Subsoil
Mostrando 25-36 de 52 artigos, teses e dissertações.
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25. CORRECTION OF THE ACIDITY OF THE SOIL IN SUBSURFACE IN A OXISSOL OF FRANC-SANDY TEXTURE UNDER NO TILLAGE / CORREÇÃO DA ACIDEZ DO SOLO EM SUBSUPERFÍCIE EM UM LATOSSOLO DE TEXTURA FRANCO-ARENOSA SOB PLANTIO DIRETO
In tropical and subtropical areas, especially, where there is the dry period occurrence, the acidity subsurface (below the 10 cm) it has been pointed as one of the limitation causes to the growth of roots and the agricultural productivity. In the state of Rio Grande do Sul, in the last years, reports exist that areas under no tillage that don t present excha
Publicado em: 2008
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26. Development and implantation of an operational setup designed for the evaluation of new tracers for oil reservoir characterization / Desenvolvimento e inplantação de um sistema operacional para a qualificação do desempenho de novos traçadores para reservatórios de petróleo
Petroleum, nowadays, is one of the most important natural resources in the world, since it is one of the main primary sources of energy and also raw material for many different products. It can be found accumulated in the subsoil, and was produced from the remaining portions of animals and vegetables, in a process that took millions of years to be concluded.
Publicado em: 2008
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27. Behavior of different piles, conducted in diabasic soil, submited to uplift efforts / Estudo do comportamento a tração axial de diferentes tipos de estacas em solo de diabasio da região de Campinas/SP
This research presents the behavior of different kinds of piles conducted in unsaturated diabasic porous soil submitted to uplift forces. For this research there were built the follow piles: three instrumented root piles with 12m length and 410mm of nominal diameter, one root pile with nominal diameter of 310mm and 23m length, two metallic piles type W250x32
Publicado em: 2008
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28. Perfil geológico-geotécnico do subsolo ao longo do traçado do metrô de Goiânia / Geological-geotechnical profile of the subsoil along the Goiânia suway alignment
The building of the Goiânia subway is one of the items in the Proposal for Life Quality Improvement and Social Inclusion of the population of the Metropolitan Region of Goiânia (MRG), involving the municipal administrations of Goiânia and Aparecida de Goiânia. The proposal, which is part of the rearrangement of the MRG public transport system and follows
Publicado em: 2007
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29. Uso de resíduos vegetais em solos ácidos sob sistema de plantio direto
The Brazilian soils are characterized by low natural fertility, where the main chemical limitations are high acidity and low basic exchangeable cation saturation that can affect the majority of cash crop productions. Liming is the principal practice to reduce soil acidity and to increase basic cations in these soils with high pH-dependent cation exchangeable
Publicado em: 2007
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30. Avaliação do teor de metais em sedimento do rio Betari no Parque Estadual Turístico do Alto Ribeira: PETAR, São Paulo, Brasil
The subsoil of the Vale do Ribeira was the focus of mining industries for the exploration of lead, mainly inside the park - PETAR. Despite the fact that the exploration has ended, the environmental effects of those activities are still present, due to great amounts of heavy metals that are leached. Concentrations of pseudo-total and bioavailable metals were
Química Nova. Publicado em: 2006-02
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31. Avaliação do grau do dano das estruturas do subsolo de três edifícios situados na Região Metropolitana do Recife / Evaluation of the degree of damage in the subsoil structures of three buildings situated in the Region Metropolitan of Recife/PE
Procurando conhecer o grau de deterioração precoce das estruturas de concreto armado dos edifícios residenciais da Região Metropolitana da Cidade do Recife, Estado de Pernambuco, este trabalho visa, utilizando um método de quantificação dos danos e o uso de ensaios, avaliar as patologias das estruturas estudadas. Estudou-se três edifícios residencia
Publicado em: 2006
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32. Estudo do comportamento carga VS recalque de estacas raiz carregadas a compressão / Study of the load VS settlement behavior of root piles submitted to compression efforts
In this research, the behavior of the curve load versus settlement ofloaded isolated pile to the compression is analyzed, through forecast methods. Two root piles had been assayed, one with 23m oflength and 31 cm of diameter, and the other with length of 12 m and 41 cm of diameter, in order to attribute the behavior of the interaction ground-pile to one or a
Publicado em: 2006
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33. Changes in soil chemical attributes and performance of corn as affected by surface liming and nitrogen application on oats under no-till system / Alterações químicas do solo e resposta do milho à calagem superficial e à adubação nitrogenada realizada na aveia em sistema plantio direto
Os efeitos da calagem superficial e da adubação nitrogenada nas alterações químicas do solo, na produção de massa seca de aveia preta e no crescimento radicular, nutrição mineral e rendimento de grãos da cultura do milho, em sistema plantio direto, foram avaliados em um experimento realizado em Latossolo Vermelho Distrófico textura média, em Pont
Publicado em: 2006
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34. Estudo de estacas de madeira para fundações de pontes de madeira / Study of timber piles for wooden bridges foundations
This work presents a theoretical and experimental study of timber piles, including the instrumentation of the timber piles of a wooden bridge foundation, in order to generate recommendations for the project of this type of foundations for small wooden bridges. The experimental work was made in two stages. In the first stage the mechanical properties of timbe
Publicado em: 2005
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35. Chemical analysis of solid waste for agricultural and environmental studies / Analise quimica de residuos solidos para estudos agroambientais
The practice of using organic and inorganic wastes as fertilizers is an increasingly important agricultural practice. The risks of indiscriminate disposal of waste onto the soil are associated mainly with the transport of pollutants by the infiltration of percolated liquids, which are responsible for the contamination of the subsoil and underground waters. B
Publicado em: 2005
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36. INVERSION OF PARAMETERS IN SEISMIC DATA BY GENETIC ALGORITHMS / INVERSÃO DE PARÂMETROS EM DADOS SÍSMICOS POR ALGORITMOS GENÉTICOS
This dissertation investigates the use of Genetic Algorithms applied to seismic data with the objective of obtaining physical parameters and seismic attributes that would facilitate the characterization of rocks in terrestrial subsoil. The seismic data has been extensively utilized in the field of petroleum exploration. The applications involving seismic are
Publicado em: 2005