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- Carboxylic acid esters are important chemical raw materials. 羧酸酯是重要的化工原料。
- Sulfuric acid is main catalyst for the synthesis of carboxylic acid esters. 羧酸酯的合成主要用硫酸作催化劑，但這種催化劑有許多缺點(diǎn)。
- The scheme initially involves acylation of thiophene using a carboxylic acid to afford the acyl thiophene. 這條路線(xiàn)是先用羧酸使噻吩已?；频盟峄绶?。
- One exception is the decarboxylation of aromatic carboxylic acids. 芳香羧酸進(jìn)行脫羧反應是一個(gè)例外。
- Carboxylic acid was peroxidized in organic solvents catalyzed by lipase and glycidol was synthesized from allyl alcohol catalyzed by acid peroxide. 摘要利用脂肪酶在有機介質(zhì)中催化制備過(guò)氧酸，丙烯醇在過(guò)氧酸的作用下發(fā)生環(huán)氧化反應生成環(huán)氧丙醇。
- Nitric acid oxidation was found to reduce the surface hydroxyl (OH) groups in increasing the carboxylic acid (COOH) groups. 硝酸氧化減少了碳纖維表面的羥基含量，同時(shí)增加了碳纖維表面的羧基含量。
- A dual system-A200 AAA/IC-system, which can be used as amino acid analyzer and ion chromatograph was presented. 摘要新開(kāi)發(fā)的A200型氨基酸-離子色譜分析儀既是一種專(zhuān)用型氨基酸分析儀，也能作為離子色譜儀，適用于農產(chǎn)品品質(zhì)檢測和產(chǎn)地環(huán)境檢測。
- In the reaction, some aniline is completely oxidized to CO2 or partially oxidized to carboxylic acid. 在反應中有一部分苯胺被完全氧化或部分氧化成CO2或羧酸，
- PVAC latex is prepared by the polymerization of the new type of ethylene carboxylic acid . 采用乳液聚合制備了新的丙烯酸改性的聚乙酸乙烯酯(PVAC)乳液。
- SDS-PAGE, two-dimensional electrophoresis apparatus and amino acid analyzer were used for systematic detection of protein in beer and in beer foam. 利用SDS-PAGE、雙向電泳儀、氨基酸分析儀對啤酒和啤酒泡沫中蛋白進(jìn)行了系統的檢測,并探討了泡沫活性蛋白的組成。
- Preparation methods and degradation behavior for poly(carboxylic acid silyl ester)s were reviewed. 綜述了聚羧酸硅基酯的合成方法和降解性質(zhì)。
- The formate activates the carboxylic acid and functions as a source of nucleophilic alkoxide. 羧酸甲酸激活的職能和核醇源泉.
- The paper introduces the catalyst research advances in esterification reaction of carboxylic acid. 本文介紹了羧酸酯化反應催化劑的研究進(jìn)展。
- Amino acid contents in th blood and wool of 55 German Angora rabbits were measured at two growth stages ( 2-month-old and 5-month-old ) using an automatic acid analyzer. 采用氨基酸自動(dòng)分析儀分別測定了55只德系安哥拉兔毛血液游離氨基酸和兔毛氨基酸含量。
- Ingredients: Chamomile extract, hamamelis extract, pyrroldone carboxylic acid, HA, etc. 主要成份：春黃菊提取液，金縷梅提取液、吡咯烷酮羧酸、透明質(zhì)酸等。
- Nereis in Penaeus vannamei feed was studied.Fatty acid and amino acid were detected with GC-MS and automatic amino acid analyzer, and then nutrition value was evaluated. 摘要以南美白對蝦飼料中的沙蠶為研究對象，通過(guò)氣相色譜-質(zhì)譜聯(lián)用儀和氨基酸自動(dòng)分析儀分析檢測其體內的脂肪酸和氨基酸，之后對其營(yíng)養價(jià)值進(jìn)行了分析評價(jià)。
- Pyruvic acid A 3-carbon carboxylic acid (CH3COCOOH) that is an intermediate in GLYCOLYSIS. 丙酮酸：一種三碳羧酸(CH3COCOOH)，是糖酵解的中間物。
- Nereis in Penaeus vannamei feed was studied.Fatty acid and amino acid were detected with GC-MS and automatic amino acid analyzer,and then nutrition value was evaluated. 以南美白對蝦飼料中的沙蠶為研究對象,通過(guò)氣相色譜-質(zhì)譜聯(lián)用儀和氨基酸自動(dòng)分析儀分析檢測其體內的脂肪酸和氨基酸,之后對其營(yíng)養價(jià)值進(jìn)行了分析評價(jià)。
- FD is a kind of retanning agent condensated with glyoxal,formaldehyde,carboxylic acid and urea. 復鞣劑FD是一種由乙二醛、甲醛、羧酸衍生物、尿素等縮合而成的兩性皮革復鞣劑。
- The last step is the oxidation reaction that converts the alkyne triple bond to carboxylic acid group. 通過(guò)對五種醛和三種末端炔進(jìn)行的條件篩選，確立了通用合成方法。
