查询词典 rearrangement

Results Stable Spectral Karytyping method was set up and extraordinary multiplicity of structure, including metathesis、depletion、amplification、rearrangement、equiarm、marker-body and so on were found by this methad.

结果 我们建立了稳定的光谱核型分析方法，发现肿瘤实体瘤染色体异常呈多倍体且结构异常复杂，包括易位、缺失、扩增、重排、双着丝粒、等臂及标记染色体等。

This rearrangement is supposed to not only strengthen the discipline overlapping, but also enhance the systematical and continuous characters of original specialized knowledge.

希望通过此类课程重组，加强不同学科间的交叉与融合，使中药学专业的学生掌握最基本的理化实验技能，并加强学生专业知识的系统性和连贯性，提高学生的实验操作能力和分析问题、解决问题的能力。

This rearrangement is supposed to not only strengthen the discipline overlapping, but also enhance the systematical and continuous characters of original specialized knowledge. In this way, the basic experiment skills can be easily grasped by the students majoring in TCM, and their ability of analyzing and solving problems will be improved in practice.

希望通过此类课程重组，加强不同学科间的交叉与融合，使中药学专业的学生掌握最基本的理化实验技能，并加强学生专业知识的系统性和连贯性，提高学生的实验操作能力和分析问题，解决问题的能力。

Two special structural features of the sulfonium salt were proved to stabilize its corresponding ylide and depress the 2,3-sigma rearrangement. One is that there is a trimethylsilyl in the end of the allylic double band. This silicon atom can stabilize a α-carbon anion and the corresponding ylide. Another is that there is hydroxy group in the beta-position of sulfonium atom. The oxygen of this hydroxy group may stabilize the sulfonium cation.

为了稳定生成的烯丙基硫叶立德，并抑制它的2， 3-sigma 重排反应，在硫叶立德结构上做了两方面的考虑：一是在烯丙基双键的未端引入硅基，利用硅原子对 a -碳负离子的稳定作用来稳定烯丙基硫叶立德；二是在硫原子的 b -位引入羟基，利用羟基氧对硫正离子的作用来稳定硫叶立德。

This result suggests that cytomixis occurred at synizesis stage may produce some kind of stress which results in activation of retrotransposon to insert into a new locus, or/and breakage rearrangement at the site of retrotransposon in genomic DNA, that both can be detected by fingerprinning.

分析认为在兰州百合减数分裂前期Ⅰ的凝线期时，由于染色质的胞间运动造成对基因组DNA的胁迫，导致了逆转座子del的激活，所插入的位点序列即为所检测到的特异片段；或者是由于染色质的胞间运动造成染色体的断裂重排。

Second, using DBU as the base for enolization of propargylic esters of unsaturated acids 18e-k, we developed a tandem Ireland-Claisen rearrangement /isomerization reactions. It has been shown that the reaction sequence affords triene molecules 42a-b and 43a-b in moderated to high yields. Interestingly, with allyl hexa-3,5-dienoates 18i-j as the substrate, the rearranged products underwent further aromatization to give uniquely substituted benzyl acids 44a-b.

其次，以含有活泼质子的烯酸炔丙酯18e-k为底物，在DBU为烯醇化碱、TMSCl为硅试剂的条件下，底物18e-h发生了Ireland-Claisen重排/异构化串联反应，得到完全共轭的三烯类化合物42a-b及43a-b；而以己二烯酸炔丙基酯18i-j为底物时，重排/异构化后的产物进一步发生电环化等反应最终得到芳构化产物——取代苯甲酸类化合物44a-b。

Plot Outline: Yuanqiang Zhou, the director of culture station in Jingcheng Town, Jingdezhen city, Jiangxi Province, uses his Sony Hi8 home digital video and VEts video tape recorder to produce TV Series, which are written to CD-R to circulate among the crowd, but for no commercial use or playing in public media. He raised the fund by himself, and then by adapting, directing and photographing, as well as editing and rearrangement all on his own, he independently did some research on special visual effect, though without any professional training, his Montage thinking is surprisingly mature.

内容：江西省景德镇市竞成镇文化站站长周元强使用SONYHi8家用摄像机和VEts录像机进行"电视剧"制作，刻录成CD-R在群众中流传，从不做商业发售或在公共媒体上播放，他自筹资金，自编自导自摄，在家中完成剪辑与混音，独立研制特殊视觉效果，虽然没有任何专业训练的背景，但蒙太奇思维惊人的成熟。

2-Substituted-3,4-dihydro-1(2H)-isoquinolinones were synthesized from methyl 3-hydroxy-ben- zoates via allyl etherification, Claisen rearrangement, oxidation, reductive amination and aminolysis for the first time.

以3-羟基-4-甲氧基苯甲酸甲酯等为原料，通过烯丙基醚化、Claisen重排、氧化、与伯胺反应、还原、分子内酯的胺解六步反应合成了一系列2-取代-3，4-二氢-1-异喹啉酮类化合物。

This article summarizes the research achievement on the structure of anura mtDNA this year, analyzes the diversity of frogs mtDNA gene rearrangement, we found that there are 8 kinds of different mtDNA arrangement orders altogether, and also preliminarily analyzes the relation of this different gene structure.

本文综述了今年来在无尾目线粒体基因组结构的研究成果，分析了蛙类mtDNA基因重排多样性，结果发现无尾目动物共有8类不同的线粒体基因排列方式，并初步分析了这些不同基因结构的关系。

The tricyclic system 5-6-7 of Stenine skeleton was finished, At the same time, also finished the skeleton of Aspidosperma via reduction free radocal cyclization and Clemmensen reductive rearrangement.

并在此基础上应用三丁基锡氢的还原自由基环化和跨环Clemmensen还原重排为关键反应，完成了Aspidosperma的骨架化合物的构筑。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。