Abstract:
:Both positive and negative biological effects of microwaves on drug actions in rats exposed to 1-mW/cm2, 2,450-MHz microwaves have been reported by several investigators. We conducted dosimetry studies for seven different exposure conditions to determine whether these different results could be due to the rats having been exposed differently. They included anterior and posterior exposures in a circular waveguide, near field, far field with E- or H-field parallel to the long axis of the body and dorsal exposure in a miniature anechoic chamber with E- or H-field parallel to the long axis of the body. The average specific absorption rates (SARs) in the head, tail, and body of the exposed rats were measured by means of a calorimetry system. The local SARs at eight locations in the brain were determined by temperature measurement with Vitek probes. Intensive coupling of energy to the tail when it was exposed parallel to the E-field was shown by thermography. For the same average incident power density, the average SARs in the heads of rats were about two times higher in the circular waveguide than for other exposures. The local SARs in the brain varied for different exposure conditions. Statistical comparisons of SARs under the different exposure conditions are presented.
journal_name
Bioelectromagneticsjournal_title
Bioelectromagneticsauthors
Chou CK,Guy AW,McDougall JA,Lai Hdoi
10.1002/bem.2250060108subject
Has Abstractpub_date
1985-01-01 00:00:00pages
73-88issue
1eissn
0197-8462issn
1521-186Xjournal_volume
6pub_type
杂志文章abstract::In view of possible therapeutic applications of magnetic fields, the effect of an enhancement of neuronal outgrowth at higher figures of flux density and induced field strength was investigated. On the average sinusoidal magnetic field treatment at 100 microTrms/50 Hz did not change nerve growth factor (NGF) induced n...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
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journal_title:Bioelectromagnetics
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journal_title:Bioelectromagnetics
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journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250070303
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journal_title:Bioelectromagnetics
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journal_title:Bioelectromagnetics
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更新日期:2009-07-01 00:00:00
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journal_title:Bioelectromagnetics
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更新日期:2007-05-01 00:00:00
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journal_title:Bioelectromagnetics
pub_type: 杂志文章
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更新日期:2000-01-01 00:00:00
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pub_type: 杂志文章
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journal_title:Bioelectromagnetics
pub_type: 历史文章,杂志文章
doi:10.1002/(sici)1521-186x(1999)20:4+<9::aid-bem3>3.3
更新日期:1999-01-01 00:00:00
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pub_type: 杂志文章
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更新日期:2010-10-01 00:00:00
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journal_title:Bioelectromagnetics
pub_type: 临床试验,杂志文章
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更新日期:2012-07-01 00:00:00
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journal_title:Bioelectromagnetics
pub_type: 杂志文章
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更新日期:2018-10-01 00:00:00
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pub_type: 信件
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journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.21852
更新日期:2014-07-01 00:00:00
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journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/(sici)1521-186x(1997)18:7<491::aid-bem4>3.
更新日期:1997-01-01 00:00:00
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journal_title:Bioelectromagnetics
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doi:10.1002/bem.2250080108
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journal_title:Bioelectromagnetics
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journal_title:Bioelectromagnetics
pub_type: 杂志文章
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journal_title:Bioelectromagnetics
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更新日期:1991-01-01 00:00:00
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journal_title:Bioelectromagnetics
pub_type: 杂志文章
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更新日期:1984-01-01 00:00:00
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journal_title:Bioelectromagnetics
pub_type: 杂志文章
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更新日期:2009-04-01 00:00:00
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journal_title:Bioelectromagnetics
pub_type: 杂志文章
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更新日期:2006-10-01 00:00:00
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journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20391
更新日期:2008-05-01 00:00:00
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journal_title:Bioelectromagnetics
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journal_title:Bioelectromagnetics
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journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250020310
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