活性中心

Fe(superscript 3+) occupied both tetrahedral sites in spinel block and trigonal bipyramid sites in mirror plane for LaFeMnAl(subscript 12-x-y)O19 (x=0.5, 1) hexaaluminate.

LaFeMnAl(下标 12-x-y)O19(x=0.5， 1)中Fe以Fe(上标 3+)位于六铝酸盐尖晶石结构中的四面体位和镜面层结构中的三角双锥位，其中后者为N2O分解的主要活性中心。

In this thesis, we designed and synthesised twonew classes of organometallic dendrimers with the catalytically activecenter at the focal point of the dendrimers.

在本论文中，我们设计并合成了两类催化活性中心在树状分子末端的新型树状分子金属催化剂。

The grafting is believed to take place principally through the active centers which are formed on the cellulose substract by the action of ceric ion.

可以认为，接聚反应的发生主要是通过铈离子与纤维素作用在纤维素上生成活性中心。

Methods The yield of combinant human IL-18 expression in E.coli remains quite low because the sequence of mature hIL-18 has 37aa rare condons for E.coli in a total of 157aa.

它们的分子中没有N-糖基化位点，不存在二硫键，很可能巯基就是分子的活性中心。

Analysis of the structural-activity relationship reveals that the a-methylene cyclopentanone moity is responsible for the antitumor activity of the diterpenoids tested.

分析其构效关系表明分子结构中的α-亚甲基环戊酮为该类化合物的细胞毒活性中心。

Complete conversion for cyclopentene and high yield of 79.3% for glutaraldehyde are obtained over the W-HMS prepared with tungstic acid at optimum condition.

在n：n≥30时，催化剂能保持完好的HMS分子筛结构，W原子以嵌入HMS骨架的形式高度分散于载体内表面，构成催化活性中心。

We study the active sites for dehydrogenation of 2-butanol and the reason for producing the by-product.

我们还对仲丁醇脱氢的催化活性中心和副反应产生的原因进行了深入的研究。

The catalytic performance of all the amorphous alloy catalysts mentioned above was measured during liquid phase hydrogenation of furfural to furfuryl alcohol, together with the kinetic studies. The relationship between the catalyst performance and the structure of catalyst, surface electronic state of the amorphous alloy has been systematically studied based on a series of characterization of catalysts . Meanwhile, the promoting effects of the support on the thermal stability and catalytic activity of the amorphous alloy catalysts have been discussed.

本文采用一系列的表征方法(XRD、XPS、TEM、BET、氢吸附、TPD等)进一步研究非晶态合金催化剂的表面结构、表面电子态和催化性能之间的关系，探索电子效应和几何效应对催化剂活性中心结构的影响，探索非晶态合金的晶化失活和载体对非晶态结构的稳定化作用，以及修饰剂对催化性能的改善作用等。

Pharmacological study indicates that mercapto may play an important role in enzyme activity of dynamin-like protein.

药理学性质研究表明巯基可能在酶的活性中心起重要作用。

The surroundings of the central ions were simply forecast in accordance with the electronic spectrum and the scale of nonfreedom. copper-amino acid compound, electronic structure, radial scaling theory,spectrum interpretations

通过我们的系列工作找出一定的规律，则对金属酶的活性中心的结构、电子结构具有清晰的认识。2理论介绍配位场理论是研究过渡金属络合物的一种重要的理论方法，在理论研究

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。