isomerization

isomerization

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. SKI-300 xylene isomerization catalyst is capable of converting the unbalancedC_8 aromatic hydrocarbon mixtures into mixtures with balanced composition andethyl benzene into xylene.

SKI-300型二甲苯异构化催化剂能将非平衡的 C_8芳烃混合物转化为平衡组成,使乙苯转化为二甲苯。

4. EVALUATION OF ~(121)Sb M?SSBAUER ISOMER SHIFTS

~(121)Sb穆斯堡尔同质异能移研究

5. 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

6. butane vapor-phase isomerization

丁烷汽相异构化

7. Keywords boron trifluoride;alkane t isomerization;

三氟化硼;烷烃;异构化反应;

8. Allene is an isomer of methyl acetylene

丙二烯是甲基乙炔的一种异构体。

9. 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。

10. 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。

11. Application of the zeolites with secondary mesopores as the catalysts for fluid catalytic cracking (FCC), aromatization, isomerization and alkylation was reviewed in detail.

二次介孔的应用以工业催化领域为重点，详细介绍了在裂化反应、芳构化反应、异构化反应和烷基化反应中的应用。

12. xylene isomerization catalyst

二甲苯异构催化剂

13. Advance in Research on Xylene Isomerization Catalyst

二甲苯异构化催化剂的研究进展

14. five-membered cycloalkane isomerization

五员环烷烃异构化

15. Latest advances in molecular sieve catalysts for isomerization were reviewed, especially their application in isomerizaiton of light hydrocarbons, aromatics and methamidophos .

介绍了分子筛催化剂在异构化反应的应用研究进展,尤其是在烃类异构化、芳香族化合物异构化以及在甲胺磷异构化等方面的应用现状。

16. Increasing attention has been paid recently to the double-bond positional isomerization of n-butene because of the availability of large C4 resources and the demand of 1-butene.

介绍了正丁烯双键位置异构反应的热力学和动力学特征、不同异构反应催化剂的研究现状、异构反应机理。

17. A survey on advancement of tranforming utilization of light paraffins and olefins in the respects of isomerization,dehydrogenation and alkylation is presented in the paper.

介绍了轻质烷烃和烯烃的异构化、脱氢以及烷基化等转化利用的发展概况。

18. The progress of isomerization technology of conjugated linoleic acid(CLA) was introduced.The methods of alkaline catalysis,metal catalysis and bio-enzymes isomerization were discussed respectively.

介绍共轭亚油酸(CLA)异构化技术的研究进展,评述异构CLA的碱性催化法、金属催化法和生物酶异构法。

19. 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。

20. Keywords Ah initio;Nitryl hydride;Isomerization;

从头算;硝基氢;异构化;

21. 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。

22. 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。

23. 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。

24. To trifluoroacetic acid as a catalyst, in solvent-free under the condition of the THC for three cyclopentadiene isomerization.

以三氟甲磺酸为催化剂，在无溶剂的条件下对四氢三环戊二烯进行异构化反应。

25. Advances in isomerization of n-heptane on molybdenum-based catalysts in recent years were reviewed in this paper.

以正庚烷异构化为模型反应,综述了钼基催化剂近年来研究结果和进展情况,并分析了今后的发展趋向和应用前景。

26. 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？

27. 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。

28. The catalysts are arranged in the order of their acidities as reflected in the amount of the disproportionation and skeletal isomerization products.

依不均衡反应及骨架异构化反应之产物的量，可把触媒按照其酸性程度排列。

29. The Cis-Trans photoisomerization and thermal isomerization of azobenzene group was main reason that caused the dipole orientational relaxation.

偶氮类分子的顺-反结构在光、热的作用下极易发生转变，是引起常温下生色团分子有序取向结构松弛的主要原因。

30. Esterification of fumaric acid with catalysts,isomerization of maleic acid and maleate with catalysts were investigated.

催化剂包括酯化催化剂和异构化催化剂，分别催化富马酸的酯化和马来酸（酯）的异构化。

31. Conjugated linoleic acids are a group of isomers belonging to linoleic acid and a kind of natural ingredient from ruminant products. The main effective substance is c9, t11-CLA isomer.

共轭亚油酸(conjugated linoleic acid,CLA)是一组亚油酸的异构体,是反刍动物食品中的天然成分,其主要作用成分是c9,t11-CLA异构体。

32. Among all the photosensitizers, the triplet energy transfer photosensitizer has higher effects on the isomerization and can he regarded as an ideal photosensitizer.

其中三重态能量传递光敏剂敏化效果好，被认为是一种较为理想的光敏剂。

33. 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。

34. Electron property and isomerization reaction of pyridazine derivatives which were organic functional molecules were researched employing ab initio HF and (DFT)/B3LYP.

利用从头算ab initio HF和密度泛函理论(DFT)/B3LYP方法。

35. 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。

36. Keywords hypophosphorous acid;thiol isomer thione isomers;enantiomer;proton transfer;isomerization reaction;

单硫代次膦酸;硫酮式异构体;硫醇式异构体;对映异构体;质子转移异构化;

37. 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。

38. double-bond positional isomerization

双键位置异构

39. It has shown that less 1, 2-unit content corresponds to lower poltential barrier of internal rotation and hence to lower energy of rotational isomerization.

