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Mostrando 13-24 de 101 artigos, teses e dissertações.
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13. Movimento estudantil e repressão política : o Ato Público na Pontifícia Universidade Católica de São Paulo (1977) e o destino de uma geração de estudantes
This study examines the university student movement of the 1970s and the Public Act at the Pontifical Catholic University of São Paulo (PUC-SP) in 1977, culminating in an episode of police violence against the students. The focus of the search fell on the path of life of a group of former student activists in order to understand, first, how they are linked
Publicado em: 2008
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14. The economic impact of potential avian flu outbreaks in Brazil: a general equilibrium model analysis / Avaliação do impacto econômico de possíveis surtos da gripe aviária no Brasil: uma análise de equilíbrio geral computável
In the past few years, the bird flue virus H5N1 spread rapidly through various countries and continents, causing great economic and human losses. There is also the possibility of the disease arriving in Brazil, which would have a substantial impact on the countrys economy, particularly on its poultry sector. The present study addresses the lack of estimates
Publicado em: 2008
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15. Controle e avaliação de um conjunto gaseificador-combustor de fluxo concorrente, utilizando como combustível a biomassa de lenha de eucalipto / Control and evaluation of a set gasifier-combustor with co-current flow using eucalyptus wood as a fuel
Recently, concern has grown considering environmental issues associated with the preservation of natural resources with the intention of improving the present and future quality of life. Biomass gasification shows to be a sustainable technology for power generation with low greenhouse gas emissions. One of the problems by using the gasifier for air heating p
Publicado em: 2008
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16. Modal parameter identification of structures and rotating machine by adaptative filter / Identificação de parametros modais de estruturas e maquinas rotativas atraves da filtragem adaptativa
This work investigates the use of adaptive filters for parameter identification. Although adaptive algorithms are still rarely utilized in the mechanical engineering field, the recursive least square and recursive least square with QR decomposition methods can be implemented based on the second ordinary differential equations in order to characterize the mod
Publicado em: 2007
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17. Optimal dispatch of generating units in hydroelectric systems by heuristic based on langrangean relaxation and dynamic programming / Despacho otimo de unidades geradoras em sistemas hidreletricos via heuristica baseada em relaxação lagrangeana e programação dinamica
The daily scheduling operation of the electrical energy system has by target to find the dispatch generation to the next day which must be compatible with the daily generation target defined by the energy planning models and to be an operational guide. Because of its proximity with the real time operation the modeling must represent the main characteristic o
Publicado em: 2006
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18. AVALIAÇÃO DAS ALTERAÇÕES TRANSVERSAIS, ÂNTEROPOSTERIORES E VERTICAIS DA MAXILA EM PACIENTES SUBMETIDOS À EXPANSÃO RÁPIDA DA MAXILA ASSISTIDA CIRURGICAMENTE / Evaluation of the transversal alterations, antero -posterior of the dental and vertical arc of the palate in patients submitted to the rapid maxillary expansion surgically assisted.
The present work had to purpose evaluate the alterations produced in patients submitted to the fast expansion of maxilla by means of disjunction of the palatine suture median assisted surgically. The sample used to accomplish this study was composed of 34 pairs of models of 17 patients, being 6 of the masculine sex and 11 of the feminine sex. For each patien
Publicado em: 2006
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19. Custos e shut-down point da atividade leiteira em Minas Gerais
Através deste estudo, buscou-se avaliar os custos e identificar o shut-down point da atividade leiteira no Estado de Minas Gerais. Conforme as teorias da produção e do custo, o shut-down point representa o menor preço do produto em que a empresa poderia continuar produzindo, sendo suficiente apenas para cobrir os custos variáveis. Para preços situados
Revista de Economia e Sociologia Rural. Publicado em: 2005-12
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20. Nitric oxide and the resolution of inflammation: implications for atherosclerosis
The ubiquitous free radical, nitric oxide (NO), plays an important role in many biological processes including the regulation of the inflammatory response. Alterations in NO synthesis by endogenous systems likely influence inflammatory processes occurring in a wide range of diseases including many in the cardiovascular system (e.g. atherosclerosis). Progress
Memórias do Instituto Oswaldo Cruz. Publicado em: 2005-03
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21. MODELAGEM TRANSIENTE DA TRANSFERÊNCIA DE CALOR EM DUTOS DE PETRÓLEO OU GÁS, TERMICAMENTE ISOLADOS / TRANSIENT HEAT TRANSFER MODELING OF THERMALLY INSULATED OIL OR GAS PIPELINES
Subsea pipelines are employed not only for production but also for transportation. In both situations, warm oil loses heat to the cold sea water. The heat loss to the ambient is controlled by means of thermal insulation, which is designed for steady state operations. During shutdowns, the stagnant fluid in the pipeline loses heat to the cold surrounding, eve
Publicado em: 2005
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22. Aircraft loads assessment for windmilling sustained engine imbalance condition.
The failure of an aircraft engine fan blade produces an unbalanced rotor condition. Even after the engine is shutdown, the aerodynamic forces may keep the rotors running during the remainder of the flight. This condition can induce significant vibratory loads throughout the airframe that may damage the airframe structure and critical equipments and also affe
Publicado em: 2005
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23. The fluidized bed reactor with a prepolymerization system and its influence on polymer physicochemical characteristics
This work addresses the influence of a prepolymerization system on the behavior of the fluidized bed reactor used for polyethylene production. Its influence on the polymer's physicochemical characteristics and production was also studied. The results indicate that the use of prepolymerized catalyst particles results in milder temperatures in the fluidized be
Brazilian Journal of Chemical Engineering. Publicado em: 2003-06
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24. Modelagem, otimização, construção e avaliação de um protótipo de carneiro hidráulico. / Modeling, optimization and evaluation of a hydraulic ram.
This work was developed in the Hydraulics Laboratory of the Department of Rural Engineering at ESALQ/USP., with the goal of modeling, optimize and to evaluate a hydraulic ram. For that was developed a theoretical model, validated in the laboratory through the construction of an electronic valve commanded by a computer. Through the filming of water jet and us
Publicado em: 2002