(C) 2009 Wiley Periodicals, Inc. J Appl Polym Sci 114: 1018-1024, 2009″
“Background It is strongly recommended that patients wear compression after foam sclerotherapy, but pulling up a stocking may inadvertently flush foam into the femoral vein, which may increase the risk of systemic side effects and reduce great saphenous vein (GSV) occlusion rates. Objective The JNK-IN-8 in vitro hypothesis was that a stocking pull-up

maneuver would increase flow in the GSV. The aim was to quantify this using duplex ultrasound. Methods and Materials Twelve consecutive patients with primary varicose veins were studied. A below-knee 23- to 32-mmHg graduated elastic compression stocking was placed over the foot, leaving a cuff of redundant stocking around the ankle. Duplex ultrasound over the saphenofemoral junction was used to measure peak velocity (PV) and volume flow (VF) before and while the stocking was being pulled up. Results

The pull-up maneuver caused a median 17.7 times increase in PV (interquartile SN-38 cell line range (IQR) 14.223.9), from 7.6 cm/seconds (IQR 6.49.8 cm/seconds) to 150.5 cm/seconds (IQR 110187 cm/seconds) and a 9.4 times increase in VF (IQR 7.710.3), from 50.9 mL/minutes (IQR 33.878.9 mL/minutes) to 458.7 mL/minutes (IQR 292.1593 mL/minutes) (p = .002). Conclusion A stocking causes significant hemodynamic changes within the GSV. These forces could be avoided by the partial application of a stocking to knee level before foam injection. Further work may establish the implication of these findings in patients treated with foam sclerotherapy.”
“Photoelectrical measurements were taken on a nominally undoped-InGaP/GaAs superlattice, inserted between two p(+) and n(+) InGaP cladding layers. The sequence of InGaP/GaAs alternated layers forming

the superlattice was grown lattice matched on n(+)-GaAs substrates through low pressure-metal organic vapor phase epitaxy, at growth conditions previously optimized for obtaining sharp interfaces and negligible BLZ945 supplier ordering effects in the cation sublattice of the InGaP layers. A peculiar dependence of both the photocurrent and the photovoltaic signals on the modulation frequency of the exciting light beam was observed and then interpreted according to proper equivalent electrical circuits. The effects induced by an incomplete depletion of the nominally undoped superlattice region are analyzed in detail, and the analogies between photoelectrical investigation and admittance spectroscopy are pointed out.”
“The effects of soft-segment molecular weight and organic modification of montmorillonite (MMT) on thermal and mechanical properties of segmented polyurethane (PU) elastomers were investigated. The PU/MMT nanocomposites were prepared by in situ polymerization, and the compositions included soft segments with number average molecular weights of 1000, 2000, and 2900, and organic-modified MMT (including MMT-30B and MMT-130E).