Abstract:
:This report describes some experimental measurements of the internal field levels induced within isolated chick-forebrains irradiated at 50, 147, and 450 MHz, under essentially the same conditions as those used in the in vitro calcium-ion efflux experiments. Ratios of incident power at 50/147 MHz and 147/450 MHz that are needed to establish the same probe output are given and comparisons made with values predicted by different spherical models. Data predicted by the layered-sphere model were found to be in close agreement with measured values for the 50/147-MHz ratio. Agreement for the 147/450-MHz ratio was poorer.
journal_name
Bioelectromagneticsjournal_title
Bioelectromagneticsauthors
Weil CM,Spiegel RJ,Joines WTdoi
10.1002/bem.2250050302subject
Has Abstractpub_date
1984-01-01 00:00:00pages
293-304issue
3eissn
0197-8462issn
1521-186Xjournal_volume
5pub_type
杂志文章abstract::This study examines childhood cancer risk in relation to certain factors likely to indicate magnetic field exposure from ground currents in the home. Substantial ground currents are most often found in homes having conductive plumbing, in which an uninterrupted metallic path in the water pipes and water main connects ...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250160204
更新日期:1995-01-01 00:00:00
abstract::The aim of our study was to test the feasibility and reliability of personal dosimetry. Twenty-four hour exposure assessment was carried out in 42 children, 57 adolescents, and 64 adults using the Maschek dosimeter prototype. Self-reported exposure to mobile phone frequencies were compared with the dosimetry results. ...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20175
更新日期:2006-01-01 00:00:00
abstract::The aim of the present study was to investigate possible neurophysiological effects of intermittent 15 sec on/off cycle, 60 Hz, 10 microT magnetic field exposure on patients with perceived "electromagnetic hypersensitivity" (EHS), and control subjects during rest and performance of a mental arithmetic task. Twenty par...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:
更新日期:2001-10-01 00:00:00
abstract::Cultures of Escherichia coli kept at 0 degree C in a phosphate buffer solution were exposed to a sinusoidal weak 60- or 600-Hz magnetic field of strength 2 X 10(-3) Tesla. A decrease of more than 40% in bacterial count was observed after a 60-h exposure to the magnetic field. Electron micrographs of exposed bacteria s...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250020310
更新日期:1981-01-01 00:00:00
abstract::Some epidemiological studies suggest association of childhood cancer with occupational exposure of the parents to magnetic fields. To test this relationship, 50 each of C57BL/6J female and C3H/HeJ male mice were exposed for 2 and 9 weeks, respectively, to 50 Hz sham (group A), 0.5 (group B), and 5 mT (group C) sinusoi...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.10012
更新日期:2002-04-01 00:00:00
abstract::This study compares stationary home measurements with a personal exposure monitor of 60 Hz magnetic fields in a group of 18 people living near a 735 kV line and 17 people living far away from the line. Most of them were white collar workers who worked during the day. They wore a personal Positron meter for 24 h, while...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/(sici)1521-186x(199909)20:6<331::aid-bem1>
更新日期:1999-09-01 00:00:00
abstract::This study deals with the morphofunctional influence of 72 h exposure to a 6 mT static magnetic field (SMF) during differentiation induced by 50 ng/ml 12-O-tetradecanoyl-13-phorbol acetate (TPA) in human leukaemia U937 cells. The cell morphology of U937 cells was investigated by optic and electron microscopy. Specific...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20474
更新日期:2009-07-01 00:00:00
abstract::To be able to correlate real time membrane potential or ion flux changes with further downstream gene transcription responses due to extremely low frequency (ELF) electromagnetic field (EMF) exposure, we devised an experimental system consisting of a pair of symmetric circular coils. This system can be used on an inve...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.10151
更新日期:2004-01-01 00:00:00
abstract::We study the effect of microwaves at 2,450 MHz on protein unfolding using surface plasmon resonance sensing. Our experimental method makes use of the fact that unfolding proteins tend to bind to chaperones on their unfolding pathway and this attachment is readily monitored by surface plasmon resonance. We use the prot...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20382
更新日期:2008-05-01 00:00:00
abstract::In-vitro studies of biological effects of electromagnetic fields are often conducted with cultured cells either in suspension or grown in a monolayer. In the former case, the exposed medium can be assumed to be homogeneous; however, eventually the cells settle to the bottom of the container forming a two layer system ...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250140106
更新日期:1993-01-01 00:00:00
abstract::The present study investigates the effects of a weak (+/-200 microT(pk)), pulsed, extremely low frequency magnetic field (ELF MF) upon the human electroencephalogram (EEG). We have previously determined that exposure to pulsed ELF MFs can affect the EEG, notably the alpha frequency (8-13 Hz) over the occipital-parieta...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20434
更新日期:2009-01-01 00:00:00
abstract::This paper traces the history of the development of the Radiofrequency Radiation Dosimetry Handbook and its subsequent impact on radio frequency radiation exposure standards. The author's recollections are used to illustrate the behind the scenes efforts of the individuals involved in this project. The development of ...
