نتایج جستجو برای: static magnetic fields smf
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Environmental electromagnetic fi elds are nowadays available in all environments today. These areas affect the biological system. Controlled interactions with elecrtomagnetic fi elds can have positive effects when unrestricted interactions have negative effects. Uncontrolled exposure to low-frequency electromagnetic fi elds can cause adverse effects such as signal transduction in cells and tiss...
INTRODUCTION Many studies on the biological effects of electric and magnetic fields have been conducted since Wertheimer and Leeper reported an association between wiring configuration and childhood cancer among residents in Denver, Colorado. The genetic effects, especially mutagenicity and carcinogenicity, of electromagnetic fields have also been studied experimentally with positive and negati...
Introduction: Staff and patient Movement in static magnetic field MRI scanner induces current density in the human tissues, so cause biologic effects in people. The aim of this study was the Modelling of current density induced by moving individual with different velocities in static magnetic field of magnetic resonance imaging. Materials and Methods: current ...
[1] Remote detection and measurement of the slowly varying continuing current that follows some lightning return strokes is difficult. Slow changes in quasi-static electric fields have been most frequently used to remotely measure continuing current. Because of the rapid attenuation of dipole electric fields with distance, though, the range over which the current will produce a measurable signa...
INTRODUCTION IN THIS document, guidelines are established for the protection of workers moving in static magnetic fields or being exposed to magnetic fields with frequencies below 1 Hz. This includes, but is not limited to workers engaged in activities related to magnetic resonance imaging (MRI). The general principles for the development of ICNIRP guidelines are published elsewhere (ICNIRP 200...
In this study, short-term experiments were conducted with different configurations of membrane hybrid systems to treat biological treated sewage effluent containing refractory organic pollutants: (i) submerged hollow fiber microfiltration (SMF) alone; (ii) spiral flocculator (SF)-SMF without settling; (iii) SF-PAC-SMF without settling and (iv) SMF with magnetic ion exchange resin MIEX pretreatm...
We present a neutron-scattering study of the static and dynamic spin correlations in the underdoped high-temperature superconductor YBa2Cu3O6.45 in magnetic fields up to 15 T. The field strongly enhances static incommensurate magnetic order at low temperatures and induces a spectral-weight shift in the magnetic-excitation spectrum. A reconstruction of the Fermi surface driven by the field-enhan...
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