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| Registros recuperados: 98.244 | |
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| Oliveira Neto,Osmundo B.; Farias,Davi F.; Vasconcelos,Ilka M.; Paes,Norma S.; Monteiro,Ana C. S.; Silva,Maria C. M. da; Guimarães,Luciane M.; Carvalho,Ana F.U.; Grossi-de-Sá,Maria F.. |
| Chagasin may be considered a potential plant-incorporated protectant (PIP) protein due to its deleterious effects on insect pests. However, extensive safety studies with PIP's are necessary before introducing them into the target plant. Thus, a short-term feeding trial in rats with high doses of r-chagasin was conducted to provide evidences about its safety. Three test diets containing casein + r-chagasin (0.25, 0.5 and 1% of total protein) were offered to rats (10 days). The test diets did not show adverse effects upon the development, organ weight, hematological parameters and serum protein profiles of rats, providing preliminary information on the safety of r-chagasin. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chagasin; Recombinant protein; Hazard potential; Short-term rat feeding trial. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000100019 |
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| Nielsen,D.R.; Hopmans,J.W.; Kutílek,M.; Wendroth,O.. |
| We initially review basic concepts of the forces acting on soil water, soil water potential and soil water retention, and equations to describe soil water movement under water-saturated and unsaturated conditions. Processes of infiltration, evaporation and redistribution of water will be presented for simple initial and boundary conditions occurring within homogeneous soil columns. Next we consider the physical, chemical and biological processes within a soil profile that distribute, dilute or concentrate solute species within the liquid phase of a soil The relative concentration of solutes in the liquid phase governs not only the retention and transport of water within soils but also contributes to our understanding of managing the quality of water within... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solute transport; Regionalized variable. |
| Ano: 1997 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161997000300012 |
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| Thimoteo,S.S.; Glogauer,A.; Faoro,H.; de Souza,E.M.; Huergo,L.F.; Moerschbacher,B.M.; Pedrosa,F.O.. |
| Chitinases are hydrolases that degrade chitin, a polymer of N-acetylglucosamine linked β(1-4) present in the exoskeleton of crustaceans, insects, nematodes and fungal cell walls. A metagenome fosmid library from a wastewater-contaminated soil was functionally screened for chitinase activity leading to the isolation and identification of a chitinase gene named metachi18A. The metachi18A gene was subcloned and overexpressed in Escherichia coli BL21 and the MetaChi18A chitinase was purified by affinity chromatography as a 6xHis-tagged fusion protein. The MetaChi18A enzyme is a 92-kDa protein with a conserved active site domain of glycosyl hydrolases family 18. It hydrolyses colloidal chitin with an optimum pH of 5 and temperature of 50°C. Moreover, the enzyme... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chitinase; Metagenomic; Aeromonas; Kinetics. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000100602 |
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| Joiris, C.R.; Billen, G.; Lancelot, MH.; Daro, M.H.; Mommaerts, J.-P.; Bertels, A.; Bossicart, M.; Nijs, J.; Hecq, J.H.. |
| The various biological compartments of the Belgian coastal zone of the North Sea were studied since 1971. The synthesis of available data on carbon cycling includes phytoplankton biomass and activities (particulate and dissolved primary production, respiration) , zooplankton biomass and activities (grazing, respiration) and planktonic and benthic microbial heterotrophic activities. These various carbon flux estimates allow the development of an overall budget of carbon cycling. This budget shows the importance of microbial (planktonic and benthic) heterotrophs versus zooplankton in the utilization of primary production. Comparison with literature data suggests that this could be a general feature of coastal, as opposed to open sea ecosystems. |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 1982 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=6908 |
