The active site of His and VI are both imidazole group, but His also has reactive amido and -COOH with negative charge.
前两种配基中的主要活性位均是咪唑基团，但组氨酸分子中还含有负电性的羧基和具反应活性的胺基。
And sulfonation temperature has a certain effect on the activity of SPC, the higher the temperature, the feebler the activity, thus when petroleum coke is sulfonated in low temperature, its activity will be better than in high temperature; Moreover, alone with the sulfonation temperature ascending, the number of acid-site of SPC gradually increase, but the activity wears off, it also shows that weak acid catalyst is more sutible for hydration reaction of EO; In addition, the effect of reactive temperature on the activity of SPC is greatest, when reactive temperature going up, the activity of SPC is speedily enhanced, but when temperature exceeds a certain range, the activity of SPC will reduce; And the activity of SPC will become stronger alone with reactive pressure rising, but when pressure exceeds a certain value, selectivity of EG will decrease Also, increasing airspeed will weaken the activity of SPC.
其活性大小依次为：25℃磺化的石油焦活性炭≈50℃磺化的石油焦活性炭＞100℃磺化的石油焦活性炭＞150℃磺化的石油焦活性炭＞200℃磺化的石油焦活性炭＞230℃磺化的石油焦活性炭，因此磺化温度对石油焦活性炭的活性有一定的影响，低温磺化比高温磺化的效果好；并且随着磺化温度的上升，石油焦活性炭的酸中心数逐渐增多，而活性却逐渐减弱，说明环氧乙烷水合反应只适于弱酸催化；反应温度对石油焦活性炭的性能影响最大，随着反应温度的升高，催化剂活性是快速增强的，但超过一定温度范围后，活性还有所减弱；石油焦活性炭的活性还随反应压力的增大而加强，压力超过一定值时，乙二醇的选择性会降低；空速的增加也会引起石油焦活性炭的活性减弱。
E. type, origin and property of main reactive site including hydroxyl groups and acid sites, are studied.
因此，如何在提纯工艺中主要应用物理提纯法的处理流程，而尽量避免或减少应用酸处理流程，同时保持提纯的效率与效果，是提纯研究的重要方向。
Second, residues in the reactive site of the inhibitor were replaced by the consensus substrate recognition sequence of furin, namely, Arg at P_1, Lys at P_2, Arg at P_4 and Arg at P_6. In addition, the P_7 residue Asp was substituted with Ala to avoid possible electrostatic interference with furin inhibition. Finally, the extra N and C terminal residues beyond the doubly conjugated disulfide loops were further truncated. However, all resultant synthetic peptides were found to be temporary inhibitors of furin and kexin during a prolonged incubation, with the scissile peptide bond between P1 and P`1 cleaved to different extents by the enzymes.
高活性、低分子量的furin酶抑制剂有可能发展成为新型的抗细菌内毒素和抗病毒感染的药物，我们以绿豆胰蛋白酶抑制剂Lys片段长链22肽为模板，设计了一系列能抑制furin和kexin活性的突变体，采用如下三种方法逐步优化：一、去除Lys片段长链三对二硫键中的一对，用Ser替换Cys，减少可能存在的二硫键错误配对；二、抑制剂的活性中心根据furin底物的专一性逐步改变，即P1、P2、P4和P6位分别变为Arg、Lys、Arg和Arg，同时为了避免P7 Asp和P6 Arg之间可能存在的相互作用，将P7位Asp替换为Ala；三、将两对二硫键形成的双环的外面5个氨基酸残基去除。
The catalyst for IB dimerization, reactive site, reactive mechanism and dynamics research date was reviewed in this paper and try to explain the mechanism of selectivity enhancing by adding Tertiary butyl alcohol during IB dimerization and provide reference for the study of dimerization afterwards.
本文对异丁烯二聚催化剂、反应活性位、机理及动力学研究成果进行了综述，试图解释在异丁烯二聚时，加入的叔丁醇对二聚反应选择性提高的作用机理，为今后二聚反应的研究提供参考。
PC as a good alkylating agent can easily react with those residues belong to the active site of the enzyme in yeast cells because of its reactive chloromethyl group binding to its carbonyl group, which might be the major reason of the enhanced enantioselectivity of enzymatic reaction.
使用结构如α-PC分子中含被羰基活化的卤甲基的化学添加剂预处理酵母后，反应的立体选择性均有所提高，说明起作用的关键官能团可能是α-PC分子中的活泼氯甲基。
Furthermore, we demonstrated that a 14 amino acid peptide of histnone H1 around the reactive site was a potent inhibitor of furin, which will be useful for further drug design, and histone H1 regulated furin activity in vivo.
同时表明组蛋白H1与 furin相互作用并参与了furin体内活性的调节。
It is suggested that mechanisms protecting epidermis of squamata species from UVB damage may involve in (1) Physical defensive mechanism: the death epidermal layer limited UVB transmitting to the viable cells; (2) Biochemical defensive mechanism: up-regulated CAT may protect skin from reactive oxygen species which may induced by UVB. Moreover, the lipid and proteins in the β-, meso- and α-layer may absorb incident UVB and formed damaged products that were limited in the original site; (3) Cellular defensive mechanism: quick initiating of proliferation of the germinal cells and forming of the new epidermis and shedding out the damaged epidermis shortened the damage process and restricted the damage area.
