16 resultados para Mossoro(RN)

em Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho"


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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Este trabalho trata das cidades médias, em particular das cidades de Marília, São José do Rio Preto, Londrina e Mossoró. Dentro desse estudo, o enfoque se dá para a compreensão e análise sobre o modo como estão combinados os espaços não edificados e os vazios urbanos, os espaços construídos e as vias de circulação e suas transformações ao longo do tempo. A proposta é analisar o processo de expansão do tecido urbano dessas cidades para compreender sua morfologia, bem como procurar fazer uma reconstituição, tomandose a dimensão espacial e temporal, com o intuito de que esta contribua na conferência das identidades próprias de cada cidade, viabilizando a identificação das semelhanças entre elas, como também de suas especificidades. Durante o desenvolvimento do trabalho procuramos identificar elementos promotores da reestruturação urbana pela qual as cidades têm passado nas ultimas décadas, tentando relaciona-los com as novas formas de produção e organização espaciais... (Resumo completo, clicar acesso eletrônico abaixo)

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Groundwater samples were analysed for Rn-222, Ra-226, and Ra-228 in Guarani aquifer spreading around I million kin 2 within four countries in South America, and it was found that their activity concentrations are lognormally distributed. Population-weighted average activity concentration for these radionuclides allowed to estimate a value: either slightly higher (0.13 mSv/year) than 0.1 mSv for the total effective dose or two times higher (0.21 mSv/year) than this limit, depending on the choice of the dose conversion factor. Such calculation adds useful information for the appropriate management of this transboundary aquifer that is socially and economically very important to about 15 million inhabitants living in Brazil, Argentina, Uruguay and Paraguay. (C) 2004 Elsevier Ltd. All rights reserved.

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Laboratory time-scale experiments were conducted on Carboniferous Limestone gravels from the Mendip Hills area, England, with the purpose of evaluating the release of Rn-222 to the water phase. The specific surface areas of the samples were 4.14 and 1.69 cm g(-1), which provided, respectively, values of 50.6 and 12.7 pCi for the released Rn. These results allowed the calculation of the emanation coefficient of this rock matrix with respect to the release of Rn, where completely different values corresponding to 23% and 6% were found, suggesting that the extent to which grain boundaries or imperfections in aggregates of micro-crystals of calcite intersect the particle surface certainly affects the Rn release. They also permitted the evaluation of models for the generation of Rn in rocks and transfer to water, in order to interpret the radioactivity due to this gas in groundwaters from the karstic aquifer of the Mendip Hills area, where the calculated activities in groundwater based on the values of 23% and 6% for the emanation coefficient were about 51 and 15 times higher than actually measured in groundwater. Therefore, the emanation coefficient in nature is considerably smaller than in the lab experiment, and another factor k (0 < k < 1) may be introduced into the equations related to the modelling, with the aim of adjusting the theoretical-practical results. (C) 1997 Elsevier B.V. Ltd. All rights reserved.

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In this study, a given quasilinear problem is solved using variational methods. In particular, the existence of nontrivial solutions for GP is examined using minimax methods. The main theorem on the existence of a nontrivial solution for GP is detailed.

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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

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This study focuses on the presence of radon (Rn-222) and volatile organic compounds (VOCs) in soil gases at a gas station located in the city of Rio Claro, Sao Paulo, Brazil, where a fossil fuel leak occurred. The spatial distribution results show a correlation between Rn-222 and VOCs, consistent with the fact that radon gas has a greater chemical affinity with organic phases than with water. This finding demonstrates that the presence of a residual hydrocarbon phase in an aquifer can retain radon, leading to a reduced radon content in the soil gas. The data in this study confirm the results of previous investigations, in which the method used in this study provided a preliminary fingerprint of a contaminated area. Furthermore, the data analysis time is brief, and only simple equipment is required. (C) 2014 Published by Elsevier Ltd.

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

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This presente monograph propose the analysis and discussion of the production of urban space and the processes of their structuring intraurbana from the dynamics of the real estate market into three Medium-sized Cities, Campina Grande - PB, Mossoró - RN and Passo Fundo - RS, whereas the various agents producing this space, in a comparative perspective. From this urban dynamic search to analyze the processes and relations present in these spaces, which are important for its production. From the compilation of real estate advertisements in local newspapers, are analyzed offerings of urban land, houses and apartments in each one of these cities by highlighting their locations and differentiated prices. Thus, working with data from real estate ads from the period 1995 - 2010 and a comparative perspective of the characteristics of real estate markets of three medium-sized cities, it tried to apprehend processes that are common between them and other individuals, to each one. Therefore the comparative analysis developed in this monograph sought to verify whether there are similarities between the cities in relation to the trends of concentration/spatial dispersion of bids and movements throughout time, in addition to a further intensification of the activities of real estate agents in face of such trends and offerings. In addition, we sought to remove a set of problematization that allow them to understand with more acute, in this set of medium cities of Brazilian urban network, processes of change that is already being discussed in the recent period by ReCiMe.

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O sistema estuarino do Rio Curimataú, uma planície lamosa amplamente coberta por vegetação de mangue e relativamente pouco impactada, foi estudado quanto à distribuição espacial da microfauna de foraminíferos e suas condicionantes. Vinte e cinco gêneros e quarenta espécies foram identificadas a partir dos sedimentos superficiais, considerando-se os indivíduos vivos e mortos presentes em 10 pontos ao longo do estuário, dos quais se extraíram ao menos 100 espécimes por amostra. O sistema pôde ser compartimentado em quatro sub-ambientes halínicos (hiperhalino, mesohalino, polihalino e euhalino), correspondentes, respectivamente, a quatro ecofácies de foraminíferos designadas de Ammotium spp., Miliammina fusca, Arenoparrella mexicana e Ammonia spp. Cada um destes segmentos ambientais foi caracterizado segundo os padrões de riqueza, diversidade e equitatividade das espécies. Os resultados deste estudo poderão servir para comparações a serem feitas com outros estuários tropicais modernos (impactados antropicamente ou não) e antigos. Tem aplicação, portanto, no setor de petróleo e gás, sendo de interesse às atividades de gestão ambiental de áreas litorâneas e de investigação da história geológica das bacias sedimentares