Convecção mista em cavidades com fontes de calor aletadas

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Aplicação da computação simbólica na resolução de problemas de condução de calor em cilindros vazados com condições de contorno convectivas

Pós-graduação em Engenharia Mecânica - FEG

Análise do escoamento turbulento por um queimador industrial a gás utilizando dinâmica dos fluidos computacional

Pós-graduação em Engenharia Mecânica - FEG

Genetic variability among Commelina weed species from the states of Paraná and São Paulo, Brazil

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Estudo de controladores aplicados a inversores para UPS com operação ilhada

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

A influência do controlador gupfc no sistema elétrico de potência visando a estabilidade a pequenas perturbações

Pós-graduação em Engenharia Elétrica - FEIS

Theoretical and experimental study of agricultural spraying using CFD

This paper presents a computational fluid dynamics (CFD) application about the axial fan design used in an agricultural spraying system with a theoretical and experimental analysis of comparative results between the characteristic curves of a fan for several rotations and numerical results for the influence of blade attack angle variation and optimization of the spraying system, both for a same rotation. Flow was considered three-dimensional, turbulent, isothermal, viscous and non-compressible in a steady state, disregarding any influence of the gravity field. The average turbulent field was obtained from the application of time average where the turbulence model required for closing the set of equations was the k-E model. Resolution of all connected phenomena was achieved with the help of a fluid dynamics computer, CFX, which uses the finite volumes technique as a numerical method. In order to validate the theoretical analysis, an experiment was conducted in a circular section of a horizontal wind tunnel, using a Pitot tube for pressure readings. The main results demonstrate that the methodology used, based on CFD techniques, is able to reproduce the phenomenological behavior of an axial fan in a spraying system because results were very reliable and similar to experimentally measured ones.

Some Comments Regarding the Synthetic (X)over-bar Chart

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Potência atada na máxima fase estável de lactato e índices do desempenho aeróbio de nado

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Escolas públicas no campo: retrospectiva e perspectivas em um contexto de projetos políticos em disputa

In present article, we present reflections on the process of closing public schools in the countryside in Brazil. Through bibliographical survey, as well as documental research, we carried out a retrospective analysis of the historical moment in which the implementation of policies of mass education directed to people living in rural areas occurs. We have also sought to raise socio-political-economic aspects of the moment in which the process of closing these schools is intensified. The results obtained suggest possible implications of this closure policy, in addition to indicating some of the challenges posed to the public policy of education in the country; for example, the Brazilian federal context and the budget limitations imposed to subnational governments with regard to the funding of school education, particularly in relation to small municipalities and/or municipalities with low tax revenues. This situation quite often occurs because these municipalities present reduced budgets, depending largely on transfers of financial resources from other spheres of the Government, either federal or state, the so-called intergovernmental budgetary transfers; namely, the Municipalities Participation Fund. Such issues demand the resumption of debates about the federative pact, in particular with regard to fiscal federalism, given that the financial capacity of each subnational government is crucial to the implementation of educational policies.

Políticas públicas em educação ambiental no contexto da Conferência Nacional de Educação - CONAE 2010

n this paper I pose some questions that I systematized after taking part in a colloquium proposed by the National Conference on Education (CONAE 2010) to discuss the theme “Environmental Education and Curriculum Contextualization”. Regarding public environmental education policies, I try to indicate some perspectives that are both coherent with what Brazilian educators and environmentalists have been proposing and considered necessary for the consolidation of an Articulated National Education System. I present a synthesis of the environmental education proposals systematized in the CONAE Reference Document, which was designed as a guide to state and local conferences. I make an effort to carry out a preliminary analysis of both the process and the content of the public environmental education proposals systematized in the Essential Documents (Volumes I and II), Thematic Plenary Meeting Documents, and Final Document. Furthermore, I try to present a short synthesis of the prevailing tendencies of educational policies in Brazil in the last decades, pointing out the meaning and need of social activism for the construction of public policies for education, in general, and for environmental education, specifically.

Monitoração dos parâmetros reprodutivos e perfil sorológico do herpesvírus caprino tipo 1 e do herpesvírus bovino tipo 1 em rebanhos caprinos dos estados de São Paulo e Minas Gerais

Pós-graduação em Medicina Veterinária - FCAV

Protocolos de natação em modelos experimentais com ratos

Exercise physiology has attempted to reproduce the experimental exercise in the laboratory using mainly rats. The swimming exercise has emerged as one of the leading research in these type ergometers. Thus, this research consisted of a literature review addressing the key issues which involve the exercise of swimming in the model rats. Training of aerobic and anaerobic swimming, evaluation models and models of periodization were the topics suggested in this research. In several studies, models of aerobic and anaerobic training have been proposed with the aim of studying their effect on normal and abnormal physiological parameters. However, earlier studies lacked methods of analysis aiming to determine the exercise intensity in the animal model. For this reason, in the last decade, assessment models have been adapted for humans to animals, especially rats. The maximal lactate steady state (MLSS) and lactate minimum (LM) are among the various techniques used to measure the amount of effort produced by swimming exercise in rats. Thereafter, based on biochemical parameters such as lactate, swimming exercise in rats has become the highest-rated, ie, using as reference the anaerobic threshold (AT). In another aspect, an entirely new line of research has tried to understand and promising swimming training in a periodized and its effects on some biochemical parameters. But this is an area little researched so far. Thus, the experimental model of swimming has proved an important resource of exercise physiology. From this model, it becomes possible to study the exercise, especially swimming, in more accurate, based on invasive and incisive analysis of the rat

Hopping-tunneling model to describe electric charge injection at metal/organic semiconductor heterojunctions

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Convergence towards asymptotic state in 1-D mappings: a scaling investigation

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)