نتایج جستجو برای: elf principles

تعداد نتایج: 146358  

2012
Sumitra Chakraborty Meonis Pithawala Pankaj Gadhia

The present cytogenetic study was conducted on subjects occupationally exposed to extremely low frequency electromagnetic fields (ELF–EMF), whereby Chromosomal Aberrations (CAs) and Sister Chromatid Exchange (SCE) frequencies were premeditated. These subjects were electric substation attendants, electric arc welders and individuals working in the vicinity of electric distribution point (DP) tra...

1996
Andrea Bonarini

We discuss the problem of learning fuzzy rules using Evolutionary Learning techniques, such as Genetic Algorithms and Learning Classifier Systems. We present ELF, a system able to evolve a population of fuzzy rules to obtain a sub-optimal Fuzzy Logic Controller. ELF tackles some of the problems typical of the Evolutionary Learning approach: competition and cooperation between fuzzy rules, evolu...

Journal: :The journal of physical chemistry. A 2005
G V Gibbs D F Cox N L Ross T D Crawford R T Downs J B Burt

The electron localization function (ELF) and experimental and theoretical deformation electron density maps are compared for several earth materials and one representative molecule. The number and arrangement of the localized one-electron probability density domains generated in a mapping of the ELF correspond to the number and arrangement of the localized electron density domains generated in ...

Journal: :Cytometry 2001
W Telford W Cox V Singer

BACKGROUND The fluorogenic alkaline phosphatase (AP) substrate 2-(5'-chloro-2'-phosphoryloxyphenyl)-6-chloro-4-(3H)-quinazolinone (ELF(R)-97 phosphate, for Enzyme-Labeled Fluorescence) has been used primarily in microscope-based imaging applications to detect endogenous AP activity, antigens and various ligands in cells and tissues, and nucleic acid hybridization. In a previous study, we demons...

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...

Journal: :American journal of physiology. Lung cellular and molecular physiology 2004
Richard M Effros Marshall B Dunning Julie Biller Reza Shaker

The exhaled breath condensate (EBC) approach provides a convenient and noninvasive approach for sampling the pulmonary epithelial lining fluid (ELF). Increased EBC concentrations of more than a dozen inflammatory markers and hydrogen ions have been reported in lung diseases associated with inflammation. However, the usefulness of EBC is compromised by uncertainties concerning the sources of the...

2015
Zhenhua Shi Hui Yu Yongyan Sun Chuanjun Yang Huiyong Lian Peng Cai

A literal mountain of documentation generated in the past five decades showing unmistakable health hazards associated with extremely low-frequency electromagnetic fields (ELF-EMFs) exposure. However, the relation between energy mechanism and ELF-EMF exposure is poorly understood. In this study, Caenorhabditis elegans was exposed to 50 Hz ELF-EMF at intensities of 0.5, 1, 2, and 3 mT, respective...

Journal: :Journal of applied physiology 1999
J H Roum Z Borok N G McElvaney G J Grimes A D Bokser R Buhl R G Crystal

Cystic fibrosis (CF) is characterized by accumulation of activated neutrophils and macrophages on the respiratory epithelial surface (RES); these cells release toxic oxidants, which contribute to the marked epithelial derangements seen in CF. These deleterious consequences are magnified, since reduced glutathione (GSH), an antioxidant present in high concentrations in normal respiratory epithel...

Journal: :Scientific reports 2016
Zhi-cheng Sun Jian-long Ge Bin Guo Jun Guo Mei Hao Yi-chen Wu Yi-an Lin Ting La Pan-tong Yao Yan-ai Mei Yi Feng Lei Xue

Accumulating evidence suggests significant biological effects caused by extremely low frequency electromagnetic fields (ELF-EMF). Although exo-endocytosis plays crucial physical and biological roles in neuronal communication, studies on how ELF-EMF regulates this process are scarce. By directly measuring calcium currents and membrane capacitance at a large mammalian central nervous synapse, the...

2012
D. Agrawal R. C. Moore

[1] Dual-beam ELF wave generation experiments performed at the High-frequency Active Auroral Research Program (HAARP) HF transmitter are used to investigate the dependence of the generated ELF wave magnitude on HF power, HF frequency, modulation waveform, and receiver location. During the experiments, two HF beams transmit simultaneously: one amplitude modulated (AM) HF beam modulates the condu...

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