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After the clean version with ethyl mixtrue: such as: aminomethylbenzoic (8: 2), ethhyl: aminomethylbenzoic: ketone (7: 2: 1) in respect of problem-solving abilities, but here's a question is: If you use ethhyl, aminomethylbenzoic can be solved, it is best not butanone, because ketone residues of odoural a stronger, it may be on the cards and membership cards the quality of the production.

把版洗肮脏后用混分溶剂:如乙酯:甲苯(8:2)、乙酯:甲苯:酮(7:2:1)不离灵验不天处置题纲,但这里给夺纲的一个题纲是:如果用乙酯、甲苯能处置时,最坏务必酮,因为酮的残留气息较淡,不定差制卡和会员卡制息品的质度有感化。

The benzene (or 80% of the butene) and the excess air in a fluidized bed or fixed-bed reactor for oxidation reaction of maleic anhydride was absorbed into the cycle of acid maleic acid.

将苯(或80%的烯)与过量空气在流化床或固定床反应器中进行氧化反应生成顺烯二酸酐,被循环的酸液吸收成顺烯二酸。

Mainly engaged in: Hydrogen-imide hydrochloride, o-chlorophenyl cyclopentanone, 3.4 dimethoxy ethyl benzene, butyn single potassium acid, potassium ethyl malonyl, Ding amide, amide isobutyraldehyde , allyl chloroacetate, isopropyl chloroacetate Benzyl aluminum, cyclopentene, cyanide-o-chlorophenyl, o-methyl chloride, sulfuric acid chloride, p-chlorophenol, imidazole, Pinacolone, one chlorine Pinacolone.

主要经营:盐酸氢亚胺、邻氯苯基环戊酮、3.4二甲氧基苯乙酯、炔二酸单钾盐、丙二酸单乙酯钾盐、酰胺、异酰胺、氯乙酸烯丙酯、氯乙酸苄酯异丙醇铝、环戊烯、邻氯苯氰、邻氯苯甲酯氯、硫酸氯、对氯苯酚、咪唑、频呐酮、一氯频呐酮。

Preparation of butyric acid by oxidation of butyraldehyde was studied.

在反应温度 50~ 60℃,氧醛摩尔比 0 。75~ 0 。875,催化剂与正醛的质量比 0 。1 %~ 0 。2 %,反应时间为 3 h左右的优化的工艺条件下进行了正醛氧化制正酸的研究。

Box 275(26) Beijing 102413, China; 2 Beijing Institute of Nuclear Engineering, Beijing 100840, ChinaAbstract The studies of facts effecting on stripping Np from organic phase with HNO 3 and the determinations of Np in the stripping extractor with the reducer of n butyraldehyde are carried out.

单级实验结果表明,正醛的加入和延长正醛与镎的相互作用时间,有利于从有机相中反萃镎;正醛的加入对铀、钚分配比的影响不大;但铀浓度增加会增加镎的反萃。

On the basis of aerobic oxidation ofβ-ionone catalyzed by supported catalysts/butyraldehyde system,a series of cycloolefines such as cyclohexene,β-methylionone,α-ionone,andα-pinene were oxidized under the general conditions to give corresponding epoxides and allylic oxides.

将三种催化体系CMPS-Co_2/正醛、Co_2/SiIm-正醛、MoO_2_2/SiIm-正醛推广应用到不同环烯烃催化氧化反应,虽然各反应底物之间的转化率和氧化选择性变化很大,但对三种催化体系横向比较而言,其催化氧化情况相当。

Physical stability of liposomes plays the critical roles in various stages of the applications and development of liposomes. In this study, we applied low molecular weight chitosan to modify the liposomes surface, and investigated the physical stability of liposomes, Moreover, we encapsulated cantharidin to study the effects of chitosan which cause drug leakage.

微脂粒稳定性的研究在其应用发展上占有举足轻重的影响,因此本研究利用低分子量水溶性几聚醣来修饰微脂粒表面,观测几聚醣对微脂粒物理稳定性的影响,同时也一并探讨包覆抗癌药物斑蝥素,几聚醣对微脂粒包覆斑蝥素的渗漏情形。

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,得雷尼替碱湿品;将雷尼替碱溶于乙醇中与盐酸反应,制备得到盐酸雷尼替,产品符合欧洲药典标准。

MAIN PRODUCTION: STRETCH SATIN, SATIN, MATTE SATIN, CHARMEUSE SATIN, SATEEN, GEORGETTE, CHIFFON FABRICS SUCH AS SILK PRODUCTS, FABRIC PRODUCTS ARE MAINLY EXPORT TO EUROPE, USA-BASED.

主要生产:弹力色,色,亚光色,静波缎,棉绒缎,乔其,雪纺等仿真丝面料系列产品,面料产品主要以出口欧洲、美国为主。

Reductive conversion of geraniol to citronellol is adopted as a model reaction, and several factors in the reaction are discussed using gas chromatography method. The influence of n-hexane and butyl acetate, as organic solvents, on biocompatibility was studied; the influence of methanol, ethanol, glycol, n-butanol and 1-hexanol, as energy substance, on the transformation efficiency was compared, respectively; the catalysis capabilities of Baker's yeast, XST-KO yeast, LP yeast, alcohol yeast, dry yeast, Saccharomyces cerevisiae, Angel yeast and Meishan yeast were discussed. It has been proved that biocompatibility of n-hexane are much better than that of butyl acetate, and the hexane has been demonstrated the most effective in terms of the influence on biotransformation, Baker's yeast has shown the highest tranformation efficiency among the eight yeast strains.

以香叶醇转化为香茅醇作为模型反应,通过气相色谱法进行定性和定量分析研究了影响该有机相生物转化反应的几个基本因素,考察了两种有机溶剂正己烷和乙酸酯对生物相容性的影响,选用甲醇、乙醇、乙二醇、正醇和l-己醇分别作为能量物质进行实验,比较其对转化的影响并探讨了Baker's酵母、XST-KO酵母、LP酵母、酒精酵母、假丝酵母、干酵母、安琪酵母和梅山酵母八种不同酵母作为生物催化剂对模型反应的催化能力,结果表明,正己烷作为有机溶剂,其生物相容性明显好于乙酸酯,更加有利于该生物转化反应进行;乙二醇作为能量物质,该模型反应转化率最高;而 Baker's酵母作为生物催化剂,对该模型反应的催化能力最强,最适合作为该模型反应的催化剂。

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The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。

The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.

聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力