Capillary Tubes
Mostrando 1-12 de 54 artigos, teses e dissertações.
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1. Comparison of methodologies for detecting Trypanosoma cruzi parasites by microscopic observation of microhematocrit capillary tubes
Abstract INTRODUCTION: The microscopic examination of microhematocrit tubes (mHCT) has been proposed as the gold standard for acute and congenital Chagas disease diagnosis. We compared different mHCT methodologies detecting T. cruzi parasites in the blood. METHODS: The rotating method, water mount, and immersion oil methods were compared for their suitab
Rev. Soc. Bras. Med. Trop.. Publicado em: 27/06/2019
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2. Immiscible liquid-liquid displacement in capillary tubes: viscoelastic effects
The displacement of a fluid by liquid injection occurs in some practical applications like oil recovery in porous media and cementation of drilling wells. The dimensionless numbers that govern this problem are the capillary number, Reynolds number and viscosity ratio. An overview of selected oil recovery processes shows that hydrolyzed polyacrilamide and bio
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2008-06
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3. Analysis on the delay of vaporization occurence for R-410A flow in adiabatic capillary tubes. / Análise da ocorrência do atraso de vaporização no escoamento do R-410A em tubos capilares adiabáticos.
Este trabalho apresenta os resultados de um estudo experimental sobre a ocorrência do atraso de vaporização no escoamento de misturas de fluidos refrigerantes em tubos capilares adiabáticos, com o intuito de aprimorar modelos de simulação do desempenho desse componente do ciclo de refrigeração previamente desenvolvidos. Foi realizada uma série de le
Publicado em: 2008
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4. Artificial feeding of partially engorged female tick Rhipicephalus (Boophilus) microplus (Canestrini, 1887) (Acari: Ixodidae) through capillary tubes / Alimentação artificial de fêmeas parcialmente ingurgitadas de Rhipicephalus (Boophilus) microplus (Canestrini, 1887) (Acari: Ixodidae) por meio de tubos capilares.
Alimentação artificial é uma ferramenta importante, por constituir opção para minimizar o uso de animais na experimentação científica propiciando estudo da transmissão de bioagentes na ausência do hospedeiro vertebrado. Os objetivos deste estudo foram alimentar artificialmente, por meio de tubos capilares, fêmeas parcialmente ingurgitadas do carra
Publicado em: 2008
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5. ESCOAMENTO DE LÍQUIDO PSEUDO-PLÁSTICO ATRAVÉS DE CAPILAR COM GARGANTA / FLOW OF PSEUDO-PLASTIC LIQUID THROUGH CAPILLARY TUBES WITH THROAT
Due to its application on a large number of fields and activities which are vital for the modern world, being oil prospection one of them, the flow of fluids on porous media have been studied in many experimental works and theoretical pieces. For instance, regarding the recovery of oil fields, it is challenging to predict the behavior of fluids that will be
Publicado em: 2007
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6. Phase equilibrium calculations for confined fluids, including surface tension prediction models
Phase equilibrium calculations for fluids confined inside capillary tubes or porous media are formulated using the isofugacity equations. In this situation, the phase pressures are not equal and it is assumed that they are related by the Laplace equation. With this formulation, existing procedures for phase equilibrium calculations can be readily modified to
Brazilian Journal of Chemical Engineering. Publicado em: 2005-03
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7. DISPLACEMENT OF VISCOELASTIC LIQUIDS IN CAPILLARY TUBES / DESLOCAMENTO DE LÍQUIDOS VISCOELÁSTICOS EM TUBOS CAPILARES
O deslocamento de um líquido em um tubo capilar pela injeção de um gás ocorre em muitas situações, tais como na recuperação avançada de petróleo, no revestimento de conversores catalíticos e na moldagem assistida por injeção de gás. Geralmente o líquido deslocado é uma solução polimérica ou uma dispersão, que é não Newtoniana. Forças v
Publicado em: 2005
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8. Analysis of HCFC 22 alternative refrigerant fluids flow through adiabatic capillary tubes. / Análise do escoamento de fluidos refrigerantes alternativos ao HCFC22 em tubos capilares adiabáticos.
Este trabalho apresenta os resultados da pesquisa "Análise do Escoamento de Fluidos Refrigerantes Alternativos ao HCFC 22 em Tubos Capilares Adiabáticos", desenvolvida para obtenção do título de Doutor em Engenharia no Departamento de Engenharia Mecânica da EPUSP. Essa pesquisa foi motivada pelas resoluções do Protocolo de Montreal, que prevêem a el
Publicado em: 2000
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9. Potencial cariogenico "in vitro" de estreptococos grupo mutans da cavidade bucal e seu significado em relação a carie dentaria
In order to analyze the cariogenic potential of some group mutans streptococci species, isolated and in association, by formation of "in vitro" bacterial plaque, production of extracellular polysaccharides and acid production capacity, strains of those microorganisms belonging to the microbial collection of Microbiology and Immunology Laboratory, Dental Scho
Publicado em: 1998
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10. Projeto, construção e ensaio de um viscosimetro capilar
A capillary type rheometer which operates coupled to the universal testing machine INSTRON model 11303, was designed, built and tested. The rheometer has basically a reservoir that contain the testing material and a capillary tube through which the ma¬terial has to flow steadly at a constant rate and laminar regime in order to detect the pressure drop that
Publicado em: 1982
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11. Automated polymerase chain reaction in capillary tubes with hot air.
We describe a simple, compact, inexpensive thermal cycler that can be used for the polymerase chain reaction. Based on heat transfer with air to samples in sealed capillary tubes, the apparatus resembles a recirculating hair dryer. The temperature is regulated via thermocouple input to a programmable set-point process controller that provides proportional ou
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12. Rac Regulates Endothelial Morphogenesis and Capillary Assembly
Endothelial cells undergo branching morphogenesis to form capillary tubes. We have utilized an in vitro Matrigel overlay assay to analyze the role of the cytoskeleton and Rho GTPases during this process. The addition of matrix first induces changes in cell morphology characterized by the formation of dynamic cellular protrusions and the assembly of discrete
The American Society for Cell Biology.