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Filters: tag: Magnetic Field Clear

Effects of Extremely Low Frequency Magnetic Field Exposure (50 Hz, 200 µT) on Cell Viability, DNA Damage and Micronucleus Formation of Human Skin Cells.

Research RF Safe Research Library Jan 1, 2026

This in vitro study tested whether 50 Hz extremely low frequency magnetic fields at 200 µT (rms) affect human skin cells (HaCaT). Using blinded, simultaneous exposure and sham-exposure for 2 or 24 hours, the authors assessed cell viability, DNA integrity, and micronucleus formation. The abstract reports no…

Assessment of Electromagnetic Exposure Levels for Humans from Electric Vehicle DC Charging Stations

Research RF Safe Research Library Jan 1, 2025

This simulation study modeled EMF exposure from an electric vehicle DC charging pile transformer using adult and child human models at several distances and for in-vehicle occupants during charging. Reported peak B-field and E-field values at 0.1 m and modeled internal exposures decreased with distance and remained…

Comparison of a radiofrequency electric and magnetic field source-based job-exposure matrix with personal radiofrequency exposure measurements.

Research RF Safe Research Library Jan 1, 2024

This study compared historical occupational RF-EMF exposure estimates from the INTEROCC RF job-exposure matrix (RF-JEM) with recent personal RF-EMF measurements from the OccRF-Health study in two countries. Agreement between the two approaches was poor for both exposure prevalence and 8-hour time-weighted average…

Personal exposure to radiofrequency electromagnetic fields in various occupations in Spain and France.

Research RF Safe Research Library Jan 1, 2023

This study conducted personal full-shift RF-EMF measurements in 333 workers across 46 occupations in Spain and France. Most 1-second measurements of electric and magnetic fields were below the device detection limit (≥1% of 1998 ICNIRP standards), though many workers had at least one detectable reading. A small…

Effects of prolonged exposure to ELF-EMF on HERVs expression in human melanoma cells.

Research RF Safe Research Library Jan 1, 2022

This in vitro study examined whether 96-hour exposure to 50 Hz ELF-EMF affects expression of human endogenous retroviruses (HERV-H, HERV-K, HERV-W) in SK-MEL-37 human melanoma cells. Cells were continuously exposed at 1.5 or 3 mT and HERV env mRNA levels were measured by qPCR. The authors report significant…

Anthropogenic electromagnetic fields (EMF) influence the behaviour of bottom-dwelling marine species.

Research RF Safe Research Library Jan 1, 2020

This animal study examined behavioural responses of American lobster and Little skate to EMF emissions from a subsea HVDC transmission cable. It reports a marked increase in exploratory/foraging behaviour in skates and a subtler exploratory response in lobsters when exposed to cable EMF. The authors also measured…

Effects of electromagnetic field, cisplatin and morphine on cytotoxicity and expression levels of DNA repair genes.

Research RF Safe Research Library Jan 1, 2018

This in vitro study examined how morphine, a 50-Hz 0.50 mT electromagnetic field (intermittent), and cisplatin co-treatments affected DNA repair gene expression and cytotoxicity in MCF-7 and SH-SY5Y cells. Morphine alone was reported to down-regulate examined DNA repair genes, whereas morphine plus EMF did not…

Theta-gamma coupling in hippocampus during working memory deficits induced by low frequency electromagnetic field exposure.

Research RF Safe Research Library Jan 1, 2017

This mouse study examined whether 50 Hz, 1 mT electromagnetic field exposure affects working memory and hippocampal electrophysiology. The authors report reduced Y-maze working memory performance after 3 days of EMF exposure, accompanied by decreased hippocampal firing rates. They also report reduced theta and…

Efficacy of 50 Hz electromagnetic fields on human epidermal stem cell transplantation seeded in collagen sponge scaffolds for wound healing in a murine model.

Research RF Safe Research Library Jan 1, 2017

This animal study evaluated whether 50 Hz EMF exposure enhances wound healing after transplantation of human epidermal stem cells (ESC) seeded in collagen sponge scaffolds. Thirty-six nude mice with full-thickness wounds were assigned to control, ESC-only, or ESC+EMF groups (50 Hz, 5 mT, 60 min/day for 20 days). The…

Measurement and Modeling of Personal Exposure to the Electric and Magnetic Fields in the Vicinity of High Voltage Power Lines.

Research RF Safe Research Library Jan 1, 2016

This study reports experimental measurements and numerical modeling of electric and magnetic fields near a high voltage substation in Annaba, Algeria. Field intensities were measured at multiple heights intended to correspond to sensitive human body regions and were validated using finite element simulations. The…

Near-field radiofrequency electromagnetic exposure assessment

Research RF Safe Research Library Jan 1, 2015

This paper presents a near-field RF exposure assessment method comparing standard SAR estimation from E-field measurements in tissue-simulating liquid with a proposed approach based on incident H-field measurements. Experiments were conducted at 900, 1800, and 2450 MHz using dipole antennas and a flat phantom, with…

[Influence of magnetic field on the growth of pathogen microorganisms isolated from the indoor environment at the Archivo Nacional de la República de Cuba].

