查询词典 solvent

The reaction process in methanol solvent can be deduced from the computational results with CPCM solvent model and the supermolecular handling, namely the reaction involves four steps in the methanol solvent. The nucleophilic addition of trimethylamine to acraldehyde generates an enolate. Nucleophilic attack of the enolate on the aldehyde forms the carbon-carbon bond, followed by the proton-transfer process and the further elimination generating the product and liberating the trimethylamine catalyst.

对于CH3OH对反应体系的影响，可以综合考虑CPCM溶剂模型及超分子模型下的研究结果，即CH3OH溶剂中反应按四步进行，催化剂三甲胺首先与丙烯醛发生亲核加成，生成的两性离子中间体与甲醛发生类似于Aldol的醛醇缩合，形成碳-碳键，之后发生分子内质子转移，最后经E1cb消除得到产物，并释放催化剂三甲胺。

The present business card printing and membership card making business in the widely-used or traditional solvent-based inks, solvent-based inks from paints, solvents, binders, fillers and adjuvant, solvent used mainly aromatic hydrocarbons, esters, ethers, flavoniod etc, these toxic solvent, it finds that, in the packaging of food, medicines, and cosmetics, and so on; and a volatile, with a stronger hen'egg cretonne, will pollute the environment and the health of workers; solventing and imflammable, there is the production of a security risk.

目前制卡和会员卡制作行业中广泛使用的还是传统的溶剂型油墨，溶剂型油墨由颜料、连结料、溶剂、填充剂和辅助剂组成，所用的溶剂主要是芳香烃类、酯类、酮类、醚类等有机溶剂，这些溶剂大都具有毒性，会污染所包装的食品、药物和化妆品等物品；且具有挥发性，有较浓的刺激性气味，会污染环境并影响工人的身体健康；有机溶剂易燃易爆，存在着生产安全隐患。

In this paper, the characteristics of supercritical fluid and principle of supercritical fluid extraction, gas anti-solvent, rapid expand supercritical solution were introduced. The development of supercritical fluid recystallization technology used in manipulating ultrafine explosives desired and SFE developed for demilitarization of energetic material and RESS technology used in coating of energetic material were reviewed.

摘 要：在阐述了超临界流体的性质和超临界萃取(Supercritical Fluid Extraction， SFE)、超临界流体溶液快速膨胀结晶（Rapid Expand Supercritical Solution， RESS）和气体反溶剂结晶（Gas Anti-solvent， GAS）过程原理的基础上，重点介绍了近年来超临界流体技术在含能材料细化，废弃炸药回收与利用，炸药包覆等方面所取得的研究进展。

From an economic point of view, a solvent having a small minimum solvent flow is a better entrainer and should result in a lower cost design than a solvent having a large minimum solvent flow.

从经济的角度看，最小溶剂流量较小的溶剂比最小溶剂流量较大的溶剂成本低廉，是优良共溶剂。

A steel bar is washed and dried, and then put into a glass pipe which is sealed to obtain stirring magneton; a mixed solvent of Gamma-methacrylate oxide propyl trimethoxy silane and methanol is prepared and added with an organic base to obtain a pre-bonding solvent; the stirring magneton is immerged into the pre-bounding solvent, and the outer surface of the glass pipe of the stirring magneton is bonded with a layer of silane substance with alkenyl; a reactive monomer mixture and a pore-forming agent mixed solvent are evenly mixed and then added into a container, the stirring magneton after the pre-bounding is put into the container which is sealed and then put into a water bath; after reaction, the container is removed, the stirring magneton coated with a polymer is taken out and put into a extractor and extracted by using a solvent; or the stir bar is immersed into the solvent till no impurity can be checked in the solvent, thereby obtaining the product.

