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Search Results: 1 - 10 of 319944 matches for " Paulo Borges;Dutra Júnior "
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Valores energéticos e aminoácidos digestíveis da semente do capim-arroz (Echinochloa spp) para aves
Rodrigues, Paulo Borges;Dutra Júnior, Wilson Moreira;Rostagno, Horacio Santiago;Rodrigues, Kênia Ferreira;
Revista Brasileira de Zootecnia , 2004, DOI: 10.1590/S1516-35982004000500011
Abstract: three assays were carried out to evaluate the nutritive value of the barnyardgrass seeds (echnochloa spp.) for poultry. in the first assay, twelve adult cockerels were used to determine the true metabolizable energy value corrected by nitrogen retained (tmen), using the forced fed method. in this assay six cockerels were forced fed 30 g of the feed and six cockerels were fastened to determinate metabolic and endogenous losses. in the second assay, twelve cecectomized cockerels were used to determine the true digestibility coefficients of the amino acids in the tested feed, using the same metodology. to determinate the apparent metabolizable energy corrected by nitrogen retained (amen) in the thirth assay, the total excreta collection method was used, with 80 growing chicks of commercial strain. the barnyardgrass seed was included in the proportion of 25 percent of the reference diet, which contained 20% cp and 3000 kcal of the me/kg. the reference and test diets were fed to four replicates of ten birds each. the energy values determined were 1813 kcal amen and 1976 kcal of the tmen/kg as fed. the true digestibility coefficients of the essential and non essential amino acids were, in average, 78.2 % and 78.3 %, respectively. the threonine and the lysine shown lower digestibility (65.8 and 67.2%, respectively) and the phenilalanine (86.4%) follow by the methionine (86.0%) presented higher values among essential amino acids. the tyrosine (90.5%) and cystine (56.3%) presented higher and lower digestibility coefficients, respectively, among the non essential amino acids.
Equa??es e programa computacional para cálculo do transporte de solutos do solo
Borges Júnior, Jo?o C. F.;Ferreira, Paulo A.;
Revista Brasileira de Engenharia Agrícola e Ambiental , 2006, DOI: 10.1590/S1415-43662006000300010
Abstract: this study aimed to develop and to test a computer program for calculating the parameters of soil solute transport equations, based on adjustment of theoretical models to observed data, as well as to perform simulations for the space and temporary variations of the concentration and balance of the solute mass in the soil profile. the least-squares method (levenberg-marquardt) was used to obtain the estimators of the diffusion-dispersion coefficient and retardation factor parameters. the developed program, so-called disp, is provided with a graphic interface that makes possible its use in procedures for data input, accomplishment of calculations and access to results. in the result forms, a number of graphs and tables relative to the effluent curves can be generated besides the possibility to accomplish simulations concerning to space and time variations of both concentration and balance of the solute mass in the soil profile. comparative tests between disp and the program cxtfit, relative to the calculations of the peclet number and retardation factor parameters, pointed out equivalence between both programs, however the graphic interface in disp makes its use more feasible in relation to cxtfit.
Intoxica es natural e experimental por amitraz em eqüídeos: aspectos clínicos
Duarte Marcos Dutra,Peixoto Paulo Vargas,Bezerra Júnior Pedro Soares,Oliveira Krishna Duro de
Pesquisa Veterinária Brasileira , 2003,
Abstract: A administra o oral e a aspers o com amitraz reproduziram experimentalmente em 17eqüinos e um asinino um quadro de intoxica o muito similar a outro que vinha ocorrendo em cavalos no Estado do Rio de Janeiro. O início dos sintomas após a administra o oral variou entre 15min. e 2h05min., na aplica o por aspers o variou entre 6h28min. e 8h38min. A evolu o nos casos de administra o oral foi de 4 a 9 dias, nos de aspers o de 5 a 6 dias. Somente morreram animais que receberam a administra o oral. Um animal aspergido com o amitraz foi sacrificado. Por via oral foram usadas dosagens de 5,5 mg/kg (uma administra o), 5,8 mg/kg (duas administra es) e num terceiro animal, doses que variaram entre 7,2 e 36,4 mg/kg (cinco administra es). Nas aplica es por aspers o, a intoxica o foi reproduzida com solu es nas concentra es de 0,1 e 0,2%. Com rela o ao sistema nervoso, os principais sinais observados foram apatia, sonolência, ptoses palpebral e auricular, dificuldade de apreens o, mastiga o e degluti o do alimento, arrastar das pin as dos cascos no solo, exposi o do pênis, sensibilidade cutanea diminuída/ausente, instabilidade em esta o, abdu o dos membros, cabe a baixa, incoordena o, bocejos, flacidez labial, exposi o da língua, cruzamento dos membros ao caminhar, resposta postural diminuída após cruzar e abduzir os membros, reflexos do lábio superior, palatal, lingual, de degluti o e flexor diminuídos/ausentes, reflexos auricular, palpebral e de amea a diminuídos e resposta