Archive

97 posts

Showing results for: SCE

Modelling and Evaluation of the Absorption of the 866 MHz Electromagnetic Field in Humans Exposed near to Fixed I-RFID Readers Used in Medical RTLS or to Monitor PPE.

Research RF Safe Research Library Jan 1, 2021

This study modelled SAR in humans near fixed multi-antenna UHF RFID readers operating at 866 MHz, representing RTLS and PPE-monitoring use scenarios. The modelling suggests that at 5 cm distance, SAR may warrant consideration against international exposure limits aimed at preventing thermal effects when effective…

Exposure to long-term evolution radiofrequency electromagnetic fields decreases neuroblastoma cell proliferation via Akt/mTOR-mediated cellular senescence.

Research RF Safe Research Library Jan 1, 2021

This in vitro study examined LTE RF-EMF exposure effects on SH-SY5Y neuroblastoma cells. The authors report reduced cell proliferation and a G0/G1 cell-cycle delay after 1760 MHz exposure at 4 W/kg for 4 hr/day over 4 days. They report no marked DNA damage signal (γH2AX) and no apoptosis activation, but increased…

Activation of matrix metalloproteinases and FoxO3a in HaCaT keratinocytes by radiofrequency electromagnetic field exposure.

Research RF Safe Research Library Jan 1, 2021

This in vitro study exposed HaCaT human keratinocytes to 1760 MHz RF-EMF (SAR 4.0 W/kg; 2 h/day for 4 days). The authors report increased intracellular ROS and increased expression/activity of several matrix metalloproteinases, along with increased phosphorylation of FoxO3a and ERK1/2. Cell growth/viability and…

[Cell Phones, Radio Frequencies (RF) and Health: IARC classification and epidemiological updates].

Research RF Safe Research Library Jan 1, 2020

This narrative review synthesizes evidence up to September 2019 on health risks from radiofrequency exposure emitted by mobile phones, in the context of IARC's 2013 Group 2B classification. The authors report that the literature does not show a clear risk profile and cannot definitively confirm or refute a health…

Supervised Machine Learning Algorithms for Bioelectromagnetics: Prediction Models and Feature Selection Techniques Using Data from Weak Radiofrequency Radiation Effect on Human and Animals Cells.

Research RF Safe Research Library Jan 1, 2020

This paper develops supervised machine-learning prediction models to analyze potential impacts of weak RF-EMF on human and animal cells using extracted laboratory experimental data from prior publications. Data from 300 peer-reviewed papers (1127 experimental case studies) were used with feature selection and…

An Evaluation of Electromagnetic Exposure While Using Ultra-High Frequency Radiofrequency Identification (UHF RFID) Guns.

Research RF Safe Research Library Jan 1, 2019

This study simulated SAR from handheld UHF RFID readers (“RFID guns”) in adult male and female models across seven close-proximity scenarios involving an operator, scanned person, or bystander. SAR was reported to comply with general public limits at emissions up to 1 W, but higher-power devices (>2 W, and especially…

Electromagnetic Energy Absorption in a Head Approaching a Radiofrequency Identification (RFID) Reader Operating at 13.56 MHz in Users of Hearing Implants Versus Non-Users.

Research RF Safe Research Library Jan 1, 2019

This modeling study estimated SAR in a head approaching a 13.56 MHz RFID HF reader, comparing hearing-implant users with non-users. The abstract reports that BAHA implants can increase localized SAR (10 g) versus non-users, up to 2.1× in a worst-case scenario, and that this increase is statistically higher than for…

Low-frequency electromagnetic fields as an alternative to sanitize water of drinking systems in poultry production?

Research RF Safe Research Library Jan 1, 2019

This study tested pulsed low-frequency electromagnetic fields (up to 10,000 Hz; max 21 mT) as a potential alternative sanitation approach for poultry drinking water systems. LF-EMF exposure was linked to variable changes in culturable bacterial counts, with direction depending on system type and some early…

Altered morphology and biochemistry of the female rat liver following 900 megahertz electromagnetic field exposure during mid to late adolescence.

