95 GHz) radiofrequencies
(RF) would induce chronic illness in Sprague-Dawley (SD) rats.
Materials and methods: Two groups of 40 SD rats (50% males and females in sham and exposed groups) were exposed to CDMA and WCDMA RF simultaneously at 2.0 W/kg for 45 min/day (total 4.0 W/kg), 5 days per week for a total of one year. Body and organ weight measurements, urinalysis, haematological and blood biochemical analysis, and histopathological evaluations were performed.
Results: The mortality patterns in male selleck chemicals and female rats exposed to RF were compared with those found in gender-matched sham control animals. No significant alteration in body weight was observed with the simultaneous combined RF exposure. Most RF-exposed rats showed
no significant alteration, based on urinalysis, haematology, blood biochemistry, or histopathology. However, some altered parameters of the complete blood count and serum chemistry were seen in RF-exposed rats. The total tumour incidence was not different between sham-exposed and RF-exposed animals.
Conclusions: Our results suggest that one-year chronic exposure to CDMA (849 MHz) and WCDMA (1.95 GHz) RF simultaneously at 2.0 W/kg for 45-min RF exposure periods (total, 4 W/kg) did not increase chronic illness in rats, although there were some altered parameters in the complete blood count and serum chemistry.”
“Poly(styrene-co-divinylbenzene) microspheres with size ranging from 1.6 to 1.8 mu m were prepared in acetic acid by precipitation NVP-BSK805 polymerization. The particle size and particle size distribution were determined by laser diffraction particle size analyzer, and the morphology of mTOR inhibitor the particles was observed with scanning electron microscope. Besides, effects of various polymerization parameters such as initiator and total monomer concentration, divinylbenzene (DVB) content, polymerization time and polymerization temperature on the morphology and particle size were investigated in this article. In addition, the yield of
microspheres increased with the increasing total monomer concentration, initiator loading, DVB concentration and polymerization time. In addition, the optimum polymerization conditions for synthesis of monodisperse crosslinked poly(styrene-co-divinylbenzene) microspheres by precipitation polymerization in acetic acid were obtained. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012″
“We studied the switching dynamics of a ferroelectric-gate thin-film transistor (FeTFT) consisting entirely of oxide-based thin films: SrRuO3 (SRO: bottom-gate electrode), Pb(Zr,Ti)O-3 (PZT: ferroelectric), and ZnO (semiconductor). We switched the FeTFT channel conductance by applying short pulses to the gate electrode. We found that the switching of a FeTFT was caused by the domain wall motion in a ferroelectric film. The polarization reversal starts from the region located under the source and drain electrodes and travels along the channel length direction.