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	Provedor de dados AgEcon (1) Autor Marsh, Thomas L. (1) Mittelhammer, Ronald C. (1) Palavra-chave Bayesian regression (1) Doubly truncated samples (1) Maximum entropy (1) Research Methods/ Statistical Methods (1) Wheat-by-class (1) Tipo do documento Conference Paper or Presentation (1) Ano 2000 (1) País United States (1) Idioma Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 100.719 Primeira ... 3 4 5 6 7 8 9 10 11 ... Última A avifauna da região de Vila Bela da Santíssima Trindade, Mato Grosso Pap. Avulsos de Zool. (São Paulo) Silveira,Luís Fábio; d'Horta,Fernando Mendonça. A avifauna da região de Vila Bela da Santíssima Trindade (incluindo aí o município de Pontes e Lacerda), Mato Grosso, foi amostrada no final do mês de julho de 1997. Para este levantamento foram utilizados diferentes métodos, que resultaram num total de 312 espécies de aves. Os resultados desta campanha foram comparados com aqueles obtidos por Johann Natterer e Willis e Oniki, que passaram por esta mesma região no século XIX (década de 1820) e na década de 1980, respectivamente. Para a região do Vale do Guaporé temos, quando somados os resultados de todos os autores, um mínimo de 472 espécies de aves, e extinções locais não são reportadas, demonstrando um considerável grau de conservação para esta área. A maioria das espécies registradas nesta região está... Tipo: Info:eu-repo/semantics/article Palavras-chave: Aves; Estado do Mato Grosso; Vale do Guaporé; Conservação; Levantamentos de Avifauna. Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492002001000001 A barrier to upstream migration in the fish passage of Itaipu Dam (Canal da Piracema), Paraná River basin Neotropical Ichthyology Fontes Júnior,Hélio Martins; Castro-Santos,Theodore; Makrakis,Sergio; Gomes,Luiz Carlos; Latini,João Dirço. The majority of the fish passages built in the Neotropical region are characterised by low efficiency and high selectivity; in many cases, the benefits to fish populations are uncertain. Studies conducted in the Canal da Piracema at Itaipu dam on the Parana River indicate that the system component designated as the Discharge channel in the Bela Vista River (herein named Canal de deságue no rio Bela Vista or CABV), a 200 m long technical section, was the main barrier to the upstream migration. The aim of this study was to evaluate the degree of restriction imposed by the CABV on upstream movements of Prochilodus lineatus and Leporinus elongatus, Characiformes. Fish were tagged with passive integrated transponders (PIT tags) and released both downstream and... Tipo: Info:eu-repo/semantics/article Palavras-chave: Fish migration; Nature-like; Neotropical fishes; PIT-tag; Telemetry. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000400002 A Bayesian analysis of the parasitic ecology in Jenynsia multidentata(Pisces: Anablepidae) Iheringia, Sér. Zool. Montes,Martin M.; Martorelli,Sergio R.. ABSTRACT Jenynsia multidentata Jenyns, 1842 (one-sided livebearers) are euryhaline viviparous fish of small size, used in the laboratory experiment, important as resource for biological control of mosquito’s larva and a key species to recover eutrophic lakes. Works have been published dealing with parasite biodiversity of this host, but little has been studied about the parasite community ecology. From early 2009 to ends of 2010 specimens of J. multidentata were collected from two places, the Salado Relief Channel (S.R.C.) on Samborombón Bay and the Sauce Chico River near to the city of Bahia Blanca (B.B.). All fish were sexed, measured and grouped into sizes/age classes. The fishes from both sites harbored 16 parasitic species: nine digenean, one... Tipo: Info:eu-repo/semantics/article Palavras-chave: Diversity; Samborombon Bay; Bahia Blanca; Salado River Relief Channel; Low Sauce River. Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212017000100222 A Bayesian approach to estimate the accuracy of "in-house" ELISA assay to measure rabies antibodies from compulsory vaccinated dogs and cattle J. Venom. Anim. Toxins incl. Trop. Dis. Nogueira,AHC; Silva,C; Gomes,DE; Rosa,ACG; Luvizotto,MCR; Cardoso,TC. Rabies is a vaccine-preventable disease that causes acute encephalitis in mammals, and it is still a significant public health problem in numerous countries. Infected dogs represent the main vectors involved in human rabies. Additionally, cattle rearing close to geographic areas where vampire bats are found presents an important connection with rural epidemiology. We applied two "in-house" enzyme-linked immunosorbent assay (ELISA) methodologies, considered alternatives to measure antibodies from vaccinated dogs and cattle, without employing the gold standard approach. The ELISA assays were performed on individual serum samples taken from domestic adult dogs and cows compulsory vaccinated against rabies (147 urban dogs and 64 cows; n = 211). The sandwich... Tipo: Info:eu-repo/semantics/article Palavras-chave: Rabies antibody; Bayesian analysis; ELISA assay. