Urban Rivers
Mostrando 13-24 de 84 artigos, teses e dissertações.
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13. Diversity and conservation status of Aegla spp. (Anomura, Aeglidae): an update
Abstract The speciose genus Aegla Leach, 1820 is the only valid extant genus of the anomuran family Aeglidae, bearing 83 known species. This diversity may be even greater since there is some evidence for cryptic speciation. The genus is endemic to southern South America, occurring in freshwater habitats. We assessed the conservation status of 82 species of A
Nauplius. Publicado em: 27/04/2017
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14. Verificação da solução das equações de Saint-Venant com base no método difusivo de lax para propagação de vazões em canais naturais
ABSTRACT Hydrodynamic models, based on the Saint-Venant equations, represent the transient flow in water systems, and simulate flow routing over time and space. Several numerical solutions have been applied to these expressions, but often differences are found in results among distinct procedures, considering that all numerical approaches have limitations. N
RBRH. Publicado em: 20/02/2017
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15. Comparative metagenome of a stream impacted by the urbanization phenomenon
Abstract Rivers and streams are important reservoirs of freshwater for human consumption. These ecosystems are threatened by increasing urbanization, because raw sewage discharged into them alters their nutrient content and may affect the composition of their microbial community. In the present study, we investigate the taxonomic and functional profile of th
Braz. J. Microbiol.. Publicado em: 2016-12
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16. Rhinosporidiosis: the largest case series in Brazil
Abstract: INTRODUCTION: Rhinosporidiosis is a chronic infection of the mucous membrane and is caused by Rhinosporidium seeberi, an aquatic mesomycetozoan. The mode of infection is probably transepithelial penetration. The large number of rivers and lakes and the strong presence of riparian populations in the State of Maranhão are strong predisposing factor
Rev. Soc. Bras. Med. Trop.. Publicado em: 2016-08
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17. Determination of CO2, CH4 and N2O: a Case Study for the City of Rio de Janeiro Using a New Sampling Method
A new sampling method using polypropylene syringes and chemical analysis by gas chromatography was proposed and applied to determine CO2, CH4 and N2O. The samples' stability was evaluated and compared with the stability of the samples in stainless steel canisters and Tedlar® bags. This methodology was applied to a case study in the urban area of the city of
J. Braz. Chem. Soc.. Publicado em: 2016-04
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18. CONTAMINAÇÃO DE AMBIENTES AQUÁTICOS POR "AGROTÓXICOS URBANOS”: O CASO DOS RIOS COCÓ E CEARÁ, FORTALEZA – CEARÁ, BRASIL
Pesticides are used mostly in rural areas for agriculture, but urban pest control, public health campaigns, and household and veterinary products can also be important sources of these contaminants. This aim of this study was to estimate household pesticide contamination in sediments of two urban estuaries due to pest control: Cocó and Ceará rivers loca
Quím. Nova. Publicado em: 2015-06
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19. Copper(II) and nickel (II) complexation capacity of dissolved organic matter from rivers of agricultural and urban areas in the state of São Paulo
Este estudo teve como principal objetivo determinar a capacidade de complexação da Matéria Orgânica (MO) de regiões tipicamente agrícolas e urbanas, com os íons de cobre e níquel. As amostras foram coletadas durante as estações de seca e chuva e submetidas ao estudo da capacidade de complexação e da constante de estabilidade condicional da MO com
J. Braz. Chem. Soc.. Publicado em: 2013-11
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20. Determinação de hormônios estrógenos e progestágenos em amostras ambientais por GC-MS
Due to the constant increase in population, the level of pollution on the planet has grown mainly in aquatic environments. Some of these contaminants present regulation but a fraction of these, called "emerging", besides being continuously released into the environment without any control, have no regulation. Sex hormones are part of these emerging contamina
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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21. Análise da qualidade da água no Rio Catu da bacia hidrográfica do Rio Pojuca Bahia
In Brazil, human activities such as dumping of sewage, deforestation of riparian vegetation and inappropriate use of pesticides, have caused damage to the environment and water quality of rivers, especially when these rivers cut the large urban centers. The launch of fresh domestic sewage and industrial effluents are among the activities that negatively impa
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/12/2011
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22. The basin Imboassu in São Gonçalo (RJ) unit as enabler of environmental education in the context of planning and land management / A bacia do Rio Imboassu, no município de São Gonçalo (RJ) como unidade viabilizadora da educação ambiental no contexto do planejamento e gestão ambiental
Environmental problems are increasingly common and varying magnitudes and scales, affecting mainly the urban areas. Air pollution and water bodies, landslidesand floods are some of these adverse situations. São Gonçalo is no exception. Located in the Metropolitan Region of Rio de Janeiro, the city has exemplified with situations, especially in relation to
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/09/2011
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23. âAplicaÃÃo da Teoria Fuzzy em um Modelo Bidimensional de Transporte de Massa, para Estudar o Risco Fuzzy em Rios Urbanos, Sujeitos a LanÃamentos de Agentes Poluentesâ. / Application of Fuzzy Theory in Two-Dimensional Mass Transport Model to study the Fuzzy Risk in Urban Rivers, Subject to Release of pollutants
A modelagem matemÃtica tem se tornado uma importante ferramenta para quantificar a qualidade de Ãgua nos mais diversos sistemas hÃdricos. Estas formulaÃÃes se tornaram mais frequentes a partir dos anos 60 com os avanÃos dos mÃtodos numÃricos e dos computadores digitais. Atualmente, como os problemas de qualidade de Ãgua se tornaram mais crÃticos, a
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/07/2011
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24. Contiguous urban rivers should not be necessarily submitted to the same management plan: the case of Tietê and Pinheiros Rivers (São Paulo-Brazil)
O gerenciamento dos recursos hídricos urbanos desempenha um papel importante para os países em desenvolvimento. Os rios Tietê e Pinheiros (São Paulo, Brasil) são afetados por efluentes domésticos e industriais e pela poluição difusa. Esta pesquisa teve como objetivo quantificar 134 variáveis da água dos rios Tietê e Pinheiros (aproximadamente 7.20
Anais da Academia Brasileira de Ciências. Publicado em: 2011-12