloropsis oculata lipid accumulation
Provedor de dados: 52
Autores: Gris,Lara Regina Soccol; Paim,Anderson de Campos; Farenzena,Marcelo; Trierweiler,Jorge Otávio.
This study aimed at evaluating the best conditions for lipid accumulation in the marine microalga Nannochloropsis oculata in an airlift photobioreactor. Experiments were carried out following a central composite design with the following variables: temperature (19 to 29°C), sodium nitrate concentration (NaNO3) in the culture medium (f/2) (25 to 125 mg.L-1) and incident light intensity (49 to 140 µE.m-2s-1). The maximum lipid production was 132.4 mg.L-1 under the following conditions: 27°C, NaNO3 concentration 105 mg.L-1 and 122 µE.m-2.s-1, which was 30% of dry weight of the biomass.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nannochloropsis oculata; Airlift Photobioreactor; Central Composite Design; Lipid.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000400018

Broiler chicken PSE (Pale, Soft, Exudative) meat and water release during chicken carcass thawing and brazilian legislation
Provedor de dados: 52
Autores: Kato,Talita; Barbosa,Claudia Freitas; Ida,Elza Iouko; Soares,Adriana Lourenço; Shimokomaki,Massami; Pedrao,Mayka Reghiany.
The objective of this work was to investigate the relationship between poultry PSE meat and water loss of frozen chicken carcass in two experiments. The first experiment was carried out in commercial abattoir. Poultry carcass were classified as PSE meat (n=59) (pH &lt;5.8) and control samples (n=55) (pH &amp;gt;5.8). Water absorption and drip test were performed according to the Brazilian legislation methodologies. The second experiment was carried out with commercial whole five brands frozen carcasses purchased from the local supermarkets (n=30) and analyzed for pH, water holding capacity (WHC) and drip test. PSE poultry meats absorbed 3.59% of water during the processing similar to the control samples; however, released 0.38% more water during thawing of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Drip loss; Water absorption; Water holding capacity.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000600015

Role of killer factors in the inhibitory activity of bio-control yeasts against Penicillium expansum and Aspergillus ochraceus
Provedor de dados: 52
Autores: Portes,Ciro da Silva; Oliveira,Andriélen Virke de; Simer,Patrícia; Lunkes,Alessandra Machado; Coelho,Alexandre Rodrigo.
This work evaluated the antagonism of killer positive yeast strains (isolated from 11 samples of different frozen fruit pulps) against the strains of Penicillium expansum and Aspergillus ochraceus. Of the total 41 killer yeasts tested in YM agar, 19 showed antibiosis against P. expansum and A. ochraceus, with inhibition zone ranging from 10 to 18 mm and 10 to 19 mm, respectively. In the following step, the extracellular activity of Kluyveromyces sp. FP4(13) was tested performing the assay in YM broth. The antifungal activity of Kluyveromyces sp. FP4(13) cell-free culture supernatant (25ºC/96 h) was more effective against the conidia germination, showing inhibition rates of 93.33 and 86.44% for P. expansum and A. ochraceus, respectively. The micelial growth...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Moulds; Killer yeasts; Biocontrol; Antibiosis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000400012

Analysis of seven STR human loci for paternity testing by microchip electrophoresis
Provedor de dados: 52
Autores: Fraige,Karina; Travensolo,Regiane Fátima; Carrilho,Emanuel.
The aim of this work was to evaluate two paternity cases by microchip electrophoresis and the validation of the methodology by comparison of the results with those obtained in a commercial genetic analyzer. It was observed that when working with tetranucleotide regions, in which the minimal difference between the alleles was only four base pairs, the commercial microchip system did not present the resolution and repeatability needed. Nevertheless, the relative standard deviation was between 0 and 1.2% and the fragments detected were within the expected size ranges as described in the literature.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioanalyzer 2100; Paternity testing; Polymerase chain reaction; Short tandem repeats.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000200006

The effect of intermittent cryotherapy on the activities of citrate synthase and lactate dehydrogenase in regenerating skeletal muscle
Provedor de dados: 52
Autores: Oliveira,Nuno Miguel Lopes de; Durigan,João Luiz Quagliotti; Munin,Flávia Simone; Schwantes,Maria Luiza Barcelos; Salvini,Tania de Fátima.
This study examined the effect of three sessions of cryotherapy (three sessions of 30 minutes applied each 2 h) and muscle compression in the regenerating skeletal muscle of the rats. The middle belly of tibialis anterior muscle was injured by a frozen iron bar and received one of the following intervention: injury + cryotherapy (treated with cryotherapy); injury + placebo (sand pack), and injury (I).The enzymatic activities of citrate synthase (CS) and lactate dehydrogenase (LDH) were measured in the presence of 1mM or 10mM pyruvate. The ANOVA and Tukey's test (p&lt;0.05) were performed for the statistical analysis. In summary, the intermittent sessions of cryotherapy, associated to muscle compression and applied immediately after the primary muscle...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cryotherapy; Muscle injury; Enzymatic analysis; Hypothermia; Tibialis anterior; Rehabilitation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000100008

Expression of costimulatory molecules in antigen-activated peritoneal macrophages treated with either ovalbumin or palmitoyl-ova conjugates
Provedor de dados: 52
Autores: Oliveira,Flávia Márcia; Ruiz-de-Souza,Valéria; Campana-Pereira,Maria Aparecida; Gontijo,Cristiano Machado.
One of the mechanisms by which adjuvants are believed to promote T-cell activation and prevent induction of oral tolerance is by up-regulating the expression of co-stimulatory molecules on antigen presenting cells. Mice treated orally with palmitoyl-ovalbumin conjugates become immunized, while those treated with native ovalbumin (Ova) become tolerant. Cells from the peritoneal cavity of B6D2F1 mice were cultured in the presence of 0.01, or 0.1 mg/100ml of either Ova, or palmitoyl-Ova and tested for the presence of cell markers. PE-conjugated anti-mouse CD80, CD86, and CD11b antibodies as well as biotin-PE were used to stain the antigen-activated peritoneal cells. A significant increase in the expression of CD86 and CD80 was observed following in vitro...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ovalbumin; Palmitic Acid; Cellular Immunity; CD86; CD80; CD11b.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000600011

Stability evaluation of propolis topical bases for veterinary use
Provedor de dados: 52
Autores: Farias,Luana d'Avila; Pereira,Camila Bugnotto; Machado,Gustavo; Schmidt,Cleber Alberto; Vargas,Agueda Castagna de.
This study aimed to evaluate and select different dermatological bases incorporated with propolis for veterinary use as well as to analyze the chemical compounds of the propolis hydroalcoholic extract by LC-MS/MS. Thus, formulations were submitted to accelerated stability tests under different temperatures and to mechanical stress, and evaluated for the appearance, color, odor, pH, viscosity, spreadability, and the mean size of the dispersed globules from the internal phase during a period of three months. The creamy gel formulation showed satisfactory results for all the evaluated items with an excellent capability to incorporate the hydroalcoholic extract of propolis associated to the maintenance of its physicochemical properties. The propolis used in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Propolis; Accelerated stability; Phytotherapic; Caffeic acid.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000600008

Physico-chemical and sensorial evaluation of sugarcane spirits produced using distillation residue
Provedor de dados: 52
Autores: Menezes,Evandro Galvão Tavares; Alves,José Guilherme Lembi Ferreira; Valeriano,Carolina; Guimarães,Isabela Costa.
The objective of the present study was to analyze the use of vinasse from cachaça as an ingredient of the fermentation medium for the spirit production. The fermentations were conducted out in three successive batches using a Saccharomyces cerevisiae isolate. In the first batch, the sugarcane broth was only diluted with distilled water. In the second and third batches, the fermentations were carried out using the cane broth diluted with vinasse from the distillation of the sugarcane wines of the first and second batches, respectively at a concentration of 10% (v/v). The spirits were submitted to the physicochemical and sensorial analyses. The results showed that vinasse addition did not affect the fermentation, distillation and chemical-sensorial quality...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vinasse; Ethanol; Sugarcane spirits; Physico-chemical composition; Sensory analysis; Saccharomy cescerevisiae.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000100016

Effects of sub-lethal exposure of lead acetate on histopathology of gills, liver, kidney and muscle and its accumulation in these organs of Clarias gariepinus
Provedor de dados: 52
Autores: Al-Balawi,Hmoud Fares Alkahem; Al-Akel,Ali Sulaiman; Al-Misned,Fahad; Suliman,El Amin Mohamed; Al-Ghanim,Khalid Abdullah; Mahboob,Shahid; Ahmad,Zubair.
The aim of this work was to study the effects of sub-lethal exposure of lead acetate on the histopathology of the gills, liver, kidney and muscle and its accumulation in these organs of Clarias gariepinus. Results showed that lead accumulation in the tissues of C. gariepinus was dependent on the exposure period and lead concentration. Gills and liver were the predominant storage tissue and the order of accumulation in tissues was gill &gt; liver &gt; kidney &gt; muscle. Some structural changes were observed in different organs, especially in the gills of the fishes exposed to lead acetate. Epithelial hypertrophy and epithelial lifting were apparent in the gills of exposed fishes. The degeneration of cytoplasm and secondary lamellae was also observed....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Clarias gariepinus; Lead acetate; Accumulation; Histopathology.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000200015

Adsorption, immobilization and activity of cellulase in soil: the impacts of maize straw and its humification
Provedor de dados: 52
Autores: Sinegani,Ali Akbar Safari; Sinegani,Mahboobe Safari.
The present work aimed to study some aspects of sorption and immobilization of cellulase molecules on soil components by the analysis of the reactions of cellulase in a soil treated with different levels of maize residue and incubated for 90 days. The analysis of variance showed that the effects of the treatments of maize straw, incubation time and their interaction on cellulase adsorption, desorption and immobilization were statistically significant. The adsorption and immobilization capacities of soil by application of maize straw increased significantly. However they decreased with decreasing the soil organic matter (SOM) after 45 days of incubation. The desorption of adsorbed cellulase molecules from the soil by washing with distilled water depended on...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Maize straw; Humification; Cellulase; Sorption; Immobilization; Activity.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000600001

Improving Aspergillus niger tannase yield by N+ ion beam implantation
Provedor de dados: 52
Autores: Jin,Wei; Nie,Guangjun; Liu,Hui; Xiaoran,Yang; Gong,Guohong; Wang,Li; Zheng,Zhiming.
This work aimed to improve tannase yield of Aspergillus niger through N+ ion beam implantation in submerged fermentation. The energy and dose of N+ ion beam implantation were investigated. The results indicated that an excellent mutant was obtained through nine successive implantations under the conditions of 10 keV and 30-40 (×2.6×10(13)) ions/cm², and its tannase yield reached 38.5 U/mL, which was about five-time higher than the original strain. The study on the genetic stability of the mutant showed that its promising performance in tannase production could be stable. The studies of metal ions and surfactants affecting tannase yield indicated that manganese ions, stannum ions, xylene and SDS contained in the culture medium had positive effects on...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aspergillus niger; N+ ion implantation; Tannase.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000100018

Evaluation of Antimicrobial Activity of Glucose Oxidase from Aspergillus niger EBL-A and Penicillium notatum
Provedor de dados: 52
Autores: Zia,Muhammad Anjum; Riaz,Ayesha; Rasul,Samreen; Abbas,Rao Zahid.
This work aimed to study the production and purification of glucose oxidase by Aspergillus niger and Penicillium notatum using corn steep liquor as the substrate and evaluate its antimicrobial activity for use in pharmaceutical and food industries. The enzyme was purified by ammonium sulfate precipitation (60-85%), DEAE-cellulose ion exchange and Sephadex G-200 size exclusion chromatography. The crude enzyme extracts of A. niger and P. notatum showed 2.32 and 5.53 U mg-1 specific activities, respectively, which after desalting was 15.52 and 12.05 U mg-1, and after ion exchange and gel filtration chromatography was 29.09 - 62 and 25.72 - 59.37 U mg-1 for A. niger and P. notatum, respectively. The antimicrobial activity was determined by disc diffusion...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glucose oxidase; Antimicrobial; Aspergillus niger; Penicillium notatum.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000600010

Polymerase chain reaction (PCR) identification of terverticillate Penicillium species isolated from agricultural soils in eskişehir province
Provedor de dados: 52
Autores: Demirel,Rasime; Sariozlu,Nalan Yilmaz; İlhan,Semra.
In the present study, nine terverticillate Penicillium isolates (P. griseofulfum, P. puberulum, P. crustosum, P. aurantiogriseum, P. chrysogenum, P. primulinum, P. expansum, P. viridicatum, Eupenicillium egyptiacum) from 56 soil samples were characterized genetically by a PCR method. The DNAs of the strains were isolated using the glass beads and vortexing extraction method and then used for PCR amplification with the internal transcribed spacer 1 (ITS1) and ITS4 universal fungal specific primers. The ITS regions of fungal ribosomal DNA (rDNA) were sequenced through the CEQ 8000 Genetic Analysis System. ITS-5.8S sequences obtained were compared with those deposited in the GenBank Database. The results indicated that the identification of Penicillium...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Penicillium; Identification methods; PCR; ITS.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000600013

Action of a pancreatin and an Aspergillus oryzae protease on whey proteins: correlation among the methods of analysis of the enzymatic hydrolysates
Provedor de dados: 52
Autores: Morais,Harriman Aley; Silvestre,Marialice Pinto Coelho; Silveira,Josianne Nicácio; Silva,Ana Cristina Simões e; Silva,Viviane Dias Medeiros; Silva,Mauro Ramalho.
The objectives of this study were to hydrolyze whey proteins using a pancreatin and an Aspergillus oryzae protease; to evaluate the degree of hydrolysis (DH) and the peptide profile; and to establish the correlations among the analytical methods. Ten hydrolysates were prepared at different reaction times and the highest DH was obtained by the protein content method. Good correlations (r &gt; 0.87) between the methods of formaldehyde and orthophthalaldehyde (OPA), formaldehyde and osmometry as well as osmometry and OPA were observed using pancreatin. Similar results were obtained between OPA and soluble protein content for the A. oryzae protease. The action of pancreatin produced the highest contents of di- and tripeptides (9.07, 7.12 and 6.46%) and the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Whey; Protein Hydrolysates; Degree of Hydrolysis; Peptides; Pancreatin; Aspergillus oryzae Protease.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000600014

Estrus synchronization and Fixed Time Artificial Insemination (FTAI) in dairy buffaloes during seasonal anestrus
Provedor de dados: 52
Autores: Frares,Luciana Ferri; Weiss,Romildo Romualdo; Kozicki,Luiz Ernandes; Santangelo,Renata Prestes; Abreu,Renata Azevedo de; Santos,Ivo Walter do; Dell'aqua Junior,José Antonio; Breda,José Carlos.
The aim of this work was to study estrus synchronization and fixed time artificial insemination (FTAI) in dairy buffaloes during season anestrus. One hundred thirty-nine dairy buffaloes in seasonal anestrus were divided in two groups as G1(n=66) and G2(n=73). The protocols for both the groups were the same until day (D)14:D0 administration of 2.0 mg estradiol benzoate and implantation of progesterone device (P4) for 14 days; D14 removal of P4 plus 150 mg of cloprostenol and 400 IU of equine chorionic gonadotropin. On D16, G1 received 10 mg of buserelin and G2 100 mg deslorelin acetate. On D17, both the groups were submitted to FTAI. Ultrasonographic examinations of ovaries were performed on D0, D14, D16 and D17. Results showed that pregnancy rates in G1...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Estrus Synchronization; Seasonal Anestrus; Dairy Buffaloes; Deslorelin; Buserelin; FTAI.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000400007

Population dynamics of mixed cultures of yeast and lactic acid bacteria in cider conditions
Provedor de dados: 52
Autores: Dierings,Leila Roseli; Braga,Cíntia Maia; Silva,Karolline Marques da; Wosiacki,Gilvan; Nogueira,Alessandro.
The objective of this work was to study the malolactic bioconversion in low acidity cider, according Brazilian conditions. The apple must was inoculated with Saccharomyces cerevisiae or S. cerevisiae with Oenococcus oeni. The control contained the indigenous microorganisms. Fermentation assays were carried out with clarified apple must from the Gala variety. At the beginning of fermentation, there was a fast growth of the non-Saccharomyces yeast population. Competitive inhibition occurred in all the assays, either with inoculated or indigenous populations of the yeast. The lactic acid bacteria count was ca. 1.41·10²CFU/mL at the beginning and 10(6)CFU/mL after yeast cells autolysis. The lactic bacteria O. oeni reached the highest population (10(7)CFU/mL)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Apiculate yeast; Cider; Lactic acid bacteria; Alcoholic fermentation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000500016

Multivariate analysis of the spectroscopic profile of the sugar fraction of apple pomace
Provedor de dados: 52
Autores: Gabriel,Luciana Sutil; Prestes,Rosilene Aparecida; Pinheiro,Luís Antonio; Barison,Andersson; Wosiacki,Gilvan.
Pomace, the main by-product of apple juice processing, contains all the fruit's compounds such as minerals, sugars, fibers, enzymes and secondary metabolites after bioprocessing. Dried pomace from four apple varieties (Gala, Fuji, Catarina and Joaquina) was used to extract fructose, glucose, and sucrose, the main soluble sugars contained in apple pomace, to verify the possible use of the sugar fractions. The concentrated sugars were characterized by NMR and FTIR. The partial least squares method (PLS) applied to the NMR and FTIR spectra revealed large amounts of fructose, glucose, and sucrose, without the presence of others compounds. Principal component analysis (PCA) discriminated the studied apple varieties, with a 99% level of significance, as function...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Apple pomace; NMR; FTIR; Multivariate analysis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000300012

Supercritical CO2 extraction of Schinus molle L with co-solvents: mathematical modeling and antimicrobial applications
Provedor de dados: 52
Autores: Scopel,Rodrigo; Góes Neto,Roberto; Falcão,Manuel Alves; Cassel,Eduardo; Vargas,Rubem Mário Figueiró.
This work investigates the antimicrobial activity of the Schinus molle L. leaves extracts obtained under supercritical conditions using carbon dioxide and co-solvents. Antimicrobial qualitative evaluation was carried out through the bioautography technique and the microorganisms studied were Staphylococcus aureus, Pseudomonas aeruginosas, Escherichia coli, Micrococcus luteus, and Salmonella choleraesuis. The supercritical fluid extraction was carried out in a pilot scale equipment using carbon dioxide modified by the addition of co-solvents, such as ethanol and water at 150 bar and 333 K. A mathematical modeling of the process was also performed.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Supercritical extraction; Co-solvents; Schinus molle L; Antimicrobial applications.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000300020

Colon cancer and swimming exercise: effect on wistar rat testes
Provedor de dados: 52
Autores: Freitas,Karine Moura de; Natali,Antônio José; Lunz,Wellington; Costa,Kyvia Lugate Cardoso; Leite,Rodrigo Paula; Dolder,Heidi; Matta,Sérgio Luis Pinto da.
This study was undertaken to determine whether colon cancer (CC) and chronic swimming exercise alter rat testis. Eleven weeks old rats were distributed into control group (n=6) and the groups that were induced to develop CC by dimethylhydrazine injections (nEG, EG0, EG2 and EG4; n=10 each group). In the group nEG, the rats did not swim, whereas groups EG0, EG2 and EG4, underwent a swimming program with distinct loads (0, 2 and 4% of body mass, respectively) for 35 weeks. The morphometry, stereology and cell counts showed damage caused by the CC on the germ epithelium. These results were noteworthy since this was the first report to associate the CC with testicular damage. Swimming exercise had no significant role in reducing, or increasing the CC effects...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 1; 2-dimethylhydrazine fertility reproduction spermatogenesis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000400005

Screening of native yeast from Agave duranguensis fermentation for isoamyl acetate production
Provedor de dados: 52
Autores: Hernández-Carbajal,Gerardo; Rutiaga-Quiñones,Olga Miriam; Pérez-Silva,Araceli; Saucedo-Castañeda,Gerardo; Medeiros,Adriane; Soccol,Carlos Ricardo; Soto-Cruz,Nicolás Óscar.
In this work, fifty yeast strains, isolated from the spontaneous alcoholic fermentation of Agave duranguensis to produce mezcal, were tested using the double coupling system. These yeasts were from the genera Pichia, Torulaspora, Saccharomyces, Kluyveromyces, Deckera, Hanseniaspora, and Candida. P. fermentans ITD00165 was the best isoamyl acetate producer, yielding 0.38 g/L of ester after incubation for 24 h, while K. marxianus ITD00211 produced 0.32 g/L of ester. Thus P. fermentans TD00165 could be considered as an excellent choice for use in optimization studies of the culture medium and bioreactor operating conditions to develop a process for biotechnological production of isoamyl acetate.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Banana aroma; Food additive; Native yeast strains.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000300002

Physicochemical characterization of saccharides powder obtained from yacon roots (Smallanthus sonchifolius) by membrane technology
Provedor de dados: 52
Autores: Alles,Maria Julia Ledur; Tessaro,Isabel Cristina; Noreña,Caciano Pelayo Zapata.
Fructooligosaccharides (FOS) are food ingredients applied due to combination of prebiotic benefits and interesting technological properties, being used as a sugar substitute. The knowledge of their physicochemical characteristics is important for predicting the stability of the food products where they are added. For this reason, a saccharides powder extracted from yacon (Smallanthus sonchifolius) roots by membrane technology and freeze-dried was investigated. Color, water activity (aw), microstructure by Scanning Electron Microscopy coupled to Energy- dispersive X-ray Spectroscopy (SEM-EDS) and crystallinity by X-ray diffraction were evaluated. The obtained product, containing 19.75% FOS, 36.66% glucose and 43.59% fructose (w/w) was a whitish granulated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Yacon; Fructooligosaccharides; Microstructure; Cristallinity.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000600019

Determination of 4-vinylgaiacol and 4-vinylphenol in top-fermented wheat beers by isocratic high performance liquid chromatography with ultraviolet detector
Provedor de dados: 52
Autores: Zhu,Mingguang; Cui,Yunqian.
This work aimed at determining 4-vinylguaiacol and 4-vinylphenol in the top-fermented wheat beers using different wavelength and the mobile phase for HPLC. Best results for isocratic elution were obtained at 260 nm and the mobile phase comprising methanol/ultrapure water/phosphoric acid (400/590/10, V/V). Under these conditions, the retention time of 4-vinylguaiacol and 4-vinylphenol was 25 and 27min, respectively.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 4-vinylguaiacol; 4-vinylphenol; Top-fermented wheat beers; HPLC; Phenolic off-flavor.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000600018

Evaluation of different adjuvants formulations for bluetongue vaccine
Provedor de dados: 52
Autores: Macedo,Ludmila Branco; Lobato,Zélia Inês Portela; Fialho,Sílvia Ligório; Viott,Aline de Marco; Guedes,Roberto Maurício Carvalho; Silva-Cunha,Armando.
This study investigated the adjuvant potential of W/O/W multiple emulsions and microemulsions, comparing them with traditional aluminum hydroxide and oil-in-water emulsion adjuvants against bluetongue vaccine (BTV). Local inflammatory reactions were assessed in rabbits by measuring the temperature of the animals and the skin thickness at the site of application. Antibodies titers were determined by serum-neutralization test. Histological analyses of lesions at the site of adjuvants application were done. Results showed that multiple emulsion and microemulsion maintained their stability even in the presence of complex components and presented adequate characteristics for subcutaneous administration. They were able to induce immune response against BTV, but...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Emulsion; Microemulsion; Vaccine adjuvants; Immunology; Biocompatibility.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000600007

Histology and ultrastructure of the fat body of Anticarsia gemmatalis (HÜBNER, 1818) (LEPIDOPTERA: NOCTUIDAE)
Provedor de dados: 52
Autores: Carvalho,Renata Baldo Rodrigues; Andrade,Fábio Goulart de; Levy,Sheila Michele; Moscardi,Flávio; Falleiros,Ângela Maria Ferreira.
The aim of this study was to analyze the morphologically the fatty body of fourth-instar Anticarsia gemmatalis larvae under light, transmission and scanning electron microscopy. Two distinct portions of the fat body were detected: the parietal (PA) and perivisceral (PV). The PA, the parietal portion, presented a long-stripped shape located below the tegument and lateral to the digestive tube. The PV, rarely observed, was in dorsal region, adhered to digestive wall. Both the portions were constituted of only one cellular type, the trophocytes. These cells in the PA were organized in one layer of thickness showing cylindrical contiguously morphology, whereas the PV was comprised by a mass of small cells, superposed as clusters. Both the portions were covered...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Velvetbean; Caterpillar; Soybean.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000200016

Biological control of phytopathogenic fungi by endophytic actinomycetes isolated from maize (Zea mays L.)
Provedor de dados: 52
Autores: Costa,Francisco Gheler; Zucchi,Tiago Domingues; Melo,Itamar Soares de.
This work aimed a survey on the biodiversity of maize endophytic actinomycete, and an evaluation of their potential to control the phytopathogenic fungi. From several regions of São Paulo state, 40 strains were isolated from the healthy maize plants. The identification of these strains, based on morphological properties and fatty acid methyl ester (FAME) profile showed that most of them belonged to the Streptomyces genus. These isolates were first screened for the growth inhibition of phytopathogenic fungi and results showed that all the isolate were able to inhibit the development of at least one tested pathogen. Two selected isolates were then evaluated for the control of P. aphanidermatum in cucumber (Cucumis sativa L.) under greenhouse conditions....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Endophytes; Actinomycete; Streptomyces; Pythium aphanidermatum; Dumping-off.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000600009

Chemical composition and antibacterial activity of Aloysia triphylla (L'Hérit) Britton extracts obtained by pressurized CO2 extraction
Provedor de dados: 52
Autores: Parodi,Thaylise Vey; Vargas,Agueda Palmira de Castagna; Krewer,Carina; Flores,Érico Marlon de Moraes; Baldisserotto,Bernardo; Heinzmann,Berta Maria; Oliveira,José Vladimir de; Popiolski,Ariana Secco; Minozzo,Mariane.
This study investigated the chemical composition of five different extracts of Aloysia triphylla and their activity against Aeromonas sp. The extracts were obtained from the dried leaves by pressurized CO2 extraction at 30, 50 and 70ºC, and 100, 150, and 200 bar, and analyzed by GC/FID and GC-MS. The antibacterial activity was assayed by the microdilution method. The tested microorganisms comprised seven Aeromonas isolates obtained from the kidney of infected silver catfish, Rhamdia quelen. The yield, chemical composition and antibacterial activity of the extracts were dependent on the extraction conditions. Mono and sesquiterpenoids were the major constituents of all the extracts and the highest extraction yield was obtained at 70ºC and 200 bar. A....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aloysia triphylla; Pressurized carbon dioxide extraction; Aeromonas sp.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000200014

Comparison of two lipid extraction methods produced by yeast in cheese whey
Provedor de dados: 52
Autores: Castanha,Rodrigo Fernandes; Morais,Lilia Aparecida Salgado de; Mariano,Adriano Pinto; Monteiro,Regina Teresa Rosim.
This work aimed to evaluate nine strains of yeast, previously identified as good producers of lipids in honey medium, for selecting the most suitable strain for the production of lipids in cheese whey medium and compared two well known extraction methods of lipids from the culture medium. The highest yield of total lipids was 1.27 g.L-1 produced by Cryptococcus laurentii 11. A comparison was made between the two culture media: cheese whey and liquid YEPG, and two lipid extraction methods: Bligh and Dyer and Folch et al. for C. laurentii. The experiments were performed with 2² full factorial design using two factors and two levels. Lipid content was higher in cheese whey and there was no difference in the extraction methods statistically. The method of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cheese whey; Yeast; Lipid extraction; Microbial oil.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000400013

Influence of the presence and type of fragrance on the sensory perception of cosmetic formulations
Provedor de dados: 52
Autores: Gonçalves,Gisele Mara Silva; Srebernich,Silvana Mariana; Vercelino,Bartira Guiçardi; Zampieri,Bruna Melli.
The aim of the present study was to evaluate the sensory assessments of identical cosmetic formulations with and without fragrance to investigate not only the acceptance but also how different fragrances affected their attributes, such as skin feel, tackiness and spreadability. Three gel and three cream formulations with and without two types of fragrance, fennel and sweet flowers, were assessed for various attributes. The presence and type of fragrance used affected the testers' perception of some attributes, showing that the influence of this component should not be disregarded. Apparently, a consumer's reaction to a cosmetic product is not only based on its efficacy but also on how its attributes are perceived, such as appearance, skin feel and smell.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cosmetics; Development; Fragrance; Olfactory memory; Sensory.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000200005

Semliki forest virus as a vector: pros and cons for its use in biopharmaceuticals production
Provedor de dados: 52
Autores: Núñez,Eutimio Gustavo Fernández; Jorge,Soraia Attie Calil; Astray,Renato Mancini; Rezende,Alexandre Gonçalves de; Costa,Bruno Labate Vale da; Monteiro,Daniella Cristina Ventini; Pereira,Carlos Augusto; Tonso,Aldo.
The number of biopharmaceuticals for medical and veterinarian use produced in mammalian cells is increasing year after year. All of them are obtained by stable recombinant cell lines. However, it is recognized that transient gene expression produces high level expression in a short time. In that sense, viral vectors have been extensively used for producing recombinant proteins on lab-scale. Among them, Semliki Forest virus is commonly employed for this purpose. This review discusses the main aspects related to the use of Semliki Forest virus technology as well as its advantages and drawbacks which limit currently its utilization in biopharmaceutical industry on large-scale.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: BHK-21; Large-scale bioprocesses; Mammalian cells; Recombinant proteins; SFV; Transient expression.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000500018

Systems biology approach to study the high altitude adaptation in tibetans
Provedor de dados: 52
Autores: De,Bi; Huajun,Xiao; Cuihong,Zhou; Jun,Zhou; Xiaoyan,Deng; Xiaopeng,Liu.
The aim of this work was to study an integrative systems biology research strategy to construct a network including the protein-protein interactions (PPIs) and microRNAs (miRNAs) and identify the functional biological processes and pathways for high-altitude adaptation in Tibetans. The pathway enrichment analysis revealed that the genes in the network were mainly involved in signling the pathways and the function of microRNAs was concentrated in the signling pathways, which suggested that miRNAs might contribute to the Tibetans high-altitude adaptation through the participation in signaling pathway. These results contribute to better understanding on the high-altitude adaptation of the Tibetans.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Systems biology; Tibetan; High-altitude adaptation; Single nucleotide polymorphism; MicroRNA.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000100007

Changes in diapause related gene expression pattern during early embryonic development in HCl-treated eggs of bivoltine silkworm Bombyx mori (Lepidoptera: Bombycidae)
Provedor de dados: 52
Autores: Sasibhushan,Sirigineedi; Ponnuvel,Kangayam M.; Vijayaprakash,Nanjappa B.
Investigation of differential expression of diapause related genes (five metabolic, five heat shock protein and one translational regulatory) in HCl-treated (non-diapause) and untreated (diapause) eggs of B. mori during early embryogenesis (up to 48h following oviposition) revealed the up-regulation of sorbitol dehydrogenase upon HCl treatment, indicating increased glycogen synthesis for further embryonic development but, down-regulation of phosphofructo kinase gene expression after 18h of oviposition indicating an arrest of glycerol and sorbitol conversion. The expression of poly A binding protein gene expression was higher upon HCl treatment, revealing the initiation of translation. The expression levels of other genes analyzed did not vary...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hibernation; Acid treatment; Metabolic genes; Heat shock protein genes.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000100001

Antimicrobial activity of a biosurfactant produced by Bacillus licheniformis strain M104 grown on whey
Provedor de dados: 52
Autores: Gomaa,Eman Zakaria.
The aim of the present study was to investigate the antimicrobial effect of the lipopeptide biosurfactants produced by Bacillus licheniformis strain M104 grown on whey. The biosurfactant was investigated for potential antimicrobial activity by using the disc-diffusion method against different Gram-positive bacteria {B subtilis, B. thuringiensis (two strains), B. cereus, Staphylococcus aureus (two strains) and Listeria monocytogenes)}, Gram-negative bacteria {(Pseudomonas aeruginosa, Escherichia coli (two strains), Salmonella typhimurium, Proteous vulgaris and Klebsiella pneumoniae) and a yeast (Candida albicans)}. The biosurfactant showed profoundly distinct antibacterial activity toward tested bacteria and displayed an antifungal activity against the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biosurfactant; Bacillus licheniformis; Cheese whey; Antimicrobial activity; Staphylococcus aureus.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000200011

Demography and structures population of Actinostemon concolor (Spreng.) Müll. Arg. (Euphorbiaceae) in flooded areas in Southern Brazil
Provedor de dados: 52
Autores: Bianchini,Edmilson; Araújo,Carla Gomes de; Green,Márcia; Pimenta,José Antonio.
The aim of this work was to analyze the size and spatial structures and demography of Actinostemon concolor (Spreng.) Müll. Arg. (Euphorbiaceae) in the flooded areas of Mata dos Godoy State Park. Fifty plots of 100 m² were established and three surveys were conducted. All the individuals were measured, mapped and divided into categories as seedlings, juveniles and adults. The coefficient of skewness, L-function of Ripley, and the matrix population models were used in the study. The population showed positive coefficient of skewness and the individuals were distributed in groups. The population growth rates (λ) were equal or lower than 1.0 and the adult survival and recruitment of juvenile to adult were the vital rates that most affected the values of λ....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Elasticity; Matrix models; Spatial distribution; Structure size; Tropical tree.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000100009

Enhanced lipase recovery through RSM integrated differential evolutionary approach from the fermented biomass
Provedor de dados: 52
Autores: Garlapati,Vijay Kumar; Vundavilli,Pandu Ranga; Banerjee,Rintu.
The aim of this work was to apply a modeling integrated optimisation approach for a complex, highly nonlinear system for an extracellular lipase extraction process. The model was developed using mutation, crossover and selection variables of Differential Evolution (DE) based on central composite design of Response Surface Methodology. The experimentally validated model was optimized by DE, a robust evolutionary optimization tool. A maximum lipase activity of 134.13 U/gds (more than 36.28 U/gds compared to one variable at a time approach) was observed with the DE-stated optimum values of 25.01% dimethyl sulfoxide concentration, 40 mM buffer, 128.52 min soaking time and 35ºC with the DE control parameters, namely number of population, generations, crossover...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Modeling; Optimization; Lipase extraction; Response surface methodology; Differential evolution; Solid state fermentation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000500001

The genoprotective activity of resveratrol on permethrin-induced genotoxic damage in cultured human lymphocytes
Provedor de dados: 52
Autores: Turkez,Hasan; Aydin,Elanur.
The aim of this work was to investigate the genetic effects of resveratrol (RSV) at concentrations of 10, 15, 25, 40, 75 and 100 µM and its activities on the genotoxicity induced by the permethrin (PM) (200 µM). After the application of PM and RSV, separately and together, cultured human lymphocytes were assessed by chromosome aberrations (CA) and sister chromatid exchange (SCE) tests. According to results, the frequencies of CA and SCE rates in the peripheral lymphocytes were significantly increased by PM compared with the controls. However, RSV had no genotoxic effect. Furthermore, the findings revealed that PM-induced increases in the mean frequencies of both genotoxic indices were diminished by RSV in a clear dose dependent manner, indicating its...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chromosome aberration; Mutagenicity; Permethrin; Resveratrol; Sister chromatid exchange.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000300008

Escherichia coli in the surface waters and in oysters of two cultivations of Guaratuba Bay - Paraná - Brazil
Provedor de dados: 52
Autores: Forcelini,Helenita Catharina Dalla-Lana; Kolm,Hedda Elisabeth; Absher,Theresinha Monteiro.
The present work aimed to evaluate the contamination of Escherichia coli in the surface waters and oysters from two cultivations of Guaratuba Bay and to analyze the correlation patterns among the concentrations of E. coli in the waters and in the oysters with the local physical-chemical parameters. Samples were collected in the spring of 2007 and summer, autumn and winter of 2008 from two points of the bay (internal point and external point). From each cultivation and sampling period, 18 oysters were collected. The samples of surface water were collected for the measurement of physical-chemical parameters (pH, salinity, temperature, dissolved oxygen, seston, particulate organic matter) and quantification of E. coli. The surface water analyzed in the summer...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oysters; Escherichia coli; Guaratuba Bay.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000200018

Fox grape cv. Bordô (Vitis labrusca L.) and grapevine cv. Chardonnay (Vitis vinifera L.) cultivated in vitro under different carbohydrates, amino acids and 6-Benzylaminopurine levels
Provedor de dados: 52
Autores: Carvalho,Dayse Cristina de; Silva,André Luís Lopes da; Schuck,Mariane Ruzza; Purcino,Marivel; Tanno,Guilherme Nakao; Biasi,Luiz Antonio.
The aim of this work was to study the influence of sucrose and glucose, amino acids and BAP (6-Benzylaminopurine) levels on in vitro shoot regeneration of fox grape cv. Bordô and grapevine cv. Chardonnay. The nodal segments from micropropagated material were used as explants and half-strength MS medium as the basal medium. Sucrose and glucose at 15, 30 and 45 g.L-1 were tested as a carbon source and the supplementation of adenine, asparagine, alanine, glycine, cysteine, glutamine, arginine was tested at 40 g.L-1. The BAP levels (1 and 5 μM) in solid and double-phase media were evaluated and compared with a control medium without BAP. Bordô had best in vitro growth than Chardonnay. Sucrose was a better carbohydrate source than glucose for both the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arginine; Nodal segment; Glucose; Adenine; Glycine.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000200004

Simultaneous determination of Pb and Cd in seafood by ICP OES with on-line pre-concentration by solid phase extraction with amberlite XAD-4 after complex formation with DDTP
Provedor de dados: 52
Autores: Santos,Éder José dos; Santos,Arlene Bispo dos; Herrmann,Amanda Beatriz; Kulik,Suzete; Baika,Loana Mara; Tormen,Luciano; Curtius,Adilson José.
An on-line method for Cd and Pb pre-concentration and simultaneous determination in acid digested seafood by inductively coupled plasma optical emission spectrometry (ICP OES) was developed. The on-line pre-concentration was based on the complex formation of the analytes with the ammonium salt of O,O-diethyldithiophosphate (DDTP) and using the Amberlite XAD-4 resin as a solid support in a homemade column. Different conditions of the flow injection system, such as solutions flow rates, nebulizer pressure and eluent concentration were optimized. Three certified reference materials of lobster hepatopancreas, dogfish liver and fish protein, three samples of fish muscle and three samples of shrimp were digested with HNO3, H2O2 and H2SO4 in a microwave system...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cd; Pb; ICP OES; Diethyldithiophosphate; XAD-4; Seafood; Solid phase extraction.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000100017

Probiotics association in the suckling and nursery in piglets challenged with Salmonella typhimurium
Provedor de dados: 52
Autores: Afonso,Esther Ramalho; Parazzi,Larissa José; Marino,Carolina Tobias; Martins,Simone Maria Massami Kitamura; Araújo,Lucio Francelino; Araújo,Cristiane Soares da Silva; Vilela,Flávio Garcia; Moretti,Aníbal de Sant'Anna.
This work aimed to study the probiotics association in 144 piglets from birth to 62 days old. In lactation, the design was completely randomized with two treatments, CTL, 1 mL of distilled water and ProbA, 5g in 15 ml of distilled water, both orally, and in the nursery in randomized block design, with 2x3 factorial arrangement of treatments, ProbA ProbB: 30g/ton of ProbB in the ration; CTL ProbB: 30g/ton of ProbB in the ration; ProbA ProbA, CTL CTL; ProbA CHA (challenged); CTL CHA. At 35 days of age the animal of the nursery were inoculated with Salmonella typhimurium orally. There was no effect of the parameters evaluated during the maternity. In nursery, the feed conversion was favorable to the ProbA. In the evaluation of fecal score, the challenged...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacillus subtilis; Bifidobacterium pseudolongum; Lactobacillus reuteri; Challenge. Piglets.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000200010

Hexavalent chromium reduction by immobilized cells of Bacillus sphaericus AND 303
Provedor de dados: 52
Autores: Pal,Arundhati; Datta,Sudeshna; Paul,Amal K.
Bacillus sphaericus AND 303, a Cr(VI)-resistant and reducing bacterium reported from serpentine outcrops of Andaman was evaluated for Cr(VI) reduction using immobilized cells under batch culture. Screening of inert matrices for entrapment of whole cells indicated that polyvinyl alchohol-alginate was the most effective one reducing 87.5% of 20 µM Cr(VI) in 24 h. The rate of chromate reduction was dependent on initial Cr(VI) and biomass concentrations. The PVA cell beads were recycled three times without cell leakage and disintegration. The reduction efficiency was improved in the presence of glucose and glycerol as electron donors leading to complete reduction. However, the presence of additional metal ions was inhibitory to Cr(VI) reduction. It could be...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacillus sphaericus; Immobilized cells; PVA alginate; Cr(VI) reduction: Bioremediation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000300019

Anti-Candida activity and chemical composition of Cinnamomum zeylanicum blume essential oil
Provedor de dados: 52
Autores: Castro,Ricardo Dias de; Lima,Edeltrudes Oliveira.
The purpose of this study was to identify the anti-Candida activity and chemical composition of the essential oil (EO) of Cinnamomum zeylanicum (cinnamon). For this, tests were conducted to determine the Minimum Inhibitory Concentration (MIC) and Minimum Fungicidal Concentration (MFC) and the action of C. zeylanicum EO on fungal cell wall of Candida albicans, C. tropicalis and C. krusei strains. The composition of the was analysed by gas chromatography with mass spectrometry. Significant antifungal activity of the EO was observed on the strains tested, with 87.5% and 62.5% of them sensitive, respectively at a MIC of 312.5 µg/mL and MFC of 2500 µg/mL. In the presence of sorbitol, the MIC was 625 µg/mL against all the strains, showing a possible action of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Candidiasis; Cinnamomum zeylanicum; Essential oils.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000500005

Commercial preslaughter blue light ambience for controlling broiler stress and meat qualities
Provedor de dados: 52
Autores: Barbosa,Claudia Freitas; Carvalho,Rafael Humberto de; Rossa,Alessandro; Soares,Adriana Lourenço; Coró,Fábio Augusto Garcia; Shimokomaki,Massami; Ida,Elza Iouko.
The objective of this work was to study the effect of blue light diffuser on the broiler stress control by measuring the occurrence of PSE meat just before slaughtering. Birds were divided into the following two groups before slaughter at the point of being hung on shackles: broiler group under low intensity blue light ambience (475, 17-20 lx) and control group under white light (550-650nm, 321-332 lx). Birds' stressful conditions were measured by the occurrence of PSE meat. Breast fillets were classified as PSE meat based on pH (&lt;5.8) and lightness (L*&amp;gt; 53.0). The fillet samples in the control group had the following characteristics: pHu=5.77, L* = 54.26 and b*= 6.27. The fillet samples from birds under blue light ambience had the following...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Color; Preslaughter handlings; PSE meat.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000500013

Antioxidant and stabilization activity of a quercetin-containing flavonoid extract obtained from Bulgarian Sophora japonica L.
Provedor de dados: 52
Autores: Mihaylova,Dasha; Schalow,Sebastian.
This work aimed to study the antioxidant activity of a quercetin-containing flavonoid extract (FQЕ) obtained from Sophora japonica L. flower buds rich in quercetin (91.6%). Radical scavenging activity was analyzed towards the synthetic radicals DPPH• and ABTS•+ and antioxidant activity was evaluated applying the method of oxygen consumption in a model system containing methyl linoleate. Model food systems of lard and sunflower oil were explored by the application of Rancimat method and chicken as a real food system was investigated by the thiobarbituric acid test. Results showed a high radical scavenging activity and antioxidant capacity of QFE similar to those of the pure flavonoid quercetin.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sophora japonica L.; Antioxidant activity; Stabilization activity; Rancimat method.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000300011

Combined pig slurry and mineral fertilization for corn cultivation
Provedor de dados: 52
Autores: Prior,Maritane; Sampaio,Silvio César; Nóbrega,Lúcia Helena Pereira; Opazo,Miguel Angel Uribe; Dieter,Jonhatan; Pegoraro,Thaisa.
The objective of this work was to evaluate the environmental effects of the use of pig slurry to irrigate the corn crop grown in a typical Red Distroferric Latosol and in leachate composition. Twenty four lysimeters, filled with soil, in a protected environment, received five doses of pig slurry (0; 112.5; 225; 337.5 and 450 m³ ha-1 per growing cycle) combined with two mineral fertilization doses (50 and 75% of the recommended dose - 80 kg ha-1of nitrogen). Corn height and yield were evaluated, as well as nutrients in the soil and in leachate. From the results obtained in the first year of experiment, it was concluded that the concentrations of nitrate increased by increase of pig slurry application, and thus, it would be necessary to develop further...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nitrate leaching; Nutrients cycling; Zea mays L.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000200020

Enhanced solubilization of iron and calcium phosphates by Aspergillus niger by the addition of alcohols
Provedor de dados: 52
Autores: Barroso,Cinthya Babá; Nahas,Ely.
The present study deals with the effect of increased concentrations of alcohols (methanol and ethanol) on the solubilization of FePO4 and CaHPO4 by Aspergillus niger. The efficiency of solubilization (ES) of inorganic phosphates, fungal growth, acid production and pH variation were determined. The concentrations of alcohols that most favored the solubilization of phosphates were 4% methanol and 3% ethanol. The ES of phosphates by the fungus in media containing methanol ranged from 11-96% and 0.4-87% for ethanol. The stimulation or inhibition of solubilization was dependent on greater or lesser fungus growth, acid production and decreased pH. These responses were supported by the correlation between the amount of phosphate dissolved and fungal growth...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ethanol; Methanol; Growth; Acid production; Phosphate solubilization.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000200003

Production of grape juice powder obtained by freeze-drying after concentration by reverse osmosis
Provedor de dados: 52
Autores: Gurak,Poliana Deyse; Cabral,Lourdes Maria Correa; Rocha-Leão,Maria Helena.
This study aimed to evaluate the freeze-drying process for obtaining grape juice powder by reverse osmosis using 50% grape juice pre-concentrated (28.5 °Brix) and 50% hydrocolloids (37.5% maltodextrin and 12.5% arabic gum). The morphology of the glassy food showed the absence of crystalline structure, which was the amorphous wall that protected the contents of the powder. The samples were stored in clear and dark containers at room temperature, evaluated for their physical (X-ray diffraction) for 65 days and chemical (polyphenol content) stability for 120 days. During the storage time in plastic vessels, samples remained physically stable (amorphous) and the phenolic concentration was constant, indicating the potentiality of this technique to obtain a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phenolic compounds; Maltodextrin; Arabic gum; X-ray diffraction; Scanning electron microscopy.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000600017

In vitro evaluation of adhesion and aggregation abilities of four potential probiotic strains isolated from guppy (Poecilia reticulata)
Provedor de dados: 52
Autores: Balakrishna,Aparna.
The aim of this work was to study the probiotic-related characteristics of four strains of bacteria isolated from the normal flora of the guppy, Poecilia reticulata. In vitro results showed that the strains, namely, MBTU_PB1, MBTU_PB2, MBTU_PB3 and MBTU_PB4 had higher adhesion abilities than the tested indicator strains. However, an association between the cell-surface hydrophobicity and the ability to adhere to the intestinal mucus was not observed for these strains. Further, the selected strains were strongly autoaggregating (autoaggregation percentage ≥ 80) and also showed strain-specific coaggregation abilities with the tested indicator strains.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Probiotics; Adhesion; Aggreggation; Hydrophobicity; Poecilia reticulata.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000500010

Healing effect of the ointment made of Equisetum pyramidale in the treatment of cutaneous lesions in diabetic rats
Provedor de dados: 52
Autores: Corrêa,Andréia Cristina Lopes; Hans Filho,Guinter; Dourado,Doroty Mesquita; Matias,Rosemary; Silva,Iandara Schettert da; Sarragiotto,Maria Helena.
This study aimed to evaluate the anti-inflammatory and repair effects of the ethanolic extract and ointment of Equisetum pyramidale on the skin lesions of rats induced to diabetes. After the induction of diabetes with alloxan, a surgical procedure was performed on the back of each rat. Then, they were separated into treatment groups: G1 ethanol extract of E. pyramidale; G2-ointment (extract of E. pyramidale 80g + 20g of vaseline:lanolin 1:1); G3 control (vehicle vaseline:lanolin 1:1); and G4-no treatment during 3, 7 and 14 days. The samples were embedded in paraffin and stained with hematoxylin-eosin for histological analysis. The findings showed that the use of ethanolic extract as well as the ointment decreased the inflammatory cells at the site of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diabetes; Skin lesions; Medicinal plants; Anti-inflammatory activity; Reepithelialization tissue.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000300005

Properties of a biosurfactant produced by Bacillus pumilus using vinasse and waste frying oil as alternative carbon sources
Provedor de dados: 52
Autores: Oliveira,Juliana Guerra de; Garcia-Cruz,Crispin Humberto.
Biosurfactants are chemical molecules produced by the microorganisms with potential for application in various industrial and environmental sectors. The production parameters and the physicochemical properties of a biosurfactant synthesized by Bacillus pumilus using different concentrations of vinasse and waste frying oil as alternative carbon sources were analyzed. The microorganism was able to grow and produce a biosurfactant using both the residues. The surface tension was reduced up to 45 mN/m and the maximum production of crude biosurfactant was 27.7 and 5.7 g/l for vinasse and waste frying oil, respectively, in concentration of 5%. The critical micelle concentration (CMC) results of 1.5 and 0.2 g/l showed the efficiency of the biosurfactant produced...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biosurfactants; Vinasse; Waste frying oil; Bacillus pumilus.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000100020

Genotypic diversity and virulence factors of Streptococcus mutans in caries-free and caries-active individuals
Provedor de dados: 52
Autores: Braga,Miula Portelinha; Piovesan,Augusta; Valarini,Natália; Maciel,Sandra Mara; Andrade,Flaviana Bombarda de; Poli-Frederico,Regina Célia.
The objective of this study was to analyze the genotypic diversity, frequency of serotypes and the detection of mutacins from Streptococcus mutans isolates in caries-free and caries-active individuals.A total of 260 S. mutans isolated from 28 individuals with and without dental caries were subjected to AP-PCR and PCR screening of glucosyltransferase B, mutacin and serotype genes, which showed the presence of. 70 different genotypes. There was no statistically significant association between the presence of genes for serotypes and mutacins with dental caries. However, there was a statistically significant and a strong association between the higher genotypic diversity in the subjects with caries (r = 0.72, p = 0.001). There was an increase in the number of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dental caries; Genotypic diversity; Mutacin; Serotype; Streptococcus mutans.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000200009

Fruit development, pigmentation and biochemical properties of wax apple as affected by localized Application of GA3 under field conditions
Provedor de dados: 52
Autores: Khandaker,Mohammad Moneruzzaman; Boyce,Amru Nasrulhaq; Osman,Normaniza; Golam,Faruq; Rahman,M. Motior; Sofian-Azirun,M.
This study investigated the effects of gibberellin (GA3) on the fruit development, pigmentation and biochemical properties of wax apple. The wax apple trees were rubbing treated with 0, 20, 50 and 100 mgGA3/l under field conditions. The localized application (rubbing) of 50 mg GA3/l significantly increased the fruit set, fruit length and diameter, color development, weight and yieldcompared to the control. In addition, GA3 treatments significantly reduced the fruit drop. With regard to the fruit quality, 50 mg/l GA3 treatment increased the juice content, K+, TSS, total sugar and sugar acid ratio of wax apple fruits. In addition, higher vitamin C, phenol, flavonoid, anthocyanin, carotene content, PAL and antioxidant activities were recorded in the treated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fruit development; Pigmentation; Quality; GA3; Wax apple.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000100002

Effect of Wnt/β-catenin and NF-κB signaling pathways on mucus secretion with hypertonicity in 16HBE cells
Provedor de dados: 52
Autores: Xiaoyan,Liu; Xiangdong,Zhou.
This study aimed at identifying the molecular mechanisms and effects of hypertonicity on mucin5AC (MUC5AC) expression in airway epithelial cells for which immortalized human bronchial epithelial (16HBE) cells were cultured in 600 mOsm/L hypertonic medium for different times in vitro. Proteins of MUC5AC and β-catenin, Cyclin D1, NF-κB p65 were detected by enzyme linked immunosorbent assay (ELISA), reverse transcription (RT)-PCR and western blotting assays. After transfection of β-catenin siRNA in 16HBE cells, the levels of β-catenin, Cyclin D1, NF-κB p65 and MUC5AC protein were detected. Results showed that the levels of mRNAs and proteins of target genes increased significantly after the exposure to hypertonic conditions and the expression content...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: MUC5AC; Hypertonicity; Wnt/β-catenin; NF-κB p65.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000400006

Ethanol affects the absorption and tissue distribution of orally administered antigens in mice
Provedor de dados: 52
Autores: Oliveira,Flávia Márcia; Gusmão,Leandro José; Cardoso,Valbert do Nascimento; Ramaldes,Gilson Andrade; Ruiz-de-Souza,Valéria; Gontijo,Cristiano Machado.
The aim of this work was to evaluate the effects of ethanol on the adsorption and tissue distribution of orally administered antigens in mice. Results showed that ethanol reduced the level of anti-ovalbumin IgA antibodies in intestinal fluid for the mice treated orally with a palmitoyl-ovalbumin conjugate. Ethanol was administered intragastrically to mice at 5 g/kg body weight for 14 days (chronic treatment), or 10 g/kg body weight every 7th day up to 14 days (acute treatment). Thereafter, 99m technetium-labeled antigens were administered and lymphoid tissues were collected. Ethanol interfered with the transport of ovalbumin to the liver. Moreover, the transport of palmitoyl-ovalbumin to mesenteric lymph nodes was reduced 6 h after the antigen...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ethanol; Absorption; Biodistribution; Technetium; Immune response.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000400008

Cloning of Ammopiptanthus mongolicus C-repeat-binding factor gene and its cold-induced tolerance in transgenic tobacco
Provedor de dados: 52
Autores: Gu,Lijiang; Zhang,Han; Guo,Huiming; Cheng,Hongmei.
C-repeat-binding factors (CBFs) are a type of important regulon in stress-related signal transduction pathways that control plant tolerance of abiotic stress. Ammopiptanthus mongolicus is the only evergreen broadleaf shrub in the northwest desert of China. The species shows strong resistance to environmental stress, especially to cold stress. An A. mongolicus CBF1 gene (AmCBF1) was cloned and transformed into tobacco. Expression of AmCBF1 could be detected in A. mongolicus shortly after exposure to low temperature of 4°C. Analysis on ratio of electrolytic leakage, soluble sugar content, free proline content, malondialdehyde (MDA) content and peroxidase (POD) activity before and after cold treatment (4°C) for 24 h indicated AmCBF1 conferred higher cold...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ammopiptanthus mongolicus; C-repeat-binding factor; Gene transformation; Physiological index detection.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000600002

Growth performance, carcass characteristics and meat quality of finishing bulls fed crude glycerin-supplemented diets
Provedor de dados: 52
Autores: Françozo,Mônica Chaves; Prado,Ivanor Nunes do; Cecato,Ulysses; Valero,Maribel Velandia; Zawadzki,Fernando; Ribeiro,Ossival Lolato; Prado,Rodolpho Martin do; Visentainer,Jesuí Vergílio.
This study was conducted to evaluate the performance, carcass characteristics and chemical composition of Longissimusmuscle (LM) of the bulls. Twenty-four Nellore bulls were used in a complete randomised design. The bulls were randomly assigned to one of the three diets containing 0, 5 or 12% glycerin. Final BW and ADG were similar (P&amp;gt;0.05) between the bulls fed with 5 or 12% of glycerin but were higher (P&lt;0.10) compared to the bulls fed without glycerin. DMI and feed efficiency was not affected (P&amp;gt;0.05) by glycerin level. Hot carcass weight increased (P&lt;0.10) when glycerin was fed at 5%. Glycerin level did not affect (P&lt;0.05) the dressing percentage and fat thickness. LM increased (P&lt;0.10) when glycerin was fed at 12%. Dietary...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cattle; Fat; Glycerin; Human health; Silage corn.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000200019

Preparation of biological fish silage and its effect on the performance and meat quality characteristics of quails (Coturnix coturnix japonica)
Provedor de dados: 52
Autores: Ramírez,José Carmen Ramírez; Ibarra,José Inés; Romero,Francisco Arce; Ulloa,Petra Rosas; Ulloa,José Armando; Matsumoto,Keiko Shirai; Cordoba,Belinda Vallejo; Manzano,Miguel Ángel Mazorra.
The aim of the present study was to produce fish silage by lactic acid fermentation and evaluate its use in feeding of quails (Coturnix coturnix japonica). An oven-dried mixture of fish silage and soybean meal (1:1 w/w) was used to prepare the diets with different levels of inclusion (0, 10, 20 and 30%) and evaluate its effect on the performance and meat quality of 160 quails. The inclusion level did not affect the growth and feed conversion ratio. The carcass yield (70.3%) and sensory quality of breast meat were not significantly different among the treatments (p&amp;gt;0.05). However, the concentration of unsaturated fatty acids such as oleic (C18:1n9C), linoleic (C18:2n6C), linolenic (C18:3n3), arachidonic (C20:4n6), cis eicosapentaenoic (C20:5n3) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fish wastes; Biological silage; Quails feeding; Meat quality.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000600016

Biodeterioration studies of thermoplastics in nature using indigenous bacterial consortium
Provedor de dados: 52
Autores: Anwar,Mohd. Shahbaz; Negi,Harshita; Zaidi,Mohd. Ghulam Haider; Gupta,Sanjay; Goel,Reeta.
Thermoplastics, poly vinyl chloride and low-density polyethylene were treated in the presence of indigenously developed bacterial consortium in laboratory and natural conditions. The consortium was developed using four bacteria, selected on the basis of utilization of PVC as primary carbon source, namely P. otitidis, B. aerius, B. cereus and A. pedis isolated from the plastic waste disposal sites in Northern India. The comparative in-vitro treatment studies as revealed by the spectral and thermal data, illustrated the relatively better biodegradation potential of developed consortium for PVC than the LDPE. Further, the progressive treatments of both the thermoplastics were conducted for three months under natural conditions. For this purpose,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodeterioration; Bioformulation; Thermoplastic; FT-IR; SEM; TG-DTG-DTA.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000300016

Design and evaluation of famotidine mucoadhesive nanoparticles for aspirin induced ulcer treatment
Provedor de dados: 52
Autores: Patel,Dhaval J; Patel,Jayvadan K.
The present study was performed to design and evaluate the famotidine loaded mucoadhesive nanosuspension for aspirin induced ulcer. A 3-factor, 3-level Box-Behnken design was applied to study the effects of amount of the beads (X1), PVPK-30(X2) and Tween-80 (X3) on the particle size (Y1), and cumulative percentage drug released after 1h (Y2). The optimization was performed using the desirability function and contour plots. The scanning electron microscopy (SEM) showed the nanoparticles as spherical in shape. The differential scanning calorimetry (DSC) analysis indicated that there was substantial crystallinity change in the nanoparticle compared with the pure drug. Ex-vivo mucoadhesion study showed that famotidine mucoadhesive nanoparticles possessed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Famotidine; Nanosuspension; Box-Behnken design; Mucoadhesion; Peptic ulcer.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000200007

Antioxidant properties of some filamentous green algae (Chaetomorpha Genus)
Provedor de dados: 52
Autores: Farasat,Massoumeh; Khavari-Nejad,Ramazan-Ali; Nabavi,Seyed Mohammad Bagher; Namjooyan,Foroogh.
The antioxidant activity and the contents of total phenolics and flavonoids were quantified in the methanolic extracts of four Chaetomorpha species including C. aerea, C. crassa, C. linum and C. brachygona. Eight samples of Chaetomorpha plants were collected from five locations along the northern coasts of the Persian Gulf in south of Iran from December 2010 until October 2011. Methanolic extracts of the seaweeds were assessed for their antioxidant activity using DPPH radical scavenging assay. C. linum showed highest antioxidant potential with a relatively low IC50 (1.484 ± 0.168 mg mL-1), the highest flavonoid content (18.177 ± 2.238 mg RE g-1 ) and a relatively high content of phenolics (2.895 ± 0.415 mg GAE g-1) in comparison with the other species. C....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant; Phenolics; Flavonoid; DPPH; Green algae; Chaetomorpha.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000600005

Organogenesis from in vitro-derived leaf and internode explants of Hoya wightii ssp. palniensis -a vulnerable species of Western Ghats
Provedor de dados: 52
Autores: Lakshmi,Subbaiah Revathi; Benjamin,Jambarapu Herald Franklin; Kumar,Tirupathi Senthil; Murthy,Garimella Venkata Suryanarayana; Rao,Mandali Venkateswara.
An efficient system was developed for indirect plant regeneration from in vitro-derived leaf and internode explants of Hoya wightii ssp. palniensis. Maximum percentage of the organogenic callus was obtained on MS medium supplemented with NAA (1.0 mg/l) and 2,4-D (2.0 mg/l). The best shoot bud induction was observed on MS medium with BA (1.0 mg/l) +IBA (0.5 mg/l). The coconut water (15%) was better, resulting in a differentiation of the shoot initials in to well-developed shoots. The elongated shoots (› 3cm long) were rooted on a full strength MS basal medium, supplemented with 0.2 mg/l of IBA. Finally, the rooted plants were transferred to the soil with 80% success rate. This protocol was utilized for the in vitro propagation of this endangered plant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: In vitro explants; Organogenesis; Hoya wightii ssp. Palniensis; Vulnerable plant; Growth regulators.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000300010

Seasonal variability of coastal water quality in bay of Bengal and Palk Strait, Tamilnadu, Southeast Coast of India
Provedor de dados: 52
Autores: Srinivasan,Viswanathan; Natesan,Usha; Parthasarathy,Anitha.
The aim of this work was to study the physicochemical parameters of water quality collected from 12 sampling stations from Topputhurai to Muthupet in Vedaranyam located on the southeast coast of India from January to December 2008. Results showed that the DO and nutrients were the maximum in the Bay of Bengal during the monsoon period. High concentration of the nutrients in summer season was obtained near the Muthupet mangroves compared to the Palk Strait, which showed that this acted as a source of nutrients to the adjacent coastal waters. Low concentrations of the nutrients observed in the monsoon could be attributed to the terrestrial runoff from Muthupet lagoon. The physicochemical characteristics of coastal waters between the Point Calimere and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coastal zone; Physico-chemistry of water; Nutrients; Vedaranyam; Bay of Bengal; Palk Strait.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000500020

Spirulina as a protein source in the nutritional recovery of Wistar rats
Provedor de dados: 52
Autores: Moreira,Lidiane Muniz; Behling,Bruna del Sacramento; Rodrigues,Rosane da Silva; Costa,Jorge Alberto Vieira; Soares,Leonor Almeida de Souza.
This study was aimed at evaluating the effects of Spirulina (Arthrospira) as a protein source in the nutritional recovery of rats subjected to protein malnutrition. In order to understand such effects, responses of the developing body, serum biochemical profile, and blood count of animals were analyzed. A total of, 23 Wistar Rattus norvegicus were given a proteic diet (AIN-93G adapted) in malnutrition phase (phase I) for 10 days. After this period, the rats were separated into four groups according to the protein source (recovery phase): Control (C), casein 12%; Spirulina level I (S1), Spirulina 8.8% + casein 5.0%; Spirulina level II (S2), Spirulina 17.6% + casein 0.15%, and Spirulina level III (S3), Spirulina 26.4%. Recovery phase (phase II) lasted 30...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Protein malnutrition; Rats; Nutritional recovery; Rattus norvegicus; Spirulina.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000300013

Rust resistance in Arabic Coffee cultivars in northern Paraná
Provedor de dados: 52
Autores: Del Grossi,Leandro; Sera,Tumoru; Sera,Gustavo Hiroshi; Fonseca,Inês Cristina de Batista; Ito,Dhalton Shiguer; Shigueoka,Luciana Harumi; Andreazi,Elder; Carvalho,Filipe Gimenez.
The objective of the study was to evaluate the resistance to rust in coffee cultivars developed by research institutes of Brazil in Paraná state. Resistance to the local leaf rust races was assessed in high disease intensity field conditions at Londrina and Congonhinhas in 2009 and 2010.The cultivars were developed by the EPAMIG/UFV, IAPAR, IAC and MAPA/Procafé. The resistant standard 'IAPAR 59' and the susceptible standards Catuaí Vermelho IAC 144' and 'Bourbon Amarelo' were used. A randomized block design with three replications and plots with 10 plants was used. A scale from 1 to 5 based on the rust intensity was used to evaluate the resistance. The Catiguá MG 1, Catiguá MG 2, IAPAR 59, IPR 98, IPR 104, Palma II, Paraíso H-419-10-6-2-5-1, Paraíso...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Breeding; Coffea; Hemileia vastatrix; Híbrido de Timor; SH genes.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000100004

Ardra profiles of bacteria and archaea in mangrove sediments with different levels of contamination in the estuarine complex of Paranaguá, Brazil
Provedor de dados: 52
Autores: Ribeiro,Catherine Gérikas; Steffens,Maria Berenice Reynaud; Etto,Rafael Mazer; Galvão,Carolina Weigert; Martins,César de Castro; Pedrosa,Fábio de Oliveira; Kolm,Hedda Elisabeth.
The mangrove's sediments from the coastal areas under human activities may contain significant contaminations by hydrocarbons, even when there are no visual evidences of it. The microorganisms are essential to these ecosystems, especially in the control of their chemical environment. Sediment samples were collected in two regions under different environment conditions (pristine and contaminated) of the Paranaguá Estuarine Complex (Paranaguá Bay and Laranjeiras Bay), Brazil. Aliphatic hydrocarbons were determined by the GC-FID to assess the status of contamination of the studied areas. The total DNA was extracted from these samples. The 16S rRNA gene was amplified by the PCR reactions with the pair of primers 21F and 958R for the archaeal domain, and 27F...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diversity; Mangroves; Archaea; Bacteria; 16S rRNA; ARDRA; Aliphatic hydrocarbons.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000200013

Influence of thickness on properties of plasticized oat starch films
Provedor de dados: 52
Autores: Galdeano,Melicia Cintia; Wilhelm,Allan Eduardo; Mali,Suzana; Grossmann,Maria Victória Eiras.
The aim of this study was to investigate the effect of thickness (between 80 and 120 µm) on apparent opacity, water vapor permeability and mechanical properties (tensile and puncture) of oat starch films plasticized with glycerol, sorbitol, glycerol:sorbitol mixture, urea and sucrose. Films were stored under 11, 57, 76 and 90% relative humidity (RH) to study the mechanical properties. It was observed that the higher the thickness, the higher was the opacity values. Films without the plasticizer were more opaque in comparison with the plasticized ones. Glycerol:sorbitol films presented increased elongation with increasing thickness at all RH. Puncture force showed a strong dependence on the film thickness, except for the films plasticized with sucrose. In...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plasticizers; Tensile; Puncture; Permeability; Opacity; Glycerol.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000400014

The genus Enterococcus as probiotic: safety concerns
Provedor de dados: 52
Autores: Araújo,Tatiane Ferreira; Ferreira,Célia Lúcia de Luces Fortes.
Species from the genus Enterococcus have been used as probiotic for humans or animals, although this genus is not considered "generally recognized as safe" (GRAS). While enterococci are considered "positive" in food technology, isolates of this genus have emerged as opportunistic pathogens for the humans. The aim of this review is to summarize the characteristics that can determine the use of this genus as probiotics. According to the guidelines used to define the genus Enterococcus strains as probiotic a case-by-case evaluation of each potential technological strain is presented and research perspectives for using enterococci as probiotic is also discussed.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Disease; Enterococcus; Probiotic; Safety aspect.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000300014

Separation of polyhydroxyalkanoates-producing bacterial strains using PHA synthase gene and their evaluation for PHA deposition
Provedor de dados: 52
Autores: Khan,Abdul Basit; Khattak,Mehmood Iqbal; Tarar,Omer Mukhtar; Habib,Farzana; Jamil,Khalid; Yasmin,Arfa; Parvez,Shoukat.
In this study, a variety of samples were screened for the presence of PHA synthase gene. Results showed that 16 out of 102 isolated were positive for PHA respective genes. The highest prevalence was observed in Pseudomonas aeruginosa. The capability of PHA production was also shown by growing these strains on the defined medium and subsequent analysis using intracellular granules staining and Fourier transform infrared spectroscopy (FT-IR). The microscopic analysis showed that the positive strains accumulated PHA in the cell. The FT-IR analysis showed the presence of PHA peaks in the dried cells as well as in extraction product. P aeruginosa strain P7 showed higher concentration of PHA compared to the others as demonstrated by the highest respective peaks...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Polyhydroxyalkanoates; Biodegradable polymers; PHA synthase gene; FTIR.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000400015

Use of bee-attractants in increasing crop productivity in Niger (Guizotia abyssinica. L)
Provedor de dados: 52
Autores: Sivaram,Venkataramegowda; Jayaramappa,Koragandahalli Venkateshappa; Menon,Anita; Ceballos,Ruben Michael.
The use of bee attractants, Bee-Q and Fruit BoostTM in the pollination of niger was evaluated. Bee visitations to niger flowers were observed for two weeks and an estimation of seed yield was determined. Different concentrations of Bee-Q and Fruit boostTM were evaluated to understand honeybee visitation patterns on the target crop and pollination efficiency. Results indicate that applications of Bee-Q at 12.5 g/l and Fruit boost at 0.75 ml/l on niger plots significantly increased the number of bee foragers over control plots. In addition, plots sprayed with these bee attractants significantly enhanced the seed set, seed weight, and germination of niger. This study suggests that pheromone-based bee attractants applied to niger can increase the marginal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bee-attractants; Honeybee; Guizotia abyssinica; Niger; Pollinators.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000300003

Nephroprotective and anti-inflammatory effects of aqueous extract of Melissa officinalis L. on acetaminophen-induced and pleurisy-induced lesions in rats
Provedor de dados: 52
Autores: Müzell,Denise Pereira; Lunardelli,Adroaldo; Leite,Carlos Eduardo; Fagundes,Rodrigo Medeiros; Saciura,Vasyl Custódio; Reichel,Carlos Luiz; Oliveira,Jarbas Rodrigues de; Astarita,Leandro Vieira.
This study assessed the bioactive properties of an aqueous extract of M. officinalis for its anti-inflammatory activity and its protection against hepatic and renal lesions induced by acetaminophen (APAP). Animals pre-treated with the crude extract in pleurisy induced by carrageenan showed a reduction in the amounts of exudate, in the numbers of leukocytes and polymorphonuclear cells. Intragastric administration of the extract for seven days prior to the APAP-induced lesion showed no protective effect on the liver. The treatment with the extract induced an increase of serum aspartate aminotransferase, indicating a rise of toxicity. Contrarily, the same treatment reduced the APAP induced lesion in kidney, with respect to ν-glutamyltransferase. The results...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acetaminophen; Melissa officinalis; Pleurisy; Anti-inflammatory; Kidney; Liver.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000300006

Mutation breeding of lipase-producing strain Flavobacterium sp. by supercritical CO2 with hydrazine hydrate
Provedor de dados: 52
Autores: Zhang,Qiaoyan; Qian,Junqing; Ma,Lingzhi.
This work aimed to obtain an ideal mutant strain with higher lipase yield using hydrazine hydrate (HZH) as a novel additive to treat Flavobacterium sp. strain YY25 by supercritical CO2. The survival rate and the positive mutation rate of the tested strain were strongly dependent on the dose of HZH. The treatment by 0.5% HZH in supercritical CO2 (8 MPa, 35°C) for 30 min provided 58.3% of positive mutation rate and an expected mutant strain with about 76.7% increase in lipase yield compared with the wild strain. Possible mutagenesis mechanisms were further explored. The analysis on pH drop of the treated seed liquid was performed to better understand the interaction. Results proved that the induced mutation with enhanced yield of lipase could be achieved by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Supercritical CO2; Mutation; PH Drop; Lipase; Flavobacterium sp.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000400003

Mesenchymal stem cells: emphasis in adipose tissue
Provedor de dados: 52
Autores: Bertassoli,Bruno Machado; Assis Neto,Antonio Chaves de; Oliveira,Franceliusa Delys de; Arroyo,Maria Angélica Machado; Ferrão,Juliana Shimara Pires; Silva,Jodonai Barbosa da; Pignatari,Graciela Conceição; Braga,Patrícia Beltrão.
The study of stem cells has evolved rapidly in recent decades. The importance is given to the concept that these cells are potentially able to become any cell type and have the power of self-renewal throughout the life of the organism. Mesenchymal stem cells (MSCs) can be isolated from various organs of the body such as bone marrow, adipose tissue, synovium, muscle and dermis, deciduous teeth, umbilical cord, placenta, liver, spleen and thymus. After their isolation in vitro, mesenchymal stem cells have the capacity to differentiate into various mesenchymal lineages and various tissues after the use of appropriate cultures. Studies have reported that mesenchymal stem cells from adipose tissue have the potential to differentiate themselves, like the cells...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Adipose Tissue; Stem Cells; Mesenchymal Stem Cells.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000400011

Characterization of the biomass of a hybrid anaerobic reactor (HAR) with two types of support material during the treatment of the coffee wastewater
Provedor de dados: 52
Autores: Silva,Vivian Galdino da; Campos,Cláudio Milton Montenegro; Pereira,Erlon Lopes; Silva,Júlia Ferreira da.
This study investigated the microbiology of a hybrid anaerobic reactor (HAR) in the removal of pollutant loads. This reactor had the same physical structure of an UASB reactor, however with minifilters inside containing two types of support material: expanded clay and gravel. Two hydraulic retention times (HRT) of 24h and 18h were evaluated at steady-state conditions, resulting in organic loading rates (OLR) of 0.032 and 0.018 kgDBO5m-3d-1 and biological organic loading rates (BOLR) of 0,0015 and 0.001 kgDBO5kgSVT- 1d¹, respectively. The decrease in concentration of organic matter in the influent resulted an endogenous state of the biomass in the reactor. The expanded clay was the best support material for biofilm attachment.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural microbiology; Endogenous; Anaerobic process; Agro-industrial wastewater treatment; Rural sanitation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000300018

Horizontal transmission and effect of the temperature in pathogenicity of Beauveria bassiana against Diatraea saccharalis (Lepidoptera: Crambidae)
Provedor de dados: 52
Autores: Svedese,Virgínia Michelle; Lima,Elza Áurea de Luna Alves; Porto,Ana Lúcia Figueiredo.
The aim of this work was to evaluate the effect of temperature on the pathogenicity of Beauveria bassiana against Diatraea saccharalis and evaluate the horizontal transmission capacity among the sugarcane borer larvae. The strains were most pathogenic at 26ºC, followed by 32ºC than at 20ºC, with respective mortalities of 100, 50 and 30.3%. The lethal time was also affected by the temperature, with the shortest LT 50 observed at 26ºC (2.2 days) and the longest at 20ºC (16.2 days). The URM2915 strain appeared most effective in all the experiments as having potential for deployment in biological control programs for the sugarcane borer. Results in horizontal transmission of B. bassiana showed that this procedure could also be adopted as control strategy for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sugarcane borer; Lepidoptera; Entomopathogenic fungus; Biological control; Autodissemination.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000300009

Bioethanol production from sweet potato (Ipomoea batatas L.) flour using co-culture of Trichoderma sp. and Saccharomyces cerevisiae in solid-state fermentation
Provedor de dados: 52
Autores: Swain,Manas Ranjan; Mishra,Jyoti; Thatoi,Hrudayanath.
The aim of this work was to study the optimiation of co-culturing of Trichoderma sp. and Saccharomyces cerevisiae (1:4 ratio) on sweet potato (Ipomoea batatas L.) flour (SPF) for the production of bio-ethanol in solid-state fermentation (SSF). Maximum ethanol (172 g/kg substrate) was produced in a medium containing 80% moisture, ammonium sulphate 0.2%, pH 5.0, inoculuted with 10% inoculum size and fermented at 30ºC for 72h. .Concomitant with highest ethanol concentration, maximum ethanol productivity (2.8 g/kg substrate/h), microbial biomass (23×10(8) CFU/ g substrate), ethanol yield (47 g/100g sugar consumed) and fermentation efficiency (72%) were also obtained under these conditions. Cell interaction was observed familiar between the viable cells of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Trichoderma sp.; Saccharomyces cerevisiae; Sweet potato flour; Solid state fermentation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000200002

Cytokinin Dehydrogenase activity in primary roots and characterization of primary metabolites from leaves and rootlets of Ricinus Communis
Provedor de dados: 52
Autores: Marques,Maria Elizabeth da Costa; Freitas,Beatriz Tupinambá; Guedes,Tarciana Oliveira; Fernandes,Roberta Pereira Miranda.
The aim of this study was to determine the activity of cytokinin dehydrogenase (CKX) and to measure other biochemical components in the primary leaves and radicles of castor seedlings (BRS Energia) in the initial phase of growth. The crude protein extract obtained after a 1-h extraction from the root tissues of seedlings showed no detectable CKX enzymatic activity when incubated with the substrate isopentenyl adenine for 1 h. However, after precipitation with ammonium sulfate at 70% saturation, the pellet showed CKX activity. The peroxidase enzyme activity was higher in the leaves than in the radicles. The total and reducing sugar content was 1.5 times higher in the leaves than in the radicles. The amino acid and protein contents were 6.4 and 9.2 times...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Castor plant; Cytokinin dehydrogenase; Biochemical characterization; Peroxidase.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000600003

Azo dye degradation by Phanerochaete chrysosporium in the medium enriched with nitrogen in the presence of primary co-substrate
Provedor de dados: 52
Autores: Andrade,Marcus Vinicius Freire; Silva,Karla Mayara Lima da; Siqueira,João Paulo da Silva; Wanderley,Carlos Ronald Pessoa; Araújo,Rinaldo dos Santos; Marinho,Gloria; Rodrigues,Kelly.
This work sought to evaluate the ability of fungi Phanerochaete chryosporium to degrade congo red azo dye in batch reactor, evaluate the influence of glucose and wheat bran as co-substrates on the removal of the dye in the medium and investigate the influence of ammonium chloride, ammonium nitrate and ammonium sulfate as the inorganic nitrogen source for the process. Wheat bran was not effective satisfactorily for the removal of dye and organic matter had no desired effect for the removal of color and organic matter and showed the lowest values of k2, 0.008 M-1.d-1and 0.0004 M-1.d-1, respectively. Glucose presented the best response with the highest final percentage of dye removal (97%) and rate of dye removal (0.017 M-1.d-1), without adding an external...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Wheat bran; Glucose; Congo red; Fungi; Nitrogen.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000500019

Somatic embryogenesis of Neoglaziovia variegata (Arruda) Mez, an important source of fiber from native Brazilian bromeliads
Provedor de dados: 52
Autores: Silveira,Daniela Garcia; Lino,Lucimeire Souza Morais; Souza,Antônio da Silva; Souza,Fernanda Vidigal Duarte.
Neoglaziovia variegata (Arruda) Mez, a Bromeliad endemic to the Brazilian Caatinga and source of fiber for many different products, is considered an endangered species. Leaf and stem segments were cultivated on Murashige and Skoog (MS) medium with combinations of 2,4- dichlorophenoxyacetic acid (2,4-D) (0, 9, 18 and 27 µM) and glutamine (0, 50, 100, 150, 200 mg L-1) for the induction of embryogenic calli. Leaf segments did not present a favorable response for the combinations analyzed. The best response for embryogenic calli frequency with the best distribution of somatic embryos on the surface and better conversion rate was obtained using the stems explants in the medium containing 18 µM 2,4-D and 100 mg L-1 glutamine. The embryogenic calli obtained from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Caroá Bromeliaceae tissue culture 2; 4-D glutamine.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000400004

Immunization of hybrid surubim (Pseudoplatystoma corruscans x P. fasciatum) against Motile Aeromonas hydrophila septicemia
Provedor de dados: 52
Autores: Silva,Bruno Correa da; Jatobá,Adolfo; Vieira,Felipe do Nascimento; Mouriño,José Luiz Pedreira; Bolívar,Norha; Seiffert,Walter Quadros; Martins,Mauricio Laterça.
The aim of this study was to evaluate the immune response of hybrid surubim vaccinated by intraperitoneal injection and by immersion against Aeromonas hydrophila. Vaccine was prepared with formalin-inactivated A. hydrophila. Forty eight fishes (47±9g) were distributed in 12 tanks (4 fish / tank) in the following treatments (4 tanks / treatment): unvaccinated fish, vaccinated intraperitoneally and vaccinated by immersion. After 21 days, intraperitoneally vaccinated fishes showed the highest values of total protein and immunoglobulins, agglutination titer and serum antimicrobial activity. Lysozyme concentration in the serum was higher in the fishes vaccinated by immersion than unvaccinated fishes. Intraperitoneal vaccination induced the highest immune...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pseudoplatystoma; Aeromonas hydrophila; Vaccine; Immunology.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000100010

Effect of carrageenan addition on the yield and functional properties of charqui (Jerked Beef)
Provedor de dados: 52
Autores: Garcia,Carlos Eduardo Rocha; Yamashita,Fabio; Youssef,Elza Youssef; Prudencio,Sandra Helena; Shimokomaki,Massami.
The objective of this work was to evaluate the application of carrageenan (CAR) to improve the functional properties of the jerked beef (JF) and to increase its processing yield. JB produced from Vastus lateralis with CAR (1.0%) at 25ºC and NaCl (15.0%) had approximately 15.0% higher moisture and a 32.0% higher processing yield in comparison to the control samples.JB-CAR presented shear force approximately 5.0 and 20% lower in the samples uncooked salted and desalted cooked, respectively, and sensorial acceptance above 80%. The results demonstrated the possibility of applying carrageenan to jerked beef in order to obtain an increase in the processing yield and a tender product while maintaining the sensorial quality and its intermediate-moisture meat...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Additives; Hydrocolloids; Meat products; Texture.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000200017

Purification of metallo-B-lactamase CcrA from Bacteroides fragilis with salting-out method
Provedor de dados: 52
Autores: Liu,Cheng-Cheng; Zhai,Le; Shi,Ying; Yang,Ke-Wu.
A simple and effective salting-out method was developed for the purification of the metallo-β-lactamase CcrA from Bacteroides fragilis based on the plasmid pMSZ02, in which the crude protein secreted into growth medium was precipitated by 80% sulfate saturation of the medium and purified with Q-Sepharose to offer pure CcrA with yield of 20.1 mg per litter medium. The dependence of the amount of protein precipitation on sulfate saturation was investigated, which showed that more than 80% sulfate saturation resulted the maximum protein precipitated. The purified CcrA was evaluated by steady-state kinetics using penicillin G and cephalothin V as substrates, which showed the Km values of 68±2 and 17±2 µM and Kcat values of 63±1 and 102±3 S-1, respectively. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Metallo-B-lactamase CcrA; Plateau elution profile; Purification; Salting-out method.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000500012

Influence of integral and decaffeinated coffee brews on metabolic parameters of rats fed with hiperlipidemic diets
Provedor de dados: 52
Autores: Gomes,Júlia Ariana de Souza; Faria,Bruno Generoso; Silva,Viviam de Oliveira; Zangerônimo,Márcio Gilberto; Miranda,José Rafael; Lima,Adriene Ribeiro de; Pereira,Rosemary Gualberto Fonseca Alvarenga; Pereira,Luciano José.
The objective of this study was to evaluate the influence of integral and decaffeinated coffee brews (Coffea arabica L and C. canephora Pierre) on the metabolic parameters of rats fed with hyperlipidemic diet. Thirty male Wistar rats (initial weight of 270 g ± 20 g) were used in the study, which were divided into six groups five each. The treatments were normal diet, hyperlipidemic diet, hyperlipidemic diet associated with integral coffee arabica or canephora brews (7.2 mL/kg/day) and hyperlipidemic diet associated to decaffeinated arabica, or canephora brews, using the same dosage. After 41 days, performance analyses were conducted.The rats were then euthanized and the carcasses were used for the analysis of dried ether extract and crude protein....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lipids; Adipocytes; Hyperlipidemia; Caffeine; Decaffeination.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000500015

First record of partial albinism in two catfish species of Genidens (Siluriformes: Ariidae) in an estuary of Southern Brazil
Provedor de dados: 52
Autores: Leal,Mateus Evangelista; Schulz,Uwe Horst; Albornoz,Pablo Lehmann; Machado,Rodrigo; Ott,Paulo Henrique.
This study reports the first occurrence of partial albinism in two species of Ariidae: Genidens barbus and Genidens planifrons from an estuary of Southern Brazil. Possible causes of the simultaneous occurrence of three specimens with partial albinism are discussed, including random genetic alterations, chronic contamination effects and small effective population size, which may favor the expression of the recessive albino gene.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Estuarine fishes; Genidens barbus; Genidens planifrons; Leucism.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000200008

Effect of ractopamine on lipid metabolism in vivo - a systematic review
Provedor de dados: 52
Autores: Ferreira,Matheus Soares da Silva; Garbossa,Cesar Augusto Pospissil; Oberlender,Guilherme; Pereira,Luciano José; Zangeronimo,Márcio Gilberto; Sousa,Raimundo Vicente de; Cantarelli,Vinícius de Souza.
The aim of this article was to evaluate the in vivo mechanism of action through which ractopamine reduces the amount of adipose tissue in carcass of animals fed diets supplemented with this drug. Literature search was carried out, using the keywords Ractopamine, lipogenesis, lipolysis, fatty acid and adipose tissue. The scoring system was designed for the adequacy of the methodology. A total of eight papers were found - all published in the English language. The determination of lipolysis and lipogenesis was carried out using different methods - from the quantification of non-esterified fatty acids in the blood to molecular analyses of adipose tissue. The review analysis suggested that, at least in the pigs, the use of this drug reduced lipid deposition in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Β-adrenergic agonist; Lipogenesis; Lipolysis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000100005

Antioxidant potential of tomatoes cultivated in organic and conventional systems
Provedor de dados: 52
Autores: Borguini,Renata Galhardo; Bastos,Deborah Helena Markowicz; Moita-Neto,José Machado; Capasso,Fernanda Sobral; Torres,Elizabeth Aparecida Ferraz da Silva.
The objective of the study was to compare the effect of organic and conventional cultivation on the antioxidant compound content and antioxidant activity of the Carmen tomato cultivar. Tomatoes were analyzed regarding ascorbic acid, phenolic compounds, lycopene content and antioxidant activity. Organic tomatoes presented higher content of ascorbic acid and total phenolics (641.39 and 4466.66 mg/100 g EAG on dry wt basis) than did the conventional tomatoes (510.16 and 3477.50 mg/100 g EAG on wt dry basis, respectively). There was no difference in lycopene concentrations between the organic and conventional. The ether, alcohol and aqueous extracts obtained from the tomatoes were subjected to the DPPH test and the β-carotene/linoleic acid system assay. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antioxidant activity; Ascorbic acid; Lycopene; Phenolic compounds.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000400001

Evaluation of the haematology and biochemistry of Clarias gariepinus as biomakers of environmental pollution in Tiga dam, Nigeria
Provedor de dados: 52
Autores: Abalaka,Samson Eneojo.
This study aimed to evaluate the haematological and biochemical changes in Clarias gariepinus as biomarkers of environmental pollution in Tiga dam, Nigeria (wild aquatic environment). Water and fishes were sampled twice, a week apart, from the controlled and the wild aquatic environment. There were no significant (p&amp;gt;0.05) differences between the temperature, pH and dissolved oxygen contents of both aquatic environments. Similarly, there were no significant (p&amp;gt;0.05) changes in the haematological parameters of the reared and wild the C. gariepinus except in their white blood cell counts, which were significantly (p&lt;0.05) higher in wild C. gariepinus. The activities of aspartate aminotransferase, alanine aminotransferase and alkaline...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Catfish; Serum enzymes; Serum metabolites; Blood values; Aquatic environment.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000300004

Nutrients behavior from the association pig slurry and chemical fertilizers on soybean crop
Provedor de dados: 52
Autores: Smanhotto,Adriana; Sampaio,Silvio César; Bosco,Tatiane Cristina Dal; Prior,Maritane; Soncela,Rosimaldo.
This study aimed at evaluating the effects of pig slurry application with mineral fertilizer on ions leaching from the soil in soybean crop. The experiment was carried out in 24 drainage lysimeters under protection. The soybean cultivar CD 202/COODETEC was sown in a soil that received 0, 100, 200 and 300 m³ha-1of pig slurry in one cycle, with or without mineral fertilizer. There were three samplings of soil throughout the trial to determine the pH, N, NO3-, K+, Ca2+, Mg2+, Na+, Cu+2, Zn+2, OM, CEC, EC and SAR six times during the crop cycle. The yield was determined in the plants. In soil, pig slurry increased the concentrations of pH, NO3-, K+, Zn+2, OM and CEC, while mineral fertilizer increased P and Zn+2concentrations. The limits observed for the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Organic fertilization; Soil pollution; Environment contamination; Soybean culture.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000500003

Intraerythrocytic organic phosphates and hemoglobins of skua - Catharacta maccormicki (Stercoraridae): at two different stages of the year in relation to Antartic migration
Provedor de dados: 52
Autores: Landini,Gustavo Fraga; Di Vito Neto,Alfredo; Schwantes,Arno Rudi; Schwantes,Maria Luiza Barcellos; Santos,Marcelo dos.
Catharacta maccormicki blood samples were collected in the winter (October) and in the summer (February) in order to study the intraerythrocytic organic phosphates, hemoglobin (Hb) electrophoretic patterns, oxygen blood equilibrium and stripped Hbs, as well as the effect of 2,3-biphosphoglycerate (BPG) and inositol hexaphosphate (IHP) on oxygen affinity. All the samples (five from the winter and five from the summer) showed the same electrophoretic pattern: one minor fast component and one major slow one. No differences in oxygen affinity and Bohr effect in the samples collected in the winter and in the summer were found. Oxygen affinity was higher in the stripped Hb than in the blood. BPG seemed to have no effect on the functional properties of skua Hb...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Birds; Blood; Electrophoresis; Cold; Affinity; Oxygen.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000400010

A new enzymatic process for the treatment of phenolic pollutants
Provedor de dados: 52
Autores: Palma,Mauri Sergio Alves; Horn,Harald; Zilli,Mario; Pigatto,Gisele; Converti,Attilio.
This work aimed to develop a new economic enzymatic process to treat the phenolic pollutants using pure tyrosinase in stirred vessel and adopting temperature (T), pH, rotational speed (N), initial phenol (C P,o) and enzyme (C T) concentrations as independent variables. Experimental data of the residual phenol concentration (C P) were used to calculate the oxidation efficiency (η), initial oxidation rate (-r o) and time required to reach the end of reaction (t) that were selected as the responses. Under the optimal conditions (T = 45°C, pH 6.6, N = 400 rpm, C P,o = 100 ppm and C T = 50 U/mL), η was 88.1%, -r o = 10.2 mg L-1 min-1, t = 40 min. These results suggested that tyrosinase-rich crude extracts from vegetable byproducts could be quite promising.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phenols; Tyrosinase; Wastes; Enzymatic treatment.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000400016

Lipid and protein oxidation in charqui meat and jerked beef
Provedor de dados: 52
Autores: Souza,Marta A. A.; Visentainer,Jesui V.; Carvalho,Rafael H.; Garcia,Fabianne; Ida,Elza I.; Shimokomaki,Massami.
In this study, the changes in the lipid (Lox) and protein oxidation (Pox) were measured quantitatively by TBARS and carbonyl methods, respectively, throughout the salting and drying steps of charqui meat (CH) and jerked beef (JB) preparation and their storage up to 60 days. The experiment was carried out on CH samples treated with brine (20.0%) and JB with same brine solution added with sodium nitrite (0.02%). After 60 days of storage, the carbonyl substances in CH were 2.77nmol mg-1 while in the JB samples, there was 61.0% oxidation inhibition. The TBARS determination revealed a Lox inhibition by approximately 5-fold in the latter samples. These results indicated that in the metmyoglobin molecule, the nitrite kept the Fe in the Fe2+ state in JB samples...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Protein oxidation; Charqui; Jerked beef.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000100014

Antimicrobial activity of Syagrus coronata (Martius) Beccari
Provedor de dados: 52
Autores: Hughes,Alice Ferreira da Silva; Lima,Fabíola Guedes de; Lucchese,Angélica Maria; Góes Neto,Aristóteles; Uetanabaro,Ana Paula Trovatti.
This work aimed to evaluate the antimicrobial activity of aqueous and methanol extracts of leaves, inflorescences, nut-shell, liquid and solid endosperm nuts of Syagrus coronata against pathogenic bacteria and yeast. Screening was initially performed using the agar dilution method. The extracts regarded as bioactive underwent liquid-liquid partition for determination of their minimum inhibitory concentration and minimum bactericide concentration (MIC and MBC) and those of their respective fractions against the microorganisms inhibited in preliminary tests. Antimicrobial activity was observed only in inflorescences. The corresponding aqueous extract was effective against B. cereus and the three strains of S. aureus, and the corresponding MIC and MCB values...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Syagrus coronata; Arecaceae; Antimicrobial activity.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000200012

Estimation of some heavy metals in polluted well water and mercury accumulation in broiler organs
Provedor de dados: 52
Autores: Hussein,Hussein Khamis; Abu-Zinadah,Osama Abdullah; EL-Rabey,Haddad Abdulsameih; Meerasahib,Mohammed Fareez.
The aim of this study was to investigate the relationship between the concentrations of heavy metals in well water and bioaccumulation of the most abundant metals in chicken tissues in some areas in the province of Mecca Almokaramah, Saudi Arabia. Among the heavy metals (Cd, Zn, Cr, Mn, Cu Hg, Pb and Ni) studied, mercury (Hg) revealed highest in concentration in well waters. The concentration of mercury in the ground water, beside in liver, kidney, muscle and blood samples of ten chickens from each of four poultry- production farms were estimated using atomic absorption spectrophotometer. The results showed that the kidney followed by liver had the highest bioaccumulation of mercury in all farm samples. The level of mercury in the ground water was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Environmental toxicology; Ground water; Heavy metals; Mercury; Bioaccumulation-chicken histopathology.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000500007

A cost effective fermentative production of glutathione by Saccharomyces cerevisiae with cane molasses and glycerol
Provedor de dados: 52
Autores: Anschau,Andréia; Santos,Lucielen Oliveira dos; Alegre,Ranulfo Monte.
This work aimed to evaluate the effect of sugar cane molasses and glycerol on glutathione (GSH) fermentation by Saccharomyces cerevisiae ATCC 7754 in flask culture using response surface methodology. Under optimized conditions (80 g/L of molasses and 60 g/L of glycerol), the highest GSH and biomass concentration achieved were 119.6 mg/L and 25.3 g/L, respectively. Further studies done in 5 L bioreactor resulted 241.3 mg/L GSH after 96 h in batch fermentation without amino acids addition and the concentration of biomass was 12.1 g/L. In batch fermentation with the addition of the three amino acids (4 mM cysteine, glycine and glutamic acid at 32 h), biomass reached to 25 g/L and GSH, 236.1 mg/L at 96 h of fermentation. The strategy of precursor amino acids...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glutathione; Fermentation; Fed Batch Culture; Amino Acids; Response Surface Methodology.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000500017

Influence of multiple bioprocess parameters on production of lipase from Pseudomonas sp. BWS-5
Provedor de dados: 52
Autores: Sooch,Balwinder Singh; Kauldhar,Baljinder Singh.
The aim of the present work was to study the influence of multiple bioprocess parameters for the maximum production of lipase from Pseudomonas sp. BWS-5. The culture reached the stationary phase of growth after 36h of incubation when the maximum lipase production was obtained at flask level. The different media components such as carbon sources, nitrogen sources, trace elements and process parameters such as the pH of the medium, temperature and time of incubation, agitation/stationary conditions, etc. were optimized at flask level and at bioreactor level. The maximum enzyme production of 298 IU/mL was obtained with the use of simple medium with pH 6.5 containing glucose (1 %, w/v), peptone (3 %, w/v) and KCl (0.05 %, w/v) after 30h of incubation at 37°C...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lipase; Pseudomonas; Medium Optimization.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000500002

The effect of melatonin and/or complex vitamin B1,B6,B12 in modulating epinephrine-induced stress in male rats
Provedor de dados: 52
Autores: EL-Toweissy,Mona Yossef; Mohamed,Nema Abdel-Hameed; Abdel-Wahab,Wessam Mohamed.
This study was undertaken to determine the modulating effects of intramuscular administration of melatonin (MT)(1mg/ kg) and/or Tri-B (B 1 , B 6 and B 12 ) (20mg/kg) on body weight and some biochemical changes in rats induced by Epinephrine (Epi) injection. The data showed that MT and/or Tri-B treatment effectively improved the changes in malondialdehyde, lipid profile, blood sugar level and insulin. MT and/or Tri-B administration following Epi improved partially the decrease in body weight and liver glycogen levels. Tri B injection following Epi partialy improved all the tested parameters except malondialdehyde and blood sugar level that completely improved in stressed rats. It was evident that a combination of MT and vitamin B complex had protective...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Stress; Epinephrine; Melatonin; Tri-B; Rats.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000300007

Cloning, expression, purification and assay of sorbitol dehydrogenase from "Feicheng" peach fruit (Prunus persica)
Provedor de dados: 52
Autores: Sun,Zhen; Ma,Chunmei; Zhou,Jie; Zhu,Shuhua.
A gene encoding NAD+-dependent sorbitol dehydrogenase (SDH) in peach fruit was cloned and expressed in Escherichia coli. Recombinant SDH protein with 6×His-tagged was localized exclusively in the cytoplasmic soluble fraction of E. coli when the strains were grown for 4-5 h at 37 ºC. Highly pure protein was isolated by Ni2+-resin chromatography with 150 mM imidazole in 50 mM Tris, pH 8.0, by elution. In order to ensure that the recombinant SDH could be used for further study, the fluorescence and ultraviolet spectrum of the recombinant SDH were detected. Recombinant SDH was confirmed to be capable of oxidizing sorbitol by enzymatic activity assay. The activity of the recombinant SDH was 2.73 U mg-1min-1, which was similar with that directly extracted from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sorbitol dehydrogenase; Recombinant SDH; Expression and purification; Ni-NTA; Enzyme assay; Peach fruit.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000400002

Pretreatment strategies for delignification of sugarcane bagasse: a review
Provedor de dados: 52
Autores: Karp,Susan Grace; Woiciechowski,Adenise Lorenci; Soccol,Vanete Thomaz; Soccol,Carlos Ricardo.
The valorization of agro-residues by biological routes is a key technology that contributes to the development of sustainable processes and the generation of value-added products. Sugarcane bagasse is an agro-residue generated by the sugar and alcohol industry in Brazil (186 million tons per year), composed essentially of cellulose (32-44%), hemicellulose (27-32%) and lignin (19-24%). The conversion of sugarcane bagasse into fermentable sugars requires essentially two steps: pretreatment and hydrolysis. The aim of the pretreatment is to separate the lignin and break the structure of lignocellulose, and it is one of the most critical steps in the process of converting biomass to fermentable sugars. The aim of this review is to describe different...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sugarcane Bagasse; Lignocellulose; Pretreatment; Delignification.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000400019

Occurrence of sulphate reducing bacteria (SRB) associated with biocorrosion on metallic surfaces in a hydroelectric power station in Ibirama (SC) - Brazil
Provedor de dados: 52
Autores: Marangoni,Paulo Roberto Dantas; Robl,Diogo; Berton,Marcos Antonio Coelho; Garcia,Carlos Mario; Bozza,Angela; Porsani,Mariana Vieira; Dalzoto,Patricia do Rocio; Vicente,Vânia Aparecida; Pimentel,Ida Chapaval.
The aim of this study was evaluate, two methods for the detection and identification of sulphate reducing bacteria (SRB): ML medium and PCR with specific primers for SRB groups. SRB were detected through the selective medium only on carbon steel, which showed corrosion. Employing specific PCR primer, SBR were detected from all the metallic components assayed, even those that did not present visible corrosion spots, such stainless steel and copper alloys. Despite the presence or absence of corrosion at the later stages effectively by using the selective medium,, the initial stages of the corrosion could only be detected by the amplification of total DNA with SRB specific primers. The early detection of SRB could be employed for preventing the damages on...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Metallic surface; Hydroelectric power station; Biofilm; Biocorrosion.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000500011

Characterization and shelf life of β-carotene loaded solid lipid microparticles produced with stearic acid and sunflower oil
Provedor de dados: 52
Autores: Gomes,Graziela Veiga de Lara; Borrin,Thais Ribeiro; Cardoso,Lisandro Pavie; Souto,Eliana; Pinho,Samantha Cristina de.
Solid lipid microparticles were tested as microencapsulation systems for protecting β-carotene from degradation. Blends of long-chain (C18) solid lipids (70% stearic acid) and sunflower oil (30%) were used to produce lipid microparticles encapsulating the carotenoid. Polysorbate 80 (4%) was employed to stabilize the stearic acid microparticles. The concentration of β-carotene was monitored using spectrophotometry, the particle size distribution was measured by laser diffraction, the crystal structure was determined by wide angle X-ray diffraction (WAXD), and the thermal behaviour was characterized by differential scanning calorimetry (DSC) over a period of seven months. All of the systems had an average particle size smaller than 5 µm. To avoid β-carotene...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Solid lipid microparticles; Β-carotene; Microencapsulation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000400017

Enhanced immune response of a bicistronic DNA vaccine expressing fusion antigen Hsp65-Esat-6 of Mycobacterium Tuberculosis with GM-CSF as a molecular adjuvant
Provedor de dados: 52
Autores: Dong,Yan; Gong,Jun-Yuan; Liu,Xin; Li,Jun-Wu.
This study aimed to construct a bicistronic DNA vaccine expressing fusion antigen Hsp65-Esat-6 of Mycobacterium tuberculosis with cytokine GM-CSF as a molecular adjuvant (pIRES-Hsp65-ESAT-6-GM-CSF, pIRHEG), and the immune response in mice. C57BL/6 mice were immunized with the recombinant plasmid to detect the titer of antibodies, lymphocyte proliferation, the ratio of CD4+, CD8+T cell and IFN ~ γï¼ŒIL-2 secretion. The titer of antibody, lymphocyte proliferation, the ratio of CD4+T and CD8+T cells and IFN ~ γ, IL-2 secretion of pIRHEG group was significant higher than other recombinant plasmid groups, which significant differed by statistical mean. The bicistronic DNA vaccine could induce an effective immune response in mice and could be used as vital...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hsp65; Esat6; GM-CSF.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000500006

Isolation and purification of bromelain from waste peel of pineapple for therapeutic application
Provedor de dados: 52
Autores: Bresolin,Iara Rocha Antunes Pereira; Bresolin,Igor Tadeu Lazzarotto; Silveira,Edgar; Tambourgi,Elias Basile; Mazzola,Priscila Gava.
The aim of this work was to isolate and purify bromelain extracted from the pineapple peel by ammonium sulfate precipitation (40-80%), followed by desalting and freeze-drying with a 75% activity recovery and 2.2 fold increased specific activity. Ion exchange chromatography on DEAE-Sepharose was able to separate the polysaccharides from the enzyme, which was recovered in the elution step, maintaining its enzymatic activity. The batch adsorption of bromelain was evaluated in terms of total protein and enzymatic activity using Langmuir and Langmuir-Freundlich models. Results showed that the process could be suitable for the recovery and purification of the enzyme, maintaining its specific activity.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bromelain; Pineapple peel; Downstream processing; Waste; Therapeutic applications; Enzymatic activity.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000600012

Isolation of bacteriocin - producing lactic acid bacteria from 'Ugba' and 'Okpiye', two locally fermented nigerian food condiments
Provedor de dados: 52
Autores: Nwuche,Charles Ogugua.
In this work, 100 samples each of 'ugba' and 'okpiye' were evaluated for the presence of bacteriocin producing lactic acid bacteria. Thirty strains showing antibacterial activity against at least one of the indicator organisms were selected from a total of 752 colonies isolated from the condiments. Out of the 30, only five strains retained activity after the pH of the broth supernatant was adjusted to 6.5. When evaluated by the agar-well diffusion assay, the spectra of inhibitory activity showed that Staphylococcus aureus was the most sensitive indicator organism tested, while Listeria monocytogenes was the most resistant. One strain (UG 2) was active against Escherichia coli. The assays using the cell-free supernatant of the cultures showed that the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 'Ugba'; 'Okpiye'; Lactic acid bacteria; Bacteriocins; Inhibitory activity; Condiments; Cell free supernatant.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000100013

Immune response after rabies oral immunization in mice
Provedor de dados: 52
Autores: Silva,Camila Sloboda Pacheco da; Krüger,Ernesto Renato; Agottani,Jorge Victor Bacila; Oliveira,Rubens Chaguri de; Pereira,Sandro; Penha,Tânia Regina; Ollhoff,Rüdiger Daniel.
The objective of this study was to formulate an anti-rabies oral vaccine from the cell culture vaccine PV TECPAR to elicit the production of antibodies against the rabies in mice. A vaccine was developed using 10(7.5) DL50/0.03 ml viral antigens homogenised in lanovaseline to facilitate oral administration. Mice were vaccinated two times for seroconversion. Sera of the vaccinated mice showed a higher level of antibody production than the control group. These results could be used to direct the development of an anti-rabies oral vaccine.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rabies; Oral vaccine; Mice; ELISA.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000600006

The bioindicative potential evaluation of Tabebuia alba (Cham.) Sandwith, Bignoniaceae, in urban atmospheric pollution
Provedor de dados: 52
Autores: Carvalheiro,César Vinícius; Rocha,Ledyane Dalgallo; Maranho,Leila Teresinha.
This study aimed to evaluate the existence of leaf anatomic characteristics in Tabebuia alba changed by air pollutants, which could be used as tool for a bioindication program. The quantification of mutagenic events on pollen grains also were measured. For this, median leaves and pre-anthesis flowers were collected from the adult plants from three places of Curitiba and one place in Araucaria, all nearby to the air monitoring stations. The comparison of the four study sites showed a reduction in leaf area, an increasing of stomatal density, subepidermic layer, epidermis in both faces and the amount of micronucleus. Also, there was reduction of chlorophyllian parenchymas at the site where there was the higher average for the ozone level. It was concluded...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Air quality; Tropospheric pollution; Bioindication; Vegetal morphoanatomy; Morphometry; Mutagenesis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000400020

Real time PCR and importance of housekeepings genes for normalization and quantification of mRNA expression in different tissues
Provedor de dados: 52
Autores: Rebouças,Emanuela de Lima; Costa,José Jackson do Nascimento; Passos,Maria Juliane; Passos,José Renato de Sousa; Hurk,Robert van den; Silva,José Roberto Viana.
The aim of this review was to evaluate the importance of the real-time PCR (qRT-PCR) as a technique for mRNA expression analysis in different tissues. Real-time PCR is widely used for quantification of mRNA levels and is a fundamental tool for basic research, molecular medicine and biotechnology.Genes of references are expressed in a wide variety of tissues and cells with minimal variations in their expression levels, and thus are used to normalize data of mRNA quantification. Software programs, such as geNorm, BestKeeper and NormFinder, have been developed to perform the normalization of data, which help to choose the most stable reference gene. Several genes, such as GAPDH, β-actin, β-tubulin, PGK, UBQ, RPL-19 and 18S rRNA have been suggested as...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: PCR; Normalization; Reference genes; Gene expression; MRNA.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000100019

Thermodynamic modeling of ternary liquid-liquid systems with forming immiscibility islands
Provedor de dados: 52
Autores: Zuber,Andre; Raimundo,Rodrigo; Mafra,Marcos Rogério; Cardozo Filho,Lúcio; Oliveira,José Vladimir; Corazza,Marcos Lúcio.
The aim of this work was to study the application of a stochastic algorithm to correlate the experimental data of island-type systems in ternary systems. Thermodynamic NRTL and UNIQUAC models were used to evaluate the activity coefficients. Results regarding the application of the stochastic algorithm were in good agreement with those presented in the current literature. However, generalization of the method proposed in the present work remained an intriguing and complex task so as to reach broad conclusions.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: LLE; Island-type; Stochastic algorithm; NRTL; UNIQUAC.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000600020

Mechanism of action of probiotics
Provedor de dados: 52
Autores: Hemaiswarya,S; Raja,R.; Ravikumar,R.; Carvalho,Isabel S.
The modern diet doesn't provide the required amount of beneficial bacteria. Maintenance of a proper microbial ecology in the host is the main criteria to be met for a healthy growth. Probiotics are one such alternative that are supplemented to the host where by and large species of Lactobacillus, Bifidobacterium and Saccharomyces are considered as main probiotics. The field of probiotics has made stupendous strides though there is no major break through in the identification of their mechanism of action. They exert their activity primarily by strengthening the intestinal barrier and immunomodulation. The main objective of the study was to provide a deep insight into the effect of probiotics against the diseases, their applications and proposed mechanism of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anti-allergic; Gastrointestinal problems; Immunomodulation; Infectious diseases; Probiotics.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000100015

In silico analysis of compounds from Stemona tuberosa as an inhibitor for N1 neuraminidase of H5N1 avian virus
Provedor de dados: 52
Autores: Manohar,Abhilash.
The worldwide spread of H5N1 avian influenza has raised concerns that this virus might acquire the ability to pass readily among humans and cause a pandemic.Two anti-influenza drugs currently being used to treat the infected patients are oseltamivir (Tamiflu) and zanamivir (Relenza), both of which target the neuraminidase enzyme of the virus. Reports of the emergence of drug resistance has made the development of new anti-influenza molecules a priority. Various compounds present in Stemona tuberosa a plant belonging to Stemonaceae family was tested for activity against H5N1 neuraminidase. Eight one molecules including stilbenoids, bibenzyls and various others were selected as probable compounds for lead molecules. These lead molecules were tested for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: H5N1 Avian virus; Neuraminidase inhibiotors; Stemona tuberosa; Docking analysis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000100003

Plant regeneration and Agrobacterium-mediated transformation of Achyranthes bidentata using cotton EREBP gene
Provedor de dados: 52
Autores: Duan,Hong Ying; Ding,Xiao Sheng; Song,Jian Ying; He,Yun Long; Zhou,Yan Qing.
The aim of this work was to study the plant regeneration and Agrobacterium-mediated transformation of Achyranthes bidentata using cotton EREBP gene. Results showed that the callus induction rate of stems from A. bidentata was the highest (100%) and bud was in approximately 70% of calli from stems. However bud differentiation rate of the callus from leaves and petioles was very low. Compared with ceftriaxone, 200mg/L cefotaxime could completely control Agrobacterium tumefaciens and had relatively less toxic action on the stems of A. bidentata. In addition, the induction rate of callus resistant to hygromycin was the highest when infected for 3 min and co-cultivated for 3 d. Six positive transgenic plants transformed with pCAMBIA1304-GhEREB2 expression...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Achyranthes bidentata; EREBP gene; Agrobacterium tumefaciens; Genetic transformation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000300001

