Power variations of wireless communication systems.

abstract：:Radio-frequency electromagnetic radiation (RFR) at 915 and 147 MHz, when sinusoidally amplitude modulated (AM) at 16 Hz, has been shown to enhance release of calcium ions from neuroblastoma cells in culture. The dose-response relation is unusual, consisting of two power-density "windows" in which enhanced efflux occur...

journal_title：Bioelectromagnetics

authors： Dutta SK,Das K,Ghosh B,Blackman CF

更新日期：1992-01-01 00:00:00

abstract：:The possible effects of repeated night-time exposure to an extremely low frequency magnetic field (ELF-MF) on melatonin were investigated in nine healthy male subjects aged 23-37 yr. The 16-week experiment consisted of 3 weeks of pre-exposure, 11 weeks of night-time exposure to MF generated from a nonheated electric s...

journal_title：Bioelectromagnetics

authors： Hong SC,Kurokawa Y,Kabuto M,Ohtsuka R

更新日期：2001-02-01 00:00:00

abstract：:Sixteen pregnant Holstein heifers weighing 521 +/- 46 kg, at 3.3 +/- 0.7 months of gestation and 2.2 +/- 2.0 months of age were confined to wooden metabolism cages and were exposed to a vertical electric field (EF) of 10.0 +/- 0.4 kV/m and an artificial light cycle of 12 h light-12 h dark. The heifers were divided int...

journal_title：Bioelectromagnetics

authors： Burchard JF,Nguyen DH,Monardes HG,Petitclerc D

更新日期：2004-05-01 00:00:00

abstract：:Electromagnetic sensibility refers to the ability to perceive the electromagnetic field (EMF) without necessarily developing health symptoms attributed to EMF exposure. A large sample of young healthy adults (n = 84) performed two forced-choice tasks on the perception of the GSM mobile phone EMF (902 MHz pulsed at 217...

journal_title：Bioelectromagnetics

authors： Kwon MS,Koivisto M,Laine M,Hämäläinen H

更新日期：2008-02-01 00:00:00

abstract：:The main purpose of this study is to investigate potential responses of skin cells to millimeter wave (MMW) radiation increasingly used in the wireless technologies. Primary human skin cells were exposed for 1, 6, or 24 h to 60.4 GHz with an average incident power density of 1.8 mW/cm(2) and an average specific absorp...

journal_title：Bioelectromagnetics

authors： Le Quément C,Nicolas Nicolaz C,Zhadobov M,Desmots F,Sauleau R,Aubry M,Michel D,Le Dréan Y

更新日期：2012-02-01 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

authors： Belyaev IY,Hillert L,Protopopova M,Tamm C,Malmgren LO,Persson BR,Selivanova G,Harms-Ringdahl M

更新日期：2005-04-01 00:00:00

abstract：:Non-thermal plasmas can be generated by electric discharges in gases. These plasmas are reactive media, capable of superficial treatment of various materials. A novel non-thermal atmospheric plasma source (plasma needle) has been developed and tested. Plasma appears at the end of a metal pin as a submillimetre glow. W...

journal_title：Bioelectromagnetics

authors： Kieft IE,Broers JL,Caubet-Hilloutou V,Slaaf DW,Ramaekers FC,Stoffels E

更新日期：2004-07-01 00:00:00

abstract：:Several effects of power-frequency (50/60 Hz) magnetic fields (PF-MF) of weak intensity have been hypothesized in animals and humans. No valid mechanism, however, has been proposed for an interaction between PF-MF and biological tissues and living beings at intensities relevant to animal and human exposure. Here we pr...

journal_title：Bioelectromagnetics

authors： Vanderstraeten J,Gillis P

更新日期：2010-07-01 00:00:00

abstract：:Effects of magnetic fields (MFs) on the activities of antioxidant enzymes of suspension-cultured tobacco cells were investigated. Compared with the control cells, exposure of the cells to static MF with the magnitudes of 10 and 30 mT for 5 days, 5 h each day, increased the activity of superoxide dismutase (SOD). In co...

journal_title：Bioelectromagnetics

authors： Sahebjamei H,Abdolmaleki P,Ghanati F

更新日期：2007-01-01 00:00:00

abstract：:The aim of this study was to determine a current density threshold for exciting the motor cortex area of the brain. The current density threshold for excitation of nerve fibres (20 microm in diameter) found in the literature is approximately 1 A/m(2) at frequencies lower than 1 kHz. In consideration of a safety factor...

