Superficial Discharges
Mostrando 1-12 de 18 artigos, teses e dissertações.
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1. Nitretação por descargas elétricas da liga Ti-6Al-4V com adição de pó abrasivo SiC ao fluido dielétrico
RESUMO O processo de nitretação que usa Usinagem por Descargas Elétricas é um método que associa a capacidade de usinar superfícies complexas com a obtenção de tratamento termoquímico de nitretação. A fonte de nitrogênio é proveniente da uréia, que compõe o fluido dielétrico juntamente com água deionizada. A liga de titânio Ti-6Al-4V possui
Matéria (Rio J.). Publicado em: 16/09/2019
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2. Distribuição de Zn, Pb, Ni, Cu, Mn e Fe nas frações do sedimento superficial do Rio Cachoeira na região sul da Bahia, Brasil
The metal distribution in the surface sediment fractions of the Cachoeira River was evaluated based on the fractionation method using a five-step sequential extraction. The determination of metals was made by flame atomic absorption spectrophotometry (F AAS). Zn, Pb and Cu exhibit higher concentrations in the residual fraction of the sediment from sites that
Quím. Nova. Publicado em: 2013
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3. Uso e ocupaÃÃo do solo e escoamento superficial na Bacia HidrogrÃfica do Rio Cascavel
The Brazilian municipality presented significant urbanization process, what caused the expansion of urban areas, and consequently increased the impermeable areas. The measure that the city is urbanized increases the peak discharge resultants of the water runoff, what can provoke problems as floods of closeness areas to the drainage channels. Know the influen
Publicado em: 2009
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4. Efeito da cobertura do solo e de práticas de controle de erosão nas perdas de água e solo por escoamento superficial / Ground covering and practical erosion control effects in the water and soil losses by run-off
The main pollutants of water resources from agricultural areas are organic matter, sediments, nutrients and pesticides, carried out mainly by runoff from farming lands. Considering this fact, it is very important the development and application of technologies to reduce such undesirable residues discharges, that were analyzed in this study. The experiment wa
Publicado em: 2009
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5. Características clínicas e epidemiológicas dos agravos por causas externas entre menores de 19 anos em serviço de atendimento de urgência de Barbacena.
Objective: To identify the rate of injuries due to external causes among individuals: children and adolescents, under19 years old. They were assisted by a reference hospital- Santa Casa Hospital in Barbacena- Minas Gerais, Brazil/2006. Methods: Transversal study. The datamorbility were collected from forms of individuals- victims- of external causes. Results
Publicado em: 2008
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6. Application of neural networks for diagnosis of pollution in insulators of hight tension / AplicaÃÃo de redes neurais para diagnÃstico de poluiÃÃo em isoladores de alta tensÃo
Este trabalho se propÃe a apresentar uma metodologia para classicar o nÃvel de poluiÃÃo presente na superfÃcie dos isoladores aÃreos de alta tensÃo, ou seja, diagnosticar o estado do isolamento do sistema elÃtrico de transmissÃo atravÃs da tÃcnica de reconhecimento de padrÃes dos sinais de ultra-som emitidos por descargas superciais nos isoladore
Publicado em: 2008
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7. Identificação da influência do descarte de lodo de estações de tratamento de água
The growing concern of environmental surveillance of the quality of hydric resources guides the development of research on management of residues generated in water treatment plants (WTP). Approximately 8.000 WTPs in Brazil operate without a treatment program of the residues, disposing these effluents in the environment. This work evaluated WTP discharges in
Química Nova. Publicado em: 2007-08
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8. Avaliação de custos decorrentes de descargas atmosféricas em sistemas de distribuição de energia / Evaluation of the costs arising from atmospheric discharges in power distribution systems.
As descargas atmosféricas sempre foram tratadas como acontecimentos fortuitos e de força maior, inerentes à vontade do homem. Contudo, mudanças significativas a esse respeito ocorreram recentemente na legislação brasileira, no Código Civil e na norma ABNT NBR 5410: 2004 (Instalações Elétricas de Baixa Tensão). Além disso, em 29 de abril de 2004 f
Publicado em: 2007
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9. The dynamics of groundwaters in the estuary of the River Itanhaem, the south coast of the State of São Paulo / A dinamica das aguas subterraneas no estuario do Rio Itanhaem, litoral sul do Estado de São Paulo
The present work studied the influence of the tide in the coastal aquifers by identifying hydrodynamic and chemical alterations in the aquifiers. The research was carried out in the Itanhaém river estuary in two localities: in the Sitio de Pesquisa with 7 installed wells situated on the banks of the Acima river, 3,5 km from the ocean, and in the CePeRio - C
Publicado em: 2006
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10. NUTRIENTES NA ÁGUA DO ESCOAMENTO SUPERFICIAL EM SISTEMA PLANTIO DIRETO COM MULCHING VERTICAL / NUTRIENTS ON THE WATER FROM RUNOFF IN NO TILLAGE SYSTEM WITH VERTICAL MULCHING
The main pollutants of water resources from agricultural areas are organic matter, sediments, nutrients and pesticides, carried out mainly by runoff from farming lands. Considering this fact, it is very important the development and application of new technologies to reduce such undesirable residues discharges, specifically some nutrients, as nitrogen, phosp
Publicado em: 2004
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11. Presubicular and parasubicular cortical neurons of the rat: functional separation of deep and superficial neurons in vitro.
1. The presubiculum and parasubiculum are retrohippocampal structures bordered by the subiculum and medial entorhinal cortex. Deep layer (IV-VI) neurons from this region exhibit stable synaptically triggered burst behaviour which distinguishes them from superficial layer (I-III) cells. This functional separation was examined with intracellular and field pote
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12. Palmaris brevis spasm syndrome.
Palmaris brevis spasm syndrome is a rare and benign condition of localised muscular hyperactivity. In five men, the hypothenar eminence underwent spontaneous, irregular, tonic contractions of the palmaris brevis muscle. An EMG showed spontaneous high frequency discharges of normal motor units, without evidence of neuropathy or of nerve compression. This synd