355 resultados para Estrutura de camadas (Solidos)


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The human being has a dependency with the natural environment, since it is from withdrawing resources from it is essential for their survival. But this relationship appears to be unbalanced from the moment that society emerges and changes the substrate in which land is located. In this context the study about the formation of technogenic deposits, has assisted in the preparation of environmental diagnoses in an area very changed by society. Technogenic deposits are sedimentary deposits originated by human activities in the environment, with special emphasis in this work in the fluvial plains. Their classification depends on both the manufactured materials found in its layers, and the processes that led to its formation. Thus, the main objective was to understand the formation history of technogenic deposits in the fluvial plains of the Santo Anastacio river and streams of Cedro and Cedrinho surrounding the dam of SABESP (Basic Sanitation Company of São Paulo) in Presidente Prudente-SP. The experimental proceedings are based mainly on realization of fieldwork to characterization study area, collection of technogenic materials in PVC´s (polyvinyl chloride) tube, and analysis of laboratory through of particle size analysis (EMBRAPA, 1997) of the technogenics layers... (Complete abstract click electronic access below)

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

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Pós-graduação em Química - IQ

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Este trabalho objetiva analisar os mecanismos segmentais de expressão da modalidade epistêmica, sustentando a hipótese de que o grau de comprometimento do falante pode ser avaliado em correspondência com o nível da organização estrutural da frase em que o modâlizador atua.

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Pós-graduação em Engenharia Mecânica - FEG

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Pós-graduação em Ciência e Tecnologia de Materiais - FC

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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The present study evaluated the mechanical properties of pieces of wood coming from the roof structure of a residence subject fire in the rural area of Itapeva/SP. The structure was built 25 years ago using wooden beams of the species Guarucaia (Peltophorum vogelianum), where the specimens were removed. The research methodology included qualitative evaluation of the samples, estimating the layer pyrolysis and carbonization of the wood, measuring of density and mechanical tests of compression parallel to grain, tension parallel to grain and shear. The mechanical properties of wood were analytically correlated with the layers carbonization and pyrolysis that are influenced by the temperature and time of fire; these values were estimated at 1000 °C and two hours for the case in question. The results indicate that the strength properties of degraded wood are different from a healthy wood. The level of thermodegradation, in general, can be measured by density, result in weight loss due to decomposition of the wooden components.

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The main purpose of this research is to raise, through lab rehearsals, the geometric properties of some oxisols from the region of Vale do Paraíba as well as comparing them to demands prescribed by Technical Specifications ESP08/05 of the Road Department of the State of Paraná, for sub-base or fine grained lateritic soil base (SAFL) and in the Technical Specification ET-DEP00/006 of the Road Department of the State of São Paulo (DER/SP) for subbase or crushed stone base. According to the results that were obtained it will be feasible to appraise the usage of these sorts of soils in structure layers of low-weight traffic pavements