查询词典 butanol

The results extracted from poly-Chinese herbal medicine containing 11 kinds of herbals with water, chloroform, n-butanol saturated with water and ethyl ethylic ester under normal decocting condition and microwave-assisted extraction with water solvent were also compared.

复方中药用微波辅助水煎煮萃取和常规水煎煮萃取后，所得的结果初步表明，对于用水萃取的多糖类等不同性质的有效成分和正丁醇萃取的苷类有效成分，二种方法的结果基本一致。

A new method employing furoic acid and the n-butanol to synthesize the furoic acid-n-butyrate flavor has been reported in this paper.

以糠酸和正丁醇为原料，改性钼镍粉作催化剂取代以往常用的硫酸作催化剂，合成糠酸正丁酯香料。

Using a simple and reliable apparatus,the solubilities of glutaric acid in water,ethanol,toluene,chloroform,n-butanol and acetone are determined by the analytic method.

用平衡法分别测定了戊二酸在水、乙醇、甲苯、氯仿、正丁醇、丙酮中的溶解度数据。

We made use of the solubility differences of three acids in chloroform, n-butanol and water under different temparatures by solvent separation method,then we separated the succinic acid, glutaric acid and adipic acid with high purity from mixed dibasic acids successfully.

由溶剂分离法，利用三种酸在氯仿、正丁醇和水中不同温度下溶解度的差异，成功的从混合二元酸中分离出纯度较高的丁二酸、戊二酸和己二酸。

At the same time, for the alternatives, another set of devices was also set up according to balanced method. From above two experiments, we got solubility datas of succinic acid, glutaric acid and adipic acid in six solvents of water, ethanol, n-butanol,choloroform, acetone and toluene, of which most were measured for the first time.

由合成法和平衡法实验测定了丁二酸、戊二酸和己二酸三种溶质在水、乙醇、正丁醇、氯仿、丙酮、甲苯六种溶剂中的溶解度数据，其中大部分体系和溶解度数据是首次测定。

The hypha growth-inhibiting method and the virulence determination method were used to investigate the inhibition effects of the petroleum ether fraction, chloroform fraction, ethyl acetate fraction, n-butanol fraction and water fraction in the alcoholic extracts from the aboveground of Peganum harmala L.

采用抑制菌丝生长法和毒力测定法，研究了骆驼蓬地上部醇提物的石油醚、氯仿、乙酸乙酯、正丁醇和水5个极性部位对南瓜枯萎病菌、西瓜枯萎病菌Fusarium oxysporum f。

Mixing and dilution heterotactic enthalpies of aqueous n-butanol solutions and aqueous amino acids (glycine, L-alanine, L-proline, L-valine) solutions were determined at 298.15 K by flow microcalorimetric system of 2277 Thermal Activity Monitor. The data were analyzed by using the McMillan-Mayer theory to obtain the enthalpic interaction coefficients.

利用2277热活性检测仪的流动测量系统获得了298.15K时甘氨酸、L-丙氨酸、L-缬氨酸和L-脯氨酸分别与n-丁醇在水溶液中混合过程的焓变以及各自的稀释焓，依据McMillan-Mayer理论关联得到异系焓相互作用系数，讨论了不同氨基酸与n-丁醇分子的作用机理。

N-butanol was prepared with bromine and hydrobromic acid in the laboratory.

实验室制备正溴丁烷是用正丁醇与氢溴酸反应制备。

At present, the main operators of chemical species have: propionaldehyde, n-butanol, isobutanol, octanol, isobutyraldehyde, acrylic esters, such as n-butyraldehyde .

目前主要经营的化学品种有：丙醛，正丁醇，异丁醇，辛醇，异丁醛，丙烯酸酯，正丁醛等。

The synthesis of butyl isobutyrate with n-butanol and isobutyric acid as reactants and rare-earth solid superacid SO_4~(2-)/TiO_2/La~(3+) as catalyst has been studied.

研究了以稀土固体超强酸 SO_4~（2－）／TiO_2／La~（3＋）为催化剂，异丁酸和正丁醇为原料合成异丁酸丁酯，并考察了影响反应的因素。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。