查询词典 ethanol

The effect of aqueous ethanol (50% v/v) on the activity of purified mushroom polyphenol oxidase has been found to be as follows:(1)The oxidation of catechol or pyrogallol is greatly stimulated,an increase in the rate of oxygen uptake of over 100% having been invariably observed with catechol as the substrate,whereas the oxidation of other substituted o-dihydric phenols is inhibited in 50% ethanol.

三无论有无抗坏血酸的存在，50%乙醇对多酚氧化酶活力的提高程度是一样的，在有一定量的抗坏血酸的存在下，多酚氧化酶对儿茶酚的 Michaelis 常数(25℃)在水溶液及50%乙醇溶液中各为0.072×10~(-3)M 及0.49×10~(-3)M。

The leaching rate of raffinose were investigated under different ethanol concentrations in ethanol-water solution, leaching temperature, extraction time and cottonseed-meal/sovent ratio.

分别考察了不同浓度的乙醇水溶液、浸取温度、浸出时间和料液比的操作工艺条件对棉籽糖浸取率的影响。

The experiments show that the PS and PSD of particles produced by SAA process can be controlled by adjusting process parameters, and among them, the pressure of the saturator used has the most effect on the PS and PSD, while the temperature of the saturator has the least effect. When using ethanol as solvent, the optimum operating conditions of using SAA process to produce erythromycin micro-particles from erythromycin-ethanol-CO2 system were found as follows. The pressure and temperature of the saturator are 10.5MPa and 70℃, respectively, the inlet flow rate and the concentration of inlet solution of the precipitator are 9 mLmin^(-1) and 15mgmL^(-1), respectively.

实验结果表明：选用乙醇做溶剂可制备出粒径在1~3μm的红霉素超细微粒，大部分微粒形态呈完整的球形；各影响因素对微粒粒径及粒径分布均有不同程度的影响，其中混合器压力对微粒粒径及粒径分布的影响最明显，混合器温度的影响最小，微粒粒径及粒径分布可通过改变操作参数进行控制；在本研究范围内，最优操作条件为混合器压力10.5MPa，混合器温度70℃，溶液浓度15mgmin^(1)，进液速度9mLmin^(1)。

Using the stolon of the Paris polyphylla as the experimental material, the extraction ratio of steroidal saponin has been studied with the orthogonal test of L16(4^5), in which the 4 factors are extraction time, ethanol concentration, ultrasonic time and the ratio for the mass of raw material drug to the volume of ethanol, and then the optimized extraction has been obtained.

以滇重楼的根茎为实验材料，重楼甾体总皂甙的提取率为评价指标，运用L16(4^5)正交试验，考察了皂甙浸出过程中的浸泡时间、乙醇浓度、超声剂量、粗粉质量与浸泡用乙醇体积之比4个因素在4个水平下的工艺过程，筛选出了最佳提取工艺。

Draw the effective composition of the red red-spotted stonecrop through drawing the law in ultrasonic wave at first, learn through the experiment that drawing time , density , firm liquid in supersound will have remarkable influence than on the drawing rate of supersound; 60% ethanol solution of solution, than remarkable ultrasonic reciprocation of time firm liquid have; The best experiment condition is: Solvent solution, firm liquid than for 1:10, draw 45min for 60% ethanol..

首先通过超声波提取法，来提取红景天的有效成分，通过实验得知超声提取时间、浓度、固液比对超声提取率均有显著的影响；溶液中的60%乙醇溶液，固液比及超声时间的交互作用显著；最佳实验条件为：溶剂为60%乙醇溶液、固液比为1：10、提取45min。。

The extent of inhibition of depolarization by superfusion of ethanol for 5 minutes was 41.8±3.3 ％(n=17). The addition of 5 nM and 20 nM KT5720 (a selective protein kinase A inhibitor) and 250 μM H9 dihydrochloride (a non-selective protein kinase inhibitor), into the intracellular solution significantly attenuated the inhibitory effects of ethanol.

当分别将5 nM或20 nM KT5720（选择性蛋白质激酶A抑制剂）或250 μM H9 dihydrochoride（非选择性蛋白质激酶抑制剂）置入细胞内液时，乙醇的抑制作用明显被减弱；但乙醇的抑制作用不受到5 nM或20 nM calyculin A（磷酸酶1/2A抑制剂）的影响。

To prepare silica particles, 100 or 200 μl of 10% TEOS in ethanol was added to a mixture of 4.4 ml water and 15 ml ethanol.

为了合成硅颗粒，100或者200uLTEOS的乙醇溶液（TEOS含量10%）加入到4.4ml水和15ml乙醇的混合溶液中。

The whole analysis was completed on a C〓 column in 18min at a flow rate of 0.5 ml/min, with the mobile phase of methanol-water (93: 7, v: v) containing 75 mmol/L TEOLA and 200 mmol/L HAc, or with the mobile phase of ethanol-water (90: 10, v: v) containing 25 mmol/L TEOLA and 200mmol/L HAc pumped at 0.25ml/min. Compared with the methanol system, the ethanol system was a better candidate for the separation of thulium porphyrin complexes in view of selectivity.

在C〓分析柱（5μm，2.5×150mm）上，流动相为：甲醇：水＝93：7（v/v内含75mmol/L三乙醇胺和200mmol/LHAc），流速为0.5ml/min和流动相为：乙醇：水＝90：10（v/v，内含25mmol/L三乙醇胺和200mmol/L HAc），流速为0.25ml/min，均能使六个铥卟啉配合物在18min内得到有效的分离，相比之下，乙醇体系对铥卟啉配合物更具有分离选择性。

The expansion results of ethanol-water solutions under compressed CO2 demonstrated that liquid phase expanded tinily when ethanol content was less than 30%.

这表明体系中的沉淀作用主要是等电沉淀，在实验考察范围内加压CO_2抗溶剂沉淀作用不明显。

Effective conversion of xylose to ethanol is a key step for ethanol production from lignocellulosic materials.

木糖的乙醇发酵是利用木质纤维原料生产乙醇的关键环节。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了