نتایج جستجو برای: extremely low frequency pulsed electromagnetic field elf

تعداد نتایج: 2389046  

2005
Vesna RAJKOVIC Milica MATAVULJ Bogosav LAZETIC

In this study, the influence of power frequency electromagnetic field on body mass was investigated. Experiment was performed on male rats during the first three months of their postnatal life. The obtained results indicated to small changes in body mass and significant alterations of mass gain in exposed animals, compared to controls.

Journal: :General physiology and biophysics 2017
Ercan Ozdemir Ayse Demirkazik Sinan Gursoy Ahmet S Taskıran Olca Kilinc Gokhan Arslan

Several studies have demonstrated that the electromagnetic fields produce analgesic activity. The aim of this study was to investigate the effects of extremely low frequency (ELF) electromagnetic fields (EMF) on morphine analgesia and tolerance in rats. In the study, 78 adult male Wistar albino rats (approximately 240 ± 12 g) were used. The application of 50 Hz magnetic field, each day the same...

Journal: :Cell calcium 2014
Yujie Cui Xiaoyu Liu Tingting Yang Yan-Ai Mei Changlong Hu

Extremely low-frequency electromagnetic fields (ELF-EMF) causes various biological effects through altering intracellular calcium homeostasis. The role of high voltage-gated (HVA) calcium channels in ELF-EMF induced effects has been extensively studied. However, the effect of ELF-EMF on low-voltage-gated (LVA) T-type calcium channels has not been reported. In this study, we test the effect of E...

Introduction: Today, humans leave in a world surrounded by electromagnetic fields. Numerous studies have been carried out to discover the biological, physiological, and behavioral effects of electromagnetic fields on humans and animals. Given the biological similarities between monkeys and humans, the goal of the present research was to examine Visual Memory (VM), hormonal, genomic, and anatomi...

1999
Steven A. Cummer William M. Farrell

We theoretically analyze the propagation of very low frequency (VLF) and extremely low frequency (ELF) electromagnetic energy in the spherical waveguide formed by the ground and ionosphere of Mars to investigate the possibility of using such signals to remotely sense Martian ground conductivity and ionospheric parameters. This energy is presumed to be radiated from an electrical discharge in a ...

Journal: :iranian journal of cancer prevention 0
hadi hasanzadeh dept. of medical physics, semnan university of medical sciences, semnan, iran mostafa rezaie-tavirani proteomics research center, shahid beheshti university of medical sciences, tehran, iran samaneh sadat seyyedi dept. of medical genetics, tehran university of medical sciences, tehran, iran hakimeh zali faculty of paramedical sciences, shahid beheshti university of medical sciences, tehran, iran saeid heydari keshel faculty of paramedical sciences, shahid beheshti university of medical sciences, tehran, iran majid jadidi dept. of medical physics, semnan university of medical sciences, semnan, iran

background: extremely low frequency electromagnetic fields (elf-emf) have been common in daily life all over the world. they have produced by power lines and electrical appliances, but higher levels of them have raised a lot of concerns about their carcinogenesis. both epidemiological and laboratory studies have suggested that emfs might increase cancer incidence, including acute childhood leuk...

2010
John A. Robertson Jean Théberge Jodi Miller Julie Weller Dick J. Drost Frank S. Prato Alex W. Thomas

Previous studies have shown that magnetic fields have subtle effects on pain perception in animals as well as humans. Experiments with sinusoidal extremely low frequency magnetic fields as well as pulsed electromagnetic fields (PEMF) have indicated that PEMF may have a larger analgesic effect, and so may be more clinically relevant. Indeed, these effects have been demonstrated to be specific to...

ژورنال: دانشور پزشکی 2016
جعفری, حسین, هادی پور, مهسا,

Background and Objective: Use of extremely low frequency magnetic field) ELF-MF (has been reported in increasing blood sugar, cholesterol, triglyceride and reduction of withdrawal syndrome signs of morphine. Since pain is one of the main considerations and usually analgesic drugs are not very useful and have side effects, therefore, the present project was carried out using formalin test to eva...

2017
Zhen DING Jintao LI Fan LI Mohammadreza Mohammadzad MEPHRYAR Shuicai WU Chen ZHANG Yi ZENG

BACKGROUND The extremely low-frequency electromagnetic field (ELF-EMF), mainly emitted by electric transmission lines and household electronic appliances, is becoming a worldwide health risk. It is imperative to investigate the biological impacts of ELF-EMF and to identify products that are resistant to the radiation from 50 Hz ELF-EMF. In this study, we investigated the biological impacts of a...

2018
Michael Carlberg Tarmo Koppel Mikko Ahonen Lennart Hardell

Objective Exposure to extremely low-frequency electromagnetic fields (ELF-EMF) was in 2002 classified as a possible human carcinogen, Group 2B, by the International Agency for Research on Cancer at WHO based on an increased risk for childhood leukemia. In case-control studies on brain tumors during 1997-2003 and 2007-2009 we assessed lifetime occupations in addition to exposure to different age...

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