乙二醇

Ethylene glycol glycosides,useful as humectant in cosmetics,were prepared by phosphoric acid-catalyzed acetalization of glucose with ethylene glycol.

在磷酸催化下，由葡萄糖和乙二醇经缩醛化反应制备了乙二醇葡糖苷，可用作化妆品保湿剂。

Surface-modified lead iodide nanorods were synthesized by one-step room temperature solid-state reaction of lead nitrate with potassium iodide in the presence of a nonionic surfactant, polyethyl- ene glycol.

以硝酸铅和碘化钾为原料，在体系中添加表面活性剂聚乙二醇，采用一步室温固相化学反应制备出聚乙二醇表面修饰的碘化铅纳米棒，利用X射线衍射，红外光谱，透射电子显微镜，扫描电子显微镜，热分析和元素分析等手段对其进行了表征。

The effect of addition of absorbent resin on the preparation of-1-phenyl-1,2-ethanediol from racemate by stereoinversion was investigated, with whole cells of Candida parapsilosis as catalyst.

以近平滑假丝酵母全细胞为催化剂，考察了添加吸附树脂对不对称氧化还原外消旋苯基乙二醇制备-苯基乙二醇的影响。

He built the MEG-1X personal strap-on helicopter rig which used a single-blade rotor with a tip-mounted G8-2 engine and followed this with the MEG-2X which had a two-blade rotor.

他建造了乙二醇- 1X的个人捆绑式直升机钻机的使用了单转子叶片用尖式八国集团- 2发动机，并遵循这一乙二醇- 2倍的有一两转子叶片。

In this paper the emulsion of polyacrylamide was synthesized in the polyglycol solutions, acryl amide and acrylic acid sodium was used as the monomer. In more detail, we investigated the effect of the concentration of the monomers, the ratio of monomer and PEG, the ratio of monomers, temperature, and emulsifier on the stability of the HPAM emulsion and the molecular weight of the HPAM.

为了提高聚丙烯酰胺相对分子质量，以丙烯酰胺与丙烯酸钠为原料，在聚乙二醇水溶液中合成了聚丙烯酰胺水包水乳液，考察了初始单体质量分数、共聚单体与聚乙二醇摩尔比、共聚单体摩尔比、聚合反应温度、乳化剂种类及其浓度对HPAM水包水乳液稳定性及相对分子质量的影响，所得共聚产物相对分子质量可达1.5×10^7。

In the presence of acetic acid and polyethylene glycol, anthracene reacted with ammonium ceric nitrate and sodium bromate to form anthraquinone.

在醋酸、聚乙二醇存在下，蒽与硝酸铈铵和溴酸钠反应生成蒽醌，聚乙二醇作为相转移催化剂可以提高反应的选择性。

Cinnamaldehyde glycol acetal was synthesized using cinnamaldehyde and glycol as raw materials and calcinations of titanium sulphate doped lanthanum oxide as catalyst.

以肉桂醛和乙二醇为原料，搀杂氧化镧的硫酸钛为催化剂，合成了肉桂醛缩乙二醇。

The preparation of grafted derivant of tertiary amine: it is prepared by the reacting of above (1) product and (2) product heated in water bath at 40℃ within 10min.

聚环氧氯丙烷乙二醇哌啶接支衍生物的制备：将上面制备的聚环氧氯丙烷乙二醇与0.25mol环氧丙基哌啶叔胺于40℃水浴条件下进行接支反应。

Catalytic synthesis of ketal by urushiol-formaldehyde neodymium polymer from cyclohexanone and ethanediol was studied.

以环己酮和乙二醇为原料，漆酚缩甲醛钕聚合物为催化剂合成了环己酮乙二醇缩酮。

The pegylated polylactide-poly glycolide nanoparticle, whose surface was co-modified withmaleimide-polyethylene glycol and methoxy-polyethylene glycol, was made by double-emulsion and solvent evaporation method andcovalently conjugated with thiolated lactoferrin via its maleimide functionalgroup.

第一章首先由复乳／溶媒蒸发法制备马来酰亚胺—聚乙二醇(Maleimide-PEG，MAL-PEG)和甲氧基聚乙二醇表面共修饰的聚乳酸-聚羟基乙酸纳米粒，然后通过其表面MAL-PEG与巯基化Lf共价连接而制备Lf-NP_。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。