二聚的

Chinensis by the methods of column chromatography (normal and reversed phase silica gel, Sephadex LH-20), preparative TLC and HPLC. On the basis of spectroscopic methods including IR, ESI-MS, 1-D and 2-D NMR, forty eight of them were identified as seventeen flavonoids, seventeen tritepenoids, one cumarin, five steroids and some benzene derivative etc.

中药射干为射干植物的干燥根茎，从中共分离出53个化合物，通过红外、质谱及核磁共振等波谱方法鉴定了包括12个新化合物在内的48个，结构类型分别属于iridal型三萜及其新颖的二聚体、异黄酮、黄酮及黄酮醇、香豆素、甾体、芳香酸和脂肪酸及其甘油酯等。

Results Bulbus alkaloids easily formed molecular ions(superscript + in MS and dimerized easily in alcohol solution, which did not dimerize in acidity solution. Collision induced dissociation made these alkaloids easily lose a molecule of H2O. The MS spectra of the extracts of five Bulbu Fritillartae species indicated that the major molecular ions were similar to each other, but different varieties showed very different relative abundances of these molecular ions.

结果 在正离子一级质谱中，贝母生物碱易形成带一个正电荷的准分子离子，并且在中性醇溶液中，贝母生物碱易形成二聚体，在酸性介质中则无此现象；二级碰撞诱导解离易使贝母生物碱脱去一分子水；5种贝母对照药材的总生物碱提取液的一级电喷雾质谱图显示，主要分子离子峰基本相同，但因品种不同相对丰度差异较大。

The dimerized HDC was separated and formed spherical vesicles in 20% ethanol/water mixed solvents.

分离出来的二聚HDC在20%的乙醇/水混合溶剂中能形成球形的囊泡。

In compound 1, two independent other than dimerized copper-phenanthroline graups are fused to the oxggen atoms in the vacant site of the mono-lacunary polyanton in parallel.

该化合物分子中2个独立的非二聚体的铜－邻菲啰啉平行地与缺位多酸空穴外的氧配位键合，通过元素分析、红外光谱、热重分析和X射线单晶衍射对其结构进行了表征。

Compound 20 has a two-dimensional hybrid structure on the basis of A-type Anderson polyoxometalates and trinuclear silver coordination complex subunits and sodium dimmers.

化合物20是将A型Anderson多酸与三核的银配合物簇及钠的二聚体形成的2D杂化结构。

This is in sharp contrast, of course, to the behavior of DNA–DNA duplexes, whose stability decreases dramatically at low ionic strength because of the required counterion shielding of the phosphate backbone.

当然，此现象截然不同与DNA-DNA二聚体的特性。由于后者的稳定性需要磷酸骨架的屏蔽，在低离子强度时，其稳定性将急剧下降。

Half the women received a combination therapy of trabectedin and a chemotherapy drug called pegylated liposomal doxorubicin.

一半的女性接受trabectedin和称为脂质体阿霉素聚乙二醇的化疗药物组成的混合疗法。

The preferred cytokine release inhibiting compounds are dimeric gallotannins having a linker molecule that misaligns the carbohydrate cores of the compounds.

优选的细胞因子释放抑制化合物是具有连接分子的二聚单宁，所述连接分子误调该化合物的糖核。

According to structure analysis, the contents of α-helix and dimer structure in refolded eMDH were increased by the cooperation, and eMDH activity was enhanced.

对复性产物结构的初步分析发现，耦合作用可使eMDH分子的α-螺旋及二聚体含量明显增多，因此复性产物的活性也显著提高。

The more dangerous of patients were, the more abnormal of haemostatic disturbances were.

依那普利及特拉唑嗪在满意降压的同时可通过降低血浆TF、FⅦ：C促凝活性及D-二聚体的含量改善血栓前状态，但不影响血浆TFPI的活性。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。