查询词典 ethanol

The interaction of tributyltin, the main components of antifouling paint of ships, and its degradation products of monobutyltin and dibutyltin with human serum albumin was investigated by ultraviolet, fluorescence and circle dichromism spectra. The influences of the concentration, acidity, organic solvent such as ethanol and ionic strength on the interaction of butyltin compounds and HSA molecule were examined to find that the interaction of butyltin compounds and HSA was dual.

通过紫外、荧光和CD光谱，研究了船体防污漆中主要防污成分——三丁基锡化合物及其降解产物——一丁基锡和二丁基锡与人血清白蛋白相互作用的方式与程度，考察了浓度、酸度、有机溶剂和离子强度等因素对相互作用的影响。

Extraction conditions of ethanol were optimized by orthorhombic analysis. The best condition: extracting temperature (30℃), extracting time (6h), shakers rotating speed (200 r/min), the ratio between Dictamnus dasycarps Turcz.

通过正交试验对白鲜皮的无水乙醇提取条件进行了优化，确定其最佳的提取条件为提取时间6h，白鲜皮与溶剂质量体积比为1∶10，提取温度30℃，摇床转速200r／min，提取3次。

Omeprazole racemate was resolved respectively by simulated moving bed chromatography and batch chromatography with the coated cellulose triphenylcarbamate as chiral stationary phase and ethanol containing 0.1% diethylamine as mobile phase.

用纤维素三苯基氨基甲酸酯涂敷型手性固定相和含0.1%二乙胺的乙醇溶液，研究了模拟移动床色谱和间歇色谱对奥美拉唑对映体的拆分。

The effect of short chain monohydric alcohols (ethanol, n-butanol) and dihydric alcohols (ethyleneglycol, 1,4-butanediol) on the aqueous two-phase system of cationic and anionic surfactants is studied.

研究了短链一元醇和二元醇(乙二醇、1，4-丁二醇)对正负离子表面活性剂混合溶液(十二烷基硫酸钠-十六烷基三甲基溴化铵-水)双水相的影响。

It is an extraction and separation system of potential industrial applications.This dissertation studies on the liquid-liquid equilibrium of water/ ethanol/ isobutanol system in detail, and investigated the partition coefficients for dipotassium glycyrrhizinat in the system.

本文对由水+乙醇+异丁醇组成的水+混合溶剂萃取体系的液液相平衡关系做了较为详细的研究，并探讨了该体系对甘草酸二钾的萃取分配规律。

The partitioning behavior and the influence of five amino acids（glutamic acid, cysteine, phenylalamine, lysine and arginine）in aqueous twophase systems of ethanol and dipotassium hydrogen phosphate have been studied.

研究了5种结构和性质各异的氨基酸（谷氨酸，半胱氨酸，苯丙氨酸，赖氨酸，精氨酸）在亲水性有机溶剂乙醇和磷酸盐溶液形成的乙醇/K2HPO4双水相体系中的分配行为及其影响因素。

The temperature affects partition of dipotassium glycyrrhizinat but the effect is minor. On the same time pH has major impact on the partition of dipotassium glycyrrhizinat. The coefficient is eight times higher when pH reaches 2. The improved Diamond-Hsu model can be used to correlate the partition coefficient of dipotassium glycyrrhizinat in the system of water/ethanol/isobutanol. The result of Infrared and TG analysis indicate the extraction product has the same characteristic features with dipotassium glycyrrhizinat.

结果表明：体系的初始点越靠近临界点，甘草酸二钾的分配系数越大；温度对甘草酸二钾的分配有～定的影响，但分配系数随温度变化不大；pH值对甘草酸二钾的分配有较大的影响，在pH=2附近，分配系数高出其他位置达8倍；改进的Diamond-Hsu模型可以用于关联甘草酸二钾在水+乙醇+异丁醇体系中的分配系数；红外和TG分析结果表明萃取产物与甘草酸二钾样品的性质特征相同。

Hydrophilic organic phase/salt containing aqueous system; extraction; liquid-liquid equilibrium; turbidity-density analysis method; L-lysine; dipotassium hydrogen phosphate; ethanol; isopropanol

工程科技II，工业通用技术及设备，工程基础科学亲水有机相/含盐水体系；萃取；液液相平衡；浊度-密度法； L-赖氨酸；磷酸氢二钾；乙醇；异丙醇

In order to investigate the mechanism for this reac-tion, methyl α-bromoacetate or ethyl α-bromoacetate as starting material was added to the solution of phenyl selenoamide in ethanol in 1∶1 or 2∶1 molar ratio under the neutral condition at room temperature. The results indicated that the same product bis or bis diselenide was formed. Byproduct ethyl benzoate was also separated.

为了研究该反应机理，选择α-溴代乙酸甲酯或α-溴代乙酸乙酯在无催化剂、中性条件下，乙醇溶液中与苯基硒代酰胺室温下反应，投料比为1∶1和2∶1，结果也都生成了同一类产物二甲氧羰基甲基二硒醚或二乙氧羰基甲基二硒醚，同时还分离得到了相应的副产物苯甲酸乙酯。

In order to investigate the mechanism for this reaction, methyl α-bromoacetate or ethyl α-bromoacetate as starting material was added to the solution of phenyl selenoamide in ethanol in 1:1 or 2:1 molar ratio under the neutral condition at room temperature. The results indicated that the same product bis or bis diselenide was formed. Byproduct ethyl benzoate was also separated.

为了研究该反应机理，选择α-溴代乙酸甲酯或α-溴代乙酸乙酯在无催化剂、中性条件下，乙醇溶液中与苯基硒代酰胺室温下反应，投料比为1：1和2：1，结果也都生成了同一类产物二甲氧羰基甲基二硒醚或二乙氧羰基甲基二硒醚，同时还分离得到了相应的副产物苯甲酸乙酯。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。