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992009000100012 A Biblioteca do Museu Paraense Emílio Goeldi Acta Amazonica Diniz,Léa. Resumo A Biblioteca foi criada em 1894 para servir de apoio bibliográfico às pesquisas realizadas no Museu e acompanhou, conseqüentemente, as fases de crescimento e declínio desta instituição. A partir de 1954. por força de um convênio firmado com o Governo do Estado do Pará pelo qual o Museu passou a ser administrado pelo CNPq através do INPA, a Biblioteca recebeu nova organização, maiores recursos humanos e financeiros, tomando novo impulso e reconquistando sua posição entre as melhores do país. Neste ano em que se comemora o 30.º aniversário do CNPq. a Biblioteca está com um acervo especializado bastante significativo (109.364 documentos), participa de programas de cooperação nacionais e internacionais, realiza intercâmbio com 3.245 instituições do... Tipo: Info:eu-repo/semantics/article Ano: 1981 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671981000900189 A bioassay method for black flies (Diptera: Simuliidae) using larvicides Neotropical Entomology Araújo-Coutinho,Carlos J.P.C.; Figueiró,Ronaldo; Viviani,Andréia P.; Nascimento,Érika S.; Cavados,Clara F.G.. This note presents an alternative method for bioassays using black fly larvae, with which we intend to provide a simpler but effective tool for accessing data on larvicide efficacy. Tipo: Info:eu-repo/semantics/article Palavras-chave: Biological control; Efficacy; Technique. Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2005000300022 A biocultural approach to the use of natural resources in Northeast Brazil: A socioeconomic perspective Acta Botanica Silva,Nylber Augusto da; Alves,Ângelo Giuseppe Chaves; Albuquerque,Ulysses Paulino de; Ramos,Marcelo Alves. ABSTRACT We employed a biocultural approach to understanding the dynamics of knowledge ans use of natural resources associated in immaterial aspects of culture. We investigated whether factors such as sex, income, age, religion, occupation and time of participation in cultural practice influence the richness of species known and used by members of Cavalo Marinho, expression of the popular culture of the Brazilian Northeast that brings together theater, music and dance. We recorded a total of 111 ethnospecies (95 plants and 16 animals), based on information obtained from 56 informants. .There was a predominance of native plants and domestic animals in the knowledge of the participants in this cultural expression, although effective use is restricted to few... Tipo: Info:eu-repo/semantics/article Palavras-chave: Biocultural approach; Biocultural heritage; Cultural practice; Intracultural variation; Knowledge and use; Natural resources. Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000200315 A biodegradation study of forest biomass by Aspergillus niger F7: correlation between enzymatic activity, hydrolytic percentage and biodegradation index BJM Sharma,Nivedita; Kaushal,Richa; Gupta,Rakesh; Kumar,Sanjeev. Aspergillus niger F7 isolated from soil was found to be the potent producer of cellulase and xylanase. The residue of forest species Toona ciliata, Celtris australis, Cedrus deodara and Pinus roxburghii was selected as substrate for biodegradation study due to its easy availability and wide use in industry. It was subjected to alkali (sodium hydroxide) treatment for enhancing its degradation. Biodegradation of forest waste by hydrolytic enzymes (cellulase and xylanase) secreted by A. niger under solid state fermentation (SSF) was explored. SSF of pretreated forest biomass was found to be superior over untreated forest biomass. Highest extracellular enzyme activity of 2201±23.91 U/g by A. niger was shown in pretreated C. australis wood resulting in... Tipo: Info:eu-repo/semantics/article Palavras-chave: Aspergillus niger; SSF; Enzyme activity; Percent hydrolysis; Biodegradation index. