isomerize

isomerize

1. Cis-shegansu B (5) is a cis isomer of shegansu B. (+)-bisisorhapontigenin A (6) is isolated as a natural product for the first time.

cis-shegansu B(5)为二聚体射干素B的顺式异构体； (+)-Bisisorhapontigenin A(6)为首次以天然产物形式得到的异丹叶大黄素二聚体；

2. CRL was reacted much more quickly with methyl 5-N-(2, 6-xylyl)-alanate than that with R isomer.

CRL脂酶对S-(-)-N-(2，6-二甲苯基)-丙氨酸甲酯作用速度远大于R-(+)-异构体。

3. An isomer of retinoic acid, used in the treatment of acne.

一种视黄酸的异构体，用于治疗粉刺

4. Allene is an isomer of methyl acetylene.

丙二烯是甲基乙炔的一种异构体。

5. Fu rthe-rmore,we introduce an assay method of the S isomer of Cefoperazone in order to control ...

为了控制产品质量，本文还介绍了S型异构体的测定方法。

6. For further studies on the physiological and biochemistry characteristic of c9,t11-CLA,high-purity c9,t11-CLA isomer must be obtained.

为进一步研究c9,t11-共轭亚油酸的生理生化特性,需获得高纯度的c9,t11-共轭亚油酸异构体。

7. The product was determined containing CGA's isomer and isochlorogenic acid by LC-MS test.

从LC-MS检测结果推断,产品中含有绿原酸异构体和异绿原酸。

8. From the Moss- bauer spectrum it can be seen that the isomer shift and quadrupolar splitting values are linear functions of X, which indicates the isomorphous substitution of Mo and Fe.

从穆斯堡尔谱可以看出化学位移和四极裂距是X的线性函数,阐明Mo与Fe类质同象替代。

9. For example,2,6- Dinitrotoluene and2,4- Dinitrotoluene( isomer) are analysis by dielectric spectroscopy methods yielding excellent results.

以2，4-二硝基甲苯和2，6-二硝基甲苯（分异构体）介电波谱分析的示例，得到了很好的结果。

10. For example, 2,6-Dinitrotoluene and 2,4-Dinitrotoluene (isomer) are analysis by dielectric spectroscopy methods yielding excellent results.

以2，4-二硝基甲苯和2，6-二硝基甲苯（同分异构体）为介电波谱分析的示例，得到了很好的结果。

11. Which isomer of carvone do you have? Is it R or S? How do you know? What is the association between the chirality and the odor of the carvone isomers?

你所得到的香芹酮异构体是哪一种呢？是R型还是S型呢？你是怎样知道的？香芹酮异构体的气味和手性之间有什么联系呢？

12. Using aug-cc-pVDZ basis sets supplemented with diffused bond functions, the (H2O)4- isomer of the water tetramer anion in Ci-symmetry was optimized at the MP2 level.

使用aug-cc-pVDZ基组附加键函数的方法，水分子四聚体负离子(H2O)4-的Ci－对称性异构体在MP2方法下被优化得到。

13. There are many helixes of dihedral angle, and the whole skeleton forms a large helix in the structure of the rotatory isomer.

其结构中包含许多二面角螺旋,而且具有旋光性的异构体,其结构的整体骨架也构成一个大的螺旋。

14. Candida rugosa lipase can be used to enrich the isomer of c9,t11-CLA by a two-step selective esterification.

利用假丝酵母脂肪酶两步选择性酯化可以提高c9,t11-共轭亚油酸异构体的含量。

15. L carnitine(the active isomer of carnitine) is essential to transfer long chain fatty acid acrosses the mitochondrial membrane to undergo beta oxidation.

卡尼汀是长链脂肪酸进入线粒体进行氧化所必需的一种物质,其左旋异构体具有生物活性。

16. The state or condition of being an isomer.

同分异构状态以同分异构形式存在的状态或情形

17. It is farther dicussed for remote access to the isomer of database and pointed out problem, at the same time put forward the solvable methods .