Comparison of High Performance Liquid Chromatography with Fluorescence Detector and with Tandem Mass Spectrometry methods for detection and quantification of Ochratoxin A in green and roasted coffee beans
Provedor de dados: 52
Autores: Bandeira,Raquel Duarte da Costa Cunha; Uekane,Thais Matsue; Cunha,Carolina Passos da; Rodrigues,Janaina Marques; la Cruz,Marcus Henrique Campino de; Godoy,Ronoel Luiz de Oliveira; Fioravante,Andreia de Lima.
Two analytical methods for the determination and confirmation of ochratoxin A (OTA) in green and roasted coffee samples were compared. Sample extraction and clean-up were based on liquid-liquid phase extraction and immunoaffinity column. The detection of OTA was carried out with the high performance liquid chromatography (HPLC) combined either with fluorescence detection (FLD), or positive electrospray ionization (ESI+) coupled with tandem mass spectrometry (MS-MS). The results obtained with the LC-ESI-MS/MS were specific and more sensitive, with the advantages in terms of unambiguous analyte identification, when compared with the HPLC-FLD.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: HPLC-FLD; LC-MS/MS; Green Coffee and Roasted Coffee.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000600004

Quality Index Method (QIM) to assess the freshness and shelf life of fish
Provedor de dados: 52
Autores: Bernardi,Daniella Cristina; Mársico,Eliane Teixeira; Freitas,Mônica Queiroz de.
The aim of this work was to develop a sensory method as the objective measure of quality of the fishes at all the key stages of fishery chain, from catch to consumer. The Quality Index Method (QIM) is based on a structured scaling for quality measurements and provides accurate and precise information concerning the freshness and a prediction of the remaining shelf-life for specie-specific fishes. The method is discussed and some future outlooks and need are pointed in order to stimulate the implementation of QIM in the relevant parts of the fishery chain giving unique information of the quality.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sensory analysis; Fish quality; QIM; Shelf life.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000400009

Characterization of an acidification and equalization tank (AET) operating as a primary treatment of swine liquid effluent
Provedor de dados: 52
Autores: Motteran,Fabrício; Pereira,Erlon Lopes; Campos,Claudio Milton Montenegro.
This work evaluated the potential of the acidification equalization tank (AET) used as a primary treatment unit, treating the hog farming wastewater. The treatment system consisted of a degritter with a triangular-notch weir, for measuring the flow, a static sieve, and an acidification and equalization tank (AET), an anaerobic baffled reactor (ABR), an upflow anaerobic sludge blanket (UASB) reactor, a settling tank, a greenhouse for fertirrigation and two infiltration ponds. The AET had a net capacity of 8,000 liters, internally covered with asphalt blanket, worked based on surface loading rates application. The unit operated continuously, with its flow varying from 0.1 to 10 L s-1. To determine the efficiency, the following parameters were measured: pH;...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Swine effluent; Organic matter removal; Primary treatment; Pollution control; Inexpensive technologies.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000300017

First reported case of pneumonia caused by Cedecea lapagei in America
Provedor de dados: 55
Autores: Lopez,Luis Antonio Sanchez; Ibarra,Bárbara Saenz; Garza,Jess Alberto Cárdenas de la; Rada,Felipe de Jesus Martin Perez; Nuñez,Ana Isabel Sepúlveda; López,María Guadalupe Rodríguez.
Cedecea represents a genus in the Enterobacteriaceae family that has been rarely associated with human infection. The clinical relevance of Cedecea lapagei has yet to be elucidated. This is the first reported case of pneumonia due to C. lapagei in a patient with acute promyelocytic leukemia.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Pneumonia; Cedecea lapagei; Acute promyelocytic leukemia.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000500023

Estimating risk factors for acinetobacter bacteremia in pediatric settings
Provedor de dados: 55
Autores: Ekinci,Faruk; Bayram,Nuri; Devrim,Ilker; Apa,Hurşit; Gülfidan,Gamze; Günay,Ilker.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000400023

Expression of the marA, soxS, acrB and ramA genes related to the AcrAB/TolC efflux pump in Salmonella entérica strains with and without quinolone resistance-determining regions gyrA gene mutations
Provedor de dados: 55
Autores: Ferrari,Rafaela Gomes; Galiana,Antonio; Cremades,Rosa; Rodríguez,Juan Carlos; Magnani,Marciane; Tognim,Maria Cristina Bronharo; Oliveira,Tereza C.R.M.; Royo,Gloria.
Several studies have been conducted in recent years to elucidate the structure, function and significance of AcrB, MarA, SoxS and RamA in Salmonella enterica. In this study, the relative quantification of acrB, soxS, marA and ramA genes expression was evaluated in 14 strains of S. enterica, with or without accompanying mutations in the quinolone resistance-determining regions of the gyrA gene, that were exposed to ciprofloxacin during the exponential growth phase. The presence of ciprofloxacin during the log phase of bacterial growth activated the genes marA, soxS, ramA and acrB in all S. enterica strains analyzed in this study. The highest expression levels for acrB were observed in strains with gyrA mutation, and marA showed the highest expression in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Salmonella sp.; Fluoroquinolone; Efflux pump; Antibiotic resistance.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000200002

Evaluation of reactive Epstein-Barr virus (EBV) in Iranian patient with different subtypes of multiple sclerosis (MS)
Provedor de dados: 55
Autores: Ramroodi,Nourollah; Niazi,Abbas Ali; Sanadgol,Nima; Ganjali,Zohre; Sarabandi,Vida.
OBJECTIVES: Epstein-Barr virus has been recently associated with the onset of multiple sclerosis, yet understanding how it elicits autoimmunity remains elusive. We investigated the relation between Epstein-Barr virus reactivation and disease development in different subtypes of multiple sclerosis. METHODS: In the present research, we have determined the Epstein-Barr virus-DNA load by quantitative real-time polymerase chain reaction and Epstein-Barr virus antibody levels by EIA technique in both multiple sclerosis patients (n = 78) and healthy controls (n = 123). RESULTS: Our results demonstrated increased titer of both anti-Epstein-Barr virus-IgG and IgM antibodies in patients (91.02% vs 82.11% in controls, p &lt; 0.001 and 14.1% vs 4.06% in controls, p...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: EBV; MS; Reactivation; QPCR; ELISA.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000200007

Epidemiological evolution of vertical HIV transmission in Rondônia, Brazil
Provedor de dados: 55
Autores: Vieira,Gabriel de Deus; Alves,Thaianne da Cunha; Sousa,Camila Maciel de.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000500017

National estimates of severe sepsis (our experience in Novi Sad, Serbia)
Provedor de dados: 55
Autores: Gvozdenović,Ljiljana; Knežević,Violeta; Knežević,Aleksandar; Gvozdenović,Nemanja; Gojković,Zoran.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000300014

Frequency of microorganisms isolated in patients with bacteremia in intensive care units in Colombia and their resistance profiles
Provedor de dados: 55
Autores: Cortes,Jorge Alberto; Leal,Aura Lucía; Montañez,Anita María; Buitrago,Giancarlo; Castillo,Juan Sebastián; Guzman,Lucy.
OBJECTIVE: The aim of this study was to describe the most frequently found bacterial microorganisms in bloodstream isolates taken from patients in intensive care units in Colombia and their resistance profiles. METHODS: This was a multicentre descriptive observational study that was carried out between January 2001 and June 2008 with laboratory data from 33 participating hospitals in a surveillance network. RESULTS: The most frequently found microorganisms were coagulase-negative Staphylococci 39.6%, Staphylococcus aureus 12.3%, Klebsiella pneumoniae 8.2%, Escherichia coli 5.7%, Acinetobacter baumannii, 4.0% and Pseudomonas aeruginosa 3.8%. Coagulase-negative Staphylococci registered greater than 70% oxacillin resistance rate. S. aureus presented a change...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacteremia; Intensive care unit; Drug resistance; Anti-bacterial agents; Colombia/epidemiology; Epidemiologic surveillance.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000300007

Prediction of bacterial meningitis based on cerebrospinal fluid pleocytosis in children
Provedor de dados: 55
Autores: Águeda,Sofia; Campos,Teresa; Maia,Ana.
Children with cerebrospinal fluid pleocytosis are frequently treated with parenteral antibiotics, but only a few have bacterial meningitis. Although some clinical prediction rules, such as bacterial meningitis score, are of well-known value, the cerebrospinal fluid white blood cells count can be the initial available information. Our aim was to establish a cutoff point of cerebrospinal fluid white blood cell count that could distinguish bacterial from viral and aseptic meningitis. A retrospective study of children aged 29 days to 17 years who were admitted between January 1st and December 31th, 2009, with cerebrospinal fluid pleocytosis (white blood cell &amp;gt; 7 µL-1) was conducted. The cases of traumatic lumbar puncture and of antibiotic treatment...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pleocytosis; Bacterial meningitis; Cutoff point.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000400003

Positron emission tomography/computed tomography in cases with tuberculosis mimicking lung cancer
Provedor de dados: 55
Autores: Boyaci,Hasim; Basyigit,Ilknur; Baris,Serap Argun.
Tipo: Info:eu-repo/semantics/report
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000200025

Accurate diagnosis and treatment of Vibrio vulnificus infection: a retrospective study of 12 cases
Provedor de dados: 55
Autores: Matsuoka,Yoshinori; Nakayama,Yukishi; Yamada,Tomoko; Nakagawachi,Akira; Matsumoto,Kouichi; Nakamura,Kimihide; Sugiyama,Kyousuke; Tanigawa,Yoshinori; Kakiuchi,Yoshinobu; Sakaguchi,Yoshiro.
BACKGROUND AND AIMS: Vibrio vulnificus causes an infectious disease that has extremely poor convalescence and leads to necrotic fasciitis. In this study, we sought to define the characteristic epidemiology of V. vulnificus infection and clarify its diagnosis at the global level. METHODS: Over a period of 10 years, we investigated the appearance of symptoms, underlying conditions, treatment, and mortality in 12 patients (eight men, four women; &gt;50 years old; average age, 66 years,) infected with V. vulnificus. RESULTS: The development of symptoms occurred primarily between June and September, a period during which seawater temperature rises and the prevalence of V. vulnificus increases. All patients had underlying diseases, and seven patients reported a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vibrio vulnificus; Cellulitis/phlegmon; Necrotic fasciitis; Amputation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000100002

Psychopathology and psychosocial adjustment in patients with HIV-associated lipodystrophy
Provedor de dados: 55
Autores: Barata,Anna; Malouf,Jorge; Gutierrez,Mar; Mateo,Gracia María; Sambeat,Maria Antònia; Gich,Ignasi; Cadafalch,Josep; Wulff,Juan; Domingo,Pere.
OBJECTIVE: To study whether patients with HIV-1 associated lipodystrophy (LD) on highly active antiretroviral treatment (HAART) have more psychopathology and worse psychosocial adjustment than a similar group without this syndrome. METHODS: In a cross-sectional, observational study we compared 47 HIV-1 infected patients with LD (LD group) with 39 HIV-1 infected patients without LD (non-LD group). All participants were on HAART. The Beck Depression Inventory (BDI), the State and Trait Anxiety Inventory (STAI) and the Goldberg Health Questionnaire (GHQ-60) were administered. Levels of familial, work and social adjustment and adjustment to stressful events were evaluated in a semi-structured interview. Clinical information was extracted from the clinical...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: HIV; Lypodystrophy; Psychopathology; Psychosocial.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000400010

Nosocomial infections caused by Elizabethkingia meningoseptica: an emergent pathogen
Provedor de dados: 55
Autores: Pereira,Graziella H.; Garcia,Doroti de Oliveira; Abboud,Cely Saad; Barbosa,Vera Lucia de Barros; Silva,Paulo Sérgio Lucas da.
We hereby describe the clinical and epidemiological features and, outcomes of nine patients with Elizabethkingia meningoseptica infections in two hospitals over a 2-year period. All infections caused by this pathogen were nosocomial, or healthcare associated infections, in hemodialysis settings whereas none was correlated with hospital outbreaks.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Elizabethkingia meningoseptica; Nosocomial infections; Bloodstream infections.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000500015

Genetic polymorphism and immune response to tuberculosis in indigenous populations: a brief review
Provedor de dados: 55
Autores: Longhi,Renata Maronna Praça; Zembrzuski,Verônica Marques; Basta,Paulo Cesar; Croda,Julio.
We systematically reviewed studies of the immune response to tuberculosis and the genetic polymorphisms associated with Th1-or Th2-mediated cytokine expression in indigenous populations. A bibliographic search was performed on the Medline and ISI databases and included studies published between January 1980 and October 2011. The search terms were tuberculosis, American Indians, Amerindian, indigenous, Indians, native people, aboriginal, immun*, host immune, immune response, cytokine*, polymorphism*, and gene. Regardless of their design, studies that evaluated immunoglobulin, cytokine levels and genetic polymorphisms that altered cytokine expression were included. Thirteen studies met the inclusion criteria. The majority of studies were performed in Latin...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tuberculosis; Immune response; Indigenous populations; Polymorphism.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000300009

Hepatitis C virus core antigen assay: can we think beyond convention in resource limited settings?
Provedor de dados: 55
Autores: Chakravarti,Anita; Chauhan,Mayank S.; Dogra,Gaurav; Banerjee,Sayantan.
ABSTRACT Hepatitis C virus infects over 15 million patients from India and 2.86 million from Brazil. Detection of anti-hepatitis C virus antibodies has limited sensitivity during acute phase: the pre-seroconversion window period. Hepatitis C virus-RNA detection techniques are used to overcome this shortfall, but are costly and unavailable widely in developing countries. Estimation of hepatitis C virus core-antigen, a protein with highly conserved sequence, by enzyme-immunoassays is an economic and simpler alternative to RNA detection. This study was conducted in Delhi, involving 300 acute and chronic liver disease patients, tested for anti-hepatitis C virus 3rd-generation ELISA, hepatitis C virus core-antigen-ELISA and hepatitis C virus-RNA reverse...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Hepatitis C; Diagnosis; Core antigen; HCVcAg.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000300010

Corrigendum in "Virus C genotype predisposes to primary hypothyroidism during interferon-α treatment for chronic hepatitis C"
Provedor de dados: 55
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000100027

Characterization of the high-risk human papillomavirus infection in Jining, China
Provedor de dados: 55
Autores: Jia,Yinfeng; Guo,Huan; Liu,Feifei; Zhou,Guangqi; Dong,Haixin; Bi,Ling; Jia,Jialin; Sun,Hui.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000200029

Evaluation of an enzyme-linked immunospot assay for the immunodiagnosis of atypical spinal tuberculosis (atypical clinical presentation/atypical radiographic presentation) in China
Provedor de dados: 55
Autores: Yuan,Kai; Zhong,Zhao-ming; Zhang,Qiang; Xu,Shu-chai; Chen,Jian-ting.
BACKGROUND: Atypical spinal tuberculosis (TB) usually presents in a slowly indolent manner with nonspecific clinical presentations making the diagnosis a great challenge for physicians. New technologies for the detection of atypical spinal TB are urgently needed. The aim of this study was to assess the diagnostic value of an enzyme-linked immunospot (ELISPOT) assay in clinically suspected cases of atypical spinal TB in China. METHODS: From March 2011 to September 2012, a total of 65 patients with suspected atypical spinal TB were enrolled. In addition to conventional tests for TB, we used ELISPOT assays to measure the IFN-I response to ESAT-γ and CFP-10 in T-cells in samples of peripheral blood mononuclear cells. Patients with suspected atypical spinal TB...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atypical spinal tuberculosis; Enzyme-linked immunospot assay; T-SPOT.TB kit; Diagnosis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000500004

A literature review on cardiovascular risk in human immunodeficiency virus-infected patients: implications for clinical management
Provedor de dados: 55
Autores: Gomes Neto,Mansueto; Zwirtes,Ricardo; Brites,Carlos.
INTRODUCTION: In recent years, there has been growing concern about an increasing rate of cardiovascular diseases in human immunodeficiency virus-infected patients, which could be associated with side effects of highly active antiretroviral therapy. It is likely that the metabolic disorders related to anti-human immunodeficiency virus treatment will eventually translate into a increased cardiovascular risk in patients submitted to such regimens. OBJECTIVE: To evaluate if human immunodeficiency virus-infected patients receiving highly active antiretroviral therapy are at higher risk of cardiovascular diseases than human immunodeficiency virus infected patients not receiving highly active antiretroviral therapy, or the general population. RESEARCH DESIGN AND...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: AIDS; Therapeutics; Highly active antiretroviral therapy; Cardiovascular diseases.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000600011

Congenitally transmitted visceral leishmaniasis: report of two brazilian human cases
Provedor de dados: 55
Autores: Mescouto-Borges,Myrlena Regina Machado; Maués,Érika; Costa,Dorcas Lamounier; Pranchevicius,Maria Cristina da Silva; Romero,Gustavo Adolfo Sierra.
Visceral leishmaniasis is a relevant public health problem worldwide. Most of the reported cases in Latin America are from Brazil. Herein we report two human cases of congenitally transmitted visceral leishmaniasis in two patients who developed symptoms during pregnancy. The diagnosis was made by visual examination of Leishmania parasites in bone marrow aspirates of the mothers and by detecting parasite kDNA in bone marrow samples of the newborn children using polymerase chain reaction.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Congenital transmission; Visceral leishmaniasis; Leishmania infantum; Pregnancy.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000200024

Prevalence and risk factors of osteopenia/osteoporosis in Turkish HIV/AIDS patients
Provedor de dados: 55
Autores: Aydın,Ozlem Altuntas; Karaosmanoglu,Hayat Kumbasar; Karahasanoglu,Rıdvan; Tahmaz,Meryem; Nazlıcan,Ozcan.
BACKGROUND: Recent studies showed a high frequency of low bone mineral density (BMD) in HIV-infected patients and no reports have been issued in Turkey. Our aim was to evaluate BMD and risk factors for osteopenia/osteoporosis in HIV-infected patients that attended an outpatient clinic in Istanbul, Turkey. METHOD: In order to determine the prevalence of BMD, 126 HIV-infected patients had been studied with dual energy X-ray absorptiometry (DEXA). The association between BMD and age, gender, body mass index (BMI), habits, 25(OH)vitamin D, HIV RNA, CD4 lymphocyte nadir, using and duration of highly active antiretroviral treatment (HAART) were investigated by using multivariate analysis. RESULTS: Median age was 40.1 years (range, 20-70); 84% were male; 35.7%...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Osteopenia/osteoporosis; HIV/AIDS; Prevalence Risk factors.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000600014

Sequence analysis of genes associated with resistance to chloroquine and sulphadoxine pyrimethamine in P. falciparum and P. vivax isolates from the Bannu district of Pakistan
Provedor de dados: 55
Autores: Khatoon,Lubna; Baliraine,Frederick N.; Malik,Salman A.; Yan,Guiyun.
Plasmodium vivax and Plasmodium falciparum are becoming resistant to drugs including antifolates, sulphonamides and chloroquine. This study was focused at sequence analysis of resistant genes of these parasites against sulphadoxine-pyrimethamine and chloroquine, from Bannu, Pakistan. Known mutations were detected at codons 57, 58 and 117 of pvdhfr gene of P. vivax, while none of the isolates had any pvdhps mutation. Similarly P. falciparum isolates exhibited double 59R + 108N mutations in pfdhfr, and single 437G in pfdhps thus demonstrating the existance of triple mutant 59R + 108N + 437G haplotype in this region. The key chloroquine resistance mutation, 76T in pfcrt was observed in 100% of the P. falciparum isolates, with haplotype SVMNT which is also...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Plasmodium vivax; Plasmodium falciparum; Sequence analysis; Pakistan.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000500013

Lymphocytic myocarditis at autopsy in patients with dengue fever
Provedor de dados: 55
Autores: Torres,Alba Fabiola; Braga,Deborah Nunes; Muniz,Felipe; Mendonça,Cindy; Oliveira,Denise Nunes; Souza,Emilia Tome de; Burke,Allen; Tavora,Fabio.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000500020

Identifying risk factors of immune reconstitution inflammatory syndrome in AIDS patients receiving highly active anti-retroviral therapy
Provedor de dados: 55
Autores: He,Bo; Zheng,Yuhuang; Liu,Meng; Zhou,Guoqiang; Chen,Xia; Mamadou,Diallo; He,Yan; Zhou,Huaying; Chen,Zi.
Immune reconstitution inflammation syndrome typically occurs within days after patients undergo highly active anti-retroviral therapy and is a big hurdle for effective treatment of AIDS patients. In this study, we monitored immune reconstitution inflammation syndrome occurrence in 238 AIDS patients treated with highly active anti-retroviral therapy. Among them, immune reconstitution inflammation syndrome occurred in 47 cases (19.7%). Immune reconstitution inflammation syndrome patients had significantly higher rate of opportunistic infection (p &lt; 0.001) and persistently lower CD4+ cell count (p &lt; 0.001) compared to the non-immune reconstitution inflammation syndrome patients. In contrast, no significant differences in HIV RNA loads were observed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: IRIS; AIDS; HIV; HAART.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000200009

Early conversion of tuberculin skin test in medical students who begin hospital practices
Provedor de dados: 55
Autores: Soto,Alonso; Huablocho,Pahola; Ulloque,Johan.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000300015

Challenges in the development of drugs for the treatment of tuberculosis
Provedor de dados: 55
Autores: Shehzad,Adeeb; Rehman,Gauhar; Ul-Islam,Mazhar; Khattak,Waleed Ahmad; Lee,Young Sup.
Tuberculosis infection is a serious human health threat and the early 21st century has seen a remarkable increase in global tuberculosis activity. The pathogen responsible for tuberculosis is Mycobacterium tuberculosis, which adopts diverse strategies in order to survive in a variety of host lesions. These survival mechanisms make the pathogen resistant to currently available drugs, a major contributing factor in the failure to control the spread of tuberculosis. Multiple drugs are available for clinical use and several potential compounds are being screened, synthesized, or evaluated in preclinical or clinical studies. Lasting and effective achievements in the development of anti-tuberculosis drugs will depend largely on the proper understanding of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antibiotics; Drug resistance; Tuberculosis; Pathogen.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000100012

Body composition and lipodystrophy in prepubertal HIV-infected children
Provedor de dados: 55
Autores: Palchetti,Cecilia Zanin; Patin,Rose Vega; Gouvêa,Aída de Fátima Thomé Barbosa; Szejnfeld,Vera Lúcia; Succi,Regina Célia de Menezes; Oliveira,Fernanda Luisa Ceragioli.
OBJECTIVE: To identify lipodystrophy in prepubertal HIV-infected children using anthropometric parameters and body composition assessment. METHODS: Cross-sectional study including 40 prepubertal HIV-infected children of both genders seen at the Care Center of the Division of Pediatric Infectious Diseases - Universidade Federal de São Paulo, São Paulo city, Brazil, was carried out from August to December 2008. Age, clinical and immunological status, prophylaxis, transmission and highly active antiretroviral therapy were recorded. Body mass index z-score and height-for-age z-score were calculated to characterize the nutritional status. Circumferences were measured with flexible tape and skinfolds were assessed by an adipometry. Fat mass and lean mass were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: HIV; Child; Lipodystrophy; Body composition; Anthropometry.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000100001

Modulation of cerebral malaria by curcumin as an adjunctive therapy
Provedor de dados: 55
Autores: Jain,Kunal; Sood,Sumeet; Gowthamarajan,K.
Cerebral malaria is the most severe and rapidly fatal neurological complication of Plasmodium falciparum infection and responsible for more than two million deaths annually. The current therapy is inadequate in terms of reducing mortality or post-treatment symptoms such as neurological and cognitive deficits. The pathophysiology of cerebral malaria is quite complex and offers a variety of targets which remain to be exploited for better therapeutic outcome. The present review discusses on the pathophysiology of cerebral malaria with particular emphasis on scope and promises of curcumin as an adjunctive therapy to improve survival and overcome neurological deficits.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cerebral malaria; Curcumin; Adjunctive; Cognitive deficit.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000500011

Spectrum and potency of ceftaroline against leading pathogens causing community-acquired respiratory tract and skin and soft tissue infections in Latin America, 2010
Provedor de dados: 55
Autores: Flamm,Robert K.; Sader,Helio S.; Jones,Ronald N.
Ceftaroline, the active metabolite of the prodrug ceftaroline fosamil, is a cephalosporin with in vitro bactericidal activity against Gram-positive organisms, including methicillinsusceptible and -resistant Staphylococcus aureus, β-haemolytic and viridans group streptococci, and Streptococcus pneumoniae, as well as common Gram-negative organisms. In this study a total of 986 isolates collected in 2010 from patients in 15 medical centers in five Latin American countries from the Assessing Worldwide Antimicrobial Resistance Evaluation Program were identified as community-acquired respiratory tract or skin and soft tissue infection pathogens. Ceftaroline was the most potent agent tested against S. pneumoniae with a MIC90 value (0.12 µg/mL) that was eight-fold...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ceftaroline; AWARE; S. aureus; S. pneumoniae.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000500009

Characteristics of co-infections by HCV and HBV among Brazilian patients infected by HIV-1 and/or HTLV-1
Provedor de dados: 55
Autores: Moreira,Marcia; Ramos,André; Netto,Eduardo M.; Brites,Carlos.
BACKGROUND: The human retroviruses HIV-1 and HTLV-1 share the routes of infection with hepatitis viruses B and C. Co-infection by these agents are a common event, but we have scarce knowledge on co-infection by two or more of these agents. OBJECTIVE: To evaluate the characteristics and risk factors for co-infections by HBV and HCV in patients infected by HIV-1 or/and HTLV-1, in Salvador, Brazil. METHODS: In a case-control study we evaluated patients followed in the AIDS and HTLV clinics of Federal University of Bahia Hospital. Clinical and epidemiological characteristics were reviewed, and patients were tested for the presence of serological markers of HBV and HCV infections. HCV-infected patients were tested by PCR to evaluate the presence of viremia....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: HIV-1; HTLV-1; Coinfection; HCV; HBV; Brazil.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000600007

Polyomavirus infection in renal allograft
Provedor de dados: 55
Autores: Araújo,Stanley de Almeida; Honorato-Sampaio,Kinulpe; Fernandes Júnior,Ladislau José.
Tipo: Info:eu-repo/semantics/article
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000600016

Lemierre syndrome from a neck abscess due to methicillin-resistant Staphylococcus aureus
Provedor de dados: 55
Autores: Abhishek,Agarwal; Sandeep,Singla; Tarun,Pandey.
Lemierre syndrome is characterized by acute septic thrombophlebitis of the internal jugular vein (IJV) that develops after an oropharyngeal infection, and can be complicated by septic emboli to lungs and other organs. The most frequent causative agent is Fusobacterium necrophorum, an anaerobic bacillus found in normal oropharyngeal flora. Staphylococcus aureus has emerged as a cause of Lemierre syndrome in the last decade. We report a case of a 24-year-old man who developed septic IJV thrombosis and necrotizing pneumonia due to S. aureus from an infected hematoma in the right sternocleidomastoid muscle. Antibiotics are the mainstay of therapy with few cases needing anticoagulation. A good outcome is dependent upon an awareness of the condition, a high...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Internal jugular vein thrombosis; Staphylococcus aureus; Pulmonary emboli; Septic emboli.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000400024

Pertussis: a re-emerging or under diagnosed infectious disease?
Provedor de dados: 55
Autores: Cantarelli,Vlademir V.; Hoffmann,Elias R.; Fitarelli,Douglas B.; Comerlato,Liriane; Baungarten,Cláudio C.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000300016

Research on tuberculosis: 75 years of IBIT contributions
Provedor de dados: 55
Autores: Leite,Geraldo.
In 1937, the foundation year of the Brazilian Institute for Tuberculosis Research, three questions persisted in the researchers' mind: "What is the real value of BCG? How to solve the problem of the chest register of large communities? When will we have a specific drug for the treatment of tuberculosis?"; Along with this line of thought, the author presents a list of the Institute's main contributions, by pointing out the following topics: different diagnoses between pulmonary tuberculosis and pulmonary schistosomiasis; innocuity of iodine salts in pulmonary tuberculosis; relative value of Weltmann and Takata-Ara's reactions, and of blood and lipase rates in bacillosis; the value of the bacteriologic diagnosis (method of precipitation, standardization of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Research; Tuberculosis; Bahia; Brazil.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000200014

AIDS-related cerebral toxoplasmosis in São Paulo State, Brazil: marked improvements in the highly active antiretroviral therapy-era but the challenges continue
Provedor de dados: 55
Autores: Vidal,Jose E.; Oliveira,Augusto C. Penalva de.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000300013

Epidemiological and molecular characterization of community and hospital acquired Staphylococcus aureus strains prevailing in Shenyang, Northeastern China
Provedor de dados: 55
Autores: Sun,Dan Dan; Ma,Xiao Xue; Hu,Jian; Tian,Yuan; Pang,Long; Shang,Hong; Cui,Long Zhu.
In order to obtain adequate information for the treatment of methicillin resistant Staphylococcus aureus (MRSA) infections, it is crucial to identify trends in epidemiological and antimicrobial resistance patterns of local S. aureus strains. Community and hospital acquired S. aureus isolates (n = 202) were characterized using staphylococcal cassette chromosome mec (SCCmec) typing, pulse field gel electrophoresis (PFGE) analysis, spa typing and minimal inhibitory concentration (MIC) determination. The prevalence of the Panton-Valentine leukocidine (pvl) and several antibiotic resistance genes among the isolates were also detected by PCR. All of the S. aureus isolates were susceptible to vancomycin, daptomycin and linezolid. Three hospital isolates were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: CA-and HA-MRSA; SCCmec; PFGE; Spa; Pvl gene.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000600010

Multidrug resistant tuberculosis versus non-tuberculous mycobacterial infections: a CT-scan challenge
Provedor de dados: 55
Autores: Kahkouee,Shahram; Esmi,Elham; Moghadam,Azadeh; Karam,Mehrdad Bakhshayesh; Mosadegh,Leila; Salek,Solmaz; Tabarsi,Payam.
INTRODUCTION: Clinical, laboratory and imaging findings in patients with multidrug resistanttuberculosis (MDR-TB) and non-tuberculosis mycobacterium (NTM) are similar, and the majority of these patients present with positive smear for Acid Fast Bacilli (ADB) and no response to first line anti-TB treatment, so sputum culture and PCR are necessary, especially in NTM. OBJECTIVE: In this study we evaluate more details of imaging findings to help earlier diagnosis of pathogens. MATERIALS AND METHODS: 66 patients with positive smear for AFB and no response to first line anti-TB drugs were divided into two groups by PCR and culture: MDR-TB (43 patients) and NTM (23 patients). Age, sex, history of anti-TB treatment, smoking and CT-scan findings (parenchymal,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: MDR-TB; NTM; Tuberculosis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000200004

Sulbactam-based therapy for Acinetobacter baumannii infection: a systematic review and meta-analysis
Provedor de dados: 55
Autores: Chu,Haiqing; Zhao,Lan; Wang,Minggui; Liu,Yang; Gui,Tao; Zhang,Jingbo.
BACKGROUND: A number of studies have reported on the effectiveness of sulbactam-based therapies for Acinetobacter baumannii infection; however, there is little evidence that sulbactam-based therapies are more or less effective than alternative therapies. Unfortunately, there is a distinct lack of high quality data (i.e., from randomized controlled trials) available on this issue. Therefore, we conducted a systematic review and meta-analysis comparing the efficacy of sulbactam-based and non-sulbactam-based regimens in the treatment of A. baumannii infection. METHODS: We searched PubMed, MEDLINE, Biomedical Central, Google Scholar, the China National Knowledge Infrastructure, the Cochrane library, and the Directory of Open Access using the terms "sulbactam...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acinetobacter baumannii; Infection; Meta-analysis; Sulbactam; Systematic review.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000400001

Dyslipidemia and fasting glucose impairment among HIV patients three years after the first antiretroviral regimen in a Brazilian AIDS outpatient clinic
Provedor de dados: 55
Autores: Pinto Neto,Lauro Ferreira da Silva; Neves,Mariza Barros das; Ribeiro-Rodrigues,Rodrigo; Page,Kimberly; Miranda,Angelica Espinosa.
OBJECTIVE: To evaluate the cumulative incidence of dyslipidemia and fasting glucose impairment three years after initiating the first antiretroviral (ART) regimen and the association with the type of ART regimen in an AIDS outpatient clinic in Brazil. METHODS: Retrospective cohort of HIV-1 infected patients attending an outpatient HIV clinic in Vitoria, Brazil, between January/2010 and May/2011. Data, including blood pressure, dyslipidemia (high total cholesterol and low HDL-C), fasting glucose, and cardiovascular risk by Framingham Risk Score were abstracted from medical records from clinic visits six months prior and three years after starting ART. We assessed independent associated factors for dyslipidemia using multiple logistic regression. RESULTS:...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dyslipidemia; Fasting glucose; AIDS; ART; Co-morbidity.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000400009

Genotyping and drug resistance patterns of Mycobacterium tuberculosis strains observed in a tuberculosis high-burden municipality in Northeast, Brazil
Provedor de dados: 55
Autores: Luiz,Roberta dos Santos Silva; Suffys,Phillip; Barroso,Elizabeth Clara; Kerr,Ligia Regina Franco Sansigolo; Duarte,Cynthia Romariz; Freitas,Max Victor Carioca; Mota,Rosa Maria Salani; Frota,Cristiane Cunha.
OBJECTIVES: This study has used a combination of clinical information, spoligotyping, and georeferencing system to elucidate the genetic diversity of the Mycobacterium tuberculosis isolates circulating in a TB-prevalent municipality of Northeast Brazil. METHODS: A total of 115 M. tuberculosis strains were isolated from pulmonary tuberculosis patients from January 2007 to March 2008 in Fortaleza. Drug susceptibility and spoligotyping assays were performed and place of residence of the patients were georeferenced. RESULTS: Of the M. tuberculosis strains studied, 51 (44.3%) isolates were resistant to at least one drug (R-TB) and 64 (55.7%) were sensitive to all the drugs tested (S-TB). A high frequency of resistance was found in previously treated cases (84%)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tuberculosis; Drug-resistant tuberculosis; Georeferencing; Spoligotyping.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000300006

The clinical features and outcomes of acute liver failure associated with dengue infection in adults: a case series
Provedor de dados: 55
Autores: Tan,Soek-Siam; Bujang,Mohamad Adam.
OBJECTIVE: To describe the clinical manifestations and outcome of acute liver failure (ALF) associated with dengue viral infection, a rare but severe complication. METHODS: One hundred and fifty five consecutive patients with ALF admitted to the national liver centre from 2001 to 2009 were reviewed retrospectively. Eight cases due to dengue infection were identified and their clinical characteristics are described. RESULTS: All patients had severe dengue with one dengue shock syndrome. The median (minimum, maximum) age was 33.5 (17, 47) years with 50% female. The median (minimum, maximum) duration from the onset of fever to development of ALF was 7.5 (5, 13) days and the maximum hepatic encephalopathy (HE) grade were III in five patients and II in three...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acute liver failure; Dengue; Dengue hepatitis; Fulminant hepatic failure.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000200008

Assessing new strategies for TB diagnosis in low- and middle-income countries
Provedor de dados: 55
Autores: Kritski,Afrânio; Fujiwara,Paula I.; Vieira,Maria Armanda; Netto,Antonio Ruffino; Oliveira,Martha Maria; Huf,Gisele; Squire,S. Bertel.
In this manuscript, we report the current situation of tuberculosis globally and in Brazil, the need for new strategies toward tuberculosis control, focusing on new diagnostic technologies. Critical comments are given on the state of the art regarding the evaluation of new health technologies, degree of scientific evidence needed, evaluation of clinical impact, cost-effectiveness of incorporation into the health system and the social impact.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tuberculosis; Diagnostics; Impact; Evidence; Policy; Innovation; Regulatory agency.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000200015

Pneumonia severity index compared to CURB-65 in predicting the outcome of community acquired pneumonia among patients referred to an Iranian emergency
Provedor de dados: 55
Autores: Alavi-Moghaddam,Mostafa; Bakhshi,Hooman; Rezaei,Bareza; Khashayar,Patricia.
OBJECTIVE: To compare the prognostic value of the pneumonia severity index and the severity score for community-acquired pneumonia (CURB-65) in predicting mortality and the need for ICU admission of patients with community-acquired pneumonia referred to our emergency department. MATERIALS AND METHODS: This prospective study was performed on patients with community-acquired pneumonia admitted to the emergency department of Imam Hossein Medical Center, Tehran, Iran. A questionnaire with demographic information, clinical signs and symptoms, laboratory and radiographic findings was completed for each patient. The information required for calculating the pneumonia severity index and CURB-65 were extracted from the medical records. The patients' clinical outcome...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: CURB-65; PSI; Community-acquired pneumonia.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000200011

Genetic similarity of Burkholderia cenocepacia from cystic fibrosis patients
Provedor de dados: 55
Autores: Pretto,Luana; de-Paris,Fernanda; Machado,Alice Beatriz Mombach Pinheiro; Martins,Andreza Francisco; Barth,Afonso Luís.
Burkholderia cenocepacia may cause serious infections in patients with cystic fibrosis, and this microorganism can be highly transmissible. Pulsed-field gel electrophoresis is widely used to study the dynamics of strain spread in cystic fibrosis patients. The aim of this work was to perform pulsed-field gel electrophoresis-based molecular typing of B. cenocepacia isolates to evaluate the epidemiology of this species at our hospital. A total of 28 isolates from 23 cystic fibrosis patients were analyzed. Initially, we compared isolates obtained from the same patient at different periods of time. We then compared the pulsed-field gel electrophoresis profiles of 15 IIIA isolates, and in a third analysis, evaluated the genetic profile of 8 IIIB isolates from...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Burkholderia cenocepacia; Cystic fibrosis; PFGE; Genetic similarity.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000100014

Gardnerella vaginalis-associated bacterial vaginosis in Bulgarian women
Provedor de dados: 55
Autores: Gergova,Raina T.; Strateva,Tanya V.; Mitov,Ivan G.
ABSTRACT BACKGROUND: Bacterial vaginosis (BV) is the most common cause of vaginal discharge in women of reproductive age. The purpose of this study was to determine the frequency of BV in Bulgarian pregnant and nonpregnant women from several age ranges and to compare three different laboratory methods for Gardnerella vaginalis detection in patents suffering from BV. METHODS: Between September 2011 and June 2012, 809 women of 16-40 years of age separated in two major groups: nonpregnant - 469 (355 with and 114 without symptoms) and pregnant - 340 (213 and 127 respectively) were enrolled for the study. The women underwent three different laboratory tests simultaneously: scoring of Gram staining of vaginal smear, culture, and polymerase chain reaction (PCR)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacterial vaginosis; Gardnerella vaginalis; Bulgarian women.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000300002

Low seroprevalence of hepatitis E virus infection in pregnant women in Yunnan, China
Provedor de dados: 55
Autores: Huang,Fen; Ma,Tianwu; Li,Li; Zeng,Weikun; Jing,Shenrong.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000600017

In vitro activity of non-bactericidal concentrations of polymyxin B in combination with other antimicrobials against OXA-23-producing carbapenem-resistant Acinetobacter baumannii
Provedor de dados: 55
Autores: Netto,Bárbara; Vieira,Bruno J.; Hermes,Djuli M.; Ribeiro,Vanessa B.; Zavascki,Alexandre P.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000400022

Chlamydia trachomatis infection in a sample of northern Brazilian pregnant women: prevalence and prenatal importance
Provedor de dados: 55
Autores: Borborema-Alfaia,Ana Paula B. de; Freitas,Norma Suely de Lima; Astolfi Filho,Spartaco; Borborema-Santos,Cristina Maria.
There are limited data regarding prevalence of Chlamydia trachomatis infection among northern Brazilian pregnant women. OBJECTIVE: The purpose of this study was to estimate the prevalence of chlamydial infection among pregnant women in their third trimester and to determine the repercussion of this infection on their offspring. METHODS: In the first phase of this study 100 pregnant women receiving prenatal care in a local public university hospital were examined to assess the prevalence of genital C. trachomatis infection by polymerase chain reaction technique. In the second phase, 88 pregnant women were prospectively evaluated for premature rupture of membranes, puerperal consequences associated with chlamydial infection, and neonates were checked for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chlamydia trachomatis; Pregnant women; Neonatal infection; Respiratory symptoms; Polymerase chain reaction; Brazil.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000500006

New therapy of pleural empyema by deoxyribonuclease
Provedor de dados: 55
Autores: Kacprzak,Grzegorz; Majewski,Andrzej; Kolodziej,Jerzy; Rzechonek,Adam; Gürlich,Robert; Bobek,Vladimir.
Empyema is a severe complication of different diseases and traumas. Management of this complication is difficult and should comprise general and local procedures. The general procedure is mainly based on administering wide-spectrum antibiotics. Local management depends on patient general condition, but in all cases the essential procedure is to insert a drain into the pleural cavity and to evacuate the pus. Sometimes pus is very thick and its evacuation and following re-expansion of the lung is rather impossible. In these patients surgical intervention is needed. The use of intrapleural enzymes to support the drainage was first described in 1949 by Tillett and Sherry using a mixture of streptokinase and streptococcal deoxyribonuclease. Nowadays, purified...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Empyema; Lung; Viscosity; Deoxyribonuclease.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000100015

Treatment outcome of tuberculosis patients under directly observed treatment in Addis Ababa, Ethiopia
Provedor de dados: 55
Autores: Getahun,Belete; Ameni,Gobena; Medhin,Girmay; Biadgilign,Sibhatu.
BACKGROUND: Tuberculosis is one of the leading causes of mortality among infectious diseases worldwide. For effective tuberculosis control, it is a pre-requisite to detect the cases as early as possible, and to ensure that the tuberculosis patients complete their treatment and get cured. However, in many resource-constrained settings treatment outcome for tuberculosis has not been satisfactory. OBJECTIVE: The aim of the study was to assess the treatment outcome of tuberculosis patients and investigate the association of demographic and clinical factors with treatment success of patients enrolled in Directly Observed Treatment Short Course program in government owned health centers over the course of five consecutive years in Addis Ababa, Ethiopia. METHODS:...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Treatment outcome; Tuberculosis DOTS; Ethiopia.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000500003

Evaluation of the prescription and use of antibiotics in Brazilian children
Provedor de dados: 55
Autores: Del Fiol,Fernando de Sá; Lopes,Luciane Cruz; Barberato-Filho,Silvio; Motta,Cristiane de Cássia Bergamaschi.
INTRODUCTION: Inappropriate use of antibiotics leads to increased levels of bacterial resistance making it difficult to treat upper respiratory tract infections. The appropriate use of these drugs has a fundamental role in controlling resistance and in success of treatment of childhood infections. Therefore, the aim of this study was to assess the prescription and use of antibiotics for Brazilian children. METHODS: The use of antibiotics in 160 children was monitored in two Primary Health Centers by questionnaires administered to parents and caregivers that assessed the social, demographic and clinical conditions of the children. Furthermore, the antibiotic use pattern was ascertained in these children and compared to the recommendations of the Brazilian...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antibiotic Pediatrics Prescription.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000300005

Multidrug-resistant tuberculosis
Provedor de dados: 55
Autores: Lemos,Antônio Carlos Moreira; Matos,Eliana Dias.
Despite the efforts made worldwide to reduce the number of cases of drug-susceptible tuberculosis, multidrug-resistant tuberculosis (MDR-TB) constitutes an important public health issue. Around 440,000 new cases of MDR-TB are estimated annually, although in 2008 only 7% of these (29,423 cases) were notified. The laboratory tests for diagnosing resistance may be phenotypic (based on culture growth in the presence of drugs) or genotypic (i.e. identification of the presence of mutations that confer resistance). The urgent need for a rapid means of detecting resistance to anti-TB drugs has resulted in the development of many genotypic methods over recent years. The treatment of MDR-TB is expensive, complex, prolonged (18-24 months) and associated with a higher...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Multidrug-resistant tuberculosis; Review; Diagnosis; Treatment.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000200018

Prevalence of community acquired infections in down syndrome children: a single center study
Provedor de dados: 55
Autores: Eldars,Waleed; Eldegla,Heba; Yahia,Sohier; Ela,Mohamed Abou; Hawas,Samia.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000500022

Comment on "Viral acute gastroenteritis: clinical and epidemiological features of co-infected patients"
Provedor de dados: 55
Autores: Luchs,Adriana.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000100022

Tuberculosis research meeting in Bahia
Provedor de dados: 55
Autores: Netto,Eduardo Martins.
Tipo: Info:eu-repo/semantics/article
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000200001

Co-infection cases of human common respiratory viruses in Beijing, 2010-2012
Provedor de dados: 55
Autores: Cui,Shu-Juan; Shi,Wei-Xian; Huang,Fang; Pang,Xing-Huo; Deng,Ying.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000200032

Posaconazole as rescue therapy in African histoplasmosis
Provedor de dados: 55
Autores: Gonçalves,Daniel; Ferraz,Catarina; Vaz,Luisa.
Posaconazole Histoplasmosis Salvage therapy African histoplasmosis is a granulomatous mycosis caused by Histoplasma capsulatum var. duboisii. Treatment is usually extrapolated from guidelines for classical histoplasmosis, and includes 2-4 weeks of amphotericin B followed by a step-down maintenance therapy with itraconazole. Pediatric usage of posaconazole, an oral second-generation azole, remains off-label, but recent surveys show that it is safe and well tolerated in children. We report a case of disseminated African histoplasmosis in a 12-year-old boy from Guinea-Bissau. Therapy with amphotericin B and itraconazole led to a progressive clinical deterioration. A dramatic and lasting improvement was observed using posaconazole. He completed 12 months of...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Posaconazole; Histoplasmosis; Salvage therapy.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000100018

Hepatitis B virus in the State of Alagoas, Brazil: genotypes characterization and mutations of the precore and basal core promoter regions
Provedor de dados: 55
Autores: Eloy,Alba Maria Xavier; Moreira,Regina Célia; Lemos,Marcílio Figueiredo; Silva,Jéfferson Luis de Almeida; Coêlho,Maria Rosângela Cunha Duarte.
The aims of this study were to investigate the genotypes of hepatitis B virus and to identify the precore G1896A and basal core promoter A1762T/G1764A mutations in HBsAg and anti-HBc-positive patients. Eighty-three asymptomatic individuals, three with acute hepatitis B and 33 with chronic hepatitis B referred to viral hepatitis centers in the State of Alagoas, Brazil were analyzed according to their viral load, HBeAg/anti-HBe profile and alanine aminotransferase serum level. The genotypes identified were: A (92.5%), C (5%), D (1.25%) and F (1.25%). The precore mutation was detected in 3.8% of sequences and basal core promoter mutation in 52.4%. These were identified in 45.45% of the asymptomatic individuals and 54.55% of the patients with chronic...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Genotypes; HBV mutation; Alagoas; Brazil.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000600013

Trends in bacterial resistance in a tertiary university hospital over one decade
Provedor de dados: 55
Autores: Góngora Rubio,Fernando; Oliveira,Viviane Decicera Colombo; Rangel,Regina Mara Custódio; Nogueira,Mara Corrêa Lelles; Almeida,Margarete Teresa Gottardo.
The objective of this study was to investigate bacterial resistance trends, infection sites and the relationship between resistance and admittance to the intensive care unit (ICU). A total of 53,316 bacteria identified between 1999 and 2008 were evaluated. Multidrug resistance was characterized when gram-negative bacilli (GNB) presented resistance to two or more classes of antibiotics. Gram-positive cocci (CPC) were assessed for resistance to penicillin, oxacillin and vancomycin. GNB were the most common (66.1%) isolate. There was a 3.7-fold overall increase in multidrug resistant GNB over the study period; Acinetobacter baumanii and Staphylococcus aureus were the most prevalent. Highest increases were recorded for Kleb siella pneumoniae (14.6-fold) and...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Multiresistance; Bacteria; Trends.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000400014

Spontaneous pneumomediastinum due to paralytic rabies
Provedor de dados: 55
Autores: Wang,Wuping; Ni,Yunfeng; Gao,Kongxiang; Lu,Qiang; Li,Xiaofei.
Rabies is a fatal disease resulting from rabies virus infection, causing severe neurological symptoms and ultimately death by destroying the nervous system. In general, a patient tends to see a neurologist or an infectious diseases physician, with very common and typical discipline-related signs and symptoms, such as hydrophobia, aerophobia, and mental disorders. However, we reported a rabies patient who was first admitted to see a thoracic surgeon with spontaneous pneumomediastinum.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Rabies; Spontaneous pneumomediastinum.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000100016

Splenectomy prior to antiviral therapy in patients with hepatitis C virus related decompensated cirrhosis
Provedor de dados: 55
Autores: Fanpu,Ji; Zhang,Shu; Huang,Na; Deng,Hong; Li,Zongfang.
Patients with hepatitis C virus-related decompensated cirrhosis can benefit frominterferonbased antiviral therapy, but the common complication of cytopenia is a contraindication for this treatment. Splenectomy prior to interferon therapy may alleviate this problem. To investigate whether splenectomy improves the efficacy of antiviral therapy, 13 interferonnaïve hepatitis C virus decompensated cirrhotic patients underwent splenectomy between January 2008 and January 2011, followed 1-3 months later by an interferon-based therapeutic regimen (pegylated/standard interferon-α combined with ribavirin for 48 weeks). Ten (76.9%) of the patients developed postoperative complications, which included minor portal vein thrombosis (2/13, 15.4%) and transient ascites...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Hepatitis C virus; Thrombocytopenia; Splenectomy; Antiviral therapy.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000500014

Categorization of dengue fever according to phase of illness-a suggestion for clinical studies using single diagnostic sample
Provedor de dados: 55
Autores: Bhaskar,Emmanuel; Praveena,Raveendran; Sowmya,Gopalan; Moorthy,Swathy.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000500021

Sentinel surveillance of influenza and other respiratory viruses, Brazil, 2000-2010
Provedor de dados: 55
Autores: Freitas,Felipe Teixeira de Mello.
There are scanty data on the epidemiology of influenza and other respiratory viruses in South America and Brazil. The aim of this study was to summarize the data from the Brazilian surveillance system of influenza and other respiratory viruses and discuss the patterns of viral circulation. The system is based on detecting cases of influenza-like illness in sentinel sites and weekly collection of five nasopharyngeal secretions samples, which are processed in state public health laboratories for respiratory viruses by indirect immunofluorescence assay. Data from 2000 to 2010 were described over time, by region, gender, and age group, and an analysis of Spearman correlation was performed between monthly influenza detection and rainfall and temperature data in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Influenza; Respiratory syncytial virus; Public health surveillance; Brazil.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000100010

Bacteremia due to Achromobacter xylosoxidans in neonates: clinical features and outcome
Provedor de dados: 55
Autores: Turel,Ozden; Kavuncuoglu,Sultan; Hosaf,Emine; Ozbek,Sibel; Aldemir,Esin; Uygur,Turkan; Hatipoglu,Nevin; Siraneci,Rengin.
OBJECTIVE: We report an outbreak of Achromobacter xylosoxidans at a neonatal intensive care unit. We aimed to present clinical, laboratory and treatment data of the patients. Materials and METHODS: All consecutive episodes of bacteremia due to A. xylosoxidans at our neonatal intensive care unit, beginning with the index case detected at November 2009 until cessation of the outbreak in April 2010, were evaluated retrospectively. RESULTS: Thirty-four episodes of bacteremia occurred in 22 neonates during a 6-month period. Among the affected, 90% were preterm newborns with gestational age of 32 weeks or less and 60% had birth weight of 1000 g or less. Endotracheal intubation, intravenous catheter use, total parenteral nutrition and prolonged antibiotic therapy...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Achromobacter xylosoxidans; Bloodstream infection; Neonate.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000400011

Hematological particularities and co-infections in injected drug users with AIDS
Provedor de dados: 55
Autores: Brunetta,Denise Menezes; De Santis,Gil Cunha; Vilar,Fernando Crivelenti; Brandão,Renata Amorim; Muniz,Renata Zomer de Albernaz; Lima,Geovana Momo Nogueira de; Amorelli-Chacel,Manuela Emiliana; Covas,Dimas Tadeu; Machado,Alcyone Artioli.
HIV patients infected through injected drug use have poorer prognosis than other groups. We evaluated the hematological alterations and rates of co-infections in injected drug use patients with AIDS. Injected drug use patients were younger, predominantly of male gender, and presented lower CD4, total lymphocyte, and platelet counts, but not neutrophil count, than control group. Injected drug use patients had a higher rate of hepatitis C and mycobacteria infection. Furthermore, all injected drug use patients with hemoglobin &lt;10.0 g dL-1 and lymphocyte &lt;1000 µL-1 had CD4 count lower than 100 µL-1. In conclusion, HIV-infected injected drug use patients constitute a special group of patients, and hemoglobin concentration and lymphocyte count can be used...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: AIDS; Injected drug use; Anemia; HCV; Mycobacteria.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000600005

Hantavirus infection in HIV positive individuals in Rio de Janeiro, Brazil: a seroprevalence study
Provedor de dados: 55
Autores: Lamas,Cristiane da Cruz; Oliveira,Renata de; Silva,Raphael Gomes da; Vicente,Luciana Helena Bassan; Almeida,Endiá Barros de; Lemos,Elba Regina Sampaio de; Bóia,Márcio Neves.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000100026

Safety aspects of protease inhibitors for chronic hepatitis C: adverse events and drug-to-drug interactions
Provedor de dados: 55
Autores: Teixeira,Rosângela; Nascimento,Yone de Almeida; Crespo,Déborah.
The standard of care therapy of chronic hepatitis C with the combination of pegylated interferon and ribavirin for 24 or 48 weeks was a remarkable accomplishment of the past decade. However, sustained virological responses rates of about 80% (genotypes 2-3) and 50% (geno 3 type 1) were not satisfactory especially for patients infected with genotype 1. Important advances in the biology of HCV have made possible the development of the direct-acting antiviral agents boceprevir and telaprevir with substantial increase in the rates of sustained virological response with shorter duration of therapy for a large number of patients. However, the complexity of triple therapy is higher and several new side effects are expected suggesting greater expertise in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hepatitis C; Protease inhibitors; Adverse events; Drug interactions.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000200013

Olecranon bursitis caused by group C streptococcus in a patient with tophaceous gout
Provedor de dados: 55
Autores: Morsch,Claudine Predebon; Batistella,Fabio; Staub,Henrique Luiz.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000100024

Factors influencing the early mortality in haematological malignancy patients with nosocomial Gram negative bacilli bacteraemia: a retrospective analysis of 154 cases
Provedor de dados: 55
Autores: Metan,Gökhan; Demiraslan,Hayati; Kaynar,Leyla Gül; Zararsız,Gökmen; Alp,Emine; Eser,Bülent.
BACKGROUND: The aim of this study is to assess the factors influencing the early mortality (7- day after index blood culture) in haematological malignancy patients with Gram negative bacilli (GNB) bacteraemia. METHODS: Infection control committee records were reviewed to identify the cases between March 2006 and June 2011. Only one bacteraemic episode per patient was included in the study. RESULTS: A total of 154 patients with GNB bacteraemia were identified. The early mortality rate was 19.5% (30 out of 154). Blood cultures revealed Enterobacteriacea in 120 patients (Escherichia coli; 86, Klebsiella spp.; 28, Enterobacter cloacea; 6) and glucose non-fermenting GNB in 34 patients (Pseudomonas aeruginosa; 15, Acinetobacter baumannii; 11, Stenotrophomonas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Haematological malignancy; Bacteraemia; Gram negative bacilli; Mortality; Extended-spectrum beta-lactamase; Intensive care unit; Multidrug resistance.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000200005

A prevalence study of Chlamydia infections in Turkish population
Provedor de dados: 55
Autores: Köse,Şükran; Ersan,Gürsel; Sender,Süheya Serin; Devrim,Ilker; Inal,Mehmet Murat.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000100023

Economic evaluation of treatments for chronic hepatitis B
Provedor de dados: 55
Autores: Wiens,Astrid; Lenzi,Luana; Venson,Rafael; Pedroso,Maria Lúcia Alves; Correr,Cassyano Januário; Pontarolo,Roberto.
The aim of this study was to conduct a cost-utility study of adefovir, entecavir, interferon alpha, pegylated interferon alpha, lamivudine and tenofovir for chronic hepatitis B in the context of Brazilian Public Health Care System. A systematic review was carried out for efficacy and safety. Another review was performed to collect utility data and transition probabilities between health states. A Markov model was developed in a time horizon of 40 years with annual cycles for three groups of: HBeAg positive, HBeAg negative, and all patients. These strategies were compared to a fourth group that received no treatment. Discount rates of 5% were applied and sensitivity analyses were performed. Tenofovir offered the best cost-utility ratio for the three...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chronic hepatitis B; Economic evaluation; Treatments.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000400006

Revisiting the Rich's formula: an update about granulomas in human tuberculosis
Provedor de dados: 55
Autores: Coelho Filho,João Carlos; Takenami,Iukary; Arruda,Sérgio.
The formula proposed by Rich in 1951 explained the formation in a tuberculous lesion in a period that was unknown cellular functions, cytokines and other immunological aspects involved in granuloma formation by tuberculosis; its components are assembled conceptually to explain the pathogenic mechanisms involved in the granulomatous lesion in tuberculosis. In this manuscript, we report an update of Rich's formula based on the new and old concepts about pathogenic mechanisms involved in the granulomatous lesion in tuberculosis. Current knowledge allows us to conclude that the balance between the characteristics of the bacillus and host protective response is necessary to indicate the outcome of pathogenesis, infection or active disease and the necrosis...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rich's formula; Tuberculosis; Immunopathogenesis; Granuloma; Hypersensitivity.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000200017

Brazilian experience in EU-CORE: daptomycin registry and treatment of serious Gram-positive infections
Provedor de dados: 55
Autores: Timerman,Artur; Brites,Carlos; Bicudo,Eliana; Grinbaum,Renato S.; Costa Filho,Rubens; Carrilho,Claudia D.M.; Bichels,Andre; Barreto,Tânia.
OBJECTIVES: To collect data about non-controlled prescribing use of daptomycin and its impact among Brazilian patients with serious Gram positive bacterial infection, as well as the efficacy and safety outcomes. MATERIALS AND METHODS: This is a multi-center, retrospective, non-interventional registry (August 01, 2009 to June 30, 2011) to collect data on 120 patients (44 patients in the first year and 76 patients in the second year) who had received at least one dose of commercial daptomycin in Brazil for the treatment of serious Gram-positive bacterial infection. RESULTS: Right-sided endocarditis (15.8%), complicated skin and soft tissue infections (cSSTI)wound (15.0%) and bacteremia-catheter-related (14.2%) were the most frequent primary infections; lung...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Daptomycin; Methicillin-resistant; Staphylococcus aureus; Bacteremia; Endocarditis; Skin diseases; Infectious.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000600004

Aging with HIV: a practical review
Provedor de dados: 55
Autores: Cardoso,Sandra Wagner; Torres,Thiago Silva; Santini-Oliveira,Marilia; Marins,Luana Monteiro Spindola; Veloso,Valdiléa Gonçalves; Grinsztejn,Beatriz.
The worldwide elderly population is expected to grow by an additional 694 million people by 2025. By that time, there will be approximately two billion elderly people in the world, most of whom (80%) will be living in developing countries. Based on recent estimates, this population will number over 40 million in 2030 in Brazil and a consequent increase in governmental spending for this population can be expected. Since highly active antiretroviral therapy became available in the mid-1990s, the life expectancy of people living with HIV has increased significantly. Approximately 12 million life years were added to the world between 1996 and 2008 as a consequence of wider access to highly active antiretroviral therapy. In Brazil, the incidence of AIDS among...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: HIV; AIDS; Aging; Elderly; Brazil; Comorbidity; HAART.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000400013

Comparison of clinical and laboratory characteristics between children and adults with dengue
Provedor de dados: 55
Autores: Souza,Luiz José de; Pessanha,Laís Bastos; Mansur,Laura Carvalho; Souza,Luiza Assed de; Ribeiro,Mariana Barbosa Tâmega; Silveira,Monique do Vale da; Souto Filho,João Tadeu Damian.
Over the past several years, the epidemiological profile of dengue has been changing progressively and is currently characterized by an increase in the number of cases in children under 15 years of age. This study was aimed at comparing the clinical and laboratory features between adults and children with dengue; therefore, we performed a cross-sectional analysis of 5686 individuals with laboratory-confirmed dengue who sought treatment at a healthcare facility in Rio de Janeiro, Brazil from 2010 to 2011. A multivariate analysis indicated that myalgia (OR = 2.58; CI 95% = 2.08-3.18), retro-orbital pain (OR = 1.36; CI 95% = 1.15-1.62), nausea (OR = 1.92; CI 95% = 1.60-2.30), and arthralgia (OR = 3.64; CI 95% = 2.72-4.89) were the most frequent clinical...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dengue; Dengue fever; Clinical spectra; Epidemiology.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000100005

Brazilian guidelines for the management of candidiasis - a joint meeting report of three medical societies: Sociedade Brasileira de Infectologia, Sociedade Paulista de Infectologia and Sociedade Brasileira de Medicina Tropical
Provedor de dados: 55
Autores: Colombo,Arnaldo Lopes; Guimarães,Thaís; Camargo,Luis Fernando Aranha; Richtmann,Rosana; Queiroz-Telles,Flavio de; Salles,Mauro José Costa; Cunha,Clóvis Arns da; Yasuda,Maria Aparecida Shikanai; Moretti,Maria Luiza; Nucci,Marcio.
Candida infections account for 80% of all fungal infections in the hospital environment, including bloodstream, urinary tract and surgical site infections. Bloodstream infections are now a major challenge for tertiary hospitals worldwide due to their high prevalence and mortality rates. The incidence of candidemia in tertiary public hospitals in Brazil is approximately 2.5 cases per 1000 hospital admissions. Due to the importance of this infection, the authors provide a review of the diversity of the genus Candida and its clinical relevance, the therapeutic options and discuss the treatment of major infections caused by Candida. Each topography is discussed with regard to epidemiological, clinical and laboratory diagnostic and therapeutic recommendations...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Candidiasis; Candidemia; Treatment; Antifungals.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000300001

Strong correlation by ultrasonography of hepatomegaly and the presence of co-infection in HIV/HCV cirrhotic patients
Provedor de dados: 55
Autores: Vezozzo,Denise Cerqueira Paranaguá; Mendes-Correa,Maria Cassia; Cunha-Silva,Marlone; Alvarado-Mora,Mónica Viviana; França,João Ítalo Dias; Sebba,José Luiz; Nicodemo,Antonio Carlos; Oliveira,Claudia P.M.S.; Carrilho,Flair José.
OBJECTIVES: Progression of hepatic fibrosis is accelerated in patients co-infected with human immunodeficiency virus and hepatitis C virus compared to hepatitis C virus mono-infected patients. This study aimed to compare ultrasound features and selected clinical and biochemical variables between patients with human immunodeficiency virus/hepatitis C virus co-infection (n = 16) versus hepatitis C virus mono-infection (n = 16). METHODS: Each patient underwent abdominal ultrasound, and a specific evaluation was performed in order to detect findings consistent with chronic liver disease. Characterization of spleen size, liver structural pattern, diameter of the portal, spleen, and mesenteric veins was based on classical ultrasound parameters. Propensity score...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ultrasonography; HIV/HCV co-infection; Hepatomegaly; Liver size; Cirrhosis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000200006

Therapeutic impact of CT-guided percutaneous catheter drainage in treatment of deep tissue abscesses
Provedor de dados: 55
Autores: Asai,Nobuhiro; Ohkuni,Yoshihiro; Yamazaki,Ikuo; Kaneko,Norihiro; Aoshima,Masahiro; Kawamura,Yasutaka.
Combination therapy of CT-guided percutaneous drainage and antibiotics is the first-line treatment for abscesses. Its effectiveness has been demonstrated. However, the therapeutic impact of this procedure for infection treatment has never been reported. We retrospectively analyzed all 47 patients who received CT-guided percutaneous drainage for infection treatment. Patients' characteristics, pathogens isolated, antibiotics administered, technical and clinical outcomes, complications related to this procedure and therapeutic impacts were investigated. Patients were 26 males and 21 females. The mean age was 63.5 years (±18.7). The diseases targeted were 19 retroperitoneal abscesses, 18 intraabdominal abscesses, three pelvic abscesses, and seven others. As...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: CT-guided percutaneous drainage; Infection; Abscess.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000400015

Tuberculosis in Brazil: last ten years analysis - 2001-2010
Provedor de dados: 55
Autores: Oliveira,Gisele Pinto de; Torrens,Ana Wieczorek; Bartholomay,Patrícia; Barreira,Draurio.
OBJECTIVE: To describe tuberculosis epidemiological situation in Brazil, as well as program performance indicators in 2001-2010 period, and discuss the relationship between changes observed and control measures implemented in this century first decade. METHODS: It is a descriptive study, data source was the Information System for Notifiable Diseases (Sinan), Mortality Information System (SIM), Unified Health System Hospital Information System (SIH/SUS) and TB Multidrug-resistant Surveillance System (MDR-TB/SS). Indicators analyzed were organized into four major groups: TB control program (TCP) coverage and case detection; morbidity; treatment and TCP performance; and mortality. RESULTS: In the years analyzed there was a decrease in the number of new cases...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tuberculosis; Epidemiology; Surveillance; Information system; Data quality.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000200016

Validity of the polymerase chain reaction in the diagnosis of clinically suspected cases of American visceral leishmaniasis
Provedor de dados: 55
Autores: Pedrosa,Celia Maria Silva; Ximenes,Ricardo Arraes de Alencar; Almeida,Wendell Alexandre Pinheiro de; Rocha,Eliana Maria Mauricio da.
To test the validity of the polymerase chain reaction for diagnosing American visceral leishmaniasis, 88 suspected cases were studied. Diagnosis was confirmed in 47 (53.5%) and ruled out in 41 (46.5%) patients. Samples of bone marrow and peripheral blood were processed by polymerase chain reaction to evaluate the sensitivity and specificity of the test and its agreement beyond chance with microscopy examination. The polymerase chain reaction was positive in bone marrow of 100% of the patients with amastigotes seen with microscopy examination, and in 59.5% in those where no parasite were seen. Agreement beyond chance between visualization of the parasite in bone marrow aspirates and polymerase chain reaction was considered weak (Kappa = 0.41). Concordance...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: American visceral leishmaniasis; Diagnosis; Polymerase chain reaction; Peripheral blood; Bone marrow blood.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000300003

Pantoea dispersa: an unusual cause of neonatal sepsis
Provedor de dados: 55
Autores: Mehar,Veerendra; Yadav,Dinesh; Sanghvi,Jyoti; Gupta,Nidhi; Singh,Kuldeep.
Neonatal septicemia is the most important cause of neonatal mortality. A wide variety of bacteria both aerobic and anaerobic can cause neonatal sepsis. Genus Pantoea is a member of Enterobacteriaceae family that inhabits plants, soil and water and rarely causes human infections, however, Pantoea dispersa has not been reported as a causative organism for neonatal sepsis. We hereby report two neonates with early onset sepsis caused by Pantoea dispersa. Early detection and appropriate antibiotic therapy can improve overall outcome of this rare infection in neonates.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Neonatal sepsis; Pantoea dispersa; Enterobacteriacae.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000600022

Study of bronchoalveolar lavage in HIV-infected children
Provedor de dados: 55
Autores: Sias,Selma Maria de Azevedo; Nunes,Raquel Coronato; Cabral,Livia Maria Maia Nunes; Oliveira,Renata Mendonca de; Rocha,Tamires dos Santos; Cardoso,Claudete Aparecida Araújo.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000200031

Differential gene expressions of the MAPK signaling pathway in enterovirus 71-infected rhabdomyosarcoma cells
Provedor de dados: 55
Autores: Shi,Weifeng; Hou,Xueling; Li,Xiang; Peng,Hongjun; Shi,Mei; Jiang,Qingbo; Liu,Xiping; Ji,Yun; Yao,Yuhua; He,Caizhen; Lei,Xiangdong.
BACKGROUND: Mitogen-activated protein kinase (MAPK) signaling pathway plays an important role in response to viral infection. The aim of this study was to explore the function and mechanism of MAPK signaling pathway in enterovirus 71 (EV71) infection of human rhabdomyosarcoma (RD) cells. METHODS: Apoptosis of RD cells was observed using annexin V-FITC/PI binding assay under a fluorescence microscope. Cellular RNA was extracted and transcribed to cDNA. The expressions of 56 genes of MAPK signaling pathway in EV71-infected RD cells at 8 h and 20 h after infection were analyzed by PCR array. The levels of IL-2, IL-4, IL-10, and TNF-α in the supernatant of RD cells infected with EV71 at different time points were measured by ELISA. RESULTS: The viability of RD...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Enterovirus 71; Rhabdomyosarcoma cells; MAPK; PCR array.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000400005

Therapeutic effects of blood purification in treatment of fulminant hepatic failure
Provedor de dados: 55
Autores: Pu,Yunchuan; Yang,Daokun; Mao,Yanqun; Zhang,Ying; Chen,Kaihong.
OBJECTIVES: To evaluate the clinical effects of blood purification for treating fulminant hepatic failure (FHF). METHODS: Thirty-three severe FHF patients with hepatic encephalopathy (HE) above grade III were subjected to a combined blood purification treatment in addition to the comprehensive liver protection therapy. Patients underwent continuous hemofiltration on a daily basis during the daytime followed by sequential treatment with plasma exchange or hemodialysis every 2-3 days. The therapeutic effects of this treatment were evaluated. RESULTS: After treatment with blood purification, restoration of consciousness (those who abandoned the treatment without restoration of consciousness were excluded) was achieved in 6 of 8 cases (75%) in acute liver...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Liver failure; Hepatic encephalopathy; Blood purification; Therapy.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000400007

A comparative analysis between survivors and nonsurvivors patients treated with tigecycline
Provedor de dados: 55
Autores: Curcio,Daniel.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000200030

Antimicrobial susceptibility associated with bloodstream infections in children: a referral hospital-based study
Provedor de dados: 55
Autores: Ashtiani,Mohammad Taghi Haghi; Mamishi,Setareh; Masoomi,Ahmad; Nasiri,Nafiseh; Hosseini,Mohammad; Nikmanesh,Bahram; Pourakbari,Babak; Rezaei,Nima.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000400020

Value of real-time polymerase chain reaction in bronchoalveolar lavage fluid for diagnosis of pediatric pulmonary tuberculosis
Provedor de dados: 55
Autores: Wang,Xinfeng; Wu,YanHua; Zhang,Kaihui; Guan,Cuiping; Gao,Xusheng; Wang,Maoshui.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000600018

Inappropriate surgical chemoprophylaxis and surgical site infection rate at a tertiary care teaching hospital
Provedor de dados: 55
Autores: Rana,Devang Ashwinkumar; Malhotra,Supriya Deepak; Patel,Varsha Jitendra.
OBJECTIVES: This study aimed to analyze the pattern of surgical chemoprophylaxis, surgical site infection rate, and to check rationality of surgical chemoprophylaxis based on Kunin's criteria. MATERIALS AND METHODS: A prospective, observational study was performed on patients undergoing surgery, in a tertiary care teaching hospital. Data were collected in a pro-forma which included the patients' details, prescriptions from date of admission to discharge or any other outcome and operative notes. Surgical site infection as defined by Centre for Disease Control criteria was recorded. Rationality was assessed based on Kunin's criteria. RESULTS: Total 220 patients were enrolled over a period of one year. Mean hospital stay was 8.67 ± 5.17 days. A total of 2294...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Kunin's criteria; Rationality; Surgical chemoprophylaxis; Surgical site infection (SSI).
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000100008

Intestinal microsporidiosis in a reference center
Provedor de dados: 55
Autores: Costa,Loredana Nilkenes Gomes da; Marson,Fernando Augusto de Lima; Teixeira,Angela Terezinha Lauand Sampaio; Sales,Célia Regina Mendes; Levy,Carlos Emílio.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000600021

Aging with HIV: an overview of an urban cohort in Rio de Janeiro (Brazil) across decades of life
Provedor de dados: 55
Autores: Torres,Thiago Silva; Cardoso,Sandra Wagner; Velasque,Luciane de Souza; Marins,Luana Monteiro Spindola; Oliveira,Marília Santini de; Veloso,Valdilea Gonçalves; Grinsztejn,Beatriz.
The introduction of highly active antiretroviral therapy during the 1990s was crucial to the decline in the rates of morbidity and death related to the acquired immunodeficiency syndrome (AIDS) and turned human immunodeficiency virus (HIV) infection into a chronic condition. Consequently, the HIV/AIDS population is becoming older. The aim of this study was to describe the immunological, clinical and comorbidity profile of an urban cohort of patients with HIV/AIDS followed up at Instituto de Pesquisa Clinica Evandro Chagas, Oswaldo Cruz Foundation in Rio de Janeiro, Brazil. Retrospective data from 2307 patients during January 1st, 2008 and December 31st, 2008 were collected. For continuous variables, Cuzick's non-parametric test was used. For categorical...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: HIV; AIDS; Aging; Elderly; Brazil; Comorbidity; HAART.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000300004

Clinical implications of vancomycin susceptibility testing in Staphylococcus aureus
Provedor de dados: 55
Autores: Mimica,Marcelo J.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000200028

Immune restoration in human immunodeficiency virus and hepatitis C virus coinfected patients after highly active antiretroviral therapy
Provedor de dados: 55
Autores: Antonello,Vicente Sperb; Appel-da-Silva,Marcelo Campos; Kliemann,Dimas Alexandre; Santos,Breno Riegel; Tovo,Cristiane Valle.
OBJECTIVE: To evaluate the influence of hepatitis C virus on immunological and virological responses after highly active antiretroviral therapy initiation in human immunodeficiency virus/hepatitis C virus coinfected patients compared to monoinfected human immunodeficiency virus-infected patients. METHODS: The study enrolled 65 human immunodeficiency virus-1-infected subjects who initiated highly active antiretroviral therapy and attended follow-up visits over 48 weeks from 2008 to 2010. They were grouped based on hepatitis C virus-RNA results. Virological and immunological responses were monitored at baseline and at the end of weeks 12, 24, 36, and 48. RESULTS: There were 35 human immunodeficiency virus monoinfected and 30 human immunodeficiency...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: HIV; Hepatitis C; Coinfection; HAART; CD4; Immunological response.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000500007

Pott abscess mimicking aortic aneurysm in chest X-ray
Provedor de dados: 55
Autores: Akkoyunlu,Yasemin; Aslan,Turan; Akkoyunlu,Muhammed Emin.
Tipo: Info:eu-repo/semantics/article
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000100019

Obscure gastrointestinal bleeding caused by hookworms
Provedor de dados: 55
Autores: Yi,Fengming; Huang,Meifang.
Tipo: Info:eu-repo/semantics/report
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000200026

Etiology of bronchopulmonary infections in Bulgarian cystic fibrosis patients
Provedor de dados: 55
Autores: Strateva,Tanya; Petrova,Guergana; Stratev,Alexander; Perenovska,Penka; Mitov,Ivan.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000500019

Propionibacterium acnes-killed attenuates the inflammatory response and protects mice from sepsis by modulating inflammatory factors
Provedor de dados: 55
Autores: Silva,José Bruno Nunes Ferreira da; Oliveira,Samara Kelly Mendonça de; Campos,Ingrid Araújo; Carvalho-Júnior,Carlson Helder Reis de; Coutinho,Thiago da Cunha; Silva,Teresinha Gonçalves.
BACKGROUND: Sepsis is a systemic inflammation associated with infection caused by pathogenic micro-organisms with high mortality rates. OBJECTIVE: In this study, we investigated the protective effect of Propionibacterium acnes-killed against polymicrobial sepsis induced by cecal ligation and puncture. METHODS: The mice were treated by intramuscular route in 1, 3, 5, and 7 days before the cecal ligation and puncture induction. The control group animals received vehicle (saline solution 0.9%) and the animals of the treated group received the P. acnes-killed (0.4 mg/animal). After anesthesia, midline laparotomy was performed with exposure of cecum followed by ligature and one transverse perforation of the same, with a 18 G needle, for induction of lethal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Propionibacterium acnes; Immunomodulation; Sepsis; Cytokines.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000100004

Erratum in «High rate of virologic supression with darunavir/ritonavir plus optimazed background therapy among highly antiretroviral-experienced HIV-infected patients: results of a prospective cohort study in São Paulo, Brazil»
Provedor de dados: 55
Autores: Vidal,José Ernesto; Song,Alice Tung Wan; Matos,Maria Laura; Bartmann,Daniel; Anjos,Guilherme dos; Miranda,Érique José Peixoto de; Freitas,Ângela Carvalho; Dalben,Mirian de Freitas; Santana,Claudinei; Segurado,Aluísio Cotrim; Barreto,Cláudia Cortese; Hernández,Adrián Vladimir.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000300017

Community-acquired pneumonia at the Hospital de Clínicas de Porto Alegre: evaluation of a care protocol
Provedor de dados: 55
Autores: Mocelin,Clei Angelo; Santos,Rodrigo Pires dos.
To assess the adequacy of medical prescriptions for community-acquired pneumonia at the emergency department of the Hospital de Clínicas de Porto Alegre, we conducted a prospective cohort study, from January through April 2011. All patients with suspected pneumonia were selected from the first prescription of antimicrobials held in the emergency room. Patients with a description of pneumonia, community-acquired pneumonia, respiratory infection, or other issues related to community-acquired pneumonia were selected for review. Two-hundred and fifteen patients were studied. Adherence to the hospital care protocol was: 11.2% for the initial recommended tests (chest X-ray and collection of sputum sample), 34.4% for blood cultures, and 92.1% for the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pneumonia; Community; Treatment.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000500001

Contribution of different mechanisms to the resistance to fluoroquinolones in clinical isolates of Salmonella enterica
Provedor de dados: 55
Autores: Rushdy,Abeer Ahmed; Mabrouk,Mona Ibrahim; Abu-Sef,Ferialla Abdel-Hamid; Kheiralla,Zeinab Hassan; Abdel -All,Said Mohamed; Saleh,Neveen Mohamed.
OBJECTIVES: To study the potential factors include gene mutation, efflux pump and alteration of permeability associated with quinolone-resistance of Salmonella enterica strains isolated from patients with acute gastroenteritis and to evaluate the degree of synergistic activity of efflux pump inhibitors when combined with ciprofloxacin against resistant isolates. METHODS: Antimicrobial resistance patterns of fifty-eight Salmonella isolates were tested. Five isolates were selected to study the mechanism of resistance associated with quinolone group, including mutation in topoisomerase-encoding gene, altered cell permeability, and expression of an active efflux system. In addition, the combination between antibiotics and efflux pump inhibitors to overcome the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Salmonella; Fluoroquinolone resistance; Efflux pump; Outer membrane protein; Chromosomal mutations.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000400008

Evaluation of Wondfo influenza A&amp;B fast test based on immunochromatography assay for rapid diagnosis of influenza A H1N1
Provedor de dados: 55
Autores: Peng,Yunping; Wu,Junlin; Liu,Xiaoyun; Wang,Jihua; Li,Wenmei.
Influenza viruses cause significant morbidity and mortality in both children and adults during local outbreaks or epidemics. Therefore, a rapid test for influenza A&amp;B would be useful. This study was conducted to evaluate the clinical performance of the Wondfo influenza A&amp;B test for rapid diagnosis of influenza A H1N1 Infection. The rapid testing assay could distinguish infection of influenza A and B virus. The reference viral strains were cultured in MDCK cells while TCID50 if the viruses were determined. The analytical sensitivity of the Wondfo kit was 100 TCID50/ml. The Wondfo kit did not show cross reactivity with other common viruses. 1928 suspected cases of influenza A (H1N1) virus infection were analyzed in the Wondfo influenza A&amp;B test...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Influenza A (H1N1); Influenza B; Fast test strip.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000200019

Trichomonas vaginalis and associated factors among women living with HIV/AIDS in Amazonas, Brazil
Provedor de dados: 55
Autores: Silva,Leila Cristina Ferreira; Miranda,Angélica Espinosa; Batalha,Rosieny Santos; Monte,Rossicléia Lins; Talhari,Sinésio.
OBJECTIVES: Our goal was to determine the prevalence of Trichomonas vaginalis and its associated factors among women living with HIV attending an AIDS clinic in Manaus, Amazonas, Brazil. METHODS: Cross-sectional study among women attending an AIDS clinic in Manaus between March and December 2010 for gynecological examination were invited to participate. Enrolled patients answered a face-to-face interview including demographic, behavioral and clinical data. They also underwent a gynecological evaluation and cervical scrape samples were collected for wet mount, Gram stain, culture and cytological analysis. A blood sample was obtained to determine TCD4+ lymphocytes and viral load. RESULTS: A total of 341 (91.2%) women participated in the study. The prevalence...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Trichomonas vaginalis; HIV; Associated factors; Amazonas.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000600012

Microbial contamination of single-and multiple-dose vials after opening in a pulmonary teaching hospital
Provedor de dados: 55
Autores: Baniasadi,Shadi; Dorudinia,Atosa; Mobarhan,Mandana; Gamishan,Masoumeh Karimi; Fahimi,Fanak.
OBJECTIVES: Intravenous therapy is a complex procedure usually requiring the preparation of the medication in the clinical area before administration to the patient. Breaches in aseptic technique may result in microbial contaminations of vials which is a potential cause of different avoidable infections. We aimed to investigate the prevalence and pattern of microbial contamination of single- and multiple-dose vials in the largest pulmonary teaching hospital in Iran. METHODS: In a period of 2 months, opened single- and multiple-dose vials from different wards were sampled by a pharmacist. The name of the medication, ward, labeling of the vials, the date of opening, and storing temperature were recorded for each vial. Remained contents of each vial were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hospital; Infection control; Injection; Intravenous.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000100011

Prevalence of human immunodeficiency virus/hepatitis C virus co-infection in Brazil and associated factors: a review
Provedor de dados: 55
Autores: Kuehlkamp,Valdete Meurer; Schuelter-Trevisol,Fabiana.
The hepatitis C virus and human immunodeficiency virus share the same transmission routes, which makes co-infection an unfavorable condition for the natural history of both viral diseases. In this context, it should be highlighted that the knowledge of the extent of co-infection and associated risk factors is a vital tool for prevention and control over infectious diseases. The aim of this study was to review the literature, seeking to examine the prevalence of human immunodeficiency virus/hepatitis C virus co-infection reported in studies conducted in Brazil, and identify the main risk factors associated with co-infection. The electronic search was conducted in the Medline, Lilacs and SciELO databases. The following keywords were used: human...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: HIV; Hepatitis C; Co-infection; Brazil.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000400012

Direct detection of blaOXA-23 gene from endotracheal aspirates by real time PCR
Provedor de dados: 55
Autores: Brust,Flávia R.; Massi,Lisandra; Cantarelli,Vlademir V.; Zavascki,Alexandre P.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000400018

Rabies in humans and non-human in the state of Pará, Brazilian Amazon
Provedor de dados: 55
Autores: Fernandes,Marcus Emanuel Barroncas; Costa,Lanna Jamile Corrêa da; Andrade,Fernanda Atanaena Goncalves de; Silva,Lucila Pereira.
We evaluate the relationship of positive cases of rabies with the continuing expansion of livestock production, and analyse the trends of this zoonosis in human population in the state of Pará, Brazilian Amazon. The distribution of rabies cases was recorded between 1999 and 2004. Of 148 cases of rabies, 21% were in humans and 79% in non-human mammals. The rapid growth in livestock numbers seems to be associated with the increase of positive cases in bovine livestock transmitted by vampire bats. This idea is supported by positive and significant relationship of both events in time (p &lt; 0.01), but failed when spatial distribution among regions of the state was considered. However, rabies cases tend to occur toward the northeastern of the state of Pará,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brazilian Amazon; Humans and non-humans; Lyssavirus; Rabies.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000200020

Response to the complete hepatitis B vaccine regimen in infants under 12 months of age: a case series
Provedor de dados: 55
Autores: Miralha,Alexandre Lopes; Malheiro,Adriana; Miranda,Angélica Espinosa; Rutherford,George Williams; Alecrim,Maria das Graças Costa.
OBJECTIVES: Describing rates of seroconversion and its associated factors in a series of Brazilian infants following the final dose of the vaccine at 6 months of age. METHODS: Peripheral blood samples were collected after the third dose of the vaccine for the detection of anti-hepatitis B surface antibodies among infants of 7-12 months of age. We measured the association between seroconversion and birthweight, gestational age, time since administration of the vaccine in the maternity hospital and whether or not testing for hepatitis B surface antigen had been performed during pregnancy. RESULTS: We examined 40 infants. The mean birthweight was 2787 g (standard deviation = 853 g) and mean gestational age was 37.5 (standard deviation = 3.08) weeks. The...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Newborn infant; Prematurity; Hepatitis B vaccine; Seroconversion.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000100013

Association between vitamin B12 level and anti-parietal cells and anti-intrinsic factor antibodies among adult Jordanian patients with Helicobacter pylori infection
Provedor de dados: 55
Autores: Ayesh,Mahmoud H.; Jadalah,Khaled; Awadi,Eiman Al; Alawneh,Khaldoon; Khassawneh,Basheer.
OBJECTIVE: Evaluate the association of Helicobacter pylori infection with anti-parietal cell antibodies (APCA) and anti-intrinsic factor antibodies (AIFA) and their impact on vitamin B12 serum level. PATIENTS AND METHODS: One hundred patients (M/F: 43/57; age 46.5 ± 17.5 years) who underwent upper gastrointestinal endoscopy at King Abdullah University Hospital, Irbid, Jordan were enrolled in the study. The patients were grouped as H. pylori-infected (n = 81) or H. pylori negative (n = 19) by histopathological examination. Fasting serum vitamin B12 levels, antiparietal cell antibodies and anti-intrinsic factor antibodies for patients and controls were determined. RESULTS: Anti-parietal cell antibodies and anti-intrinsic factor antibodies were positive in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vitamin B12; Anti-parietal cell antibodies; Anti-intrinsic factor antibodies; H. pyloriby.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000600001

Tuberculosis associated with transient hemolytic anemia responsive to tuberculosis chemotherapy: a case report
Provedor de dados: 55
Autores: Safe,Izabella Picinin; O'brien,Connor; Ferreira,Fernando Rogério Lara; Souza,Márcia Lidiane Vasconcelos Dias de; Ramasawmy,Rajendranath.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000100021

Epidemiologic profile of Streptococcus agalactiae colonization in pregnant women attending prenatal care in a city of southern of Brazil
Provedor de dados: 55
Autores: Kruk,Cássia Rejane; Feuerschuette,Otto Henry May; Silveira,Sheila Koetker da; Cordazo,Mayara; Trapani Júnior,Alberto.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000600020

Related factors to atazanavir plasma levels in a cohort of HIV positive individuals with undetectable viral load
Provedor de dados: 55
Autores: Luz,Ana Júlia; Poeta,Júlia; Linden,Rafael; Antunes,Marina Venzon; Caminha,Luiza Isola; Sprinz,Eduardo.
OBJECTIVE: To evaluate the factors associated with plasma concentrations of atazanavir (ATV) in a cohort of well-controlled HIV infected subjects (undetectable viremia). Design: Cross-sectional study where 69 subjects were consecutively enrolled between April and November, 2011. METHODS: Patients had to be on atazanavir for at least six months, undetectable viral load for a period equal to or longer than 12 months, T CD4+ lymphocyte count higher than 200 cells/mm³, and aged between 18 years and 70 years old. Exclusion criteria were pregnancy, any neurologic disease, active opportunistic disease, hepatitis or cancer. Atazanavir plasma levels were measured by ultra-performance liquid chromatography. RESULTS AND DISCUSSION: Overall, 54 patients (mean age of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atazanavir; Plasma levels; Drug concentration; Ritonavir; Lipid profile.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000600006

Intraventricular mass in a patient with AIDS
Provedor de dados: 55
Autores: Sousa,Alexandra; Araújo,Vítor; Maciel,Maria Júlia.
Tipo: Info:eu-repo/semantics/article
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000100020

Leptospirosis in elderly patients
Provedor de dados: 55
Autores: Gancheva,Galya Ivanova.
Leptospirosis is a re-emerging zoonosis with broad clinical spectrum and high mortality in severe forms. The aim of this study was to analyze clinical manifestations, laboratory findings, epidemiological data, and management in elderly patients with leptospirosis. Toward that end, we performed a descriptive analysis of 15 leptospirosis elderly cases (age 60-78 years) treated at the Clinic of Infectious Diseases of University Hospital - Pleven (1976-2012). Patients were serologically confirmed by microscopic agglutination test. Twelve cases (80%) presented with the severe form of leptospirosis. Co-morbidity (hypertonic diseases, chronic pulmonary diseases, chronic alcohol abuse, and diabetes) was registered in 13 cases. All cases had fever, oliguria,...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Acute renal failure; Age; Leptospirosis; Outcome.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000500012

Gestational toxoplasmosis in Paraná State, Brazil: prevalence of IgG antibodies and associated risk factors
Provedor de dados: 55
Autores: Lopes-Mori,Fabiana Maria Ruiz; Mitsuka-Breganó,Regina; Bittencourt,Laura Helena França de Barros; Dias,Renata Cristina Ferreira; Gonçalves,Daniela Dib; Capobiango,Jaqueline Dario; Reiche,Edna Maria Vissoci; Morimoto,Helena Kaminami; Freire,Roberta Lemos; Navarro,Italmar Teodorico.
The aim of the present study was to verify the association between seropositivity for IgG anti-Toxoplasma gondii antibodies and social, economic and environmental variables of pregnant women attending the public health centers of Paraná, Brazil. From January 2007 to July 2010, 2226 pregnant women were interviewed and detection of anti-T. gondii specific IgG and IgM antibodies was performed by chemiluminescence test. Seropositivity for anti-T. gondii IgG was observed in 1151 (51.7%) pregnant women, 29 of which (1.3%) presented IgM reagent with IgG of high avidity. The variables associated with the presence of IgG were residency in the rural area, more than one pregnancy, less than or equal to eight years schooling, low per capita income, age group, raw or...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Seroepidemiology; Prevalence; Toxoplasmosis; Pregnancy.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000400004

Adherence to antiretroviral prophylaxis during early infancy in Latin America
Provedor de dados: 55
Autores: Hofer,Cristina B.; Harris,D. Robert; Saavedra,Mariza C.; Haberer,Jessica E.; Romeiro,Juliana; Mussi-Pinhata,Marisa M.; Stankievich,Erica; Gomes,Ivete M.; Kreitchmann,Regis; Read,Jennifer S.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000400019

Distribution of serotypes and evaluation of antimicrobial susceptibility among human and bovine Streptococcus agalactiae strains isolated in Brazil between 1980 and 2006
Provedor de dados: 55
Autores: Pinto,Tatiana Castro Abreu; Costa,Natália Silva; Souza,Aline Rosa Vianna; Silva,Ligia Guedes da; Corrêa,Ana Beatriz de Almeida; Fernandes,Flavio Gimenis; Oliveira,Ivi Cristina Menezes; Mattos,Marcos Corrêa de; Rosado,Alexandre Soares; Benchetrit,Leslie Claude.
Streptococcus agalactiae is a common agent of clinical and subclinical bovine mastitis and an important cause of human infections, mainly among pregnant women, neonates and nonpregnant adults with underlying diseases. The present study describes the genetic and phenotypic diversity among 392 S. agalactiae human and bovine strains isolated between 1980 and 2006 in Brazil. The most prevalent serotypes were Ia, II, III and V and all the strains were susceptible to penicillin, vancomycin and levofloxacin. Resistance to clindamycin, chloramphenicol, erythromycin, rifampicin and tetracycline was observed. Among the erythromycin resistant strains, mefA/E, ermA and, mainly, ermB gene were detected, and a shift of prevalence from the macrolide resistance phenotype...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Streptococcus agalactiae; Pulsed field gel electrophoresis; Epidemiology; Serotyping; Resistance profile.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000200003

Molecular epidemiology of CTX-M producing Enterobacteriaceae isolated from bloodstream infections in Rio de Janeiro, Brazil: emergence of CTX-M-15
Provedor de dados: 55
Autores: Seki,Liliane Miyuki; Pereira,Polyana Silva; Conceição,Magda de Souza; Souza,Maria José; Marques,Elizabeth Andrade; Carballido,Jupira Miron; Carvalho,Maria Elisabeth Serqueira de; Assef,Ana Paula D'Alincourt Carvalho; Asensi,Marise Dutra.
OBJECTIVE: The present studywas designed to evaluate the molecular epidemiology of CTX-M producing Klebsiella pneumoniae, Enterobacter cloacae and Escherichia coli isolated from bloodstream infections at tertiary care hospitals in the State of Rio de Janeiro, Brazil. MATERIAL AND METHODS: A total of 231 nonduplicate Enterobacteriaceae were isolated from five Brazilian hospitals between September 2007 and September 2008. The antimicrobial susceptibility testing was performed by disk diffusion method according to the Clinical Laboratory Standard Institute. Isolates showing resistance to third-generation cephalosporins were screened for ESBL activity by the double-disk synergy test. The presence of blaCTX-M , blaCTX-M-15 and blaKPC genes was determined by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bloodstream infections; Enterobacteriaceae; CTX-M-15; PFGE; KPC; Brazil.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000600003

Nasal carriage of methicillin-resistant Staphylococcus aureus among students at a Louisiana medical university
Provedor de dados: 55
Autores: Bellows,Charles; Smith,Alison; Wheeler,Jean; Morici,Lisa.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000100025

Prognostic indicators in bacterial meningitis: a case-control study
Provedor de dados: 55
Autores: Mendizabal,Maria de Fátima Magalhães Acioly; Bezerra,Phelipe Cunha; Guedes,Diego Lins; Cabral,Diogo Buarque Cordeiro; Miranda-Filho,Demócrito de Barros.
This was a case-control study to identify prognostic indicators of bacterial meningitis in a reference hospital in Pernambuco/Brazil. The data were collected from charts of 294 patients with bacterial meningitis between January 2000 and December 2004. Variables were grouped in biological, clinical, laboratory and etiologic agent/treatment. Variables selected in each step were grouped and adjusted for age. Two models were created: one containing clinical variables (clinical model) and other containing laboratory variables (laboratory model). In the clinical model the variables associated with death due to bacterial meningitis were dyspnea (p = 0.006), evidence of shock (p = 0.051), evidence of altered mental state (p = 0.000), absence of headache (p =...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacterial meningitis; Prognostic indicators; Case-control study.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000500005

Pulmonary aspergillosis in an immunocompetent patient
Provedor de dados: 55
Autores: Chien,Wei-Lun; Tseng,Jeng-Sen.
Tipo: Info:eu-repo/semantics/article
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000300011

Chloroquine sensitizes biofilms of Candida albicans to antifungal azoles
Provedor de dados: 55
Autores: Shinde,Ravikumar Bapurao; Raut,Jayant Shankar; Chauhan,Nitin Mahendra; Karuppayil,Sankunny Mohan.
Biofilms formed by Candida albicans, a human pathogen, are known to be resistant to different antifungal agents. Novel strategies to combat the biofilm associated Candida infections like multiple drug therapy are being explored. In this study, potential of chloroquine to be a partner drug in combination with four antifungal agents, namely fluconazole, voriconazole, amphotericin B, and caspofungin, was explored against biofilms of C. albicans. Activity of various concentrations of chloroquine in combination with a particular antifungal drug was analyzed in a checkerboard format. Growth of biofilm in presence of drugs was analyzed by XTT-assay, in terms of relative metabolic activity compared to that of drug free control. Results obtained by XTT-metabolic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antifungal; Biofilm; Candida albicans; Combination; Chloroquine; Drug resistance.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000400002

Susceptibility rates in Latin American nations: report from a regional resistance surveillance program (2011)
Provedor de dados: 55
Autores: Jones,Ronald N.; Guzman-Blanco,Manuel; Gales,Ana C.; Gallegos,Belisario; Castro,Aura Lucia Leal; Martino,Marines Dalla Valle; Vega,Silvio; Zurita,Jeannete; Cepparulo,Mario; Castanheira,Mariana.
OBJECTIVE: To establish a resistance (R) surveillance program monitoring antimicrobial susceptibility patterns in Latin America (LATAM; Argentina [ARG], Brazil [BRA], Chile, Colombia [CBA], Costa Rica, Ecuador [ECU], Guatemala [GUA], Mexico [MEX], Panama [PAN], Peru, and Venezuela [VEN]). METHODS: In 2011, 4979 organisms were collected from 11 nations (20 laboratories) for susceptibility testing in a central laboratory design. Antimicrobials were tested by CLSI methods and results interpreted by CLSI and EUCAST breakpoints. Most common Gram-positive (Staphylococcus aureus [SA, 921], other staphylococci [CoNS; 299], enterococci [218], Streptococcus pneumoniae [SPN; 182], β-haemolytic streptococci [115]) and Gram-negative (E. coli [EC; 644], Klebsiella spp....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Latin America; Surveillance; Resistance; ESBL; Β-Lactamases.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000600009

"Catarrhal physiognomy" and Koplik's spots
Provedor de dados: 55
Autores: Li,Zhengxiao; Zhao,Wenxue; Ji,Fanpu.
Tipo: Info:eu-repo/semantics/article
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000400017

Association between toll-like receptor2 Arg677Trp and 597T/C gene polymorphisms and pulmonary tuberculosis in Zahedan, Southeast Iran
Provedor de dados: 55
Autores: Naderi,Mohammad; Hashemi,Mohammad; Hazire-Yazdi,Leylisadat; Taheri,Mohsen; Moazeni-Roodi,Abdolkarim; Eskandari-Nasab,Ebrahim; Bahari,Gholamreza.
BACKGROUND: It is well known that toll-like receptor 2 (TLR2) mediates responses of both innate and adaptive immunity to microbial pathogen, including mycobacteria. Single-nucleotide polymorphisms (SNPs) in the TLR2 gene that impair its function may be associated with the development of pulmonary tuberculosis (PTB). The aim of this study was to evaluate the possible association between TLR2 Arg677Trp and 597T/C polymorphisms and PTB in a sample of Iranian population. MATERIALS AND METHODS: This case-;control study was performed on 174 PTB and 177 healthy subjects. Tetra amplification refractory mutation system-polymerase chain reaction (TARMS-PCR) was used to detect the SNPs. RESULTS: There was no significant difference in the polymorphism of Arg677Trp of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tuberculosis; TLR2; Single nucleotide polymorphism.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000500002

A case of miltefosine responsive pleomorphic post kala-azar dermal leishmaniasis
Provedor de dados: 55
Autores: Pal,Dipankar; Naskar,Arindam; Ghosh,Manab Kumar.
Tipo: Info:eu-repo/semantics/article
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000500016

Changes in Staphylococcus aureus susceptibility across Latin America between 2004 and 2010
Provedor de dados: 55
Autores: Garza-González,Elvira; Dowzicky,Michael Joseph.
The Tigecycline Evaluation and Surveillance Trial is a global surveillance study monitoring the efficacy of tigecycline and comparators against clinically important pathogens. Between 2004 and 2010, 3126 isolates of Staphylococcus aureus were collected from 66 centers in 13 countries in Latin America; of these, 1467 (46.9%) were resistant to methicillin. The main contributors of S. aureus isolates were Mexico (n = 846), Argentina (n = 740), and Colombia (n = 445). The methicillin-resistant S. aureus rate was greater than 50% in five countries, the highest reported in Puerto Rico (73.9%). Methicillin-resistant S. aureus rates across Latin America ranged from 40.1% to 50.6% over the study period. All S. aureus isolates were susceptible to linezolid and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tigecycline; Antimicrobial surveillance; Latin America; Staphylococcus aureus.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000100003

Health related quality of life among patients with chronic hepatitis C: a cross-sectional study of sociodemographic, psychopathological and psychiatric determinants
Provedor de dados: 55
Autores: Fábregas,Bruno Cópio; Ávila,Renata Eliane de; Faria,Marjore Novaes; Moura,Alexandre Sampaio; Carmo,Ricardo Andrade; Teixeira,Antonio Lúcio.
INTRODUCTION: Chronic hepatitis C virus infection patients have higher rates of psychiatric disorders than the general population. Chronic hepatitis C virus infection is known to be associated with impaired health related quality of life. To our knowledge, there is no previous research of health related quality of life in chronic hepatitis C patients that combined structured psychiatric interview and careful psychopathological evaluation, including depression, anxiety and fatigue instruments. The aim of this study was to evaluate health related quality of life of chronic hepatitis C patients and to investigate the association with sociodemographic, psychopathological and psychiatric factors. MATERIALS AND METHODS: Eighty-one individuals with chronic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Quality of life; WHOQOL-BREF; Hepatitis C; Depression; Fatigue.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000600002

False-positive results in screening for metallo-β-lactamase are observed in isolates of Acinetobacter baumannii due to production of oxacilinases
Provedor de dados: 55
Autores: Martins,Andreza F.; Borges,Aline; Pagano,Mariana; Dalla-Costa,Libera Maria; Barth,Afonso L.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000400021

Prevalence and characters of Entamoeba histolytica infection in Saudi infants and children admitted with diarrhea at 2 main hospitals at south Jeddah: a re-emerging serious infection with unusual presentation
Provedor de dados: 55
Autores: Hegazi,Moustafa Abdelaal; Patel,Tabarek Ahmed; El-Deek,Basem Salama.
In this study, Entamoeba histolytica had high prevalence and unusual presentation by affecting high proportion of infants under 1 year; severe clinical manifestations, and laboratory findings that were known to be usually encountered in invasive amebiasis as significant leukocytosis for age, neutrophilic leukocytosis for age, and positive C-reactive protein were found among more than 50% of admitted Saudi infants and children with E. histolytica infection in our locality. E. histolytica can be a re-emerging serious infection when it finds favorable environmental conditions and host factors which are mainly attributed to inadequate breastfeeding in this study. This may occur in any other area of the world with the same risk factors, so we must be ready to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Entamoeba histolytica; Saudi; Infants; Children.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000100006

High rate of virologic suppression with darunavir/ritonavir plus optimized background therapy among highly antiretroviral-experienced HIV-infected patients: results of a prospective cohort study in São Paulo, Brazil
Provedor de dados: 55
Autores: Vidal,José Ernesto; Song,Alice Tung Wan; Matos,Maria Laura; Bartmann,Daniel; Anjos,Guilherme dos; Miranda,Érique José Peixoto de; Freitas,Ângela Carvalho; Dalben,Mirian de Freitas; Santana,Claudinei; Segurado,Aluísio Cotrim; Barreto,Cláudia Cortese; Hernández,Adrián Vladimir.
OBJECTIVES: To assess the virologic and immunological response of darunavir/ritonavir plus optimized background therapy in highly antiretroviral-experienced HIV-infected patients in Brazil. METHODS: Prospective cohort study carried out in a tertiary center in Sao Paulo, Brazil. Three-class antiretroviral-experienced patients with confirmed virologic failure began darunavir/ritonavir plus optimized background therapy (nucleoside/tide reverse transcriptase inhibitors ± raltegravir ± enfuvirtide ± maraviroc) after performing a genotypic resistance assay. Clinical evaluation and laboratory tests were collected at baseline and at weeks 12, 24, and 48. Multivariate analysis was performed to identify predictors of virologic response at 48 weeks. RESULTS:...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Highly active antiretroviral therapy; Darunavir; Acquired immunodeficiency syndrome; Developing countries.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000100007

Association between insulin resistance and sustained virologic response in hepatitis C treatment, genotypes 1 versus 2 and 3: systematic literature review and meta-analysis
Provedor de dados: 55
Autores: Laurito,Marcela Pezzoto; Parise,Edison Roberto.
BACKGROUND/AIMS: Controversial results have been found in literature for the association between insulin resistance and sustained virologic response to standard chronic hepatitis C treatment. This study aims to provide a systematic literature review with meta-analysis, in order to evaluate if insulin resistance interferes with sustained virologic response in patients infected by the HCV genotype 1 versus HCV genotypes 2 and 3, undergoing treatment with interferon and ribavirin or pegylated interferon and ribavarin. METHODS: Systematic search was performed on main electronic databases until May 2012. Primary outcome was sustained virologic response, defined as undetectable levels of HCVRNA six months after the end of treatment. Meta-analytic measure was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hepatitis C; Insulin resistance; Genotype; Sustained virologic response.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000500008

Antimicrobials and renal failure in neutropenic patients
Provedor de dados: 55
Autores: França,Monique Sedlmaier; Lima,Stella Sala Soares; Duclou,Caroline Naback; Goulart,Eugênio Marcos Andrade; Romanelli,Roberta Maia de Castro.
Antimicrobial treatment is often indicated to neutropenic patients. Although renal failure is a common complication of many antibiotics, no information could be found in the literature defining which are the best screening criteria for detecting renal injury. In this paper, the authors aim to assess the progress to renal failure in neutropenic patients on antimicrobial use and to compare different diagnostic criteria of renal failure in association to antimicrobial agents used. This is a cohort study conducted from February to August 2006 at the Hospital das Clínicas of the Universidade Federal de Minas Gerais, which included patients with neutropenia and antimicrobial therapy for the treatment of Healthcare Associated Infections notified by the Hospital...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Neutropenia; Renal insufficiency; Antimicrobial agents.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000400016

Conventional serological performance in diagnosis of Chagas' disease in southern Brazil
Provedor de dados: 55
Autores: Araújo,Anelise Bergmann; Berne,Maria Elisabeth Aires.
Results of Chagas' disease diagnosis show disagreement. The aim of this study was to compare commercial tests for Chagas' disease serodiagnosis in southern Brazil. A total of 161 samples were evaluated. Three enzyme-linked immunosorbent assays, one indirect hemagglutination and one indirect immunofluorescence were assessed. Trypomastigote excreted-secreted antigen-blot was a confirmatory method. From 161 samples, 65.84% were positive in all tests, while 34.16% presents mismatch result in at least one of the tests. All techniques tested presented false-positive and/or false-negative results as follows: Enzyme-linked immunosorbent assay 1 had more false-positive results (lower specificity), indirect immunofluorescence had the highest rate of false-negative...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Trypanosoma cruzi; Chagas' disease; Serodiagnosis; Immunoassays.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000200010

Strategies to reduce mortality and morbidity due to AIDS-related cryptococcal meningitis in Latin America
Provedor de dados: 55
Autores: Vidal,Jose E.; Oliveira,Augusto C. Penalva de; Dauar,Rafi F.; Boulware,David R.
Latin America is the region with the third most AIDS-related cryptococcal meningitis infections globally. Highly active antiretroviral therapy (HAART) has reduced the number of infections; however, the number of deaths and the case-fatality rate continues to be unacceptable. In this review, we focus on the burden of AIDS-related cryptococcosis in Latin America and discuss potential strategies to reduce early mortality from Cryptococcus. In this review, we highlight the importance of: (1) earlier HIV diagnosis and HAART initiation with retention-in-care to avoid AIDS; (2) pre-HAART cryptococcal antigen (CRAG) screening with preemptive fluconazole treatment; (3) better diagnostics (e.g. CRAG testing); and (4) optimal treatment with aggressive management of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cryptococcal meningitis; Cryptococccosis; Epidemiology; Diagnosis; Treatment; Mortality; Latin America.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000300008

An unusual cause of bilateral scrotal abscess in a preterm infant: Candida albicans
Provedor de dados: 55
Autores: Cetinkaya,Merih; Buyukkale,Gokhan; Payasli,Muge; Ozbek,Sibel; Kavuncuoglu,Sultan.
Acute scrotal abscess is a rare condition in neonates. Most of these abscesses were reported to be unilateral and caused by Staphylococcus and Salmonella spp. Herein, we report a bilateral scrotal abscess in a preterm infant and Candida albicans was isolated from the scrotal fluid culture. To our knowledge, this is the first bilateral scrotal abscess in a preterm infant caused by C. albicans. Therefore, this organism must be suspected in differential diagnosis of acute scrotal abscess in neonates, especially in preterm infants.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Scrotal abscess; Neonate; Preterm infant; Candida albicans.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000200023

Clinical and microbiological observational study on AmpC β-lactamase-producing Enterobacteriaceae in a hospital of Nepal
Provedor de dados: 55
Autores: Baral,Pankaj; Neupanea,Sanjiv; Shresthac,Basudha; Ghimirea,Kashi Ram; Marasinia,Bishnu Prasad; Lekhaka,Binod.
Limited information is available regarding AmpC β-lactamase (ABL)-producing Enterobacteriaceae compared to extended-spectrum β-lactamase-producing enterobacteria. Since ABL-producing organisms are often resistant to multiple antimicrobial agents, therapeutic options against these pathogens are limited. Among 230 clinical Enterobacteriaceae isolates, 64 (27.8%) were found to produce ABL in our study. Escherichia coli (83.9%) was a predominant pathogen, followed by Citrobacter freundii (5.2%). A significant proportion of ABL-producing isolates (81.3%) were found to be multidrug resistant against commonly used antibiotics. Univariate analysis showed that prior history of taking antibiotics (odds ratio [OR], 5.278; confidence interval [CI], 2.838-9.817; p &lt;...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: AmpC β-lactamase; Enterobacteriaceae; Antibiotic resistance.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000200022

Purpura fulminans: an unusual complication of malaria
Provedor de dados: 55
Autores: Sharma,Alka; Sharma,Vishal.
Tipo: Info:eu-repo/semantics/article
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000600015

Successful use of gentamycin as an antibiotic prophylaxis regimen to reduce the rate of healthcare-associated infections after renal transplantation
Provedor de dados: 55
Autores: Abboud,Cely S.; Bergamasco,Maria Daniela; Sousa,Ercilia Evangelista de; Zandonadi,Eliana de Cássia; Cortez,Doralice.
At our institution, we observed an increase in the incidence of healthcare-associated infections (HAI) due to Gram-negative bacilli, including three cases of carbapenem-resistant Klebsiella pneumoniae, among patients who underwent renal transplantation. In addition to strengthening infection control measures, we chose to add gentamycin to the antibiotic prophylaxis regimen of patients undergoing renal transplantation. We assessed the number of HAI occurring within 30 days of renal transplantation during two time periods: (1) the preintervention period, between September 2009 and June 2010, and (2) the post-intervention period, between July 2010 and April 2011. The intervention consisted of the addition of gentamycin to the surgical antibiotic prophylaxis...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Renal transplantation; Antibiotic prophylaxis; Gentamycin; Health-care associated infections.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000200021

