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Acids with different cation were distinguishingly different in activation energy and frequency factor distribution.

不同阳离子同种羧酸盐,活化能和频率因子分布却相差很大。

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These werecharacterized by cyclic voltammetry in the presence of ferrocenemonocarboxylate and hexamine ruthenium as probe molecules.

这些用以单羧酸铁和六甲基四胺合钌作为探针分子循环伏安法来表示。

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Aconitase is an enzyme that catalyzes the conversion of citric acid to isocitric acid in tricarboxylic acid cycle.

摘要乌头酸酶在三羧酸循环中催化柠檬酸成异柠檬酸。

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So far, we have synthesized pentadecane diacid , which is a very important intermediate product during preparing muscone.

到目前,我们已经合成了制备麝香酮中重要一步中间产羧酸

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Stereoselective oxidative dimerization of the enolate of carboxylic acid derivatives is summarized focusing on the stereoselectivity of the process.

羧酸烯醇盐氧化聚成键规律,重点是立体选择性过程。

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A novel family of ester acetal molecular glass materials has been created by the reaction between monocarboxylic acid and divinyl ethers.

通过一元羧酸乙烯基醚反应,我们得到了一种新颖酯缩醛结构分子玻璃。

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The diisoamyl glutarate in catalysis of silicotungsticacid was preparated by esterification of isoamyl alcohol and glutaric anhydride seperated from dicarboxylic acid.

用硅钨杂多酸为催化剂,以从羧酸中分离出酸酐和异戊醇为原料合成了戊异戊酯。

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They are formed byatmospheric photochemistry reaction, and could product OH radical, alkyl radical, ozone,carboxylic acid peroxyacetyl nitrates by atmospheric photochemistry reaction.

羰基化合既是大气光化学反应,又能通过光化学反应羧酸、羟基自由基、臭氧和过氧乙酰硝酸酯。

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This part we introduce complexes synthesized by hydrothermal method containing inorganic polyacid, bipyrindine, organic polyacid, pyridine-carboyxlate, and mixed polyacid and polybase ligands.

我们分类介绍了,水热条件下合成含无机同多或杂多酸配体、联吡啶、 有机多酸、 吡啶羧酸和混合酸碱配体配位化合

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A new method for the synthesis of 1 methyl 3 propylpyrazole 5 carboxlic acid from 2 pentanone and diethyl oxalate is reported.

以2-戊酮和草酸乙酯为起始原料,经缩合、与甲基肼环合、水解等三个步骤合成了1-甲基-3-丙基吡唑-5-羧酸

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The most commonly used method for the covalent binding of biomolecules onto 1-D nanostructures is through the diimide-activated amidation of carboxylic acid terminated nanostructures.

最常用方法是通过端羧酸基纳米结构酰亚胺活化氨基化合来进行分子与1-D纳米结构共价结合。

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This study focused on the recovery of aromatic polycarboxylic acids from the mother liquor of manufacturing trimellitic anhydride and it's application for making mixed plastifier.

本研究对产偏酐所产母液中含有芳香族羧酸加以回收,用于产混合酯增塑剂。

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Research and development for fhe production of pyrocatechol and hydroquinone by reaction of phenol with hydrogen peroxide and percarboxylic acid as hydroxylating reagent are introduced.

着重介绍用过氧化氢和过氧化羧酸作羟基化剂,使苯酚羟基化成邻苯酚和对苯研究开发进展。

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It is a precursor in the synthesis of various amino acids, such as alanine, and of malic acid and oxaloacetic acid, both intermediates in the KREBS CYCLE.

在各种氨基酸比方丙氨酸以及苹果酸和草酰乙酸合成中作为前体。苹果酸与草酰乙酸均是三羧酸循环中间产

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The results of biochemical analysis indicated that the difference of the activity of carboxylesterase and esterase isozymes in the larval midguts were the main mechanism of this selective toxicity.

化分析结果进一步指出,昆虫中肠羧酸酯酶活性及酯酶同功酶差异是这种选择麻醉作用重要机制。

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听力文摘

Trying to memorize the Kreb's Cycle?

想要记住羧酸循环?

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双语版 TED-Ed 精选

Carboxylic acids are in the mix, too, adding notes of cheese.

羧酸也混在其中增加了芝士的味道。

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WIL生活启示录

The pyruvate goes through the TCA cycle, produces a bunch of citrate, and that gets converted down to VLDL.

