نتایج جستجو برای: pulsed electromagnetic field

تعداد نتایج: 867068  

Journal: :British journal of sports medicine 1989
G C Goats

Therapy using pulsed electromagnetic energy is now used widely in the UK and many claims are made regarding its clinical effectiveness. The technique developed about 40 years ago from that of continuous short-wave diathermy, to which it is similar in many respects. There are, however, certain important differences between these therapies that influence significantly their clinical application. ...

2014
Yi-Lin Wu Shi-Rong Ma Tao Peng Zeng-Hui Teng Xiang-Yan Liang Guo-Zhen Guo Hai-Feng Zhang Kang-Chu Li

Electromagnetic fields are considered to potentially affect embryonic development, but the mechanism is still unknown. In this study, human embryonic stem cell (hESC) line HUES-17 was applied to explore the mechanism of exposure on embryonic development to pulsed electromagnetic field (PEMF) for 400 pulses at different electric field intensities and the differentiation of HUES-17 cells was obse...

Journal: :Physical review. D, Particles and fields 1996
Cataldo Salgado

We obtain the Einstein-Maxwell equations for (2+1)-dimensional static space-time, which are invariant under the transformation q0 = i q2, q2 = i q0, α ⇀↽ γ. It is shown that the magnetic solution obtained with the help of the procedure used in Ref. [6], can be obtained from the static BTZ solution using an appropriate transformation. Superpositions of a perfect fluid and an electric or a magnet...

2006
Geoffrey C. Goats

Therapy using pulsed electromagnetic energy is now used widely in the UK and many claims are made regarding its clinical effectiveness. The technique developed about 40 years ago from that of continuous short-wave diathermy, to which it is similar in many respects. There are, however, certain important differences between these therapies that influence significantly their clinical application. ...

2013
Charlie Huveneers Paul J. Rogers Jayson M. Semmens Crystal Beckmann Alison A. Kock Brad Page Simon D. Goldsworthy

Elasmobranchs can detect minute electromagnetic fields, <1 nV cm(-1), using their ampullae of Lorenzini. Behavioural responses to electric fields have been investigated in various species, sometimes with the aim to develop shark deterrents to improve human safety. The present study tested the effects of the Shark Shield Freedom7™ electric deterrent on (1) the behaviour of 18 white sharks (Carch...

Journal: :Optics express 2010
C S Lim M H Hong Z C Chen N R Han B Luk'yanchuk T C Chong

Planar hybrid metamaterial with different split ring resonators (SRR) structure dimensions are fabricated on silicon substrates by femtosecond (fs) laser micro-lens array (MLA) lithography and lift-off process. The fabricated metamaterial structures consist of: (a) uniform metamaterial with 4 SRRs at same design and dimension as a unit cell and (b) hybrid metamaterial with 4 SRRs at same design...

Journal: :The Open Medical Informatics Journal 2008
S Tsukamoto H Hoshino T Tamura

This paper describes an indoor behavioral monitoring system for improving the quality of life in ordinary houses. It employs a device that uses weak radio waves for transmitting the obtained data and it is designed such that it can be installed by a user without requiring any technical knowledge or extra constructions. This study focuses on determining the usage statistics of home electric appl...

Journal: :Physical review letters 2003
P A Varotsos N V Sarlis E S Skordas

The low frequency electric signals (emitted from the focal area when the stress reaches a critical value) that precede major earthquakes, are recorded at distances approximately 100 km being accompanied by magnetic field variations. The electric field "arrives" 1 to 2 s before the time derivative of the horizontal magnetic field. An explanation, which is still awaiting, should consider, beyond ...

2015
Patryk Zradziński

Due to the various physical mechanisms of interaction between a worker's body and the electromagnetic field at various frequencies, the principles of numerical simulations have been discussed for three areas of worker exposure: to low frequency magnetic field, to low and intermediate frequency electric field and to radiofrequency electromagnetic field. This paper presents the identified difficu...

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