journal_title：Bioelectromagnetics

authors： Kowalski T,Silny J,Buchner H

更新日期：2002-09-01 00:00:00

abstract：:In the last few years, significant developments have taken place in the field of Wireless Local Area Networks (WLAN), and the popularity of portable devices supporting Wireless Fidelity (Wi-Fi) is continuously growing. At the same time, the number of Active Implanted Medical Devices (AIMD) being placed in patients is ...

journal_title：Bioelectromagnetics

authors： Parazzini M,Sibella F,Paglialonga A,Ravazzani P

更新日期：2010-10-01 00:00:00

abstract：:Rat PC12 pheochromocytoma cells have been treated with nerve growth factor and then exposed to athermal levels of a packet-modulated radiofrequency field at 836.55 MHz. This signal was produced by a prototype time-domain multiple-access (TDMA) transmitter that conforms to the North American digital cellular telephone ...

journal_title：Bioelectromagnetics

authors： Ivaschuk OI,Jones RA,Ishida-Jones T,Haggren W,Adey WR,Phillips JL

更新日期：1997-01-01 00:00:00

abstract：:International bodies such as International Commission on Non-Ionizing Radiation Protection (ICNIRP) and the Institute for Electrical and Electronic Engineering (IEEE) make provision for human exposure assessment based on SAR calculations (or measurements) and basic restrictions. In the case of base station exposure th...

journal_title：Bioelectromagnetics

authors： van Wyk MJ,Bingle M,Meyer FJ

更新日期：2005-09-01 00:00:00

abstract：:This study analyzes if an external magnetic stimulus (2 kHz and approximately 0.1 μT applied near frontal cortex) influences working memory, perception, binary decision, motor execution, and sustained attention in humans. A magnetic stimulus and a sham stimulus were applied to both sides of the head (frontal cortex cl...

journal_title：Bioelectromagnetics

authors： Navarro EA,Gomez-Perretta C,Montes F

更新日期：2016-01-01 00:00:00

abstract：:The temperature distribution inside a lossy sphere resulting from the absorption of microwave energy was approximated by successive numerical iterations. of the thermal energy equation. Heat transfer within the sphere by conduction was considered. In the model energy was not dissipated by convection but was contained ...

journal_title：Bioelectromagnetics

authors： Janna WS,Russo EP,McAfee R,Davoudi RM

更新日期：1980-01-01 00:00:00

abstract：:To investigate the ability of prokaryotic microorganisms to activate strategies in adapting themselves to the environmental stress induced by exposure to extremely low frequency electromagnetic fields (ELF-EMF), cultures of Escherichia coli ATCC 700926 exposed at 50 Hz EMF (0.1, 0.5, 1.0 mT), and the respective sham-e...

journal_title：Bioelectromagnetics

authors： Cellini L,Grande R,Di Campli E,Di Bartolomeo S,Di Giulio M,Robuffo I,Trubiani O,Mariggiò MA

更新日期：2008-05-01 00:00:00

abstract：:In the present experiment, the effect of a single 30 min inhomogeneous static magnetic field (SMF) exposure on thermal pain threshold (TPT) was examined in 15 young healthy human volunteers. The SMF had a maximum peak-to-peak amplitude of 330 mT with a maximum gradient of 13.2 T/m. In either of two experimental sessio...

journal_title：Bioelectromagnetics

authors： Kovács-Bálint Z,Csathó A,László JF,Juhász P,Hernádi I

更新日期：2011-02-01 00:00:00

abstract：:Both eyes of anesthetized cynomolgus monkeys (Macaca fascicularis) were irradiated with 2.45-GHz microwaves, either pulsed or continuous wave. In vivo corneal endothelial abnormalities were observed by specular microscopy and confirmed through histologic techniques after a 16- to 48-hour postexposure period. Pulsed mi...

journal_title：Bioelectromagnetics

authors： Kues HA,Hirst LW,Lutty GA,D'Anna SA,Dunkelberger GR

更新日期：1985-01-01 00:00:00

abstract：:Composition and content of lipids were studied in leaves of red perilla plants (Perilla nankinensis [Lour.] Decne.) grown in weak permanent horizontal magnetic field (PMF) of 500 µT flux density under controlled illumination, temperature, and humidity in the phytothron chamber. Control plants were grown under similar ...

journal_title：Bioelectromagnetics

authors： Novitskii Y,Novitskaya G,Serdyukov Y

更新日期：2016-02-01 00:00:00

abstract：:Adair [Bioelectromagnetics 14:1-4, 1993] writes that "the effects of 60 Hz magnetic fields of 5 microT (50 mG) or less on biological structures holding magnetite (Fe3O4) are shown to be much smaller than those from thermal agitation; hence such interactions cannot be expected to be biologically significant." This conc...

