reaction bond

Study on the Isomerization Reaction Mechanism of Double Bond Transfer of the Silico-butylene

丁硅烯双键转移异构化反应机理的研究

Study on reaction bond si_3n_4 ceramics die

反应烧结氮化硅陶瓷模具材料的研究

The bond exhibited typical glass phase with low melting temperature and high bending strength of strips ( 53.62-93.34MPa). The microstructure analysis indicated the enhancement of the bonding strength resulted from the chemical reaction between the vitrified bond and microcrystal alumina ceramic.

结合剂为典型玻璃相，熔融温度较低，试样抗折强度为53.62-93.34MPa，微观分析表明两者间发生了化学反应，增强了结合剂对磨粒的把持力，提高了磨具的强度。

The FT-IR analysis shows that the two resins occur to cross-linking reaction and hydrogen bond interaction.

通过FT IR分析可知，两种树脂之间发生自交联反应，两者之间存在氢键作用。

The chemical bond energy of a molecule is the one of the its thermochemical properties. The bond strength can measure the stability of the molecule. The bond energies can control the rate of many reactions and determine the chemical reaction mechanism.

分子中的化学键能是分子的热化学性质之一，键的强弱可以用来度量分子的化学稳定性的高低，键能值的高低基本上控制了许多反应速度的快慢，也确定了相应化学反应的机理。

Breaking Reaction of Ether Bond Catalyzed by Acid

醚键催化断裂的反应

It was believed that substantially crosslink reaction substituted hydrogen bond for crosslink bond continually.

交联反应的实质就是不断以交联键取代淀粉分子内的氢键。

Si 3N 4 ceramics die was prepared by the method of reaction bond, and tests of drawing stainless steel ( SUS304) with ceramics die lubricated with water base drawing lubricator have been carried out in YA-100 type drawing machine with four columns.

用反应烧结方法制备氮化硅陶瓷材料模具，然后将其安装在YA-100型四柱液压拉深机上进行拉深不锈钢实验。

C_ ( 60) is one kind of fullerene with high conjugated cage-types structure. Its covalence between two hexagons has high reactivity, which behaves as addition reaction of double bond.

C（60）是高度共轭的笼状结构的碳素体，分子结构中六边形环间的共价碳碳双键是富电子区，反应性能与烯烃有类似性，主要表现为双键加成。

Study of Nucleophilic Substitution Reaction of C-F Bond on a Benzene Ring under Activation of Hydrogen Bond PREPARATION OF CHITOSAN IMMOBILIZED WITH β-CD AT C_6 POSITION BY A NUCLEOPHILIC DISPLACEMENT REACTION

氢键活化的苯环上C-F键的亲核取代反应研究亲核取代法制备壳聚糖6-OH固载环糊精衍生物

Catalytic Action of Palladium Complexes in the Crosscoupling Reaction for Forming C-C Bond

钯配合物在形成碳-碳键偶联反应中的催化作用

The bond-breaking reaction of CH-3-X bond is studies by using Density functional theory ( DFT).

用密度泛函理论（DFT）研究CH3X的键断裂电子转移反应。

It can be deduced that the enrichment of starch microspheres to ascorbic acid depends mostly on association reaction of hydrogen bond between hydroxyls and amidos of starch microspheres and hydroxyls of ascorbic acid after contrasting the oxidation features of ascorbic acid when using various electrodes.

通过比较不同工作电极作用下抗坏血酸的氧化特征，可以推论淀粉微球对抗坏血酸的富集作用更多的依赖于微球结构中的-OH、-NH2与抗坏血酸分子中-OH之间的氢键缔合作用。

It is found that the titled reaction is a concerted but nonsynchronous reaction, the formation of H-H bond is ahead the breaking of C-H bond.

研究结果表明乙炔加氢反应是一协同的非同步反应，H-H键的生成早于C-H键的断裂。

The rearrangement of allylic double bond took placed in the course of these reaction. 6& 12 are able to undergo a lot of electrophilic substitution reaction.

产物是双键经过重排的取代烯丙基二甲基甲氧基硅烷6&10，该产物可进行一系列亲电取代反应。

Modification of the Hyperbranched Unsaturated Poly ( amide-ester) by the Reaction of Double Bond

不饱和超支化聚（酰胺-酯）中双键的接枝改性

Amination of aldehyde is not only a very important reaction in building C-N bond, but also an efficient method to synthesize many biologically active natural products and pharmaceutical compounds.

醛的胺化反应是构建C-N键的重要反应，也是合成许多具有活性的天然产物和药物分子的有效方法。

Palladium catalyzed cross coupling reaction which is widely used to form C C bond is an important reaction in organic synthesis.

钯催化交叉偶联反应是一类用于碳碳键形成的重要反应，在有机合成中应用十分广泛。

Calculating the Reaction Activation Energy with Bond Parameter

用键参数计算反应活化能

At present, the substitution reaction through C-C bond has not been reported yet.

目前，通过C-C键连的取代反应还未见其他报道。

For the studies described in the second chapter, reaction pathways and free energy barriers for the model reaction of the peptide bond synthesis were studied by performing Ab initio calculation.

第二章中我们运用量子化学从头算的方法研究了由肽酰转移酶催化肽键形成的模型反应，并估算了各个反应的自由能垒。

The redox reaction of disulfide bond in organisms lead to the biochemical reactions, and related to many important biological functions.

由于生物体中二硫键的氧化还原作用导致的生物化学反应与许多重要的生物学功能有关。