广义混合隐拟h变分不等式的解的存在性与算法

本文在Hilbert空间中,引入了一类广义混合隐拟h变分不等式.运用变分原理,给出了广义混合隐拟h变分不等式逼近解的迭代算法,证明了这类变分不等式解的存在性定理,同时,得到迭代序列的收敛性.并改进和推广了[6~8]一些已知结果.     

Ising模型的并行计算

以Ising模型为例,介绍有关格点系统的Monte Carlo数值模拟并行算法的设计和编程,并给出在本组建造的PC集群式高性能并行计算系统上的测量结果.本文的结果对格点量子色动力学的大规模数值模拟研究有一定的参考价值     

铜、银和铂原子纳米团簇负热容现象的分子动力学模拟研究

本文采用微正则分子动力学方法模拟研究了铂、铜和银原子纳米团族从固态到液态的熔化过程,得到热容量随温度变化关系,结果表明这三种金属纳米团簇在熔化过程中均出现了负热容现象,并通过对团簇热能随温度的变化关系以及团簇原子数径向分布的分析,探讨了产生负热容现象的微观机制.     

荧光衰减曲线的一种多指数拟合方法

在荧光衰减测量中，总要遇到荧光衰减解卷积，进行非线性参数拟合问题。目前已有的非线性求极小值方法，都对参数估计值非常敏感，而且计算程序运行时间较长。我们建立了一种基于经典的步长加速法实现非线性最小二乘拟合，进行荧光衰减解卷积的方法，按程序给出参数初值，即能解卷积。     

三元乙丙橡胶的13C-NMR定量分析

用13C核磁共振波谱法对三元乙丙橡胶进行了研究，通过图谱中各个峰的积分值，并用特定的计算公式测定了三元乙丙橡胶中乙烯及第三单体乙叉降冰片烯的含量，为红外光谱批量的定量分析建立了基准化的标定。     

链球状纯铁磁粉的磁粘滞性

报道了对激光法制备的链球状纯铁超细磁粉磁粘滞性研究结果。结果表明,n个链球段构成反磁化单元,并等效于一个单轴单畴粒子。不同条件下制备的粉体激活体积的变化趋势与磁性针状氧化物相似。 关键词：     

氯化3-氰-2-羟丙基三甲铵的拆分

研究了利用N-乙酰-L-谷氨酸为拆分试剂，成功的对氯化3-氰-2-羟丙基三甲胺进行光学拆分，一次拆分光学纯度为92％，产率为37％；二次拆分光学纯度达95％，产率为29．1％。     

TREATMENT OF SORBIC ACID MANUFACTURING WASTEWATER BY HYPERCROSSLINKED POLYMERIC ADSORBENT (NDA-150)

1. INTRODUCTION The chemical name of sorbic acid is 2,4-hexadienoic acid. Toxicity of sorbic acid is less than any other preservative, which is internationally acknowledged. Sorbic acid can participate in mans metabolism and can be easily oxidized, then …     

Deep InP Gratings for Opto-Electronic Devices Etched by C12/CH4/Ar Inductively Coupled Plasma

Deep InP gratings are etched by C12/CH4/Ar inductively coupled plasma （ICP） at room temperature. A comparison is made between SiNz mask patterns formed by wet and dry etching. SF6 reactive ion etching is adopted for smooth and vertical sidewall. The etching conditions of C12/CH4/Ar ICP are optimized for high anisotropy, and a 1.7-μm-deep InP grating with an aspect ratio of 10：1 is demonstrated. The technique is then used for the fabrication of 1.55-μm laterally coupled distributed feedback A1GMnAs-InP laser.     

NiCl2bpy催化卤代苯的电化学偶联及其机理研究

Electrochemical coupling of phenyl halide catalyzed by NiCl_2bpy in DMF has been investigated in this paper.Stainless steel was used as cathode and zinc as anode.Effects of potential,temperature and catalyst on electrolyseswere studied to optimize the electrolytic conditions,with the maximal isolated yield under potentiostatic electrolysisto be 85%.Cyclic voltammetry of NiCl_2bpy in the presence of phenyl bromide has been studied and mechanisms,concerned with several kinds of nickel complex,have been summarized.