Pool Boiling
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Resfriamento de chips eletrônicos através de sistema bifásico utilizando fluído R-134A / Two-phase cooling system for electronic chips based on R-134a fluid
Neste trabalho, é calculado e construído um protótipo de um sistema bifásico fechado para resfriamento de chips eletrônicos baseado em um termosifão. O funcionamento do sistema é baseado na transferência de calor através da ebulição nucleada e da condensação em vasos, o projeto do protótipo é guiado pelos resultados obtidos nos cálculos. O pr
Publicado em: 2010
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2. Experimental and theoretical study of pool boiling heat transfer to amine solutions
In this investigation, a large number of experiments have been performed to measure the nucleate boiling heat transfer coefficients of water/diethanolamine (DEA) and water/monoethanolamine (MEA) binary solutions. Based on these experimental data, effects of physical properties such as surface tension and viscosity of mixtures on nucleate boiling heat transfe
Brazilian Journal of Chemical Engineering. Publicado em: 2009-03
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3. Experiments on the fundamental mechanisms of boiling heat transfer
The lecture presents a survey of results found by the author and his team during recent years. An experimental technique for precise and systematic measurements of entire boiling curves under steady-state and transient conditions has been developed. Pool boiling experiments for well wettingfluids and fluids with a larger contact angle (FC-72, isopropanol, wa
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2005-03
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4. Evaluation of the rohsenow correlation through experimental pool boiling of halocarbon refrigerants on cylindrical surfaces
This paper reports results from an investigation on the performance of the Rohsenow's type of correlation when applied to the nucleate boiling of halocarbon refrigerants over cylindrical surfaces of different material. Experimental data for refrigerants R-11, R-123, R-12, and R-134a have been raised and fitted according to two different procedures. It has be
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2004-06
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5. Microbial Composition of Near-Boiling Silica-Depositing Thermal Springs throughout Yellowstone National Park
The extent of hyperthermophilic microbial diversity associated with siliceous sinter (geyserite) was characterized in seven near-boiling silica-depositing springs throughout Yellowstone National Park using environmental PCR amplification of small-subunit rRNA genes (SSU rDNA), large-subunit rDNA, and the internal transcribed spacer (ITS). We found that Therm
American Society for Microbiology.
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6. Multiple DNA repair activities for 3'-deoxyribose fragments in Escherichia coli.
Escherichia coli contains multiple enzymes that hydrolyze deoxyribose fragments (phosphoglycolaldehyde, PGA) from the 3' termini of a synthetic DNA substrate. The major such activities are the main bacterial apurinic endonucleases, exonuclease III and endonuclease IV. In a double mutant deficient in both of these oxidation repair enzymes, Mg++-dependent 3'-P
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7. Isolation of a large cholecystokinin precursor from canine brain.
Cholecystokinin (CCK)-like immunoreactivity (CCK-LI) in a pool of 12 dog brains was extracted sequentially into boiling water and cold 2% trifluoroacetic acid. Gel filtration on Sephadex G-50 revealed three main molecular forms detected by a carboxyl-terminal antibody; one was eluted in the position of CCK-58 (58 amino acid residues long); a second, in the p
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8. Enhancement of Bacteroides intermedius growth by Fusobacterium necrophorum.
Previous work from this laboratory has demonstrated the persistence of Bacteroides intermedius in the livers of mice receiving an intraperitoneal inoculum of B. intermedius and Fusobacterium necrophorum. This study was undertaken to determine whether F. necrophorum enhanced the in vitro growth of B. intermedius. Tryptose phosphate broth did not support the g
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9. Treponema denticola Outer Membrane Inhibits Calcium Flux in Gingival Fibroblasts
Treponema denticola is a cultivable oral spirochete which perturbs the cytoskeleton in cultured cells of oral origin, but intracellular signalling pathways by which it affects actin assembly are largely unknown. As the outer membrane (OM) of Treponema denticola disrupts actin-dependent processes that normally require precise control of intracellular calcium,
American Society for Microbiology.