查询词典 purification

In this study, a strain of bacteria capable of producing Phenylalanine dehydrogenase was isolated and was identified as Achromobacter sp. The condition for the enzymatic fermentation, purification and characteristics of the enzyme were carried out in this work.

本研究从土壤中分离筛选到一株产苯丙氨酸脱氢酶的菌株X5-3，对其进行鉴定，并进一步研究了该菌株的产酶发酵条件、酶的初步纯化及该酶的性质。

With Actinidia which is abundant in secondary metabolites of polysaccharide and polyphenol as materials, the extraction effect of different variety and method on the genomic DNA of Actinidia was compared with, and influence of the different part of tissue culture, antioxidant and the method of DNA purification on the yield of genomic DNA was studied.

方法］以富含多糖和多酚次生代谢产物的猕猴桃为材料，比较不同品种在不同方法下的基因组DNA抽提效果，并对不同材料部位、抗氧化剂以及DNA纯化方法等对基因组DNA的获得进行研究。

Following purification by Ni affinity chromatography and stepwise renaturation by dialysis, rB7-B5 showed sound antimicrobial activity in porcine actinobacillus pleuropneumoniae and antibiotics-resistant E. coli. The present study provides basis for the research and development of novel antibacterial preparations.

以经Ni亲和层析柱纯化和多步透析法复性的rB7-B5，对猪胸膜肺炎放线杆菌和耐药性大肠杆菌具有很好的抑菌活性，本研究为新型抗菌制剂的研制和开发奠定了基础。

Objective Study on purification of total astragalosides by macroporous adsorptive resin to provide evidence for their industrialized production.

目的研究黄芪总皂苷的大孔吸附树脂分离纯化工艺，为黄芪总皂苷的工业化生产提供参考。

Objective Study on purification of total astragalosides by macroporous adsorptive resin to provide evidence for their industrialized production.

目的 研究黄芪总皂苷的大孔吸附树脂分离纯化工艺，为黄芪总皂苷的工业化生产提供参考。

After purification, CNTs have super adsorptive properties and are promising hydrogen storage materials.

经过纯化后的碳纳米管具有优异的吸附性能，有望作为新一代的储氢材料。

The concentrations of CODcr and NH4+ vary from low to high, then from high to low in the process of refuse leaching, that is to say that there are three phases which are aerobian decomposition, facultative aerobian and anaerobian decomposition;(3)The time of landfill reaching to stabilize under the condition of filtration, for landfill of Jinqianpu, is at least 86 years if CODcr is regarded as a index; but is about 98 years when NH4+ as an index;(4)The column leaching experiment simulated is carried on interactivity between leachate and different lithologic characters, water-bearing media of different thickness. Some parameters can be determined by calculation, such as, the retained factor and hydro-chemical transportation rate of pollutants in suspended media, which quantitatively analyse the suspended soil capability of components purification and the pollution scope of water bearing media.

垃圾淋滤过程中和经历了一个由低到高、再由高到低的过程，即垃圾填埋过程中经历了好氧分解、兼性好氧分解及完全厌氧分解等三个阶段；（3）垃圾组分在淋滤条件下分解达到稳定的时间，对于金钱堡垃圾填埋场，若以作为考核指标，填埋场达到稳定化时间至少需要86年；若以作为考核指标，则填埋场达到稳定化至少需98年的时间；（4）对垃圾浸泡液与不同岩性、不同厚度含水层介质之间的作用进行了土柱淋滤模拟试验，通过计算污染质在包气带介质中运移的阻滞因子和水化学迁移率等参数，定量地描述了包气带土层对污染质的净化能力和污染范围。

A study on the isolation,purification,antitumour effect and mechanism of AGT from agrimonia pilosa ledeb

中文题名 AGT的分离、纯化工艺，抗癌效果及其抗癌机理的研究

Based on preliminary evaluations of the use of common indoor plants for indoor air purification and revitalization, ALCA joined NASA to fund a study using about a dozen popular varieties of ornamental plants to determine their effectiveness in removing several key pollutants associated with indoor air pollution.

基于对使用普通室内植物净化室内空气和再生新鲜空气的初步评估，美国园林产业联合会与美国国家航空航天局共同赞助了一项研究。该研究用约12种常见的观赏植物，测定它们清除与室内空气污染相关的几种主要污染物的效力。

Based on preliminary evaluations of the use of common indoor plants for indoor air purification and revitalization , ALCA joined NASA to fund a study using about a dozen popular varieties of ornamental plants to determine their effectiveness in removing several key pollutants associated with indoor air pollution .

基于对使用普通室内植物净化室内空气和再生新鲜空气的初步评估，美国园林产业联合会与美国国家航空航天局共同赞助了一项研究。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