水分子

Two new discreate structure polyoxometalate compounds of [Co_4O_4_4(CH_3COO)_2]_2V_4O_(12)·5H_2O (4) and [Co_3]_2·V_4O_(12)_16.5H_2O-C_8H_6O_4 (5) were synthesized.

品体(4)由两个[Co_4O_4_4(CH_3COO)_2]~(2+)单元和一个分立的分子簇[V_4O_(12)]~(4-)组成，这是首次利用水热合成法合成出来的Co_4O_4化合物。

Surface activity of alkaline lignin was improved by alkylation with dodecyl bromide at 170 ℃,3 h.

碱木质素因其分子上缺乏亲油亲水性均较理想的官能团，而在有机相和水相中的溶解度均不高，表面活性也很差[1] 。

FT-IR spectra shows that the polyaniline is present primarily in the emeraldine salt form, and the polymeric chains interact with inorganic framework, most likely via V=O…HN hydrogen bonding. XRD,TG and DSC indicate that the lamellar structure of the V_2O_5 is preserved, PAn chains eliminate water form the interlamellar region and are partially inserted between the layers, and exist with extended-chain conformation owing to the confined environment.Electrochemical investigation in the range of 1.8~3.8V vs.

红外光谱表明复合物中PAn主要以导电聚苯胺盐的形式存在，PAn链与V_2O_5晶格之间可能形成了V=O…HN氢键。X射线衍射、热重和差示扫描量热证实了PAn/V_2O_5复合物保持了较规整的层间排列结构，PAn取代了V_2O_5干凝胶中的层间水而部分嵌入其片层间，由于受空间的限制，PAn分子链以比较伸展的链构象存在。

To synthesize the octreotide, Phe-Leu-Glu-Glu-Leu and C_(15)H_(31)-CO-Lys-Thr -Thr-Lys-Ser peptides, the strategies are as followings: Fmoc- group as protective group for α-NH_2; TBTU, DIEA and HOBt as coupling reagent; and ethanedithiol -phenol - thioanisole - H_2O - TFA ( 2.5:5:5:5:82.5 , V/V ) as cleaving solution.

采用Fmoc固相合成法，以苯并三哗四甲基脲四氟硼酸盐、二异丙基乙胺和1-羟基苯骈三氮唑为缩合剂；苯酚—乙二硫醇—苯甲硫醚—水—三氟乙酸(5：5：2.5：5：82.5，V/V)为切割试剂，合成了奥曲肽、Phe-Leu-Glu-Glu-Leu及C_(15)H_(31)-CO-Lys-Thr-Thr-Lys-Ser三种小分子多肽，并对奥曲肽的合成规模进行了放大。

Methhods:1:The chemical components of Chinese herbal medicines extracted with petroleum ether,chloroform, ethyl acetate,ethenol and water respectively were analyzed and compared.2.The specimens were analyzed with ultraviolet-visible absorption spectrophotometry.

(1)按中药多分子体系的脂溶性差异，分为石油醚、氯仿、乙酸乙脂、乙醇和水的溶出性成分集合，然后进行&对药&与非&对药&的对比分析；(2)用紫外-可见光光度计测定吸收光谱曲线。

Therefore, dioxotetraamine combined fluorene by methylene is a fluorescentsupermolecule used as fluorescent switch and fluorescent sensor.

因此，二氧四胺与芴的亚甲基相连即构成水溶性的可用作荧光开关的超分子体系。

So it can be concluded that environmental isotope and hydrochemistry can be used as a useful measure for dike leakage study and a guidance for dike reinforcement.

当水处于长期蒸发的条件下，许多环境的轻水分子如162HO容易逸出水体，较

The structural and diffusion properties of water confined in hydrophobic micropores were studied by means of molecular dynamics simulations.

用分子动力学方法模拟了受限在疏水性微孔中的水的结构与动力学行为。

However, this hydrophobic end of a detergent molecule is attracted to substances such as fats.

然而，一个洗涤剂分子的这个疏水末端被吸引对物质例如油脂。

Hypericin belongs to the amphiphile molecule. However, it is very lipophilic and water-insoluble.

金丝桃素属於双性分子，然而本身具亲脂性不溶於水。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。