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Search Results: 1 - 10 of 333906 matches for " Rodrigo Patto Sá; "
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Modernizando a repress?o: a Usaid e a polícia brasileira
Motta, Rodrigo Patto Sá;
Revista Brasileira de História , 2010, DOI: 10.1590/S0102-01882010000100012
Abstract: the article analyses an important but scarcely known aspect of usaid's activity in brazil: the advisement in order to train and modernize brazilian police corporations. although already in activity since the fifties, the programm of police advisory was intensified after the cuban revolution and reinterpreted according to the modernization theories that prevailed in the sixties, promising the poor countries a better alternative of development than that offered by the revolutionaries. the text tries to synthesize the main aspects of this program (active in brazil from 1960 to 1972) and to comprehend the objectives of the both sides involved, in the belief that this approach may help us to avoid superficial assessment.
Model of Three-Phase Transmission Line with the Theory of Modal Decomposition Implied  [PDF]
Rodrigo Cleber da Silva, Sérgio Kurokawa
Energy and Power Engineering (EPE) , 2013, DOI: 10.4236/epe.2013.54B217

This paper shows the development of transmission line model, based on lumped element circuit that provides answers directly in the time and phase domain. This model is valid to represent the ideally transposed line, the phases of each of the small line segments are separated in their modes of propagation and the voltage and current are calculated at the modal domain. However, the conversion phase-mode-phase is inserted in the state equations which describe the currents and voltages along the line of which there is no need to know the user of the model representation of the theory in the line modal domain.

Estabilidade de produ??o de híbridos simples e duplos de milho oriundos de um mesmo conjunto gênico
Machado, Juarez Campolina;Souza, Jo?o Candido de;Ramalho, Magno Antonio Patto;Lima, José Luís;
Bragantia , 2008, DOI: 10.1590/S0006-87052008000300010
Abstract: the objective of the present work was to study the adaptability and stability of single and double-crosses of maize originated from the same gene pool. ten commercial single-crosses and all possible double-crosses, obtained from a complete diallel, were evaluated. seeds of the double-crosses were obtained in an experimental area of the biology department at universidade federal de lavras (dbi/ufla). the experiments were conducted in 15 environments in the 2005/06 growing season, on farms and in experimental stations. the cultural practices were the ones normally used by farmers or experimental stations for maize. the entries were evaluated in randomized complete blocks design with three replications per environment. the trait under study was husked ears yield (kg ha-1), corrected to 13% of moisture content. nonparametric statistics were used to study hybrids adaptability and stability. the contribution of each hybrid to the genotype-by-environment interaction and the deviation in relation to the maximum performance in each environment was determined. the double-crosses were on average more stable, although some single-crosses were as stable as the double-crosses.
Sevoflurano e desflurano sobre o ritmo cardíaco de c?es tratados com infus?o contínua de doses crescentes de adrenalina
Nunes, Newton;Rezende, Márlis Langenegger de;Santos, Paulo Sérgio Patto dos;Wang, Lilia;
Ciência Rural , 2004, DOI: 10.1590/S0103-84782004000100019
Abstract: the volatile anesthetics increase the sensibility of the myocardium or its conduction system to the action of endogenous and/or exogenous epinephrine, predisposing the animal to cardiac arrhythmias. among the volatile anesthetics, sevoflurane and desflurane are quite recent drugs and even though they have antiarrhythmogenic characteristics, there aren’t studies comparing these properties. the aim of this work was to study comparatively the cardiac rhythm and observe occasional atrioventricular blockages in dogs anesthetized with desflurane and sevoflurane, receiving increasing doses of epinephrine. 20 healthy adult male and female mongrel dogs were used. the animals were separated in two groups (g1 and g2). in g1, anesthesia was induced with propofol (10mmg-1.kg-1iv) and maintained with sevoflurane (1.5 mac). thirty minutes after the begin of volatile anesthetic administration, the epinephrine infusion was initiated at a dose of 1mmg.kg-1.min-1. at each 10 minutes the dose was increased in 1mmg.kg-1.min-1 until 6mmg.kg-1.min-1. for g2, the same methodology was used, except that sevoflurane was replaced by desflurane (1.5 mac). at each epinephrine dose, the non-sinusal cardiac beats were counted and the occurrence of atrioventricular blockages was evaluated. the numerical data were submitted to profile analysis and kruskall-wallis. the results allow to conclude that desflurane reduces in a more efficient way the arrhythmia produced by epinephrine and also the occurrence of atrioventricular blockages.
