Archive

484 posts

Showing results for: SSI

Mobile phone support for rural health workers in Nepal through 'celemedicine'.

Research RF Safe Research Library Jan 1, 2013

This article describes a pilot mobile-phone-based support system (“celemedicine”) for mid-level rural health workers in Gulmi District, Nepal, enabling free calls to three general practitioner doctors at the district hospital. The intervention aims to improve appropriate referral and connectivity between peripheral…

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…

Patient satisfaction and efficacy of accent radiofrequency for facial skin wrinkle reduction.

Research RF Safe Research Library Jan 1, 2013

This study evaluated a cosmetic radiofrequency device (Accent) for facial wrinkle reduction in 45 women receiving four weekly sessions. Patient satisfaction was higher at 6 months than at 1 month after treatment, and the authors suggest the approach may be effective for facial rejuvenation. The abstract emphasizes…

Magnetic field tunability of optical microfiber taper integrated with ferrofluid.

Research RF Safe Research Library Jan 1, 2013

This engineering study reports theoretical analysis and experimental demonstration of an S-tapered optical microfiber integrated with ferrofluid for magnetic-field tunability. The transmission spectrum and dip wavelengths were found to vary with magnetic-field intensity, with a Langevin-like response and a linear…

Enhancement of LIBS emission using antenna-coupled microwave.

Research RF Safe Research Library Jan 1, 2013

This engineering study describes using antenna-coupled microwave radiation to enhance laser-induced breakdown spectroscopy (LIBS) emission from a Gd2O3 sample at reduced pressure. The authors report substantially increased plasma emission intensity, higher-temperature plasma, and longer emission lifetime when…

[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…

Cancellation properties in Hall magnetohydrodynamics with a strong guide magnetic field.

Research RF Safe Research Library Jan 1, 2013

This paper analyzes compressible Hall magnetohydrodynamic turbulence with an external strong guide magnetic field using signed measure analysis. In simulations varying ion skin depth to modulate the Hall term, increasing the Hall term is reported to reduce the fractal dimension of current and vorticity sheets. The…

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…

Three-dimensional dynamics of a particle with a finite energy of magnetic anisotropy in a rotating magnetic field.

Research RF Safe Research Library Jan 1, 2013

This paper presents a theoretical model of a single ferromagnetic particle with finite coupling between its magnetic moment and particle body in a rotating magnetic field. It describes synchronous and asynchronous motion regimes, including planar motion at low frequencies and a precession regime at high frequencies,…

Combined bipolar radiofrequency surgery of the tongue base and uvulopalatopharyngoplasty for obstructive sleep apnea.

Research RF Safe Research Library Jan 1, 2013

This study evaluated combined bipolar radiofrequency surgery of the tongue base (RFBT) with uvulopalatopharyngoplasty (UPPP) in a single session for obstructive sleep apnea, compared with UPPP alone. The combined procedure was associated with improvements in AHI, ODI, sleepiness, and snoring, while mean oxygen…

Raman spectral analysis of nasopharyngeal carcinoma cell line CNE2 after microwave radiation.

Research RF Safe Research Library Jan 1, 2013

This in vitro study used Raman spectroscopy to assess microwave radiation effects on the CNE2 nasopharyngeal carcinoma cell line across exposure times from 2 to 25 minutes. The authors report detectable spectral changes (including C-H deformation and amide I) and significant PCA differences after 10 minutes of…

Pulsed electric field-assisted modification of pectin from sugar beet pulp.

Research RF Safe Research Library Jan 1, 2013

This engineering-focused study evaluates pulsed electric field (PEF)-assisted, solvent-free modification of pectin from sugar beet pulp. The authors report that degree of esterification increased with greater PEF intensity and energy input, with supporting evidence from FT-IR, X-ray diffraction, and NMR. Modified…

Development of a prototype of the tele-localisation system in radiotherapy using personal digital assistant via wireless communication.