Paracoccidioidomycosis: evaluation of treatment and patient profile
Provedor de dados: 55
Autores: Del Fiol,Fernando Sá; Oliveira,Sara de Jesus; Barberato-Filho,Silvio; Junqueira,Fabio Miranda; Rocha,Maria Carolina Pereira da; Toledo,Maria Inês de.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000600019

A simple, rapid and economic method for detecting multidrug-resistant tuberculosis
Provedor de dados: 55
Autores: Wang,Xia; Jiao,Junhua; Xu,Weihua; Chai,Xiaoyan; Li,Zhenyun; Wang,Qingjiang.
OBJECTIVE: To evaluate multiplex allele specific polymerase chain reaction as a rapid molecular tool for detecting multidrug-resistant tuberculosis. METHODS: Based on drug susceptibility testing, 103 isolates were multidrug-resistant tuberculosis and 45 isolates were sensitive to isonicotinylhydrazine and rifampin. Primers were designed to target five mutations hotspots that confer resistance to the first-line drugs isoniazid and rifampin, and multiplex allele specific polymerase chain reaction was performed. Whole-genome sequencing confirmed drug resistance mutations identified by multiplex allele specific polymerase chain reaction. RESULTS: DNA sequencing revealed that 68.9% of multidrug-resistant strains have point mutations at codon 315 of the katG...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mycobacterium tuberculosis; Multiplex allele specific polymerase chain reaction (MAS-PCR).
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000600008

Syphilis and HIV-1 among parturient women in Salvador, Brazil: low prevalence of syphilis and high rate of loss to follow-up in HIV-infected women
Provedor de dados: 55
Autores: Nóbrega,Isabella; Dantas,Paula; Rocha,Priscila; Rios,Isabela; Abraão,Marcos; M. Netto,Eduardo; Brites,Carlos.
BACKGROUND: The occurrence of syphilis and HIV-1 infections during pregnancy are major risks to the fetus due to mother-to-child transmission (MTCT). OBJECTIVES: To determine peripartum seroprevalence and risk factors of syphilis and HIV-1 infection among pregnant women in Salvador, Brazil, and the rate of HIV-1 MTCT. METHODS:Cross-sectional study of pregnant women who were admitted for delivery in a reference maternity hospital between May 2008 and March 2009 was conducted. Women were screened for HIV-1 infection and syphilis, and interviewed regarding demographic, behavioral and obstetric data. Newborns to HIV-infected mothers were tested by b-DNA and DNA-PCR to detect HIV-1. RESULTS: A total 3300/8516 women were evaluated. Mean age was 25.8 ± 7.3 years....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Human immunodeficiency virus; Syphilis; Seroprevalence; Risk factors; Parturient; Pregnant; Mother-to-child transmission; Brazil.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000200012

Methicillin-resistant and methicillin-susceptible community-acquired Staphylococcus aureus infection among children
Provedor de dados: 55
Autores: Gomes,Renata Tavares; Lyra,Ticiana Goyanna; Alves,Noraney Nunes; Caldas,Renilza Menezes; Barberino,Maria-Goreth; Nascimento-Carvalho,Cristiana Maria.
Methicillin-resistant Staphylococcus aureus has emerged as a pathogen associated with community-acquired infections worldwide. We report the spectrum of community-acquired S. aureus infections and compare the patients infected with methicillin-susceptible or methicillin-resistant strains among patients aged &lt;20 years. Overall, 90 cases of community acquired S. aureus were detected in an 11-year period. Clinical and microbiological data were registered. Fifty-nine (66%) patients were male and the median age was two years. The majority (87%) of the patients were hospitalized and chronic underlying illnesses were detected in 27 (30%) cases. Overall, 34 (37.8%) patients had skin/soft tissue infections and 56 (62.2%) patients had deep-seated infection. Four...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antibacterial agents; Community-acquired infection; Methicillin resistance; Staphylococcal infections; Staphylococcus aureus antimicrobial; Resistance.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000500010

Occurrence of hepatitis B virus genotype B and B + C mixed infections in Chennai, South India
Provedor de dados: 55
Autores: Koli,Suneeta; Radhakrishnan,Anand Narayanan Pallipurath; Jacob,Melvin; Vadivoo,Selvaraj; Purushothaman,Girish Kumar Chethrapilly.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000500018

Zoonotic potential of multidrug-resistant extraintestinal pathogenic Escherichia coli obtained from healthy poultry carcasses in Salvador, Brazil
Provedor de dados: 55
Autores: Lima-Filho,José Vitor; Martins,Liliane Vilela; Nascimento,Danielle Cristina de Oliveira; Ventura,Roberta Ferreira; Batista,Jacqueline Ellen Camelo; Silva,Ayrles Fernanda Brandão; Ralph,Maria Taciana; Vaz,Renata Valença; Rabello,Carlos Boa-Viagem; Silva,Isabella de Matos Mendes da; Evêncio-Neto,Joaquim.
The zoonotic potential to cause human and/or animal infections among multidrug-resistant extraintestinal pathogenic Escherichia coli from avian origin was investigated. Twenty-seven extraintestinal pathogenic E. coli isolates containing the increased survival gene (iss) were obtained from the livers of healthy and diseased poultry carcasses at two slaughterhouses in Salvador, northeastern Brazil. The antimicrobial resistance-susceptibility profiles were conducted with antibiotics of avian and/or human use by the standardized disc-diffusion method. Antimicrobial resistance was higher for levofloxacin (51.8%), amoxicillin/clavulanic acid (70.4%), ampicillin (81.5%), cefalotin (88.8%), tetracycline (100%) and streptomycin (100%). The minimum inhibitory...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: ExPEC; MDR strains; Increased survival gene; Experimental infections.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000100009

Knowledge about viral hepatitis among participants of Gay Pride Event in Brazil
Provedor de dados: 55
Autores: Delvaux,Nathália; Paula,Vanessa S. de; Espírito-Santo,Márcia P. do; Silva,Elisangela F. da; Miguel,Juliana C.; Oliveira,Jaqueline C. de; Silva,Alexandre S. da; Vieira,Yasmine R.; Lampe,Elisabeth; Villar,Livia M.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000300012

Immunoglobulin levels, cytology and microbiologic investigations of broncho-alveolar lavage in children with cystic fibrosis
Provedor de dados: 55
Autores: Petrova,Guergana; Strateva,Tanya; Ulevinov,Nikolay; Perenovska,Penka.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000200027

Molecular and clinical evaluation of the acute human parvovirus B19 infection: comparison of two cases in children with sickle cell disease and discussion of the literature
Provedor de dados: 55
Autores: Slavov,Svetoslav Nanev; Kashima,Simone; Silva-Pinto,Ana Cristina; Amarilla,Alberto Anastacio; Aquino,Victor Hugo; Covas,Dimas Tadeu.
Human parvovirus B19 is a well-known cause of severe conditions in patients with sickle cell disease, but the molecular mechanisms of the infection are insufficiently understood. The different clinical outcome of the acute parvovirus B19 infection in two pediatric patients with sickle cell disease has been examined. One of them developed life-threatening condition requiring emergency transfusions, while the other had asymptomatic infection, diagnosed occasionally. Both cases had high viral load and identical subgenotype, indicating that the viral molecular characteristics play a minimal role in the infection outcome.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Human parvovirus B19; Viral load; Aplastic crisis; Subgenotypes.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000100017

BAFF promotes regulatory T-cell apoptosis and blocks cytokine production by activating B cells in primary biliary cirrhosis
Provedor de dados: 56
Autores: Zhang,Bo; Hu,Mintao; Zhang,Peng; Cao,Hong; Wang,Yongzhen; Wang,Zheng; Su,Tingting.
Primary biliary cirrhosis (PBC) is a chronic and slowly progressive cholestatic liver disease of autoimmune etiology. A number of questions regarding its etiology are unclear. CD4+CD25+ regulatory T cells (Tregs) play a critical role in self-tolerance and, for unknown reasons, their relative number is reduced in PBC patients. B-cell-activating factor (BAFF) is a key survival factor during B-cell maturation and its concentration is increased in peripheral blood of PBC patients. It has been reported that activated B cells inhibit Treg cell proliferation and there are no BAFF receptors on Tregs. Therefore, we speculated that excessive BAFF may result in Treg reduction via B cells. To prove our hypothesis, we isolated Tregs and B cells from PBC and healthy...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Primary biliary cirrhosis; Regulatory T cells; BAFF; B cells; Bezafibrate.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000500433

Comparison of the neurobiological effects of attribution retraining group therapy with those of selective serotonin reuptake inhibitors
Provedor de dados: 56
Autores: Wang,C.; Zhang,N.; Zhang,Y.L.; Zhang,J.; Yang,H.; Timothy,T.C.
The aim of this study was to compare the effectiveness of attribution retraining group therapy (ARGT) with selective serotonin reuptake inhibitors (SSRIs) in the treatment of major depressive disorder (MDD), generalized anxiety disorder (GAD), and obsessive-compulsive disorder (OCD). Subjects were sequentially recruited and randomized into two groups, one receiving ARGT (n = 63) and the other SSRIs (n = 66) for 8 weeks. Fifty-four ARGT outpatients with MDD (n = 19), GAD (n = 19), and OCD (n = 16) and 55 SSRI outpatients with MDD (n = 19), GAD (n = 19), and OCD (n = 17) completed the study. All subjects were assessed using the Hamilton Depression Scale and Hamilton Anxiety Scale before and after treatment. The 10-item Yale-Brown Obsessive Compulsive Scale...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Attribution retraining group therapy; Selective serotonin reuptake inhibitors; Neurobiological effects; Serotonin; Cortisol.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000300318

Use of inflammatory molecules to predict the occurrence of fever in onco-hematological patients with neutropenia
Provedor de dados: 56
Autores: Ribeiro,A.F. Tibúrcio; Nobre,V.; Neuenschwander,L.C.; Teixeira,A.L.; Xavier,S.G.; Paula,F.D.F.; Teixeira,M.M.; Teixeira,J.C.A.; Bittencourt,H.
Febrile neutropenia remains a frequent complication in onco-hematological patients, and changes in the circulating level of inflammatory molecules (IM) may precede the occurrence of fever. The present observational prospective study was carried out to evaluate the behavior of plasma tumor necrosis factor alpha (TNF-α), soluble TNF-α I and II receptors (sTNFRI and sTNFRII), monocyte chemoattractant protein-1 [MCP-1 or chemokine (c-c motif) ligand 2 (CCL2)], macrophage inflammatory protein-1α (MIP-1α or CCL3), eotaxin (CCL11), interleukin-8 (IL-8 or CXCL8), and interferon-inducible protein-10 (IP-10 or CXCL10) in 32 episodes of neutropenia in 26 onco-hematological patients. IM were tested on enrollment and 24-48 h before the onset of fever and within 24 h of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Neutropenia; Cytokines; Oncological hematology.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000200200

Challenges in the research and development of new human vaccines
Provedor de dados: 56
Autores: Barbosa,T.; Barral-Netto,M.
The field of vaccinology was born from the observations by the fathers of vaccination, Edward Jenner and Louis Pasteur, that a permanent, positive change in the way our bodies respond to life-threatening infectious diseases can be obtained by specific challenge with the inactivated infectious agent performed in a controlled manner, avoiding the development of clinical disease upon exposure to the virulent pathogen. Many of the vaccines still in use today were developed on an empirical basis, essentially following the paradigm established by Pasteur, “isolate, inactivate, and inject” the disease-causing microorganism, and are capable of eliciting uniform, long-term immune memory responses that constitute the key to their proven efficacy. However, vaccines...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Human vaccines; Vaccine issues; Vaccine efficacy; Immunization strategies.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000200103

Early responses of the STAT3 pathway to platinum drugs are associated with cisplatin resistance in epithelial ovarian cancer
Provedor de dados: 56
Autores: Sheng,W.J.; Jiang,H.; Wu,D.L.; Zheng,J.H.
Cisplatin resistance remains one of the major obstacles when treating epithelial ovarian cancer. Because oxaliplatin and nedaplatin are effective against cisplatin-resistant ovarian cancer in clinical trials and signal transducer and activator of transcription 3 (STAT3) is associated with cisplatin resistance, we investigated whether overcoming cisplatin resistance by oxaliplatin and nedaplatin was associated with the STAT3 pathway in ovarian cancer. Alamar blue, clonogenic, and wound healing assays, and Western blot analysis were used to compare the effects of platinum drugs in SKOV-3 cells. At an equitoxic dose, oxaliplatin and nedaplatin exhibited similar inhibitory effects on colony-forming ability and greater inhibition on cell motility than cisplatin...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Epithelial ovarian cancer; Cisplatin; Oxaliplatin; Nedaplatin; STAT3.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000800650

Effect of penehyclidine hydrochloride on β-arrestin-1 expression in lipopolysaccharide-induced human pulmonary microvascular endothelial cells
Provedor de dados: 56
Autores: Zhan,J.; Xiao,F.; Zhang,Z.Z.; Wang,Y.P.; Chen,K.; Wang,Y.L.
β-arrestins are expressed proteins that were first described, and are well-known, as negative regulators of G protein-coupled receptor signaling. Penehyclidine hydrochloride (PHC) is a new anti-cholinergic drug that can inhibit biomembrane lipid peroxidation, and decrease cytokines and oxyradicals. However, to date, no reports on the effects of PHC on β-arrestin-1 in cells have been published. The aim of this study was to investigate the effect of PHC on β-arrestin-1 expression in lipopolysaccharide (LPS)-induced human pulmonary microvascular endothelial cells (HPMEC). Cultured HPMEC were pretreated with PHC, followed by LPS treatment. Muscarinic receptor mRNAs were assayed by real-time quantitative PCR. Cell viability was assayed by the methyl thiazolyl...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Penehyclidine hydrochloride; Human pulmonary microvascular endothelial cells; Β-arrestin-1.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013001201040

Characterization of bacteriophages infecting clinical isolates of Pseudomonas aeruginosa stored in a culture collection
Provedor de dados: 56
Autores: Zanetti,C.C.S.; Mingrone,R.C.C.; Kisielius,J.J.; Ueda-Ito,M.; Pignatari,A.C.C.
Some clinical isolates of Pseudomonas aeruginosa stored in our culture collection did not grow or grew poorly and showed lysis on the culture plates when removed from the collection and inoculated on MacConkey agar. One hypothesis was that bacteriophages had infected and killed those clinical isolates. To check the best storage conditions to maintain viable P. aeruginosa for a longer time, clinical isolates were stored at various temperatures and were grown monthly. We investigated the presence of phage in 10 clinical isolates of P. aeruginosa stored in our culture collection. Four strains of P. aeruginosa were infected by phages that were characterized by electron microscopy and isolated to assess their ability to infect. The best condition to maintain...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacteriophages; Pseudomonas aeruginosa.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000800689

Ox-LDL increases OX40L in endothelial cells through a LOX-1-dependent mechanism
Provedor de dados: 56
Autores: Dong,Q.; Xiang,R.; Zhang,D.Y.; Qin,S.
Oxidative low-density lipoprotein (Ox-LDL) is a key risk factor for the development of atherosclerosis, and it can stimulate the expression of a variety of inflammatory signals. As a new and highly sensitive inflammation index, OX40L may be a key to understanding the mechanisms that regulate interactions between cells within the vessel wall and inflammatory mediators during the development of atherosclerosis. To investigate whether Ox-LDL regulates OX40L expression through an oxidized LDL-1 receptor (LOX-1)-mediated mechanism, we investigated the effect of different concentrations of Ox-LDL (50, 100, 150 µg/mL) on endothelial cell proliferation and apoptosis. Stimulation with Ox-LDL increased OX40L protein 1.44-fold and mRNA 4.0-fold in endothelial cells,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atherosclerosis; Ox-LDL; LOX-1; OX40/OX40L; Polyinosinic acid.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000900765

Immunohistochemical detection of virus through its nuclear cytopathic effect in idiopathic interstitial pneumonia other than acute exacerbation
Provedor de dados: 56
Autores: Santos,G.C. dos; Parra,E.R.; Stegun,F.W.; Cirqueira,C.S.; Capelozzi,V.L.
Idiopathic interstitial pneumonias include complex diseases that have a strong interaction between genetic makeup and environmental factors. However, in many cases, no infectious agent can be demonstrated, and these clinical diseases rapidly progress to death. Theoretically, idiopathic interstitial pneumonias could be caused by the Epstein-Barr virus, cytomegalovirus, adenovirus, hepatitis C virus, respiratory syncytial virus, and herpesvirus, which may be present in such small amounts or such configuration that routine histopathological analysis or viral culture techniques cannot detect them. To test the hypothesis that immunohistochemistry provides more accurate results than the mere histological demonstration of viral inclusions, this method was applied...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fibrosing interstitial pneumonia; Viral infections; Immunohistochemistry; Tissue microarray.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013001100985

Stretch-induced nerve injury: a proposed technique for the study of nerve regeneration and evaluation of the influence of gabapentin on this model
Provedor de dados: 56
Autores: Machado,J.A.; Ghizoni,M.F.; Bertelli,J.; Teske,Gabriel C.; Teske,Guilherme C.; Martins,D.F.; Mazzardo-Martins,L.; Cargnin-Ferreira,E.; Santos,A.R.S.; Piovezan,A.P.
The rat models currently employed for studies of nerve regeneration present distinct disadvantages. We propose a new technique of stretch-induced nerve injury, used here to evaluate the influence of gabapentin (GBP) on nerve regeneration. Male Wistar rats (300 g; n=36) underwent surgery and exposure of the median nerve in the right forelimbs, either with or without nerve injury. The technique was performed using distal and proximal clamps separated by a distance of 2 cm and a sliding distance of 3 mm. The nerve was compressed and stretched for 5 s until the bands of Fontana disappeared. The animals were evaluated in relation to functional, biochemical and histological parameters. Stretching of the median nerve led to complete loss of motor function up to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nerve regeneration; Median nerve; Motor activity; Rat model.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013001100929

Partial baroreceptor dysfunction and low plasma nitric oxide bioavailability as determinants of salt-sensitive hypertension: a reverse translational rat study
Provedor de dados: 56
Autores: Rodríguez-Pérez,A.S.; López-Rodríguez,J.F.; Calvo-Turrubiartes,M.Z.; Saavedra-Alanís,V.M.; Llamazares-Azuara,L.; Rodríguez-Martínez,M.
This study determined whether clinical salt-sensitive hypertension (cSSHT) results from the interaction between partial arterial baroreceptor impairment and a high-sodium (HNa) diet. In three series (S-I, S-II, S-III), mean arterial pressure (MAP) of conscious male Wistar ChR003 rats was measured once before (pdMAP) and twice after either sham (SHM) or bilateral aortic denervation (AD), following 7 days on a low-sodium (LNa) diet (LNaMAP) and then 21 days on a HNa diet (HNaMAP). The roles of plasma nitric oxide bioavailability (pNOB), renal medullary superoxide anion production (RMSAP), and mRNA expression of NAD(P)H oxidase and superoxide dismutase were also assessed. In SHM (n=11) and AD (n=15) groups of S-I, LNaMAP-pdMAP was 10.5±2.1 vs 23±2.1 mmHg...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Salt-sensitive hypertension; Aortic barodenervation; Nitric oxide bioavailability.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013001000868

Maternal serum progesterone, estradiol and estriol levels in successful dinoprostone-induced labor
Provedor de dados: 56
Autores: Konopka,C.K.; Morais,E.N.; Naidon,D.; Pereira,A.M.; Rubin,M.A.; Oliveira,J.F.; Mello,C.F.
Hormone-mediated quiescence involves the maintenance of a decreased inflammatory responsiveness. However, no study has investigated whether labor induction with prostanoids is associated with changes in the levels of maternal serum hormones. The objective of this study was to determine whether labor induction with dinoprostone is associated with changes in maternal serum progesterone, estradiol, and estriol levels. Blood samples were obtained from 81 pregnant women at term. Sixteen patients had vaginal birth after spontaneous labor, 12 required cesarean section after spontaneous labor and 16 underwent elective cesarean. Thirty-seven patients had labor induction with dinoprostone. Eligible patients received a vaginal insert of dinoprostone (10 mg) and were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Labor induction Dinoprostone; PGE2 Progesterone Estriol Estradiol.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000100091

Effect and the probable mechanisms of silibinin in regulating insulin resistance in the liver of rats with non-alcoholic fatty liver
Provedor de dados: 56
Autores: Yao,Jiayin; Zhi,Min; Gao,Xiang; Hu,Pinjin; Li,Chujun; Yang,Xiaobo.
Our previous study has shown that reduced insulin resistance (IR) was one of the possible mechanisms for the therapeutic effect of silibinin on non-alcoholic fatty liver disease (NAFLD) in rats. In the present study, we investigated the pathways of silibinin in regulating hepatic glucose production and IR amelioration. Forty-five 4- to 6-week-old male Sprague Dawley rats were divided into a control group, an HFD group (high-fat diet for 6 weeks) and an HFD + silibinin group (high-fat diet + 0.5 mg kg-1·day-1 silibinin, starting at the beginning of the protocol). Both subcutaneous and visceral fat was measured. Homeostasis model assessment-IR index (HOMA-IR), intraperitoneal glucose tolerance test and insulin tolerance test (ITT) were performed. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Non-alcoholic fatty liver disease; Insulin resistance; Silibinin; Visceral obesity.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000300270

Exogenous normal lymph alleviates microcirculation disturbances and abnormal hemorheological properties in rats with disseminated intravascular coagulation
Provedor de dados: 56
Autores: Niu,Chun-Yu; Zhao,Zi-Gang; Zhang,Yu-Ping; Hou,Ya-Li; Li,Jun-Jie; Jiang,Hua; Zhang,Jing.
Disturbances of the microcirculation and abnormal hemorheological properties are important factors that play an important role in disseminated intravascular coagulation (DIC) and result in organ dysfunction or failure. In the present study, we established an animal model of DIC using intravenous Dextran 500 in rats, and used exogenous normal lymph corresponding to 1/15 of whole blood volume for injection through the left jugular vein. We found that normal lymph could improve the blood pressure and survival time of rats with DIC. The results regarding the mesenteric microcirculation showed that the abnormality of the diameter of mesenteric microvessels and micro-blood flow speed in the DIC+lymph group was significantly less than in the DIC+saline group....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Disseminated intravascular coagulation; Lymph; Mesenteric microcirculation; Hemorheology; Dextran 500.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000200138

Addressing conflicts of interest in the research paper: a societal demand in contemporary science?
Provedor de dados: 56
Autores: Vasconcelos,S.M.R.; Cassimiro,M.C.; Martins,M.F.M.; Palácios,M.
In the last decade, dialogue between science and society has found a forum in an increasing number of publications on topics such as public engagement with science and public trust in science. Concerning the latter, issues that include cases of research misconduct, accountability in research, and conflicts of interest (COIs) have shaped global discussions on the communication of science. In the publication setting, the perception that hiding COIs and/or not managing them well may affect public trust in the research record has grown among editors. We conducted a search for editorials addressing COIs between 1989 and 2011, using four major databases: Medline/PubMed, Embase, Scopus, and Web of Knowledge. We explored the content of these editorials and the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Conflicts of interest; Contemporary science; Science policy; Science education; Research integrity; Science and society.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013001201007

Chromatic spatial contrast sensitivity estimated by visual evoked cortical potential and psychophysics
Provedor de dados: 56
Autores: Barboni,M.T.S.; Gomes,B.D.; Souza,G.S.; Rodrigues,A.R.; Ventura,D.F.; Silveira,L.C.L.
The purpose of the present study was to measure contrast sensitivity to equiluminant gratings using steady-state visual evoked cortical potential (ssVECP) and psychophysics. Six healthy volunteers were evaluated with ssVECPs and psychophysics. The visual stimuli were red-green or blue-yellow horizontal sinusoidal gratings, 5° × 5°, 34.3 cd/m2 mean luminance, presented at 6 Hz. Eight spatial frequencies from 0.2 to 8 cpd were used, each presented at 8 contrast levels. Contrast threshold was obtained by extrapolating second harmonic amplitude values to zero. Psychophysical contrast thresholds were measured using stimuli at 6 Hz and static presentation. Contrast sensitivity was calculated as the inverse function of the pooled cone contrast threshold. ssVECP...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Contrast sensitivity; Color vision; Steady-state visual evoked cortical potential; Visual thresholds; Spatial vision; Psychophysics.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000200154

Nitro-fatty acids: novel anti-inflammatory lipid mediators
Provedor de dados: 56
Autores: Rubbo,H.
Nitro-fatty acids are formed and detected in human plasma, cell membranes, and tissue, modulating metabolic as well as inflammatory signaling pathways. Here we discuss the mechanisms of nitro-fatty acid formation as well as their key chemical and biochemical properties. The electrophilic properties of nitro-fatty acids to activate anti-inflammatory signaling pathways are discussed in detail. A critical issue is the influence of nitroarachidonic acid on prostaglandin endoperoxide H synthases, redirecting arachidonic acid metabolism and signaling. We also analyze in vivo data supporting nitro-fatty acids as promising pharmacological tools to prevent inflammatory diseases.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nitro-fatty acids; Antioxidants; Nitric oxide; Inflammation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000900728

Electroretinography in dogs using a fiber electrode prototype
Provedor de dados: 56
Autores: Pereira,A.L.; Montiani-Ferreira,F.; Santos,V.R.; Salomão,S.R.; Souza,C.; Berezovsky,A.
We compared two electroretinography (ERG) electrodes in dogs using ERG standards of the International Society for Clinical Electrophysiology of Vision (ISCEV). Ten healthy Yorkshire terrier dogs (mean age, 2.80 ± 1.42 years; 6 females) weighing 5.20 ± 1.56 kg were evaluated using an ERG system for veterinary use. Dark- and light-adapted ERG responses were recorded using an ERG-Jet electrode and a fiber electrode prototype. The examinations were performed during 2 visits, 3 weeks apart. Both electrodes (ERG-Jet or fiber prototype) were used on each animal and the first eye to be recorded (OD × OS) was selected randomly. Three weeks later the examination was repeated on the same animal switching the type of electrode to be used that day and the first eye to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Electroretinography; Electrode; Retina; Canine; Prototype.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000300257

Placental hydroxymethylation vsmethylation at the imprinting control region 2 on chromosome 11p15.5
Provedor de dados: 56
Autores: Magalhães,H.R.; Leite,S.B.P.; Paz,C.C.P. de; Duarte,G.; Ramos,E.S.
In addition to methylated cytosines (5-mCs), hydroxymethylcytosines (5-hmCs) are present in CpG dinucleotide-enriched regions and some transcription regulator binding sites. Unlike methylation, hydroxymethylation does not result in silencing of gene expression, and the most commonly used methods to study methylation, such as techniques based on restriction enzymatic digestion and/or bisulfite modification, are unable to distinguish between them. Genomic imprinting is a process of gene regulation where only one member of an allelic pair is expressed depending on the parental origin. Chromosome 11p15.5 has an imprinting control region (ICR2) that includes a differentially methylated region (KvDMR1) that guarantees parent-specific gene expression. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Methylation; Hydroxymethylation; Placenta; Genomic Imprinting; ICR2; KvDMR1.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013001100916

An improved experimental model for peripheral neuropathy in rats
Provedor de dados: 56
Autores: Dias,Q.M.; Rossaneis,A.C.; Fais,R.S.; Prado,W.A.
A modification of the Bennett and Xie chronic constriction injury model of peripheral painful neuropathy was developed in rats. Under tribromoethanol anesthesia, a single ligature with 100% cotton glace thread was placed around the right sciatic nerve proximal to its trifurcation. The change in the hind paw reflex threshold after mechanical stimulation observed with this modified model was compared to the change in threshold observed in rats subjected to the Bennett and Xie or the Kim and Chung spinal ligation models. The mechanical threshold was measured with an automated electronic von Frey apparatus 0, 2, 7, and 14 days after surgery, and this threshold was compared to that measured in sham rats. All injury models produced significant hyperalgesia in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chronic constriction injury; Chronic pain model; Neuropathy; Peripheral nerve lesion; Spinal nerve ligation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000300253

Ziyuglycoside II-induced apoptosis in human gastric carcinoma BGC-823 cells by regulating Bax/Bcl-2 expression and activating caspase-3 pathway
Provedor de dados: 56
Autores: Zhu,A.K.; Zhou,H.; Xia,J.Z.; Jin,H.C.; Wang,K.; Yan,J.; Zuo,J.B.; Zhu,X.; Shan,T.
Ziyuglycoside II is an active compound of Sanguisorba officinalis L. that has anti-inflammation, antioxidation, antibiosis, and homeostasis properties. We report here on the anticancer effect of ziyuglycoside II on human gastric carcinoma BGC-823 cells. We investigated the effects of ziyuglycoside II on cell growth, cell cycle, and cell apoptosis of this cell line. Our results revealed that ziyuglycoside II could inhibit the proliferation of BGC-823 cells by inducing apoptosis but not cell cycle arrest, which was associated with regulation of Bax/Bcl-2 expression, and activation of the caspase-3 pathway. Our study is the first to report the antitumor potential of ziyuglycoside II in BGC-823 gastric cancer cells. Ziyuglycoside II may become a potential...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ziyuglycoside II; BGC-823 cells; Apoptosis; Bax/Bcl-2; Caspase-3.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000800670

The chronic blockade of angiotensin I-converting enzyme eliminates the sex differences of serum cytokine levels of spontaneously hypertensive rats
Provedor de dados: 56
Autores: Dalpiaz,P.L.M.; Lamas,A.Z.; Caliman,I.F.; Medeiros,A.R.S.; Abreu,G.R.; Moysés,M.R.; Andrade,T.U.; Alves,M.F.; Carmona,A.K.; Bissoli,N.S.
Sex hormones modulate the action of both cytokines and the renin-angiotensin system. However, the effects of angiotensin I-converting enzyme (ACE) on the proinflammatory and anti-inflammatory cytokine levels in male and female spontaneously hypertensive rats (SHR) are unclear. We determined the relationship between ACE activity, cytokine levels and sex differences in SHR. Female (F) and male (M) SHR were divided into 4 experimental groups each (n = 7): sham + vehicle (SV), sham + enalapril (10 mg/kg body weight by gavage), castrated + vehicle, and castrated + enalapril. Treatment began 21 days after castration and continued for 30 days. Serum cytokine levels (ELISA) and ACE activity (fluorimetry) were measured. Male rats exhibited a higher serum ACE...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: SHR Enalapril Sexual dimorphism Angiotensin I-converting enzyme Cytokines IL-10; IL-6 and TNF-α.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000200171

Differential effects of aging on spatial contrast sensitivity to linear and polar sine-wave gratings
Provedor de dados: 56
Autores: Costa,T.L.; Nogueira,R.M.T.B.L.; Pereira,A.G.F.; Santos,N.A.
Changes in visual function beyond high-contrast acuity are known to take place during normal aging. We determined whether sensitivity to linear sine-wave gratings and to an elementary stimulus preferentially processed in extrastriate areas could be distinctively affected by aging. We measured spatial contrast sensitivity twice for concentric polar (Bessel) and vertical linear gratings of 0.6, 2.5, 5, and 20 cycles per degree (cpd) in two age groups (20-30 and 60-70 years). All participants were free of identifiable ocular disease and had normal or corrected-to-normal visual acuity. Participants were more sensitive to Cartesian than to polar gratings in all frequencies tested, and the younger adult group was more sensitive to all stimuli tested. Significant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Contrast sensitivity; Circular gratings; Linear gratings; Aging; Spatial vision.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013001000855

The epigenetic modifiers 5-aza-2'-deoxycytidine and trichostatin A influence adipocyte differentiation in human mesenchymal stem cells
Provedor de dados: 56
Autores: Zych,J.; Stimamiglio,M.A.; Senegaglia,A.C.; Brofman,P.R.S.; Dallagiovanna,B.; Goldenberg,S.; Correa,A.
Epigenetic mechanisms such as DNA methylation and histone modification are important in stem cell differentiation. Methylation is principally associated with transcriptional repression, and histone acetylation is correlated with an active chromatin state. We determined the effects of these epigenetic mechanisms on adipocyte differentiation in mesenchymal stem cells (MSCs) derived from bone marrow (BM-MSCs) and adipose tissue (ADSCs) using the chromatin-modifying agents trichostatin A (TSA), a histone deacetylase inhibitor, and 5-aza-2′-deoxycytidine (5azadC), a demethylating agent. Subconfluent MSC cultures were treated with 5, 50, or 500 nM TSA or with 1, 10, or 100 µM 5azadC for 2 days before the initiation of adipogenesis. The differentiation was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mesenchymal stem cells; Trichostatin A; 5-Aza-2′-deoxycytidine; Adipocyte differentiation; Epigenetics.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000500405

Low-dose thioperamide injected into the cerebellar vermis of mice immediately after exposure to the elevated plus-maze impairs their avoidance behavior on re-exposure to the apparatus
Provedor de dados: 56
Autores: Costa Neto,J.; Serafim,K.R.; Gianlorenço,A.C.L.; Mattioli,R.
The present study investigated the effect of thioperamide (THIO), an H3 histaminergic receptor antagonist, microinjected into the cerebellar vermis on emotional memory consolidation in male Swiss albino mice re-exposed to the elevated plus-maze (EPM). We implanted a guide cannula into the cerebellar vermis using stereotactic surgery. On the third day after surgery, we performed behavioral tests for two consecutive days. On the first day (exposure), the mice (n=10/group) were exposed to the EPM and received THIO (0.06, 0.3, or 1.5 ng/0.1 µL) immediately after the end of the session. Twenty-four hours later, the mice were re-exposed to the EPM under the same experimental conditions, but without drug injection. A reduction in the exploration of the open arms...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Histaminergic system; Cerebellum; H3; Emotional memory; Memory consolidation; Elevated plus-maze.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013001100943

Effect of eccentric training on mitochondrial function and oxidative stress in the skeletal muscle of rats
Provedor de dados: 56
Autores: Silva,L.A.; Bom,K.F.; Tromm,C.B.; Rosa,G.L.; Mariano,I.; Pozzi,B.G.; Tuon,T.; Stresck,E.L.; Souza,C.T.; Pinho,R.A.
The objective of the present study was to investigate the effects of eccentric training on the activity of mitochondrial respiratory chain enzymes, oxidative stress, muscle damage, and inflammation of skeletal muscle. Eighteen male mice (CF1) weighing 30-35 g were randomly divided into 3 groups (N = 6): untrained, trained eccentric running (16°; TER), and trained running (0°) (TR), and were submitted to an 8-week training program. TER increased muscle oxidative capacity (succinate dehydrogenase and complexes I and II) in a manner similar to TR, and TER did not decrease oxidative damage (xylenol and creatine phosphate) but increased antioxidant enzyme activity (superoxide dismutase and catalase) similar to TR. Muscle damage (creatine kinase) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eccentric training; Mitochondrial enzyme activity; Oxidative stress; Muscle damage; Inflammation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000100014

Nasal CPAP in the delivery room for newborns with extremely low birth weight in a hospital in a developing country
Provedor de dados: 56
Autores: Gonçalves-Ferri,W.A.; Martinez,F.E.
The objective of this study was to determine the feasibility of the use of continuous positive airway pressure installed prophylactically in the delivery room (DR-CPAP), for infants with a birth weight between 500 and 1000 g in settings with limited resources. During 23 months, infants with a birth weight between 500 and 1000 g consecutively received DR-CPAP. A total of 33 infants with low birth weight were enrolled, 16 (48.5%) were females. Only 14 (42.4%) received antenatal corticosteroids and only 2 of those 14 (14.3%) infants weighing 500-750 g were not intubated in the delivery room, and apnea was given as the reason for intubation of these patients. Of the 19 infants in the 751-1000 g weight range, 9 (47.4%) were intubated in the delivery room, 6 due...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Continuous positive airway pressure ventilation; Preterm infants; Delivery room; Nasal continuous positive airway pressure; Prematurity.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013001000892

Influence of the dopaminergic system, CREB, and transcription factor-κB on cocaine neurotoxicity
Provedor de dados: 56
Autores: Planeta,C.S.; Lepsch,L.B.; Alves,R.; Scavone,C.
Cocaine is a widely used drug and its abuse is associated with physical, psychiatric and social problems. Abnormalities in newborns have been demonstrated to be due to the toxic effects of cocaine during fetal development. The mechanism by which cocaine causes neurological damage is complex and involves interactions of the drug with several neurotransmitter systems, such as the increase of extracellular levels of dopamine and free radicals, and modulation of transcription factors. The aim of this review was to evaluate the importance of the dopaminergic system and the participation of inflammatory signaling in cocaine neurotoxicity. Our study showed that cocaine activates the transcription factors NF-κB and CREB, which regulate genes involved in cellular...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cocaine; Apoptosis; NF-κB; CREB; BDNF; Neurotoxicity.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013001100909

GABA-induced inactivation of Cebus apella V2 neurons: effects on orientation tuning and direction selectivity
Provedor de dados: 56
Autores: Jansen-Amorim,A.K.; Fiorani,M.; Gattass,R.
We investigated the GABA-induced inactivation of V2 neurons and terminals on the receptive field properties of this area in an anesthetized and paralyzedCebus apella monkey. Extracellular single-unit activity was recorded using tungsten microelectrodes in a monkey before and after pressure-injection of a 0.25 or 0.5 M GABA solution. The visual stimulus consisted of a bar moving in 8 possible directions. In total, 24 V2 neurons were studied before and after blocker injections in 4 experimental sessions following GABA injection into area V2. A group of 10 neurons were studied over a short period. An additional 6 neurons were investigated over a long period after the GABA injection. A third group of 8 neurons were studied over a very long period. Overall,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Visual cortex; Single units; Extracellular recordings; New World monkeys.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000700589

Differences in prostate cancer detection between Canadian and Saudi populations
Provedor de dados: 56
Autores: Al-Abdin,O.Z.; Rabah,D.M.; Badr,G.; Kotb,A.; Aprikian,A.
Few studies have addressed racial differences in prostate cancer (PCa) detection between Western and Arabian countries, although PCa has a significantly lower prevalence in Arabic populations compared to Western populations. Therefore, an explanation of this difference is lacking. Serum prostate-specific antigen (PSA) is a valuable marker used to select patients who should undergo prostate biopsies, although the manner in which it is used may require adjustments based on the ethnic population in question. We investigated racial differences in the PCa detection rate between Canadian and Saudi populations. A retrospective analysis was performed of data collected prospectively over 5 consecutive years in urology clinics at the McGill University Health Center...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Prostate cancer; Serum; PSA; PSA density; Digital rectal examination.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000600539

Tumor growth reduction is regulated at the gene level in Walker 256 tumor-bearing rats supplemented with fish oil rich in EPA and DHA
Provedor de dados: 56
Autores: Borghetti,G.; Yamazaki,R.K.; Coelho,I.; Pequito,D.C.T.; Schiessel,D.L.; Kryczyk,M.; Mamus,R.; Naliwaiko,K.; Fernandes,L.C.
We investigated the effect of fish oil (FO) supplementation on tumor growth, cyclooxygenase 2 (COX-2), peroxisome proliferator-activated receptor gamma (PPARγ), and RelA gene and protein expression in Walker 256 tumor-bearing rats. Male Wistar rats (70 days old) were fed with regular chow (group W) or chow supplemented with 1 g/kg body weight FO daily (group WFO) until they reached 100 days of age. Both groups were then inoculated with a suspension of Walker 256 ascitic tumor cells (3×107 cells/mL). After 14 days the rats were killed, total RNA was isolated from the tumor tissue, and relative mRNA expression was measured using the 2-ΔΔCT method. FO significantly decreased tumor growth (W=13.18±1.58 vsWFO=5.40±0.88 g, P&lt;0.05). FO supplementation also...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cancer; Fish oil; Gene expression.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000800696

Impairment of locomotor activity induced by the novelN-acylhydrazone derivatives LASSBio-785 and LASSBio-786 in mice
Provedor de dados: 56
Autores: Silva,G.A.P.; Kummerle,A.E.; Antunes,F.; Fraga,C.A.M.; Barreiro,E.J.; Zapata-Sudo,G.; Sudo,R.T.
The N-acylhydrazone (NAH) analogues N-methyl 2-thienylidene 3,4-benzoylhydrazine (LASSBio-785) and N-benzyl 2-thienylidene 3,4-benzoylhydrazine (LASSBio-786) were prepared from 2-thienylidene 3,4-methylenedioxybenzoylhydrazine (LASSBio-294). The ability of LASSBio-785 and LASSBio-786 to decrease central nervous system activity was investigated in male Swiss mice. LASSBio-785 or LASSBio-786 (30 mg/kg, ip) reduced locomotor activity from 209 ± 26 (control) to 140 ± 18 (P &lt; 0.05) or 146 ± 15 crossings/min (P &lt; 0.05), respectively. LASSBio-785 (15 or 30 mg/kg, iv) also reduced locomotor activity from 200 ± 15 to 116 ± 29 (P &lt; 0.05) or 60 ± 16 crossings/min (P &lt; 0.01), respectively. Likewise, LASSBio-786 (15 or 30 mg/kg, iv) reduced locomotor...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: N-acylhydrazone; Locomotor activity; Sedation; Hypnosis; Benzodiazepine receptor; Flumazenil.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000300263

Behavior of the P1.HTR mastocytoma cell line implanted in the chorioallantoic membrane of chick embryos
Provedor de dados: 56
Autores: Avram,Ş.F.; Cimpean,A.M.; Raica,M.
The P1.HTR cell line includes highly transfectable cells derived from P815 mastocytoma cells originating from mouse breast tissue. Despite its widespread use in immunogenic studies, no data are available about the behavior of P1.HTR cells in the chick embryo chorioallantoic membrane model. The objective of the present investigation was to study the effects of P1.HTR cells implanted on the chorioallantoic membrane of chick embryos. We inoculated P1.HTR cells into the previously prepared chick embryo chorioallantoic membrane and observed the early and late effects of these cells by stereomicroscopy, histochemistry and immunohistochemistry. A highly angiotropic and angiogenic effect occurred early after inoculation and a tumorigenic potential with the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: P1.HTR; Mastocytoma; Chick embryo chorioallantoic membrane; Angiogenesis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000100052

Plasmatic ADAMTS-13 metalloprotease and von Willebrand factor in children with cyanotic congenital heart disease
Provedor de dados: 56
Autores: Soares,R.P.S.; Bydlowski,S.P.; Nascimento,N.M.; Thomaz,A.M.; Bastos,E.N.M.; Lopes,A.A.
Changes in plasma von Willebrand factor concentration (VWF:Ag) and ADAMTS-13 activity (the metalloprotease that cleaves VWF physiologically) have been reported in several cardiovascular disorders with prognostic implications. We therefore determined the level of these proteins in the plasma of children with cyanotic congenital heart disease (CCHD) undergoing surgical treatment. Forty-eight children were enrolled (age 0.83 to 7.58 years). Measurements were performed at baseline and 48 h after surgery. ELISA, collagen-binding assays and Western blotting were used to estimate antigenic and biological activities, and proteolysis of VWF multimers. Preoperatively, VWF:Ag and ADAMTS-13 activity were decreased (65 and 71% of normal levels considered as 113...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: ADAMTS-13; Von Willebrand factor; Congenital heart disease; Thrombosis; Cardiac surgery.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000400375

Myocardial remodeling and bioelectric changes in tachycardia-induced heart failure in dogs
Provedor de dados: 56
Autores: Song,B.; Wang,B.N.; Chen,D.N.; Luo,Z.G.
In this study, electrical and structural remodeling of ventricles was examined in tachycardia-induced heart failure (HF). We studied two groups of weight-matched adult male mongrel dogs: a sham-operated control group (n=5) and a pacing group (n=5) that underwent ventricular pacing at 230 bpm for 3 weeks. Clinical symptoms of congestive HF were observed in both groups. Their hemodynamic parameters were determined and the severity of the HF was evaluated by M-mode echocardiography. Changes in heart morphology were observed by scanning electron and light microscopy. Ventricular action potential duration (APD), as well as the 50 and 90% APD were measured in both groups. All dogs exhibited clinical symptoms of congestive HF after rapid right ventricular pacing...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tachycardia; Heart failure; Action potential duration.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000900797

Short-term and long-term antibody response by mice after immunization against Neisseria meningitidis B or diphtheria toxoid
Provedor de dados: 56
Autores: Silva,G.P.; Cruz,S.C.; Cruz,A.C.; Milagres,L.G.
Serogroup B Neisseria meningitidis (MenB) is a major cause of invasive disease in early childhood worldwide. The only MenB vaccine available in Brazil was produced in Cuba and has shown unsatisfactory efficacy when used to immunize millions of children in Brazil. In the present study, we compared the specific functional antibody responses evoked by the Cuban MenB vaccine with a standard vaccine against diphtheria (DTP: diphtheria, tetanus, pertussis) after primary immunization and boosting of mice. The peak of bactericidal and opsonic antibody titers to MenB and of neutralizing antibodies to diphtheria toxoid (DT) was reached after triple immunization with the MenB vaccine or DTP vaccine, respectively. However, 4 months after immunization, protective DT...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Serological memory; Antibody recall response; Booster immunization.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000200148

Cytogenetic studies of Brazilian pediatric myelodysplastic syndrome cases: challenges and difficulties in a large and emerging country
Provedor de dados: 56
Autores: Velloso,E.D.R.P.; Chauffaille,M.L.; Peliçario,L.M.; Tanizawa,R.S.S.; Toledo,S.R.C.; Gaiolla,R.D.; Lopes,L.F.
Myelodysplastic syndromes (MDS) and juvenile myelomonocytic leukemia (JMML) are rare hematopoietic stem cell diseases affecting children. Cytogenetics plays an important role in the diagnosis of these diseases. We report here the experience of the Cytogenetic Subcommittee of the Brazilian Cooperative Group on Pediatric Myelodysplastic Syndromes (BCG-MDS-PED). We analyzed 168 cytogenetic studies performed in 23 different cytogenetic centers; 84 of these studies were performed in patients with confirmed MDS (primary MDS, secondary MDS, JMML, and acute myeloid leukemia/MDS+Down syndrome). Clonal abnormalities were found in 36.9% of the MDS cases and cytogenetic studies were important for the detection of constitutional diseases and for differential diagnosis...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Childhood myelodysplastic syndromes; Juvenile myelomonocytic leukemia; Cytogenetics; Karyotype; Diagnosis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000100085

A detailed description of an economical setup for electroporation of chick embryos in ovo
Provedor de dados: 56
Autores: Borges,R.M.; Horne,J.H.; Melo,A.; Vidal,J.T.; Vieceli,F.M.; Melo,M.O.; Kanno,T.Y.N.; Fraser,S.E.; Yan,C.Y.I.
One of the challenges of the postgenomic era is characterizing the function and regulation of specific genes. For various reasons, the early chick embryo can easily be adopted as an in vivo assay of gene function and regulation. The embryos are robust, accessible, easily manipulated, and maintained in the laboratory. Genomic resources centered on vertebrate organisms increase daily. As a consequence of optimization of gene transfer protocols by electroporation, the chick embryo will probably become increasingly popular for reverse genetic analysis. The challenge of establishing chick embryonic electroporation might seem insurmountable to those who are unfamiliar with experimental embryological methods. To minimize the cost, time, and effort required to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Electroporation; In vivo gene expression; Electroporator; Vertebrate embryo.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000900752

Genetic analysis of the ELOVL6 gene polymorphism associated with type 2 diabetes mellitus
Provedor de dados: 56
Autores: Liu,Y.; Wang,F.; Yu,X.L.; Miao,Z.M.; Wang,Z.C.; Chen,Y.; Wang,Y.G.
Recent animal studies have indicated that overexpression of the elongation of long-chain fatty acids family member 6 (Elovl6) gene can cause insulin resistance and β-cell dysfunction. These are the major factors involved in the development of type 2 diabetes mellitus (T2DM). To identify the relationship between single nucleotide polymorphisms (SNP) ofELOVL6 and T2DM pathogenesis, we conducted a case-control study of 610 Han Chinese individuals (328 newly diagnosed T2DM and 282 healthy subjects). Insulin resistance and islet first-phase secretion function were evaluated by assessment of insulin resistance in a homeostasis model (HOMA-IR) and an arginine stimulation test. Three SNPs of the ELOVL6 gene were genotyped with polymerase chain reaction-restriction...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Elongation of long-chain fatty acids family member 6; Single nucleotide polymorphism; Type 2 diabetes mellitus; Insulin resistance; Β-cell function.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000700623

AKT inhibitor suppresses hyperthermia-induced Ndrg2 phosphorylation in gastric cancer cells
Provedor de dados: 56
Autores: Tao,Yurong; Guo,Yan; Liu,Wenchao; Zhang,Jian; Li,Xia; Shen,Lan; Ru,Yi; Xue,Yan; Zheng,Jin; Liu,Xinping; Zhang,Jing; Yao,Libo.
Hyperthermia is one of the most effective adjuvant treatments for various cancers with few side effects. However, the underlying molecular mechanisms still are not known. N-myc downstream-regulated gene 2 (NDRG2), a tumor suppressor, has been shown to be involved in diverse cellular stresses including hypoxia, lipotoxicity, etc. In addition, Ndrg2 has been reported to be related to progression of gastric cancer. In the current study, our data showed that the apoptosis rate of MKN28 cells increased relatively rapidly to 13.4% by 24 h after treatment with hyperthermia (42°C for 1 h) compared to 5.1% in control cells (P &lt; 0.05). Nevertheless, there was no obvious change in the expression level of total Ndrg2 during this process. Further investigation...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hyperthermia; Gastric cancer; Ndrg2; Apoptosis; AKT inhibitor.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000400394

H1 but not H2 histamine antagonist receptors mediate anxiety-related behaviors and emotional memory deficit in mice subjected to elevated plus-maze testing
Provedor de dados: 56
Autores: Serafim,K.R.; Kishi,M.S.; Canto-de-Souza,A.; Mattioli,R.
This study investigated the role of H1 and H2 receptors in anxiety and the retrieval of emotional memory using a Trial 1/Trial 2 (T1/T2) protocol in an elevated plus-maze (EPM). Tests were performed on 2 consecutive days, designated T1 and T2. Before T1, the mice received intraperitoneal injections of saline (SAL), 20 mg/kg zolantidine (ZOL, an H2receptor antagonist), or 8.0 or 16 mg/kg chlorpheniramine (CPA, an H1 receptor antagonist). After 40 min, they were subjected to the EPM test. In T2 (24 h later), each group was subdivided into two additional groups, and the animals from each group were re-injected with SAL or one of the drugs. In T1, the Student t-test showed no difference between the SAL and ZOL or 8 mg/kg CPA groups with respect to the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chlorpheniramine; Zolantidine; Anxiety; Memory; Elevated plus-maze.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000500440

The impact of short daily hemodialysis on anemia and the quality of life in Chinese patients
Provedor de dados: 56
Autores: Jiang,J.L.; Ren,W.; Song,J.; Sun,Q.L.; Xiao,X.Y.; Diao,X.Z.; Huang,Y.H.; Lan,L.; Wang,P.; Hu,Z.
Anemia is a frequent complication in hemodialysis patients. Compared to conventional hemodialysis (CHD), short daily hemodialysis (sDHD) has been reported to be effective in many countries except China. The aim of the present study was to determine whether sDHD could improve anemia and quality of life (QOL) for Chinese outpatients with end-stage renal disease. Twenty-seven patients (16 males/11 females) were converted from CHD to sDHD. All laboratory values were measured before conversion (baseline), at 3 months after conversion (sDHD1), and at 6 months after conversion (sDHD2). The patient's QOL was evaluated at baseline and 6 months after conversion using the Medical Outcomes Study 36-Item Short Form Health Survey (SF-36). Hemoglobin concentration...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Short daily hemodialysis; Anemia; Erythropoietin; Quality of life; End-stage renal disease.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000700629

Leptin receptor (Ob-R) mRNA expression and serum leptin concentration in patients with colorectal and metastatic colorectal cancer
Provedor de dados: 56
Autores: Erkasap,N.; Ozkurt,M.; Erkasap,S.; Yasar,F.; Uzuner,K.; Ihtiyar,E.; Uslu,S.; Kara,M.; Bolluk,O.
The objective of the present study was to investigate the effect of leptin on the progression of colorectal carcinoma to metastatic disease by analyzing the serum leptin concentration and Ob-R gene expression in colon cancer tissues. Tissue samples were obtained from 31 patients who underwent surgical resection for colon (18 cases) and metastatic colon (13 cases) cancer. Serum leptin concentration was determined by an enzyme-linked immunosorbent assay (ELISA) and Ob-R mRNA expression by real-time polymerase chain reaction (RT-PCR) for both groups. ELISA data were analyzed by the Student t-test and RT-PCR data were analyzed by the Mann-Whitney U-test. RT-PCR results demonstrated that mRNA expression of Ob-R in human metastatic colorectal cancer was higher...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Leptin; Colorectal cancer; Metastatic colorectal cancer; Leptin receptor (Ob-R); Real-time PCR.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000300306

In vitro and in vivo antitumor activity of crude extracts obtained from Brazilian Chromobacterium sp isolates
Provedor de dados: 56
Autores: Menezes,C.B.A.; Silva,B.P.; Sousa,I.M.O.; Ruiz,A.L.T.G.; Spindola,H.M.; Cabral,E.; Eberlin,M.N.; Tinti,S.V.; Carvalho,J.E.; Foglio,M.A.; Fantinatti-Garboggini,F.
Natural products produced by microorganisms have been an important source of new substances and lead compounds for the pharmaceutical industry. Chromobacterium violaceum is a Gram-negative β-proteobacterium, abundant in water and soil in tropical and subtropical regions and it produces violacein, a pigment that has shown great pharmaceutical potential. Crude extracts of five Brazilian isolates of Chromobacterium sp (0.25, 2.5, 25, and 250 µg/mL) were evaluated in an in vitro antitumor activity assay with nine human tumor cells. Secondary metabolic profiles were analyzed by liquid chromatography and electrospray ionization mass spectrometry resulting in the identification of violacein in all extracts, whereas FK228 was detected only in EtCE 308 and EtCE 592...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chromobacterium sp; Antitumor activity; Secondary metabolites; Genetic diversity; Violacein.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000100065

Adenovirus-mediated siRNA targeting TNF-α and overexpression of bone morphogenetic protein-2 promotes early osteoblast differentiation on a cell model of Ti particle-induced inflammatory response in vitro
Provedor de dados: 56
Autores: Guo,H.H.; Yu,C.C.; Sun,S.X.; Ma,X.J.; Yang,X.C.; Sun,K.N.; Jin,Q.H.
Wear particles are phagocytosed by macrophages and other inflammatory cells, resulting in cellular activation and release of proinflammatory factors, which cause periprosthetic osteolysis and subsequent aseptic loosening, the most common causes of total joint arthroplasty failure. During this pathological process, tumor necrosis factor-alpha (TNF-α) plays an important role in wear-particle-induced osteolysis. In this study, recombination adenovirus (Ad) vectors carrying both target genes [TNF-α small interfering RNA (TNF-α-siRNA) and bone morphogenetic protein 2 (BMP-2)] were synthesized and transfected into RAW264.7 macrophages and pro-osteoblastic MC3T3-E1 cells, respectively. The target gene BMP-2, expressed on pro-osteoblastic MC3T3-E1 cells and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: TNF-α; BMP-2; Small interfering RNA; Titanium particles; Osteolysis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013001000831

Thalamic metabolic abnormalities in patients with Huntington's disease measured by magnetic resonance spectroscopy
Provedor de dados: 56
Autores: Casseb,R.F.; D'Abreu,A.; Ruocco,H.H.; Lopes-Cendes,I.; Cendes,F.; Castellano,G.
Huntington's disease (HD) is a neurologic disorder that is not completely understood; its fundamental physiological mechanisms and chemical effects remain somewhat unclear. Among these uncertainties, we can highlight information about the concentrations of brain metabolites, which have been widely discussed. Concentration differences in affected, compared to healthy, individuals could lead to the development of useful tools for evaluating the progression of disease, or to the advance of investigations of different/alternative treatments. The aim of this study was to compare the thalamic concentration of metabolites in HD patients and healthy individuals using magnetic resonance spectroscopy. We used a 2.0-Tesla magnetic field, repetition time of 1500 ms,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Magnetic resonance spectroscopy; Huntington's disease; Quantification; Thalamus; LCModel.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000800722

Sedative and anesthetic activities of the essential oils of Hyptis mutabilis (Rich.) Briq. and their isolated components in silver catfish (Rhamdia quelen)
Provedor de dados: 56
Autores: Silva,L.L.; Garlet,Q.I.; Benovit,S.C.; Dolci,G.; Mallmann,C.A.; Bürger,M.E.; Baldisserotto,B.; Longhi,S.J.; Heinzmann,B.M.
This study evaluated the sedative and anesthetic effects of the essential oils (EO) of Hyptis mutabilis (Rich.) Briq. and their isolated components on silver catfish (Rhamdia quelen). Quantitative chemical differences between the EOs obtained from leaves and inflorescences were verified, and a new chemotype rich in globulol was described. Although there were no significant differences in the time of induction for sedation and anesthesia between the EOs, only the leaf EO at 344 mg/L anesthetized all fish without side effects. Fractionation of the leaf EO was carried out by column chromatography. The isolated compounds [(+)-1-terpinen-4-ol and (-)-globulol] showed different activity from that detected for the leaf EO in proportional concentrations and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Silver catfish; (+)-1-Terpinen-4-ol; (-)-Globulol; Sedation; GABA.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000900771

An interleukin-33/ST2 signaling deficiency reduces overt pain-like behaviors in mice
Provedor de dados: 56
Autores: Magro,D.A.C.; Hohmann,M.S.N.; Mizokami,S.S.; Cunha,T.M.; Alves-Filho,J.C.; Casagrande,R.; Ferreira,S.H.; Liew,F.Y.; Cunha,F.Q.; Verri Jr,W.A.
Interleukin (IL)-33, the most recent member of the IL family of cytokines, signals through the ST2 receptor. IL-33/ST2 signaling mediates antigen challenge-induced mechanical hyperalgesia in the joints and cutaneous tissues of immunized mice. The present study asked whether IL-33/ST2 signaling is relevant to overt pain-like behaviors in mice. Acetic acid and phenyl-p-benzoquinone induced significant writhing responses in wild-type (WT) mice; this overt nociceptive behavior was reduced in ST2-deficient mice. In an antigen-challenge model, ST2-deficient immunized mice had reduced induced flinch and licking overt pain-like behaviors. In the formalin test, ST2-deficient mice also presented reduced flinch and licking responses, compared with WT mice. Naive WT...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Interleukin-33; ST2; Pain; Nociception; Inflammation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000700601

The efficacy of moxifloxacin-based triple therapy in treatment of Helicobacter pylori infection: a systematic review and meta-analysis of randomized clinical trials
Provedor de dados: 56
Autores: Zhang,G.; Zou,J.; Liu,F.; Bao,Z.; Dong,F.; Huang,Y.; Yin,S.
Recent evidence shows that moxifloxacin could exert an antimicrobial effect against Helicobacter pylori in both in vitroand in vivo models. To systematically evaluate whether moxifloxacin-containing triple therapy could improve eradication rates and reduce side effects in first-line or second-line anti-H. pyloritreatment, eligible articles were identified by searches of electronic databases. We included all randomized trials comparing moxifloxacin-based triple therapy with standard triple or quadruple therapy during H. pylori eradication treatment. Statistical analysis was performed with Review Manager 5.0.10. Subanalysis/sensitivity analysis was also performed. We identified seven randomized trials (n=1263). Pooled H. pylori eradication rates were 79.03%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Moxifloxacin; Helicobacter pylori; Eradication rate; Side effects; Meta-analysis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000700607

Phytohemagglutinin improves the development and ultrastructure of in vitro-cultured goat (Capra hircus) preantral follicles
Provedor de dados: 56
Autores: Cunha,E.V.; Costa,J.J.N.; Rossi,R.O.D.S.; Silva,A.W.B.; Passos,J.R.S.; Portela,A.M.L.R.; Pereira,D.C.S.T.; Donato,M.A.M.; Campello,C.C.; Saraiva,M.V.A.; Peixoto,C.A.; Silva,J.R.V.; Santos,R.P.
The objective this study was to determine the effect of phytohemagglutinin (PHA) on survival, growth and gene expression in caprine secondary follicles culturedin vitro. Secondary follicles (∼0.2 mm) were isolated from the cortex of caprine ovaries and cultured individually for 6 days in α-MEM+ supplemented with PHA (0, 1, 10, 50, 100, or 200 µg/mL). After 6 days of culture, follicle diameter and survival, antrum formation, ultrastructure and expression of mRNA for FSH receptors (FSH-R), proliferating cell nuclear antigen (PCNA), and neuronal nitric oxide synthase were determined. All treatments maintained follicular survival [α-MEM+ (94.59%); 1 µg/mL PHA (96.43%); 10 µg/mL PHA (84.85%); 50 µg/mL PHA (85.29%); 100 µg/mL PHA (88.57%), and 200 µg/mL PHA...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Caprine; Antrum formation; FSH-R; PCNA; Ultrastructure.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000300245

Capecitabine maintenance therapy in patients with recurrent or metastatic breast cancer
Provedor de dados: 56
Autores: Si,W.; Zhu,Y.Y.; Li,Y.; Gao,P.; Han,C.; You,J.H.; Linghu,R.X.; Jiao,S.C.; Yang,J.L.
Our objective was to investigate the efficacy and safety of capecitabine maintenance therapy (CMT) after capecitabine-based combination chemotherapy in patients with metastatic breast cancer. The clinical data of 139 metastatic breast cancer patients treated from March 2008 to May 2012 with capecitabine-based combination chemotherapy were retrospectively analyzed. When initial disease control was achieved by the combination chemotherapy, we used CMT for 50 patients, while 37 patients were treated with a different (non-CMT) maintenance therapy. We compared time to progression (TTP), objective response rate, disease control rate, clinical benefit rate, and safety of the two groups, and a sub-group analysis was performed according to pathological...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Capecitabine; Maintenance therapy; Metastatic breast cancer.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013001201074

Culture of bovine ovarian follicle wall sections maintained the highly estrogenic profile under basal and chemically defined conditions
Provedor de dados: 56
Autores: Vasconcelos,R.B.; Salles,L.P.; Oliveira e Silva,I.; Gulart,L.V.M.; Souza,D.K.; Torres,F.A.G.; Bocca,A.L.; Rosa e Silva,A.A.M.
Follicle cultures reproduce in vitro the functional features observed in vivo. In a search for an ideal model, we cultured bovine antral follicle wall sections (FWS) in a serum-free defined medium (DM) known to induce 17β-estradiol (E2) production, and in a nondefined medium (NDM) containing serum. Follicles were sectioned and cultured in NDM or DM for 24 or 48 h. Morphological features were determined by light microscopy. Gene expression of steroidogenic enzymes and follicle-stimulating hormone (FSH) receptor were determined by RT-PCR; progesterone (P4) and E2 concentrations in the media were measured by radioimmunoassay. DM, but not NDM, maintained an FWS morphology in vitro that was similar to fresh tissue. DM also induced an increase in the expression...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ovary follicle wall section; FSH receptor; Gene expression; Steroidogenic enzymes; Hormone steroids; Morphological aspect.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000800700

Ischemia preconditioning is neuroprotective in a rat cerebral ischemic injury model through autophagy activation and apoptosis inhibition
Provedor de dados: 56
Autores: Xia,D.Y.; Li,W.; Qian,H.R.; Yao,S.; Liu,J.G.; Qi,X.K.
Sublethal ischemic preconditioning (IPC) is a powerful inducer of ischemic brain tolerance. However, its underlying mechanisms are still not well understood. In this study, we chose four different IPC paradigms, namely 5 min (5 min duration), 5×5 min (5 min duration, 2 episodes, 15-min interval), 5×5×5 min (5 min duration, 3 episodes, 15-min intervals), and 15 min (15 min duration), and demonstrated that three episodes of 5 min IPC activated autophagy to the greatest extent 24 h after IPC, as evidenced by Beclin expression and LC3-I/II conversion. Autophagic activation was mediated by the tuberous sclerosis type 1 (TSC1)-mTor signal pathway as IPC increased TSC1 but decreased mTor phosphorylation. Terminal deoxynucleotidyl transferase dUTP nick end...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ischemic preconditioning; Autophagy; Apoptosis; Focal cerebral ischemic reperfusion.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000700580

IL-6 upregulation contributes to the reduction of miR-26a expression in hepatocellular carcinoma cells
Provedor de dados: 56
Autores: Zhang,Yafei; Zhang,Bicheng; Zhang,Anran; Li,Xiaohua; Liu,Jian; Zhao,Jie; Zhao,Yong; Gao,Jianfei; Fang,Dianchun; Rao,Zhiguo.
A recent study showed that miR-26a is downregulated in hepatocellular carcinoma tissues and that this downregulation is an independent predictor of survival. Interestingly, the same study also reported that miR-26a downregulation causes a concomitant elevation of IL-6 expression. Because miR-26a expression was found to be transcriptionally downregulated by oncogene c-Myc in various cancers, and the expression of c-Myc was increased by IL-6 stimulation, we hypothesized that IL-6 contributes to reduction of miR-26a in hepatocellular carcinoma. Serum IL-6 was measured by ELISA and miR-26a was detected by qRT-PCR. The data of 30 patients with hepatocellular carcinoma who had undergone surgical tumor resection revealed that serum IL-6 could be considered to be...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: MiR-26a; IL-6; C-Myc; Hepatocellular carcinoma; Carcinoma prognosis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000100032

Induced maturation of hepatic progenitor cellsin vitro
Provedor de dados: 56
Autores: Bi,Y.; He,Y.; Huang,J.Y.; Xu,L.; Tang,N.; He,T.C.; Feng,T.
Hepatic progenitor cells (HPCs) are a potential cell source for liver cell transplantation but do not function like mature liver cells. We sought an effective and reliable method to induce HPC maturation. An immortalized HP14.5 albumin promoter-driven Gaussian luciferase (ALB-GLuc) cell line was established from HPCs isolated from fetal mouse liver of post coitus day 14.5 mice to investigate the effect of induction factors on ALB promoter. HP14.5 parental cells were cultured in DMEM with different combinations of 2% horse serum (HS), 0.1 µM dexamethasone (DEX), 10 ng/mL hepatic growth factor (HGF), and/or 20 ng/mL fibroblast growth factor 4 (FGF4). Trypan blue and crystal violet staining were used to assess cell proliferation with different induction...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hepatic progenitor cells; Induction; Maturation; Dexamethasone; Hepatic growth factor; Fibroblast growth factor 4.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000700559

Pleiotropic effects of simvastatin in physically trained ovariectomized rats
Provedor de dados: 56
Autores: Bernardes,N.; Brito,J.O.; Fernandes,T.G.; Llesuy,S.F.; Irigoyen,M.C.; Belló-Klein,A.; De Angelis,K.
This study tested the hypothesis that simvastatin treatment can improve cardiovascular and autonomic functions and membrane lipoperoxidation, with an increased effect when applied to physically trained ovariectomized rats. Ovariectomized rats were divided into sedentary, sedentary+simvastatin and trained+simvastatin groups (n = 8 each). Exercise training was performed on a treadmill for 8 weeks and simvastatin (5 mg/kg) was administered in the last 2 weeks. Blood pressure (BP) was recorded in conscious animals. Baroreflex sensitivity was evaluated by the tachycardic and bradycardic responses to BP changes. Cardiac vagal and sympathetic effects were determined using methylatropine and propranolol. Oxidative stress was evaluated based on heart and liver...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Menopause; Exercise training; Simvastatin; Autonomic function; Oxidative stress.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000500447

Impact of HPV infection on the development of head and neck cancer
Provedor de dados: 56
Autores: Betiol,J.; Villa,L.L.; Sichero,L.
Human papillomavirus (HPV)-related head and neck squamous cell carcinoma (HNSCC) is considered to be a distinct clinical entity with better prognosis than the classical tobacco- and alcohol-associated tumors. The increasing incidence of this neoplasia during the last decades highlights the need to better understand the role of HPV in the development of these cancers. Although the proportion of HNSCC attributed to HPV varies considerably according to anatomical site, overall approximately 25% of all HNSCC are HPV-DNA positive, and HPV-16 is by far the most prevalent type. In this review we discuss the existing evidence for a causal association between HPV infection and HNSCC at diverse anatomical head and neck subsites.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Human papillomavirus; Oncogenic potential; Head and neck cancer; Viral prevalence.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000300217

Proteomic data show an increase in autoantibodies and alpha-fetoprotein and a decrease in apolipoprotein A-II with time in sera from senescence-accelerated mice
Provedor de dados: 56
Autores: Guo,S.J.; Qi,C.H.; Zhou,W.X.; Zhang,Y.X.; Zhang,X.M.; Wang,J.; Wang,H.X.
We evaluated changes in levels by comparing serum proteins in senescence-accelerated mouse-prone 8 (SAMP8) mice at 2, 6, 12, and 15 months of age (SAMP8-2 m, -6 m, -12 m, -15 m) to age-matched SAM-resistant 1 (SAMR1) mice. Mice were sacrificed, and blood was analyzed by 2-dimensional electrophoresis combined with mass spectrometry. Five protein spots were present in all SAMP8 serum samples, but only appeared in SAMR1 samples at 15 months of age except for spot 3, which also showed a slight expression in SAMR1-12 m sera. Two proteins decreased in the sera from SAMP8-2 m, -6 m, and -12 m mice, and divided into 2 spots each in SAMP8-15 m sera. Thus, the total number of altered spots in SAMP8 sera was 7; of these, 4 were identified as Ig kappa chain V region...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: SAMP8; Serum proteins; 2-DE; Mass spectrometry; M-T413.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000500417

Human papillomavirus infection among sexual partners attending a Sexually Transmitted Disease Clinic in Rio de Janeiro, Brazil
Provedor de dados: 56
Autores: Afonso,L.A.; Rocha,W.M.; Carestiato,F.N.; Dobao,E.A.; Pesca,L.F.; Passos,M.R.L.; Cavalcanti,S.M.B.
Cervical cancer is a major source of illness and death among women worldwide and genital infection with oncogenic human papillomavirus (HPV) its principal cause. There is evidence of the influence of the male factor in the development of cervical neoplasia. Nevertheless, the pathogenic processes of HPV in men are still poorly understood. It has been observed that different HPV types can be found among couples. The objective of the present study was to investigate HPV infections in female patients (n = 60 females/group) as well as in their sexual partners and to identify the concordance of HPV genotypes among them. By using the polymerase chain reaction, we detected a 95% prevalence of HPV DNA in women with cervical intraepithelial neoplasia (CIN) compared...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Human papillomavirus; Neoplasia; Couples; Sexual partners; Polymerase chain reaction.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000600533

High plasma concentrations of asymmetric dimethylarginine inhibit ischemic cardioprotection in hypercholesterolemic rats
Provedor de dados: 56
Autores: Landim,M.B.P.; Dourado,P.M.M.; Casella-Filho,A.; Chagas,A.C.P.; da-Luz,P.L.
A low concentration of nitric oxide associated with a high concentration of asymmetric dimethylarginine (ADMA) can explain the lack of ischemic cardioprotection observed in the presence of hypercholesterolemia. The objective of the present study was to evaluate the effect of hypercholesterolemia on ischemic pre- and postconditioning and its correlation with plasma concentrations of ADMA. Male Wistar rats (6-8 weeks old) fed a 2% cholesterol diet (n = 21) for 8 weeks were compared to controls (n = 25) and were subjected to experimental myocardial infarction and reperfusion, with ischemic pre- and postconditioning. Total cholesterol and ADMA were measured in plasma before the experimental infarct and the infarct area was quantified. Weight, total cholesterol...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hypercholesterolemia; Cardiotonics; Nitric oxide; Risk factors; Asymmetric dimethylarginine.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000500454

Adrenomedullin and adrenotensin regulate collagen synthesis and proliferation in pulmonary arterial smooth muscle cells
Provedor de dados: 56
Autores: Li,W.; Kong,Q.Y.; Zhao,C.F.; Zhao,F.; Li,F.H.; Xia,W.; Wang,R.; Hu,Y.M.; Hua,M.
To understand the pathophysiological mechanisms of pulmonary arterial smooth muscle cell (PASMC) proliferation and extracellular-matrix accumulation in the development of pulmonary hypertension and remodeling, this study determined the effects of different doses of adrenomedullin (ADM) and adrenotensin (ADT) on PASMC proliferation and collagen synthesis. The objective was to investigate whether extracellular signal-regulated kinase (ERK1/2) signaling was involved in ADM- and ADT-stimulated proliferation of PASMCs in 4-week-old male Wistar rats (body weight: 100-150 g, n=10). The proliferation of PASMCs was examined by 5-bromo-2-deoxyuridine incorporation. A cell growth curve was generated by the Cell Counting Kit-8 method. Expression of collagen I,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Adrenomedullin; Adrenotensin; Pulmonary arterial smooth muscle cell; Extracellular signal-regulated kinase-1; Collagen.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013001201047

Diastolic function is associated with quality of life and exercise capacity in stable heart failure patients with reduced ejection fraction
Provedor de dados: 56
Autores: Bussoni,M.F.; Guirado,G.N.; Roscani,M.G.; Polegato,B.F.; Matsubara,L.S.; Bazan,S.G.Z.; Matsubara,B.B.
Exercise capacity and quality of life (QOL) are important outcome predictors in patients with systolic heart failure (HF), independent of left ventricular (LV) ejection fraction (LVEF). LV diastolic function has been shown to be a better predictor of aerobic exercise capacity in patients with systolic dysfunction and a New York Heart Association (NYHA) classification ≥II. We hypothesized that the currently used index of diastolic function E/e' is associated with exercise capacity and QOL, even in optimally treated HF patients with reduced LVEF. This prospective study included 44 consecutive patients aged 55±11 years (27 men and 17 women), with LVEF&lt;0.50 and NYHA functional class I-III, receiving optimal pharmacological treatment and in a stable clinical...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Echocardiography; Left ventricular dysfunction; Six-minute walk test; Dyspnea.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000900803

Target-directed catalytic metallodrugs
Provedor de dados: 56
Autores: Joyner,J.C.; Cowan,J.A.
Most drugs function by binding reversibly to specific biological targets, and therapeutic effects generally require saturation of these targets. One means of decreasing required drug concentrations is incorporation of reactive metal centers that elicit irreversible modification of targets. A common approach has been the design of artificial proteases/nucleases containing metal centers capable of hydrolyzing targeted proteins or nucleic acids. However, these hydrolytic catalysts typically provide relatively low rate constants for target inactivation. Recently, various catalysts were synthesized that use oxidative mechanisms to selectively cleave/inactivate therapeutic targets, including HIV RRE RNA or angiotensin converting enzyme (ACE). These oxidative...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Catalytic metallodrug; Artificial nuclease; Ribonuclease mimic; Artificial protease; HIV; Angiotensin converting enzyme.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000600465

Myosin Va is developmentally regulated and expressed in the human cerebellum from birth to old age
Provedor de dados: 56
Autores: Souza,C.C.R.; Dombroski,T.C.D.; Machado,H.R.; Oliveira,R.S.; Rocha,L.B.; Rodrigues,A.R.A.; Neder,L.; Chimelli,L.; Corrêa,V.M.A.; Larson,R.E.; Martins,A.R.
Myosin Va functions as a processive, actin-based motor molecule highly enriched in the nervous system, which transports and/or tethers organelles, vesicles, and mRNA and protein translation machinery. Mutation of myosin Va leads to Griscelli disease that is associated with severe neurological deficits and a short life span. Despite playing a critical role in development, the expression of myosin Va in the central nervous system throughout the human life span has not been reported. To address this issue, the cerebellar expression of myosin Va from newborns to elderly humans was studied by immunohistochemistry using an affinity-purified anti-myosin Va antibody. Myosin Va was expressed at all ages from the 10th postnatal day to the 98th year of life, in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Myosin Va; Human cerebellum; Postnatal development; Aging; Immunohistochemical expression.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000200164

Effect of melatonin on the functional recovery from experimental traumatic compression of the spinal cord
Provedor de dados: 56
Autores: Schiaveto-de-Souza,A.; da-Silva,C.A.; Defino,H.L.A.; Bel,E.A.Del.
Spinal cord injury is an extremely severe condition with no available effective therapies. We examined the effect of melatonin on traumatic compression of the spinal cord. Sixty male adult Wistar rats were divided into three groups: sham-operated animals and animals with 35 and 50% spinal cord compression with a polycarbonate rod spacer. Each group was divided into two subgroups, each receiving an injection of vehicle or melatonin (2.5 mg/kg, intraperitoneal) 5 min prior to and 1, 2, 3, and 4 h after injury. Functional recovery was monitored weekly by the open-field test, the Basso, Beattie and Bresnahan locomotor scale and the inclined plane test. Histological changes of the spinal cord were examined 35 days after injury. Motor scores were progressively...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Spinal cord injury; Melatonin; Functional recovery.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000400348

Brief daily postpartum separations from the litter alter dam response to psychostimulants and to stress
Provedor de dados: 56
Autores: Silveira,P.P.; Benetti,C. da Silva; Portella,A.K.; Diehl,L.A.; Molle,R. Dalle; Lucion,A.B.; Dalmaz,C.
Neonatal handling induces several behavioral and neurochemical alterations in pups, including decreased responses to stress and reduced fear in new environments. However, there are few reports in the literature concerning the behavioral effects of this neonatal intervention on the dams during the postpartum period. Therefore, the aim of the current study was to determine if brief postpartum separation from pups has a persistent impact on the dam's stress response and behavior. Litters were divided into two neonatal groups: 1) non-handled and 2) handled [10 min/day, from postnatal day (PND) 1 to 10]. Weaning occurred at PND 21 when behavioral tasks started to be applied to the dams, including sweet food ingestion (PND 21), forced swimming test (PND 28), and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Feeding behavior; Neonatal handling; Psychostimulants; Stress response; Dam behavior.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000500426

A spheroid-based 3-D culture model for pancreatic cancer drug testing, using the acid phosphatase assay
Provedor de dados: 56
Autores: Wen,Z.; Liao,Q.; Hu,Y.; You,L.; Zhou,L.; Zhao,Y.
Current therapy for pancreatic cancer is multimodal, involving surgery and chemotherapy. However, development of pancreatic cancer therapies requires a thorough evaluation of drug efficacy in vitro before animal testing and subsequent clinical trials. Compared to two-dimensional culture of cell monolayer, three-dimensional (3-D) models more closely mimic native tissues, since the tumor microenvironment established in 3-D models often plays a significant role in cancer progression and cellular responses to the drugs. Accumulating evidence has highlighted the benefits of 3-D in vitro models of various cancers. In the present study, we have developed a spheroid-based, 3-D culture of pancreatic cancer cell lines MIAPaCa-2 and PANC-1 for pancreatic drug...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Spheroid; Three-dimensional culture; Pancreatic cancer; Drug testing.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000700634

SIRT1 negatively regulates amyloid-beta-induced inflammation via the NF-κB pathway
Provedor de dados: 56
Autores: Cao,L.; Liu,C.; Wang,F.; Wang,H.
Chronic inflammation induced by amyloid-beta (Aβ) plays a key role in the development of age-related macular degeneration (AMD), and matrix metalloproteinase-9 (MMP-9), interleukin (IL)-6, and IL-8 may be associated with chronic inflammation in AMD. Sirtuin 1 (SIRT1) regulates inflammation via inhibition of nuclear factor-kappa B (NF-κB) signaling, and resveratrol has been reported to prevent Aβ-induced retinal degeneration; therefore, we investigated whether this action was mediated via activation of SIRT1 signaling. Human adult retinal pigment epithelial (RPE) cells were exposed to Aβ, and overactivation and knockdown of SIRT1 were performed to investigate whether SIRT1 is required for abrogating Aβ-induced inflammation. We found that Aβ-induced RPE...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amyloid-beta; SRT1720; Age-related macular degeneration; Barrier integrity; Tight junction; Matrix metalloproteinase-9.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000800659

Artificial neural network models for predicting 1-year mortality in elderly patients with intertrochanteric fractures in China
Provedor de dados: 56
Autores: Shi,L.; Wang,X.C.; Wang,Y.S.
The mortality rate of older patients with intertrochanteric fractures has been increasing with the aging of populations in China. The purpose of this study was: 1) to develop an artificial neural network (ANN) using clinical information to predict the 1-year mortality of elderly patients with intertrochanteric fractures, and 2) to compare the ANN's predictive ability with that of logistic regression models. The ANN model was tested against actual outcomes of an intertrochanteric femoral fracture database in China. The ANN model was generated with eight clinical inputs and a single output. ANN's performance was compared with a logistic regression model created with the same inputs in terms of accuracy, sensitivity, specificity, and discriminability. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Artificial neural network; Intertrochanteric fracture; Outcome prediction; One-year mortality.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013001100993

Overexpression of hsa-miR-125b during osteoblastic differentiation does not influence levels of Runx2, osteopontin, and ALPL gene expression
Provedor de dados: 56
Autores: Pinto,M.T.; Nicolete,L.D.F.; Rodrigues,E.S.; Palma,P.V.B.; Orellana,M.D.; Kashima,S.; Covas,D.T.
Multipotent mesenchymal stromal cells (MSCs) were first isolated from bone marrow and then from various adult tissues including placenta, cord blood, deciduous teeth, and amniotic fluid. MSCs are defined or characterized by their ability to adhere to plastic, to express specific surface antigens, and to differentiate into osteogenic, chondrogenic, adipogenic, and myogenic lineages. Although the molecular mechanisms that control MSC proliferation and differentiation are not well understood, the involvement of microRNAs has been reported. In the present study, we investigated the role of miR-125b during osteoblastic differentiation in humans. We found that miR-125b increased during osteoblastic differentiation, as well as Runx2 and ALPL genes. To study...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Multipotent mesenchymal stromal cells; Osteoblastic differentiation; Hsa-miR-125b.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000800676

Gastric emptying of water in children with severe functional fecal retention
Provedor de dados: 56
Autores: Fernandes,V.P.I.; Lima,M.C.L.; Camargo,E.E.; Collares,E.F.; Bustorff-Silva,J.M.; Lomazi,E.A.
The objective of this study was to evaluate gastric emptying (GE) in pediatric patients with functional constipation. GE delay has been reported in adults with functional constipation. Gastric emptying studies were performed in 22 children with chronic constipation, fecal retention and fecal incontinence, while presenting fecal retention and after resuming regular bowel movements. Patients (18 boys, median age: 10 years; range: 7.2 to 12.7 years) were evaluated in a tertiary pediatric gastroenterology clinic. Gastric half-emptying time of water (reference range: 12 ± 3 min) was measured using a radionuclide technique immediately after first patient evaluation, when they presented fecal impaction (GE1), and when they achieved regular bowel movements (GE2),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Functional constipation; Fecal retention; Soiling; Gastric emptying; Scintigraphy.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000300293

Expression of MMP-2 and MMP-9 in the rat trigeminal ganglion during the development of temporomandibular joint inflammation
Provedor de dados: 56
Autores: Nascimento,G.C.; Rizzi,E.; Gerlach,R.F.; Leite-Panissi,C.R.A.
Orofacial pain is a prevalent symptom in modern society. Some musculoskeletal orofacial pain is caused by temporomandibular disorders (TMDs). This condition has a multi-factorial etiology, including emotional factors and alteration of the masticator muscle and temporomandibular joints (TMJs). TMJ inflammation is considered to be a cause of pain in patients with TMD. Extracellular proteolytic enzymes, specifically the matrix metalloproteinases (MMPs), have been shown to modulate inflammation and pain. The purpose of this investigation was to determine whether the expression and level of gelatinolytic activity of MMP-2 and MMP-9 in the trigeminal ganglion are altered during different stages of temporomandibular inflammation, as determined by gelatin...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Persistent temporomandibular inflammation; Matrix metalloproteinases; Trigeminal ganglion.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013001100956

Role of the extracellular matrix in variations of invasive pathways in lung cancers
Provedor de dados: 56
Autores: de Sá,V.K.; Carvalho,L.; Gomes,A.; Alarcão,A.; Silva,M.R.; Couceiro,P.; Sousa,V.; Soares,F.A.; Capelozzi,V.L.
Among the most common features of highly invasive tumors, such as lung adenocarcinomas (AD) and squamous cell carcinomas (SqCC), is the massive degradation of the extracellular matrix. The remarkable qualitative and quantitative modifications of hyaluronidases (HAases), hyaluronan synthases (HAS), E-cadherin adhesion molecules, and the transforming growth factor β (TGF-β) may favor invasion, cellular motility, and proliferation. We examined HAase proteins (Hyal), HAS, E-cadherin, and TGF-β profiles in lung AD subtypes and SqCC obtained from smokers and non-smokers. Fifty-six patients, median age 64 years, who underwent lobectomy for AD (N = 31) and SqCC (N = 25) were included in the study. HAS-1, -2 and -3, and Hyal-1 and -3 were significantly more...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lung cancer E-cadherin TGF-β HAS-1; HAS-2 and HAS-3 Hyal-1 and Hyal-3 Immunohistochemistry Prognosis and morphometry.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000100021

Dyspnea perception in cystic fibrosis patients
Provedor de dados: 56
Autores: Ziegler,B.; Fernandes,A.K.; Sanches,P.R.S.; Junior,D.P. Silva; Thomé,P.R.O.; Dalcin,P.T.R.
We evaluated dyspnea perception in cystic fibrosis patients compared with normal subjects, during an inspiratory resistive loading test and 6-min walk test. We also evaluated the correlation between dyspnea scores induced by resistive loads and by the 6-min walk test. In this prospective, cross-sectional study, 31 patients with cystic fibrosis (≥15 years of age) and 31 age-, gender-, and ethnicity-matched healthy volunteers (20 females and 11 males per group) underwent inspiratory resistive loading, spirometry, and the 6-min walk test. As the magnitude of the inspiratory loads increased, dyspnea scores increased (P&lt;0.001), but there was no difference between groups in dyspnea score (P=0.654). Twenty-six (84%) normal subjects completed all the resistive...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cystic fibrosis; Dyspnea perception; Pulmonary function test; Six-min walk test; Inspiratory resistive load testing.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013001000897

Exaggerated blood pressure response during the exercise treadmill test as a risk factor for hypertension
Provedor de dados: 56
Autores: Lima,S.G.; Albuquerque,M.F.P.M.; Oliveira,J.R.M.; Ayres,C.F.J.; Cunha,J.E.G.; Oliveira,D.F.; Lemos,R.R.; Souza,M.B.R.; Silva,O. Barbosa e.
Exaggerated blood pressure response (EBPR) during the exercise treadmill test (ETT) has been considered to be a risk factor for hypertension. The relationship of polymorphisms of the renin-angiotensin system gene with hypertension has not been established. Our objective was to evaluate whether EBPR during exercise is a clinical marker for hypertension. The study concerned a historical cohort of normotensive individuals. The exposed individuals were those who presented EBPR. At the end of the observation period (41.7 months = 3.5 years), the development of hypertension was analyzed within the two groups. Genetic polymorphisms and blood pressure behavior were assessed as independent variables, together with the classical risk factors for hypertension. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hypertension; Risk factors; Exaggerated blood pressure response.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000400368

Identification of microRNAs and mRNAs associated with multidrug resistance of human laryngeal cancer Hep-2 cells
Provedor de dados: 56
Autores: Yin,Wanzhong; Wang,Ping; Wang,Xin; Song,Wenzhi; Cui,Xiangyan; Yu,Hong; Zhu,Wei.
Multidrug resistance (MDR) poses a serious impediment to the success of chemotherapy for laryngeal cancer. To identify microRNAs and mRNAs associated with MDR of human laryngeal cancer Hep-2 cells, we developed a multidrug-resistant human laryngeal cancer subline, designated Hep-2/v, by exposing Hep-2 cells to stepwise increasing concentrations of vincristine (0.02-0.96'µM). Microarray assays were performed to compare the microRNA and mRNA expression profiles of Hep-2 and Hep-2/v cells. Compared to Hep-2 cells, Hep-2/v cells were more resistant to chemotherapy drugs (∼45-fold more resistant to vincristine, 5.1-fold more resistant to cisplatin, and 5.6-fold more resistant to 5-fluorouracil) and had a longer doubling time (42.33±1.76 vs 28.75±1.12'h,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Multidrug resistance; Laryngeal cancer; Hep-2 cells; MRNA; MicroRNA.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000600546

Lipid peroxidation, detoxification capacity, and genome damage in mice after transplacental exposure to pharmaceutical drugs
Provedor de dados: 56
Autores: Markovic,D.; Katic,J.; Stojkovic,R.; Borovic,S.; Zarkovic,N.; Fucic,A.
Data on genome damage, lipid peroxidation, and levels of glutathione peroxidase (GPX) in newborns after transplacental exposure to xenobiotics are rare and insufficient for risk assessment. The aim of the current study was to analyze, in an animal model, transplacental genotoxicity, lipid peroxidation, and detoxification disturbances caused by the following drugs commonly prescribed to pregnant women: paracetamol, fluconazole, 5-nitrofurantoin, and sodium valproate. Genome damage in dams and their newborn pups transplacentally exposed to these drugs was investigated using the in vivo micronucleus (MN) assay. The drugs were administered to dams intraperitoneally in three consecutive daily doses between days 12 and 14 of pregnancy. The results were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glutathione peroxidase; Malondialdehyde; Genome damage; Transplacental exposure.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013001201014

Acute exposure to lead increases myocardial contractility independent of hypertension development
Provedor de dados: 56
Autores: Fioresi,M.; Furieri,L.B.; Simões,M.R.; Ribeiro Junior,R.F.; Meira,E.F.; Fernandes,A.A.; Stefanon,I.; Vassallo,D.V.
We studied the effects of the acute administration of small doses of lead over time on hemodynamic parameters in anesthetized rats to determine if myocardial contractility changes are dependent or not on the development of hypertension. Male Wistar rats received 320 µg/kg lead acetateiv once, and their hemodynamic parameters were measured for 2 h. Cardiac contractility was evaluated in vitro using left ventricular papillary muscles as were Na+,K+-ATPase and myosin Ca2+-ATPase activities. Lead increased left- (control: 112 ± 3.7 vs lead: 129 ± 3.2 mmHg) and right-ventricular systolic pressures (control: 28 ± 1.2vs lead: 34 ± 1.2 mmHg) significantly without modifying heart rate. Papillary muscles were exposed to 8 µM lead acetate and evaluated 60 min later....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lead; Myocardial contractility; Ventricular pressure.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000200178

Stimulated mast cells promote maturation of myocardial microvascular endothelial cell neovessels by modulating the angiopoietin-Tie-2 signaling pathway
Provedor de dados: 56
Autores: Wang,Z.H.; Zhu,W.; Tao,J.P.; Zhang,Q.Y.; Wei,M.
Angiopoietin (Ang)-1 and Ang-2 interact in angiogenesis to activate the Tie-2 receptor, which may be involved in new vessel maturation and regression. Mast cells (MCs) are also involved in formation of new blood vessels and angiogenesis. The present study was designed to test whether MCs can mediate angiogenesis in myocardial microvascular endothelial cells (MMVECs). Using a rat MMVEC and MC co-culture system, we observed that Ang-1 protein levels were very low even though its mRNA levels were increased by MCs. Interestingly, MCs were able to enhance migration, proliferation, and capillary-like tube formation, which were associated with suppressed Ang-2 protein expression, but not Tie-2 expression levels. These MCs induced effects that could be reversed by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Myocardial microvascular endothelial cells; Mast cell; Angiogenesis; Angiopoietin; Tie-2.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013001100920

Mapping and signaling of neural pathways involved in the regulation of hydromineral homeostasis
Provedor de dados: 56
Autores: Antunes-Rodrigues,J.; Ruginsk,S.G.; Mecawi,A.S.; Margatho,L.O.; Cruz,J.C.; Vilhena-Franco,T.; Reis,W.L.; Ventura,R.R.; Reis,L.C.; Vivas,L.M.; Elias,L.L.K.
Several forebrain and brainstem neurochemical circuitries interact with peripheral neural and humoral signals to collaboratively maintain both the volume and osmolality of extracellular fluids. Although much progress has been made over the past decades in the understanding of complex mechanisms underlying neuroendocrine control of hydromineral homeostasis, several issues still remain to be clarified. The use of techniques such as molecular biology, neuronal tracing, electrophysiology, immunohistochemistry, and microinfusions has significantly improved our ability to identify neuronal phenotypes and their signals, including those related to neuron-glia interactions. Accordingly, neurons have been shown to produce and release a large number of chemical...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hypothalamus; Gaseous neuromodulators; Neuropeptides; Endocannabinoids; Glial cells; Neurotransmitters.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000400327

Effects of melatonin on DNA damage induced by cyclophosphamide in rats
Provedor de dados: 56
Autores: Ferreira,S.G.; Peliciari-Garcia,R.A.; Takahashi-Hyodo,S.A.; Rodrigues,A.C.; Amaral,F.G.; Berra,C.M.; Bordin,S.; Curi,R.; Cipolla-Neto,J.
The antioxidant and free radical scavenger properties of melatonin have been well described in the literature. In this study, our objective was to determine the protective effect of the pineal gland hormone against the DNA damage induced by cyclophosphamide (CP), an anti-tumor agent that is widely applied in clinical practice. DNA damage was induced in rats by a single intraperitoneal injection of CP (20 or 50 mg/kg). Animals received melatonin during the dark period for 15 days (1 mg/kg in the drinking water). Rat bone marrow cells were used for the determination of chromosomal aberrations and of formamidopyrimidine DNA glycosylase enzyme (Fpg)-sensitive sites by the comet technique and ofXpf mRNA expression by qRT-PCR. The number (mean ± SE) of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Melatonin; Cyclophosphamide; Chromosomal aberration; DNA fragmentation; Comet assay; Xpf expression.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000300278

Induction of chagasic-like arrhythmias in the isolated beating hearts of healthy rats perfused with Trypanosoma cruzi-conditioned medium
Provedor de dados: 56
Autores: Rodríguez-Angulo,H.; Toro-Mendoza,J.; Marques,J.; Bonfante-Cabarcas,R.; Mijares,A.
Chagas' myocardiopathy, caused by the intracellular protozoan Trypanosoma cruzi, is characterized by microvascular alterations, heart failure and arrhythmias. Ischemia and arrythmogenesis have been attributed to proteins shed by the parasite, although this has not been fully demonstrated. The aim of the present investigation was to study the effect of substances shed by T. cruzi on ischemia/reperfusion-induced arrhythmias. We performed a triple ischemia-reperfusion (I/R) protocol whereby the isolated beating rat hearts were perfused with either Vero-control or Vero T. cruzi-infected conditioned medium during the different stages of ischemia and subsequently reperfused with Tyrode's solution. ECG and heart rate were recorded during the entire experiment. We...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chagas' disease; Arrhythmias; Ischemia.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000100058

Relationship between genetic mutation variations and acute-phase reactants in the attack-free period of children diagnosed with familial Mediterranean fever
Provedor de dados: 56
Autores: Kosan,C.; Cayir,A.; Turan,M.I.
Familial Mediterranean fever (FMF) is a periodic autoinflammatory disease characterized by chronic inflammation. This study investigated the relationship between acute-phase reactants and gene mutations in attack-free periods of childhood FMF. Patients diagnosed with FMF were divided into four groups based on genetic features: no mutation, homozygous, heterozygous, and compound heterozygous. These groups were monitored for 2 years, and blood samples were collected every 6 months during attack-free periods. Erythrocyte sedimentation rate, C-reactive protein, fibrinogen, and white blood cell count were measured. A disease severity score was determined for each patient. Mean values for erythrocyte sedimentation rate and fibrinogen were significantly different...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Familial Mediterranean fever; Child; Genetic mutation; Acute-phase reactants.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013001000904

Whole transcriptome organisation in the dehydrated supraoptic nucleus
Provedor de dados: 56
Autores: Hindmarch,C.C.T.; Franses,P.; Goodwin,B.; Murphy,D.
The supraoptic nucleus (SON) is part of the central osmotic circuitry that synthesises the hormone vasopressin (Avp) and transports it to terminals in the posterior lobe of the pituitary. Following osmotic stress such as dehydration, this tissue undergoes morphological, electrical and transcriptional changes to facilitate the appropriate regulation and release of Avp into the circulation where it conserves water at the level of the kidney. Here, the organisation of the whole transcriptome following dehydration is modelled to fit Zipf's law, a natural power law that holds true for all natural languages, that states if the frequency of word usage is plotted against its rank, then the log linear regression of this is -1. We have applied this model to our...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Transcriptome; Supraoptic nucleus; Dehydration; Zipf; Microarray; Vasopressin.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013001201000

Serum 25-hydroxyvitamin D and biochemical markers of bone metabolism in patients with juvenile idiopathic arthritis
Provedor de dados: 56
Autores: Munekata,R.V.; Terreri,M.T.R.A.; Peracchi,O.A.B.; Len,C.; Lazaretti-Castro,M.; Sarni,R.O.S.; Hilário,M.O.E.
Our objective was to evaluate the concentrations of serum 25-hydroxyvitamin D [25(OH)D], serum calcium, serum phosphorus, alkaline phosphatase, and parathormone (PTH) in patients with polyarticular juvenile idiopathic arthritis (JIA) and to associate them with disease duration and activity, bone mineral density and use of medications. In a cross-sectional and controlled study, 30 patients with polyarticular JIA were evaluated and compared to 30 healthy individuals matched for age and gender. Clinical status, anthropometry, laboratory markers in both patients and controls, and bone mineral density, only in the patients, were measured. Of the 30 patients included in the study, 23 (76.7%) were female and 16 (53.3%) non-Caucasian; mean age was 14 years (range...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Juvenile idiopathic arthritis; Serum vitamin D deficiency; Calcium; Alkaline phosphatase.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000100098

Rat vas deferens SERCA2 is modulated by Ca2+/calmodulin protein kinase II-mediated phosphorylation
Provedor de dados: 56
Autores: Rodriguez,J.B.R.; Muzi-Filho,H.; Valverde,R.H.F.; Quintas,L.E.M.; Noel,F.; Einicker-Lamas,M.; Cunha,V.M.N.
Ca2+ pumps are important players in smooth muscle contraction. Nevertheless, little information is available about these pumps in the vas deferens. We have determined which subtype of sarco(endo)plasmic reticulum Ca2+-ATPase isoform (SERCA) is expressed in rat vas deferens (RVD) and its modulation by calmodulin (CaM)-dependent mechanisms. The thapsigargin-sensitive Ca2+-ATPase from a membrane fraction containing the highest SERCA levels in the RVD homogenate has the same molecular mass (∼115 kDa) as that of SERCA2 from the rat cerebellum. It has a very high affinity for Ca2+ (Ca0.5 = 780 nM) and a low sensitivity to vanadate (IC50 = 41 µM). These facts indicate that SERCA2 is present in the RVD. Immunoblotting for CaM and Ca2+/calmodulin-dependent protein...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ca2+/calmodulin-dependent kinase II; Calcium homeostasis; Calmodulin; Rat vas deferens; SERCA2; Thapsigargin.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000300227

Effect of castration on renal glycosaminoglycans and their urinary excretion in male and female rats with chronic renal failure
Provedor de dados: 56
Autores: Lemos,C.C.S.; Tovar,A.M.F.; Guimarães,M.A.M.; Bregman,R.
Glycosaminoglycans (GAGs) participate in a variety of processes in the kidney, and evidence suggests that gender-related hormones participate in renal function. The aim of this study was to analyze the relationship of GAGs, gender, and proteinuria in male and female rats with chronic renal failure (CRF). GAGs were analyzed in total kidney tissue and 24-h urine of castrated (c), male (M), and female (F) Wistar control (C) rats (CM, CMc, CF, CFc) and after 30 days of CRF induced by 5/6 nephrectomy (CRFM, CRFMc, CRFF, CRFFc). Total GAG quantification and composition were determined using agarose and polyacrylamide gel electrophoresis, respectively. Renal GAGs were higher in CF compared to CM. CRFM presented an increase in renal GAGs, heparan sulfate (HS), and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Castration; Chronic renal failure; Gender; Glycosaminoglycans; Proteinuria.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000700567

Kaurene diterpene induces apoptosis in U87 human malignant glioblastoma cells by suppression of anti-apoptotic signals and activation of cysteine proteases
Provedor de dados: 56
Autores: Lizarte Neto,F.S.; Tirapelli,D.P.C.; Ambrosio,S.R.; Tirapelli,C.R.; Oliveira,F.M.; Novais,P.C.; Peria,F.M.; Oliveira,H.F.; Carlotti Junior,C.G.; Tirapelli,L.F.
Gliomas are the most common and malignant primary brain tumors in humans. Studies have shown that classes of kaurene diterpene have anti-tumor activity related to their ability to induce apoptosis. We investigated the response of the human glioblastoma cell line U87 to treatment with ent-kaur-16-en-19-oic acid (kaurenoic acid, KA). We analyzed cell survival and the induction of apoptosis using flow cytometry and annexin V staining. Additionally, the expression of anti-apoptotic (c-FLIP and miR-21) and apoptotic (Fas, caspase-3 and caspase-8) genes was analyzed by relative quantification (real-time PCR) of mRNA levels in U87 cells that were either untreated or treated with KA (30, 50, or 70 µM) for 24, 48, and 72 h. U87 cells treated with KA demonstrated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Kaurenoic acid; Glioblastoma; MiR-21; C-FLIP; Apoptosis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000100071

MSX1 gene and nonsyndromic oral clefts in a Southern Brazilian population
Provedor de dados: 56
Autores: Souza,L.T.; Kowalski,T.W.; Collares,M.V.M.; Félix,T.M.
Nonsyndromic oral clefts (NSOC) are the most common craniofacial birth defects in humans. The etiology of NSOC is complex, involving both genetic and environmental factors. Several genes that play a role in cellular proliferation, differentiation, and apoptosis have been associated with clefting. For example, variations in the homeobox gene family member MSX1, including a CA repeat located within its single intron, may play a role in clefting. The aim of this study was to investigate the association between MSX1CA repeat polymorphism and NSOC in a Southern Brazilian population using a case-parent triad design. We studied 182 nuclear families with NSOC recruited from the Hospital de Clínicas de Porto Alegre in Southern Brazil. The polymorphic region was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: MSX1; Cleft lip and palate; Oral clefts.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000700555

TNNI3K is a novel mediator of myofilament function and phosphorylates cardiac troponin I
Provedor de dados: 56
Autores: Wang,Hui; Wang,Lin; Song,Li; Zhang,Yan-Wan; Ye,Jue; Xu,Rui-Xia; Shi,Na; Meng,Xian-Min.
The phosphorylation of cardiac troponin I (cTnI) plays an important role in the contractile dysfunction associated with heart failure. Human cardiac troponin I-interacting kinase (TNNI3K) is a novel cardiac-specific functional kinase that can bind to cTnI in a yeast two-hybrid screen. The purpose of this study was to investigate whether TNNI3K can phosphorylate cTnI at specific sites and to examine whether the phosphorylation of cTnI caused by TNNI3K can regulate cardiac myofilament contractile function. Co-immunoprecipitation was performed to confirm that TNNI3K could interact with cTnI. Kinase assays further indicated that TNNI3K did not phosphorylate cTnI at Ser23/24 and Ser44, but directly phosphorylated Ser43 and Thr143 in vitro. The results obtained...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: TNNI3K; CTnI; Phosphorylation; Contraction function.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000200128

Assessing the diversity of the virulence potential ofEscherichia coli isolated from bacteremia in São Paulo, Brazil
Provedor de dados: 56
Autores: Santos,A.C.M.; Zidko,A.C.M.; Pignatari,A.C.; Silva,R.M.
Most of the knowledge of the virulence determinants of extraintestinal pathogenicEscherichia coli (ExPEC) comes from studies with human strains causing urinary tract infections and neonatal meningitis and animal strains causing avian colibacillosis. In this research, we analyzed the phylogenetic background, the presence of 20 ExPEC virulence factors, and the intrinsic virulence potential of 74 E. coli strains isolated in São Paulo, Brazil, from 74 hospitalized patients (43 males and 31 females) with unknown-source bacteremia. Unlike other places in the world, the bacteremic strains originated equally from phylogroups B2 (35%) and D (30%). A great variability in the profiles of virulence factors was noted in this survey. Nevertheless, 61% of the strains...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacteremia; Extraintestinal pathogenic Escherichia coli; Virulence factors; Intrinsic virulence potential; Phylogenetic background.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013001100968

Evidence for the involvement of peripheral β-adrenoceptors in delayed liquid gastric emptying induced by dipyrone, 4-aminoantipyrine, and antipyrine in rats
Provedor de dados: 56
Autores: Vinagre,A.M.; Collares,E.F.
Dipyrone (Dp), 4-aminoantipyrine (AA), and antipyrine (At) delay liquid gastric emptying (GE) in rats. We evaluated adrenergic participation in this phenomenon in a study in male Wistar rats (250-300 g) pretreated subcutaneously with guanethidine (GUA), 100 mg·kg−1·day−1, or vehicle (V) for 2 days before experimental treatments. Other groups of animals were pretreated intravenously (iv) 15 min before treatment with V, prazosin (PRA; 1 mg/kg), yohimbine (YOH; 3 mg/kg), or propranolol (PRO; 4 mg/kg), or with intracerebroventricular (icv) administration of 25 µg PRO or V. The groups were treated iv with saline or with 240 µmol/kg Dp, AA, or At. GE was determined 10 min later by measuring the percentage of gastric retention (%GR) of saline labeled with phenol...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gastric emptying; Dipyrone; 4-Aminoantipyrine; Antipyrine; Sympathetic nervous system; Adrenergic receptors.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000900735

Hepatitis B virus subgenotype C2- and B2-associated mutation patterns may be responsible for liver cirrhosis and hepatocellular carcinoma, respectively
Provedor de dados: 56
Autores: Chen,Y.M.; Wu,S.H.; Qiu,C.N.; Yu,D.J.; Wang,X.J.
The objective of this study was to examine hepatitis B virus (HBV) subgenotypes and mutations in enhancer II, basal core promoter, and precore regions of HBV in relation to risks of liver cirrhosis (LC) and hepatocellular carcinoma (HCC) in Southeast China. A case-control study was performed, including chronic hepatitis B (CHB; n=125), LC (n=120), and HCC (n=136). HBV was genotyped by multiplex polymerase chain reaction and subgenotyped by restriction fragment length polymorphism. HBV mutations were measured by DNA sequencing. HBV genotype C (68.2%) predominated and genotype B (30.2%) was the second most common. Of these, C2 (67.5%) was the most prevalent subgenotype, and B2 (30.2%) ranked second. Thirteen mutations with a frequency &gt;5% were detected....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hepatitis B virus; Genotype; Core promoter; Precore; Mutation; Advanced liver disease.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000700614

Adipose tissue-derived stem cells promote pancreatic cancer cell proliferation and invasion
Provedor de dados: 56
Autores: Ji,S.Q.; Cao,J.; Zhang,Q.Y.; Li,Y.Y.; Yan,Y.Q.; Yu,F.X.
To explore the effects of adipose tissue-derived stem cells (ADSCs) on the proliferation and invasion of pancreatic cancer cells in vitroand the possible mechanism involved, ADSCs were cocultured with pancreatic cancer cells, and a cell counting kit (CCK-8) was used to detect the proliferation of pancreatic cancer cells. ELISA was used to determine the concentration of stromal cell-derived factor-1 (SDF-1) in the supernatants. RT-PCR was performed to detect the expression of the chemokine receptor CXCR4 in pancreatic cancer cells and ADSCs. An in vitro invasion assay was used to measure invasion of pancreatic cancer cells. SDF-1 was detected in the supernatants of ADSCs, but not in pancreatic cancer cells. Higher CXCR4 mRNA levels were detected in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Adipose tissue-derived stem cells; Pancreatic cancer; Proliferation; Invasion; SDF-1.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000900758

Association of MDR1 gene polymorphisms with the risk of hepatocellular carcinoma in the Chinese Han population
Provedor de dados: 56
Autores: Gao,Jian.
The multidrug resistance 1 gene (MDR1) is an important candidate gene for influencing susceptibility to hepatocellular carcinoma (HCC). The objective of the present study was to evaluate the association ofMDR1 polymorphisms with the risk of HCC in the Chinese Han population. A total of 353 HCC patients and 335 healthy subjects were enrolled in the study. Polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP), created restriction site-PCR (CRS-PCR) and DNA sequencing methods were used to identify MDR1 gene polymorphisms. Two allelic variants (c.335T&gt;C and c.3073A&gt;C) were detected. The CC genotype of the c.335T&gt;C polymorphism was associated with an increased risk of developing HCC compared to the TT genotype (OR = 2.161, 95%CI...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hepatocellular carcinoma; Multidrug resistance 1 gene; Single nucleotide polymorphisms; Susceptibility; Risk factors.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000300311

Relationship of macrophage migration inhibitory factor levels in PBMCs, lesional skin and serum with disease severity and activity in vitiligo vulgaris
Provedor de dados: 56
Autores: Ma,Lei; Xue,Hai-Bo; Guan,Xiu-Hao; Shu,Chun-Mei; Zhang,Yu-Jie; Zhang,Jun-Hua; An,Rong-Zhen.
Melanocyte loss in vitiligo vulgaris is believed to be an autoimmune process. Macrophage migration inhibitory factor (MIF) is involved in many autoimmune skin diseases. We determined the possible role of MIF in the pathogenesis of vitiligo vulgaris, and describe the relationship between MIF expressions and disease severity and activity. Serum MIF concentrations and mRNA levels in PBMCs were measured in 44 vitiligo vulgaris patients and 32 normal controls, using ELISA and real-time RT-PCR. Skin biopsies from 15 patients and 6 controls were analyzed by real-time RT-PCR. Values are reported as median (25th-75th percentile). Serum MIF concentrations were significantly increased in patients [35.81 (10.98-43.66) ng/mL] compared to controls [7.69 (6.01-9.03)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Migration inhibitory factor; Vitiligo vulgaris.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000500460

Antioxidant effect of 4-nerolidylcatechol and α-tocopherol in erythrocyte ghost membranes and phospholipid bilayers
Provedor de dados: 56
Autores: Fernandes,K.S.; Silva,A.H.M.; Mendanha,S.A.; Rezende,K.R.; Alonso,A.
4-Nerolidylcatechol (4-NC) is found in Pothomorphe umbellataroot extracts and is reported to have a topical protective effect against UVB radiation-induced skin damage, toxicity in melanoma cell lines, and antimalarial activity. We report a comparative study of the antioxidant activity of 4-NC and α-tocopherol against lipid peroxidation initiated by two free radical-generating systems: 2,2′-azobis(2-aminopropane) hydrochloride (AAPH) and FeSO4/H2O2, in red blood cell ghost membranes and in egg phosphatidylcholine (PC) vesicles. Lipid peroxidation was monitored by membrane fluidity changes assessed by electron paramagnetic resonance spectroscopy of a spin-labeled lipid and by the formation of thiobarbituric acid-reactive substances. When lipoperoxidation...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Electron paramagnetic resonance 4-Nerolidylcatechol Spin label Lipid peroxidation DPPH (2; 2-diphenyl-1-picrylhydrazyl).
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000900780

