胶束电动毛细管色谱法测定生脉注射液中五昧子酯甲的含量

生脉注射液由红参、麦冬、五味子等药组成，具有益气养阴、复脉固脱功效。主要用于治疗气阴两亏、脉虚欲脱的心悸、气短、四肢厥冷、脉欲绝、心肌梗塞、心源性休克及感染性休克等疾病。五味子有敛肺、滋肾、生津和涩精等功能，是常用中药之一，其乙醇提取物可用于治肺虚、喘咳、梦遗、滑精、久泻久痢等。毛细管电泳是近年发展起来的高效、快速、微     

反相液相色谱用球形共聚物柱填料

采用新颖聚合工艺制备用于反相高效液相色谱柱填料的乙基苯乙烯-二乙烯苯球形共聚物,不需使用备有高速搅拌的混匀器和特殊的筛析设备,聚合物粒径的95％在3～7μm之间,测算了渗透性、柱效和峰不对称性等柱参数,并通过分离实例说明该填料对胺类、酚类和芳烃类具有优良分离性能。     

Second-order Nonlinear Optical Properties of a Series of Azulene Derivatives

The first hyperpolarizabilities of a series of novel azulenic-barbituric acid chromophores have been studied by using 12 excitation wavelengths, ranging from 900 to 1907 nm. The dispersion relation of the first hyperpolarizabilities of chromophores holds the same tendency as the experimental results. In addition, the static first hyperpolarizability β0 of molecules was calculated by means of the Sum-Over-States (SOS) expression and the two-level formula respectively. The results show that these molecules possess large static first hyperpolarizabilities and the, β0 value increases as the donor or acceptor strength enhances; the distorted degree of molecules has also an important influence on the β0 value.     

POLYNOMIAL SOLUTIONS TO PIEZOELECTRIC BEAMS (Ⅰ)——SEVERAL EXACT SOLUTIONS

IntroductionDue to its excellent piezoelectric properties,composites made of piezoelectric materialsare found widespread applications and attracted more attentions[1-10].Because of materialanisotropy and couplingbetween mechanical deformation and electric…     

微波等离子体炬原子发射光谱法（MPTAES）测定铜的研究

本文较详细研究了用微量进样-MPTAES法对铜的测定,考察了各实验参数对测铜的影响。该方法的检出限为2.1ng/ml。对实际样品的测定,取得了令人满意的结果。     

Electron Transport Property of CdTe under High Pressure and Moderate Temperature by In-Situ Resistivity Measurement in Diamond Anvil Cell

In situ resistivity measurement has been performed to investigate the electron transport property of powered CdTe under high pressure and moderate temperature in a designed diamond anvil cell. Several abnormal resistivity changes can be found at room temperature when the pressure increases from ambient to 33 GPa. The abnormal resistivity changes at about 3.8 GPa and 10 GPa are caused by the structural phase transitions to the rock-salt phase and to the Cmcm phase, respectively. The other abnormal resistivity changes at about 6.5 GPa, 15.5 GPa, 22.2 GPa and about 30 GPa never observed before are due to the electronic phase transitions of CdTe. The origin of the abnormal change occurred at about 6.5 GPa is discussed. The temperature dependence of the resistivity of CdTe shows its semiconducting behaviour at least before 11.3 GPa.     

不同结构Injiferter引发苯乙烯聚合反应的研究

以不同结构的含氯化合物与铜试剂反应合成了４种链引发－转移－终止剂（Ｉｎｉｆｅｒｔｅｒ）。研究了它们引发苯乙烯的聚合反应过程,重点考察了Ｉｎｉｆｅｒｔｅｒ结构对聚合产物的影响。采用核磁共振氢谱和凝胶渗透色谱对聚合物分子量和分子分布进行了测定。结果表明：Ｉｎｆｅｒｔｅｒ结构对聚合反应速率、分子量实测值与理论值间的对应关系及分子量分布均有明显影响,当其形成的初级自由基上带有使其稳定的基团时,经发效率就高     

A Relative Study on Two-photon Absorption Properties of C60 and C70

We have theoretically investigated the one- and two-photon absorption properties of C60 and C70 using the ZINDO method. From the results it is suggested that the one-photon absorption spectra are in agreement with the experimental observations. It is found that the maximum TPA cross section of C70 is more than twice that of C60,which is consistent with the experimental results. A notable point is that the TPA process of C60 is different from that of C70 as well as other ordinary conjugated molecules.     

质谱法鉴定定价种化学添加剂中阴离子表面活性剂

本文提出用ＦＡＢ－ＭＳ和ＤＣＩ－ＭＳ法对两种工业化学添加剂中阴离子表面活性剂成份的鉴定方案，方法简便，并对类似未知物的鉴定有参考价值。所得结果为其它方法和应用试验进一步证实。