StureGate：a Data Model for the ATLAS Software Architecture

ATLAS[1] has recently joined Gaudi,an open project to develop a data processing framework for HEP experiments[2],The data model is one of the areas where ATLAS has extended more the original Gaudi design to meet the experiment‘s own requirments.This paper describes StoreGate,the first implementation of the ATLAS Data Model.     

不同天鹅绒发射性能研究

利用扫描电镜对五种不同结构的天鹅绒进行了观察，用实验方法进研究了各种天鹅绒样品的发射性能，并对它们进行了分析比较。     

在近代物理教学中素质教育的探索

本主要介绍在近代物理教学中，对康普顿效应及光电效应的再解释，把“量子场论”的观点引进大学基础物理，为学生打开一个对物理学前沿理论了解的窗口。     

PREPARATION OF POLY （LACTIC ACID） THROUGH THIONYL CHLORIDE ACTIVATED POLYCONDENSATION

A two-step process was used to synthesize the high molecular weight poly (lactic acid) using thionyl chloride as an activator for the polycondensation of prepolymer of lactic acid.The products were characterized by GPC,DSC and 1H-NMR.Poly(L-lactic acid)(PLLA) with molecular weight Mw:32875 was obtained when thionyl chloride was used.while low molecular weight PLLA MW:7350 was yielded without thionyl chloride.Effects of the concentration of thionyl chloride,polymerization time and bases on the molecular weight of poly(lactic acid) were investigated.In DSC scans the glass transition temperatures(Tg)of the resulting polymers varied from 25.3 to 57.6℃.and the Tg of poly(L-lactic acid)was higher than that of poly (D,L0lactic acid)(PDLLA).The melting points of poly(L-lactic acid)and poly (D,L-lactic acid) could not be found unless the polymers were obtained by thionyl chloride activator.     

ADSORPTION OF LDL ON THE MODIFIED CHITOSAN

In this paper,the selective adsorption of LDL on chitosan modified with PEG and Asp.was studied.The adsorption rate of LDL and HDL on the double modified chitosan was 57% and 12% respoectively,The results shown that the double modified chitosan can be used a adsorbent for selective binding to LDL,this work may help to develop functional columns for hemoperfusion.     

THE EFFECT OF MEDIUM ON ADSORPTION OF FREE ACID BY CROSSLINKED CHITOSAN RESIN

The adsorption of free acid of low concentration by crosslinked chitosan resin was followed by electrochemical experimental technique.The effect of acid concentration and the media on adsorption was discussed.The experimental results show that both the apparent rate constant and the interaction energy between the adsorbent and adsorbate are decreased while the concentration of hydrochloric acid is increased.In the adsorption system.the adsorption was effected by addiiton of organic solvent.     

苯乙烯／甲基丙烯酸和苯乙烯／甲基丙烯酸（β—羟丙酯）嵌段共聚物的表面动

通过测定表面动态接触角研究了两亲性的苯乙烯／甲基丙烯酸嵌段共聚物（PS－b－PMAA）和苯乙烯／甲基丙烯酸（β-羟丙酯）嵌段共聚物（PA－b-PHPMA）的表面动态行为及温度、嵌段长度比等因素对其值的影响，讨论了聚合物表面当接触介质改变时链段或基团的再取向行为和表面性质。     

A NEW MODIFIEK LINEAR DRIVING FORCE（MLDF）MODEL

Linear driving force (LDF) model is widely used in a diffusion process,However,this model has inherent weakness.When the dimensionless time is less than 0.1 its relative error is up to 95%.In this paper,a new concentration profile is proposed.and then a new modified LDF model(MLDF) is deduced.Compared with the exact solution of intraparticle diffusion equation,the transient volume-average amount adsorbed calculated from the MLDF is more accurate than that calculated from the LDF model.If one takes ±10% relative error for the limit of validity of approximation,the new model is valid when the dimensionless time is just larger than 0.0002,while the LDF model is not valid until the dimension time is large than 0.05,The new model is superior to the LDF model.The new concentration profiles corresponding to the MLDF model are much close to the exact concentration profiles within a particle than the parabolic profiles corresponding to the LDF model.