named yimelysin, was purified from the cutture supernatant by three column chromatographies. About 150mg of purified vime]ysin -'as obtained from 3.3 Iiters of the culture supernatant with a high yield of 57'ZF. The purified vimelysin showed a single protein band on SDS-PAGE with molecular vveight of 38,OOO. The isoelectric point of vimel)'sin was 4.3 by isoelectric focusing. The optimum pH of ...

Empirical studies on coordination of economic activities focused on the two polar cases of governance mode, namely vertical integration and market exchanges. Whether firms should be vertically integrated or lever market exchanges in the face of change is, however, debated. Two positions have emerged. Some scholars argue that the vertically integrated firm is the appropriate mode of coordination...

This study addresses the optical and electrical properties of ZnO thin films doped with Al, V and Nb (ZnO:Al, ZnO:V and ZnO:Nb, respectively) deposited by r.f. magnetron sputtering in Ar atmosphere. The films are deposited on glass substrates without heating and heated at 100C, 150C and 275C. The optical spectra of transmittance and reflectance are measured and the optical band gap of the films...

Studies were carried out to evaluate the initially preformed density and initial aspect ratio on the densification behavior of sintered Zinc and Zinc Oxide composite. The preform possessed 0.85 is the initial density. Aspect ratio for three different oxidizing temperatures (at 150°C, 200°C and 250°C) varied from 0.4 to 0.85. Properties of Zinc-Zinc Oxide composites with respect to linear strain...