Histone demethylase retinoblastoma binding protein 2 regulates the expression of α-smooth muscle actin and vimentin in cirrhotic livers
Provedor de dados: 56
Autores: Wang,Q.; Wang,L.X.; Zeng,J.P.; Liu,X.J.; Liang,X.M.; Zhou,Y.B.
Liver cirrhosis is one of the most common diseases of Chinese patients. Herein, we report the high expression of a newly identified histone 3 lysine 4 demethylase, retinoblastoma binding protein 2 (RBP2), and its role in liver cirrhosis in humans. The siRNA knockdown of RBP2 expression in hepatic stellate cells (HSCs) reduced levels of α-smooth muscle actin (α-SMA) and vimentin and decreased the proliferation of HSCs; and overexpression of RBP2 increased α-SMA and vimentin levels. Treatment with transforming growth factor β (TGF-β) upregulated the expression of RBP2, α-SMA, and vimentin, and the siRNA knockdown of RBP2 expression attenuated TGF-β-mediated upregulation of α-SMA and vimentin expression and HSC proliferation. Furthermore, RBP2 was highly...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: RBP2; Liver cirrhosis; Fibrosis; Α-SMA; Vimentin; HSC.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000900739

Involvement of Src tyrosine kinase and protein kinase C in the expression of macrophage migration inhibitory factor induced by H2O2 in HL-1 mouse cardiac muscle cells
Provedor de dados: 56
Autores: Rao,F.; Deng,C.Y.; Zhang,Q.H.; Xue,Y.M.; Xiao,D.Z.; Kuang,S.J.; Lin,Q.X.; Shan,Z.X.; Liu,X.Y.; Zhu,J.N.; Yu,X.Y.; Wu,S.L.
Macrophage migration inhibitory factor (MIF), a pleiotropic cytokine, plays an important role in the pathogenesis of atrial fibrillation; however, the upstream regulation of MIF in atrial myocytes remains unclear. In the present study, we investigated whether and how MIF is regulated in response to the renin-angiotensin system and oxidative stress in atrium myocytes (HL-1 cells). MIF protein and mRNA levels in HL-1 cells were assayed using immunofluorescence, real-time PCR, and Western blot. The result indicated that MIF was expressed in the cytoplasm of HL-1 cells. Hydrogen peroxide (H2O2), but not angiotensin II, stimulated MIF expression in HL-1 cells. H2O2-induced MIF protein and gene levels increased in a dose-dependent manner and were completely...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Macrophage migration inhibitory factor; HL-1 cells; Hydrogen peroxide; Atrial fibrillation; Protein kinases.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000900746

In vitro inhibitory effects of imatinib mesylate on stromal cells and hematopoietic progenitors from bone marrow
Provedor de dados: 56
Autores: Soares,P.B.; Jeremias,T.S.; Alvarez-Silva,M.; Licínio,M.A.; Santos-Silva,M.C.; Vituri,C.L.
Imatinib mesylate (IM) is used to treat chronic myeloid leukemia (CML) because it selectively inhibits tyrosine kinase, which is a hallmark of CML oncogenesis. Recent studies have shown that IM inhibits the growth of several non-malignant hematopoietic and fibroblast cells from bone marrow (BM). The aim of the present study was to evaluate the effects of IM on stromal and hematopoietic progenitor cells, specifically in the colony-forming units of granulocyte/macrophage (CFU-GM), using BM cultures from 108 1.5- to 2-month-old healthy Swiss mice. The results showed that low concentrations of IM (1.25 µM) reduced the growth of CFU-GM in clonogenic assays. In culture assays with stromal cells, fibroblast proliferation and α-SMA expression by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bone marrow stromal cell; Hematopoietic progenitors; Imatinib mesylate; Myelosuppression.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000100039

The hydrogen sulfide donor, Lawesson's reagent, prevents alendronate-induced gastric damage in rats
Provedor de dados: 56
Autores: Nicolau,L.A.D.; Silva,R.O.; Damasceno,S.R.B.; Carvalho,N.S.; Costa,N.R.D.; Aragão,K.S.; Barbosa,A.L.R.; Soares,P.M.G.; Souza,M.H.L.P.; Medeiros,J.V.R.
Our objective was to investigate the protective effect of Lawesson's reagent, an H2S donor, against alendronate (ALD)-induced gastric damage in rats. Rats were pretreated with saline or Lawesson's reagent (3, 9, or 27 µmol/kg, po) once daily for 4 days. After 30 min, gastric damage was induced by ALD (30 mg/kg) administration by gavage. On the last day of treatment, the animals were killed 4 h after ALD administration. Gastric lesions were measured using a computer planimetry program, and gastric corpus pieces were assayed for malondialdehyde (MDA), glutathione (GSH), proinflammatory cytokines [tumor necrosis factor (TNF)-α and interleukin (IL)-1β], and myeloperoxidase (MPO). Other groups were pretreated with glibenclamide (5 mg/kg, ip) or with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alendronate; Lawesson's reagent; H2S donors; Gastric damage.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000800708

Sleep pattern and learning in knockdown mice with reduced cholinergic neurotransmission
Provedor de dados: 56
Autores: Queiroz,C.M.; Tiba,P.A.; Moreira,K.M.; Guidine,P.A.M.; Rezende,G.H.S.; Moraes,M.F.D.; Prado,M.A.M.; Prado,V.F.; Tufik,S.; Mello,L.E.
Impaired cholinergic neurotransmission can affect memory formation and influence sleep-wake cycles (SWC). In the present study, we describe the SWC in mice with a deficient vesicular acetylcholine transporter (VAChT) system, previously characterized as presenting reduced acetylcholine release and cognitive and behavioral dysfunctions. Continuous, chronic ECoG and EMG recordings were used to evaluate the SWC pattern during light and dark phases in VAChT knockdown heterozygous (VAChT-KDHET, n=7) and wild-type (WT, n=7) mice. SWC were evaluated for sleep efficiency, total amount and mean duration of slow-wave, intermediate and paradoxical sleep, as well as the number of awakenings from sleep. After recording SWC, contextual fear-conditioning tests were used...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sleep-wake cycle; Intermediate sleep; Acetylcholine; Contextual fear conditioning; Memory; Neurodegenerative disorders.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013001000844

Osteogenesis induced in goat bone marrow progenitor cells by recombinant adenovirus coexpressing bone morphogenetic protein 2 and basic fibroblast growth factor
Provedor de dados: 56
Autores: Xu,H.H.; Liu,S.H.; Guo,Q.F.; Liu,Q.H.; Li,X.Y.
Bone morphogenetic protein 2 (BMP2) and basic fibroblast growth factor (bFGF) have been shown to exhibit a synergistic effect to promote bone repair and healing. In this study, we constructed a novel adenovirus with high coexpression of BMP2 and bFGF and evaluated its effect on osteogenic differentiation of goat bone marrow progenitor cells (BMPCs). Recombinant adenovirus Ad-BMP2-bFGF was constructed by using the T2A sequence. BMPCs were isolated from goats by density gradient centrifugation and adherent cell culture, and were then infected with Ad-BMP2-bFGF or Ad-BMP2. Expression of BMP2 and bFGF was detected by ELISA, and alkaline phosphatase (ALP) activity was detected by an ALP assay kit. In addition, von Kossa staining and immunocytochemical staining...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: BMP2; BFGF; Adenovirus; T2A sequence; BMPCs; Osteogenic differentiation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000900809

Application of a modified sequential organ failure assessment score to critically ill patients
Provedor de dados: 56
Autores: Ñamendys-Silva,S.A.; Silva-Medina,M.A.; Vásquez-Barahona,G.M.; Baltazar-Torres,J.A.; Rivero-Sigarroa,E.; Fonseca-Lazcano,J.A.; Domínguez-Cherit,G.
The purpose of the present study was to explore the usefulness of the Mexican sequential organ failure assessment (MEXSOFA) score for assessing the risk of mortality for critically ill patients in the ICU. A total of 232 consecutive patients admitted to an ICU were included in the study. The MEXSOFA was calculated using the original SOFA scoring system with two modifications: the PaO2/FiO2 ratio was replaced with the SpO2/FiO2 ratio, and the evaluation of neurologic dysfunction was excluded. The ICU mortality rate was 20.2%. Patients with an initial MEXSOFA score of 9 points or less calculated during the first 24 h after admission to the ICU had a mortality rate of 14.8%, while those with an initial MEXSOFA score of 10 points or more had a mortality rate...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sequential organ failure assessment score; Organ dysfunction; Critically ill patients; Mortality; Intensive care unit survival; MEXSOFA.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000200186

Correlation between interleukin-18promoter -607C/A polymorphism and susceptibility to ischemic stroke
Provedor de dados: 56
Autores: Lu,Jian-xia; Lu,Zhong-qian; Zhang,Shao-lan; Zhi,Juan; Chen,Zheng-ping; Wang,Wan-xiang.
Single nucleotide polymorphisms in the promoter region ofinterleukin-18 (IL-18), an inflammatory cytokine, have been linked to susceptibility to many diseases, including cancer and immune dysfunction. Here, we explored the potential association between theIL-18 -607C/A (rs1946518) promoter region polymorphism and susceptibility to ischemic stroke (IS). This locus was amplified from peripheral blood samples of 386 IS patients (cases) and 364 healthy individuals (controls) by the polymerase chain reaction with sequence-specific primers. Significant differences were observed by the χ2 test in the -607C/A (rs1946518) genotype and allele frequencies between cases and controls (P &lt; 0.05). Furthermore, after excluding for age, gender, smoking status, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: IL-18; Polymorphism; Ischemic stroke; Correlation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000600502

The N-terminal 33 amino acid domain of Siva-1 is sufficient for nuclear localization
Provedor de dados: 56
Autores: Chen,J.Y.; Yang,L.X.; Huang,Z.F.
Siva-1 induces apoptosis in multiple pathological processes and plays an important role in the suppression of tumor metastasis, protein degradation, and other functions. Although many studies have demonstrated that Siva-1 functions in the cytoplasm, a few have found that Siva-1 can relocate to the nucleus. In this study, we found that the first 33 amino acid residues of Siva-1 are required for its nuclear localization. Further study demonstrated that the green fluorescent protein can be imported into the nucleus after fusion with these 33 amino acid residues. Other Siva-1 regions and domains showed less effect on Siva-1 nuclear localization. By site-mutagenesis of all of these 33 amino acid residues, we found that mutants of the first 1-18 amino acids...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Siva-1; Nuclear localization signal (NLS); Subcellular compartmentalization; Nuclear localization.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013001201021

Effects of sciatic nerve transection on ultrastructure, NADPH-diaphorase reaction and serotonin-, tyrosine hydroxylase-, c-Fos-, glucose transporter 1- and 3-like immunoreactivities in frog dorsal root ganglion
Provedor de dados: 56
Autores: Rigon,F.; Rossato,D.; Auler,V.B.; Dal Bosco,L.; Faccioni-Heuser,M.C.; Partata,W.A.
Frogs have been used as an alternative model to study pain mechanisms. Since we did not find any reports on the effects of sciatic nerve transection (SNT) on the ultrastructure and pattern of metabolic substances in frog dorsal root ganglion (DRG) cells, in the present study, 18 adult male frogs (Rana catesbeiana) were divided into three experimental groups: naive (frogs not subjected to surgical manipulation), sham (frogs in which all surgical procedures to expose the sciatic nerve were used except transection of the nerve), and SNT (frogs in which the sciatic nerve was exposed and transected). After 3 days, the bilateral DRG of the sciatic nerve was collected and used for transmission electron microscopy. Immunohistochemistry was used to detect...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Axotomy; Immunoreactivity; Histochemistry.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000600513

Effects of rosiglitazone on serum paraoxonase activity and metabolic parameters in patients with type 2 diabetes mellitus
Provedor de dados: 56
Autores: Atamer,Y.; Atamer,A.; Can,A.S.; Hekimoğlu,A.; Ilhan,N.; Yenice,N.; Koçyiğit,Y.
Human serum paraoxonase contributes to the anti-atherogenic effect of high-density lipoprotein cholesterol (HDL-C) and has been shown to protect both low-density lipoprotein cholesterol (LDL-C) and HDL-C against lipid peroxidation. We investigated the effects of rosiglitazone on paraoxonase activity and metabolic parameters in patients with type 2 diabetes mellitus [50 patients (30 males, 20 females); mean±SD age: 58.7±9.2 years, body mass index: 28.2±4.1'kg/m2], in whom glucose control could not be achieved despite treatment with metformin, sulphonylurea, and/or insulin. The patients were given 4'mg/day rosiglitazone for 3 months in addition to their usual treatment. Serum paraoxonase activity, malondialdehyde, homocysteine, and lipid profile were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rosiglitazone; Diabetes mellitus type 2; Paraoxonase; Lipoproteins; Homocysteine; Lipid peroxidation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000600528

Experimental models in vaccine research: malaria and leishmaniasis
Provedor de dados: 56
Autores: Teixeira,C.; Gomes,R.
Animal models have a long history of being useful tools, not only to test and select vaccines, but also to help understand the elaborate details of the immune response that follows infection. Different models have been extensively used to investigate putative immunological correlates of protection against parasitic diseases that are important to reach a successful vaccine. The greatest challenge has been the improvement and adaptation of these models to reflect the reality of human disease and the screening of vaccine candidates capable of overcoming the challenge of natural transmission. This review will discuss the advantages and challenges of using experimental animal models for vaccine development and how the knowledge achieved can be extrapolated to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Human vaccines; Animal models; Malaria; Leishmaniasis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000200109

Estragole blocks neuronal excitability by direct inhibition of Na+ channels
Provedor de dados: 56
Autores: Silva-Alves,K.S.; Ferreira-da-Silva,F.W.; Peixoto-Neves,D.; Viana-Cardoso,K.V.; Moreira-Júnior,L.; Oquendo,M.B.; Oliveira-Abreu,K.; Albuquerque,A.A.C.; Coelho-de-Souza,A.N.; Leal-Cardoso,J.H.
Estragole is a volatile terpenoid, which occurs naturally as a constituent of the essential oils of many plants. It has several pharmacological and biological activities. The objective of the present study was to investigate the mechanism of action of estragole on neuronal excitability. Intact and dissociated dorsal root ganglion neurons of rats were used to record action potential and Na+ currents with intracellular and patch-clamp techniques, respectively. Estragole blocked the generation of action potentials in cells with or without inflexions on their descendant (repolarization) phase (Ninf and N0 neurons, respectively) in a concentration-dependent manner. The resting potentials and input resistances of Ninf and N0 cells were not altered by estragole...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Estragole; Local anesthetic; Essential oil; Dorsal root ganglia; Phenylpropanoid; Na+ current.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013001201056

Transcranial direct current stimulation and repetitive transcranial magnetic stimulation in consultation-liaison psychiatry
Provedor de dados: 56
Autores: Valiengo,L.C.L.; Benseñor,I.M.; Lotufo,P.A.; Fraguas Jr,R.; Brunoni,A.R.
Patients with clinical diseases often present psychiatric conditions whose pharmacological treatment is hampered due to hazardous interactions with the clinical treatment and/or disease. This is particularly relevant for major depressive disorder, the most common psychiatric disorder in the general hospital. In this context, nonpharmacological interventions could be useful therapies; and, among those, noninvasive brain stimulation (NIBS) might be an interesting option. The main methods of NIBS are repetitive transcranial magnetic stimulation (rTMS), which was recently approved as a nonresearch treatment for some psychiatric conditions, and transcranial direct current stimulation (tDCS), a technique that is currently limited to research scenarios but has...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Neuromodulation; Liaison; Major depressive disorder; Transcranial stimulation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013001000815

Myosin light chain kinase is necessary for post-shock mesenteric lymph drainage enhancement of vascular reactivity and calcium sensitivity in hemorrhagic-shocked rats
Provedor de dados: 56
Autores: Zhang,Y.P.; Niu,C.Y.; Zhao,Z.G.; Zhang,L.M.; Si,Y.H.
Vascular hyporeactivity is an important factor in irreversible shock, and post-shock mesenteric lymph (PSML) blockade improves vascular reactivity after hemorrhagic shock. This study explored the possible involvement of myosin light chain kinase (MLCK) in PSML-mediated vascular hyporeactivity and calcium desensitization. Rats were divided into sham (n=12), shock (n=18), and shock+drainage (n=18) groups. A hemorrhagic shock model (40±2 mmHg, 3 h) was established in the shock and shock+drainage groups. PSML drainage was performed from 1 to 3 h from start of hypotension in shock+drainage rats. Levels of phospho-MLCK (p-MLCK) were determined in superior mesenteric artery (SMA) tissue, and the vascular reactivity to norepinephrine (NE) and sensitivity to Ca2+...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hemorrhagic shock; Mesenteric lymph; Drainage; Myosin light chain kinase (MLCK); Vascular reactivity; Calcium sensitivity.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000700574

Experimental model of intervertebral disc degeneration by needle puncture in Wistar rats
Provedor de dados: 56
Autores: Issy,A.C.; Castania,V.; Castania,M.; Salmon,C.E.G.; Nogueira-Barbosa,M.H.; Bel,E. Del; Defino,H.L.A.
Animal models of intervertebral disc degeneration play an important role in clarifying the physiopathological mechanisms and testing novel therapeutic strategies. The objective of the present study is to describe a simple animal model of disc degeneration involving Wistar rats to be used for research studies. Disc degeneration was confirmed and classified by radiography, magnetic resonance and histological evaluation. Adult male Wistar rats were anesthetized and submitted to percutaneous disc puncture with a 20-gauge needle on levels 6-7 and 8-9 of the coccygeal vertebrae. The needle was inserted into the discs guided by fluoroscopy and its tip was positioned crossing the nucleus pulposus up to the contralateral annulus fibrosus, rotated 360° twice, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Intervertebral disc degeneration; Animal models; Histology; Wistar rats.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000300235

Roles of estrogen and progesterone in modulating renal nerve function in the rat kidney
Provedor de dados: 56
Autores: Graceli,J.B.; Cicilini,M.A.; Bissoli,N.S.; Abreu,G.R.; Moysés,M.R.
The maintenance of extracellular Na+ and Cl- concentrations in mammals depends, at least in part, on renal function. It has been shown that neural and endocrine mechanisms regulate extracellular fluid volume and transport of electrolytes along nephrons. Studies of sex hormones and renal nerves suggested that sex hormones modulate renal function, although this relationship is not well understood in the kidney. To better understand the role of these hormones on the effects that renal nerves have on Na+ and Cl- reabsorption, we studied the effects of renal denervation and oophorectomy in female rats. Oophorectomized (OVX) rats received 17β-estradiol benzoate (OVE, 2.0 mg·kg-1·day-1, sc) and progesterone (OVP, 1.7 mg·kg-1·day-1,sc). We assessed Na+ and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Estrogen; Na+ and Cl- reabsorption; Progesterone; Renal nerve.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000600521

Association of rs12255372 in theTCF7L2 gene with type 2 diabetes mellitus: a meta-analysis
Provedor de dados: 56
Autores: Wang,Jinjin; Zhang,Jianfeng; Li,Linlin; Wang,Yan; Wang,Qian; Zhai,Yujia; You,Haifei; Hu,Dongsheng.
Our objective was to evaluate the association of rs12255372 in theTCF7L2 gene with type 2 diabetes mellitus (T2DM) in the world population. We carried out a survey of the literature about the effect of rs12255372 on genetic susceptibility to T2DM by consulting PubMed, the Cochrane Library, and Embase from 2006 to 2012, and then performed a meta-analysis of all the studies in order to evaluate the association between rs12255372 and T2DM. A total of 33 articles including 42 studies (with 34,076 cases and 36,192 controls) were confirmed to be eligible and were included in the final meta-analysis: 6 studies conducted on Europeans, 14 on Caucasians, 17 on Asians, 2 on Africans, and 3 on Americans. Overall, the effect size was as follows: for the variant allele...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Type 2 diabetes mellitus; Rs12255372; SNPs; Meta-analysis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000400382

Biochemical adaptations of mammalian hibernation: exploring squirrels as a perspective model for naturally induced reversible insulin resistance
Provedor de dados: 56
Autores: Wu,C-W.; Biggar,K.K.; Storey,K.B.
An important disease among human metabolic disorders is type 2 diabetes mellitus. This disorder involves multiple physiological defects that result from high blood glucose content and eventually lead to the onset of insulin resistance. The combination of insulin resistance, increased glucose production, and decreased insulin secretion creates a diabetic metabolic environment that leads to a lifetime of management. Appropriate models are critical for the success of research. As such, a unique model providing insight into the mechanisms of reversible insulin resistance is mammalian hibernation. Hibernators, such as ground squirrels and bats, are excellent examples of animals exhibiting reversible insulin resistance, for which a rapid increase in body weight...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Metabolic depression; T2DM; PPAR-γ; MicroRNA; Glucose transport; Akt.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000100001

Antioxidant effect of mogrosides against oxidative stress induced by palmitic acid in mouse insulinoma NIT-1 cells
Provedor de dados: 56
Autores: Xu,Q.; Chen,S.Y.; Deng,L.D.; Feng,L.P.; Huang,L.Z.; Yu,R.R.
Excessive oxidative stress in pancreatic β cells, caused by glucose and fatty acids, is associated with the pathogenesis of type 2 diabetes. Mogrosides have shown antioxidant and antidiabetic activities in animal models of diabetes, but the underlying mechanisms remain unclear. This study evaluated the antioxidant effect of mogrosides on insulinoma cells under oxidative stress caused by palmitic acid, and investigated the underlying molecular mechanisms. Mouse insulinoma NIT-1 cells were cultured in medium containing 0.75 mM palmitic acid, mimicking oxidative stress. The effects of 1 mM mogrosides were determined with the dichlorodihydrofluorescein diacetate assay for intracellular reactive oxygen species (ROS) and FITC-Annexin V/PI assay for cell...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mogrosides; Insulin-secreting cells; Oxidative stress damage; Apoptosis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013001100949

Morphometric evaluation of nitric oxide synthase isoforms and their cytokine regulators predict pulmonary dysfunction and survival in systemic sclerosis
Provedor de dados: 56
Autores: Parra,E.R.; Aguiar Junior,A.C.; Silva,L.O.; Souza,H.S.P.; Espinoza,J.D.; Capelozzi,V.L.
Because histopathological changes in the lungs of patients with systemic sclerosis (SSc) are consistent with alveolar and vessel cell damage, we presume that this interaction can be characterized by analyzing the expression of proteins regulating nitric oxide (NO) and plasminogen activator inhibitor-1 (PAI-1) synthesis. To validate the importance of alveolar-vascular interactions and to explore the quantitative relationship between these factors and other clinical data, we studied these markers in 23 cases of SSc nonspecific interstitial pneumonia (SSc-NSIP). We used immunohistochemistry and morphometry to evaluate the amount of cells in alveolar septa and vessels staining for NO synthase (NOS) and PAI-1, and the outcomes of our study were cellular and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Systemic sclerosis; Nitric oxide synthase isoforms; Cytokines; Morphometry; Pulmonary function tests and survival.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013001000881

Limb immobilization alters functional electrophysiological parameters of sciatic nerve
Provedor de dados: 56
Autores: Alves,J.S.M.; Leal-Cardoso,J.H.; Santos-Júnior,F.F.U.; Carlos,P.S.; Silva,R.C.; Lucci,C.M.; Báo,S.N.; Ceccatto,V.M.; Barbosa,R.
Immobilization, used in clinical practice to treat traumatologic problems, causes changes in muscle, but it is not known whether changes also occur in nerves. We investigated the effects of immobilization on excitability and compound action potential (CAP) and the ultrastructure of the rat sciatic nerve. Fourteen days after immobilization of the right leg of adult male Wistar rats (n=34), animals were killed and the right sciatic nerve was dissected and mounted in a moist chamber. Nerves were stimulated at a baseline frequency of 0.2 Hz and tested for 2 min at 20, 50, and 100 Hz. Immobilization altered nerve excitability. Rheobase and chronaxy changed from 3.13±0.05 V and 52.31±1.95 µs (control group, n=13) to 2.84±0.06 V and 59.71±2.79 µs (immobilized...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Immobilization; Sciatic nerve; Compound action potential; Conduction velocity; Rheobase; Chronaxy.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000800715

Reliability and validity of heart rate variability threshold assessment during an incremental shuttle-walk test in middle-aged and older adults
Provedor de dados: 56
Autores: Dourado,V.Z.; Guerra,R.L.F.
Studies on the assessment of heart rate variability threshold (HRVT) during walking are scarce. We determined the reliability and validity of HRVT assessment during the incremental shuttle walk test (ISWT) in healthy subjects. Thirty-one participants aged 57 ± 9 years (17 females) performed 3 ISWTs. During the 1st and 2nd ISWTs, instantaneous heart rate variability was calculated every 30 s and HRVT was measured. Walking velocity at HRVT in these tests (WV-HRVT1 and WV-HRVT2) was registered. During the 3rd ISWT, physiological responses were assessed. The ventilatory equivalents were used to determine ventilatory threshold (VT) and the WV at VT (WV-VT) was recorded. The difference between WV-HRVT1 and WV-HRVT2 was not statistically significant (median and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Heart rate variability; Exercise; Walking; Adults.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000200194

Effects of propofol on damage of rat intestinal epithelial cells induced by heat stress and lipopolysaccharides
Provedor de dados: 56
Autores: Tang,J.; Jiang,Y.; Tang,Y.; Chen,B.; Sun,X.; Su,L.; Liu,Z.
Gut-derived endotoxin and pathogenic bacteria have been proposed as important causative factors of morbidity and death during heat stroke. However, it is still unclear what kind of damage is induced by heat stress. In this study, the rat intestinal epithelial cell line (IEC-6) was treated with heat stress or a combination of heat stress and lipopolysaccharide (LPS). In addition, propofol, which plays an important role in anti-inflammation and organ protection, was applied to study its effects on cellular viability and apoptosis. Heat stress, LPS, or heat stress combined with LPS stimulation can all cause intestinal epithelial cell damage, including early apoptosis and subsequent necrosis. However, propofol can alleviate injuries caused by heat stress, LPS,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Propofol; Heat stress; Lipopolysaccharides; Apoptosis; Intestinal epithelial cells.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000600507

Association between the c.910A&amp;gt;G genetic variant of the XRCC1 gene and susceptibility to esophageal cancer in the Chinese Han population
Provedor de dados: 56
Autores: Chen,X.Q.; Wang,F.; Zheng,Y.L.; Fan,Q.X.; Yue,D.L.; Ma,Z.J.
Esophageal cancer (EC) is a common malignancy worldwide. The X-ray repair cross-complementing 1 gene (XRCC1) is one of the most important candidate genes for influencing susceptibility to EC. This study aimed to investigate the effect of XRCC1 genetic variants on susceptibility to EC. A total of 383 EC patients (males: 239, females: 144, mean age: 56.62) and 387 cancer-free controls (males: 251, females: 136, mean age: 58.23) were enrolled in this study. The c.910A&gt;G genetic variant of theXRCC1 gene was determined by polymerase chain reaction-restriction fragment length polymorphism and DNA sequencing methods. The allele and genotype frequencies indicated statistical differences between EC patients and cancer-free controls. The c.910A&gt;G genetic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Esophageal cancer; XRCC1 gene; Genetic variant; Molecular marker; Susceptibility.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013001201028

VP22 herpes simplex virus protein can transduce proteins into stem cells
Provedor de dados: 56
Autores: Gabanyi,I.; Lojudice,F.H.; Kossugue,P.M.; Rebelato,E.; Demasi,M.A.; Sogayar,M.C.
The type I herpes simplex virus VP22 tegument protein is abundant and well known for its ability to translocate proteins from one cell to the other. In spite of some reports questioning its ability to translocate proteins by attributing the results observed to fixation artifacts or simple attachment to the cell membrane, VP22 has been used to deliver several proteins into different cell types, triggering the expected cell response. However, the question of the ability of VP22 to enter stem cells has not been addressed. We investigated whether VP22 could be used as a tool to be applied in stem cell research and differentiation due to its capacity to internalize other proteins without altering the cell genome. We generated a VP22.eGFP construct to evaluate...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: VP22 protein delivery; Protein transducing domain; EGFP; Stem cells transduction; Cell differentiation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000200121

Effect of ozone oxidative preconditioning in preventing early radiation-induced lung injury in rats
Provedor de dados: 56
Autores: Bakkal,B.H.; Gultekin,F.A.; Guven,B.; Turkcu,U.O.; Bektas,S.; Can,M.
Ionizing radiation causes its biological effects mainly through oxidative damage induced by reactive oxygen species. Previous studies showed that ozone oxidative preconditioning attenuated pathophysiological events mediated by reactive oxygen species. As inhalation of ozone induces lung injury, the aim of this study was to examine whether ozone oxidative preconditioning potentiates or attenuates the effects of irradiation on the lung. Rats were subjected to total body irradiation, with or without treatment with ozone oxidative preconditioning (0.72 mg/kg). Serum proinflammatory cytokine levels, oxidative damage markers, and histopathological analysis were compared at 6 and 72 h after total body irradiation. Irradiation significantly increased lung...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ozone oxidative preconditioning; Irradiation; Lung injury.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000900789

Utility of a novel risk score for prediction of ventricular tachycardia and cardiac death in chronic Chagas disease - the SEARCH-RIO study
Provedor de dados: 56
Autores: Benchimol-Barbosa,P.R.; Tura,B.R.; Barbosa,E.C.; Kantharia,B.K.
The SEARCH-RIO study prospectively investigated electrocardiogram (ECG)-derived variables in chronic Chagas disease (CCD) as predictors of cardiac death and new onset ventricular tachycardia (VT). Cardiac arrhythmia is a major cause of death in CCD, and electrical markers may play a significant role in risk stratification. One hundred clinically stable outpatients with CCD were enrolled in this study. They initially underwent a 12-lead resting ECG, signal-averaged ECG, and 24-h ambulatory ECG. Abnormal Q-waves, filtered QRS duration, intraventricular electrical transients (IVET), 24-h standard deviation of normal RR intervals (SDNN), and VT were assessed. Echocardiograms assessed left ventricular ejection fraction. Predictors of cardiac death and new onset...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chagas heart disease; Noninvasive electrocardiography; Prognostic score; Cardiac death; Ventricular tachycardia.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013001100974

In vitro proliferation and differentiation of hepatic oval cells and their potential capacity for intrahepatic transplantation
Provedor de dados: 56
Autores: Li,Z.; Chen,J.; Li,L.; Ran,J.H.; Liu,J.; Gao,T.X.; Guo,B.Y.; Li,X.H.; Liu,Z.H.; Liu,G.J.; Gao,Y.C.; Zhang,X.L.
Hepatic oval cells (HOCs) are recognized as facultative liver progenitor cells that play a role in liver regeneration after acute liver injury. Here, we investigated the in vitro proliferation and differentiation characteristics of HOCs in order to explore their potential capacity for intrahepatic transplantation. Clusters or scattered HOCs were detected in the portal area and interlobular bile duct in the liver of rats subjected to the modified 2-acetylaminofluorene and partial hepatectomy method. Isolated HOCs were positive for c-kit and CD90 staining (99.8% and 88.8%, respectively), and negative for CD34 staining (3.6%) as shown by immunostaining and flow cytometric analysis. In addition, HOCs could be differentiated into hepatocytes and bile duct...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hepatic oval cells; Proliferation; Differentiation; Liver transplantation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000800681

Argyrophil cell density in the oxyntic mucosa is higher in female than in male morbidly obese patients
Provedor de dados: 56
Autores: Maksud,F.A.N.; Kakehasi,A.M.; Barbosa,A.J.A.
Obesity is a multifactorial disorder often associated with many important diseases such as diabetes, hypertension and other metabolic syndrome conditions. Argyrophil cells represent almost the total population of endocrine cells of the human gastric mucosa and some reports have described changes of specific types of these cells in patients with obesity and metabolic syndrome. The present study was designed to evaluate the global population of argyrophil cells of the gastric mucosa of morbidly obese and dyspeptic non-obese patients. Gastric biopsies of antropyloric and oxyntic mucosa were obtained from 50 morbidly obese patients (BMI &gt;40) and 50 non-obese patients (17 dyspeptic overweight and 33 lean individuals) and processed for histology and Grimelius...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Argyrophil cells; Endocrine cells; Obesity; Gastric mucosa; Metabolic syndrome.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000400339

The acute effects of strength, endurance and concurrent exercises on the Akt/mTOR/p70S6K1 and AMPK signaling pathway responses in rat skeletal muscle
Provedor de dados: 56
Autores: Souza,E.O.de; Tricoli,V.; Bueno Junior,C.; Pereira,M.G.; Brum,P.C.; Oliveira,E.M.; Roschel,H.; Aoki,M.S.; Urginowitsch,C.
The activation of competing intracellular pathways has been proposed to explain the reduced training adaptations after concurrent strength and endurance exercises (CE). The present study investigated the acute effects of CE, strength exercises (SE), and endurance exercises (EE) on phosphorylated/total ratios of selected AMPK and Akt/mTOR/p70S6K1 pathway proteins in rats. Six animals per exercise group were killed immediately (0 h) and 2 h after each exercise mode. In addition, 6 animals in a non-exercised condition (NE) were killed on the same day and under the same conditions. The levels of AMPK, phospho-Thr172AMPK (p-AMPK), Akt, phospho-Ser473Akt (p-Akt), p70S6K1, phospho-Thr389-p70S6K1(p-p70S6K1), mTOR, phospho-Ser2448mTOR (p-mTOR), and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Strength exercise; Concurrent training; Cell signaling; AMPK.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000400343

The left lung is preferentially targeted during experimental paracoccidioidomycosis in C57BL/6 mice
Provedor de dados: 56
Autores: Tristão,F.S.M.; Rocha,F.A.; Dias,F.C.; Rossi,M.A.; Silva,J.S.
Paracoccidioidomycosis (PCM) is a chronic systemic mycosis caused by the inhalation of the thermally dimorphic fungus Paracoccidioides brasiliensis as well as the recently described P. lutzii. Because the primary infection occurs in the lungs, we investigated the differential involvement of the right and left lungs in experimental P. brasiliensis infection. Lungs were collected from C57BL/6 mice at 70 days after intravenous infection with 1×106 yeast cells of a virulent strain of P. brasiliensis (Pb18). The left lung, which in mice is smaller and has fewer lobes than the right lung, yielded increased fungal recovery associated with a predominant interleukin-4 response and diminished synthesis of interferon-γ and nitric oxide compared with the right lung....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lung; Paracoccidioidomycosis; Paracoccidioides brasiliensis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013001000839

A phthalide derivative isolated from endophytic fungiPestalotiopsis photiniae induces G1 cell cycle arrest and apoptosis in human HeLa cells
Provedor de dados: 56
Autores: Chen,C.; Yang,R.L.
MP [4-(3′,3′-dimethylallyloxy)-5-methyl-6-methoxyphthalide] was obtained from liquid culture of Pestalotiopsis photiniaeisolated from the Chinese Podocarpaceae plant Podocarpus macrophyllus. MP significantly inhibited the proliferation of HeLa tumor cell lines. After treatment with MP, characteristic apoptotic features such as DNA fragmentation and chromatin condensation were observed in DAPI-stained HeLa cells. Flow cytometry showed that MP induced G1 cell cycle arrest and apoptosis in a dose-dependent manner. Western blotting and real-time reverse transcription-polymerase chain reaction were used to investigate protein and mRNA expression. MP caused significant cell cycle arrest by upregulating the cyclin-dependent kinase inhibitor p27KIP1 protein and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: MP [4-(3′; 3′-dimethylallyloxy)-5-methyl-6-methoxyphthalide] p73 Apoptosis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000800643

Quercetin postconditioning attenuates myocardial ischemia/reperfusion injury in rats through the PI3K/Akt pathway
Provedor de dados: 56
Autores: Wang,Y.; Zhang,Z.Z.; Wu,Y.; Ke,J.J.; He,X.H.; Wang,Y.L.
Quercetin (Que), a plant-derived flavonoid, has multiple benefical actions on the cardiovascular system. The current study investigated whether Que postconditioning has any protective effects on myocardial ischemia/reperfusion (I/R) injury in vivo and its potential cardioprotective mechanisms. Male Sprague-Dawley rats were randomly allocated to 5 groups (20 animals/group): sham, I/R, Que postconditioning, Que+LY294002 [a phosphatidylinositol 3-kinase (PI3K)/Akt signaling pathway inhibitor], and LY294002+I/R. I/R was produced by 30-min coronary occlusion followed by 2-h reperfusion. At the end of reperfusion, myocardial infarct size and biochemical changes were compared. Apoptosis was evaluated by both TUNEL staining and measurement of activated caspase-3...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ischemia and reperfusion; Quercetin; Postconditioning; PI3K/Akt.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013001000861

Brazilian scientific funding agency budgets have not matched the country's economic growth
Provedor de dados: 56
Autores: Helene,A.F.; Ribeiro,P.L.
The growth of the Brazilian economy in recent years has created an atmosphere of optimism in various segments of Brazilian society, with several important international repercussions. In this paper, we analyze in detail how this economic growth is reflected in investments in science and technology made by major academic funding agencies. As a result, we observed a discrepancy in the growth of funding input and the growth of the Brazilian gross domestic product. This fact associated with an increased academic output entails negative consequences for the system. This may be a symptom of an academic community not fully understood by society and vice versa. Finally, we believe that a long-lasting important change in investment policy in science is necessary in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Scientific investment; Brazil; Inputs and outputs; Gross domestic product; Scholarship.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000200117

Extracellular vesicles: structure, function, and potential clinical uses in renal diseases
Provedor de dados: 56
Autores: Borges,F.T.; Reis,L.A.; Schor,N.
Interest in the role of extracellular vesicles in various diseases including cancer has been increasing. Extracellular vesicles include microvesicles, exosomes, apoptotic bodies, and argosomes, and are classified by size, content, synthesis, and function. Currently, the best characterized are exosomes and microvesicles. Exosomes are small vesicles (40-100 nm) involved in intercellular communication regardless of the distance between them. They are found in various biological fluids such as plasma, serum, and breast milk, and are formed from multivesicular bodies through the inward budding of the endosome membrane. Microvesicles are 100-1000 nm vesicles released from the cell by the outward budding of the plasma membrane. The therapeutic potential of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Extracellular vesicles; Cell biology; Kidney diseases; Diagnosis; Treatment.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013001000824

Performance assessment of the single photon emission microscope: high spatial resolution SPECT imaging of small animal organs
Provedor de dados: 56
Autores: Mejia,J.; Reis,M.A.; Miranda,A.C.C.; Batista,I.R.; Barboza,M.R.F.; Shih,M.C.; Fu,G.; Chen,C.T.; Meng,L.J.; Bressan,R.A.; Amaro Jr,E.
The single photon emission microscope (SPEM) is an instrument developed to obtain high spatial resolution single photon emission computed tomography (SPECT) images of small structures inside the mouse brain. SPEM consists of two independent imaging devices, which combine a multipinhole collimator, a high-resolution, thallium-doped cesium iodide [CsI(Tl)] columnar scintillator, a demagnifying/intensifier tube, and an electron-multiplying charge-coupling device (CCD). Collimators have 300- and 450-µm diameter pinholes on tungsten slabs, in hexagonal arrays of 19 and 7 holes. Projection data are acquired in a photon-counting strategy, where CCD frames are stored at 50 frames per second, with a radius of rotation of 35 mm and magnification factor of one. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tomography; Preclinical imaging; Molecular imaging; Mice.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013001100936

CHRNA5 polymorphism and susceptibility to lung cancer in a Chinese population
Provedor de dados: 56
Autores: Shen,Bo; Zhu,Qun; Zheng,Ma-Qing; Chen,Jia; Shi,Mei-Qi; Feng,Ji-Feng.
Polymorphisms in the nicotinic acetylcholine receptor subunit CHRNA5 gene have been associated with lung cancer positive susceptibility in European and American populations. In the present hospital-based, case-control study, we determined whether polymorphism in rs503464 of CHRNA5 is associated with lung cancer risk in Chinese individuals. A single nucleotide polymorphism in CHRNA5 rs503464, c.-166T&gt;A (hereafter T&gt;A), was identified using TaqMan-MGB probes with sequencing via PCR in 600 lung cancer cases and 600 healthy individuals. Genotype frequencies for rs503464 (T&gt;A) were in Hardy-Weinberg equilibrium for the control population. However, genotype frequencies were significantly different between cases and controls (P &lt; 0.05), while allele...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lung cancer; Nicotinic acetylcholine receptors; CHRNA5 gene; Single nucleotide polymorphisms.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000100079

Effect of scanner acoustic background noise on strict resting-state fMRI
Provedor de dados: 56
Autores: Rondinoni,C.; Amaro Jr,E.; Cendes,F.; Santos,A.C.dos; Salmon,C.E.G.
Functional MRI (fMRI) resting-state experiments are aimed at identifying brain networks that support basal brain function. Although most investigators consider a ‘resting-state’ fMRI experiment with no specific external stimulation, subjects are unavoidably under heavy acoustic noise produced by the equipment. In the present study, we evaluated the influence of auditory input on the resting-state networks (RSNs). Twenty-two healthy subjects were scanned using two similar echo-planar imaging sequences in the same 3T MRI scanner: a default pulse sequence and a reduced “silent” pulse sequence. Experimental sessions consisted of two consecutive 7-min runs with noise conditions (default or silent) counterbalanced across subjects. A self-organizing group...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Resting-state fMRI; Acoustic noise; Default-mode network; Independent component analysis; Granger causality mapping.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000400359

Propofol exerts anti-inflammatory effects in rats with lipopolysaccharide-induced acute lung injury by inhibition of CD14 and TLR4 expression
Provedor de dados: 56
Autores: Ma,Ling; Wu,Xiu-Ying; Zhang,Li-Hong; Chen,Wei-Min; Uchiyama,Akinori; Mashimo,Takashi; Fujino,Yuji.
We investigated the effect of propofol (Prop) administration (10 mg kg-1 h-1, intravenously) on lipopolysaccharide (LPS)-induced acute lung injury and its effect on cluster of differentiation (CD) 14 and Toll-like receptor (TLR) 4 expression in lung tissue of anesthetized, ventilated rats. Twenty-four male Wistar rats were randomly divided into three groups of 8 rats each: control, LPS, and LPS+Prop. Lung injury was assayed via blood gas analysis and lung histology, and tumor necrosis factor-α (TNF-α) and interleukin-1β (IL-1β) levels were determined in bronchoalveolar lavage fluid using ELISA. Real-time polymerase chain reaction was used to detect CD14 and TLR4 mRNA levels, and CD14 and TLR4 protein expression was determined by Western blot. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: CD14; Toll-like receptors; Propofol; Lipopolysaccharide; Lung injury.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000300299

Molecular adjuvant interleukin-33 enhances the antifertility effect of Lagurus lagurus zona pellucida 3 DNA vaccine administered by the mucosal route
Provedor de dados: 56
Autores: Tu,Y.X.; Li,X.P.; Kadir,Z.; Zhang,F.C.
It has been shown that cytokines can act as molecular adjuvant to enhance the immune response induced by DNA vaccines, but it is unknown whether interleukin 33 (IL-33) can enhance the immunocontraceptive effect induced by DNA vaccines. In the present study, we explored the effects of murine IL-33 on infertility induced by Lagurus lagurus zona pellucida 3 (Lzp3) contraceptive DNA vaccine administered by the mucosal route. Plasmid pcD-Lzp3 and plasmid pcD-mIL-33 were encapsulated with chitosan to generate the nanoparticle chi-(pcD-Lzp3+pcD-mIL-33) as the DNA vaccine. Sixty female ICR mice, divided into 5 groups (n=12/group), were intranasally immunized on days 0, 14, 28, and 42. After intranasal immunization, the anti-LZP3-specific IgG in serum and IgA in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: DNA immunocontraceptive vaccine; Interleukin 33; Intranasal co-immunization; Antifertility effect; Anti-LZP3-specific IgG; Lagurus lagurus.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013001201064

Maternal protein restriction affects gene expression and enzyme activity of intestinal disaccharidases in adult rat offspring
Provedor de dados: 56
Autores: Pinheiro,D.F.; Pacheco,P.D.G.; Alvarenga,P.V.; Buratini Jr,J.; Castilho,A.C.S.; Lima,P.F.; Sartori,D.R.S.; Vicentini-Paulino,M.L.M.
This study investigated the consequences of intrauterine protein restriction on the gastrointestinal tract and particularly on the gene expression and activity of intestinal disaccharidases in the adult offspring. Wistar rat dams were fed isocaloric diets containing 6% protein (restricted, n = 8) or 17% protein (control, n = 8) throughout gestation. Male offspring (n = 5-8 in each group) were evaluated at 3 or 16 weeks of age. Maternal protein restriction during pregnancy produced offspring with growth restriction from birth (5.7 ± 0.1 vs 6.3 ± 0.1 g; mean ± SE) to weaning (42.4 ± 1.3 vs 49.1 ± 1.6 g), although at 16 weeks of age their body weight was similar to control (421.7 ± 8.9 and 428.5 ± 8.5 g). Maternal protein restriction also increased lactase...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: MRNA enzyme abundance; Maternal protein restriction; Disaccharidase activity; Fetal programming.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000300287

Effect of chronic ethanol consumption in female rats subjected to experimental sepsis
Provedor de dados: 56
Autores: Castro,C.L.; Aguiar-Nemer,A.S.; Castro-Faria-Neto,H.C.; Barros,F.R.; Rocha,E.M.S.; Silva-Fonseca,V.A.
The objective of this research was to evaluate the interference of ethanol consumption by female rats with cytokines involved in the sepsis process and its correlation with mortality, the main outcome of sepsis. Female Wistar rats in estrus phase were evaluated in three experiments. Experiment 1 (n=40) was performed to determine survival rates. Experiment 2 (n=69) was designed for biochemical analysis, measurement of cytokine and estrogen levels before and after sepsis, and experiment 3 (n=10) was performed to evaluate bacterial growth by colony counts of peritoneal fluid. In all experiments, treated animals were exposed to a 10% ethanol/water solution (v/v) as the single drinking source, while untreated animals were given tap water. After 4 weeks, sepsis...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alcohol; Sepsis; Cytokines; Estrogens.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013001201033

Chromogenic in situ hybridization compared with other approaches to evaluate HER2/neu status in breast carcinomas
Provedor de dados: 56
Autores: Rosa,F.E.; Santos,R.M.; Rogatto,S.R.; Domingues,M.A.C.
Human epidermal growth factor receptor 2 (HER2) has been evaluated in breast cancer patients to identify those most likely to benefit from herceptin-targeted therapy. HER2 amplification, detected in 20-30% of invasive breast tumors, is associated with reduced survival and metastasis. The most frequently used technique for evaluating HER2 protein status as a routine procedure is immunohistochemistry (IHC). HER2 copy number alterations have also been evaluated by fluorescence in situ hybridization (FISH) in moderate immunoexpression (IHC 2+) cases. An alternative procedure to evaluate gene amplification is chromogenic in situhybridization (CISH), which has some advantages over FISH, including the correlation between HER2 status and morphological features....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: CISH; Breast cancer; HER2; Immunohistochemistry; FISH.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000300207

Developments in the use of nanocapsules in oncology
Provedor de dados: 56
Autores: Yurgel,V.; Collares,T.; Seixas,F.
The application of nanotechnology to medicine can provide important benefits, especially in oncology, a fact that has resulted in the emergence of a new field called Nanooncology. Nanoparticles can be engineered to incorporate a wide variety of chemotherapeutic or diagnostic agents. A nanocapsule is a vesicular system that exhibits a typical core-shell structure in which active molecules are confined to a reservoir or within a cavity that is surrounded by a polymer membrane or coating. Delivery systems based on nanocapsules are usually transported to a targeted tumor site and then release their contents upon change in environmental conditions. An effective delivery of the therapeutic agent to the tumor site and to the infiltrating tumor cells is difficult...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nanotechnology; Nanocapsules; Nanocarriers; Cancer.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000600486

Microbiological, technological and therapeutic properties of kefir: a natural probiotic beverage
Provedor de dados: 58
Autores: Leite,Analy Machado de Oliveira; Miguel,Marco Antonio Lemos; Peixoto,Raquel Silva; Rosado,Alexandre Soares; Silva,Joab Trajano; Paschoalin,Vania Margaret Flosi.
Kefir is a fermented milk beverage produced by the action of bacteria and yeasts that exist in symbiotic association in kefir grains. The artisanal production of the kefir is based on the tradition of the peoples of Caucasus, which has spread to other parts of the world, from the late 19th century, and nowadays integrates its nutritional and therapeutic indications to the everyday food choices of several populations. The large number of microorganisms present in kefir and their microbial interactions, the possible bioactive compounds resulting of microbial metabolism, and the benefits associated with the use this beverage confers kefir the status of a natural probiotic, designated as the 21th century yoghurt. Several studies have shown that kefir and its...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Probiotic; Microbial diversity; Kefir grains; Fermented milk; Kefir.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200001

Detection of toxins A/B and isolation of Clostridium difficile and Clostridium perfringens from dogs in Minas Gerais, Brazil
Provedor de dados: 58
Autores: Silva,Rodrigo Otávio Silveira; Santos,Renata Lara Resende; Pires,Prhiscylla Sadanã; Pereira,Luiz Carlos; Pereira,Silvia Trindade; Duarte,Marina Carvalho; Assis,Ronnie Antunes de; Lobato,Francisco Carlos Faria.
The objective of this study was to detect C. difficileA/B toxins and to isolate strains of C. perfringensand C. difficile from diarrheic and non-diarrheic dogs in Brazil. Stool samples were collected from 57 dogs, 35 of which were apparently healthy, and 22 of which were diarrheic. C. difficileA/B toxins were detected by ELISA, and C. perfringensand C. difficilewere identified by multiplex PCR. C. difficileA/B toxins were detected in 21 samples (36.8%). Of these, 16 (76.2%) were from diarrheic dogs, and five (23.8%) were from non-diarrheic dogs. Twelve C. difficile strains (21.1%) were isolated, of which ten were A+B+and two were A-B-. All non-toxigenic strains were isolated from non-diarrheic animals. The binary toxin gene cdtBwas found in one strain,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nosocomial diarrhea; Small animals; Colitis; Enteritis; Canine.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100019

Salmonelloses in the State of Rio Grande do Sul, southern Brazil, 2002 to 2004
Provedor de dados: 58
Autores: Wagner,Vanessa Rech; Silveira,Josete Baialardi; Tondo,Eduardo Cesar.
Salmonella has been identified as the main aetiological agent responsible for foodborne diseases in several countries worldwide, including Brazil. In the State of Rio Grande do Sul (RS), southern Brazil, previews studies analysed official foodborne illnesses data, identifying Salmonella as the main bacterial agent of foodborne diseases during the period of 1997 to 2001. The present study aimed to analyse the official epidemiological data on salmonelloses occurred in the State of RS, during the period of 2002 to 2004. Even though data on recent salmonelloses were available, only data concerning the period comprising in 2002 to 2004 were analysed because the official worksheet records presented more consistent information about the salmonellosis outbreaks....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Salmonelloses; Brazil; The State of Rio Grande do Sul.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300009

Bovine response to lipoarabinomannan vaccination and challenge with Mycobacterium paratuberculosis
Provedor de dados: 58
Autores: Jolly,Ana; Morsella,Claudia; Bass,Laura; Fiorentino,María Andrea; Paolicchi,Fernando Alberto; Mundo,Silvia Leonor.
This study aimed to evaluate the immune response in bovines following immunization with a mycobaterial Lipoarabinomannan extract (LAMe) and the effect of Map challenge. LAMe vaccine induced specific antibody levels that diminished after the challenge and affected Map excretion at least for 100 days thereafter.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Paratuberculosis; Bovine; LAM; Humoral immune response; Experimental challenge.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200029

Properties of catechol 1,2-dioxygenase in the cell free extract and immobilized extract of Mycobacterium fortuitum
Provedor de dados: 58
Autores: Silva,A.S.; Jacques,R.J.S.; Andreazza,R.; Bento,F.M.; Roesch,L.F.W.; Camargo,F.A.O.
Polycyclic aromatic hydrocarbons (PAH) are carcinogenic compounds which contaminate water and soil, and the enzymes can be used for bioremediation of these environments. This study aimed to evaluate some environmental conditions that affect the production and activity of the catechol 1,2-dioxygenase (C12O) by Mycobacterium fortuitum in the cell free and immobilized extract in sodium alginate. The bacterium was grown in mineral medium and LB broth containing 250 mg L-1 of anthracene (PAH). The optimum conditions of pH (4.0-9.0), temperature (5-70 ºC), reaction time (10-90 min) and the effect of ions in the enzyme activity were determined. The Mycobacterium cultivated in LB shown higher growth and the C12O activity was two-fold higher to that in the mineral...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anthracene; Enzyme activity; Enzyme immobilization; Biodegradation; Waste treatment.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100043

Evaluation of fecal microorganisms of children with cleft palate before and after palatoplasty
Provedor de dados: 58
Autores: Vieira,Narciso Almeida; Borgo,Hilton Coimbra; Dalben,Gisele da Silva; Bachega,Maria Irene; Pereira,Paulo Câmara Marques.
This study isolated and quantified intestinal bacteria of children with cleft palate before and after palatoplasty. A prospective study was conducted from May 2007 to September 2008 on 18 children with cleft palate, aged one to four years, of both genders, attending a tertiary cleft center in Brazil for palatoplasty, to analyze the effect of surgical palate repair on the concentration of anaerobes Bacteroides sp, Bifidobacterium sp and microaerophiles Lactobacillus sp in feces of infants with cleft palate before and 24 hours after treatment with cefazolin for palatoplasty. There was significant reduction of Lactobacillus sp (p &lt; 0.002), Bacteroides sp (p &lt; 0.001) and Bifidobacterium sp (p = 0.021) after palatoplasty, revealing that surgery and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cleft palate; Cleft palate/surgery; Environmental microbiology; Feces; Surgery/plastic.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300026

Carbapenem and cefoxitin resistance of Klebsiella pneumoniae strains associated with porin OmpK36 loss and DHA-1 β-lactamase production
Provedor de dados: 58
Autores: Shi,Weifeng; Li,Kun; Ji,Yun; Jiang,Qinbo; Wang,Yuyue; Shi,Mei; Mi,Zuhuang.
Clinical isolates of carbapenem-resistant Klebsiella pneumoniae (K. pneumoniae) strains are being increased worldwide. Five pan-resistant K. pneumoniae strains have been isolated from respiratory and ICU wards in a Chinese hospital, and reveal strong resistance to all β-lactams, fluoroquinolones and aminoglycosides. Totally 27 β-lactamase genes and 2 membrane pore protein (porin) genes in 5 K. pneumoniae strains were screened by polymerase chain reaction (PCR). The results indicated that all of 5 K. pneumoniae strains carried blaTEM-1 and blaDHA-1 genes, as well as base deletion and mutation of OmpK35 or OmpK36 genes. Compared with carbapenem-sensitive isolates by sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE), the resistant isolates...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Klebsiella pneumoniae; AmpC β-Lactamase; Porin; Molecular biology.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200015

Enhancement of chitosanase production by cell immobilization of Gongronella sp. JG
Provedor de dados: 58
Autores: Zhang,Pingping; Zhou,Wei; Wang,Peng; Wang,Li; Tang,Mingli.
Chitosanase production of Gongronella sp. JG cells immobilized in calcium alginate gel and polyurethane foam was compared with that of the free cells, there was a 60% increase in the enzyme yield (2429 U/L) compared to the highest yield obtained from free cells (1513 U/L). The optimal immobilization parameters (concentrations of sodium alginate, calcium chloride, bead inoculums, bead diameter, etc) for the enhanced production of chitosanase were determined as: sodium alginate 2% (w/v), 0.1 M calcium chloride, inoculum 10 mL beads to 100 mL production media and 2.7 mm bead diameter. Maximum chitosanase production was achieved with initial pH of 5.5 and temperature of 30 ºC. The alginate beads had well stability, retained 85% ability of enzyme production...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chitosanase production; Gongronella sp. JG; Cell immobilization; Sodium alginate.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100029

Susceptibility variation of Malassezia pachydermatis to antifungal agents according to isolate source
Provedor de dados: 58
Autores: Weiler,Caroline Borges; Jesus,Francielli Pantella Kunz de; Nardi,Graziela Habib; Loreto,Érico Silva; Santurio,Janio Morais; Coutinho,Selene Dall'Acqua; Alves,Sydney Hartz.
Malassezia pachydermatisis associated with dermatomycoses and otomycosis in dogs and cats. This study compared the susceptibility of M. pachydermatis isolates from sick (G1) and healthy (G2) animals to azole and polyene antifungals using the M27-A3 protocol. Isolates from G1 animals were less sensitive to amphotericin B, nystatin, fluconazole, clotrimazole and miconazole.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Malassezia pachydermatis; Susceptibility; Antifungal agents.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100026

Essential oils of thyme and Rosemary in the control of Listeria monocytogenes in raw beef
Provedor de dados: 58
Autores: Oliveira,Maíra Maciel Mattos de; Brugnera,Danilo Florisvaldo; Piccoli,Roberta Hilsdorf.
This study was developed in order to evaluate two alternatives for the control of Listeria monocytogenes in raw bovine meat pieces, both based on the use of Thymus vulgaris and Rosmarinus officinalis essential oils (EOs). The antilisterial activity of different concentrations of the EOs was tested in vitro using agar dilution and disk volatilization techniques. In addition, L. monocytogenes was inoculated in meat pieces, which were submerged in edible gelatin coatings containing 2% (v/v) EOs or submitted to the vapor of EOs (0.74 μL.cm-3). L. monocytogenes was quantified after one, 48 and 96 hours of storage (7 °C). In the in vitro tests, the EO of T. vulgaris presented higher activity. The two options used (edible gelatin coating and vapor activity), in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Thymus vulgaris; Rosmarinus officinalis; Antilisterial compounds; Active packaging; Meat safety.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400022

Antifungal activity of extracts from Piper aduncum leaves prepared by different solvents and extraction techniques against dermatophytes Trichophyton rubrum and Trichophyton interdigitale
Provedor de dados: 58
Autores: Santos,Maximillan Leite; Magalhães,Chaiana Froés; Rosa,Marcelo Barcellos da; Santos,Daniel de Assis; Brasileiro,Beatriz Gonçalves; Carvalho,Leandro Machado de; Silva,Marcelo Barreto da; Zani,Carlos Leomar; Siqueira,Ezequias Pessoa de; Peres,Rodrigo Loreto; Andrade,Anderson Assunção.
The effects of different solvents and extraction techniques upon the phytochemical profile and anti-Trichophyton activity of extracts from Piper aduncum leaves were evaluated. Extract done by maceration method with ethanol has higher content of sesquiterpenes and antifungal activity. This extract may be useful as an alternative treatment for dermatophytosis.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antifungal activity; Piper aduncum L.; Dermatophytes; Trichophyton; Extraction techniques.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400035

In vitro activity of disinfectants against Aspergillus spp
Provedor de dados: 58
Autores: Mattei,A.S.; Madrid,I.M.; Santin,R.; Schuch,L.F.D.; Meireles,M.C.A.
Fungi of the Aspergillus genus are widespread and contaminate the environment. Thousands of conidia are released from each phialide and dispersed in the air every day. These fungi are considered important mycose-causing agents in hospitals. Due to this, research to determine prevalent fungi from the Aspergillus genus in hospital environments, and an adequate disinfection program in these areas is are needed. This study evaluated the susceptibility of Aspergillus spp. isolated from a veterinary environment against four disinfectants. Successive dilutions of disinfectants (log2) were used according to CLSI M38-A2 microdilution technique adapted to chemical agents against 18 isolates of this genus. After 72 hours of incubation, the Minimum Inhibiting...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ammonium quaternary; Chlorexidine; Chlorophenol derivative; Filamentous fungi; Sodium hypochlorite.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200024

Virulence profiles of Shiga toxin-producing Escherichia coli and other potentially diarrheagenic E.coli of bovine origin, in Mendoza, Argentina
Provedor de dados: 58
Autores: Pizarro,M.A.; Orozco,J.H.; Degarbo,S.M.; Calderón,A.E.; Nardello,A.L.; Laciar,A.; Rüttler,M.E.
This study described a group of strains obtained from a slaughter house in Mendoza, in terms of their pathogenic factors, serotype, antibiotype and molecular profile. Ninety one rectal swabs and one hundred eight plating samples taken from carcasses of healthy cattle intended for meat consumption were analyzed. Both the swab and the plate samples were processed to analyze the samples for the presence of virulence genes by PCR: stx1, stx2, eae and astA. The Stx positive strains were confirmed by citotoxicity assay in Vero cells. The isolates were subsequently investigated for their O:H serotype, antimicrobial susceptibility and molecular profile by Random Amplification of Polymorphic DNA (RAPD). Twelve E.coli strains were identified by their pathogenicity....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hemolitic Uremic Syndrome (HUS); Shiga Toxin Escherichia coli (STEC); Enteroaggregative Stable toxin (EAST1); Enteropathogenic Escherichia coli (EPEC); Foodborne diseases; Cattle.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400021

Interaction of antimicrobial peptide Plantaricin149a and four analogs with lipid bilayers and bacterial membranes
Provedor de dados: 58
Autores: Lopes,José Luiz de Souza; Hissa,Denise Cavalcante; Melo,Vânia Maria Maciel; Beltramini,Leila Maria.
The amidated analog of Plantaricin149, an antimicrobial peptide from Lactobacillus plantarum NRIC 149, directly interacts with negatively charged liposomes and bacterial membranes, leading to their lysis. In this study, four Pln149-analogs were synthesized with different hydrophobic groups at their N-terminus with the goal of evaluating the effect of the modifications at this region in the peptide's antimicrobial properties. The interaction of these peptides with membrane models, surface activity, their hemolytic effect on red blood cells, and antibacterial activity against microorganisms were evaluated. The analogs presented similar action of Plantaricin149a; three of them with no hemolytic effect (&lt; 5%) until 0.5 mM, in addition to the induction of a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antimicrobial activity antimicrobial peptide calcein leakage; Hemolytic assay.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400038

Microencapsulation of Bifidobacterium animalis subsp. lactis and Lactobacillus acidophilus in cocoa butter using spray chilling technology
Provedor de dados: 58
Autores: Pedroso,D.L.; Dogenski,M.; Thomazini,M.; Heinemann,R.J.B.; Favaro-Trindade,C.S.
In the present study, the cells of Bifidobacterium animalis subsp. lactis (BI-01) and Lactobacillus acidophilus (LAC-04) were encapsulated in cocoa butter using spray-chilling technology. Survival assays were conducted to evaluate the resistance of the probiotics to the spray-chilling process, their resistance to the simulated gastric and intestinal fluids (SGF and SIF), and their stability during 90 days of storage. The viability of the cells was not affected by microencapsulation. The free and encapsulated cells of B. animalis subsp. lactis were resistant to both SGF and SIF. The micro-encapsulated cells of L. acidophilus were more resistant to SGF and SIF than the free cells; the viability of the encapsulated cells was enhanced by 67%, while the free...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Probiotic; Spray cooling; Spray congealing; Lipid matrix; Solid lipid microparticles.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300017

Cashew apple juice as microbial cultivation medium for non-immunogenic hyaluronic acid production
Provedor de dados: 58
Autores: Oliveira,Adriano H.; Ogrodowski,Cristiane C.; Macedo,André C. de; Santana,Maria Helena A.; Gonçalves,Luciana R.B.
In this work, natural cashew apple juice was used as cultivation medium as an alternative to substitute brain heart infusion medium. The effect of aeration and juice supplementation with yeast extract on the production of hyaluronic acid in batch fermentation was also investigated. Similar levels of cell mass were obtained in inoculum using cashew apple juice supplemented with yeast extract or the conventional brain heart infusion medium. Fermentation in Erlenmeyer flasks produced low biomass and hyaluronic acid concentrations. The hyaluronic acid concentration and viscosity increased from 0.15 g/L and 3.87 cP (no aeration or medium supplementation) to 1.76 g/L and 107 cP, when aeration (2 vvm) and 60 g/L of yeast extract were used. The results suggest the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hyaluronic acid; Cashew apple juice; Submerged fermentation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400011

Applications of recombinant Pichia pastoris in the healthcare industry
Provedor de dados: 58
Autores: Weinacker,Daniel; Rabert,Claudia; Zepeda,Andrea B.; Figueroa,Carolina A.; Pessoa,Adalberto; Farías,Jorge G.
Since the 1970s, the establishment and development of the biotech industry has improved exponentially, allowing the commercial production of biopharmaceutical proteins. Nowadays, new recombinant protein production is considered a multibillion-dollar market, in which about 25% of commercial pharmaceuticals are biopharmaceuticals. But to achieve a competitive production process is not an easy task. Any production process has to be highly productive, efficient and economic. Despite that the perfect host is still not discovered, several research groups have chosen Pichia pastoris as expression system for the production of their protein because of its many features. The attempt of this review is to embrace several research lines that have adopted Pichia...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Yeast; Heterologous expression system; Recombinant protein; Production; Scale up.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400004

Colonization and plant growth promoting characterization of endophytic Pseudomonas chlororaphis strain Zong1 isolated from Sophora alopecuroides root nodules
Provedor de dados: 58
Autores: Zhao,Long Fei; Xu,Ya Jun; Ma,Zhan Qiang; Deng,Zhen Shan; Shan,Chang Juan; Wei,Ge Hong.
The endophytic strain Zong1 isolated from root nodules of the legume Sophora alopecuroides was characterized by conducting physiological and biochemical tests employing gfp-marking, observing their plant growth promoting characteristics (PGPC) and detecting plant growth parameters of inoculation assays under greenhouse conditions. Results showed that strain Zong1 had an effective growth at 28 ºC after placed at 4-60 ºC for 15 min, had a wide range pH tolerance of 6.0-11.0 and salt tolerance up to 5% of NaCl. Zong1 was resistant to the following antibiotics (µg/mL): Phosphonomycin (100), Penicillin (100) and Ampicillin (100). It could grow in the medium supplemented with 1.2 mmol/L Cu, 0.1% (w/v) methylene blue and 0.1-0.2% (w/v) methyl red, respectively....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: PGPC; Endophyte; The gpf-marker; Colonization; Co-inoculation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200043

Characterization of antibiotic resistance in Salmonella enterica isolates determined from ready-to-eat (RTE) salad vegetables
Provedor de dados: 58
Autores: Taban,Birce Mercanoglu; Aytac,Sait Aykut; Akkoc,Nefise; Akcelik,Mustafa.
In the last decade, ready-to-eat (RTE) salad vegetables are gaining increasing importance in human diet. However, since they are consumed fresh, inadequate washing during processing can bring on some foodborne illnesses, like salmonellosis, since these food items have natural contamination from soil and water. During 2009-2010, a total of 81 samples were purchased arbitrarily from local markets in Ankara, and were examined for Salmonella contamination. Salmonella screening was performed by using anti-Salmonella magnetic beads system and polymerase chain reaction (PCR) identification of the suspected colonies. Then, the antibiotic resistance profiles of four Salmonella strains identified (strains RTE-1, RTE-2, RTE-3, and RTE-4) were also investigated, since...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Contamination; Plasmid-mediated sulfonamide resistance; Ready-to-eat salad vegetables; Food safety; Salmonella.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200007

Characterization of a virulent Leptospira interrogans strain isolated from an abandoned swimming pool
Provedor de dados: 58
Autores: Forster,Karine M.; Hartwig,Daiane D.; Seixas,Fabiana K.; McBride,Alan J.A.; Monte,Leonardo G.; Recuero,Ana Lúcia C.; Brod,Claudiomar S.; Hartleben,Cláudia P.; Amaral,Marta; Dellagostin,Odir A.
Pathogenic Leptospira spp. are the etiological agents of leptospirosis, an important disease of both humans and animals. In urban settings, L. interrogans serovars are the predominant cause of disease in humans. The purpose of this study was to characterize a novel Leptospira isolate recovered from an abandoned swimming pool. Molecular characterization through sequencing of the rpoB gene revealed 100% identity with L. interrogans and variable-number tandem-repeat (VNTR) analysis resulted in a banding pattern identical to L. interrogans serogroup Icterohaemorrhagiae, serovar Copenhageni or Icterohaemorrhagiae. The virulence of the strain was determined in a hamster model of lethal leptospirosis. The lethal dose 50% (LD50) was calculated to be two...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Leptospira; Leptospirosis; Virulent; VNTR; RpoB.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100024

Incidence and transferability of antibiotic resistance in the enteric bacteria isolated from hospital wastewater
Provedor de dados: 58
Autores: Alam,Mohammad Zubair; Aqil,Farrukh; Ahmad,Iqbal; Ahmad,Shamim.
This study reports the occurrence of antibiotic resistance and production of β-lactamases including extended spectrum beta-lactamases (ESβL) in enteric bacteria isolated from hospital wastewater. Among sixty-nine isolates, tested for antibiotic sensitivity, 73.9% strains were resistant to ampicillin followed by nalidixic acid (72.5%), penicillin (63.8%), co-trimoxazole (55.1%), norfloxacin (53.6%), methicillin (52.7%), cefuroxime (39.1%), cefotaxime (23.2%) and cefixime (20.3%). Resistance to streptomycin, chloramphenicol, nitrofurantoin, tetracycline, and doxycycline was recorded in less than 13% of the strains. The minimum inhibitory concentration (MIC) showed a high level of resistance (800-1600 µg/mL) to one or more antibiotics. Sixty three (91%)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Beta-lactamase; ESβL; Antibiotic resistance; Enteric bacteria; Plasmid transfer.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300021

Occurrence of zearalenone in wheat- and corn-based products commercialized in the State of Paraná, Brazil
Provedor de dados: 58
Autores: Almeida-Ferreira,Giovanna Caputo; Barbosa-Tessmann,Ione Parra; Sega,Rose; Machinski Junior,Miguel.
The productivity of wheat and corn crops depends on climatic conditions and resistance against phytopathogenic fungi such as those of the genus Fusarium. Some species of this genus produce zearalenone (ZEA), a mycotoxin with hyperestrogenic effects. The objective of this study was to investigate the presence of ZEA in samples of cracked wheat (n = 109), popcorn (n = 51) and corn grits (n = 50) commercialized in the State of Paraná, Brazil. Commercial samples of each crop were collected between September 2007 and June 2008 and analyzed by thin-layer chromatography. The method used for detection of the mycotoxin in wheat and corn derivatives presented a recovery rate of 94.5% and 99.5%, respectively, detection limit of 40 μg.kg-1 and quantification limit of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Wheat; Corn; Zearalenone; Thin-layer chromatography; Mycotoxins.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200005

The influences of fish infusion broth on the biogenic amines formation by lactic acid bacteria
Provedor de dados: 58
Autores: Küley,Esmeray; Özogul,Fatih; Balikçi,Esra; Durmus,Mustafa; Ayas,Deniz.
The influences of fish infusion decarboxylase broth (IDB) on biogenic amines (BA) formation by lactic acid bacteria (LAB) were investigated. BA productions by single LAB strains were tested in five different fish (anchovy, mackerel, white shark, sardine and gilthead seabream) IDB. The result of the study showed that significant differences in ammonia (AMN) and BA production were observed among the LAB strains in fish IDB (p &lt; 0.05). The highest AMN and TMA production by LAB strains were observed for white shark IDB. The all tested bacteria had decarboxylation activity in fish IDB. The uppermost accumulated amines by LAB strains were tyramine (TYM), dopamine, serotonin and spermidine. The maximum histamine production was observed in sardine (101.69 mg/L)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biogenic amines; Lactic acid bacteria; Starter cultures; Fish infusion broth.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200010

Chemical and botanical characterization of Chilean propolis and biological activity on cariogenic bacteria Streptococcus mutans and Streptococcus sobrinus
Provedor de dados: 58
Autores: Barrientos,Leticia; Herrera,Christian L.; Montenegro,Gloria; Ortega,Ximena; Veloz,Jorge; Alvear,Marysol; Cuevas,Alejandro; Saavedra,Nicolás; Salazar,Luis A.
Propolis is a non-toxic natural substance with multiple pharmacological properties including anticancer, antioxidant, fungicidal, antibacterial, antiviral, and anti-inflammatory among others. The aim of this study was to determine the chemical and botanical characterization of Chilean propolis samples and to evaluate their biological activity against the cariogenic bacteria Streptococcus mutans and Streptococcus sobrinus. Twenty propolis samples were obtained from beekeeping producers from the central and southern regions of Chile. The botanical profile was determined by palynological analysis. Total phenolic contents were determined using colorimetric assays. Reverse phase HPLC and HPLC-MS were used to determine the chemical composition. The minimum...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Propolis; Botanical characterization; Chemical characterization; Streptococcus mutans; Streptococcus sobrinus.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200038

Influence of fructooligosaccharides on the fermentation profile and viable counts in a symbiotic low fat milk
Provedor de dados: 58
Autores: Oliveira,Ricardo P.S.; Casazza,Alessandro A.; Aliakbarian,Bahar; Perego,Patrizia; Converti,Attilio; Oliveira,Maricê N.
This study evaluated the effects of prebiotics on fermentation profile and growth of Lactobacillus acidophilus, Lactobacillus bulgaricus, Lactobacillus rhamnosus, and Bifidobacterium lactis in co-cultures with Streptococcus thermophilus. Acidification rate and viability were positively influenced by the co-culture with B. lactis and by both inulin or oligofructose in low fat milk.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Lactobacillus; Bifidobacterium; Fructooligosaccharide; Fermented milk.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200014

Fusarium species and fumonisins associated with maize kernels produced in Rio Grande do Sul State for the 2008/09 and 2009/10 growing seasons
Provedor de dados: 58
Autores: Stumpf,R.; Santos,J. dos; Gomes,L.B.; Silva,C.N.; Tessmann,D.J.; Ferreira,F.D.; Machinski Junior,M.; Del Ponte,E.M.
Ear rots caused by Fusarium spp. are among the main fungal diseases that contribute to poor quality and the contamination of maize grains with mycotoxins. This study aimed to determine the visual incidence of fungal-damaged kernels (FDKs), the incidence of two main Gibberella (a teleomorph of Fusarium) complexes (G. fujikuroi and G. zeae) associated with maize using a seed health blotter test, and the fumonisin levels, using high performance liquid chromatography, in samples of maize grains grown across 23 municipalities during the 2008/09 and 2009/10 growing seasons. Additionally, 104 strains that were representative of all of the analysed samples were identified to species using PCR assays. The mean FDK was seven per cent, and only six of the samples had...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fusarium graminearum; Fusarium verticillioides; Fumonisins; Zea mays L.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100012

Teat papillomatosis associated with bovine papillomavirus types 6, 7, 9, and 10 in dairy cattle from Brazil
Provedor de dados: 58
Autores: Tozato,Claudia C.; Lunardi,Michele; Alfieri,Alice F.; Otonel,Rodrigo A.A.; Di Santis,Giovana W.; Alcântara,Brígida K. de; Headley,Selwyn A.; Alfieri,Amauri A.
This study describes the clinical, histopathological, and virological characterization of teat papillomatosis from Brazilian dairy cattle herds. Four types of bovine papillomavirus were identified (BPV6, 7, 9, and 10); one of these (BPV7) is being detected for the first time in Brazilian cattle.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Papilloma; BPV; Genotyping.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300039

In vitro detection of pathogenic Listeria monocytogenes from food sources by conventional, molecular and cell culture method
Provedor de dados: 58
Autores: Khan,J.A.; Rathore,R.S.; Khan,S.; Ahmad,I.
Among current in vitro methods for identification of pathogenic Listeria monocytogenes (L. monocytogenes) rely on growth in culture media, followed by isolation, and biochemical and serological identification. Now PCR (Polymerase Chain Reaction) has been used for the rapid, sensitive and specific detection of pathogenic L. monocytogenes. The pathogenicity of the organism is highly correlated with haemolytic factor known as listeriolysin O (LLO). A total of 400 samples from meat and 250 samples from raw milk and their products were collected from various local dairy farms, dairy units and butcheries in Bareilly, India. Pure isolates of L. monocytogenes obtained after enrichment in Buffered Listeria enrichment broth (BLEB) followed by plating onto Listeria...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: L. monocytogenes; Haemolysis; PCR; Vero cytotoxicity.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300013

Investigation of the association between clinical outcome and the cag pathogenicity-island and other virulence genes of Helicobacter pylori isolates from patients with dyspepsia in Eastern Turkey
Provedor de dados: 58
Autores: Ozbey,Gokben; Demirel,Ulvi; Aygun,Cem; Ertas,Hasan Basri.
The aims of our work were to determine the presence of the cag pathogenicity-island (cag PAI) and other virulence genes of Helicobacter pylori recovered from patients with gastritis and peptic ulcer, and to investigate the correlation of these virulence genes with clinical outcome. The presence of the cagA, the promoter regions of cagA, cagE, cagT, and the left end of cag-PAI (LEC), cag right junction (cagRJ), the plasticity region open reading frames (ORFs), vacA and oipA genes among 69 H. pylori isolates were determined by polymerase chain reaction. Intact cag PAI was detected in only one (1.4%) isolate. The cagA gene was identified in 52.1% and 76.2% of isolates from patients with dyspepsia (gastritis and peptic ulcer), respectively. The plasticity...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Helicobacter pylori; Gastritis; Peptic ulcer; Cag pathogenicity-island; Polymerase chain reaction.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400034

Ochratoxigenic fungi associated with green coffee beans (Coffea arabica L.) in conventional and organic cultivation in Brazil
Provedor de dados: 58
Autores: Rezende,Elisângela de Fátima; Borges,Josiane Gonçalves; Cirillo,Marcelo Ângelo; Prado,Guilherme; Paiva,Leandro Carlos; Batista,Luís Roberto.
The genera Aspergillus comprises species that produce mycotoxins such as aflatoxins, ochratoxins and patulin. These are cosmopolitan species, natural contaminants of agricultural products. In coffee grains, the most important Aspergillus species in terms of the risk of presenting mycotoxins belong to the genera Aspergillus Section Circumdati and Section Nigri. The purpose of this study was to assess the occurrence of isolated ochratoxigenic fungi of coffee grains from organic and conventional cultivation from the South of Minas Gerais, Brazil, as well as to evaluate which farming system presents higher contamination risk by ochratoxin A (OTA) produced by fungi. Thirty samples of coffee grains (Coffea arabica L.) were analysed, being 20 of them of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aspergillus ochraceus; Ochratoxin A; Arabica coffee.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200006

Detection of CDT toxin genes in Campylobacter spp. strains isolated from broiler carcasses and vegetables in São Paulo, Brazil
Provedor de dados: 58
Autores: Carvalho,Aline Feola de; Silva,Daniela Martins da; Azevedo,Sergio Santos; Piatti,Rosa Maria; Genovez,Margareth Elide; Scarcelli,Eliana.
Campylobacteriosis is a worldwide distributed zoonosis. One of the main virulence factors related to Campylobacter spp. in animals and humans is the cytolethal distending toxin (CDT), encoded by three adjacent genes (cdtA, cdtB, cdtC). The occurrence of Campylobacter spp. in samples of vegetables has not been reported in Brazil yet, and has seldom been described in the international literature. The detection of CDT in these strains has not been reported, either. The objectives of the present study were to determine the occurrence of Campylobacter spp. strains carrying virulence factors in samples of poultry and vegetables (lettuce and spinach) from different points of sale, thus verifying if vegetables are as an important vehicle for potentially virulent...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Campylobacter spp.; Cytolethal distending toxin (CDT); Broiler carcasses; Vegetables; Multiplex-PCR.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300005

Endo-and exoglucanase activities in bacteria from mangrove sediment
Provedor de dados: 58
Autores: Soares Júnior,Fábio Lino; Dias,Armando Cavalcante Franco; Fasanella,Cristiane Cipola; Taketani,Rodrigo Gouvêa; Lima,André Oliveira de Souza; Melo,Itamar Soares; Andreote,Fernando Dini.
The mangrove ecosystem is an unexplored source for biotechnological applications. In this unique environment, endemic bacteria have the ability to thrive in the harsh environmental conditions (salinity and anaerobiosis), and act in the degradation of organic matter, promoting nutrient cycles. Thus, this study aimed to assess the cellulolytic activities of bacterial groups present in the sediment from a mangrove located in Ilha do Cardoso (SP, Brazil). To optimize the isolation of cellulolytic bacteria, enrichments in two types of culture media (tryptone broth and minimum salt medium), both supplemented with 5% NaCl and 1% of cellulose, were performed. Tests conducted with the obtained colonies showed a higher occurrence of endoglycolytic activity (33...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cellulose endo-1; 4-β-D-glucanase exo-1; 4-β-D-glucanase salinity.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300048

Extracellular polysaccharide production by a strain of Pleurotus djamor isolated in the south of Brazil and antitumor activity on Sarcoma 180
Provedor de dados: 58
Autores: Borges,Gisele Martini; De Barba,Fabiana Figueredo Molin; Schiebelbein,Ana Paula; Pereira,Bruna Parmezzani; Chaves,Mariane Bonatti; Silveira,Marcia Luciane Lange; Pinho,Mauro Souza Leite; Furlan,Sandra Aparecida; Wisbeck,Elisabeth.
Polysaccharides with medicinal properties can be obtained from fruiting bodies, mycelium and culture broth of several fungus species. This work was carried out in batch culture using a stirred tank reactor with two different initial glucose concentrations (40-50 g/L) and pH values (3.0-4.0) to enhance extracellular polysaccharides production by Pleurotus djamor UNIVILLE 001 and evaluate antitumor effect of intraperitonial administration of Pleurotus djamor extract on sarcoma 180 animal model. According to factorial design, the low pH value (pH 3.0) led to a gain of 1.6 g/L on the extracellular polysaccharide concentration, while glucose concentration in the tested range had no significant effect on the concentration of polysaccharide. With 40 g/L initial...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pleurotus djamor; Extracellular polysaccharides production; Antitumor activity.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400006

Microbiologically induced deterioration of concrete: a review
Provedor de dados: 58
Autores: Wei,Shiping; Jiang,Zhenglong; Liu,Hao; Zhou,Dongsheng; Sanchez-Silva,Mauricio.
Microbiologically induced deterioration (MID) causes corrosion of concrete by producing acids (including organic and inorganic acids) that degrade concrete components and thus compromise the integrity of sewer pipelines and other structures, creating significant problems worldwide. Understanding of the fundamental corrosion process and the causal agents will help us develop an appropriate strategy to minimize the costs in repairs. This review presents how microorganisms induce the deterioration of concrete, including the organisms involved and their colonization and succession on concrete, the microbial deterioration mechanism, the approaches of studying MID and safeguards against concrete biodeterioration. In addition, the uninvestigated research area of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microbial deterioration; Concrete corrosion; Biogenic sulfuric acid.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400001

Copper resistance of different ectomycorrhizal fungi such as Pisolithus microcarpus, Pisolithus sp., Scleroderma sp. and Suillus sp.
Provedor de dados: 58
Autores: Silva,R.F.; Lupatini,M.; Trindade,L.; Antoniolli,Z.I.; Steffen,R.B.; Andreazza,R.
Environments contaminated with heavy metals negatively impact the living organisms. Ectomy­corrhizal fungi have shown important role in these impacted sites. Thus, this study aimed to evaluate the copper-resistance of ectomycorrhizal fungi isolates Pisolithus microcarpus - UFSC-Pt116; Pisolithus sp. - UFSC-PT24, Suillus sp. - UFSM RA 2.8 and Scleroderma sp. - UFSC-Sc124 to different copper doses in solid and liquid media. The copper doses tested were: 0.00, 0.25, 0.5, 0.75, 1.0 and 1.25 mmol L-1 in the solid medium and 0.00, 0.32, 0.64 and 0.96 mmol L-1 in the liquid medium. Copper was amended as copper sulphate in order to supplement the culture medium MNM at pH 4.8, with seven replicates to each fungus-dose combination. The fungal isolates were incubated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ectomycorrhizal fungus; Copper-resistance; Pisolithus microcarpus; Pisolithus sp.; Scleroderma sp.; Suillus sp.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200042

Epicoccum nigrum and Cladosporium sp. for the treatment of oily effluent in an air-lift reactor
Provedor de dados: 58
Autores: Queissada,Daniel Delgado; Silva,Flávio Teixeira da; Penido,Juliana Sundfeld; Siqueira,Carolina Dell'Aquila; Paiva,Tereza Cristina Brazil de.
The metalworking industry is responsible for one of the most complex and difficult to handle oily effluents. These effluents consist of cutting fluids, which provide refrigeration and purification of metallic pieces in the machining system. When these effluents are biologically treated, is important to do this with autochthonous microorganisms; the use of these microorganisms (bioaugmentation) tends to be more efficient because they are already adapted to the existing pollutants. For this purpose, this study aimed to use two indigenous microorganisms, Epicoccum nigrum and Cladosporium sp. for metalworking effluent treatment using an air-lift reactor; the fungus Aspergillus niger (laboratory strain) was used as a reference microorganism. The original...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Epicoccum nigrum; Cladosporium sp.; Metalworking effluent; Air-lift reactor.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200041

Microbiota and anthropic interference on antimicrobial resistance profile of bacteria isolated from Brazilian maned-wolf (Chrysocyon brachyurus)
Provedor de dados: 58
Autores: Vieira-da-Motta,Olney; Eckhardt-de-Pontes,Luiz Antonio; Petrucci,Melissa Paes; Santos,Israel Pereira dos; Cunha,Isabel Candia Nunes da; Morato,Ronaldo Gonçalves.
Both the study of Brazilian wild mammal fauna and the conditions that foster the preservation of endangered species, such as Brazilian Maned-wolf (Chrysocyon brachyurus), in wild life are of extreme importance. In order to study the resistance profile of microbiota bacterial colonizing Brazilian Maned-wolf, this work investigated samples from eight male captive and free roaming animals originating from different Brazilian geographical regions. Samples for microbiological purposes were collected with swabs and kept in appropriate transport medium. Using routine microbiological techniques, the isolated bacteria were tested toward antimicrobial drugs by the agar disk diffusion method. Results showed that all samples from wild animals were sensitive toward all...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Maned-wolf; Chrysocyon brachyurus; Microbiota; Antimicrobial resistance; Anthropic pressure; Environment.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400042

Efficient production of lignocellulolytic enzymes xylanase, β-xylosidase, ferulic acid esterase and β-glucosidase by the mutant strain Aspergillus awamori 2B.361 U2/1
Provedor de dados: 58
Autores: Gottschalk,Leda Maria Fortes; Paredes,Raquel de Sousa; Teixeira,Ricardo Sposina Sobral; Silva,Ayla Sant'Ana da; Bon,Elba Pinto da Silva.
The production of xylanase, β-xylosidase, ferulic acid esterase and β-glucosidase by Aspergillus awamori 2B.361 U2/1, a hyper producer of glucoamylase and pectinase, was evaluated using selected conditions regarding nitrogen nutrition. Submerged cultivations were carried out at 30 ºC and 200 rpm in growth media containing 30 g wheat bran/L as main carbon source and either yeast extract, ammonium sulfate, sodium nitrate or urea, as nitrogen sources; in all cases it was used a fixed molar carbon to molar nitrogen concentration of 10.3. The use of poor nitrogen sources favored the accumulation of xylanase, β-xylosidase and ferulic acid esterase to a peak concentrations of 44,880; 640 and 118 U/L, respectively, for sodium nitrate and of 34,580, 685 and 170...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aspergillus awamori 2B.361 U2/1; Cellulases; Hemicellulases; Β-glucosidase; Nitrogen nutrition.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200037

Occurrence of Brettanomyces/Dekkera in Brazilian red wines and its correlation with ethylphenols
Provedor de dados: 58
Autores: Ávila,Larissa Dias de; Ayub,Marco Antônio Záchia.
The yeast Brettanomyces/Dekkeracan cause important spoilage in wines, with the production of ethylphenols and other off-flavor compounds. This study aimed at determining the presence of this yeast and the ethylphenols produced by them in Brazilian red wines, establishing their relationship with other chemical characteristics. Isolates of Brettanomyces/Dekkerawere quantified by plating 126 samples of dry red wine in selective culture medium, while ethylphenols were analyzed by solid phase extraction and GC/FID. Free and total SO2, alcohol, total dry extract, residual sugar, total and volatile acidity, and pH were also determined. Brettanomyces/Dekkerawas present in 27% of samples. Ethylphenols were detected in most samples, with amounts higher than the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brettanomyces; Dekkera; 4-ethylphenol; 4-ethylguaiacol; Wine.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100011

Human coronavirus ocurrence in different populations of Sao Paulo: a comprehensive nine-year study using a pancoronavirus RT-PCR assay
Provedor de dados: 58
Autores: Cabeça,Tatiane K.; Passos,Ana Maria; Granato,Celso; Bellei,Nancy.
Human coronaviruses (HCoVs) are considered one of the most common respiratory viruses associated with respiratory tract illnesses. An emergent human coronavirus was identified as the causal agent of an epidemic of severe acute respiratory syndrome (SARS) during 2002-2003. The severity of the disease combined with its rapid spread requires the continuous surveillance of coronaviruses in worldwide populations. Epidemiological and clinical data of HCoVs infectious in the Brazilian population are scarce and restricted to one or two groups of patients. Our study aimed to investigate retrospectively the presence of HCoVs in different populations of São Paulo presenting acute respiratory tract infections (ARIs) during the years of 2001-2010. A pancoronavirus...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Human coronaviruses; Epidemiology; Respiratory tract illness; Pancoronavirus RT-PCR.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100049

Commercially laid eggs vs. discarded hatching eggs: contamination by Salmonella spp
Provedor de dados: 58
Autores: Kottwitz,Luciana B.M.; Leão,Joice Aparecida; Back,Alberto; Rodrigues,Dalia dos P.; Magnani,Marciane; Oliveira,Tereza C.R.M. de.
Salmonella enterica is frequently associated with outbreaks of human salmonellosis, and products of avian origin, such as eggs and chicken meat, are the main vehicles of its transmission. The present study describes the occurrence of different serovars of Salmonella enterica and phagotypes of S. enterica serovar Enteritidis in eggs destined for human consumption. Four thousand eggs obtained from commercial egg laying farms and one thousand discarded hatching eggs from broiler farms, which were acquired at farmers' markets and informal shops, were analyzed. Salmonella spp. was isolated from 52.0% of the discarded hatching eggs, in which the predominant serovar was Enteritidis (84.6%), and the predominant Salmonella Enteritidis phagotype (PT) was PT7...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Discarded eggs; Salmonella Enteritidis; Antimicrobial resistance; Salmonellosis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200004

Analysis of moisture content, acidity and contamination by yeast and molds in Apis mellifera L. honey from central Brazil
Provedor de dados: 58
Autores: Ananias,Karla Rubia; Melo,Adriane Alexandre Machado de; Moura,Celso José de.
The development of mold of environmental origin in honey affects its quality and leads to its deterioration, so yeasts and molds counts have been used as an important indicator of hygiene levels during its processing, transportation and storage. The aim of this study was to evaluate the levels of yeasts and molds contamination and their correlation with moisture and acidity levels in Apis mellifera L. honey from central Brazil. In 20% of the samples, the yeasts and molds counts exceeded the limit established by legislation for the marketing of honey in the MERCOSUR, while 42.8% and 5.7% presented above-standard acidity and moisture levels, respectively. Although samples showed yeasts and molds counts over 1.0 x 10² UFC.g-1, there was no correlation between...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Honey; Apis mellifera L.; Quality.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300003

Measuring of Mycobacterium tuberculosis growth: a correlation of the optical measurements with colony forming units
Provedor de dados: 58
Autores: Peñuelas-Urquides,Katia; Villarreal-Treviño,Licet; Silva-Ramírez,Beatriz; Rivadeneyra-Espinoza,Liliana; Said-Fernández,Salvador; León,Mario Bermúdez de.
The quantification of colony forming units (cfu), turbidity, and optical density at 600 nm (OD600) measurements were used to evaluate Mycobacterium tuberculosis growth. Turbidity and OD600 measurements displayed similar growth curves, while cfu quantification showed a continuous growth curve. We determined the cfu equivalents to McFarland and OD600 units.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Bacterial growth; Colony forming units; McFarland; Mycobacterium tuberculosis; Optical density.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100042

Prevalence of the paa gene (porcine attaching and effacing associated) in porcine enteropathogenic Escherichia coli (PEPEC) associated with postweaning diarrhea in south Brazil
Provedor de dados: 58
Autores: Vidotto,Marilda C.; Florian,Elaine C.T.; Ono,Mario A.
Paa (porcine attaching and effacing associated) may be an important virulence factor E. coli of piglets with diarrhea. This study showed for the first time in Brazil the prevalence of the paa gene (22%) in E. coli strains isolated from piglets and these isolates also harboured genes for other adhesins and toxins LT II, STa and STb.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Escherichia coli; Pig; PEPEC; Paa gene; Postweaning diarrhea.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200030

Detection of Ureaplasma spp. in semen samples from sheep in Brazil
Provedor de dados: 58
Autores: Santos,Sandra Batista dos; Souza Neto,Orestes Luiz de; Albuquerque,Pedro Paulo Feitosa de; Mota,André da Rocha; Kim,Pomy de Cássia Peixoto; Moraes,Érica Paes Barreto Xavier de; Nascimento,Elmiro Rosendo do; Mota,Rinaldo Aparecido.
A study was conducted to verify the presence of mycoplasmas and ureaplasmas DNA in sheep semen samples from the State of Pernambuco. The PCR assay was conducted of according with standard protocols with generic primers. Mollicutes DNA was detected in 26.0% and Ureaplasma spp. in 12.0% of semen samples.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mycoplasmas; Reproduction diseases; Semen; Sheep.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300040

Biological characteristics and probiotic effect of Leuconostoc lactis strain isolated from the intestine of black porgy fish
Provedor de dados: 58
Autores: Zhang,Wei; Liu,Mingqi; Dai,Xianjun.
A strain of lactic acid bacteria, Leuconostoc lactis, was isolated from the intestinal tract of black porgy, Sparus macrocephalus, and identified by conventional biochemical characteristics and 16S rDNA gene sequence analysis. The isolated strain had the ability of bile tolerance and resistance to low pH, and survived well in the trypsinase and pepsin solution. But the highly concentrated dose of trypsinase and pepsin affect the viability of the isolated strain. The isolate was resistant to several antibiotics, including Cephalothin, Ceftriaxone, Imipenem and Tobramycin. The isolate could autoaggregate itself and coaggregate with other bacteria in vitro. The autoaggregation percentage increased to 23.29% after 20 h of incubation. The percentage of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Black porgy; Leuconostoc lactis; Lactic acid bacteria; Biological characteristic; Probiotic.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300004

Computation of interactive effects and optimization of process parameters for alkaline lipase production by mutant strain of Pseudomonas aeruginosa using response surface methodology
Provedor de dados: 58
Autores: Bisht,Deepali; Yadav,Santosh Kumar; Darmwal,Nandan Singh.
Alkaline lipase production by mutant strain of Pseudomonas aeruginosa MTCC 10,055 was optimized in shake flask batch fermentation using response surface methodology. An empirical model was developed through Box-Behnken experimental design to describe the relationship among tested variables (pH, temperature, castor oil, starch and triton-X-100). The second-order quadratic model determined the optimum conditions as castor oil, 1.77 mL.L-1; starch, 15.0 g.L-1; triton-X-100, 0.93 mL.L-1; incubation temperature, 34.12 ºC and pH 8.1 resulting into maximum alkaline lipase production (3142.57 U.mL-1). The quadratic model was in satisfactory adjustment with the experimental data as evidenced by a high coefficient of determination (R²) value (0.9987). The RSM...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alkaline lipase; Box-Behnken design; Pseudomonas aeruginosa; Response surface methodology.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100035

Phenotypic and genotypic characterization of Streptococcus agalactiae in pregnant women: first study in a province of Argentina
Provedor de dados: 58
Autores: Oviedo,P; Pegels,E; Laczeski,M; Quiroga,M; Vergara,M.
Group B Streptococcus (GBS) is the leading cause of neonatal infections. Our purpose was to characterize GBS colonization in pregnant women, current serotypes, resistance phenotypes and genes associated with virulence. In Misiones, Argentina, there are no previous data on this topic. Vaginal-rectal swabs from 3125 pregnant women were studied between 2004 and 2010. GBS strains were identified by conventional and serological methods (Phadebact Strep B Test, ETC International, Bactus AB, Sweden). Serotypes were detected using Strep-B Latex (Statens Serum Institut, Denmark). Resistance phenotypes were determined by the double-disk test. Genes were studied by PCR. Maternal colonization was 9.38%. Resistance to erythromycin was 11.6%, and the constitutive...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Colonization; Serotypes; Phenotypes; Virulence genes.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100036

Effect of alcohols on filamentation, growth, viability and biofilm development in Candida albicans
Provedor de dados: 58
Autores: Chauhan,Nitin M; Shinde,Ravikumar B; Karuppayil,S. Mohan.
In this study we report the potential of alcohols as morphogenetic regulators in Candida albicans. All the alcohols tested influenced various modes of growth like planktonic as well as biofilm forms. Viability was affected at high concentrations. Among the alcohols, the response of C. albicans to amyl alcohol (pentanol) was noteworthy. Amyl alcohol at a concentration 0.5% which was not inhibitory to growth and viability specifically inhibited morphogenetic switching from yeast to hyphal forms. It also inhibited normal biofilm development favoring yeast dominated biofilms. Based on this study we hypothesize that alcohols produced under anaerobic conditions may not favor biofilm development and support dissemination of yeast cells. Since anaerobic conditions...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alcohols; Signalling; Morphogenesis; Biofilms; Yeast metabolism; Candida albicans.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400041

Optimizing a culture medium for biomass and phenolic compounds production using Ganoderma lucidum
Provedor de dados: 58
Autores: Zárate-Chaves,Carlos Andrés; Romero-Rodríguez,María Camila; Niño-Arias,Fabián Camilo; Robles-Camargo,Jorge; Linares-Linares,Melva; Rodríguez-Bocanegra,María Ximena; Gutiérrez-Rojas,Ivonne.
The present work was aimed at optimizing a culture medium for biomass production and phenolic compounds by using Ganoderma lucidum. The culture was optimized in two stages; a Plackett-Burman design was used in the first one for identifying key components in the medium and a central composite design was used in the second one for optimizing their concentration. Both responses (biomass and phenolic compounds) were simultaneously optimized by the latter methodology regarding desirability, and the optimal concentrations obtained were 50.00 g/L sucrose, 13.29 g/L yeast extract and 2.99 g/L olive oil. Maximum biomass production identified in these optimal conditions was 9.5 g/L and that for phenolic compounds was 0.0452 g/L, this being 100% better than that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Medium optimization; Ganoderma lucidum; Plackett-Burman; Central composite design; Phenolic compounds.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100032

Semi-scale production of PHAs from waste frying oil by Pseudomonas fluorescens S48
Provedor de dados: 58
Autores: Gamal,Rawia F.; Abdelhady,Hemmat M.; Khodair,Taha A.; El-Tayeb,Tarek S.; Hassan,Enas A.; Aboutaleb,Khadiga A.
The present study aimed at developing a strategy to improve the volumetric production of PHAs by Pseudomonas fluorescens S48 using waste frying oil (WFO) as the sole carbon source. For this purpose, several cultivations were set up to steadily improve nutrients supply to attain high cell density and high biopolymer productivity. The production of PHAs was examined in a 14 L bioreactor as one-stage batch, two-stage batch, and high-cell-density fed-batch cultures. The highest value of polymer content in one-stage bioreactor was obtained after 60 h (33.7%). Whereas, the two-stage batch culture increased the polymer content to 50.1% after 54 h. High-cell-density (0.64 g/L) at continuous feeding rate 0.55 mL/l/h of WFO recorded the highest polymer content after...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pseudomonas fluorescens S48; Biopolymer; PHAs; Batch; Two-stage batch; High-celldensity fed batch; Bioreactor; Recovery.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200034

Elimination of coliforms and Salmonella spp. in sheep meat by gamma irradiation treatment
Provedor de dados: 58
Autores: Henriques,Luciana Salles Vasconcelos; Henry,Fábio da Costa; Barbosa,João Batista; Ladeira,Silvania Alves; Pereira,Silvia Menezes de Faria; Antonio,Isabela Maria da Silva; Teixeira,Gina Nunes; Martins,Meire Lelis Leal; Vital,Helio de Carvalho; Rodrigues,Dália dos Prazeres; Reis,Eliane Moura Falavina dos.
This study aimed at evaluating the bacteriological effects of the treatment of sheep meat contaminated with total coliforms, coliforms at 45 °C and Salmonella spp. by using irradiation at doses of 3 kGy and 5 kGy. Thirty sheep meat samples were collected from animals located in Rio de Janeiro State, Brazil, and then grouped in three lots including 10 samples: non-irradiated (control); irradiated with 3 kGy; and irradiated with 5 kGy. Exposure to gamma radiation in a 137Cs source-driven irradiating facility was perfomed at the Nuclear Defense Section of the Brazilian Army Technological Center (CTEx) in Rio de Janeiro. The samples were kept under freezing temperature (-18 °C) until the analyses, which occurred in two and four months after irradiation. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Food irradiation; Microbiology; Sheep meat quality.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400017

Zoonoses in humans from small rural properties in Jataizinho, Parana, Brazil
Provedor de dados: 58
Autores: Gonçalves,Daniela Dib; Benitez,Aline; Lopes-Mori,Fabiana Maria Ruiz; Alves,Lucimara Aparecida; Freire,Roberta Lemos; Navarro,Italmar Teodorico; Santana,Maria Aparecida Zanella; Santos,Luís Roberto Alves dos; Carreira,Teresa; Vieira,Maria Luísa; Freitas,Julio Cesar de.
The aim of this study was to conduct a serological survey for Lyme diseases, brucellosis, leptospirosis and toxoplasmosis and identify the risk variables related to these zoonoses in humans living in the rural area of Jataizinho, state of Parana, Brazil. A total of 63 rural properties were surveyed. Additionally, 207 serum samples collected from these rural area inhabitants were tested for indirect immunofluorescence (IFI) and western blots (WB) were performed to detect Borrelia burgdorferi (sensu lato); a tamponated acidified antigen test (AAT) and 2-mercaptoethanol (2-ME) were used to detect antibodies of Brucella abortus; the microscopic agglutination test (MAT) was carried out to detect antibodies anti-Leptospira spp. and IFI was used to find...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lyme disease; Leptospirosis; Brucellosis; Toxoplasmosis; Human; Antibody.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100018

Extracellular proteases of Halobacillus blutaparonensis strain M9, a new moderately halophilic bacterium
Provedor de dados: 58
Autores: Santos,Anderson F.; Valle,Roberta S.; Pacheco,Clarissa A.; Alvarez,Vanessa M.; Seldin,Lucy; Santos,André L.S.
Halophilic microorganisms are source of potential hydrolytic enzymes to be used in industrial and/or biotechnological processes. In the present study, we have investigated the ability of the moderately halophilic bacterium Halobacillus blutaparonensis (strain M9), a novel species described by our group, to release proteolytic enzymes. This bacterial strain abundantly proliferated in Luria-Bertani broth supplemented with 2.5% NaCl as well as secreted proteases to the extracellular environment. The production of proteases occurred in bacterial cells grown under different concentration of salt, ranging from 0.5% to 10% NaCl, in a similar way. The proteases secreted by H. blutaparonensis presented the following properties: (i) molecular masses ranging from 30...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Halobacillus blutaparonensis; Halophilic bacterium; Serine protease.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400039

Dermatophytosis diagnosed at the Evandro Chagas Institute, Pará, Brazil
Provedor de dados: 58
Autores: Silveira-Gomes,Fabíola; Oliveira,Elaina Ferreira de; Nepomuceno,Lívia Barreto; Pimentel,Rosiane Ferreira; Marques-da-Silva,Silvia Helena; Mesquita-da-Costa,Maurimélia.
Dermatophytosis is caused by a dermatophyte fungus that affects the stratum corneum and keratinized tissue. Dermatophyte fungus has been reported worldwide as the causative agent of dermatophytosis, but the etio-epidemiological aspects of these mycoses in the state of Pará remain unknown. The purpose of this study was to describe the etio-epidemiological profile of dermatophytosis diagnosed in patients at the Evandro Chagas Institute from May 2005 to June 2006. A total of 494 patients were admitted, and their samples were collected, submitted for direct microscopic examination using 20% KOH and cultured in Sabouraud and Mycosel medium. The identification was based in macro and microscopic characteristics. Direct examinations were positive in 13% (66/494)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dermatophytosis; Etio-epidemiology; Trichophyton; T. mentagrophytes.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200016

An oxidant and organic solvent tolerant alkaline lipase by P. aeruginosa mutant: downstream processing and biochemical characterization
Provedor de dados: 58
Autores: Bisht,Deepali; Yadav,Santosh Kumar; Darmwal,Nandan Singh.
An extracellular alkaline lipase from Pseudomonas aeruginosa mutant has been purified to homogeneity using acetone precipitation followed by anion exchange and gel filtration chromatography and resulted in 27-fold purification with 19.6% final recovery. SDS-PAGE study suggested that the purified lipase has an apparent molecular mass of 67 kDa. The optimum temperature and pH for the purified lipase were 45°C and 8.0, respectively. The enzyme showed considerable stability in pH range of 7.0-11.0 and temperature range 35-55 °C. The metal ions Ca2+, Mg2+ and Na+ tend to increase the enzyme activity, whereas, Fe2+ and Mn2+ ions resulted in discreet decrease in the activity. Divalent cations Ca+2 and Mg+2 seemed to protect the enzyme against thermal denaturation...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alkaline lipase; Detergent stability; Mutant; Organic-solvent; P-nitrophenyl palmitate Pseudomonas.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400040

In situ biosurfactant production and hydrocarbon removal by Pseudomonas putida CB-100 in bioaugmented and biostimulated oil-contaminated soil
Provedor de dados: 58
Autores: Ángeles,Martínez-Toledo; Refugio,Rodríguez-Vázquez.
In situ biosurfactant (rhamnolipid) production by Pseudomonas putida CB-100 was achieved during a bioaugmented and biostimulated treatment to remove hydrocarbons from aged contaminated soil from oil well drilling operations. Rhamnolipid production and contaminant removal were determined for several treatments of irradiated and non-irradiated soils: nutrient addition (nitrogen and phosphorus), P. putida addition, and addition of both (P. putida and nutrients). The results were compared against a control treatment that consisted of adding only sterilized water to the soils. In treatment with native microorganisms (non-irradiated soils) supplemented with P. putida, the removal of total petroleum hydrocarbons (TPH) was 40.6%, the rhamnolipid production was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioremediation; Irradiated soil; Total petroleum hydrocarbons; Rhamnolipids; P. putida.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200040

Colicin type 7 produced by majority of Shigella sonnei isolated from Thai patients with diarrhoea
Provedor de dados: 58
Autores: Kaewklom,Siriporn; Samosornsuk,Seksun; Pipatsatitpong,Duangnate; Aunpad,Ratchaneewan.
Thirty one out of 153 strains of Shigella sonnei isolated from Thai patients with diarrhoea showed antibacterial activity against S. sonnei by agar well diffusion method. All of them harbor plasmids with the genetic determination of colicin type 7 (Js) gene but without colicin E and colicin U gene. The PCR product obtained from strain 35/44 was shown to be the gene for colicin type 7 lytic protein (cja). The partially purified bacteriocin (PPB) containing colicin type 7 of strain 35/44 was prepared and used for characterization. The antibacterial activity of PPB against a total of 17 selected Gram-positive and Gram-negative bacteria was tested. It was found that PPB of strain 35/44 was active against E. coli O157, S. sonnei and S. boydii. The sensitivity...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Shigella sonnei; Colicin type 7; Diarrhoea.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300010

Screening of efficient arbuscular mycorrhizal fungi for Azadirachta indica under nursery condition: a step towards afforestation of semi-arid region of western India
Provedor de dados: 58
Autores: Banerjee,K.; Gadani,M.H.; Srivastava,K.K.; Verma,Neelam; Jasrai,Y.T.; Jain,N.K.
To optimize nursery practices for efficient plant production procedures and to keep up to the ever growing demand of seedlings, identification of the most suitable species of arbuscular mycorrhizal fungi (AMF), specific for a given tree species, is clearly a necessary task. Sixty days old seedlings of Neem (Azadirachta indica A. Juss) raised in root trainers were inoculated with six species of AMF and a mixed inoculum (consortia) and kept in green house. Performances of the treatments on this tree species were evaluated in terms of growth parameters like plant height shoot collar diameter, biomass and phosphorous uptake capabilities. Significant and varied increase in the growth parameters and phosphorous uptake was observed for most of the AMF species...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arbuscular mycorrhizal fungi; Neem; Glomus mosseae; Glomus intraradices.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200039

Relationship between Paratuberculosis and the microelements Copper, Zinc, Iron, Selenium and Molybdenum in Beef Cattle
Provedor de dados: 58
Autores: Paolicchi,F.; Perea,J.; Cseh,S.; Morsella,C.
To study the deficiency of minerals and its relationship with Paratuberculosis, blood, serum, and fecal samples were obtained from 75 adult bovines without clinical symptoms of the disease and from two bovines with clinical symptoms of the disease, from two beef herds with a previous history of Paratuberculosis in the Province of Buenos Aires, Argentina. Serum samples were processed by ELISA and feces were cultured in Herrolds medium. Copper, zinc and iron in serum were quantified by spectrophotometry and selenium was measured by the activity of glutathione peroxidase. We also determined copper, zinc, iron and molybdenum concentrations in pastures and the concentration of sulfate in water. Mycobacterium avium subsp paratuberculosis (Map) was isolated from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Paratuberculosis; Micronutrients; Selenium; Molybdenum; Copper.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100022

Influence of carvacrol and thymol on the physiological attributes, enterotoxin production and surface characteristics of Staphylococcus aureus strains isolated from foods
Provedor de dados: 58
Autores: Souza,E.L.; Oliveira,C.E.V.; Stamford,T.L.M.; Conceição,M.L.; Gomes Neto,N.J.
This study evaluated the influence of the phenolic compounds carvacrol (CAR) and thymol (THY) on some physiological characteristics and on the modulation of the secretion of some staphylococcal virulence factors, that is, coagulase and enterotoxin. This study also investigated possible mechanisms for the establishment of the anti-staphylococcal activity of these compounds. Sublethal concentrations (0.3 and 0.15 µL/mL) of CAR and THY inhibited the activity of the enzymes coagulase and lipase and led to a decrease in salt tolerance. At the tested sublethal concentrations, both CAR and THY led to a total suppression of enterotoxin production. The loss of a 260-nm-absorbing material and an efflux of potassium ions occurred immediately after the addition of CAR...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phenolic compounds; Physiological suppression; Staphylococcal enterotoxins; Virulence.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100004

