904 resultados para Previdência privada, projeto de lei, análise, Brasil


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A solar alternative system for water heating is presented. It work on a thermosiphon, consisting of one or two alternative collectors and a water storage tank also alternative, whose main purpose is to socialize the use of energy mainly to be used by people of low income. The collectors were built from the use of pets bottles, cans of beer and soft drinks and tubes of PVC, ½ " and the thermal reservoirs from a drum of polyethylene used for storage of water and garbage placed inside cylinder of fiber glass and EPS ground between the two surfaces. Such collectors are formed by three elements: pet bottles, cans and tubes absorbers. The heating units, which form the collector contains inside the cans that can be closed, in original form or in the form of plate. The collectors have an absorber grid formed by eight absorbers PVC tube, connected through connections at T of the same material and diameter. It will be presented data of the thermal parameters which demonstrate the efficiency of the heating system proposed. Relative aspects will be boarded also the susceptibility the thermal degradation and for UV for the PVC tubes. It will be demonstrated that this alternative heating system, which has as its main feature low cost, presents thermal, economic and materials viabilities

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An alternative box-type solar oven constructed from the scrap iron of a gas conventional cook is presented, which functions principles are the effect greenhouse and the concentration. The oven of the conventional cook is the baking enclosure where the absorber (pot) of the solar oven is located, being re-covered for a glass blade for the generation of the greenhouse effect isolated lateral and having deep its and for a composite the plaster base and EPS. Segments of plain mirrors had been placed in the laterals of the oven for the concentration of the radiation and a reflecting parabola was introduced in the baking enclosure for the exploitation of the incident reflected radiation in the interior of the oven. The oven is mobile to allow one better aiming of exactly in relation to the apparent movement of the sun. The thermal economic and of materials viabilities of the stove in study will be demonstrate The average internal temperature of the absorber was around 150°C and the internal temperature around 120°C. Will demonstrate that its low cost and good thermal performance represents basic characteristics for the viability of large use of such archetype, mainly for cooking the decreases and averages temperatures. One will reveal that the archetype in study is competitive with the box-type solar cooker conceived in the whole world

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We studied the feasibility of using a system of Solar Water Heating (SAS) with low cost, for three configurations. In configurations I and II have the collector grid absorber composed of six PVC tubes placed in parallel on the tile cement. In configuration II, the PVC tubes were transparent cover made of plastic bottles. Configuration III uses a collector composed of 12 black HDPE pipes, supported on four cement tiles 2.44 m x 0.50 m, two by two overlapping and interspersed with a filling of glass wool, comprising an area exposed to the global radiation incident of 2.44 m2, with the top two tiles painted matte black. In this configuration, the HDPE pipes replace conventional PVC pipes painted black. The total cost of SAS for configuration III, the most economical, was around $ 150.00. For the configurations tested the system of operation was thermosyphon collector. The study showed that the proposed systems have good thermal efficiency, are easy to install and handle and have low cost compared to conventional.

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O objetivo deste trabalho foi investigar as expectativas de homens e mulheres com relação ao uso do álcool e a associação dessas com o comportamento de beber com embriaguez. Foi realizado inquérito epidemiológico, domiciliar, transversal, de base populacional, com amostra probabilística estratificada por conglomerados, na Região Metropolitana de São Paulo, Brasil. Foram entrevistadas 2.083 pessoas de ambos os sexos utilizando-se o questionário GENACIS (Gender, Alcohol and Culture: An International Study). Beber com embriaguez foi considerada variável dependente, e foram construídos modelos de regressão logística para cada sexo, ajustando-se os modelos para idade, escolaridade e renda. Todas as expectativas, exceto achar mais fácil falar com companheiro, associaram-se ao comportamento de beber com embriaguez. Nosso estudo mostrou que beber com embriaguez pode estar associado a expectativas com uso do álcool. Compreender essas expectativas pode contribuir para elaboração de estratégias mais efetivas de prevenção do beber excessivo.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Esta pesquisa se propôs a estudar o projeto de vida construído por alunos de duas escolas da cidade de Rio Claro-SP, considerando o Capital Social que estes alunos possuem a partir de suas realidades socioeconômicas e a importância que dão à escola quando pensam no futuro. Devido a rapidez exigida pela sociedade atual no que diz respeito as mudanças e aperfeiçoamento dos indivíduos pode-se notar um aumento na dificuldade dos jovens perante as escolhas necessárias para pensarem a vida futura, tanto no que se refere a área profissional, quanto as outras questões como sair de casa, formação da família etc. Assim é importante clarear qual a influência que o capital social destes jovens exerce sobre o projeto de vida que desejam construir. E também como este capital é capaz de fazer com que os alunos considerem a escola importante ou não para contribuir na construção do projeto de vida

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Este estudo analisa o desenvolvimento do processo de integração vertical na indústria petroquímica brasileira a partir da década de 90, focando nos determinantes para este movimento e confrontando com o mesmo processo adotado em grandes empresas mundiais da indústria

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Pós-graduação em Educação para a Ciência - FC

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