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To investigate the effect of heroin on purine nucleotides catabolism, a rat model of heroin administration and withdrawal was established. Concentrations of uric acid, creatinine, and urea nitrogen in plasma and ADA in plasma, brain, liver, and small intestine were tested. When two heroin administration groups were compared with the control group, the concentrations of plasma uric acid and ADA in...
Nowadays a directional shift appears in the study of e-learning technologies. The release of IMS Learning Design (IMS LD) specification becomes the representative of this significant development. In this paper, we introduce the specification and discuss the tools related to IMS LD.
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.