نتایج جستجو برای: electromagnetic wave emission

تعداد نتایج: 454354  

2017
Daniel J. Gershman Adolfo F-Viñas John C. Dorelli Scott A. Boardsen Levon A. Avanov Paul M. Bellan Steven J. Schwartz Benoit Lavraud Victoria N. Coffey Michael O. Chandler Yoshifumi Saito William R. Paterson Stephen A. Fuselier Robert E. Ergun Robert J. Strangeway Christopher T. Russell Barbara L. Giles Craig J. Pollock Roy B. Torbert James L. Burch

Alfvén waves are fundamental plasma wave modes that permeate the universe. At small kinetic scales, they provide a critical mechanism for the transfer of energy between electromagnetic fields and charged particles. These waves are important not only in planetary magnetospheres, heliospheres and astrophysical systems but also in laboratory plasma experiments and fusion reactors. Through measurem...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه مازندران - دانشکده علوم پایه 1386

چکیده ندارد.

2008
Alper Şen M. Ümit Gümüşay Aktül Kavas Umut Bulucu

Wireless communication networks offer subscribers the possibilities of free mobility and access to information anywhere at any time. Therefore, electromagnetic coverage calculations are important for wireless mobile communication systems, especially in Wireless Local Area Networks (WLANs). Before any propagation computation is performed, modeling of indoor radio wave propagation needs accurate ...

Journal: :international journal of high risk behaviors and addiction 0
gholamreza komeili department of physiology, school of medicine, university of medical sciences, zahedan, ir iran; department of physiology, school of medicine, university of medical sciences, zahedan, ir iran. tel: +98-5413414575, fax: +98-5413414561 sima nabizadeh sarabandi department of english, school of medicine, university of medical sciences, zahedan, ir iran

background the increasing use of mobile phones in recent years has caused concerns about the effects of electromagnetic waves of mobile phonesonhuman biological processes. objectives this study was conducted in order to survey the effects of mobile electromagnetic waves on electro cardiogram parameters as heart rate, tp segment, pr interval, time of qrs and t waves, and voltage of r wave. patie...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تهران 1386

چکیده ندارد.

Journal: :iranian journal of medical physics 0
seyed mohammad firoozabadi associated professor, medical physics dept., tarbiat modares university, tehran, iran. majid jadidi assistant professor, medical physics dept., semnan university of medical sciences, semnan, iran. ali rashidy-pour professor, physiology research center, semnan university of medical sciences, semnan, iran. bahram bolouri associated professor, medical physics dept., iran university of medical sciences, tehran, iran. yaghoob fathollahi professor, physiology dept., tarbiat modares university, tehran, iran. gholamreza mohammadi assistant professor, semnan university of medical sciences, semnan, iran.

introduction: over the last decade, exposure to electromagnetic waves due to base station antennas has increased. this study was planned to evaluate the effects of different electrical field strengths with 950 mhz waves of the gsm mobile phone system on the excitatory postsynaptic potentiation (epsp) slope of the dentate gyrus long-term potentiation (ltp). material and methods: twenty four naiv...

Journal: :International braz j urol : official journal of the Brazilian Society of Urology 2014
Orhan Koca Ali Murat Gokce Mehmet Akyuz Feriha Ercan Necati Yurdakul Muhammet Ihsan Karaman

PURPOSE Technological developments provide a lot of conveniences to our lives. This issue is one of the risks that arise along with these conveniences. In our study we tried to understand the impact of electromagnetic waves from mobile phones on bladder tissue. MATERIALS AND METHODS Twenty-one adult male albino rats were divided into three equal groups. Group 1 was exposed to electromagnetic ...

2014
Eugene Rhee Changjae Kim

This paper presents the electromagnetic interference and electromagnetic susceptibility characteristics of the railway telecommunication intra-subsystem. These are for assessing the electromagnetic compatibility inside the railway telecommunication subsystem and providing input data for electromagnetic compatibility analysis of other subsystems (intra-system analysis). This paper shows the opti...

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