Typing of Streptococcus mutans strains isolated from caries free and susceptible subjects by multilocus enzyme electrophoresis
Provedor de dados: 58
Autores: Tahmourespour,Arezoo; Nabinejad,Abdolreza; Shirian,Hannaneh; Rosa,Edvaldo Antonio Ribeiro; Tahmourespour,Sanaz.
This study was evaluated the clonal diversity of Streptococcus mutans in caries-free and caries-active subjects using MLEE. Strains from caries-free subjects were grouped in a single taxon. Unrooted dendrogram showed that different strains clustered in four different clades, also showed that more than one clonal type can be found in a same individual.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Streptococcus mutans; Multilocus enzyme electrophoresis; Caries free; Caries susceptible; Typing.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300033

Prevalence of antibodies against Toxoplasma gondii and Neospora caninum in dogs
Provedor de dados: 58
Autores: Langoni,Helio; Fornazari,Felipe; Silva,Rodrigo Costa da; Monti,Elis Talita; Villa,Fausto Baptista.
Toxoplasmosis and neosporosis are parasitic diseases of global importance. The present study had the objective to determine the influence of age, sex and breed in the prevalence of antibodies against both diseases in dogs from Brotas city, São Paulo State, Brazil. Blood samples of 342 dogs were collected, and the age, sex and breed of each animal were recorded. The serological diagnosis for toxoplasmosis and neosporosis were performed using the immunofluorescent antibody test (IFAT). The Fischer's test was used to calculate the association probability of the variables, with a = 5%. For toxoplasmosis the prevalence of antibodies was 26.9% (CI 95% 22.4-31.8%), and for neosporosis 4.97% (CI 95% 3.1-7.8%). The statistical analysis revealed a higher risk of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Toxoplasma gondii; Neospora caninum; IFAT.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400043

Comparison of methods for the detection of biofilm formation by Staphylococcus aureus isolated from bovine subclinical mastitis
Provedor de dados: 58
Autores: Melo,Poliana de Castro; Ferreira,Luciano Menezes; Nader Filho,Antônio; Zafalon,Luiz Francisco; Vicente,Hinig Isa Godoy; Souza,Viviane de.
Biofilm formation is considered to be a selective advantage for Staphylococcus aureus mastitis isolates by facilitating bacterial persistence in the udder. It requires attachment to mammary epithelium, proliferation and accumulation of cells in multilayers. The objective of this study was to determine the sensitivity and specificity of three techniques for the detection of S. aureus biofilm-positive strains. Two phenotypic tests, including growth on microtitre plates and Congo red agar, were compared with a PCR technique using 94 S. aureus strains obtained from cows with subclinical mastitis from two farms in the state of São Paulo. These strains were characterised by in vitro slime production on Congo red agar, biofilm formation on microtitre plates and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biofilms; Bovine mastitis; Phenotypic and molecular analysis; Staphylococcus aureus.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100017

Toxigenic profile and AFLP variability of Alternaria alternata and Alternaria infectoria occurring on wheat
Provedor de dados: 58
Autores: Oviedo,María Silvina; Sturm,María Elena; Reynoso,María Marta; Chulze,Sofia Noemi; Ramirez,María Laura.
The objectives of this study were to evaluate the ability to produce alternariol (AOH), alternariol monomethyl ether (AME) and tenuazonic acid (TA) by A. alternata and A. infectoria strains recovered from wheat kernels obtained from one of the main production area in Argentina; to confirm using AFLPs molecular markers the identify of the isolates up to species level, and to evaluate the intra and inter-specific genetic diversity of these two Alternaria species. Among all the Alternaria strains tested (254), 84% of them were able to produce mycotoxins. The most frequent profile of toxin production found was the co-production of AOH and AME in both species tested. TA was only produced by strains of A. alternata. Amplified fragment polymorphism (AFLPs)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alternaria alternata; Alternaria infectoria; Alternariol; Alternariol monomethyl ether; Tenuazonic acid; AFLPs; Wheat; Genetic variation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200017

Minerals consumption by Acetobacter xylinum on cultivation medium on coconut water
Provedor de dados: 58
Autores: Almeida,Denise Milleo; Prestes,Rosilene Aparecida; Fonseca,Adriel Ferreira da; Woiciechowski,Adenise L.; Wosiacki,Gilvan.
The objective of this work is to verifying the consume of the minerals K, Na, Fe, Mg, P, S-SO4-2,B,N Total Kjedahl (NTK), NO3--N, and NH4+-N in the production of bacterial cellulose by Acetobacter xylinum, according to the medium and the manner of cultivation. The fermentative process was in ripe and green coconut water. K and Na were determined by flame emission photometry, Mg and Fe by atomic absorption spectrophotometry, P by molecular absorption spectrophotometry, S-SO4-2 by barium sulphate turbidimetry, B by Azomethin-H method, NTK by Kjeldahl method, N-NO3-and N-NH4+ by vapor distillation with magnesium oxide and Devarda's alloy, respectively. In Fermentation of ripe coconut water there were higher consumption of K (69%), Fe (84,3%), P (97,4%),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Minerals; Bacterial cellulose; Acetobacter xylinum.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100030

Cancer drugs inhibit morphogenesis in the human fungal pathogen, Candida albicans
Provedor de dados: 58
Autores: Routh,Madhushree M; Chauhan,Nitin M; Karuppayil,S Mohan.
Candida infections are very common in cancer patients and it is a common practice to prescribe antifungal antibiotics along with anticancer drugs. Yeast to hyphal form switching is considered to be important in invasive candidiasis. Targeting morphogenetic switching may be useful against invasive candidiasis. In this study, we report the antimorphogenetic properties of thirty cancer drugs.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Candida albicans; Morphogenetic switching; Cancer drugs; Antifungal antibiotics.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300029

16S rRNA gene-based identification of microbiota associated with the parthenogenetic troglobiont sand fly Deanemyia maruaga (Diptera, Psychodidae) from central Amazon, Brazil
Provedor de dados: 58
Autores: Sousa,Katianne Barbosa Alves de; Silva,Túllio Romão Ribeiro da; Alencar,Ronildo Baiatone; Baton,Luke Anthony; Naveca,Felipe Gomes; Shimabukuro,Paloma Helena Fernandes.
Bacteria associated with the parthenogenetic troglobiont sand fly Deanemyia maruaga were characterized by sequencing cloned 16S rDNA PCR products. Eleven novel partial 16S rDNA sequences, with varying degrees of similarity to Actinobacteria, were identified. None of the sequences identified had homology to those known from parthenogenesis-inducing bacteria.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Actinobacteria; Bat guano; Parthenogensis; Sand flies; Troglobiont.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100047

Bioethanol production from rice straw residues
Provedor de dados: 58
Autores: Belal,Elsayed B.
A rice straw -cellulose utilizing mold was isolated from rotted rice straw residues. The efficient rice straw degrading microorganism was identified as Trichoderma reesei. The results showed that different carbon sources in liquid culture such as rice straw, carboxymethyl cellulose, filter paper, sugar cane bagasse, cotton stalk and banana stalk induced T. reesei cellulase production whereas glucose or Potato Dextrose repressed the synthesis of cellulase. T. reesei cellulase was produced by the solid state culture on rice straw medium. The optimal pH and temperature for T. reesei cellulase production were 6 and 25 ºC, respectively. Rice straw exhibited different susceptibilities towards cellulase to their conversion to reducing sugars. The present study...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cellulase; Trichoderma reesei; Rice straw residues; Enzymatic hydrolysis; Bioethanol.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100033

Diversity of the candidate phylum Poribacteria in the marine sponge Aplysina fulva
Provedor de dados: 58
Autores: Hardoim,C.C.P.; Cox,C.J.; Peixoto,R.S.; Rosado,A.S.; Costa,R.; Elsas,J.D. van.
Poribacterial clone libraries constructed for Aplysina fulva sponge specimens were analysed with respect to diversity and phylogeny. Results imply the coexistence of several, prevalently "intraspecific" poribacterial genotypes in a single sponge host, and suggest quantitative analysis as a desirable approach in studies of the diversity and distribution of poribacterial cohorts in marine sponges.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Marine sponges; Bacterial diversity; Bacterial phylogeny; 16S rRNA gene.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100048

Isolation of dermatophytes in wild felids from screening centers
Provedor de dados: 58
Autores: Albano,Ana Paula N.; Nascente,Patrícia da Silva; Leite,Alice T. Meirelles; Xavier,Melissa O.; Santin,Rosema; Mattei,Antonella Souza; Humberg,Roberta M.P.; Coimbra,Marco Antonio A.; Minello,Luiz Fernando; Meireles,Mario C.A.
The aim of this study was detect the presence of dermatophyte fungi on wild felids from screening centers. Samples were taken from 30 animals, assembled in two groups: "free-ranging" and "transitory captivity". The dermatophytes (Trichophyton genus), isolated from two felids (6.6%), both of the group "free-ranging".
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Trichophyton sp.; Dermatophytes; Wild felids.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100025

In vitro and in vivo inhibition of rabies virus replication by RNA interference
Provedor de dados: 58
Autores: Ono,Ekaterina A. Durymanova; Iamamoto,Keila; Castilho,Juliana G.; Carnieli Jr.,Pedro; Oliveira,Rafael de Novaes; Achkar,Samira M.; Carrieri,Maria L.; Kotait,Ivanete; Brandão,Paulo E.
Rabies is a zoonotic disease that affects all mammals and leads to more than 55,000 human deaths every year, caused by rabies virus (RABV) (Mononegavirales: Rhabdoviridae: Lyssavirus). Currently, human rabies treatment is based on the Milwaukee Protocol which consists on the induction of coma and massive antiviral therapy. The aim of this study was to assess the decrease in the titer of rabies virus both in vitro and in vivo using short-interfering RNAs. To this end, three siRNAs were used with antisense strands complementary to rabies virus nucleoprotein (N) mRNA. BHK-21 cells monolayers were infected with 1000 to 0.1 TCID50 of PV and after 2 hours the cells were transfected with each of tree RNAs in separate using Lipofectamine-2000. All three siRNAs...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rabies; RNA interference; SiRNAs; Antiviral; Treatment.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300034

Halotolerance, ligninase production and herbicide degradation ability of basidiomycetes strains
Provedor de dados: 58
Autores: Arakaki,R.L.; Monteiro,D.A.; Boscolo,M.; Dasilva,R.; Gomes,E.
Fungi have been recently recognized as organisms able to grow in presence of high salt concentration with halophilic and halotolerance properties and their ligninolytic enzyme complex have an unspecific action enabling their use to degradation of a number of xenobiotic compounds. In this work, both the effect of salt and polyols on growth of the basidiomycetes strains, on their ability to produce ligninolytic enzyme and diuron degradation were evaluated. Results showed that the presence of NaCl in the culture medium affected fungal specimens in different ways. Seven out of ten tested strains had growth inhibited by salt while Dacryopinax elegans SXS323, Polyporus sp MCA128 and Datronia stereoides MCA167 fungi exhibited higher biomass production in medium...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Basidiomycetes; Halotolerance; Ligninases; Diuron degradation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400026

Assessing the epidemiological data of Staphylococcus aureus food poisoning occurred in the State of Rio Grande do Sul, Southern Brazil
Provedor de dados: 58
Autores: Lima,Gustavo Costalunga; Loiko,Márcia Regina; Casarin,Letícia Sopeña; Tondo,Eduardo Cesar.
Staphylococcal food poisoning is one of the most frequent foodborne illnesses worldwide and it is caused by the ingestion of food contaminated with enterotoxins produced by some strains of Staphylococcus (S.) aureus. In the State of Rio Grande do Sul (RS), Southern Brazil, S. aureus has been identified as the second most frequent agent of foodborne illnesses in the last two decades. The aim of the present study was to assess and analyse the epidemiological data of S. aureus food poisoning occurred in the State of RS during the years of 2000 to 2002. The official records of epidemiological investigations carried out by the Sanitary Surveillance Services of the State of RS were analysed. Among foodborne outbreaks for which aetiology was determined, S. aureus...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Staphylococcus aureus; Food poisoning; RS State; Brazil.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300014

Presence of enterotoxigenic Staphylococcus aureus in artisan fruit salads in the city of San Luis, Argentina
Provedor de dados: 58
Autores: Lucero Estrada,Cecilia S.M.; Alcaráz,Lucia E.; Satorres,Sara E.; Manfredi,Eduardo; Velázquez,Lidia del C.
An increase in the consumption of fruit juices and minimally processed fruits salads has been observed in recent years all over the world. In this work, the microbiological quality of artisan fruit salads was analysed. Faecal coliforms, Salmonella spp, Shigella spp, Yersinia enterocolitica and Escherichia coli O157:H7 were not detected; nevertheless, eleven strains of Staphylococcus aureus were isolated. By multiplex PCR, all isolates showed positive results for S. aureus 16S rRNA gene and 63.6% of them were positive for sea gene. Furthermore, PCR sea positive strains were able to produce the corresponding enterotoxin. Finally, the inactivation of these strains in fruit salads by nisin, lysozyme and EDTA, was studied. EDTA produced a total S. aureus growth...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Staphylococcus aureus; Enterotoxigenic strains; Fruit salads; Antimicrobial compounds; Multiplex PCR.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400018

Comparative analysis of conventional PCR and real-time PCR to diagnose shrimp WSD
Provedor de dados: 58
Autores: Leal,C.A.G.; Carvalho-Castro,G.A.; Cottorello,A.C.; Leite,R.C.; Figueiredo,H.C.P.
The aims of this study were to standard and optimize a qPCR protocol with FAM-BHQ1 probe, and to compare its sensitivity against TaqMan qPCR and PCR methods to diagnose shrimp WSD. The FAM-BHQ1 qPCR presented higher clinical sensitivity and showed to be a robust alternative to detect WSSV in clinical samples.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Clinical samples; Sensitivity; Real-time PCR; WSSV; WSD.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300038

Influence of phenolic compounds of Kangra tea [Camellia sinensis (L) O Kuntze] on bacterial pathogens and indigenous bacterial probiotics of Western Himalayas
Provedor de dados: 58
Autores: Sourabh,Aditi; Kanwar,S.S.; Sud,R.G.; Ghabru,Arti; Sharma,O.P.
Phenolic compounds of nutraceutical importance viz., catechins (C), (-)-epicatechin (EC), (-)-epigallocatechin (EGC), (-)-epigallocatechin-3-gallate (EGCG) and (-)-epicatechin-3-gallate (ECG) were estimated in fresh green tea shoots of Camellia sinensis (L) O Kuntze cultivar. The total polyphenols and total catechins were in the range of 219.90 to 317.81 and 140.83 to 271.39 g/kg, respectively in monthly samples of tea. The values of C, EC, EGC, EGCG and ECG in tea powders as analyzed through high performance liquid chromatography (HPLC) were in the range of 1.560 to 3.661, 13.338 to 27.766, 26.515 to 39.597, 62.903 to 102.168 and 18.969 to 39.469 mg/g, respectively. Effect of tea extracts and standard flavanols against five pathogenic bacteria viz.,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Kangra tea; Western Himalayas; Probiotics; Catechins; Antibacterial activity.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300007

Kinetic characterization of glucose aerodehydrogenase from Aspergillus niger EMS-150-F after optimizing the dose of mutagen for enhanced production of enzyme
Provedor de dados: 58
Autores: Umbreen,Huma; Zia,Muhammad Anjum; Rasul,Samreen.
In the present study enhanced production of glucose aerodehydrogenase from Aspergillus niger has been achieved after optimizing the dose of chemical mutagen ethyl methane sulfonate (EMS) that has not been reported earlier. Different doses of mutagen were applied and a strain was developed basing upon the best production. The selected strain Aspergillus niger EMS-150-F was optimized for nutrient requirements in order to produce enzyme through fermentation and the results showed the best yield at 2% corn steep liquor (CSL), 36 hours fermentation time, pH 5, 30°C temperature, 0.3% KH2PO4, 0.3% urea and 0.06% CaCO3. The enzyme was then purified and resulted in 57.88 fold purification with 52.12% recovery. On kinetic characterization, the enzyme showed optimum...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glucose aerodehydogenase; Mutagenesis; Production; Purification; Thermal stability.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400012

Immunologic cross-reactivity between Muscovy duck parvovirus and goose parvovirus on the basis of epitope prediction
Provedor de dados: 58
Autores: Li,Ming; Yu,Tian-fei.
Through bioinformatic prediction, between Muscovy duck parvovirus (MDPV) and goose parvovirus (GPV), there were one epitope AA503-509 (RANEPKE) on non-structural protein and three epitopes AA426-430 (SQDLD), 540-544 (DPYRS), 685-691 (KENSKRW) on structural protein might cross-react with each other. Furthermore, the four epitops were expressed in Escherichia coli. All the four recombinant proteins could react with GPV-antisera and MDPV-antisera in Western blot.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: MDPV; GPV; Cross-reactivity; Prediction; Epitope.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200031

Detection of Staphylococcus aureus with an intermediate profile to vancomycin (VISA) isolate from Santa Maria, RS
Provedor de dados: 58
Autores: Marques,Jaciane Baggiotto; Dalmolin,Tanise Vendruscolo; Bonez,Pauline Cordenonsi; Agertt,Vanessa Albertina; Campos,Marli Matiko Anraku de; Santos,Roberto Christ Vianna.
Twenty-three isolates of Staphylococcus aureus resistant to methicillin have been analyzed, being found a clinical isolate of VISA through microdilution technique. The others techniques were unable to detect such isolates. This is the first study that shows the presence of VISA in clinical isolates in the city of Santa Maria-RS.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Staphylococcus aureus; Vancomycin; Microdilution.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100040

Extraction and in vitro antioxidant activity of exopolysaccharide by Pleurotus eryngii SI-02
Provedor de dados: 58
Autores: Sun,Xinyi; Hao,Long; Ma,Hua; Li,Tong; Zheng,Lan; Ma,Zhao; Zhai,Guoyin; Wang,Liqin; Gao,Shanglong; Liu,Xiaonan; Jia,Mengshi; Jia,Le.
The extraction parameters for Pleurotus eryngii SI-02 exopolysaccharide (EPS) produced during submerged culture were optimized using response surface methodology (RSM). The optimum conditions for EPS extraction were predicted to be, precipitation time 20.24 h, ethanol concentration 89.62% and pH 8.17, and EPS production was estimated at 7.27 g/L. The actual yield of EPS under these conditions was 7.21 g/L. The in vitro antioxidant results of the EPS showed that the inhibition effects of EPS at a dosage of 400 mg/L on hydroxyl, superoxide anion and 1,1-diphenyl-2-picrylhydrazyl (DPPH) radicals were 59.63 ± 3.72%, 38.69 ± 2.59%, and 66.36 ± 4.42%, respectively, which were 12.74 ± 1.03%, 8.01 ± 0.56%, and 12.19 ± 1.05% higher than that of butylated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pleurotus eryngii SI-02; Exopolysaccharide; Extraction; Antioxidant activity; In vitro.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400009

Optimization and characterization of alkaline protease and carboxymethyl-cellulase produced by Bacillus pumillus grown on Ficus nitida wastes
Provedor de dados: 58
Autores: Gomaa,Eman Zakaria.
The potentiality of 23 bacterial isolates to produce alkaline protease and carboxymethyl-cellulase (CMCase) on Ficus nitida wastes was investigated. Bacillus pumillus ATCC7061 was selected as the most potent bacterial strain for the production of both enzymes. It was found that the optimum production of protease and CMCase were recorded at 30 °C, 5% Ficus nitida leaves and incubation period of 72 h. The best nitrogen sources for protease and CMCase production were yeast extract and casein, respectively. Also maximum protease and CMCase production were reported at pH 9 and pH 10, respectively. The enzymes possessed a good stability over a pH range of 8-10, expressed their maximum activities at pH10 and temperature range of 30-50 °C, expressed their maximum...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alkaliphillic; Protease; Carboxymethylcellulase; Production; Characterization.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200033

Identification of Lactobacillus plantarum, Lactobacillus pentosus and Lactobacillus fermentum from honey stomach of honeybee
Provedor de dados: 58
Autores: Tajabadi,Naser; Mardan,Makhdzir; Saari,Nazamid; Mustafa,Shuhaimi; Bahreini,Rasoul; Manap,Mohd Yazid Abdul.
This study aimed to isolate and identify Lactobacillus in the honey stomach of honeybee Apis dorsata. Samples of honeybee were collected from A. dorsata colonies in different bee trees and Lactobacillus bacteria isolated from honey stomachs. Ninety two isolates were Gram-stained and tested for catalase reaction. By using bacterial universal primers, the 16S rDNA gene from DNA of bacterial colonies amplified with polymerase chain reaction (PCR). Forty-nine bacterial 16S rDNA gene were sequenced and entrusted in GenBank. Phylogenetic analysis showed they were different phylotypes of Lactobacillus. Two of them were most closely relevant to the previously described species Lactobacillus plantarum. Other two phylotypes were identified to be closely related to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Honey bee; Honey stomach; Lactobacillus; Probiotic; 16S rDNA gene sequences.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300008

Bio-preservation of ground beef meat by Enterococcus faecalis CECT7121
Provedor de dados: 58
Autores: Sparo,M.D.; Confalonieri,A.; Urbizu,L.; Ceci,M.; Sánchez Bruni,S.F.
Meat and particularly ground beef is frequently associated with Food Poisoning episodes and breeches in Food Safety. The main goal of this research was to evaluate the bactericide effect of the probiotic Enterococcus faecalis CECT7121, against different pathogens as: Escherichia coli O157:H7, Staphylococcus aureus, Clostridium perfringens and Listeria monocytogenes, inoculated in ground beef meat. Three studies were performed to evaluate the inhibition of E. faecalis CECT7121 on ground beef meat samples inoculated with pathogens: Study I: Samples (100 g meat) were inoculated with pathogens (10³ CFU/g)) and E. faecalis CECT7121 (10(4) CFU/g) simultaneously. Study II: Samples were inoculated with E. faecalis CECT7121 24 h before the pathogens. Study III: E....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bio-preservation; Probiotic; Ground beef meat; Enterococcus faecalis CECT7121.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100006

Methylobacterium-plant interaction genes regulated by plant exudate and quorum sensing molecules
Provedor de dados: 58
Autores: Dourado,Manuella Nóbrega; Bogas,Andrea Cristina; Pomini,Armando M.; Andreote,Fernando Dini; Quecine,Maria Carolina; Marsaioli,Anita J.; Araújo,Welington Luiz.
Bacteria from the genus Methylobacterium interact symbiotically (endophytically and epiphytically) with different plant species. These interactions can promote plant growth or induce systemic resistance, increasing plant fitness. The plant colonization is guided by molecular communication between bacteria-bacteria and bacteria-plants, where the bacteria recognize specific exuded compounds by other bacteria (e.g. homoserine molecules) and/or by the plant roots (e.g. flavonoids, ethanol and methanol), respectively. In this context, the aim of this study was to evaluate the effect of quorum sensing molecules (N-acyl-homoserine lactones) and plant exudates (including ethanol) in the expression of a series of bacterial genes involved in Methylobacterium-plant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Endophyte; Methylobacterium; Quantitative PCR (qPCR); Plant-bacteria Interaction; Homoserine.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400044

Endophytic fungi producing of esterases: evaluation in vitro of the enzymatic activity using pH indicator
Provedor de dados: 58
Autores: Lisboa,Helen Cristina Fávero; Biasetto,Carolina Rabal; Medeiros,João Batista de; Araújo,Ângela Regina; Silva,Dulce Helena Siqueira; Teles,Helder Lopes; Trevisan,Henrique Celso.
A sensitive and efficient colorimetric method was optimized for detection of esterase enzymes produced by endophytic fungi for development of High-Throughput Screening (HTS). The fungi were isolated and obtained previously from plant species of Cerrado and Atlantic Forest located in areas of environmental preservation in the State of Sao Paulo / Brazil, as part of the project "Chemical and biological prospecting endophytic fungi associated to plant species of Cerrado and Atlantic Forest". The compounds ethyl butyrate, ethyl acetate and methyl propionate were used as standards esters which were hydrolyzed by extracellular enzyme from endophytic fungi (EC. 3.1.1.1 -carboxylesterases) for production of carboxylic acids. Thus, the reduction of the pH increases...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Esterase; PH indicator; Enzyme activity; Endophytic fungi.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300042

Clinical and mycological analysis of dog's oral cavity
Provedor de dados: 58
Autores: Santin,Rosema; Mattei,Antonella Souza; Waller,Stefanie Bressan; Madrid,Isabel Martins; Cleff,Marlete Brum; Xavier,Melissa Orzechowski; Nobre,Márcia de Oliveira; Nascente,Patrícia da Silva; Mello,João Roberto Braga de; Meireles,Mário Carlos Araújo.
The oral microbiota of humans and animals is made up of a wide variety of yeasts and bacteria, but microbiota of dogs is not totally described. Although such identification is an important step to establish the etiopathogenesis and adequate therapy for the periodontal disease The aim of this study was to evaluate and correlate oral alterations with the presence of yeasts in oral cavity of female dogs. After clinical evaluation samples from healthy and from dogs with oral diseases were obtained from three different oral sites by swabs, curettes, millimeter periodontal probes and HA membrane tip in cellulose ester. Yeast identification was performed through macroscopic and microscopic colony features and biochemical tests. Dental calculus was the most...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oral microbiota; Yeasts; M. pachydermatis; Candida spp.; Halitosis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100020

Formation of biofilm by Listeria monocytogenes ATCC 19112 at different incubation temperatures and concentrations of sodium chloride
Provedor de dados: 58
Autores: Lee,H.Y.; Chai,L.C.; Pui,C.F.; Mustafa,S.; Cheah,Y.K.; Nishibuchi,M.; Radu,S.
Biofilm formation can lead to various consequences in the food processing line such as contamination and equipment breakdowns. Since formation of biofilm can occur in various conditions; this study was carried out using L. monocytogenes ATCC 19112 and its biofilm formation ability tested under various concentrations of sodium chloride and temperatures. Cultures of L. monocytogenes ATCC 19112 were placed in 96-well microtitre plate containing concentration of sodium chloride from 1-10% (w/v) and incubated at different temperature of 4 ºC, 30 ºC and 45 ºC for up to 60 h. Absorbance reading of crystal violet staining showed the density of biofilm formed in the 96-well microtitre plates was significantly higher when incubated in 4 ºC. The formation of biofilm...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Listeria monocytogenes; Biofilm; Sodium chloride; Temperature; Microtiter plate.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100007

Molecular approach to characterize ectomycorrhizae fungi from Mediterranean pine stands in Portugal
Provedor de dados: 58
Autores: Ragonezi,Carla; Caldeira,A. Teresa; Rosário Martins,M.; Salvador,Cátia; Santos-Silva,Celeste; Ganhão,Elsa; Klimaszewska,Krystyna; Zavattieri,Amely.
Stone pine (Pinus pinea L.), like other conifers, forms ectomycorrhizas (ECM), which have beneficial impact on plant growth in natural environments and forest ecosystems. An in vitro co-culture of stone pine microshoots with pure mycelia of isolated ECM sporocarps was used to overcome the root growth cessation not only in vitro but also to improve root development during acclimation phase. Pisolithus arhizus (Scop.) Rauschert and Lactarius deliciosus (L. ex Fr.) S.F. Gray fungi, were collected, pure cultured and used in in vitro co-culture with stone pine microshoots. Samples of P. arhizus and L. deliciosus for the in vitro co-cultures were collected from the pine stands southwest Portugal. The in situ characterization was based on their morphotypes. To...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pisolithus arhizus; Lactarius deliciosus; Pinus pinea; M13-PCR; ITS.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200047

Evaluation of the PetrifilmTM EB and TEMPO® EB systems with ISO 21528-2:2004 method for the count of Enterobacteriaceae in milk
Provedor de dados: 58
Autores: Cirolini,Andréia; Miotto,Marília; Machado,Fernanda Morgana; Silva,Helen Silvestre da; Ogliari,Paulo José; Vieira,Cleide Rosana Werneck.
The development of alternative microbiological techniques is driven by the necessity to meet the current needs to deliver rapid results in the manufacturing process of foods, but it is important that these methods be evaluated for each application. The objective of the present study was to assess the PetrifilmTM EB and the TEMPO® EB systems with ISO 21528-2:2004 for the count of Enterobacteriaceae in pasteurized and UHT milk samples. We analyzed the microflora of 141 pasteurized milk samples, 15 samples of artificially contaminated pasteurized milk and 15 samples of artificially contaminated UHT milk. Investigation of the method PetrifilmTM EB and ISO 21528:2 regression analysis showed a high correlation in the samples, r = 0.90 for the microflora of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Enterobacteriaceae; Milk; Alternative methods; ISO 21528-2:2004; Count.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300016

Fecal indicators and bacterial pathogens in bottled water from Dhaka, Bangladesh
Provedor de dados: 58
Autores: Ahmed,W.; Yusuf,R.; Hasan,I.; Ashraf,W.; Goonetilleke,A.; Toze,S.; Gardner,T.
Forty-six bottled water samples representing 16 brands from Dhaka, Bangladesh were tested for the numbers of total coliforms, fecal indicator bacteria (i.e., thermotolerant Escherichia coli and Enterococcus spp.) and potential bacterial pathogens (i.e., Aeromonas hydrophil, Pseudomonas aeruginos, Salmonella spp., and Shigella spp.). Among the 16 brands tested, 14 (86%), ten (63%) and seven (44%) were positive for total coliforms, E. coil and Enterococcus spp., respectively. Additionally, a further nine (56%), eight (50%), six (37%), and four (25%) brands were PCR positive for A. hydrophila lip, P. aeruginosa ETA, Salmonella spp. invA, and Shigella spp. ipaH genes, respectively. The numbers of bacterial pathogens in bottled water samples ranged from 28 ± 12...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bottled water; Fecal indicator bacteria; Quantitative PCR; Bacterial pathogens; Public health risk.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100013

Antibacterial activity of bacteriocin-like substance P34 on Listeria monocytogenes in chicken sausage
Provedor de dados: 58
Autores: Sant'Anna,Voltaire; Quadros,Deoni A.F.; Motta,Amanda S.; Brandelli,Adriano.
The antimicrobial activity of the bacteriocin-like substance (BLS) P34 against Listeria monocytogenes was investigated in chicken sausage. The BLS was applied to chicken sausages (256 AU g-1) previously inoculated with a suspension of 10² cfu g-1 of L. monocytogenes. BLS P34 inhibited the indicator microorganism in situ in all incubation times for up to 10 days at 5 °C. The effectiveness of BLS P34 was increased when it was added in combination with nisin. The bacteriocin was also tested in natural eatable natural bovine wrapping (salty semi-dried tripe) against the same indicator microorganism, also showing inhibitory capability in vitro. BLS P34 showed potential to control L. monocytogenes in refrigerated meat products.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacteriocin; Chilled chicken sausage; Listeria monocytogenes; Biopreservation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400019

Antimicrobial effect of para-alkoxyphenylcarbamic acid esters containing substituted N-phenylpiperazine moiety
Provedor de dados: 58
Autores: Malík,Ivan; Bukovský,Marián; Andriamainty,Fils; Gališinová,Jana.
In current research, nine basic esters of para-alkoxyphenylcarbamic acid with incorporated 4-(4fluoro-/3-trifluoromethylphenyl)piperazin-1-yl fragment, 6i-6m and 8f-8i, were screened for their in vitro antimicrobial activity against Candida albicans, Staphylococcus aureus and Escherichia coli, respectively. Taking into account the minimum inhibitory concentration assay (MIC), as the most active against given yeast was evaluated 8i (MIC = 0.20 mg/mL), the most lipophilic structure containing para-butoxy and trifluoromethyl substituents. Investigating the efficiency of the compounds bearing only a single atom of fluorine and appropriate para-alkoxy side chain against Candida albicans, the cut-off effect was observed. From evaluated homological series, the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phenylcarbamates; Substituted N-phenylpiperazines; Candida albicans.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200018

Prevalence of virulence genes in strains of Campylobacter jejuni isolated from human, bovine and broiler
Provedor de dados: 58
Autores: González-Hein,Gisela; Huaracán,Bernardo; García,Patricia; Figueroa,Guillermo.
Campylobacter jejuni isolates of different origins (bovine, broiler meat, human) were screened by polymerase chain reaction for the presence of 4 genes cdtB, cst-II, ggt, and virB11, previously linked to virulence such as adherence, invasion, colonization, molecular mimicry, and cytotoxin production. In addition, the isolates were screened for the presence of the global gene regulator csrA linked to oxidative stress responses, biofilms formation, and cell adhesion. All the C. jejuni isolates were positive for cdtB gene. The csrA gene was detected in 100% and 92% of C. jejuni isolates from human and animal origin and the virB11 gene was detected in 7.3% and 3.6% isolates from chicken and human respectively. All isolates from bovine were negative for the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Campylobacter jejuni; Virulence; Guillain Barré syndrome; Broiler; Bovine.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400028

Anti dermatophytic therapy: prospects for the discovery of new drugs from natural products
Provedor de dados: 58
Autores: Soares,Luciana Arantes; Sardi,Janaína de Cássia Orlandi; Gullo,Fernanda Patrícia; Pitangui,Nayla de Souza; Scorzoni,Liliana; Leite,Fernanda Sangalli; Giannini,Maria José Soares Mendes; Almeida,Ana Marisa Fusco.
Millions of people and animals suffer from superficial infections caused by a group of highly specialized filamentous fungi, the dermatophytes, which only infect keratinized structures. With the appearance of AIDS, the incidence of dermatophytosis has increased. Current drug therapy used for these infections is often toxic, long-term, and expensive and has limited effectiveness; therefore, the discovery of new anti dermatophytic compounds is a necessity. Natural products have been the most productive source for new drug development. This paper provides a brief review of the current literature regarding the presence of dermatophytes in immunocompromised patients, drug resistance to conventional treatments and new anti dermatophytic treatments.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dermatophytes; Filamentous fungi; Natural products; Synthetic product.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400003

Histopathology of cotton bollworm midgut infected with Helicoverpa armigera cytoplasmic polyhedrosis virus
Provedor de dados: 58
Autores: Marzban,Rasoul; He,Qian; Zhang,Qingwen; Liu,Xiao Xia.
This research was carried out to examine cytopathological effects of Helicoverpa armigera Cytoplasmic polyhedrosis virus (HaCPV) on infected midgut cotton bollworm (Helicoverpa armigera) using transmission and scanning electron microscope. The symptoms on infected host larvae of the host, compared with healthy ones, were getting swollen with milky-white and fragile Histopathological examinations showed infection with HaCPV small polyhedral inclusion bodies (PIB) after 1 or 2 days which were observed in columnar cells of midgut. Virions were partially or completely occupied in a polyhedral matrix to form polyhedral inclusion bodies (PIB) at periphery of virogenic stroma. PIBs were measured 0.5 to 3.5 mm and virions about 46 nm in diameter. Microvilli of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cytoplasmic polyhedrosis virus; Helicoverpa armigera; Histopathology; HaCPV.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400029

Molecular basis of high-level ciprofloxacin resistance in Neisseria gonorrhoeae strains from Shandong Province, China
Provedor de dados: 58
Autores: Zhao,L.H.; Zhao,S.P.
In the study, the ciprofloxacin resistance rate was 100%. High-level ciprofloxacin resistance rate was 63.55%. Sixteen different mutation patterns involved in the formation of ciprofloxacin resistance were identified. The most prevalent were patterns P7 (25.2%), P8 (15.0%), P9 (11.2%), P1 (10.3%), and P5 (10.3%). All of the 107 NG isolates analyzed for mutations in the study have demonstrated a change of Ser-91 → Phe in the gyrA gene, and all except one have demonstrated a change in position 95 of the amino acid sequence. All of the 68 high-level QRNG isolates had double mutations in gyrA gene combined with a single or two mutations in parC gene. It is most important that a new mutation site of Ile-97 → Met in gyrA and a new mutation of Leu-106 → Ile in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Neisseria gonorrhoeae; Ciprofloxacin resistance; High-level; Molecular analysis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100039

Transcriptional profiling of genes involved in n-hexadecane compounds assimilation in the hydrocarbon degrading Dietzia cinnamea P4 strain
Provedor de dados: 58
Autores: Procópio,Luciano; Silva,Michele de Cassia Pereira e; Elsas,Jan Dirk van; Seldin,Lucy.
The petroleum-derived degrading Dietzia cinnamea strain P4 recently had its genome sequenced and annotated. This allowed employing the data on genes that are involved in the degradation of n-alkanes. To examine the physiological behavior of strain P4 in the presence of n-alkanes, the strain was grown under varying conditions of pH and temperature. D. cinnamea P4 was able to grow at pH 7.0-9.0 and at temperatures ranging from 35 ºC to 45 ºC. Experiments of gene expression by real-time quantitative RT-PCR throughout the complete growth cycle clearly indicated the induction of the regulatory gene alkU (TetR family) during early growth. During the logarithmic phase, a large increase in transcriptional levels of a lipid transporter gene was noted. Also, the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dietzia cinnamea; N-hexadecane assimilation; Alk genes; Rubredoxin-alkane monooxygenase; Real-time quantitative RT-PCR.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200044

Effect of sub-minimum inhibitory concentrations of ciprofloxacin, amikacin and colistin on biofilm formation and virulence factors of Escherichia coli planktonic and biofilm forms isolated from human urine
Provedor de dados: 58
Autores: Wojnicz,Dorota; Tichaczek-Goska,Dorota.
The aim of this study was to determine the effect of subinhibitory concentrations (sub-MICs) of ciprofloxacin, amikacin and colistin on biofilm formation, motility, curli fimbriae formation by planktonic and biofilm cells of E. coli strains isolated from the urine of patients with various urinary system infections. Quantification of biofilm formation was carried out using a microtiter plate assay and a spectrophotometric method. Bacterial enumeration was used to assess the viability of bacteria in the biofilm. Curli expression was determined by using YESCA agar supplemented with congo red. Using motility agar the ability to move was examined. All the antibiotics used at sub-MICs reduced biofilm formation in vitro, decreased the survival of bacteria, but...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biofilm; Sub-MIC; Ciprofloxacin; Amikacin; Colistin.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100037

Mucorales from the semiarid of Pernambuco, Brazil
Provedor de dados: 58
Autores: Santiago,André Luiz Cabral Monteiro de Azevedo; Santos,Paulo Jorge Parreira dos; Maia,Leonor Costa.
Nineteen taxa of Mucorales, belonging to Absidi, Apophysomyces, Cunninghamella, Fennellomyces, Lichtheimi, Mucor, Mycotypha, Rhizopus and Syncephalastrum were isolated from 36 composite soil samples in three semiarid areas in the State of Pernambuco (Triunfo, Cabrobó and Belém de São Francisco), Northeast Brazil, which are characterized by Caatinga vegetation. Triunfo is preserved, whereas Cabroró and Belém de São Francisco are experiencing low and severe desertification processes, respectively. Mucorales were isolated in Petri dishes in triplicate from 5 mg samples of soil placed on the surface of wheat germ agar plus chloramphenicol and Cercobin [Dimethyl 4,49-(103 phenylene) bis (3-thioallophanate)] medium. The plates were left on a bench at room...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodiversity; Caatinga; Mucoromycotina; Soil degradation; Taxonomy.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100044

Brazilian propolis protects Saccharomyces cerevisiae cells against oxidative stress
Provedor de dados: 58
Autores: Sá,Rafael A. de; Castro,Frederico A.V. de; Eleutherio,Elis C.A.; Souza,Raquel M. de; Silva,Joaquim F.M. da; Pereira,Marcos D.
Propolis is a natural product widely used for humans. Due to its complex composition, a number of applications (antimicrobial, antiinflammatory, anesthetic, cytostatic and antioxidant) have been attributed to this substance. Using Saccharomyces cerevisiae as a eukaryotic model we investigated the mechanisms underlying the antioxidant effect of propolis from Guarapari against oxidative stress. Submitting a wild type (BY4741) and antioxidant deficient strains (ctt1∆, sod1∆, gsh1∆, gtt1∆ and gtt2∆) either to 15 mM menadione or to 2 mM hydrogen peroxide during 60 min, we observed that all strains, except the mutant sod1∆, acquired tolerance when previously treated with 25 µg/mL of alcoholic propolis extract. Such a treatment reduced the levels of ROS...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Propolis; Antioxidant; Oxidative stress; Saccharomyces cerevisiae.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300051

Antibacterial efficacy of Nisin, Pediocin 34 and Enterocin FH99 against Listeria monocytogenes and cross resistance of its bacteriocin resistant variants to common food preservatives
Provedor de dados: 58
Autores: Kaur,G.; Singh,T.P.; Malik,R.K.
Antilisterial efficiency of three bacteriocins, viz, Nisin, Pediocin 34 and Enterocin FH99 was tested individually and in combination against Listeria mononcytogenes ATCC 53135. A greater antibacterial effect was observed when the bacteriocins were combined in pairs, indicating that the use of more than one LAB bacteriocin in combination have a higher antibacterial action than when used individually. Variants of Listeria monocytogenes ATCC 53135 resistant to Nisin, Pediocin 34 and Enterocin FH99 were developed. Bacteriocin cross-resistance of wild type and their corresponding resistant variants were assessed and results showed that resistance to a bacteriocin may extend to other bacteriocins within the same class. Resistance to Pediocin 34 conferred cross...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Listeria monocytogenes; Nisin; Pedioin 34; Enterocin FH99; Cross resistance.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100009

Hospital-associated methicillin-resistant Staphylococcus aureus carrying the PVL gene outbreak in a Public Hospital in Rio de Janeiro, Brazil
Provedor de dados: 58
Autores: Brust,Társis; Costa,Thaina Miranda da; Amorim,José Carlos; Asensi,Marise Dutra; Fernandes,Octavio; Aguiar-Alves,Fábio.
Hospital associated methicillin-resist Staphylococcus aureus has long been associated to outbreaks in the hospital environment. In this work, we investigated an outbreak of Hospital associated methicillin-resist Staphylococcus aureus carrying the Panton-Valentine leukocidin gene, which occurred in a large community hospital in Rio de Janeiro, Brazil.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Methicillin-resistant Staphylococcus aureus; Nasal colonization; Genotypes; PVL.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300031

Biotechnology of polyketides: new breath of life for the novel antibiotic genetic pathways discovery through metagenomics
Provedor de dados: 58
Autores: Gomes,Elisângela Soares; Schuch,Viviane; Lemos,Eliana Gertrudes de Macedo.
The discovery of secondary metabolites produced by microorganisms (e.g., penicillin in 1928) and the beginning of their industrial application (1940) opened new doors to what has been the main medication source for the treatment of infectious diseases and tumors. In fact, approximately 80 years after the discovery of the first antibiotic compound, and despite all of the warnings about the failure of the "goose that laid the golden egg," the potential of this wealth is still inexorable: simply adjust the focus from "micro" to "nano", that means changing the look from microorganisms to nanograms of DNA. Then, the search for new drugs, driven by genetic engineering combined with metagenomic strategies, shows us a way to bypass the barriers imposed by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Environmental samples; Pharmacology; PKSs; New drugs.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400002

Use of Plackett-Burman design for rapid screening of nitrogen and carbon sources for the production of lipase in solid state fermentation by Yarrowia lipolytica from mustard oil cake (Brassica napus)
Provedor de dados: 58
Autores: Imandi,Sarat Babu; Karanam,Sita Kumari; Garapati,Hanumantha Rao.
Mustard oil cake (Brassica napus), the residue obtained after extraction of mustard oil from mustard oil seeds, was investigated for the production of lipase under solid state fermentation (SSF) using the marine yeast Yarrowia lipolytica NCIM 3589. Process parameters such as incubation time, biomass concentration, initial moisture content, carbon source concentration and nitrogen source concentration of the medium were optimized. Screening of ten nitrogen and five carbon sources has been accomplished with the help of Plackett-Burman design. The highest lipase activity of 57.89 units per gram of dry fermented substrate (U/gds) was observed with the substrate of mustard oil cake in four days of fermentation.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lipase; Mustard oil cake; Plackett-Burman design; Yarrowia lipolytica.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300041

Recombinants proteins for industrial uses: utilization of Pichia pastoris expression system
Provedor de dados: 58
Autores: Rabert,Claudia; Weinacker,Daniel; Pessoa Jr,Adalberto; Farías,Jorge G.
The innovation in industrial process with impact in the efficient production is the major challenge for actual industry. A high numerous of enzymes are utilized in at different level of process; the search for new alternatives with better characteristic has become a field of study of great interest, the recombinant protein achievement in a different host system is an alternative widely assessed for production of this. The microorganism Pichia pastoris has been used like a successful expression system in diverse areas, improved the yield and extraction-recovery of the product expressed. The reported of diverse authors in the production of enzymes with different application in industry is varied, in this review the different industry areas and the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Recombinant protein; Protein production; Yeast; Industrial applications.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200002

Pasteurella multocida bacterial meningitis caused by contact with pigs
Provedor de dados: 58
Autores: López,C.; Sanchez-Rubio,P.; Betrán,A.; Terré,R.
Pasteurella multocida belongs to the normal flora of the respiratory and digestive tract of many animals. Animal exposure is a considerable risk factor for Pasteurella infection. P. multocida is the most common cause of local infection after an animal bite but is an unusual cause of meningitis. We present a case of bacterial meningitis by P. multocida in a 37-year-old man who worked in a pig farm and was bitten by a pig. The patient had a defect located in the lamina cribosa and this lesion could be the gateway of the infection, although in this case the infection could also be acquired through the pig bite. The bacteria was identified as P. multocida with the biochemical test API 20E (bioMérieux). In agreement with findings in the literature, the strain...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Pasteurella multocida; Bacterial meningitis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200021

Effectiveness of halo-tolerant, auxin producing Pseudomonas and Rhizobium strains to improve osmotic stress tolerance in mung bean (Vigna radiata L.)
Provedor de dados: 58
Autores: Ahmad,Maqshoof; Zahir,Zahir A.; Nazli,Farheen; Akram,Fareeha; Arshad,Muhammad; Khalid,Muhammad.
Halo-tolerant, auxin producing bacteria could be used to induce salt tolerance in plants. A number of Rhizobium and auxin producing rhizobacterial strains were assessed for their ability to tolerate salt stress by conducting osmoadaptation assay. The selected strains were further screened for their ability to induce osmotic stress tolerance in mung bean seedlings under salt-stressed axenic conditions in growth pouch/jar trials. Three most effective strains of Rhizobium and Pseudomonas containing ACC-deaminase were evaluated in combination, for their ability to induce osmotic stress tolerance in mung bean at original, 4, and 6 dS m-1 under axenic conditions. Results showed that sole inoculation of Rhizobium and Pseudomonas strains improved the total dry...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: ACC-deaminase; Pseudomonas; Rhizobium; Osmotic stress; Salt tolerance index.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400045

Use of P450 cytochrome inhibitors in studies of enokipodin biosynthesis
Provedor de dados: 58
Autores: Ishikawa,Noemia Kazue; Tahara,Satoshi; Namatame,Tomohiro; Farooq,Afgan; Fukushi,Yukiharu.
Enokipodins A, B, C, and D are antimicrobial sesquiterpenes isolated from the mycelial culture medium of Flammulina velutipes, an edible mushroom. The presence of a quaternary carbon stereocenter on the cyclopentane ring makes enokipodins A-D attractive synthetic targets. In this study, nine different cytochrome P450 inhibitors were used to trap the biosynthetic intermediates of highly oxygenated cuparene-type sesquiterpenes of F. velutipes. Of these, 1-aminobenzotriazole produced three less-highly oxygenated biosynthetic intermediates of enokipodins A-D; these were identified as (S)-(-)-cuparene-1,4-quinone and epimers at C-3 of 6-hydroxy-6-methyl-3-(1,2,2-trimethylcyclopentyl)-2-cyclohexen-1-one. One of the epimers was found to be a new compound.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antimicrobial compound cuparene-1; 4-quinone edible mushroom enokitake Flammulina velutipes.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400037

Solving ethanol production problems with genetically modified yeast strains
Provedor de dados: 58
Autores: Abreu-Cavalheiro,A.; Monteiro,G.
The current world demand for bioethanol is increasing as a consequence of low fossil fuel availability and a growing number of ethanol/gasoline flex-fuel cars. In addition, countries in several parts of the world have agreed to reduce carbon dioxide emissions, and the use of ethanol as a fuel (which produces fewer pollutants than petroleum products) has been considered to be a good alternative to petroleum products. The ethanol that is produced in Brazil from the first-generation process is optimized and can be accomplished at low cost. However, because of the large volume of ethanol that is produced and traded each year, any small improvement in the process could represent a savings of billions dollars. Several Brazilian research programs are investing in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brazilian ethanol production; Yeast improvement; Resistance to stress.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300001

Inhibitory activity of Syzygium aromaticum and Cymbopogon citratus (DC.) Stapf. essential oils against Listeria monocytogenes inoculated in bovine ground meat
Provedor de dados: 58
Autores: Oliveira,Thales Leandro Coutinho de; Cardoso,Maria das Graças; Soares,Rodrigo de Araújo; Ramos,Eduardo Mendes; Piccoli,Roberta Hilsdorf; Tebaldi,Victor Maximiliano Reis.
This research evaluated the antimicrobial effect of the clove (Syzygium aromaticum) and lemongrass (Cymbopogon citratus (DC.) Stapf.) essential oils (EOs) against Listeria monocytogenes ATCC 19117 growth added to bovine ground meat stored under refrigeration (5 ± 2 °C) for three days. The EOs, extracted by hydrodistillation and analyzed by gas chromatography-mass spectrometry (GC-MS), were tested in vitro using an agar well diffusion methodology for determination of Minimum Inhibitory Concentration (MIC). The MIC concentrations for both essential oils on culture tested of L. monocytogenes were 1.56%. The EOs concentrations applied in contaminated ground beef were 1.56, 3.125 and 6.25% (w/v) based on MIC levels and possible activity reductions by food...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Clove; Lemongrass; Food safety; Listeria monocytogenes; Sensorial.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200003

Integron mediated multidrug resistance in extended spectrum beta-lactamase producing clinical isolates of Klebsiella pneumoniae
Provedor de dados: 58
Autores: Mobarak-Qamsari,Maryam; Ashayeri-Panah,Mitra; Eftekhar,Freshteh; Feizabadi,Mohammad Mehdi.
The present study describes integron mediated multiple antibiotic resistance in extended-spectrum β-lactamase producing clinical isolates of Klebsiella pneumoniae. One hundred and four clinical isolates of K. pneumoniae from two Iranian hospitals were screened for extended-spectrum β-lactamase production and susceptibility of the extended-spectrum β-lactamase producing isolates was determined to 17 antibiotics by disc diffusion. Presence of integron classes 1, 2 and 3 was detected by PCR and integrase specific primers. Isolates harboring class 1 integron were then screened for variable regions using PCR. Fifty isolates (48%) produced extended-spectrum β-lactamases among which, 22 (44%) harbored class 1, 3 (6%) carried class 2 and none contained class 3...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Klebsiella pneumoniae; Extended-spectrum β-lactamase; Multiple antibiotic resistance; Integron.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300028

Identification of pathogens and virulence profile of Rhodococcus equi and Escherichia coli strains obtained from sand of parks
Provedor de dados: 58
Autores: Fernandes,M.C.; Takai,S.; Leite,D.S.; Pinto,J.P.A.N.; Brandão,P.E.; Santarém,V.A.; Listoni,F.J.P.; Silva,A.V. Da; Ribeiro,M.G.
The identification of pathogens of viral (Rotavirus, Coronavirus), parasitic (Toxocara spp.) and bacterial (Escherichia coli, Salmonella spp., Rhodococcus equi) origin shed in feces, and the virulence profile of R. equi and E. coli isolates were investigated in 200 samples of sand obtained from 40 parks, located in central region of state of Sao Paulo, Brazil, using different diagnostic methods. From 200 samples analyzed, 23 (11.5%) strains of R. equi were isolated. None of the R. equi isolates showed a virulent (vapA gene) or intermediately virulent (vapB gene) profiles. Sixty-three (31.5%) strains of E. coli were identified. The following genes encoding virulence factors were identified in E. coli: eae, bfp, saa, iucD, papGI, sfa and hly. Phylogenetic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Enteric pathogens; Virulence; Sand; Feces; Parks; E. coli; R. equi.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200025

Detection of human adenovirus, rotavirus and enterovirus in water samples collected on dairy farms from Tenente Portela, Northwest of Rio Grande do Sul, Brazil
Provedor de dados: 58
Autores: Spilki,Fernando Rosado; Luz,Roger Bordin da; Fabres,Rafael Bandeira; Soliman,Mayra Cristina; Kluge,Mariana; Fleck,Juliane Deise; Rodrigues,Manoela Tressoldi; Comerlato,Juliana; Cenci,Alexander; Cerva,Cristine; Dasso,Maurício Gautério; Roehe,Paulo Michel.
Viral gastroenteritis and other waterborne diseases are a major concern for health in Brazil. A number of studies were conducted about the presence of viruses on water samples from Brazilian areas. However, the knowledge about the occurrence of viral contamination of drinking water sources in rural settings of the country is insufficient. On the present work, 15 samples from 5 dairy farms located at the municipality of Tenente Portela were collected and analysed for the presence of human adenoviruses (HAdV), as well as human enteroviruses (EV) and rotaviruses (RV). HAdV was present on 66.66% of the water samples, and have been found in all samples from artesian wells and springs, which are used as sources of drinking water for the individuals inhabiting...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Human adenovirus; Water quality; Dairy farms.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300046

Microbial spoilage of portuguese chouriço along shelf life period
Provedor de dados: 58
Autores: Matos,Teresa de Jesus da Silva; Bruno-Soares,Arminda; Azevedo,António Amaral.
Microbial flora of portuguese chouriço (Alentejano (A) and Ribatejano (R)) with abnormal sensorial characteristics along shelf life was studied. Mesophilic anaerobic bacteria, enterococci, mesophilic sporeformers, coliforms, coagulase-positive staphylococci, sulphite reducing clostridia, Clostridium perfringens, moulds and yeasts were the most representative in both types of chouriço.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Spoilage microbial flora; Abnormal sensorial characteristics; Portuguese chouriço; Returned product.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100014

Enterotoxigenicity of Staphylococcus aureus isolated from traditional and commercial dairy products marketed in Iran
Provedor de dados: 58
Autores: Rahimi,Ebrahim.
This study was conducted to determine the prevalence rate, enterotoxigenecity, and antimicrobial resistance of S. aureus isolated from dairy products in Iran. From September 2010 to July 2011, a total of 347 samples from various dairy products, traditional and commercial, were collected from randomly selected retail stores. Overall, 20 samples (5.8%) were found to be contaminated with S. aureus. The highest prevalence of S. aureus was found in traditional cheese (11.1%), followed by traditional ice-cream (5.9%), cream (5.6%), and butter (5.3%). The ability to synthesize classical staphylococcal enterotoxins (SEA-E) was determined in 7 of 20 (35%) isolates by using ELISA. SE type C was the most common enterotoxin found in the isolated S. aureus (42.9%),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antimicrobial resistance; Dairy products; SE genes; Staphylococcal enterotoxins; Staphylococcus aureus.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200008

Comparative analysis of agr groups and virulence genes among subclinical and clinical mastitis Staphylococcus aureus isolates from sheep flocks of the Northeast of Brazil
Provedor de dados: 58
Autores: Almeida,Lara M. de; Almeida,Mayra Zilta P.R.B. de; Mendonça,Carla L. de; Mamizuka,Elsa M.
Staphylococcus aureus is one of the most frequent mastitis causative agents in small ruminants. The expression of most virulence genes of S. aureus is controlled by an accessory gene regulator (agr)locus. This study aimed to ascertain the prevalence of the different agr groups and to evaluate the occurrence of encoding genes for cytotoxin, adhesins and toxins with superantigen activity in S. aureus isolates from milk of ewes with clinical and subclinical mastitis in sheep flocks raised for meat production The agr groups I and II were identified in both cases of clinical and subclinical mastitis. Neither the arg groups III and IV nor negative agr were found. The presence of cflA gene was identified in 100% of the isolates. The frequency of hla and lukE-D...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Staphylococcus aureus; Agr groups; Virulence genes; Mastitis; Sheep flock.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200026

The prevalence of swine enteropathogens in Brazilian grower and finish herds
Provedor de dados: 58
Autores: Viott,A.M.; Lage,A.P.; Cruz Junior,E.C.C.; Guedes,R.M.C.
Diarrhoea among growing and finishing pigs is an important problem in many herds. The prevalence of L. intracellularis, B. pilosicoli, B. hyodysenteriae, Salmonella spp., enterotoxigenic E. coli, Trichuris suis and the occurrence of mixed infection were investigated. Fecal samples for forty-six herds with diarrhea or a history of diarrhea were randomly collected in Minas Gerais state, Brazil. The enteric pathogens were detected by culture (E. coli and Salmonella sp.), PCR (L. intracellularis and Brachyspira spp.) and eggs counts (T. suis). The overall herd prevalence of L. intracellularis, Salmonella enterica serotype Typhimurium and enterotoxigenic E. coli were 19.56%, 6.52%, 10.86% respectively. Mixed infection was diagnosed in 30.43% of herds, and L....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Swine; Enteropathogens; Grower finish herds; Prevalence; Brazil.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100021

Extended-spectrum β-lactamase-producing enterobacteriaceae in community-acquired urinary tract infections in São Luís, Brazil
Provedor de dados: 58
Autores: Abreu,Afonso Gomes; Marques,Sirlei Garcia; Monteiro-Neto,Valério; Gonçalves,Azizedite Guedes.
The number of ESBL-producing Enterobacteriaceae in community-acquired urinary tract infections worldwide is probably underestimated because of the technical difficulties encountered with their detection. In this study, out of 5,672 urine samples analyzed, 916 were positive for uropathogens, 472 of them being enterobacteria of which 7.6% produced β-lactamases. Analysis of the isolated from 36 patients showed a high level of antibiotic resistance, with 52.7% and 80.5% of isolates expressing blaTEM and blaCTX-M, respectively.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Enterobacteriaceae; Antimicrobial resistance; ESBL; Community-acquired infections.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200020

Alternative sanitization methods for minimally processed lettuce in comparison to sodium hypochlorite
Provedor de dados: 58
Autores: Bachelli,Mara Lígia Biazotto; Amaral,Rívia Darla Álvares; Benedetti,Benedito Carlos.
Lettuce is a leafy vegetable widely used in industry for minimally processed products, in which the step of sanitization is the crucial moment for ensuring a safe food for consumption. Chlorinated compounds, mainly sodium hypochlorite, are the most used in Brazil, but the formation of trihalomethanes from this sanitizer is a drawback. Then, the search for alternative methods to sodium hypochlorite has been emerging as a matter of great interest. The suitability of chlorine dioxide (60 mg L-1/10 min), peracetic acid (100 mg L-1/15 min) and ozonated water (1.2 mg L-1 /1 min) as alternative sanitizers to sodium hypochlorite (150 mg L-1 free chlorine/15 min) were evaluated. Minimally processed lettuce washed with tap water for 1 min was used as a control....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Food safety; Chlorine dioxide; Peracetic acid; Ozone; Minimal processing.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300002

A Multiplex real-time PCR for detection of Mycoplasma gallisepticum and Mycoplasma synoviae in clinical samples from Brazilian commercial poultry flocks
Provedor de dados: 58
Autores: Fraga,Aline Padilha; Vargas,Tatiana de; Ikuta,Nilo; Fonseca,André Salvador Kazantzi; Celmer,Álvaro José; Marques,Edmundo Kanan; Lunge,Vagner Ricardo.
Mycoplasma gallisepticum (MS) and Mycoplasma synoviae (MS) are important avian pathogens and cause economic losses to the poultry industry. Molecular biology techniques are currently used for a rapid detection of these pathogens and the adoption of control measures of the diseases. The aim of this study was to develop and validate a technique for simultaneous detection of MG and MS by multiplex real time polymerase chain reaction (PCR). The complete assay (Multiplex MGMS) was designed with primers and probes specific for each pathogen and developed to be carried out in a single tube reaction. Vaccines, MG and MS isolates and DNA from other Mycoplasma species were used for the development and validation of the method. Further, 78 pooled clinical samples...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Real-time PCR; Mycoplasma gallisepticum; Mycoplasma synoviae.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200028

Secretion of laccase and manganese peroxidase by Pleurotus strains cultivate in solid-state using Pinus spp. sawdust
Provedor de dados: 58
Autores: Camassola,Marli; Rosa,Letícia O. da; Calloni,Raquel; Gaio,Tamara A.; Dillon,Aldo J.P.
Pleurotus species secrete phenol oxidase enzymes: laccase (Lcc) and manganese peroxidase (MnP). New genotypes of these species show potential to be used in processes aiming at the degradation of phenolic compounds, polycyclic aromatic hydrocarbons and dyes. Hence, a screening of some strains of Pleurotus towards Lcc and MnP production was performed in this work. Ten strains were grown through solid-state fermentation on a medium based on Pinus spp. sawdust, wheat bran and calcium carbonate. High Lcc and MnP activities were found with these strains. Highest Lcc activity, 741 ± 245 U gdm-1 of solid state-cultivation medium, was detected on strain IB11 after 32 days, while the highest MnP activity occurred with strains IB05, IB09, and IB11 (5,333 ± 357; 4,701...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pleurotus; Laccase; Manganese peroxidase; Mushroom production; Biotechnological applications.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100031

The sensitivity of bacterial foodborne pathogens to Croton blanchetianus Baill essential oil
Provedor de dados: 58
Autores: Melo,Geiseanny Fernandes do Amarante; Costa,Ana Caroliny Vieira da; Garino Junior,Felício; Medeiros,Rosália Severo; Madruga,Marta Suely; Queiroga Neto,Vicente.
The aim of this study was to assess the activity of essential oil extracted from the leaves of C. blanchetianus Baill, popularly known as "marmeleiro", in inhibiting the growth and survival of pathogenic microorganisms in food by determining their survival in vitro and by observing the behaviour of Listeria monocytogenes inoculated into a food model (meat cubes) that was stored at refrigeration temperature (7 ± 1 ºC) for 4 days. The results indicated a bactericidal effect against Aeromonas hydrophila and Listeria monocytogenes and bacteriostatic action against Salmonella Enteritidis. A bacteriostatic effect on meat contaminated with L. monocytogenes was found for all concentrations of essential oils tested. These results showed that essential oil from the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Essential oil; Croton blanchetianus Baill; Antimicrobial activity; Foodborne microorganisms.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400023

Clavulanic acid production by the MMS 150 mutant obtained from wild type Streptomyces clavuligerus ATCC 27064
Provedor de dados: 58
Autores: Vasconcelos,Eliton da Silva; Lima,Vanderlei Aparecido de; Goto,Leandro Seiji; Cruz-Hernández,Isara Lourdes; Hokka,Carlos Osamu.
Clavulanic acid (CA) is a powerful inhibitor of the beta-lactamases, enzymes produced by bacteria resistants to penicillin and cefalosporin. This molecule is produced industrially by strains of Streptomyces clavuligerus in complex media which carbon and nitrogen resources are supplied by inexpensive compounds still providing high productivity. The genetic production improvement using physical and chemical mutagenic agents is an important strategy in programs of industrial production development of bioactive metabolites. However, parental strains are susceptible to loss of their original productivity due genetic instability phenomenona. In this work, some S. clavuligerus mutant strains obtained by treatment with UV light and with MMS are compared with the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Clavulanic acid; Streptomyces clavuligerus; Mutation; Lipase.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400005

Enzyme-linked imunoassays for the detection of Listeria sp. and Salmonella sp. in sausage: a comparison with conventional methods
Provedor de dados: 58
Autores: Benetti,T.M.; Monteiro,C.L.B.; Beux,M.R.; Abrahão,W.M.
This study was carried out comparing the conventional methods (ISO 11290-1 and BAM method, 2008) and system mini-Vidas® (Biomerieux), for detection of Listeria sp. and Salmonella sp. in cooled sausage. The immunoenzymatic method has shown to be effective for the detection of target pathogens, it has presented itself as an excellent screening method.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cooled sausage; Salmonella sp.; Listeria sp.; System mini-Vidas®.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300019

Yeasts and hygienic-sanitary microbial indicators in water buffalo mozzarella produced and commercialized in Minas Gerais, Brazil
Provedor de dados: 58
Autores: Facchin,Susanne; Barbosa,Anne C.; Carmo,Luiz S.; Silva,Maria Crisolita C.; Oliveira,Afonso L.; Morais,Paula B.; Rosa,Carlos A.
The aim of this work was to study the yeast populations and the main hygienic-sanitary microbial indicators in water buffalo mozzarella produced and commercialized in Minas Gerais, Brazil. Forty-two water buffalo mozzarella samples were purchased from retail outlets in Belo Horizonte. In addition, five samples of consecutive starter cultures, curd before acidification, acidified curd and mozzarella were collected at an industry in the city of Oliveira. Only three of the five water samples analyzed were suitable for consumption according to Brazilian sanitary standards. Four milk samples were highly contaminated with fecal coliforms, and did not meet the minimal hygienic-sanitary standards according to Brazilian regulations. Only one sample of buffalo...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Water buffalo mozzarella; Yeast diversity; Opportunistic yeast; Hygienic-sanitary microbial indicators.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300006

Prebiotic inulin: Useful dietary adjuncts to manipulate the livestock gut microflora
Provedor de dados: 58
Autores: Samanta,A.K.; Jayapal,Natasha; Senani,S.; Kolte,A.P.; Sridhar,Manpal.
In recent years, there has been a growing appreciation on the relevance of gastrointestinal microflora in both ruminants and non-ruminants owing to revelation of their role in several physiological functions including digestion, nutrient utilization, pathogen exclusion, gastrointestinal development, immunity system, gut gene expression and quality of animal products. The ban imposed on the use of antibiotics and hormones in feed has compelled animal researchers in finding an alternative which could overcome the issues of conventional feed additives. Though the concept of prebiotic was evolved keeping in mind the gastrointestinal flora of human beings, presently animal researchers are exploring the efficiency of prebiotic (inulin) for modulating the gut...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Prebiotic; Inulin; Mechanism of action; Livestock.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100001

Use of the VITEK 2 system to identify and test the antifungal susceptibility of clinically relevant yeast species
Provedor de dados: 58
Autores: Melhem,MSC; Bertoletti,A; Lucca,HRL; Silva,RBO; Meneghin,FA; Szeszs,MW.
Eleven quality control isolates (Candida albicans ATCC 64548, C. tropicalis ATCC 200956, C. glabrata ATCC 90030, C. lusitaniae ATCC 200951, C. parapsilosis ATCC 22019, C. krusei ATCC 6258, C. dubliniensis ATCC 6330, Saccharomyces cerevisiae ATCC 9763, Cryptococcus neoformans ATCC 90012, C. gattii FIOCRUZ-CPF 60, and Trichosporon mucoides ATCC 204094) and 32 bloodstream isolates, including C. albicans, C. tropicalis, C. parapsilosis, C. glabrata, C. krusei, C. guilliermondii, C. pelliculosa (Pichia anomala), C. haemulonii, C. lusitaniae, and C. kefyr were identified at the species level by the VITEK 2 system. A set of clinical isolates (32 total) were used as challenge strains to evaluate the ability of the VITEK 2 system to determine the antifungal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antifungal agents; Candida; Susceptibility testing methods; MIC; CLSI; EUCAST.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400033

Expression of enterovirus 71 capsid protein VP1 in Escherichia coli and its clinical application
Provedor de dados: 58
Autores: Shi,Mei; Zhou,Yaping; Cao,Limin; Ding,Cuijun; Ji,Yun; Jiang,Qinbo; Liu,Xiping; Li,Xiang; Hou,Xueling; Peng,Hongjun; Shi,Weifeng.
The VPl gene of enterovirus 71 (EV71) was synthesized, construct a recombinant plasmid pET15b/VP1 and expressed in E. coli BL21. The recombinant VP1 protein could specifically react with EV71-infected patient sera without the cross-reaction with serum antibodies of coxsackievirus A16 (CA16), A4, A5, B3 and B5 as well as echovirus 6. In acute and convalescent phases, IgM and IgG antibodies of 182 serum samples were detected by ELISA with recombinant VP1 protein as a coated antigen. The results showed that the sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) of IgM antibodies in serum samples for the diagnosis of EV71 infection were 90.1, 98.4, 98.8 and 88.7%, respectively; similarly, those of IgG antibodies in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Enterovirus 71; Gene cloning; Recombinant VPl protein; ELISA.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400027

Cgl-SLT2 is required for appressorium formation, sporulation and pathogenicity in Colletotrichum gloeosporioide
Provedor de dados: 58
Autores: Yong,H.Y.; Bakar,F.D.A.; Illias,R.M.; Mahadi,N.M.; Murad,A.M.A.
The mitogen-activated protein (MAP) kinase pathways has been implicated in the pathogenicity of various pathogenic fungi and plays important roles in regulating pathogenicity-related morphogenesis. This work describes the isolation and characterization of MAP kinase gene, Cgl-SLT2, from Colletotrichum gloeosporioides. A DNA sequence, including 1,633 bp of Cgl-SLT2 open-reading frame and its promoter and terminator regions, was isolated via DNA walking and cloned. To analyze gene function, a gene disruption cassette containing hygromycin-resistant gene was constructed, and Cgl-SLT2 was inactivated via gene deletion. Analysis on Cgl-slt2 mutant revealed a defect in vegetative growth and sporulation as compared to the wild-type strain. When grown under...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Colletotrichum gloeosporioides; MAP kinase; Pathogenicity; Appressorium.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400031

Antifungal activity of the ethanolic extracts of Punica granatum L. and evaluation of the morphological and structural modifications of its compounds upon the cells of Candida spp.
Provedor de dados: 58
Autores: Anibal,Paula Cristina; Peixoto,Iza Teixeira Alves; Foglio,Mary Ann; Höfling,José Francisco.
Ethanolic crude extracts prepared from the arils and seeds, pericarp, peels and from the whole fruit of Punica granatum, known as pomegranate, had their antifungal activity tested against Candida spp. The ethanolic crude extracts were analyzed by Mass Spectrometry and yielded many compounds such as punicalagin and galladydilacton. The extracts from the pericarp and peel showed activity against Candida spp., with MICs of 125 µg/mL. The effect of pericarp and peel extracts upon the morphological and structure of C. albicans and C. krusei were examined by scanning and transmission electron microscopy, with the visualization of an irregular membrane and hyphae, formation of vacuoles and thickening of the cell wall. The data obtained revealed potential...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Punica granatum; Punicalagin; Antifungal activity; Candida spp.; Electron microscopy.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300027

The influence of ripening period length and season on the microbiological parameters of a traditional Brazilian cheese
Provedor de dados: 58
Autores: Cardoso,Valéria M.; Dias,Ricardo S.; Soares,Barbara M.; Clementino,Letícia A.; Araújo,Cristiano P.; Rosa,Carlos A.
The ripening process of Serro Minas cheese, one of the most popular cheeses produced with raw milk in Brazil, was studied over the course of 60 days of ripening during dry and rainy seasons. Brazilian legislation prohibits the production of cheese from raw milk unless it was submitted to a maturation period greater than 60 days. However Minas Serro cheese is sold within a few days of ripening. A total of 100 samples of Serro cheese were obtained from five farms; 50 samples were collected during the dry season (winter in Brazil) and 50 samples were collected during the rainy season (summer in Brazil). From each farm, ten cheeses were collected during each season after two days of ripening. Our results showed high levels of total and fecal coliforms at the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Traditional Minas cheese; Ripening; Total and fecal coliforms; Coagulase-positive staphylococci; Staphylococcal enterotoxins.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300012

Isolation, morphological and molecular characterization of phytate-hydrolysing fungi by 18S rDNA sequence analysis
Provedor de dados: 58
Autores: Gontia-Mishra,Iti; Deshmukh,Dhanshree; Tripathi,Niraj; Bardiya-Bhurat,Khushboo; Tantwai,Keerti; Tiwari,Sharad.
Phytate is the primary storage form of phosphate in plants. Monogastric animals like poultry, pigs and fishes have very low or no phytase activities in their digestive tracts therefore, are incapable to efficiently utilize phytate phosphorus from the feed. Phytase from microbial sources are supplemented to feedstuff of these to increase the uptake of phytate phosphorus. In the present work efforts were made to isolate and characterize proficient phytase producing fungi from soil. Phytase producing fungi were isolated using phytate specific medium. Fungal isolates were selected according to their higher phytase activities. These isolates were further characterized and identified by morphological and microscopic analysis and confirmed by amplification of 18S...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phytase; Phytate; Fungi; 18S rRNA gene; Aspergillus.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100046

Application of statistical experimental design for optimisation of bioinsecticides production by sporeless Bacillus thuringiensis strain on cheap medium
Provedor de dados: 58
Autores: Ben Khedher,Saoussen; Jaoua,Samir; Zouari,Nabil.
In order to overproduce bioinsecticides production by a sporeless Bacillus thuringiensis strain, an optimal composition of a cheap medium was defined using a response surface methodology. In a first step, a Plackett-Burman design used to evaluate the effects of eight medium components on delta-endotoxin production showed that starch, soya bean and sodium chloride exhibited significant effects on bioinsecticides production. In a second step, these parameters were selected for further optimisation by central composite design. The obtained results revealed that the optimum culture medium for delta-endotoxin production consists of 30 g L-1 starch, 30 g L-1 soya bean and 9g L-1 sodium chloride. When compared to the basal production medium, an improvement in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sporeless Bacillus thuringiensis; Delta-endotoxins; Cheap medium; Optimisation; Response surface methodology.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300043

First record of Borrelia burgdorferi B31 strain in Dermacentor nitens ticks in the northern region of Parana (Brazil)
Provedor de dados: 58
Autores: Gonçalves,Daniela Dib; Carreira,Teresa; Nunes,Mónica; Benitez,Aline; Lopes-Mori,Fabiana Maria Ruiz; Vidotto,Odilon; Freitas,Julio Cesar de; Vieira,Maria Luísa.
The aim of this study was to investigate the presence of DNA of Borrelia burgdorferi sensu lato (s.l.) in ticks that feed on horses used for animal traction in rural Jataizinho, Parana, Brazil. Between February and June 2008, a total of 224 ticks was collected of which 75% were identified as Dermacentor nitens and 25% as Amblyomma cajenense. To amplify B. burgdorferi s.l. DNA, the intergenic space region (ISR) between the 5S (rrf) 23S (rrl) rRNA genes was used as targets for nested-PCR. Two ticks of the D. nitens species were positive for B. burgdorferi s.l. Both species showed a fragment of 184 bp, but the sequencing revealed 99.9% homology with the B. burgdorferi sensu stricto (s.s.) strain B31. These results showed, for the first time, the presence of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ticks; Dermacentor nitens; Borrelia burgdorferi sensu lato; Equine; Rural area.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300035

Production and partial characterization of serine and metallo peptidases secreted by Aspergillus fumigatus Fresenius in submerged and solid state fermentatio
Provedor de dados: 58
Autores: Silva,Ronivaldo Rodrigues da; Cabral,Tatiana Pereira de Freitas; Rodrigues,André; Hamilton,Cabral.
Enzyme production varies in different fermentation systems. Enzyme expression in different fermentation systems yields important information for improving our understanding of enzymatic production induction. Comparative studies between solid-state fermentation (SSF) using agro-industrial waste wheat bran and submerged fermentation (SmF) using synthetic media were carried out to determinate the best parameters for peptidase production by the fungus Aspergillus fumigatus Fresen. Variables tested include: the concentration of carbon and protein nitrogen sources, the size of the inoculum, the pH of the media, temperature, and the length of the fermentation process. The best peptidase production during SSF was obtained after 96 hours using wheat bran at 30 ºC...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Metallopeptidase; Serine peptidase; Fermentative parameters; Aspergillus fumigatus.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100034

Morphological and molecular characterization of Fusarium. solani and F. oxysporum associated with crown disease of oil palm
Provedor de dados: 58
Autores: Hafizi,R.; Salleh,B.; Latiffah,Z.
Crown disease (CD) is infecting oil palm in the early stages of the crop development. Previous studies showed that Fusarium species were commonly associated with CD. However, the identity of the species has not been resolved. This study was carried out to identify and characterize through morphological approaches and to determine the genetic diversity of the Fusarium species. 51 isolates (39%) of Fusarium solani and 40 isolates (31%) of Fusarium oxysporum were recovered from oil palm with typical CD symptoms collected from nine states in Malaysia, together with samples from Padang and Medan, Indonesia. Based on morphological characteristics, isolates in both Fusarium species were classified into two distinct morphotypes; Morphotypes I and II. Molecular...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crown disease; Fusarium solani; Fusarium oxysporum; IGS-RFLP; Morphological characteristic.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300047

Assessment of the effectiveness of the PPD-mallein produced in Brazil for diagnosing glanders in mules
Provedor de dados: 58
Autores: Silva,Karla Patrícia Chaves da; Takaki,Galba Maria de Campos; Silva,Leonildo Bento Galiza da; Saukas,Tomoe Noda; Santos,André Souza; Mota,Rinaldo Aparecido.
To assess the potency of the PPD-mallein produced in Brazil, five animals were from a property identified as a focus of glanders. These animals had suggestive clinical signs of the disease and the other five, from a property free from glanders, showed no clinical signs and were serology negative (control group). PPD-mallein from Burkholderia mallei was obtained by precipitation with trichlo-roa-cetic acid and ammonium sulfate. The animals were inoculated according to the criteria established by Department of Agriculture, Livestock and Supply (MAPA) for the diagnosis of glanders. After 48 h of application of PPD-mallein, there was swelling in the area of application, presence of ocular secretion and tears in sick animals. The control group showed no...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mallein test; Equus asinus; Diagnosis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100027

Reduction of Aeromonas hidrophyla biofilm on stainless stell surface by essential oils
Provedor de dados: 58
Autores: Millezi,Alessandra Farias; Cardoso,Maria das Graças; Alves,Eduardo; Piccoli,Roberta Hilsdorf.
This study demonstrates the possibility of using sanitizing detergents based on natural products for the elimination and/or reduction of Aeromonas hydrophila biofilm formed on stainless steel surfaces. The goal of this work was to determine the reduction effect of sanitizing detergents containing essential oils of Thymus vulgaris (thyme) and Cymbopogon citratus (lemongrass) on biofilm formed by A. hydrophila on AISI 304 stainless steel coupons, using UHT skimmed milk as substratum. There was adhesion and biofilm formation by A. hydrophila at 28 ºC, presenting 7.60 log cfu.cm-2 after the fourth day of cultivation. There was no significant difference between the lemongrass treatment and that of the thyme oil (p &lt; 0.05). However, both treatments...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Thymus vulgaris; Cymbopogon citratus; Natural disinfectants; Sanitation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100010

Evaluation of the antibacterial potential of Petroselinum crispum and Rosmarinus officinalis against bacteria that cause urinary tract infections
Provedor de dados: 58
Autores: Petrolini,Fernanda Villas Boas; Lucarini,Rodrigo; Souza,Maria Gorete Mendes de; Pires,Regina Helena; Cunha,Wilson Roberto; Martins,Carlos Henrique Gomes.
In this study we evaluated the antibacterial activity of the crude hydroalcoholic extracts, fractions, and compounds of two plant species, namely Rosmarinus officinalis and Petroselinum crispum, against the bacteria that cause urinary tract infection. The microdilution method was used for determination of the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC). The crude hydroalcoholic extract of R. officinalis displayed in vitro activity against Gram-positive bacteria, with satisfactory MBC for the clinical isolate S. saprophyticus. The fractions and the pure compound rosmarinic acid did not furnish promising results for Gram-negative bacteria, whereas fractions 2, 3, and 4 gave encouraging results for Gram-positive...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antibacterial activity; Bioassay; Rosmarinus officinalis; Petroselinum crispum; Urinary Tract Infections (UTI).
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300025

Genetic profiling of Klebsiella pneumoniae: comparison of pulsed field gel electrophoresis and random amplified polymorphic DNA
Provedor de dados: 58
Autores: Ashayeri-Panah,Mitra; Eftekhar,Fereshteh; Ghamsari,Maryam Mobarak; Parvin,Mahmood; Feizabadi,Mohammad Mehdi.
In this study, the discriminatory power of pulsed field gel electrophoresis (PFGE) and random amplified polymorphic DNA (RAPD) methods for subtyping of 54 clinical isolates of Klebsiella pneumoniae were compared. All isolates were typeable by RAPD, while 3.6% of them were not typeable by PFGE. The repeatability of both typing methods were 100% with satisfying reproducibility (≥ 95%). Although the discriminatory power of PFGE was greater than RAPD, both methods showed sufficient discriminatory power (DI &gt; 0.95) which reflects the heterogeneity among the K. pneumoniae isolates. An optimized RAPD protocol is less technically demanding and time consuming that makes it a reliable typing method and competitive with PFGE.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Klebsiella pneumoniae; Pulsed field gel electrophoresis; Random amplified polymorphic DNA; Genotyping.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300024

Evaluation of a multiplex selective enrichment broth SEL for simultaneous detection of injured Salmonella, Escherichia coli O157:H7 and Listeria monocytogenes
Provedor de dados: 58
Autores: Suo,Biao; Wang,Yuexia.
Although many rapid and high throughput molecular methods have been developed in the recent years for the multiplex detection of foodborne pathogens, the simultaneous recovery and enrichment of sublethally injured cells is still a problem that needs to be considered. Combined with previous established multiplex real-time PCR assay, the capability of simultaneous recovery and enrichment of sublethally injured Salmonella, E. coli O157:H7 and L. monocytogenes cells was evaluated in a multiplex selective enrichment broth SEL. The injured cells were obtained by heat shock. After evaluation of different procedures, 1 h of recovery period prior to 20 h of enrichment was proved to be necessary for the detection of less than 10 CFU/5 mL broth of injured L....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sublethal injury; SEL broth; Multiplex detection; Foodborne pathogen.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300011

Gene detection and toxin production evaluation of hemolysin BL of Bacillus cereus isolated from milk and dairy products marketed in Brazil
Provedor de dados: 58
Autores: Reis,Andre L.S.; Montanhini,Maike T.M.; Bittencourt,Juliana V.M.; Destro,Maria T.; Bersot,Luciano S.
Bacillus cereusis an ubiquitous, spore-forming bacteria that can survive pasteurization and the majority of the heating processes used in the dairy industry. Besides, it is a pathogen responsible for different types of food poisoning. One type of foodborne disease caused by B.cereusis the diarrheal syndrome, which is caused by the ingestion of vegetative cells producing toxins in the small intestine. One virulence factor for the diarrheal syndrome is the toxin hemolysin BL (HBL), a three-component protein formed by the L1, L2 and B components. In order to evaluate the presence of diarrheal strains isolated from milk and dairy products, 63 B. cereus isolates were obtained from 260 samples of UHT milk, pasteurized milk and powdered milk, sold in commercial...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Milk; Dairy products; Bacillus cereus; Pathogenicity; Detection.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400024

Characterization of mercury-resistant clinical Aeromonas species
Provedor de dados: 58
Autores: Pérez-Valdespino,Abigail; Celestino-Mancera,Martin; Villegas-Rodríguez,Viridiana Lorena; Curiel-Quesada,Everardo.
Mercury-resistant Aeromonas strains isolated from diarrhea were studied. Resistance occurs via mercuric ion reduction but merA and merR genes were only detected in some strains using PCR and dot hybridization. Results indicate a high variability in mer operons in Aeromonas. To our knowledge, this is the first report of mercury-resistant clinical Aeromonas strains.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aeromonas; Mercury resistance; Clinical strains.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400036

Yeast biomass production: a new approach in glucose-limited feeding strategy
Provedor de dados: 58
Autores: Vieira,Érika Durão; Andrietta,Maria da Graça Stupiello; Andrietta,Silvio Roberto.
The aim of this work was to implement experimentally a simple glucose-limited feeding strategy for yeast biomass production in a bubble column reactor based on a spreadsheet simulator suitable for industrial application. In biomass production process using Saccharomyces cerevisiae strains, one of the constraints is the strong tendency of these species to metabolize sugars anaerobically due to catabolite repression, leading to low values of biomass yield on substrate. The usual strategy to control this metabolic tendency is the use of a fed-batch process in which where the sugar source is fed incrementally and total sugar concentration in broth is maintained below a determined value. The simulator presented in this work was developed to control molasses...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Yeast; Biomass; Fed-batch; Process simulation; Saccharomyces cerevisiae.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200035

First identification of Mycobacterium avium paratuberculosis sheep strain in Argentina
Provedor de dados: 58
Autores: Travería,G.E.; Zumarraga,M.; Etchechoury,I.; Romano,M.I.; Cataldi,A.; Alvarado Pinedo,M.F.; Pavlik,I.; Pribylova,R.; Romero,J.R.
We here identified for the first time the presence of Mycobacterium avium paratuberculosis (MAP) sheep (S) strain in Argentina. IS900 polymerase chain reaction (PCR) was positive. The S strain was compared with MAP cattle (C) strains by using IS1311 PCR-restriction endonuclease analysis (PCR-REA), multiplex PCR and restriction fragment length polymorphism (RFLP) analysis.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Paratuberculosis; Sheep; Typing; PCR; PCR-REA.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300037

Antagonistic activity of Lactobacillus acidophilus LA10 against Salmonella enterica serovar Enteritidis SE86 in mice
Provedor de dados: 58
Autores: Scapin,Diane; Grando,Williani Fabiola; Rossi,Eliandra Mirlei; Perez,Karla Joseane; Malheiros,Patrícia da Silva; Tondo,Eduardo Cesar.
Salmonella enterica serovar Enteritidis is one of the main pathogens responsible for foodborne illness in Brazil. Probiotic bacteria can play a role in defense and recovery from enteropathogenic -infections. In this study, the ability of Lactobacillus acidophilus LA10 to colonise and exert anta-gonistic effects in the gastrointestinal tract was tested before and during experimental infection in conventional mice contaminated with S. Enteritidis (SE86). A dose of 0.1 mL containing 10(8) viable cells of SE86 and L. acidophilus LA10 was orally administered by gavage to mice. The experiment was divided into groups. As a negative control, Group 1 was administered only sterile saline solution. As a positive control, Group 2 was administered only SE86. Group 3...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: S. Enteritidis SE86; Probiotics; Mice; Lactobacillus acidophilus LA10.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100008

Mycological contamination in dental unit waterlines in Istanbul, Turkey
Provedor de dados: 58
Autores: Kadaifciler,Duygu Göksay; Ökten,Suzan; Sen,Burhan.
Studies on dental units (DUs) are conducted either for the prevention or the reduction of the density of bacterial contamination in dental unit waterlines (DUWLs). However, the existence of fungi in the these systems requires more attention. During dental treatment, direct contact with water contaminated with fungi such as Candida, Aspergillus, or inhalation of aerosols from high-speed drill may cause various respiratory infections, such as asthma, allergies, and wounds on mucose membranes, especially on immunocompromised patients and dentists. The aims of this study are to investigate the number and colonization of fungi in DUWLs in the city of Istanbul, Turkey. Water samples were collected from air-water syringes, high-speed drills, and inlet waters from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dental unit waterlines; Dental equipments; Filamentous fungi; Mycological contamination; Yeast.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300049

EsxA might as a virulence factor induce antibodies in patients with Staphylococcus aureus infection
Provedor de dados: 58
Autores: Zhou,Huiqin; Du,Hong; Zhang,Haifang; Shen,Haiying; Yan,Ruhong; He,Yun; Wang,Min; Zhu,Xueming.
Staphylococcus aureus (S. aureus) is an important human pathogen, which commonly causes the acquired infectious diseases in the hospital and community. Effective and simple antibiotic treatment against S. aureus-related disease becomes increasingly difficult. Developing a safe and effective vaccine against S. aureus has become one of the world's hot spots once again. The key issue of developing the vaccine of S. aureus is how to find an ideal key pathogenic gene of S. aureus. It was previously suggested that EsxA might be a very important factor in S. aureus abscess formation in mice, but clinical experimental evidence was lacking. We therefore expressed EsxA protein through prokaryotic expression system and purified EsxA protein by Ni-affinity...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: S. aureus; EsxA; Anti-EsxA antibodies; Multi-drug resistant.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100038

Effects of open drainage ditch design on bacterial and fungal communities of cold waterlogged paddy soils
Provedor de dados: 58
Autores: Qiu,Shanlian; Wang,MK; Wang,Fei; Chen,Jichen; Li,Xiaoyan; Li,Qinghua; Lin,Cheng; Lin,Xinjian.
A field experiment established in 1980 was conducted to evaluate the effects of open drainage ditch applied for water removal on bacterial and fungal communities of cold waterlogged paddy soils in 2011. In this experiment, traditional plate counting and temperature gradient gel electrophoresis were employed to characterize the abundance and diversity of soil bacterial and fungal communities. Four different distances from the open drainage ditch, 5, 15, 25 and 75 m with different degrees of drainage were designed for this study. Maximum populations of culturable aerobic bacteria and fungi were at 15-m distance while minimum populations were at 75-m distance. Significant differences (p &lt; 0.05) in fungal populations were observed at all distances from open...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abundance; Bacterial and fungal communities; Diversity; Open drainage ditch.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300050

The potential effects of Zataria multiflora Boiss essential oil on growth, aflatoxin production and transcription of aflatoxin biosynthesis pathway genes of toxigenic Aspergillus parasiticus
Provedor de dados: 58
Autores: Yahyaraeyat,R.; Khosravi,A.R.; Shahbazzadeh,D.; Khalaj,V.
This study aims at evaluating the effects of Zataria multiflora (Z. multiflora) essential oil (EO) on growth, aflatoxin production and transcription of aflatoxin biosynthesis pathway genes. Total RNAs of Aspergillus parasiticus (A.parasiticus) ATCC56775 grown in yeast extract sucrose (YES) broth medium treated with Z. multiflora EO were subjected to reverse transcription-polymerase chain reaction (RT-PCR). Specific primers of nor-1, ver-1, omt-A and aflR genes were used. In parallel mycelial dry weight of samples were measured and all the media were assayed by high-pressure liquid chromatography (HPLC) for aflatoxinB1 (AFB1), aflatoxinB2 (AFB2), aflatoxinG1 (AFG1), aflatoxinG2 (AFG2) and aflatoxin total (AFTotal) production. The results showed that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zataria multiflora; Reverse transcription-polymerase chain reaction; Aflatoxin; Aspergillus parasiticus.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200045

Plasmid-mediated quinolone resistance (PMQR) and mutations in the topoisomerase genes of Salmonella enterica strains from Brazil
Provedor de dados: 58
Autores: Ferrari,Rafaela; Galiana,Antonio; Cremades,Rosa; Rodríguez,Juan Carlos; Magnani,Marciane; Tognim,M.C.B.; Oliveira,Tereza C.R.M.; Royo,Gloria.
The objective of this study was to identify mutations in the Quinolone Resistance Determining sources Regions (QRDR) of the gyrA, gyrB, parC, and parE genes and to determine if any of the qnr variants or the aac(6')-Ib-cr variant were present in strains of Salmonella spp. isolated in Brazil. A total of 126 Salmonella spp. strains from epidemic (n = 114) and poultry (n = 12) origin were evaluated. One hundred and twelve strains (88.8%) were resistant to nalidixic acid (NAL) and 29 (23.01%) showed a reduced susceptibility to ciprofloxacin (Cip). The mutations identified were substitutions limited to the QRDR of the gyrA gene in the codons for Serine 83, Aspartate 87 and Alanine 131. The sensitivity to NAL seems to be a good phenotypic indication of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Salmonella; PMQR; QRDR mutation; Quinolone; Ciprofloxacin.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200046

Frequency of plasmid-mediated AmpC in Enterobacteriaceae isolated in a Brazilian Teaching Hospital
Provedor de dados: 58
Autores: Campana,Eloiza H.; Barbosa,Paula P.; Fehlberg,Lorena C.C.; Gales,Ana C.
In Brazil, the presence of plasmid-mediated AmpC (pAmpC)-producing isolates has been sporadically reported. We evaluated the frequency of pAmpC among 133 Enterobacteriaceae clinical isolates. The blaCMY-2-like gene was detected in a single Klebsiella pneumoniae isolate. In our study, the pAmpC frequency was very low as previously reported.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Plasmids; Beta-lactamases; Beta-lactams; Brazil.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200023

Hexavalent chromium reduction by aerobic heterotrophic bacteria indigenous to chromite mine overburden
Provedor de dados: 58
Autores: Satarupa,Dey; Paul,A.K.
Microbiological analysis of overburden samples collected from chromite mining areas of Orissa, India revealed that they are rich in microbial density as well as diversity and dominated by Gramnegative (58%) bacteria. The phenotypically distinguishable bacterial isolates (130) showed wide degree of tolerance to chromium (2-8 mM) when tested in peptone yeast extract glucose agar medium. Isolates (92) tolerating 2 mM chromium exhibited different degrees of Cr+6 reducing activity in chemically defined Vogel Bonner (VB) broth and complex KSC medium. Three potent isolates, two belonging to Arthrobacter spp. and one to Pseudomonas sp. were able to reduce more than 50 and 80% of 2 mM chromium in defined and complex media respectively. Along with Cr+6 (MIC 8.6-17.8...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chromite overburden; Hexavalent chromium; Chromate reduction; Arthrobacter; Pseudomonas.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100045

A fatal case of urosepsis due to Corynebacterium riegelii
Provedor de dados: 58
Autores: Aygun,Gokhan; Midilli,Kenan; Cilingir,Hatice; Yilmaz,Mesut; Kutukcu,Aysegul; Eker,Engin.
Corynebacterium species other than Corynebacterium diphtheriae rarely cause infections in human but rather reside in flora, however they have been reported to cause opportunistic infections in both immunocompromised and immunecompetent patients. Here we report for the first time a case of an elderly female patient presenting with a fatal urosepsis caused by a recently defined pathogen, Corynebacterium riegelii, identified on second day after patient hospitalization leading to a progressive worsening and death of the patient on 6th day.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Corynebacterium riegelii; Urosepsis; PCR amplification.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200022

Bacterial consortium for copper extraction from sulphide ore consisting mainly of chalcopyrite
Provedor de dados: 58
Autores: Romo,E.; Weinacker,D.F.; Zepeda,A.B.; Figueroa,C.A.; Chavez-Crooker,P.; Farias,J.G.
The mining industry is looking forward for bacterial consortia for economic extraction of copper from low-grade ores. The main objective was to determine an optimal bacterial consortium from several bacterial strains to obtain copper from the leach of chalcopyrite. The major native bacterial species involved in the bioleaching of sulphide ore (Acidithiobacillus ferrooxidans, Acidithiobacillus thiooxidans, Leptospirillum ferrooxidans and Leptospirillum ferriphilum) were isolated and the assays were performed with individual bacteria and in combination with At. thiooxidans. In conclusion, it was found that the consortium integrated by At. ferrooxidans and At. thiooxidans removed 70% of copper in 35 days from the selected ore, showing significant differences...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioleaching; Acidithiobacillus ferrooxidans; Acidithiobacillus thiooxidans.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200032

Isolation and characterization of novel thermophilic lipase-secreting bacteria
Provedor de dados: 58
Autores: Rabbani,Mohammed; Bagherinejad,Mohammad Reza; Sadeghi,Hamid MirMohammad; Shariat,Ziaedin Samsam; Etemadifar,Zahra; Moazen,Fatemeh; Rahbari,Manizheh; Mafakher,Ladan; Zaghian,Saeideh.
The purpose of the present study was to screen and identify the lipase-producing microorganisms from various regions of Iran. Samples collected from hot spring, Persian Gulf, desert area and oil-contaminated soil, were analyzed for thermophilic extracellular-lipase producing organisms. Six strains with high activity on rhodamine B plates were selected for chemical identification and further study. Among these isolated bacteria, four strains show higher activity in pH-Stat method at 55 °C. These strains were identified by PCR amplification of 16s rRNA genes using universal primers. Fermentation increased the activity up to 50%. The growth medium, designed for lipase production, increased the activity up to 4.55 folds. The crude supernatant of ZR-5 after...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Extracellular lipase; PH-stat method; Thermophilic lipase; Fermentation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400013

Detection of Salmonella spp, Salmonella Enteritidis and Typhimurium in naturally infected broiler chickens by a multiplex PCR-based assay
Provedor de dados: 58
Autores: Paião,F.G.; Arisitides,L.G.A.; Murate,L.S.; Vilas-Bôas,G.T.; Vilas-Boas,L.A.; Shimokomaki,M.
The presence of Salmonella in the intestinal tract, on the chickens skin and among their feathers, may cause carcasses contamination during slaughtering and processing and possibly it is responsible by the introduction of this microorganism in the slaughterhouses. A rapid method to identify and monitor Salmonella and their sorovars in farm is becoming necessary. A pre-enriched multiplex polymerase chain reaction (m-PCR) assay employing specific primers was developed and used to detect Salmonella at the genus level and to identify the Salmonella enterica serovar Enteritidis (S. Enteritidis) and Salmonella enterica serovar Typhimurium (S. Typhimurium) in broiler chicken swab samples. The method was validated by testing DNA extract from 90 fresh culture...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aviculture; Bacteria; Detection.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100005

Action of phosphorylated mannanoligosaccharides on immune and hematological responses and fecal consistency of dogs experimentally infected with enteropathogenic Escherichia coli strains
Provedor de dados: 58
Autores: Gouveia,E.M.M.F.; Silva,I.S.; Nakazato,G.; Onselem,V.J.V.; Corrêa,R.A.C.; Araujo,F.R.; Chang,M.R.
The therapeutic action of phosphorylated mannanoligosaccharides (MOS) was investigated regarding its prebiotic activity on enteropathogenic Escherichia coli (EPEC). Diarrhea was induced in dogs by experimental infection with EPEC strains. Then MOS was supplied once a day, in water for 20 days. Immunological (IgA and IgG), hematological (lymphocytes, neutrophils and monocytes) and bacteriological variables (PCR detection of the eae gene of EPEC recovered from stool culture), as well as occurrence of diarrhea were evaluated. All strains caused diarrhea at 24, 48 and 72 h after infection. PCR results indicated that E. coli isolated from stool culture of all infected animals had the eae gene. There was no significant difference among groups as to number of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Enteropathogenic E. coli; In vivo experiment; Dogs; Phosphorylated 31 mannanoligo saccharides; PCR.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200027

Evaluation of stress tolerance and fermentative behavior of indigenous Saccharomyces cerevisiae
Provedor de dados: 58
Autores: Ramos,Cíntia Lacerda; Duarte,Whasley Ferreira; Freire,Ana Luiza; Dias,Disney Ribeiro; Eleutherio,Elis Cristina Araújo; Schwan,Rosane Freitas.
Sixty six indigenous Saccharomyces cerevisiae strains were evaluated in stressful conditions (temperature, osmolarity, sulphite and ethanol tolerance) and also ability to flocculate. Eighteen strains showed tolerant characteristics to these stressful conditions, growing at 42 ºC, in 0.04% sulphite, 1 mol L-1 NaCl and 12% ethanol. No flocculent characteristics were observed. These strains were evaluated according to their fermentative performance in sugar cane juice. The conversion factors of substrates into ethanol (Yp/s), glycerol (Yg/s) and acetic acid (Yac/s), were calculated. The highest values of Yp/s in sugar cane juice fermentation were obtained by four strains, one isolated from fruit (0.46) and the others from sugar cane (0.45, 0.44 and 0.43)....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alcoholic fermentation; Biofuel; Fermentation kinetics; UFLA FW221; Saccharomyces cerevisiae.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300044

Establishment of an inducing medium for type III effector secretion in Xanthomonas campestris pv. campestris
Provedor de dados: 58
Autores: Jiang,Guo-Feng; Jiang,Bo-Le; Yang,Mei; Liu,San; Liu,Jiao; Liang,Xiao-Xia; Bai,Xian-Fang; Tang,Dong-Jie; Lu,Guang-Tao; He,Yong-Qiang; Yu,Di-Qiu; Tang,Ji-Liang.
It is well known that the type III secretion system (T3SS) and type III (T3) effectors are essential for the pathogenicity of most bacterial phytopathogens and that the expression of T3SS and T3 effectors is suppressed in rich media but induced in minimal media and plants. To facilitate in-depth studies on T3SS and T3 effectors, it is crucial to establish a medium for T3 effector expression and secretion. Xanthomonas campestris pv. campestris (Xcc) is a model bacterium for studying plant-pathogen interactions. To date no medium for Xcc T3 effector secretion has been defined. Here, we compared four minimal media (MME, MMX, XVM2, and XOM2) which are reported for T3 expression induction in Xanthomonas spp. and found that MME is most efficient for expression...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Inducing medium; Type III effector secretion; Xanthomonas.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300045

Seroprevalence of Hepatitis B and C markers at the population level in the municipality of Caxias do Sul, southern Brazil
Provedor de dados: 58
Autores: Menegol,Débora; Spilki,Fernando Rosado.
Chronic viral hepatitis are main public health problems worldwide. Data about the seroprevalence to Hepatitis B and C viruses (HBV e HCV) at the population level are scarce on Brazil and especially for the Southern region of the country. The seroprevalence to HBV and HBC antigens was evaluated on a large portion of the population of the municipality of Caxias do Sul (427,858 inhabitants), Brazil. A total of 60,604 individual serum samples collected from 2008 to 2011 were screened for HBV surface antigen (HBsAg) and for antibodies against HBsAg; anti HCV antibodies were measured by ELISA (Enzyme Linked Immunosorbent Assay). Overall, 1.63% of the individuals were positive for HBsAg and 1.43% showed seropositivity to HCV. From the total, 31,749 samples were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hepatitis B virus; Hepatitis C virus; Seroprevalence.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400030

Prevalence and antibiotic susceptibility of Bacteroides fragilis group isolated from stool samples in North Lebanon
Provedor de dados: 58
Autores: Yehya,Mariam; Hamze,Monzer; Mallat,Hassan; Dabbousi,Fouad.
Fifty one strains of the Bacteroides fragilis group were isolated from 45 fecal samples. Classical phenotypic identification showed that 16 isolates were B. thetaiotaomicron, 12 B. uniformis, 9 B. eggerthii,7 B. vulgatus,3 B. caccae,2 Parabacteroides distasonis with 1 identified B. ovatus and 1 B. fragilis. The 51 strains were tested for susceptibility against 16 antimicrobial agents and the MICs for metronidazole were determined. The tests showed that imipenem, meropenem and chloram-phenicol were the most effective antibiotics (98%, 98% and 92.16% of susceptibility, respectively) followed by ticarcillin/clavulanic acid, piperacillin/tazobactam, rifampin (88.24% susceptibility), moxifloxacin 86.27% and tigecycline 84.31%. Ofloxacin and cefotaxime were the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacteroides fragilis group; Anaerobic bacteria; Antibiotics susceptibility.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300022

Composition of Extracellular Polymeric Substances (EPS) produced by Flavobacterium columnare isolated from tropical fish in Brazil
Provedor de dados: 58
Autores: Sebastião,Fernanda de Alexandre; Pilarski,Fabiana; Lemos,Manoel Victor Franco.
Thirty nine isolates of Flavobacterium columnare from Brazilian fish farms had their carbohydrate composition of EPS evaluated by high efficiency liquid chromatography, using the phenol-sulfuric acid method of EPS. The occurrence of capsules on F. columnare cells was not directly related to biofilm formation, and the predominant monosaccharide is glucose.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biofilm; Extracellular polymeric substances; Flavobacterium columnare; Fish.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300030

Comparison of phenotypic and molecular tests to identify lactic acid bacteria
Provedor de dados: 58
Autores: Moraes,Paula Mendonça; Perin,Luana Martins; Silva Júnior,Abelardo; Nero,Luís Augusto.
Twenty-nine lactic acid bacteria (LAB) isolates were submitted for identification using Biolog, API50CHL, 16S rDNA sequencing, and species-specific PCR reactions. The identification results were compared, and it was concluded that a polyphasic approach is necessary for proper LAB identification, being the molecular analyzes the most reliable.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Lactic acid bacteria; Identification; 16sDNA; PCR; Biolog; API.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100015

Enhanced production of Aspergillus tamarii lipase for recovery of fat from tannery fleshings
Provedor de dados: 58
Autores: Dayanandan,A.; Rani,S. Hilda Vimala; Shanmugavel,M.; Gnanamani,A.; Rajakumar,G. Suseela.
The influence of various oil cakes has been investigated for high level production of lipase using Aspergillus tamarii MTCC 5152. By solid state fermentation in wheat bran containing 2.5% w/w gingili oil cake at 70% v/w moisture content the fungus produced a maximal yield of lipase (758 ± 3.61 u/g) after 5 days of incubation using 2% v/w inoculum containing 10(6) spores/mL. Wheat bran and gingili oil cake with supplementation of gingili oil (1.0% w/w), glucose (0.5% w/w) and peptone (0.5% w/w) gives an increased enzyme production of 793 ± 6.56 u/g. The enzyme shows maximum activity at pH 7.0, temperature 50 °C and was stable between the pH 5.0-8.0 and temperature up to 60 °C. Crude lipase (3%) applied to tannery fleshing shows 92% fat solubility. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Wheat bran; Oil cakes; Lipase; Tannery fleshing; Fat hydrolysis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400010

Biofilm formation on polystyrene under different temperatures by antibiotic resistant Enterococcus faecalis and Enterococcus faecium isolated from food
Provedor de dados: 58
Autores: Marinho,A.R.; Martins,P.D.; Ditmer,E.M.; d'Azevedo,P.A.; Frazzon,J.; Sand,S.T.Van Der; Frazzon,A.P.G.
The ability of antibiotic resistant E. faecalis and E. faecium isolated from food to form biofilm at different temperatures in the absence or presence of 0.75% glucose was evaluated. A synergistic effect on biofilm at 10 °C, 28 °C, 37 °C and 45 °C and glucose was observed for E. faecalis and E. faecium.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Enterococci; Resistant; Food; Temperatures; Biofilm; Polystyrene.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200012

Incidence and multiplex PCR based detection of trichothecene chemotypes of Fusarium culmorum isolates collected from freshly harvested Maize kernels in Southern India
Provedor de dados: 58
Autores: Venkataramana,M.; Shilpa,P.; Balakrishna,K.; Murali,H.S.; Batra,H.V.
Hundred Fusarium culmorum strains, isolated from freshly harvested maize grain samples from Southern parts of India, were incubated in czapek-dox medium and analyzed for trichothecene (DON/NIV) production. The mPCR assay was standardized targeting trichothecene metabolic pathway genes viz., Tri6, Tri7, Tri13 for detection of trichothecene (DON/NIV) chemotypes and rDNA gene for specific detection of F. culmorum species. Primers for targeted genes were designed and used to predict whether these isolates could produce deoxynivalenol/nivalenol, 94 isolates were able to produce DON/NIV by mPCR assay. Chemical analysis of DON/NIV was carried out for mPCR positive isolates by high performance-thin layer chromatography (HPTLC). To check the practical usefulness of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Deoxynivalenol; Nivalenol; Multiplex PCR assay; HPTLC.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200009

Prevalence and quantification of Listeria monocytogenes in beef offal at retail level in Selangor, Malaysia
Provedor de dados: 58
Autores: Kuan,Chee Hao; Wong,Woan Chwen; Pui,Chai Fung; Mahyudin,Nor Ainy; Tang,John Yew Huat; Nishibuchi,Mitsuaki; Radu,Son.
A total of 63 beef offal samples (beef liver = 16; beef lung = 14; beef intestine = 9; beef tripe = 15; beef spleen = 9) from three wet markets (A, B, and C) in Selangor, Malaysia were examined for the prevalence and microbial load of Listeria monocytogenes. A combination of the most probable number and polymerase chain reaction (MPN-PCR) method was employed in this study. It was found that L. monocytogenes detected in 33.33% of the beef offal samples. The prevalence of L. monocytogenes in beef offal purchased from wet markets A, B, and C were 22.73%, 37.50% and 41.18% respectively. The density of L. monocytogenes in all the samples ranged from&lt;3upto&amp;gt; 2,400 MPN/g. The findings in this study indicate that beef offal can be a potential vehicle of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Listeria monocytogenes; Most probable number (MPN); Polymerase chain reaction (PCR); Beef offal; Prevalence.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400020

Prediction of acid lactic-bacteria growth in turkey ham processed by high hydrostatic pressure
Provedor de dados: 58
Autores: Mathias,S.P.; Rosenthal,A.; Gaspar,A.; Aragão,G.M.F.; Slongo-Marcusi,A.
High hydrostatic pressure (HHP) has been investigated and industrially applied to extend shelf life of meat-based products. Traditional ham packaged under microaerophilic conditions may sometimes present high lactic acid bacteria population during refrigerated storage, which limits shelf life due to development of unpleasant odor and greenish and sticky appearance. This study aimed at evaluating the shelf life of turkey ham pressurized at 400 MPa for 15 min and stored at 4, 8 and 12 ºC, in comparison to the non pressurized product. The lactic acid bacteria population up to 10(7) CFU/g of product was set as the criteria to determine the limiting shelf life According to such parameter the pressurized sample achieved a commercial viability within 75 days when...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: High hydrostatic pressure; Predictive models; Lactic acid bacteria; Turkey ham.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100003

Molecular identification of Lactobacillus spp. associated with puba, a Brazilian fermented cassava food
Provedor de dados: 58
Autores: Crispim,S.M.; Nascimento,A.M.A.; Costa,P.S.; Moreira,J.L.S.; Nunes,A.C.; Nicoli,J.R.; Lima,F.L.; Mota,V.T.; Nardi,R.M.D.
Puba or carimã is a Brazilian staple food obtained by spontaneous submerged fermentation of cassava roots. A total of 116 lactobacilli and three cocci isolates from 20 commercial puba samples were recovered on de Man, Rogosa and Sharpe agar (MRS); they were characterized for their antagonistic activity against foodborne pathogens and identified taxonomically by classical and molecular methods. In all samples, lactic acid bacteria were recovered as the dominant microbiota (7.86 ± 0.41 log10 CFU/g). 16S-23S rRNA ARDRA pattern assigned 116 isolates to the Lactobacillus genus, represented by the species Lactobacillus fermentum (59 isolates), Lactobacillus delbrueckii (18 isolates), Lactobacillus casei (9 isolates), Lactobacillus reuteri (6 isolates),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Puba; Carimã; Fermented food; Lactobacillus spp.; Cassava; Antagonism.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100002