同时对系统实现过程中出现的问题进行了较详细的叙述。

18. The most likely alternative structure, the tetrahedron, would produce only one isomer for this composition.

在这种情况下,最可选的结构是四面体,并且对于这个化合物将只产生一个异构体。

19. A mixture of equal parts of an optically active isomer and its enantiomer is termed racemic and has a net rotation of plane-polarized light of zero.

对映异构体，又称对掌异构物、光学异构物或镜像异构物，不能与完全与彼此立体异构体镜像完全重叠。

20. The term "normal" applies to the isomer that has all its carbon atoms linked in a straight chain.

对这类异构体采用“正构”一词是因为这类异构体的全部炭原子都以直链形式连在一起。

21. Although the vinylidene MCCH2 isomer was predicted to be stable species, it was not observed in the experiments.

尽管M(C2H2)的另外一种异构体，亚乙烯基（MCCH2），也是一种稳定构型，但是在实验中我们并没有观察到这种分子。

22. Although Werner worked carefully and examined many systems, there was always the possibility, admittedly small, that the third isomer had escaped his detection.

尽管沃纳工作认真,并且检查了许多体系,第三种异构体没被他发现的可能性,已被公认是很小的。

23. The information was obtained on monomeric isomer distribution of PMR polyimide resin solution and purity of prepared materials.

并对树脂单体材料的纯度以及PMR型树脂溶液中的单体及单体异构体成分进行了分析。

24. The binding of metolachlor and S Isomer to urease in aqueous solution was studied using UV difference spectrum and fluorescence spectrum.

应用紫外差光谱和荧光光谱法研究了水溶液中酰胺类除草剂异丙甲草胺及其S异构体与脲酶分子间的相互作用。

25. A high performance liquid chromatography (HPLC) method for determing the 2,4-/2 ,6- isomer ratio in commercial. toluene diisocyanate (TDI) was developed.

建立了测定工业甲苯二异氰酸酯中2，4-和2，6-体异构比的液相色谱法。

26. The trend of HOMO energy levels of the isomers is coincided with their stabilities, and the isomer having lower HOMO energy level is more stable.

异构体的HOMO能级的高低与其稳定性相对应，HOMO能级低的异构体稳定性好。

27. And the flotation effect of the isomer xanthate is better than that of the normal structure.

异构体黄药捕收能力较正构体要好;

28. One of a group of enzymes that catalyzes the conversion of one isomer into another.

异构酶一种能对一种异构体转化为另一种异构体进行催化物的一组酶

29. The optimum gas chromatographic analysis condition of determining trichlorobenzen isomer content was obtained.

得到了测定三氯苯同分异构体含量的最佳色谱分析条件。

30. A new separation process of p-dichlorobenzene from isomer mixtures(ODB) by using the "solventing-out" method has been examined to obtain p-dichlorobenzene with high purity.

提出了溶析结晶法从邻、对位二氯苯混合物中分离提纯对二氯苯的新工艺。

31. The progress of application of electrochemical sensors on the determination of position isomer and steromer compounds is reviewed in this paper.

摘要综述了电化学传感器在分离和检测异构体化合物方面的研究进展。

32. Abstract: A high performance liquid chromatography (HPLC) method for determing the 2,4-/2 ,6- isomer ratio in commercial. toluene diisocyanate (TDI) was developed.

文摘:建立了测定工业甲苯二异氰酸酯中2，4-和2，6-体异构比的液相色谱法。

33. Some new groups are defined in order to use UNIFAC equation to describe the isomer systems.

新定义了一些大基团，并对原型UNIFAC方程进行了改进。

34. Besides, a determinate method was established to detect nine organochlorine pesticide residues, including BHC and isomer, DDT and isomer and PCNB in seven Chinese traditional medicines by capillary gas chromatography.

本文还研究建立了对七种中药中九种有机氯农药残留的毛细管气相色谱分析方法,对六六六和滴滴涕各四种异构体、五氯硝基苯的残留进行了测定。

35. A structural isomer of citral that is obtained from the oxidation of nerol and is used to make perfumes and flavorings.

