According to the characterization results, PP/EPR was mainly composed of random poly(ethylene-co-propylene), segmented poly(ethylene-co-propylene), and high isotactic PP. Using TEA/TIBA mixture as cocatalyst and DDS as external electron donor, as TEA/TIBA ratio increased, the impact strength of iPP/EPR in-reactor alloys had an increasing trend. Using TEA/TIBA mixture as cocatalyst and D-donor as external electron donor, the impact strength of iPP/EPR in-reactor alloy were dramatically improved. In this case, the iPP/EPR in-reactor alloy prepared at TEA: TIBA = 4 : 1 was the

toughest. The influence of cocatalyst and external electron donor on the flexural modulus and flexural strength could be BEZ235 chemical structure ignored. (c) 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011″
“We studied evanescent wave coupling behavior between low index-contrast upper-level

waveguides and thin-film Si and Ge photodetectors on SOI and germanium-on-insulator Microbiology inhibitor (GOI) substrates, respectively. We present a simple and intuitive leaky-mode phase-matching model using a ray-optics approach to determine the conditions for efficient coupling, both in 2D and 3D structures. It is shown that the presence of leaky modes that are phase-matched between the waveguide and the Si or Ge photodetector layer is the key condition for efficient coupling. Our approach was compared to other methods, such as finite-difference time domain (FDTD)/beam propagation method (BPM) and mode analysis. We report

that, depending on the way a waveguide photodetector device is designed, waveguide-to-photodetector coupling efficiency may or may not be critically sensitive to design parameters, such as the photodetector layer thickness. As an example, the stark contrast of coupling behavior in the two most popular Ge photodetector structures integrated Blebbistatin order with Si rib waveguide versus channel waveguide is shown. The device design factors and the trends that affect such coupling sensitivity are identified and explained in the paper. (C) 2011 American Institute of Physics. [doi:10.1063/1.3642943]“
“The interferon-gamma release assays have greater specificity than the tuberculin skin test (TST), and at least equal sensitivity. We analyzed the sensitivity and specificity of the TST in immunocompetent children considering QuantiFERON as the referent standard. A TST cut-off point of >= 5 mm indicates excellent sensitivity (100%) and specificity (93%) in children without Bacillus Calmette-Guerin. In Bacillus Calmette-Guerin-vaccinated children, the TST cut-off point of >= 10 mm had poorer specificity (86%), and a cut-off point of >= 15 mm resulted in reduced sensitivity (60%).”
“Polyamide 6 (PA6) fibers were prepared by CaCl2 complexation and the gel spinning technique. PA6 was partially complexed with CaCl2 for the purpose of suppressing interchain amide group hydrogen bonding.