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The effect of postoperative immobilization on the healing of radiofrequency heat probe modified tissue: assessment of tissue length, stiffness, and morphology.

Research RF Safe Research Library Jan 1, 2008

This animal study examined how postoperative immobilization affects healing after radiofrequency heat probe shrinkage in rabbit patellar tendons. Tendon length increased across all groups by 8 weeks, but 4 weeks of immobilization resulted in less elongation than free activity. Immobilized groups had reduced…

Health hazards of mobile phones: an Indian perspective.

Research RF Safe Research Library Jan 1, 2008

This review-style article provides an overview of mobile phone radiation exposure in India and discusses potential health hazards in terms of thermal and non-thermal effects. It states that usage behaviors such as longer call duration and predominantly one-sided use are described as key risks increasing the…

Surface-induced nonlinearities of liquid crystals driven by an electric field.

Research RF Safe Research Library Jan 1, 2008

This experimental physics study examines how a static electric field affects the optical nonlinearity of methyl-red doped nematic liquid crystals. The authors report that low voltages below the Fredericks transition threshold can change the optical nonlinearity by orders of magnitude. They state that the data fit a…

Aggregation of magnetic holes in a rotating magnetic field.

Research RF Safe Research Library Jan 1, 2008

This laboratory study experimentally examined aggregation of nonmagnetic particles in a magnetic fluid layer under a rotating magnetic field. Particles formed two-dimensional clusters that repeatedly aggregated into larger clusters, producing a broad distribution of cluster sizes. The dynamics were described as…

[Radiofrequency aviation treatment for lingual root obstructive sleep apnea-hypopnea syndrome].

Research RF Safe Research Library Jan 1, 2008

This clinical study reports outcomes for 34 patients with mild and median OSAHS treated with a combination of functional endoscopic sinus surgery, UPPP, and radiofrequency ablation (RFA). Over 1 year, polysomnography showed a reduction in AHI and an effective rate of 85.29%. Because RFA was used as an adjunct to…

The effect of MRET polymer compound on SAR values of RF phones.

Research RF Safe Research Library Jan 1, 2008

This article describes a hypothesis and experimental testing of an MRET polymer compound applied to RF phones. It reports increased dielectric permittivity in water-based solutions and reduced SAR values in a tissue-simulating phantom head. It also reports no significant change in air measurements of phone signals,…

SAR changes in a human head model for plane wave exposure (500 - 2500 MHz) and a comparison with IEEE 2005 safety limits.

Research RF Safe Research Library Jan 1, 2008

This engineering/modeling study derived external electric field values from peak average 10 g SAR in a realistic human head model exposed to plane waves at 500–2500 MHz. The derived fields were compared with IEEE and ICNIRP reference levels across multiple incident directions and polarizations. The authors report…

Influence of mashed potato dielectric properties and circulating water electric conductivity on radio frequency heating at 27 MHz.

Research RF Safe Research Library Jan 1, 2008

This engineering study used experiments, computer simulations, and simplified analytical calculations to examine how mashed potato dielectric properties and circulating water electrical conductivity affect RF heating at 27 MHz. The authors report that higher circulating water conductivity and higher salt content in…

Noninvasive radiofrequency field-induced hyperthermic cytotoxicity in human cancer cells using cetuximab-targeted gold nanoparticles.

Research RF Safe Research Library Jan 1, 2008

This in vitro study reports that shortwave (MHz-range) RF exposure can induce strong cytotoxicity in EGFR-overexpressing human cancer cells when those cells have internalized cetuximab-targeted gold nanoparticles. Control nanoparticles showed minimal uptake and substantially lower cytotoxicity under RF exposure. An…

Intestinal MMC-related electric fields and pancreatic juice control the adhesion of Gram-positive and Gram-negative bacteria to the gut epithelium--in vitro study.

Research RF Safe Research Library Jan 1, 2008

This in vitro study tested whether a weak electric field reconstructed from duodenal spiking potentials during an MMC cycle affects bacterial adhesion to Caco-2 intestinal epithelial cells. The MMC-related electric field increased adhesion of Lactobacillus and Lactococcus strains, while two pathogenic strains…

Electronic response properties of carbon nanotubes in magnetic fields.

Research RF Safe Research Library Jan 1, 2008

This computational study investigates magnetic linear response properties of achiral and chiral carbon nanotubes using first-principles electronic structure methods. It computes magnetic shielding inside and outside nanotubes due to electronic currents induced by external magnetic fields applied parallel or…

Plasma-assembled carbon nanotubes: electric field-related effects.

Research RF Safe Research Library Jan 1, 2008

This engineering-focused paper compares carbon nanotube growth in dense low-temperature plasma versus on a substrate surface using hybrid/Monte-Carlo simulations. It reports that plasma parameters strongly influence ion fluxes and nanotube growth kinetics, with large differences in growth rates and fluxes between…

Improvement in magnetic field immunity of externally-coupled transcutaneous energy transmission system for a totally implantable artificial heart.