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000200006 A biodistribution study of Hemiscorpius lepturus scorpion venom and available polyclonal antivenom in rats J. Venom. Anim. Toxins incl. Trop. Dis. Seyedian,R; Jalali,A; Babaee,MH; Pipelzadeh,MH; Rezaee,S. The purpose of the present study was to investigate the biodistribution profile of the venom of Hemiscorpius lepturus, the most dangerous scorpion in Iran. Blood and tissue samples were taken at various predetermined intervals during a 400-minute period for the venom and a 360-minute period for the antivenom in rats. The radio-iodination was carried out using the chloramine-T method. The results showed that the descending order of venom uptake was skin, kidneys and intestine, respectively. The descending order of polyclonal antivenom uptake was kidneys, intestine, heart and lungs. The calculated pharmacokinetic parameters of the venom were Telimination half-life = 521.5 ± 12.6 minutes; Vd/F (apparent volume of distribution) = 14.9 ± 3.3 mL; clearance... Tipo: Info:eu-repo/semantics/article Palavras-chave: Hemiscorpius lepturus scorpion venom; Polyvalent antivenom; Pharmacokinetic parameters; Tissue distribution. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992012000400005 A biogeographical population genetics perspective of the colonization of cats in Latin America and temporal genetic changes in Brazilian cat populations Genet. Mol. Biol. Ruiz-García,Manuel; Alvarez,Diana. We used nine morphological genes to analyze cat populations from Mexico, the Dominican Republic, the Colombian, Brazilian and Peruvian Amazon, Bolivia and Brazil. Most populations were in Hardy-Weinberg equilibrium at the O locus. The highest allele frequencies so far detected at world level for alleles I (inhibitor) and L (long hair) were found at La Paz (Bolivia). The analyses revealed at least five cat gene pools in Latin America: These findings suggest that the current genetic distribution of cats in Latin America correlates with the colonization of the Americas during the XIV to XVIII centuries. Additionally, the cat populations of São Paulo, Rio de Janeiro and Manaus were sampled, to compare their 1996-2003 genetic profiles with those obtained in... Tipo: Info:eu-repo/semantics/article Palavras-chave: Domestic cats; Latin American cats; Population genetics; Genetic changes. Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000400026 A biolistic process for in vitro gene transfer into chicken embryos BJMBR Ribeiro,L.A.; Mariani,P.D.S.C.; Azevedo,J.L.; Rech,E.L.; Schmidt,G.S.; Coutinho,L.L.. Chicken embryos kept in culture medium were bombarded using a high helium gas pressure biolistic device. To optimize the factors that affect transformation efficiency, the lacZ gene under control of the human cytomegalovirus immediate early enhancer/promoter was used as a reporter gene. There was an inverse relationship between survival rate and transformation efficiency. The best conditions obtained for high embryo survival and high transformation efficiency were achieved with 800 psi helium gas pressure, 500 mmHg vacuum, gold particles, an 8 cm DNA-coated microparticle flying distance to the embryo and embryo placement 0.5 cm from the center of the particle dispersion cone. Under these conditions, transformation efficiency was 100%, survival rate 25% and... Tipo: Info:eu-repo/semantics/article Palavras-chave: Biolistic process; Chicken embryo; Gene transfer; SS-galactosidase; Green fluorescent protein; GFP. Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2001000900003 A biological treatment technique for wool textile BABT Xiao-Wei,Yu; Guan,Wen-Jun; Yong-Quan,Li; Ting-Jing,Guo; Ji-Dong,Zhou. A biological treatment technique for wool textile was carried out by enzymes degradation coupled with H2O2 oxidation. The results demonstrated that the technique had ideal effects on wool textile such as better softness, plump and less loss of bursting stress. Because of mild reaction conditions, less textile damage and less environmental pollution, this technique for wool textile treatment could have promising prospect. Tipo: Info:eu-repo/semantics/article Palavras-chave: Wool textile decrement; Oxidation pretreatment; Enzyme degradation; L86 enzymes. Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000600001 A biomechanical study on proximal junctional kyphosis following long-segment posterior spinal fusion BJMBR Zhu,Wen-Yi; Zang,Lei; Li,Jian; Guan,Li; Hai,Yong. Posterior long-segment spinal fusion may lead to proximal junctional kyphosis (PJK). The present study sought to identify the appropriate fusion levels required in order to prevent PJK using finite element analysis. A finite element model was constructed based on the whole-spine computed tomography findings of a healthy adult. Nine commonly used posterior spinal fusion methods were selected. Stress on the annulus fibrosis fibers, the posterior ligamentous complex, and the vertebrae after various spinal fusions in the upright position were compared. This study was divided into two groups: non-fusion and fusion. In the former, the stress between the T10 and the upper thoracic vertebrae was higher. Comparing thoracic and lumbar segments in the fusion group,... Tipo: Info:eu-repo/semantics/article Palavras-chave: Adult spinal deformity; Proximal junctional kyphosis; Upper instrumented vertebra; Functional spinal unit; Finite element. Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2019000500604 A Biosensor Using Poly(4-Aminophenol)/acetylcholinesterase modified graphite electrode for the detection of dichlorvos BABT Melo,Edmar Isaías; Franco,Diego Leoni; Afonso,André Santiago; Rezende,Hélen Cristine; Brito-Madurro,Ana Graci; Madurro,João Marcos; Coelho,Nívia Maria Melo. The properties of poly(4-aminophenol) modified graphite electrode as material for the immobilization of acetylcholinesterase were investigated by the Cyclic Voltammetry, Electrochemical Impedance Spectroscopy and Atomic Force Microscopy. The polymer was deposited on graphite electrode surface by the oxidation of 4-aminophenol and then acetylcholinesterase was immobilized on the surface of the electrode. The biosensor coupled in the continuous flow system was employed for the detection of dichlorvos. The detection and quantification limits were 0.8 and 2.4 μmol L-1 dichlorvos, respectively. Graphite electrodes modified with the poly(4-aminophenol) showed to be an efficient and promising material for immobilization of acetylcholinesterase enzyme. The... Tipo: Info:eu-repo/semantics/article Palavras-chave: Graphite; Poly(4-aminophenol); Biosensor; Dichlorvos. Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132011000600018 A biotechnology perspective of fungal proteases BJM Souza,Paula Monteiro de; Bittencourt,Mona Lisa de Assis; Caprara,Carolina Canielles; Freitas,Marcela de; Almeida,Renata Paula Coppini de; Silveira,Dâmaris; Fonseca,Yris Maria; Ferreira Filho,Edivaldo Ximenes; Pessoa Junior,Adalberto; Magalhães,Pérola Oliveira. Proteases hydrolyze the peptide bonds of proteins into peptides and amino acids, being found in all living organisms, and are essential for cell growth and differentiation. Proteolytic enzymes have potential application in a wide number of industrial processes such as food, laundry detergent and pharmaceutical. Proteases from microbial sources have dominated applications in industrial sectors. Fungal proteases are used for hydrolyzing protein and other components of soy beans and wheat in soy sauce production. Proteases can be produced in large quantities in a short time by established methods of fermentation. The parameters such as variation in C/N ratio, presence of some sugars, besides several other physical factors are important in the development of... Tipo: Info:eu-repo/semantics/article Palavras-chave: Proteases; Enzyme production; Fungal protease; Industrial application. Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000200337 A bipartição como alternativa para melhorar os índices de gestação na transferência de embriões eqüinos Ciência Rural Silveira,Leonardo Luiz da; Souza,Regivaldo Vieira de; Melo,Natalie Soter Sousa; Pezzini,Tomaz Gelson; McManus,Concepta; Rumpf,Rodolfo. A transferência de embriões (TE) já vem sendo utilizada em eqüinos há pelo menos duas décadas, sempre a partir de ovulação simples. Para aumentar a eficiência reprodutiva, este estudo avaliou a bipartição embrionária como uma alternativa para melhorar os índices de gestação na transferência de embriões em eqüinos. Foram utilizadas 21 éguas de diferentes padrões raciais, com idade variando entre 4 e 15 anos de idade, pesando entre 270 a 480kg. A partir da identificação do cio (rufiação), os animais foram monitorados através de exames ultra-sonográficos trans-retais até o momento da ovulação, sendo as receptoras, uma vez ao dia e as doadoras três vezes ao dia. As receptoras utilizadas ovularam um dia antes ou até três dias depois das doadoras. As doadoras... Tipo: Info:eu-repo/semantics/article Palavras-chave: Gestação; Hemi-embriões; Índice de produção; Prenhez. Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782005000200026 A bovine herpesvirus 5 recombinant defective in the thymidine kinase (TK) gene and a double mutant lacking TK and the glycoprotein E gene are fully attenuated for rabbits BJMBR Silva,S.C.; Brum,M.C.S.; Weiblen,R.; Flores,E.F.; Chowdhury,S.I.. Bovine herpesvirus 5 (BoHV-5), the agent of herpetic meningoencephalitis in cattle, is an important pathogen of cattle in South America and several efforts have been made to produce safer and more effective vaccines. In the present study, we investigated in rabbits the virulence of three recombinant viruses constructed from a neurovirulent Brazilian BoHV-5 strain (SV507/99). The recombinants are defective in glycoprotein E (BoHV-5gEΔ), thymidine kinase (BoHV-5TKΔ) and both proteins (BoHV-5gEΔTKΔ). Rabbits inoculated with the parental virus (N = 8) developed neurological disease and died or were euthanized in extremis between days 7 and 13 post-infection (pi). Infectivity was detected in several areas of their brains. Three of 8 rabbits inoculated with the... Tipo: Info:eu-repo/semantics/article Palavras-chave: BoHV-5; GE and TK deletion mutants; Pathogenesis; Virulence; Vaccine candidate. Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2010000200005 A bovine teat papilloma specimen harboring Deltapapillomavirus (BPV-1) and Xipapillomavirus (BPV-6) representatives BABT Claus,Marlise Pompeo; Lunardi,Michele; Alfieri,Amauri Alcindo; Otonel,Rodrigo Alejandro Arellano; Ferracin,Lara Munique; Fungaro,Maria Helena Pelegrinelli; Alfieri,Alice Fernandes. The common occurrence of multiple papillomavirus infections has been shown in several studies involving the human host. However, investigations with the aim of identifying mixed papillomavirus infections in cattle have been conducted only recently. In the current work we describe a co-infection with two different bovine papillomavirus (BPV) types that was identified in a bovine teat papilloma. The skin wart was obtained from a cow belonging to a Brazilian beef herd. A PCR assay was carried out with the FAP primer pair, which amplifies a partial segment of the L1 gene (approximately 478 bp), and the amplicon was submitted to direct sequencing. Because nucleotide sequences with satisfactory quality scores were not obtained, the amplicon was cloned and... Tipo: Info:eu-repo/semantics/article Palavras-chave: Cattle; Cutaneous papillomatosis; BPV; Co-infection. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000700012 A box-model of metal flows through the Scheldt estuary (1981-1983 and 1992-1995) OMA Baeyens, W.F.J.; Monteny, F.; Van Ryssen, R.; Leermakers, M.. The behaviour of Cu, Zn, Cd, and Pb in the Scheldt estuary was investigated in the periods 1981 to 1993 and 1995. The Hg behaviour was studied between 1992 and 1994. A box model was used to establish the relationship between the trace metal inputs and the fate of these pollutants in the Scheldt estuary. Annual budgets were calculated for particulate and dissolved trace metals. For Hg, seasonal budgets of the various species (inorganic Hg, methylmercury, Hg°) could also be calculated. These budgets allow an evaluation of the consistency of each individual flux or process, such as the inputs of the various metals into the North Sea, the sedimentation flux of particulate metals in the area of high turbidity, the evasional fluxes and the formation rates of... Tipo: Info:eu-repo/semantics/article Ano: 1998 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=7059 A bradykinin-potentiating peptide (BPP-10c) from Bothrops jararaca induces changes in seminiferous tubules J. Venom. Anim. Toxins incl. Trop. Dis. Gilio,Joyce M; Portaro,Fernanda CV; Borella,Maria I; Lameu,Claudiana; Camargo,Antonio CM; Alberto-Silva,Carlos. Background The testis-specific isoform of angiotensin-converting enzyme (tACE) is exclusively expressed in germ cells during spermatogenesis. Although the exact role of tACE in male fertility is unknown, it clearly plays a critical function in spermatogenesis. The dipeptidase domain of tACE is identical to the C-terminal catalytic domain of somatic ACE (sACE). Bradykinin potentiating peptides (BPPs) from snake venoms are the first natural sACE inhibitors described and their structure-activity relationship studies were the basis for the development of antihypertensive drugs such as captopril. In recent years, it has been showed that a number of BPPs - including BPP-10c - are able to distinguish between the N- and C-active sites of sACE, what is not... Tipo: Info:eu-repo/semantics/article Palavras-chave: Bradykinin-potentiating peptide; Snake venom; Angiotensin-converting enzyme; Testis; Seminiferous epithelium. Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992013000100316 Registros recuperados: 100.719 Primeira ... 3 4 5 6 7 8 9 10 11 ... Última

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