Objective:To study the change rule of decocting quantity of the effective components in Amomi fructus and Amomi fructus rotundus with decocting time to determine whether or not decocted later and optimal decocting time. Methods:The herbs were extracted by the traditional water decoction, and at different time points, sampling was carried out. Using camphor and eucalyptol as the index components, the change rule of decocting quantity of the effective components with the decoction time under the condition of single and combined decoction was investigated. Results:When the decoction time of Amomi fructus was within the range of 3-6 min, the total amount of camphor in the decoction reached relatively high value, and the total amount lost more than 45% when the decoction time exceeded 10 min. Amomi fructus rotundus boiled for a short time below 2 min, and when the decoction time was more than 5 min, more than 50% eucalyptol lost. Conclusion:Amomi fructus and Amomi fructus rotundus should be decocted later with decocting time within 3-6min and below 2 min, respectively. The analytical method is reliable and precise in the quality control of relative decoction.

Objective To develop an instrument that detects the endurance of an animal hanging on a bar during medical and pharmaceutical scientific experiments .Methods One pair of opto sensors were used for signal conversion .A solenoid valve device was used for water level .A 51-Series microcontroller was used to control the experimental setup and record the results .Results We have developed a microcontroller-based experimental instrument that can automatically detects the endurance of an animal hanging on a bar during medical and pharmaceutical scientific experiments .Our experimental results with 28 mice indicated that the applicability of the instrument is good .Conclusion The instrument provides an innovative tool for detecting the endurance of an animal .