Emprego da levomepromazina no bloqueio da arritmia induzida pela adrenalina em c?es anestesiados pelo Sevoflurano
Rezende, Márlis Langenegger de;Santos, Paulo Sérgio Patto dos;Nunes, Newton;Bolzan, Aline Adriana;
Ciência Rural , 2000, DOI: 10.1590/S0103-84782000000300008
Abstract: the aim of this work was to study the use of levomepromazine, as an antiarrhythmogenic drug, in dogs anesthetized with sevoflurane. twenty-one male and female healthy adult mixed breed dogs were used. the dogs were alocated in two groups, one with 11 (g1) and other with 10 (g2) animals. to g1 was administered, intravenously, 0.2ml/kg of 0.9% saline solution (placebo), followed by anesthetic induction with tiopental 15 minutes later. the intubation was proceeded, followed by imediate administration of sevoflurane at 2.5v% through semi-closed anesthetic circuit. after 20 minutes of the anesthetic induction, administration of 2% epinephrine solution had begun, in increasing doses of 1, 2, 3, 4 and 5mg/kg/min (m1 to m5, respectively), with increment of the doses at 10 minutes intervals. for g2 the same methodology was used, replacing the placebo by levomepromazine, at 1mg/kg. electrocardiographic study was realized, in lead ii, from the induction of the anesthesia. for statistical effect it was counted the total number of heart beats of non sinusal origin, coincident with each epinephrine dose. the numeric data were submitted to analysis of profile that demonstrated ventricular sustained arrhythmia, with the number of ectopic beatings growing from m1 to m3 and decreasing from m3 to m5, in g1. in g2, the ventricular sustained arrhythmia was observed only in m5. these results allowed the conclusion that levomepromazine minimizes ventricular epinephrine-induced arrhythmia in dogs anesthetized with sevoflurano.
Análise espacial e de vizinhan?a no melhoramento genético de plantas
Costa, Janaina Ribeiro;Bueno Filho, Júlio Sílvio de Sousa;Ramalho, Magno Ant?nio Patto;
Pesquisa Agropecuária Brasileira , 2005, DOI: 10.1590/S0100-204X2005001100004
Abstract: three forms of spatial analysis were compared to the analysis of the normal gauss-markov model in genetical experiments, supposing progeny effects as random: moving averages on raw data (mm), moving averages on residual data (papadakis - ppd), and spatial analysis modelling with residual covariances (ae). the local control information was initially ignored to test the effectiveness of spatial analysis. thereafter, the different forms of spatial analysis were applied to the complete model, considering the local control of lattice design. the average values of proportions between estimates of variance components and of heritability were used as a discussion guide to determine the best form of analysis. results showed that ignoring the experimental design, using spatial information was not effective, in general. in average, mm and ppd improved the original model justified by design, in contrast to ae. ae, although ineffective, did not change variance component estimates and heritability. this property guarantees that the combination of random effects for progenies and ae does not violate the assumptions (some of these justified by the design). this is specially useful in large experiments, with a huge number of progenies.
Using genealogy to improve selection efficiency of pedigree method
Nunes, José Airton Rodrigues;Moreto, Alexsander Luís;Ramalho, Magno Antonio Patto;
Scientia Agricola , 2008, DOI: 10.1590/S0103-90162008000100004
Abstract: in the pedigree method of conducting an autogamous population of segregating plants, the genealogy of the progenies is registered. although labor-intensive, these data are rarely used. one possibility of exploiting this information is to improve selection efficiency using blup (best linear unbiased prediction). in this study blup with genealogy inclusion was compared to the mean in the progenies evaluation conducted by the pedigree method. progenies of crosses of the common bean lines brs mg talism? and brs valente in f4:6 and f4:7 were used. the 256 f4:6 progenies were sown in february 2005, in southeast of brazil, in a 16 ′ 16 simple lattice design. the grain yield data were subjected to blup analysis with inclusion of genealogy. based on this analysis and the mean, the 30 progenies with best and worst performance were selected. these 60 f4:7 progenies were classified in relation to the origin, i.e., selected by blup, mean, or blup and mean and coincident results were obtained. in the selection for best performance, the efficiency of blup was 2.4% higher than the mean. in the selection for the opposite extreme, blup analysis was however not advantageous. the progenies ′ environments interaction indicates the need for an evaluation of the progenies in different environments before beginning selection.
Stability of combining ability effects in maize hybrids
Machado, Juarez Campolina;Souza, Jo?o Candido de;Ramalho, Magno Antonio Patto;Lima, José Luís;
Scientia Agricola , 2009, DOI: 10.1590/S0103-90162009000400010
Abstract: general and specific combining ability effects are important indicators in a maize (zea mays l.) breeding program aiming hybrid development. the objectives of the present study were to estimate the general (gca) and specific combining abilities (sca) effects of commercial maize hybrids using a complete diallel scheme and to assess the stabilities of these estimates. fifty-five entries were assessed; ten commercial single-crosses and all possible double-crosses. the experiments were carried out in 12 environments in the 2005/06 growing season. a randomized complete block design was used with three replications per environment. ear yield was evaluated, corrected to 13% of moisture content. the combined diallel analysis involving all environments was performed and the stability of general and specific combining ability effects was investigated. the underlying nonparametric statistics evaluated the contribution of each effect to the genotype by environment interaction. non-additive effects were more important for this set of hybrids than the additive effects. it was possible to select parents with high stability for combining ability and with high gca.