Research RF Safe Research Library Jan 1, 2013

This paper describes development and testing of a Wi-Fi–enabled tele-localisation prototype for radiotherapy field localisation using a personal digital assistant (PDA). Trial tests on 30 subjects across multiple treatment regions reported localisation times under 1.5 minutes and similar transmission speeds across…

Induction of thrombosis of the abdominal aneurysm sac through the application of radiofrequency. An experimental study.

Research RF Safe Research Library Jan 1, 2012

This experimental animal study evaluated whether a radiofrequency method could induce thrombosis within an abdominal aortic aneurysm sac to potentially prevent endoleaks after endovascular repair. Six dogs received radiofrequency blood clotting of the sac and then stent-grafting, compared with a historical group of…

Prenatal and Postnatal Cell Phone Exposures and Headaches in Children.

Research RF Safe Research Library Jan 1, 2012

This cohort analysis from the Danish National Birth Cohort examined whether prenatal and/or postnatal cell phone exposure was associated with headaches in children at age seven. Using maternal questionnaire data for 52,680 children, the study reports higher odds of migraines and headache-related symptoms among…

[Recanalization of nasolacrimal duct with radio frequency: preliminary study].

Research RF Safe Research Library Jan 1, 2012

This preliminary clinical series evaluated radiofrequency-assisted recanalization of the nasolacrimal duct in adults with confirmed lower lacrimal system obstruction. The procedure used a monopolar high-frequency device at 450 kHz and 150 W under local anesthesia with sedation. At 90 days postoperatively, 81.25% of…

Effect of 60 minutes exposure to electromagnetic field on fecundity, learning and memory, speed of movement and whole body protein of the fruit fly Drosophila melanogaster.

Research RF Safe Research Library Jan 1, 2012

This animal study exposed Drosophila melanogaster to EMF from four electrical devices for 60 minutes and assessed fecundity, larval behavior, and protein patterns. The authors report no significant effect on adult fecundity, but report changes in larval learning/memory and movement speed, with the largest effects in…

Advancing profiling sensors with a wireless approach.

Research RF Safe Research Library Jan 1, 2012

This engineering paper describes a wireless implementation of a near-infrared profiling sensor using multiple sensor nodes and a base station for data preprocessing and realignment. It reports an enhanced classification approach using a back-propagation neural network to categorize objects as human, animal, or…

Evaporation rate of water as a function of a magnetic field and field gradient.

Research RF Safe Research Library Jan 1, 2012

This experimental study investigated evaporation of pure water placed at different simulated gravity positions within a superconducting magnet producing a large gradient magnetic field. Water evaporation was reported to be faster in the magnetic field than without the field, and the amount evaporated varied by…

[Effects of static magnetic field at different times on the proliferation and differentiation of osteoblasts in vitro].

Research RF Safe Research Library Jan 1, 2012

This in vitro study exposed newborn rat calvarial osteoblasts to a 3.9 mT static magnetic field for varying durations (0–4 hours). The authors report increased cell proliferation and markers of osteoblast differentiation and mineralization versus control, including higher ALP activity, calcium content, and…

Electron-phonon bound states in graphene in a perpendicular magnetic field.

Research RF Safe Research Library Jan 1, 2012

This theoretical/physics study analyzes the spectrum of electron-phonon complexes in monolayer graphene in a perpendicular quantizing magnetic field. It reports that near the threshold of optical phonon emission, standard perturbation theory fails for calculating the scattering amplitude. The authors describe new…

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…

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…

A robotic assistant for trans-oral surgery: the robotic endo-laryngeal flexible (Robo-ELF) scope.

Research RF Safe Research Library Jan 1, 2012

This paper describes an engineering/clinical tool development effort: the Robotic EndoLaryngeal Flexible (Robo-ELF) Scope System for manipulating flexible endoscopes in laryngeal surgery. The system includes multiple degrees of freedom, a passive positioning arm, and a custom joystick controller enabling one-handed…

← Prev Page 17 / 20 Next →