The degradation of both the viscosity and 5-Fluoracil cost viscoelastic moduli of borate-crosslinked guar gel by pectinase loaded in polyelectrolyte nanoparticles was delayed by up to 12 h, compared to about 2 h for equivalent systems where the pectinase was not entrapped. The combination of homogeneous mixing and the delayed release of enzymes packaged in polyelectrolyte complex nanoparticles showed promise for improved cleanup after hydraulic fracturing. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci 121: 1292-1298, 2011″
“Neuroendocrine cancer commonly metastasizes to the liver and often presents as unresectable

disease. Liver resection or debulking most of the tumor provides a survival advantage for patients. Whether used alone or in combination

selleck with resection, radiofrequency ablation provides a unique tool to destroy metastases to the liver and spare hepatic parenchyma. Although randomized trials are lacking, retrospective series provide promising data to consider radiofrequency ablation in the management of hepatic neuroendocrine metastases.”
“The objective of this study was to substantially enhance the yields of lipase, biomass and spores from a sporogenous probiotic bacterium, Bacillus coagulans RK-02 by multivariate response surface modeling and genetic algorithm based optimization. The effect of temperature, Tozasertib chemical structure agitation and aeration on time course of growth, lipase formation and sporulation of individual batch cultivation

were also studied. The optimum conditions for three responses were found to be different from each other. Comparatively lower temperature and higher agitation and aeration were needed for biomass and lipase production than that for maximizing sporulation rate. In the final validation experiment, three different optimal conditions for maximizing each of these responses, namely biomass, lipase and spore yields, in a stage wise manner were maintained respectively. This strategy produced 6.25 g L(-1) biomass, 6 x 10(12) spores per gram of biomass, and maximum of 13.461U lipase. Such high yield of biomass, lipase and spore from batch cultivation is first ever to be reported. (C) 2010 Elsevier B.V. All rights reserved.”
“The kinetics of acrylonitrile polymerization initiated by free radicals formed in situ in a potassium persulfate/ascorbic acid redox system was investigated in an aqueous sulfuric acid medium in the temperature range of 40-70 degrees C. The rate of polymerization and the rate of the disappearance of potassium persulfate were measured. A kinetic scheme involving the production of initiating radicals from the oxidation of ascorbic acid by potassium persulfate ions and termination exclusively by the interaction of chain radicals with persulfate ions is proposed.