Molecular characterization of lactobacilli isolated from fermented idli batter
Provedor de dados: 58
Autores: Agaliya,Perumal Jayaprabha; Jeevaratnam,Kadirvelu.
Lactic acid bacteria are non pathogenic organism widely distributed in nature typically involved in a large number of spontaneous food fermentation. The purpose of this study was to characterize the bacteriocinogenic lactobacilli from fermented idli batter which can find application in biopreservation and biomedicine. Eight most promising lactobacilli were chosen from twenty two isolates based on their spectrum of activity against other lactic acid bacteria and pathogens. The eight lactobacilli were characterized based on the various classical phenotypic tests, physiological tests and biochemical tests including various carbohydrate utilization profiles. All isolates were homo fermentative, catalase, and gelatin negative. Molecular characterization was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Idli batter; Bacteriocin; Lactobacillus plantarum subsp. argentoratensis; Lactobacillus plantarum; Lactobacillus pentosus.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400025

Assessing the growth and recovery of Salmonella Enteritidis SE86 after sodium dichloroisocyanurate exposure
Provedor de dados: 58
Autores: Ferreira,Fernanda Stoduto; Horvath,Mariana Bandeira; Tondo,Eduardo Cesar.
The objective of the present study was to assess the growth and the recovery of Salmonella (S.) Enteritidis SE86 in different diluents, culture media and using different plating methods after the exposure to 200 mg/kg sodium dichloroisocyanurate (NaDCC). Before and after NaDCC exposure, SE86 was cultured at 30 °C and 7 °C in the following diluents: Peptone water (P), Saline solution (SaS), Peptone water+Saline solution (P+SaS), Peptone water+Tween 80+Lecithin+Sodium thiosulfate (P+N) and Saline solution+Tween 80+Lecithin+Sodium thiosulfate (SaS+N). The SaS diluent was chosen because it was able to maintain cells viable without growth and was further used for plating SE86 on non selective medium (Tryptic Soy Agar-TSA) and on selective media (Mannitol Lysine...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Salmonella Enteritidis SE86; Diluents; Plating methods; Stressed cells; Sodium dichloroi-socyanurate.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300018

Toxigenic potential of Fusarium graminearum isolated from maize of northwest Argentina
Provedor de dados: 58
Autores: Sampietro,D.A.; Apud,G.R.; Belizán,M.M.E.; Vattuone,M.A.; Catalán,C.A.N.
Twenty six isolates of Fusarium graminearum from grains of maize hybrids harvested in ±west Argentina were grown on autoclaved rice grain to assess their ability to produce type B trichothecenes. Chemical analysis indicated that 38% of isolates were nivalenol (NIV) producers only, 31% were major NIV producers with high DON(deoxynivalenol)/NIV ratios, 8% were major DON producers with minor NIV production, and 23% were DON producers only. Isolates showed a high variability in their toxigenic potential which was not related to fungal biomass. The distribution of the different chemotypes as well as the high and the low trichothecene-producing Fusarium isolates could not be associated to a geographical origin. Our results confirmed for the first time that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fusarium graminearum; Trichothecenes; Maize; Chemotypes.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200011

Comparison of resazurin microtiter assay performance and BACTEC MGIT 960 in the susceptibility testing of Brazilian clinical isolates of Mycobacterium tuberculosis to four first-line drugs
Provedor de dados: 58
Autores: Miyata,Marcelo; Pavan,Fernando Rogério; Sato,Daisy Nakamura; Marino,Leonardo Biancolino; Hirata,Mario Hiroyuki; Cardoso,Rosilene Fressati; Melo,Fernando Augusto Fiúza de; Leite,Clarice Queico Fujimura.
We assessed the performance of REMA in comparison with BACTEC MGIT 960 in the susceptibility testing of 80 Mycobacterium tuberculosis clinical isolates from Clemente Ferreira Institute against four drugs. REMA proved to be a rapid and accurate method, providing excellent correlation with BACTEC MGIT 960, with the exception of results for the ethambutol drug.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mycobacterium tuberculosis; Tuberculosis; Drug susceptibility testing.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100041

Diagnosis of Helicobacter pylori infection by invasive and noninvasive tests
Provedor de dados: 58
Autores: Pourakbari,Babak; Ghazi,Mona; Mahmoudi,Shima; Mamishi,Setareh; Azhdarkosh,Hossein; Najafi,Mehri; Kazemi,Bahram; Salavati,Ali; Mirsalehian,Akbar.
Although several invasive and noninvasive tests have been developed for the diagnosis of Helicobacter pylori infection, all of the tests have their limitations. We conducted a study to investigate and compare the suitability of rapid urease test (RUT), serology, histopathology and stool antigen tests with polymerase chain reaction (PCR) for detection of H. pylori, and correlate the diagnostic methods with PCR. Eighty nine patients (61 adults, 28 children) referred to the Firoozgar Hospital and Children Medical Center Hospital for diagnostic upper gastrointestinal endoscopy entered to the study and noninvasive tests such as immunoassay for serological antibodies against H. pylori and detection of its antigen in feces were measured. The biopsies were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Helicobacter pylori; Diagnosis; Invasive and noninvasive tests.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300020

Submerged fermentation of Lactobacillus rhamnosus YS9 for γ-aminobutyric acid (GABA) production
Provedor de dados: 58
Autores: Lin,Qian.
γ-Aminobutyric acid (GABA) is a major inhibitory neurotransmitter in central nervous system, and its application in drugs and functional foods has attracted great attention. To enhance production of y-aminobutyric acid, Lactobacillus rhamnosus YS9, a strain isolated from Chinese traditional fermented food pickled vegetable, was grown under submerged fermentation. Its cultivation conditions were investigated. When culture pH condition was adjusted to the optimal pH of glutamate decarboxylase activity, culture of Lb. rhamnosus YS9 in medium supplemented with 200 mM of monosodium glutamate and 200 µM of pyridoxal phosphate (PLP), produced 187 mM of GABA.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lactobacillus rhamnosus; Γ-aminobutyric acid (GABA); Glutamate decarboxylase (GAD).
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100028

Characteristics of Saccharomyces cerevisiae yeasts exhibiting rough colonies and pseudohyphal morphology with respect to alcoholic fermentation
Provedor de dados: 58
Autores: Reis,Vanda Renata; Bassi,Ana Paula Guarnieri; Silva,Jessica Carolina Gomes da; Ceccato-Antonini,Sandra Regina.
Among the native yeasts found in alcoholic fermentation, rough colonies associated with pseudohyphal morphology belonging to the species Saccharomyces cerevisiae are very common and undesirable during the process. The aim of this work was to perform morphological and physiological characterisations of S. cerevisiae strains that exhibited rough and smooth colonies in an attempt to identify alternatives that could contribute to the management of rough colony yeasts in alcoholic fermentation. Characterisation tests for invasiveness in Agar medium, killer activity, flocculation and fermentative capacity were performed on 22 strains (11 rough and 11 smooth colonies). The effects of acid treatment at different pH values on the growth of two strains ("52" -rough...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: S. cerevisiae; Ethanol; Fermentation; Indigenous yeasts.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400014

Phenotypic and genotypic characterization of lactic acid bacteria isolated from cow, ewe and goat dairy artisanal farmhouses
Provedor de dados: 58
Autores: Reginensi,Stella M.; González,Marcela J.; Bermúdez,Jorge.
Lactic acid bacteria collected from artisanal farmhouses were characterized using a polyphasic approach. Phenotypic methods including biochemical assays, ribosomal DNA restriction analysis and 16S rDNA sequence analysis were performed. This approach provides accuracy for identification, and helps to avoid the loss of natural biodiversity including potentially valuable strains.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Native lactic acid bacteria; Polyphasic identification; Artisanal dairy products.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200013

Viability of stressed Mycobacterium tuberculosis and association with multidrug resistance
Provedor de dados: 58
Autores: Martins,Maria Conceição; Giampaglia,Carmen Maria Saraiva; Chimara,Erica; Oliveira,Rosângela Siqueira; Vedovello,Danielle; Sakamoto,Sidnei Miyoshi; Ferrazoli,Lucilaine.
This study investigated biological characteristics of recovered stressed M. tuberculosis isolates that failed to grow in differential culture media for phenotypic identification and in culture media containing anti-tuberculosis drugs for drug-susceptibility testing, despite of having grown in primary culture. It represents an improvement in the diagnosis of MDR tuberculosis and tuberculosis control.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Mycobacterium; Multidrug resistance; Culture growth; Spoligotyping.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200019

Dynamics of the chemical composition and productivity of composts for the cultivation of Agaricus bisporus strains
Provedor de dados: 58
Autores: Andrade,Meire Cristina Nogueira de; Jesus,João Paulo Furlan de; Vieira,Fabrício Rocha; Viana,Sthefany Rodrigues Fernandes; Spoto,Marta Helena Fillet; Minhoni,Marli Teixeira de Almeida.
Two compost formulations based on oat straw (Avena sativa) and brachiaria (Brachiaria sp.) were tested for the cultivation of three Agaricus bisporus strains (ABI-07/06, ABI-05/03, and PB-1). The experimental design was a 2 x 3 factorial scheme (composts x strains) with 6 treatments and 8 repetitions (boxes containing 12 kg of compost). The chemical characterization of the compost (humidity, organic matter, carbon, nitrogen, pH, raw protein, ethereal extract, fibers, ash, cellulose, hemicellulose, and lignin) before and after the cultivation of A. bisporus and the production (basidiomata mass, productivity, and biological efficiency) were evaluated. Data were submitted to variance analysis, and averages were compared by means of the Tukey's test. According...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agaricus bisporus; Productivity; Strains; Compost; Nutritional value.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400016

Some factors affecting tannase production by Aspergillus niger Van Tieghem
Provedor de dados: 58
Autores: Aboubakr,Hamada A.; El-Sahn,Malak A.; El-Banna,Amr A.
One variable at a time procedure was used to evaluate the effect of qualitative variables on the production of tannase from Aspergillus niger Van Tieghem. These variables including: fermentation technique, agitation condition, tannins source, adding carbohydrates incorporation with tannic acid, nitrogen source type and divalent cations. Submerged fermentation under intermittent shaking gave the highest total tannase activity. Maximum extracellular tannase activity (305 units/ 50 mL) was attained in medium containing tannic acid as tannins source and sodium nitrate as nitrogen source at 30 ºC for 96 h. All added carbohydrates showed significant adverse effects on the production of tannase. All tested divalent cations significantly decreased tannase...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tannase; Aspergillus niger Van Tieghem; Factors affecting tannase production; Split plot design.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200036

Identification and antimicrobial susceptibility patterns of Pasteurella multocida isolated from chickens and japanese quails in Brazil
Provedor de dados: 58
Autores: Rigobelo,Everlon Cid; Blackall,Patrick Joseph; Maluta,Renato Pariz; Ávila,Fernando Antonio de.
A study was performed to verify the presence of Pasteurella multocida in eight different poultry groups of 90 birds each. Groups I to IV were chickens (I being &amp;gt; 6 weeks of age with a history of respiratory illness, II &amp;gt; 6 weeks of age and free of respiratory illness, III &lt; 6 weeks of age with respiratory illness and IV being &lt; 6 weeks of age and with no respiratory illness. Groups V to VIII had the matching characteristics of Groups I to V but consisted of Japanese Quails. The P. multocida isolation rate from the groups was as follows; Group I 56/90 (62.3%) Group II 18/90 (20.0%), Group III 12/90 (13.3%), Group IV 3/90 (3.33%), Group V 8/90 (8.88%), Group VI 2/90 (2.22%) Group VII 2/90 (2.22%) and Group VIII 1/90 (1.11%). These...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pasteurella multocida; Antimicrobial resistance; Chicken; Quails.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100023

Yearly variation of bacterial production in the Arraial do Cabo protection area (Cabo Frio upwelling region): an evidence of anthropogenic pressure
Provedor de dados: 58
Autores: Coelho-Souza,Sérgio A.; Pereira,Gilberto C.; Coutinho,Ricardo; Guimarães,Jean R.D.
Arraial do Cabo is where upwelling occurs more intensively on the Brazilian coast. Although it is a protection area it suffers anthropogenic pressure such as harbor activities and sporadic sewage emissions. Short-time studies showed a high variability of bacterial production (BP) in this region but none of them evaluated BP during long periods in a large spatial scale including stations under different natural (upwelling and cold fronts) and anthropogenic pressures. During 2006, we sampled surface waters 10 times (5 in upwelling and 5 in subsidence periods) in 8 stations and we measured BP, temperature as well as the concentrations of inorganic nutrients, pigments and particulate organic matter (POM). BP was up to 400 times higher when sewage emissions...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacterioplankton; Heterotrophic activity; Impacted area; Extractive reserve; Upwelling system.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400046

Chemicals and lemon essential oil effect on Alicyclobacillus acidoterrestris viability
Provedor de dados: 58
Autores: Maldonado,Maria Cristina; Aban,Marina Paola; Navarro,Antonio Roberto.
Alicyclobacillus acidoterrestris is considered to be one of the important target microorganisms in the quality control of acidic canned foods. There is an urgent need to develop a suitable method for inhibiting or controlling the germination and outgrowth of A.acidoterrestris in acidic drinks. The aim of this work was to evaluate the chemicals used in the lemon industry (sodium benzoate, potassium sorbate), and lemon essential oil as a natural compound, against a strain of A.acidoterrestris in MEB medium and in lemon juice concentrate. The results pointed out that sodium benzoate (500-1000-2000 ppm) and lemon essential oil (0.08- 0.12- 0.16%) completely inhibited the germination of A. acidoterrestris spores in MEB medium and LJC for 11 days. Potassium...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sodium benzoate; Potassium sorbate; Essential oils; Alicyclobacillus acidoterrestris.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400015

Evaluation of two recommended disinfection methods for cleaning cloths used in food services of southern Brazil
Provedor de dados: 58
Autores: Bartz,Sabrina; Tondo,Eduardo Cesar.
In the State of Rio Grande do Sul (RS), Southern Brazil, a good manufacturing practices regulation was published recommending two disinfection methods for cleaning cloths used in food services. The aim of the present study was to evaluate the efficacy of those methods. Cleaning cloths were sampled without prior notice at food services, on common working days. For the analyses, the cloths were divided in two sub-samples, being one of them microbiologically analyzed. The second sub-sample was further divided in two pieces and submitted to hand washing for two minutes. After that, one piece was boiled in water for 15 min and the other one was soaked in a 200 ppm sodium hypochlorite solution for 15 min. Both pieces of cloth were submitted to microbiological...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cleaning cloths; Disinfection; The State of Rio Grande do Sul; Brazilian food services.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300015

Bioconversion of R-(+)-limonene to perillic acid by the yeast Yarrowia lipolytica
Provedor de dados: 58
Autores: Ferrara,Maria Antonieta; Almeida,Débora S.; Siani,Antonio C.; Lucchetti,Leonardo; Lacerda,Paulo S.B.; Freitas,André; Tappin,Marcelo R.R.; Bon,Elba P.S.
Perillyl derivatives are increasingly important due to their flavouring and antimicrobial properties as well as their potential as anticancer agents. These terpenoid species, which are present in limited amounts in plants, may be obtained via bioconversion of selected monoterpene hydrocarbons. In this study, seventeen yeast strains were screened for their ability to oxidize the exocyclic methyl group in the p-menthene moiety of limonene into perillic acid. Of the yeast tested, the highest efficiency was observed for Yarrowia lipolytica ATCC 18942. The conversion of R (+)-limonene by Y. lipolytica was evaluated by varying the pH (3 to 8) and the temperature (25 to 30 ºC) in a reaction medium containing 0.5% v/v limonene and 10 gµL of stationary phase cells...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Yarrowia lipolytica; Bioconversion; Limonene; Perillic acid.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400008

Candida albicans morphologies revealed by scanning electron microscopy analysis
Provedor de dados: 58
Autores: Staniszewska,M.; Bondaryk,M.; Swoboda-Kopec,E.; Siennicka,K.; Sygitowicz,G.; Kurzatkowski,W.
Scanning electron microscope (SEM) observations were used to analyze particular morphologies of Candida albicans clinical isolate (strain 82) and mutants defective in hyphae-promoting genes EFG1 (strain HLC52) and/ or CPH1 (strains HLC54 and Can16). Transcription factors Efg1 and Cph1 play role in regulating filamentation and adhesion of C. albicans' morphologies. Comparative analysis of such mutants and clinical isolate showed that Efg1 is required for human serum-induced cell growth and morphological switching. In the study, distinct differences between ultrastructural patterns of clinical strain's and null mutants' morphologies were observed (spherical vs tube-like blastoconidia, or solid and fragile constricted septa vs only the latter observed in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Candida albicans; Pleomorphism; Ultrastructure; Virulence.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300023

Mycobacterium tuberculosis belonging to family LAM and sublineage RD Rio: common strains in Southern Brazil for over 10 years
Provedor de dados: 58
Autores: Soares,Renata Oliveira; Macedo,Maíra Bidart de; von Groll,Andrea; Silva,Pedro Eduardo Almeida da.
A sublineage of Mycobacterium tuberculosis called RD Rio was described in 2007. Although only recently described, this strain may have been present previously in the population, and its identification in clinical isolates will elucidate bacterial transmission dynamics and host-pathogen interactions. This study evaluated the clonal diversity of the RD Rio sublineage in clinical isolates from Rio Grande-RS obtained between 1998 and 2001. Among the 45 samples analyzed by the MIRU-VNTR method, there were six clusters with two samples each and 33 orphan strains with unique pattern. The strains were distributed across several different lineages including LAM (34.04%), X (14.89%), Haarlem (12.77%), UgandaI (10.64%), S (4.26%), NEW-1 (2.13%) and Cameroon (2.13%);...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mycobacterium tuberculosis; MIRU-VNTR; RDRio.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400032

Identification and assessment of kefir yeast potential for sugar/ethanol-resistance
Provedor de dados: 58
Autores: Miguel,M.G.C.P.; Cardoso,P.G.; Magalhães-Guedes,K.T.; Schwan,R.F.
Biochemical and molecular analysis was used for identification of different kefir yeasts species from Brazil, Canada and the United States of America. The sugar/ethanol-resistant activity of the yeasts was evaluated. Saccharomyces cerevisiae and Kluyveromyces marxianus had the highest growth rates, suggesting biotechnological applications possible for these strains.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Kefir; Sugar/ethanol-resistant yeasts; Yeasts diversity; Rep-PCR; PCR-DGGE.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100016

Histopathological and molecular characterization of encephalitic listeriosis in small ruminants from northern Paraná, Brazil
Provedor de dados: 58
Autores: Headley,Selwyn Arlington; Bodnar,Lívia; Fritzen,Juliana T.T.; Bronkhorst,Dalton Evert; Alfieri,Alice Fernandes; Okano,Werner; Alfieri,Amauri Alcindo.
Listeriosis is a disease primarily of ruminants caused by the Gram-positive bacterium Listeria monocytogenes. Ruminants either demonstrate manifestations of the encephalitic, septicemic, or reproductive form of listeriosis. The pathological and molecular findings with encephalitic listeriosis in a 5.5-month-old, male, mixed-breed goat and a 3-year-old Texel-crossed sheep from northern Paraná, Brazil are described. Clinically, the kid demonstrated circling, lateral protrusion of the tongue, head tilt, and convulsions; the ewe presented ataxia, motor incoordination, and lateral decumbency. Brainstem dysfunctions were diagnosed clinically and listeriosis was suspected. Necropsy performed on both animals did not reveal remarkable gross lesions; significant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brainstem dysfunctions; Rhombencephalitis; Neuropathology; Listeriolysin gene; Epidemiology; Listeria monocytogenes.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300036

Prevalence of Group B Streptococcus serotypes III and V in pregnant women of Rio de Janeiro, Brazil
Provedor de dados: 58
Autores: Soares,Georgia Cristina Tavolaro; Alviano,Daniela Sales; Santos,Gabriela da Silva; Alviano,Celuta Sales; Mattos-Guaraldi,Ana Luiza; Nagao,Prescilla Emy.
GBS serotypes III and V were the most prevalent in pregnant women and exhibited resistance to tetracycline, clindamycin and sulfamethoxazole/trimethoprim. Serotype III showed high sialic acid content and PFGE analysis discerned 33 heterogeneous profiles. Phenotypic and genotypic characterization could be relevant to control GBS infections unaffected by intra-partum chemoprophylaxis.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Group B Streptococcus; Antimicrobial susceptibility; Sialic acid; PFGE.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300032

Statistical investigation of Kluyveromyces lactis cells permeabilization with ethanol by response surface methodology
Provedor de dados: 58
Autores: Faria,Janaína T. de; Rocha,Pollyana F.; Converti,Attilio; Passos,Flávia M.L.; Minim,Luis A.; Sampaio,Fábio C.
The aim of our study was to select the optimal operating conditions to permeabilize Kluyveromyces lactis cells using ethanol as a solvent as an alternative to cell disruption and extraction. Cell permeabilization was carried out by a non-mechanical method consisting of chemical treatment with ethanol, and the results were expressed as β-galactosidase activity. Experiments were conducted under different conditions of ethanol concentration, treatment time and temperature according to a central composite rotatable design (CCRD), and the collected results were then worked out by response surface methodology (RSM). Cell permeabilization was improved by an increase in ethanol concentration and simultaneous decreases in the incubation temperature and treatment...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Yeast; Cheese whey; Permeabilization; Ethanol; Β-galactosidase.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400007

Stability-indicating RP-HPLC method for simultaneous estimation of levosalbutamol sulfate and theophylline in combined dosage form
Provedor de dados: 60
Autores: Panda,Sagar Suman; Kumar,Bera Venkata Varaha Ravi; Mohanta,Ganeswar.
A novel, simple, accurate and precise RP-HPLC method for simultaneous determination of levosalbutamol sulfate and theophylline has been developed and validated. Separation was achieved on a Phenomenex; C18 column (250 mm × 4.6 mm i.d., 5 µm) using methanol: 10 mM TBAHS(tetrabutyl ammonium hydrogen sulfate) (50:50, v/v) as mobile phase at flow rate of 1.0 mL.min-1. The UV detection wavelength was 274 nm. The linearity is obeyed over a concentration range of 0.5-150 µg.mL-1 with correlation coefficient of 0.999 for both the drugs. The proposed method was validated by determining accuracy, precision, stability and system suitability parameters. The method was found to be robust. Specificity of the method was determined by subjecting the drugs to various...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Levosalbutamol/determination; Theophylline/determination; Stability-indicating; RP-High performance liquid chromatography/qualitative analysis Syrup; RP-High performance liquid chromatography/qualitative analysis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000300009

Scientific production in pharmaceutical care: comparison between Brazil, USA and Spain
Provedor de dados: 60
Autores: Andrade,Tadeu Uggere de; Barbosa,Jaqueliny Louback da Cunha; Laignier,Lívia Lopes Moura; Mata,Elizangela Faustino da; Cassaro,Karla Oliveira dos Santos; Lenz,Dominik; Sampaio,Karla Nivea; Boëchat,Giovanna Assis Pereira; Endringer,Denise Coutinho.
The aim of this study was to estimate the evolution of the field of Pharmaceutical Care (PC) by measuring the quality and quantity of the scientific production on the topic of PC in Brazil compared to two pioneering countries in the field, the United States of America (USA) and Spain. The databases Web of Science, Scopus, Medline, Lilacs and SciELO were used as sources for the literature search. Pharmaceutical Care, or the appropriate translations, was used as the search term for the literature search, which was limited to articles published between 1990 and 2009. A score of quality (SQ) was calculated using variables such as impact factor and the frequency of the citations. We included 3265 articles published in 544 journals. We found that there was a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pharmaceutical care/scientific production; Brazil/pharmaceutical care; Brazil/scientific production; Spain/pharmaceutical care; Spain/scientific production; United States of America/pharmaceutical care; United States of America/scientific production.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000100005

2-Phenitidine derivatives as suitable inhibitors of butyrylcholinesterase
Provedor de dados: 60
Autores: Abbasi,Muhammad Athar; Aziz-ur-Rehman,; Qureshi,Muhammad Zahid; Khan,Farhan Mehmood; Khan,Khalid Mohmmed; Ashraf,Muhammad; Afzal,Iftikhar.
This manuscript reports the synthesis of a series of N-substituted derivatives of 2-phenitidine. First, the reaction of 2-phenitidine (1) with benzene sulfonyl chloride (2) yielded N-(2-ethoxyphenyl) benzenesulfonamide (3), which further on treatment with sodium hydride and alkyl halides (4a-g) furnished into new sulfonamides (5a-g). Second, the phenitidine reacted with benzoyl chloride (6) and acetyl chloride (8) to yield the reported N-benzoyl phenitidine (7) and N-acetyl phenitidine (9), respectively. These derivatives were characterized by infrared spectroscopy, ¹H-NMR, and EI-MS, and then screened against acetylcholinesterase, butylcholinesterase, and lipoxygenase enzyme, and were found to be potent inhibitors of butyrylcholinesterase alone.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2-Phenitidine/inhibitor activity; Sulfonamides; Acetamide; Benzamide; Butyrylcholinesterase.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000100014

Synthesis and characterization of a cysteine xyloglucan conjugate as mucoadhesive polymer
Provedor de dados: 60
Autores: Bhalekar,Mangesh; Sonawane,Savita; Shimpi,Shamkant.
The aim of this study was to improve the mucoadhesive potential of xyloglucan polymer by the covalent attachment of cysteine as thiol moiety. The parent polymer xyloglucan was chemically modified by introducing sulphydryl bearing compound L-cysteine HCl. Different batches of xyloglucan-cysteine conjugates were prepared at varying reaction pH (2-6) and evaluated for optimum thiol incorporation, disulphide group content, swelling behavior, rheological properties and mucoadhesive properties. The obtained conjugates characterized in vitro by quantification of immobilized thiol groups; showed maximum thiol incorporation on xyloglucan (7.67 ± 0.14 %) at pH 5. The disulphide group content was found maximum (2.83 ± 0.12) at pH 6. The water uptake at end of 4 h was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mucoadhesion; Thiomer; Xyloglucan; L-cysteine HCl.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000200010

Indexes vs. quality: considerations on how we analyze our publications and Science in Brazil
Provedor de dados: 60
Autores: Aranha,Leila Rangel de Carvalho.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000200001

Prevalence and costs of hospitalizations for poisoning and accidental intoxication in Brazilian elderly
Provedor de dados: 60
Autores: Abreu,Marcelle Silva de; Ferreira,Silvandro Diego de Albuquerque; Ferreira,Larissa Pelágia de Lima; Toneo Júnior,José Ferreira; Maciel,Wamberto Vieira; Maciel,Shirley Suely Soares Veras.
A cross-sectional study of secondary data/information obtained from the Hospital Information System (HIS) spanning the years 2008 - 2009 was performed. The distribution of the main hospital admissions by gender, age, color/race, region and federal unit of residence, average expenditure and average length of hospital stay, year of hospitalization and mortality rates (MR) were studied. The data collected were tabulated by TabNet and keyed into Microsoft Excel 2007. It was verified that elderly males (54.3%), from 60 to 69 years old (50.6%), nonwhites (36.3%) and residents of Southeast and North regions of the country had the highest rates of hospitalization. Seniors were hospitalized for an average of 4.8 days, and the major causes were exposure to alcohol...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hospital Information System; Elderly patients/hospitalization; Medicines/inappropriated use; Hospitalization/rates; Poisoning; Alcohol/use.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000400007

A review of analytical methods for the determination of four new phosphodiesterase type 5 inhibitors in biological samples and pharmaceutical preparations
Provedor de dados: 60
Autores: Codevilla,Cristiane Franco; Castilhos,Tamara dos Santos; Bergold,Ana Maria.
The introduction of oral phosphodiesterase type 5 inhibitor therapy in 1998 revolutionized the treatment of erectile dysfunction. Erectile dysfunction is the most common sexual problem in men. It often has a profound effect on intimate relationships and quality of life. The analysis of pharmaceuticals is an important part of the drug development process as well as for routine analysis and quality control of commercial formulations. Whereas the determination of sildenafil citrate, vardenafil and tadalafil are well documented by a variety of methods, there are few publications about the determination of udenafil, lodenafil carbonate, mirodenafil and avanafil. The paper presents a brief review of the action mechanism, adverse effects, pharmacokinetics and the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phosphodiesterase type 5 inhibitors/determination; Phosphodiesterase type 5 inhibitors/pharmaceutical preparations; Phosphodiesterase type 5 inhibitors/determination; Phosphodiesterase type 5 inhibitors/biological samples; Analytical methods; Erectile dysfunction.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000100002

Croton schiedeanus Schltd prevents experimental hypertension in rats induced by nitric oxide deficit
Provedor de dados: 60
Autores: Páez,María Teresa; Rodríguez,Diana Catalina; López,Daniel Fernando; Castañeda,Jorge Arturo; Buitrago,Diana Marcela; Cuca,Luis Enrique; Guerrero,Mario Francisco.
Croton schiedeanus Schltd (N.V.: "almizclillo") is a plant used in traditional medicine as an antihypertensive in Colombia. It contains flavonoid, diterpenoid and fenilbutanoid metabolites that have vasodilatation effects linked to the NO/cGMP pathway. This work aimed to assess the capacity of a 96% EtOH extract to prevent the hypertension induced by nitric oxide (NO) deficiency in rats. The NO synthase inhibitor L-NAME (10 mg/kg/d, i.p) was administered during five weeks to three groups of rats (6-7 animals): C. Schiedeanus (200 mg/kg/d, p.o), enalapril (reference, 10 mg/kg/d, p.o) and vehicle (control: olive oil 1 ml/kg/d, p.o). In addition, the blank group received only vehicle. The arterial blood pressure (BP) and heart rate (HR) were measured daily...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Croton schiedeanus/pharmacognosy; Almizelillo/use; Almizelillo/hypertension prevention; Nitric oxide/deficit; Hypertension/prevention; Plant extracts/vasodilatation effects; Medicinal plants.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000400027

Evaluation of the protective effects of tocotrienol-rich fraction from palm oil on the dentate gyrus following chronic restraint stress in rats
Provedor de dados: 60
Autores: Talip,Saiful Bhari; Asari,Mohd Asnizam; Khan,Aaijaz Ahmed; Sirajudeen,Kuttulebbai Nainamohamed Salam.
Exposure to chronic restraint stress has been shown to cause a number of morphological changes in the hippocampal formation of rats. Tocotrienol, an isoform of vitamin E, exhibits numerous health benefits, different from those of tocopherol. Recent studies have demonstrated that tocotrienol prevents stress-induced changes in the gastric mucosa, thus indicating that it may also protect other organs such as the brain from the damaging effects of stress. Therefore, the aim of the present study was to investigate the protective effect of tocotrienol-rich fraction (TRF) extracted from palm oil on the dentate gyrus of rats following exposure to chronic restraint stress. Thirty-six male Sprague Dawley rats were divided into four groups: control, stress,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tocotrienol; Tocotrienol rich fraction; Restraint stress; Dentate gyrus; Hippocampus.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000200020

In vivo hypotensive effect and in vitro inhibitory activity of some Cyperaceae species
Provedor de dados: 60
Autores: Martins,Monica Lacerda Lopes; Pacheco,Henrique Poltronieri; Perini,Iara Giuberti; Lenz,Dominik; Andrade,Tadeu Uggere de; Endringer,Denise Coutinho.
In 1820, French naturalist August Saint Hillaire, during a visit in Espírito Santo (ES), a state in southeastern Brazil, reported a popular use of Cyperaceae species as antidote to snake bites. The plant may even have a hypotensive effect, though it was never properly researched. The in vitro inhibitory of the angiotensin converting enzyme (ACE) activity of eigth ethanolic extracts of Cyperaceae was evaluated by colorimetric assay. Total phenolic and flavonoids were determined using colorimetric assay. The hypotensive effect of the active specie (Rhychonospora exaltata, ERE) and the in vivo ACE assay was measured in vivo using male Wistar Kyoto (ERE, 0.01-100mg/kg), with acetylcholine (ACh) as positive control (5 µg/kg, i.v.). The evaluation of ACE in vivo...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cyperaceae/species; Cyperaceae/pharmacognosy; Cyperaceae/species; Cyperaceae/in vitro inhibitory activity; Cyperaceae/species; Cyperaceae/in vivo hypotensive effect; Angiotensin converting enzyme/in vitro inhibitory; Flavonoids/determination.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000400020

High genetic diversity among Pseudomonas aeruginosa and Acinetobacter spp. isolated in a public hospital in Brazil
Provedor de dados: 60
Autores: Siqueira,Vera Lúcia Dias; Cardoso,Rosilene Fressatti; Pádua,Rubia Andreia Falleiros de; Caleffi-Ferracioli,Katiany Rizzieri; Helbel,Cesar; Santos,Adolfo Carlos Barreto; Aoki,Elisabeth Eyko; Nakamura,Celso Vataru.
In Brazil and other regions of the world, Pseudomonas aeruginosa and Acinetobacter spp. have emerged as important agents of nosocomial infection and are commonly involved in outbreaks. The main objective of the present study was to evaluate the genetic relationship among P. aeruginosa and Acinetobacter spp. isolated from patients in a public university hospital in northwestern Paraná, Brazil, and report their antimicrobial resistance profile. A total of 75 P. aeruginosa and 94 Acinetobacter spp. isolates were phenotypically identified and tested for antibiotic susceptibility using automated methodology. Polymyxin B was tested by disk diffusion for P. aeruginosa. Metallo-β-lactamase (MBL) was detected using a disk approximation test. Genotyping was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pseudomonas aeruginosa/antimicrobial resistance profile; Pseudomonas aeruginosa/genetic study; Acinetobacter spp./antimicrobial resistance profile; Acinetobacter spp./genetic study; Antimicrobial resistance; Bacterial typing.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000100006

Phenolic compounds and antioxidant, antimicrobial and antimycobacterial activities of Serjania erecta Radlk. (Sapindaceae)
Provedor de dados: 60
Autores: Cardoso,Claudia Andréa Lima; Coelho,Roberta Gomes; Honda,Neli Kika; Pott,Arnildo; Pavan,Fernando Rogério; Leite,Clarice Queico Fujimura.
Serjania erecta Radlk.(Sapindaceae) is a medicinal plant traditionally used in Brazil. We assayed the ethanolic extract of leaves and roots against seven microorganisms. The REMA (Resazurin Microtiter Assay) assay was used to measure the biological activity in vitro against Mycobacterium tuberculosis and our results showed moderate activity of the ethanolic extract. On the other hand S. aureus, P. aeruginosa, S. setubal, C. albicans, S. cerevisiae and E. coli revealed that the leaves and roots of S. erecta inhibited the growth of all microorganisms. The ethanolic extracts of leaves and roots showed low values of antioxidant activities. The ethanolic extracts of leaves and roots were analyzed by chromatographic and spectrometric methods. (-)-Epicatechin,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Serjania erecta Radlk/pharmacognosy; Serjania erecta Radlk/ethanolic extract; Serjania erecta Radlk/antioxidant activity; Serjania erecta Radlk/ethanolic extract; Serjania erecta Radlk/antimicrobial activity; Sapindaceae/pharmacognosy; Cipó-cinco-folhas/pharmacognosy; Flavonoids; Medicinal plants.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000400017

Use of the Ogawa-Kudoh method to isolate mycobacteria in a tuberculosis reference laboratory in northwestern Paraná, Brazil
Provedor de dados: 60
Autores: Silva,Fernanda Schaefer Borges da; Castilho,Aline Lemes; Maltempe,Flaviane Granero; Pina,Rosangela Zampieri; Takao,Elisa Keiko Hirayama; Siqueira,Vera Lúcia Dias; Cardoso,Rosilene Fressatti; Caleffi-Ferracioli,Katiany Rizzieri.
Culturing is the gold standard method for confirming a diagnosis of tuberculosis (TB). The Brazilian Ministry of Health recently proposed the use of the Ogawa-Kudoh method for sputa cultures to detect Mycobacterium tuberculosis. The aim of the present study was to evaluate 8 years of using the Ogawa-Kudoh method in a TB reference laboratory in northwestern Paraná, Brazil. The present study consisted of a retrospective analysis of sputa cultures records for the detection of mycobacteria using the Ogawa-Kudoh method in the Laboratory of Medical Bacteriology, Laboratory of Teaching and Research in Clinical Analysis (LEPAC), State University of Maringá, from July 2003 to September 2011. The following variables were analyzed: Ziehl Neelsen (Z-N) smears and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mycobacterium tuberculosis/detection; Ogawa-Kudoh method/evaluation; Tuberculosis/diagnosis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000300018

A fully validated microbiological assay to evaluate the potency of ceftriaxone sodium
Provedor de dados: 60
Autores: Manfio,Maria Luisa; Agarrayua,Danielle Araújo; Machado,Jaison Carlosso; Schmidt,Cleber Alberto.
Ceftriaxone (CFTX) sodium is a third-generation, broad-spectrum cephalosporin that is resistant to beta-lactamases. An alternative bioassay for the assessment of the potency of this drug in pharmaceutical formulations has not been previously reported. Thus, this paper reports the development and full validation of a 3 x 3 agar diffusion bioassay using a cylinder-plate method to quantify CFTX sodium in pharmaceutical samples. The strain Staphylococcus aureus ATCC 6538P was used as the test microorganism, and the results of the proposed bioassay displayed high linearity, precision, accuracy, specificity and robustness. All potency results were statistically analyzed using an analysis of variance (ANOVA) and were found to be linear (r=0.99999) in the range of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ceftriaxone/agar diffusion assay; Ceftriaxone/quality control; Ceftriaxone/microbiological assay; Drugs/quality control.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000400015

XII National Meeting of Pharmaceutical Chemistry Professors: could we have now a subarea of Pharmaceutical and Medicinal Chemistry in the CNPq Pharmacy Comittee?
Provedor de dados: 60
Autores: Ferreira,Elizabeth Igne; Barreiro,Eliezer L.; Andrade,Carolina Horta.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000100001

Study of thermal behavior of phytic acid
Provedor de dados: 60
Autores: Daneluti,André Luis Máximo; Matos,Jivaldo do Rosário.
Phytic acid is a natural compound widely used as depigmenting agent in galenic cosmetic emulsions. However, we have observed experimentally that phytic acid, when heated to 150 ºC for around one hour, shows evidence of thermal decomposition. Few studies investigating this substance alone with regard to its stability are available in the literature. This fact prompted the present study to characterize this species and its thermal behavior using thermal analysis (TG/DTG and DSC) and to associate the results of these techniques with those obtained by elemental analysis (EA) and absorption spectroscopy in the infrared region. The TG/DTG and DSC curves allowed evaluation of the thermal behavior of the sample of phytic acid and enabled use of the non-isothermal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Thermal analysis; Phytic acid/thermal behavior; Emulsion/stability; IR/dehydration; EA/thermal decomposition.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000200009

Development, characterization and antioxidant activity of polysorbate based O/W emulsion containing polyphenols derived from Hippophae rhamnoides and Cassia fistula
Provedor de dados: 60
Autores: Khan,Barkat Ali; Akhtar,Naveed; Khan,Haroon; Braga,Valdir de Andrade.
The objective of this study was to develop a pharmaceutical O/W emulsion containing plant-derived polyphenol extracts and evaluate its stability and antioxidant activity. O/W emulsions were prepared using ionic surfactant polysorbate 80 (Tween 80®). The odorwas adjusted with few drops of blue sea fragrance. DPPH (1,1-diphenyl-2-picrylhydrazyl) assay was used to evaluate the antioxidant activity of the plant extracts alone and emulsions containing these extracts. Physical stability was assessed by submitting the emulsions to storage at 8 ºC, 25 ºC, 40 ºC and 40 ºC + 70% RH (relative humidity) for two months. Various physical characteristics of emulsions monitored, include color, creaming, liquefaction, centrifugation and pH. Brookfield rotational rheometer...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hippophae rhamnoids/pharmacognosy; Cassia fistula/pharmacognosy; Emulsion O/W; Emulsion O/topical use; Emulsion O/W; Emulsion O/conductivity; Emulsion O/W; Emulsion O/rheology.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000400016

Production and characterization of alginate-starch-chitosan microparticles containing stigmasterol through the external ionic gelation technique
Provedor de dados: 60
Autores: Fujiwara,Gislene Mari; Campos,Ranieri; Costa,Camila Klocker; Dias,Josiane de Fátima Gaspari; Miguel,Obdulio Gomes; Miguel,Marilis Dallarmi; Marques,Francisco de Assis; Zanin,Sandra Maria Warumby.
Stigmasterol - a plant sterol with several pharmacological activities - is susceptible to oxidation when exposed to air, a process enhanced by heat and humidity. In this context, microencapsulation is a way of preventing oxidation, allowing stigmasterol to be incorporated into various pharmaceutical forms while increasing its absorption. Microparticles were obtained using a blend of polymers of sodium alginate, starch and chitosan as the coating material through a one-stage process using the external gelation technique. Resultant microparticles were spherical, averaging 1.4 mm in size. Encapsulation efficiency was 90.42% and method yield 94.87%. The amount of stigmasterol in the oil recovered from microparticles was 9.97 mg/g. This technique proved...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Stigmasterol/microencapsulation; Microencapsulation; Sodium alginate/drugs coating; Chitosan/drugs coating; Starch/drugs coating; Natural polymers/drugs coating.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000300015

Glycodendrimers: versatile tools for nanotechnology
Provedor de dados: 60
Autores: Roy,René; Shiao,Tze Chieh; Rittenhouse-Olson,Kate.
Combining nanotechnology with glycobiology has triggered an exponential growth of research activities in the design of novel functional bionanomaterials (glyconanotechnology). More specifically, recent synthetic advances towards the tailored and versatile design of glycosylated nanoparticles namely glyconanoparticles, considered as synthetic mimetics of natural glycoconjugates, paved the way toward diverse biomedical applications. The accessibility of a wide variety of these structured nanosystems, in terms of shapes, sizes, and organized around stable nanoparticles have readily contributed to their development and applications in nanomedicine. In this context, glycosylated gold-nanoparticles (GNPs), glycosylated quantum dots (QDs), fullerenes, single-wall...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dendrimer; Glycodendrimer; Vaccine; Bacteria; Nanoparticles; E. coli; Lanthanides.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000700008

Anti-inflammatory and antinociceptive activities of methanolic extract from red seaweed Dichotomaria obtusata
Provedor de dados: 60
Autores: García Delgado,Neivys; Frías Vázquez,Ana Iris; Cabrera Sánchez,Hiran; Soto del Valle,Roberto Menéndez; Sierra Gómez,Yusvel; Suárez Alfonso,Ana María.
The aim of the present work was to investigate the anti-inflammatory and antinociceptive effects of methanolic extract from D. obtusata using classic models in mice (croton oil-induced ear edema and acetic acid-induced writhing) and a phospholipase A2 activity test. Qualitative analysis of the chemical composition of seaweed was also determined by extraction with solvents of increasing polarity and precipitation and color tests. Results of qualitative chemical study showed the presence of lactonic and phenolic compounds, reduced carbohydrates, other sugars, flavonoids, fatty compounds, triterpenes and steroids. The extract inhibited mouse ear edema in a dose-dependent manner with an efficacy higher than 90% and a mean effective dose of 4.87µg/ear, while...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dichotomaria obtusata/pharmacognosy; Dichotomaria obtusata/anti-inflammatory activity; Dichotomaria obtusata/antinociceptive activity; Mouse ear edema test; Writhing test.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000100008

A validated stability indicating HPLC method for the determination of process-related impurities in pantoprazole bulk drug and formulations
Provedor de dados: 60
Autores: Pandey,Saurabh; Pandey,Preeti; Mishra,Durgesh; Singh,Umesh Kumar.
A stability-indicating high-performance liquid chromatographic (HPLC) method was developed with short run time and validated for the assay of process related impurities of pantoprazole in bulk form. Resolution of drug, its potential impurities and degradation products were achieved on a Hypersil ODS column utilizing a gradient with 0.01 M phosphate buffer of pH 7 and acetonitrile as eluent, at the detection wavelength of 290 nm. Flow rate was set at 1 mL min-1. The procedure was found to be specific, linear (r=0.999), recovery (97.9-103%), LOD (0.043-0.047 µgmL-1), LOQ (0.13-0.14 µgmL-1) and robust. Acceptable robustness indicates that the assay method remains unaffected by small but deliberate variations. Pantoprazole was found to degrade in acidic,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: High performance liquid chromatography/qualitative analysis; High performance liquid chromatography/method development; Pantoprazole/forced degradation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000100019

Hepatitis C in prisoners and non-prisoners in Colatina, Espírito Santo, Brazil
Provedor de dados: 60
Autores: Falquetto,Tânia Cristina; Endringer,Denise Coutinho; Andrade,Tadeu Uggere de; Lenz,Dominik.
The aim of the present work was to compare hepatitis C prevalence, genotypes, and risk factors between prisoners and non-prisoners in the city of Colatina, Espírito Santo, Brazil. This cross-sectional study involved approximately 1,600 residents and 730 prisoners, all of whom were living in Colatina. The percentage of individuals who tested positive for anti-HCV was 0.1% (2/1,600) in the non-prisoner group and 1.0% (7/730) in the prisoner group, confirming a higher risk of hepatitis C in the latter group. The percentage of subjects who progressed to HCV-RNA negative was 11.1% (1/9), confirming the high probability of evolution to chronicity. Genotype 1 was the most predominant genotype found. Factors associated with increased risk of hepatitis C were being...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hepatitis C/prevalence; Hepatitis C/genotypes; Hepatitis C/risk factors; Hepatitis C/symptoms; Anti-HCV; Prison population/risks evaluation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000400013

Consumption of medicines in high-risk pregnancy: evaluation of determinants related to the use of prescription drugs and self-medication
Provedor de dados: 60
Autores: Araújo,Danielle Dayse; Leal,Marineide Marinho; Santos,Eliane Jucielly Vasconcelos; Leal,Leila Bastos.
The use of drugs during pregnancy still represents a challenge for medicine, since the majority of drugs cross the placental barrier with a potential to cause several congenital problems to the fetus, and most of them have not been clinically tested in pregnant patients. At the same time, the medicalization phenomenon, self-medication, and lack of patient information about the misuse of medicines are additional problems. Thus, the aim of this study was to evaluate the pattern of medicine consumption in high-risk pregnancies and the determinants related to this consumption pattern. In order to do so, a cross-sectional descriptive study was performed with puerperal women who had a history of high-risk pregnancy. Statistically significant associations were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Medicines/adverse effects; Pregnancy/medicines use; Self-medication; Health education.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000300010

In vitro antimicrobial activity of total extracts of the leaves of Petiveria alliacea L. (Anamu)
Provedor de dados: 60
Autores: Ochoa Pacheco,Ania; Marín Morán,Jorge; González Giro,Zenia; Hidalgo Rodríguez,Adrian; Mujawimana,Rachel Juliet; Tamayo González,Karel; Sariego Frómeta,Sandra.
The antimicrobial activity of 13 total extracts was evaluated, 10 soft extracts (B) and 3 blended extracts (E) prepared from dry and fresh leaves of Petiveria alliacea L. Various solvents were used for their preparation: hydroalcoholic solution at 30%, 80% and isopropyl alcohol. The antimicrobial effect of the extracts was tested by means of the method of Kirby-Bauer, using four bacterial strains from the ATCC collection (Escherichia coli, Staphylococcus aureus, Enterococcus faecalis and Pseudomonas aeruginosa) and a leveduriform fungus (Candida albicans). The following quality control parameters were determined for most active extracts: physical, physical-chemical and chemical parameters. The results were: nine extracts showed antibacterial activity,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antimicrobial activity; Anamu; Soft extracts; Blended extracts; Minimum Inhibitory Concentration.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000200006

RP-HPLC method development and validation for estimation of rivaroxaban in pharmaceutical dosage forms
Provedor de dados: 60
Autores: Çelebier,Mustafa; Reçber,Tuba; Koçak,Engin; Altinöz,Sacide.
Rivaroxaban, an anti-clotting medication, acts at a crucial point in the blood-clotting process and stops the formation of blood clots. In this study, RP-HPLC method was developed for the determination of rivaroxaban in tablets (Xarelto® (10 mg)). Phenomenex Luna 5 µm C18 100 Å LC Column (250 x 4.6 mm) was used at 40 ºC. Isocratic elution was performed with ACN:Water (55:45 v/v) mixture. The flow rate was 1.2 mL min-1 and UV detection was at 249 nm. Internal standard (Caffeine) and rivaroxaban were eluted within 2.21 and 3.37 minutes, respectively. The developed method was validated according to the ICH guidelines and found to be linear within the range 0.005 - 40.0 µg mL-1. The method was accurate, precise, robust and rapid. Thus, it was applied...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: HPLC; Rivaroxaban; Validation; System suitability; Stability-indicating; Pharmaceutical dosage form.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000200018

Exendin-4 effects on islet volume and number in mouse pancreas
Provedor de dados: 60
Autores: Khorsandi,Layasadat; Nejad-Dehbashi,Fereshteh.
The aim of this study was to evaluate Exendin-4 (EX-4) effects on islet volume and number in the mouse pancreas. Thirty-two healthy adult male NMRI mice were randomly divided into control and experimental groups. EX-4 was injected intraperitoneally (i. p.) at doses of 0.25 (E1 group), 0.5 (E2 group), and 1 µg/kg (E3 group), twice a day for 7 consecutive days. One day after the final injection, the mice were sacrificed, and the pancreas from each animal dissected out, weighed, and fixed in 10% formalin for measurement of pancreas and islet volume, and determination of islet number by stereological assessments. There was a significant increase in the weight of pancreases in the E3 group. Islet and pancreas volumes in E1 and E2 groups were unchanged compared...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Exendin-4/effects; Exendin-4/experimental study; Pancreas/effects fo Exendin-4; Islet/hypertrophy; Stereology.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000400014

Pharmaceutical Care for hypertensive patients provided within the Family Health Strategy in Goiânia, Goiás, Brazil
Provedor de dados: 60
Autores: Martins,Bárbara Posse Reis; Aquino,Aline Teixeira de; Provin,Mércia Pandolfo; Lima,Dione Marçal; Dewulf,Nathalie de Lourdes Souza; Amaral,Rita Goreti.
The aim of Pharmaceutical Care programs is to improve patients' quality of life, and such programs are particularly effective in the case of chronic diseases such as hypertension. The objective of this longitudinal study was to analyze a Pharmaceutical Care model for hypertensive patients receiving care within the Family Health Strategy (FHS). All patients were being seen by an FHS team affiliated to a primary healthcare unit in Goiânia, Goiás, Brazil. Fourteen patients participated in the study, with each patient receiving six home visits during the Pharmaceutical Care. Overall, 142 drug-related problems were reported, the most common concerning the ineffectiveness of treatment (33.8%). A total of 135 pharmaceutical interventions were performed, 92.6% of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pharmaceutical care; Hypertension; Primary health care.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000300023

Rational use of medicines: prescribing indicators at different levels of health care
Provedor de dados: 60
Autores: Ferreira,Maria Beatriz Cardoso; Heineck,Isabela; Flores,Liziane Maahs; Camargo,Aline Lins; Dal Pizzol,Tatiane da Silva; Torres,Iraci Lucena da Silva; Koenig,Alvaro; Trevisol,Daisson José; Melo,Adriana Mary Mestriner Felipe de; Cardoso,Teófilo Fernando Mazon; Monreal,Maria Tereza Ferreira Duenhas; Kadri,Mônica Cristina Toffoli.
This multicenter study aimed to investigate prescribing patterns of drugs at different levels of health care delivery in university-affiliated outpatient clinics located in eight cities in the South and Midwest of Brazil. All prescriptions collected were analyzed for various items, including WHO prescribing indicators. A total of 2,411 prescriptions were analyzed, and 469 drugs were identified. The number of drugs prescribed per encounter, the frequency of polypharmacy, and the percentage of encounters with at least one injection or antibiotic prescribed were higher in centers providing primary health care services, compared to those where this type of care is not provided. Most drugs (86.1%) were prescribed by generic name. In centers with primary health...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Medicines/rational use; Medicines/prescription; Health Care/quality indicators; Pharmacy/community services.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000200015

Formulation and evaluation of CFC free inhalers for beclomethasone dipropionate
Provedor de dados: 60
Autores: Talasila,Gopala Krishna Murthy; Mukkala,Bala Vishnu Priya; Vattikuri,Satyanarayana.
Beclomethasone dipropionate CFC free inhalation formulations were developed with a view to treat asthma prophylactically. Dry powder inhalers (DPI) for beclomethasone dipropionate were prepared with different grades of lactose monohydrate. The influence of carrier and overages on performance of DPI was studied. Metered dose inhalers (MDI) with HFA based propellants were formulated with various doses, overages and different concentrations of alcohol. Formulated DPI and MDI were evaluated for various official and unofficial quality control tests. The influence of over doses on valve delivery, effect of overages on emitted dose and influence of alcohol on spray pattern from MDI were studied. The better fine particle fraction and emitted dose were obtained...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Beclomethasone dipropionate Dry powder inhalers Metered dose inhalers; ; Emmited dose Fine particle fraction; Overages.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000200004

Production of intravenous human dengue immunoglobulin from Brazilian-blood donors
Provedor de dados: 60
Autores: Gouveia,Frederico Leite; Oliveira,Renata Mendes Batista de; Lucena,Antônio Edson de Souza; Cordeiro,Marli Tenório; Leite,Ana Cristina Lima.
Dengue represents an important health problem in Brazil and therefore there is a great need to develop a vaccine or treatment. The neutralization of the dengue virus by a specific antibody can potentially be applied to therapy. The present paper describes, for the first time, the preparation of Immunoglobulin specific for the dengue virus (anti-DENV IgG), collected from screened Brazilian blood-donations. Production was performed using the classic Cohn-Oncley process with minor modifications. The anti-DENV IgG was biochemically and biophysically characterized and fulfilled the requirements defined by the European Pharmacopoeia. The finished product was able to neutralize different virus serotypes (DENV-1, DENV-2, and DENV-3), while a commercial IgG...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Viral infections; Dengue/treatment; Dengue/virus; Dengue/neutralization; Immunoglobulins/preparation; Plasma fractionation; Virus neutralization.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000400022

Insulin analogues versus human insulin in type 1 diabetes: direct and indirect meta-analyses of efficacy and safety
Provedor de dados: 60
Autores: Sanches,Andréia Cristina Conegero; Correr,Cassyano Januário; Venson,Rafael; Gonçalves,Patrícia Rodrigues; Garcia,Mariana Martins; Piantavini,Mário Sérgio; Pontarolo,Roberto.
All patients with Diabetes Mellitus (DM) receive insulin therapy. In this study, we evaluated the efficacy, safety and tolerability of human insulin and insulin analogues. We performed a systematic review of the literature and a meta-analysis according to the Cochrane Collaboration methodology. In the absence of clinical studies comparing insulins, we performed a mixed treatment comparison to establish the differences between the active treatments. We included studies published from 1995 to 2010. HbA1c results, episodes of hypoglycemia and nocturnal hypoglycemia data were extracted and analyzed. Thirty-five randomized clinical trials were selected after examining the abstract and a full text review. These studies included 4,206 patients who received...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insulins/meta-analysis; Diabetes mellitus/type 1; Insulin/treatment efficacy; Insulin/safety use.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000300011

A qualitative study exploring perspectives towards rational use of medicines in Pakistan's Malaria Control Program (MCP)
Provedor de dados: 60
Autores: Malik,Madeeha; Hassali,Mohamed Azmi; Shafie,Asrul Akmal; Hussain,Azhar.
Malaria is one of the most important global public health problems threatening the health of the population owing to prevailing socio-economic conditions and epidemiological reasons in Pakistan. This qualitative study has focused on the perspectives held towards the rational use of medicine intervention among malaria control program officials. Eight semi-structured interviews with all officials working for the malaria control program in Islamabad were conducted. The interviews, which were audio-taped and transcribed verbatim, were evaluated by thematic content analysis and by all authors. All respondents agreed on successful implementation of the malaria control program in Pakistan for controlling malaria by improving diagnostic and treatment facilities...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Malaria; Malaria Control Program; Drug/rational use; Intervention; Pakistan.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000200014

Study of the correlation between blood cholinesterases activity, urinary dialkyl phosphates, and the frequency of micronucleated polychromatic erythrocytes in rats exposed to disulfoton
Provedor de dados: 60
Autores: Santos,Mariane Gonçalves; Vitor,Ricardo Vilela; Nakamura,Maurício Gustavo; Morelini,Luana de Souza; Ferreira,Rafaela Scalco; Paiva,Alexandre Giusti; Azevedo,Luciana; Marques,Vanessa Bergamin Boralli; Martins,Isarita; Figueiredo,Eduardo Costa.
Organophosphates (OPs) are widely used as pesticides, and its urinary metabolites as well as the blood cholinesterases (ChEs) activity have been reported as possible biomarkers for the assessment of this pesticide exposure. Moreover, the OPs can induce mutagenesis, and the bone marrow micronucleus test is an efficient way to assess this chromosomal damage. This paper reports a study carried out to verify the correlation among the disulfoton exposure, blood ChEs activity, urinary diethyl thiophosphate (DETP), and diethyl dithiophosphate (DEDTP), as well as micronucleated polychromatic erythrocytes (MNPCEs) frequency. Four groups of rats (n=12) were exposed to disulfoton at 0, 2.8, 4.7, and 6.6 mg kg-1 body weight. The blood ChEs activity, urinary DETP and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pesticides/exposure study; Organophosphate/exposure study; Disulfoton/exposure; Dialkyl phosphate/urinary excretion; Blood cholinesterase; Micronucleated polychromatic erythrocytes/frequency.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000100016

Determination of metals in medicinal plants highly consumed in Brazil
Provedor de dados: 60
Autores: Leal,Alexandre Soares; Prado,Guilherme; Gomes,Tatiana Cristina Bomfim; Sepe,Fernanda Peixoto; Dalmázio,Ilza.
In this work, samples of the medicinal plants: Boldo (Peumus boldus), Castanha da Índia (Aesculus hippocastanum), Chá Verde (Camelia sinensis), Erva Cidreira (Melissa officinalis), Espinheira Santa (Maytenus ilicifolia), Guaraná (Paullinia cupana), Maracujá (Passiflora sp.), Mulungu (Erythrina velutina), Sene (Cassia angustifolia) and Valeriana (Valeriana officinalis) were evaluated BY using the Neutron Activation Analysis technique (NAA- k0) in order to determine the levels of metals and other chemical contaminants. The results showed the presence of non essential elements to the human body. The diversity of chemical impurities found even at low concentration levels, considering the potential for chronic toxicity of these elements, reinforces the need to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Neutron activation analysis; Medicinal plants; Metals/determination in medicinal plants; Chemical contaminants; Plant products/quality control.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000300022

Development and validation of an HPLC method for the simultaneous determination of artesunate and mefloquine hydrochloride in fixed-dose combination tablets
Provedor de dados: 60
Autores: Nogueira,Fernando Henrique Andrade; Reis,Naialy Fernandes Araújo; Chellini,Paula Rocha; César,Isabela da Costa; Pianetti,Gerson Antônio.
The present study developed and validated an HPLC method for the simultaneous determination of artesunate (AS) and mefloquine hydrochloride (MQ) in fixed-dose combination tablets, according to ICH guidelines. The chromatographic separation was carried out on an XBridge C18 (250 x 4.6 mm i.d., 5 µm particle size, Waters) analytical column. The mobile phase included a 0.05 M monobasic potassium phosphate buffer (pH adjusted to 3.0 with phosphoric acid) and acetonitrile (50 + 50, v/v). The flow rate was 1.0 mL/min, and the run time was 13 minutes. A dual-wavelength approach was employed: AS detection was performed at 210 nm and MQ was detected at 283 nm, using a diode array detector. Stability of sample solutions was evaluated for 8 hours after preparation,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Artesunate/determination; Mefloquine hydrochloride/determination; High performance liquid chromatography/qualitative analysis; Fixed-dose combination tablets/qualitative analysis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000400024

Development and validation of a microbiological assay for determination of chlorhexidine digluconate in aqueous solution
Provedor de dados: 60
Autores: Fiorentino,Flávia Angélica Másquio; Corrêa,Marcos Antonio; Salgado,Hérida Regina Nunes.
Chlorhexidine (CHX) is a broad-spectrum antiseptic that is used in many topical pharmaceutical formulations. Because there is no official microbiological assay reported in the literature that is used to quantify CHX, this paper reports the development and validation of a simple, sensitive, accurate and reproducible agar diffusion method for the dosage of chlorhexidine digluconate (CHX-D) in an aqueous solution. The assay is based on the inhibitory effect of CHX-D upon the strain of Staphylococcus aureus ATCC 25923, which is used as the test microorganism. The design 3x3 parallel-line model was used. The results were treated statistically by analysis of variance (ANOVA), and they were excellent in terms of linearity (r = 0.9999), presenting a significant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agar diffusion; Antiseptic; Chlorhexidine; Microbiological assay; Quality control; Validation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000200017

Inorganic UV filters
Provedor de dados: 60
Autores: Manaia,Eloísa Berbel; Kaminski,Renata Cristina Kiatkoski; Corrêa,Marcos Antonio; Chiavacci,Leila Aparecida.
Nowadays, concern over skin cancer has been growing more and more, especially in tropical countries where the incidence of UVA/B radiation is higher. The correct use of sunscreen is the most efficient way to prevent the development of this disease. The ingredients of sunscreen can be organic and/or inorganic sun filters. Inorganic filters present some advantages over organic filters, such as photostability, non-irritability and broad spectrum protection. Nevertheless, inorganic filters have a whitening effect in sunscreen formulations owing to the high refractive index, decreasing their esthetic appeal. Many techniques have been developed to overcome this problem and among them, the use of nanotechnology stands out. The estimated amount of nanomaterial in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Skin cancer; Sunscreen; Inorganic UV filter.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000200002

The effect of natural and organophilic palygorskite on skin wound healing in rats
Provedor de dados: 60
Autores: Silva,Mirna Luciano de Gois da; Fortes,Amanda Campos; Tomé,Adriana da Rocha; Silva Filho,Edson Cavalcanti da; Freitas,Rivelilson Mendes de; Soares-Sobrinho,José Lamartine; Leite,Cleide Maria da Silva; Soares,Mônica Felts de La Roca.
In view of growing interest in natural treatments, clays would appear to be a good alternative for speeding up the healing process during the treatment of wounds. Of the various clays, palygorskite, a clay from the Brazilian State of Piauí, composed of silicon and aluminum, has shown itself to be pharmaceutically useful as a healing agent. The aim of this article is to evaluate the effect on the healing of wounds of Piauí palygorskite, both in its natural state and when organophilic, by way of comparative analysis of macroscopic and histological tests on skin wounds in adult male and female two-month-old Wistar rats. To this end, a circular trichotomy of the dorsal cornus of the rats was carried out to confirm the effects of treatments involving 0.9%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Attapulgite/healing agent; Palygorskite/healing agent; Healing/experimental study; Skin wounds/healing; Skin wounds/experimental study.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000400012

Formulation and in vitro evaluation of fast dissolving tablets of metoprolol tartrate
Provedor de dados: 60
Autores: Satpute,Mangesh Machhindranath; Tour,Nagesh Shivaji.
The demand for fast dissolving tablets has been growing during the last decade, especially for elderly and children who have swallowing difficulties. In the present work, fast dissolving tablets of metoprolol tartrate, were prepared using sodium starch glycolate, sodium croscarmellose and crospovidone as superdisintegrants, by the direct compression method. The tablets prepared were evaluated for various parameters including weight variation, hardness, friability, in vitro dispersion time, drug-polymer interaction, drug content water absorption ratio, wetting time, in vitro drug release, FTIR and DSC studies. The tablets prepared by the direct compression method had a weight variation in the range of 145 mg to 152 mg, which is below ± 7.5%, a hardness of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fast dissolving tablets/in vitro evaluation; Fast dissolving tablets/formulation; Metoprolol tartrate/fast dissolving tablets; Metoprolol tartrate/formulation; Metoprolol tartrate/in vitro evaluation; Sodium croscarmellose; Sodium starch glycolate; Crospovidone; In vitro dispersion time/tablets evaluation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000400018

Evaluation of Cedrela gum as a binder and bioadhesive component in ibuprofen tablet formulations
Provedor de dados: 60
Autores: Odeniyi,Michael Ayodele; Babalola,Adepeju Oluwadamilare; Ayorinde,John Oluwasogo.
The compressional, mechanical and bioadhesive properties of tablet formulations incorporating a new gum obtained from the incised trunk of the Cedrela odorata tree were evaluated and compared with those containing hydroxypropylmethylcellulose (HPMC). Compressional properties were evaluated using Hausner's ratio, Carr's Index, the angle of repose, and Heckel, Kawakita and Gurnham plots. Ibuprofen tablets were prepared using the wet granulation method. Bioadhesive studies were carried out using the rotating cylinder method in either phosphate buffer pH 6.8 or 0.1 M hydrochloric acid media. The gum is a low viscosity polymer (48 cPs), and Fourier transform infrared spectroscopy revealed the presence of a hydroxyl group. Py and Pk values, which are measures of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cedrela gum/evaluation; Cedrela gum/compression properties; Cedrela gum/bioadhesive component; Tablet formulations; Hydroxypropylmethylcellulose; Ibuprofen tablets/bioadhesive studies; Bioadhesion.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000100011

A model for drug dispensing service based on the care process in the Brazilian health system
Provedor de dados: 60
Autores: Soares,Luciano; Diehl,Eliana Elisabeth; Leite,Silvana Nair; Farias,Mareni Rocha.
Access to medication emphasizes the availability of the product at the expense of providing a service. The goal of this paper is to propose a theoretical model for a drug dispensing service, beginning with a reflection on the current realities of the Unified Health System and drug dispensation in Brazil. A conceptual analytical research made by a methodological course called disciplined imagination was mainly the approach applied to develop the model. The drug dispensing service is part of the care process, which considers access as an attribute; reception, connection and accountability, management, and clinical pharmaceutical aspects as components; and the rational use of drugs as the purpose. The proposed model addresses access to the dispensing service...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Drugs/dispensing practice; Pharmaceutical service; Unified health system; Health services/access.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000100012

Pharmacoepidemiological profile and polypharmacy indicators in elderly outpatients
Provedor de dados: 60
Autores: Baldoni,André de Oliveira; Ayres,Lorena Rocha; Martinez,Edson Zangiacomi; Dewulf,Nathalie de Lourdes Sousa; Santos,Vânia dos; Obreli-Neto,Paulo Roque; Pereira,Leonardo Régis Leira.
This cross-sectional study was carried out with 1000 elderly outpatients assisted by a Basic Health District Unit (UBDS) from the Brazilian Public Health System (SUS) in the municipality of Ribeirão Preto. We analyzed the clinical, socioeconomic and pharmacoepidemiological profile of the elderly patients in order to identify factors associated with polypharmacy amongst this population. We used a truncated negative binomial model to examine the association of polypharmacy with the independent variables of the study. The software SAS was used for the statistical analysis and the significance level adopted was 0.05. The most prevalent drugs were those for the cardiovascular system (83.4%). There was a mean use of seven drugs per patient and 47.9% of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pharmacoepidemiology; Elderly/use of drugs; Polypharmacy; Drugs/rational use; Public Health System.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000300006

Simultaneous determination of ethinyl estradiol and drospirenone in oral contraceptive by high performance liquid chromatography
Provedor de dados: 60
Autores: Silva,Viviane Benevenuti; Galdos,Angel Arturo Gaona; Mothe,Cintia Maria Alves; Pallastrelli,Michele Bacchi; Prado,Maria Segunda Aurora; Singh,Anil Kumar; Kedor-Hackmann,Erika Rosa Maria; Santoro,Maria Inês Rocha Miritello.
A simple, rapid, economical and reliable high performance liquid chromatographic method has been developed and successfully applied in simultaneous determination of ethinyl estradiol and drospirenone in coated tablets. The HPLC method was performed on a LiChroCART® 100RP column (125x4 mm i.d., 5 µm) with acetonitrile:water 50:50 (v/v) as mobile phase, pumped at a flow rate of 1.0 mL.min-1. The fluorescence detection for ethinyl estradiol was made at λex= 280 nm and λem= 310 nm and a UV detection for drospirenone was made at 200 nm. The elution time for ethinyl estradiol and drospirenone were 4.0 and 5.7 min, respectively. The method was validated in accordance to USP 34 guidelines. The proposed HPLC method presented advantages over reported methods and is...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coated tablets/quantitative analysis; High performance liquid chromatography/quantitative analysis; Ethinyl estradiol/quantitative determination; Drospirenone/quantitative determination; Fluorescence detection; UV detection.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000300013

Simultaneous RP-HPLC determination of sparfloxacin and dexamethasone in pharmaceutical formulations
Provedor de dados: 60
Autores: Razzaq,Syed Naeem; Ashfaq,Muhammad; Mariam,Irfana; Khan,Islam Ullah; Razzaq,Syed Saleem.
The present study describes the development and subsequent validation of simple and accurate stability indicating RP-HPLC method for the determination of sparfloxacin and dexamethasone in pharmaceutical formulations in the presence of their stress-induced degradation products. Both the drugs and their stress-induced degradation products were separated within 10 minutes using C8 column and mixture of methanol and 0.02 M phosphate buffer pH 3.0 (60:40 v/v, respectively) as mobile phase at 270 nm using diode array detector. Regression analysis showed linearity in the range of 15-105 µg/mL for sparfloxacin and 5-35 µg/mL for dexamethasone. All the analytes were adequately resolved with acceptable tailing. Peak purity of the two drugs was also greater than...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: RP-HPLC; Sparfloxacin; Dexamethasone; Degradation products; Stability studies.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000200012

Punica granatum L. protects mice against hexavalent chromium-induced genotoxicity
Provedor de dados: 60
Autores: Ávila,Renato Ivan de; Guerra,Meirielle Teixeira; Borges,Kamilla de Almeida Souza; Vieira,Marcelo de Sousa; Oliveira Júnior,Luiz Marcos de; Furtado,Humberto; Mota,Mariana Flavia da; Arruda,Andréa Fernandes; Valadares,Marize Campos.
This study investigated the chemoprotective effects of Punica granatum L. (Punicaceae) fruits alcoholic extract (PGE) on mice exposed to hexavalent chromium [Cr(VI)]. Animals were pretreated with PGE (25, 50 or 75 mg/kg/day) for 10 days and subsequently exposed to a sub-lethal dose of Cr(VI) (30 mg/kg). The frequency of micronucleated polychromatic erythrocytes in the bone marrow was investigated and the Cr(VI) levels were measured in the kidneys, liver and plasm. For the survival analysis, mice were previously treated with PGE for 10 days and exposed to a single lethal dose of Cr(VI) (50 mg/kg). Exposure to a sub-lethal dose of Cr(VI) induced a significant increase in the frequency of micronucleated cells. However, the prophylactic treatment with PGE led...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chemoprevention; Hexavalent chromium/induced genotoxicity; Oxidative damage; Pomegranate/chemoprotective effects; Punica granatum/chemoprotective effects; Punica granatum/pharmacognosy; Punicaceae/chemoprotective effects; Punicaceae/pharmacognosy.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000400008

Potentially inappropriate medication use among institutionalized elderly individuals in southeastern Brazil
Provedor de dados: 60
Autores: Pinto,Mauro Cunha Xavier; Malaquias,Dalila Pinto; Ferré,Felipe; Pinheiro,Marcos Luciano Pimenta.
In recent decades, the elderly population in Brazil has grown rapidly, as has concern for the health of this population. Institutionalization in nursing homes has appeared as an alternative form of health care for frail elderly that live alone. The present study evaluated the pharmacotherapy and inappropriate drug prescriptions for institutionalized elderly patients living in long-term institutions in southeastern Brazil. This research was conducted at five institutions with a total sample of 151 individuals aged at least 60 years. Databases were used to identify drug interactions, defined daily dose and inappropriate prescriptions. The prevalence of drug intake among the elderly was 95.36%, and there were an average of 3.31 ± 1.80 drug prescriptions per...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pharmacoepidemiology; Drug interactions; Beers criteria; Elderly/inappropriate use of medicines; Medicines/inappropriate use.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000400010

QuEChERS-HPLC-DAD method for sulphonamides in chicken breast
Provedor de dados: 60
Autores: Machado,Simone Caetani; Landin-Silva,Mariane; Maia,Patrícia Penido; Rath,Susanne; Martins,Isarita.
The development of a QuEChERS-HPLC-DAD method using a Lichrospher 60 RP-Select B column (250 x 4.6 mm x 5 µm) at 40ºC, mobile phase constituted by phosphate buffer:acetonitrile (75:25, v/v) at a initial flow rate of 0.5 mL min-1, increased by 1.2 mL min-1 and at 265 nm is presented for simultaneous determination of sulphadiazine, sulphametoxipiridazine and sulphamethoxazole in chicken breast samples. QuEchERS is inexpensive, fast and easy, and the extraction of the analytes of the matrix was successfully employed. In addition, the method presented linearity, in the range of 25, 50, 100, 150, 175, and 200 µg kg-1, precision, selectivity and sensitivity. The intraday precision (RSD %) for QuEChERS method was between 3.6-10.8 (SDZ), 6.9-14.1 (SPZ) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: QuEChERS; Sulphonamides determination; Veterinary drugs residues; Chicken breast; HPLC-DAD.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000100017

Best herbs for managing diabetes: a review of clinical studies
Provedor de dados: 60
Autores: Ghorbani,Ahmad.
Diabetes mellitus is a public health problem which leads to serious complications over time. Experimentally, many herbs have been recommended for treating diabetes. In most cases, however, the recommendations are based on animal studies and limited pieces of evidence exist about their clinical usefulness. This review focused on the herbs, the hypoglycemic actions of which have been supported by three or more clinical studies. The search was done in Google Scholar, Medline and Science Direct databases using the key terms diabetes, plants, herbs, glucose and patients. According to the clinical studies, Aegle marmelos, Allium cepa, Gymnema sylvestre, Momordica charantia, Ocimum sanctum, Nigella sativa, Ocimum sanctum, Panax quinquefolius, Salacia reticulate,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Medicinal plants/diabetes treatment; Diabetes/treatment; Diabetes/clinical trials.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000300003

Pharmaceutical care in transplant patients in a university hospital: pharmaceutical interventions
Provedor de dados: 60
Autores: Martins,Bruna Cristina Cardoso; Souza,Thalita Rodrigues de; Luna,Ângela Maria Pita Tavares; Fonteles,Marta Maria de França; Firmino,Paulo Yuri Milen; Fernandes,Paula Frassinetti Castelo Branco Camurça; Garcia,José Huygens Parente; Oliveira,Cláudia Maria Costa de; Néri,Eugenie Desirèe Rabelo.
A descriptive and prospective study was conducted on the pharmaceutical care in the post-transplant outpatient clinic of Hospital Universitario Walter Cantidio of Universidade Federal do Ceará (HUWC/UFC), in Fortaleza- Ceará in the period of April to October of 2011. The aim of the present study was to describe the pharmaceutical interventions performed in a Pharmaceutical Care service structured in the liver and kidney transplant outpatient clinic of an academic hospital. The Pharmaceutical interventions (PI) were classified according to Sabater et al.(2005), with significance based on Riba et al.(2000) and the Negative Outcomes associated with Medication (NOM) established at the Third Consensus of Granada. Statistical analyses were performed using the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pharmaceutical care; Pharmaceutical interventions; Liver transplant/pharmaceutical interventions; Kidney transplant/pharmaceutical interventions; Patient safety; Pharmacotherapeutic treatment/monitoring.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000400005

Internationalizing Brazilian Pharmaceutical Sciences
Provedor de dados: 60
Autores: Ferreira,Elizabeth Igne.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000300001

A simple method for the quantification of diclofenac potassium in oral suspension by high-performance liquid chromatography with UV-detection
Provedor de dados: 60
Autores: Rubim,Alexandre Machado; Rubenick,Jaqueline Bandeira; Laporta,Luciane Varine; Rolim,Clarice Madalena Bueno.
A rapid, simple and low cost method was developed to determine diclofenac potassium (DP) in oral suspension, using a reverse-phase column (C8, 150 mm x 4.6 mm, 5 µm), mobile phase containing methanol/buffer phosphate (70:30 v/v, pH 2.5), at a flow rate of 1.0 mL/min, isocratic method, and ultraviolet detection at 275 nm. A linear response (r = 1.0000) was observed in the range of 10.0-50.0 µg/mL. Validation parameters such as linearity, specificity, precision, accuracy and robustness were evaluated. The method presented precision (repeatability: relative standard deviation = 1.21% and intermediate precision: between-analyst = 0.85%). The specificity of the assay was evaluated by exposure of diclofenac potassium under conditions of stress such as...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: High performance liquid chromatography; Diclofenac potassium; Oral suspension.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000300021

Pharmacokinetic study of isoquercitrin in rat plasma after intravenous administration at three different doses
Provedor de dados: 60
Autores: Xue,Hefei; Li,Yuzhong; Zhang,Wenjie; Lu,Dongrui; Chen,Yinghui; Yin,Jingjing; Meng,Yihan; Ying,Xixiang; Kang,Tingguo.
The aim of this study is to develop a simple and specific HPLC method using vitexin as the internal standard to investigate the pharmacokinetics of isoquercitrin (ISOQ) after three different doses administrated intravenously to rats. The pharmacokinetic parameters were calculated by both compartmental and non-compartmental approaches. The results showed that ISOQ fitted a three-compartment open model. The values of AUC increased proportionally within the range of 5-10 mg·kg-1. Moreover, a half-life, b half-life, ªCL, MRT0-t and MRT0→&amp;#8734; of ISOQ in rats showed significant differences between 20 mg·kg-1 and other doses, indicating that ISOQ presented dose-dependent pharmacokinetics in the range of 5-10 mg·kg-1 and non-linear pharmacokinetics at...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Isoquercitrin/pharmacokinetics; Isoquercitrin/experimental study; High Performance Liquid Chromatography; Crataegus pinnatifida Bge; Var major/leaves; Var major/phytochemistry.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000300005

Formulation, in vitro drug release and in vivo human X-ray investigation of polysaccharide based drug delivery systems for targeting 5-fluorouracil to the colon
Provedor de dados: 60
Autores: Chickpetty,Sidramappa Mallikarjun; Raga,Baswaraj Veerappa.
The purpose of this research study was to develop 5-fluorouracil compression coated tablets by using biodegradable polysaccharide polymer locust bean gum (LBG) and hydroxyl propyl methyl cellulose (HPMC) as coating materials. The fast disintegrating core tablets containing 50 mg of 5-fluorouracil were compression coated with LBG and HPMC in different ratios (8:1, 7:2 and 6:3) with a coat weight of 300, 400 and 500 mg. In vitro dissolution data indicated that the formulation (CLH63) with a coat weight of 500 mg containing LBG and HPMC in the ratio 6:3 gave the best release profile (0% in first 5 hour and 96.18% in 24 hours). DSC and FTIR results indicated no possibility of interaction between drug and polymers or other excipients. In vivo human X-ray...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Compression coated tablet; Locust bean gum; Colon targeting; 5-fluorouracil; Colon cancer and X-ray.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000200008

Dendrimers: from the art of building precise molecules to the dissemination through the world
Provedor de dados: 60
Autores: Vargas,Jeanine Giarolla.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000700001

Equilibrium solubility versus intrinsic dissolution: characterization of lamivudine, stavudine and zidovudine for BCS classification
Provedor de dados: 60
Autores: Dezani,André Bersani; Pereira,Thaisa Marinho; Caffaro,Arthur Massabki; Reis,Juliana Mazza; Serra,Cristina Helena dos Reis.
Solubility and dissolution rate of drugs are of major importance in pre-formulation studies of pharmaceutical dosage forms. The solubility improvement allows the drugs to be potential biowaiver candidates and may be a good way to develop more dose-efficient formulations. Solubility behaviour of lamivudine, stavudine and zidovudine in individual solvents (under pH range of 1.2 to 7.5) was studied by equilibrium solubility and intrinsic dissolution methods. In solubility study by equilibrium method (shake-flask technique), known amounts of drug were added in each media until to reach saturation and the mixture was subjected to agitation of 150 rpm for 72 hours at 37 ºC. In intrinsic dissolution test, known amount of each drug was compressed in the matrix of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Drugs/solubility; Drugs/dissolution rate; Intrinsic dissolution/method; Intrinsic dissolution/biopharmaceutical classification; Biopharmaceutical Classification System.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000400026

Use of an indicator to evaluate physician adherence to prescription guidelines for the treatment of heart failure
Provedor de dados: 60
Autores: Oliveira,Márcio Galvão; Passos,Luiz Carlos; Santos Júnior,Edval Gomes; Barbosa,Andrea Cristina; Santos,Djanilson Barbosa.
The aim of this study was to use indicators to evaluate physician adherence to prescription guidelines for heart failure treatment in a university hospital. This was a prospective cohort study conducted in a university hospital. The information collected at the time of patient admission, including therapeutic indication, absolute contra indications and intolerance, was utilised for the formulation of a guideline adherence indicator (GAI). This indicator was calculated as follows: (the number of patients who used the medication/the number of eligible patients) x 100. The percentage of eligible patients was calculated using the following formula: (the number of eligible patients/the total number patients) x 100. The GAI was applied to a population of 53...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Heart failure/treatment; Health care; Clinical medicine/practice guidelines; Medicines/use; Medicines/prescriptions.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000400023

Enhancement of solubility and dissolution rate of poorly water soluble raloxifene using microwave induced fusion method
Provedor de dados: 60
Autores: Patil,Payal Hasmukhlal; Belgamwar,Veena Sailendra; Patil,Pratibha Ramratan; Surana,Sanjay Javerilal.
The objective of the present work was to enhance the solubility and dissolution rate of the drug raloxifene HCl (RLX), which is poorly soluble in water. The solubility of RLX was observed to increase with increasing concentration of hydroxypropyl methylcellulose (HPMC E5 LV). The optimized ratio for preparing a solid dispersion (SD) of RLX with HPMC E5 LV using the microwave-induced fusion method was 1:5 w/w. Microwave energy was used to prepare SDs. HPMC E5 LV was used as a hydrophilic carrier to enhance the solubility and dissolution rate of RLX. After microwave treatment, the drug and hydrophilic polymer are fused together, and the drug is converted from the crystalline form into an amorphous form. This was confirmed through scanning electron microscopy...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Raloxifene HCl; Microwave-induced fusion method; Solid dispersion; Solubility enhancement; HPMC E5 LV.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000300019

Medication errors: classification of seriousness, type, and of medications involved in the reports from a university teaching hospital
Provedor de dados: 60
Autores: Dalmolin,Gabriella Rejane dos Santos; Rotta,Eloni Terezinha; Goldim,José Roberto.
Medication errors can be frequent in hospitals; these errors are multidisciplinary and occur at various stages of the drug therapy. The present study evaluated the seriousness, the type and the drugs involved in medication errors reported at the Hospital de Clínicas de Porto Alegre. We analyzed written error reports for 2010-2011. The sample consisted of 165 reports. The errors identified were classified according to seriousness, type and pharmacological class. 114 reports were categorized as actual errors (medication errors) and 51 reports were categorized as potential errors. There were more medication error reports in 2011 compared to 2010, but there was no significant change in the seriousness of the reports. The most common type of error was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Medication/errors; Drug therapy; Patients/safety.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000400019

Pharmaceutical sciences scenario in CNPq research fellowship
Provedor de dados: 60
Autores: Guterres,Silvia Stanisçuaski; Lopes,João Luis Callegari; Barreiro,Eliezer J.; Mello,João Carlos Palazzo de.
Tipo: Info:eu-repo/semantics/other
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000400001

Characterization and evaluation of acid-modified starch of Dioscorea oppositifolia (Chinese yam) as a binder in chloroquine phosphate tablets
Provedor de dados: 60
Autores: Okunlola,Adenike; Akingbala,Oluwatomi.
Chinese yam (Dioscorea oppositifolia) starch modified by acid hydrolysis was characterized and compared with native starch as a binder in chloroquine phosphate tablet formulations. The physicochemical and compressional properties (using density measurements and the Heckel and Kawakita equations) of modified Chinese yam starch were determined, and its quantitative effects as a binder on the mechanical and release properties of chloroquine phosphate were analyzed using a 2³ full factorial design. The nature (X1), concentration of starch (X2) and packing fraction (X3) were taken as independent variables and the crushing strength-friability ratio (CSFR), disintegration time (DT) and dissolution time (t80) as dependent variables. Acid-modified Chinese yam...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acid hydrolysis; Chinese yam/starch; Chinese yam/binding properties; Factorial design; Drugs/release; Dioscorea oppositifolia/pharmaceutics.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000400009

Floating tablets of hydralazine hydrochloride: optimization and evaluation
Provedor de dados: 60
Autores: Vanitha,Kondi; Varma,Mohan; Ramesh,Alluri.
Hydralazine hydrochloride has a half-life of 2 to 4 hours with an oral bioavailability of 26-50%. Since hydralazine has a demethylating effect on various suppressor genes, it can be used in various types of cancer to support chemotherapy. The purpose of this study was to optimize and evaluate floating tablets of hydralazine hydrochloride designed to prolong the gastric residence time and to provide controlled release of the drug for 14 h. The floating tablets of hydralazine hydrochloride were prepared by the wet granulation method. Semi-synthetic polymers of hydroxy propyl methyl cellulose (HPMC K100M) and ethyl cellulose were used as the release retarding agents. A 2² factorial design was applied to systematically optimize the drug release profile. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hydralazine/floating tablets; Hydralazine/evaluation; Hydralazine/floating tablets; Hydralazine/optimization; Hydralazine/floating tablets; Hydralazine/controlled release; In vivo X-ray/tablets performance; Cancer/treatment.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000400021

Bioanalytical method development and validation for determination of metoprolol tartarate and hydrochlorothiazide using HPTLC in human plasma
Provedor de dados: 60
Autores: Rote,Ambadas Ranganath; Sonavane,Poonam Ramdas.
A simple, sensitive, rapid and economic chromatographic method has been developed for determination of metoprolol tartarate and hydrochlorothiazide in human plasma using paracetamol as an internal standard. The analytical technique used for method development was high-performance thin-layer chromatography. HPTLC Camag with precoated silica gel Plate 60F254 (20 cm×10 cm) at 250 µm thicknesses (E. Merck, Darmstadt, Germany) was used as the stationary phase. The mobile phase used consisted of chloroform: methanol: ammonia (9:1:0.5v/v/v). Densitometric analysis was carried out at a wavelength of 239 nm. The rf values for hydrochlorothiazide, paracetamol and metoprolol tartarate were 0.13±0.04, 0.28±0.05, 0.48±0.04, respectively. Plasma samples were extracted...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: High performance thin layer chromatography/quantitative analysis; Metoprolol tartarate/determination in plasma; Hydrochlorothiazide/determination in plasma; Human plasma/quantitative analysis; Protein precipitation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000400025

Isolation of flavonoids from Anemopaegma arvense (Vell) Stellf. ex de Souza and their antifungal activity against Trichophyton rubrum
Provedor de dados: 60
Autores: Costanzo,Camila Di Giovane; Fernandes,Vanessa Colnaghi; Zingaretti,Sônia; Beleboni,Rene Oliveira; Pereira,Ana Maria Soares; Marins,Mozart; Taleb-Contini,Sílvia Helena; Pereira,Paulo Sérgio; Fachin,Ana Lúcia.
Anemopaegma arvense (Vell) Stellf. ex de Souza belongs to the family Bignoniaceae, and is popularly known as catuaba. To evaluate the cytotoxic and antimicrobial activity of A. arvense, fraction F3 and flavonoids 1 (quercetin 3-O-α-L-rhamnopyranosyl-(1→6)-β-D-glucopyranoside) (rutin) and flavonoid 2 (quercetin 3-O-α-L-rhamnopyranosyl-(1→6)-β-D-galactopyranoside) were isolated from the leaves of this plant. Fraction F3 and flavonoids 1 and 2 exhibited no antibacterial activity. Furthermore, no cytotoxic activity of fraction 3 or flavonoids 1 and 2 was observed against the tumor cells tested. However, analysis of the antifungal activity of flavonoids 1 and 2 revealed minimum inhibitory concentrations of 0.5 and 0.25 mg/mL, respectively, against the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bignoniaceae; Anemopaegma arvense/phytochemistry; Catuaba/phytochemistry; Flavonoids/antifungal activity; Plant extract/evaluation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000300017

Biological properties of water-soluble phosphorhydrazone dendrimers
Provedor de dados: 60
Autores: Caminade,Anne-Marie; Turrin,Cédric-Olivier; Majoral,Jean-Pierre.
Dendrimers are hyperbranched and perfectly defined macromolecules, constituted of branches emanating from a central core in an iterative fashion. Phosphorhydrazone dendrimers constitute a special family of dendrimers, possessing one phosphorus atom at each branching point. The internal structure of these dendrimers is hydrophobic, but hydrophilic terminal groups can induce the solubility of the whole structure in water. Indeed, the properties of these compounds are mainly driven by the type of terminal groups their bear; this is especially true for the biological properties. For instance, positively charged terminal groups are efficient for transfection experiments, as drug carriers, as anti-prion agents, and as inhibitor of the aggregation of Alzheimer's...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dendrimers; Phosphorhydrazone dendrimers; Biological properties; Nanomedicine.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000700004

Dendrimers as anti-inflammatory agents
Provedor de dados: 60
Autores: Avti,Pramod K.; Kakkar,Ashok.
Dendrimers constitute an intriguing class of macromolecules which find applications in a variety of areas including biology. These hyperbranched macromolecules with tailored backbone and surface groups have been extensively investigated as nanocarriers for gene and drug delivery, by molecular encapsulation or covalent conjugation. Dendrimers have provided an excellent platform to develop multivalent and multifunctional nanoconjugates incorporating a variety of functional groups including drugs which are known to be anti-inflammatory agents. Recently, dendrimers have been shown to possess anti-inflammatory properties themselves. This unexpected and intriguing discovery has provided an additional impetus in designing novel active pharmaceutical agents. In...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dendrimers; Nanocarriers; Anti-inflammatory agents; Cyclooxygenase (COX-2); Inducible nitric oxide synthase (iNOS); Pro-inflammatory cytokines.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000700006

Antiulcer, wound healing and hepatoprotective activities of the seaweeds Gracilaria crassa, Turbinaria ornata and Laurencia papillosa from the southeast coast of India
Provedor de dados: 60
Autores: Senthil,Kulandhaisamy Arul; Murugan,Annappan.
Seaweeds have bioactive compounds of interest in the pharmaceutical industry. In India, seaweeds are used exclusively for phycocolloids production and have not yet received consideration as a dietary supplement. So, it has become imperative to explore the biomedical potential of seaweeds and promote their utilization as a functional food. The seaweeds Turbinaria ornata, Gracillaria crassa and Laurencia papillosa, collected from the Tuticorin coast of the Southeast coast of India and selected based on preliminary screening, were extracted with acetone and evaluated for antiulcer, wound healing and hepatoprotective activities. L. papillosa showed the highest level of gastric protection activity (81%) at 200 mg/kg, comparable to the standard drug ranitidine...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Seaweed/biomedical potential; Seaweed/antiulcer activity; Seaweed/wound-healing; Seaweed/hepatoprotective activity; Gracilaria crassa/biomedical potential; Turbinaria ornata/biomedical potential; Laurencia papillosa/biomedical potential.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000400006

Stability evaluation of organic Lip Balm
Provedor de dados: 60
Autores: Fernandes,Alessandra Ribeiro; Dario,Michelli Ferrera; Pinto,Claudinéia Aparecida Sales de Oliveira; Kaneko,Telma Mary; Baby,André Rolim; Velasco,Maria Valéria Robles.
Rising global demand for natural products whose production is harmless to the environment has stimulated the development of natural cosmetics and, within this category, organics (95% organic raw materials). The image of environmentally friendly production is one of the strongest attractions of organic products. Lip balm is a cosmetic product similar to lipstick whose purpose is to prevent lip dryness and protect against adverse environmental factors. The product's characteristics are: resistance to temperature variations, pleasant flavor, innocuousness, smoothness during application, adherence and easy intentional removal. This work involved the development of a lip balm formulated with certified organic raw materials and the execution of stability tests:...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lip balm; Stability; Cocoa butter; Cosmetic; Organic.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000200011

In vitro evaluation of transdermal nicotine delivery systems commercially available in Brazil
Provedor de dados: 60
Autores: Ruela,André Luís Morais; Figueiredo,Eduardo Costa; Perissinato,Aline Gravinez; Lima,Ana Carolina Zogbi; Araújo,Magali Benjamim; Pereira,Gislaine Ribeiro.
The aim of this study was to develop and validate a method for evaluating the release and skin permeation from transdermal nicotine patches using the vertical diffusion cell (VDC). The VDC is an experimental apparatus employed in research, development, and the pharmaceutical field because it can simulate conditions closest to those established in clinical trials. Two transdermal nicotine delivery systems marketed in Brazil to release 14 mg over 24 hours were evaluated. Release studies were carried out using a regenerated cellulose dialysis membrane and permeation studies were carried out using excised porcine ear skin. The results indicated that nicotine release from both evaluated patches follows Higuchi's release kinetics, while skin permeation studies...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nicotine/release and skin permeation; Transdermal delivery patches/evaluation; Vertical diffusion cell; Skin permeation; Transdermal formulations/nicotine delivery systems.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000300020

Development and validation of an HPLC method for the determination of fluorouracil in polymeric nanoparticles
Provedor de dados: 60
Autores: Mattos,Ana Cristina de; Khalil,Najeh Maissar; Mainardes,Rubiana Mara.
The objective of this work was to develop and validate a rapid high performance liquid chromatography (HPLC) method for the quantitative analysis of fluorouracil (5-FU) in polymeric nanoparticles. Chromatographic analyses were performed on an RP C18 column with a mobile phase consisting of acetonitrile and water (10:90, v/v) at a flow rate of 1 mL/min. The 5-FU was detected and quantitated using a photodiode array detector at a wavelength of 265 nm. The method was shown to be specific and linear in the range of 0.1-10 µg/mL (r = 0.9997). The precision (intra- and inter-day) was demonstrated because the maximum relative standard deviation was 3.51%. The method is robust relative to changes in flow rate, column and temperature. The limits of detection and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fluorouracil/determination; Nanoparticles; High performance liquid chromatography/quantitative analysis; High performance liquid chromatography/method validation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000100013

From dendrimers to fractal polymers and beyond
Provedor de dados: 60
Autores: Moorefield,Charles N.; Schultz,Anthony; Newkome,George R.
The advent of dendritic chemistry has facilitated materials research by allowing precise control of functional component placement in macromolecular architecture. The iterative synthetic protocols used for dendrimer construction were developed based on the desire to craft highly branched, high molecular weight, molecules with exact mass and tailored functionality. Arborols, inspired by trees and precursors of the utilitarian macromolecules known as dendrimers today, were the first examples to employ predesigned, 1 → 3 C-branched, building blocks; physical characteristics of the arborols, including their globular shapes, excellent solubilities, and demonstrated aggregation, combined to reveal the inherent supramolecular potential (e.g., the unimolecular...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arborol; Dendrimer; Supramolecular; Terpyridine; Self-assembly.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000700007

Glycodendritic structures: tools to interact with DC-SIGN
Provedor de dados: 60
Autores: Reina,Jose J.; Rojo,Javier.
The key role of carbohydrates in many biological events has attracted the interest of the scientific community. This fact has demanded the access to new tools necessary to understand this role and the interaction of carbohydrates with their corresponding receptors, lectins. Glycodendrimers and glycodendritic structures in general, have demonstrated to be very efficient and interesting tools to intervene in those processes where carbohydrates participate. In this review, we discuss the different glycodendritic structures that have been used to interfere with DC-SIGN, a very attractive lectin involved in infection processes and in the regulation of the immune response.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: DC-SIGN; Ebola; Glycodendrimers; Glycofullerenes; HIV; Mannose.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000700009

Stryphnodendron adstringens (Mart.) Coville (Fabaceae) proanthocyanidins quantitation by RP-HPLC
Provedor de dados: 60
Autores: Nascimento,André Márcio do; Guedes,Priscila Tavares; Castilho,Rachel Oliveira; Vianna-Soares,Cristina Duarte.
Stryphnodendron adstringens (Mart.) Coville (barbatimão) is a tree belonging to the Fabaceae family, and it is commonly found in the southeastern Brazilian cerrado. The stem bark of this tree is traditionally used as an anti-inflammatory and antiseptic agent to treat leucorrhea and diarrhea, as well as to promote wound healing (owing to the presence of proanthocyanidins). Proanthocyanidins were obtained from the ethanolic extract of S. adstringens stem bark and assessed by reversed phase-high performance liquid chromatography with an ultraviolet/diode array detector. The identified compounds included gallic acid, catechin, gallocatechin (GC), epigallocatechin, and epigallocatechin gallate (EGCG). The selected markers, GC and EGCG, were simultaneously used...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Stryphnodendron adstringens/phytochemistry; Fabaceae/phytochemistry; Barbatimão/extrato vegetal; Barbatimão/evaluation; Proanthocyanidins/evaluation; RP-High performance liquid chromatography/análise quantitativa.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000300016

Pharmacokinetics of diltiazem hydrochloride delay-onset sustained-release pellet capsules in healthy volunteers
Provedor de dados: 60
Autores: Yan,Xi-Qing; Chen,Zhi-Gang; Wang,Rong-Liang; Yang,Jun; Ai,Fang; Pan,Yan-Juan; Qiu,Pei-Yong; Wang,Da-Xin.
The pharmacokinetics (PK) of ordinary tablets and sustained release capsules of diltiazem hydrochloride in human clinical trials had been studied. The PK of diltiazem hydrochloride delay-onset sustained-release pellet capsules, a new dosage form, has not been reported, although it is very important to clinical use. In this paper, we investigated the PK of diltiazem hydrochloride delay-onset sustained-release pellet capsules and the food influence in Chinese healthy volunteers. The PK parameters indicated that the diltiazem hydrochloride delay-onset sustained-release pellet capsules appeared marked characteristics of delayed and controlled release. An opened-label, randomized and parallel clinical trial was conducted in 36 Chinese healthy volunteers with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diltiazem hydrochloride/delay-onset sustained-release pellet capsules; Diltiazem hydrochloride/pharmacokinetics; Food/ingestion; Food/effect in pharmacokinetic profile; High-performance liquid chromatography/quantitative analysis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000100004

Development of enteric coated sustained release minitablets containing mesalamine
Provedor de dados: 60
Autores: Souza,Dayse Fernanda de; Goebel,Karin; Andreazza,Itamar Francisco.
The aim of this study was to develop and evaluate a multiparticulate modified release system, composed of minitablets with a sustained release matrix system coated with a pH-dependent release polymer, using mesalamine as a model drug. Polyox® WSR 1105 was the polymer used in the matrix system and Eudragit® L30D55 was used as a pH-dependent polymer. The minitablets (with 20%, 30% or 40% Polyox® concentration) were prepared by dry granulation, which led to good quality minitablets. The developed minitablets were coated in a fluidized bed at 8% of the coating level. Dissolution studies were performed in media that simulated the gastrointestinal tract (pH 1.4, 6.0 and 7.2) and showed that formulations with higher Polyox® concentrations were capable of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mesalamine/modified release; Mesalamine/evaluation; Minitablets coated/modified release; Minitablets coated/evaluation; Polyethylene oxide/drugs coating; Drugs/modified release.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000300014

Fabrication, physicochemical characterization and preliminary efficacy evaluation of a W/O/W multiple emulsion loaded with 5% green tea extract
Provedor de dados: 60
Autores: Mahmood,Tariq; Akhtar,Naveed; Khan,Barkat Ali; Rasul,Akhtar; Khan,Haji M. Shoaib.
Complex multiple emulsions have an excellent ability to fill large volumes of functional cosmetic agents. This study was aimed to encapsulate large volume of green tea in classical multiple emulsion and to compare its stability with a multiple emulsion without green tea extract. Multiple emulsions were developed using Cetyl dimethicone copolyol as lipophilic emulsifier and classic polysorbate-80 as hydrophilic emulsifier. Multiple emulsions were evaluated for various physicochemical aspects like conductivity, pH, microscopic analysis, rheology and these characteristics were followed for a period of 30 days in different storage conditions. In vitro and in vivo skin protection tests were also performed for both kinds of multiple emulsions i.e. with active...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cosmetics; Green tea; Multiple emulsion; Rheology; Skin; Stability.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000200016

Urinary excretion of L-carnitine, acetyl-L-carnitine, propionyl-L-carnitine and their antioxidant activities after single dose administration of L-carnitine in healthy subjects
Provedor de dados: 60
Autores: Cao,Yu; Hao,Chuan-ji; Wang,Chen-jing; Li,Peng-li; Wang,Le-xin; Guan,Hua-shi; Li,Huan-ting.
The urine excretion of L-carnitine (LC), acetyl-L-carnitine (ALC) and propionyl-Lcarnitine (PLC) and their relations with the antioxidant activities are presently unknown. Liquid L-carnitine (2.0 g) was administered orally as a single dose in 12 healthy subjects. Urine concentrations of LC, ALC and PLC were detected by HPLC. Superoxide dismutase (SOD), total antioxidative capacity (T-AOC), malondialdehyde (MDA) and nitrogen monoxidum (NO) activities were measured by spectrophotometric methods. The 0~2 h, 2~4 h, 4~8 h, 8~12 h, 12~24 h excretion of LC was 53.13±31.36 µmol, 166.93±76.87 µmol, 219.92±76.30 µmol, 100.48±23.89 µmol, 72.07±25.77 µmol, respectively. The excretion of ALC was 29.70±14.43 µmol, 80.59±32.70 µmol, 109.85±49.21 µmol, 58.65±18.55 µmol,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: L-carnitine/antioxidant activity; Acetyl-L-carnitine/antioxidant activity; Propionyl-Lcarnitine/antioxidant activity; Antioxidants; Urine excretion/analysis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000100020

Synthesis and MALDI-ToF characterization of dendronized poly(ethylene glycol)s
Provedor de dados: 60
Autores: Myers,Brittany K.; Lapucha,Joanna E.; Grayson,Scott M.
Well-defined hybrids of linear poly(ethylene glycol)s (PEGs) and dendritic polyesters were prepared via the dendronization of the alcohol end groups of the mono and difunctional linear PEGs. Though useful for rudimentary product characterization, GPC and NMR could not verify the overall structural purity of these linear-dendritic hybrids. On the other hand, the detailed data provided by MALDI-ToF mass spectrometry enabled confirmation of the high structural purity of the dendronized PEGs at each step of the dendronization procedure. The well-defined number of functionalities on these dendronized PEGs, renders them particularly useful for research in the biomedical sphere where functionality and purity are of the utmost importance. The MALDI-ToF mass...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Poly(ethylene glycol); Dendrons; Dendrimers; Dendronized polymers.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000700005

Comparison of dissolution profile of extended-release oral dosage forms - two one-sided equivalence test
Provedor de dados: 60
Autores: Lourenço,Felipe Rebello; Ghisleni,Daniela Dal Molim; Yamamoto,Rosa Noriko; Pinto,Terezinha de Jesus Andreoli.
The aim of this work is to present the two one-sided test (TOST) as an alternative approach to compare dissolution profiles of extended-release dosage forms. The dissolution profiles of oxycodone extended-release tablets containing 10 mg, 20 mg and 40 mg (reference and generic) were evaluated according to the requirements described in United States Pharmacopeia. These dissolution profiles were compared using the conventional similarity factor (f2) and the proposed TOST as an equivalence test. TOST is a simple and alternative approach to compare dissolution profiles of extended-release dosage forms. It allows us to identify the time-point (or time-points) that did not show similarity. We concluded that the two one-sided test performed at a significance...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dissolution profile; Extended-release tablets; Similarity factor; Two one-sided test; Equivalence test.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000200019

Ferulic acid and derivatives: molecules with potential application in the pharmaceutical field
Provedor de dados: 60
Autores: Paiva,Lívia Brenelli de; Goldbeck,Rosana; Santos,Wanderley Dantas dos; Squina,Fabio Marcio.
Ferulic acid is a phenolic acid widely distributed in the plant kingdom. It presents a wide range of potential therapeutic effects useful in the treatments of cancer, diabetes, lung and cardiovascular diseases, as well as hepatic, neuro and photoprotective effects and antimicrobial and anti-inflammatory activities. Overall, the pharmaceutical potential of ferulic acid can be attributed to its ability to scavenge free radicals. However, recent studies have revealed that ferulic acid presents pharmacological properties beyond those related to its antioxidant activity, such as the ability to competitively inhibit HMG-CoA reductase and activate glucokinase, contributing to reduce hypercholesterolemia and hyperglycemia, respectively. The present review...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ferulic acid/properties; Ferulic acid/antioxidant activity; Ferulic acid/dietary sources; Ferulic acid/therapeutic effects; Natural products; Pharmacognosy.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000300002

Development and validation of a rapid high performance liquid chromatography - photodiode array detection method for estimation of a bioactive compound wedelolactone in extracts of Eclipta alba
Provedor de dados: 60
Autores: Kumar,Satyanshu; Dhanani,Tushar.
Following optimization of extraction, separation and analytical conditions, a rapid, sensitive and simple reverse-phase high performance liquid chromatography-photo diode array (HPLC-PDA) method has been developed for the identification and quantification of wedelolactone in different extracts of Eclipta alba. The separation of wedelolactone was achieved on a C18 column using the solvent system consisting of a mixture of methanol: water: acetic acid (95: 5: 0.04) as a mobile phase in isocratic elution mode followed by photo diode array detection at 352 nm. The developed method was validated as per the guidelines of the International Conference on Harmonization (ICH). Calibration curve presented good linear regression (r²&gt;0.998) within the test range and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: High performance liquid chromatography/quantitative analysis; High performance liquid chromatography/photo diode array; High performance liquid chromatography/method validation; Eclipta alba/extracts; Eclipta alba/analysis; Wedelolactone/quantification.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000100007

Formulation and evaluation of carvedilol microcapsules using Eudragit NE30D and sodium alginate
Provedor de dados: 60
Autores: Bal,Trishna; Sengupta,Shubhranshu; Murthy,Padala Narasimha.
Inclusion complexes of carvedilol(CR) with hydroxyl propyl beta-cyclodextrin (HPBCD) was prepared using co-grinding technique. Then, the inclusion complex was microencapsulated using combinations of Eudragit NE30D (EU) and sodium alginate (SA) utilizing orifice gelation technique. The formulations were analysed by using Scanning electron microscopy (SEM), Fourier Transform Infrared spectroscopy (FTIR), Differential scanning Calorimetry (DSC) and X-ray diffractometer (XRD) and also evaluated for particle size, encapsulation efficiency, production yield, swelling capacity, mucoadhesive properties, zeta potential and drug release. The microcapsules were smooth and showed no visible cracks and extended drug release of 55.2006% up to 12 hours in phosphate...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carvedilol/microcapsules; Carvedilol/evaluation; Carvedilol/microcapsules; Carvedilol/formulation; Eudragit NE30D; Orifice Gelation technique.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000400029

Anatomical characters of the medicinal leaf and stem of Gymnanthemum amygdalinum (Delile) Sch.Bip. ex Walp. (Asteraceae)
Provedor de dados: 60
Autores: Duarte,Márcia do Rocio; Silva,Ariane Gonçalves.
Gymnanthemum amygdalinum (Delile) Sch.Bip. ex Walp. (Asteraceae), better known by its former name Vernonia amygdalina Delile, is a small shrub used in folk medicine as an antipyretic, laxative, antimalarial and anthelmintic. Studies have demonstrated that different vegetal extracts possess antioxidant, antimicrobial and antiparasitic activities. Among the bioactive metabolites, there are sesquiterpene lactones, saponins, polyphenols and flavonoids. This study investigated the leaf and stem microscopic characters of G. amygdalinum, aiming to expand the knowledge on this medicinal species and indicate anatomical structures. Plant material was fixed and sectioned by freehand and using a microtome. The sections were either stained or underwent standard...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gymnanthemum amygdalinum/pharmacognosy; Gymnanthemum amygdalinum/microscopic characterization; Vernonia amygdalina/pharmacognosy; Vernonia amygdalina/microscopic characterization; Asteraceae/pharmacognosy; Medicinal plants.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000400011

Basic considerations in the dermatokinetics of topical formulations
Provedor de dados: 60
Autores: Nair,Anroop; Jacob,Shery; Al-Dhubiab,Bandar; Attimarad,Mahesh; Harsha,Sree.
Assessing the bioavailability of drug molecules at the site of action provides better insight into the efficiency of a dosage form. However, determining drug concentration in the skin layers following topical application of dermatological formulations is a great challenge. The protocols followed in oral formulations could not be applied for topical dosage forms. The regulatory agencies are considering several possible approaches such as tape stripping, microdialysis etc. On the other hand, the skin bioavailability assessment of xenobiotics is equally important for topical formulations in order to evaluate the toxicity. It is always possible that drug molecules applied on the skin surface may transport thorough the skin and reaches systemic circulation....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dermatological formulations/pharmacokinetics; Dermatological formulations/toxicity; Dermatokinetics; Skin/metabolism; Microdialysis; Tape stripping.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000300004

Effect of cross-linked biodegradable polymers on sustained release of sodium diclofenac-loaded microspheres
Provedor de dados: 60
Autores: Saha,Avik Kumar; Ray,Sarbani Dey.
The objective of this study was to formulate an oral sustained release delivery system of sodium diclofenac(DS) based on sodium alginate (SA) as a hydrophilic carrier in combination with chitosan (CH) and sodium carboxymethyl cellulose (SCMC) as drug release modifiers to overcome the drug-related adverse effects and to improve bioavailability. Microspheres of DS were prepared using an easy method of ionotropic gelation. The prepared beads were evaluated for mean particle size, entrapment efficiency, swelling capacity, erosion and in-vitro drug release. They were also subjected to various studies such as Fourier Transform Infra-Red Spectroscopy (FTIR) for drug polymer compatibility, Scanning Electron Microscopy for surface morphology, X-ray Powder...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alginate beads/preparation; Alginate beads/evaluation; Drugs/sustained release; Interpenetrating network; Sodium diclofenac/microsphere; Sodium diclofenac/sustained release; Ionotropic gelation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000400028

