反应率

The catalytic effects of 16a-e on the asymmetric addition of diethylzinc to benzaldehyde were evaluated, and it was found that they could promote the reaction with up to 63% yield and 27% ee.

研究了化合物16a-e催化二乙基锌对苯甲醛的不对称加成，发现16b-e可以催化该反应的进行，最高产率为63％，ee值27％。

In the precence of the base catalyst KF/Al2O3, the one - pot reaction of 2 -hydroxybenzaldehyde or 2 - hydroxynaphthaldehyde with ethyl α- bromoacetate,α-bromoacetophenone , 1,4 - dichloromethylbenzene , 4,4'- dichloromethylbiphenyl and 1,5 -dichloromethylnaphthalene gave the benzofuran compounds in 38-89% yield.

本文报道用 KF/Al_2O_3作为碱催化剂，由水杨醛或2-羟基-1-萘醛分别和α-溴代乙酸酯、α-溴代苯乙酮、苄基氯、4，4'-二氯甲基联苯和1，5-二氯甲基萘等进行一锅化缩合反应，以38～89％的产率合成了14种芳并呋喃化合物。

Influence of the reaction condition for the yield of benzyl propionate was investigated. The traditional process was improved,and the reaction condition was optimized.

讨论了各种反应条件对合成丙酸苄酯的产率的影响，并对传统合成方法进行了改进。

The whole-cell biocatalyst showed a good catalytic capability for repeated use, and the yield of methyl esters could still maintain 82% after it was used for 4 times.

全细胞生物催化剂在反应4次后甲酯得率仍可保持在82%，显示出良好的重复催化性能。

Using DMA as solvent and NEt〓 as base, the yield of biphenyl was up to 94% after 4h at 132℃.

当溶剂为DMA、碱为三乙胺时，碘苯在132℃反应4小时，联苯产率达94%。

For a bituminous coal used in steam boilers, the oil yield reaches its possible peak value of 13%.

针对锅炉用烟煤的实验结果表明：采用热解气作为反应气氛时焦油产率最大，相对无水无灰基煤达13%。

For a bituminous coal used in steam boilers,the ...

针对锅炉用烟煤的实验结果表明：采用热解气作为反应气氛时焦油产率最大，相对无水无灰基煤达13%。

In the first part of the study, it was demonstrated that there was only 0.1% of PCV2 antigen-containing rate in PBL isolated from PCV2-free pigs and treated simultaneously with mitogen and PCV2. The results of both MTT assay and blastogenesis indicated that PCV2 could reduce the responsiveness of PBL to mitogen stimulation, but the results of survival and apoptotic rates indicated that PCV2 had no effects on the viability of PBL.

首先，在第一阶段实验中针对健康无PCV2带原的猪只进行测试，当同时对其PBL以致裂原刺激与PCV2攻毒处理后，其PBL中仅0.1％的细胞呈现PCV2抗原阳性；藉由MTT与blastogenesis分析，均显示PCV2可以降低PBL对於致裂原刺激的反应，然而PCV2对於PBL的存活率或细胞凋亡率则无显著影响。

Results During the operation, the breath and circulation in group A is more steadily than that in group B (P.05); the incidence of bodymovement and larynx spasm and the dosage of ketamine are lesser than that in group A. Postoperative children recovery is faster and more steadily in group A than those in group B.

结果 A组术中血压、心率和呼吸较接近麻醉前基础值，且术中波动较小，生命体征平稳。B组血压、心率及呼吸率均较术前明显增加，且始终保持在较高水平，随麻醉深浅而有显著波动。A组循环、呼吸功能较B组稳定(P.05)；肢体不良自主运动，喉痉挛等不良反应较B组少(P.05)；A组氯胺酮用量明显少于B组(P.01)；术后A组苏醒较快且平稳，恢复期精神症状少，与B组比较差异有统计学意义(P.05)。

The results showed that new-type solid ferric potassium alum was a good catalyst for the synthesis of ethyl decanoate and the optimum conditions were as follows: molar ratio of acid to alcohol was 1∶2, the use level of catalyst was 0.6 g/0.05 mol capric acid, water-taking reagent benzene was...

结果表明，新型固体酸铁钾矾是合成癸酸乙酯的良好催化剂，在酸醇物质的量比为1∶2，催化剂用量为0.6g(0.05mol癸酸)，带水剂苯为15mL，反应时间为2.5h的条件下，癸酸乙酯的酯化率可达98%。

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！