乙醛酸

yǐ quán suān
  • Glyoxylic acid;glyoxalic acid
乙醛酸乙醛酸
  1. 求得的乙醛酸理论分解电压Ed接近为一常数(-1.00v)。

    The theoretical decomposition potential of glyoxalic acid could be a constant ( -1.00 V ) approximately .

  2. 乙醛酸合成方法及其应用

    Synthetic methods of glyoxalic acid and its application

  3. 方法:采用乙醛酸溶液制作大鼠肾结石模型,采用反转录聚合酶链反应(RT-PCR)技术检测肾结石大鼠OsteopotinmRNA的表达。

    Methods : The rat model of calculus of kidney was made by glyoxylic acid .

  4. 为了测定异柠檬酸裂解酶的活性,需要实时测定NADH量的减少。异柠檬酸在异柠檬酸裂解酶催化下形成乙醛酸,乙醛酸可通过乳酸脱氢酶和NADH还原成甘醇酸酯。

    To determine the activity of the isocitrate lyase , the glyoxylate formed during catalysis was reduced to glycolate by lactate dehydrogenase with the concomitant oxidation of NADH .

  5. 用氢氧化钙粉末将反应混合液调节在不同的pH范围内,草酸钙(pH1.0~1.5)和乙醛酸钙(pH2.5~3.0)便接近定量析出。

    Controlling the pH value of the reaction mixture with powdered calcium hydroxide could quantitatively precipitate calcium oxalate ( pH1.0 1.5 ) and calcium glyoxylate ( pH2.5 3.0 ) respectively .

  6. 实验得到其最佳反应条件为:尿素与乙醛酸摩尔比4:1,反应温度70℃,反应时间8h。在此条件下,尿囊素产率达到69.6%。

    The experimental results showed that the activity of the catalyst R1 was higher and the yield was 69 . 6 % under the optimal reaction condition of molar ratio of urea and glyoxylic acid 4:1 , reaction temperature 70 ℃ and reaction time 8 h.

  7. 结果表明:在电解温度为20℃,电流密度为350A/m2,使用钽铱电极,电解草酸饱和溶液8h后,乙醛酸产率达81%。

    In the cell with lead cathode and iridium tantalum anode , under the condition of temperature of 20 ℃, current density of 350A / m 2 , electrolytic time of 8 hours , the yield of glyoxylic acid can reach as high as 81 % .

  8. 研究比较了几种Lewis酸对α-甲基苯乙烯和乙醛酸乙酯反应合成α-羟基-4-苯基-4-戊烯酸乙酯(EHPP)的催化性能,其中SnCl4的催化活性最高。

    Synthesis of ethyl α - hydroxy-4-phenyl-4-pentenoate ( EHPP ) by reaction of α - methyl styrene and ethyl glyoxylate was carried out in the presence of Lewis acid catalysts . The results show that SnCl_4 has the highest catalytic activity .

  9. 结果表明,用碳板做电极材料,电流密度为66.7A·m-2,电解液流速为261mL·min-1,电解温度为20℃时,乙醛酸的电流效率可高达80%以上。

    The results indicateed that with electrodes of carbon board under 20 ℃, flow rate of 26 12 mL · min - 1 and current density of 66 7 A · m - 2 the current efficiency of synthesis of glyoxylic acid could reach 80 % and over .

  10. 愈疮木酚和乙醛酸合成香兰素研究

    Research on the Synthesis of Vanillin from Guaiacol and Glyoxylic Acid

  11. 乙醛酸循环体发现于油脂种子的贮藏组织中。

    Glyoxysomes are found in the storage tissues of fatty seeds .

  12. 同时生产二氧化氯和乙醛酸绿色工艺研究

    Green process of simultaneous production of chlorine dioxide and glyoxylic acid

  13. 乙醛酸助铬鞣应用工艺的研究

    Study on application technology of aldehyde acid in aiding chrome tanning

  14. 愈创木酚和乙醛酸缩合反应的影响因素

    On the Influence Factors of Condensation Reaction by Guaiacol and Glyoxylic Acid

  15. 基于乙醛酸作还原剂的新型化学镀铜工艺研究

    Research on Electroless Copper Plating Process Using Glyoxylic Acid as Reducing Agent

  16. 成对电解同时合成丁二酸和乙醛酸

    Synthesis of Succines Acid and Glyoxylic Acid by Paired electrolysis

  17. 乙醛酸的合成&乙二醛硝酸氧化法

    Synthesis of glyoxylic acid & By means of oxidation glyoxal with nitric acid

  18. 乙醛酸工艺制备香兰素的研究

    Research on Production of Vanilla by Glyoxylic Acid Technology

  19. 乙醛酸的生产及其下游产品的开发应用

    Production of Glyoxylic Acid and the Development and Application of it Down Stream Product

  20. 乙醛酸/草酸混合溶液吸附分离特性研究

    Study of adsorptive separation properties of mixture solution of glyoxylic acid and oxalic acid

  21. 乙醛酸生产方法及研究进展

    Progress in Research of Glyoxylic Acid Production Processes

  22. 乙醛酸合成的研究

    Study on the Synthesis of Glyoxylic Acid

  23. 乙醛酸的合成研究进展

    Research Progress on Synthesis of Glyoxylic Acid

  24. 乙醛酸法合成香兰素缩合反应的催化研究

    Study on the condensation reaction for preparing vanillin from guaiacol and glyoxylic acid by various catalysts

  25. 乙醛酸循环[支路]新界环回公路改善计划

    New Territories Circular Road Improvements

  26. 国内乙醛酸法合成乙基香兰素新工艺的进展及发展趋势

    The Achievement of New Technology and Development Trend on Synthesizing of Ethyl Vanilin by Glyoxylic Acid Method

  27. 电位滴定用于乙醛酸的分析

    Electrometric Titration of Glyoxylic Acid

  28. 这与乙醛酸循环体和乙醛酸支路的酶类只限于脂肪贮藏组织是矛盾的。

    This is in contrast to the restriction of glyoxysomes and the glyoxylate bypass enzymes to fat-storing tissues .

  29. 以苯酚和乙醛酸为原料,对对羟基苯乙酸制备中的缩合反应过程进行了研究。

    Condensation reaction of phenol with glyoxylic acid in the preparation of 4 - hydroxyphenyl acetic acid has been investigated .

  30. 尽快推进乙醛酸法工艺的运行以解决环保问题;

    Push forward the improvement of the acetaldehyde acid craft as soon as possible which can solve environmental pollution problem ;