查询词典 purification

Objective:To investigate the purification process of total flavones and total tannins from Apocynum venetum leaves with macroreticular resin.

中文摘要：目的：研究大孔吸附树脂同步分离纯化罗布麻叶总黄酮和总鞣质的工艺条件及参数。

The treatment enclosures with E.crassipes and S.natans had the better effect on sewage purification and nutrients removal.It may relate to their ability of absorption and assi milationthe nitrogen and phosphorus fromsewages as well as the action of microorganismaround plant root.

凤眼莲和槐叶萍处理围区的水质净化效果较好，这与植物自身吸收同化污染水体中氮素、磷素的能力大小及植物根系微生物的作用都有关。

The following contents have been studied comprehensively: the method of assimilable organic carbon measure; the biological stability of raw water in Yangtze Delta; the removal characteristics of AOC by purification technology and pr...

在熟练掌握和运用AOC生物修订法的基础上，对其进行了简化和改进，以100mL具塞玻璃锥形瓶代替45mL硅硼酸盐管形瓶，将测试水样量由40mL增加到100mL，将9个平行水样减少为6个，降低了AOC测定工作强度，有利于推广应用。

Using awater purification cartridge beyond its expiration date or failing to clean the system on aregular basis can lead to water with higher resistivity as well as microbial contamination.

设备所用的纯化柱填料过期或没有按照程序来清理纯化柱，可能会导致水的电阻率升高或被细菌污染。

In this thesis, the biological characteristic of Dunaliella salina, which included the axenic purification, physiology characteristics and genetics characteristics, was studied systematically.

本文系统研究了杜氏盐藻的生物学特性，主要内容包括杜氏盐藻无菌纯化、杜氏盐藻生理学特性、杜氏盐藻遗传学特性等三部分。

White Spot Bacilliform Virus; Microarray; Expression and purification of protein; Immune electron microscopy; Protein-DNA binding interaction

对虾白斑杆状病毒； Microarray；蛋白表达与纯化；免疫电镜技术；蛋白质-DNA结合

The extraction and purification of Acetobacter Z127 ADH. Four methods were employed to isolate ADH from Acetobacter Z127 just to find bacteriolytic solution could break cell efficiently and maintain ADH activity simultaneously and thus it was suitable for the extraction of Acetobacter Z127 ADH.

通过实验对模型的检验，表明实验建立的细胞生长动力学模型和乙醇消耗动力学模型可以反映Acetobacter Z127的生长、消耗反应规律。3Acetobacter Z127中ADH的提取纯化。

The molecular structures of APSP were identified. BAW was selected as the eluent of GC through TLC. After separation and purification, two anthocyanins were obtained.

本文对APSP组分进行了研究，首先通过薄层层析实验选定以BAW体系为柱层析洗脱剂，然后对APSP进行分离纯化，得到两种相对含量较高的组分Ⅰ和Ⅱ，并对组分Ⅰ和Ⅱ进行了一系列结构鉴定实验。

The absorrption of benzoid compound by activated carbon fiber was studied. In theexperiment, the influence of the rate of filtration to the purification effeciency was researched. On the basis of summarizing the principle, advantage and recent research on watertreatment by the activated carbon fiber, adsorption performance of three activated carbons(fibrous, granulose, and powdery) were studied.

选用粘胶基活性碳纤维吸附废气中苯系物，考察了吸附过程中滤速对净化效率的影响，结果表明：滤速为0.20m／s以下时，活性碳纤维对废气中苯系物的净化效率达到90％以上；滤速为0.22m／s时，其净化效率有所下降，净化效率由大到小依次为邻二甲苯、甲苯、苯。

C. In addition, they introduced a fluorosubstituted benzylic ester (CH 2 C 6 H 4 CH 2 CH 2 C 8 F 17 ) as a protecting group in solution-phase peptide synthesis to facilitate the purification of intermediates by fluorous-solid-phase extraction.

丙此外，他们推出了fluorosubstituted苄酯(丙6小时2楚楚242丙的CH8六17)为保护群液相肽合成纯化中间体的便利氟-固相萃取。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。