查询词典 solvate

Properties: colorless needle-like crystals, melting point 105 ~ 106 ℃, optical rotation +51 °(c = 0.978, chloroform), other reports shows that by ethanol recrystallization the melting point 104 ~ 105 ℃, methanol re - the formation of solvate crystal melting point 84 ℃.it is Soluble in acetone, chloroform, insoluble in ether, petroleum ether, insoluble in water.

性质：无色针状结晶，熔点105～106℃，旋光度+51°（ c=0.978，氯仿），还有报道经乙醇重结晶熔点104～105℃，经甲醇重结晶形成的溶剂化物熔点84℃。易溶于丙酮、氯仿，难溶于乙醚、石油醚，不溶于水。

Molecular structures of fourteen 6-thioxanthine tautomers were calculated by the B3LYP/6-311G** method, both in gas and aqueous phases, with full geometry optimization. The Onsager solvate theory model was employed for aqueous solution calculations.

在密度泛函B3LYP/6-311G**水平下，对14种气相和水相中可能存在的6-硫代黄嘌呤异构体进行了几何构型的全自由度优化，并计算出它们的总能量、焓、熵、吉布斯自由能。

Because ureamolecules replace some water molecules that solvate the hydrophobic chain and thepolar headgroups of the surfactant, urea slightly decreases the micropolarity andstrongly increases the microviscosity of the micellar interface.

尿素的加入，大大提高了胶束界面的微观粘度，而稍微降低了胶束溶液的微观极性。

A1l the thick adsorption layer,large space steric hindrance,thick solvate layer and stable ξ-potential of ASP adsorbed on cement particles resist the flocculation of cement particles.In addition the early stage hydration of cement is restrained because the—OH ,—NH2 in ASP can suppress the formation of hydrated products such as C-S-H ,Ca2 and ettringite crystals through forming unstable complex compound with Ca2+.So ASP has excellent plasticity-retention capability of concrete.

由于ASP在水泥颗粒表面的吸附层较厚、空间位阻较大、溶剂化层较厚及ξ-电位较稳定等原因，阻碍了水泥颗粒间的凝聚；同时由于ASP含有的—OH，—NH2等官能团与水化产生的Ca2+形成不稳定的络合物，抑制了水化产物C-S-H，Ca2和钙矾石等结晶体的形成，从而抑制了水泥的早期水化，故ASP具有良好的保塑性能。

The compounds are represented by the structural Formula 1, Chemical formula should be inderted here as it appears on the abstract in paper form. a prodrug thereof, or any pharmaceutically acceptable salt, solvate, isomer or racemic mixture of the compound or said prodrug wherein R1 is heteroaryl, N-arylaminocarbonyl, N-heteroarylaminocarbonyl, benzimidazolyl or benzothiazolyl; R15 is present or not and if present is H, aryl, alkyl, arylalky or heteroarylalkyl; A is aryl, heteroaryl, cycloalkyl, cycloalkylidene, heterocycloalkylidene or heterocycloalkyl wherein said aryl, heteroaryl, cycloalkyl, cycloalkylidene, heterocycloalkylidene and heterocycloalkyl moieties may be substituted or unsubstituted; and B, L, X and R18 are defined herein.

所述化合物用结构式1表示，包括其前药或所述化合物或所述前药的任何药学上可接受的盐、溶剂合物、异构体或外消旋混合物，其中R 1 为杂芳基、N-芳基氨基羰基、N-杂芳基氨基羰基、苯并咪唑基或苯并噻唑基；R 15 存在或不存在，如果存在，则为H、芳基、烷基、芳基烷基或杂芳基烷基；A为芳基、杂芳基、环烷基、环烷叉基、杂环烷叉基或杂环烷基，其中所述芳基、杂芳基、环烷基、环烷叉基、杂环烷叉基和杂环烷基部分可被取代或未被取代；B、L、X和R 18 如说明书所定义。

The solubility of such a solvate may markedly differ from the nonsolvated form; eg, anhydrous ampicillin has a greater rate of dissolution and absorption than its corresponding trihydrate.

例如，无水氨苄西林的溶解速率和吸收比其它相应水合物的溶解吸收速率都要快得多。

So it was last week in Selma , alabama.

上星期在亚拉巴马州塞尔马市发生的事件也是这样一个转折点。

The group also spearheads various social programs in China.

该组织还带头参与中国的各种社会活动。