Butadiene is a very important petrochemical base material and monomer for syntheticpolymer materials.
TiO2-CdS composite material was successfully synthesized in-situ sulfidation using polystyrene(PS)as a template,tetrabutyl titanate as a titanium source,and cadmium acetate as a precursor,by sol-gel m
化肥是重要的农业生产资料,是粮食的“粮食”,在促进粮食和农业生产发展中起着不可替代的作用,我国是化肥生产和使用大国.到2015 年底,全国化肥产量高达7627 万吨,2016 年仍达7004.9 万吨,虽然累计下降4.8％,仍稳居世界第一化肥大国地位.
MoS2 is a very promising energy storage electrode material.However,the intrinsic multi-layer pure metal MoS2(M-MoS2)is rarely studied for supercapacitors.
Synthesize a series of dibenzodiazepine derivatives by exploring the method for the construction of the skeleton of dibenzodiazepine compounds and introducing N-methylpiperazine.
物质点法(MPM)是Sulsky、Chen 等在上世纪90 年代中期提出的一种无网格法[1]。其采用拉格朗日质点和欧拉网格双重描述，其中质点携带所有信息(如质量、速度、应力等)，背景网格仅用于动量方程的求解和空间导数的计算。物质点法自提出以来在超大变形、碰撞、爆炸、多尺度分析等多方面受到了越来越多的关注。