Each image was analyzed twice to determine tracing repeatability. Pearson correlation coefficients were calculated among 2 images of the same animal, as well as among duplicate readings of the same image to determine animal and check details tracing repeatabilities. The mean percentages of EW were 30.14 +/- 14.37, 31.43 +/- 14.77, and 28.57 +/- 12.38, and the average percentage accuracy for duplicate image EW measures was 96, 96, and 93 (P < 0.0001) for groups 1, 2, and 3, respectively. The Pearson
correlation coefficients for EW percentage and chute temperament scores were 0.674 (P < 0.0001), 0.95 (P < 0.0001), and 0.696 (P < 0.0001), whereas the correlations between EW and flight speeds were 0.415 (P < 0.0001), 0.333 (P < 0.05), and 0.294 (P < 0.01) for groups 1, 2, and 3, respectively. Results from this study indicate that percentage EW in cattle could be used as a quantitative tool with minimal equipment to assess temperament in beef cattle, providing an objective method for temperament selection.”
“Polyphenylsilsesquioxane
(PPSQ) of ladder structure synthesized in laboratory was incorporated into polycarbonate (PC) by means of a twin-screw extruder. Vorinostat clinical trial Scanning electron microscopy (SEM) observations showed that spherical PPSQ particles of size 0.5-1.5 mu m dispersed homogeneously in PC. The incorporation of PPSQ into PC improved the elongation at break and flexural strength. Thermal gravimetric analysis and Fourier transform infrared spectroscopy revealed that PPSQ made the initial thermal decomposition of PC happen fast. The early
cleavages of C-C and C-O bonds in the PC chains induced crosslinking reaction in the condensed phase selleck chemicals char. According to the cone calorimetry (CONE) tests, loading of 8 wt % PPSQ reduced the peak heat release rate of PC composites from 570 to 153 kW/m2. The chars obtained after CONE testing of PC/PPSQ composites showed continuous, smooth, flaky, and cascading char and SiO2 ceramic layer on the top. These indicated the good flame retardancy of PC/PPSQ, that is the attainment of a UL-94 rating of V-0 (1.6 mm), and limiting oxygen index of 42.0% when PPSQ was in 8 wt % in PC. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012″
“Domain structures of 100-300 nm thin epitaxial films of ferroelectric PbTiO3 grown by metalorganic chemical vapor deposition technique on LaAlO3 perovskite substrate have been investigated by piezoresponse force microscopy and infrared reflectance spectroscopy techniques. Normal-incidence reflectance spectra reveal both E- and A(1)-symmetry modes of PbTiO3. The latter ones demonstrate the presence of a minor fraction of a-domains (with in-plane orientation of the spontaneous polarization) in the film.