Magnetic Convection
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Extracellular diffusion quantified by magnetic resonance imaging during rat C6 glioma cell progression
Solution reflux and edema hamper the convection-enhanced delivery of the standard treatment for glioma. Therefore, a real-time magnetic resonance imaging (MRI) method was developed to monitor the dosing process, but a quantitative analysis of local diffusion and clearance parameters has not been assessed. The objective of this study was to compare diffusion
Braz J Med Biol Res. Publicado em: 03/07/2017
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2. DEVELOPMENT OF INSULATING MAGNETIC OIL FOR TRANSFORMERS
The Centrais Elétricas do Norte do Brasil AS – Eletronorte, as well as other companies in the world energy sector, have problems of loss of the performance by excessive heat and even accidents with their transformers. The maintenance and accidents impact of energy supply, generating profit and more expensive insurance premiums. The transformers are essent
Publicado em: 20/07/2014
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3. Mixed convection flow by a porous sheet with variable thermal conductivity and convective boundary condition
Effects of variable thermal conductivity on the mixed convection flow over a porous stretching surface are investigated. Analysis has been performed subject to the convective boundary conditions. The fluid is electrically conducting in the presence of a uniform applied magnetic field. The resulting problems are computed. The effects of emerging parameters on
Braz. J. Chem. Eng.. Publicado em: 2014-03
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4. Magnetic effect on free convection in a non-darcy porous medium saturated with doubly stratified power-law fluid
Natural convection heat and mass transfer along a vertical plate embedded in a doubly stratified power-law fluid saturated non-Darcy porous medium with uniform heat and mass flux is presented. The governing partial differential equations are transformed into ordinary differential equations using similarity transformations and then solved numerically. The eff
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2011-03
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5. Mecânica de suspensões magnéticas diluídas
This work concerns with an investigation of the dynamics of dilute suspensions composed by magnetic particles, considering microstructural and macroscopic aspects of this particulate systems. From the microstructure, it is known that magnetostatic attraction may lead to formation of aggregates in magnetic suspensions. In this way, numerical simulations have
Publicado em: 2009
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6. Great geomagnetic storms in the rise and maximum of solar cycle 23
Geomagnetic storms are intervals of time when a sufficiently intense and long-lasting interplanetary convection electric field leads, through a substantial injection of energy into the magnetosphere-ionosphere system, to an intensified ring current, strong enough to exceed some key threshold of the quantifying storm time Dst index. We have studied all the 9
Brazilian Journal of Physics. Publicado em: 2004-12
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7. Study of magnetic transient variations signature at Equatorial Region / Estudo da assinatura das variações magnéticas transientes na região Equatorial
Variações transientes na componente horizontal dos magnetogramas de altas latitudes são comuns. Elas estão associadas a processos de interação entre vento solar e o campo geomagnético. Mudanças abruptas no vento solar ao atingirem o campo geomagnético geram ondas nos modos Alfvén e rápido. As ondas no modo Alfvén não se propagam na direção per
Publicado em: 2003
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8. Crescimento unidirecional da liga CBr4/CLC16, um modelo de analise da solidificação de ligas euteticas
The importance of composite materials for high technology applications increased remarkably during the past decades. Directional solidification of eutectic alloys is a very efficient technique for production of these materials, yielding high thermal stability composites with interesting magnetic, optic and eletric properties. Because of a peculiar solute seg
Publicado em: 1993
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9. Gross Thermodynamics of Heat Engines in Deep Interior of Earth
From the gross conservation laws of thermodynamics in a convecting material we derive a bound on the ratio of the rate of production of mechanical or magnetic energy to the rate of internal radioactive heating which drives the convection. Our bound for this “efficiency” depends on the temperatures in the material, and can exceed unity. Whether the bound