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Such parameters as ionic liquid catalyst system and H^+ proton donor, that affect the change of the organic phase and the mass of organic matter in residual phase of asphaltic sands, were investigated.

氯铝酸离子液体催化苯与1—己烯的烷基化反应-----[来源：化学世界日期：2003年4期] 研究了在具有Lewis酸性的氯铝酸离子液体体系中进行的苯与1-己烯的烷基化反应。

The catalytic degradation of asphaltic sand swas related to the kinds of chloroaluminate ionic liquids and H^+ proton donor.

结果表明以上各种离子液体均有很高的催化活性，反应转化率在短时间内达到100％。

Assimilatory nitrate reductase is a soluble, multiple center redox enzyme that catalyses the two-electron reduction of nitrate to nitrite using pyridine nucleotide as a electron donor.

植物中的硝酸盐还原酶(nitrate reductase，NR)作为限速酶，催化硝酸盐还原为亚硝酸盐，这一过程在氮代谢中处于关键地位，对植物生长发育、产量形成有重要影响。

Among them,12 ears used epiderm had continous dilatation for 3～6 months,and no constrictive or atretic condition occured;7 ears used intermediate split thickness skin graft had no dilatation after operation,and no scars in donor;4 ears used skin flap had no dilatation after operation,and no constrictive or atretic condition in external auditory canal.

内容提要采用皮片和皮瓣为23耳行外耳道成形术，其中采用表层皮片12耳，术后持续扩张3～6月，未发生狭窄或闭锁；采用中厚皮片7耳，术后不扩张，供皮区无瘢痕增生；采用皮瓣4耳，术后未扩张，外耳道无狭窄或闭锁。

Currently autografting is the most common clinical treatment method, although it has some obvious disadvantages, for example, limited amount and length of nerve for grafting, disfunction of donor site, mismatching, misorientation regeneneration, etc.

目前临床上最常用的治疗是自体神经移植，但是它存在着明显的缺点，如可供移植的神经数量和长度有限，造成供区的功能障碍，大小难以匹配和可造成错向再生等。

But nerve autografting remains many problems, i.e. sacrificing one or more functional nerves and donor-site sequelaes include loss of sensation, scarring.

但它也有许多问题：如供区神经来源有限，需要牺牲有正常功能的神经，以及供区麻木、疤痕等后遗症。

Thinopyrum intermedium,one of the relative species of common wheat,is a kind of dominant wheat germplasm resource for the resistance to stripe rust in wheat genetic improvement. With using Chinese spring phlb as recurrent parents and awnless Zhong 4(a partial chromosome of Thinopyrum intermedium)as donor parents,that is backcross selection,the offspring BC_2F_(7～9)were acquired.Cytology check and genome in situ hybridization, were used for the translocation lines and substitution lines detection.

本研究采用常规杂交并辅抗性鉴定等方法，以中国春phlb突变体为轮回亲本，利用无芒中4，转育中间偃麦草的抗条锈性，并通过细胞学和DNA原位杂交检测，鉴定和筛选普通小麦—中间偃麦草的抗条锈病异代换系或易位系。

It is shown that the first hyperpolarizability β of barbituric acid deviratives strongly depends on the donor structure and the length of conjugate chain, but is not sensitive to the acceptor structure. The HOMO-LUMO calculations reveal that the first hyperpolarizabilities of barbituric acid deviratives are linear to the HOMO-LUMO energy gap △E.

研究结果表明，给体结构与共轭链长度对第一超极化率β影响较大，而受体结构对分子第一超极化率的影响很小，并且分子第一超极化率与分子前线轨道HOMO与LUMO的能级差△E呈较好的线性关系。

When electric fusion method was used for nuclear transfer, the fusion rate (46. 0%), cleavage rate (53. 9%) and blastocyte development rate (10.9%) of adult ear fibroblasts were significantly lower than that of fetal fibroblasts (64. 5%, 70.1%, 21. 6% respectively), fetal skin cells (71. 5%, 70.8%, 22. 1% respectively) and ovary granulosa cells (88. 2%, 79. 1%, 25. 5% respectively). There was no significant difference among other donor cells in the cleavage and blastocyst development rate of resconstituted embryos.

当用电融合法进行核移植时，成体耳部成纤维细胞的融合率（46.0％），卵裂率（53.9％）和囊胚发育率（10.9％）均显著低于胎儿成纤维细胞（64.5％，70.1％和21.6％），胎儿皮肤细胞（71.5％，70.8％和22.1％），以及卵巢颗粒细胞（88.2％，79.1％和25.5％）；另外三种细胞间的卵裂率，囊胚发育率无显著差异，但卵巢颗粒细胞的融合率显著高于胎儿成纤维细胞和胎儿皮肤细胞（88.2％vs 64.4％，71.5％，P＜0.05）。

The doctor is finding a bood donor to donate bood for patient with rare bood type.

医生正在寻找能给一个血型罕见的病人输血的献血者。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。