Paulo Cesar Silva Oliveira - Academia.edu (original) (raw)
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Papers by Paulo Cesar Silva Oliveira
Trabalhos em Linguística Aplicada, 2015
RESUMO Este trabalho apresenta considerações teóricas sobre a construção do sentido pelo tradutor... more RESUMO Este trabalho apresenta considerações teóricas sobre a construção do sentido pelo tradutor que emprega sistemas de memórias em um trabalho de tradução. Baseando-nos em uma análise de trabalhos produzidos por tradutores em formação com o auxílio desses sistemas, desenvolvemos uma reflexão sobre as implicações decorrentes da associação homem-máquina, uma relação que, cada vez mais frequente em setores que demandam traduções de materiais eletrônicos em nossa era, pode ter consequências diretas na produção do sentido pelo tradutor.
Revista Brasileira de Cirurgia Cardiovascular, 2009
Análise do perfil hidrodinâmico em diferentes modelos de bombas de rolete utilizadas em circulaçã... more Análise do perfil hidrodinâmico em diferentes modelos de bombas de rolete utilizadas em circulação extracorpórea Analysis of the hydrodynamic profile in different roller pumps models used in cardiopulmonary bypass Abstract Objective: Among the equipments used in cardiopulmonary bypass the roller pumps have great importance with various models available from several manufacturers. The calibration is an important factor in hemolysis rates and its potential is different in each. Researchers do not always approach details on the pump bed profiles assuming that the standardized calibration settings ensure equal and comparable values for all models of roller pumps. We have mainly two methods for calibration of pumps which also interferes on the hemolytic potential. In both of them, the characteristics of fluid impulsion defined by the pump bed design are not considered. The aim of this study is to compare the hydrodynamic profile of three models of roller pumps available in the Brazilian market. Method: The rollers occlusion was performed by measures of drop and dynamic calibration. Two different silicone diameter tubes were used (3/8 x 1/16 and 1/2 x 3/32 inches). Results: The profiles showed differences in their variances, P<0.01 for drop rate measures and P<0.0001 for dynamic calibration. Different changes in pressure were found between the pumps analyzed (P<0.002).
Biotropica, 2011
Ants frequently interact with fleshy fallen diaspores (fruits or seeds) not adapted for ant-dispe... more Ants frequently interact with fleshy fallen diaspores (fruits or seeds) not adapted for ant-dispersal. Such interactions are usually considered as opportunistic, but recent evidence has indicated that these ants may differ in their effects on diaspore survival and plant recruitment. We investigated if partner choices are recognizable among genera of ants and plants, and if ant and plant traits may influence such preferences in cerrado (savanna-like vegetation) from southeast Brazil. During a 2-yr period, 521 ant-diaspore interactions were recorded through various methods, yielding 71 ant species and 38 plant species. Exploitation of fallen diaspores was common among several ant genera, and included carnivorous, omnivorous, and fungivorous ants. Contrary to others areas around the world, where true myrmecochory (seed dispersal by ants) is common among shrubs, ants also exploited diaspores from several cerrado trees. Plant life form, diaspore size, and ant body size did not seem to explain the pattern of interactions observed. Two subsets of preferential interactions, however, segregated fungivorous ants from another group composed of carnivorous and omnivorous ants, probably influenced by the chemical composition of the plant diaspores. Omnivorous ants usually remove the fleshy portion of diaspores on spot and probably provide limited benefits to plants. Carnivorous and fungivorous ants usually remove the whole diaspore to the nest. As each of these ant groups may influence the fitness of diaspores in different ways, there are possible subtle pathways for the evolution of partner choices between ants and these non-myrmecochorous diaspores.
Arthropod-Plant Interactions, 2012
Edge effects may lead to changes in mutualistic plant-animal interactions, such as seed dispersal... more Edge effects may lead to changes in mutualistic plant-animal interactions, such as seed dispersal, that are critical to plant regeneration. However, research into edge effects is neglected in the Brazilian cerrado, the largest neotropical savanna. We evaluated the consequences of edge effects in the cerrado for the regeneration of Erythroxylum pelleterianum (Erythroxylaceae), a shrub that benefits from seed dispersal by ants. We compared air temperature, relative humidity, and vapor pressure deficit, as well as the frequency and outcome of ant-diaspore interactions between cerrado edges and interiors. The inner portion of cerrado was likely to be moister than its borders, but seed production and germination did not differ between edge and interior of cerrado. Ants removed more seeds near fragment edges than at the interior. However, Myrmicinae ants dominated ant-fruit interactions at edges. These ants are likely to provide few benefits to the seeds. Seedlings of E. pelleterianum growing close to Ponerinae ant nests showed higher survival than seedlings growing away from nests in the interior of cerrado, but such effect disappeared near edges. Widespread seedling mortality due to a higher evaporative demand at edges may partially account for this effect. Furthermore, Ponerinae's nests also showed a lower residence time near edges, decreasing possible benefits derived from ant colony activity such as nutrient enrichment and protection against insect herbivores. Edge effects could change the structure and dynamics of vegetation in cerrado fragments, due in part to the collapse of the mutualistic interactions demonstrated here.
REVISTA ESCRITA, 2012
Resumo Este artigo investiga a ficção de Bernardo Carvalho a partir dos questionamentos acerca de... more Resumo Este artigo investiga a ficção de Bernardo Carvalho a partir dos questionamentos acerca de um pressuposto "domínio do realismo" nas narrativas contemporâneas. A questão da paratopia de autor é o ponto de partida para a discussão do papel do escritor no campo literário. A essas indagações, acrescentaremos o problema das relações entre representação e realidade, história e ficção, a partir das leituras críticas de Luiz Costa Lima e Karl Erik Schollhammer, dentre outros.