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
abstract::Published and new data for grounded humans, swine, and rats exposed to vertical, 60-Hz electric fields are used to determine field strengths at the surfaces of the bodies and average components of induced-current density along the axes of the bodies. At the tops of the bodies, surface electric fields are increased (en...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250010203
更新日期:1980-01-01 00:00:00
abstract::The aim of the present study was to identify the effects of a static magnetic field (SMF) on rat brain structures that control autonomic functions, specifically heart rate and heart rhythmicity. The experiments were carried out on 44 male Wistar rats under ketamine-xylazine anesthesia. SMF was induced using samarium-c...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.10186
更新日期:2004-04-01 00:00:00
abstract::This paper investigates the effect of relevant physical parameters on transient temperature elevation induced in human tissues by electromagnetic waves in the terahertz (THz) band. The problem is defined by assuming a plane wave, which, during a limited time interval, normally impinges on the surface of a 3-layer mode...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.21842
更新日期:2014-07-01 00:00:00
abstract::An automated blood sampling system was developed for use with tethered baboons (Papio cynocephalus) during concurrent exposure to 60 Hz 30 kV/m electric fields and 0.1 mT (1.0 G) magnetic fields. The system was controlled by a FORTH-based microcomputer, which operated a pump, a fraction collector, and two pinch valves...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250160710
更新日期:1995-01-01 00:00:00
abstract::Effects of short, extremely high power microwave pulses (EHPP) on neuronal network function were explored by electrophysiological techniques in the isolated rat hippocampal slice model. Population spikes (PS) in the CA1 area were evoked by repeated stimulation (1 per 30 s) of the Schaffer collateral pathway. A brief t...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.10079
更新日期:2003-04-01 00:00:00
abstract::The objective of the study was to investigate the influence of humidity on analyzing electric field exposure using extremely low frequency (ELF) electric field measurements. The study included 322 measurements in a climate room. We used two commercial three-axis meters, EFA-3 and EFA-300, and employed two measurement ...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.21776
更新日期:2013-07-01 00:00:00
abstract::This paper presents a theoretical analysis of electromagnetic environments in power substations in service. A new analytical method is developed and applied to magnetic field calculations in 187-kV and 66-kV substations. Experimental results verify that the method offers a good prediction of the magnetic field profile...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250100106
更新日期:1989-01-01 00:00:00
abstract::Data are presented on ankle-specific SARs and foot currents as a function of strengths of radio-frequency electromagnetic fields encountered by operators of dielectric heaters. The determination of foot currents was based on near-field exposures in which reactive coupling dominates, and which can result in substantial...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250130204
更新日期:1992-01-01 00:00:00
abstract::An experimental arrangement is described that maximized the dosimetric information that can be obtained during in vitro studies with ELF magnetic fields. The arrangement enables researchers to distinguish between a purely magnetic-field effect and one that also involves the electric fields and currents induced by the ...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250110306
更新日期:1990-01-01 00:00:00
abstract::Magnetic fields (60 Hz) of 1.5 and 80 microT caused a significant reduction in the weight of Drosophila melanogaster. Moreover, fruit flies in an 80 microT field showed lower developmental stability than either those in a 0 or 1.5 microT field. Developmental instability was measured by fluctuating asymmetry and freque...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:
更新日期:2000-09-01 00:00:00
abstract::The aim of this study was to elucidate the possible effects of short-term exposure to a 1439-MHz electromagnetic field (EMF) employing time division multiple access (TDMA), which is the basis of the Japanese Personal Digital Cellular system, on estrogenic activity in rats. Sixty-four ovariectomized female Sprague-Dawl...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20593
更新日期:2010-10-01 00:00:00
abstract::A number of studies have shown that power frequency magnetic fields may affect spatial memory functions in rodents. An experiment was performed using a spontaneous object recognition task to investigate if nonspatial working memory was similarly affected. Memory changes in adult, male C57BL/6J mice were assessed by me...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/1521-186x(200101)22:1<19::aid-bem3>3.0.co;
更新日期:2001-01-01 00:00:00
abstract::Using a crossover experimental design, we evaluated our earlier findings that exposure to a 30 kV/m, 60 Hz electric field for 12 hours per day, 7 days per week for 6 weeks produced significant changes in the performance rates of social behaviors among young adult male baboons. In the crossover experiment, the former c...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.2250130506
更新日期:1992-01-01 00:00:00
abstract::We used exposure to microwaves from a global system for mobile communication (GSM) mobile phone (915 MHz, specific absorption rate (SAR) 37 mW/kg) and power frequency magnetic field (50 Hz, 15 muT peak value) to investigate the response of lymphocytes from healthy subjects and from persons reporting hypersensitivity t...
journal_title:Bioelectromagnetics
pub_type: 临床试验,杂志文章
doi:10.1002/bem.20103
更新日期:2005-04-01 00:00:00
abstract::The aim of the present study was to investigate the influence of 50 Hz sinusoidal magnetic field on Hsp27, Hsp70, and Hsp90 expression in a model of primary culture of porcine aortic endothelial cells (PAEC). We took into consideration the Hsp profile in terms of mRNA expression, protein expression and protein localiz...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20299
更新日期:2007-04-01 00:00:00
abstract::Possible effects of 1439 MHz electromagnetic near field (EMF) exposure on the blood-brain barrier (BBB) were investigated using immature (4 weeks old) and young (10 weeks old) rats, equivalent in age to the time when the BBB development is completed and the young adult, respectively. Alteration of BBB related genes, s...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/bem.20138
更新日期:2005-10-01 00:00:00
abstract::This study was a meta-analysis to examine whether electrical stimulation has specific effects in the healing of musculoskeletal repair process and in the diminution of symptoms with bone and joint disorders. Using MEDLINE (1966-1999) and EMBASE (1985-1999) a search for articles was carried out with four medical subjec...
journal_title:Bioelectromagnetics
pub_type: 杂志文章,meta分析
doi:10.1002/bem.106
更新日期:2002-02-01 00:00:00
abstract::In studies investigating adverse reproductive outcomes associated with video display terminal (VDT) usage, amounts of time spent in front of a VDT or magnetic field (MF) levels in front of the VDT are used as surrogate measures of subject's MF exposure. However, the relevance of such surrogates to actual exposures has...
journal_title:Bioelectromagnetics
pub_type: 杂志文章
doi:10.1002/(SICI)1521-186X(1996)17:5<406::AID-BEM8>3.
更新日期:1996-01-01 00:00:00