查询词典 reaction

And get the target compounds by sealed tube reaction, diazotization, Sonogashira reaction.

并通过封管反应、重氮化、亲电取代、Sonogashira偶联反应以及保护基的脱去等反应合成了目标化合物。

Use nitrite and the Sulfanilic acid diazotization in acidic conditions,with dinitroaniline coupling formation color reaction,established the method of using the color reaction Determination Chinese cabbage s Nitrite content.

在酸性条件下亚硝酸盐与对氨基苯磺酸重氮化后，再与盐酸萘乙二胺偶合形成颜色反应，建立了用比色法测定大白菜中亚硝酸盐的方法。

One was HF/pyridine diazotization reaction at the 4-position of fluorene ring, and the other was Grignard reaction on the 9-position with Grignard reagent of pentafluorochlorobenzene.

使用HF/吡啶法在芴环的4位引入了氟原子，使用五氟氯苯格氏试剂在芴环的9位引入了全氟苯，合成了五个氟取代三联(9，9-二苯基)芴化合物。

The reaction processes and reaction mechanisms of these materials were determined by a differential thermal analyzer and the thermodynamic considerations.

同时利用DTA及热力学理论测试和分析了放热反应过程及反应合成机制。

It is shown that the value of differential cross section of 〓He from 〓He+〓Be breakup reaction is approximately two-times larger than that from 〓Li+〓C reaction at similar incident energy.

与相近能量的〓Li+〓C的破裂α碎片微分截面相比〓He的破裂α碎片的微分截增大了约一倍。

As a preliminary work we prepared bisorganozinc halides directly from diiodide and zinc powder, and investigated their reaction with acyl chloride to give diketone, the reaction mechanism also proposed on the basis of experiments and the literatures.

第三章：带官能团的双有机卤化锌试剂和酰氯的反应研究本章首次探讨了带官能团的双有机卤化锌试剂的制备及其与芳香族酰氯的反应研究。

The result showed that, the effect of the synergistic reaction of alkyl-phenol-polyoxythylene ether phosphate dispersant TERSPERSE 4896, nonyl phenyl polyoxyethylene ether dispersant TERSPERSE 2210 and XG to suspension was different. Both the rheological curves were same presented as pseudoplastic fluid when they stored in R. T (18~25℃) for 10 days, but the rheological curve of suspension with the synergistic reaction of TERSPERSE 2210 and XG was changed to dilatant fluid when it stored in R.

结果表明，烷基酚聚氧乙烯磷酸酯类分散剂TERSPERSE 4896、壬基酚聚氧乙烯醚类分散剂TERSPERSE 2210与增粘剂黄原胶协同使用所得悬浮体系，室温(18~25℃)贮存10d仍表现出二者共同的流变特性，呈假塑性的流变曲线；但室温贮存150d后，含TERSPERSE 2210与黄原胶的悬浮体系的流变性质发生了明显变化，由假塑性流体向膨胀型流体转变。

The calculated reaction energy barriers of ethene chemical adsorption and dimerization reaction are 108 and 149 kJmol^(-1), respectively.

计算得到的乙烯化学吸附和二聚反应的反应能垒分别为108和149kJmol^(-1)。

When formaldehyde:dimethylamine is 2:1,the temperature of reaction is 55oC and the time of reaction is 2h, the ratio of production is the highest.

单体合成中探讨了羟甲基二甲胺的合成工艺，当甲醛：二甲胺为2：1，反应温度为55oC，反应时间为2h时，羟甲基二甲胺的收率最高；并通过NMR确定了其结构。

Reaction curves of 180 and 60 mmol/L diol 1 concentrations ensured the high reaction rate and enantioselectivity.

分别考察二醇1浓度为60和180mmol/L的反应情况，均具有较高的选择性和反应速度。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新