Research RF Safe Research Library Jan 1, 2019

This animal study examined whether 900 MHz EMF exposure during mid to late adolescence affects the liver in female rats. Compared with control and sham groups, the exposed group showed occasional liver histopathological irregularities. The exposed group also had significantly decreased 8-OHdG and SOD levels, and the…

Evaluation of effect of high frequency electromagnetic field on growth and antibiotic sensitivity of bacteria.

Research RF Safe Research Library Jan 1, 2018

This in vitro study evaluated whether high-frequency electromagnetic fields at 900 and 1800 MHz affect bacterial DNA, growth, and antibiotic susceptibility after 2 hours of exposure. The authors report no detectable DNA differences between exposed and non-exposed bacteria for the species described. Growth and…

Assessment of an anti-scale low-frequency electromagnetic field device on drinking water biofilms.

Research RF Safe Research Library Jan 1, 2018

This laboratory study tested a low-intensity very low-frequency EMF anti-scale device for potential impacts on drinking water biofilms in flow-through reactors. Across soft and hard water and for nascent and mature biofilms, the EMF exposure did not significantly change biofilm cell numbers, cell integrity measures,…

Effects of 900-MHz electromagnetic fields exposure throughout middle/late adolescence on the kidney morphology and biochemistry of the female rat.

Research RF Safe Research Library Jan 1, 2018

This animal study examined kidney effects in female rats exposed to continuous 900 MHz EMF for 1 hour daily during postnatal days 35–59. The authors report multiple histopathological alterations in kidneys of the EMF-exposed group, while control and sham groups showed no pathology. TOS and OSI were reported to be…

Low frequency electromagnetic field decreases ischemia-reperfusion injury of human cardiomyocytes and supports their metabolic function.

Research RF Safe Research Library Jan 1, 2018

This in vitro study tested whether extremely low frequency/low frequency electromagnetic field (LF-EMF) exposure modifies ischemia-reperfusion injury in human cardiac-related cell types. Using LDH and MMP-2 activities and fluorescein diacetate staining, the authors report that short courses of LF-EMF reduced cellular…

SAR thresholds for electromagnetic exposure using functional thermal dose limits.

Research RF Safe Research Library Jan 1, 2018

This paper analyzes how conservative current localized RF EMF SAR basic restrictions may be by estimating the implied safety factor. The authors derive thermal dose–functional SAR limits from literature-reported thresholds for acute local tissue damage and compare these to existing basic restrictions. They report…

Continuous 900-megahertz electromagnetic field applied in middle and late-adolescence causes qualitative and quantitative changes in the ovarian morphology, tissue and blood biochemistry of the rat.

Research RF Safe Research Library Jan 1, 2018

This animal study exposed adolescent female rats to a 900-MHz electromagnetic field for 1 hour per day from postnatal days 35 to 59 and assessed ovarian histology and biochemical markers. The EMF group showed multiple histopathological changes in ovarian tissue and had fewer secondary follicles than the other groups.…

Mitigation measures of electromagnetic field exposure in the vicinity of high frequency welders.

Research RF Safe Research Library Jan 1, 2017

This paper describes in situ EMF measurements around industrial high frequency (dielectric) welders, framed by Polish labor safety regulations aligned with EU Directive 2013/35/EU. It reports real-world scenarios where excessive EMF exposure can occur near welders, often linked to errors or omissions during…

Rat adipose-derived mesenchymal stem cells aging reduction by zinc sulfate under extremely low frequency electromagnetic field exposure is associated with increased telomerase reverse transcriptase gene expression.

