نتایج جستجو برای: extremely low frequency elf

تعداد نتایج: 1668383  

Journal: :Environmental Health Perspectives 2000
G Chen B L Upham W Sun C C Chang E J Rothwell K M Chen H Yamasaki J E Trosko

Whether exposure of humans to extremely low frequency electromagnetic fields (ELF-EMF) can cause cancer is controversial and therefore needs further research. We used a Friend erythroleukemia cell line that can be chemically induced to differentiate to determine whether ELF-EMF could alter proliferation and differentiation in these cells in a manner similar to that of a chemical tumor promoter....

2014
Chao-Ying Huang Cheng-Wei Chang Chaang-Ray Chen Chun-Yu Chuang Chi-Shiun Chiang Wun-Yi Shu Tai-Ching Fan Ian C. Hsu

In daily life, humans are exposed to the extremely low-frequency electromagnetic fields (ELF-EMFs) generated by electric appliances, and public concern is increasing regarding the biological effects of such exposure. Numerous studies have yielded inconsistent results regarding the biological effects of ELF-EMF exposure. Here we show that ELF-EMFs activate the ATM-Chk2-p21 pathway in HaCaT cells...

2004
Henry Lai

Nonionizing electromagnetic fields (EMF) have photon energy less than 10eV, a level not sufficient to produce ions by ejection of orbital electrons from atoms. The biological effects of two types of nonionizing electromagnetic fields are being studies intensely: extremely-lowfrequency (ELF) electromagnetic field and radiofrequency radiation. Extremely-low-frequency EMF covers the frequency rang...

Journal: :International journal of occupational medicine and environmental health 2003
Eleonora Cermáková

OBJECTIVES The aim of the work was to present the results of measurements of extremely low frequency electromagnetic fields (ELF EMF), namely the magnetic flux density, inside infant incubators, and to compare these results with the data published by other authors who point out to a possible association between leukemia or other diseases observed in newborns kept in incubators after the birth a...

Journal: :Annual review of public health 2005
Maria Feychting Anders Ahlbom Leeka Kheifets

Electric and magnetic fields are ubiquitous in the modern society, and concerns have been expressed regarding possible adverse effects of these exposures. This review covers epidemiologic research on health effects of exposures to static, extremely low-frequency (ELF), and radio frequency (RF) fields. Research on ELF fields has been performed for more than two decades, and the methodology and q...

2017
Yu-Mi Kim Sang-Eun Cho Soo-Chan Kim Hyun-Joon Jang Young-Kwon Seo

This study evaluated frequency-dependent effects of extremely low frequency electromagnetic fields (ELF-EMFs) on melanogenesis by melanocytes in vitro. Melanocytes were exposed to 2 mT EMFs at 30-75 Hz for 3 days before melanogenesis was examined. Exposure to ELF-EMFs at 50 and 60 Hz induced melanogenic maturation without cell damage, without changing cell proliferation and mitochondrial activi...

Journal: :international journal of occupational hygiene 0
mohammad reza monazzam esmail pour hamed jalilian kamran najafi seyed abolfazl zakerian

original article background and objectives: one type of electromagnetic fields, based on frequency range, is extremely low frequency (elf) fields. there are lots of reports about measuring elf- magnetic field (mf) in substations, power plants, cities, near high voltage power lines and etc. this study aimed to compare the difference between measurement of three-axis and single-axis probe mf mete...

Journal: :Neuro endocrinology letters 2005
Pierluigi Cocco Maria Elisabetta Cocco Loredana Paghi Giuseppe Avataneo Alessio Salis Michele Meloni Sergio Atzeri Giorgio Broccia Maria Grazia Ennas Thomas C Erren Russel J Reiter

OBJECTIVES Exposure to extremely low frequency electromagnetic fields (ELF-EMF) has been suggested to suppress melatonin secretion, which might result in higher cancer risks because of its missing oncostatic action. We investigated the effects of residential exposure to ELF-EMF on the excretion of urinary 6-sulfatoxymelatonin (6-OHMS), the major melatonin metabolite, as an indicator of nocturna...

2014
Chao-Ying Huang Chun-Yu Chuang Wun-Yi Shu Cheng-Wei Chang Chaang-Ray Chen Tai-Ching Fan Ian C. Hsu

Following an increase in the use of electric appliances that can generate 50 or 60 Hz electromagnetic fields, concerns have intensified regarding the biological effects of extremely low-frequency electromagnetic fields (ELF-EMFs) on human health. Previous epidemiological studies have suggested the carcinogenic potential of environmental exposure to ELF-EMFs, specifically at 50 or 60 Hz. However...

2015
Ion Udroiu Antonio Antoccia Caterina Tanzarella Livio Giuliani Francesca Pacchierotti Eugenia Cordelli Patrizia Eleuteri Paola Villani Antonella Sgura Maria Rosaria Scarfi

BACKGROUND Few studies have investigated the toxicity and genotoxicity of extremely low frequency magnetic fields (ELF-MF) during prenatal and neonatal development. These phases of life are characterized by cell proliferation and differentiation, which might make them sensitive to environmental stressors. Although in vitro evidences suggest that ELF-MF may modify the effects of ionizing radiati...

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