气相色谱-质谱法定性分析蒽醌系列工作液的组成

采用气相色谱-质谱法（GC-MS）对双氧水生产用乙基蒽醌工作液/氢化液组成进行分析，结合蒽醌工作液制备双氧水的反应原理，形成了乙基蒽醌工作液/氢化液的组成信息表。同样采用GC-MS对戊基蒽醌工作液/氢化液的组成进行分析，结合乙基蒽醌工作液/氢化液的组成信息，推测戊基蒽醌工作液/氢化液中组成的可能结构信息，形成了戊基蒽醌工作液/氢化液组成信息表。该法可以为蒽醌法生产双氧水的企业提供降解物的相关信息，为脱除无效降解物提供参考。     

甘露糖磷酰氨基酸缀合物的ESI-MS研究

一系列全乙酰保护甘露糖-1-磷酰氨基酸酯缀合物的α构型和β构型异构体的ESI-MSn裂解规律研究表明, β构型异构体会出现一系列特征的m/z 433, 391, 371的碎片离子, 且［M-CH2CHCH3+Na］+碎片丰度较大. ［M-糖基+Na］+和［糖基+Na］+碎片相对丰度较小. α构型分子反之. 同时对全乙酰保护的［糖基+Na］+ m/z 353碎片离子进行三级碎裂, 其主要特征是消除CH2CO和AcOH中性分子的碎片离子, 而且其它位羟基构型的差异对质谱中碎裂方式影响不大.     

蒎酮酸合成样品的气相色谱分析

采用气相色谱法跟踪测定了α-蒎烯氧化反应中主产物蒎酮酸的含量；实验结果表明，在SE-30/Chro-mosorb W/AW(0.25-0.175mm)的色谱柱上，蒎酮酸与副产物之间具有较好的分离效果，并且在峰形对称性和出峰时间上，SE-30柱也具有优势；该法操作简便、快速、准确性高、重复性好；对同一试样的5次平行独立测定的相对标准偏差（RSD）为1.8％；该法的标准加入回收率达88％-96％。     

GPC法测定歧化松香松脂酸乙烯酯—苯乙烯共聚物对相对分子质量及其分布

利用凝胶渗透色谱仪测定新型高分子材料（歧化松香树脂酸乙烯酯－苯乙烯）的数均和重均相对分子质量及其分布，测试结果表明由于分子链 香树脂酸乙烯链段的影响，共聚物数均相对分子质量随２个组分的比例变化，分布于６７００－５４７００，重均相对分子质量分布于１６３０－１１５０００，标准差为０．０７８，相对标准偏差为３．３６％。     

THE RANDOM SHIFT SET AND RANDOM SUB-SELF-SIMILAR SET

First of all the authors introduce the concepts of random sub-self-similar set and random shift set and then construct the random sub-self-similar set by a random shift set and a collection of statistical contraction operators.     

THE ANALYTICAL PROPERTIES FOR HOMOGENEOUS RANDOM TRANSITION FUNCTIONS

The concepts of Markov process in random environment and homogeneous random transition functions are introduced. The necessary and sufficient conditions for homogeneous random transition function are given. The main results in this article are the analytical properties, such as continuity, differentiability, random Kolmogorov backward equation and random Kolmogorov forward equation of homogeneous random transition functions.     

随机环境中马氏链转移函数的收敛性

本文研究了随机环境中马氏链转移函数的收敛性．利用Doeblin条件，得到了随机环境中一般状态马氏链转移函数弱收敛及强收敛的一些条件，以及收敛速度的一个估计．     

双条件期望的收敛定理及不等式

引进了B值随机变量及可测集г的双条件期望的概念，研究了双条件期望的主要性质，得到了双条件期望下的几个重要不等式，进而证明了双条件期望的有关收敛定理．     

Investigation on Performance of High Repetition Diode-Pumped Heat-Capacity Nd：YAG Laser

We demonstrate the improvements of both beam quality and thermal depolarization loss of an all-solid-state heat-capacity Nd:YAG laser with repetition rate of 50Hz, for the first time to our best knowledge, compared with the conventional steady-state laser. The beam quality of the heat-capacity laser has been improved three times higher than the conventional steady-state laser within the lasing periods of 60s. The depolarization loss caused by thermo-optical effects which is definitely considerable in steady-state Nd:YAG laser has almost not been observed under heat-capacity operation. Design and operations of the all-solid-state heat-capacity Nd: YAG laser with average output power of 25 W with repetition 50 Hz are also studied with the optical-to-optical efficiency of 33.3%.     

THE DECOMPOSITION OF STATE SPACE FOR MARKOV CHAIN IN RANDOM ENVIRONMENT

This paper is a continuation of [8] and [9]. The author obtains the decomposition of state space X of an Markov chain in random environment by making use of the results in [8] and [9], gives three examples, random walk in random environment, renewal process in random environment and queue process in random environment, and obtains the decompositions of the state spaces of these three special examples.