And the impact of trichloroacetic acid concentration and stewing time on deprotein ation and polysaccharide were also studied.

考察TCA法中的三氯乙酸濃度和時(shí)間對(duì)脫蛋白和多糖的影響国产福利久久无码91，并且利用化學(xué)發(fā)光法研究黃皮銅蘭水提多糖對(duì)H2O2的清除作用免费国产va视频永久在线看。

And the impact of trichloroacetic acid concentration and stewing time on deproteination and polysaccharide were also studied.

考察TCA法中的三氯乙酸濃度和時(shí)間對(duì)脫蛋白和多糖的影響亚洲黄网专区在线观看，并且利用化學(xué)發(fā)光法研究黃皮銅蘭水提多糖對(duì)H2O2的清除作用精品自拍偷拍视频。

Synthesis of isopropyl chloroacetate catalyzed by acidic ionic liquids was studied,including influences of different ionic liquids,reaction temperature,reaction time and quantity of ionic liquid.

研究了功能化酸性離子液體催化合成氯乙酸異丙酯的反應(yīng)欧美精品一区二区精品久久，考察了不同離子液體黄页视频免费看网站、反應(yīng)溫度、反應(yīng)時(shí)間和離子液體與反應(yīng)物物質(zhì)的量比等對(duì)反應(yīng)的影響免费人成在线观看网站照。

By comparing the dehydration methods of three catalytic esterification reactions and the catalysts used under negative pressure, the better method of synthesizing 2 ethylhexyl chloroacetate is using stannous oxide as catalyst under negative pressure.

通過(guò)對(duì)三種催化酯化反應(yīng)的脫水方法及負(fù)壓下使用不同催化劑的比較和選擇色妞一区二区三区视频在线，提出了以氧化亞錫為催化劑負(fù)壓脫水合成氯乙酸2乙基己酯的方法亚洲人人一区二区三区。

In this paper, the applications of the environmental friendly solid acid catalysts for esterification were studied and the activities of these catalysts were discussed, by which the solid acid ferric sulfate x-hydrate was used first as catalyst in the synthesis of dimethyl fumarate and ethyl chloroacetate and solid super acid SO42-/Fe2O3 was used first as catalyst in the synthesis of ethyl p-nitrobenzoate.

本文研究了對(duì)環(huán)境友好的固體酸催化劑在酯化反應(yīng)中的應(yīng)用，首次以固體酸Fe_2(SO_4)_3·xH_2O為催化劑合成了新型防霉劑富馬酸二甲酯和化工原料氯乙酸乙酯啪啪视频一区，以固體超強(qiáng)酸5O_4~(2-)／Fe_2O_3為催化劑合成了醫(yī)藥中間體對(duì)硝基苯甲酸乙酯2828一区二区欧美，并探討了這些催化劑的催化活性。

The effects of mole ratio of chloroacetic acid to ethyl alcohol, catalyst dose, water-carrying agent dose and reaction time on the yield of ester are tested.

研究了氯乙酸與乙醇的摩爾比欧美性爱生活、催化劑用量澳门一级A片免费播放、環(huán)己烷的用量、反應(yīng)時(shí)間諸因素對(duì)產(chǎn)品收率的影響久久精品视频30。

The experimental values of the critical concentration were in agreement with the calculated ones based on the Khokhlov-Semenov-Odijk theory, which indicated that the lyotropic behavior of chitosan in dichloroacetic acid can be well described with wormlike chain model.

臨界濃度的實(shí)驗(yàn)值與根據(jù)Khokhlov-Semenov-Odijk理論預(yù)示的值比較一致日韩欧美人妻精品，說(shuō)明蠕蟲(chóng)鏈模型可以很好地描述殼聚糖分子鏈在二氯乙酸中的溶致液晶行為。

The cholesteric liquid crystalline solution of ethyl-cyanoethyl cellulose/dichloroacetic acid C/DCA showed multi-texture behavior with variation of concentration.

乙基氰乙基纖維素／二氯乙酸溶液形成的膽甾相的聚集態(tài)結(jié)構(gòu)隨著濃度的變化會(huì)呈現(xiàn)出多種織構(gòu)形態(tài)日本XXWWXXWW视频免费。

The methods of deprotein of ginger polysaccharide extract were compared among trichloroacetic acid method, digallic acid method and Sevag method.

以新鮮的生姜為試材黄片一级三级高清黄色视频，通過(guò)正交試驗(yàn)研究了生姜多糖的最佳提取方案，比較了三氯乙酸法中国黄色一级A片免费看视频、鞣酸法和Sevag法脫蛋白的效果A无码三级片电影免费。

In the CMKGM preparation section,with the indicators of DS andη, the optimum laboratory conditions preparation of a certain molecular weight of the high DS of CMKGM: reaction time (5～6) h, the theory of the degree of substitution (2～3), the molar ratio of monochloroacetic acid to Sodium hydroxide (2:1～3:1),the reaction temperature (55～65)℃, liquid ratio (10:1～12:1)mL/g, containing enthanol (50～70)%.

CM(來(lái)源：5e60ABC論文網(wǎng)www.abclunwen.com)KGM制備工藝研究中，以取代度aigao视频在线、表觀粘度為指標(biāo)超碰在线伊人网，建立了制備一定摩爾質(zhì)量的高DS的CMKGM的實(shí)驗(yàn)室制備條件：反應(yīng)時(shí)間(5～6)h、理論取代度(2～3)中文字幕av免费专区久久、氫氧化鈉與氯乙酸摩爾比(2：1～3：1)人人超碰人人超碰人人、反應(yīng)溫度(55～65)℃、液料比(10：1～12：1)mL/g国产麻豆日韩在线观看网站免费、乙醇體積分?jǐn)?shù)(50～70)%黄页网站免费观看的视频高清。