The causes for the extracting rate of gold and silver from immersed copper sediment influenced by cyaniding conditions are chiefly investigated,and the best cyaniding conditions to increase the extracting rate of gold and silver are proposed as well,with the purpose of providing basis for industrial extraction of gold and silver.

The results show that the optimum cyanide-degrading conditions are as follows: temperature 20 - 30 ℃,pH 5 - 7, rotating rate 100 - 180 r/min,inoculum 6% - 20%.

The effects of electrode activation condition,current density,electrolyte temperature on electrolytic reduction are discussed.

The application of Doolittle algorithm in condition optimization

Reaction condition optimization and performance evaluation of DCTS

The strategy of level optimization and condition optimization were discussed in different productive technical condition.

Screening of high-esterase-producing strains and the optimization of fermentation;

Transforming Transcription Factor ABP9 into Soybean and Optimization of the Transformation System;

Study on Optimization of Nano-silver Prepared by Method of Liquid Reduction;