Modified Curie-Weiss law is used to fit the dielectric data that exhibits almost complete diffuse phase transition characteristics. The dielectric relaxation obeys the Vogel-Fulcher relationship with the freezing temperature 286 K. In addition to relaxation observed due to transformation of the material into ergodic relaxor phase below Burn temperature, significant dielectric dispersion is observed in low frequency regime in both components of dielectric response and a small dielectric relaxation peak is observed in the temperature range (423-598 K) that is associated with defect related hopping process. Cole-Cole plots indicate polydispersive nature
of this dielectric relaxation; the relaxation distribution increasing with temperature. (c) 2011 American Institute of Physics. [doi:10.1063/1.3528219]“
“A series of the surface-functionalized nanoSiO(2)/polybenzoxazine (PBOZ) composites was produced, and an CDK inhibitor drugs attempt was made to improve the toughness of PBOZ material, without sacrificing other mechanical and thermal properties. A benzoxazine
functional silane coupling agent was synthesized to modify the surface of nano-SiO2 particles, which were then mixed with benzoxazinc monomers to produce the nano-SiO2-PBOZ nanocomposites. The LOXO-101 notched impact strength and the bending strength of the nano-SiO2-PBOZ nanocomposites increase 40% and 50%, respectively, only with the addition of 3 wt % nano-SiO2. At the same load of nano-SiO2, the nano-SiO2-PBOZ nanocomposites exhibit the highest storage modulus and glass-transition temperature by dynamic viscoelastic analysis. Moreover, the thermal stability of the SiO2/PBOZ nanocomposites was enhanced, as explored by the thermogravimetric analysis. The 5% weight loss temperatures increased with the nano-SiO2 content and were from 368 degrees C (of the neat PBOZ) to 379 degrees C or 405 degrees C (of the neat PBOZ) to 426 degrees C in air or nitrogen with additional 3 wt % nano-SiO2. The weight residue
of the same nano-composite was as PX-478 in vivo high as 50% in nitrogen at 800 degrees C. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 120: 1525-1532, 2011″
“Material and methods: Ten normal human cell lines were screened by enzyme-linked immunosorbent assay (ELISA) for the expression of a dozen secreted cytokines that have been reported to have changes in protein or mRNA levels at 1, 2, and 3 days after 0-10 Gy irradiation using <SU137</SUCs gamma rays at 0.82 Gy min<SU-1</SU. After this systematic in vitro screen, we measured changes in the level of a subset of these candidate proteins in plasma from irradiated C57BL/6 mice (n = 3 per group), comparing shams with a single radiation dose (5 Gy X-rays) at 3.7 Gy min<SU-1</SU at 6 h after irradiation.
Results: We identified four cytokine molecules that had altered levels after radiation exposure, one of which, Interleukin (IL) 6, was consistently elevated after irradiation in vitro and in vivo.