Research RF Safe Research Library Jan 1, 2017

This in vitro study exposed rat adipose-derived mesenchymal stem cells to 50 Hz, 20 mT ELF-EMF for 30 minutes per day over 21 days, with and without zinc sulfate. The authors report ELF-EMF exposure decreased TERT gene expression and increased senescent cells. Zinc sulfate was reported to increase TERT expression and…

Different profiles of the mRNA levels of DNA repair genes in MCF-7 and SH-SY5Y cells after treatment with combination of cisplatin, 50-Hz electromagnetic field and bleomycin.

Research RF Safe Research Library Jan 1, 2017

This in vitro study examined whether a 50-Hz, 0.50 mT intermittent electromagnetic field modifies responses to cisplatin and bleomycin in MCF-7 and SH-SY5Y cells. The authors report increased susceptibility in MCF-7 cells with EMF added to cisplatin+bleomycin, while SH-SY5Y susceptibility was unchanged. They also…

Electromagnetic Field Assessment as a Smart City Service: The SmartSantander Use-Case.

Research RF Safe Research Library Jan 1, 2017

The study presents a smart city service for electromagnetic field assessment using deployed measuring probes integrated into a city platform. Data collected for more than one year are processed to characterize E-field levels across large areas and over time. The authors report that the results validate the…

Evaluation of the Effect of Radiofrequency Radiation Emitted From Wi-Fi Router and Mobile Phone Simulator on the Antibacterial Susceptibility of Pathogenic Bacteria and .

Research RF Safe Research Library Jan 1, 2017

This in vitro study assessed whether RF-EMF exposure from a GSM 900 MHz mobile phone simulator and a 2.4 GHz Wi-Fi router alters bacterial susceptibility to antibiotics. The authors report significant changes in inhibition zone diameters and bacterial growth rate after exposure. They also describe an exposure window…

The effects of human height and mass on the calculated induced electric fields at 50 Hz for comparison with the EMF Directive 2013/35/EU.

Research RF Safe Research Library Jan 1, 2017

This computational study examined how human height and mass influence calculated induced electric fields in the body from external 50 Hz electric and magnetic fields. Anatomically realistic human models derived from the MAXWEL phantom were varied across a range of heights and masses and used to simulate induced…

Epitaxy of the bound water phase on hydrophilic surfaces of biopolymers as key mechanism of microwave radiation effects on living objects.

Research RF Safe Research Library Jan 1, 2017

This study examined proposed mechanisms of microwave radiation effects using a bacterial culture and a sterile growth medium, focusing on a sensor bioluminescence system. The authors report irradiation-related changes in UV spectral properties (200–350 nm), luminescence, NMR relaxation parameters, bacterial growth,…

Investigation of Electric Field-Induced Structural Changes at Fe-Doped SrTiO₃ Anode Interfaces by Second Harmonic Generation.

Research RF Safe Research Library Jan 1, 2016

This materials study used optical second harmonic generation to detect electric field-induced structural changes at Pt/Fe-doped SrTiO3 anode interfaces. Reduced crystals showed steadily increasing susceptibility with increasing negative voltage, interpreted as electrostriction-related bond distortions. Oxidized…

Memory performance, wireless communication and exposure to radiofrequency electromagnetic fields: A prospective cohort study in adolescents

Research RF Safe Research Library Jan 1, 2015

This prospective cohort study followed 439 adolescents for one year to assess whether wireless device use and estimated RF-EMF dose were associated with changes in memory performance. Higher cumulative mobile phone call duration and higher modeled RF-EMF brain and whole-body dose were associated with decreases in…

The role of the location of personal exposimeters on the human body in their use for assessing exposure to the electromagnetic field in the radiofrequency range 98-2450 MHz and compliance analysis: evaluation by virtual measurements

Research RF Safe Research Library Jan 1, 2015

This study used numerical modeling with a human body model to evaluate how the placement of a single body-worn personal exposimeter affects RF electric-field measurements in the 98–2450 MHz range. Across 256 simulated exposure scenarios, the body substantially altered measured values compared with the unperturbed…

← Prev Page 3 / 4 Next →