Assembly of Ag（I） Polymers with Thioether-S Binding and Homochiral Helices

A novel coordination polymer [Ag(pyta)]n (pyta^-=4-pyridylthioacetate) containing bound thioether sulfurs and single-stranded helical chains has been synthesized and structurally characterized.     

规避风险,SP可持续发展

信息产业部推动SP代码“四网合一”，中国移动要求短信定制业务“二次确认”，“七月新政”正强烈震荡着整个SP行业：SP这棵促使中国电信市场发展的独苗，是否能健康、安全地度过难关取决于他们自身的免疫力和外界的环境是否提供了他们生存的空间。一些行业专家和SP代表指出，鱼龙混杂的SP暴利发展时代已经过去，中国的SP要想自救，必须懂得如何转型，如何规避政策、产业技术、投资等诸多风险。     

闪光灯泵浦Cr：LiCAF激光器的实验研究

实现了闪光灯泵浦Ｃｒ：ＬｉＣＡＦ激光器的脉冲运转．在最佳耦合输出条件下获得斜率效率为２．２０％、转换效率为１．３６％的激光输出。研究结果表明．对于闪光灯泵浦的Ｃｒ：ＬＩＣＡＦ激光器．较高的掺杂浓度有利于降低激光阈值并提高输出能量和效率。实验中观察到激光脉冲尖峰振荡中的类自调Ｑ现象。     

Cs~（2＋）F~－离子准分子的相对论电子束激励

由高能电子束激发成功地观测到来自内壳层电离态Ｃｓ２＋Ｆ－（与ＸｅＦ具有等电子序的结构）的两个离子准分子发射带。其中心在１８５ｎｍ的强发射带被标记为来自Ｃｓ２＋Ｆ－离子准分子的Ｂ－Ｘ带束缚一自由跃迁．１５２ｎｍ附近的发射带是来自于Ｃｓ２＋Ｆ－的Ｄ—Ｘ带连续辐射。     

Al_2O_3－SiO_2石油裂化催化剂上自由基空间分布的ESR成象

报道了用自己设计制作的电子自旋成象装置，对芳烃芳胺化合物在Ａｌ２Ｏ３－ＳｉＯ２催化剂表面酸中心所形成的正离子自由基进行二维ＥＳＲ成象研究．     

Phase equilibria and thermodynamic properties of Sn-Ag based Pb-free solder alloys

We have recently developed a thermodynamic database for micro-soldering alloys, alloy database for micro-solders (ADAMIS). ADAMIS which consists of the elements Ag, Bi, Cu, In, Pb, Sb, Sn, and Zn has been constructed by the calculation of phase diagrams (CALPHAD) method. The thermodynamic parameters for describing the Gibbs energy of the liquid and solid phases have been evaluated by optimizing the experimental data on phase boundaries and thermo-chemical properties. In this paper, the phase equilibria and the related thermodynamic properties pertaining to the Sn-Ag-X (X=Bi, In, Cu, and Zn) alloys are examined using ADAMIS. Typical examples of the isothermal and vertical section phase diagrams, liquidus surface, etc. for these promising lead-free solders are presented. In addition, ADAMIS is also applied to calculate the nonequilibrium solidification process using the Scheil model.     

Copolymers of 2,5‐bis[(4‐methoxyphenyl) oxycarbonyl]styrene with n‐butyl acrylate: Design,synthesis, and characterization

A series of rod–coil diblock copolymers, consisting of poly{2,5‐bis[(4‐methoxyphenyl)oxycarbonyl]styrene} as a rigid segment and poly(n‐butyl acrylate) as a flexible part, were successfully prepared through two inverse procedures by atom transfer radical polymerization. The copolymers were characterized by ¹H NMR and gel permeation chromatography and had high molecular weights and relatively narrow polydispersities (polydispersity index < 1.20). All the block copolymers synthesized had two distinct glass‐transition temperatures according to differential scanning calorimetry. A polarizing optical microscopy investigation demonstrated the liquid crystallinity of the diblock copolymers. The self‐assembly behaviors in dilute solutions was studied by transmission electron microscopy. © 2005 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 43: 5935–5943, 2005     

化学测量仪器检定/校准有关问题的探讨

介绍了化学测量仪器的分类、特点、检定/校准的必要性及化学计量检定/校准的现状,分析了化学计量标准的特点,探讨了化学计量最高标准的划定和考核的有关问题。     

微透镜阵列用于线列红外探测器的研究

采用离子束刻蚀制备了线列长方形拱面熔凝石英微透镜阵列，用准分子激光扫描消融法淀积了性能均匀而且稳定的ＹＢａ２Ｃｕ３Ｏ７－δ高温超导薄膜，用湿法刻蚀制备了超导薄膜器件，用微透镜阵列与超导薄膜器件耦合构成组合式红外探测器。     

致孔剂对HP（MA—VAc—MMA）载体孔结构的影响

以二乙烯苯和双丙烯酸多缩乙二醇酯为交联剂、聚醋酸乙烯酯（ＰＶＡｃ）或它与醋酸丁酯（ＢＡＣ）的混合物为致孔剂、ＢＰＯ为引发剂，用悬浮聚合随后水解的方法制得了部分水解聚（丙烯酸甲酯－醋酸乙烯酯－甲基丙烯酸甲酯）［ＨＰ（ＭＡ－ＶＡｃ－ＭＭＡ）］多孔载体，研究了ＰＶＡｃ及（ＰＶＡｃ＋ＢＡＣ）用量、分子量及混合比对ＨＰ（ＭＡ－ＶＡｃ－ＭＭＡ）孔结构的影响。结果表明，当ＰＶＡｃ的Ｍ＞２．５×１０５，ＰＶＡｃ／ＢＡＣ为２．３，用量为１０～２０％时，可制得孔隙率较高，孔径分布较窄，孔表面积较大的多孔载体。这种载体适用于微生物固定化。