查询词典 first-order reaction

As some businesses face bankruptcies, the first reaction from local governments is how to save them.

当一些企业濒于破产，地方政府的一个反应就是如何拯救它们。

The resolution of-HMPC in ionic liquids by commercial lipase was studied in the first place and the resolution of-HMPC in vinyl acetate was chosen as control reaction.

首先对商品酶在离子液体中催化拆分的反应条件进行了优化，并以酶在乙酸乙烯酯中的催化作为对照进行了对比。

"It turned out that our first bet, a double or triple carbon-carbon bond, placed next to the transferable carbon unit, helped to alleviate the problems that had plagued the reaction in previous studies," Klimasauskas said.

&结果证明我们先前的推测是正确的，双键或三键被放置在要转移的基团旁边时，会帮助减轻先前研究中提到的问题，&Klimasauskas说。

In our first-generation approach the transketalization protocol 20 required an impractically long reaction time (cf. 1 week); purification also required a time-consuming flash chromatographic separation.

19我国第一代接触transketalization议定书不切实际的要求20反应时间长(参见1周)；净化也需要一个耗时闪光色谱分离。

January 1984 - First patient in clinical evaluation for SNBTS pasteurised factor VIII suffers adverse reaction and the trial is abandoned.

1984年1月-第一名病人在SNBTS的巴氏消毒的第八因子的临床诊断中，遭受了有害反应的痛苦，因此这个实验被放弃。

A child fell into the water, his first reaction to that?

一个小孩掉到了水中，他的第一反应是什么？

The following main results are obtained: The TiO_2 photocatalyst with small crystallite size, high surface area, narrow and uniform pore size distribution, and microporous frameworks could be prepared out by applying MW radiation in the preparation process. The microwave-induced fluorescence technique verified for the first time that microwave enhanced the formation rate of hydroxyl radical, leading to the increase in the photocatalytic efficiency. Compared with the conventional catalyst, TiO_2 prepared by MW dielectric heating owns a higher UV absorption ability, and its optical absorption edge and photovoltaic response are shifted toward the short wavelength region, resulting in increase of photooxidation efficiency. The photocatalytic conversion and the mineralization ratio of acetaldehyde are increased respectively by 30% and 40% over the TiO2 prepared by MW radiation when compared to the TiO2 prepared by the conventional heating. For the MW-assisted photocatalytic reaction over the MW-prepared TiO2, production of hydroxyl radicals is enhanced by 22.5%, and the photocatalytic conversion is accordingly increased by 20%. Similarlly, applying MW also increased the photocatalytic conversion and the mineralization ratio of acetaldehyde over TiO2/Al2O3 sample.

论文得到如下主要结果和结论：(1)微波介电加热TiO_2 溶胶可得到晶粒度小、光催化活性高、比表面积大和孔径分布窄而均一，且微孔发达的TiO_2光催化剂；在溶胶干燥处理过程中微波可使催化剂表面缺陷增加，进而导致光催化反应过程有更多的活性羟基自由基产生；(2)微波制备能显著增强TiO_2 样品的紫外光吸收率，并使其光吸收和光伏响应阈值发生蓝移，从而提高TiO_2的氧化还原能力；(3)与常规加热法所制TiO_2比较，微波法制备的TiO_2对乙醛的光催化降解转化率提高30%，CO_2生成率提高40%以上；(4)与未加微波辐射时相比，发现在光催化反应过程中施加微波，TiO_2 的羟基自由基生成速率提高了22.5%，相应CH_3CHO 光催化降解转化率提高了20%；对Al_2O_3/TiO_2催化剂，CH_3CHO 光催化降解转化率甚至提高了33%，同时CO_2 的生成率也都大幅度提高；(5)微波辐射可改变光催化降解乙醛的产物分布，推断施加微波时乙醛光催化降解按照羟基自由基引发的链式反应机理进行，微波&非热效应&起主要作用。

First, we have to see if he plays against Charlton or not and what the reaction is after the game.

首先，我们要看他能否打上同查尔顿的比赛，以及赛后他的感觉如何。

In the first chapter, two reviews on the synthesis of nitrogen compounds fromcarbohydrates and the synthesis of pyridines by Diels-Alder reaction were introducedrespectively.

第一章简要介绍了以碳水化合物为原料合成含氮杂环化合物的研究进展和以Diels-Alder反应合成吡啶类化合物的研究进展，确定了本论文的研究课题。

A noteworthy one is that we have obtained the Fukui function and local softness of πbond region for the first time, only by which we can explain and predict theregioselecitivity of Diels-Alder reaction etc.

可见原子-键电负性均衡方法中的σπ模型不仅具有简便易行的优点，而且得到的各种反应标度或稳定性指标具有计算简便、概念直观、易于使用等特点。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。