“
“The carbon nanotubes (CNTs)/rigid polyurethane (PU) foam composites with a low percolation threshold of similar to 1.2 wt % were prepared by constructing effective conductive paths with homogeneous dispersion of the CNTs in both the cell walls and struts of the PU foam. The conductive foam presented excellent electrical stability under various temperature fields, highlighting the potential applications for a long-term use over a wide temperature Transmembrane Transporters inhibitor range from 20 to 180 degrees C. Compression measurements
and dynamical mechanical analysis indicated 31% improvement in compression properties and 50% increase in storage modulus at room temperature in the presence of CNTs (2.0 wt %). Additionally, the incorporation of only 0.5 wt % CNTs induced remarkable thermal stabilization of the matrix, with the degradation temperature increasing from 450 to 499 degrees C at the 50% weight loss. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci 120: 3014-3019, 2011″
“The management of carotid stenosis has enjoyed renewed interest in the neurological community in recent years due to the advent of endovascular approaches. In concert, progress in medical treatment of these patients has rekindled the debate regarding the best management of carotid stenosis overall, both for symptomatic and asymptomatic MEK inhibitor cancer disease. For symptomatic carotid stenosis, the major decision required is choosing
the type of intervention best suited for individual patients: carotid endarterectomy versus carotid artery stenting. For patients BKM120 with asymptomatic carotid stenosis, intensive medical management has evolved significantly over the past decade to decrease the risk of ischemic stroke to match surgical intervention under most circumstances. This review will examine the supporting evidence for each intervention, and discuss the recent advances in medical and endovascular therapy that provide the data for a new era in clinical decision making.”
“Synthesis, copolymerization, and physicochemical properties of new, of
different degrees of crosslinker tetrafunctional bis[4(2-hydroxy-3-methacryloy-loxypropoxy) phenyl] sulfide and glycidyl methacrylate copolymers are presented. The monomers were used for the synthesis of porous microspheres in the presence of pore-forming diluents, decan-1-ol, and toluene. Influence of diluents composition on their porous structures was studied. Porous structure of the obtained microspheres in dry (from nitrogen adsorption-desorption measurements) states was studied. Their chemical structures were studied by the use of Fourier transform infrared. The number of epoxy groups of the obtained copolymers, their thermal properties (thermogravimetric analysis), and swelling characteristics in 10 solvents of different chemical nature were examined. Selected copolymers were modified by amines in the epoxide ring-opening reaction. (C) 2011 Wiley Periodicals, Inc.
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