构

The complexes 7 and 8 with mixed ligands 1, 2-bidentate thiolate and monodentateP〓 or PBu〓 ligands were synthesized from "building block"〓 L = P〓 or〓 through "trans-substitution" reaction of S and N atoms from mpt〓.

在14中，Zn为〓四配位的四面体构型，并通过分子内和分子间氢键形成〓维链。15中，Zn为〓五配位的四方锥构型，配位的〓来自2，2'-二硫水杨酸发生的脱硫反应。

Engineering practice shows that it is an objective problem of upward moving of tunnel segments in the construction process, especially in the large-diameter shield tunnel, which is difficult to solve.

盾构隧道施工过程中衬砌管片上浮问题是客观存在的，且一直是较难解决的问题之一，而大直径盾构隧道的上浮问题表现的更为突出。

This paper introduces the background knowledge of heterogeneous data integration, as well as the knowledge of data integration. On the basis of the above, The author develops an ontology-based Heterogeneous data Integration prototype system, expounds the main framework and essiontial technology. Then the paper introduces its work in detail: it explains the very significance of using ontology as an comon semantic description and an global query model ,and illustrates the reason fo adopting LAV method ; then it builds the formal representation of the mapping between ontology and data resources, applies OWL to describe the ontology and the mapping ; defines a query language named by DIQL to query on our integration system , and supply the detailed arithmetic of reolving partial binding of LAV method、locating of data sources and query rewriting,etc. Finally,the paper demostrates and proves the result of research by examples .

本文介绍了目前异构数据集成的研究现状以及数据集成和本体的相关背景知识，并在此基础上设计开发了一个基于本体的异构数据LAV集成原型系统，同时对原型系统的总体框架、关键实现技术分别做了讨论：首先阐述了将本体作为公共语义描述和全局查询模型的意义，给出了采用LAV集成方案的理由，然后规定了本体和数据源间映射的形式化表示方式，采用能结合描述逻辑和框架系统的优点、适合于半结构化环境的OWL表示本体和映射；其次定义了一种针对集成系统的查询语言DIQL，并在此基础上给出解决LAV部分绑定问题、数据源定位以及查询重写的算法；最后在原型系统的基础上，通过实例验证本文所提方法的可行性。

Multiple-paths hydrogen abstraction reactions of fluorine -with CH_3OH have been investigated at the MP2/6-311 ++ g level. The potential energy surfaces for H-abstraction reaction from carbon atom and oxygen atom were given respectively. The results indicate that there is only one minimum energy path for hydrogen abstraction from carbon atom, while multiple paths were found for hydrogen abstraction from oxygen atom. All the stationary structures, frequencies as well as PES sketch of all channels were given, in which the dominant channel is by a five-member ring transition state. The calculated heat of reaction is 170.62 kj/mol for channel 1, 119.41 kJ/ mol for branch channel 6. The results are in good agreement with experimental data.

以MP2/6-311 ++g水平上详细研究了氟原子与甲醇抽氢反应的多通道反应机理，得到了各条通道中涉及的驻点的构型和振动频率及其能量，给出了两张完整的反应势能面，结果表明，氟原子从C原子上抽氢时有一条明显的最低能量通道，而从氧原子上抽氢时要涉及多条分支通道和多个驻点构型，给出了各分支通道势能面示意图，结果表明以形成五元环状过渡态通道为优势通道，计算得到经途径1生成CH_2OH时反应放热170.62kJ/mol，经分支途径6生成CH_3O自由基时反应放热119.4 kJ/mol，此结果与实验值一致。

The study contains the following purposes:(1) exploring the test-structure of Raven's Advanced Progressive Matrics,(2) examining the process of solving APM,(3) investigating possible factors that affect the construct validity of APM,(4) developing New Figure Reasoning Test, using cognitive measurement approach test design model and computer technology,(5) contrasting APM and NFRT from the viewpoints of test designing and empirical analysis, and (6) developing an automatic item-generation and online testing system for NFRT.

本研究的研究目的为：(1)探讨APM的测验结构；(2)依据认知测量取向，探讨APM的解题历程；(3)探讨影响APM之构念效度的可能因素；(4)根据「认知测量测验编制模式」和电脑技术发展「新编图形推理能力测验」，并验证该测验的构念效度；(5)从测验编制和实证分析比较APM与「新编图形推理能力测验」；(6)发展「新编图形推理能力测验」的「自动命题及施测系统」。

The results indicated that the total hydrodesulfurization ratio of sulfur-containing compounds of FCC gasoline was 86.3%, sulfide and tetrahydrothiophene were completely conversed, the hydrodesulfurization ratio of mercaptans was 96.6%, the hydrodesulfurization ratio of thiophene was 78.8%, the hydrodesulfurization ratio of alkyl-substituted thiophene was 85.8%, the hydrodesulfurization ratio of benzothiophene was 81.4% The conversed products of 3-methylthiophene were including little sulfur specie, isomerized sulfur specie (2-methylthiophene) and larger sulfur specie (2, 5-dimethylthiophene, 2,4-dimethylthiophene, 2,3-dimethylthiophene).

结果表明FCC汽油硫化物总脱硫率为86.3%，其中，硫醚和四氢噻吩的转化率都达到100%，硫醇硫转化率96.6%，噻吩硫转化率78.8%，烷基噻吩转化率85.8%，苯并噻吩转化率81.4%。3-甲基噻吩在OTA催化剂上的转化产物中含有小分子，异构硫化物（2-甲基噻吩），以及大分子异构硫化物（如2，5-二甲基噻吩、2，4-二甲基噻吩和2，3-二甲基噻吩）。

This paper includes two parts ,This first part, wich is also the key part.

第一部分是本文的重点，主要探讨了各词类构词、构形的特点。

On the other hand, 3(2)-fluoro-4-methoxyl methyl benzyl alcohol and 3(2)-fluoro-4-methyl benzyl alcohol are mixture and components of pyrethrum esters. Both of them have "mixture fluorine effect " and higher activity, lower drug resistance. As we know, the mixture benzyl alcohol containing fluorine is more easy to be synthesized than the single, so the cost of preparation is lower. We hope to apply it to molecule design of the new agriculture chemical. On the base of molecule design and structure-activity relationship research of pyrethric acid II and mixture of alcohol containing fluorine, we intend to get new pyrethrum ester that have higher activity and lower resistance.

另一方面，混合含氟对甲氧甲基苄醇和混合含氟对甲苄醇都是具有&混合氟效应&的高活性、低抗性的拟除虫菊酯醇组分，由于混合含氟醇的合成要比单一异构体的合成容易，成本较低，本文希望将其应用到新农药的分子设计中，用第二菊酸和一些含氟醇进行分子设计及进一步的构效关系的研究，筛选出一些高活性低抗性的拟除虫菊酯换代新品种。

In this paper, we use the w (the orientation distribution function) to describe the probability density of finding a crystallite with orientation R and find relations between elastic constitutive tensors and the texture coefficients.

在本文中，晶粒取向分布函数w用来描述多晶体中的晶粒取向为R的可能性密度，给出了弹性本构与织构系数之间的关系表达式。

he conformational properties of 6 possible tautomers of 5-fluorouracil or 5-chlorouracil were studied by using HF/3-21G method.

采用HF/3-21G方法，对6种气相和水相中可能存在的5-氟尿嘧啶(和5-氯尿嘧啶)互变异构体进行了构象分析。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。