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Treated with methanol and potassium hydroxide, also known as lye, the vegetable oil molecules break down.

植物油分子经过甲醇和钾的氢氧化物、也被称作灰汁的处理后就被分解。

Result: The methanol extracts and BuOH fraction of Potentilla bifurca showed strong tyrosinase inhibitory activities.

结果:光叉叶委陵菜的甲醇提取物及其正丁醇萃取物显示较强的酪氨酸酶抑制作用。

The methanol extract conditions of Potentilla anserina and their antioxidant activities werestudied simultaneously.

研究了用甲醇提取蕨麻中类黄酮的工艺条件,并对其进行了抗氧化性能的研究。

The standard cell potential of each condition and the activity coefficients of KI in the mixed solvent were obtained by associating the experimental values using power series expansion method, the extended Debye-Hückel equation and the Pitzer equation.

用电动势法测定了KI在甲醇含量为0%、20%、60%、100%的甲醉-水混合溶剂中的电动势,用幂级数展开方法、扩展的Debye-Hückel方程及Pitzer方程关联不同溶剂组成下电动势的实验值,得到电池的标准电动势Eo和KI在混合溶剂中的活度系数。

A calculation model based on artifical neural networks technology was proposed and used in the calculation of activity coefficients of methanol propanol water system.

提出了一种基于人工神经元网络的活度系数计算模型,并成功地应用于甲醇丙醇水系统的活度系数计算。

The linear relationship to detect methanol was not effected by a few amount of ethanol, acetone and propanol etc.

乙醇、丙酮和丙醇等干扰物不影响测定的线性关系,特别对水的交叉敏感相当低,可以在真实的大气条件下测定甲醇的含量。

Propanol, on the other hand, can successfully break down epoxy.

然而乙醇和甲醇虽然能够有效溶解玻璃纤维复合材料中的聚酯树脂,但对环氧树脂的溶解效果欠佳,而丙醇则可成功地分解环氧树脂。

We prepared the pyrethric acid II through four reactions: esterification, oxidation, decomposition, diesterification. And the original synthesis route of the pyrethric acidII was improved: the yield of oxidation of allyl rise through increasing the activity of Selenium dioxide; in the document, tert-butyl-trans -2, 2-dimethy1-3-(2"-methoxycarbony1-1"-propenyl)cyclopropanecarboxy late was synthesized from tert-butyl-trans-2,2-dimethyl-3-(2 -formyl-r -propenyl) cyclopropanecarboxylate with two steps, with low yield.

我们经过酯化,氧化,成双酯,热分解四步反应,成功地得到了第二菊酸,并改进了原第二菊酸的合成路线:通过改变二氧化硒的活性提高了烯丙甲基的氧化产率;将原路线中醛氧化成羧酸、羧酸酯化的两步反应改为醛和甲醇、二氧化锰等作用一步直接酯化的方法,减少了反应步骤,提高了总收率。

The resonant peak shifted towards longer wavelength with the increasing volume fraction of methanol,ethanol,propyl alcohol,acetone and formaldehyde with high sensitivities and linear relations.

结果表明,谐振波长随甲醇、乙醇、丙醇等醇类化合物,以及丙酮、甲醛等蒸气体积分数的上升而向长波方向移动,具有高的灵敏度,且两者基本呈线性关系。

Some research and analysis on the reaction of 2,4-difluoronitrobenzene and nucleophilic reagent alcohol sodium (methyl alcohol ,ethyl alcohol, propyl alcohol, n-butyl alcohol, t-butyl alcohol, et hl) and the reaction choice of opposite -F in different solvent and conditions have done in this paper.

论文以2,4-二氟硝基苯为主要原料,研究了其与亲核试剂醇钠(甲醇、乙醇、丙醇、正丁醇、叔丁醇等)在不同溶剂中的反应情况,讨论了在几种代表性的溶剂——醇、四氢呋喃、苯、N,N-二甲基甲酰胺中亲核取代反应的情况,研究了温度、反应时间、亲核试剂、溶剂等条件对亲核取代反应的影响。

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