单扫描示波极谱测定痕量银

本文首次提出了运用单扫描极谱直接测定银的方法。在含N-烯丙基-N′-对苯磺酸钠硫脲及四乙烯五胺的硼砂缓冲液中,银离子在-0.66V(相对饱和甘汞电极)有一灵敏还原波。运用经典极谱或单扫描极谱,此波均可用于微量银的定量测定。“银波”的单扫描示波极谱波可在5×10~(-7)～3×10~(-5)mol/L范围内检测银。方法已用于废定影液中银含量的分析,结果满意。     

耗散准模腔场与激子相互作用的量子统计性质

研究了耗散准模腔场与激子相互作用的量子统计特性 ,给出了当腔场初始处于真空态而激子处于真空态与粒子数态大于 2的叠加态时的腔场与激子能量交换的表达式。研究结果表明 ,激子和腔场可以呈现亚泊松分布状态 ,激子与腔场之间的关联是经典的 ,不存在Cauchy Schwartz不等式的偏离现象。     

苯并噻唑重氮氨基偶氮苯与汞（Ⅱ）的显色反应及其应用

报道了新试剂苯并噻唑重氮氨基偶氮苯的合成及其与汞（Ⅱ）的显色反应，在ＴｒｉｔｏｎＸ－１００存在下弱碱性介质中，试剂与汞形成２：１的橙红色络合物，最大吸收波长位于５２０ｎｍ处，表观摩尔吸光系数为１．５１×１０＾５Ｌ．ｍｏｌ＾－１．ｃｍ＾－１。汞量在０～１．２ｍｇ／Ｌ范围内遵守比尔定律，直接应用于废水中微量汞的测定，结果满意。     

“J—646”新型光学光敏胶胶合工艺简介

“J—646”光敏胶具有透光率好,收缩率小,粘接强度适中,耐老化,毒性小和成本低廉等特点。本文简要介绍了该胶的胶合工艺。     

基于B/S模式的年度考核管理系统的设计与实现

本文阐述了新疆师范大学年度考核管理系统的功能、设计与实现。     

确定事件视界的新公式

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常系数线性中立型微分方程周期解存在唯一的充要条件

本文利用Fourier级数讨论具有常系数的任意阶中立型泛函微分方程的周期解，除一种特殊情况外，我们得到了用有限代数方程组描述的周期解存在唯一性的充要条件，对这种特例，我们也得到了若干实用结果．     

I_3─半群是幂零的若干充要条件

本文通过半群的代数理论给出了Ｉ＿３—半群是幂零的若干等价条件，并且导出几类是幂零的Ｉ＿３－半群     

超氧物歧化酶对糖尿病模型大鼠血液和晶状体中自由基及其清除剂的影响

本工作发现糖尿病大鼠晶状体和血液中的ＬＰＯ、ＭＤＡ水平高于正常大鼠，而Ｔ－ＳＯＤ、Ｃｕ·Ｚｎ－ＳＯＤ水平降低（Ｐ＜Ｏ．０１）．观察用不同剂量ＳＯＤ及不同时间的治疗方案，结果大剂量比小剂量，长时间比短时间更能改善自由基和清除剂的状况，提示糖尿病患者晶状体中自由基代谢异常，这可能和糖尿病性白内障有关；表明ＳＯＤ可能是防治糖尿病性白内障的良药．     

Sensitive monitoring of humic acid in various aquatic environments with acidic cerium chemiluminescence detection.

In this research, a simple, sensitive chemiluminescence (CL) method for the determination of humic acid (HA) in water samples was first developed based on the redox reaction between humic acid and cerium(IV) in the acidic condition. Different with the former redox CL reaction which occurred in alkaline solution, no enhancers were needed and neither precipitation nor a second contamination would occur in the present CL system. Comparing with other spectrometric methods, we find that the proposed analysis system had better applicability and accuracy. Under the optimal experiment conditions, the CL peak height was linear with the concentration of HA in the range of 0.03 to 10.0 microg mL(-1). The detection limit is 0.01 microg mL(-1) (S/N = 3), and the relative standard deviation was 2.3% for 0.5 microg mL(-1) HA solution with eleven repeated measurements. The present CL method was successfully applied to the determination of HA in tap water, spring water and river water samples with good recovery from 90.0 to 110.0%. A possible CL mechanism was proposed based on the results of UV and fluorescence spectrometry and the CL spectrum of HA. It was speculated that the semi-quinone radicals in the excited state were the emitters.