Objective To analyze the problems of API export in China and to study the current international and domestic trading env......

This paper describes the application of principal component analysis (PCA) and artificial neural network (ANN) to predic......

通过对汕头市2006-2013年空气污染指数和污染物浓度进行统计分析，以图表形式直观展示空气环境质量的年际、月际、日际变化情况。结......

With the ever increasing complexity of active pharmaceutical ingredient (API) preparations, more potential genotoxic imp......