[Establishment of a recombinase-aided isothermal amplification technique to detect specific gene fragments].

Objective: To establish a novel method for the detection of specific gene fragments by recombinase aided isothermal amplification (RAA).

Methods: The gene fragment SjG28 of was selected as the target gene fragment to be detected, and the primers were designed according to the mechanism of RAA reaction. The reaction of isothermal amplification of was established and optimized.

The Antibacterial Activity of Ta-doped ZnO Nanoparticles.

A novel photocatalyst of Ta-doped ZnO nanoparticles was prepared by a modified Pechini-type method. The antimicrobial study of Ta-doped ZnO nanoparticles on several bacteria of Gram-positive Bacillus subtilis (B. subtilis) and Staphylococcus aureus (S.

Working capital management, corporate performance, and strategic choices of the wholesale and retail industry in China.

We examine the influence of strategic choice on working capital configurations and observe how the relationship between working capital ratio and operational performance differs depending on strategy. By clustering the strategic factors of the wholesale and retail industry, we find three categories of strategies: terminal market strategy, middle market strategy, and hybrid strategy. Using the panel data of the listed companies of the wholesale and retail industry as our sample, we analyze the differences in the ways companies configure working capital, the speed with which working capital adjusts to its target, and the effects of working capital on performance for companies that make different strategic choices.