Archive

This laboratory study investigated ring-opening polymerization of ε-caprolactone using organic-acid catalysts to produce poly-ε-caprolactone intended as a biodegradable drug carrier. The authors report that citric acid catalysis yielded substantially higher molecular weight polymer than other catalysts. They also…

This study investigated 2 nm protein-stabilized gold nanoclusters in six mammalian cell types under 1 GHz electromagnetic field exposure. The authors report low intrinsic toxicity of the nanoclusters, but a significant decrease in cell viability when nanocluster-incubated cells were exposed to the 1 GHz field,…

This in vitro study evaluated microwave disinfection of dental stone casts contaminated with Bacillus subtilis under wet and dry conditions. After a drying step for the dry group (450 W for 15 minutes), both wet and dry casts were exposed to 900 W for 5 minutes and cultured to quantify CFU/mL. The authors report…

This laboratory study examined how UV-C radiation, an electromagnetic field, microwave radiation, and ultrasound affected polyphenolic compounds in chokeberry. Using UPLC-PDA-MS/MS, the authors report that UV-C, microwaves, and ultrasound generally increased several polyphenolic groups, while the electromagnetic…

This in vitro study compared microwave irradiation with chemical (2% glutaraldehyde, Corega tablets) and mechanical (brushing) methods for disinfecting complete dentures contaminated with two microorganisms. Microwave irradiation (650 W for 3 minutes) and both chemical methods showed no detectable bacterial growth at…

This in vitro study tested 900-W microwave radiation regimens (3, 5, or 7 minutes) to disinfect type IV dental stone surfaces contaminated with S. aureus, E. coli, or C. albicans. The authors report that 5 and 7 minutes achieved sterilization for S. aureus, while 3 minutes did not fully sterilize; all times were…

This paper describes an engineering approach to avoid RF/microwave radiation in wearable EEG data transmission by using visible light communication. The system performance was tested at different illuminance levels and an algorithm for low-illuminance operation was proposed. The authors report error-free transmission…

This cross-sectional online study surveyed Malaysian respondents about smartphone addiction behavior and awareness of electromagnetic radiation (EMR). Most participants reported smartphone dependency and reported being aware of EMR, with no significant difference in addiction behavior by accommodation type (home vs…

This animal experimental study reports that low-intensity ultrahigh-frequency electromagnetic radiation and a low-intensity low-frequency magnetic field, applied after radiation exposure, enhanced metabolic and regenerative processes in rat testes and liver. The magnetic field was associated with increased…

This computational study investigates nonlinear membrane-potential dynamics in a Fitzhugh-Nagumo single-neuron model that includes an external electromagnetic radiation term. The authors report that increasing the frequency of an external transmembrane current leads to mode selection among periodic, quasi-periodic,…

This in vitro study describes a method to improve DNA ligation by immobilizing T4 DNA ligase on ferromagnetic particles and applying a radio frequency alternating magnetic field. The field causes the particles to dissipate heat, which the authors report selectively heats and activates the ligase while minimally…

This paper describes an in vitro gene transfection technique termed water-in-oil droplet electroporation, using an intense DC electric field to deform a droplet between electrodes. The deformation can cause an instantaneous short circuit, during which transient membrane pores are reported to form and permit exogenous…

This retrospective cohort study reviewed medical records from a Swedish tertiary pain centre to assess 1-month outcomes after pulsed radiofrequency for chronic non-cancer pain. Among patients receiving lumbar median branch pulsed radiofrequency, a minority had major or minor improvement, while many had no change and…

This engineering study deposited Ga-doped ZnO thin films via radio frequency sputtering and examined how Ga content affects optoelectronic properties and electrical stability. The abstract reports non-monotonic changes in conductivity with increasing Ga content alongside degraded crystallinity, while maintaining >80%…

This animal and in vitro study reports a method to lyse tumor cells mechanically using targeted superparamagnetic iron oxide nanoparticles rotated by a weak alternating magnetic field. Nude mice with head and neck tumors received cetuximab-coated nanoparticles and 4 Hz field exposures for 30 minutes on alternating…

This materials study examines how a high magnetic field affects crystallization during isothermal annealing of [(FeCo)BSi]Nb4 bulk metallic glass. The authors report that the field promotes α-(Fe,Co) precipitation and suppresses boride formation, yielding a nanocomposite microstructure with α-(Fe,Co) dispersed in an…