Thermal decomposition temperature (TDT(10%)) values were above 400 degrees C due to the presence of the aromatic rings in the diamine. All PAs showed good transparency in the
visible region (>88% at 400 nm) due to the incorporation of the fluorene moiety. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 120: 2381-2389, 2011″
“Low cost optical OFDM has great potential for next generation optical access networks and PONs, due to its high flexibility in bandwidth manipulation, and high spectral efficiency. Here, a low cost optical OFDM is proposed, based on adaptive direct modulation semiconductor optical amplifier. Adaptive current loading techniques for PAPR (peak to average power ratio) reduction are proposed and analyzed. Selleck Rabusertib Simulations show
that the proposed adaptive techniques enable significant BER improvement. (C) 2013 Elsevier Savolitinib Inc. All rights reserved.”
“Preterm newborn infants have a high morbidity rate. The most frequently affected organs where free gas is involved are the lungs and intestines. In respiratory distress syndrome, both hyperexpanded and atelectatic (collapsed) areas occur, and in necrotizing enterocolitis, intramural gas may appear in the intestine. Today, these conditions are diagnosed with x-ray radiography. A bed-side, rapid, nonintrusive, and gas-specific technique for in vivo gas sensing would improve diagnosis. We report the use of noninvasive laser spectroscopy, for the first time, to assess gas content in the lungs and intestines of three full-term infants. Water vapor and oxygen were studied with two low-power diode lasers, illuminating the skin and detecting light a few centimeters away. Water vapor was easily
detected in the intestines and was also observed in the lungs. The relatively thick chest walls of the infants prevented detection of the weaker oxygen signal in this study. However, results from a previous phantom study, together with scaling of the results presented here to the typical chest-wall thickness of preterm infants, suggest that oxygen also should be detectable in their lungs. (C) 2013 Society of Photo-Optical Instrumentation Engineers (SPIE)”
“Background: home visits and telephone calls are two often used approaches in transitional care but their differential effects are unknown. selleck screening library Objective: to examine the overall effects of a transitional care programme for discharged medical patients and the differential effects of telephone calls only. Design: randomised controlled trial. Setting: a regional hospital in Hong Kong. Participants: patients discharged from medical units fitting the inclusion criteria (n = 610) were randomly assigned to: control (‘control’, n = 210), home visits with calls (‘home’, n = 196) and calls only (‘call’, n = 204). Intervention: the home groups received alternative home visits and calls and the call groups calls only for 4 weeks. The control group received two placebo calls.