HPLC法测定醋酸纤维素膜材料界面参数

以醋酸纤维素(CA-398)膜材料为填料,用HPLC法测定无机溶质(如氯化钠,硫酸镁)和多官能团的有机溶质(如糖等)的保留体积V_R’,平衡分配系数K_A’。由HPLC实验数据来确定聚合物膜材料界面参数。     

铝的激发光谱的测量

用１２０ｋｅＶ的Ａｌ＋离子与１０μｇ／ｃｍ２的碳箔相互作用，研究ＡｌⅠ、ＡｌⅡ和ＡｌⅢ的激发光谱，其结果与其它实验进行了比较。     

类Ne碘离子的3d－2p跃迁及其伴线结构的理论研究

在对类Ｎｅ、类Ｎａ、类Ｍｇ和类Ａｌ碘离子的３ｄ－２ｐ跃迁波长和跃迁几率详细计算的基础上，考虑了各个谱线的加宽和谱线间的重迭效应。在局部热动平衡近似和高温条件下，模拟了各离化态离子共同存在时产生的光谱结构，给出了具有带状分布特征的伴线峰的中心波长和半最大全宽度。讨论了这种光谱在等离子体状态诊断方面的应用。     

临界电流密度的分布对高温超导体中传输交流损耗的影响

基于Norris方程和Bean临界态模型,假定临界电流密度沿高温超导圆柱体半径的非均匀分布方式,从定量的角度研究了临界电流密度沿高温超导圆柱体径向分布方式的不同对传输交流损耗的影响.考虑临界电流密度沿径向的包括阶梯式和逐点变化式等多种分布方式,通过引进表征超导体内临界电流密度非均匀分布的强弱差异程度的无量纲参数λ推导出临界电流密度非均匀分布方式下高温超导体中传输交流损耗的解析表达式.结果表明临界电流密度阶梯式分布对损耗的影响和临界电流密度逐点变化式分布的情况在损耗曲线的变化趋势和量级上有明显的区别并且随着传输电流的增加临界电流密度的非均匀分布方式对传输损耗的影响也越显著.     

波长40—60nm的高电离态硫离子某些能级跃迁谱线的实验研究

波长４０－６０ｎｍ的元素高电离态离子光谱实验中,观测到１０多条光谱线,这些谱线是ＳＸＩ到ＳＸⅣ离子的一些激发能级发射的,其中９条谱线还没有人报道实验结果,实验分析结果与理论符合得较好。     

EFFECT OF MORPHOLOGICAL STRUCTURE OF AMINOMETHYL POLYSTYRENE RESIN ON THE CATALYTIC PROPERTIES OF POLYMERSUPPORTED RUTHENIUM COMPLEXES

Polymer-supported ruthenium complexes ■-Phen-Ru-①,■-Phen-Ru-②,■-Phen-Ru-③,■-Phen-Ru-④, ■-Phen-Ru-⑤,■-Phen-Ru-⑥and ■-Phen-Ru-⑦were prepared using aminomethyl polystyrenes of different morphological structures as supports.A variety of alcohols were oxidized efficiently into the corresponding ketones, carboxylic acids or aldehydes with iodosylbenzene (PhIO) catalyzed by aminomethyl polystyrene-supported ruthenium complexes under mild reaction conditions in acetonitrile.The influences of morphological struct...     

Fatty acid profile of <Emphasis Type="Italic">Trichosanthes kirilowii</Emphasis> Maxim. seed oil

Fatty acid profile data for refined cold-pressed Trichosanthes kirilowii Maxim. seed oil, in comparison to other commercially available oils — olive, rapeseed and camellia, are presented. Trichosanthes kirilowii Maxim. seed oil has high oleic and linoleic acid content and high polyunsaturated acid content. Squalene elutes as a distinct peak in the GC chromatograph. For a positive identification, MS detection was used. In the samples analyzed, squalene occurred in the range of 57.4–68.2 mg g⁻¹.     

Effect of SDBS on interfacial electron transfer at the liquid/liquid interface by thin layer method

The effect of an adsorbed anionic surfactant sodium dodecyl benzene sulfonate(SDBS) on electron transfer(ET) reaction between ferricyanide aqueous solution and decamethylferrocene(DMFc) located on the adjacent organic phase was investigated for the first time by thin layer method.The adsorption of SDBS at the interface resulted in a decay in the cathodic plateau current of bimolecular reaction with increasing concentrations of SDBS in aqueous phase.However,the rate constant of electron transfer(k_(et)) i...     

相对论和非相对论理论模型研究奇异核的性质

采用相对论和非相对论理论模型可描述奇异核的性质 .相对论平均场理论预言了2 6,2 7,2 8P存在一个质子晕 ,而27,28,29S存在两个质子晕 .最近 ,MSU的最新的实验发现了2 6,2 7,2 8P核存在一个质子晕.采用相对论 Hartree- Fock理论研究了 Fock项和矢量介子对奇异核性质的贡献,研究表明交换项和矢量介子对非常丰中子核性质的影响非常不同于对稳定线附近核性质的影响.同时,采用形变的Hartree- Fock- Bogoliubov理论研究了某些轻核同位素链的性质和形变.