In step 1 with 20% ammonium sulfate and a 1:0.5 (v/v) aqueous phase-to-t-butanol ratio at 35 degrees C and pH 7, most of the laccase remained in the lower aqueous phase. Step 2, with 90% ammonium sulfate and the other variables the same as in step 1, resulted in laccase concentrated at the interface. The

two-step TPP led to 60% recovery of laccase with 13.2-fold purification. The Pfizer Licensed Compound Library chemical structure TPP protocol developed in our study for the concentration and purification of laccase is rapid, simple and highly efficient. (C) 2011 Elsevier B.V. All rights reserved.”
“This article reports an improved headspace gas chromatographic (HS-GC) technique for the determination of monomers in polymer latex. The method is based on a HS-GC technique reported previously (Chai et al., J Appl Polym Sci 2006, 99, 392) but includes a major modification in the method of sample preparation. By using a weight-based sampling method, coupled with initial dissolution in dimethyl sulfoxide (DMSO), followed by water dilution, the uncertainty in the sample preparation

associated with previous method can be significantly reduced. The improved method is reliable, practical, and suitable for use in the kinetic study during emulsion polymerization. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012″
“Migraine has been established as a risk factor for ischemic stroke. Further evidence suggests that migraine this website is also associated with other ischemic vascular events, including myocardial infarction and cardiovascular death. However, these associations appear to be limited to the subgroup of patients with migraine with aura (MA). check details Moreover, there is increasing evidence that among patients with MA, additional subgroups exist that carry particular increased risk. The association with ischemic stroke is, for example, particularly strong for younger women with MA who smoke and/or use oral contraceptives. Results from recent studies support an even more complex interrelationship characterized by additional modifying effects of other factors on the association between MA and ischemic vascular events. These include vascular risk factors, migraine attack frequency, and genetic variants.

In addition, there appear to be differential effects with regard to ischemic stroke and myocardial infarction. These new findings await confirmation in independent patient populations and are currently not sufficient to argue for a change in diagnostic testing or treatment.”
“Application of Kelvin probe force gradient microscopy (KPFGM) to visualize the local charge dissipation in thin dielectric layers is considered. By this method, the local charge behavior in nano thin SiO(2), Si(3)N(4), and LaScO(3) dielectric layers has been studied. Local charging of the layers has been performed at the point contact with a conductive probe. KPFGM potential images reveal variations of the surface potential in the locally charged areas, which makes it possible to detect the injected charge and to study its behavior.