查询词典 ab-ampere

The structure and stability of all possible isomers of C50X(X=SiH2, PH, S) were investigated by ab initio HF/3-21G calculations. The calculation results indicate that the preferred position for cycloaddition of SiH2, PH, and S on C50 is consistent, i.e. on the C3-C4 and C4-C4 sites of C50, and the resultant most stable cycloaddition isomers are [5,6]-closed and [5,5]-closed structures. The main driving force governing the stability of the C50X(X=SiH2, PH, S) isomers is the strain, or the conjugative effect, or the combination of strain and conjugative effect, depending on the addition positions and the types of the attacked C-C bonds.

用从头算HF/3-21G方法研究了C50的环加成衍生物C50X(X=SiH2， PH， S)所有可能的异构体的结构与稳定性，计算结果表明，SiH2基团、PH基团与S原子在C50上环加成的优先加成位置相同，都为C3-C4类键和C4-C4类键，并且相应形成[5，6]-闭环和[5，5]-闭环结构的最稳定异构体；决定C50X(X=SiH2，PH，S)各异构体稳定性的主要因素，因加成位置以及发生加成反应的C-C键的单双键类型的不同，可能是张力、共轭效应或者二者的共同作用。

By use of AB-8 macroporous resin and with 10％ gardenia yellow as adsorptive solution, selecting proper adsorptive and desorptive conditions, crocin and geniposide can be separated effectively, the purified gardenia yellow whose colority increases from 10 to 320 and OD ratio decreases from 2. 31 to less than 0.4 answers for the standard of gardenia yellow of high quality.

采用AB—8大孔树脂，以10％的栀子黄溶液上柱，选择合适的吸附、解吸条件，栀子黄的色价可从10提高至320，OD值比率也从2.31降至0.4以下，藏花素和栀子甙均达到了有效地分离。

Study on rearrangement of semipinacone and cycloheptane cation with ab initio method;2. Mechanism of rearrangement of semipinacone and cycloheptane cation were studied with HF method and STO-3G~* basis set.

用哈特里-福克方法、STO-3G*基组，分别对半片呐醇和环庚烷正离子的重排机理进行了从头算研究，计算了半片呐醇和环庚烷正离子重排过程中的各个状态的几何构型、零点能，同时对反应路径进行了计算。

Adsorption and desorption characteristic of macroporous resins D-0,D-0,AB-8,XAB-8 and D for diosmin in Galium verum was investigated.

比较了D-0、D-0、AB-8、XAB-8、D 、聚酰胺等种吸附树脂对蓬子菜中活性成分香叶木苷diosmin的吸附和洗脱条件，在静态吸附研究的基础上，进行了动态实验，并且利用二次吸附对该成分进行了纯化。

It is shown that as the interaction parameter increases, the shape of the block copolymer micelle changes from spherical to disklike. Quantitative calculations are performed for the AB and ABC block copolymer micelles.

对由AB和ABC两种嵌段共聚物形成的球状胶束在超强分凝状态下转变为平面圆盘状胶束的条件进行了详细推导。

Section AB Support bearing for central shaft combined with a friction-drive epicyclic speed reduction gear.

第抗体支持轴承中心轴结合的摩擦驱动行星减速齿轮。

Serum gastrin levels and positive rate of serum Hp-Ab were both significantly higher than those in controls.

慢性湿疹的发病可能与Hp感染有关。

New fancy yarn spinning machine can Tatu yarn, Loop yarn, TT yarn, knot yarn, AB yarn, wrapped yarn, TT circle composite yarn; four-color gilling machine can be different components of the crude under mixing ratio to be a gradual change in color spinning color tops; small needle crochet machine filament or yarn can be used as raw material, imitation scallops hollow yarn, cut yarn, yarn hook chain; multifunction fancy spinning yarn spinning machine can core-spun yarn, thick yarn, the strength-twist yarn, slub yarn, etc..

新型花式纺纱机可以纺制大肚纱，圈圈纱， TT 纱，结子纱， AB 纱，包缠纱，圈圈 TT 复合纱等；四色针梳机可将不同成分的粗条根据比例来进行混条，纺制颜色渐进变化的彩色毛条；小针筒钩编机可以用长丝或纱线为原料，仿制空心带子纱，割毛纱，勾链纱等；多功能花式纺纱机可以纺制包芯纱，粗细纱，强弱捻纱，竹节纱等。

Vegetable blood group A Japanese scientist studied a variety of 500 angiosperm and gymnospermous seed and fructification, discovery has O blood group 60 kinds among them, 24 kinds have B blood group, write a few plants additionally to have AB blood group, but did not find namely can deciding is A model plant.

植物血型一位日本科学家研究了500多种被子植物和裸子植物的种子和果实，发现其中60种有O型血型，24种有B型血型，另写一些植物有AB型血型，但就是没有找到能够判定是A型的植物。

As shown,the antigen is a glycoprotein present on the surface of cells. Extracts from Hep G2 hepatocellular carcinoma cells, HT-29 colon cancer cells, SKHep-1 liver adenocarcinoma cells, BT-20 breast cancer cells as well as U937 histiocytic lymphoma cells were positive for the precipitation of Ag-Ab complex, which were later reactive with the anti-3A5 McAb staining. While extracts from normal human endothelial cells showed no precipitation in Western blot.

抗原分子量为63kDa，是一种存在于细胞膜上的糖蛋白，在肝细胞肝癌Hep G2细胞，肠癌HT-29细胞，肝管癌SK-Hep-1细胞，乳腺癌BT-20和人组织细胞淋巴瘤U937细胞膜提取物中，均有此蛋白带，并能被单抗3A5特异性地识别，而人正常内皮细胞则不见此反应带。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。