نتایج جستجو برای: elf and internet

تعداد نتایج: 16853579  

Introduction: Researchers have long been interested in the effects of low intensity (less than 500 microtesla) and Extremely Low Frequency Magnetic Fields (ELF-MF, less than 300 Hz) on human’s brain activity. In this study, our purpose was to analyze the effect of local magnetic field pulses around brain regions Cz, C3, C4 on human electroencephalogram (EEG) and induction of resonance effect...

Journal: :The European respiratory journal 1992
U Costabel J Guzman

Increasing knowledge has accumulated relating to the effect of cigarette smoking on cells and other constituents in bronchoalveolar lavage (BAL) fluid. Such knowledge is important for the correct evaluation of BAL results. When BAL records are interpreted, smoking has to be considered as a major confounding factor. In this issue of the Journal, BuRKE et al. [1] add a new aspect to the adverse e...

2015
Anke Huss Tom Koeman Hans Kromhout Roel Vermeulen Martin Röösli

OBJECTIVE To examine the association between occupational exposure to extremely-low-frequency magnetic fields (ELF-MF) and Parkinson's disease. METHODS We systematically searched publications reporting risk estimates of Parkinson's disease in workers exposed to ELF-MF. Summary relative risks were obtained with random effects meta-analysis. RESULTS We included 11 studies. To assign exposure,...

Journal: :Antimicrobial agents and chemotherapy 2012
Hitoshi Ishizuka Kaoru Toyama Satoshi Yoshiba Hiromi Okabe Hidetoshi Furuie

A single inhaled dose of laninamivir octanoate (LO), a long-acting neuraminidase inhibitor, exhibits efficacy in treating both adult and pediatric patients with influenza virus infection. The intrapulmonary pharmacokinetics (PK) of LO and laninamivir, a pharmacologically active metabolite, were investigated by a single-center, open-label study of healthy adult volunteers. Subgroups of five subj...

2015
Qian-Ru Zhao Jun-Mei Lu Jin-Jing Yao Zheng-Yu Zhang Chen Ling Yan-Ai Mei

Animal studies have shown that electromagnetic field exposure may interfere with the activity of brain cells, thereby generating behavioral and cognitive disturbances. However, the underlying mechanisms and possible preventions are still unknown. In this study, we used a mouse model to examine the effects of exposure to extremely low-frequency (50 Hz) electromagnetic fields (ELF MFs) on a recog...

2015
Yoon Hee Chung Young Joo Lee Ho Sung Lee Su Jin Chung Cheol Hee Lim Keon Woong Oh Uy Dong Sohn Eon Sub Park Ji Hoon Jeong

This study was aimed to observe that extremely low frequency magnetic field (ELF-MF) may be relevant to changes of major neurotransmitters in rat brain. After the exposure to ELF-MF (60 Hz, 2.0 mT) for 2 or 5 days, we measured the levels of biogenic amines and their metabolites, amino acid neurotransmitters and nitric oxide (NO) in the cortex, striatum, thalamus, cerebellum and hippocampus. The...

Journal: :The Korean journal of physiology & pharmacology : official journal of the Korean Physiological Society and the Korean Society of Pharmacology 2011
Min Eui Hong Kyu Hyun Yoon Yoon Yang Jung Tae Jin Lee Eon Sub Park Uy Dong Sohn Ji Hoon Jeong

Extremely low frequency magnetic fields (ELF-MF) have the ability to produce a variety of behavioral and physiological changes in animals. The stomach, as the most sensitive part of the neuroendocrine organ of the gastrointestinal tract, is crucial for the initiation of a full stress response against all harmful stress. Thus, the purpose of this study was to examine whether ELF-MF stimuli induc...

2013
KiTaek Lim Jin Hexiu Jangho Kim Hoon Seonwoo Woo Jae Cho Pill-Hoon Choung Jong Hoon Chung

This study was performed to investigate the effects of extremely low frequency pulsed electromagnetic fields (ELF-PEMFs) on the proliferation and differentiation of human alveolar bone-derived mesenchymal stem cells (hABMSCs). Osteogenesis is a complex series of events involving the differentiation of mesenchymal stem cells to generate new bone. In this study, we examined not merely the effect ...

2016
Daryoush Shahbazi-Gahrouei Leila Shiri Hojjatollah Alaei Naser Naghdi

The aim of this study was to investigate the effect of continuous extremely low frequency magnetic fields (ELF-MFs) with a frequency of 10 Hz and an intensity of 690-720 μT on the level of 5-hydroxyindolacetic acid (5-HIAA) in adult male Wistar rats. A total of 24 adult Wistar male rats were used, and after exposure with an ELF-MF for 15 successive days, all rats in each test were anesthetized ...

1999
Steven A. Cummer Umran S. Inan

Observations of extremely low frequency (ELF) radio atmospherics (sferics), the transient electromagnetic fields radiated by lightning discharges, are used to determine the current moment waveforms of vertical lightning discharges. In order to extract this information the propagation of radio atmospherics from source to receiver must be modeled accurately, especially in view of the important ro...

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