نتایج جستجو برای: extremely low frequency elf

تعداد نتایج: 1668383  

2010
M. MATAVULJ V. RAJKOVIĆ B. LAŽETIĆ

Potential health risk of extremely low frequency electromagnetic field [ELF-EMF] exposure are of considerable public interest. In the present study we investigated the effect of three months exposure to ELF-EMF of frequency [50 Hz] and intensity [50 μT to 500 μT] to which humans can be exposed in their home and work environments on the blood vessels morphology and number in adenohypophysis of m...

Donyapour N Gharamaleki H Valipoor A

Background: Human beings are unavoidably exposed to ambient electromagnetic fields (EMF) generated from various electrical devices and from power transmission lines. The effects of extremely low-frequency electromagnetic fields (ELF-EMF) on the biological functions of living organisms represent an emerging area of interest for human health. One of the critical issues is that EMF may adversely a...

2014
Kwang Rae CHO Myoung-Hun KIM Myoung Jin KO Jae Wook JUNG Ki Hwa LEE Yei-Heum PARK Yong Han KIM Ki Hoon KIM Jin Soo KIM

BACKGROUND Hypothermia generates potentially severe complications in operating or recovery room. Forced air warmer is effective to maintain body temperature. Extremely low frequency electromagnetic field (ELF-EMF) is harmful to human body and mainly produced by electronic equipment including convective air warming system. We investigated ELF-EMF from convective air warming device on various tem...

2013
M. B. Cohen M. Gołkowski

[1] Extremely low frequency/very low frequency (ELF/VLF) radio waves are difficult to generate with conventional antennas. Ionospheric high frequency (HF) heating facilities generate ELF/VLF waves via modulated heating of the lower ionosphere. HF heating of the ionosphere changes the lower ionospheric conductivity, which in the presence of natural currents such as the auroral electrojet creates...

Journal: :international journal of endocrinology and metabolism 0
mahnaz taherianfard department of physiology, school of vetetrinary medicine, shiraz university, shiraz, ir iran; department of physiology, school of vetetrinary medicine, shiraz university, shiraz, ir iran. p.o.box: 1731, postcode: 71345. tel: +98-7112286950, fax: +98-7112286940 aminolah bahaddini department of biology, faculty of basic science, shiraz university, shiraz, ir iran sara keshtkar department of biology, university of scientific-practical, shiraz university, shiraz, ir iran mehdi fazeli department of pharmacology, school of vetetrinary medicine, shiraz university, shiraz, ir iran tahora shomali department of pharmacology, school of vetetrinary medicine, shiraz university, shiraz, ir iran

conclusions no interactivity is present in modulatory effects of gabaa receptors and elf-emfs on serum testosterone of male rats. patients and methods fifty adult male rats were randomly assigned into 10 groups. groups 2, 4, 6, 8, and 10 were exposed to elf-emf for 30 days 8hrs per day; while, the remaining groups (1, 3, 5, 7, and 9) were sham exposed animals. at the end of the experiment, anim...

2013
Balwant P. Salunke Sudhir N. Umathe Jagatpalsingh G. Chavan

The present study was designed to investigate the influence of Extremely low frequency magnetic field (ELF MF) on depression related behavior, and mechanism involved therein. Mice were exposed to ELF MF (50Hz, 10G) 8h/day for 7, 30, 60, 90 and 120 days. Depression was assessed using forced swim test (FST), in which no significant effect was observed on 7 t h, 30t h, 60 t h, 90t h exposure day. ...

Journal: :Bioelectromagnetics 2005
Leeka Kheifets Riti Shimkhada

All populations are exposed to varying degrees of electromagnetic fields (EMF); in this study we consider only extremely low frequency (ELF) and radio frequency (RF) fields. After the first study of ELF and childhood leukemia in 1979, intensive epidemiologic investigation has sought to shed light on the potential relation between EMF and childhood leukemia. Consistent associations from epidemio...

2016
Alexander P. Nickolaenko Yuri. P. Galuk Masashi Hayakawa

We introduce the vertical profile of atmospheric conductivity in the range from 2 to 98 km. The propagation constant of extremely low frequency (ELF) radio waves was computed for this profile by using the full wave solution. A high correspondence is demonstrated of the data thus obtained to the conventional standard heuristic model of ELF propagation constant derived from the Schumann resonance...

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...

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