Magnetic Fields
Mostrando 1-12 de 337 artigos, teses e dissertações.
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1. Possible Effects of Oriented Magnetic Fields on Human Blood Pressure
Abstract Background: There have been scattered reports indicating the possibility that applied magnetic fields can lower human blood viscosity, which has been considered as encouraging for decreasing blood pressure as a result of greater fluidity. Additional motivation comes from partial studies in animals showing some response of vascular variables to magn
International Journal of Cardiovascular Sciences. Publicado em: 2022
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2. Oriented Magnetic Fields and Blood Pressure
International Journal of Cardiovascular Sciences. Publicado em: 2022
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3. Electromagnetic Transients in Multiconductor Transmission Lines
Abstract The theory of multiconductor transmission lines is based on the principle of superposition. According to this principle, any electric or magnetic field can be represented as the sum of individual electric or magnetic fields. This theory is used to analyze and design electrical systems involving multiple conductors. In this work, the procedures for a
Journal of Microwaves, Optoelectronics and Electromagnetic Applications. Publicado em: 2022
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4. Efeitos do vento solar na magnetosfera terrestre: uma abordagem didática dos cinturões de Van Allen
Resumo Neste trabalho realizamos uma abordagem didática de aspectos relacionados ao geomagnetismo e como esses aspectos podem ser influenciados pela ação do vento solar. A carência de textos didáticos que promovam explicações em termos de conceitos de física básica foi a principal motivação para esse trabalho. Iniciamos com uma discussão históri
Rev. Bras. Ensino Fís.. Publicado em: 20/01/2020
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5. Comentário do Artigo “Sobre a Dinâmica de Partículas Carregadas em Campos Elétrico e Magnético Estáticos”
Resumo Neste trabalho ajustes são realizados em algumas equações do artigo “Sobre a Dinâmica de Partículas Carregadas em Campos Elétrico e Magnético Estáticos”, publicado nesta revista em 2017 [1]. Nossos cálculos mostram que (i) no caso particular 1, a trajetória circular da partícula carregada acontece em um quadrante diferente; (ii) no caso
Rev. Bras. Ensino Fís.. Publicado em: 22/08/2019
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6. The effect of very low dose pulsed magnetic waves on cochlea
Resumo Introdução: Os sistemas biológicos são geralmente expostos a forças de campo magnético em diferentes intensidades e frequências, direta ou indiretamente, na vida diária. Apesar dos resultados negativos, o uso terapêutico do campo magnético de baixa dose tem sido encontrado em estudos recentes. O efeito das forças do campo magnético sobre
Braz. j. otorhinolaryngol.. Publicado em: 10/07/2019
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7. Effect of freezing with oscillating magnetic fields on the physical and sensorial characteristics of mango (Mangifera indica L. cv. ‘Kent’)
Resumo O congelamento usando campos magnéticos oscilantes (OMF) foi desenvolvido e é comercializado para superar as desvantagens que normalmente ocorrem no congelamento convencional, que afeta a firmeza, a cor, o sabor e a perda por gotejamento em alimentos congelados e descongelados. A fim de verificar as vantagens acima mencionadas, avaliamos o efeito do
Braz. J. Food Technol.. Publicado em: 04/07/2019
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8. Ruido magnético Barkhausen para el estudio de la anisotropía magnética en aceros inoxidables
ABSTRACT The magnetic Barkhausen noise (MBN) is a phenomenon that occurs in ferromagnetic materials when they are exposed to slowly varying magnetic fields, generating discrete jumps in their magnetization. These jumps are produced by the movement of the magnetic domain walls. They can be detected by a small coil allocated on the sample surface. The movement
Matéria (Rio J.). Publicado em: 19/07/2018
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9. Desdoblamiento de la transformación martensítica en un acero F82H de activación neutrónica reducida
ABSTRACT One of the most promising solutions to global energy supply is nuclear fusion. This process, which is implemented in nuclear fusion reactors (from which one of the first designs was the Tokamak), involves deuterium-tritium plasmas at very high temperature, confined in vacuum chambers of toroidal shape under the influence of strong magnetic fields. T
Matéria (Rio J.). Publicado em: 19/07/2018
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10. Immobilization of the Magnetic Nanoparticles with Alkaline Protease Enzyme Produced by Enterococcus hirae and Pseudomonas aeruginosa Isolated from Dairy Effluents
ABSTRACT Protease is an enzyme which has a wide range of applications in various fields. Extracellular protease was produced from Pseudomonas aeruginosa and Enterococcus hirae which were isolated from the effluents of diary industries. Protease immobilized with super paramagnetic nanoparticles was characterized by DLS, XRD and TEM methods in relation to thei
Braz. arch. biol. technol.. Publicado em: 14/06/2018
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11. A Hybrid Approach for Assessments of Equivalent Emission Sources and Electromagnetic Environments
Abstract This paper presents a method for equivalent emission source determination by application of LLAs (Large Loop Antennas). A review of different types of LLAs is carried out and their characteristics regarding emission source evaluation are emphasized. A hybrid technic is applied for obtaining the electric fields based on previous measurement of magnet
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2018-03
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12. Critical Forces at Fractional Matching Fields in Superconducting Thin Films with Triangular Pinning Lattice
We numerically study the commensurability effects in the critical forces in a type II superconducting thin film with vortices under the influence of a triangular pinning lattice at sub matching fields and zero temperature. The analysis is made applying a transport force in two mutually perpendicular directions and magnetic field perpendicular to the film sur
Mat. Res.. Publicado em: 30/03/2017