Trabalhos em Linguística Aplicada, 2015
RESUMO Este trabalho apresenta considerações teóricas sobre a construção do sentido pelo tradutor... more RESUMO Este trabalho apresenta considerações teóricas sobre a construção do sentido pelo tradutor que emprega sistemas de memórias em um trabalho de tradução. Baseando-nos em uma análise de trabalhos produzidos por tradutores em formação com o auxílio desses sistemas, desenvolvemos uma reflexão sobre as implicações decorrentes da associação homem-máquina, uma relação que, cada vez mais frequente em setores que demandam traduções de materiais eletrônicos em nossa era, pode ter consequências diretas na produção do sentido pelo tradutor.
Revista Brasileira de Cirurgia Cardiovascular, 2009
Análise do perfil hidrodinâmico em diferentes modelos de bombas de rolete utilizadas em circulaçã... more Análise do perfil hidrodinâmico em diferentes modelos de bombas de rolete utilizadas em circulação extracorpórea Analysis of the hydrodynamic profile in different roller pumps models used in cardiopulmonary bypass Abstract Objective: Among the equipments used in cardiopulmonary bypass the roller pumps have great importance with various models available from several manufacturers. The calibration is an important factor in hemolysis rates and its potential is different in each. Researchers do not always approach details on the pump bed profiles assuming that the standardized calibration settings ensure equal and comparable values for all models of roller pumps. We have mainly two methods for calibration of pumps which also interferes on the hemolytic potential. In both of them, the characteristics of fluid impulsion defined by the pump bed design are not considered. The aim of this study is to compare the hydrodynamic profile of three models of roller pumps available in the Brazilian market. Method: The rollers occlusion was performed by measures of drop and dynamic calibration. Two different silicone diameter tubes were used (3/8 x 1/16 and 1/2 x 3/32 inches). Results: The profiles showed differences in their variances, P<0.01 for drop rate measures and P<0.0001 for dynamic calibration. Different changes in pressure were found between the pumps analyzed (P<0.002).
Biotropica, 2011
Ants frequently interact with fleshy fallen diaspores (fruits or seeds) not adapted for ant-dispe... more Ants frequently interact with fleshy fallen diaspores (fruits or seeds) not adapted for ant-dispersal. Such interactions are usually considered as opportunistic, but recent evidence has indicated that these ants may differ in their effects on diaspore survival and plant recruitment. We investigated if partner choices are recognizable among genera of ants and plants, and if ant and plant traits may influence such preferences in cerrado (savanna-like vegetation) from southeast Brazil. During a 2-yr period, 521 ant-diaspore interactions were recorded through various methods, yielding 71 ant species and 38 plant species. Exploitation of fallen diaspores was common among several ant genera, and included carnivorous, omnivorous, and fungivorous ants. Contrary to others areas around the world, where true myrmecochory (seed dispersal by ants) is common among shrubs, ants also exploited diaspores from several cerrado trees. Plant life form, diaspore size, and ant body size did not seem to explain the pattern of interactions observed. Two subsets of preferential interactions, however, segregated fungivorous ants from another group composed of carnivorous and omnivorous ants, probably influenced by the chemical composition of the plant diaspores. Omnivorous ants usually remove the fleshy portion of diaspores on spot and probably provide limited benefits to plants. Carnivorous and fungivorous ants usually remove the whole diaspore to the nest. As each of these ant groups may influence the fitness of diaspores in different ways, there are possible subtle pathways for the evolution of partner choices between ants and these non-myrmecochorous diaspores.
Arthropod-Plant Interactions, 2012
Edge effects may lead to changes in mutualistic plant-animal interactions, such as seed dispersal... more Edge effects may lead to changes in mutualistic plant-animal interactions, such as seed dispersal, that are critical to plant regeneration. However, research into edge effects is neglected in the Brazilian cerrado, the largest neotropical savanna. We evaluated the consequences of edge effects in the cerrado for the regeneration of Erythroxylum pelleterianum (Erythroxylaceae), a shrub that benefits from seed dispersal by ants. We compared air temperature, relative humidity, and vapor pressure deficit, as well as the frequency and outcome of ant-diaspore interactions between cerrado edges and interiors. The inner portion of cerrado was likely to be moister than its borders, but seed production and germination did not differ between edge and interior of cerrado. Ants removed more seeds near fragment edges than at the interior. However, Myrmicinae ants dominated ant-fruit interactions at edges. These ants are likely to provide few benefits to the seeds. Seedlings of E. pelleterianum growing close to Ponerinae ant nests showed higher survival than seedlings growing away from nests in the interior of cerrado, but such effect disappeared near edges. Widespread seedling mortality due to a higher evaporative demand at edges may partially account for this effect. Furthermore, Ponerinae's nests also showed a lower residence time near edges, decreasing possible benefits derived from ant colony activity such as nutrient enrichment and protection against insect herbivores. Edge effects could change the structure and dynamics of vegetation in cerrado fragments, due in part to the collapse of the mutualistic interactions demonstrated here.
REVISTA ESCRITA, 2012
Resumo Este artigo investiga a ficção de Bernardo Carvalho a partir dos questionamentos acerca de... more Resumo Este artigo investiga a ficção de Bernardo Carvalho a partir dos questionamentos acerca de um pressuposto "domínio do realismo" nas narrativas contemporâneas. A questão da paratopia de autor é o ponto de partida para a discussão do papel do escritor no campo literário. A essas indagações, acrescentaremos o problema das relações entre representação e realidade, história e ficção, a partir das leituras críticas de Luiz Costa Lima e Karl Erik Schollhammer, dentre outros.