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Showing results for: electromagnetic fields

Mitigation of biofouling using electromagnetic fields in tubular heat exchangers-condensers cooled by seawater.

Research RF Safe Research Library Jan 1, 2014

This paper describes an engineering application of electromagnetic field (EMF) treatment to mitigate biofouling in seawater-cooled tubular heat exchanger-condensers. After allowing a biofilm to stabilize, EMF treatment was applied and was reported to precipitate dissolved ions and contribute to partial…

Sensory transduction of weak electromagnetic fields: role of glutamate neurotransmission mediated by NMDA receptors.

Research RF Safe Research Library Jan 1, 2014

This rat EEG study reports that weak electromagnetic fields elicited evoked potentials in awake animals but not under anesthesia that included ketamine. Xylazine anesthesia did not eliminate EMF-evoked potentials, whereas ketamine (an NMDA receptor antagonist) was associated with absence of both EMF-evoked and…

The alteration of spontaneous low frequency oscillations caused by acute electromagnetic fields exposure.

Research RF Safe Research Library Jan 1, 2014

This double-blind, randomized, crossover study examined whether 30 minutes of near-field LTE radiofrequency exposure near the right ear alters resting-state brain activity measured by fMRI. The authors report decreased ALFF in multiple temporal and frontal/paracentral regions after real exposure compared with sham,…

Symptom attribution and risk perception in individuals with idiopathic environmental intolerance to electromagnetic fields and in the general population.

Research RF Safe Research Library Jan 1, 2014

This cross-sectional study compared EMF-related health perceptions and symptom attribution among self-identified EMF-sensitive individuals from an internet panel, non-sensitive individuals, and an NGO-recruited IEI-EMF group. The internet-panel sensitive group reported more non-specific symptoms, higher perceived EMF…

EMOST: elimination of chronic constipation and diarrhea by low-frequency and intensity electromagnetic fields.

Research RF Safe Research Library Jan 1, 2014

This paper reports routine EMOST (Electro-Magnetic-Own-Signal-Treatment) use with low-frequency, low-intensity electromagnetic fields in two children with chronic constipation and persistent diarrhea. The authors state these conditions were eliminated following treatment. The abstract briefly discusses possible…

Assessing of plasma protein denaturation induced by exposure to cadmium, electromagnetic fields and their combined actions on rat.

Research RF Safe Research Library Jan 1, 2014

This animal study examined whether cadmium, EMF exposure, or their combination affects oxidative damage and protein structure in rat plasma. The authors report increased oxidative protein damage markers and changes in protein-related measures after cadmium and/or EMF exposure. Effects were described as more…

Investigating short-term exposure to electromagnetic fields on reproductive capacity of invertebrates in the field situation.

Research RF Safe Research Library Jan 1, 2014

This field experiment examined short-term (48-hour) exposure to RF EMF from a GSM 900 MHz mobile phone base station on reproductive endpoints in four invertebrate species. The study reports no significant effects of exposure metrics on fecundity or number of offspring, and notes that distance was not a suitable proxy…

Effect of Bluetooth headset and mobile phone electromagnetic fields on the human auditory nerve.

Research RF Safe Research Library Jan 1, 2014

This randomized trial assessed short-term effects of electromagnetic fields from a mobile phone versus a Bluetooth headset on cochlear nerve activity during vestibular neurectomy in 12 patients. Bluetooth headset exposure showed no significant change in CNAP amplitude or latency. Direct mobile phone exposure was…

Whole brain EEG synchronization likelihood modulated by long term evolution electromagnetic fields exposure.

Research RF Safe Research Library Jan 1, 2014

This conference paper examined whether LTE radiofrequency EMF exposure affects whole-brain EEG functional connectivity. Ten participants completed a crossover, double-blind real versus sham exposure protocol with 30 minutes of exposure per session while 32-channel EEG was recorded. Using synchronization likelihood,…

General practitioners' knowledge and concern about electromagnetic fields.

Research RF Safe Research Library Jan 1, 2014

This cross-sectional survey sampled general practitioners in Germany to assess EMF knowledge and its relationship to concern about EMF health risks. Four latent knowledge groups were identified, with 43.1% giving mainly correct answers and 14.0% answering mostly "don't know". Concern was not related to knowledge…

Electromagnetic fields act via activation of voltage-gated calcium channels to produce beneficial or adverse effects

Research RF Safe Research Library Jan 1, 2013

This narrative review argues that non-thermal biological effects of extremely low and microwave frequency EMFs may be mediated by activation of voltage-gated calcium channels (VGCCs). It cites 23 studies in which VGCC blockers reportedly block or reduce diverse EMF effects and proposes downstream…

Effect of puerarin on matrix metalloproteinase-2 in human fetal scleral fibroblasts treated with low frequency electromagnetic fields.

Research RF Safe Research Library Jan 1, 2013

This in vitro study examined whether extremely low frequency electromagnetic field (ELF-EMF) exposure alters MMP-2 expression in cultured human fetal scleral fibroblasts and whether puerarin modifies this response. The authors report increased MMP-2 mRNA and protein expression after 0.2 mT ELF-EMF exposure for 24…

P-selectin expression in a colon tumor model exposed by sinusoidal electromagnetic fields.

