查询词典 glyoxal

The saturated concentration of glyoxal dihydrazone in acetonitrile solution at pH 1.75 and 20 ℃ was 20.2 mg/L.

在20 ℃、pH 1.75的乙腈溶液中，乙二醛二腙的溶解度为20.2 mg/L。

For the synthesis of NHC precursors, there are also several routes: condensation of glyoxal, amines and paraformaldehyde; alkylation of imidazole or monosubstituted imidazole with alkyl halide; annulation of ortho esters and 1,2-diamines; ring closure of hydrazines or amides with acetic anhydride; reduction of thiones with Na/K in THF.

关于N-杂环卡宾前体的合成途径主要有：乙二醛、伯胺和多聚甲醛的缩合反应；卤代烷与咪唑及其取代咪唑的烷基化反应；原甲酸酯与1，2-二胺的成环反应；肼或酰胺与酸酐的环化反应；用Na/K对环硫脲化合物的还原反应。

Based on the absorption property of glyoxime which can be formed by addition reaction of aldehyde group and hydroxylamine in the UV-spectral region,spectrophotometric determination of glyoxal in glyoxal solution was proposed.

利用醛基与羟胺在酸性条件下的成肟反应产物乙二醛二肟对紫外光的吸收特性，用紫外分光光度法测定乙二醛的含量。

Production technology of synthesis of allantoin are reviewed, including glyoxal oxidation, electrochemical synthesis, calcium glyoxylate synthesis, dichloroacetic acid synthesis, acetochloral method, and oxidative decarboxylation.

评述了乙二醛氧化法、电化学法、乙醛酸钙法、尿素三氯乙醛合成法、尿酸二氯乙酸法和尿酸氧化脱羧法等合成尿囊素的各种工艺。

The emphasis was on chemical properties,application,main production methods,market,and prospects of main deriva- tives of acetaldehyde such as ethyl acetate,pentaerythritol,glyoxal,peracetic acid, crotonaldehyde and pyridine.

介绍了国内外乙醛及其主要衍生物的生产技术发展及其市场供需状况，尤其对乙醛主要衍生物乙酸乙酯、季戊四醇、乙二醛、乙醛酸、丁烯醛、吡啶的化学性质与用途、主要生产方法、市场供需状况及开发前景作详细介绍和分析。

Production technology of synthesis of allantoin are reviewed, including glyoxal oxidation, electrochemical synthesis, calcium glyoxylate synthesis, dichloroacetic acid synthesis, ace-tochloral method, and oxidative decarboxylation.

评述了乙二醛氧化法、化学法、醛酸钙法、素三氯乙醛合成法、酸二氯乙酸法和尿酸氧化脱羧法等合成尿囊素的各种工艺。

Effects of glyoxal on anti-oxidase in rats were studied by observing the activity changes of GSH-Px in blood and tissues after exposure.Glyoxal was instilled through respiratory track.

通过观察乙二醛染毒大鼠血及组织中谷胱甘肽过氧化物酶活力的变化，探讨了乙二醛对抗氧化酶活力的影响。

Suitable pharmaceutical carriers (e.g., Eupergit or Glyoxal agarose beads) are known in the art and vary according to the route of administration.

适合药学载体(如Eupergit或Glyoxal 琼脂珠)是本领域中已知的且根据给药途径改变。

The glyoxal and glyoxalic acid contents in the solution of oxidation of acetaldehyde to glyoxal by nitric acid were determined by this method, the repeatabilities of analysis results were excellent and the relative error compared to chemical analysis of glyoxal was 1.77%.

用HPLC测定乙醛硝酸氧化法制乙二醛反应液中乙二醛和乙醛酸的含量，结果的重复性好；对乙二醛的测定结果与应用化学分析法测定结果的平均相对误差为1.77%；对反应液中乙二醛、乙醛酸含量的测定有着较高的加标回收率，分别为99.6%～103.3%和98.1%～102.4%。

In this paper, the glyoxal structure both in reagent and in bulking solution were detected by infrared spectro and mass spectra, the result shows that there is no aldehyde group but only hydrate existing in both solutions. Besides, the mechanism of the ac-tion between glyoxal and waterlogged wood is discussed and some problems like how to prevent the bulk-ing solution from acidification are also mentioned.

此外，还运用红外光谱和质谱法测定了试剂乙二醛和加固液的结构，详细讨论了乙二酯在试剂和加固液中官能团的存在形式和聚合状态的细微变化，指出在二种溶液中并不存在醛基，乙二醛仅以水合物的形式存在并讨论了乙二醛与饱水古木的作用机理，提出用醇溶液能有效控制乙二醛使用中易返酸等问题。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新