Enhanced liver fibrosis (ELF) test in obese children with ultrasound-proven liver steatosis.
Research
RF Safe Research Library
Jan 1, 2015
This cross-sectional study evaluated the Enhanced Liver Fibrosis (ELF) test in 58 obese children stratified by ultrasound evidence of liver steatosis. Children with steatosis had higher liver enzymes and a higher ELF value than those with normal ultrasound findings. Despite these differences, the authors report that…
[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…
Using mobile phones and social media to facilitate education and support for rural-based midwives in South Africa.
Research
RF Safe Research Library
Jan 1, 2015
This cross-sectional survey assessed how rural-based advanced midwives in South Africa perceive and use mobile phones for education and professional activities. Among 56 respondents, most reported frequent use of mobile phone functions to support work and learning despite low self-rated technology competence and…
Correlates of mobile phone use in HIV care: Results from a cross-sectional study in South Africa.
Research
RF Safe Research Library
Jan 1, 2015
This cross-sectional study surveyed 883 HIV-infected patients on ART in Soweto, South Africa, to identify demographic correlates of using mobile phones as reminder tools. Older age, female gender, and lower education were associated with lower use of phones for clinic appointment reminders. Older age and lower income…
Prevalence and correlates of cell phone use among Texas drivers.
Research
RF Safe Research Library
Jan 1, 2015
This observational study measured the prevalence of cell phone use among 1,280 drivers in six Texas cities from 2011–2013. Any cell phone use while driving was observed in 18.7% of drivers, with talking tending to decline and texting seeming to increase over time. Use was more common among female drivers, drivers…
[Influence of Low-Frequency Electromagnetic Field on DNA Molecules in Water Solutions].
Research
RF Safe Research Library
Jan 1, 2015
This in vitro study reports that hepatitis B and C virus DNA amplicons in water solutions produced a chemiluminescence-registered signal after exposure to low-frequency electromagnetic fields (3–30 Hz; 24–40 A/m). The strongest reported effect occurred at 9 Hz, alongside an observed change in the DNA hydration shell.…
Thick multilayered (silica/gold) dipole nano-antenna.
Research
RF Safe Research Library
Jan 1, 2015
This engineering study examines composite optical dipole nano-antennas made of alternating silica and gold layers. It reports that a 50% filling factor yields a 2.0× increase in electric-field enhancement compared with a pure-gold antenna. The abstract frames the work in terms of photonics applications rather than…
The effect of electromagnetic radiation emitted by display screens on cell oxygen metabolism - in vitro studies.
Research
RF Safe Research Library
Jan 1, 2015
This in vitro study exposed human blood platelet suspensions to 1 kHz electromagnetic fields at 150 or 220 V/m for 30 or 60 minutes. The authors report increased ROS and MDA (at 220 V/m, 30 min) and decreased antioxidant enzyme activities (SOD-1 and catalase), with the largest changes at 220 V/m for 60 minutes. They…
New hybrid frequency reuse method for packet loss minimization in LTE network.
Research
RF Safe Research Library
Jan 1, 2015
This engineering study addresses inter-cell interference in LTE networks as a driver of packet loss between base stations and mobile stations. It examines Soft Frequency Reuse (SFR) and implements a new hybrid frequency reuse method with greater total system bandwidth than SFR while keeping per-cell bandwidth the…
In Vivo Wireless Monitoring System of Cardiovascular Force Data.
Research
RF Safe Research Library
Jan 1, 2015
This paper describes development of a fully implantable biotelemetry system that wirelessly transmits cardiac biomechanical force data along with ECG. The system uses a microcontroller with a bidirectional RF transceiver and was tested in a porcine model. The authors report successful transmission and recording of…
Visualizing radiofrequency lesions using delayed-enhancement magnetic resonance imaging in patients with atrial fibrillation: A modification of the method used by the University of Utah group.
Research
RF Safe Research Library
Jan 1, 2015
This feasibility study evaluated whether delayed-enhancement MRI (DE-MRI) using commercially available tools could visualize radiofrequency ablation lesions in Japanese patients with atrial fibrillation. Of 15 scans, 3 were uninterpretable due to low image quality, and lesions were visualized in 8 of the remaining 12…
Gamma radiation and magnetic field mediated delay in effect of accelerated ageing of soybean.
Research
RF Safe Research Library
Jan 1, 2015
This study evaluated gamma radiation and static magnetic field treatments on soybean seeds stored for six months and then subjected to accelerated ageing. The authors report that certain gamma doses (3–5 kGy) and magnetic field strengths (100–200 mT) helped maintain seed protein/oil characteristics and antioxidant…
Analysis of DPPH inhibition and structure change of corn peptides treated by pulsed electric field technology.
Research
RF Safe Research Library
Jan 1, 2015
This laboratory study evaluated how pulsed electric field (PEF) processing affects antioxidant activity and structure of 10–30 kDa corn peptides. Antioxidant activity was assessed via DPPH inhibition and optimized using response surface methodology. Under reported optimal conditions (10 mg/mL, 15 kV/cm, 2,000 Hz),…
The effect of exposure of rats during prenatal period to radiation spreading from mobile phones on renal development.
