Jackets
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. Efeito do Ar Incorporado em Argamassas de Revestimentos / Effect of Air Incorporated in Mortars Jackets
O presente t rabalho aborda a ação da incorporação de ar em argamassas de revest imentos, produzidas em laboratór io, e seus efei tos em revest imentos apl icados sobre substratos porosos (bloco cerâmico, bloco de concreto, super fície de concreto). Trata -se de um estudo experimental , onde se aval ia os efei tos dos adi t ivos incorporadores de ar e
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/10/2010
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2. Estudo de manifestações patológicas em revestimentos de fachada em Brasília : sistematização da incidência de casos / Study of pathological manifestations in façade coating in brasília : systematization of cases occurrences
Atualmente a indústria da construção civil, nos cenários nacional e internacional, tem sido marcada pelo uso de novos materiais e desenvolvimento de tecnologias construtivas pouco abordadas cientificamente. No que se refere ao sistema de revestimento de fachada, apesar desta evolução tecnológica em curso, é crescente a incidência de manifestações
Publicado em: 2010
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3. Efeito do Ar Incorporado em Argamassas de Revestimentos / Effect of Air Incorporated in Mortars Jackets
O presente t rabalho aborda a ação da incorporação de ar em argamassas de revest imentos, produzidas em laboratór io, e seus efei tos em revest imentos apl icados sobre substratos porosos (bloco cerâmico, bloco de concreto, super fície de concreto). Trata -se de um estudo experimental , onde se aval ia os efei tos dos adi t ivos incorporadores de ar e
Publicado em: 2010
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4. MODELING OF THE USE OF NANOFLUIDS IN INTERNAL COMBUSTION ENGINES COOLING SYSTEMS / MODELAGEM DO USO DE NANOFLUIDOS NO SISTEMA DE ARREFECIMENTO DE MOTORES A COMBUSTÃO INTERNA
The application of nanofluids in cooling systems of internal combustion engines was studied. Nanofluids consist of nanoparticles (with dimension below 100 (u)m) suspended in traditional heat transfer fluids, such as water or ethylene glycol. Given their favourable heat transfer characteristics, because of the suspension of high thermal conductivity particles
Publicado em: 2009
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5. Desenvolvimento de processo contínuo de copolimerização em emulsão em reator tubular. / Development of a continuous emulsion copolymerization process in a tubular reactor.
Industrial emulsion polymerization processes are usually performed in batch or semi-batch stirred tanks, or in continuous stirred tank reactors (CSTR). Continuous reactors have the advantage of being smaller and providing a better product quality control by the reduction of the batch-to-batch variations. In addition, periodical self-sustained oscillations in
Publicado em: 2008
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6. Influência da forma de seção transversal no confinamento de pilares de concreto armado encamisados com PRFC (polímero reforçado com fibras) / Influence of the cross section shape in the confinement of jacketed reinforced concrete columns with CFRP (carbon fiber reinforced polymer)
The effect of the concrete confinement in columns submitted to the axial compression brings many benefits to its structural behavior, amongst them the increase of the axial compressive strength due to the action of the lateral pressures and the improvement of the ductility. In function of these advantages, the confinement is one of the main techniques for st
Publicado em: 2005
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7. Improving heat transfer in stirred tanks cooled by helical coils
Stirred Tank Reactors are extensively used in chemical industries. When they are used for highly exothermic reactions, jackets or coils are employed for heat removal. Internal coils can be either helical or axial and they considerably affect the flow inside the reactor because they impose an additional resistance to flow circulation. The aim of this work is
Brazilian Journal of Chemical Engineering. Publicado em: 2003-06
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8. Immediate and time-dependant behavior of RC columns strengthened by high-performance concrete jackets / Comportamento resistente imediato e ao longo do tempo de pilares reforçados por meio de encamisamento com concreto de alto desempenho
The thesis presents an experimental investigation on the behavior of RC columns strengthened by high-performance concrete jackets. The main objectives are to analyze the immediate and time-dependant behavior of the elements and the preloading effect in its load capacity and deformability. Twenty columns were tested varying the transversal section shape (circ
Publicado em: 2003
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9. The Testing of Life-jackets
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10. Heat-protective Ventilated Jackets: A Comparison of Humid and Dry Ventilating Air
A comparison has been made between humid and dry air for ventilating a heat-protective jacket. At sensible cooling capacities of 4·5 kcal./min. and above, humid and dry air provided equal protection. At sensible cooling capacities of 4 kcal./min. and above, the subject achieved thermal equilibrium within 65 min. with both humid and dry air, but below this v
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11. Physiological reactions of men using microclimate cooling in hot humid environments
van Rensburg, A. J., Mitchell, D., van der Walt, W. H., and Strydom, N. B. (1972).Brit. J. industr. Med.,29, 387-393. Physiological reactions of men using microclimate cooling in hot humid environments. This paper describes the laboratory testing of a water-cooled vest and of a pre-frozen jacket on men working in hot humid environments. The work rate used in