نتایج جستجو برای: electromagnetic phenomenaadverse effects

تعداد نتایج: 1611144  

Journal: :acta medica iranica 0
m. shayani-nasab s. a. safavi naiianni m. r. fathol alolomi a. makaremi

the exposure to electromagnetic field emitted by mobile telephones is increasing rapidly worldwide that causes side effects, including thermal and non thermal side effects. ear proximity to electromagnetic source may lead to greater damage and side effects, including hearing loss. this study was performed to assess the chronic effect of exposure to electromagnetic field of mobile telephones on ...

Journal: :the modares journal of electrical engineering 2011
ahmadreza amin alireza salehi mohammd hossin ghezelayagh yaghob ghanegharabagh

voltages and currents are induced into electronic circuit boards as electromagnetic waves are radiated on them. the strength of induction depends on the wavefront and the circuit board characteristics. in this paper, by solving maxwell’s equations using fdtd method and then by extending it by three dimensional simulation using the gpml criteria for boundary conditions and tf/sf technique, effec...

Fatemeh Seif, Ghasem Habibi Hadi Ansarihadipour Mohamad Reza Bayatiani,

Introduction: Physical factors such as electromagnetic fields and chemical agents such as aluminum compounds can act as oxidative stress inducer. In the present study synergistic and toxic effects of aluminum in the presence of an alternating electromagnetic field is investigated. In order to make the protection the extract of Myrtus Communis was used Materials and Met...

2012
P. Sowa

The article reviews the current state of large-scale studies about the impact of electromagnetic field on natural environment. The scenario of investigations – simulation of natural conditions at the workplace, taking into consideration the influence both low and high frequency electromagnetic fields is shown.The biological effects of low and high frequency electromagnetic fields are below pres...

Journal: :journal of biomedical physics and engineering 0
s zarei smj mortazavi ar mehdizadeh m jalalipour s borzou s taeb

800x600 background: nowadays, mothers are continuously exposed to different sources of electromagnetic fields before and even during pregnancy.   it has recently been shown that exposure to mobile phone radiation during pregnancy may lead to adverse effects on the brain development in offspring and cause hyperactivity. researchers have shown that behavioral problems in laboratory animals which ...

2012
P. Sowa

The article reviews the current state of large-scale studies about the impact of electromagnetic field on natural environment. The scenario of investigations – simulation of natural conditions at the workplace, taking into consideration the influence both low and high frequency electromagnetic fields is shown.The biological effects of low and high frequency electromagnetic fields are below pres...

Journal: :Journal of cellular biochemistry 1993
C A Bassett

Selective control of cell function by applying specifically configured, weak, time-varying magnetic fields has added a new, exciting dimension to biology and medicine. Field parameters for therapeutic, pulsed electromagnetic field (PEMFs) were designed to induce voltages similar to those produced, normally, during dynamic mechanical deformation of connective tissues. As a result, a wide variety...

Journal: :Journal of cellular biochemistry 1993
W R Adey

Life on earth has evolved in a sea of natural electromagnetic (EM) fields. Over the past century, this natural environment has sharply changed with introduction of a vast and growing spectrum of man-made EM fields. From models based on equilibrium thermodynamics and thermal effects, these fields were initially considered too weak to interact with biomolecular systems, and thus incapable of infl...

Journal: :Bioelectromagnetics 2005
Jukka Juutilainen

This paper reviews experimental studies on the effects of radiofrequency (RF), extremely low frequency (ELF), and intermediate frequency (IF) electromagnetic fields on animal development. Numerous studies have shown that RF fields are teratogenic at exposure levels sufficiently high to cause significant increase of temperature. There is no consistent evidence of RF field effects at nonthermal e...

Journal: Nanomedicine Journal 2014
Ahmad Reza Shahverdi, Bardia Varastehmoradi Bijan Zare, Eswarapriya Balu Jegatheesan Kalirajan Reza Davoodi

Objective(s):Electromagnetic radiations which have lethal effects on the living cells are currently also considered as a disinfective physical agent.   Materials and Methods: In this investigation, silver nanoparticles were applied to enhance the lethal action of low powers (100 and 180 W) of 2450 MHz electromagnetic radiation especially against Escherichia coli ATCC 8739. Silver nanoparticles ...

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