The stone inscription art is a gem of chinese cultural treasure. The author introduced the stone inscriptions of Qinshihuang and Qinshihuang - 2 in this article
Multiarm star block copolymers hyperbranched polyethylenimine-b-poly(2-hydroxyethyl methacrylate) (HPEI-b-PHEMA) with average 28 PHEMA arms have been prepared b