Xu Chang

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Microalgal photo-biocatalysis is a green technique for asymmetric synthesis. Asymmetric reduction of nonnatural prochiral ketones to produce chiral alcohols by microalgal photo-biocatalysis was studied in this work. Acetophenone (ACP) and ethyl acetoacetate (EAA) were chosen as model substrates for aromatic ketones and β-ketoesters, respectively. Two(More)
  • Yang Wenhua, Liu Yepang, Xu Chang, Cheung, Citation Yang, W H Liu +1 other
  • 2015
The goal of this survey is to summarize the state-of-the-art research results and identify research challenges of developing and deploying dependable pervasive computing systems. We discuss the factors that affect the system dependability and the studies conducted to improve it with respect to these factors. These studies were categorized according to their(More)
  • Xu Chang, Liu Yepang, Cheung S C, Cao Chun, Lv Jian, Citation Xu +2 others
  • 2013
Internetware applications are emerging and being widely used. They can adapt their behavior based on environmental contexts and deliver smart services. These contexts can be subject to various noises, which cause them to be inaccurate, incomplete, or even to conflict with each other. This is known as context inconsistency problem. Context inconsistency can(More)
Groundwater level is an important indicator to measure groundwater resources and their exploitation amount. The accurate prediction of groundwater level is important for efficient use and management of groundwater resources. Because of mainly affected by natural and human factors, groundwater level has evident randomness. So, building stochastic model for(More)
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