ambulatória diminuída ao teste de girar em círculo de pequeno raio. No que se refere ao sistema digestivo, foram evidenciados, principalmente, hipomotilidade/atonia intestinal, edema dos lábios, distens o abdominal, deitar e levantar com freqüência, rolar no solo, olhar para o flanco, gemer e impacta o do intestino grosso. Observaram-se ainda taquicardia, aumento do tempo de preenchimento capilar e mucosas congestas, estridor, taquipnéia, dispnéia, secre o nasal, bradipnéia e respira o abdominal. Todos os três casos naturais ocorreram após aspers o do amitraz. Os primeiros sintomas foram observados 2 e 3 dias após o banho. A evolu o foi de 6, 7 e 17 dias. Um animal manifestou a maioria dos sinais referentes ao sistema nervoso observados nos experimentos, com exce o dos sinais de cruzamento dos membros ao caminhar, bocejos, lábios flácidos e exposi o do pênis. Outro animal, intoxicado espontaneamente, manifestou somente sintomas digestivos como rolar, ''patear'', hipomotilidade/atonia intestinal e impacta o do intestino grosso. Um terceiro animal, inicialmente manifest
Contagem de células somáticas e produ o de leite em vacas holandesas de alta produ o
Coldebella Arlei,Machado Paulo Fernando,Demétrio Clarice Garcia Borges,Ribeiro Júnior Paulo Justiniano
Pesquisa Agropecuária Brasileira , 2003,
Abstract: A mastite bovina pode ser clínica, com sinais visíveis, e subclínica, diagnosticada pela contagem das células somáticas. As perdas econ micas causadas pela mastite subclínica devem ser quantificadas para atender à demanda nacional de produtos lácteos. O objetivo deste trabalho foi verificar se as perdas na produ o de leite, pelo aumento do número de células somáticas, s o proporcionais ou independentes do nível de produ o. Foram utilizadas 7.756 observa es, colhidas mensalmente de um único rebanho, de setembro de 2000 a junho de 2002. A curva de lacta o foi modelada pela fun o gama incompleta, e os efeitos de ordem de lacta o, época do parto, ocorrência de doen as no periparto e escore de condi o corporal ao parto também foram considerados. A contagem de células somáticas foi incluída nesse modelo como fator multiplicativo, representando perdas relativas, e como fator aditivo, representando perdas absolutas. A escolha do melhor modelo foi baseada no critério de informa o de Schwarz (BIC). As perdas s o absolutas, evidentes a partir de 14.270 células/mL e para cada aumento de uma unidade na escala do logaritmo natural a partir desse valor, estimam-se perdas de 184 e 869 g/dia para vacas primíparas e multíparas, respectivamente.
Tendências da epidemia de AIDS entre subgrupos sob maior risco no Brasil, 1980-2004
Barbosa Júnior, Aristides;Szwarcwald, Célia Landmann;Pascom, Ana Roberta Pati;Souza Júnior, Paulo Borges de;
Cadernos de Saúde Pública , 2009, DOI: 10.1590/S0102-311X2009000400003
Abstract: the objective of this paper was to present the trends in the aids epidemic in the population groups at highest risk in brazil. discriminant analysis was used to reclassify cases with unknown risk into one of the three groups: idu (injecting drug users), msm (men who have sex with men), and heterosexuals. aids incidence rates by gender and exposure category were estimated for the period 1980-2004. in 1980-1988, 63.6% of aids cases were homosexual or bisexual males and 10% were females. since 1988, there has been a decrease in the proportion of msm and an increase in the other categories. despite the incidence trends observed by exposure category, when the incidence rates were compared, the risk was much higher among msm as compared to heterosexuals. analysis of the aids epidemic dynamics in brazil emphasizes the importance of msm and male idu as higher-risk groups.
Sistemas de drenagem agrícola. Parte I: desenvolvimento do modelo e análise de sensibilidade
Borges Júnior, Jo?o C. F.;Ferreira, Paulo A.;Pruski, Fernando F.;Silva Júnior, Aziz G. da;
Revista Brasileira de Engenharia Agrícola e Ambiental , 2001, DOI: 10.1590/S1415-43662001000300001
Abstract: this study contemplates the development of a computational model seeking to fill the principal shortcomings of the existing models, and it also accomplishes a sensitivity analysis aiming to verify the effect of the input parameters on the results obtained by application of the model. the model accounts daily for the main components of the water balance in a controled volume at half distance between two parallel drains on unitary base and a height equal to the distance between the soil surface and the soil impermeable layer, simulating the movement of the water table. using the production functions that consider the stress caused by excess and lack of water in the root zone, this model accomplishes the economic analysis for several configurations of the drainage system, allowing for the determination of the economic spacing among drains besides informing about the economic viability of the enterprise. by sensitivity analysis it was verified that the parameters mean drain depth, horizontal soil saturated hydraulic conductivity, drainable porosity, climatic parameters, cn coefficient and the cost of the underground drain installation have a great influence on calculation of the economic drain spacing.