Research RF Safe Research Library Jan 1, 2008

This engineering study addresses interference between induction-heating cookers and an externally coupled transcutaneous energy transmission system for a totally implantable artificial heart. The authors report that magnetic flux from an IH cooker can couple into the TET transformer and affect system performance. A…

In vivo quantification of contrast agent concentration using the induced magnetic field for time-resolved arterial input function measurement with MRI.

Research RF Safe Research Library Jan 1, 2008

This Medical Physics article presents a phase-based MRI method to quantify paramagnetic contrast agent concentration by inverting susceptibility-induced magnetic field shifts, aiming to improve arterial input function (AIF) measurement in DCE-MRI. After in vitro validation, the approach was applied in vivo in 14…

[Microstrip antenna design and system research of radio frequency identification temperature sensor].

Research RF Safe Research Library Jan 1, 2008

This engineering paper introduces an RFID sensor network concept integrating RFID with wireless sensor networks and emphasizes the role of antennas. It discusses coil, dipole, and microstrip antennas and reports designing a microstrip antenna for a wireless temperature monitoring and control system. Measurements are…

Minimal-SAR RF pulse optimization for parallel transmission in MRI.

Research RF Safe Research Library Jan 1, 2008

This engineering study presents an optimization framework to design RF pulses for parallel transmission MRI with the goal of minimizing SAR. Using computer simulations of a 4-channel system, the authors report significant SAR reduction while maintaining excitation pattern quality and without increasing pulse…

The effect of GSM-like ELF radiation on the alpha band of the human resting EEG.

Research RF Safe Research Library Jan 1, 2008

This double-blind, counterbalanced cross-over study investigated whether extremely low frequency (DC to at least 40 kHz) fields emitted by GSM handsets affect resting EEG. In 72 healthy volunteers, the authors report a decrease in the alpha band during 20 minutes of ELF exposure in the exposed hemisphere only. They…

Coil design considerations for deep-brain transcranial magnetic stimulation (dTMS).

Research RF Safe Research Library Jan 1, 2008

This engineering-focused conference paper proposes figures of merit to evaluate deep-brain transcranial magnetic stimulation (dTMS) coil designs, focusing on depth penetration, scalp stimulation, focality, and energy. It analyzes circular crown and C-core coils and reports reduced electric-field attenuation with…

Development of a cell phone-based video streaming system for persons with early stage Alzheimer's disease.

Research RF Safe Research Library Jan 1, 2008

This conference paper reports early development of a cell phone-based video streaming system to deliver video reminders for people with early dementia. Carers can record and schedule reminders remotely via a computer and webcam. A first prototype was implemented, with an initial field trial scheduled and a larger…

Electromagnetic interference to infusion pumps. Update2008 from GSM mobile phones.

Research RF Safe Research Library Jan 1, 2008

This engineering study updates a prior (2005) survey on electromagnetic interference (EMI) affecting infusion pumps and extends testing to DECT phones and WiFi terminals. It reports a reduced failure rate for GSM phone exposure compared with 2005 (58% to 30%). The authors report that WiFi and DECT did not pose a real…

Combined effect of temperature and pulsed electric fields on apple juice peroxidase and polyphenoloxidase inactivation.

Research RF Safe Research Library Jan 1, 2008

This laboratory study evaluated pulsed electric fields (PEF) combined with preheating to inactivate peroxidase (POD) and polyphenoloxidase (PPO) in freshly prepared apple juice. The highest reported inactivation occurred with preheating to 50°C and PEF at 40 kV/cm for 100 μs, exceeding the reductions seen with…

Alkali (NaOH) pretreatment of switchgrass by radio frequency-based dielectric heating.

Research RF Safe Research Library Jan 1, 2008

This engineering study reports using radio-frequency (RF)-based dielectric heating to assist NaOH pretreatment of switchgrass to improve enzymatic digestibility. Under the stated conditions, RF-assisted pretreatment produced higher xylose and glucose yields than conventional heating and maintained higher yields at…

In-line application of electric field in capillary separation systems: Joule heating, pH and conductivity.

Research RF Safe Research Library Jan 1, 2008

This engineering study investigated factors affecting current when an electric field is applied in-line in a capillary separation system. Temperature measurements and a replicated cooling setup were used to estimate Joule heating effects, which were reported to be relatively small. In contrast, significant pH shifts…

Microscopic observation of living cells during their exposure to modulated electromagnetic fields.

Research RF Safe Research Library Jan 1, 2008

This paper describes an exposure and microscopy system designed to continuously observe living cells during exposure to modulated RF-EMF similar to mobile phone signals. Using protocols where the same cells serve as controls before and after exposure, the system was validated with endocytosis measurements. Under 900…

Histologic evaluation of thermal capsulorrhaphy of human shoulder joint capsule with monopolar radiofrequency energy during short- to long-term follow-up.

Research RF Safe Research Library Jan 1, 2008

This Level III therapeutic case-control study evaluated shoulder capsule histology after arthroscopic thermal capsulorrhaphy using monopolar radiofrequency energy, with follow-up from 3.5 to 62 months. Mid- and long-term mRFE groups did not differ from controls on several histologic categories (synovial layer, edema,…

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