نتایج جستجو برای: electromagnetic
تعداد نتایج: 76522 فیلتر نتایج به سال:
Abstract Introduction: With ever improving technology and increasing the use of high voltage power in industrial environments, concerns about the destructive effects of electromagnetic waves on human health have increased. Thus the present study aims to evaluate the effects of electromagnetic waves on the general health of Zahedan gas power plant personnel. Materials & Method: The present...
Introduction & Objective: The aim of this study was to investigate the effect of electromagnetic field on the count and motility of adult rat's sperms and the protective effect of different dosages of zinc sulfate on it. Materials & Methods: Thirty two adult male rats were subdivided randomly into 4 groups: group1:serve as untreated controls,group2:was exposed to an electromagnetic field bu...
Background: With regard to the relation of exposure to electromagnetic field and disorders in some biological systems and also with respect to the increasing development of these fields, the present study was conducted on 101 employees in high voltage centers in Tehran in 2001 to determine the role of occupation in extremely low frequency (ELF) electromagnetic fields on mental health. Material...
Introduction: There have been many studies conducted on the effects of mobile phones radiations on people’s health due to increasing number of mobile phones users. The present study aimed to investigate the effects of electromagnetic waves generated from 3G and 4G mobile phone radiations on student’s reaction time and short-term memory. <stro...
In this manuscript, the electromagnetic (EM) radiation force (RF) exerted on a perfect conductor (PEMC) sphere by vortex (VEM) wave with spiral phase distribution had been investigated. The analytical formulation of EM fields is being done in framework Mie theory, while field expressions are modeled considering features VEM for PEMC sphere. Initially, incident coefficients evaluated using defin...
The switching device turn-on and turn-off process will produce high-frequency electromagnetic interference, based on the finite element method ANSYS software with powerful computing capabilities, has been widely used in complex electromagnetic field calculations. In this paper, ANSYS software to model and analyze the insulated gate bipolar transistor (IGBT) and quantitative distribution of elec...
In a set of two papers, we propose to study an old-standing problem, namely the electromagnetic interaction for particles of arbitrary spin. Based on the assumption that light-cone helicity at tree level and Q = 0 should be conserved non-trivially by the electromagnetic interaction, we are able to derive all the natural electromagnetic moments for a pointlike particle of any spin. In this first...
Due to the various physical mechanisms of interaction between a worker's body and the electromagnetic field at various frequencies, the principles of numerical simulations have been discussed for three areas of worker exposure: to low frequency magnetic field, to low and intermediate frequency electric field and to radiofrequency electromagnetic field. This paper presents the identified difficu...
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