the monovalent group -OH in such compounds as bases and some acids and alcohols

On the present, the main studies focus on the stability improvement of photochromic dyes, preparation of sol-gel optical fibre and decrease of hydroxyl group content.

提高光致变色染料的稳定性、制备溶胶-凝胶光纤及降低杂化材料羟基含量是目前的研究重点。

The thermodynamic parameters of carboxylic group and titrable phenolic hydroxyl group of humic acid are similar to that of simple hydroxy-benzoic acid.

腐植酸的羧基和可滴定的酚羟基在热力学性质上同简单的羟基苯羧酸相似。

The dehydration of laterite could be divided into steps of removing free water, crystal water and hydroxyl group at different temperature.

在升温过程中，得到了原矿主要矿物中自由水、结晶水和羟基的脱除温度区间。

Selecting chlorination of hydroxyl group in sucrose 6-acylates is a key in the process of making sucralose.

蔗糖- 6 -乙酸酯的选择性氯化是合成三氯蔗糖的关键步骤。

When we acylated the 4「-phenolic hydroxyl group in the molecular structure of puerarin, the derivatives」physico-chemical properties had some changes.

在理化性质测定方面，将葛根素分子结构中的4’-酚羟基进行酰化后其理化性质发生了一定的变化。

The luminescent strength is improved owing to decrease the fluorescence quenching of hydroxyl group when PEG is incorporated.

PEG的加入有助于提高发光强度，是因为降低了羟基的荧光淬灭。

Nile red and Nile blue derivatives with carboxyl or amino or hydroxyl group were synthesized, which were used to tag biological molecules.

设计合成了含有活性基-羧基、氨基、羟基的尼罗红和尼罗兰衍生物，用来标记生物分子。

Any acid that has hydroxyl groups in addition to the hydroxyl group in the acid itself.

任何含有除自身的羟基外其他羟基的酸。

A water soluble acrylic coatings with amide, carboxyl, ester and hydroxyl group on side-chain have been synthesized.

本文合成了侧链上带有酰胺基、羧基、酯基和羟基的水溶性聚丙烯酸树脂。

Selecting chlorination of hydroxyl group in sucrose 6-acetate is a key in the process of making sucralose.

蔗糖- 6 -乙酸酯的选择性氯化是合成三氯蔗糖的关键步骤。

Starting from natural amino acid, diphenol having a phenolic hydroxyl group was synthesized. Using the diphenole as comonomer, a biodegradable epoxy resin in which contain amide group.

用天然氨基酸为起始材料，合成了一种具有双酚羟基官能团的环肽，并以此环肽为联酚合成了主链包含酰胺键的可生物降解环氧树脂。

The present invention relates to a microgel latex with modified hydroxyl group and a property of stable storage.

本发明涉及一种存储稳定的。羟基改性的微凝胶体胶乳。

Glass with low hydroxyl group content prepared by the technology of the invention has the advantages of low costs, simplicity and easy operation, prominent de-watering effects and the like.

本发明工 艺制备的低羟基含量玻璃，具有成本低廉、简单易行、除水效果显着等特点。

The present invention discloses one kind of cosmetics resisting skin ageing, and into the main material of cosmetics, triterpene glycoside containing hydroxyl group or its derivative is added.

本发明公开一种抗皮肤老化化妆品，是在化妆品主料中添加有含羟基的三萜类皂苷或其衍生物。

Straight chain alcohols range from 10 to 33 with the hydroxyl group at every theoretically possible positions.

此外还检出了一整套直链一元仲醇同系物，其碳数从10至33，而羟基可在任何理论上可能的碳位上。

It may be that there is not the hydroxyl group and can not form intermolecular hydrogen bond with MB-Hb system in the cyclohexane.

这也许是因为其不含有而不能与体系形成分子间氢键所导致的。

X-ray photoelectron spectroscopy (XPS) indicated that the higher reaction activity of alkyl halide, the more alkyl substitution degree on hydroxyl group of chitosan.

对烷基化壳聚糖进行X射线光电子能谱分析表明，随着卤代烷试剂反应活性的增高，发生在壳聚糖羟基上的烷基取代反应增多。

There could be a coordination bond between the silver atom and the hydroxyl group of tannic acid, which stabilize the Ag nanoparticles in the spatial reticulate structure of tannic acid.

纳米银颗粒与羟基发生电荷吸附作用，固定在鞣酸的空间网状结构中，稳定存在。

With hydroxyl group terminated PDMS on both side as feedstock, adding several kinds of fillers and adjuvants, the room-temperature vulcanized silicone rubber coatings are prepared.

以二羟基聚二甲基硅氧烷（PDMS）为基体，加入不同填料和助剂，制备了室温硫化硅橡胶涂层。