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| Marques,Marcus Vinícius Romero; Resende,José Sérgio de; Donatti,Rogério Venâncio; Vilela,Daniel Ambrózio da Rocha; Ecco,Roselene; Martins,Nelson Rodrigo da Silva. |
| A bumblefoot outbreak with different prognosis according to host species was studied in captive aquatic avian species. Six wood ducks (Aix sponsa), three scarlet-ibis (Eudocimus ruber), two black-swans (Cygnus atratus), five white-faced ducks (Dendrocygna viduata) and two roseate spoonbills (Platalea ajaja) were kept in a common pen with abrasive pavement pond margin, predisposing to podal skin wear. Incoordination and mortality occurred in the two roseate spoonbils and one black swan. Coagulase-positive penicillin-resistant Staphylococcus aureus was isolated from the synovial fluid and from the liver. All birds sharing the pen presented active or cicatricial foot lesions, indicating a possible challenge to the environmental Staphylococci. However, except... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aquatic birds; Bumblefoot; Pododermatitis; Wood duck (Aix sponsa); Scarlet-ibis (Eudocimus ruber); Black-swan (Cygnus atratus); White-faced duck (Dendrocygna viduata); Roseate spoonbill (Platalea ajaja). |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782009000600044 |
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| Silva,Nelson Machado da; Carvalho,Luiz Henrique; Hiroce,Ruter; Quaggio,José Antonio. |
| Após o quarto ano de condução de um ensaio permanente de calagem e de adubação mineral com o algodoeiro, iniciado em 1974 em um latossolo roxo ácido, argiloso (66%) e rico em matéria orgânica (4,1%), no município de Guaíra, SP, reaplicou-se o calcário. Utilizaram-se as mesmas doses da primeira fase (1,5, 3,0 e 6,0 t/ha), exceto nas parcelas testemunhas, onde se fez uma calagem mínima com 1,5 t/ha. A adubação mineral teve continuidade com aplicações anuais de 60 kg/ha de N (sulfato de amônio) e P x K, em esquema fatorial, nas doses de 0, 60 e 120 kg/ha de P2O5 (superfosfato simples) e 40 e 80 kg/ha de K2O (cloreto de potássio). Por falta de resposta significativa do algodoeiro a potássio, não se considerou o efeito do referido nutriente. No tratamento com a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Calcário dolomítico; Superfosfato simples; Calagem e fósforo; Correlação; Lixiviação de bases e análise foliar. |
| Ano: 1987 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87051987000200018 |
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| Mascarenhas,Hipóuto Assunção Antonio; Teixeira,João Paulo Feijão; Nagai,Violeta; Tanaka,Roberto Tetsuo; Gallo,Baulo Boller; Pereira,José Carlos Vila Nova Alves. |
| No ano agrícola de 1986/87, nas Estações Experimentais de Mococa e Ribeirão Preto, efetuaram-se experimentos com o objetivo de avaliar o efeito da aplicação de níveis crescentes de calcário dolomítico (0, 4, 8 e 12t/ha) sobre os teores de óleo e proteína nos grãos dos cultivares de soja IAC-Foscarin-31, IAC-11, IAC-12 e Cristalina. Os maiores teores de óleo e de protefna foram observados nos grãos colhidos em Mococa. Independentemente da calagem e das localidades, o 'IAC-12' apresentou as maiores produções médias de óleo e proteína por área, 561 e 963kg/ha respectivamente. Em todas as localidades, a calagem promoveu a elevação do teor de proteína e a redução do teor de óleo nos grãos. A produção de óleo e proteína (kg/ha) aumentou linearmente com os níveis... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soja; Calagem; Óleo; Proteína. |
| Ano: 1990 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87051990000100014 |
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| Medellín-Azuara,Josué; Howitt,Richard E.; Waller-Barrera,Cynthia; Mendoza-Espinosa,Leopoldo G.; Lund,Jay R.; Taylor,Joseph E.. |
| Irrigated agriculture is the largest water user in many regions, and agricultural water use efficiency and consumption has been studied by several authors. This paper provides a framework and application of economic valuation of water for agriculture in three regions in northern Baja California, Mexico, namely Guadalupe, Maneadero and Mexicali Valleys. Positive mathematical programming (PMP), a deductive valuation technique, was the framework used for this estimation using water delivery data reported by the National Water Commission in Mexicali, production costs and cultivated area, production factors use from the Agriculture Ministry (SAGARPA); and other data from previous studies. Analysis of the results shows that marginal economic water value in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mathematical programming; Baja California; Economic water valuation. |