Research
RF Safe Research Library
Jan 1, 2015
This animal study exposed pregnant Sprague-Dawley rats to a 900 MHz electromagnetic field during the first 20 days of pregnancy and assessed prenatal renal development. The exposed group showed reported histopathological kidney changes and increased caspase-3 staining suggestive of higher apoptosis compared with…
Effect of marination in gravy on the radio frequency and microwave processing properties of beef.
Research
RF Safe Research Library
Jan 1, 2015
This engineering/food science study measured dielectric constant (ε'), dielectric loss factor (ε″), and power penetration depth in beef and gravy preparations across 27–1,800 MHz and 20–130 °C. The dielectric properties generally decreased with increasing frequency, and penetration depth decreased with increasing…
Electromagnetic fields counteract IL-1β activity during chondrogenesis of bovine mesenchymal stem cells.
Research
RF Safe Research Library
Jan 1, 2015
This in vitro study examined whether electromagnetic fields (EMFs) influence chondrogenic differentiation of bovine mesenchymal stem cell pellets, with and without the inflammatory cytokine IL-1β. The authors report EMFs had limited effects on chondrogenesis in the absence of inflammation, but in the presence of…
The effects of different intensities, frequencies and exposure times of extremely low-frequency electromagnetic fields on the growth of Staphylococcus aureus and Escherichia coli O157:H7.
Research
RF Safe Research Library
Jan 1, 2015
This in vitro study examined whether extremely low-frequency electromagnetic fields (ELF-EMF) affect growth of Staphylococcus aureus and Escherichia coli O157:H7. Bacterial cultures were exposed to sinusoidal homogeneous ELF-EMF at 2 or 4 mT, with frequencies of 20, 40, or 50 Hz, for 1–6 hours, and CFU were compared…
Electromagnetic fields (UHF) increase voltage sensitivity of membrane ion channels; possible indication of cell phone effect on living cells.
Research
RF Safe Research Library
Jan 1, 2015
This in vitro study used voltage clamp recordings of single OmpF porin channels in an artificial bilayer to test effects of UHF EMF (910–990 MHz). The authors report frequency-dependent changes in channel gating, with increased gating frequency and voltage sensitivity and a maximum effect at 930 MHz. Conductance was…
Effects of a continuous electromagnetic field on wound healing in human airway.
Research
RF Safe Research Library
Jan 1, 2015
This in vitro study exposed BEAS-2B human bronchial epithelial cells to a 1.8-GHz continuous EMF at SAR 1.0 W/kg and assessed wound-healing related endpoints. EMF exposure decreased cell migration in a scratch assay compared with controls. The authors report no cytotoxicity, no inhibition of proliferation, and no…
Effects of extremely low frequency electromagnetic fields on paraoxonase serum activity and lipid peroxidation metabolites in rat
Research
RF Safe Research Library
Aug 13, 2014
This randomized animal experiment examined whether 60 Hz extremely low frequency magnetic field (ELF-MF) exposure alters oxidative stress-related biomarkers in 75 Wistar rats. The authors report increased lipid peroxidation markers after both single and 14-day exposures, alongside changes in antioxidant-related…
Effects of extremely low-frequency electric fields at different intensities and exposure durations on mismatch negativity
Research
RF Safe Research Library
Jul 11, 2014
This rat study examined whether 50-Hz extremely low-frequency electric fields at 12 or 18 kV/m for 2 or 4 weeks affect mismatch negativity (MMN) and markers of oxidative damage/apoptosis in brain tissue. MMN amplitude was reported to be significantly reduced only in the 18 kV/m, 4-week exposure group versus the…
Sleep quality and general health status of employees exposed to extremely low frequency magnetic fields in a petrochemical complex
Research
RF Safe Research Library
Apr 29, 2014
This cross-sectional study measured ELF magnetic flux density in a petrochemical complex substation environment and assessed workers' sleep quality (PSQI) and general health (GHQ). It reports significant differences between case and control groups, with more sleep disorder and poorer health status in the case group.…
Association between mobile phone use and semen quality: a systemic review and meta-analysis
Research
RF Safe Research Library
Jan 1, 2014
This systematic review and meta-analysis assessed whether mobile phone use or radiofrequency exposure is associated with semen quality. Across included studies, the meta-analysis found no adverse effects in human studies, but reported detrimental effects on sperm motility and viability in vitro and harmful effects on…
Effect of mobile telephones on sperm quality: a systematic review and meta-analysis
Research
RF Safe Research Library
Jan 1, 2014
This 2014 systematic review and random-effects meta-analysis evaluated whether RF-EMR from mobile phones affects human sperm quality. Across 10 studies (1492 samples), exposure was associated with reduced sperm motility and reduced viability, while findings for sperm concentration were more equivocal. The abstract…
2.45-GHz microwave irradiation adversely affects reproductive function in male mouse, Mus musculus by inducing oxidative and nitrosative stress
Research
RF Safe Research Library
Jan 1, 2014
This animal study exposed 12-week-old male Swiss strain mice to non-thermal low-level 2.45-GHz microwave radiation for 2 hours per day over 30 days (SAR 0.018 W/kg). The abstract reports reduced sperm count and viability, testicular structural changes, lower 3β-HSD activity and plasma testosterone, and increased…