Research RF Safe Research Library Jan 1, 2013

This animal study evaluated whether sinusoidal magnetic field exposure alters P-selectin expression in a rat colon tumor model. Rats exposed to 50 Hz, 5 mT for 6 h/day for 8 months showed no statistically significant change in P-selectin expression by immunohistochemistry. The authors indicate that further in vitro…

[Measurement and assessment of electromagnetic fields near radiophones in line with provisions of European Directive 2013/35/EU and Polish labour law].

Research RF Safe Research Library Jan 1, 2013

This exposure assessment measured unperturbed electric fields near antennas of 50 portable radiophones used by rescue and uniformed services. Occupational exposure-level field strengths (per Polish OSH safety-zone criteria) occurred tens of centimeters from antennas, and Directive 2013/35/EU action levels were…

[Objectivized evaluation of surgeons exposure to radiofrequency electromagnetic fields -- in the context of exposure duration and Polish and new international requirements regarding workers protection].

Research RF Safe Research Library Jan 1, 2013

This occupational exposure assessment monitored surgeons during 11 surgeries using monopolar electro surgery units and measured electric and magnetic field strengths during cutting and coagulating modes. Electric fields near the cable at 10 cm were reported in the hundreds of V/m, while magnetic fields were

Are media warnings about the adverse health effects of modern life self-fulfilling? An experimental study on idiopathic environmental intolerance attributed to electromagnetic fields (IEI-EMF).

Research RF Safe Research Library Jan 1, 2013

This randomized experiment tested whether a TV report warning about WiFi health effects could influence symptoms during a subsequent sham WiFi exposure. Over half of participants reported symptoms attributed to the sham exposure, and the warning film increased EMF-related worries. Among participants with higher…

[The problem of participation of different brain regions in the reactions to the low-intensity magnetic and electromagnetic field exposure].

Research RF Safe Research Library Jan 1, 2012

This animal experiment assessed integral and pulsed bioelectric activity across rabbit brain regions during exposure to low-intensity magnetic and electromagnetic fields. The authors report that brain-region participation in CNS reactions varied across exposure parameters and conditions and depended strongly on…

Tunable optical antennas based on metallic nanoshells with nanoknobs.

Research RF Safe Research Library Jan 1, 2012

This engineering study investigates a plasmonic nanostructure composed of a spherical metallic nanoshell with a small metallic nanoparticle (“nanoknob”) on its surface. It reports tunable plasmon resonance behavior driven by nanoshell properties and localized/enhanced electromagnetic fields near the nanoknob under…

Low-frequency electromagnetic fields do not alter responses of inflammatory genes and proteins in human monocytes and immune cell lines.

Research RF Safe Research Library Jan 1, 2012

This in vitro study examined whether low-frequency electromagnetic fields (a complex multiple waveform field and a 50 Hz sine wave) alter inflammatory gene and protein responses in human immune cells. Across time course experiments in THP-1 cells and primary monocytes/macrophages, the authors report no significant…

Peripheral pulsed electromagnetic fields may reduce the placebo effect in migraine patients that do not respond to the sham intervention in a randomized, placebo-controlled, double-blind, cross-over clinical trial.

Research RF Safe Research Library Jan 1, 2012

This randomized, placebo-controlled, double-blind, cross-over trial evaluated a wrist-applied PEMF bracelet in 18 migraine patients and examined possible modulation of placebo effects. In the overall group, both PEMF and placebo were associated with similar reductions in migraine frequency and intensity. The authors…

Hematological and toxicogenomic effects of ferromagnetic screening of natural electromagnetic fields.

Research RF Safe Research Library Jan 1, 2011

This rat study tracked hematological and toxicogenomic aftereffects over 45 days following 2 days of ferromagnetic screening of natural electromagnetic fields. The authors report leukopenia at day 14 and increases in genomic instability markers (aneuploidy and polyploidy) in male leukocytes persisting after screening…

[Time effect of sinusoidal electromagnetic field on enhancing the maturation and mineralization of osteoblasts in vitro].

Research RF Safe Research Library Jan 1, 2011

This in vitro study exposed newborn rat calvarial osteoblasts to 50 Hz sinusoidal electromagnetic fields at 1.8 mT for different daily exposure times (0.5–3.0 h). The authors report inhibited osteoblast proliferation at longer exposure times, alongside increased differentiation markers (ALP activity) and…

Human keratinocytes in culture exhibit no response when exposed to short duration, low amplitude, high frequency (900 MHz) electromagnetic fields in a reverberation chamber.

Research RF Safe Research Library Jan 1, 2011

This in vitro study exposed normal human epidermal keratinocytes to non-thermal 900 MHz electromagnetic fields in a mode-stirred reverberation chamber under two short-duration conditions. Microarray analysis found only limited gene modulation (20 genes) with small expression ratios and no shared genes across…

Effects of low frequency electromagnetic fields on the chondrogenic differentiation of human mesenchymal stem cells.

Research RF Safe Research Library Jan 1, 2011

This in vitro study examined whether extremely low-frequency magnetic fields affect chondrogenic differentiation of human mesenchymal stem cells in pellet culture. Cells exposed for 3 weeks to a homogeneous sinusoidal 5 mT magnetic field showed increased collagen type II expression (significant at passage 6) and…

Electromagnetic fields and DNA damage

Research RF Safe Research Library Jan 1, 2009

This review discusses the comet assay and summarizes research on non-ionizing EMF exposure and DNA/chromosomal damage. It describes both positive and negative findings across studies, noting no consistent overall pattern for radiofrequency radiation (RFR). The authors nonetheless conclude that under certain exposure…

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