There was a significantly higher (P < 0.01) percentage of progressive motility, viability and acrosomal integrity in two L-cysteine-supplemented groups (group II and group III) compared with the control. There was a biphasic effect of L-cysteine, with the highest percentage of progressive motility, viability and acrosomal integrity in group III. In conclusion, 5 or ACY-241 10 mmol L(-1) was the optimum concentration of L-cysteine to be added to the LEY extender for improving the quality of frozen-thawed boar semen.”
“Supermacroporous poly(N-isopropylacrylamide) (PNIPAAm) cryogels containing

urease were prepared via UV irradiation technique and hydrogen peroxide as initiator. Specifically, due to the cryostructuration phenomenon urease molecules were embedded into the dense cryogel walls. Thus, although the enzyme is physically entrapped, the system exhibited remarkable resistance against leaking due to the dense polymer network formed in the cryogel walls. The immobilized urease can catalyze the hydrolysis of urea in a broad temperature range in both batch and flow regime. The interconnected macropores assist for unhindered diffusion of the substrate and reaction products through the gel, thus, paving the way for consecutive reuse at a constant activity, in contrast GPCR Compound Library to the conventional

PNIPAAm hydrogel. Due to the spongy-like morphology PNIPAAm cryogels containing urease can be exploited as highly permeable membrane for direct removal of traces of urea from continuously flowing feed solutions. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci 122: 1742-1748, 2011″
“We analyze the unique property of periodic arrays of subwavelength metallic slits to allow extraordinary electromagnetic transmission at multiple frequency bands. The diffraction limit in periodic arrays of subwavelength metallic slits is mitigated by excitation of surface waves which assist efficient coupling of a transverse magnetic-polarized incident electromagnetic wave into the TEM waveguide

modes of the subwavelength slab INCB018424 order waveguides formed by metallic slits. By investigating the geometry dependence of the electromagnetic guided modes supported by periodic arrays of subwavelength metallic slits, we present the design of a periodic array of metallic nanoslits which enables efficient interaction of terahertz and optical waves at nanoscale dimensions. (C) 2011 American Institute of Physics. [doi:10.1063/1.3567909]“
“The structure and physical-mechanical properties of films of interpolymeric complexes (IPCs) based on sodium carboxymethylcellulose (Na-CMC) with urea-formaldehyde oligomers (UFOs) of different structure are studied in this article. It is shown that films of IPC have higher rate of deformative-strength properties and elasticity, minimal rate of solutions’ viscosity with equimolar proportion of components of Na-CMC and UFO.