橙花醛柠檬醛的同分异构体，橙花醇氧化可得，用于制造香水和香料

36. Werner's method was that used previously by organic chemists to elucidate the structures of substituted benzenes, namely isomer counting.

沃纳所用的方法是从前有机化学家用来阐述取代苯结构的方法,即异构体计算法。

37. Solutions of pure isomer will rotate the plane of polarized light either to the right (dextro: D-) or to the left (levo: L- ).

溶解纯的同分异构体将会使偏振光的翼面既可以转到右面(右旋的D一型)也可以转到左面(左旋的L一型)。

38. The effects of different calixarene substituents on aromatic position isomer retaining were explored.

研究探讨了杯芳烃上不同取代基的固定液结构对芳香族位置异构体保留行为的影响。

39. The self-erasure happens because the new isomer of azobenzene is not as stable as the old one.

纸张能够自动清除字迹是因为新的偶氨苯异构体不如原本形态稳定。

40. The global minima is a linear isomer CCCS~+1 followed by a four-membered ring formed cC_3S~+2 with a CC cross bonding.

结果表明:C3S+有3个稳定的异构体,包括线形、三元环和四元环几何构型.

41. The problem and method of seperation of chloroben and santochlor, which influence the development of benzene dichloride isomer, were summarized.

综述了影响二氯苯发展的邻二氯苯、对二氯苯异构体的分离问题及分离方法。

42. Esomeprazole,a new proton pump inhibitor,is the S isomer of omeprazole.Its pharmacodynamic and pharmacokinetic profile,clinical trials and adverse reactions were reviewed in this paper.

艾司奥美拉唑是一种新型的质子泵抑制剂,它是奥美拉唑的S型光学异构体。本文介绍它的药效学、药代动力学、临床试验和不良反应。

43. Research advance on non ester pyrethroids was reviewed. Its structural feature, biological activity, research present situation, stereo isomer and resistance were described.

论述了非酯型拟除虫菊酯的研究进展,介绍了其结构特点、生物活性、研究现状、立体异构及抗性方面的内容。

44. The M(C2H2) molecule isomerized to the alkynyl hydride HMCCH isomer upon UV-visible irradiation.This isomerization process was predicted to be exothermic but require activation energy.

该M(C2H2)分子在紫外-可见光激发下进一步发生重排反应，生成炔基氢化物HMCCH，该反应是一个吸热反应并需要活化能。

45. For the low productivity and degree of purity of lycopene in China, the article analyze the stabilization, production, purification, separation of isomer and anaysis of lycopene.

该文针对番茄红素生产过程中产品产率低、纯度差的现状，对番茄红素的稳定性、生产方法、纯化方法、异构体的分离以及检测进行阐述。

46. It has chromatographic performance of high column efficiency, good inertia and thermal stability, very high selectivity on analyzing dimethylbenzene isomer.

该柱具有柱效高、惰性好热稳定性好的色谱特性;用于二甲苯异构体的分析具有很好的选择性。

47. The isomer ratio of o-MNT to p-MNT,the degree of dinitration and the ratio of 2,6-DNT to 2,4-DNT have been investigated in the mononitration product of toluene by mixed acid.

通过改变反应条件,研究了硝硫混酸硝化剂对甲苯一段硝化产物的邻对异构体比例、二硝化程度及2,6-二硝基甲苯与2,4-二硝基甲苯生成比例的影响。

48. Solvent extraction as a new method was suggested for separation of hydrocortisone and its optical isomer,epi hydrocortisone,instead of traditional crystallization operation.

采用溶剂萃取法，可克服工业上现有氢化可的松及其光学异构体表氢化可的松结晶分离工艺的缺点。

49. Apart from qualitative and quantitative assays on various carotenoids,it became an important content of recent study to determine the geometrical isomer composition of carotenoids from foods.

除各种类胡萝卜素的定性和定量检测外,对各种类胡萝卜素几何异构体组成的检测成为近期需要发展的重要内容。

50. A structural isomer of citral that is obtained from the oxidation of geraniol.

香叶醛由香叶醇氧化得到的柠檬酸的结构上的同质异构体