查询词典 re-reaction

Pathogenetic condition of bleeding,bleeding duration and bleeding amount,reaction of antihemorrhagic,life span and adverse reaction were observed.

对出血发作的病情、持续的时间、输血量的多少、对止血药物的反应、生存期以及副反应进行观察。

In order to develop an useful synthestic process, we have synthesized amides with various substitutents. The isoquinoline skeleton was constructed through Bischler-Napieralski reaction, followed by asymmetric reduction of the imine intermediates with a Ru complex to form the only chiral center. Finally, we connected the two phenyl groups by Heck reaction and effectively obtained optically active aporphine alkaloids.

为了发展一套实用的合成方法，我们首先制备於苯环上具有不同种取代基的苯乙醯胺，接著透过Bischler-Napieralski反应进行分子内合环，并利用钌金属对亚胺中间体进行不对称的还原反应，建立出产物中唯一的光学活性中心，最后再利用Heck反应连结两个苯环，就可以顺利得到具有光学选择性的阿朴吩类天然物。

An optimized PCR reaction system for ISSR analysis was established:PCR was performed in a 20μl reaction mixture with 5μmol/L DNA, 2.5mmol/L Mg~(2+), 0.3mmol/Lof each dNTP, 300nmol/L primer, 1U Taq polymerase and 1×Buffer. Using 9 ISSRprimers,the genetic diversity among 23 Arrhenatherum elatius L.

3遗传多样性研究结果表明：通过模板DNA、引物、Mg~+、dNTPs、Taq酶五种ISSR反应体系的影响因素进行L_(16)(4~5)正交试验，建立了高燕麦草ISSR反应体系：20μl的反应体积中含有模板DNA 5μmol／L，引物300nmol／L，Mg~+2.5mmol／L，dNTP 0.3mmol／L，Taq酶1U及1×Buffer。

These possible mechanisms for the synthetic reaction and thesubstitution reaction of α-hyperiodine group arsonium ylides were proposed.

将它与亲核试剂作用；产生α-硒代或α-硫代胂叶立德，提出了先配位后配体偶联的可能反应机理。

It not only can prepare substituted arylamine sulfoacid with high-quality and high-yield, but also can easily control reaction temp., and reduce reaction temp..

所说的方法不仅能高质量、高产率地制备取代芳胺磺酸，而且由于在有机溶剂中进行反应，可非常容易地控制反应温度，并可降低反应温度。

Enzyme as a biological catalyst is very sensitive to the environment , physical, chemical and biological factors.In the other hand it is difficult to purify from the reaction products. What's more it can not make a continuous operation.All those astrict the reaction.Under this condition, enzyme immobilization was put forward and developed.

酶作为一种生物催化剂，对环境十分敏感，易受物理、化学和生物等因素的影响而失活，而且反应后混入产品，纯化困难，不能实现连续操作，这些难以克服的现象大大限制了酶促反应在工业中的应用，在这种条件下，固定化酶的概念和技术得以提出和发展。

The activated or leached process and their influence elements are studied by 1DREACT software package of coupled mass/heat transfer and chemical reaction dynamics of water-rock interaction, according to the geological and geochemical characters of fine disseminated gold deposits.(1) Water-rock reaction time is not the important influence element of activating gold;(2) At first, activating capability of hydrothermal solution increases with the increasing of total sulfur activity; after lga〓≥-4, the content of activated gold in solution is mainly related to original content of gold in wall rock, and does not visibly dependent on total sulfur activity.(3) It is a complicated nonlinear process of influence of activating gold capacity of hydrothermal solution with the change of temperature, in general, 220 ℃ is most favorable to gold activation.(4) The influence of oxygen fugacity on gold activation has a multiple functions coupling nonlinear effect, in general, Igfo〓=-41 is most favorable to gold activation.(5) Solubility of gold in fluid decreases with the increasing of velocity of flow, the product of velocity and aurous solubility reaches maximum when velocity is 0.2～0.5m〓m〓. yr〓, i. e. this scope of velocity is most favorable to gold activation.

利用1DREACT水-岩相互作用反应-输运耦合动力学软件包，根据微细浸染型金矿床地质地球化学特征，计算机模拟研究了金的活化、浸取过程及其影响因素，发现：(1)金活化过程中水-岩反应时间不是其主要制约因素；(2)热液对金的活化能力开始随总硫活度的增高而增高，当lg a〓≥-4后，热液中活化金的含量将主要与围岩中金的初始丰度有关，而对总硫活度无明显依赖关系；(3)温度对热液浸金能力的影响是一个复杂的非线性过程，总体而言，220℃最有利于金的活化；(4)氧逸度对金活化的影响呈现出一种多因素叠加的非线性效应，总体而言，lgfo〓＝-41最有利于金的活化与浸取；(5)流体中金的浓度随流体流速的加快而降低，流速与金浓度的乘积在流速为0.2～0.5m〓m〓。yr〓时达到极大，即0.2～0.5m〓m〓。yr〓的流速范围最有利于本类矿床的金的活化。

Second-order reaction kinetics was observed for monochloramine autodecomposition. Cl/N ratio had the greatest impact on the autodecomposition, follwed by pH value. Kinetics model was built for this reaction.

NH_2Cl的自降解反应符合二级反应动力学关系，Cl／N比值对NH_2Cl自降解的速度影响最大，其次为溶液pH值，论文建立了NH_2Cl自降解的动力学模型。

The material balance of technology and one hundred thousandtone stages is accomplished, laying a foundation for industrial experiments of bisphenol A ofpolycarbon-stage with HPA method. The characteristics of the process are shown as follows. Thefirst, using reaction distillation technology to make water and toluene to reach azeotropy andremove them promptly, the reaction rate is increased.

绘制了带控制点的流程图，建立了流程优化模拟计算的数学模型并编制了计算机程序，通过输入工艺设计要求，应用该程序很快就可以完成整个流程的模拟计算，应用该程序也可进行整个流程的优化设计计算。

The molar extinction coefficient, maximum absorption wavelength, reaction rate constants of trans-cis photochemical isomerization, thermal back-isomerization and photochemical back-isomerization and equilibrium constant of photochemical back-isomerization reaction of a novel photochromic liquid crystalline dendrimer G1 of the first generation containing nitroazophenyl groups on its periphery and small molecular azophenyl moiety M1 in solution were described.

张其震*1，盛昕1，李爱香1，王艳2摘要：研究了树外围含12个硝基偶氮苯基元新型一代碳硅烷光致变色液晶树枝状大分子G1和基元小分子M1在溶液中的最大吸收波长、摩尔消光系数、反-顺光化学异构化反应速率常数、热回复异构化反应速率常数、光化学回复异构化反应平衡常数及速率常数。

Hanna: That's over now, isn't it?

都结束了，对吗

You must be ill. You look so pale.

你一定是病了，你的脸色苍白。