Preparation and characterisation of Dextran-70 hydrogel for controlled release of praziquantel
Provedor de dados: 60
Autores: Campos,Flávio dos Santos; Cassimiro,Douglas Lopes; Crespi,Marisa Spirandeli; Almeida,Adélia Emília; Gremião,Maria Palmira Daflon.
A hydrogel was developed from 70 kDa dextran (DEX-70) and praziquantel (PZQ) incorporated as a model drug. Biopharmaceutical properties, such as solubility and dissolution rate, were analysed in the design of the hydrogel. Furthermore, the hydrogel was also characterized by IR spectroscopy and DSC. Tests of the swelling rate showed that the hydrogel swelled slowly, albeit faster than the rate for the free polymer. In dissolution tests, the hydrogel released the drug slowly and continuously. This slow release was similar to that observed in the swelling tests and resulted in controlled release of the drug. Thus, this dextran is a suitable polymer for the development of hydrogels as vehicles for the controlled release of drugs.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hydrogel/development; Hydrogel/biopharmaceutical properties; Dextran/hydrogel development; Praziquantel/controlled release; Hydrogel/swelling test.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000100009

Quality parameters of some Brazilian panettones
Provedor de dados: 60
Autores: Valcárcel-Yamani,Beatriz; Lannes,Suzana Caetano da Silva.
In panettone, physical and chemical properties can determine the quality attributes in addition to consumer acceptability. The aim of this work was to assess the quality attributes of nine commercial samples of Brazilian panettone. Samples were characterized according to their physicochemical (moisture and color) aspects, quality attributes (specific volume, density and texture) and image analysis. The results of the statistical analysis (ANOVA and Tukey) showed significant differences (p&lt;0.05) among the samples. Differences were observed in the specific volume and density. Samples showed moisture values between 22.83% and 26.86%. The texture analysis showed greater variation in values of crumb firmness (from 2.14 N to 7.55 N). Significant differences...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Panettone/physical and chemical properties; Panettone/qualitative analysis; Panettone/texture; Panettone/color; Panettone/image analysis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000300012

Social inequalities in lawsuits for drugs
Provedor de dados: 60
Autores: Provin,Mércia Pandolfo; Leite,Silvana Nair; Amaral,Rita Goreti.
The aim of this study was to characterize the lawsuits requesting drugs considering the economic profile of their petitioners. All lawsuits (1378) accepted against Goiânia, GO from 2003 to 2007 were analyzed. Petitioners' demographic characteristics, reported diseases, requested drugs, origin of healthcare service, and lawsuit agent were described. Complainants' addresses were georeferenced and distributed into 4 regional groups classified in accordance with the population's average income. Dwellers of wealthier regions filed court actions requesting drugs more frequently, with an average rate of 1.7 lawsuits/1000 inhabitants versus 0.55/1000 in the poorer region. Lawsuit costs were 4-fold higher in wealthier regions compared with the poorest region....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Health rights; Drugs/access; Health inequalities; Health care.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000300008

Analgesic and anti-inflammatory activities of several 4-substituted-6-(3'-nitrophenyl)pyridazin-(2H)-3-one derivatives
Provedor de dados: 60
Autores: Singh,Anita; Lakshmayya,; Asif,Mohammad.
Several 6-aryl-4-substituted benzylidene/furfurylidene pyridazin(2H)-3-one derivatives (4a-f) were synthesized and evaluated as analgesic and anti-inflammatory agents in mice and rats, respectively. All compounds were tested by using Eddy's hot plate and the carrageenan-induced hind paw oedema method for the evaluation of analgesic and anti-inflammatory activities, respectively. Results showed that compounds 4f, 4b, 4d, and 4e exhibited higher analgesic and anti-inflammatory activities than other remaining compounds. All title compounds (4a-f) were characterized by IR, NMR and Mass spectroscopy.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pyridazinone/evaluation; Pyridazinone/experimental study; Analgesics/evaluation; Analgesics/experimental study; Anti-inflammatories/evaluation; Anti-inflammatories/experimental study; Synthetic compounds/evaluation; Synthetic compounds/experimental study..
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000400030

In vitro dissolution kinetic for mycophenolic acid derivatives tablets
Provedor de dados: 60
Autores: Costa,André Lima de Oliveira; Enéas,Paula Cristina Rezende; Miranda,Tiago Assis; Mingoti,Sueli Aparecida; Soares,Cristina Duarte Vianna; Pianetti,Gerson Antônio.
Mycophenolate mofetil (MMF) and mycophenolate sodium (MPS) are an ester and a salt of mycophenolic acid. They have different kinetic in vivo characteristics due to differences in molecular structures, physicochemical properties and formulations administered. In this study, dissolution profiles of reference products were tested in different media to evaluate the effect of pH, kinetic dissolution and the best statistical model that can be used to predict the release of both drugs. The drug release was determined by using a validated ultraviolet spectrophotometry method, λ 250 nm. The method showed to be selective, linear, precise and accurate for MMF in 0.1 M HCl and MPS in sodium phosphate buffer pH 6.8. Dissolution kinetics models of zero order, first...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mycophenolate sodium; Mycophenolate mofetil; Dissolution profiles; Weibull kinetics.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000200013

Dendritic surface functionalization of nanomaterials: controlling properties and functions for biomedical applications
Provedor de dados: 60
Autores: Nazemi,Ali; Gillies,Elizabeth R.
A wide variety of nanomaterials have demonstrated promise in medical applications such as drug delivery and imaging. In these applications, the surface chemistry of the materials is critical as it plays an important role in determining the toxicity and biodistribution behavior of the material. We review here the functionalization of nanomaterials with dendrons as an efficient method to alter the surface chemistry of the materials, introducing new properties and functions. Described here is the functionalization of superparamagnetic iron oxide nanoparticles (SPIO) with dendritic guanidines to enhance their transport into cells for magnetic resonance imaging applications. The introduction of dendrons bearing peripheral hydroxyls, amines, guanidines,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dendrimer; Superparamagnetic Iron Oxide Nanoparticles; Polymersome; Pharmaceutical applications.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000700003

Pharmaceutical consultation as a tool to improve health outcomes for patients with type 2 diabetes
Provedor de dados: 60
Autores: Zubioli,Arnaldo; Silva,Maria Angélica Rafaini Covas Pereira da; Tasca,Raquel Soares; Curi,Rui; Bazotte,Roberto Barbosa.
This study develops and evaluates a pharmaceutical consultation program (PCP) to improve treatment for Type 2 diabetes patients (T2DP) and reduce risk factors for diabetic complications with possible application in other chronic diseases. We recruited T2DP receiving conventional medical treatment but with fasting glycemia &amp;gt;140mg/dl and/or glycated hemoglobin &amp;gt;7%. The PCP includes strategies obtained from Dader's method, the PWDT (Pharmacist's Workup of Drug Therapy method) model of pharmaceutical care, the SOAP (Subjective data, Objective data, Assessment, and Plan of care) method, and concepts based on a nursing care model. The PCP evaluated lifestyle, pharmacotherapy and monitoring it using laboratory tests, vital signs, and anthropometry....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pharmaceutical care; Type 2 diabetes/treatment; Type 2 diabetes/pharmaceutical care; Pharmaceutical consultation; Glycated hemoglobin; Diabetes education; Pharmacy.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000100010

Compatibility and stability of valsartan in a solid pharmaceutical formulation
Provedor de dados: 60
Autores: Júlio,Tamíris Amanda; Zâmara,Igor Fernando; Garcia,Jerusa Simone; Trevisan,Marcello Garcia.
Valsartan (VAL) is a highly selective blocker of the angiotensin II receptor that has been widely used in the treatment of hypertension. Active pharmaceutical ingredient compatibility with excipients (crospovidone, hypromellose, magnesium stearate, microcrystalline cellulose and titanium dioxide) is usually evaluated in solid pharmaceutical development. Compatibility and stability can be evaluated by liquid chromatography. Studies were performed using binary mixtures of 1:1 (w/w) VAL/excipient; samples were stored under accelerated stability test conditions (40 ºC at 75% relative humidity). The results indicate that VAL is incompatible with crospovidone and hypromellose, which reduced the VAL content and gave rise to new peaks in the chromatogram due to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Valsartan/compatibility; Valsartan/stability; Hypertension/treatment; Differential Scanning Calorimetry/drug analysis; High performance liquid chromatography/quantitative analysis; Pharmaceutical formulations/quantitative analysis..
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000400003

Determination of the critical hydrophile-lipophile balance of licuri oil from Syagrus coronata: application for topical emulsions and evaluation of its hydrating function
Provedor de dados: 60
Autores: Leal,Leila Bastos; Sousa,Giovana Damasceno; Seixas,Karoline Belém; Souza,Pedro Henrique Nogueira de; Santana,Davi Pereira de.
The aims of this study were to determine the critical hydrophile-lipophile balance (HLB) of licuri oil, and to perform a clinical assay to evaluate its hydrating effects. For the determination of the HLB, serial emulsions were prepared with the oil. Regarding the clinical study, 13 human subjects were recruited to evaluate the hydrating power of the emulsified preparation containing licuri oil, and comparing it with the same preparation containing sweet almond oil (SAO). The critical HLB of licuri oil was represented by the zones within the concentrations of 10% for the oil and 15% for the pair of tensoactive agents, with a value of 11.8. Both preparations showed similar hydrating power. We propose that licuri oil can be considered a new lipophilic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Licuri/fixed oil; Licuri/determination of hydrophile-lipophile balance; Licuri/fixed oil; Licuri/hydration effects; Emulsions/preparation with licuri oil; Skin hydration.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000100018

Influence of particle size on appearance and in vitro efficacy of sunscreens
Provedor de dados: 60
Autores: Silva,Débora Granemann e; Sarruf,Fernanda Daud; Oliveira,Larissa Carolina Diniz de; Arêas,Elizabeth Pinheiro Gomes; Kaneko,Telma Mary; Consiglieri,Vladi Olga; Velasco,Maria Valéria Robles; Baby,André Rolim.
Nanotechnology applies to diverse sectors of science. In cosmetic area, investments have strengthened the idea that nanoproducts provide innumerable benefits to consumers. Extreme exposition to solar light can cause undesirable effects, thus, adding UV filters in cosmetic products are often used as prevention. Ethylhexyl methoxycinnamate and benzophenone-3 are UV filters widely used in sunscreen formulations, this UV filters absorb UVB and UVA radiation, respectively. In this study, sunscreen formulations were developed as nano and macroemulsion, but composed by the same raw material. Nanoemulsion was obtained by phase inversion temperature method (PIT). Physical and functional properties were evaluated by visual analysis, particle size distribution and by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nanoemulsion; PIT method; Benzophenone-3; Ethylhexyl methoxycinnamate.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000200007

Influence of fermentation time on characteristics of sourdough bread
Provedor de dados: 60
Autores: Aplevicz,Krischina Singer; Ogliari,Paulo José; Sant'Anna,Ernani Sebastião.
Sourdough is used in the manufacture of numerous baked products. The microorganisms used in this preparation of sourdoughs included two strains from the Lactobacillus paracasei (1 and 2) and two strains from the Saccharomyces cerevisiae group (1 and 2). Samples of raw dough were analyzed for pH, titratable acidity and plate counts and samples of resulting bread were analyzed for pH, titratable acidity and specific volume. The samples were analyzed every 2 h, between 4 and 10 h of fermentation. After 10 hours of fermentation, the lowest values of pH were for dough with LC2 and bread with SC1. Titratable acidity values increased over time, with the highest levels of acidity were found in the dough and bread with yeasts. Lactic acid bacteria showed the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sourdough; Bread; Lactic acid bacteria; Yeast; Linear regression.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000200005

The physical, chemical and functional characterization of starches from Andean tubers: oca (Oxalis tuberosa Molina), olluco (Ullucus tuberosus Caldas) and mashua (Tropaeolum tuberosum Ruiz &amp;amp; Pavón)
Provedor de dados: 60
Autores: Valcárcel-Yamani,Beatriz; Rondán-Sanabria,Gerby Giovanna; Finardi-Filho,Flavio.
The physical, chemical, and functional properties of starches isolated from the Andean tubers oca (Oxalis tuberosa M.), olluco (Ullucus tuberosus C.) and mashua (Tropaeolum tuberosum R. &amp;amp; P.) were studied. The tubers were obtained from a local grocery. The morphology of the starch granules (size and shape) was studied with scanning electron microscopy (SEM), which revealed ellipsoid, oval, conical, pear-shaped and prismatic forms: ellipsoids and oval granules with lengths up to 54.30 µm in oca; with lengths up to 32.09 µm for olluco starch granules; and with predominantly truncated spherical or oval forms and smaller dimensions (up to 16.29 um) for mashua starch granules. Amylose contents were similar among the samples: 27.60% (oca), 26.49%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Andean tubers/physiochemical properties; Andean tubers/functional properties; Tuber starches; Scanning electron microscopy/chemical analysis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000300007

Nitric oxide releasing-dendrimers: an overview
Provedor de dados: 60
Autores: Roveda Júnior,Antonio Carlos; Franco,Douglas Wagner.
Platforms able to storage, release or scavenge NO in a controlled and specific manner is interesting for biological applications. Among the possible matrices for these purposes, dendrimers are excellent candidates for that. These molecules have been used as drug delivery systems and exhibit interesting properties, like the possibility to perform chemical modifications on dendrimers surface, the capacity of storage high concentrations of compounds of interest in the same molecule and the ability to improve the solubility and the biocompatibility of the compounds bonded to it. This review emphasizes the recent progress in the development and in the biological applications of different NO-releasing dendrimers and the nitric oxide release pathways in these...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dendrimer; Nitric oxide; Nitrosyl complexes; Diazeniumdiolate; Nitrosothiol.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000700002

Antibacterial evaluation of Styrax pohlii and isolated compounds
Provedor de dados: 60
Autores: Bertanha,Camila Spereta; Utrera,Susane Hellen; Gimenez,Valéria Maria Melleiro; Groppo,Milton; Silva,Márcio Luis Andrade e; Cunha,Wilson Roberto; Martins,Carlos Henrique Gomes; Januário,Ana Helena; Pauletti,Patrícia Mendonça.
The antibacterial activity of the compounds egonol (1) and homoegonol (2), of the crude ethanolic extract of Styrax pohlii (Styracaceae) aerial parts (EE), and of its n-hexane (HF), EtOAc (EF), n-BuOH (BF), and hydromethanolic (HMF) fractions was evaluated against the following microorganisms: Streptococcus pneumoniae (ATCC 6305), S. pyogenes (ATCC 19615), Haemophilus influenzae (ATCC 10211), Pseudomonas aeruginosa (ATCC 27853), and Klebsiella pneumoniae (ATCC 10031). The broth microdilution method was used for determination of the minimum inhibitory concentration (MIC) during preliminary evaluation of antibacterial activity. The EE yielded MIC values of 400 µg/mL for S. pneumoniae and P. aeruginosa and 300 µg/mL for H. influenzae. The HF and EF fractions...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Styrax pohlii/pharmacognosy; Styracaceae/pharmacognosy; Styrax pohlii/ethanolic extract; Styrax pohlii/antibacterial activity; Egonol/antibacterial activity; Homoegonol/antibacterial activity; Natural products/evaluation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000400004

Development and stability assessment of liquid paediatric formulations containing sildenafil citrate
Provedor de dados: 60
Autores: Roque,Fátima; Rama,Ana Cristina; Sousa,João José; Pina,Maria Eugénia.
The purpose of this study is to develop and improve oral liquids formulations of sildenafil citrate for paediatric use. Four different formulations were developed, which are as follows: two aqueous solutions of sildenafil citrate (2.5 mg/mL), with or without preservatives, and two other solutions of sildenafil in simple syrup (1.25 mg/mL), with or without preservatives. All of the formulations were physically, chemically and microbiologically stable for three months. The results of the stability studies allowed for the optimisation of formulations without preservatives due to their simplicity and their similar stable conditions when compared to the formulations containing antimicrobials. The shelf life of both formulations was three months; however, upon...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chemical stability; Microbiological stability; Sildenafil citrate; Paediatric formulations.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000200021

Evaluation of (anti)genotoxic activities of Phyllanthus niruri L. in rat bone marrow using the micronucleus test
Provedor de dados: 60
Autores: Queiroz,Fernando Márlisson de; Matias,Kayo Wanderson de Oliveira; Cunha,Mylena Mylana Freire da; Schwarz,Aline.
Phyllanthus niruri L. (Euphorbiaceae), known as "quebra-pedra" (Portuguese for "stonebreaker"), is an herb used for kidney disorders. In light of its frequent use by the population, the present study aimed to investigate the genotoxic, antigenotoxic and cytotoxic activities of a standardized P. niruri extract in bone marrow rats. Three groups of 12 animals were treated daily by gavage over a period of 30 days, with 50, 150 or 250 mg/kg of P. niruri extract aqueous solution. The control group (n = 12) received tap water. At the end of treatment (day 31), groups were divided into two minor subgroups (n=6/group) and received cyclophosphamide (50 mg/kg, i.p.) or saline 0.9% (i.p.). After 24 hours, we evaluated the frequency of micronucleated polychromatic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phyllanthus niruri L./genotoxicity; Phyllanthus niruri L./toxicological analysis; Phyllanthus niruri L./experimental study; Medicinal plantas/evaluation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000100015

In vitro release of diclofenac diethylamine from gels: evaluation of generic semisolid drug products in Brazil
Provedor de dados: 60
Autores: Goebel,Karin; Sato,Mayumi Eliza Otsuka; Souza,Dayse Fernanda de; Murakami,Fábio Seigi; Andreazza,Itamar Francisco.
In order for the pharmacological action of a topical dermal drug product to occur, the drug must first be released from the vehicle to be available to penetrate the skin layers and reach the site of action. Drug release is mainly dependent on the characteristics of the formulation. Currently, to register a generic or a similar drug product in Brazil performance testing of topical drug products for local action is not required. In this context, this aim of this study was to evaluate the in vitro release of commercial diclofenac diethylamine gel products available on the Brazilian pharmaceutical market, using the vertical diffusion cell method. Factors which may influence the test, such as the type of membrane used, and the effect of the formulation...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: In vitro release test; Diclofenac diethylamine/gel; Synthetic membranes; Generic semisolid drug products.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000200003

Carbon nanotubes as a novel drug delivery system for anticancer therapy: a review
Provedor de dados: 60
Autores: Kushwaha,Swatantra Kumar Singh; Ghoshal,Saurav; Rai,Awani Kumar; Singh,Satyawan.
Carbon nanotubes (CNTs) were discovered in 1991 and shown to have certain unique physicochemical properties, attracting considerable interest in their application in various fields including drug delivery. The unique properties of CNTs such as ease of cellular uptake, high drug loading, thermal ablation, among others, render them useful for cancer therapy. Cancer is one of the most challenging diseases of modern times because its therapy involves distinguishing normal healthy cells from affected cells. Here, CNTs play a major role because phenomena such as EPR, allow CNTs to distinguish normal cells from affected ones, the Holy Grail in cancer therapy. Considerable work has been done on CNTs as drug delivery systems over the last two decades. However,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carbon nanotubes/properties; Carbon nanotubes/use; Carbon nanotubes/drugs delivery; Single-Walled Carbon Nanotube; Multiwalled Carbon Nanotube; Anticancer drugs/delivery; Cancer/therapy; Drugs/delivery.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000400002

Osteomyelitis: an overview of antimicrobial therapy
Provedor de dados: 60
Autores: Gomes,Diana; Pereira,Margarida; Bettencourt,Ana Francisca.
Osteomyelitis is an inflammatory bone disorder caused by infection, leading to necrosis and destruction of bone. It can affect all ages, involve any bone, become a chronic disease and cause persistent morbidity. Treatment of osteomyelitis is challenging particularly when complex multiresistant bacterial biofilm has already been established. Bacteria in biofilm persist in a low metabolic phase, causing persistent infection due to increased resistance to antibiotics. Staphylococcus aureus and Staphylococcus epidermidis are the most common causative organism responsible for more than 50% of osteomyelitis cases. Osteomyelitis treatment implies the administration of high doses of antibiotics (AB) by means of endovenous and oral routes and should take a period...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Osteomyelitis/pharmacological treatment; Osteomyelitis/antimicrobial therapy; Staphylococcus aureus/presence; Staphylococcus aureus/Osteomyelitis; Antibiotics/use; Antibiotics/osteomyelitis treatment.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000100003

Ensayo sobre un acumulo social en Bolivia. La ciudad de el Alto durane la "Guerra del Gas" en octubre 2013
Provedor de dados: 121
Autores: Boris Inti Chamani Velasco; Chamani Velasco, Boris Inti.
Tipo: Text
Palavras-chave: RELACIONES INTERNACIONALES; MOVIMIENTOS SOCIALES; ASPECTOS SOCIALES; GUERRA DEL GAS; EL ALTO (CIUDAD); BOLIVIA; TESIS.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132678&tab=opac&oai:flacso.org.ec:132678

La naturaleza con derechos una propuesta para un cambio civilizatorio
Provedor de dados: 121
Tipo: Text
Palavras-chave: MEDIO AMBIENTE; NATURALEZA; DERECHO AMBIENTAL.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134814&tab=opac&oai:flacso.org.ec:134814

El orden internacional perfecto
Provedor de dados: 121
Autores: Vicente Torrijos; Torrijos, Vicente.
Tipo: Text
Palavras-chave: RELACIONES INTERNACIONALES; SEGURIDAD NACIONAL; COLOMBIA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134085&tab=opac&oai:flacso.org.ec:134085

El tiempo, 1967 noviembre-diciembre
Provedor de dados: 121
Tipo: Text
Palavras-chave: PERIODICO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135095&tab=opac&oai:flacso.org.ec:135095

Anales de la Universidad Central del Ecuador, 1928-1934
Provedor de dados: 121
Autores: director, Alberto Larrea Ch., ... [et al.].
Tipo: Text
Palavras-chave: UNIVERSIDAD; MEDICINA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135107&tab=opac&oai:flacso.org.ec:135107

Corrientes espirituales en Cuba
Provedor de dados: 121
Tipo: Text
Palavras-chave: HISTORIA; CUBA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135282&tab=opac&oai:flacso.org.ec:135282

Sentencia por genocidio y delitos contra los deberes de humanidad contra el pueblo Maya Ixil
Provedor de dados: 121
Tipo: Text
Palavras-chave: DERECHOS HUMANOS; GENOCIDIO; MAYAS-IXILES; ASPECTOS SOCIALES; CONFLICTOS SOCIALES; LEYES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=137086&tab=opac&oai:flacso.org.ec:137086

Fiebre de radio
Provedor de dados: 121
Tipo: Text
Palavras-chave: FORMATOS.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136118&tab=opac&oai:flacso.org.ec:136118

El tiempo, 1968 septiembre-octubre
Provedor de dados: 121
Tipo: Text
Palavras-chave: PERIODICO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135100&tab=opac&oai:flacso.org.ec:135100

Earthmasters the dawn of the age of climate engineering
Provedor de dados: 121
Autores: Clive Hamilton; Hamilton, Clive.
Tipo: Text
Palavras-chave: CONTROL ARTIFICIAL.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133620&tab=opac&oai:flacso.org.ec:133620

Una mirada a nuestra historia movimiento Nacional Ecuador Runucunapak Rikcharimuy
Provedor de dados: 121
Autores: ed. por Pacha Cabascango Chicaiza.
Tipo: Text
Palavras-chave: MOVIMIENTOS SOCIALES; MOVIMIENTO NACIONAL ECUADOR RUNAKUPAK RIKCHARIMUY (ECUARUNARI); HISTORIA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132460&tab=opac&oai:flacso.org.ec:132460

Power and regionalism in Latin America the politics of Mercosur
Provedor de dados: 121
Tipo: Text
Palavras-chave: RELACIONES INTERNACIONALES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133999&tab=opac&oai:flacso.org.ec:133999

El misterio del mal Benedicto XVI y el fin de los tiempos
Provedor de dados: 121
Autores: Giorgio Agambern; Agamben, Giorgio.
Tipo: Text
Palavras-chave: DEMOCRACIA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136650&tab=opac&oai:flacso.org.ec:136650

Indigenous and afro-ecuadoarians facing the twenty-first century
Provedor de dados: 121
Autores: ed. por Marc Becker.
Tipo: Text
Palavras-chave: CULTURA; MULTICULTURALIDAD.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132628&tab=opac&oai:flacso.org.ec:132628

Cases of exclusion and mobilization of race and ethnicities in Latin America
Provedor de dados: 121
Autores: ed. por Marc Becker.
Tipo: Text
Palavras-chave: MOVIMIENTOS SOCIALES; ETNICIDAD; MULTICULTURALIDAD.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132714&tab=opac&oai:flacso.org.ec:132714

Yonkeros
Provedor de dados: 121
Autores: Jaime Permuth; Permuth, Jaime.
Tipo: Text
Palavras-chave: INDUSTRIA; METAL; COMERCIO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132588&tab=opac&oai:flacso.org.ec:132588

A crucial link local peace committees and national peacebuilding
Provedor de dados: 121
Autores: Andries Odendaal; Odendaal, Andries.
Tipo: Text
Palavras-chave: PACIFISMO; ASPECTOS SOCIALES; RESTABLECIMIENTO DE LA PAZ.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134891&tab=opac&oai:flacso.org.ec:134891

Los cochinones
Provedor de dados: 121
Autores: Euler Granda; Granda, Euler.
Tipo: Text
Palavras-chave: POEMAS; LITERATURA ECUATORIANA; ECUADOR.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133896&tab=opac&oai:flacso.org.ec:133896

Angels of light? sanctity and the discernment of spririts in the early modern period
Provedor de dados: 121
Autores: ed. por Clare Copelend y Jan Machielsen.
Tipo: Text
Palavras-chave: SANTIDAD; EDAD MODERNA; SANTOS; VISIONES; ENSAYOS.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=137332&tab=opac&oai:flacso.org.ec:137332

Globalization, social movements, and peacebuilding
Provedor de dados: 121
Autores: ed. por Jackie Smith y Ernesto Verdeja.
Tipo: Text
Palavras-chave: PAZ; MOVIMIENTOS SOCIALES; CONFLICTOS SOCIALES; CONFLICTO INTERNACIONAL.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=139750&tab=opac&oai:flacso.org.ec:139750

El tiempo, 1966 enero-febrero
Provedor de dados: 121
Tipo: Text
Palavras-chave: PERIODICO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135084&tab=opac&oai:flacso.org.ec:135084

Managerial economics theory, application, and cases
Provedor de dados: 121
Autores: por W. Bruce Allen  ...[et al.].
Tipo: Text
Palavras-chave: OFERTA Y DEMANDA; MERCADO; CONSUMO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135650&tab=opac&oai:flacso.org.ec:135650

Manifiesto del partido comunista
Provedor de dados: 121
Autores: Karl Marx y Friedrich Engels; Marx, Karl.
Tipo: Text
Palavras-chave: COMUNISMO; MARXISMO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136871&tab=opac&oai:flacso.org.ec:136871

Inseguridad societal en Ecuador violencia, migraciones, manipulaciones y sufrimiento humano entre local y global
Provedor de dados: 121
Tipo: Text
Palavras-chave: SEGURIDAD CIUDADANA; VIOLENCIA; CONFLICTOS; MOVIMIENTOS SOCIALES; ECUADOR.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132838&tab=opac&oai:flacso.org.ec:132838

Robert Rauschenberg
Provedor de dados: 121
Autores: Catherine Craft; Craft, Catherine.
Tipo: Text
Palavras-chave: PINTURA; PINTORES; ARTE POP.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132274&tab=opac&oai:flacso.org.ec:132274

Sobre el cielo y la tierra las opiniones del Papa Francisco sobre la familia, la fe y el papel de la Iglesia en el siglo XXI
Provedor de dados: 121
Autores: Jorge Bergoglio y  Abraham Skorka; Bergoglio, Jorge.
Tipo: Text
Palavras-chave: CRISTIANISMO; PROBLEMAS SOCIALES; DOCTRINAS; IGLESIA; ARGENTINA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132731&tab=opac&oai:flacso.org.ec:132731

REDD+ in a climate of injustice
Provedor de dados: 121
Autores: James Patrick McBreen; McBreen, James Patrick.
Tipo: Text
Palavras-chave: ASPECTOS SOCIOAMBIENTALES; MEDIO AMBIENTE; PROBLEMAS AMBIENTALES; DERECHO AMBIENTAL; TESIS.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133167&tab=opac&oai:flacso.org.ec:133167

Indicadores de partidos y sistemas de partidos
Provedor de dados: 121
Tipo: Text
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134184&tab=opac&oai:flacso.org.ec:134184

Estudios de arte colonial
Provedor de dados: 121
Autores: Francisco Stastny Mosberg; Stastny Mosberg, Francisco.
Tipo: Text
Palavras-chave: ARTE COLONIAL; ARTE; PINTURA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134128&tab=opac&oai:flacso.org.ec:134128

A mathematics course for political &amp; social research
Provedor de dados: 121
Autores: Will H. Moore y David A. Siegel; Moore, Will H.
Tipo: Text
Palavras-chave: CIENCIAS SOCIALES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134478&tab=opac&oai:flacso.org.ec:134478

Poverty and development in Latin America public policies and development pathaways
Provedor de dados: 121
Autores: ed. por Henry Veltmeyer; Darcy Tetreault.
Tipo: Text
Palavras-chave: POBREZA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134186&tab=opac&oai:flacso.org.ec:134186

El tiempo, 1966 septiembre-octubre
Provedor de dados: 121
Tipo: Text
Palavras-chave: PERIODICO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135088&tab=opac&oai:flacso.org.ec:135088

Financing regional growth and the inter-American development bank the case of Argentina
Provedor de dados: 121
Autores: Ernesto Vivares; Vivares, Ernesto.
Tipo: Text
Palavras-chave: BANCOS; FINANZAS; BANCO INTERAMERICANO DE DESARROLLO; ARGENTINA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134488&tab=opac&oai:flacso.org.ec:134488

Obras
Provedor de dados: 121
Autores: Walter Benjamin; Benjamin, Walter.
Tipo: Text
Palavras-chave: CULTURA; HISTORIA; LITERATURA; ROMANTICISMO; LITERATURA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=137909&tab=opac&oai:flacso.org.ec:137909

Ecuador made in China
Provedor de dados: 121
Autores: Fernando Villavicencio V.; Villavicencio V., Fernando.
Tipo: Text
Palavras-chave: NEGOCIOS; RELACIONES INTERNACIONALES; PETROCHINA; ECUADOR.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=131014&tab=opac&oai:flacso.org.ec:131014

Opting out of war strategies to prevent violent conflict
Provedor de dados: 121
Autores: Mary B. Anderson y Marshall Wallace; Anderson, Mary B.
Tipo: Text
Palavras-chave: CONFLICTO; VIOLENCIA; SOCIEDAD; PAZ.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=139680&tab=opac&oai:flacso.org.ec:139680

Kings for three days the play of race and gender in an Afro-Ecuadorian festival
Provedor de dados: 121
Autores: Jean Muteba Rahier; Rahier, Jean Muteba.
Tipo: Text
Palavras-chave: AFROECUATORIANOS; PROVINCIA DE ESMERALDAS; ECUADOR; ROLES SEXUALES; VIDA SOCIAL Y COSTUMBRES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132558&tab=opac&oai:flacso.org.ec:132558

Transfeminismos epistemes, fricciones y flujos
Provedor de dados: 121
Tipo: Text
Palavras-chave: HOMOSEXUALIDAD; FEMINISMO; ASPECTOS SOCIALES; MOVIMIENTOS SOCIALES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136018&tab=opac&oai:flacso.org.ec:136018

International human rights
Provedor de dados: 121
Autores: Jack Donnelly; Donnelly, Jack.
Tipo: Text
Palavras-chave: DERECHOS HUMANOS; DERECHO INTERNACIONAL; ESTADOS UNIDOS; GENOCIDIO; TERRORISMO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136869&tab=opac&oai:flacso.org.ec:136869

The world until yesterday what can we learn from traditional societies?
Provedor de dados: 121
Autores: por Jared Diamond; Diamond, Jared.
Tipo: Text
Palavras-chave: CAMBIO SOCIAL; ASPECTOS SOCIALES; COSTUMBRES Y TRADICIONES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=131280&tab=opac&oai:flacso.org.ec:131280

El tiempo, 1967 marzo-abril
Provedor de dados: 121
Tipo: Text
Palavras-chave: PERIODICO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135091&tab=opac&oai:flacso.org.ec:135091

The international handbook on gender, migration and transnational global and development perspective
Provedor de dados: 121
Autores: ed. por Laura Oso y Natalia Ribas-Mateos.
Tipo: Text
Palavras-chave: DESARROLLO; ASPECTOS SOCIALES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136352&tab=opac&oai:flacso.org.ec:136352

The mixtecs of Oaxaca ancient times to the present
Provedor de dados: 121
Autores: Ronald Spores y Andrew K. Balkansky; Spores, Ronald.
Tipo: Text
Palavras-chave: HISTORIA; CULTURA; OAXACA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136421&tab=opac&oai:flacso.org.ec:136421

El pensamiento de la izquierda comunista (1928-1961)
Provedor de dados: 121
Tipo: Text
Palavras-chave: COMUNISMO; PARTIDO COMUNISTA ECUATORIANO; PROLETARIADO; HISTORIA; ECUADOR.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135748&tab=opac&oai:flacso.org.ec:135748

Breve historia del... homo sapiens
Provedor de dados: 121
Tipo: Text
Palavras-chave: HOMO SAPIENS; CULTURA; CLASES SOCIALES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133603&tab=opac&oai:flacso.org.ec:133603

The sensuous in the counter-reformation church
Provedor de dados: 121
Autores: ed. por Marcia B. Hall y Tracy E. Cooper.
Tipo: Text
Palavras-chave: ARTE RELIGIOSO; CRISTIANISMO; CONTRARREFORMA; REFORMA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136432&tab=opac&oai:flacso.org.ec:136432

Digital disconnect how capitalism is turning the internet against democracy
Provedor de dados: 121
Autores: Robert Waterman McChesney; McChesney, Robert Waterman.
Tipo: Text
Palavras-chave: INTERNET; CAPITALISMO; DEMOCRACIA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134474&tab=opac&oai:flacso.org.ec:134474

Cruel modernity
Provedor de dados: 121
Autores: Franco Jean; Franco, Jean.
Tipo: Text
Palavras-chave: TERRORISMO; RELACIONES INTERNACIONALES; HISTORIA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135978&tab=opac&oai:flacso.org.ec:135978

Hacia una reforma del bono de desarrollo humano algunas reflexiones
Provedor de dados: 121
Autores: Juan Ponce ... [et al.].
Tipo: Text
Palavras-chave: DESARROLLO HUMANO; BIENESTAR SOCIAL; BONO DE DESARROLLO HUMANO; ECUADOR.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=131634&tab=opac&oai:flacso.org.ec:131634

Saberes y conocimiento sobre el parto historia de la vida de una partera afroecuatoriana
Provedor de dados: 121
Autores: Janeth Iraida Mina Arroyo; Mina Arroyo, Janeth Iraida.
Tipo: Text
Palavras-chave: PARTO TRADICIONAL; MUJERES AFRODESCENDIENTES; MATERNIDAD; PARTERAS; INTERCULTURALIDAD; CULTURA; ASPECTOS SOCIALES; ESMERALDAS; ECUADOR; TESIS.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133169&tab=opac&oai:flacso.org.ec:133169

Breve historia de los Neandertales
Provedor de dados: 121
Tipo: Text
Palavras-chave: HOMBRE DE NEANDERTAL; EUROPA; PREHISTORIA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133762&tab=opac&oai:flacso.org.ec:133762

Bocas del tiempo una historia casi universal
Provedor de dados: 121
Autores: Eduardo Galeano; Galeano, Eduardo.
Tipo: Text
Palavras-chave: LITERATURA; CUENTOS CORTOS; HISTORIA UNIVERSAL; ASPECTOS SOCIALES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135393&tab=opac&oai:flacso.org.ec:135393

Antrhopology and art practice
Provedor de dados: 121
Autores: ed. por Arnd Schneider y Christopher Wright.
Tipo: Text
Palavras-chave: ARTE; IMAGEN.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136475&tab=opac&oai:flacso.org.ec:136475

El tiempo, 1967 julio-agosto
Provedor de dados: 121
Tipo: Text
Palavras-chave: PERIODICO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135093&tab=opac&oai:flacso.org.ec:135093

Qualitative inquiry and research design choosing among five approaches
Provedor de dados: 121
Autores: John W. Creswell; Creswell, John W.
Tipo: Text
Palavras-chave: CIENCIAS SOCIALES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=131550&tab=opac&oai:flacso.org.ec:131550

Una minga para el postdesarrollo lugar, medio ambiente y movimientos sociales en las transformaciones globales
Provedor de dados: 121
Autores: Arturo Escobar; Escobar, Arturo.
Tipo: Text
Palavras-chave: CULTURA; MOVIMIENTOS SOCIALES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133772&tab=opac&oai:flacso.org.ec:133772

El Pinar de Segismundo
Provedor de dados: 121
Tipo: Text
Palavras-chave: NOVELA ECUATORIANA; LITERATURA ECUATORIANA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133922&tab=opac&oai:flacso.org.ec:133922

Las lesbianas (no) somos mujeres en torno a Monique Wittig
Provedor de dados: 121
Tipo: Text
Palavras-chave: LESBIANISMO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=137935&tab=opac&oai:flacso.org.ec:137935

Hegel
Provedor de dados: 121
Tipo: Text
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136833&tab=opac&oai:flacso.org.ec:136833

El dolor de Dios inversiones del apocalipsis
Provedor de dados: 121
Tipo: Text
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135984&tab=opac&oai:flacso.org.ec:135984

Tras las huellas de las investigaciones sobre lectura y escritura en la universidad
Provedor de dados: 121
Tipo: Text
Palavras-chave: LECTURA; ESCRITURA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=138322&tab=opac&oai:flacso.org.ec:138322

El tiempo, 1965 septiembre-octubre
Provedor de dados: 121
Tipo: Text
Palavras-chave: PERIODICO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135082&tab=opac&oai:flacso.org.ec:135082

La vivienda social alianzas que construyen conocimiento
Provedor de dados: 121
Autores: Victoria Caicedo Madina.
Tipo: Text
Palavras-chave: VIVIENDA; VIVIENDA POPULAR; ASPECTOS SOCIALES; COLOMBIA; ESTUDIOS DE CASO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133767&tab=opac&oai:flacso.org.ec:133767

Representaciones del cuerpo, discursos e identidad del pueblo afroecuatoriano
Provedor de dados: 121
Tipo: Text
Palavras-chave: RACISMO; AFROECUATORIANOS; CULTURA; IDENTIDAD; DERECHOS HUMANOS; ECUADOR.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133375&tab=opac&oai:flacso.org.ec:133375

What is microhistory? theory and practice
Provedor de dados: 121
Tipo: Text
Palavras-chave: HISTORIA; MICROHISTORIAS.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134244&tab=opac&oai:flacso.org.ec:134244

Participatory visual and digital methods
Provedor de dados: 121
Autores: Aline Gubrium y Krista Harper; Gubrium, Aline.
Tipo: Text
Palavras-chave: GRABACIONES EN VIDEO; MEDIOS DIGITALES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=137159&tab=opac&oai:flacso.org.ec:137159

Estrategias de supervivencia campesina en torno a la agroindustria bananera estudio de caso de cuatro asociaciones campesinas en la Provincia del Oro
Provedor de dados: 121
Autores: Segundo Joselito Morocho Ajila; Morocho Ajila, Segundo Joselito.
Tipo: Text
Palavras-chave: CAMPESINOS; BANANO; PROVINCIA DE EL ORO; ECUADOR; TESIS.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132681&tab=opac&oai:flacso.org.ec:132681

Slave portraiture in the Atlantic world
Provedor de dados: 121
Autores: ed. por Agnes Lugo-Ortiz y Angela Rosenthal.
Tipo: Text
Palavras-chave: RETRATOS; ESCLAVITUD; ARTE; NEGROS.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136372&tab=opac&oai:flacso.org.ec:136372

Memorias de un documental Ecuador una mirada a su cultura financiera
Provedor de dados: 121
Autores: Superintendencia de Bancos y Seguros del Ecuador.
Tipo: Text
Palavras-chave: SUPERINTENDENCIA DE BANCOS; ECUADOR.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134070&tab=opac&oai:flacso.org.ec:134070

What was contemporary art?
Provedor de dados: 121
Autores: Richard Meyer; Meyer, Richard.
Tipo: Text
Palavras-chave: ARTE MODERNO; HISTORIA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134748&tab=opac&oai:flacso.org.ec:134748

El tiempo, 1966 mayo-junio
Provedor de dados: 121
Tipo: Text
Palavras-chave: PERIODICO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135086&tab=opac&oai:flacso.org.ec:135086

El tiempo, 1965 enero-febrero
Provedor de dados: 121
Autores: director, Carlos de la Torre Reyes.
Tipo: Text
Palavras-chave: PERIODICO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135078&tab=opac&oai:flacso.org.ec:135078

En busca de un lugar de la sociedad mundial la Escuela Inglesa y la Corte Penal Internacional
Provedor de dados: 121
Tipo: Text
Palavras-chave: RELACIONES INTERNACIONALES; JUSTICIA; DERECHOS HUMANOS; SOCIEDAD; CORTE PENAL INTERNACIONAL (CPI); ESCUELA INGLESA; JUSTICIA PENAL INTERNACIONAL.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134090&tab=opac&oai:flacso.org.ec:134090

Policing across borders law enforcement networks and the challenges of crime control
Provedor de dados: 121
Autores: ed. por George Andreopoulos.
Tipo: Text
Palavras-chave: DERECHO INTERNACIONAL; POLICIA; DELITOS; SEGURO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136888&tab=opac&oai:flacso.org.ec:136888

El tiempo, 1967 enero-febrero
Provedor de dados: 121
Tipo: Text
Palavras-chave: PERIODICO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135090&tab=opac&oai:flacso.org.ec:135090

Mejor no hablar de ciertas cosas
Provedor de dados: 121
Autores: Andrade, Javier.
Tipo: MovingImage
Palavras-chave: CINE.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134637&tab=opac&oai:flacso.org.ec:134637

Interdisciplina
Provedor de dados: 121
Autores: CEIICH.
Tipo: Text
Palavras-chave: INTERDISCIPLINARIEDAD; CIENCIAS SOCIALES; HUMANIDADES; ARTE; INGENIERIA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136741&tab=opac&oai:flacso.org.ec:136741

Territorios fragmentados huellas de la dictadura en la historia
Provedor de dados: 121
Autores: Patricio Rivas Herrera; Rivas Herrera, Patricio.
Tipo: Text
Palavras-chave: CHILE; HISTORIA; DICTADURAS; TORTURA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134294&tab=opac&oai:flacso.org.ec:134294

La ciudad a lo lejos
Provedor de dados: 121
Autores: Jean-Luc Nancy; Nancy, Jean-Luc.
Tipo: Text
Palavras-chave: CIUDAD; ARTE; HISTORIA SOCIAL.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=139131&tab=opac&oai:flacso.org.ec:139131

Mindless why smarter machines are making dumber humans
Provedor de dados: 121
Autores: Simon Head; Head, Simon.
Tipo: Text
Palavras-chave: CONDICIONES SOCIALES; INDUSTRIAS.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136879&tab=opac&oai:flacso.org.ec:136879

Capacidad recaudatoria del impuesto predial en Cuenca
Provedor de dados: 121
Autores: Ana Valeria.
Tipo: Text
Palavras-chave: IMPUESTOS Y TRIBUTOS; IMPUESTO PREDIAL; FINANZAS; TESIS.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133833&tab=opac&oai:flacso.org.ec:133833

Las paradojas del desarrollo local y del turismo
Provedor de dados: 121
Autores: Lilia Zizumbo Villarreal; Zizumbo Villarreal, Lilia.
Tipo: Text
Palavras-chave: DESARROLLO LOCAL; COMUNIDAD RURAL; ASPECTOS SOCIALES; TURISMO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132742&tab=opac&oai:flacso.org.ec:132742

Sustainable development in Latin America and the Caribbean follow-up to the United Nations development agenda beyond 2015 and to Rio+20
Provedor de dados: 121
Autores: coord.  por United Nations Development Programme.
Tipo: Text
Palavras-chave: DESARROLLO SOSTENIBLE.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134019&tab=opac&oai:flacso.org.ec:134019

La provincia, 1950-1963, [Portoviejo]
Provedor de dados: 121
Tipo: Text
Palavras-chave: PERIODICO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135146&tab=opac&oai:flacso.org.ec:135146

Transnational activism and national movements in Latin America bridging the divide
Provedor de dados: 121
Autores: ed. por Eduardo Silva.
Tipo: Text
Palavras-chave: MOVIMIENTOS SOCIALES; REFORMA SOCIAL.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136255&tab=opac&oai:flacso.org.ec:136255

Postcolonial studies the key concepts
Provedor de dados: 121
Autores: Bill Ashcroft, Gareth Griffiths y Helen Tiffin; Ashcroft, Bill.
Tipo: Text
Palavras-chave: POSCOLONIALISMO; COLONIALISMO; RELACIONES INTERRACIALES; DICCIONARIOS.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=137227&tab=opac&oai:flacso.org.ec:137227

Efectos de los conjuntos cerrados de Chillogallo en la vida urbana de los habitantes
Provedor de dados: 121
Tipo: Text
Palavras-chave: URBANISMO; DESARROLLO URBANO; CONDOMINIOS; CHILLOGALLO; BARRIOS; CIUDAD; QUITO; ECUADOR; TESIS.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132663&tab=opac&oai:flacso.org.ec:132663

Introductory econometrics a modern approach
Provedor de dados: 121
Autores: Jeffrey M. Wooldridge; Wooldridge, Jeffrey M.
Tipo: Text
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132090&tab=opac&oai:flacso.org.ec:132090

Los Arrieros del Pariacaca
Provedor de dados: 121
Autores: Eloy Rojas Rojas.
Tipo: MovingImage
Palavras-chave: CAMPESINOS; GANADEROS; PUNA; TANTA; YAUYOS; PARIACACA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=138401&tab=opac&oai:flacso.org.ec:138401

Cultura escrita y oralidad
Provedor de dados: 121
Autores: comp. David R. Olson y Nancy Torrance.
Tipo: Text
Palavras-chave: CULTURA; HISTORIA; LITERATURA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=138681&tab=opac&oai:flacso.org.ec:138681

Human rights politics and practice
Provedor de dados: 121
Autores: ed. por Michael Goodhart.
Tipo: Text
Palavras-chave: DERECHOS HUMANOS; RELACIONES INTERNACIONALES; DERECHO INTERNACIONAL; DEMOCRACIA; SOCIEDAD CIVIL.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136889&tab=opac&oai:flacso.org.ec:136889

El tiempo, 1968 mayo-junio
Provedor de dados: 121
Tipo: Text
Palavras-chave: PERIODICO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135098&tab=opac&oai:flacso.org.ec:135098

Contra la raza y los racismos
Provedor de dados: 121
Tipo: Text
Palavras-chave: RACISMO; HISTORIA; CUBA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135292&tab=opac&oai:flacso.org.ec:135292

Digital ethnography anthropology, narrative, and new media
Provedor de dados: 121
Autores: Natalie M. Underberg y Elayne Zorn; Underberg, Natalie M.
Tipo: Text
Palavras-chave: PROCESAMIENTOS DE DATOS; CULTURA; ERA DIGITAL.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=137975&tab=opac&oai:flacso.org.ec:137975

Theory in contemporary art since 1985
Provedor de dados: 121
Autores: ed.por Zoya Kocur y Simon Leung.
Tipo: Text
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134310&tab=opac&oai:flacso.org.ec:134310

Graffiteando al amanecer escritos sobre la arquitectura y la ciudad
Provedor de dados: 121
Tipo: Text
Palavras-chave: ARQUITECTURA; CIUDAD; ARTE; HISTORIA; URBANISMO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133389&tab=opac&oai:flacso.org.ec:133389

World development report
Provedor de dados: 121
Autores: The World Bank.
Tipo: Text
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136604&tab=opac&oai:flacso.org.ec:136604

Hamlet y Romeo y Julieta
Provedor de dados: 121
Autores: William Shakespeare; Shakespeare, William.
Tipo: Text
Palavras-chave: LITERATURA INGLESA; TEATRO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136574&tab=opac&oai:flacso.org.ec:136574

Moderne farbkonzepte
Provedor de dados: 121
Autores: Albert Oehlen; Oehlen, Albert.
Tipo: Text
Palavras-chave: PINTURA MODERNA; ARTE; EXPOSICIONES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134486&tab=opac&oai:flacso.org.ec:134486

Process - tracing methods foundations and guidelines
Provedor de dados: 121
Autores: Derek Beach  y Rasmus Brun Pedersen; Beach, Derek.
Tipo: Text
Palavras-chave: CIENCIAS SOCIALES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136795&tab=opac&oai:flacso.org.ec:136795

Contemporary art 1989 to the present
Provedor de dados: 121
Autores: ed. por Alexander Dumbadze y Suzanne Hudson.
Tipo: Text
Palavras-chave: ESCUELAS DE ARTE; POSMODERNIDAD; FORMALISMO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134673&tab=opac&oai:flacso.org.ec:134673

L'analyse qualitative en sciences humaines et sociales
Provedor de dados: 121
Tipo: Text
Palavras-chave: CIENCIAS SOCIALES; HUMANIDADES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=137226&tab=opac&oai:flacso.org.ec:137226

Derrida para los tiempos por venir
Provedor de dados: 121
Tipo: Text
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135405&tab=opac&oai:flacso.org.ec:135405

Animalia
Provedor de dados: 121
Tipo: Text
Palavras-chave: LITERATURA ECUATORIANA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133868&tab=opac&oai:flacso.org.ec:133868

Agent-based modeling and simulation with swarm
Provedor de dados: 121
Autores: Hitoshi Iba; Iba, Hitoshi.
Tipo: Text
Palavras-chave: INTELIGENCIA ARTIFICIAL; CIENCIA; SISTEMAS.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132712&tab=opac&oai:flacso.org.ec:132712

The ashgate research companion to the counter-reformation
Provedor de dados: 121
Autores: ed. Alexandra Bamji, Geert H. Janssen y Mary Laven.
Tipo: Text
Palavras-chave: HISTORIA; CAMBIO SOCIAL; SIGLO XVI; SIGLO XVII.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136206&tab=opac&oai:flacso.org.ec:136206

Religion and the senses in early modern Europe
Provedor de dados: 121
Tipo: Text
Palavras-chave: IGLESIA CRISTIANA; HISTORIA; CRISTINISMO; ARTE.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=137607&tab=opac&oai:flacso.org.ec:137607

El tiempo, 1965 noviembre-diciembre
Provedor de dados: 121
Tipo: Text
Palavras-chave: PERIODICO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135083&tab=opac&oai:flacso.org.ec:135083

El buen vivir Sumak kawsay, una oportunidad para imaginar otros mundos
Provedor de dados: 121
Autores: Alberto Acosta; Acosta, Alberto.
Tipo: Text
Palavras-chave: BUEN VIVIR; SUMAK KAWSAY; CULTURA; COLONIALISMO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132470&tab=opac&oai:flacso.org.ec:132470

Construir al enemigo y otros escritos
Provedor de dados: 121
Autores: Umberto Eco; Eco, Umberto.
Tipo: Text
Palavras-chave: LITERATURA ITALIANA; ENSAYOS.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=131819&tab=opac&oai:flacso.org.ec:131819

The hybrid media system politics and power
Provedor de dados: 121
Autores: Andrew Chadwick; Chadwick, Andrew.
Tipo: Text
Palavras-chave: INTERNET.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136454&tab=opac&oai:flacso.org.ec:136454

Espejos una historia casi universal
Provedor de dados: 121
Autores: Eduardo Galeano; Galeano, Eduardo.
Tipo: Text
Palavras-chave: HISTORIA; ENSAYOS; HISTORIA UNIVERSAL; ASPECTOS SOCIALES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135388&tab=opac&oai:flacso.org.ec:135388

The neoconservatives the origins of a movement
Provedor de dados: 121
Autores: Peter Steinfels; Steinfels, Peter.
Tipo: Text
Palavras-chave: CONSERVADURISMO; HISTORIA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136029&tab=opac&oai:flacso.org.ec:136029

Conflict analysis understanding causes, unlocking solutions
Provedor de dados: 121
Autores: Matthew Levinger; Levinger, Matthew.
Tipo: Text
Palavras-chave: CAUSA; PAZ.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=139711&tab=opac&oai:flacso.org.ec:139711

200 beneficios para ti
Provedor de dados: 121
Autores: Asamblea Nacional  del Ecuador.
Tipo: Text
Palavras-chave: LEYES; PODER LEGISLATIVOS; ASAMBLEA NACIONAL DEL ECUADOR; ECUADOR.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133388&tab=opac&oai:flacso.org.ec:133388

Regionalism
Provedor de dados: 121
Autores: Lombaerde, Philippe de.
Tipo: Text
Palavras-chave: REGIONALISMO; RELACIONES INTERNACIONALES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=139742&tab=opac&oai:flacso.org.ec:139742

Viaje
Provedor de dados: 121
Autores: Natasha Salguero Bravo; Salguero Bravo, Natasha.
Tipo: Text
Palavras-chave: LITERATURA; LITERATURA LATINOAMERICANA; LITERATURA ECUATORIANA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=137050&tab=opac&oai:flacso.org.ec:137050

Cuerpos, espacios y emociones aproximaciones desde las ciencias sociales
Provedor de dados: 121
Tipo: Text
Palavras-chave: CIENCIAS SOCIALES; TERRITORIO; TRANSNACIONALIDAD.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132781&tab=opac&oai:flacso.org.ec:132781

Antes de volver al silencio
Provedor de dados: 121
Tipo: Text
Palavras-chave: LITERATURA; LITERATURA LATINOAMERICANA; LITERATURA ECUATORIANA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=137047&tab=opac&oai:flacso.org.ec:137047

Inequality, grievances, and civil war
Provedor de dados: 121
Autores: Lars-Erik Cederman; Kristian Skrede Gleditsch y Halvard Buhaug; Cederman, Lars-Erik.
Tipo: Text
Palavras-chave: GUERRA CIVIL; DESIGUALDAD; ASPECTO SOCIAL.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=139716&tab=opac&oai:flacso.org.ec:139716

Quito eterno y Quito moderno
Provedor de dados: 121
Tipo: Text
Palavras-chave: ARQUITECTURA; EDIFICIOS.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133702&tab=opac&oai:flacso.org.ec:133702

Ecuador made in China
Provedor de dados: 121
Autores: Fernando Villavicencio V.; Villavicencio V., Fernando.
Tipo: Text
Palavras-chave: NEGOCIOS; RELACIONES INTERNACIONALES; PETROCHINA; ECUADOR; CONFLICTOS SOCIALES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135995&tab=opac&oai:flacso.org.ec:135995

Routledge handbook of public policy
Provedor de dados: 121
Autores: ed. por Eduardo Araralo ...[et al.].
Tipo: Text
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133994&tab=opac&oai:flacso.org.ec:133994

To overcome oneself the jesuit ethic and spirit of global expansion, 1520-1767
Provedor de dados: 121
Autores: J. Michelle Molina; Molina, J. Michelle.
Tipo: Text
Palavras-chave: ASPECTOS RELIGIOSOS; JESUITAS; CRISTIANISMO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136813&tab=opac&oai:flacso.org.ec:136813

Lexikon of the hispanic baroque transatlantic exchange and transformation
Provedor de dados: 121
Autores: ed. por Evonne Levy y Kenneth Mills.
Tipo: Text
Palavras-chave: HISTORIA ANTIGUA; BARROCO; CULTURA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136469&tab=opac&oai:flacso.org.ec:136469

La provincia semanario informativo : 1963-1964 [Riobamba]
Provedor de dados: 121
Tipo: Text
Palavras-chave: PERIODICO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135148&tab=opac&oai:flacso.org.ec:135148

Entre el poder, el cambio y el orden social en la Nueva Granada colonial estudios de caso
Provedor de dados: 121
Tipo: Text
Palavras-chave: HISTORIA; CONFLICTOS SOCIALES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133525&tab=opac&oai:flacso.org.ec:133525

The nutrition transition in Ecuador an ethnographic approach to diet and diabetes
Provedor de dados: 121
Autores: Anne Marie Dirocco; Dirocco, Anne Marie  *.
Tipo: Text
Palavras-chave: FAMILIA; ENFERMEDADES; DIABETES; ECUADOR; TESIS.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132397&tab=opac&oai:flacso.org.ec:132397

Hungry for change farmers, food justice and the agrarian question
Provedor de dados: 121
Autores: A. Haroon Akram-Lodhi; Akram-Lodhi, A. Haroon.
Tipo: Text
Palavras-chave: INDUSTRIA ALIMENTARIA; SUMINISTRO DE ALIMENTOS; AGRICULTURA; ASPECTOS SOCIALES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132263&tab=opac&oai:flacso.org.ec:132263

Art and queer culture
Provedor de dados: 121
Autores: por Catherine Lord y Richard Meyer; Lord, Catherine.
Tipo: Text
Palavras-chave: ARTE; CULTURA; SEXUALIDAD; HOMOSEXUALES; ASPECTOS SOCIALES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132303&tab=opac&oai:flacso.org.ec:132303

Los derechos sociales en el estado constitucional
Provedor de dados: 121
Tipo: Text
Palavras-chave: DERECHOS CONSTITUCIONALES; DERECHOS HUMANOS; DERECHO CIVIL; DERECHOS SOCIALES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=137160&tab=opac&oai:flacso.org.ec:137160

Kuru sorcery disease and danger in the New Guinea Highlands
Provedor de dados: 121
Autores: Shirley Lindenbaum; Lindenbaum, Shirley.
Tipo: Text
Palavras-chave: GRUPOS RACIALES; ENFERMEDAD; MEDICINA TRADICIONAL; ASPECTOS SOCIALES; KURU; NUEVA GUINEA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134173&tab=opac&oai:flacso.org.ec:134173

De verde a Maduro el sucesor de Hugo Chavez
Provedor de dados: 121
Autores: Roger Santodomingo; Santodomingo, Roger.
Tipo: Text
Palavras-chave: VENEZUELA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132218&tab=opac&oai:flacso.org.ec:132218

Introduction to dynamic macroeconomic general equilibrium models
Provedor de dados: 121
Tipo: Text
Palavras-chave: ECUACIONES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=138220&tab=opac&oai:flacso.org.ec:138220

"Lejos de tus pupilas" Familias transnacionales, cuidados y desigualdad social en Ecuador
Provedor de dados: 121
Autores: Gioconda Herrera Mosquera; Herrera Mosquera, Gioconda.
Tipo: Text
Palavras-chave: ASPECTOS SOCIALES; FAMILIA; DESIGUALDAD SOCIAL; MUJERES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=131833&tab=opac&oai:flacso.org.ec:131833

Masculinidades posibles, otras formas de ser hombres
Provedor de dados: 121
Tipo: Text
Palavras-chave: HOMBRES; MUJERES; CULTURA; ASPECTOS SOCIALES; DEMOCRACIA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133730&tab=opac&oai:flacso.org.ec:133730

The human tradition in colonial Latin America
Provedor de dados: 121
Autores: ed. por Kenneth J. Andrien.
Tipo: Text
Palavras-chave: AMERICA LATINA; HISTORIA; CONDICIONES SOCIALES; CONFLICTOS SOCIALES; COLONIA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134325&tab=opac&oai:flacso.org.ec:134325

David Smith
Provedor de dados: 121
Autores: Joan Pachner; Pachner, Joan.
Tipo: Text
Palavras-chave: ESCULTURA; ESCULTORES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132272&tab=opac&oai:flacso.org.ec:132272

Art cities of the future 21st Century Avant - Gardes
Provedor de dados: 121
Autores: Kaelen Wilson-Goldie ... [et. al.]; Wilson-Goldie, Kaelen.
Tipo: Text
Palavras-chave: ARTE; EXPOSICIONES; ARTISTAS; CIUDADES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134214&tab=opac&oai:flacso.org.ec:134214

El tiempo, 1966 noviembre-diciembre
Provedor de dados: 121
Tipo: Text
Palavras-chave: PERIODICO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135089&tab=opac&oai:flacso.org.ec:135089

Lucha de sangre el ascenso de las naciones indias modernas
Provedor de dados: 121
Autores: Charles Wilkinson; Wilkinson, Charles.
Tipo: Text
Palavras-chave: HISTORIA; LITERATURA ESTADOUNIDENSE; INDIOS AMERICANOS; ESTADOS UNIDOS.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134227&tab=opac&oai:flacso.org.ec:134227

Aproximaciones a una nueva arquitectura financiera regional el caso del Banco del Sur
Provedor de dados: 121
Tipo: Text
Palavras-chave: FINANZAS INTERNACIONALES; RELACIONES INTERNACIONALES; INSTITUCIONES FINANCIERAS INTERNACIONALES; TESIS.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=131122&tab=opac&oai:flacso.org.ec:131122

Aproximaciones a la identidad latinoamericana
Provedor de dados: 121
Autores: Juan Acha Valdivieso; Acha Valdivieso, Juan.
Tipo: Text
Palavras-chave: IDENTIDAD CULTURAL; CONDICIONES CULTURALES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=137165&tab=opac&oai:flacso.org.ec:137165

El Ecuador en Chicago, 1893-1894, [Guayaquil]
Provedor de dados: 121
Autores: publyshed by the Diario de avisos.
Tipo: Text
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135125&tab=opac&oai:flacso.org.ec:135125

Las leyes sociales
Provedor de dados: 121
Autores: Gabriel Tarde; Tarde, Gabriel.
Tipo: Text
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=137540&tab=opac&oai:flacso.org.ec:137540

Sistemas urbanos entre lo contextual y lo autorreferncial
Provedor de dados: 121
Tipo: Text
Palavras-chave: URBANISMO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=137247&tab=opac&oai:flacso.org.ec:137247

El tiempo, 1968 noviembre-diciembre
Provedor de dados: 121
Tipo: Text
Palavras-chave: PERIODICO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135101&tab=opac&oai:flacso.org.ec:135101

Eloy Alfaro y Cuba en el siglo XIX
Provedor de dados: 121
Tipo: Text
Palavras-chave: HISTORIA; PARTIDO REVOLUCIONARIO CUBANO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133531&tab=opac&oai:flacso.org.ec:133531

Imaginero the image man
Provedor de dados: 121
Tipo: MovingImage
Palavras-chave: CATOLICISMO; ARTE; PINTURA; ESCULTURA; CAMBIO CULTURAL; AMERINDIO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134374&tab=opac&oai:flacso.org.ec:134374

En tono menor debates sobre cultura y representaciones en Cartagena (1979-1982)
Provedor de dados: 121
Autores: Cielo Patricia Puello Sarabia ... [et al.].
Tipo: Text
Palavras-chave: CULTURA; VIDA SOCIAL.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132832&tab=opac&oai:flacso.org.ec:132832

The language of contention revolutions in words, 1688-2012
Provedor de dados: 121
Autores: Sidney Tarrow; Tarrow, Sidney.
Tipo: Text
Palavras-chave: MOVIMIENTOS SOCIALES; LENGUAJES; REVOLUCIONES; SIGLO XVII; CONFLICTOS SOCIALES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135917&tab=opac&oai:flacso.org.ec:135917

Movimiento campesino en el sur de Santander una lucha por el acceso a la modernidad
Provedor de dados: 121
Autores: Julio Mario Palacios Urueta; Palacios Urueta, Julio Mario.
Tipo: Text
Palavras-chave: MOVIMIENTOS SOCIALES; MOVIMIENTOS CAMPESINOS; CULTURA; COSTUMBRES Y TRADICIONES; SANTANDER; COLOMBIA; TESIS.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134057&tab=opac&oai:flacso.org.ec:134057

Resilience in ecology and urban design linking theory and practice for sustainable cities
Provedor de dados: 121
Autores: ed. por S.T.A. Pickett, M.L. Cadenasso y Brian McGrath.
Tipo: Text
Palavras-chave: DESARROLLO SOSTENIBLE.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134303&tab=opac&oai:flacso.org.ec:134303

Themes of contemporary art visual art after 1980
Provedor de dados: 121
Autores: Jean Robertson y Craig McDaniel; Robertson, Jean.
Tipo: Text
Palavras-chave: ARTE MODERNO; IDENTIDAD; ARTE.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134733&tab=opac&oai:flacso.org.ec:134733

Mujeres Nasa tejedoras de vida y de resistencia
Provedor de dados: 121
Tipo: Text
Palavras-chave: MUJERES; MOVIMIENTOS SOCIALES; COMUNIDAD NASA; CAUCA; COLOMBIA; TESIS.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132536&tab=opac&oai:flacso.org.ec:132536

Cesado el nombre
Provedor de dados: 121
Tipo: Text
Palavras-chave: LITERATURA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133891&tab=opac&oai:flacso.org.ec:133891

Food and culture a reader
Provedor de dados: 121
Autores: ed. por Carole Counihan y Penny Vann Esterik.
Tipo: Text
Palavras-chave: COSTUMBRES; CULTURA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133492&tab=opac&oai:flacso.org.ec:133492

Subterranean struggles new dynamics of mining, oil, and gas in Latin America
Provedor de dados: 121
Autores: ed. por Anthony Bebbington y Jeffrey Bury.
Tipo: Text
Palavras-chave: MINAS; RECURSOS MINERALES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136379&tab=opac&oai:flacso.org.ec:136379

Saber de los umbrales Walter Banjamin y el pasaje del mito
Provedor de dados: 121
Autores: Winfried Menninghaus; Menninghaus, Winfried.
Tipo: Text
Palavras-chave: MITO; LITERATURA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=139167&tab=opac&oai:flacso.org.ec:139167

De la libertad
Provedor de dados: 121
Autores: John Stuart Mill; Mill, John Stuart.
Tipo: Text
Palavras-chave: LIBERTAD; DERECHOS DE LAS MUJERES; IGUALDAD; SOCIALISMO; ASPECTOS SOCIALES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133027&tab=opac&oai:flacso.org.ec:133027

Palestine and the Arab-Israeli conflict a history with documents
Provedor de dados: 121
Autores: Charles D. Smith; Smith, Charles D.
Tipo: Text
Palavras-chave: GUERRA; CONFLICTOS INTERNACIONALES; FRONTERAS.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132115&tab=opac&oai:flacso.org.ec:132115

World of our making rules and rule in social theory and international relations
Provedor de dados: 121
Autores: Nicholas Greenwood Onuf; Onuf, Nicholas Greenwood.
Tipo: Text
Palavras-chave: RELACIONES INTERNACIONALES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=11490&tab=opac&oai:flacso.org.ec:11490

If it's purple, someone's gonna die the power of color in visual storytelling
Provedor de dados: 121
Autores: Patti Bellantoni; Bellantoni, Patti.
Tipo: Text
Palavras-chave: CINE; COLOR.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132341&tab=opac&oai:flacso.org.ec:132341

Globalisation, economic transition and the environment forging a path to sustainable development
Provedor de dados: 121
Autores: ed. por Philip Lawn.
Tipo: Text
Palavras-chave: DESARROLLO SOSTENIBLE; MEDIO AMBIENTE; ASPECTOS AMBIENTALES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133958&tab=opac&oai:flacso.org.ec:133958

Next generation wirless LANs 802.11n and 802.11ac
Provedor de dados: 121
Autores: Eldad Perahia y Robert Stacey; Perahia, Eldad.
Tipo: Text
Palavras-chave: INGENIERIA; INGENIERIA DE COMUNICACIONES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=139195&tab=opac&oai:flacso.org.ec:139195

Never let a serious crisis go to waste how neoliberalism survived the financial meltdown
Provedor de dados: 121
Autores: Philip Mirowski; Mirowski, Philip.
Tipo: Text
Palavras-chave: NEOLIBERALISMO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132699&tab=opac&oai:flacso.org.ec:132699

Encuentro Internacional Drogas, usos y prevenciones Mayo 2012
Provedor de dados: 121
Autores: ed. por Rodrigo Tenorio Ambrossi.
Tipo: Text
Palavras-chave: DROGA; ASPECTOS SOCIALES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132907&tab=opac&oai:flacso.org.ec:132907

Talons of the eagle Latin America, the United States, and the world
Provedor de dados: 121
Autores: Peter H. Smith; Smith, Peter H.
Tipo: Text
Palavras-chave: RELACIONES INTERNACIONALES; RELACIONES EXTERIORES; IMPERIALISMO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=139780&tab=opac&oai:flacso.org.ec:139780

Racial subordination in Latin America the role of the state, customary law, and the new civil rights response
Provedor de dados: 121
Tipo: Text
Palavras-chave: AFRODESCENDIENTES; BRASIL.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=130391&tab=opac&oai:flacso.org.ec:130391

Political science research methods in action
Provedor de dados: 121
Autores: ed. por Michael Bruter y Martin Lodge.
Tipo: Text
Palavras-chave: HISTORIA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=138880&tab=opac&oai:flacso.org.ec:138880

Consejo de Santo Domingo
Provedor de dados: 121
Tipo: Text
Palavras-chave: MUJERES; SEXUALIDAD; VIOLENCIA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=138947&tab=opac&oai:flacso.org.ec:138947

Fronteras rupturas y convergencias
Provedor de dados: 121
Tipo: Text
Palavras-chave: TERRITORIO; FRONTERA; SEGURIDAD; DELINCUENCIA; ACUERDOS INTERNACIONALES; MERCOSUR.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133036&tab=opac&oai:flacso.org.ec:133036

Margaret Bourke-White momentos de la historia
Provedor de dados: 121
Autores: Margaret Bourke-White; Bourke-White, Margaret.
Tipo: Text
Palavras-chave: EXPOSICIONES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132586&tab=opac&oai:flacso.org.ec:132586

Voladoras la red invisible del relato
Provedor de dados: 121
Autores: Amaranta Pico; Pico, Amaranta.
Tipo: Text
Palavras-chave: LITERATURA ECUATORIANA; CULTURA DE MASAS; SIMBOLISMO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136193&tab=opac&oai:flacso.org.ec:136193

Nariz del diablo, 1922-1970
Provedor de dados: 121
Tipo: Text
Palavras-chave: TRANSPORTE FERROVIARIO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135145&tab=opac&oai:flacso.org.ec:135145

Vitamin D2 new perspectives in drawing
Provedor de dados: 121
Autores: ed. por Craig Garrett.
Tipo: Text
Palavras-chave: DIBUJO; ARTE.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134467&tab=opac&oai:flacso.org.ec:134467

Magnificent delusions Pakistan, the United States, and an epic history of misunderstanding
Provedor de dados: 121
Autores: Husain Haqqani; Haqqani, Husain.
Tipo: Text
Palavras-chave: RELACIONES EXTERIORES; TERRORISMO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=137154&tab=opac&oai:flacso.org.ec:137154

Los verdes somos los nuevos rojos una mirada desde el interior de un movimiento social acosado
Provedor de dados: 121
Autores: Will Potter; Potter, Will.
Tipo: Text
Palavras-chave: ECOLOGISMO; TERRORISMO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=138566&tab=opac&oai:flacso.org.ec:138566

Images that move
Provedor de dados: 121
Autores: ed. por Patricia Spyer y Mary Margaret Steedly.
Tipo: Text
Palavras-chave: IMAGEN.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=137993&tab=opac&oai:flacso.org.ec:137993

Guano and the opening of the pacific world a global ecological history
Provedor de dados: 121
Autores: Gregory T. Cushman; Cushman, Gregory T.
Tipo: Text
Palavras-chave: COMERCIO; ASPECTOS SOCIALES; HISTORIA; GUANO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136653&tab=opac&oai:flacso.org.ec:136653

La historia cultural autores, obras, lugares
Provedor de dados: 121
Autores: JUsto Serna y Anaclet Pons; Serna, Justo.
Tipo: Text
Palavras-chave: CULTURA; HISTORIA CULTURAL.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=131898&tab=opac&oai:flacso.org.ec:131898

Anselm Kiefer
Provedor de dados: 121
Autores: Matthew Biro; Biro, Matthew.
Tipo: Text
Palavras-chave: PINTURA; PINTORES; ARTE POSMODERNO; NEOEXPRESIONISMO; ESCULTURA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132271&tab=opac&oai:flacso.org.ec:132271

La Diplomacia de las Cumbres retos y oportunidades de los nuevos regionalismos
Provedor de dados: 121
Tipo: Text
Palavras-chave: DIPLOMACIA; JEFES DE ESTADO; RELACIONES EXTERIORES; RELACIONES INTERNACIONALES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136799&tab=opac&oai:flacso.org.ec:136799

En busca de un lugar de la sociedad mundial la escuela inglesa y la corte penal internacional
Provedor de dados: 121
Tipo: Text
Palavras-chave: RELACIONES INTERNACIONALES; DESARROLLO; DEMOCRACIA; DERECHO PENAL; DERECHOS HUMANOS; ESTADO; TESIS.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=130887&tab=opac&oai:flacso.org.ec:130887

How to write better essays
Provedor de dados: 121
Autores: Bryan Greetham; Greetham, Bryan.
Tipo: Text
Palavras-chave: ENSAYOS.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=139394&tab=opac&oai:flacso.org.ec:139394

Para la tercera cultura ensayos sobre ciencias y humanidades
Provedor de dados: 121
Tipo: Text
Palavras-chave: CIENCIA; HISTORIA; HUMANIDADES; CIENCIA EXPERIMENTAL; CIENCIAS SOCIALES; CULTURA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135185&tab=opac&oai:flacso.org.ec:135185

Los derechos humanos en las sentencias de la corte interamericana sobre Honduras
Provedor de dados: 121
Tipo: Text
Palavras-chave: DERECHOS HUMANOS; DEMOCRACIA; PODER JUDICIAL; HONDURAS.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133373&tab=opac&oai:flacso.org.ec:133373

Historia del cooperativismo en el Ecuador
Provedor de dados: 121
Tipo: Text
Palavras-chave: COOPERATIVAS; ASPECTOS SOCIALES; FINANZAS.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132173&tab=opac&oai:flacso.org.ec:132173

En busca de Octavio Paz de la historia a "lo otro"
Provedor de dados: 121
Autores: Luis Alfonso Chiriboga; Chiriboga, Luis Alfonso.
Tipo: Text
Palavras-chave: LITERATURA ECUATORIANA; ECUADOR.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133928&tab=opac&oai:flacso.org.ec:133928

Escritos sobre el movimiento sindical
Provedor de dados: 121
Autores: Vicente Lombardo Toledano; Lombardo Toledano, Vicente.
Tipo: Text
Palavras-chave: MOVIMIENTO OBRERO; SINDICATOS; TRABAJADORES; HISTORIA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=137374&tab=opac&oai:flacso.org.ec:137374

La consigna es resistir
Provedor de dados: 121
Autores: Diego Oquendo; Oquendo, Diego.
Tipo: Text
Palavras-chave: PERIODISMO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=139247&tab=opac&oai:flacso.org.ec:139247

La industria aeroespacial complejidad productiva e institucional
Provedor de dados: 121
Tipo: Text
Palavras-chave: INDUSTRIA AEROESPACIAL; COMPETITIVIDAD.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134101&tab=opac&oai:flacso.org.ec:134101

Para nombrar ciertas cosas
Provedor de dados: 121
Tipo: Text
Palavras-chave: LITERATURA; LITERATURA LATINOAMERICANA; LITERATURA ECUATORIANA; LITERATURA COLOMBIANA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=137053&tab=opac&oai:flacso.org.ec:137053

Object and apparition envisioning the christian divine in the colonial Andes
Provedor de dados: 121
Autores: Maya Stanfield-Mazzi; Stanfield-Mazzi, Maya.
Tipo: Text
Palavras-chave: ARTE RELIGIOSO; CRISTIANISMO; ARTE COLONIAL; HISTORIA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136430&tab=opac&oai:flacso.org.ec:136430

Straying afloat risk and uncertainty in spanish atlantic world trade, 1760-1820
Provedor de dados: 121
Autores: Jeremy Baskes; Baskes, Jeremy.
Tipo: Text
Palavras-chave: COMERCIO; COMERCIO MUNDIAL; HISTORIA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136409&tab=opac&oai:flacso.org.ec:136409

Memorias de un triunfador
Provedor de dados: 121
Autores: Guerra Galarza, Ernesto.
Tipo: Text
Palavras-chave: DEPORTES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133939&tab=opac&oai:flacso.org.ec:133939

El tiempo, 1965 julio-agosto
Provedor de dados: 121
Tipo: Text
Palavras-chave: PERIODICO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135081&tab=opac&oai:flacso.org.ec:135081

La inquietud por la verdad escritos sobre la sexualidad y el sujeto
Provedor de dados: 121
Autores: Michel Foucault; Foucault, Michel.
Tipo: Text
Palavras-chave: SEXO; SEXUALIDAD.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134276&tab=opac&oai:flacso.org.ec:134276

Sociologie de la famille
Provedor de dados: 121
Autores: Segalen, Martine.
Tipo: Text
Palavras-chave: FAMILIAS; MATRIMONIO; PARENTESCO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=137223&tab=opac&oai:flacso.org.ec:137223

North american regional security a trilateral framework?
Provedor de dados: 121
Autores: Kilroy, Richard James, Jr.
Tipo: Text
Palavras-chave: SEGURIDAD NACIONAL; SEGURIDAD REGIONAL.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134190&tab=opac&oai:flacso.org.ec:134190

Migrant remittances and development in the global economy
Provedor de dados: 121
Autores: Manuel Orozco; Orozco, Manuel.
Tipo: Text
Palavras-chave: EMIGRANTES; INMIGRATES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134159&tab=opac&oai:flacso.org.ec:134159

El tiempo, 1966 julio-agosto
Provedor de dados: 121
Tipo: Text
Palavras-chave: PERIODICO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135087&tab=opac&oai:flacso.org.ec:135087

Imprerial debris on ruins and ruination
Provedor de dados: 121
Autores: ed. por Ann Laura Stoler.
Tipo: Text
Palavras-chave: POSCOLONIALISMO; ASPECTOS SOCIALES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=138588&tab=opac&oai:flacso.org.ec:138588

Escritos a la juventud
Provedor de dados: 121
Autores: Vicente Lombardo Toledano; Lombardo Toledano, Vicente.
Tipo: Text
Palavras-chave: JUVENTUD; ESCRITOS; CONGRESO; SOCIALISMO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=137348&tab=opac&oai:flacso.org.ec:137348

Eloy Alfaro y Cuba en el siglo XIX
Provedor de dados: 121
Tipo: Text
Palavras-chave: ECUADOR; HISTORIA; PARTIDO REVOLUCIONARIO CUBANO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134818&tab=opac&oai:flacso.org.ec:134818

Mi bufanda azul
Provedor de dados: 121
Tipo: Text
Palavras-chave: LITERATURA ECUATORIANA; NOVELA ECUATORIANA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=139481&tab=opac&oai:flacso.org.ec:139481

Media/democracy a comparative study
Provedor de dados: 121
Autores: ed. por Alec Charles.
Tipo: Text
Palavras-chave: DEMOCRACIA; LIBERTAD DE PRENSA; SOCIOLOGIA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134434&tab=opac&oai:flacso.org.ec:134434

El feminismo es un humanismo
Provedor de dados: 121
Tipo: Text
Palavras-chave: FEMINISMO; CONOCIMIENTO; DIFERENCIAS SEXUALES; CULTURA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=137572&tab=opac&oai:flacso.org.ec:137572

Diario de escritura
Provedor de dados: 121
Tipo: Text
Palavras-chave: LITERATURA ECUATORIANA; ECUADOR.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133274&tab=opac&oai:flacso.org.ec:133274

Memorias de un cadete recluta
Provedor de dados: 121
Autores: Nelson H. Salazar Ojeda; Salazar Ojeda, Nelson H.
Tipo: Text
Palavras-chave: HISTORIA; MILITARISMO; ECUADOR.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135167&tab=opac&oai:flacso.org.ec:135167

The fundamentals of political science research
Provedor de dados: 121
Autores: Paul M. Kellstedt y Guy D. Whitten; Kellstedt, Paul M.
Tipo: Text
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134499&tab=opac&oai:flacso.org.ec:134499

Lara Almarcegui
Provedor de dados: 121
Autores: Lara Almarcegui; Almarcegui, Lara.
Tipo: Text
Palavras-chave: ARTE MODERNO; ARTISTA; EXPOSICIONES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133138&tab=opac&oai:flacso.org.ec:133138

Promotional culture and convergence markets, methods, media
Provedor de dados: 121
Autores: ed. por Helen Powell.
Tipo: Text
Palavras-chave: PUBLICIDAD; MARKETING; INTERNET; CULTURA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134431&tab=opac&oai:flacso.org.ec:134431

El retrato de Dorian Gray
Provedor de dados: 121
Autores: Oscar Wilde; Wilde, Oscar.
Tipo: Text
Palavras-chave: LITERATURA IRLANDESA; NOVELA; LITERATURA INGLESA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136570&tab=opac&oai:flacso.org.ec:136570

Abraradabrante
Provedor de dados: 121
Tipo: Text
Palavras-chave: LITERATURA ECUATORIANA; NARRATIVA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133936&tab=opac&oai:flacso.org.ec:133936

La OTAN, brazo ejecutor del Consejo de Seguridad
Provedor de dados: 121
Autores: Estefany Carolina Viscarra Andrade; Viscarra Andrade, Estefany Carolina.
Tipo: Text
Palavras-chave: CONFLICTOS ARMADOS; RELACIONES INTERNACIONALES; SEGURIDAD INTERNACIONAL; TESIS.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=131166&tab=opac&oai:flacso.org.ec:131166

La metida de mano en la justicia
Provedor de dados: 121
Tipo: Text
Palavras-chave: PODERES DEL ESTADO; ECUADOR.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=130994&tab=opac&oai:flacso.org.ec:130994

Derechos de la naturaleza fundamentos, contenido y exigibilidad jurisdiccional
Provedor de dados: 121
Tipo: Text
Palavras-chave: DERECHO AMBIENTAL; DERECHO CONSTITUCIONAL; NATURALEZA; ECUADOR.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134639&tab=opac&oai:flacso.org.ec:134639

El trabajo de las sociedades
Provedor de dados: 121
Tipo: Text
Palavras-chave: MOVIMIENTOS SOCIALES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135987&tab=opac&oai:flacso.org.ec:135987

El laboratorio del miedo una historia general del terrorismo, de los sicarios a Al Qa'ida
Provedor de dados: 121
Tipo: Text
Palavras-chave: TERRORISMO; HISTORIA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132674&tab=opac&oai:flacso.org.ec:132674

Strategies for comparative research in political science
Provedor de dados: 121
Autores: Guy B. Peters; Peters, Guy B.
Tipo: Text
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133992&tab=opac&oai:flacso.org.ec:133992

Otros saberes collaborative research on indigenous and afro-descendant cultural politics
Provedor de dados: 121
Autores: ed. por Charles R. Hale y Lynn Stephen.
Tipo: Text
Palavras-chave: AFRODESCENDIENTES; MOVIMIENTOS SOCIALES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134312&tab=opac&oai:flacso.org.ec:134312

Vivir en la raya
Provedor de dados: 121
Autores: Rogelio Naranjo; Naranjo, Rogelio.
Tipo: Text
Palavras-chave: ARTE; DIBUJO; CARICATURAS; HUMORISMO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133143&tab=opac&oai:flacso.org.ec:133143

Deseo y tierra
Provedor de dados: 121
Tipo: Text
Palavras-chave: LITERATURA; LITERATURA LATINOAMERICANA; LITERATURA ECUATORIANA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=137048&tab=opac&oai:flacso.org.ec:137048

Fronteras culturales, alteridad y violencia
Provedor de dados: 121
Autores: comp. por Miguel Olmos Aguilera.
Tipo: Text
Palavras-chave: VIOLENCIA; FRONTERAS; ASPECTOS SOCIALES; CULTURA; IDENTIDAD.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=138622&tab=opac&oai:flacso.org.ec:138622

Ensayos sobre los griegos
Provedor de dados: 121
Autores: Friedrich Nietzsche; Nietzsche, Friedrich.
Tipo: Text
Palavras-chave: CULTURA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132980&tab=opac&oai:flacso.org.ec:132980

Wild art
Provedor de dados: 121
Autores: David Carrier; Joachim Pissarro; Carrier, David.
Tipo: Text
Palavras-chave: ARTE.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134208&tab=opac&oai:flacso.org.ec:134208

El tiempo, 1968 julio-agosto
Provedor de dados: 121
Tipo: Text
Palavras-chave: PERIODICO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135099&tab=opac&oai:flacso.org.ec:135099

La viuda de El Tejar el poder del mal
Provedor de dados: 121
Autores: Jorge Bastidas Zea; Bastidas Zea, Jorge.
Tipo: MovingImage
Palavras-chave: CINE; LEYENDA; DRAMA; TERROR; QUITO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136330&tab=opac&oai:flacso.org.ec:136330

La moneda develada por sus crisis
Provedor de dados: 121
Tipo: Text
Palavras-chave: MONEDA; HISTORIA; CRISIS FINANCIERA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=137126&tab=opac&oai:flacso.org.ec:137126

Digital dilemmas power, resistance, and the internet
Provedor de dados: 121
Autores: M. I. Franklin; Franklin, M. I.
Tipo: Text
Palavras-chave: MEDIOS MASIVOS; INTERNET; CULTURA; DERECHOS HUMANOS.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136382&tab=opac&oai:flacso.org.ec:136382

No son tiempos de callar
Provedor de dados: 121
Tipo: Text
Palavras-chave: PERIODISMO; DERECHO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=131068&tab=opac&oai:flacso.org.ec:131068

El tiempo, 1967 septiembre-octubre
Provedor de dados: 121
Tipo: Text
Palavras-chave: PERIODICO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135094&tab=opac&oai:flacso.org.ec:135094

El viajero y su sombra
Provedor de dados: 121
Autores: Friedrich Nietzsche; Nietzsche, Friedrich.
Tipo: Text
Palavras-chave: HUMANISMO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136576&tab=opac&oai:flacso.org.ec:136576

El tiempo, 1965 mayo-junio
Provedor de dados: 121
Tipo: Text
Palavras-chave: PERIODICO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135080&tab=opac&oai:flacso.org.ec:135080

Los rituales funerarios en la comunidad de Zuleta
Provedor de dados: 121
Tipo: Text
Palavras-chave: COSTUMBRES Y TRADICIONES; RITUALES; MUERTE; ZULETA; TESIS.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133831&tab=opac&oai:flacso.org.ec:133831

El tiempo, 1966 marzo-abril
Provedor de dados: 121
Tipo: Text
Palavras-chave: PERIODICO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135085&tab=opac&oai:flacso.org.ec:135085

The tyranny of experts economists, dictators, and the forgotten rights of the poor
Provedor de dados: 121
Autores: William Easterly; Easterly, William.
Tipo: Text
Palavras-chave: POBREZA; CAUSA Y EFECTO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=137157&tab=opac&oai:flacso.org.ec:137157

Chris Marker inmemoria
Provedor de dados: 121
Tipo: Text
Palavras-chave: CINE.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=138465&tab=opac&oai:flacso.org.ec:138465

LAC Informe semestral
Provedor de dados: 121
Autores: Banco Mundial.
Tipo: Text
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134147&tab=opac&oai:flacso.org.ec:134147

El facilitador
Provedor de dados: 121
Autores: Arregui, Victor.
Tipo: MovingImage
Palavras-chave: CINE.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134726&tab=opac&oai:flacso.org.ec:134726

El malestar de la democracia
Provedor de dados: 121
Autores: Carlo Galli; Galli, Carlo.
Tipo: Text
Palavras-chave: DEMOCRACIA; DERECHO; SISTEMA SOCIAL.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135953&tab=opac&oai:flacso.org.ec:135953

Governing indigenous territories enacting sovereignty in the ecuadorian amazon
Provedor de dados: 121
Autores: Juliet S. Erazo; Erazo, Juliet S.
Tipo: Text
Palavras-chave: GOBIERNO; ECUADOR.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134484&tab=opac&oai:flacso.org.ec:134484

Clandestine politiacal violence
Provedor de dados: 121
Autores: Donatella Della Porta; Della Porta, Donatella, 1956-.
Tipo: Text
Palavras-chave: MOVIMIENTOS SOCIALES; VIOLENCIA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=140212&tab=opac&oai:flacso.org.ec:140212

Los alfareros golondrinos productores itinerantes en los Andes
Provedor de dados: 121
Tipo: Text
Palavras-chave: ARTE.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134126&tab=opac&oai:flacso.org.ec:134126

International relations and world politics
Provedor de dados: 121
Autores: Paul R. Viotti; Mark V. Kauppi.; Viotti, Paul R.
Tipo: Text
Palavras-chave: RELACIONES INTERNACIONALES; HISTORIA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=9794&tab=opac&oai:flacso.org.ec:9794

Huellas imperiales de la crisis de 1929 al presidente negro
Provedor de dados: 121
Autores: comp. por Pablo Pozzi y Fabio Nigra.
Tipo: Text
Palavras-chave: HISTORIA; SIGLO XX.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134171&tab=opac&oai:flacso.org.ec:134171

The Oxford handbook of political psychology
Provedor de dados: 121
Autores: ed. por Leonie Huddy; David O. Sears y Jack S. Levy.
Tipo: Text
Palavras-chave: DEMOCRACIA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136002&tab=opac&oai:flacso.org.ec:136002

Figuras de la historia
Provedor de dados: 121
Tipo: Text
Palavras-chave: CINE; HISTORIA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133942&tab=opac&oai:flacso.org.ec:133942

Anales de la Universidad Central del Ecuador, 1935-1938
Provedor de dados: 121
Tipo: Text
Palavras-chave: UNIVERSIDAD; DERECHO; MEDICINA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135108&tab=opac&oai:flacso.org.ec:135108

What kinship is-and is not
Provedor de dados: 121
Autores: Marshall Sahlins; Sahlins, Marshall.
Tipo: Text
Palavras-chave: PARENTESCO; CULTURA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=137945&tab=opac&oai:flacso.org.ec:137945

Anales de la Universidad Central del Ecuador, 1939-1946
Provedor de dados: 121
Tipo: Text
Palavras-chave: UNIVERSIDAD.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135109&tab=opac&oai:flacso.org.ec:135109

The state of freedom a social history of the british state since 1800
Provedor de dados: 121
Autores: Patrick Joyce; Joyce, Patrick.
Tipo: Text
Palavras-chave: ASPECTOS SOCIALES; CONDICIONES SOCIALES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=140193&tab=opac&oai:flacso.org.ec:140193

Andy Warhol
Provedor de dados: 121
Autores: Joseph D. Ketner; Ketner, Joseph D.
Tipo: Text
Palavras-chave: PINTURA; PINTORES; ARTE POP.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132273&tab=opac&oai:flacso.org.ec:132273

Biocapitalismo, procesos de gobierno y movimientos sociales
Provedor de dados: 121
Autores: comp. por Mauro Cerbino e Isabella Giunta.
Tipo: Text
Palavras-chave: CAPITALISMO; BIOCAPITALISMO; MOVIMIENTOS SOCIALES; NEOLIBERALISMO; ECUADOR.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132130&tab=opac&oai:flacso.org.ec:132130

Proporcionalidad y constitucionalismo un enfoque comparativo global
Provedor de dados: 121
Autores: Alec Stone Sweet y Jud Matthews; Stone Sweet, Alec.
Tipo: Text
Palavras-chave: DERECHO CONSTITUCIONAL; DERECHOS HUMANOS; CONSTITUCIONALISMO; PRINCIPIO DE PROPORCIONALIDAD.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132412&tab=opac&oai:flacso.org.ec:132412

Religion and state formation in postrevolutionary Mexico
Provedor de dados: 121
Autores: Ben Fallaw; Fallaw, Ben.
Tipo: Text
Palavras-chave: ASPECTOS SOCIALES; ESTADO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135977&tab=opac&oai:flacso.org.ec:135977

Identidad y pensamiento latinoamericano
Provedor de dados: 121
Tipo: Text
Palavras-chave: IDENTIDAD; IDENTIDAD CULTURAL; HISTORIA; LATINOAMERICA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135365&tab=opac&oai:flacso.org.ec:135365

El tiempo, 1968 enero-febrero
Provedor de dados: 121
Tipo: Text
Palavras-chave: PERIODICO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135096&tab=opac&oai:flacso.org.ec:135096

Tansitions and non-transitions  from communism regime survival in China, Cuba, North Korea, and Vietnam
Provedor de dados: 121
Autores: Steven Saxonberg; Saxonberg, Steven.
Tipo: Text
Palavras-chave: COMUNISMO; ASIA; EUROPA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132116&tab=opac&oai:flacso.org.ec:132116

Economic growth in an open developing economy the role of structure and demand
Provedor de dados: 121
Autores: A.P. Thirlwall; Thirlwall, A.P.
Tipo: Text
Palavras-chave: DEMANDA; COMERCIO; POBREZA; DESIGUALDAD.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133006&tab=opac&oai:flacso.org.ec:133006

Strategic narratives communication power and the new world order
Provedor de dados: 121
Autores: Alister Miskimmon; Miskimmon, Alister.
Tipo: Text
Palavras-chave: RELACIONES INTERNACIONALES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136403&tab=opac&oai:flacso.org.ec:136403

Utolands
Provedor de dados: 121
Autores: Luis Alberto Bravo; Bravo, Luis Alberto.
Tipo: Text
Palavras-chave: LITERATURA ECUATORIANA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133739&tab=opac&oai:flacso.org.ec:133739

El contrato social
Provedor de dados: 121
Autores: Jean Jacques Rousseau; Rousseau, Jean Jacques.
Tipo: Text
Palavras-chave: SOCIEDAD; ESTADO; GOBIERNO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136577&tab=opac&oai:flacso.org.ec:136577

Conflict assessment &amp; peacebuilding planning toward a participatory approach to human security
Provedor de dados: 121
Autores: Lisa Schirch; Schirch, Lisa.
Tipo: Text
Palavras-chave: PAZ; SEGURIDAD HUMANA; SEGURIDAD.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=139712&tab=opac&oai:flacso.org.ec:139712

The World Bank annual report 2013
Provedor de dados: 121
Autores: The World Bank.
Tipo: Text
Palavras-chave: POBREZA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135837&tab=opac&oai:flacso.org.ec:135837

Girls, women, and crime selected readings
Provedor de dados: 121
Autores: ed. por Meda Chesney-Lind y Lisa Pasko.
Tipo: Text
Palavras-chave: DELINCUENCIA; MUJERES; FEMINISMO; DELINCUENCIA JUVENIL.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=138623&tab=opac&oai:flacso.org.ec:138623

De este lado del tiempo
Provedor de dados: 121
Tipo: Text
Palavras-chave: LITERATURA; LITERATURA LATINOAMERICANA; LITERATURA ECUATORIANA; LITERATURA MEXICANA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=137049&tab=opac&oai:flacso.org.ec:137049

Manual de justicia constitucional ecuatoriana
Provedor de dados: 121
Tipo: Text
Palavras-chave: DERECHO CONSTITUCIONAL; ECUADOR.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134272&tab=opac&oai:flacso.org.ec:134272

Diez lecciones sobre estudios culturales
Provedor de dados: 121
Tipo: Text
Palavras-chave: ESTUDIOS CULTURALES; CULTURA; SOCIEDAD; MARXISMO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=137178&tab=opac&oai:flacso.org.ec:137178

El tiempo, 1968 marzo-abril
Provedor de dados: 121
Tipo: Text
Palavras-chave: PERIODICO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135097&tab=opac&oai:flacso.org.ec:135097

Mentiras principales
Provedor de dados: 121
Tipo: Text
Palavras-chave: PERIODISMO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=138357&tab=opac&oai:flacso.org.ec:138357

La industria cultural
Provedor de dados: 121
Autores: Adorno, Theodor, 1903-1969.
Tipo: Text
Palavras-chave: INDUSTRIA CULTURAL; CULTURA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=139910&tab=opac&oai:flacso.org.ec:139910

Aproximaciones a la frontera
Provedor de dados: 121
Tipo: Text
Palavras-chave: SEGURIDAD CIUDADANA; FRONTERAS; VILENCIA; DESPLAZAMIENTO FORZADO; DERECHOS HUMANOS.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=131275&tab=opac&oai:flacso.org.ec:131275

II Congreso internacional de cultura libre
Provedor de dados: 121
Autores: FLACSO.
Tipo: Text
Palavras-chave: PROPIEDAD INTELECTUAL; DERECHOS DE AUTOR; DERECHOS CONEXOS.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135845&tab=opac&oai:flacso.org.ec:135845

El tiempo, 1967 mayo-junio
Provedor de dados: 121
Tipo: Text
Palavras-chave: PERIODICO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135092&tab=opac&oai:flacso.org.ec:135092

No exit from Pakistan America's tortured relationship with Islamabad
Provedor de dados: 121
Autores: Daniel S. Markey; Markey, Daniel S.
Tipo: Text
Palavras-chave: RELACIONES EXTERIORES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=137232&tab=opac&oai:flacso.org.ec:137232

El mundo que he vivido memorias de diplomacia, de episodios y de gente
Provedor de dados: 121
Autores: Diego Cordovez; Cordovez, Diego.
Tipo: Text
Palavras-chave: DIPLOMACIA; RELACIONES INTERNACIONALES; MEMORIAS; ECUADOR.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132088&tab=opac&oai:flacso.org.ec:132088

Global environmental history an introductory reader
Provedor de dados: 121
Autores: ed. por J. R. McNeill; Alan Roe.
Tipo: Text
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=131546&tab=opac&oai:flacso.org.ec:131546

Leviathan
Provedor de dados: 121
Autores: a film by Lucien Castaing-Taylor and Verena Paravel; Castaing-Taylor, Lucien.
Tipo: MovingImage
Palavras-chave: DOCUMENTAL; PESCA MARINA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134771&tab=opac&oai:flacso.org.ec:134771

Between creativity and norm-making tensions in the early modern era
Provedor de dados: 121
Tipo: Text
Palavras-chave: HISTORIA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=137604&tab=opac&oai:flacso.org.ec:137604

Los adolescentes del siglo XXI los consumos culturales en un mundo de pantallas
Provedor de dados: 121
Autores: Roxana Morduchowicz; Morduchowicz, Roxana.
Tipo: Text
Palavras-chave: ADOLESCENTES; IDENTIDAD; CULTURA JUVENIL.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134454&tab=opac&oai:flacso.org.ec:134454

How forests think toward an anthropology beyond the human
Provedor de dados: 121
Autores: Eduardo Kohn; Kohn, Eduardo.
Tipo: Text
Palavras-chave: BOSQUES; INDIOS QUECHUA; ASPECTOS SOCIALES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134201&tab=opac&oai:flacso.org.ec:134201

Comuneros, pescadores, defensores del territorio el caso de la comuna de Engabao provincia del Guayas, Ecuador
Provedor de dados: 121
Autores: Libertad Gills Arana; Gills Arana, Libertad.
Tipo: Text
Palavras-chave: PUERTO PESQUERO DE ENGABAO; GUAYAS; ECUADOR; TESIS.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132530&tab=opac&oai:flacso.org.ec:132530

The Ashgate research companion to women and gender in early modern Europe
Provedor de dados: 121
Autores: ed. por Allyson M. Poska, Jane Couchman y Katherine A. McIver.
Tipo: Text
Palavras-chave: MUJERES; CONDICIONES SOCIALES; ROLES SEXUALES; HISTORIA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=139779&tab=opac&oai:flacso.org.ec:139779

Software takes command
Provedor de dados: 121
Autores: Lev Manovich; Manovich, Lev.
Tipo: Text
Palavras-chave: MEDIOS SOCIALES; ASPECTOS SOCIALES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136463&tab=opac&oai:flacso.org.ec:136463

Peasants and the art of farming a chayanovian manifesto
Provedor de dados: 121
Autores: Jan Douwe van der Ploeg; Ploeg, Jan Douwe van der.
Tipo: Text
Palavras-chave: CAMPESINOS; ESTRUCTURA AGRARIA; AGRICULTURA SUSTENTABLE.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136470&tab=opac&oai:flacso.org.ec:136470

Informe Mundial sobre las Drogas 2013
Provedor de dados: 121
Autores: Oficina de las Naciones Unidas contra la Droga y el Delito (UNODC).
Tipo: Text
Palavras-chave: MERCADO; DROGAS DE USO INDEBIDO; RIESGOS PARA LA SALUD; NUEVAS SUSTANCIAS PSICOACTIVAS (NSP); OPIO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=139372&tab=opac&oai:flacso.org.ec:139372

Historia y memoria colectiva del Barrio La Mariscal de Quito
Provedor de dados: 121
Autores: Consuelo Mancheno; Mancheno, Consuelo.
Tipo: Text
Palavras-chave: BARRIO; LA MARISCAL; HISTORIA; CULTURA URBANA; MEMORIA COLECTIVA; IDENTIDAD CULTURAL.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132775&tab=opac&oai:flacso.org.ec:132775

El lazarillo de Tormes
Provedor de dados: 121
Tipo: Text
Palavras-chave: NOVELA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136569&tab=opac&oai:flacso.org.ec:136569

Derrida
Provedor de dados: 121
Tipo: Text
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134512&tab=opac&oai:flacso.org.ec:134512

Breve historia de la medicina del Ecuador
Provedor de dados: 121
Autores: Ramiro Estrella C.; Estrella C., Ramiro.
Tipo: Text
Palavras-chave: MEDICINA; HISTORIA; UNIVERSIDAD CENTRAL DEL ECUADOR; QUITO; ECUADOR.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133837&tab=opac&oai:flacso.org.ec:133837

Obras
Provedor de dados: 121
Autores: Norbert Lechner; Lechner, Norbert.
Tipo: Text
Palavras-chave: DEMOCRACIA; ESTADO; DERECHOS HUMANOS; PODER.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136620&tab=opac&oai:flacso.org.ec:136620

Human trafficking interdisciplinary perspectives
Provedor de dados: 121
Autores: Mary C. Burke; Burke, Mary C.
Tipo: Text
Palavras-chave: ESCLAVITUD.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=137222&tab=opac&oai:flacso.org.ec:137222

Golpistas sin gloria reflexiones en torno al 4 de febrero de 1992
Provedor de dados: 121
Autores: Manuel Malaver; Malaver, Manuel.
Tipo: Text
Palavras-chave: VENEZUELA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133640&tab=opac&oai:flacso.org.ec:133640

Desigualdad salarial en las provincias del Ecuador
Provedor de dados: 121
Autores: Ana Cristina Mena Ureta; Mena Ureta, Ana Cristina.
Tipo: Text
Palavras-chave: SALARIOS; DESIGUALDAD SALARIAL; MERCADO LABORAL; INGRESO; PROVINCIAS; ECUADOR; TESIS.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132509&tab=opac&oai:flacso.org.ec:132509

Sistemas rurales-urbanos en el DMQ
Provedor de dados: 121
Tipo: Text
Palavras-chave: DESARROLLO URBANO; PARROQUIAS; TERRITORIO RURAL; DISTRITO METROPOLITANO DE QUITO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134068&tab=opac&oai:flacso.org.ec:134068

Modern urban and regional economics
Provedor de dados: 121
Autores: Philip McCann; McCann, Philip.
Tipo: Text
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132642&tab=opac&oai:flacso.org.ec:132642

Dynamical processes on complex networks
Provedor de dados: 121
Autores: Barrat, Alain.
Tipo: Text
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133004&tab=opac&oai:flacso.org.ec:133004

Anales de la Universidad Central del Ecuador, 1968-1983
Provedor de dados: 121
Tipo: Text
Palavras-chave: UNIVERSIDAD; MEDICINA; REFORMA AGRARIA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135111&tab=opac&oai:flacso.org.ec:135111

China's economic development institutions, growth and imbalances
Provedor de dados: 121
Autores: Ming Lu ... [et al.].
Tipo: Text
Palavras-chave: DESARROLLO URBANO; DESARROLLO URBANO; CHINA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133003&tab=opac&oai:flacso.org.ec:133003

Bases conceptuales de la democracia
Provedor de dados: 121
Tipo: Text
Palavras-chave: DEMOCRACIA; DERECHOS HUMANOS; IGUALDAD; LIBERTAD.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=139888&tab=opac&oai:flacso.org.ec:139888

Alternativas al capitalismo / colonialismo del siglo XXI
Provedor de dados: 121
Tipo: Text
Palavras-chave: CAPITALISMO; BUEN VIVIR.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132457&tab=opac&oai:flacso.org.ec:132457

Los derechos de la naturaleza, son mis derechos manual para el tratamiento de los conflictos socioambientales bajo el nuevo marco de derechos constitucionales
Provedor de dados: 121
Autores: Greene, Natalia.
Tipo: Text
Palavras-chave: DERECHO AMBIENTAL; MEDIO AMBIENTE; PROBLEMAS AMBIENTALES; DESARROLLO SOCIAL; CONFLICTOS.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134836&tab=opac&oai:flacso.org.ec:134836

El santuario de las gaviotas cuatro vidas... un destino
Provedor de dados: 121
Autores: Nelson Valdivieso; Valdivieso, Nelson.
Tipo: Text
Palavras-chave: LITERATURA ECUATORIANA; NOVELA ECUATORIANA; ECUADOR.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133792&tab=opac&oai:flacso.org.ec:133792

Francis Bacon
Provedor de dados: 121
Autores: Martin Hammer; Hammer, Martin.
Tipo: Text
Palavras-chave: PINTURA; PINTORES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132276&tab=opac&oai:flacso.org.ec:132276

Obras
Provedor de dados: 121
Tipo: Text
Palavras-chave: HISTORIA; ARTE; MEMORIA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=137617&tab=opac&oai:flacso.org.ec:137617

Cuando los cultivos alimentan coches... relatos sobre los agrocombustibles y el expolio a los pueblos del sur
Provedor de dados: 121
Autores: Santiago Alba Rico ...[et al.].
Tipo: Text
Palavras-chave: CUENTOS; IMPACTO AMBIENTAL; DESARROLLO SUSTENTABLE.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134614&tab=opac&oai:flacso.org.ec:134614

Wikileaks en la Mitad de Mundo
Provedor de dados: 121
Tipo: Text
Palavras-chave: ESPIONAJE; RELACIONES INTERNACIONALES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132728&tab=opac&oai:flacso.org.ec:132728

El surrealismo y sus derivas visiones, declives y retornos
Provedor de dados: 121
Autores: coordinado por Eduardo Becerra.
Tipo: Text
Palavras-chave: SURREALISMO; LITERATURA; ARTE; REVISTAS; PINTURA; ARQUITECTURA; CINE.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=140194&tab=opac&oai:flacso.org.ec:140194

Manual de estilo Chicago - Deusto
Provedor de dados: 121
Autores: University of Chicago y Universidad Deusto; ed.. por Javier Torres Ripa.
Tipo: Text
Palavras-chave: MANUALES DE ESTILO; CITAS.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=138344&tab=opac&oai:flacso.org.ec:138344

Para empezar el olvido
Provedor de dados: 121
Autores: Vicente Robalino; Robalino, Vicente.
Tipo: Text
Palavras-chave: LITERATURA; LITERATURA LATINOAMERICANA; LITERATURA ECUATORIANA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=137033&tab=opac&oai:flacso.org.ec:137033

Computadoras y cajas negras
Provedor de dados: 121
Tipo: Text
Palavras-chave: ECUADOR; COMPUTADORAS; PROYECTO COMPUTADORES PARA EDUCAR.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=131285&tab=opac&oai:flacso.org.ec:131285

Brice Marden
Provedor de dados: 121
Autores: Eileen Costello; Costello, Eileen.
Tipo: Text
Palavras-chave: PINTURA; PINTORES; MINIMALISMO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132275&tab=opac&oai:flacso.org.ec:132275

Las sociedades de socorros mutuos y beneficencia en La Paz 1883-1920
Provedor de dados: 121
Tipo: Text
Palavras-chave: AYUDA PRIVADA; BOLIVIA; HISTORIA; SOCIEDADES DE BENEFICIENCIA; MUTUALISMO; SINDICATOS OBREROS; BIENESTAR SOCIAL.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133478&tab=opac&oai:flacso.org.ec:133478

Informe sobre el desarrollo mundial
Provedor de dados: 121
Autores: Banco Mundial.
Tipo: Text
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136605&tab=opac&oai:flacso.org.ec:136605

El resto indivisible
Provedor de dados: 121
Tipo: Text
Palavras-chave: MATERIALISMO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136635&tab=opac&oai:flacso.org.ec:136635

Fetichismo y poder en el pensamiento de Karl Marx
Provedor de dados: 121
Tipo: Text
Palavras-chave: PENSAMIENTO SOCIAL.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=139196&tab=opac&oai:flacso.org.ec:139196

La maquinaria andante historia, poder y movilizaciones sociales en la Ciudad de El Alto (2003-2005)
Provedor de dados: 121
Tipo: Text
Palavras-chave: MOVIMIENTOS SOCIALES; CULTURA; CONFLICTOS; EL ALTO; BOLIVIA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134044&tab=opac&oai:flacso.org.ec:134044

Ruta de la luna
Provedor de dados: 121
Tipo: MovingImage
Palavras-chave: CINE.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134725&tab=opac&oai:flacso.org.ec:134725

Sexualidad, violencia y cultura
Provedor de dados: 121
Autores: Juana Gamero de Coca; Gamero de Coca, Juana.
Tipo: Text
Palavras-chave: SEXUALIDAD; FEMINISMO; VIOLENCIA; CULTURA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136837&tab=opac&oai:flacso.org.ec:136837

Para este instante
Provedor de dados: 121
Tipo: Text
Palavras-chave: LITERATURA; LITERATURA LATINOAMERICANA; LITERATURA ECUATORIANA; LITERATURA BOLIVIANA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=137052&tab=opac&oai:flacso.org.ec:137052

El lugar de la cultura
Provedor de dados: 121
Autores: Bhabha, Homi K., 1949-.
Tipo: Text
Palavras-chave: IDENTIDAD; ASPECTOS SOCIALES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=139853&tab=opac&oai:flacso.org.ec:139853

Migrantes
Provedor de dados: 121
Tipo: Text
Palavras-chave: DERECHOS HUMANOS; ASPECTOS SOCIALES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133821&tab=opac&oai:flacso.org.ec:133821

The ecology of others
Provedor de dados: 121
Autores: Philippe Descola; Descola, Philippe.
Tipo: Text
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=131480&tab=opac&oai:flacso.org.ec:131480

A war that can't be won binational perspectives on the war on drugs
Provedor de dados: 121
Autores: ed. por Tony Payan, Kathleen Staudt y Z. Anthony Kruszewski.
Tipo: Text
Palavras-chave: ESTADOS UNIDOS.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136437&tab=opac&oai:flacso.org.ec:136437

Autorretrato / self-portrait
Provedor de dados: 121
Tipo: Text
Palavras-chave: RETRATOS; IMAGEN.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132609&tab=opac&oai:flacso.org.ec:132609

El tiempo, 1965 marzo-abril
Provedor de dados: 121
Tipo: Text
Palavras-chave: PERIODICO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135079&tab=opac&oai:flacso.org.ec:135079

