代尔比

In this paper, through a series of experiments, two series of quaternary-ammounium Gemini surfactants were synthesized, namely the pair alkylene double quaternary ammonium salt surfactant m-s-m·2Br and the pair the alkylene double quaternary ammonium salt surfactant -s-·2Br. We has carried on the attribute with the infrared spectrum to its structure, and to affected the factor which the synthesis pair the alkylene double quaternary ammonium salt surfactant responded to carry on the discussion. We has discovered the synthesis pair the ethylene double quaternary ammonium salt surfactant m-2-m·2Br optimum condition: The bromo alkane and a tetramethyl ethylene diamine mole of ratio is 3.0: 1.0, makes the solvent by the ethyl alcohol, 80℃ under responds for 48 hours in the backflow temperature; Synthesis pair alkylene double quaternary ammonium salt surfactant 12-S-12 ·2Br optimum condition: 12 tertiary amine and 1, 3- propylene dibromide (1, 4- two bromines butane) a mole of ratio is 2.2: 1.0, makes the solvent by the ethyl alcohol, responds for 48 hours in the constant temperature 80 ℃ under backflow.

本文通过一系列的实验，合成了两个系列的Gemini型表面活性剂，即双烷撑双季铵盐表面活性剂m-s-m·2Br和双烷撑双季铵盐表面活性剂-s-·2Br，用红外光谱对其结构进行了表征，并且对影响合成双烷撑双季铵盐表面活性剂反应的因素进行了讨论，找出了合成双乙撑双季铵盐表面活性剂m-2-m·2Br的最佳条件：溴代烷与四甲基乙二胺的摩尔比为3.0：1.0，以乙醇作溶剂，在回流温度80℃下反应48小时；合成双烷撑双季铵盐表面活性剂12-s-12·2Br的最佳条件：十二叔胺与1，3-二溴丙烷(1，4-二溴丁烷)摩尔比为2.2：1.0，以乙醇作溶剂，在恒温80℃下回流反应48小时。

Among the celebrity guests were Halle Berry, Jessica Alba, Gwen Stefani and Gavin Rossdale, Kate Bosworth, Pierce Brosnan, Kate Beckinsale, Anjelica Huston, Jessica Capshaw, Marisa Tomei, Jacqueline Bisset, Jordana Brewster, and Jim Belushi.

其中名人嘉宾包括哈莉贝瑞，杰西卡阿尔巴，格温史蒂芬尼和加文罗斯代尔，凯特博斯沃思，皮尔斯布鲁斯南，凯特贝金赛尔，安吉里卡休斯顿，杰西卡卡普肖，玛丽莎托梅，杰奎琳比塞特，佐纳布鲁斯特和Jim Belushi。

The synthesis method comprises the following steps: adding 2-( 5-(dimethylamino methyl- 2- furyl methyl sulpho ethylamine and 1- methylthio- 1- methylamino- 2- nitro ethylene with a molar ratio of 1.04: 1 into water, heating to 48- 52 Deg. C, reacting 4.5 hours with a vacuum degree of 0.02- 0.05 MPa, cooling, adding sodium-hydroxide of concentration of 10% to regulate the PH value to 11.0- 11.4, filtrating and cooling the filtrate to 0- 2 Deg. C, crystallizing for 12 hours, centrifugally filtrating, and rinsing filter cake with purity water to prepare wet ranitidine alkali; dissolving ranitidine alkali in alcohol and reacting with chlorhydric acid to prepare ranitidine hydrochloride.

合成方法包括：将摩尔比为1.04∶1的2-(5-(二甲氨基甲基-2-呋喃基甲基硫代乙胺与1-甲硫基-1-甲胺基-2-硝基乙烯加入水中，升温至48-52℃，于真空度0.02～0.05MPa反应4.5小时，反应完毕降温，用10％氢氧化钠溶液调pH＝11.0-11.4，抽滤，滤液降温至0～2℃，结晶12小时，离心甩滤，用纯化水漂洗滤饼，得雷尼替丁碱湿品；将雷尼替丁碱溶于乙醇中与盐酸反应，制备得到盐酸雷尼替丁，产品符合欧洲药典标准。

The Stockdale paradox contrasts those who focus with determination on a realistic objective with the fantasists whose slogan is that if you can dream it, you can do it.

