195). One-way analysis of variance showed that canals instrumented with ProTaper F4 showed maximum reduction in VRF resistance compared with control uninstrumented group.

Conclusions. Profile 6% taper instruments offer the advantage of maximum debridement without significant reduction in root fracture resistance. (Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2010; 109: e105-e110)”
“A modified eighth-order Landau potential was proposed for the BaTiO3 single crystal by taking account into the quantum mechanical

effects at low temperature. While all existing thermodynamic potentials for BaTiO3 fail to accurately describe the pressure dependence of ferroelectric transition temperatures, the temperature and hydrostatic pressure phase diagram constructed using the modified potential shows excellent agreement with experimental measurements selleck inhibitor by Ishidate, Abe, Takahashi, and Mori [Phys. Rev. Lett. 78, 2397 (1997)]. On the basis of the new proposed Landau potential, we calculated the dielectric coefficients, spontaneous polarizations, temperature-electric field phase diagram, and piezoelectric coefficients, all in good agreement well with existing Emricasan clinical trial experimental data. (c) 2010 American Institute of Physics. [doi:10.1063/1.3504194]“
“In this study, a new sorbent, a poly(acryl-amide-co-itaconic acid) [P(AAm-co-IA)]/activated charcoal (AC) composite,

was prepared by the aqueous polymerization QNZ molecular weight of acrylamide and itaconic acid in the presence of AC with N,N’-methylene bisacrylamide as a crosslinker and potassium

persulfate as an initiator. The P(AAm-co-IA)/AC composite sorbent showed a fair capacity to adsorb the cationic dye methylene blue. The maximum sorption capacity, as studied at 23, 37, and 50 degrees C and determined with the Langmuir isotherm model, was found to be 909.0, 312.5, and 192.3 mg/g, respectively. For an initial concentration of 5 mg/L, the kinetic uptake data were studied with various kinetic models. The pseudo-second-order equation was found to fairly fit the uptake data with a regression value of 0.999. The dye uptake increased with the pH of the sorbate solution, and the optimum pH was found to be in the range of 7-10. Intraparticle diffusion was also observed to take place, and the coefficient of intraparticle diffusion was evaluated to be 26.51 x 10(-2) mg g(-1) min(-1/2). The various thermodynamic parameters were also determined to predict the nature of the uptake process. The sorption process was found to be spontaneous, as indicated by a negative standard free energy change. The negative standard enthalpy change suggested an exothermic nature for the uptake. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 119: 2525-2532, 2011″
“Objective. The aim of this study was to evaluate TMJ arthroplasty with auricular cartilage grafts in patients with osteoarthritis, refractory to previous surgical and nonsurgical treatment.

Study design.