Sistemas de drenagem agrícola. Parte II: compara??o entre o modelo desenvolvido e outras metodologias
Ferreira, Paulo A.;Borges Júnior, Jo?o C. F.;Silva Júnior, Aziz G. da;Pruski, Fernando F.;
Revista Brasileira de Engenharia Agrícola e Ambiental , 2001, DOI: 10.1590/S1415-43662001000300002
Abstract: this study aimed at comparing the results obtained from the developed model, prodren, with those obtained from the drainmod model thoroughly tested in the united states, and with the simdreno model, as well as with methodologies traditionally used in dimensioning the agricultural drainage systems in areas of humid and sub-humid climates. simulations for lowering the water table were accomplished by using these three models. the results from the drainage system design for maize crop, which was obtained by using the three models as well as by application of the traditional methodologies, were compared. the results from simulations of the water table and the economic design of the drainage systems accomplished with prodren were similar to those obtained by drainmod and simdreno models. the spacing among drains obtained by application of the prodren, simdreno and drainmod models based on water balance and economic analysis were considerably larger than those resulting from the employment of traditional methodologies.
Coverage of the Brazilian population 18 years and older by private health plans: an analysis of data from the World Health Survey
Viacava, Francisco;Souza-Júnior, Paulo Roberto Borges de;Szwarcwald, Célia Landmann;
Cadernos de Saúde Pública , 2005, DOI: 10.1590/S0102-311X2005000700013
Abstract: this study analyzes data from the world health survey (whs) conducted in 2003, with a sample of 5,000 individuals 18 years and older. some 24.0% of the interviewees had private health insurance, and the main variables associated with private coverage were number of household assets, age, level of education, formal employment, living in municipalities with more than 50,000 inhabitants, and good self-rated health. the socioeconomic profiles of needs for and use of health services in the population covered by private health plans are different, confirming the findings of other studies reporting that this population segment as a whole presents better health conditions and greater use of services as compared to the population without private coverage, even after adjusting for socio-demographic variables and self-rated health. the whs data also suggest that individuals with private health plans do not always use their insurance to pay for services, except in the case of mammograms.
A macrobioética e os direitos humanos: um caminho para o humanismo dialético
Faleiros Júnior,Roberto Galv?o; Corrêa Borges,Paulo César;
Revista de Bioética y Derecho , 2012, DOI: 10.4321/S1886-58872012000300003
Abstract: with the development of human society, contemporaneously, producing numerous advances, but also some catastrophic. this contradictory phenomenon induces human beings to an absolutism of postures and a permanent quest for results, efficiency and accumulation. thus, the current form of technological and economic progress, in support of its objectives and purposes of overvaluation, inexorably weakens bioethics. with the historical development of human rights is demonstrated the need for effective protection of the environment, identifying some points of tension that arise when the fades are intensified the shortage of human and natural resources. the importance of resorting to the study of bioethics is evident from the crisis of the dominant scientific paradigm of the formulations and inconsistencies of a globalized society. this critical finding is needed, through the pursuit of human liberation, build up a dialectical humanism.
Infec??o pelo HIV durante a gesta??o: estudo-Sentinela Parturiente, Brasil, 2002
Souza Júnior,Paulo Roberto Borges de; Szwarcwald,Célia Landmann; Barbosa Júnior,Aristides; Carvalho,Marcelo Felga de; Castilho,Euclides Ayres de;
Revista de Saúde Pública , 2004, DOI: 10.1590/S0034-89102004000600003
Abstract: objective: to evaluate the actual coverage of hiv infection detection during pregnancy at national level. methods: the actual coverage of hiv testing during pregnancy was defined as the proportion of women who attended prenatal care visits (at least one visit), ordering hiv testing and knowledge of test result before delivery. the coverage was estimated by sampling procedures based on the 2002 sentinel surveillance study data. actual coverage inequalities were assessed by: country regions; population size of the municipality where delivery took place; and mother's schooling. results: the actual coverage of hiv testing during pregnancy was 52%. huge sociogeographic inequalities are seen between the northeastern (24%) and southern regions (72%); illiterate mothers (19%) and those with complete basic education (64%); mothers who delivered in small municipalities (36%) and those who delivered in municipalities with more than 500,000 inhabitants (66%). ministry of health recommendations were fully followed by only 27% pregnant women. conclusions: the study results show a need for actions aiming at increasing hiv detection coverage during pregnancy, and indicate that hiv/std programs should be intensified with joint strategies between the national aids program and infant-maternal programs.
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