1物理性防御：角质层和中层阻挡绝大部分UVB透过，最大限度地减轻生发层的损伤；(2)生化性防御：通过上调CAT活性以减轻LVB诱导的活性氧对表皮的损伤，同时角质层蛋白质和中层脂类可吸收UVB，且形成的有害产物被局限于原位；(3)细胞性防御：通过迅速启动再生修复过程形成新的表皮，及时蜕去积累了脂类过氧化产物、受损蛋白质和晒斑细胞等的受损表皮，有效防止损伤的持续和蔓延。
In this paper, in-situ EPR, TPSR and NMR were used to study the Rh-Mn/SiO2 catalyst for ethanol synthesis. The results show that the reactive metals Rh and Mn are fixed on the catalyst surface by the interaction with Si-OH, which can enhance the stability of highly dispersed metals. Rh and Mn interact with each other to form the acitve site with high ethanol synthesis activity. The surface Si-OH was found to be of significance on the preparation of catalyst with high catalytic activity.
采用原位EPR，TPSR和NMR等表征手段研究了乙醇合成催化剂Rh-Mn/SiO2的性质，结果表明，活性金属铑及锰经浸渍法担载于载体上后即与表面羟基作用使金属固定在氧化硅的表面上，保证了高度分散活性金属的稳定性；高度分散中的铑锰相互结合，构成了乙醇合成中的高活性位；研究发现表面硅羟基在催化剂制备过程中起着重要作用。
In this work, some basic problems in interface reaction study, i. e. type, origin and property of main reactive site including hydroxyl groups and acid sites, are studied.
本工作中，笔者针对界面研究的最基本问题，即主要表面位（包括羟基和酸位）的类型、来源、结构及彼此关系展开初步研究，并探讨了表面酸性的调控技术。
The active site of His and VI are both imidazole group, but His also has reactive amido and - COOH with negative charge.
前两种配基中的主要活性位均是咪唑基团，但组氨酸分子中还含有负电性的羧基和具反应活性的胺基。
Taking account of different operating conditions, the buses with big average voltage deviation are selected as compensation sites according to the principle of reactive power compensation on site after small disturbance occurs.
该方法根据就地无功补偿原则，兼顾系统不同运行方式，将系统发生无功小扰动之后，平均电压偏离较大的负荷节点作为补偿地点。
Practice and discussion of decreasing power loss for reactive power balance on site in rural grid
农网无功就地平衡降损的实践与探讨
In mitochondria, a primary site of oxygen consumption and the major source of reactive oxygen species (ROS), GSH plays a key role in maintaining the redox environment to avoid or repair oxidative damage leading to dysfunction and cell death.
细胞内，线粒体是耗氧的基本位点和活性氧的主要来源，在线粒体中，谷胱甘肽在维持氧化还原环境，避免氧化损伤导致功能失调和细胞死亡方面起着关键作用。
Considering the reactive compensation effect, an optimal selection of reactive compensation site using sensitivity analysis approach is proposed.
将电压稳定与无功补偿地点的选择相联系，从无功补偿点的补偿效应出发，提出一种基于灵敏度法确定无功补偿地点的方法。
One of the chief purpose of enzyme-mimic researches is to design and synthesize low molecular weight compound which have no peptide bone of the macromolecule, but possess reactive site similar to that of enzyme and can catalyze common chemical reaction with high capability and selectivity.
模拟酶的主要目的之一，是用化学方法来设计合成能高效专一地催化普通化学反应的、非大分子肽骨架的、但含有类似酶反应活性位点的小分子化合物。
Prediction of reactive site in nickel-containing superoxide dismutase in terms of atom-bond electronegativity equalization method
含镍超氧化物歧化酶反应活性的原子-键电负性均衡方法预测研究
The site-compensation of reactive power is used as an effective measure for the reduction of low-voltage network and internal dissipation. This paper discusses the reactive site-compensation technique for electric motors with utilization of the capacity and the safe protection for the capacity.
无功功率就地补偿是为了减少低压电网和用户内损耗的有效措施，本文讨论了利用电容器对电动机的无功就地补偿技术以及对电容器的安全保护问题。
Calculation methods were raised for different reactive power compensation capacity and power factor aiming at different installation of parallel capacitors, control method and different in site and power factor examining site.
针对并联电容器的安装地点不同、控制方式不同以及安装点与功率因数考核点不同，提出各种不同的无功功率补偿容最和功率因数的计算方法。
It was shown by our previous experiments in our laboratory that insulin, one of the intercellular molecules, was a reactive site of the bio-effects induced by Pulsed Electric Field (PEF).
本实验室前期的实验研究发现，胞间信号分子胰岛素是脉冲电场引发细胞生物学效应的一个作用位点。