In this paper, the amplification factor (ks ) of peek ground motion with different exceedance probability in class Ⅱ and Ⅲ sites over Shandong Province was esti
Aim To find the original active compounds from three medicinal plants of Menispermaceae family in Qinling Montain,Shaanxi,China.Method Several kinds of isolatio
During the fourth Chinese National Arctic Research Expedition cruise in summer 2010,a time-series observation was carried out to examine the response of nutrien