نتایج جستجو برای: low frequency electromagnetic fields

تعداد نتایج: 1838387  

Journal: :International Journal of Emerging Trends in Engineering Research 2020

Journal: :iranian journal of radiation research 0
s.s. seyyedi proteomic research center, shahid beheshti university, tehran, iran h. mozdarani department of medical genetics, faculty of medical sciences, tarbiat modares university, tehran, iran m. rezaei tavirani faculty of paramedical sciences, shahid beheshti university, tehran, iran s. heydari proteomic research center, shahid beheshti university, tehran, iran

background: rapidly increasing possibilities of exposure to environmental extremely low-frequency electromagnetic fields (elf-emf) have become a topic of worldwide investigation. epidemiological and laboratory studies suggest that exposure to elf-emf may increase cancer risk therefore assessment of chromosomal damage in various cell lines might be of predictive value for future risk estimation....

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...

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...

Journal: :Medicine and war 1992
I L Doucet

Epidemiological studies since 1979 have raised some medical and much public concern that low frequency electromagnetic fields, such as those of power-lines and in domestic and industrial electrical wiring, may have harmful biological effects. These studies are generally inconsistent, inconclusive, and difficult to replicate. Identifying biological mechanisms by which such harmful effects may oc...

1999
Liliana Borcea George C. Papanicolaou

Using variational principles we construct discrete network approximations for the Dirichlet to Neumann or Neumann to Dirichlet maps of high contrast, low frequency electromagnetic media.

بلوری, بهرام, نیکبخت, فرناز, کهزاد, سوسن,

Background: Extremely low frequency (0-300 Hz) fields from power lines, electronic equipment and medical devices, have been reported to produce various biological effects. Global system for mobile (GSM) is most largely used in everybody's life. This system utilizes a low frequency band as well as a high frequency range of electromagnetic field. This study investigated the effects of 217 Hz elec...

Journal: :Journal of research in health sciences 2013
Fatemeh Shamsi Mahmoudabadi Saeideh Ziaei Mohammad Firoozabadi Anoshirvan Kazemnejad

BACKGROUND Exposure to extremely low frequency electromagnetic fields is increasingly common, but the potential influence on pregnant women has not been thoroughly investigated. METHODS In this case-control study, 58 women who had an unexplained spontaneous abortion at < 14 weeks gestation and 58 matched pregnant women >14 weeks gestation were enrolled in 2012. The women completed the questio...

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