本文通过对荣华二采区10...

为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......

为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......

为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......

我们以1,4-二正丙氧基-2,5-双甲氧甲基苯为原料用对甲苯磺酸为催化剂在二氯甲烷中制备了1,4-双正丙氧基柱[5]芳烃,1,4-双正丙氧基......

1 Introduction The remarkable and highly diverse biological activities exhibited by proteins rely on the unique capacity......

1IntroductionChiral recognition of substrates is one of the most characteristic phenomena of biological activity. And on......

Three novel C2-symmetric macrocycles containing pyridyl units have been prepared by the cyclic condensation of chiral di......

On the basis of the C-C coupling reactions of dibenzo [ fg, op ] naphthacene bistriflate, which was obtained by the cond......