The PPO from grapes extracted with Triton-X-114 was activated with 0.2% of the

ionic detergent sodium dodecyl sulfate (SDS), and exhibited maximum activities at pH 5.5 and at 30 degrees C. It was stable until the temperature reached 60 degrees C. (C) 2011 Elsevier Masson SAS. All rights reserved.”
“The dielectric relaxation at temperatures ranging from 100 degrees C to 550 degrees C in lanthanum-doped barium strontium titanate glass ceramics has been investigated by measurements of both dielectric temperature curve and complex impedance spectroscopy. The temperature dependence of dielectric OH-FMK Caspase Inhibitor VI manufacturer properties reveals two regimes. In the first regime, at temperatures lower than 350 degrees C, the charge carrier contributed to interfacial polarization is conduction electrons. In contrast, in the second regime, at temperatures higher than 350 degrees C, the dielectric relaxation was attributed to the thermally activated movement of oxygen vacancies. Thus, two relaxation mechanisms could be explained on the basis of defect chemistry and impedance analysis. (C) 2011 American Institute of Physics. [doi:10.1063/1.3581065]“
“A simple and rapid HPLC-based method was developed for simultaneous determination of major classes of plant growth

regulators (PGRs) in Monostroma and different species of Viva. The plant Cl-amidine research buy growth regulators determined included gibberellic acid (GA(3)), indole-3-acetic acid (IAA), abscisic acid (ABA), indole-3-butyric acid (IBA), salicylic acid and kinetin riboside (KR) and their respective elution time was 2.75, 3.3, 3.91, 4.95, 5.39 and 6.59 min. The parameters optimized for distinct separation of PGRs were mobile phase (60:40 methanol and 0.6% acetic acid in water), column temperature (35 degrees C) and flow rate (1 ml/min). This method presented an excellent linearity (0.2-100

mu g/ml) with limit of detection (LOD) as 0.2 mu g/ml for ABA, 0.5 mu CHIR-99021 order g/ml for KR and salicylic acid, and 1 mu g/ml for IAA, IBA and GA3. The precision and accuracy of the method was evaluated after inter and intra day analysis in triplicates. The effect of plant matrix was compensated after spiking and the resultant recoveries estimated were in the range of 80 -120%. Each PGR thereby detected were further characterized by ESI-MS analysis. The method optimized in this study determined IBA along with IAA for the first time in the seaweed species investigated except Viva linza where the former was not detected. In all the species studied, ABA level was detected to be the highest while kinetin riboside was the lowest. In comparison to earlier methods of PGR analysis, sample preparation and analysis time were substantially reduced while allowing determination of more classes of PGRs simultaneously. (C) 2011 Elsevier Masson SAS. All rights reserved.”
“Both automated and auscultatory blood pressure (BP) devices have their strengths and accuracy limitations.