الفهرس 
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Abstract
During the past few decades, due to the increasing consumption of electric energy in industry, medicine, research, communication systems and house hold electric appliances; the level of exposure of biological systems to electromagnetic fields has grown by orders of magnitude over a wide frequency range extending from 0 to 100 GHz. For example power lines and ordinary devices(hair dryers, electric shavers and electric hand tools) used inside house and work places may expose the user to electromagnetic fields of several times above the background (Eman et al.,2007) (1). As a consequence, the effects of extremely low frequency electromagnetic fields (ELF-EMFs) on the biological functions of living organisms represent an emerging area of interest with respect to environmental influences on human health.