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酸性反应

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By means of the electron microscopic enzymo cytochemistry, it was observed that the activity of acid phosphatase was localized on the autophagic vacuole, the enzyme reaction granules gather to form the vacuolar bodies of various shapes in the cytoplasmic region of the osmiophilic and paraglycogen granules in resting Stylonychia mytilus .

该文应用电镜酶细胞化学方法显示,贻贝棘尾虫休眠包囊中,在胞质嗜锇粒和拟糖原粒区,酸性磷酸酶反应颗粒聚集于具有消化泡作用的泡状体上,葡萄糖 6 磷酸酶反应也定位在自噬泡膜位置。

The appropriate conditions of polyaminating reaction was that oxycellulose chloride in 200mL DMSO was heated to 100℃with stirring,then was dropwised 10mL A2.3 and A3.4 separately,remaining the temperature for 12h,after pH was justed to 4-5,the products were obtained in 46%yield.

确定多胺化反应的较佳条件:在200mL DMSO搅拌加热至100℃,滴加A2.3和A3.4各10mL,维持温度反应12h,在酸性条件(pH:4-5)下生成,产率大约在46%左右。

Structure of the dehydration product I of pinacol under acidic condition was determine The results show that the dehydration reaction of pinacol gains an advantage over rearrangement reaction.

结果表明,在酸性条件下颇哪醇的脱水反应优于重排反应,由此合成了1,2,4-三苯基环戊二烯。

As a key step of the synthesis, the Friedel-crafts acylation was researched. And the optimal operation variables were determined through orthogonal experiment: when 0.lmol acetanilide, 0.26mol aluminum chloride, 0.12mol propionyl chloride and 200ml carbon disulfide are introduced, and the reaction time is 5 hour, the yield can be up to 57.3%. The solid super acid catalyst was preliminary studied. Four solid super acid catalysts were prepared to take the place of aluminum chloride, and it was indicated that AlCl3 acidic resin can better catalyze the Friedel-Crafts reaction of acetanilide.

对合成路线中的Friedel-Crafts酰基化反应进行了研究,运用正交实验设计确定了最佳工艺条件:当乙酰苯胺用量为0.1mol时,AlCl_3用量为0.26mol、丙酰氯用量为0.12mol、溶剂用量为200ml、反应时间为5h,产率可达到57.3%;对于固体超强酸催化剂进行了初步研究,合成了四种催化剂,其中负载AlCl_3强酸性树脂对于乙酰苯胺的Friedel-Crafts酰基化具有一定的催化活性。

The gelatin-siloxane nano-particles are prepared from gelatin and 3-(2,3-epoxy propoxy )propyltrimethoxysilicane by performing chemical combination and hydrolytic reaction in acidic condition to obtain sol; and adjusting the pH value to slightly alkaline for performing polymerization reaction of silicane.

将明胶和3-(2,3-环氧丙氧)丙基三甲氧基硅烷在酸性条件进行化合、水解反应;将该溶胶的pH值调节至弱碱性,使硅烷发生聚合反应,即可得明胶-硅氧烷纳米颗粒。

Finally, the article discussed the possible mechanism of multi-phase electrochemical degradation of wastewater through the XPS spectrum of the used catalysts surface: In the acid solutions, the electro-generated O_2 may get electrons on the porous graphite cathode and then form H_2O_2, H_2O_2 may diffused to the surface of catalyst and reacted with its active part to produce OH, which in turn can destruct organics. The catalyst functioned as both the catalyst to decompose H_2O_2 and the flocculants to sedimentate the degraded waste.

最后全文结合研究反应后催化剂表面的XPS光电子能谱推断了该体系降解污废水可能的反应机理:在酸性条件下,石墨双阳极产生的O_2被多孔扩散性石墨阴极还原成H_2O_2,并通过扩散传质作用在催化剂的表面活性中心分解为强氧化性中间产物·OH,强氧化性攻击有机物,使其降解为小分子有机物或CO_2和H_2O,催化剂在体系中即起催化作用也起吸附、絮凝作用。

And the chemical constituents of Stachys geobombycis was primarily demonstrated according to precipitation reaction or color reaction with various indicator.

采用试管法和滤纸法,对地蚕的酸性EtOH,纯化水,MeOH提取物进行研究,通过多种指示剂和显色剂的沉淀反应或颜色反应,初步推断地蚕中可能含有的化学成分。

So, there is an especial significance in the case of energy sources shortage and huge energy consumption nowadays. Based on reaction mechanism of alkanolamines with acid gases in this work, selective absorption of H_2S from mixed-gas streams into the aqueous solution of blended amines of MDEA-TBEE has been studied using a static and a dynamic evaluation setup, respectively. TBEE, a severe sterically hindered amine, was added into MDEA to form the blended amines.

开发高效活化剂是酸性气体吸收领域重要的研究方向之一,研究工作采用一乙醇胺为原料,氢气为反应氛围,低压下有机气相通过管式催化反应器合成活化剂哌嗪,考察合成催化剂组成和操作参数对合成反应的影响;将合成产物应用于膜吸收装置和再生装置上考察其吸收和解吸CO_2的性能。

A Photolysis of 5'-deoxyadenosylcobalamin in neutral aqueous solution and methylcobalamin in neutral and acid aqueous solution has been investigated using pulsed, time-resolved photoacoustic calorimetry in the temperature range of 10-30℃. The resultant enthalpy changes, namely CoC bond dissociation energies for the above cobalamins, 129±17, 163±21 and 176±23kJ/mol, respectively, are consistent with the values obtained by thermolytic kinetic method.

运用光声量热法研究10~30°C温度范围内辅酶〓在中性水溶液中和甲基钴胺素在酸性和中性水溶液中的光解反应,测定了其光解反应的焓变,即Co—C键离解能分别为129±17,163±21和176±23 kJ/mol,这些值和文献中用热分解动力学方法测得的值一致。

Some products such as: diisobutyl phthalate, cyclohexylmethyl tridecyl oxalate and 2-isopropylcyclohexanol that have not been reported in the directly oxidation of alkane by traditional method have been obtained, and all the products are used in fuel, leather, textiles, cosmetics and so on.(3) Metal-promoted superacids SO_4~(2-)/SnO_2-M_XO_Y (M= Ce, Co, V, Mo, Ti), which were highly active for this reactions, were investigated in order to improve its acid sites activity, selectivity and stability.

这一在常温常压下以锡系超强酸为催化剂催化氧化碳氢化合(来源:ABCca8cca论文网www.abclunwen.com)物的反应还未见报道:(3)金属改性锡系固体超强酸SO_4~(2-)/SnO_2-M_XO_Y(M=Ce,Co,V,Mo,Ti)在催化氧化反应中表现出很好的催化活性,通过研究表明金属改性剂的加入提高了催化剂酸性,选择性和稳定性;(4)具有光催化活性金属Ti的引入极大的提高了催化剂SO_4~(2-)/SnO_2的比表面积。

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We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称;三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起,称之为挽歌体诗人或者史诗诗人,他们被称为诗人,似乎只是因为遵守格律写作,而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。

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这不是纸上谈兵式的交易,这是人与人的业务,而且涉及金额巨大。