反应的

It was found that the endo-type sulfonium salts were also worked but afforded the corresponding cyclopropanes with opposite absolute configuration compared with that from the exo-type salt.

考察了硫盐结构对反应的影响，当硫盐中碳-硫键位于樟脑骨架 endo 位置和碳-硫键位于 exo 位置时所得环丙烷化反应主产物的绝对构型相反。

Objective: To study the dynamic changes of neointimal peoliferation,and the influence of thrombin on vascular proliferative response.

目的：探讨内皮拉伤后血管内膜增殖反应的动态变化，和凝血酶对损伤血管增殖反应的影响。

The influence of reaction temperature, catalysts and vacuum tightness on condensation polymerization were discussed.

定性讨论了反应温度、催化剂的种类和真空度等对缩聚反应的影响。

Cellulose triacetate is the product of a chemical reaction between cellulose and acetic acid. Vinegar syndrome is the reverse reaction of the breakdown of the acetate.

醋酸纤维素是纤维素和醋酸反应的产物，而醋酸综合症就是醋酸盐衰化中退化反应的结果。

The results show that the optimum catalysts for the Michael addition and the nitroreduction were tetrabutylammoniumfioride and titanium trichloride, and the yields of the addition product and the reduction product were 54% and 78%, respectively.

结果表明，Michael加成反应和硝基还原反应的最佳催化剂分别是氟化四丁基铵和三氯化钛，在二者催化作用下所得加成产物和还原产物的收率分别为54%和78%。

Rational reaction condition is that ratio of the Cu(superscript 2+) schiff base complex of disproportionated rosin amine is 3%, urushiol concentration is 68.8 g/L, the system of reaction reacts 36 h at 30℃ in alcohol dissolvent.

结果表明，氧化聚合反应的理想条件是以乙醇为溶剂，加入3%歧化松香胺席夫碱－铜配合物催化剂，漆酚浓度为0.0688g/ml，在30℃下反应36h后，漆酚聚合物的沉淀得率为51.3%。

The factors A and the rate constants are given at temperature range of 200-1200 K.The results in-dicate that the loss of aβ-hydrogen from 2-hydroxyethyl radical to yield vinyl alcohol and that a 1,3-hydrogen shift to form ethoxy radical have close A factors and rate constants.

用量子化学结果和Eyring过渡态理论计算了200－1200K温度范围内，标题反应的A因子和速度常数，结果表明，2－羟乙基脱去β－H生成乙烯醇与其经［1，3］重排生成乙氧基有相近的A因子和速度常数，且常温下速度较慢，反应难以进行。

The presence of a very small amount of ZrO2 is considered to be unreacted zirconium oxide powders.

复合粉体中有少量ZrO2的存在，分析认为是合成反应过程中未参加反应的ZrO2。

Benzaldehyde 1, 2-propylene acetalization was carried out with benzaldehyde and 1, 2-propylene alcohol in the presence of polyaniline doped with ferric chloride.

在以苯甲醛和1，2-丙二醇为原料合成苯甲醛1，2-丙二醇缩醛的反应中，探讨了PAn-FeCl3催化剂对缩醛反应的催化活性。

The NAT2 slow acetylator genotypes were not associated with the side effects of S ASP, but significantly associated with serum SP concentration-related side effects in the treatment of IBD.

IBD患者服用SASP后，总副反应的发生率与NAT2慢型乙酰化基因型无关，但SP浓度相关性副反应的发生率

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！