异构的

The results show high selectivity when the temperature is controlled at 50 CC , and the nitrated reaction time is 90 mm, toluene is nitrated by using 95% nitric acid as nitrating reagent at the presence of acetic anhydride, 1.0g silicotungstic acid catalyst is calcinated at 300℃ for 1.5h. The o/p (ratio of ortho to paro isomer of toluene nitration) ratio is 0.89 in product distribution of toluene nitration, lower than 1.67 using sulfonitric acid as catalyst. The yield of products is 91.6%.

结果表明，在醋酐存在条件下，以CCl4为溶剂，以质量分数为95%的硝酸为硝化剂，反应温度控制在50℃，反应60 min， 1.0g经300℃焙烧1.5h后的硅钨酸催化剂，对甲苯表现出强的区城选择性，甲苯硝化产物o/p值（甲苯硝化产物邻位和对位异构体的质量比）达0.89，较硝硫混酸的1.67显著降低，产物收率达到91.6%。

Comparisons show that there is no correlation between the experimental sensitivity of tetrazole compounds and various previously proposed theoretical static criteria, such as the bond length and bond order of relevant bonds, net atomic charges and electronegativity and the content of 2H-teterazole isomers in both gaseous and condensed states.

把四唑衍生物的实验感度与前人曾提出过的各种感度理论判据—一些静态结构性质(如相关键的键长、键级、原子电荷和电负性等)以及平衡体系中2H-异构体的含量—进行比较，均未找到它们之间的规律性联系。

The results are following:(1)We investigated the influence of the positional isomeric effect on structures.Due to the less space-crowding,it is easier for 3-pytpy to behave as bridging ligand than 2-pytpy under the same reaction conditions,while,it is easier for 2-pytpy to function as tridentate chelating ligand to construct supramolecular structures.

研究结果如下：(1)研究了两个吡啶取代三联吡啶配体的位置异构效应对配合物结构的影响。3-pytpy配体比2-pytpy具有更小的空间位阻，在相同的合成条件下容易以单-三齿桥联方式配位；而2-pytpy更易以三齿螯合形式配位，通过π…π堆积作用形成超分子结构。

The real and specific problems that underly the Grid concept are coordinated resource sharing and problem solving in dynamic, multi-institutional virtual organizations.

网格概念中体现出来的灵活、按需的异构资源集成的思想非常符合人们对更高层次资源共享的需求，因而在分布式超级计算、高吞吐率计算及数据密集型计算等领域得到接受和发展。

Through sharing file between mainframe system and open system, these heterogeneous systems can realize unseaming integration basd on data and mutual operating basd on file system. It has great significance for combining of storage resources and taking a good advantage of the abundant application programs having existed on mainframe system and reducing the cost of data storing.

通过大型机系统与UNIX服务器、Windows服务器等开放系统之间的异构文件共享，各系统能在数据层面上实现无缝集成以及在文件系统的层面上实现交互，对于存储资源的整合、充分利用大型机已有的丰富业务软件以及降低企业的数据存储成本都具有十分重要的意义。

There were five groups in the examination of cellular levelK562 group,K562/A02 group,K562+ADM group,K562/A02+ADM group and K562/A02+TTD+ADM group）.The non-cytotoxicity doses to cell lines K562 and K562/A02 of TTD were got by MTT assay.Using flow cytometry (FCM assay to examine the intracellular ADM concentration.There were three groups in the examination of genic,zymologic and protein levelsK562 group,K562/A02 group and K562/A02+TTD group）.The mRNA expression of MDR was measured by fluorescent quantitative reverse transcriptase polymerase chain reaction(RT-PCR.The expression levels of glutathione-S-transferase and topoisomerase Ⅱ were determined by immunohistochemical technique.

细胞水平检测实验分5组（K562组、K562/A02组、K562+ADM组、K562/A02+ADM组和K562/A02+TTD+ADM组），采用MTT法检测TTD对K562和K562/A02细胞的非细胞毒性剂量，流式细胞术检测细胞内阿霉素的浓度，基因、酶学、蛋白水平检测实验分3组（K562组、K562/A02组和K562/A02+TTD组），采用RT-PCR法检测mdr1 mRNA的表达，免疫细胞化学方法检测谷胱甘肽S转移酶π和拓扑异构酶Ⅱ的表达水平，Western-blotting法检测P-糖蛋白和bcl-2表达。

Database technology is desired to be employed to solve the problem of data management in real-time system and also to provide the algorithm of the time actuates the dispatcher and resource distribution .

OPC技术是基于Windows的OLE、COM和DCOM的技术，它提供了一种标准的接口定义，让异构系统可以互连互通，解决了不同厂商的软硬件的兼容问题。

In order to search value knowledge fast and conveniently from super large-scale data set, the paper provides a system called Knowledge Grid based on WSRF which simplifies and homogenizes the service-to-service interaction and the complexity is shielded effectively. Finally it describes the process of rapidly discovering distributed knowledge in Knowledge Grid.

为了从网格超大规模数据集中快速方便地查找到有价值的知识，提出了一种基于WSRF标准的知识网格环境，使得各种K-Grid服务更加简洁、均质化，屏蔽了资源自身的异构性和复杂性，最后描述了客户端在这种知识网格环境下快速发现分布式知识的过程。

Again, rather than individualizing a group of statements based on a simplistic idea of their similarity to each other, we must individualize the specific 'coexistence of these dispersed and heterogeneous statements; the system that governs their division…the way in which they interlock or exclude one another…the play of their location, arrangement, and replacement.

再次，而不是个体的一组报表基于一个简单的想法相似对方，我们必须个别具体'共存这些分散和异构报表；系统规范其司。。。以何种方式联锁或排除一个。。。的发挥他们的位置，安排，和更换。

On the other hand, Pb~ coordination polymers with 1,4-nda and 2,6-nda exhibit the distinct 3-D 5-connected network and 3-fold interpenetrated diamond framework, revealing the isomeric effect of such tectons.

另外萘二酸的同分异构效应对晶体结构的影响可以在两个由1，4-nda和2，6-nda构筑的pb~化合物中看出(5和6)，它们表现出截然不同的5-连接三维结构和三重互穿金刚石拓扑结构。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。