| Ano: 2009 |
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952009000200001 |
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| Rodríguez,N.M.; Campos,W.E.; Lachica,M.L.; Borges,I.; Gonçalves,L.C.; Borges,A.L.C.C.; Saliba,E.O.S.. |
| An indirect calorimetry system for rapid determination of CO2 and CH4 production and O2 consumption to estimate heat production of animals was built at Escola de Veterinária da Universidade Federal de Minas Gerais, Brazil. Procedures for determination of correction and calibration factors for gas analyzers and the whole system, using standard test gases were described. In addition, a metabolic trial was performed to evaluate heat production of lambs fed ad libitum. It is concluded that the system is suitable for heat production determinations in small and medium size animals. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Calibration; Open circuit; Respirometry. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352007000200033 |
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| Ventura,Henrique T.; Lopes,Paulo S.; Peloso,José V.; Guimarães,Simone E.F.; Carneiro,Antonio Policarpo S.; Carneiro,Paulo L.S.. |
| The association between carcass and ham traits in a pig population used to produce dry-cured ham was studied using canonical correlation analysis. The carcass traits examined were hot carcass weight (HCW), backfat thickness (BT) and loin depth (LD), and the ham traits studied were gross ham weight (GHW), trimmed ham weight (THW), ham inner layer fat thickness (HIFT), ham outer layer fat thickness (HOFT), pH (pH) and the Göfo value. Carcass and ham traits are not independent. The canonical correlations (r) between the carcass and ham traits at 130 kg were 0.77, 0.24 and 0.20 for the first, second and third canonical pair, respectively, and were all significant (p < 0.01) by the Wilks test. The corresponding canonical correlations between the three... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Canonical correlation; Carcass; Ham; Pig. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572011000300014 |
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| Raij,Bernardo van. |
| Foi estudada a capacidade de troca de cations (C.T.C.), da matéria orgânica e da fração mineral, em 103 amostras de 22 perfis de solos do Estado de São Paulo. A C.T.C. da matéria orgânica variou de 190 a 400 e.mg por 100 g, em amostras superficiais, e de 160 a 490 em subsuperficiais. Verificou-se estreita correlação entre a C.T.C. da matéria orgânica e o pH dos solos. A C.T.C. da fração mineral no horizonte B variou entre 2,7 e 20,0 e.mg. Em média, a contribuição da matéria orgânica à C.T.C. foi de 74% para amostras superficiais. Atingiu a 58% para os horizontes A2 e A3, a 47% para o B1 e a 35% para B2 e B22. |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 1969 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87051969000100008 |
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| Ferronato,Edna M. O.. |
| Este estudo descreve a forma e as dimensões da cápsula da espermateca em Antytipona epiphania, Bechyné, 1955, Antytipona sp., Cayetunya sp., Colaspis aenea (Fabricius, 1801), Colaspis calcalifera (Bechyné, 1954), Coytiera (Campylochira) pertusa (Lèfevre, 1884), Hermesilla sp., Hylax bahiensis Bechyné, 1950, Leprocolapis adducta (Clavaereau, 1914),Leprocolapis sulcata Lèfevre, 1877, Nycterodina (Nycterodinella) immetalllica Bechyné & Bechyné, 1961,Percolaspis ornata, (Germar, 1824), Plaumannita sp., Podoxenus sp. e Taimbezinhia theobromae (Bryant, 1924) com o objetivo de auxiliar na identificação das espécies associadas às plantações de Theobroma cacao L. na Bahia. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Insecta; Morfologia; Caracterização; Cacaueiro. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0301-80592000000100007 |
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| Registros recuperados: 98.244 | |
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