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SummaryThe polyamide 6 (PA6)/K resin (K) blends of some kinds of compositions have been prepared by extrusion. During the process of tensile testing, we found that the PA6/K blend with 10% PA6 has the usual stress-strain behavior, and that the samples obtained with 30% and 50% PA6 show apparently double yielding behavior, while the PA6/PS blend does not show the double yielding phenomenon at all same...
H9N2 viruses have circulated in domestic poultry in Mainland China since 1994, and an inactivated vaccine has been used in chickens to control the disease since 1998. The present study analyzed 27 H9N2 avian influenza viruses that were isolated from chickens and ducks from 1996 to 2002. Infection studies indicated that most of the viruses replicate efficiently but none of them is lethal for SPF chickens...
To survive successfully in today's competitive online game markets, Chinese online game companies need to determine who the target customers are and what motivates them. However, previous research didn't focus on identification of critical variables for market segmentation in online game market. Additionally, the traditional clustering methodologies have not provided a unique clustering nor determined...
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