异构的

Based on the studies of moderate temperature isomerization catalysts carried out by domestic and foreign researchers, the paper systematically discussed the influence of a variety of factors in process of commercial preparation on the performance of catalyst which applied Pd as its metal component and HM as its acid carrier. The paper also explored the deactivated reasons of catalyst and its regenerating measure. Preparation of mordenite and scaled up production of catalyst, stability of catalyst was demonstrated in a 100kt/a commercial plant. The findings provide important basis for preparing Pd isomerization catalyst and industrial application.

本文在国内外学者对中温异构化催化剂及工艺研究的基础上，以钯作为金属组份，氢型丝光沸石作为酸性载体，系统研究了工业制备过程中各种因素对催化剂性能的影响，以及催化剂失活的原因及再生方法，进行了丝光沸石及催化剂的放大生产，并在10万吨/年工业装置上考察了催化剂的稳定性，为制备载Pd异构化催化剂及工业应用提供了重要依据。

First the NHBL model (Nondedicated Heterogeneous Barrier LogGP model) has been introduced, and it is based on LogGP model . But LogGP doesn't be considered nondedication and heterogeneity between nodes, so it can't be used to describe the parallel computing time accurately.

论文首先对非独占、异构、同步的NHBL(Nondedicated Heterogeneous Barrier LogGP model)模型做了详细地介绍，NHBL是基于LogGP模型提出的，LogGP模型没有考虑到节点的异构和非独占性，不能很好的对并行计算的时间开销进行描述。

There are three isomeric pentene(C5H10)that yield 2-methylbutane on catalytic hydrogenation. Write structural formulas for these three isomers and indicate their relative stabilities based on the ΔH values

答：戊烯的三种同分异构体在催化加氢后可生成2-甲基丁烷，写出3个同分异构体的结构式，并依据他们的ΔH值判断出它们的相对稳定性

Kinetics characteristics of α- pinene isomerization catalyzed by activated carbon supported phosphotungstic acid was studied .

研究了活性炭固载磷钨酸催化α－蒎烯的异构化反应的动力学特征，研究表明，以环己烷作溶剂，α－蒎烯在活性炭固载磷钨酸上的异构化服从准一级动力学模型，其反应的表观活化能为100。

Finally, a comprehensive model was proposed to elucidate the main characteristics and essential time constants of the cis/trans photoisomerization processes among the three 1,4-distyrylbenzene isomers.

最后，我们提出一套完整的动力学模型来描述对-二苯乙烯基苯的顺-反异构化的特徵及其异构化的速率。

The obtained potential energy curves disclosed that a four-state cycle existed in the ground and excited states. It was also found that the activation energy for the methyl transfer was higher compared to the phenyl transfer, which was consistent to the experimental results that the photoisomerization of the phenyl substituted derivative was more rapid than the methyl substituted derivatives.

对反应势能面的研究发现，在光异构化反应中化合物M21和M21、M31的基态和激发态虽然都可以构成四能级反应过程，但由于M21异构化过程的活化能较高，使其所构成的四能级反应难以进行，这就从理论上解释了迁移基团为甲基的M21变色性能低于迁移基团为苯基的M31的实验结果。

The feedstock was changed from high purity meta- trimethylbenzene to meta- trimethylbenzene blended with 45%-55% mixed trimethylbenzene obtained from the top of the heavy component removal column; the original 3-column separation scheme was replaced by 2 columns; and modified the isomerization reaction system in compatible with the separation system for capacity enlarge.

金陵石化公司炼油厂针对异构化装置生产均三甲苯经济效益不明显的情况，改变了原料路线，在原以高纯度偏三甲苯为原料的基础上掺炼 4 5 %～ 5 5 %的脱重组分塔塔顶混合三甲苯；优化了均三甲苯分离流程，将原来的三塔流程改为两塔流程；进行了异构化反应系统与分离系统相匹配的扩容改造，收到了良好的效果，均三甲苯生产能力由 4 5 0t/a提高到 12 0 0t/a ，收率由 11%提高到 2 2 。0 %～ 2 4 。0 %，纯度由 97.9%提高到 98.9%。

To realize network interoperability is a pressing problem, but limitations and unfeasibility exist in the interoperability of telecom services between broadband heterogeneous networks while using existing techniques.

文章针对现有网络互通的现实要求，分析了现有技术手段解决电信业务在宽带异构网络间互通的局限性和非可行性，提出了一种在软交换体系下宽带异构网络间的互通模型和实现方法，并给出了采用此方法的两个互通实例，最后阐明了该方案的具体优点和现实可行性。

A and B isomers could interconvert each other by an inversion of the imine nitrogen atom. In this work, we investigated the substituent effects and solvent effects. This study used the most popular one of density functional theory method unrestricted hybrid Becke three-parameter Lee-Yang-Parr (B3LYP) with the 6-31+G basis set to compute the reaction and activation energies of B/A thermal isomerization.

腙分子的异构化过程藉由转动亚胺基上的氮原子，使腙分子由A 型结构转变成B 型结构(Scheme1)，本研究运用密度泛函数理论中最常被使用的B3LYP，搭配6-31+G基底函数，计算腙分子异构化过程的活化能以及反应热，并且考虑取代基与溶剂效应对能量所造成的影响。

Following host injury, the balance between the epimers and isomers is a determining factor in the overall regulation of hematopoiesis, TH/TH(2) balance, and host resistance to infections and tumor growth.

在宿主损伤以后，雄甾烯的异构体和同分异构体之间的平衡是全部生血作用的控制、平衡细胞/体液免疫、宿主抗感染和抗肿瘤增殖的决定因素。

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。