Research RF Safe Research Library Jan 1, 2015

This in vitro study exposed five microorganisms (including indoor isolates and reference strains) to an extremely low frequency magnetic field (60 Hz, 3 mT) for two hours. The authors report a statistically significant increase in colony counts in exposed samples versus controls, with stronger stimulation in nutrient…

Effect of ELF-EMF Exposure on Human Neuroblastoma Cell Line: a Proteomics Analysis

Research RF Safe Research Library Jan 1, 2014

This in vitro study exposed SH-SY5Y human neuroblastoma cells to a 2 mT, 50 Hz magnetic field for 3 hours and assessed protein expression using proteomics. The authors report that 189 proteins changed expression in exposed cells compared with controls, with PCA/clustering separating samples by condition. They…

Biaxiality-induced magnetic field effects in bent-core nematics: molecular-field and Landau theory.

Research RF Safe Research Library Jan 1, 2013

This paper theoretically investigates magnetic-field-induced phenomena in bent-core nematic liquid crystals, focusing on how molecular biaxiality modifies the response. Using molecular field and Landau theory, it reproduces reported experimental trends such as an enhanced Cotton-Mouton effect and an increase in the…

A mm-sized wirelessly powered and remotely controlled locomotive implant.

Research RF Safe Research Library Jan 1, 2012

This engineering paper describes a mm-scale implantable device that is wirelessly powered and remotely controlled to locomote in a fluid medium. The prototype is reported to receive 500 µW from a 2 W, 1.86 GHz RF power signal at 5 cm and to support 2.5–25 Mbps data rates using asynchronous PWM on the carrier. The…

Non-Markovian stationary probability density for a harmonic oscillator in an electromagnetic field.

Research RF Safe Research Library Jan 1, 2012

This paper presents a theoretical calculation of the stationary probability density for a harmonic oscillator embedded in an electromagnetic field by solving the Fokker-Planck equation exactly. The magnetic field is treated as constant, while the electric field is modeled as an external stochastic force with…

Influence of magnetic field on aqueous two-phase extraction of horse ferritin in the polyethylene glycol/hydroxyethyl starch system.

Research RF Safe Research Library Jan 1, 2012

This study reports an aqueous two-phase extraction method for equine spleen ferritin using polyethylene glycol (PEG) and hydroxyethyl starch (HES). Ferritin partitioning depended on PEG/HES concentrations and PEG molecular weight, and applying a magnetic field increased ferritin accumulation in the PEG-rich phase…

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…

Electronic properties of a graphene antidot in magnetic fields.

Research RF Safe Research Library Jan 1, 2010

This paper describes unusual electronic properties of a graphene antidot created by a piecewise constant potential in a magnetic field. It reports near-complete localization of electron probability within the barrier region under some conditions and a symmetry linking antidot and dot states with identical…

Two-dimensional electron states bound to an off-plane donor in a magnetic field.

Research RF Safe Research Library Jan 1, 2010

A theoretical analysis is presented of electron states in a two-dimensional plane bound to an off-plane donor impurity under a magnetic field. The authors calculate energy levels (ground and first three excited states) variationally and report binding energies and mean orbital radii as functions of donor position and…

The modulation of the de Haas-van Alphen effect in graphene by electric field.

Research RF Safe Research Library Jan 1, 2010

This theoretical/physics paper examines how an in-plane uniform electric field affects the de Haas-van Alphen (dHvA) effect in graphene. It reports that magnetization, magnetic susceptibility, and dHvA oscillation behavior depend on a dimensionless parameter β = E/(vF B), with divergences described at a critical…

Ising spin-glass transition in a magnetic field outside the limit of validity of mean-field theory.

Research RF Safe Research Library Jan 1, 2009

This paper studies the spin-glass transition in a magnetic field using a diluted one-dimensional long-range Ising model with distance-dependent bond probability. The authors report evidence for a spin-glass transition in a magnetic field both within and beyond the mean-field regime. They also report such evidence for…

Quasiparticles of spatially anisotropic triangular antiferromagnets in a magnetic field.

Research RF Safe Research Library Jan 1, 2009

This theoretical/physics study investigates spectral properties of a spin-1/2 Heisenberg antiferromagnet on an anisotropic triangular lattice in a magnetic field. It reports that interchain interactions in a magnetic field generate dominant modes that behave as quasiparticles, featuring anomalous incommensurate…

Magnetic field switching between the two orbital-ordered states in DyVO3.

Research RF Safe Research Library Jan 1, 2007

This Physical Review Letters study investigates phase competition between spin- and orbital-ordered states in a DyVO3 single crystal. The abstract reports reentrant temperature-driven transitions in spin ordering and orbital ordering. It also reports that an applied magnetic field can switch between orbital-ordered…

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