Moderate molecular weight (M(n) similar to 12 kg/mol) TP was achieved with glass transition temperatures about 100 degrees C (DSC and DMA). The TP exhibited improved
thermal stability compared with polylactide (PLA), with a thermal degradation temperature of about 80 degrees C higher than PLA. Although the TP exhibited distinctly different surface morphology compared with that of PLA, both showed similar contact angle and surface energy (ca. 40 mN/m) properties. Blends of PLA and TP showed enhanced glass transition (similar to 5 degrees C change in T(g)) temperatures compared ALK assay with PLA homopolymer. This is due to the compatibility of PLA and TP. Thus, TP could be used as an additive for PLA-based blends to enhance compatibility with phenolic-based resins. TP electrospun fiber morphology is also reported. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci 122: 2520-2528, 2011″
“We report here an easily reversible set-reset process in a new Ge15Te83Si2 glass that could be a promising candidate for phase change random access memory applications. The I-V characteristics of the studied sample show a comparatively low threshold electric field (E-th) of 7.3 kV/cm. Distinct differences in the type of switching behavior
are achieved by means of controlling the on state current. It enables the observation of a threshold type for less than 0.7 mA beyond memory type (set) switching. The set and reset processes have find more been achieved with a similar magnitude of 1 mA, and with a triangular current pulse for the set process and a short duration rectangular pulse of 10 msec width for the reset operation. Further, a self-resetting effect is seen in this material upon excitation with a saw-tooth/square
pulse, and their response of leading and trailing edges are discussed. About 6.5 x 10(4) set-reset cycles have been undertaken without SNS-032 order any damage to the device. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3574659]“
“Background: Studies in the United States report inverse associations of the Mediterranean dietary pattern with breast cancer risk, and several studies in Mediterranean countries indicate inverse associations of breast cancer risk with intake of olive oil, a constitutional component of this diet. No study, however, has evaluated the association of the traditional Mediterranean diet with breast cancer in a Mediterranean country.
Objective: We studied the relation of conformity to the Mediterranean diet with breast cancer risk in the context of the European Prospective Investigation into Cancer and Nutrition cohort in Greece.
Design: We followed up 14,807 women for an average of 9.8 y and identified 240 incident breast cancer cases.