Therefore, the nanocomposite film with a higher DR was particularly suitable for twist-wrapping applications. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci 120: 2772-2779, 2011″
“The phonon component of thermal diffusivity (D) for ten synthetic single-crystals (LiF, NaCl, NaI, NaI: Tl, KCl, KBr, CsI, CsI: Tl, AgCl, and AgBr) with the B1 and B2 structures was measured from ambient temperature (T) up to similar to 1093 K using contact-free, laser-flash BB-94 analysis, from which effects of ballistic radiative transfer were removed. We investigated optical flats from

different manufacturers as well as pellets made from compressed powders of most of the above chemical compositions plus LiI, NaBr, KI, RbCl, RbBr, RbI, CsCl, CsBr, and AgI. Impurities were characterized using various spectroscopic methods. With increasing T, D decreases such that near melting the derivatives partial derivative D/partial derivative T are low, -0.0006 + 0.0004 mm(2) s(-1) K(-1). Our results are similar to 16% lower than D(298)

previously obtained with contact methods, which are elevated by ballistic radiative transfer for these infrared (IR) windows, and are well described by either D(-1) following a low order polynomial in T, or by D(-1) proportional to T(+n), where n ranges from 1.0294 to 1.9429. Inverse correlations were found between D(298) and both density and thermal expansivity (alpha). Primitive lattice constant buy LY3023414 times compressional velocity correlates directly with D but changes much more slowly with temperature. Instead, D(T) is proportional to (T alpha(L))(-1) from similar to 0 K up to the limit of measurements, in accord with these physical properties being anharmonic.

On average, the damped harmonic oscillator-phonon gas model reproduces D(298) based on two physical properties: compressional velocity and the damping coefficient (Gamma) from analysis of IR reflectivity data. Given Geneticin large uncertainties in Gamma(T), D(-1)(T) is reproduced for LiF, NaCl, MgO, and the silver halides, for which IR reflectivity data are available. Our correlations show that optical phonons largely govern heat transport of insulators, and permit prediction of D and thus thermal conductivity for simple, diatomic solids. (C) 2011 American Institute of Physics. [doi:10.1063/1.3544444]“
“Materials and methods: The mice were whole-body irradiated with 0, 50, 200, or 300 cGy <SU56</SUFe<SU26</SU (1 GeV) at similar to 1 Gy/min and euthanised on days 4 and 30 thereafter for analyses.