丙酮酸经过羧酸循环,产生一堆柠檬酸盐,并且被转换成 VLDL。

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CNN 10 学生英语 2022年10月合集

Now the study found that 50 molecular compounds were higher in mosquito magnets especially carboxylic acid on the skin.

现研究发现,招蚊子喜爱的人群中有50种分子化合物更多,尤其是羧酸

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Osmosis-消化

When energy is needed - all three monosaccharides are metabolized through glycolysis, then the citric acid cycle, and oxidative phosphorylation.

当机体需要能量时,种单糖就会通过糖酵解、羧酸循环、氧化磷酸化进行能量代谢。

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Crash Course 综合篇

It's also got the carboxylic acid though, so let's go ahead and call it butenoic acid.

不过它也含有羧酸, 所以让我们继续称之为丁烯酸。

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化学 Crash Course

For example if we have a carbonyl bonded to a Hydroxyl, that, my friends, is a Carboxylic Acid.

例如,如果我们有一个与羟基键合的羰基,那,我的朋友们, 就是一个羧酸

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21世纪英文报

Also, mosquitoes are most attracted to a kind of chemical called carboxylic acid, which is usually produced by bacteria on human skin.

此外,蚊子最容易被一种名为羧酸的化学物质吸引,这种化学物质通常由人类的细菌产生。

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Crash Course 综合篇

Numbering the other way, 1-2-3-4, the carboxylic acid is on carbon 1 (that's pretty ideal).

以另一种方式编号, 1-2-3-4, 羧酸在碳 1 (这非常理想)。

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Newsweek

Some have suggested that these chemicals, including carboxylic acids, may have arrived on Earth from space, traveling via comets and meteorites to the forming planet.

一些人认为,包括羧酸在内的这些化学物质可能是从太空中通过彗星和陨石到达地球的。

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化学 Crash Course

Carboxylic Acids are the acid part of amino acids, which make up proteins, which make up, you, so they're pretty important.

羧酸是氨基酸的酸性部分, 它构成蛋白质,构成你,所以它们非常重要。

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化学 Crash Course

For caboxylic acids, you have to identify it's an acid, so you end in acid, that's obvious, but instead of adding '-ylic' you add '-oic'.

对于羧酸,您必须确定它是一种酸,所以您以酸结尾, 这很明显,但不是添加“-ylic” ,而是添加“-oic” 。

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Newsweek

Carboxylic acids are a type of organic compound characterized by a carbon (C) atom doubly bonded to an oxygen (O) atom and singly bonded to a hydroxyl group (-OH) .

羧酸是一种有机化合物,其特征是一个碳(C)原子与一个氧(O)原子双键结合,并与一个羟基(-OH)单键结合。

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化学 Crash Course

Acetone has a ketone group and it's called 'acetone' because it was derived from acetic acid, which is vinegar, the most common carboxylic acid in your kitchen.

丙酮有一个酮基,之所以称为“丙酮”,是因为它是从醋酸中提取的,醋酸是厨房中最常见的羧酸

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化学 Crash Course

While carboxylic acids are ketones bonded to an OH group instead of an R group, and ethers are just alcohols bonded to an R-group instead of a hydrogen.

羧酸是键合到 OH 基团而不是 R 基团的酮,而醚只是键合到 R 基团而不是氢的醇。

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化学 Crash Course

Just looking at this Carboxylic Acid thing, if you think about the electronegativity of those two oxygens, you can imagine that that hydrogen there is gonna be pretty weakly held.

看看这个羧酸,如果你考虑这两个氧的电负性, 你可以想象那里的氢会很弱。

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Crash Course 综合篇

The most weighted of all is the carboxylic acid functional group, so no matter what else is on a six carbon chain, if there's a carboxylic acid, then it's a hexanoic acid.

最重要的是羧酸官能团,所以无论六碳链还有什么, 如果有羧酸, 那么它就是己酸。

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Osmosis-内分泌

After that happens, the liver turns the fatty acids into ketone bodies, like acetoacetic acid and beta hydroxybutyric acid; acetoacetic acid is a ketoacid because it has a ketone group and a carboxylic acid group.

此后,肝把脂肪酸转化成酮体,比如乙酰乙酸、β-羟基丁酸;乙酰乙酸是一种酮酸,因为它有酮基团和羧酸基团。

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Crash Course 综合篇

If it's a six carbon chain with a carboxylic acid on it and an alcohol on one of the other carbons, our name has to do two things: identify that the hydroxyl group is there and identify where it is.

如果它是一个六碳链, 面有一个羧酸, 另一个碳有一个醇,我们的名字必须做两件事:确定羟基的存在并确定它的位置。

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