La metamorfosis
Provedor de dados: 121
Autores: Franz Kafka; Kafka, Franz.
Tipo: Text
Palavras-chave: LITERATURA ALEMANA; LITERATURA CHECA; NOVELA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136575&tab=opac&oai:flacso.org.ec:136575

Resultados Electorales
Provedor de dados: 121
Autores: Elecciones Generales.
Tipo: Text
Palavras-chave: ELECCIONES; ECUADOR; COMPORTAMIENTO ELECTORAL.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133561&tab=opac&oai:flacso.org.ec:133561

Democracy in Latin America between hope and despair
Provedor de dados: 121
Autores: Ignacio Walker; Walker, Ignacio.
Tipo: Text
Palavras-chave: DEMOCRACIA; GOBIERNO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133964&tab=opac&oai:flacso.org.ec:133964

Administrando justicia al margen del estado las rondas campesinas de Cajamarca
Provedor de dados: 121
Autores: John S. Gitlitz; Gitlitz, John S.
Tipo: Text
Palavras-chave: ESTADO; CAMPESINOS; JUSTICIA SOCIAL; DELITO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=137565&tab=opac&oai:flacso.org.ec:137565

Tierra adentro un documental sobre el mayor terremoto del siglo 20 en Ecuador
Provedor de dados: 121
Tipo: MovingImage
Palavras-chave: DOCUMENTAL ECUATORIANO; DESASTRES NATURALES; TERREMOTO; PELILEO; AMBATO; TUNGURAHUA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=138525&tab=opac&oai:flacso.org.ec:138525

Ajeno amanecer violencia y discapacidad
Provedor de dados: 121
Tipo: Text
Palavras-chave: DISCAPACIDADES; VIOLENCIA; PROBLEMAS SOCIALES.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133425&tab=opac&oai:flacso.org.ec:133425

Social control an introduction
Provedor de dados: 121
Autores: James J., Chriss; Chriss, James J.
Tipo: Text
Palavras-chave: CONTROL SOCIAL; JUSTICIA; VIDA COTIDIANA; SEGURIDAD NACIONAL.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=136539&tab=opac&oai:flacso.org.ec:136539

Claiming the international
Provedor de dados: 121
Autores: ed. por Arlene B., Tickner y David L. Blaney.
Tipo: Text
Palavras-chave: RELACIONES INTERNACIONALES; SEGURIDAD INTERNACIONAL.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134448&tab=opac&oai:flacso.org.ec:134448

Historia del pensamiento social
Provedor de dados: 121
Autores: Salvador Giner; Giner, Salvador.
Tipo: Text
Palavras-chave: CIENCIAS SOCIALES; HISTORIA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134307&tab=opac&oai:flacso.org.ec:134307

Anales de la Universidad Central del Ecuador, 1947-1967
Provedor de dados: 121
Tipo: Text
Palavras-chave: UNIVERSIDAD; DERECHO LABORAL; HISTORIA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135110&tab=opac&oai:flacso.org.ec:135110

Una tragedia ocultada
Provedor de dados: 121
Autores: Miguel Angel Cabodevilla y  Milagros Aguirre; Cabodevilla, Miguel Angel.
Tipo: Text
Palavras-chave: GENOCIDIO; WAORANI; DERECHOS HUMANOS; ALTO COMISIONADO DE LAS NACIONES UNIDAS; INDIOS TAROMENANE.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133746&tab=opac&oai:flacso.org.ec:133746

A companion to organizational anthropology
Provedor de dados: 121
Autores: editado por D. Douglas Caulkins y Ann T. Jordan.
Tipo: Text
Palavras-chave: NEGOCIOS; COMPORTAMIENTO ORGANIZACIONAL.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=139842&tab=opac&oai:flacso.org.ec:139842

Arte en guerra Francia 1938-1947
Provedor de dados: 121
Autores: Museo Guggenheim Bilbao.
Tipo: Text
Palavras-chave: ARTE; EXPOSICIONES; GUERRA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132953&tab=opac&oai:flacso.org.ec:132953

Aristas en el tiempo nuevo
Provedor de dados: 121
Tipo: Text
Palavras-chave: LITERATURA; LITERATURA LATINOAMERICANA; LITERATURA ECUATORIANA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=137026&tab=opac&oai:flacso.org.ec:137026

Guatemala historia reciente (1954-1996)
Provedor de dados: 121
Tipo: Text
Palavras-chave: GUATEMALA; HISTORIA; SIGLO XX; CULTURA; ARTE; CONFLICTO.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=137195&tab=opac&oai:flacso.org.ec:137195

Movements against the current scale and social capital in peasants' struggles for water in the ecuadorian highlands
Provedor de dados: 121
Autores: Jaime Hoogesteger van Dijk; Hoogesteger van Dijk,Jaime.
Tipo: Text
Palavras-chave: AGUA; SISTEMAS DE RIESGO; CAMPESINOS; CAPITALISMO; RECURSOS NATURALES; CHIMBORAZO; ECUADOR.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133528&tab=opac&oai:flacso.org.ec:133528

Statistics with Stata updated for version 12
Provedor de dados: 121
Autores: Laurence C. Hamilton; Hamilton, Lawrence C.
Tipo: Text
Palavras-chave: PROGRAMAS DE ORDENADOR; STATA.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135638&tab=opac&oai:flacso.org.ec:135638

El arca de la realidad de la cultura del silencio a wikileaks
Provedor de dados: 121
Autores: Kintto Lucas; Lucas, Kintto.
Tipo: Text
Palavras-chave: HISTORIA; PERIODISMO; VIDA COTIDIANA; ENSAYOS.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=135237&tab=opac&oai:flacso.org.ec:135237

Arquitectura ferroviaria en los andes del Ecuador
Provedor de dados: 121
Tipo: Text
Palavras-chave: FERROCARRILES; ECUADOR.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134069&tab=opac&oai:flacso.org.ec:134069

The United Nations comes out! the construction of sexual orientation in the UN human rights institutions / organs (1983-2011)
Provedor de dados: 121
Tipo: Text
Palavras-chave: DERECHOS HUMANOS; ORGANIZACIONES INTERNACIONALES; TESIS.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=132456&tab=opac&oai:flacso.org.ec:132456

La fabrique politique des politiques publiques une approche pragmatique de l'action publique
Provedor de dados: 121
Autores: Philippe Zittoun; Zittoun, Philippe.
Tipo: Text
Palavras-chave: ANALISIS.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134169&tab=opac&oai:flacso.org.ec:134169

The structural links between ecology, evolution and ethics the virtuous epistemic circle
Provedor de dados: 121
Autores: ed. por Donato Bergandi.
Tipo: Text
Palavras-chave: HUMANIDAD.
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=133970&tab=opac&oai:flacso.org.ec:133970

Beyond development alternative visions from Latin America. Permanent working group on alternatives to development
Provedor de dados: 121
Autores: ed. por Miriam Lang y Dunia Mokrani.
Tipo: Text
Ano: 2013
URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=134811&tab=opac&oai:flacso.org.ec:134811

Construyendo un cuerpo masculino : nuevo perfil del y la gu??a penitenciario en el Ecuador
Provedor de dados: 122
Autores: Moreta Escobar, Alexandra Isabel.
Mi acercamiento, al proyecto de capacitaci??n para nuevos gu??as penitenciarios, me permite dar cuenta de una construcci??n impl??cita de un tipo de masculinidad mediante la instrucci??n formal (militar) en donde, mediante pr??cticas inductivas, impuestas y obligatorias se pretende lograr disciplinamiento del cuerpo y del car??cter, un alineamiento y homogenizaci??n de los individuos con respecto al patr??n masculino. La aplicaci??n de un c??digo conductual y las pr??cticas para la disciplina en mi criterio genera una tensi??n o contradicci??n entre el objetivo de concientizar a los aspirantes sobre el ejercicio y respeto de los derechos humanos en los CRS y en las pr??cticas disciplinarias para mantener el orden.
Tipo: Tesina
Palavras-chave: ECUADOR; GU??AS PENITENCIARIOS; DISCIPLINA; CONTRATO CONDUCTUAL; CUERPO; MASCULINIDAD; MUJERES; PRISON GUIDES; DISCIPLINE; BEHAVIORAL CONTRACT; BODY; MASCULINITY; WOMEN; DERECHOS HUMANOS; HUMAN RIGHTS; CENTROS DE REHABILITACI??N SOCIAL (CRS).
Ano: 2013
URL: http://hdl.handle.net/10469/5863

Agricultura periurbana haitiana y las Instituciones Micro Finanzas (IMFs) : un an??lisis de los efectos en el caso de la ciudad de Camp-Perr??n
Provedor de dados: 122
Autores: Chevalier, Smail.
El presente trabajo realiza un an??lisis del efecto y posterior aporte de las Instituciones de Micro Finanzas en el contexto econ??mico, social, ambiental de los habitantes de la comuna de Camp-Perrin, del departamento los Cayes, regi??n de Hait??. Este trabajo permiti?? evaluar cu??l es el efecto de estas instancias crediticias que llegan a los grupos m??s desfavorecidos del pa??s. Vemos tambi??n que esta estrategia crediticia, va enfatizada para el logro del fortalecimiento de las peque??as econom??as en el espacio urbano y periurbano, y que se constituyen en una estrategia que apunta a aportar al logro de la soberan??a y seguridad alimentaria principalmente de los sectores m??s desfavorecidos y enfatizando el sector femenino en el pa??s.
Tipo: Tesis
Palavras-chave: HAIT??; CAMP-PERR??N (CIUDAD); INSTITUCIONES MICRO FINANZAS (IMFs); AGRICULTURA PERIURBANA; ECONOM??A URBANA; AN??LISIS DE DATOS; AM??RICA LATINA; PERIURBAN AGRICULTURE; URBAN ECONOMICS; DATA ANALYSIS; LATIN AMERICA.
Ano: 2013
URL: http://hdl.handle.net/10469/5852

Construyendo ciudadan??a : participaci??n comunitaria de las mujeres negras / afroecuatorianas en Guayaquil (1972-1995)
Provedor de dados: 122
Autores: Cortez Bonilla, Alejandrina Olivia.
En esta investigaci??n analizo la participaci??n de las mujeres Negras/afrodescendientes, migrantes de origen esmeralde??o, en organizaciones barriales mixtas en los barrios del suburbio suroeste de la ciudad de Guayaquil en los a??os 1972-1995, organizaciones en las que tambi??n participaron varones y otras mujeres de origen ??tnico mestizo. A trav??s de las voces de ??stas mujeres pude conocer como ellas combinaron sus roles dom??sticos de madres y amas de casa con la dirigencia barrial organiz??ndose para exigir servicios b??sicos al municipio.
Tipo: Tesis
Palavras-chave: ECUADOR; GUAYAQUIL (CIUDAD); MUJERES NEGRAS; CIUDADAN??A; PARTICIPACI??N COMUNITARIA; ORGANIZACIONES BARRIALES; DICTADURAS; AM??RICA LATINA; PUEBLOS NEGROS; POL??TICAS P??BLICAS; LIDERAZGOS FEMENINOS; FEMINISMO; BLACK WOMEN; CITIZENSHIP; COMMUNITY PARTICIPATION; NEIGHBORHOOD ORGANIZATIONS; DICTATORSHIPS; LATIN AMERICA; BLACK PEOPLE; PUBLIC POLICY; FEMALE LEADERSHIP; FEMINISM; PARTICIPACI??N POL??TICA; POLITICAL PARTICIPATION.
Ano: 2013
URL: http://hdl.handle.net/10469/5862

Mientras la ciudad duerme. Pistoleros, polic??as y periodistas en Buenos Aires, 1920-1945 de Lila Caimari (Rese??as)
Provedor de dados: 122
Autores: Bonafina, Javier G.
La obra de Lila Caimari, titulado: ???Mientras la ciudad duerme???, puede ser vista como parte de una trilog??a que comenz?? con Apenas un delincuente; Crimen, castigo y cultura en la Argentina y continu?? con La ciudad y el crimen.  Cada uno de los libros que componen este conjunto est?? dotado de una s??lida base documental y, al mismo tiempo, contienen una incre??ble usina de nuevas ideas e intuitivos eslabonamientos argumentales.  Este tercer libro se encuentra compuesto de varios ensayos que, seg??n reconoce la autora, hab??an sido pensados mientras realizaba sus investigaciones en torno a la historia social de las ideas punitivas.  En ese momento, su principal inter??s eran los discursos de fi??nales del siglo XIX sobre las figuras del de??lincuente...
Tipo: Art??culo
Palavras-chave: RESE??A ACAD??MICA; PISTOLEROS; POLIC??AS; PERIODISTAS; BUENOS AIRES; ARGENTINA; ACADEMIC REVIEW; GUNMEN; POLICE; JOURNALISTS.
Ano: 2013
URL: http://hdl.handle.net/10469/5163

??Despu??s de la miner??a que? An??lisis del impacto socioecon??mico y ambiental de la miner??a : caso South American Development Company (SADCO - CIMA), Portovelo y Zaruma - El Oro - Ecuador
Provedor de dados: 122
Autores: Paredes Pozo, Diana Cristina.
El trabajo, expuesto a continuaci??n, da a conocer la experiencia de extracci??n industrial de oro m??s importante que el Ecuador ha tenido, desarrollada entre el per??odo 1896-1950 en el Cant??n Portovelo dentro de la administraci??n de la empresa South American Development Company; y como su paso logr?? influenciar en las condiciones econ??micas, sociales y ambientales de la zona. Adem??s, el estudio realiza un an??lisis de las diferentes etapas de extracci??n minera que ha vivido la zona y cu??les son los resultados que cada una ha venido dejando. La reflexi??n te??rica se centra en si, nuestra condici??n de riqueza natural, realmente genera los beneficios esperados y cu??les son los resultados econ??micos, sociales y ambientales.
Tipo: Tesis
Palavras-chave: ECUADOR; PORTOVELO; ZARUMA; PROVINCIA DE EL ORO; MINER??A; IMPACTO SOCIOECON??MICO; IMPACTO AMBIENTAL; SOUTH AMERICAN DEVELOPMENT COMPANY (SADCO - CIMA).
Ano: 2013
URL: http://hdl.handle.net/10469/5943

Procesos de formaci??n period??stica en el interior de los medios de comunicaci??n : el paso de la censura a la autocensura
Provedor de dados: 122
Autores: Jaramillo Garc??s, Mar??a Carolina.
El presente trabajo de investigaci??n explora los procesos de formaci??n period??sticos en el interior de un medio de comunicaci??n, entendi??ndolos como procesos de disciplinamiento capaces de configurar periodistas d??ciles y ??tiles para el medio que los emplea. ??sta hip??tesis que sugiere pensar a los periodistas como individuos susceptibles de ser disciplinados surge de la revisi??n cuidadosa del debate sobre el proyecto de ley de comunicaci??n, como escenario clave en el cual los periodistas han estado ausentes o sospechosamente alineados al discurso oficial de los medios privados.
Tipo: Tesis
Palavras-chave: MEDIOS DE COMUNICACI??N; PERIODISTAS; LIBERTAD DE EXPRESI??N; FORMACI??N PROFESIONAL; CENSURA; PRENSA LIBERAL; REDACCI??N NORMALIZADA; MASS MEDIA; JOURNALISTS; FREEDOM OF EXPRESSION; TRAINING; CENSORSHIP; LIBERAL PRESS; STANDARD EDITORIAL; AUTOCENSURA; SELF-CENSORSHIP.
Ano: 2013
URL: http://hdl.handle.net/10469/5919

Trabajo creativo y reestructuraci??n productiva en la industria cultural de la publicidad farmac??utica online en el marco del capitalismo contempor??neo : implicaciones socioecon??micas en Argentina, 2008 - 2012
Provedor de dados: 122
Autores: Ruiz, Silvina.
Esta Tesis se propone contribuir al conocimiento sobre la organizaci??n productiva y del trabajo que denominamos ???Creativo / Original??? vs. "Creativo / Comercial???, en la producci??n de contenidos informacionales en la Industria Cultural de la Publicidad Farmac??utica online en la Argentina, y sus implicaciones para el desarrollo de los/as trabajadores/as y del pa??s. Con ese objetivo nuestra investigaci??n -si bien se concentra en el nivel micro social en base a la experiencia de una empresa trasnacional (ET) filial Argentina (2008-2010)- analiza asimismo la articulaci??n de las trayectorias de la empresa contratante (farmac??utica) y de la subcontratada (publicidad/marketing online) cuyos nexos en el pa??s tienen lugar en un contexto de profunda...
Tipo: Tesis
Palavras-chave: CREATIVIDAD; PUBLICIDAD; MARKETING; GLOBALIZACI??N; ORGANIZACI??N DEL TRABAJO; EDUCACI??N A DISTANCIA; SOLIDARIDAD; INDUSTRIA FARMACE??TICA; ESTUDIOS DE CASOS; ARGENTINA.
Ano: 2013
URL: http://hdl.handle.net/10469/5318

El desempe??o de las zonas francas en Argentina : una aproximaci??n a los determinantes
Provedor de dados: 122
Autores: Michalczewsky, Kathia.
Bajo ciertas condiciones, las zonas francas pueden actuar como una herramienta eficaz de atracci??n de inversiones, incremento y diversificaci??n de exportaciones y creaci??n de empleo, as?? como tambi??n fomentar la innovaci??n a trav??s de la transferencia de tecnolog??a y conocimientos. El r??gimen de zonas francas fue instalado en Argentina en 1994 con un doble objetivo: impular las exportaciones y la actividad industrial y convertirse en polos de desarrollo en las regiones donde fueran instaladas. La evidencia muestra que las metas planteadas inicialmente no han sido alcanzadas. Los estudios de casos  a nivel global, tanto de expriencias exitosas como de fracasos, destacan algunos de los factores que deben estar presentes para que el r??gimen...
Tipo: Tesis
Palavras-chave: ZONAS FRANCAS; HERRAMIENTAS DE POL??TICA; INTEGRACI??N ECON??MICA; MERCOSUR; OMC; ARGENTINA.
Ano: 2013
URL: http://hdl.handle.net/10469/5594

El derecho a la ciudad de los ni??os de la calle en la ciudad de Puerto Pr??ncipe : una visi??n desde las pol??ticas urbanas
Provedor de dados: 122
Autores: S??nat, Rachel.
Esta tesis trata de la problem??tica de ni??os de la calle como fen??meno social que ocurre en el espacio urbano. Es una investigaci??n cualitativa que pone ??nfasis en las fallas que abarcan los debates acerca de la reconstrucci??n de la ciudad de Puerto Pr??ncipe tras el terremoto que sucedi?? el d??a martes 12 de enero de 2010. Se pretende mostrar los obst??culos, tanto internos como externos que estorban las posibilidades para integrar la problem??tica de los ni??os de la calle en la agenda de las pol??ticas urbanas. Con respecto a ese contexto particular de la reconstrucci??n de la ciudad, se analizan cu??les son los intereses en juego en este proceso, considerando el peso de la comunidad internacional frente a la capacidad de negociar de los actores...
Tipo: Tesis
Palavras-chave: HAIT??; PUERTO PR??NCIPE; NI??OS DE LA CALLE; DERECHO A LA CIUDAD; POL??TICAS URBANAS; EXCLUSI??N SOCIAL; DERECHOS DE LA NI??EZ; ESPACIOS P??BLICOS; SUPERVIVENCIA; BRIGADA DE PROTECCI??N DE MENORES (BPM); SOCIEDAD; COOPERACI??N INTERNACIONAL; STREET CHILDREN; RIGHT TO THE CITY; URBAN POLICY; SOCIAL EXCLUSION; RIGHTS OF CHILDREN; PUBLIC SPACES; SURVIVAL; SOCIETY; INTERNATIONAL COOPERATION; CLASES SOCIALES; SOCIAL CLASSES; REHABILITACI??N URBANA; URBAN REHABILITATION.
Ano: 2013
URL: http://hdl.handle.net/10469/5865

Urvio. Revista Latinoamericana de Seguridad Ciudadana. [no. 13, junio 2013. REVISTA COMPLETA]
Provedor de dados: 122
Autores: FLACSO Sede Ecuador. Departamento de Asuntos P??blicos.
La  presente edici??n de URVIO aporta elementos de debate sobre el tema de la ???Despenalizaci??n de las drogas???, a partir de art??culos que responden a las inquietudes de varios pa??ses y de la regi??n latinoamericana. Estos aportes giran en funci??n del prohibicionismo y penalizaci??n de las drogas, y su vinculaci??n con las agendas de seguridad nacional y regional en Latinoam??rica, el an??lisis de las propuestas de despenalizaci??n y de la legalizaci??n de las drogas en los ??ltimos a??os y finalmente las razones restrictivas al cambio del paradigma prohibicionista de las drogas psicotr??picas.  Estas y otras interrogantes no menos importantes son abordadas en el presente n??mero de URVIO a trav??s de ocho art??culos de investigaci??n, una...
Tipo: Revista
Palavras-chave: POL??TICAS DE DROGAS; AM??RICA LATINA; DESPENALIZACI??N; TR??FICO DE DROGAS; LEGALIZACI??N; MARIHUANA; DROGADICTOS; DEMOCRACIA DELIBERATIVA; HOJA DE COCA; LEGISLACI??N; DROGAS ILEGALES; ECUADOR; M??XICO; BOLIVIA; DRUG POLICY; LATIN AMERICA; DECRIMINALIZATION; DRUG TRAFFICKING; PROBATE; JUNKIES; DEMOCRACY DELIBERATIVE; COCA; LEGISLATION; ILLEGAL DRUGS; DROGAS PSICOTR??PICAS; PSYCHOTROPIC DRUGS.
Ano: 2013
URL: http://hdl.handle.net/10469/5462

El regionalismo de la educación superior en el proceso de integración regional del MERCOSUR: políticas de coordinación, complementación, convergencia y armonización en las iniciativas de acreditación de la calidad de carreras de grado (1998-2012)
Provedor de dados: 122
Autores: Perrotta, Daniela Vanesa.
El presente trabajo de investigación analiza las peculiaridades de las políticas regionales del MERCOSUR en el área de la educación superior en el marco del proyecto político del acuerdo de integración y su vinculación con el nivel nacional de definición de las políticas públicas. En vistas a alcanzar este objetivo se procede a un estudio de caso: la política de acreditación de la calidad de las titulaciones de grado en el MERCOSUR (1998-2012), que contó con una primera fase de carácter experimental entre los años 2002 y 2006 (Mecanismo Experimental de Acreditación de Carreras de Grado Universitario del MERCOSUR, Bolivia y Chile, MEXA) y devino, a mediados del año 2008 en un sistema permanente (Sistema de Acreditación de Carreras Universitarias para el...
Tipo: Tesis
Palavras-chave: INTEGRACIÓN REGIONAL; MERCOSUR; ENSEÑANZA SUPERIOR; MODELOS EDUCATIVOS; UNIVERSIDADES; POLÍTICA EDUCATIVA; ACREDITACIÓN [EDUCACIÓN]; ARGENTINA; BRASIL; PARAGUAY; URUGUAY.
Ano: 2013
URL: http://hdl.handle.net/10469/5069

La seguridad humana analizada a trav??s de las solicitudes de medidas cautelares presentadas ante la Comisi??n Interamericana de Derechos Humanos en contra de Ecuador durante los a??os 2003-2013
Provedor de dados: 122
Autores: Ulloa Saltos, Sandra Daniela.
El presente trabajo lo que busca es realizar un an??lisis breve en torno a los tres puntos antes mencionados, el cual se basa en un estudio de las medidas cautelares que han sido otorgadas por el organismo internacional conocido como Comisi??n Interamericana de Derechos Humanos y su relaci??n con los temas vinculados a seguridad humana, concepto que no fue tratado sino hasta 1994 por el Programa de Naciones Unidas para el Desarrollo y cuyo eje central es el ser humano.
Tipo: Tesina
Palavras-chave: SEGURIDAD HUMANA; DERECHOS HUMANOS; MEDIDAS CAUTELARES; SISTEMA INTERAMERICANO DE DERECHOS HUMANOS; COMISI??N INTERAMERICANA DE DERECHOS HUMANOS (CIDH); ECUADOR.
Ano: 2013
URL: http://hdl.handle.net/10469/5935

Nono. Movilizaci??n pol??tica y migraci??n campesina de Jos?? Antonio Figueroa (Rese??as)
Provedor de dados: 122
Autores: Cielo, Cristina.
El libro propone que formas de ciudada??n??a diferenciada, como el que fundamenta el movimiento ind??gena, emergen a trav??s de ???y no en contra de??? transformaciones en insti??tuciones estatales como la Reforma Agraria o procesos posteriores de modernizaci??n rural.
Tipo: Art??culo
Palavras-chave: RESE??A ACAD??MICA; MOVILIZACI??N POL??TICA; MIGRACI??N CAMPESINA; ACADEMIC REVIEW; POLITICAL MOBILIZATION; RURAL MIGRATION.
Ano: 2013
URL: http://hdl.handle.net/10469/5156

Las representaciones sociales de la pol??tica en adolescentes escolarizados de Buenos Aires
Provedor de dados: 122
Autores: Bruno, Daniela Silvana.
Durante los ??ltimos a??os investigaciones realizadas en diferentes pa??ses analizaron  la relaci??n de los j??venes con la pol??tica, se??alando su rechazo y su baja participaci??n  pol??tica. El objetivo de este trabajo fue indagar la representaci??n social de la pol??tica de adolescentes escolarizados de Buenos Aires y sus posicionamientos  diferenciales seg??n su pertenencia a distintos grupos sociales. Se utiliz?? una muestra intencional compuesta por 203 estudiantes, con edades entre 17 y 18 a??os. Se administr?? la t??cnica de asociaci??n de  palabras a partir del t??rmino inductor ???pol??tica???. Los resultados obtenidos ponen de  manifiesto que la pol??tica es considerada como una instituci??n democr??tica valorada  negativamente y personalizada...
Tipo: Tesis
Palavras-chave: REPRESENTACIONES SOCIALES; ADOLESCENCIA; CULTURA POL??TICA; ARGENTINA; BUENOS AIRES [CIUDAD]; BUENOS AIRES [PROVINCIA].
Ano: 2013
URL: http://hdl.handle.net/10469/5635

Miner??a, ambiente y movimientos sociales (Editorial)
Provedor de dados: 122
Autores: Cuvi, Nicol??s.
La investigaci??n y reflexi??n sobre los procesos de miner??a de metales a gran escala (o megaminer??a), y de los procesos de resistencia que han ocasionado, ha adquirido un momentum importante en Am??rica Latina. En ese contexto, tambi??n se han sucedido reflexiones sobre la peque??a miner??a, o artesanal.
Tipo: Art??culo
Palavras-chave: MINER??A; MEDIO AMBIENTE; MOVIMIENTOS SOCIALES.
Ano: 2013
URL: http://hdl.handle.net/10469/5962

En el cruce de caminos : identidad, cosmovisión y chamanismo Tsáchila (Reseñas)
Provedor de dados: 122
Autores: Fiallo Monedero, Liliam.
En esta obra, Montserrat Ventura da cuenta de las limitaciones actuales de la etnología para estudiar a sociedades que se encuentran en el terreno intermedio entre ‘las tierras altas’ y ‘las tierras bajas’. Ante esta limitación disciplinar de los estudios antropológicos en el área, la autora recurre a una refinada metodología que parte de los cruces entre estos estudios dicotómicos, entendiendo tal situación como un “elemento constituyente de la lógica cultural  indígena”.
Tipo: Artículo
Palavras-chave: RESEÑA ACADÉMICA; IDENTIDAD; COSMOVISIÓN; CHAMANISMO; GRUPOS ÉTNICOS; TSÁCHILAS; ECUADOR; ACADEMIC REVIEW; IDENTITY; SHAMANISM; ETHNIC GROUPS.
Ano: 2013
URL: http://hdl.handle.net/10469/4723

La disputa por la licencia social de los proyectos mineros en La Rioja, Argentina (Dossier)
Provedor de dados: 122
Autores: Sola ??lvarez, Marian.
Desde comienzos de este siglo, proyectos de empresas transnacionales destinados, fundamentalmente, a extraer a gran escala oro, plata, cobre y molibdeno vuelven a interpelar al Valle de Famatina, situado en el noroeste de Argentina, en la provincia de La Rioja. La disputa que se genera en torno a la ???licencia social??? de los proyectos mineros, pone en evidencia caracter??sticas de la matriz pol??tica local y la apuesta del gobierno por las actividades extractivas, a la vez que ilustra el contenido y la potencialidad de las resistencias sociales. La capacidad de veto de una red de asambleas de vecinos auto convocados y de una comunidad altamente movilizada en momentos cr??ticos del conflicto se enmarca en un proceso de resistencia a la mercantilizaci??n...
Tipo: Art??culo
Palavras-chave: PROVINCIA DE LA RIOJA; ARGENTINA; PROYECTOS MINEROS; MINER??A; CONFLICTOS SOCIOAMBIENTALES; MOVIMIENTOS SOCIALES; TERRITORIO; RECURSOS NATURALES.
Ano: 2013
URL: http://hdl.handle.net/10469/5964

Factores asociados a la impugnaci??n de las obligaciones tributarias y su efecto en la recaudaci??n fiscal ecuatoriana
Provedor de dados: 122
Autores: Andrade Montenegro, Santiago Andr??s.
El Servicio de Rentas Internas (SRI) fue creado el 02 de diciembre de 1997 con la ??nica consigna de hacer diferencia y romper esquemas en el servicio p??blico a nivel nacional, ofreciendo un trabajo eficiente a la ciudadan??a ecuatoriana, transform??ndose en poco m??s de una d??cada en una instituci??n p??blica comprometida y la de mejor posicionamiento en todo el aparato estatal. Este posicionamiento de respeto y reconocimiento por parte de la ciudadan??a ha sido gracias a un trabajo consolidado principalmente de su recurso humano, que tiene focalizado de manera muy clara d??nde quiere ir junto a la Administraci??n Tributaria.  En este punto de an??lisis nacen varias inc??gnitas, ??pueden existir limitantes para una eficiente recaudaci??n?, ??existen...
Tipo: Tesis
Palavras-chave: ECUADOR; OBLIGACIONES TRIBUTARIAS; RECAUDACI??N TRIBUTARIA; IMPUESTOS; AM??RICA LATINA; TAX OBLIGATIONS; TAX COLLECTION; TAXES; LATIN AMERICA.
Ano: 2013
URL: http://hdl.handle.net/10469/5899

Sistemas medi??ticos subnacionales argentinos : heterogeneidad y diferencias en contextos neopopulistas (Dossier)
Provedor de dados: 122
Autores: Picco, Ernesto.
Los gobiernos neopopulistas de los pa??ses de la regi??n han avanzado en pol??ticas que tienden a combatir las corporaciones medi??ticas y democratizar la comunicaci??n. A partir del an??lisis del caso argentino, este traba??jo busca dar cuenta de c??mo estas pol??ticas no han tenido a??n eco en los sistemas de medios subnacionales. Teniendo en cuenta la relaci??n de las empresas comunicacionales con los gobiernos locales, se propone aqu?? la clasificaci??n de los sistemas de medios subnacionales en tres tipos: patrimonialistas, donde los gobiernos controlan la mayor parte de los medios locales; polarizados, donde los gobiernos se encuentran con fuerte oposici??n medi??tica, pero igualmente cuentan con medios a su favor; e h??bridos, ubicados en...
Tipo: Art??culo
Palavras-chave: SISTEMAS DE MEDIOS; ??MBITOS SUBNACIONALES; POL??TICA; KIRCHNERISMO; ARGENTINA; MEDIA SYSTEMS; SUB-NATIONAL SPHERE; POLITICS; KIRCHNERISM.
Ano: 2013
URL: http://hdl.handle.net/10469/5153

Tiempos de cambio : política y comunicación en América Latina (Reseñas)
Provedor de dados: 122
Autores: Maluf, Marcia.
En suma, los análisis referidos del contenido de este libro, dan cuenta de tendencias que se hacen cada vez más visibles en la relación entre los medios, la política y la sociedad, en un mundo en que los medios emergen como actores en un conjunto amplísimo de espacios y procesos simbólicos, políticos y culturales. Podría decirse que los artículos expresan la expectativa sostenida sobre una función democratizadora y racionalizadora de los medios, a semejanza de lo que fueron las expectativas depositadas en la ciencia en sus orígenes. Pero dichas expectativas no pueden dejar de considerar que todo espacio social, aunque público, no puede existir sin los efectos de subjetividades, que son siempre políticas. El reconocimiento de esta realidad conlleva no...
Tipo: Artículo
Palavras-chave: RESEÑA ACADÉMICA; CAMBIOS SOCIALES; COMUNICACIÓN; AMÉRICA LATINA; DESIGUALDAD SOCIAL; GOBIERNO; ESTADO; ACADEMIC REVIEW; SOCIAL CHANGE; COMMUNICATION; LATIN AMERICA; SOCIAL INEQUALITY; GOVERNMENT; STATE.
Ano: 2013
URL: http://hdl.handle.net/10469/4713

El proceso de integraci??n pol??tica de los Movimientos de Desocupados a la gesti??n del Estado en la Argentina kirchnerista : un an??lisis del estilo de gesti??n de los Programas Promotores Territoriales para el cambio Social y de Fortalecimiento y Participaci??n de las Mujeres Juana Azurduy durante el periodo 2003 - 2009
Provedor de dados: 122
Autores: Gradin, Agustina.
En esta tesis nos proponemos analizar la relaci??n entre el Estado y los Movimientos de Desocupados, a partir de la participaci??n de ??stos en las pol??ticas p??blicas. En esta l??nea, consideramos que la integraci??n a la gesti??n de pol??ticas p??blicas es una forma institucional de participaci??n de dichas organizaciones en el Estado. Este proceso de institucionalizaci??n, a su vez, posibilit?? la constituci??n de estas organizaciones, y espec??ficamente del caso analizado, en actores sociales y pol??ticos con capacidad de incidir en la agenda p??blica ya que se encontraron, por primera vez, frente a la posibilidad de pensar, decidir y ejecutar pol??ticas sociales. Consecuentemente, su incorporaci??n a la administraci??n p??blica comenz?? a vislumbrar...
Tipo: Tesis
Palavras-chave: INTEGRACI??N POL??TICA; DESOCUPACI??N; MOVIMIENTOS SOCIALES; KIRCHNERISMO; CAMBIO SOCIAL; PARTICIPACI??N DE LA MUJER; PIQUETEROS; RELACIONES DE PODER; PROGRAMAS SOCIALES; ARGENTINA.
Ano: 2013
URL: http://hdl.handle.net/10469/5493

China en los organismos multilaterales y foros de cooperaci??n internacional y en las regiones de Asia Central y Am??rica Latina: reflexiones sobre liderazgo global y regional
Provedor de dados: 122
Autores: Gonz??lez J??uregui, Mar??a Juliana.
Los cambios que se han llevado a cabo en China se han traducido en un creciente protagonismo e influencia internacional. En la presente investigaci??n se analizar??n aspectos seleccionados de esa nueva influencia. Tanto la reincorporaci??n de  la RPC al sistema internacional, como su vinculaci??n con Asia Oriental y Central y con  Am??rica Latina intentan apuntalar un proceso de reformas que se inici?? en 1978 y a??n  sigue en curso. A su vez, procuran sostener la convivencia con el orden global post  Guerra Fr??a. Asimismo, son parte de una estrategia que aspira consolidar su crecimiento interno y, al mismo tiempo, recuperar la gravitaci??n internacional de siglos pasados. El an??lisis de este tema ha inspirado las preguntas que guiar??n la...
Tipo: Tesis
Palavras-chave: ORGANISMOS MULTILATERALES; COOPERACI??N INTERNACIONAL; INTEGRACI??N REGIONAL; RELACIONES DE PODER; LIDERAZGO; ORGANIZACI??N MUNDIAL DEL COMERCIO; ACUERDOS DE LIBRE COMERCIO; CRECIMIENTO ECON??MICO; INVERSIONES EXTRANJERAS; AM??RICA LATINA; CHINA.
Ano: 2013
URL: http://hdl.handle.net/10469/5628

Cooperativas de miner??a de peque??a escala en Bolivia: De salvavidas de los pobres a maquinaria de manipulaci??n pol??tica (Dossier)
Provedor de dados: 122
Autores: Carrillo, Felix; Salman, Ton; Soruco, Carola.
En este art??culo se argumenta que las relaciones entre movimientos u organizaciones sociales y Estado se desarrollan no ??nicamente en base a c??lculos de intereses y defensa de metas objetivas en negociaciones pol??ticas, sino tambi??n en el marco de situaciones particulares, de culturas e historias espec??ficas. Nuestra investigaci??n sobre el desarrollo del relacionamiento entre las cooperativas mineras y su organizaci??n nacional y el Estado boliviano demuestra que es de crucial importancia tomar en cuenta los aspectos hist??ricos, de memoria colectiva, regionales y otros dentro las organizaciones. Las tradiciones, memorias y destrezas incorporadas en las organizaciones mineras as?? como en el ??mbito pol??tico influenciar??n la manera en que las...
Tipo: Art??culo
Palavras-chave: BOLIVIA; COOPERATIVAS; MINER??A ARTESANAL; MAQUINARIAS; POBREZA; ESTADO; POL??TICA; ORGANIZACIONES SOCIALES; MEMORIA COLECTIVA; EXTRACCI??N DE ORO; COOPERATIVA ASOBAL; IDENTIDAD.
Ano: 2013
URL: http://hdl.handle.net/10469/5978

La penalizaci??n de drogas en Am??rica Latina desde el marco legal y constitucional (Comparativo)
Provedor de dados: 122
Autores: Monroy D??az, Javier.
En esta secci??n comparativa se realiza una descripci??n de los principios b??sicos del marco legal, jur??dico y la normatividad vigente sobre la penalizaci??n de las drogas il??citas y estupefacientes en varios pa??ses de Am??rica Latina. Para ello, se ha divido este comparativo en tres secciones de acuerdo con las zonas geogr??ficas de la regi??n, con el fin de facilitar la sistematizaci??n de la informaci??n recopilada y, por supuesto, su aprehensi??n. En primer lugar tenemos a M??xico como l??der de la zona norte donde el conflicto social, el sicariato y el narcotr??fico son mucho m??s delicados que en el resto de pa??ses latinoamericanos debido a su ubicaci??n geoestrat??gica. En M??xico se vive d??a a d??a una lucha de los carteles de drogas por el...
Tipo: Art??culo
Palavras-chave: PENALIZACI??N; DROGAS PSICOTR??PICAS; AM??RICA LATINA; LEGISLACI??N; POL??TICA ANTIDROGAS; TR??FICO DE DROGAS; PENALTY; DRUG PSYCHOACTIVE; LATIN AMERICA; LEGISLATION; DRUG POLICY; DRUG TRAFFICKING; ESTADOS UNIDOS.
Ano: 2013
URL: http://hdl.handle.net/10469/5472

Una mirada a la actividad minera en Guatemala desde la justicia ambiental (Dossier)
Provedor de dados: 122
Autores: S??nchez, Geisselle Vanessa.
La actividad minera, a partir del caso de la mina Marlin, abre una discusi??n sobre su pertinencia en el contexto guatemalteco. Desde la perspectiva del Estado la actividad se considera un importante aporte a la econom??a del pa??s y a las comunidades donde se ubica la explotaci??n; sin embargo, la experiencia de Marlin ha sido un importante foco de conflictividad socioambiental, especialmente porque la actividad ha generado m??s problemas que soluciones. El presente art??culo muestra c??mo se distribuyen los costos y beneficios (derivados de la explotaci??n de la mina Marlin) entre la empresa, el Estado y las comunidades donde se establece la mina, utilizando para el an??lisis la perspectiva de la justicia ambiental. Se concluye que para que la empresa...
Tipo: Art??culo
Palavras-chave: GUATEMALA; MINER??A; ESTADO; ECONOM??A; COMUNIDADES LOCALES; CONFLICTOS SOCIOAMBIENTALES; JUSTICIA AMBIENTAL; CONTAMINACI??N AMBIENTAL; RECURSOS NATURALES; MINA MARLIN.
Ano: 2013
URL: http://hdl.handle.net/10469/5976

El estado en el Per?? : una agenda de investigaci??n (Rese??as)
Provedor de dados: 122
Autores: Mel??ndez Guerrero, Luis.
Entender al Estado en todos sus niveles,  conocer las causas de sus fortalezas y debilidades, y lo que piensan sus principales  agentes son asuntos relevantes no solo para  el acad??mico, sino tambi??n para el pol??tico  y el gestor p??blico. El libro de Dargent contribuye a este fin, ya que algunas de sus conclusiones son f??cilmente generalizables para otros pa??ses de la regi??n, lo que alimenta sus virtudes.
Tipo: Art??culo
Palavras-chave: RESE??A ACAD??MICA; ESTADO; INVESTIGACI??N SOCIAL; PER??; ACADEMIC REVIEW; STATE; SOCIAL RESEARCH.
Ano: 2013
URL: http://hdl.handle.net/10469/5574

El legado político-intelectual de Eric Hobsbawm : historias globales desde arriba y desde abajo
Provedor de dados: 122
Autores: Lao Montes, Agustín.
Escribir historias globales no es solo hilar argumentos en una narrativa historiográfica, sino también accionar para cambiar el mundo a través de una praxis transformativa. En este breve artículo, no pretendemos hacer un balance del legado de un gigante intelectual, con una obra tan prolífica, versátil y variada, como fue Eric Hobsbawm, pero sí presentar una reflexión general sobre su trabajo que combinó orgánicamente teoría, historia y praxis política. Pensar críticamente su legado implica trascender la simple hagiografía y celebración de su enorme estatura intelectual, para reconocer no solo sus grandes virtudes sino también sus ambigüedades, problemas y contradicciones, lo cual intentaremos hacer en este ensayo.
Tipo: Artículo
Palavras-chave: HOBSBAWM; ERIC IDEOLOGÍAS POLÍTICAS LEGADO INTELECTUAL NARRATIVA HISTORIOGRÁFICA HISTORIA ENSAYO POLITICAL IDEOLOGIES INTELLECTUAL LEGACY NARRATIVE HISTORIOGRAPHICAL HISTORY TEST.
Ano: 2013
URL: http://hdl.handle.net/10469/4706

Cooperaci??n para el desarrollo : anatom??a de una crisis (Dossier)
Provedor de dados: 122
Autores: Unceta Satrustegui, Koldo.
Este trabajo presenta un marco interpretativo sobre la crisis de la cooperaci??n al desarrollo.  Partiendo del an??lisis de algunos de sus s??ntomas, se centra en la consideraci??n de las transformaciones que se han operado en las ??ltimas d??cadas y que han afectado especialmente a la identidad de la cooperaci??n, como son las relativas a la globalizaci??n de los procesos econ??micos y sociales y a la vigencia del paradigma Norte-Sur como modelo interpretativo de los conflictos sobre desarrollo. Finalmente, se discuten algunos aspectos relativos a los objetivos, instrumentos y actores de la cooperaci??n al desarrollo, planteando la influencia de todo ello en el debate sobre una posible readaptaci??n y puesta al d??a de la misma.
Tipo: Art??culo
Palavras-chave: COOPERACI??N AL DESARROLLO; DESARROLLO ECON??MICO; CRISIS ECON??NICA; MODELOS DE DESARROLLO; RELACIONES NORTE - SUR; GLOBALIZACI??N; COOPERACI??N SUR - SUR; DEVELOPMENT COOPERATION; ECONOMIC DEVELOPMENT; ECONOMIC CRISIS; DEVELOPMENT MODELS; RELATIONS NORTH - SOUTH; GLOBALIZATION; SOUTH-SOUTH COOPERATION.
Ano: 2013
URL: http://hdl.handle.net/10469/5563

Redd+ in a climate of injustice
Provedor de dados: 122
Autores: McBreen, James Patrick.
This research attempts to elucidate the beneficial role of the REDD+ mechanism in the mitigation of climate change, as well as justice-related issues to its implementation. It examines equity issues involved in climate change and carbon trading through the REDD+ mechanism. Addressing its shortcomings without entering into deeper debates about the legitimacy of the market system in which most of us operate. A key assumption of this research is that the impending expiration of the Kyoto Protocol is bound with the expectation that any new international agreement on actions for addressing global climate change will include the development of REDD+ programmes.
Tipo: Tesis
Palavras-chave: ENVIRONMENT; CLIMATE CHANGE; REDUCING EMISSIONS; FOREST DEGRADATION; CONSERVATION; SUSTAINABLE DEVELOPMENT; FORESTS; HUMAN RIGHTS; CLIMATE SYSTEM; DEFORESTATION; INDIGENOUS PEOPLES; AMAZON??A; ECUADOR; MEDIO AMBIENTE; CAMBIO CLIM??TICO; REDUCCI??N DE EMISIONES; DEGRADACI??N DE LOS BOSQUES; CONSERVACI??N; DESARROLLO SUSTENTABLE; BOSQUES; DERECHOS HUMANOS; SISTEMA CLIM??TICO; DEFORESTACI??N; PUEBLOS IND??GENAS.
Ano: 2013
URL: http://hdl.handle.net/10469/5920

Una lectura de la reforma migratoria en Cuba (Coyuntura).
Provedor de dados: 122
Autores: Fiallo, Liliam.
El pasado 16 de octubre de 2012 fueron promulgadas en la Gaceta Oficial de la Rep??blica de Cuba No. 44 un conjunto de normas jur??dicas que introdujeron profundos cambios en la pol??tica migratoria cubana.
Tipo: Art??culo
Palavras-chave: MIGRACI??N; REFORMAS LEGALES; LEGISLACI??N; CUBA; MIGRATION; LEGAL REFORMS; LEGISLATION; POL??TICA MIGRATORIA; IMMIGRATION POLICY.
Ano: 2013
URL: http://hdl.handle.net/10469/5550

Influencia de los imaginarios del turismo sustentable : el caso del cant??n Puerto L??pez, Manab??
Provedor de dados: 122
Autores: Cupuer??n Arias, Edison Eduardo.
La presente investigaci??n se realiz?? en el cant??n Puerto L??pez, provincia de Manab??, trabajando espec??ficamente en el ??rea de influencia del Parque Nacional Machalilla (PNM), en el cual se trat?? de identificar los imaginarios de la sustentabilidad en la actividad tur??stica, a trav??s del an??lisis de los involucrados de forma directa en el turismo. Para el presente trabajo se decidi?? enfocarse en los participantes activos del turismo en esta ??rea, los cuales inclu??an a los habitantes del cant??n. Espec??ficamente se trabaj?? con las poblaciones y comunidades que se encuentran dentro de la zona de amortiguamiento del parque y que han desarrollado actividades tur??sticas, como complemento econ??mico a sus actividades tradicionales en los ??ltimos...
Tipo: Tesis
Palavras-chave: ECOTURISMO; CANT??N PUERTO L??PEZ; PROVINCIA DE MANAB??; ECUADOR; DESARROLLO SOSTENIBLE; PARQUE NACIONAL MACHALILLA; LEGISLACI??N.
Ano: 2013
URL: http://hdl.handle.net/10469/6181

La pol??tica en los bordes del liberalismo. Diferencia, populismo, revoluci??n, emancipaci??n de Benjam??n Arditi (Rese??as)
Provedor de dados: 122
Autores: Ulloa Tapia, C??sar.
Este libro de teor??a pol??tica, escrito con un enfoque interdisciplinario, profundiza y ampl??a la discusi??n entre el populismo y la democracia, sin el af??n de configurar esce??narios prescriptivos ni normativos, sino m??s bien de comprender lo que sucede en varios pa??ses, en donde la manera de entender y practicar la democracia liberal procedimen??tal est?? en proceso de reconfiguraci??n y hay una disputa por la hegemon??a entre diversos actores pol??ticos.
Tipo: Art??culo
Palavras-chave: RESE??A ACAD??MICA; POL??TICA; LIBERALISMO; POPULISMO; REVOLUCI??N; EMANCIPACI??N; ACADEMIC REVIEW; POLITICS; LIBERALISM; POPULISM; REVOLUTION; EMANCIPATION.
Ano: 2013
URL: http://hdl.handle.net/10469/5161

Jaqichasi??a matrimonial programa de matrimonios colectivos desde nuestra identidad : sus implicaciones conceptuales, discursivas y simb??licas en el Estado Plurinaci??n de Bolivia. Estudio en la comunidad de Amarete - La Paz, Bolivia.
Provedor de dados: 122
Autores: Guti??rrez Le??n, Lola.
El matrimonio y la familia son instituciones socialmente construidas. Son categor??as sociales objetivas y subjetivas al mismo tiempo, que permiten entender estructuras sociales, culturales, simb??licas y pol??ticas dentro de una sociedad. Tambi??n permiten develar aspectos que se dan desde los espacios m??s subjetivos y privados que inciden directamente en el espacio de lo p??blico; y tienen la fuerza de producir y reproducir un orden social hist??ricamente establecido. Es por eso que consideramos que la apuesta de esta investigaci??n intenta analizar c??mo los espacios personales e ??ntimos influyen en el proceso de construcci??n y reforma de un Estado que se refunda en el marco de la descolonizaci??n y la despatriarcalizaci??n.
Tipo: Tesis
Palavras-chave: BOLIVIA; LA PAZ; COMUNIDAD AMARETE; MATRIMONIOS COLECTIVOS; IDENTIDAD; IGLESIA; SEXUALIDAD; PACHAMAMA; FAMILIA; ESTADO; MARRIAGES TEAM; IDENTITY; CHURCH; SEXUALITY; FAMILY; STATE.
Ano: 2013
URL: http://hdl.handle.net/10469/5909

Letras Verdes [no. 13, marzo 2013. REVISTA COMPLETA]
Provedor de dados: 122
Autores: FLACSO Sede Ecuador, Programa de Estudios Socioambientales.
Una particularidad de la producci??n de conocimiento en el siglo XXI es la emergencia de campos e investigaciones que integran disciplinas para el estudio de problemas o temas espec??ficos. Uno de estos campos es la moderna ecolog??a urbana, que tiene como objetivos describir, interpretar e inclusive explicar el fen??meno urbano articulando teor??as y metodolog??as de las ciencias sociales, las ciencias exactas y biol??gicas, y las humanidades.  En ese amplio marco, en la presente edici??n incluimos dos art??culos de investigaci??n y uno de actualidad relacionados con la ecolog??a urbana. En el primer art??culo de investigaci??n, titulado "Relaci??n entre salud, educaci??n y ambiente: el rol de la educaci??n sanitaria y ambiental", Diana Sarrade analiza...
Tipo: Revista
Palavras-chave: ECOLOG??A URBANA; SALUD; EDUCACI??N SANITARIA; MEDIO AMBIENTE; CALIDAD DE VIDA; COMUNIDADES BIOL??GICAS; IMPACTO AMBIENTAL; QUITO; ECUADOR; MAR DEL PLATA; ARGENTINA; URBAN ECOLOGY; HEALTH; HEALTH EDUCATION; ENVIRONMENT; QUALITY OF LIFE; BIOLOGICAL COMMUNITIES; ENVIRONMENTAL IMPACT.
Ano: 2013
URL: http://hdl.handle.net/10469/5100

Relaciones entre salud, educaci??n y ambiente en Quito : el rol de educaci??n sanitaria y ambiental (Dossier)
Provedor de dados: 122
Autores: Sarrade Cobos, Diana.
Para analizar los desequilibrios ecol??gicos que afectan a una ciudad como Quito, marcada por un crecimiento urbano an??rquico y problemas de calidad ambiental, resulta interesante relacionar tres factores del Buen vivir: la salud, la educaci??n y el ambiente. Los v??nculos que pueden establecerse son numerosos. En esta reflexi??n, basada en estudios cient??ficos y pol??ticas p??blicas, hemos destacado dos aspectos concretos: la incidencia del medio en la salud de la poblaci??n y la posibilidad de reducir los riesgos sanitarios a trav??s de la educaci??n. El dinamismo econ??mico, pol??tico y cultural de la capital ecuatoriana podr??a fomentar la elaboraci??n de programas y acciones hacia una mejor educaci??n ambiental y sanitaria. ??Cu??les son las...
Tipo: Art??culo
Palavras-chave: AMBIENTE URBANO; EDUCACI??N; GESTI??N DE RIESGOS; CONTAMINACI??N; BUEN VIVIR; DESARROLLO SOCIAL; QUITO; ECUADOR; URBAN ENVIRONMENT; EDUCATION; RISK MANAGEMENT; POLLUTION; GOOD LIVING; SOCIAL DEVELOPMENT.
Ano: 2013
URL: http://hdl.handle.net/10469/5102

Prevenci??n de la criminalidad y la seguridad ciudadana : informe internacional 2012 (Rese??a)
Provedor de dados: 122
Autores: Betancourt Urresta, Andrea.
El Informe internacional sobre la prevenci??n de la criminalidad y la seguridad ciudadana 2012, preparado por el Centro International para la Prevenci??n de la Criminalidad (CIPC), aporta con el an??lisis de cuatro tem??ticas complejas, de din??micas nacionales e internacionales, y con graves impactos en la seguridad ciudadana a escala local. El reporte aborda actividades ilegales como la trata de personas y la producci??n de drogas; y contextos de asentamientos informales, de posconflicto y posdesastre. La CIPC revisa las tendencias m??s actuales de estos temas desde una perspectiva global y se enfoca en los impactos en la seguridad de las comunidades locales. Se incluyen estudios de caso sobre pa??ses relevantes para comprender mejor c??mo se...
Tipo: Art??culo
Palavras-chave: RESE??A ACAD??MICA; PREVENCI??N; SEGURIDAD CIUDADANA; CRIMINALIDAD; ACADEMIC REVIEW; PREVENTION; SAFETY; CRIME.
Ano: 2013
URL: http://hdl.handle.net/10469/5476

Pol??tica exterior minera argentina en el proyecto Pascua-Lama : de Menem a Cristina Fern??ndez de Kirchner, 1991-2012
Provedor de dados: 122
Autores: Diaz Gavier, Micaela.
La presente tesis realiza un estudio de la pol??tica exterior argentina en materia minera desde principios de los a??os ??90 (es decir, desde la implementaci??n de un modelo neoliberal a ultranzas) hasta el actual modelo post crisis del a??o 2001, con especial enfoque en el Proyecto Pascua - Lama. Se intentan dilucidar las variables cuya interacci??n explicar?? la actual coyuntura  argentina en esta materia.
Tipo: Tesis
Palavras-chave: POL??TICA EXTERIOR POL??TICA MINERA HISTORIA POL??TICA MENEM; CARLOS SA??L DE LA R??A; FERNANDO DUHALDE; EDUARDO A. KIRCHNER; N??STOR CARLOS FERN??NDEZ; CRISTINA ARGENTINA.
Ano: 2013
URL: http://hdl.handle.net/10469/5597

En el cruce de caminos : identidad, cosmovisión y chamanismo Tsáchila (Reseñas)
Provedor de dados: 122
Autores: Fiallo Monedero, Liliam.
En esta obra, Montserrat Ventura da cuenta de las limitaciones actuales de la etnología para estudiar a sociedades que se encuentran en el terreno intermedio entre ‘las tierras altas’ y ‘las tierras bajas’. Ante esta limitación disciplinar de los estudios antropológicos en el área, la autora recurre a una refinada metodología que parte de los cruces entre estos estudios dicotómicos, entendiendo tal situación como un “elemento constituyente de la lógica cultural indígena”.
Tipo: Artículo
Palavras-chave: RESEÑA ACADÉMICA; IDENTIDAD; COSMOVISIÓN; CHAMANISMO; GRUPOS ÉTNICOS; TSÁCHILAS; ECUADOR; ACADEMIC REVIEW; IDENTITY; SHAMANISM; ETHNIC GROUPS.
Ano: 2013
URL: http://hdl.handle.net/10469/4723

Presentaci??n
Provedor de dados: 122
Autores: Pont??n Cevallos, Jenny.
Si bien el debate de la despenalizaci??n es un tema abordado desde hace mucho tiempo, las propuestas surgidas en los ??ltimos a??os no parecen centrarse en el esp??ritu libertario de la elecci??n individual del consumo o la discusi??n moral respecto al real impacto de las drogas psicotr??picas en la salud p??blica.
Tipo: Art??culo
Palavras-chave: DESPENALIZACI??N; DROGAS PSICOTR??PICAS; GOBIERNO; AM??RICA LATINA; TR??FICO DE DROGAS; SALUD P??BLICA; DECRIMINALIZATION; DRUG PSYCHOACTIVE; GOVERNMENT; LATIN AMERICA; DRUG TRAFFICKING; PUBLIC HEALTH.
Ano: 2013
URL: http://hdl.handle.net/10469/5463

La prohibici??n de las drogas en M??xico (1912-1929) (Investigaci??n)
Provedor de dados: 122
Autores: Schievenini Stefanoni, Jos?? Domingo.
Este trabajo analiza una serie de dispositivos legales de aplicaci??n nacional relacionados con la prohibici??n de drogas, promulgados en M??xico entre 1912 y 1929. Este an??lisis se realiza en funci??n del contexto legislativo en el que cada uno de esos dispositivos fue elaborado, para, con ello, aproximarse a las razones hist??ricas por las cuales el Gobierno mexicano opt?? por prohibir (1920) y a??os despu??s por criminalizar (1929) medicamentos que antes ??l mismo regulaba. Este texto muestra c??mo la transformaci??n de las leyes en materia de drogas ocurrida en las primeras d??cadas del siglo XX fue influida por la presi??n y las tendencias internacionales, y muestra tambi??n c??mo esta transformaci??n fue parte de un proceso interno que se remonta al...
Tipo: Art??culo
Palavras-chave: DROGAS; NARC??TICOS; CONTRABANDO DE DROGAS; NARCOTRAFICANTES; LEGISLACI??N; M??XICO; DRUGS; NARCOTICS; CONTRABAND DRUGS; DRUG TRAFFICKERS; LEGISLATION.
Ano: 2013
URL: http://hdl.handle.net/10469/5467

Bibliografía seleccionada sobre migración residencial (Bibliografía)
Provedor de dados: 122
Referencias bibliográficas referidas al tema de migración residencial
Tipo: Artículo
Palavras-chave: BIBLIOGRAFÍA; MIGRACIÓN RESIDENCIAL; REFERENCES; MIGRATION RESIDENTIAL.
Ano: 2013
URL: http://hdl.handle.net/10469/5080

El exótico Hotel Marigold (Migración y cultura)
Provedor de dados: 122
Autores: Hernández Cervantes, Tania.
En la sección de Migración y cultura se alude a la película “El exótico Hotel Marigold”, del Director John Madden, que muestra la aventura de un grupo de jubilados ingleses que deciden vivir su retiro en Jaipur con la esperanza de encontrar mejores condiciones afectivas y de vida que en Gran Bretaña. Sin embargo, nada es como imaginaban, y los viajeros se encuentran en un escenario no previsto que en algunos momentos les incomoda y en otros les da esperanza.
Tipo: Artículo
Palavras-chave: CINE; MIGRACIÓN; JUBILADOS; CALIDAD DE VIDA; FILM; MIGRATION; RETIRED; QUALITY OF LIFE.
Ano: 2013
URL: http://hdl.handle.net/10469/5077

Una reforma migratoria largamente esperada (Coyuntura)
Provedor de dados: 122
Autores: Cuadra, Elvira.
En el artículo de Elvira Cuadra de la sección Coyuntura, se aborda la situación actual de la reforma migratoria integral en Estados Unidos impulsada por el presidente Barack Obama. Esta sección busca dimensionar las contradicciones e implicaciones políticas de dicha reforma, así como la importancia y el alcance que tendría para los casi once millones de migrantes irregulares de ese país.
Tipo: Artículo
Palavras-chave: MIGRACIÓN; REFORMA MIGRATORIA; ESTADOS UNIDOS; LEGISLACIÓN; LEGALIZACIÓN DE INDOCUMENTADOS; MIGRATION; INMIGRATION REFORM; UNITED STATES; LEGISLATION; PROBATE OF UNDOCUMENTED.
Ano: 2013
URL: http://hdl.handle.net/10469/5079

Pluralismo jur??dico en el Ecuador : estudio de caso sobre aplicaci??n de la justicia ind??gena en resoluci??n de conflictos de tierras
Provedor de dados: 122
Autores: Gudi??o Cisneros, Elena Patricia.
Este trabajo es una descripci??n monogr??fica del estudio del caso Kutukachi, relativo a la aplicaci??n de los sistemas de justicia ind??gena en conflictos socio ambientales, espec??ficamente en conflictos de tierras y territorios. Como tal se propone aportar al conocimiento de la situaci??n actual de la aplicaci??n de dichos sistemas de justicia, que aparece como controvertida, por las profundas tensiones y pugna de intereses al interior de la propia nacionalidad Kichwa, as?? como en relaci??n a la racionalidad jur??dica inherente al sistema de justicia ordinaria.
Tipo: Tesina
Palavras-chave: ECUADOR; JUSTICIA IND??GENA; PLURALISMO JUR??DICO; CONFLICTOS DE TIERRAS; TERRITORIO; TENENCIA DE TIERRAS; COMUNIDADES IND??GENAS; INDIAN JUSTICE; LEGAL PLURALISM; LAND CONFLICTS; TERRITORY; LAND TENURE; INDIGENOUS COMMUNITIES.
Ano: 2013
URL: http://hdl.handle.net/10469/5799

De pibes rebeldes a sujetos de derecho : definici??n de las y los j??venes y el desarrollo de institucionalidad juvenil en el estado local : estudio de caso
Provedor de dados: 122
Autores: Pereyra, Eduardo Javier.
El objetivo central de esta tesis es analizar y comprender las conceptualizaciones y visiones  sobre las juventudes a trav??s de las pol??ticas p??blicas juveniles que dise???? e implement?? la Municipalidad de Jes??s Mar??a, provincia de C??rdoba, durante la gesti??n de Marcelino Gatica como Secretario de Gobierno a finales de 2002 y sus posteriores mandatos como intendente entre el periodo 2003-2011.  Nos centraremos en las pol??ticas de juventud en el nivel de la administraci??n dedicado  espec??ficamente en problemas de juventud: centrando el estudio sobre los Organismos  Gubernamentales de Juventud, entendiendo este nivel como las pol??ticas de juventud en sentido estricto. Para el an??lisis de las pol??ticas, se adopta el enfoque constructivista y...
Tipo: Tesis
Palavras-chave: POL??TICAS DE JUVENTUD; INSTITUCIONES; ROL DEL ESTADO; ARGENTINA; JES??S MAR??A [C??RDOBA].
Ano: 2013
URL: http://hdl.handle.net/10469/5588

Estudio comparativo de los efectos del conflicto armado sobre el desarrollo humano en Colombia y Sud??n entre 2000 y 2010
Provedor de dados: 122
Autores: Villac??s Izquierdo, Gabriela Ver??nica.
El desarrollo humano concebido en t??rminos de expansi??n de las oportunidades y libertades que tiene un ser humano, seg??n AmartyaSen, es el punto de partida utilizado para examinar la situaci??n que atraviesan dos pa??ses de distintas regiones del mundo: Colombia (Am??rica Latina) y Sud??n (??frica). A pesar de pa??ses con estructuras diferentes y distantes comparten la realidad com??n de un prolongado conflicto armado, raz??n por la cual el presente trabajo de investigaci??n presenta de forma comparada estos dos casos de estudio con el fin de comprender c??mo incide la presencia de violencia armada en el desarrollo humano. A trav??s del an??lisis del desempe??o del ??ndice de Desarrollo Humano de Sud??n y Colombia en el per??odo temporal 2000 a 2010 se...
Tipo: Tesis
Palavras-chave: COLOMBIA; SUD??N; CONFLICTOS ARMADOS; DESARROLLO HUMANO; ECONOM??A POL??TICA INTERNACIONAL; VIOLENCIA; REFUGIADOS; RECLUTAMIENTO FORZADO; NI??OS; MUJERES; ARMED CONFLICT; HUMAN DEVELOPMENT; INTERNATIONAL POLITICAL ECONOMY; VIOLENCE; REFUGEES; FORCED RECRUITMENT; CHILDREN; WOMEN.
Ano: 2013
URL: http://hdl.handle.net/10469/5898

Miner??a y conflicto social en la provincia de Buenos Aires (Dossier)
Provedor de dados: 122
Autores: Girado, Agustina.
La vigencia del modelo minero extractivo-exportador, desarrollado en Argentina a la luz de las pol??ticas neoliberales en la d??cada de 1990, es resistida por diversas comunidades locales, quienes cuestionan tanto las narrativas hegem??nicas del discurso neodesarrollista actual, como las representaciones gubernamentales y empresariales existentes en torno al uso y explotaci??n del territorio y medio ambiente. Desde la perspectiva de la Antropolog??a Social el presente art??culo reflexiona  respecto a la conflictividad social generada en dos ciudades medias de la provincia de Buenos Aires (Tandil y Olavarr??a) en relaci??n a la explotaci??n minera canteril del Sistema Serrano de Tandilia. Al mismo tiempo posibilita debatir, por un lado, el lugar diferencial...
Tipo: Art??culo
Palavras-chave: PROVINCIA DE BUENOS AIRES; ARGENTINA; MINER??A; POL??TICAS NEOLIBERALES; ANTROPOLOG??A SOCIAL; COMUNIDADES LOCALES; TERRITORIO; MEDIO AMBIENTE; CONFLICTOS SOCIALES; GOBIERNO; SISTEMA SERRANO DE TANDILIA; EXPLOTACI??N CANTERIL; CONFLICTOS SOCIOAMBIENTALES; TANDIL; OLAVARR??A.
Ano: 2013
URL: http://hdl.handle.net/10469/5970

La seguridad perversa : pol??tica, democracia y derechos humanos en Ecuador 1998-2006 (Rese??a)
Provedor de dados: 122
Autores: Guerrero Salgado, Gilda Alicia.
El libro de Fredy Rivera V??lez, La seguridad perversa, se ocupa efectivamente de esta nueva visi??n multidimensional de la seguridad.  Cuando el Estado naci??n se ve enfrentado a varios peligros que amenazan su integridad, estatus y fortaleza dentro de sus fronteras y a nivel externo, la estructura estatal tiene la opci??n de la fuerza directa, pero tambi??n de otro tipo de acciones, como la segurizaci??n.
Tipo: Art??culo
Palavras-chave: RESE??A ACAD??MICA; SEGURIDAD NACIONAL; POL??TICA; DEMOCRACIA; DERECHOS HUMANOS; ECUADOR; ACADEMIC REVIEW; NATIONAL SECURITY; POLICY; DEMOCRACY; HUMAN RIGHTS.
Ano: 2013
URL: http://hdl.handle.net/10469/5475

M??s all?? de la ayuda : una nueva m??trica de la ayuda oficial al desarrollo post-2015 (Dossier)
Provedor de dados: 122
Autores: Dom??nguez Mart??n, Rafael.
El trabajo trata de responder a la pregunta ??en qu?? va a consistir despu??s de 2015 la idea de m??s all?? de la ayuda, que en su origen estaba asociada a la coherencia de pol??ticas? Tras analizar el nuevo contexto de fatiga de la ayuda oficial al desarrollo (AOD) y la crisis de identidad del r??gimen de ayuda, se repasan las distintas m??tricas propuestas de cara a la redefinici??n del concepto de AOD despu??s de 2015, que en ning??n caso parece tendr?? que ver con la idea inicial de la coherencia de pol??ticas, sino m??s bien con un intento de los donantes tradicionales europeos de maquillar su fracaso en el cumplimiento del compromiso del 0,7 del PNB y de flexibilizar criterios con el fin (bastante incierto) de atraer a las disciplinas del Comit?? de...
Tipo: Art??culo
Palavras-chave: AYUDA OFICIAL AL DESARROLLO (AOD); COOPERACI??N AL DESARROLLO; COOPERACI??N SUR - SUR; POL??TICA INTERNACIONAL; FINANCIAMIENTO; DESARROLLO ECON??MICO; OFFICIAL DEVELOPMENT ASSISTANCE (ODA); DEVELOPMENT COOPERATION; SOUTH-SOUTH COOPERATION; INTERNATIONAL POLICY; FINANCING; ECONOMIC DEVELOPMENT.
Ano: 2013
URL: http://hdl.handle.net/10469/5564

Bibliograf??a seleccionada sobre migraci??n cubana y flujos intra-regionales (Bibliograf??a).
Provedor de dados: 122
Bibliograf??a especializada sobre: migraci??n cubana, flujos migratorios intra-regionales desde Cuba hacia Am??rica del Sur y Am??rica Latina en general.
Tipo: Art??culo
Palavras-chave: BIBLIOGRAF??A; MIGRACI??N CUBANA; FLUJOS MIGRATORIOS INTRA-REGIONALES; AM??RICA DEL SUR; AM??RICA LATINA; REFERENCES; CUBAN MIGRATION; INTRA-REGIONAL MIGRATION FLOWS; SOUTH AMERICA; LATIN AMERICA.
Ano: 2013
URL: http://hdl.handle.net/10469/5551

Calidad de vida y comunidades biol??gicas : an??lisis del estudio de impacto ambiental del metro en la ciudad de Quito (Actualidad)
Provedor de dados: 122
Autores: Aguilar, Cristina; Guerrero, Lorena; L??pez, Eduardo; Rodr??guez, Marcelo; Scarpacci, Mart??n.
Este trabajo presenta una revisi??n cr??tica del Informe de Impacto Ambiental del Metro de Quito, en sus variables ???calidad de vida??? y ???comunidades biol??gicas???. Desde una perspectiva ecosist??mica de comprensi??n y explicaci??n de la ciudad, observamos que en el informe se sostiene una visi??n reduccionista de la dimensi??n ambiental. Asumiendo que el Metro constituye una mejora en los procesos de movilidad urbana, se argumenta que este proyecto es una oportunidad para generar instancias de promoci??n y articulaci??n de la biodiversidad en la ciudad. Se discute la necesidad de contrarrestar la subsidiaridad del enfoque ambiental en la producci??n y reproducci??n de la ciudad.
Tipo: Art??culo
Palavras-chave: BIODIVERSIDAD; CALIDAD DE VIDA; ECOSISTEMAS; ESPACIO URBANO; MOVILIDAD URBANA; COMUNIDADES BIOL??GICAS; IMPACTO AMBIENTAL; METROBUS; SISTEMAS DE TRANSPORTE; QUITO; ECUADOR; BIODIVERSITY; QUALITY OF LIFE; ECOSYSTEM; URBAN SPACE; URBAN MOBILITY; BIOLOGICAL COMMUNITIES; ENVIRONMENTAL IMPACT; TRANSPORT SYSTEMS.
Ano: 2013
URL: http://hdl.handle.net/10469/5105

Agrocombustibles y cultivos transg??nicos : un binomio que fomenta la p??rdida de soberan??a alimentaria (Ensayo)
Provedor de dados: 122
Autores: Espinosa Manrique, Milena.
A fin de aproximarse a una comprensi??n de la amenaza que representan tanto los agrocombustibles como los transg??nicos para la soberan??a alimentaria, este ensayo revisa algunos planteamientos en relaci??n con las din??micas asociadas a estas propuestas y los conflictos socioambientales que generan. En primera instancia, se definen algunos conceptos claves; luego, se hace una revisi??n general del contexto de la producci??n de agrocombustibles y la expansi??n de transg??nicos, las perspectivas y los riesgos de este binomio; a continuaci??n, se estudian brevemente los efectos en la soberan??a alimentaria del modelo agroenerg??tico y transg??nico en el escenario latinoamericano, a trav??s del caso de Argentina, la cual se proyecta como un importante...
Tipo: Art??culo
Palavras-chave: ARGENTINA; AGROCOMBUSTIBLES; CULTIVOS TRANSG??NICOS; SOBERAN??A ALIMENTARIA; CONFLICTOS SOCIOAMBIENTALES; AM??RICA LATINA; AGROENERG??A; CULTIVOS DE SOYA; EXPORTACIONES; PEQUE??OS AGRICULTORES; CONSUMIDORES; IMPORTACIONES; PRODUCTOS B??SICOS; DEPENDENCIA ECON??MICA; INSUMOS AGR??COLAS; CONFLICTOS TERRITORIALES; DIVERSIDAD AGR??COLA.
Ano: 2013
URL: http://hdl.handle.net/10469/5966

Mestizaje montubio : rompiendo y manteniendo esquemas (Tema Central)
Provedor de dados: 122
Autores: Roitman, Karem.
El aparecimiento de la identidad montubia a comienzos del siglo XXI plantea una complejizaci??n de las definiciones ??tnicas en la costa ecuatoriana. En la perspectiva de las ??lites guayaquile??as, el reconocimiento a los montubios permite afirmar una identidad local guayaquile??a tambi??n cimentada en la inmigraci??n extranjera. Cuando se sit??a a los montubios en el plano rural, no intimidan a las elites socioecon??micas a diferencia del movimiento ind??gena que se presenta como una amenaza.
Tipo: Art??culo
Palavras-chave: IDENTIDAD; MONTUBIOS; ETNICIDAD; MESTIZAJE; IDENTITY; ETHNICITY; MISCEGENATION; ECUADOR.
Ano: 2013
URL: http://hdl.handle.net/10469/5400

La literatura y la historia en debate : la discusi??n del canon en el campo literario y el campo historiogr??fico argentinos, 2003 - 2010
Provedor de dados: 122
Autores: Tobe??a, Ver??nica.
La tesis se propone analizar el modo en que el campo literario argentino y la   historiograf??a argentina discuten la consagraci??n de sus productos; indaga en  las din??micas y los valores que se despliegan en las disputas por integrar el  canon de cada una de dichas disciplinas durante la primera d??cada del siglo  XXI. Para ello, la investigaci??n hace foco en la prensa grafica nacional, espec??ficamente en el suplemento cultural ?? para el caso de la literatura, y en  los diarios Clar??n, La Naci??n y P??gina/12 para el de la historia. El estudio no  s??lo se propone indagar c??mo se discute el canon en la literatura y la historiograf??a argentinas sino que tambi??n apunta a insertar esta discusi??n en la trama simb??lica que la conforma, dando cuenta...
Tipo: Tesis
Palavras-chave: HISTORIOGRAF??A LITERATURA VARGAS LLOSA; MARIO WALSH; RODOLFO BORGES; JORGE LUIS SORIANO; OSVALDO HISTORIA ARGENTINA.
Ano: 2013
URL: http://hdl.handle.net/10469/5284

Hegemon??as culturales e impertinencias tecnol??gicas : reflexiones en torno a la potencial introducci??n de transg??nicos en el agro ecuatoriano (Debate Agrario-Rural)
Provedor de dados: 122
Autores: Cuvi, Nicol??s.
El debate sobre el uso e investigaci??n de organismos gen??ticamente modificados (transg??nicos) fue reabierto a nivel nacional por el gobierno ecuatoriano en septiembre de 2012. Con base en ejemplos hist??ricos del pa??s, y del an??lisis de opiniones a favor y en contra del uso de transg??nicos, en este art??culo se reflexiona c??mo la introducci??n de estos organismos perpetuar?? un secular modelo de apuesta por modos de producir que acent??an las inequidades e inseguridades nacionales, y generar?? impactos negativos, de ??ndole tecnol??gica, social, econ??mica y ambiental, en las zonas rurales. Se propone la agroecolog??a como alternativa para un desarrollo tecnol??gico pertinente.
Tipo: Art??culo
Palavras-chave: TRANSG??NICOS; MEDIO AMBIENTE; AGRICULTURA; BIOTECNOLOG??A; AGROECOLOG??A; TRANSGENIC; ENVIRONMENT; AGRICULTURE; BIOTECHNOLOGY; AGROECOLOGY; ECUADOR.
Ano: 2013
URL: http://hdl.handle.net/10469/5408

Proceso organizativo del campesinado en el sur de Manabí y desarrollo rural (Temas)
Provedor de dados: 122
Autores: Guerrero C., Fernando.
Este artículo aborda el proceso organizativo del campesinado en el marco general del desarrollo rural de los últimos treinta años en la microregión del sur de Manabí, MSM. Se constata que a lo largo de las últimas décadas –del setenta en adelante– los campesinos de dicha microregión, a través de sus organizaciones de base y de segundo grado, han demostrado una gran capacidad de adaptación a los cambios económicos y, por otra parte, cierto margen de respuesta e incluso de resistencia ante los procesos de “intervención del desarrollo”. Las organizaciones campesinas manabitas, ante la crisis de la producción y exportación del café acudieron a la diversificación de las fincas, al cultivo de ciclo corto, a la pluriactividad y a la emigración, así como a la...
Tipo: Artículo
Palavras-chave: DESARROLLO RURAL; CAMPESINOS; ORGANIZACIONES CAMPESINAS; POLÍTICAS AGRARIAS; COMUNIDADES RURALES; MANABÍ; ECUADOR; RURAL DEVELOPMENT; FARMERS; FARMERS ORGANISATIONS; AGRICULTURAL POLICIES; RURAL COMMUNITIES.
Ano: 2013
URL: http://hdl.handle.net/10469/4718

Mujeres cineastas en Quito : experiencias de producci??n y pr??cticas narrativas
Provedor de dados: 122
Autores: Mancero Giler, Tannia Priscila.
En la ciudad de Quito residen cuatro cineastas autoras de documentales realizados entre la segunda mitad de la d??cada 2000 y la primera mitad de la d??cada 2010. A partir de estas pel??culas, estas mujeres cineastas se han constituido como referentes del cine local y nacional. As??, es posible identificar una presencia marcada de mujeres en el documental desde el ??mbito de la producci??n hasta el de la direcci??n, pasando por varias de las tareas que implica la realizaci??n de cine. La presente investigaci??n est?? enmarcada en el an??lisis de todos estos elementos y busca explicar c??mo las mujeres hacen cine, c??mo se constituyen como creadoras cinematogr??ficas y cu??les son las pr??cticas narrativas que est??n presentes en su cine.
Tipo: Tesis
Palavras-chave: ECUADOR; DISTRITO METROPOLITANO DE QUITO; MUJERES CINEASTAS; CINE DOCUMENTAL; PRODUCCI??N AUDIOVISUAL; INDUSTRIA CULTURAL; MEMORIA; PRODUCCI??N DOCUMENTAL.
Ano: 2013
URL: http://hdl.handle.net/10469/5948

Ecuador Debate [no. 88, abril 2013. REVISTA COMPLETA]
Provedor de dados: 122
Autores: Centro Andino de Acci??n Popular (CAAP).
Este n??mero de Ecuador Debate est?? dedicado a las identidades, un tema que tom?? significativa relevancia en los a??os noventa con las demandas ??tnicas y posteriormente de otros actores que reivindicaban la diferencia.  Las ciencias sociales produjeron muchas interpretaciones junto a la eclosi??n de discursos identitarios sostenidos desde los movimientos sociales y ??tnicos.  Esto es lo que se llam?? la politizaci??n de las identidades que derivaron en reformas constitucionales, la acci??n afirmativa y la introducci??n de identificaciones raciales en los censos de poblaci??n. No obstante, es necesario dar una nueva mirada sobre los modos en que se producen las identidades tal como sugieren los art??culos reunidos en el Tema Central.
Tipo: Revista
Palavras-chave: ETNICIDAD; IDENTIDAD; REVOLUCI??N CIUDADANA; ELECCIONES; TRANSG??NICOS; FEMINIZACI??N; BUEN VIVIR; DESARROLLO; ETHNICITY; IDENTITY; CITIZEN REVOLUTION; ELECTIONS; TRANSG??NIC; FEMINIZATION; GOOD LIVING; DEVELOPMENT; GUAYAQUIL; ECUADOR; CATALU??A; ESPA??A; PER??.
Ano: 2013
URL: http://hdl.handle.net/10469/5401

Din??mica de la distribuci??n de la renta en las provincias de Ecuador : un an??lisis no param??trico
Provedor de dados: 122
Autores: Betancourt Celi, Mar??a Helena.
El objetivo de esta investigaci??n es evidenciar procesos de convergencia entre las provincias del Ecuador. Para el efecto, se llev?? a cabo un detallado an??lisis te??rico y metodol??gico de su definici??n y de sus formas de medici??n, mediante las t??cnicas de an??lisis descriptivo, como son las herramientas de dispersi??n de la sigma convergencia; el an??lisis continuo, a trav??s de las distribuciones del kernel estoc??stico en dos y tres dimensiones; y finalmente, el an??lisis discreto, mediante las cadenas de Markov. Las principales conclusiones del presente trabajo de investigaci??n es que no existe convergencia en el Ecuador. Adicionalmente, las probabilidades del estado estacionario muestran que las diferencias en el ingreso per c??pita a nivel...
Tipo: Tesis
Palavras-chave: ECUADOR; DISTRIBUCI??N DEL INGRESO; ECONOM??A; MODELOS ECON??MICOS; CALIDAD DE VIDA; TOMA DE DECISIONES; POL??TICA ECON??MICA; CADENAS DE MARKOV.
Ano: 2013
URL: http://hdl.handle.net/10469/5944

Mujeres ind??genas en Am??rica Latina: pol??tica y pol??ticas p??blicas de Esther del Campo (ed.) (Rese??as)
Provedor de dados: 122
Autores: Eichert, Sara.
Al revisar esta obra lectores y lectoras se deber??an plantear si en Am??rica Latina nos hallamos ante democracias inclu??sivas y deber??an preguntarse c??mo se constru??yen ??stas, qui??nes son sus actores estrat??gicos y qui??nes participan en mayor medida. Res??pecto al colectivo de las mujeres (ind??genas y no ind??genas) no cabe duda de que la calidad de la democracia en la regi??n depender?? par-cialmente del grado en que se incluyan y tra??duzcan sus demandas. Todo ello sin que estos colectivos pierdan su autonom??a ni su visibili??dad y sin olvidar, claro, las heterogeneidades culturales y ??tnicas en la regi??n. Por ello, de c??mo se dise??en e implementen las pol??ticas p??blicas en los ??mbitos econ??mico, pol??tico y social depender?? en buena...
Tipo: Art??culo
Palavras-chave: RESE??A ACAD??MICA; MUJERES IND??GENAS; AM??RICA LATINA; POL??TICA; POL??TICAS P??BLICAS; ACADEMIC REVIEW; INDIGENOUS WOMEN; LATIN AMERICA; POLITICS; PUBLIC POLICY.
Ano: 2013
URL: http://hdl.handle.net/10469/5162

Una nueva migración económica : el arbitraje geográfico de los jubilados estadounidenses hacia los países andinos (Dossier central)
Provedor de dados: 122
Autores: Hayes, Matthew F.
El Dossier central trata de una investigación realizada en la zona austral del Ecuador que pone en evidencia cómo los cambios socioeconómicos del norte inciden fuertemente en la decisión de los adultos mayores norteamericanos de mudarse a vivir en Cuenca u otras ciudades y pequeños pueblos andinos. A la crisis estadounidense y canadiense debe sumarse un creciente mercado que oferta el retiro en los Andes como una alternativa que permite a este tipo de migrantes mantener su nivel de vida, cosa que sus países de origen ya no pueden garantizarles, así como residir en un lugar que aparentemente les brinda una vida más sana, tranquila, y una ‘auténtica’ experiencia étnico-cultural. El artículo hace un interesante recorrido por la literatura existente sobre la...
Tipo: Artículo
Palavras-chave: CAMBIOS SOCIOECONÓMICOS; MIGRACIÓN NORTE - SUR; JUBILADOS; CALIDAD DE VIDA; MOVILIDAD SOCIAL; CUENCA; ECUADOR; ESTADOS UNIDOS; CANADÁ; SOCIOECONOMIC CHANGES; MIGRATION NORTH - SOUTH; RETIRED; QUALITY OF LIFE; SOCIAL MOBILITY; UNITED STATES.
Ano: 2013
URL: http://hdl.handle.net/10469/5076

La infancia transnacional y el debate en torno a la "cadena del cuidado" (An??lisis)
Provedor de dados: 122
Autores: Rohr, Elisabeth.
La migraci??n femenina internacional requiere ser entendida en su complejidad integrando el mundo familiar involucrado puesto que la separaci??n de los hijos deja huellas ps??quicas duraderas. Para quienes son dejados atr??s se presenta una p??rdida de lazos emocionales que no pueden ser cubiertos por las familias sustitutas. La comprensi??n del ??mbito emocional y desarrollo psicol??gico de las experiencias de separaci??n en los ni??os necesita adentrarse en sus conflictos.
Tipo: Art??culo
Palavras-chave: MIGRACI??N; MUJERES; PSICOLOG??A INFANTIL; REMESAS; MIGRATION; WOMEN; CHILD PSYCHOLOGY; REMITTANCES; ECUADOR; FAMILIA; FAMILY; TRANSNACIONALISMO; TRANSNATIONALISM.
Ano: 2013
URL: http://hdl.handle.net/10469/5410

Andina Migrante [no. 15, abril 2013. BOLETÍN COMPLETO]
Provedor de dados: 122
Autores: FLACSO sede Ecuador. Programa de Sociología, Sistema de Información sobre Migraciones Andinas.
El boletín AndinaMigrante número 15 analiza la movilidad de jubilados y ‘expatriados’ desde algunos países del norte hacia el sur, particularmente desde Canadá y Estados Unidos hacia los Andes.
Tipo: Boletín
Palavras-chave: MIGRACIÓN; ECONOMÍA; JUBILADOS; LEGISLACIÓN; MIGRACIÓN RESIDENCIAL; ESTADOS UNIDOS; AMÉRICA LATINA; MIGRATION; ECONOMY; RETIRED; LEGISLATION; RESIDENTIAL MIGRATION; UNITED STATES; LATIN AMERICA; CANADÁ.
Ano: 2013
URL: http://hdl.handle.net/10469/5075

Autorizar una voz para desautorizar un cuerpo : producción discursiva del lesbianismo feminista oficial (Dossier)
Provedor de dados: 122
Autores: Ramírez Mateus, Ana Lucía; Castellanos Leal, Diana Elizabeth.
El presente documento se propone reconocer el lesbianismo feminista como una producción discursiva, inserta en relaciones de poder y agenciamientos que operan de modo evidente en sus discursos ‘oficiales’ y desde sus voces autorizadas. Se realizará un análisis crítico de una selección de distintos discursos, producidos por voces autorizadas del lesbianismo feminista latinoamericano y del Caribe, con la intención de develar cómo desde estos discursos, la experiencia y los cuerpos trans se han constituido en el ‘afuera’ del lesbianismo feminista. Esto es como límite de lo posible, imaginable y deseable al interior del Encuentro Lésbico Feminista de América Latina y el Caribe (ELFLAC) que se realiza anualmente.   Finalmente, el artículo se enfocará en las...
Tipo: Artículo
Palavras-chave: FEMINISMOS SUJETOS SUBALTERNIZADOS LESBIANISMO FEMINISTA TRANGÉNERO LESBIANAS; BISEXUALES; TRANSGÉNERO; INTERSEX (LBTI) ENCUENTRO LÉSBICO FEMINISTA DE AMÉRICA LATINA Y EL CARIBE (ELFLAC) FEMINISM SUBALTERNIZED SUBJECTS LESBIAN FEMINISM TRANSGENDER.
Ano: 2013
URL: http://hdl.handle.net/10469/4715

Inversi??n extranjera directa sectorial y corrupci??n: evidencia de los pa??ses sudamericanos para el per??odo 2000-2010
Provedor de dados: 122
Autores: Castello, Andr??s Leonardo.
Los flujos de Inversi??n Extranjera Directa (IED) son un fen??meno con importante incidencia en la forma en que se desarrolla el proceso de globalizaci??n y a su vez poseen  un impacto no menor en el desarrollo econ??mico de los pa??ses receptores de los mismos. En base a esa importancia y a la gran profundizaci??n de la globalizaci??n econ??mica ocurrido en los ??ltimos 30 a??os, son numerosos los estudios que se han centrado en encontrar cuales son las variables determinantes que influyen en este tipo de flujos y cuantificar su impacto. Un campo importante dentro de dichos estudios desarrollados mayormente durante las d??cada de 1990, son aquellos que intentaron medir el impacto de la corrupci??n, entendida como el aprovechamiento de una posici??n...
Tipo: Tesis
Palavras-chave: DESARROLLO ECON??MICO; CORRUPCI??N; INVERSIONES EXTRANJERAS; GLOBALIZACI??N; AM??RICA DEL SUR.
Ano: 2013
URL: http://hdl.handle.net/10469/5602

Ca??das presidenciales en Ecuador : la pol??tica de los actores
Provedor de dados: 122
Autores: Lucio Naranjo, Bol??var Ignacio.
Entre 1997 y 2005 tres presidentes que triunfaron en elecciones regulares fueron destituidos de sus cargos. Cada caso estuvo precedido del deterioro de la autoridad leg??tima del presidente y evidenci?? -en el m??s intenso momento de la crisis- la imposibilidad de que el presidente siguiera representando a quienes lo hab??an elegido. En las ca??das participaron tres actores pol??ticos: un grupo que ocup?? el espacio p??blico y afect?? la estabilidad del r??gimen; los militares que replicaban la demanda de los actores movilizados y relocalizaron el centro del poder pol??tico; finalmente, los legisladores que recompusieron el desv??o provocado por la coyuntura.
Tipo: Tesis
Palavras-chave: ECUADOR BUCARAM; ABDAL?? MAHUAD; JAMIL GUTI??RREZ; LUCIO CA??DAS PRESIDENCIALES MOVILIZACIONES SOCIALES PARTIDOS POL??TICOS INESTABILIDAD SOCIAL POPULISMO POL??TICA CRISIS ECON??MICA PRESIDENTIAL FALLEN SOCIAL MOBILIZATIONS POLITICAL PARTIES SOCIAL INSTABILITY POPULISM POLICY ECONOMIC CRISIS.
Ano: 2013
URL: http://hdl.handle.net/10469/5856

El video y la lucha pol??tico-social del pueblo nasa : intervenir la realidad a trav??s de la apropiaci??n y el uso de tecnolog??as de la comunicaci??n
Provedor de dados: 122
Autores: Galeano Yunda, Juan Paulo.
En el marco de la globalizaci??n medi??tica y econ??mica, desde hace algunas d??cadas empezaron a surgir contenidos en las redes televisivas y acciones de protesta en distintos lugares del planeta que daban cuenta de grupos poblacionales y sociales que por primera vez se hac??an visibles al mundo, y llamaron su atenci??n porque tra??an ideas inconformes y contradictorias sobre el confortable sistema econ??mico y social vigente. La mayor??a de estos grupos correspond??a a minor??as ??tnicas y sociales que sabiendo aprovechar las, para entonces, nuevas tecnolog??as de la informaci??n y de la comunicaci??n, hac??an presencia y transmit??an sus mensajes, cargados de reflexiones pol??ticas, sociales y ambientales.
Tipo: Tesis
Palavras-chave: COLOMBIA; DEPARTAMENTO DEL CAUCA; PUEBLO NASA; LUCHA POL??TICA; SOCIEDAD; TECNOLOG??AS DE INFORMACI??N Y COMUNICACI??N (TICS); TECNOLOG??AS AUDIOVISUALES; ANTROPOLOG??A VISUAL; COMUNIDADES IND??GENAS; ASOCIACI??N DE CABILDOS IND??GENAS (ACIN); POL??TICAS P??BLICAS; IM??GENES; VIDEO; PRODUCCI??N AUDIOVISUAL; INTERCULTURALIDAD; POLITICAL FIGHT; SOCIETY; INFORMATION AND COMMUNICATION TECHNOLOGIES; AUDIOVISUAL TECHNOLOGIES; INDIGENOUS COMMUNITIES; PUBLIC POLICY; IMAGES; AUDIOVISUAL PRODUCTION.
Ano: 2013
URL: http://hdl.handle.net/10469/5804

??Por qu?? no se despenalizan las drogas? : razones de la vigencia de una pol??tica fallida (Investigaci??n)
Provedor de dados: 122
Autores: Pont??n Cevallos, Daniel.
El presente trabajo analiza las actuales propuestas en torno a la despenalizaci??n y legalizaci??n de las drogas psicotr??picas discutidas con mucho ??nfasis por autoridades y opini??n p??blica. Se argumentar?? que si bien es un avance importante hacer que el poder pol??tico discuta y cuestione abiertamente la prohibici??n de las drogas a nivel mundial, la variedad de propuestas presentadas se enfrentan a inconsistencias t??cnicas que hacen inviable una tesis de este estilo para los fines planteados. Por el contrario, el tema sobre el prohibicionismo debe ser ubicado y mirado como un problema de alto espectro geopol??tico mundial, lo cual impide una posible superaci??n de este paradigma en el corto, mediano y largo plazo.
Tipo: Art??culo
Palavras-chave: GEOPOL??TICA; DESPENALIZACI??N; HEGEMON??A; LEGALIZACI??N; DROGAS PSICOTR??PICAS; ECONOM??AS CRIMINALES; NARCOTR??FICO; GEOPOLITICS; DECRIMINALIZATION; HEGEMONY; LEGALIZATION; PSYCHOTROPIC DRUGS; CRIMINAL ECONOMIES; DRUG TRAFFICKING.
Ano: 2013
URL: http://hdl.handle.net/10469/5466

Acci??n colectiva y cadenas de valor. Estudio de caso : cadena de cacao y UNOCACE
Provedor de dados: 122
Autores: Troya Rocha, Mar??a Bel??n.
la tesis expone un an??lisis de la cadena de valor del cacao, en su contexto internacional - nacional, y de la cadena de valor de una organizaci??n de segundo grado, como UNOCACE, en un marco de tiempo de diez a??os (2002 ??? 2012). Los elementos de estudio se basaron en la metodolog??a de acci??n colectiva de Julio Berdegu?? y la plataforma RURALTER. Con el fin de exponer el rol determinante de la acci??n colectiva en las cadenas productivas. Dentro del an??lisis se identific?? que las condiciones normativas asociativas favorecen a la creaci??n y fortalecimiento de este tipo de organizaciones, bajo un enfoque de emprendimiento rural con regulaci??n propia para hacerlo.
Tipo: Tesis
Palavras-chave: ECUADOR; CADENAS DE VALOR; ASOCIACIONES RURALES; COSTOS DE PRODUCCI??N; IDENTIDAD LOCAL; PRODUCCI??N DE CACAO; UNI??N DE ORGANIZACIONES CAMPESINAS CACAOTERAS (UNOCACE); PROVINCIA DEL GUAYAS; VALUE CHAIN; RURAL ASSOCIATIONS; PRODUCTION COSTS; LOCAL IDENTITY; CACAO PRODUCTION.
Ano: 2013
URL: http://hdl.handle.net/10469/5851

Eutop??a. Revista de Desarrollo Econ??mico Territorial [no.4, octubre 2013. REVISTA COMPLETA]
Provedor de dados: 122
Autores: FLACSO Sede Ecuador; Comit?? Ecuatoriano de Desarrollo Econ??mico y Territorial (CEDET).
En este n??mero de EUTOP??A, se aborda el tema de los cambios que experimenta el trabajo en los territorios rurales, sin duda, uno de los ejes de las actuales transformaciones en el medio rural. Nuestras sociedades experimentan profundos cambios en las relaciones sociales, en las estructuras agrarias y en los mercados que configuran los actuales territorios rurales. Muchas de estas transformaciones provienen de novedosos procesos de vinculaci??n con el mercado mundial que moldean los territorios, no sin resistencias de los actores locales.
Tipo: Revista
Palavras-chave: TERRITORIO; EMPLEO RURAL; AGROINDUSTRIA; TRABAJO; CAMPESINOS; COMERCIO JUSTO; MANO DE OBRA; PRODUCCI??N DE FLORES; PROVINCIA DEL COTOPAXI; ECUADOR; TERRITORY; RURAL EMPLOYMENT; WORK; FARMERS; FAIR TRADE; LABOR; PRODUCTION OF FLOWERS.
Ano: 2013
URL: http://hdl.handle.net/10469/5875

Conflictividad socio-pol??tica : Noviembre 2012- febrero 2013 (Coyuntura)
Provedor de dados: 122
El descenso de la conflictividad social sigue la tendencia ya observada en per??odos anteriores, particularmente en relaci??n a la conflictividad ind??gena, aunque esta tendencia descendente es tambi??n visible en otros g??neros de conflictos. La conflictividad social como forma de oposici??n pol??tica ha disminuido en el marco del proceso preelectoral.
Tipo: Art??culo
Palavras-chave: CONFLICTOS SOCIALES; CONFLICTOS POL??TICOS; CONFLICTOS IND??GENAS; OPOSICI??N POL??TICA; ELECCIONES; SOCIAL CONFLICT; POLITICAL CONFLICT; INDIGENOUS CONFLICT; COMPETITION POLICY; ELECTIONS; ECUADOR.
Ano: 2013
URL: http://hdl.handle.net/10469/5403

Andina Migrante [no. 16, septiembre 2013. BOLET??N COMPLETO]
Provedor de dados: 122
Autores: FLACSO Sede Ecuador. Programa de Sociolog??a. Sistema de Informaci??n sobre Migraciones Andinas.
El Bolet??n AndinaMigrante n??mero 16 analiza la migraci??n  cubana hacia la regi??n Andina y Latinoam??rica, en relaci??n a las estructuras pol??ticas y legales que atraviesan la movilidad de las personas cubanas en origen, en tr??nsito y en los distintos destinos.
Tipo: Bolet??n
Palavras-chave: CUBA; REGI??N ANDINA; AM??RICA LATINA; MIGRACI??N; FLUJOS MIGRATORIOS INTRA-REGIONALES; SOUTH AMERICA; LATIN AMERICA; MIGRATION; INTRA-REGIONAL MIGRATION FLOWS; POL??TICA MIGRATORIA; IMMIGRATION POLICY.
Ano: 2013
URL: http://hdl.handle.net/10469/5547

El caso de tortura de Abu Ghraib como signo del poder y la hegemon??a de Estados Unidos y su relaci??n con los derechos humanos
Provedor de dados: 122
Autores: Silva Villavicencio, Eduardo Ra??l.
El 11 de septiembre de 2001 marc?? el inicio de la experiencia del siglo XXI en la percepci??n de la realidad ligada a la transgresi??n de la violencia pol??tica. Este ataque suspendi?? las certezas de la seguridad y el estilo de vida de una sociedad como la norteamericana haci??ndola ingresar en una etapa de amenaza constante. Este acontecimiento marc?? el inicio de una estrategia de lucha contra el terrorismo que despleg?? una ideolog??a de seguridad e inter??s del estado guiada por una vertiente (una desviaci??n) neoconservadora del realismo pol??tico, que se dirig??a no solamente al mantenimiento de una hegemon??a sino en la maximizaci??n del poder a trav??s de una estrategia de intervenci??n militar que llev?? la influencia de los valores liberales de...
Tipo: Tesis
Palavras-chave: IRAQ; ABU GHRAIB; ESTADOS UNIDOS; DERECHOS HUMANOS; TORTURA; VIOLENCIA POL??TICA; TERRORISMO; SEGURIDAD NACIONAL; FUERZAS ARMADAS; HUMAN RIGHTS; TORTURE; POLITICAL VIOLENCE; TERRORISM; NATIONAL SECURITY; ARMED FORCES.
Ano: 2013
URL: http://hdl.handle.net/10469/5857

Antagonismo y disenso: tensiones y l??mites en la construcci??n medi??tica de la pol??tica en Venezuela (Dossier)
Provedor de dados: 122
Autores: Sibrian, Nairbis; Millones Espinosa, Mario.
En Venezuela, la constituci??n de la pol??tica se ha centrado hist??ricamente en el conflicto entre dos polos opuestos. Con la llegada de Hugo Ch??vez a la Presidencia de la Rep??blica en el a??o 1998 ???y el posterior golpe de Estado en 2002??? esta caracter??stica es redefinida para acentuarse mucho m??s. Dicho antagonismo ha consolidado una fuerte identidad popular, la cual ha marcado una clara diferencia entre un ???nosotros??? (el pueblo) y un ???ellos??? (enemigos del pueblo). Esta tendencia se ha reafirmado durante los procesos electorales, siendo en los dispositivos medi??ticos donde se ha evidenciado con mayor ??nfasis y donde este antagonismo se ha construido como consenso a costa de la invisibilizaci??n de otras voces o la anulaci??n del disenso...
Tipo: Art??culo
Palavras-chave: ANTAGONISMO; DISENSO; POL??TICA; MEDIOS DE COMUNICACI??N; VENEZUELA; ANTAGONISM; DISSENT; POLITICS; MASS MEDIA.
Ano: 2013
URL: http://hdl.handle.net/10469/5152

Nuevas voces feministas en América Latina : ¿continuidades, rupturas, resistencias? (Dossier)
Provedor de dados: 122
Autores: Coba, Liset; Herrera, Gioconda.
Este dossier registra reflexiones sobre el devenir de los feminismos en América Latina. Si bien la diversidad de feminismos en el continente puede remontarse a comienzos del siglo veinte, las últimas tres décadas marcaron transformaciones importantes1. El camino recorrido muestra momentos muy distintos y contradictorios; voces que desde diversas localidades han demandado cambios a la sociedad, a la cultura, al Estado y por supuesto también, a las mismas organizaciones sociales y casa adentro.
Tipo: Artículo
Palavras-chave: FEMINISMO; VOCES FEMINISTAS; AMÉRICA LATINA; MUJERES; SOCIEDAD; CULTURA; ESTADO; ORGANIZACIONES SOCIALES; FEMINISM; FEMINIST VOICES; LATIN AMERICA; WOMEN; SOCIETY; CULTURE; STATE; SOCIAL ORGANIZATIONS.
Ano: 2013
URL: http://hdl.handle.net/10469/4714

La econom??a del narcotr??fico y su din??mica en Am??rica Latina (Temas)
Provedor de dados: 122
Autores: Pont??n C., Daniel.
El presente art??culo analiza el comportamiento de la econom??a del tr??fico de drogas en Latinoam??rica en los ??ltimos doce a??os y su incidencia en la configuraci??n de un nuevo escenario delincuencial en la regi??n. Se argumenta que en el entendimiento econ??mico del narcotr??fico se puede dimensionar su verdadera capacidad de infiltraci??n y cooptaci??n, analizar las grandes variaciones en la demanda y oferta de estos productos y su impacto en la din??mica actual de la criminalidad en Am??rica Latina; y por ??ltimo, desestructurar algunos mitos levantados alrededor de esta econom??a. Esto abre la posibilidad de un nuevo marco metodol??gico para el dise??o de pol??ticas, que busca adaptar las capacidades estatales de control, neutralizaci??n y...
Tipo: Art??culo
Palavras-chave: ECONOM??A DEL NARCOTR??FICO; DIN??MICA SOCIAL; TR??FICO DE DROGAS; AM??RICA LATINA; MERCADOS CRIMINALES; CRIMEN ORGANIZADO; COCA??NA; LAVADO DE ACTIVOS; DRUG ECONOMY; SOCIAL DYNAMICS; DRUG TRAFFICKING; LATIN AMERICA; CRIMINAL MARKETS; ORGANIZED CRIME; COCAINE; MONEY LAUNDERING.
Ano: 2013
URL: http://hdl.handle.net/10469/5570

Emancipaciones : acerca de la aprobaci??n de la ley del matrimonio igualitario en Argentina (Temas)
Provedor de dados: 122
Autores: Biglieri, Paula.
El art??culo presenta una interpretaci??n sobre la aprobaci??n de la ley de matrimonio igua??litario en la Argentina, en el contexto de la articulaci??n populista del ???kirchnerismo???. Para ello apela a la noci??n de emancipaci??n ???sobre la cual se presenta un recorrido te??rico??? para trabajar la hip??tesis de que el ???kirchnerismo??? se ofrece como superficie de inscripci??n de pr??cticas emancipatorias y estudiar la estrategia del movimiento LGBT a partir de dos elementos clave: a) haber pensado al Estado como espacio v??lido de la lucha pol??tica emancipatoria y b) haber logrado que la demanda particular de un determinado grupo subalterno se convirtiera en una demanda popular.
Tipo: Art??culo
Palavras-chave: MATRIMONIO IGUALITARIO; EMANCIPACI??N; IGUALDAD; POPULISMO; KIRCHNERISMO; ARGENTINA; EQUAL RIGHTS; EMANCIPATION; EQUALITY; POPULISM; KIRCHNERIST.
Ano: 2013
URL: http://hdl.handle.net/10469/5159

Cooperaci??n china en Am??rica Latina : las implicaciones de la asistencia para el desarrollo (Dossier)
Provedor de dados: 122
Autores: Erthal Abdenur, Adriana; Neto, Danilo Marcondes de Souza.
En el ??ltimo decenio, la cooperaci??n china en Am??rica Latina y el Caribe ha ganado fuerza, impulsada no solo por el comercio creciente, sino tambi??n por los v??nculos pol??ticos, tecnol??gicos, culturales y de  seguridad que se han diversificado progresivamente. Si bien esta cooperaci??n ha generado beneficios tangibles, tambi??n ha provocado nuevas din??micas de competencia, incluso entre los actores involucrados en la  asistencia para el desarrollo. Este art??culo examina algunos de los impactos de la cooperaci??n china, a partir de la investigaci??n sobre los riesgos y oportunidades, tanto como las reacciones de los donantes respecto al involucramiento chino. Nuestro an??lisis destaca cuatro tendencias que se pueden intensificar debido  al aumento...
Tipo: Art??culo
Palavras-chave: CHINA; EL CARIBE; AM??RICA LATINA; COOPERACI??N INTERNACIONAL; ASISTENCIA T??CNICA; COOPERACI??N SUR-SUR; DESARROLLO SOCIAL; LATIN AMERICA; INTERNATIONAL COOPERATION; TECHNICAL ASSISTANCE; SOUTH-SOUTH COOPERATION; SOCIAL DEVELOPMENT.
Ano: 2013
URL: http://hdl.handle.net/10469/5566

Fotograf??as familiares : reconstrucci??n de las memorias alrededor de la violencia en el Barrio Villa Niza en la ciudad de Medell??n - Colombia
Provedor de dados: 122
Autores: Londo??o Villada, Duvan Alexis.
Esta etnograf??a trata sobre las memorias alrededor de los eventos que dan cuenta de la violencia continua que hist??ricamente han vivido los habitantes del barrio Villa Niza en la ciudad de Medell??n-Colombia. Se parte desde sus particularidades de poblamiento, en muchos casos provocado por la violencia pol??tica en la d??cada 1950, pasando por las violencias que se viven en el presente, producto de la confrontaci??n entre grupos armados, que han fragmentado los procesos sociales, y al tiempo han surgido estrategias de supervivencia y resistencia al conflicto armado.
Tipo: Tesis
Palavras-chave: ETNOGRAF??A; FOTOGRAF??A; COMUNICACI??N VISUAL; MATERIAL VISUAL; FAMILIA; IDENTIDAD CULTURAL; VIOLENCIA; BARRIO VILLA NIZA; MEDELL??N; COLOMBIA; MUERTE.
Ano: 2013
URL: http://hdl.handle.net/10469/6188

Pie derecho var??n : metrov??a y paradigmas de pol??ticas en disputa
Provedor de dados: 122
Autores: Bayas Mora, Pablo Andr??s.
Inspirados en el trabajo de Kuhn (2004) acerca de los paradigmas cient??ficos, y tomando como puntos de referencia los trabajos y construcciones posteriores al fil??sofo estadounidense en el campo de las pol??ticas (en especial Carson et al., 2010), aplicamos la noci??n de paradigma de pol??tica (policy paradigm) para dar cuenta de la emergencia de un nuevo paradigma en el transporte p??blico de Guayaquil: el paradigma de la movilidad sustentable que se manifiesta en el dise??o e implementaci??n del nuevo sistema de transporte masivo en la ciudad, la Metrov??a de Guayaquil. En este nuevo escenario, el paradigma de transporte tradicional y el emergente paradigma de  movilidad sustentable conviven en tensi??n, en disputa.
Tipo: Tesis
Palavras-chave: GUAYAQUIL; ECUADOR; TRANSPORTE P??BLICO; METROV??A; MOVILIDAD SUSTENTABLE; SISTEMAS DE TRANSPORTE; PUBLIC TRANSPORT; SUSTAINABLE MOBILITY; TRANSPORT SYSTEMS.
Ano: 2013
URL: http://hdl.handle.net/10469/5916

Tiempos de cambio : política y comunicación en América Latina (Reseñas)
Provedor de dados: 122
Autores: Maluf, Marcia.
En suma, los análisis referidos del contenido de este libro, dan cuenta de tendencias que se hacen cada vez más visibles en la relación entre los medios, la política y la sociedad, en un mundo en que los medios emergen como actores en un conjunto amplísimo de espacios y procesos simbólicos, políticos y culturales. Podría decirse que los artículos expresan la expectativa sostenida sobre una función democratizadora y racionalizadora de los medios, a semejanza de lo que fueron las expectativas depositadas en la ciencia en sus orígenes. Pero dichas expectativas no pueden dejar de considerar que todo espacio social, aunque público, no puede existir sin los efectos de subjetividades, que son siempre políticas. El reconocimiento de esta realidad conlleva no...
Tipo: Artículo
Palavras-chave: RESEÑA ACADÉMICA; CAMBIOS SOCIALES; COMUNICACIÓN; AMÉRICA LATINA; DESIGUALDAD SOCIAL; GOBIERNO; ESTADO; ACADEMIC REVIEW; SOCIAL CHANGE; COMMUNICATION; LATIN AMERICA; SOCIAL INEQUALITY; GOVERNMENT; STATE.
Ano: 2013
URL: http://hdl.handle.net/10469/4713

Inscripci??n de problema en la agenda de pol??ticas p??blicas : an??lisis  del caso de moratoria Ishpingo - Tiputini - Tambococha (ITT)
Provedor de dados: 122
Autores: Anzieta Reyes, Ernesto Miguel.
Desde que el Ecuador manifest?? por primera vez su intenci??n de no explotar los recursos de los yacimientos Ishpingo Tiputini Tambococha (ITT) en el Yasun??, ha transcurrido m??s de un lustro. Todav??a la propuesta no termina de despegar y si bien la explotaci??n tampoco, los problemas socio-ambientales en la zona del Yasun?? siguen vigentes, as?? como los imperativos energ??ticos y econ??micos que presionan al Estado para el aprovechamiento de los hidrocarburos en la zona. Ante lo que se avizora como un fracaso de la propuesta de pol??tica p??blica, surgen varias inquietudes ??c??mo es posible que una iniciativa de moratoria haya nacido en un pa??s altamente dependiente del petr??leo?, ??qu?? condiciones llevaron a que se configure la propuesta en los...
Tipo: Tesis
Palavras-chave: ECUADOR; ISHPINGO - TIPUTINI - TAMBOCOCHA (ITT); POL??TICAS P??BLICAS; ENERG??A; SUBSIDIOS; YASUN??; PETR??LEO; AGENDA P??BLICA.
Ano: 2013
URL: http://hdl.handle.net/10469/6003