反应率

In the third part of this paper, a facile method is presented for synthesis of malonaldehyde dianil from propargyl alcohol by oxidizing using chromium trioxide and addition reaction with aniline.

对肼基苯磺酸是由对氨基苯磺酸经亚硝酸钠重氮化得到的重氮盐用亚硫酸氢钠还原、水解、硫酸酸化制得，本文经多次实验确定了反应原料、用量及反应条件，得到的产品纯度好，产率高。

Single-component samarium diiodide catalyst system was first used with polymerization of acrylonitrile. Adding of hexamethylphosphoramide could greatly improve reaction activity of the catalyst system. AN/Sm12 and l{IVIPA1 Sm12 molar ratios, reaction time and temperature were mainly investigated with yields and molecular weights of resultant PAN.

研究发现HMPA的加入可以极大地提高催化活性；考察了单体与催化剂(SmI2)的摩尔比例、第二组分与催化剂(SmI2)的摩尔比例、反应温度、反应时间等因素对相应聚合物的产率和分子量的影响，通过对聚合物的红外和核磁的分析，提出了&单电子转移-双阴离子引发&机理。

Bromoesters can react with diselenide s by metallic tin in THF to give α-selnoesters in moderate togood yields.

本文报道在四氢呋喃中通过金属锡促进α-溴代酯与二硒醚反应生成α-硒代酯，反应条件温和，产率良好

The results show that the presence of durene helps to promote the reaction between pitch molecules and to adjust the distribution of pitch fraction and structure composition.

以均四甲苯为添加剂对沥青进行改性，初步考察了工艺条件（反应温度、反应时间、添加剂含量、体系压力等）对改性沥青软化点、残炭率及族组成的影响。

He best reaction conditions of TMAA were as follows: p-benzenediol as the polymerization inhibitor and the amount 1% of acrylic acid, reaction temperature 180 ℃,reaction time 3 h, raw material mass ratio of methyl eleostearate /acrylic acid 1:0.247 and the yield of TMAA was 85%.

MAA的最佳合成条件为：反应温度180℃，反应时间3 h，桐酸甲酯和丙烯酸的质量比为1：0.247，阻聚剂对苯二酚的加入量为丙烯酸质量的1%，产率为85%。

4Complications:After operation peritonitis appeared in 5cases,among which were 2of intestinal obstruction,and 1 necrosis of left hemicolon.Conclusion:The chemotherapy of selective arterial drug perfusion before an operation reduce the tumor and stiumulate inflammatory reaction and fibroplastic proliferation around it.Thus increases excision rate as well as decreases local recurrence rate and possiblity of cancer merastasis.However,it also leads to some toxic side reaction and possible intestinal obstruction and necrosis.

于直肠癌手术切除前先行选择性动脉药物灌注化疗，可使肿瘤缩小，并刺激瘤周炎性反应和纤维组织增生，从而提高手术切除率，降低术后局部复发和远处转移可能，该方法有一定的毒副反应和发生肠梗阻、肠坏死的潜在危险。

A heatable windshield has a pair of glass sheets laminated together about a member responsive to electrical stimuli, e.g.

一种叠层，例如可加热挡风玻璃，具有一对围绕一个对电刺激产生反应的部件而层压在一起的玻璃板，该反应例如为改变透射率或者当电流穿过所述部件时被加热。

It was found that the more easily systhesized and stable N, N-acetal or N, Ohemiacetal can replace N-tosyl imino ester to react with phenols in the presence of TiCl〓, and α-arylglycine derivatives were also obtained in high yields and high regioselectivity.

进一步研究发现，更易合成的N，N-或N，O-缩醛可以作为亚胺酯的替代物和酚类化合物发生傅克反应。路易酸TiCl〓能有效地促进酚类化合物和亚胺酯的傅克反应较高产率、较高区域选择性的得到2-羟基α-芳香甘氨酸衍生物。

In addition, ioding was found to be an efficient catalyst for the imino Diels-Alder reaction of N-arylimine and enol ethers and the reaction provided tertrahydroqinolines in good yields. One pot synthesis of tetrahydroqinolines from aldehyde, aniline and enol ethers was also achieved using iodine as the catalyst. The chemical yield of the"one pot"reaction was comparable with that obtained using preformed N-arylimine.

此外我们也发现碘能够有效地催化N-芳基亚胺与烯醇醚的Diels-Alder反应，以很高的化学收率得到了四氢喹啉衍生物，并且发现碘也能够直接催化芳香醛、苯胺、烯醇醚的三组分&一锅&反应，获得的化学产率与使用预制的N-芳基亚胺相当。

To our surprise, when the amount of iodide was added to 1:1 ratio with samarium, another different reaction occurred to give the iodination product (2Z)-2-alk-2-enoates in high yields.

同样地，结构类似的三氯乙醇酰胺的酯在二碘化钐的促进下也发生了类似的还原消除反应，以高产率得到N-(2，2-二氯乙烯)酰胺，该方法特色是条件温和，反应迅速。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！