季盐

Main compositions: Quaternary ammonium salt, ahurian Angelica Root, menthone and Tannic Acid.

主要成份：季铵盐、白芷、薄荷酮及鞣酸等，内含天然渗透性因子。

The epoxy resin/methyl-nadic anhydride/organophilic montmorillonitecomposite was prepared,in which the OMMT was modified by long chain alkyl quaternary amˉmonium salts.

采用长链烷基季胺盐对蒙脱土进行有机改性，将改性后的蒙脱土与双酚A型环氧树脂以及酸酐固化剂充分混合固化制得复合材料。

These products include sodium percarbonate, percarbamide, 4Na 2SO 4·2H 2O 2·NaCl adduct, tertiary amine oxides, hydrazine hydrate, dihydroxy benzene, quaternary ammonium salt hydrogen peroxide and methylethyl ketone oxime.

介绍了近期国外过氧化氢在部分化学品合成中应用研究新进展，产品包括过碳酸钠、过碳酰胺、4Na2 SO4·2H2 O2 ·NaCl加合物、叔胺氧化物、水合肼、二羟基苯、季铵盐过氧化氢和甲乙酮肟。

Inorganic chemistry ; hydrogen peroxide ; review ; sodium percarbonate ; percarbamide ; 4Na 2SO 4·2H 2O 2·NaCl adduct ; tertiary amine oxides ; hydrazine hydrate ; dihydroxy benzene ; quaternary ammonium salts hydrogen peroxide ; methylethyl ketone oxim

无机化学；过氧化氢；综述；过碳酸钠；过碳酰胺； 4Na2SO4·2H2O2·NaCl加合物；叔胺氧化物；水合肼；二羟基苯；季铵盐过氧化氢；甲乙酮肟；合成；催化剂；质量；安定性；收率

A new imidazolinyl intermediate is prepared from phenylacetic acid and diethylenetriamine firstly, and then they react with the solution of sodium chloroacetate into the imidazolinyl quaternary ammonium salt.

以二甲苯为溶剂，苯乙酸和二乙烯三胺为原料，经酰胺化和环化脱水合成了新型咪唑啉化合物，并用氯乙酸钠溶液对其进行改性得到了苯乙酸咪唑啉季铵盐。

First, organic pillared montmorillonite were prepared in which three kinds of organic quaternary ammonium salts were used as pillaring agent. Physiochemical properties of organic pillared montmorillonites were characterized by XRD, FT-IR, TG-DTA. Furthermore their characters that have been testified are excellence.

首先用三种有机季胺盐作为柱撑剂制各出有机柱撑蒙脱石，并通过XRD、FT-ZR、TG-DTA等测试手段对其进行了表征，并且对制备的有机柱撑蒙脱石进行了性能测试，证明其性能优良，说明利用干法制备有机柱撑蒙脱石是切实可行的。

Cetyl pyridinium bromide monohydrate is used to exchange the metal irons in the innerlayers of sodium-based bentonite which is used as raw material and the organobentonites are obtained with orthogonal technique by changing the reaction conditions such as reaction time,reaction temperature,pH,the quantity of quaternary ammonium,and the ratio of bentonite to water.

采用正交L16(45)实验法，以Na基膨润土为原料，用溴化十六烷基吡啶为插层剂，与膨润土层间的金属离子进行离子交换，通过改变反应温度、反应时间、pH值、固液比、季铵盐添加量5个因素，得到不同条件下的有机膨润土。

OBJECTIVE To investigate qacE-sull gene resistant to the quaternary ammonium compounds and sulphonamide compounds in Gram negative bacteria in order to provide the information of bacterial resistance to disinfectants.

目的检测革兰阴性菌中耐季铵盐消毒剂-磺胺复合物的qacE-sul1基因，为临床提供细菌对消毒剂的耐药信息。

Objective: To investigate qacE-sul1 gene of resistant to the Quaternary Ammonium Compounds and Sulphonamide Compounds in Gram negative bacterium in order to provide the information of bacterial resistance to disinfectants.

目的：检测革兰阴性菌中耐季铵盐消毒剂-磺胺复合物的qacE-sul1基因，为临床提供细菌对消毒剂的耐药信息。

Three cationic surfactants, N -dodecyl- N -(2-hydroxyethyl)- N , N -dimethylammonium bromide, N -tetradecyl- N -(2-hydroxyethyl)- N , N -dimethylammonium bromide and N -cetyl- N -(2-hydroxyethyl)- N , N - dimethylammonium bromide have been synthesized.

合成了 N -十二烷基- N -(2-羟乙基)- N ， N -二甲基溴化铵、 N -十四烷基- N -(2-羟乙基)- N ， N -二甲基溴化铵和 N -十六烷基- N -(2-羟乙基)- N ， N -二甲基溴化铵等3个季铵盐阳离子表面活性剂。

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。