نتایج جستجو برای: elf principles

تعداد نتایج: 146358  

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...

Journal: :journal of paramedical sciences 0
majid mahdavi department of biology, faculty of natural science, university of tabriz, tabriz, iran. reza yekta department of biology, faculty of natural science, university of tabriz, tabriz, iran. saeed hesami tackallou department of biology, garmsar branch, islamic azad university, tehran, iran.

extremely low frequency (elf) electromagnetic field (elf-emfs) are widely employed in electrical appliances and different equipment such as television sets, elf-emfs can  affect biological systems by increasing production  ros. the altered balance between ros generation and elimination plays a critical role in a variety of pathologic conditions. ros levels have been observed in several hematopo...

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,...

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...

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 ...

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...

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...

1994
Penny Anderson

This paper demonstrates a method of extracting programs from formal deductions represented in the Edinburgh Logical Framework, using the Elf programming language. Deductive systems are given for the extraction of simple types from formulas of rst-order arithmetic and of-calculus terms from natural deduction proofs. These systems are easily encoded in Elf, yielding an implementation of extractio...

Journal: :Antimicrobial agents and chemotherapy 1993
C Lamer V de Beco P Soler S Calvat J Y Fagon M C Dombret R Farinotti J Chastre C Gibert

Vancomycin penetration into the fluid lining the epithelial surface of the lower respiratory tract was studied by performing fiberoptic bronchoscopy with bronchoalveolar lavage on 14 critically ill, ventilated patients who had received the drug for at least 5 days. The apparent volume of epithelial lining fluid (ELF) recovered by bronchoalveolar lavage was determined by using urea as an endogen...

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...

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