查询词典 Chain Reaction

It was found that VAC can be smoothly photografted onto LDPE film with"film combination"system, e. g. conversion percent and grafting efficiency are 70％ and 76％, irrespcetively, with UV intensity of 5400μw/cm〓 and irradiation time of 3min. The reaction orders of polymerization rate to monomer concentration and photoinitiator concentration are about 1 and 0.76, irrespectively, showing that chain transfer reaction takes place with much ease in VAC/LDPE system.

发现利用本文所设计的方法可将VAC快速地接枝在LDPE膜表面，如在光强为5400μw/cm〓，光照3min时，转化率和接枝效率可分别达到70％和76％；聚合反应速率对单体的反应级数约为1，而对光引发剂的反应级数为0.76，说明VAC光接枝聚合中链转移反应占相当大的比例。

Since respiratory tract infections, including IB, are critical in the poultry industry, a multiplex reverse transcription-polymerase chain reaction assay that detects avian viral respiratory pathogens in the same reaction was developed for the economic and clinical needs. Four sets of specific oligonucleotide primers for infectious laryngotracheitis virus, IBV, Newcastle disease virus, and avian influenza virus were used in this study.

由於呼吸道疾病对於家禽产业有很大的影响，因此基於经济与应用在临床上区别诊断的考量，本实验室发展多引子反转录聚合酶链锁反应，一共使用四组针对传染性喉头气管炎病毒、传染性支气管炎病毒、新城病病毒、以及家禽流行性感冒病毒的特异性引子来进行测试。

On the other hand, in catalytic oxidation the cyclohexyl hydroperoxide decomposed rather quickly, and then accelerated the reaction.And during the reaction, the concentration of cyclohexyl hydroperoxide kept very low and the chain propagation became the rate limiting step.

而在催化剂存在的情况下，环己基过氧化氢分解非常迅速，环己基过氧化氢浓度在整个反应过程中稳定在一个很低的水平，反应由氧化生成酮的链传递反应过程控制。

A-Methylnaphthalene contains a methyl group, which is a strong donor group, so the reaction of a-methylnaphthalene with C14 AOS acid had a higher conversion of aromatic than did the reaction of benzene with C14 AOS acid. After alkylaryl sulfonic acid is formed, it will continue to react with another AOS acid to rapidly produce dialkylaryl disulfonic acids owing to the electron- donating effect of the long alkyl chain in the alkylaryl sulfonic acid molecule.

a-Methylnaphthalene包含一个甲基集团，这是一个强大的捐赠团体，所以 a-methylnaphthalene反应出了与C14酸更高的转换的反应比苯与C14活性氧酸。alkylaryl磺酸为后形成，它将继续与另一出酸 dialkylaryl disulfonic迅速产生的电子-酸捐赠的长期效果在alkylaryl烃链磺酸分子。

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。

The nautre of ester bond and sedimentary medium condition control the distribution pattern of organic acid ester in strong reductional environment and water-washed oxidized crude oils. The former features higher contents both of 9, 11-Octadecadienoic acid, methyl ester and Hexadecanoic acid, showing the non-reversible hydrolysis reaction of ester bond in condition of basicity; the later features higher contents of Hexadecanoic acid and Octadeanoic acid, and lower contents of nonsaturated and side-chain acid ester, indicating the reversible hydrolysis reaction of ester bond in acid condition.

酯键的化学性质和沉积环境中介质条件，决定了强还原咸水盐湖相和淡水湖沼相经水洗氧化次生变化的原油有机酸酯的分布特征，前者9，11-十八二烯酸甲酯与正十六烷酸为主，反映酯键在碱性条件的不可逆水解过程，后者以正十六烷酸和正十八烷酸为主，烯酸和支链酸很少，反映酯键的酸性条件的可逆性水解，烯酸经氧化向正十八烷酸，正十六烷酸转化。

It is a super natural antioxidant, and can quench monomorphous oxygen, remove free radicals, and eliminate peroxide chain reaction, thus protect cells against the damage of oxidation reaction.

它可以淬灭单形态氧，清除自由基以及有效的过氧化链式反应，从而保护细胞免受氧化反应的伤害。

In the temperature rang from 120 to 150℃, the relations between the apparent reaction rate constant and temperature of the photochlorination in the side chain of m-chloromethyl benzene were: min-1 min-1 min-1 The apparent reaction activation energies are: Ea1=33.54、Ea2=32.45、Ea3=24.26kJ/mol.

在120～150℃温度范围内，间氯甲苯侧链光氯化表观反应速度常数与温度的关系为： min-1 min-1 min-1 表观反应活化能分别为：Ea1=33.54、Ea2=32.45、Ea3=24.26kJ/mol。

Therefore,we try to directly couple the endothermic reaction of long chain alkane dehydrogenation with the exothermic reaction of methane catalytic combustion by using the metallic monolithic catalysts,which highly miniaturizes reactor size and significantly increases heat efficiency.

因此，本文以长链烷烃脱氢和甲烷催化燃烧为模型反应体系，利用金属基整体式催化剂将上述吸热与放热催化反应直接进行热耦合，以期实现工艺过程的高度集成并提高热利用效率。

The progress in alkylation reaction of benzene with long chain alkenes was introduced from the two aspects of catalyst research and reaction technology.

从催化剂研究和反应技术两方面介绍了苯与长链烯烃烷基化反应技术的研究开发进展。

I had a lovely dog named PiPi, he was one of my best friends.

我曾经有过一只小狗，它的名字叫皮皮，它很善良，它是我最忠实的朋友。

Newly ovulated mouse oocytes were cultured in the CZB medium supplemented with different concentrations of pyruvate before treated for activation or assayed for MPF activity.

我们猜测卵母细胞在不含丙酮酸的条件下老化的更快，并且卵丘细胞可能通过消耗不含葡萄糖的CZB中的丙酮酸从而促进卵母细胞老化。