Methods. One hundred patients undergoing mandibular
osteotomy surgery were studied. Patients were allocated randomly to receive 1 of 2 treatment regimens: 0.15 mg/kg ondansetron or 0.5 mg/kg metoclopramide intravenously 30 minutes before extubation. All were adults and were treated by one surgeon and all operations were the same and lasted 2.5 to 3.0 hours. The patients were assessed at 3 time periods: 0 to 3 hours, 3 to SB203580 research buy 12 hours, and 12 to 24 hours postoperatively for emesis.
Result. The data from this study showed that during the first 24-hour postoperative period, patients receiving ondansetron following general anesthesia had an 11% (11 patients) incidence of emesis compared with 28% (22 patients) in the group that received metoclopramide.
Conclusion. In this study, ondansetron (0.1 mg/kg) was twice as effective in preventing postoperative vomiting compared with metoclopramide. (Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2011;111:275-277)”
“DC, AC conductivities and dielectric properties of high abrasion furnace carbon black (HAF)/acrylonitrile butadiene rubber
(NBR) composite have been studied with varying the aramide Stable Kevlar(R) fiber content, temperature, and frequency. Generally, the electrical conductivity was decreased with increasing Stable Kevlar(R) fiber content, which was confirmed by the positron annihilation lifetime spectroscopy. Negative temperature coefficient of conductivity (NTCC) behavior between 353 and 413 K was detected, except TGF-beta inhibitor for the composite containing 10 phr Kevlar which showed positive temperature coefficient of conductivity (PTCC) behavior above 383 K. These NTCC
and PTCC behaviors were further manifested by differential scanning calorimetry (DSC). For the composite with 10 phr Kevlar, ATPase inhibitor the interfacial polarization between the fibers and the polymeric composite can be ascribed to Maxwell-Wagner-Sillars mechanism. The (MWS) relaxation disappeared for higher fibers content. The analysis of the electric modulus in the frequency range from 1 kHz to 1 MHz shows that the interfacial relaxation obeys ColeDavison distribution of relaxation times. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012″
“Domain growth under the electric field of an atomic force microscope (AFM) is studied by piezoresponse force microscopy in congruent single-crystal LiTaO3 and compared to a finite element method simulation. The model is based on the existence of a conductive top layer, being the water absorbed layer always present in AFM experiments in air, within which the electric potential can propagate beyond the tip contact area. As a result, the simulated domain growth demonstrates kinetics in agreement with experimental observations, thus underlying the active role of the water layer. (C) 2011 American Institute of Physics. [doi:10.1063/1.3623762]“