Water Leak
Mostrando 1-12 de 34 artigos, teses e dissertações.
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1. Adjustable inspiratory occlusion valve in experimental bronchopleural fistula. A new therapeutic perspective
PURPOSE: To assess the efficacy of an adjustable inspiratory occlusion valve in experimental bronchopleural fistula during mechanical ventilation.METHODS:We studied six mechanically ventilated pigs in a surgically created, reproducible model of bronchopleural fistula managed with mechanical ventilation and water-sealed thoracic drainage. An adjustable inspir
Acta Cir. Bras.. Publicado em: 2015-08
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2. Experimental evaluation in dogs of importance of bowel preparation on colo-colonic anastomosis. / AvaliaÃÃo da anastomose colo-cÃlica com e sem preparo intestinal. Estudo experimental em cÃes
The objective of this study was to evaluate the efficacy of colo-colonic anastomosis in dogs with and without preoperative bowel preparation. The experiment included 42 healthy female mongrel dogs (Canis familiaris) weighing 8.4-16.9 Kg, supplied by the municipal dog pound of Teresina, PiauÃ. The animals were distributed at random in two groups of 21 animal
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/12/2012
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3. Detecção e localização de vazamentos em tubulações utilizando sistemas acústicos e redes neurais / Leak detection and location in pipelines through acoustic method and neural networks
Pipeline networks are complex systems of ducts used nowadays for gas and chemical products transporting through long distances. They frequently cross highly populated regions, water supplies or natural reserves. Even small leaks in pipelines can lead to great losses of products and serious damages to the environment before it could be detected. With the purp
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/02/2012
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4. Análise experimental de três métodos de aerostasia bronquial.
The pulmonary lobectomy technique can be used on the lung cancer, lung lobe torsion, pulmonary laceration and lung abscesses treatment and among the postoperative problems the bronchial stump dehiscence, prolonged air leak and development of bronchopleural fistula are highlighted. These problems are usually resulting from malocclusion of the bronchial stump
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/02/2012
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5. Extração de parâmetros característicos para detecção acústica de vazamento de água. / Feature extraction for acoustic water leak detection.
Este trabalho apresenta a pesquisa sobre a extração de parâmetros característicos de sinais acústicos para fins de detecção automática de vazamento de água em tubulações enterradas. Os sinais acústicos foram adquiridos com o auxílio de um geofone eletrônico e também catalogados por técnicos especialistas em detecção acústica. De todos os s
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/04/2011
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6. Avaliação da eficácia de modelos de simulação hidráulica na obtenção de informações para diagnóstico de perdas de água. / Evalueting the efectiveness of hydraulic simulation in obtaining information for water leak diagnosis.
Atualmente a avaliação das perdas de água, nos sistemas de distribuição, é feita com base em equações empíricas, que utilizam informações, agrupadas e totalizadas, de uma área. Isto torna necessária sua subdivisão em frações cada vez menores, na busca da fração mais crítica. Neste trabalho, é apresentada uma avaliação da eficácia do us
Publicado em: 2010
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7. Proposta de algoritmo para detecção de vazamentos em oleodutos utilizando análise freqüencial de sinais de pressão
Pipeline leak detection is a matter of great interest for companies who transport petroleum and its derivatives, in face of rising exigencies of environmental policies in industrialized and industrializing countries. However, existing technologies are not yet fully consolidated and many studies have been accomplished in order to achieve better levels of sens
Publicado em: 2009
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8. Avaliação de risco a saúde humana por exposição ambiental a hidrocarbonetos aromáticos monocíclicos : estudo de caso / Avaliação de risco a saúde humana por exposição ambiental a hidrocarbonetos aromáticos monocíclicos : estudo de caso
Soil and underground water contamination with hydrocarbon compounds can occur as a consequence of leak from the underground storage tanks in fuel service stations. The detection of these leaks normally does not occur immediately neither they are communicated to the responsible public authorities, which do not adequately check the conditions of the service st
Publicado em: 2009
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9. Estudo da circulação hidrodinâmica e da dispersão de óleo na zona costeira entre Macau e Galinhos RN
This paper presents a study on coastal hydrodynamics and the spread of an oil spill in waters off Macau and Galinhos, on the east coast of the state of Rio Grande do Norte in Northeast Brazil. This area has a very marked coastal dynamic owing to the complexity of its geomorphological features, developed in a regime of semidiurnal mesotides involving reefs, s
Publicado em: 2008
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10. Leak detection and calibration of transient hydraulic system models / Calibração e detecção de vazamentos em modelos de sistemas hidráulicos no escoamento transitório
The occurrence of large leakage losses in water supply systems has been frequently linked with pipe breaks resulting from high pressures levels in pipes. Efficient location of leakages is required in order to effectively control water losses and quickly repair the system. Analysis of hydraulic transients has been particularly useful for calibration and leak
Publicado em: 2007
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11. FLUX AND TRANSPORT STUDY OF PURE GASOLINE AND GASOLINE BLENDED ETHANOL IN UNSATURATED POROUS MEDIA / ESTUDO DO FLUXO E TRANSPORTE DE GASOLINA PURA E MISTURADA COM ETANOL EM MEIOS POROSOS NÃO SATURADOS
The subsurface release of water immiscible pollutants (NAPLs) due to leaks in storage tanks or pipelines and spilling transportation accidents is of great concern, since the NAPL or its constituents may migrate through the vadose zone until reaching the water table and eventually contaminate clean water sources. In Brazil, most of the gas stations store etha
Publicado em: 2007
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12. Análise das relações climato-hidrológicas e das demandas hídricas no alto curso da bacia hidrográfica do Rio Bagagem/MG
The rational searching for rational use of the hidric resources motivated this thesys whose objetctive was to know the climate-hidrologic processes that happen inside a hidrografic basin by the human interference in the environment. The understanding of those processes propitiated subsidies for the understanding of the space organization of the area, mainly
Publicado em: 2007