查询词典 formic acid

Under the optimum conditions, the extraction rates of the two most important inhibitors, namely formic acid and acetic acid, were up to 84% and 98%, respectively.

在最佳试验条件下，两种最重要的抑制物甲酸和乙酸的抽提率分别达到84%和98%。

A high cutting efficiency required the acid environment and urea as a solutizer had an advantage over 70% formic acid in facilitating cleavage.

高效率的切割需要在酸性条件下进行；以尿素作为促溶剂比70%的甲酸更有利于小肽的切割。

Methods 4-Hydroxy- benzonitrile was treated with sodium hydrogen sulfide and anhydrous magnesium chloride in dimethyl formamide to give thioamide, which was then directly cyclized with ethyl 2-chloroacetoacetate without separation to give ethyl 2-(4-hydroxyphenyl)-4-methylthiazole-5-carboxylate(2) in one-pot; then 2 was formylated with Duff reaction adopting hexamethylenetetramine in trifluoroacetic acid to give ethyl 2-(3-formyl-4-hydroxyphenyl)-4-methylthiazole-5-carboxylate(3); finally, the target compound was obtained by the treatment of 3 with hydroxylamine hydrochloride and sodium formate in formic acid.

采用&一勺烩&方法，以4-羟基苯甲腈为起始原料，首先与硫氢化钠和无水氯化镁在N，N-二甲基甲酰胺中反应，所得中间体不经分离，直接加入2-氯乙酰乙酸乙酯进行环合反应，得到2-(4-羟基)苯基-4-甲基-5-噻唑甲酸乙酯（2）；然后通过六亚甲基四胺/三氟乙酸进行Duff反应，得到2-(3-甲酰基-4-羟基)苯基-4-甲基-5-噻唑甲酸乙酯（3）；再经盐酸羟胺/甲酸/甲酸钠体系脱水得到目标化合物。

In Expt.1, that the effects of microbial inoculants and formic acid on the pH, the number of LAB, yeast and mold, and the formation of lactic acid was evaluated during the different periods of corn silage (after day0.5, 1,2, 3,5, 7, 10, 20, 40 and 60 of ensiling) using the methods of laboratory silos and microbiology techniques.

原因在于本试验接种的乳酸菌数量较少，发酵过程中没有成为优势菌群。添加甲酸在发酵初期抑制了乳酸菌的增殖，降低了乳酸的生成量和青贮初期的pH值，提高了青贮后期pH值；对酵母和霉菌最初表现为促进增殖的作用，5天以后对酵母有较强的抑制作用。

The addition of formic acid inhibitted the growth of LAB at the early stage of the fermentation, decreased the production of lactic acid and the pH of the early stage of the silage and increased initially the growth of the yeast and mold but inhibitted the growth of mold after 5 days of ensiling.

结果表明：单独添加植物乳杆菌增加了乙酸生成量和总有机酸生成量，降低了乳乙酸比；单独添加戊糖片球菌减少了乙酸生成量和总有机酸生成量，提高了乳乙酸比；二者均延缓了pH值的下降速度。

This article discussed the influence factors of productivity of formic acid such as the mol ratio of sodium formate and phosphoric acid, the addition of phosphorus pentoxide, vapouring temperature.

对原料配比、五氧化二磷加入量、蒸馏温度对甲酸产品浓度、产率的影响进行了实验。

The results showed that the ultimately productive rate of formic acid reached 95.75% when the mol ratio of sodium formate and phosphoric acid was 1:1.30, the quantity of phosphorus pentoxide was 35.73 g, vapouring temperature was 115℃.

实验结果表明：在一定实验体系中，甲酸钠与磷酸摩尔比为1：1.03、五氧化二磷加入量为35.73 g、蒸馏温度为115℃时，甲酸最终浓度可达到95.75%。

Methanol and ethylene glycol poisoning; Methanol and ethylene glycol are both metabolised by alcohol dehydrogenase, the same enzyme that metabolises ethanol, to formic acid and oxalic acid, respectively.

甲醇和乙烯乙二醇中毒；甲醇和乙烯乙二醇二者经过乙醇脱氢酶——代谢乙醇的同一代谢分别形成蚁酸和草酸。

Methanol and ethylene glycol poison ing; Methanol and ethylene glycol are both metabolised by alcohol dehydrogenase, the same enzyme that metabolises ethanol, to formic acid and oxalic acid, respectively.

甲醇和乙烯乙二醇中毒；甲醇和乙烯乙二醇二者经过乙醇脱氢酶——代谢乙醇的同一代谢分别形成蚁酸和草酸。

Compared with formic acid, oxalic acid is cheaper, and the cost is reduced; a scale production can be achieved.

与甲酸相比，草酸价格更便宜，这种方法不仅降低了生产成本，而且易于工业化生产。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。