载流圆线圈平面上磁场分布的探讨

根据毕奥一沙伐尔定律推导了载流圆线圈平面上磁场的分布规律，并进行了实验测量．     

修饰铂电极上Zn(Ⅱ)的示波双电位滴定法

制备了锌修饰铂电极,建立了一种新的测定Zn(Ⅱ)的示波双电位滴定法。在1.0 mol/L的六次甲基四胺溶液中(pH=5.5),用制备的修饰铂电极作为双指示电极,以EDTA标准溶液滴定Zn (Ⅱ),利用示波器屏幕上荧光点的显著最大位移指示滴定终点。Zn (Ⅱ)在3.0×10-4 ～2.0×10-3 mol/L时,回收率为99.9%～100.2%。该修饰电极具有良好的稳定性和重现性,在含有1.0×10-3 mol/L Zn (Ⅱ)的溶液中,连续11次测定,所得终点电位值均在10.1 mV左右,其相对标准偏差(RSD)0.5%。应用该方法测定含锌样品,测定结果与指示剂法测定值相符。     

Stability of Tokamak Equilibrium with Internal Transport Barrier against High-n MHD Ballooning Mode

A new eigen-mode equation for the tokamak high-n （the toroidal mode number） ideal magnetohydrodynamic （MHD） ballooning mode in tokamak plasmas is derived to include the toroidal effects that are significant for stability of configurations with internal transport barriers （ITBs）, Fot tokamak equilibria of shift circular flux surfaces, these toroidal effects basically are the finite inverse aspect ratio and the Shafranov shift. The former yields the averaged favorable curvature stabilization while the latter further strengthens this effect, leading to a low shear stable channel connecting the first and second stability regions, and to the shrinkage of unstable region in the （8,α） diagram. The dependence of the critical shear, below which the plasma is stable, on these effects is given. These results are important for understanding the ITB physics to some regards.     

Practical Tactics in Resolution of Racemates via Diastereomeric Salt Formation

A practical tactics in the classical resolutions was illustrated for affording the desired isomers in maximum yields. According to the practical tactics resolution of racemic ethyl nipecotate, Corey lactone and huperzine A intermediate was successfully practiced. The basis of this practicability is the well-known Marckwald principle.     

Szsz型算子同时逼近的点态估计

关于Szasz型算子的线性组合，李秉政[4]给出了同时逼近的点态结果，本文将应用光滑模（0≤λ≤1）推广这些结果.     

微量元素硒的临床应用和研究

简述了近年来硒的临床应用和研究概况，主要内容涉及到硒在抗衰老，治疗病毒性肝炎和肿瘤中的应用以及硒的补充。     

新型含氟液晶—7.4’—[（4-烷氧基—2，3，5，6—四氟基基）乙炔基]苯甲酸4”—烷氧基苯酯的合成及相态研究徐岳连王惟力陈齐闻建勋

设计、合成了4’—[(4-烷氧基—2，3，5，6—四氟苯基）乙炔基]苯甲酸4”—烷氧基苯酯系列的液晶化合物，进行了结构分析，确证其结构，测定了它们的相变温度。确定了它们的液晶相变类型，它们具有向列相和近晶C相。     

Synthesis and Structure of 1—Cyclopentylindenyl Lanthanide（Ⅱ）Complexes and Their Catalytic Behavior for Polymerization of Acrylonitrile

The reaction between K(1‐C₅H₉C₉H₆) and anhydrous LnCl₃ (Ln=Sm, Yb) in the molar ratio of 2:1 in THF with subsequent treatment by Na‐K alloy afforded (1‐C₅H₉C₉H₆)₂Ln‐(THF)_n(Ln=Sm, n=1; Ln=Yb, n=2), while the reaction of Sml₂ with K(1‐C₅H₉C₉H₆) in the molar ratio of 1:2 in THF gave the anionic complex K(1‐C₅H₉C₉H₆)₃Sm(THF)₃. The X‐ray structure of (1‐C₅H₉C₉H₆)₂Yb(THF)₂ showed that central metal Yb is coordinated by two cyclopentadienyl rings of 1‐cyclopentylindenyls and two oxygen atoms from two tetrahydrofuran molecules to form pseudo‐tetrahedral coordinate geometry. All these complexes are active for the polymerization of acrylonitrile.     

材料的红外性能研究和实验数据

介绍一种具有良好红外散射性能的气悬体的优化设计过程。首先根据粒子的散射场表达式 ,算出几种粒子的光学性能参数 ,然后计算一定条件下气悬体对特定入射波长的红外线的最大衰减值。最后给出按一定比例的特定材料加工混合后的气悬体的吸收光谱和对某型号热像仪的干扰曲线