查询词典 reaction

Objective To explore whether the effect of nitric oxide on acrosome reaction is associated with acrosin in human sperm.

目的探讨NO通过精子顶体酶对项体反应(acrosome reaction，AR)的影响。

Target DNA fragments were amplified by polymerase chain reaction from the liver tissue of Columba livia using a pair of specific primers, and the amplified PCR products were cloned into pMD18-T vector.

利用特异引物，通过聚合酶链式反应(polymerase chain reaction， PCR)技术，从家鸽肝脏组织的总DNA中扩增到目的片段，并将扩增产物克隆到pMD18-T载体中，经菌落PCR与酶切鉴定、序列测定及序列分析。

With the reaction time is variable speed integration of the equation fitting response curve Determine the apparent Michaelis constant (apparent MichaelisMenten constant, Kmapp) and the most apparent reaction rate (apparent maximal reaction rate, Vmapp).

用反应时间为自变量的积分速度方程拟合反应曲线确定表观米氏常数(apparent MichaelisMenten constant， Kmapp)和表观最大反应速度(apparent maximal reaction rate， Vmapp)。

For intramolecular electron transfer reactions in solution,the fluctuations of the intramolecular vibrational modes are much faster than that of solvent mode.Thus,the reaction-diffusion equation is commonly used to describe the motion of solvent,with a sink function to treat the vibrational high-frequency mode.Based on this theory-so -called the Sumi-Marcus theory,we proposed an imaginary-time split operator approach to solve the reaction-diffusion equation.The approach is applied to evaluate the intermolecular ET rate between oxazine 1 and N,N-dimethlaniline.By measuring the two average survival times of the donor state probability and the rate constant in long time limit,the full kinetics of the ET is revealed with a variety of sink functions.

对于扩散控制的溶液中的电子转移反应，分子内振动模的运动比溶剂运动快很多，Sumi-Marcus理论提出用反应扩散方程(reaction-diffusion equation)处理溶剂的扩散运动，而分子内的振动用sink函数来表示，我们基于此理论发展了用虚时间分裂算符的方法(imaginary-time Split operator approach)解反应扩散方程，并将其应用于嗪1(oxazine 1，OX1)和N，N-二甲基苯胺分子之间的电子转移反应，Sink函数采用几种不同的微扰表达式，通过计算得到给体几率衰减的两种平均速率和长时间极限下的速率常数，揭示了该体系电子转移过程中的一些动力学性质。

The major goal for our research is to use simple synthesized method for various fluorescence dye derivatives containing Phenothiazine core via Heck reaction and Suzuki coupling reaction that unprotected at 10N-H.

中文摘要本实验的研究目的为利用简单的合成步骤：在Phenothiazine 的3，7-位置上，藉由Heck reaction和Suzuki coupling reaction直接合成出 10NH没有保护基的萤光染料。

Based on the study of DNA isolation from different samples, this paper applied polymerase chain reaction and PCR-derived technology, and utilized many kinds of known samples and reference materials (such as soybean, maize, rice, potato, and pimiento, etc.) to establish the qualitative, half-quantitative, and quantitative GMO detection method: 1. We established a qualitative PCR screening method for CaMV 35S promoter and Tnos terminator. It must be taken into account that false positive results from screening method.

在DNA提取方法研究的基础上，本文应用聚合酶链式反应(polymerasechain reaction，PCR)及其衍生技术，利用大豆、玉米、水稻、马铃薯、甜椒等多种已知标准样品，建立了多种农作物和植物源性食品的GMO定性、半定量和定量检测方法： 1、在单基因定性检测技术方面，针对现有的商品化GMO中大多数含有花椰菜花叶病毒35S（CaMV 35S）启动子和胭脂碱合成酶基因终止子的特点，本文建立了CaMV 35S启动子和Tnos终止子的定性PCR筛选检测方法。

Dipolar cycloaddition reaction is the most useful reaction in fundmental theory of organic chemistry and organic synthesis .

1，3-偶极环加成反应(1，3-dipolar cycloaddition reaction)是在有机化学基础理论及合成方法研究中起重要作用的一个反应。

Objective:Through observing the positive detect rate of hemoculture, Widal reaction,lipopolysaccha-ride passive hemagglutination assay and fluorescent quantitation polymerase chain reaction in those fever patients who have highly suspected infectious with salmonella paratyphi A.We explored the clinical value of early diagnosis of fluorescent quantitation PCR regarding paratyphoid A and evaluated its specificity,sensitivity and repeatability.

目的：通过观察血培养、Widal reaction、脂多糖—被动血凝试验及荧光定量聚合酶链反应在临床高度怀疑为甲型副伤寒沙门菌感染发热患者中的检出阳性率，初步探讨荧光定量PCR早期诊断甲型副伤寒的临床价值，并评价荧光定量PCR特异性、敏感性和可重复性。

Vibrational frequency calculations and intrinsic reaction coordinate methods were used to characterize the reaction path channels on two PESs.

然后，在运用频率分析方法和内禀反应坐标(intrinsic reaction coordinate，IRC)方法验证了各反应路径可靠性的基础上对反应路径做了简单的描述。

The copper-catalyzed 1,3-dipolar cycloaddition of alkynes with azides is a typical example of "click" reaction.1 Since the reaction enjoys the advantages of high efficiency and regioselectivity and requires mild reaction conditions and simple purification procedures, it has become a versatile synthetic tool with applicability in diverse areas including bioconjugation and surface modification.2 The click reaction has also been utilized in polymer science with emphasis on the functionalization of preformed polymers through postpolymerization approaches.3 The effort of developing the reaction into a new polymerization technique, however, has met with only limited success.

登录后回答可以获得经验值奖励，并可以查看和管理所有的回答。登录|铜催化1，3偶极环加成反应的炔烃与叠氮化物是&点击&自reaction.1典型的例子反应享有高效率的优势和区域选择性并要求反应条件温和，简单净化程序，它已成为一个多功能综合工具在包括生物耦合和不同领域的适用性表面modification.2的点击反应亦是利用聚合物科学与功能化的重点通过postpolymerization approaches.3预制聚合物发展到一个新的聚合反应的努力技术，然而，只取得有限的成功。

It is also known as one of the most poisonous naturally occurring substances.

它也被称为一个最自然发生的有毒物质。

The greatest stress is found at the location on the cross section where V is the largest.

最大应力出现在横截面上V为最大的地方。