Sevoflurano e desflurano sobre o ritmo cardíaco de c es tratados com infus o contínua de doses crescentes de adrenalina
Nunes Newton,Rezende Márlis Langenegger de,Santos Paulo Sérgio Patto dos,Wang Lilia
Ciência Rural , 2004,
Abstract: Os anestésicos inalatórios sensibilizam o miocárdio ou seu sistema de condu o à a o das catecolaminas endógenas e/ou exógenas, predispondo o animal às arritmias cardíacas. Dentre os anestésicos voláteis, o sevoflurano e o desflurano s o fármacos relativamente recentes e, embora sejam dotados de características relacionadas a n o sensibiliza o do miocárdio às catecolaminas, desconhecem-se estudos que comparem suas eventuais propriedades antiarritmogênicas. Com o objetivo de estudar, comparativamente, o comportamento do ritmo cardíaco e observar eventuais bloqueios atrioventriculares em c es anestesiados pelo sevoflurano e desflurano e submetidos à infus o contínua de adrenalina, foram utilizados 20 animais adultos, os quais foram separados em dois grupos de igual número (G1 e G2). Aos c es do G1, foi administrado propofol, na dose média de 10mmg.kg-1; em seguida os animais receberam sevoflurano, a 1,5CAM. Decorridos 30 minutos do início da administra o do anestésico volátil, iniciou-se a infus o de adrenalina na dose de 1mmg.kg-1.min-1. A cada 10 minutos, a dose da catecolamina foi acrescida em uma unidade, cessando-se a administra o em 6mmg.kg-1.min-1. Para o G2, empregou-se a mesma metodologia, substituindo-se o sevoflurano pelo desflurano, administrado a 1,5CAM. A cada dose de adrenalina, foi feita contagem de batimentos ventriculares ectópicos, bem como a observa o de bloqueios atrioventriculares. Os achados foram tratados pelos métodos estatísticos de Análise de Perfil e Kruskall-Wallis. Os resultados permitiram concluir que o desflurano minimiza de maneira mais eficiente a arritmia induzida pela adrenalina, além de reduzir a incidência de bloqueios atrioventriculares.
Efeitos cardiorrespiratórios da buprenorfina em c es anestesiados pelo desfluorano
Souza Almir Pereira de,Nunes Newton,Santos Paulo Sérgio Patto dos,Nishimori Celina Tie
Ciência Rural , 2005,
Abstract: Objetivou-se, com este estudo, avaliar os efeitos da buprenorfina sobre variáveis cardiovasculares e respiratórias em c es durante anestesia com desfluorano. Para tanto, foram utilizados 20 c es adultos, distribuídos em dois grupos (GB e GC). A anestesia foi induzida com propofol (8mg kg-1 IV) e em seguida os animais foram intubados com sonda de Magill, a qual foi conectada ao aparelho de anestesia para administra o de desfluorano (1,5 CAM). Após 30 minutos, foi aplicado no GB buprenorfina (0,02mg kg-1) e no GC solu o de NaCl à 0,9% (0,05ml kg-1). Avaliaram-se: freqüências cardíaca e respiratória (FC e broken vertical bar); press es arteriais sistólica, diastólica e média (PAS, PAD e PAM); débito cardíaco (DC); press o venosa central (PVC); e as variáveis hemogasométricas pH, PaCO2, PaO2, HCO3, SatO2 e DB. As colheitas dos dados foram feitas aos 30 minutos após o início da administra o do desfluorano (MO), 15 minutos após a administra o do opióide ou placebo (M15), e a cada 15 minutos após Ml5 (M30, M45, M60 e M75). A avalia o estatística dos dados foi efetuada por meio de Análise de Perfil (P<0,05). Houve discreta redu o da FC no GB, enquanto as outras variáveis cardiovasculares n o tiveram redu o significativa. A broken vertical bar e o pH tiveram redu es no GB, enquanto a PaCO2 esteve aumentada. Concluiu-se que a inclus o da buprenorfina durante anestesia inalatória pelo desfluorano determina discretas altera es cardiovasculares, bem-como potencializa a hipoventila o promovida pelo desfluorano, com a manifesta o de hipercapnia, o que n o contra-indica o seu uso em pacientes estáveis.
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