Air Stripping
Mostrando 13-20 de 20 artigos, teses e dissertações.
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13. Lixiviado de aterros sanitários brasileiros: estudo de remoção do nitrogênio amoniacal por processo de arraste com ar ("stripping") / Sanitary landfill leachate in Brazil: evaluation of ammonia nitrogen removal by air stripping process
Sanitary landfills are considered as the most appropriate way for final disposal of municipal solid wastes in Brazil, in the technical and economical point of view. Open dumps have been progressively substituted by well engineered and operated landfills. However, landfills still present environmental risks due to the gas emission and leachate production. Gas
Publicado em: 2009
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14. Measurement of conversion coeficients between air kerma and personal dose equivalent and backscatter factors for diagnostic x-ray beams / Determinação experimental dos coeficientes de conversão de Kerma no ar para o equivalente de dose pessoal, Hp(d), e fatores de retroespalhamento em feixes de raios-x diagnostico
Em proteção radiológica dois conjuntos de grandezas são importantes, as de proteção e as operacionais. Ambas podem ser relacionadas a partir de coeficientes de conversão com grandezas físicas básicas como o kerma. Para feixes de radiação utilizados em radiodiagnóstico nas qualidades da Comissão Internacional de Eletrotécnica (IEC), os coeficien
Publicado em: 2008
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15. Definição de alternativas de pré-tratamento de efluentes não domésticos em sistemas públicos de esgotos, utilizando o teste de avaliação da toxicidade refratária. / Definition of petreatment alternatives to non domestic effluent in public owned treatment works (POTWs), using the refractory toxicity assessment test (RTA).
Typically, the cause of effluent aquatic toxicity is unknown. Due to this and the complex makeup and varying toxicants in individual waste streams, a toxicity reduction program must usually begin at the discharge and proceed upstream to find the source. The key toxicant(s) and the actual toxic mechanism are normally not apparent from traditional characteriza
Publicado em: 2006
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16. Estudo comparativo entre o laser endovenoso e a fleboextração convencional da veia safena interna em pacientes com varizes primarias
The diagnosis of varicose veins is common, being found in up to 25% of women and 15% of the men. Such patients seek medical treatment for some reasons, also aesthetic concern. The development of more appropriate and flexible instruments, as well as thesearch for less invasive techniques with acceptable results, the short and long term period, made possible t
Publicado em: 2005
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17. Otimização de uma unidade de Air Stripping para remover BTEX de aguas residuarias
Com a busca constante pelo Desenvolvimento Sustentável, os órgãos ambientais estão demandando uma maior atenção à contaminação de recursos hídricos, provenientes de águas residuárias. As águas residuárias podem ser provenientes de descartes domésticos, industriais ou ainda pluviais. Os compostos químicos causam danos à saúde e ao equilíbri
Publicado em: 2004
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18. Projeto otimizado de uma unidade de air stripping para remover VOCs clorados de aguas residuarias
At present, it is more and more common to find water resources contaminated by substances resulting from anthropogenic activities, especially those originating from of the discards of industrial processes. These chemicals usually represent a threat to human health and to aquatic ecosystems equilibrium. The effects are still more harmful when such substances
Publicado em: 2002
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19. Transferencia de massa gas-liquido em leitos centrifugos
The development of high performance equipment is nowadays one of the most important preoccupations in chemical engineering research and design. The target is to devise techniques to obtain low dimension equipment and to intensify separation efficiency, generating compact and efficient plants. Gas-liquid contact systems as absorption and distillation, normall
Publicado em: 1999
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20. PATHWAYS FOR BIOSYNTHESIS OF A BACTERIAL CAPSULAR POLYSACCHARIDE IV. : Capsule Resynthesis by Decapsulated Resting-Cell Suspensions
Juni, Elliot (Emory University, Atlanta, Ga.), and Gloria A. Heym. Pathways for biosynthesis of a bacterial capsular polysaccharide. IV. Capsule resynthesis by decapsulated resting-cell suspensions. J. Bacteriol. 87:461–467. 1964.—Methods were devised for stripping capsules from encapsulated bacteria. By use of stripped resting-cell suspensions of a gram