(C) 2010 American Institute of Physics. [doi:10.1063/1.3462430]“
“This article sheds light on some structural SHP099 changes in thermally treated viscose fibers at a constant temperature of 100 +/- 1 degrees C at different time periods. The obtained optical parameters were
used to calculate the crystallinity, density, Herman’s orientation function, average orientation, and form birefringence. In addition, the stress optical coefficients, thermal stress, molar refractivity, specific refractivity, and polarizabilities along and across the axis and segment anisotropy were obtained. Measurements of the refractive indices helped us to calculate the dielectric constant, dielectric susceptibility, surface reflectivity, and transparency transmittances. The mechanisms of structural variation for the viscose fibers due to the annealing process were examined with the structural details for optothermal parameters. The relationships between the measured and calculated parameters are given in illustrations and curves. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 118: 1306-1312,
2010″
“The sequential simplex method is a useful tool for rapidly optimizing a process by moving through factor space via a relatively simple geometric algorithm. This method was employed to optimize growth and survivin-BCCP production in Escherichia coli Origami
GDC-0449 molecular weight B using PF 00299804 zinc sulphate supplemented culture medium. Five experimental parameters were investigated: concentration of zinc sulphate and IPTG, pH, temperature, and agitation rate. Optimized conditions were as follows: 190 mu M zinc sulphate with 246 mu M IPTG, pH 7, at a temperature of 23.5 degrees C and agitation rate of 345 rpm. The results for cell density and survivin-BCCP production were, 17% and 140% higher than in non-zinc supplemented medium and 12.6% and 25.5% higher than could be obtained by varying one-factor-at-a-time. The present work demonstrates the effectiveness of zinc sulphate supplementation and the efficiency of the sequential simplex optimization method in obtaining high yields. (C) 2009 Elsevier B.V. All rights reserved.”
“Magnetic properties of two-dimensional (2D) paddy-field like superlattices of Mn(3)O(4) cubic nanoparticles have been investigated by magnetization measurements. The 2D ordered structure extends over several microns in size. Each nanocube is of single-crystal about 6 nm in size. The magnetic properties are investigated with the powders dispersed in nonmagnetic n-eicosane to “”dilute”" the dipolar interaction.
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