查询词典 dibasic carboxylic acid

Under the selected conditions of the chromatographic operation,there was fair separation of caproic acid,1-octanol and octyl caproate.

在选定的色谱操作条件下，三者具有良好的分离效果，并求出了三者的标准曲线方程，该方法具有较好的准确性和重现性。

Synthesis of ethyl caproate by a strong acid cation exchange resin catalyst

研究了以强酸性阳离子交换树脂为催化剂，环己烷作带水剂，冰醋酸与异戊醇合成乙酸异戊酯的反应条件。

Besides, the main physiochemical indexes of new craft liquor including alcohol content, total acid, total ester, the content of ethyl caproate, solids, and other additives must meet the requirements of national standards.

生产的新工艺白酒的主要理化指标如酒精度、总酸、总酯、己酸乙酯含量、固形物及卫生指标和调加的其他添加剂必须符合国标要求。

Xifeng liquor is famous for it's shorter fermentation period in liquor－making field.But because of this typical craft,Xifeng liquor has lower content of total ester and total acid,which has disadvantage to aroma producing.Especially ,the amount of ethyl caproate is lower evidently than that of the main products in the market.

摘 要：西凤酒以发酵期短而在酿酒界闻名，西凤酒工艺的典型性决定了西凤酒总酯含量和总酸含量低，不利于多种呈香物质的放香，特别是己酸乙酯含量远低于目前市场上俏销的主流产品。

The separation and determination of caproic acid,1-octanol and octyl caproate by high performance liquid chromatography on the Kromasil C18(150 mm×4.60 mm,5 μm) column with V∶V=95∶5 as mobile phase and with refractive index detector were also studied.

按常规有机合成方法合成了己酸正辛酯，采用在Kromasil C18(150 mm×4.60 mm，5 μm)柱上，以V∶V=95∶5为流动相及示差折光检测器的反相高效液相色谱法，30 ℃分离和测定了己酸、1-辛醇及己酸正辛酯。

Insecticidal sucrose octanoate and sucrose caproate were synthesized by transesterification method or reaction of acid chloride with sucrose.

分别以酯交换法和酰氯法合成了辛酸蔗糖酯和己酸蔗糖酯两种杀虫活性蔗糖酯，其中酯交换法产物单酯含量高，而酰氯法反应速度快。

In the different precursors, sodium caproate, sodium pyruvate, sodium succinate and sodium citrate could increase ABA production, but calcium propionate and amino acetic acid could inhibit ABA production.

微生物发酵法是近年来新兴起的脱落酸生产方法，二十世纪九十年代初，日本人应用固体发酵技术，以灰葡萄孢发酵生产ABA获成功[2 ] 。

Capsid The protein coat of a VIRUS, which surrounds its nucleic acid.

衣壳：病毒的外壳蛋白，包围着核酸。

Capsid proteins are involved in recognition and infection of the host and can be used to identify the virus by serological means or amino acid sequencing.

衣壳蛋白与寄主的识别和感染有关，还可以通过血清学的方法或氨基酸序列来识别病毒。

RESULTS: Using LXR-deficient mice, we showed an alteration of the lipid composition of the caput epididymidis as well as a significantly decreased expression of the genes encoding SREBP1c, SCD1 and SCD2, involved in fatty acid metabolism.

结果：在LXR缺失的小鼠中发现附睾头部的脂质组分发生改变，有关脂肪酸代谢的基因如SREBP1c， SCD1和SCD2的表达有明显的下降。

Alternatively, the con- trollers can use the synchronous rectifier itself or loss- less inductor current-sensing methods to provide overload protection with lower power dissipation.

另外，康威特罗勒斯可以使用同步整流器本身或亏损减少电感电流检测方法，以提供低功耗过载保护。

Mr. Dauber's other Schatz hangs in his home movie studio.

多伯把沙兹的另一件作品挂在家里的电影室。