将铁条清洗干燥，放入玻璃管内，密封得搅拌磁子；配制γ-甲基丙烯酸氧丙基三甲氧基硅烷与甲醇的混合溶液，加入有机碱得预键合溶液，将搅拌磁子浸入预键合溶液，在搅拌磁子的玻璃管外壁键合一层带烯基的硅烷化物质；将反应单体混合剂和致孔剂混合溶液混匀后倒入容器中，将预键合后的搅拌磁子放入容器，密封后置于水浴中，反应后除去容器，取出涂有聚合物的搅拌磁子，置于提取器中，以溶剂提取，或将搅拌棒置于溶剂中浸泡至溶剂中无杂质检出，得产物。

The research on bound rubber and reinforcing effect of mineral filler showed that there are four kind of interactions between filler and rubber matrix in uncured mix The unbounded rubber on the surface of filler will solve in organic solvent The rubber bounded by stronger physical or chemical interaction with filler will dissolve in organic solvent The bound rubber on the surface of filler by different extent acid-base interactions will solve in basic organic solvent The bound rubber on the surface of filler by chemical action (no acid-base type) will dissolve in basic organic solvent

结合橡胶和增强作用的研究表明，在混炼胶中，硅橡胶与矿物填料的作用形式有四种。没有联结在矿物表面的非结合橡胶和仅靠物理吸附联结在填料表面的硅橡胶将溶解于有机溶剂；与填料有较强相互作用的硅橡胶不溶于有机溶剂；通过不同层次的酸碱作用联接在矿物表面的硅橡胶将溶解于碱性有机溶剂；与填料有牢固化学结合的硅橡胶不溶于碱性有机溶剂。

Rhodamine B, Malachite green, Auramine O, Bismark Brown,Methyl Violet 5BN, Basic Magenta, Acid Orange II, Chrysophenine GX, Direct Fast Black G, Indigo, Sulphur Black, Solvent Red 24, Solvent Red 49, Solvent Brown 41, Solvent Orange 3,Pigment Yellow 154,155, Pigment Red 188,208, Meta-Diethyiaminophenol, M-Amino acetanilide , P-Amino acetanilide, etc.

主要产品：碱性玫瑰精，碱性品绿，碱性嫩黄O，碱性品红，碱性紫5BN，碱性红6DDN，酸性橙II，靛蓝，硫化黑，直接冻黄，直接黑G，溶剂红24，溶剂红49，溶剂棕41，溶剂橙3，溶剂橙62，颜料黄154，155，颜料红188，208，间羟基－N，N－二乙基苯胺，间氨基乙酰苯胺，对氨基乙酰苯胺。

The present invention provides a method for preparing biodegradable and biocompatible, porous, polymeric scaffolds for tissue engineering, which comprises the steps of: dissolving a polymer in an organic solvent to prepare a polymeric solution; mixing an effervescent salt in the resulting polymeric solution to give a polymer/salt/organic solvent mixed gel; removing the organic solvent from the polymer/ salt/ organi c solvent mixed gel; and effervescing the salt in the resulting polymer/salt gel to yield a polymeric scaffold.

一种用于组织工程学的生物可降解和生物相容的多孔聚合物支架的制备方法，该方法包括下列步骤：在一种有机溶剂中溶解一种聚合物以制备聚合物溶液；在所得的聚合物溶液中混入泡腾盐，得到聚合物／盐／有机溶剂混合的凝胶；从聚合物／盐／有机溶剂混合的凝胶中除去有机溶剂；和在酸性溶液中浸泡所述凝胶以使所述盐泡腾产生聚合物支架。

Draw and add the solvent only to once, recycle in a set of sealed equipment, the solvent in the dregs of a decoction can be retrieved out basically, so solvent consumption than many of draw pot to be 30% more than less only, the consume can reduce 50-70%, it is better for draw with the organic solvent, active principle in the sublimating of the traditional Chinese medicine.

提取只加1次溶剂，在一套密封设备内循环使用，药渣里的溶剂基本上能回收出来，故溶剂用量比多只提取罐少30%以上，消耗率可降低50～70%，这为用有机溶剂提取，提纯中药中有效成份铺平了道路。

According to the boiling range, solvent oils can be divided into three categories: hydrocarbos solvent, such as the 6＃ oil extraction solvent, boiling range for 60-90 ° c; alkanones in solvent, such as rubber solvent naphtha, boiling range of 80-120 ° c; high-boiling solvent, such as oil paint solvents, boiling range for 140-200 ° c, in recent years the widely-used ink solvent naphtha, the stem is up to 300 ° c.

按沸程分，溶剂油可分为三类：低沸点溶剂油，如6＃抽提溶剂油，沸程为60-90℃；中沸点溶剂油，如橡胶溶剂油，沸程为80-120℃；高沸点溶剂油，如油漆溶剂油，沸程为140-200℃，近年来广泛使用的油墨溶剂油，其干点可高达300℃。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。