Dam
Mostrando 13-24 de 766 artigos, teses e dissertações.
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13. Detection of seepage paths in small earth dams using the self-potential method (SP)
Abstract The application of geoelectric methods, such as induced polarization (IP), the electrical resistivity and the self-potential (SP), presents an important indirect study methodology in several areas of geology, such as mining, geotechnics and environmental geology. The present study deals with the results of the application of the self-potential metho
REM, Int. Eng. J.. Publicado em: 2020-09
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14. Seismic signature of mudflow tremor resulted from Brumadinho (Brazil) tailings dam failure
Abstract Mudflow is often associated with seismic activities. The present study applied a seismic based detection of the surface waves generated by the mudflow of Brumadinho dam collapse using records of Brazilian Seismographic Network. The signal envelope and time-frequency spectrograms of the mudflow signals were used in the analysis. As a result, the mudf
REM, Int. Eng. J.. Publicado em: 2020-09
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15. DETERMINATION OF THE PESTICIDES IN WATER USED IN THE CULTURE AND PROCESSING OF POTATOES
The contamination of water bodies by pesticide residues through direct flow, leaching and other methods has motivated the development of analytical methods for the determination of these compounds in water. A vortex-assisted liquid-liquid microextraction method followed by gas chromatography coupled to mass spectrometry for the determination of anilazine, li
Quím. Nova. Publicado em: 2020-09
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16. River damming affects seedling communities of a floodplain forest in the Central Amazon
ABSTRACT The flood pulse of black water rivers in the Amazon basin determines the composition of species along the flood gradient in igapó forests. The Balbina dam, built on the Uatumã River, has altered the flood pulse and caused changes in the floristic composition of adult trees throughout the downstream area. There is a lack of studies on how communiti
Acta Bot. Bras.. Publicado em: 2020-03
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17. THE LACK OF ECONOMIC ENVIRONMENTAL DAMAGE VALUATION - A CRITICAL REVIEW OF FUNDÃO DISASTER
ABSTRACT Critical events such as the disruption of the Fundão tailings dam, considered the biggest technological disaster in Brazil and the biggest of its category in the world, test the responsiveness of organizations in charge of protecting the environment. In the process of assign liability for damage, lawsuits initially proposed were replaced by settlem
CERNE. Publicado em: 2020-03
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18. DAMS SAFETY INDEX (DSI): A REASSESSMENT OF THE PARAMETERS OF ANALYSIS
ABSTRACT Dams provide a water supply, irrigation and power generation. However, the economic, social and environmental impacts are serious when they rupture. It is important that dams continue to function properly and are constantly evaluated for their safety and functionality. Contrary to general belief, small dams are the ones that present the most problem
Eng. Agríc.. Publicado em: 09/12/2019
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19. PREDIÇÃO DE CENÁRIO FUTURO UTILIZANDO AUTÔMATOS CELULARES E CADEIAS DE MARKOV EM ÁREA DE EXPANSÃO DA SILVICULTURA SOBRE O CERRADO BRASILEIRO
Resumo Os modelos preditivos para detecção de mudanças na paisagem tem sido utilizados como instrumento relevante de aporte ao planejamento e análise ambiental. Diversos modelos para simulação de cenários futuros coexistem na literatura, contudo o método que combina as Cadeias de Markov com os autômatos celulares tem demonstrado resultados excelente
Mercator (Fortaleza). Publicado em: 09/12/2019
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20. Upstream dam impacts on gilded catfish Brachyplatystoma rousseauxii (Siluriformes: Pimelodidae) in the Bolivian Amazon
ABSTRACT This paper explores the effects of two run-of-river dams (Jirau and Santo Antônio) built in cascade in the middle Madeira River (Brazil) on the interruption of long-distance migration routes of the gilded catfish (Brachyplatystoma rousseauxii). A participative monitoring system was set up to compare capture by commercial fishers approximately 1500
Neotrop. ichthyol.. Publicado em: 02/12/2019
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21. RIVERINE COMMUNITIES AND BELO MONTE POWER PLANT: DETERRITORIALIZATION AND INFLUENCE ON THE CULTIVATION OF EDIBLE PLANTS1
Resumo A pesquisa objetivou avaliar a importância das plantas alimentícias na manutenção do modo de vida dos ribeirinhos afetados pela Hidrelétrica Belo Monte, num cenário de mudanças socioambientais. Com 60 Unidades Familiares, realizaram-se entrevistas semiestruturadas, observações participantes, turnês guiadas e coletas botânicas. Os dados fora
Ambient. soc.. Publicado em: 02/12/2019
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22. THE PERCEPTION OF ADULT AND YOUNG ADULT STUDENTS ON THE RIVER RIO DOCE - CARTOGRAPHIES OF FEAR
Resumo O artigo se insere no conjunto de debates cuja preocupação são os efeitos do desastre sociotécnico provocado pelo rompimento da barragem de Fundão, ocorrido no ano de 2015, que afetou o rio Doce, e apresenta resultados de um estudo que buscou compreender as percepções de estudantes da Educação de Pessoas Jovens e Adultas (EJA) sobre o rio. O
Ambient. soc.. Publicado em: 02/12/2019
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23. Metals and dissolved organic carbon (DOC) of surface waters in two adjacent watersheds in the eastern Amazon
Resumo A intensificação do uso da terra na região da “Zona Bragantina”, uma área da Amazônia Oriental brasileira, acelerou as mudanças de paisagem da floresta primária para uma mistura de diferentes usos da terra: floresta (vegetação ripária), floresta secundária, pastagem, terra agrícola anual, terra cultivada perene, solo descoberto e veget
Rev. Ambient. Água. Publicado em: 28/11/2019
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24. SWISS CHEESE IN BRAZIL: DISASTER CULTURE AND SAFETY CULTURE IN DISASTERS
Resumo A presente contribuição aponta razões estruturais no Brasil relacionados à “cultura de desastre” e “cultura de segurança” e como esses aspectos influenciam a gestão dos desastres, especialmente aqueles do tipo de baixa incidência e alta consequência, que não dão indícios para a tomada de decisão preventiva. A discussão sobre a oco
Ambient. soc.. Publicado em: 25/11/2019