نتایج جستجو برای: electromagnetic fields

تعداد نتایج: 307264  

برزگری فیروز ابادی, فاطمه, میرحسینی, محبوبه,

Introduction: Access to modern methods for increasing the percentage of in vitro human and animal mature oocytes can be useful in the treatment of some forms of human infertility as well as proliferation of many domestic and wild animals which generation is endangered. Effect of low- frequency electromagnetic fields on in vitro growth and maturation of mouse oocytes is recently considered as a ...

Journal: :journal of biomedical physics and engineering 0
smj mortazavi s rahimi a talebi a soleimani a rafati

introduction : the  rapid development  of wireless telecommunication technologies  over the past decades, has led to significant changes in the exposure of the general public to electromagnetic fi elds. nowadays, people are continuously exposed to different sources of electromagnetic fi elds such as mobile phones, mobile base stations, cordless phones, wi-fi routers, and power lines. therefore,...

Journal: :The Journal of Bone and Joint Surgery. British volume 1991

Amin allah Bahaoddini Maryam Owjfard Sayyed Esmaeil Khoshnam Seyedeh Marzieh Jafari

Background & Aims: In the recent years, increasing rate of using electronic devices which generate electromagnetic fields , has caused researchers, attention to the effects of electromagnetic fields on human health. The aim of this study is to investigate the effect of prolonged exposure to extremely low frequency electromagnetic fields(ELF) on the Cholinergic system in the small intestine of r...

Journal: :jundishapur journal of health sciences 0
edris hosinzadeh department of environmental health engineering, faculty of health, lorestan university of medical sciences, khorramabad, ir iran mohammad reza samarghandi department of environmental health engineering, faculty of health, hamadan university of medical sciences, hamadan, ir iran mohammad amin faghih department of environmental health engineering, faculty of health, hormozgan university of medical sciences, bandarabbas, iran. ghodratollah roshanaei department of epidemiology and biostatistics, faculty of health, hamadan university of medical sciences, hamadan, ir iran zahra hashemi reza shahidi department of environmental health engineering, faculty of health, hamadan university of medical sciences, hamadan, ir iran

printing and copying centers have been implicated as an emission source of pollution, and affecting air quality in closed environments. the aim of this study was to measure the btex compound (benzene, toluene, ethyl benzene, and xylenes), and the intensity of electromagnetic fields and the uva ray in photocopy centers in the hamadan city. this descriptive study was done on 45 printing and copyi...

Donyapour N Gharamaleki H Roshangar L, Soleimani Rad J Valipoor A

Background: Electromagnetic fields interact with human tissues and may have adverse effects on fertility and reproduction. During the last decades there has been a growing concern on the effects of electromagnetic radiations on biological systems in general. Radiation risks from electromagnetic fields generated by processes such as reduced fertility and a significant decrease in implantation ra...

Journal: :journal of paramedical sciences 0
elaheh nooshinfar cancer research center, shahid beheshti university of medical sciences, tehran mostafa rezaei-tavirani proteomics research center, faculty of paramedical sciences, shahid beheshti university of medical sciences, tehran soheila khodakarim proteomics research center, faculty of paramedical sciences, shahid beheshti university of medical sciences, tehran

electromagnetic field (emf) radiation affects cellular and brain chemistry and function, resulting in deleterious effects such as free radicals formation, impaired dna repair, reduced melatonin and blood brain barrier protection, and defects on learning and memory and other higher brain functions. in this paper the effects of low frequency emf of 50- and 217 hz, ranges often associated with com...

Background and purpose:  Angiogenesis has a role in many vital processes also many developmental processes are influenced by an electromagnetic field. In the present study the synergic effects of silver nanoparticles and low-frequency electromagnetic field on angiogenesis in the chick embryo chorioallantoic membrane (CAM). Materials and method: In this experimental study, (Ross strain )...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه 1377

the methods which are used to analyze microstrip antennas, are divited into three categories: empirical methods, semi-empirical methods and full-wave analysis. empirical and semi-empirical methods are generally based on some fundamental simplifying assumptions about quality of surface current distribution and substrate thickness. thses simplificatioms cause low accuracy in field evaluation. ful...

ژورنال: پژوهش در پزشکی 2003
نیلوفر مهدوی هزاوه, , علیرضا ظهیرالدین, ,

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...

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