反映了1,2-链节对分子链内旋转的阻碍作用。进一步的研究表明,低1,2-链节含量对应着较低的分子链内旋转势垒和内旋转异构化能。

40. It was found that isomerization existed between dihydropimaricisopimaric-type resin acids due to the shift of double bonds.

发现在二氢海松酸异海松酸型树脂酸的分子间存在因双键移位而引起的异构现象。

41. 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

42. The main factors innuencing the isomerization are also investigated.

同时也对影响异构化反应的主要因素进行了探讨。

43. Introduced the latest progress of other high quality gasoline production technology such as alkylation,isomerization,etherification.

同时介绍了其它优质汽油生产技术的烷基化、异构化、醚化工艺的最新进展。

44. Mechanism of the isomerization reaction was also discussed.

同时对反应机理作了初步的探讨。

45. 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。

46. Non-hydroforming isomerization process is used to produce high grade gasoline, with stable light ends as its raw material in Baka production plant.

吐哈油田分公司巴喀原稳厂为充分利用油田轻烃资源的优势,采取了以稳定轻烃为原料的非临氢重整工艺生产高标号汽油。

47. Under the Heck conditions the N-CHO bond is cleaved, and isomerization leads to 1H-indoles in moderate to good yields.

啥米条件下氮键依然倬,导致异构吲哚在中度至良好收益.

48. Therefore, by isomerization, D-glucose, D-mannose, and D-fructose can be interconverted. Isomerization can be catalyzed by either a base or an enzyme.

因此通过异构化,D-葡萄糖、D-甘露糖和D-果糖能相互转化,异构化作用可被碱或酶催化。

49. Keywords solid superacid;isomerization;n-pentane;

固体超强酸;异构化;正戊烷;

50. Isomerization occur during bromine reaction, that is mean secondary allylic configuration changes into primary allylic configuration.

在溴化反应过程中存在分子结构重排，即溴代仲位烯丙基构型向溴代伯位烯丙基构型发生转化。

51. 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。

52. Integration of Bibliotheca Database Based on Isomerization Taxonomy

基于异构分类体系的书目数据库合并

53. It is integration the education and scientific research systems of the various resources, Shielding grid resources isomerization unit and dynamic.

它是融合教育、科研系统的各种资源，保护和网络资源的动态异构化网格中间件体系。

54. optical antipode,optical isomer, antimers

对映体

55. 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。

56. Kinetics of disproportionation and isomerization of p-bromophenol

对溴苯酚歧化异构化反应动力学

57. 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。

58. The product of isomerization, not being seperated, is directly saponified to achieved I.

将菊酸乙酯顺反异构后,产物不经分离直接进行皂化制富反式菊酸。

59. 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。

60. 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。

61. 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。

62. Solvation effects of four isomerization reactions have been inverstigated by using the TLSER model, The good correlation of QSPR equations verify the reasonability of the model.

并用该模型对四类异构化反应在不同溶剂下的反应自由能或活化自由能与溶剂的分子结构之间的关系进行了研究，确证了模型的合理性。

63. 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。

64. 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。

65. 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。

66. 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;

67. Keywords isomerization catalyst;n-hexane;palladium;

异构化催化剂;正己烷;钯;

68. STUDY OF COKING DEACTIVATION ON ISOMERIZATION CATALYST Pd/HM

异构化催化剂Pd/HM结炭失活研究

69. Regeneration of Coked Isomerization Catalysts Pd/HM

异构化催化剂Pd/HM结焦失活的再生

70. The main product of isomerization reaction was camphene and its by-products were limonene, carene and tricyclene etc.The factors influencing the isomerization reaction were investigated.

异构化反应的主产物为莰烯，副产物主要是苧烯、蒈烯、三环烯等。

71. 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

72. When N-(4-hydroxycyclohexyl) acetamide with the cis-trans ratio 66:34 as start material, it can make up 66 to 68 percent trans isomer of total cis and trans isomers in the equilibrium solution through epimerization.

当以顺反比66:34的4-乙酰氨基环己醇为原料时,平衡产物中,反式异构体可占总醇分率的66%~68%。

73. 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。

74. 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。

75. To integrate bibliotheca databases with isomerization taxonomy or even different coding rules is a comprehensive project covering multiple factors, of which the selection of a reasonable data arithmetic is the most significant.

摘要将不同馆藏编码尤其是连分类系统都不相同的书库合并在一起，是一个综合性项目，涉及到很多因素。

76. Mossbauer effect of pyrite nodules was tested.The result shows that due to high strata stress thestructure of paste nodules vaties, i. e. its isomer displacement is correspondingly low .

摘要测定煤层中黄铁矿结核的穆斯堡尔效应的结果表明，受到高地应力作用过的黄铁矿结核，它的微观结构发生了变化，表现为同质异能位移相应变小。

77. The tran-cis isomerization of the title compound is investigated under the light irradiation and certain temperature.

摘要研究了标题偶氮苯类化合物作为光响应材料在溶液中的光控异构；

78. 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。

79. 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。

80. The innovative idea and excellent performance of the SKI series catalysts for isomerization of C_8 aromatics are elaborated.

文章介绍了 SKI系列 C_8芳烃异构化催化剂研究工作的进展。