糖尿病人微量元素谱的多元分析

胜多元分析了糖尿病患者样品中微量元素，了解微量元素与糖尿病的关系，并提出了新见解。用ＩＣＰ－ＡＥＳ测定糖尿病患者血、发中１８种微量和宏量元素 ；结果经多元分析处理，找到血、发共有的相关链：Ｍｎ－Ｎｉ－Ｃｕ－ＳｒＴｉ，它与患者年龄、性别、样品无关，看来它提供了机体的特殊信息。     

8—氮杂腺嘌呤的极谱伏安行为

以多种电化学方法研究了８－氮杂腺嘌呤的极谱伏安行为在ＨＡｃ－ＮａＡｃ缓冲溶液中的极谱伏安行为，它产生了两个良好稳定的线性扫描伏０发峰，峰电位分别为－１．０８Ｖ和－１．３４Ｖ，实验表明，Ｐ１具有弱吸附性质，Ｐ２具有催化氢波性质，Ｐ１峰高和８－ＡＡ浓度在１×１０＾－８－８×１０－＾４ｍｏｌ／Ｌ范围内呈良好的线性关系。     

家兔动脉粥样硬化模型微量元素谱的计算机多元分析

为了查明微量元素谱与动脉粥样硬化症的关连，用多元分析研究了白兔动脉粥样硬化模型中的生物样品微量元素谱。ＩＣＰ－ＡＥＳ测定动脉粥样硬化模型和对照组的兔器官和 组织中１９种元素。因子分析法处理数据，得到一系列因子得分分布图，各图象表明动脉粥样硬化组与对照组的样品点分布在图上不同区域，且两组样品点可分辨。     

Gamma irradiation of high density poly(ethylene)/ethylene‐vinyl acetate/clay nanocomposites: possible mechanism of the influence of clay on irradiated nanocomposites

A further study on mechanical properties and morphology evolution of high density poly (ethylene)/ethylene‐vinyl acetate/and organically‐modified montmorillonite (HDPE/EVA/OMT) nanocomposites exposed to gamma‐rays (0–200 kGy) has been achieved. The results showed that nanocomposites have superior irradiation‐resistant properties to HDPE/EVA blend in mechanical properties. A transmission electron microscope study verified that a face‐face ordered nanostructure had been induced by gamma‐rays. The aim of this paper is to provide a possible mechanism on how the OMT influences the general properties of irradiated nanocomposites, based on the results of thermal, flammability and mechanical behavior. Three facts are postulated to be responsible for the mechanism. The first is the segregation of nano‐dispersed clay layers not only reduces polymer oxidation but prevents crosslinking reactions. The second is the nanostructure evolution induced by gamma‐rays, which may impart nanocomposites improved elasticity. The last is due to the Hofmann degradation, whose degraded products have opposite roles, accelerating polymer oxidation or promoting crosslinking reactions. These facts interact as well as compete with others. The properties of the nanocomposites strongly depended on the prevalent effects developing with increasing irradiation doses. Copyright © 2005 John Wiley & Sons, Ltd.     

高效液相色谱法分析测定甘草、甘草酸制品及中成药中β－型甘草次酸的含量

报道了应用高效液相色谱法，ＳＰＣ＿（１８）色谱柱，甲醇－水－冰醋酸（７９：２０：１，Ｖ／Ｖ）流动相，ＵＶ２５４ｎｍ，以标准甘草次酸为外标，测定了甘草、甘草酸制品及中成药中甘草次酸的含量。本法适用于测定不同中成药及甘草酸制品中的甘草次酸的含量，方法简便，快速准确。     

Heating behavior and crystal growth mechanism in microwave field

A simple microwave solid-state reactor was designed on the basis of a domestic microwave oven by using graphite powder as heating medium. The heating behavior of the reactor was studied by using an on-line computer to monitor the real-time temperature during irradiation. It was found that the temperature (T) was related to the time (t) and that microwave power depended on the duty cycle (x) of microwave irradiation. Two empirical equations were proposed and could be applied to the similar microwave solid-state reactors. Four inorganic layered materials, LiV(3)O(8), KNb(3)O(8), KTiNbO(5), and KSr(2)Nb(3)O(10), were successfully synthesized in the designed reactor at a suitable heating rate and temperature that were fully controlled by the empirical equations. Characterization results of X-ray diffraction (XRD), Fourier transform infrared (FTIR) and Raman spectroscopy, and scanning (SEM) and transmission (TEM) electron microscopy indicated that the phases of samples prepared by traditional and microwave methods were in good agreement; nevertheless, the heating nature and the morphologies of products were quite different. The samples synthesized in the microwave field had crystallographic defects and showed an incompactly stacking structure of nanosheets. Due to the rapid formation of crystallites and different extended growth rate along the crystal axis of the products in microwave field, the crystal growth mechanism of layered metal oxides was not according to that of the traditional method and is briefly discussed.     

溴酸钾氧化吡口罗红G催化动力学光度法测定痕量NO-2

研究了在磷酸介质中亚硝酸根催化溴酸钾氧化吡口罗红Ｇ而使其褪色，建立了催化动力学光度法测定痕量亚硝酸根的新方法，测定范围为０．２～２０μｇ／ｍＬ，检出限为０．２ｎｇ／ｍＬ，用于食品和水样中的亚硝酸根测定获得满意结果     

五大连池矿泉微量元素含量对疗养康复的医疗价值研究

五大连池矿泉属铁硅质、重碳酸盐镁钙型复合型医用矿泉水，含有丰富的宏、微量元素，具有很高的医疗保健价值，可治疗各型慢性胃炎、胃十二指肠溃疡、结肠炎、银屑病、风湿性关节炎、缺铁性贫血、高血压病、植物神经功能紊乱等多种疾病，广泛应用于临床，收到良好效果。     

Molecular activation analysis for iridium

Molecular activation analysis (MAA) of iridium in geological samples, based on a combination of a newly-developed chemical sequential dissolution method and radiochemical and instrumental NAA, was described to study the distribution pattern and chemical species of iridium in various fractions (soluble carbonate, metal, sulfide, oxide, silicate and acid-insoluble residue) of geological boundary samples, meteorites, ultrabasic rock and volcanic lava. The correlations of Ir with Au, Os, siderophile, chalcophile and lithophile elements were discussed. In addition, the role of kerogen and noble-nugget in the Ir enrichment was scrutinized. The MAA results of Ir favors a mixed effect of asteroid impact, volcanic eruption and post-depositional redistribution to interpret the extant Ir anomaly at Cretaceous-Tertiary boundary layer.