Coagulation chemistry

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  • More than 200 polymers are used for electrospinning like silk fibroin (Zarkoob et al., 2004; Sukigara et al., 2003; Jin et al., 2004), collagen (Mathews et al., 2002), chitosan (Ohkawa et al., 2004), gelatin (Ma et al., 2005) etc. In the field of tissue engineering electrospinning technique is applied for the preparation of nanofiber scaffold design. The process is very versatile in terms of use of polymers, non-invasive and does not require the use of coagulation chemistry or high temperature for fiber generation.

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  • Eur. J. Biochem. 269, 5950–5955 (2002) Ó FEBS 2002 doi:10.1046/j.1432-1033.2002.03323.x The most active factor VIIa (FVIIa) variants identified to date carry concurrent substitutions at positions 158, 296and 298 with the intention of generating a thrombin-mimicking motif, optionally combined with additional replacements within the protease domain [Persson, E., Kjalke, M. & Olsen, O. H. (2001)Proc. Natl Acad. Sci. USA98, 13583– 13588]. Here we have characterized variants of FVIIa mutatedat one or twoof these positions toassess the relative importance of the individual replacements.

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  • Wastewater of the dyeing unit of the Hanoi textile-dyeing Company (Hanosimex) was treated by coagulation method with the HBM/KT powder and by catalytic oxidation with the hydrogen peroxide (H2O2) over HBM/TB catalyst. HBM/KT coagulator and HBM/TB catalyst were prepared at the Laboratory of Surface Sciences and Catalysis, Institute of Chemistry, Vietnamese Academy of Science and Technology.

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