Learn More
Metabolic changes were investigated by measuring the depletion of dissolved oxygen and the enzymatic activities of sulfur metabolism in Acidithiobacillus caldus (A. caldus) before and after copper stress. The results showed that high concentrations of Cu²(+) have an indirect negative effect on the sulfite oxidase and the APS reductase involved in sulfur(More)
The University Course Timetabling Problem (UCTP) is a ubiquitous NP-Complete combination optimized problem. This paper addresses the problems existing in model formulation and conflict detection efficiency of the current algorithms and proposes a concise and general constraint formulation mechanism of university timetabling, which is based on(More)
  • 1