查询词典 purification

ObjectiveTo sieve the best purification method of Herba Leonuri's acidic alcohol- extract by comparing the purification efficiency of different methods.

目的通过对不同精制方法的比较，筛选出益母草酸醇提取液的最佳精制方法。

A basic knowledge of microbiology, will be detected with a microscope observation of micro-organisms, medium Preparation, disinfection and sterilization, separation and purification of micro-organisms, bacteria counting method A chemical analysis of the theoretical knowledge and can use chemical analysis methods and equipment of the components of material analysis Master fermentation process principles, understanding of beer, liquor, fermentation production technology Master protein related knowledge, PAGE gel electrophoresis technology, high-speed centrifugal Genetic engineering master the basic theory of knowledge, the extraction and purification of genes, PCR principle, gene recombination technology Master of the basic theoretical knowledge, the immobilized enzyme, the enzyme preparation Application Master of animal and plant tissue culture techniques of experimental steps studied experimental apparatus: Balance (scales, electronic scales, Analytical Balance), or acidity, spectrophotometer, liquid gas chromatography, acid-base titration apparatus, microscopes, centrifuges, ultrasonic cleaning, constant temperature oscillation incubator, super-clean table, steam sterilization pot, the pot constant temperature water bath, PAGE device apparatus, oven, fermenter, such as PCR instrument.

具备微生物理论基础知识，会用显微镜检测观察微生物，培养基的制备、消毒与灭菌，分离与纯化微生物，细菌的计数法具备分析化学的理论知识，能运用化学分析和仪器分析方法对物质的组分进行分析掌握发酵工艺原理，了解啤酒、白酒、发酵生产工艺掌握蛋白质相关知识，PAGE凝胶电泳技术，高速离心掌握基因工程的基本理论知识，基因的提取和纯化，PCR技术原理，基因重组技术掌握酶的基本理论知识，酶的固定化方法，酶制剂的应用掌握动植物组织培养技术的实验步骤学过的实验仪器：天平（台天平，电子天平，分析天平）、酸度计、分光光度计、液气相色谱仪，酸碱滴定仪器，显微镜，离心机，超声波清洗器、恒温振荡培养箱、超净工作台，蒸气灭菌锅、恒温水浴锅，PAGE电泳装置仪器、干燥箱、发酵罐、PCR扩增仪等。

For purification of nitrogen trifluoride(NF3) which is used as a plasma etchant and cleaning gas for chemical vapor deposition chambers, a few purification methods and equipments may be chosen according to difference in boiling points and physico-chemical properties of NF3 and its impurities.

三氟化氮作为等离子蚀刻剂和化学气相沉积室的清洗气体，可根据粗三氟化氮气体中各组分的沸点及物理、化学性质的差异选择不同的纯化工艺及设备。

The company's full-automatic AC voltage stabilizer has the power, precision purification, purification parameters Series.

公司的交流稳压电源有全自动、精密净化、参数净化等系列。

Sw-cj standard purification worktable is a kind of universal purification equipment, which can be widely used in the situation of local interchanging.

Sw-cj系列标准净化工作台是一种通用性较强的净化设备，广泛应用于各种局部交货环境的场合。

The solutions we provide include natural gas and biogas purification, natural gas dehydration, hydrogen purification for fuel cell and industrial applications, and specialized solutions for other gases. Xebec also offers compressed air treatment solutions.

我们为客户提供的解决方案包括：天然气和生物气净化、天然气脱水、氢气净化、压缩空气净化处理，应用于燃料电池以及工业应用以及其他气体的特殊解决方案。

Quanzhou Pu Jiakang water equipment Wholesale Center, established in 2000, is a company specializing in water purification treatment professional enterprises, Zero and a variety of water purification treatment equipment.

泉州市普家康水设备批发中心成立于2000年，是一家专门从事净水处理的专业企业，批零兼各种净水处理设备。

The sewage purification system with soil aquifer treatment process can effectively remove carbonous , nitrogenous and phosphorous pollutants , and the purification mechanisms are also well understood .

土壤渗滤污水净化系统对碳，氮，磷都具有较强的净化效果，且净化机理也基本明确，但对其运行控制的研究比较少。

Results indicate that the optimum extraction conditions are as follows: ultrasonic power is 600W, temperature is 53℃, the ratio of liquid to solid is 8︰1, ultrasonic treating time is 70min, reflux extraction time is 120min, the extraction rate of oleanolic acid is 3.000 mg/g; XDA-1 resin is favorable in purification of OA in Chaenomeles sinensis Koehne, the optimum purification conditions are found to be 0.794 mg/mL of OA concentration, the flow rate of adsorption is 0.5 mL/min; the desorption solvent is 90% ethanol, and the flow rate of elutant is 1.0 mL/min.

结果表明，超声波辅助提取最佳工艺条件为：超声功率600 W、提取温度53℃、液料比8：1、超声波提取70 min，回流提取120 min，齐墩果酸得率为3.000 mg/g；XDA-1型大孔树脂对齐墩果酸具有较好的吸附和解吸效果，最佳纯化工艺条件为上柱液浓度0.794 mg/mL，吸附流速0.5 mL/min；以90%浓度乙醇洗脱，洗脱流速1.0 mL/min，纯化后得提取物中齐墩果酸纯度可达26.55%。

Overally evaluating three kind of plants purification effects as well as its purification ability influence on environment factor and so on,the scene dynamic experiment fmally uses Cyperus alternifolius.L,Cana generalis Bailey repairs the landscape water body of Sanzhoutian Resevroir.

综合考虑静态试验中三种植物的净化效果以及环境对其净化能力的影响等各方面的因素，现场的动态试验最终选定采用风车草和美人蕉来修复三洲田水库景观水体。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失