高效液相色谱溶剂系统四面体优化法

改进了Ｇｌａｊｃｈ的三角形法,建立了适合于高效液相色谱（ＨＰＬＣ）的四面体优化法。将７个溶剂系统的实验结果输入计算机,由计算机模拟２３１个溶剂系统的色谱行为,优选出最佳溶剂系统。将此法用于１２种磺胺药物的分离,得到了满意的结果。     

透射式能见度仪动态范围扩展方法

提出了一种利用光学衰减片与电机组合,扩展透射式能见度仪动态范围的方法。通过改变加载到LED光源的调制信号的幅度,控制LED光源的发射光强;设计测量系统,选择固定透过率的衰减片;设置合理的系统阈值完成数据测量。对测量数据作拟合分析,结果表明:采用透过率为60%的中性密度衰减片,系统动态范围扩展了0.6倍;透过率为12%时,系统动态范围扩展了6.9倍。同时,通过选择不同透过率的中性密度衰减片,可实现系统动态范围的灵活扩展。     

平行光路方向运动的光栅多普勒效应及其在测微小位移中的应用

研究了光栅平行光路运动时产生的光的多普勒效应,用实验进行了验证,并将该原理应用到对微小位移量的检测中. 对原理进行了拓展,得到光栅以任意角度运动产生光的频移的普适公式.     

Synthesis, crystal structure and magnetic property of a new 1D molecular material [1-(4′-chlorobenzyl)-4-aminopyridinium](+) bis(maleonitriledithiolato)nickel(-)

A new ion-pair complex, [1-(4′-chlorobenzyl)-4-aminopyridinium](+)bis(maleonitrile-dithiolato)nickel(−),[ClbzPyNH₂][Ni(mnt)₂] (1), has been prepared and characterized. X-ray single crystal structure conforms that the Ni(mnt)₂⁻ anions and [ClbzPyNH₂]⁺ cations of 1 form completely segregated uniform stacking columns with the Ni?Ni distance 3.944 Å in the Ni(mnt)₂⁻ stacking column. The temperature dependence of the magnetic susceptibility reveals that 1 undergoes a magnetic transition, and exhibits ferromagnetic interaction in the high-temperature phase and spin gap system in the low-temperature phase.     

饱和铁芯型超导限流器对距离保护的影响

饱和铁芯型超导限流器SCFCL(Saturated Core Superconducting Fault Current Limiter)是一种较为理想的高电压限流器,利用其技术特点可以实现无时限的明显限流作用,有着广泛的运用前景。距离保护能够很好的满足高电压复杂网络快速、精确切除故障的要求,其主要元件阻抗继电器是现阶段普遍应用的高性能继保装置。SCFCL在高压输电网络的接入会对距离保护产生很大影响,运用PSCAD搭建500kV输电线路模型,详细分析限流器接入前后不同短路故障类型及故障距离对线路距离保护的影响。     

干电池供电式电子标准电池的设计

标准电池是度量电源电动势的标准仪器．利用RC4191和MC1403精密的低压稳压特性，设计一款电子稳压式的标准电池，既可克服传统汞镉标准电池的缺点，又能保证相同精度的实验性能要求．     

Widely tunable continuous-wave Raman laser in diatomic hydrogen pumped by an external-cavity diode laser

What is to the authors' knowledge the first experimental demonstration of a nonresonant cw Raman laser pumped by a tunable external-cavity diode laser (ECDL) is presented. The ECDL is phase-frequency locked to a high-finesse Raman laser cavity containing diatomic hydrogen (H(2)) by the Pound-Drever-Hall locking technique. The Stokes lasing threshold occurs at a pump power of 400 +/- 30 muW, and a maximum photon conversion efficiency of 12.0 +/- 1.3% is achieved at 1.6 mW of pump power. A 40-nm tuning range of the cw Stokes emission, 1174-1214 nm, is obtained by tuning of the wavelength of the ECDL pump source.     

水杨醛-L-甲硫氨酸希夫碱钴(Ⅱ)配合物的热分解动力学

本文合成了一种新的希夫碱配合物，水杨醛－Ｌ－甲硫氨酸－水合钴（Ⅱ），Ｃｏ（ｓａｌｍｅｔ）．Ｈ２Ｏ并用非等温热重法研究了它的热分解反应动力学。     

Synthesis of poly(arylene disulfide)-vermiculite nanocomposites via in situ ring-opening reaction of cyclic oligomers

An exfoliated poly(4,4^′-oxybis(benzene)disulfide) (POBDS)/vermiculite (VMT) nanocomposite was prepared by using cyclo(4,4^′-oxybis(benzene)disulfide) (COBDS) oligomers and cetyltrimethyl ammonium bromide exchanged VMT. The POBDS/VMT nanocomposites were fabricated in two steps. First, the COBDS oligomers were used to swell and exfoliate organo VMT to afford COBDS-VMT nanocomposite precursor. Subsequently, the exfoliated POBDS-VMT nanocomposite can be made via in situ and instant melt ring-opening polymerization of the COBDS-VMT nanocomposite precursor. High molecular weight POBDS polymer can be formed in a few minutes. The nano scale dispersion of VMT layers within POBDS polymer was confirmed by both the X-ray diffraction patterns and TEM examinations. This methodology provides a potential approach to synthesize high performance polymer nanocomposite.