Therefore, Ho is a promising material for filters
and multilayer coatings in the energy range below the O-2,O-3 edge in which most materials have a large absorption. Good consistency of the data resulted from the application of f and inertial sum rules. (C) 2011 American Institute of Physics. [doi:10.1063/1.3556451]“
“Graft copolymerization of poly(acrylonitrile) onto cassava starch was carried out with potassium persulphate (PPS) as the free radical initiator using a response surface Box-Behnken design. Different levels of monomer concentration, initiator concentration, and temperature were used, and regression models were generated in terms of these factors, which can be used to predict ABT-737 manufacturer the grafting level and efficiency at a given level of the factors. The grafted starches were characterized by FTIR, XRD, and SEM analyses and determination of %grafting (%G), N-content, thermal properties, water and saline selleck screening library solution retention, and rheological properties. Under the conditions used, % G was found to depend only on the temperature used for the reaction. The maximum %G of 120.1 was obtained for the sample synthesized under
the following conditions: weight of AN = 0.753 mol/10 g starch, weight of PPS 0.284 g and temperature 55 degrees C, and the grafting efficiency was 30.03%. The absorption bands at 2243 cm(-1) for the nitrile group (-CN) in the FTIR spectra of the products confirmed the grafting reaction. There was a decrease in crystallinity and disappearance of the granular structure after grafting of the starch. The melting temperatures of the graft copolymers determined by differential scanning calorimetry analysis were higher than that of the native starch. The grafted starches exhibited very high thermal stability as observed Lapatinib molecular weight from the thermogravimetric analysis. The superabsorbent polymer prepared from the grafted starch by alkali saponification exhibited a maximum water absorbency of 636 g/g. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci 122: 1546-1555, 2011″
“To evaluate the efficacy of GnRH antagonist
in comparison with the GnRH agonist protocol in OCP pretreated polycystic ovary syndrome (PCOs) patients undergoing their first ART cycle.
Prospective randomized controlled trial. University-based tertiary fertility center. Ninety-five PCOs patients under 35 years of age, with primary infertility were randomized to an ovarian stimulation protocol consisting of either. GnRh antagonist (study group) or GnRH agonist (control group) after pretreatment with OCP. Coasting or GnRH agonist Trigger was used when estradiol level a parts per thousand yen3,000 pgr/ml in the control and study group, respectively. Both groups received 800 mg vaginal progesterone and 4 mg oral estradiol valerate for luteal phase support.