journal_title：Bioelectromagnetics

authors： Polk C

更新日期：1994-01-01 00:00:00

abstract：:We developed a new computer wire coding method and then applied it to investigate the suggestion that control selection bias might explain the observed association between wire codes and childhood cancer made in the study conducted by Savitz et al. in the Denver area. The computer wire coding method used a geographic ...

journal_title：Bioelectromagnetics

authors： Ebi KL,Kheifets LI,Pearson RL,Wachtel H

更新日期：2000-07-01 00:00:00

abstract：:This study was undertaken to investigate whether power frequency magnetic fields can affect the kinetics of cell cycle progression in exposed human cells. To achieve this, cultures of normal human fibroblasts were synchronised in the G(0) phase of the cell cycle and exposed to 50 Hz magnetic fields at a range of flux ...

journal_title：Bioelectromagnetics

authors： Cridland NA,Haylock RG,Saunders RD

更新日期：1999-10-01 00:00:00

abstract：:Electric fields, which were equivalent to those generated by medical devices, were applied to cultured neuroblastoma cells (mouse and human) to test for morphological damage and to establish damage thresholds. Each of two methods of applying fields permitted flow of electrical current and minimized exposure of cells t...

journal_title：Bioelectromagnetics

authors： Krauthamer V,Bekken M,Horowitz JL

更新日期：1991-01-01 00:00:00

abstract：:Ten experiments on pigs were performed to investigate possible postmortem changes of the dielectric properties of brain gray matter in the frequency range of 800-1900 MHz. After keeping the animals in stable anaesthesia for at least 45 min, they were euthanatised by an intravenous injection of hypertonic potassium chl...

journal_title：Bioelectromagnetics

authors： Schmid G,Neubauer G,Illievich UM,Alesch F

更新日期：2003-09-01 00:00:00

abstract：:To evaluate duration- and dose-dependent effects of continuous exposure to a 60 Hz magnetic field (MF) on the testes in mice, BALB/c male mice were exposed to a 60 Hz MF at 100 μT for 24 h a day for 2, 4, 6, or 8 weeks, and at 2, 20, or 200 μT for 24 h a day for 8 weeks. Any exposures to MF did not significantly affec...

journal_title：Bioelectromagnetics

authors： Kim HS,Park BJ,Jang HJ,Ipper NS,Kim SH,Kim YJ,Jeon SH,Lee KS,Lee SK,Kim N,Ju YJ,Gimm YM,Kim YW

更新日期：2014-02-01 00:00:00

abstract：:In a previous study, we showed that operators of radiofrequency (RF) plastic sealers, RF operators (n = 35) had a lower heart rate during nighttime compared to a control group (n = 37). We have analyzed the heart rate variability (HRV) on the same group of people to better understand the possible underlying rhythm dis...

journal_title：Bioelectromagnetics

authors： Wilén J,Wiklund U,Hörnsten R,Sandström M

更新日期：2007-01-01 00:00:00

abstract：:In this study, we aimed to clarify the effects of chronically applied static magnetic field (200 Gauss) on specific ATPase activities and bioelectrical and biomechanical responses in isolated rat diaphragm muscle. The mean activities of Na(+)-K+ ATPase and Ca2+ ATPase determined from the diaphragm homogenates were sig...

journal_title：Bioelectromagnetics

authors： Iteğin M,Günay I,Loğoğlu G,Isbir T

更新日期：1995-01-01 00:00:00

abstract：:Exposures to radiofrequency (RF) energy above 6 GHz are characterized by shallow energy penetration, typically limited to the skin, but the subsequent increase in skin temperature is largely determined by heat transport in subcutaneous layers. A detailed analysis of the energy reflection, absorption, and power density...

journal_title：Bioelectromagnetics

authors： Ziskin MC,Alekseev SI,Foster KR,Balzano Q

更新日期：2018-04-01 00:00:00

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 ...

journal_title：Bioelectromagnetics

authors： Weil CM,Spiegel RJ,Joines WT

更新日期：1984-01-01 00:00:00

abstract：:The objective of this study was to investigate if persons with implantable medical devices are intrinsically protected by the current electromagnetic safety guidelines. For inter-laboratory comparisons, the U.S. Food and Drug Administration has defined a generic implant as consisting of an insulated wire with noninsul...

journal_title：Bioelectromagnetics

authors： Kyriakou A,Christ A,Neufeld E,Kuster N

更新日期：2012-07-01 00:00:00