格子点上列完全马氏场的刻划

对于格子点上的马氏规范我们引入“转移律”的概念,并证明了列完全马氏场与转移律之间存在一一对应关系。     

Laves相贮氢合金及其在Ni／MH电池中的研究进展

Ｌａｖｅｓ相贮氢合金是目前贮氢材料研究与开发的热点之一。本文概述了Ｌａｖｅｓ相合金的结构、贮氢机理、贮氢性能以及它在Ｎｉ／ＭＨ电池应用中的最新进展。     

A BOUNDARY ELEMENT METHOD FOR A NONLINEAR BOUNDARY VALUE PROBLEM IN STEADY-STATE HEAT TRANSFER IN DIMENSION THREE

In this paper, a new method of boundary reduction is proposed, which reduces thesteady-state heat transfer equation with radiation. Moreover, a boundary element method is pre-sented for its solution and the error estimates of the numerical approximations are given.     

渗滤的系统及其分析及其数学模型

对于两相体系和多相体系有多孔介质中的渗滤分离过程进行数学模拟，并求解出这一过程．     

聚氯乙烯(PVC)膜固相光度法测定废水中汞

采用一种新型的、高灵敏度且简便易行的聚氯乙烯(PVC)膜固相光度法测定废水中汞含量。此方法基于Hg2+与Br-生成络阴离子HgBr-3,再与碱性染料罗丹明B(RB+)大阳离子形成有色缔合物(RB+·HgBr-3)。此缔合物被PVC膜吸附、富集后,于560nm波长下测定膜的吸光度。此方法线性范围为0.05～1.0μg·ml-1,检出限为0.01μg·ml-1,相对标准偏差小于5%。     

TiO2∶Mo体系的光子雪崩上转换

在 978nm激光二极管的激发下 ,Mo掺杂的TiO2 材料表现出很强的宽带上转换发光 ,该发光来源于 [MoO4]2 - 基团的激发态3T1 ,3T2 能级到基态1 A1 能级的电子跃迁 .通过研究发光强度与抽运功率的关系及上转换发光的上升时间曲线 ,发现TiO2 ∶Mo体系的上转换发光中存在着雪崩机制 ,应用转换函数理论分析了光子雪崩的产生条件和主要特征 ,理论结果和实验数据很好地符合     

Isoscalar Giant Resonances of ^120Sn in the Quasiparticle Relativistic Random Phase Approximation

The quasiparticle relativistic random phase approximationmean field ground state in the response function formalism(QRRPA) is formulated based on the relativistic The pairing correlations are taken into accountin the Bardeen-Cooper-Schrieffer approximation with a constant pairing gap. The numerical calculations are performed in the case of various isoscalar giant resonances of nucleus ^120Sn with parameter set NL3. The calculated results show that the QRRPA approach could satisfactorily reproduce the experimental data of the energies of low-lying states.     

Moessbauer Investigation of the Ferromagnetic Coupling in Copper-Iron Polycyanides

One of the Prussian blue analogs, molecular magnet Cu3^Ⅲ [Fe^Ⅲ (CN)6]2.11.6H2 O, was investigated by Moessbauer spectroscopy. It was found that transition temperature was around Tc = 18.5 K from paramagnetic phase to ferromagnetic phase. The β value of the critical exponent is around 0.338 at magnetic ordering temperature.Therefore, the ferromagnetic coupling interaction of Cu-Fe cyanide could be clearly explained by spin wave theory.     

双阱结构含时量子输运的微扰论及输运方程

利用Lewis-Riesenfeld不变量理论和与不变量有关的幺正变换方法研究了双阱结构含时量子 输运的微扰论.获得了双阱内含时薛定谔方程的精确解的完备集，在此基础上，把双阱与左 右热库的相互作用作为微挠，获得了双阱结构一阶近似下的输运方程，并在绝热近似下提供 了一种用于研究量子输运过程中几何相因子(Berry相因子)的方法. 关键词： 含时量子输运 输运方程 不变量 几何相因子