Urban River
Mostrando 25-36 de 232 artigos, teses e dissertações.
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25. Butterflies (Lepidoptera: Papilionoidea) of an urban park in northeastern Brazil
Resumo Apesar de ser um dos grupos mais bem estudados no Brasil, as borboletas da região Nordeste, especialmente ao norte da foz do Rio São Francisco, são ainda pouco conhecidas. O objetivo deste estudo foi realizar um inventário da fauna de borboletas em um fragmento de Floresta Atlântica no estado de Pernambuco, como uma contribuição para compreens�
Biota Neotrop.. Publicado em: 10/01/2019
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26. Using the pollutant load concept to assess water quality in an urban river: the case of Carahá River (Lages, Brazil)
Resumo O objetivo deste trabalho foi avaliar a qualidade da água do Rio Carahá no município de Lages (Brasil), utilizando o conceito de carga de poluentes e comparar a representação dos resultados com aquela expressa por meio do índice de qualidade da água. Para este estudo foram selecionados 13 pontos ao longo da calha do rio e realizadas 8 coletas d
Rev. Ambient. Água. Publicado em: 07/01/2019
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27. Memória do trabalho e memória ambiental: as indústrias de curtume do Vale do Rio dos Sinos/RS
Resumo O artigo apresenta uma discussão sobre paisagem urbana, memória do trabalho e memória ambiental no Vale do Rio dos Sinos - RS, Brasil, por meio de uma coleção de texto e imagem organizada em torno das trajetórias sociais de sujeitos que estiveram ou ainda estão vinculados à indústria do couro na região. Este material compõe o acervo de cole
Rev. Bras. Estud. Urbanos Reg.. Publicado em: 01/01/2019
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28. Tecnologia Blockchain: inovação em Pagamentos por Serviços Ambientais
RESUMO Os problemas socioecológicos são complexos e multidimensionais, envolvendo pelo menos a dimensão ambiental, social, econômica, política e institucional. Os problemas relacionados ao uso múltiplo dos recursos hídricos, a revitalização de bacias hidrográficas e a recuperação de rios urbanos têm colocado novos desafios para a sociedade, os q
Estud. av.. Publicado em: 2019-01
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29. Ecotoxicology assay for the evaluation of environmental water quality in a tropical urban estuary
Abstract Most studies evaluating the impacts of river pollution in the semi-arid region of Brazil have been geared towards physiochemical analyses, and investigations of the adverse effects of water pollution on associated organisms are scarce. This study aimed to evaluate the water quality in the Poxim river estuary in Aracaju, Sergipe throughout the dry an
An. Acad. Bras. Ciênc.. Publicado em: 17/12/2018
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30. Low occurrence of Hepatitis A virus in water samples from an urban area of Southern Brazil
ABSTRACT Hepatitis A virus (HAV), a member of Picornaviridae family, is the main causative agent of acute viral hepatitis in the world, mainly in developing countries. HAV may be present in contaminated water and food and its presence is often associated to a lesser extent with socioeconomic factors and environmental quality. The main goals in the present st
Rev. Inst. Med. trop. S. Paulo. Publicado em: 08/11/2018
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31. Aquel lejano Oeste: paradojas de la (in)movilidad en la ciudad de Santa Fe
Abstract The uneven and fragmented growth of the western edge of the city of Santa Fe, in Argentina, can be analysed in terms of the mobility and immobility experienced there. A paradox materialized in the design of the belt highway as a space destined to high speeds and, at the same time, as a limit and a barrier to socio-spatial exchange. With the aim of r
Cad. Metrop.. Publicado em: 2018-04
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32. IMPLICATIONS FOR PEAK FLOWS OF THE MARRECAS RIVER BASIN DUE TO CHANGES IN THE BRAZILIAN FOREST CODE
ABSTRACT Changes in the Brazilian Forest Code (BFC) have soften the criteria for recovery and conservation of permanent preservation areas (PPAs), enhancing processes related to surface runoff. The aim of this study is to understand the effects of changes in PPA classification criteria established by BFC of 2012 to the detriment of BFC from 1965 considering
Eng. Agríc.. Publicado em: 2018-04
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33. Analytical Strategies for Determination and Environmental Impact Assessment of Inorganic Antimony Species in Natural Waters Using Hydride Generation Atomic Fluorescence Spectrometry (HG AFS)
This study proposes an optimized procedure for the determination of inorganic antimony species in natural waters using hydride generation atomic fluorescence spectrometry (HG AFS) and continuous flow system. The variables of the hydride generation system, such as pre-reduction time, hydrochloric acid concentration and sodium tetrahydroborate concentration, w
J. Braz. Chem. Soc.. Publicado em: 2018-01
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34. Rapid Assessment of Habitat Diversity Along the Araras Stream, Brazil
ABSTRACT Agriculture, urbanization, and industrialization are some of the anthropogenic activities that constantly generate negative impacts on natural environments. Part of this degradation directly affects aquatic systems. This study aimed to evaluate the visual characteristics of the Araras Stream, located in the municipality of Araras, São Paulo state,
Floresta Ambient.. Publicado em: 30/11/2017
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35. 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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36. Multivariate Optimization of a Simultaneous Cloud Point Extraction Procedure of Cd, Cu and Ni from Sediments Samples and Determination by ICP OES
A simultaneous preconcentration method for cadmium, copper and nickel in samples of sediments and determination by inductively coupled plasma optical emission spectrometry was developed. The method is based on the extraction of the metals as complexes formed with 2-(5-bromo-2-pyridylazo)-5-(diethylamino)-phenol (5-Br-PADAP) at cloud point of the nonionic sur
J. Braz. Chem. Soc.. Publicado em: 2016-04