斯托克代尔悖论对比了两类人，一类是那些有信念和决心去实现一个现实目标的人，另一类是那些幻想者，他们的信条是如果你能幻想实现你就能实现。

Weingarten died of old age, according to his family, at Challans , Vendée , and was buried in Mauron in Morbihan .

万家顿死于年老，据他的家人，在沙朗，旺代，并在莫龙葬在莫尔比昂。

The main work we did on synthesis: We studied bromination reaction influence factor in detail, such as reaction time、reaction temperature、solvent dosage、reagent mole ratio, and optimized the reaction condition, discussed reaction mechanism rudimentally.

本文在合成方面所做的工作：系统研究了对称二醇的单溴代反应反应时间、反应温度、溶剂用量、反应物摩尔比等因素对产率的影响。

His fame, though still on its upward slope, already overshadowed the soberer reputations of his fellow-clergymen, eminent as several of them were.

他们中间 www.8ttt8.com 有些学者在神学领域中追求深奥的学识所花费的岁月，比丁梅斯代尔先生的年纪还要长；因此 www.8 t tt8。

The process includes the following steps: dissolving bromine in halogenated hydrocarbon, dropping the bromine solution into reactant system comprising pentabromo toluene, halogenated hydrocarbon, free radical initiator and hydrogen peroxide at 50-65 deg.c, and heating to 60-78 deg.c for reflux reaction until the reactant system becomes transparent; filtering the resultant to obtain solid product, washing with carbon tetrachloride and water separately and vacuum drying to obtain pentabromo benzyl bromide.

具体步骤为：将五溴甲苯、卤代烃、自由基引发剂和过氧化氢组成的反应体系加入到三颈瓶中，将0.07～0.1mol的溴溶于50ml卤代烃配成溶液，在50-65℃温度下滴加到反应体系中，滴加时间为50-70分钟，然后升温至60-78℃温度下回流反应，至反应体系逐渐变透明，且不再产生气泡时，将所得产物过滤，得到固体产物，分别用CCl 4 和水洗涤，真空干燥，即得到五溴苄基溴；其中，五溴甲苯与溴的摩尔比为1∶0.7-1∶1.0，溴与过氧化氢的摩尔比为1∶1.0-1∶1.4，自由基引发剂加入量为五溴甲苯重量的1-10％，卤代烃的加入量为反应体系体积的40％-100％，所用溶剂可以直接进行下一批反应，不需要更换溶剂或蒸馏提纯。

I do eat one salad per week (slathered in creamy Italian dressing with crumbled blue cheese on the side), but my fare mainly consists of crackers, assorted cheeses, Sugardale Coneys, onion bagels, Peter Pan Creamy, ground beef, Dan-Dee Bar-B-Q potato chips and Pennysticks pretzels.3 As I inventory it, this diet does appear a bit more revolting than I first thought.

是的，我每周吃一次沙拉（放了大量奶油色的意大利沙拉油，外加弄碎的蓝纹奶酪）。但我的食谱主要是由以下这些东西组成：饼干、混合奶酪、苏加代尔鲑鱼、洋葱百吉饼、彼得·潘奶油巧克力、碎牛肉、丹迪炸薯片以及彭尼斯蒂克斯椒盐卷饼。（在我列出这张食谱的时候，发现它的确显得比我原来想的更让人厌恶。

The major grape varieties for ice-wine: Vidal, Riesling, Gewurztraminer, Chardonnay, Merlot, Scheurebe, Muskateller, Muller-Thurgau, Ortega, Pinot Blanc Pinot Gris,etc. Among them, Riesling is called the Queen of Ice wine for it is the most elegant grape variety in Germany and it has much higher natural acidity. Riesling needs a long time to go before forming its elegant favor, and maintain a high acidity which would well balance the sweetness in ice wine.

目前世界上用来酿造冰酒的葡萄品种主要有：威代尔、雷司令，以及琼瑶浆、霞多丽、梅乐、施埃博、穆思卡得、米勒（Muller-Thurgau）、奥特加、白比诺、灰比诺等，其中雷司令被称为冰酒之母，她是德国最为高贵的白葡萄品种，具有很高的自然酸度。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