加强基础性研究，推进人才、项目、基地一体化建设

本文论述了加强基础研究，推进人才、项目、基地一体化建设的四项原则。     

LA群新系列（I）

This paper shows thawt prime power groups which are cyclic extensions of elementary abelian groups are all LA-groups.     

延时可控高压脉冲发生器的设计

将数字延时及高压脉冲形成电路结合在一起构成高精度的高压脉冲发生器，用于触发Marx发生器及高压脉中触发装置，也适用于高压雷管起爆装置。以CPU 8031为控制核心，采用VE4137A型高电压，大电流，低抖动，快速氢闸流管构成高压脉冲形成级，MOSFET作为驱坳级。延时可控，延时范围为10ns-599μs，连续可调，数显，高压脉冲幅度为5－30kV，前沿小于16ns，脉宽大于300ns，抖动小于10ns。     

IMMOBILIZATION OF LIPASE FROM PORCINE PANCREAS ON POLY （METHYL ACRYLATE）COPOLYMERS

A series of poly(methyl acrylate) copolymers of different pore structures were synthesized and functionalized by polyethylene polyamine.The lipase from porcine pancreas was adsorbed on these polymer carriers. It was found that the proe structure and functional group were basic factors which affected the activity of immobilized lipase,The optimal conditions for adsorbing lipase were studied and the effects of pH,ionic strength and temperature on the immobilized lipase were compared with those on the dissolved lipase.     

水热合成ZnS:Cu,Al纳米晶体及其全色发射光谱特性

报道了水热法(200℃)直接合成的ZnS:Cu,Al纳米晶及其发光特性.ZnS:Cu,Al纳米晶粒径约15 nm,尺寸分布窄,分散性好,具有纯立方相的类球形结构.借助X射线能谱法(EDX)和原子吸收光谱仪,研究了样品中S,Zn和Cu的含量并详细研究了光致发光(PL)光谱的特性.结果证明存在大量Zn空缺,Cu离子经过水热处理后已掺入到ZnS基体中.PL光谱特性为:样品的激发谱为宽带谱,337 nm激发时样品发出很强的绿光,370～420 nm之间任意波长激发时,发射谱均为宽带谱,且它们基本重合.表明此材料作为近紫外(370～410 nm)发光二极管((n)-UV(370～410 nm)LED)用荧光粉及全色荧光粉具有很大的应用潜力.样品在375 nm激发下全色宽带发射谱是460,510和576 nm带光谱的高斯叠加.当Cu/Zn,Cu/Al和S/Zn分别为3×10-4,2和3.0时,于室内照明条件下肉眼可观察到白色发光.