查询词典 extraction

Liquid-liquid extraction of hydrophile organic solvent is a new,green,high-efficiency separation technique,which has been applied in the field of extraction of heavy metal ions and purification of biologic active substances.

亲水有机溶剂液-液萃取分离是一种绿色高效分离新体系，由于兼有工艺简单、快速高效、环境友好等特点，受到研究人员的重视。

The review highlights the technical developments in the identification,quantification and separation of α-hydroxyacetic acid,especially solvent extraction and synergistic extraction.

文章比较了各种羟基乙酸定性及定量分析方法，综述了羟基乙酸分离方法，特别是溶剂萃取和协同萃取效应。最后，分析了羟基乙酸的开发前景。

Change of arch width after extraction and nonextraction treatment;2. Effects on arch width after extraction and nonextraction treatment;3. Intercanine and intermolar arch widths and anterior arch depths of the maxillary and mandibular arches were measured.

结论与不拔牙矫治相比，拔牙矫治不会减小尖牙间牙弓宽度和前牙段牙弓长度而影响面部美观；但拔牙和不拔牙矫治都能引起磨牙间牙弓宽度的改变，可能影响疗效的长期稳定性。

To improve the extraction of gold from electronic waste, statistical methods were used to analyze the impact of different factors affecting the extraction of Au using methyl isobutyl ketone as solvent.

以电子废料中的金为研究对象，用统计学方法对甲基异丁基甲酮萃取电子废料中金的影响因素进行了探讨和分析。

In order to investigate the effects of magnetic field on the liquid-liquid extraction,the extraction process of acetone-water-methyl isobutyl ketone system was studied under magnetic field with different magnetic induction intensities.

为探讨磁场对液-液萃取过程的影响，本研究在不同磁感应强度的磁场中，对丙酮-水-甲基异丁基酮物系的萃取过程进行了研究。

The kinetic mechanism of extraction reaction and the influence of isobutyl alcohol on the extraction rates of uranium with TOA are examined.

测定了三辛胺浓度、硫酸浓度、温度和异丁醇对萃取速率的影响。

To isolate Jasminum flavonoids, it took an investigation to the effect of various conditions in extraction. The result was with EtOH concentration 70%, temperature 75℃, extraction time 4h and the ratio of solution to liquid 1:15.The studies implemented macroporous resin to enrich Jasminum flavonoids.

在茉莉花干黄酮的提取工艺研究中，以乙醇水溶液为溶剂，考察了不同乙醇浓度浸提液、不同浸提时间，不同浸提温度和不同料液比对茉莉黄酮提取效果的影响，通过正交实验确定了茉莉黄酮的最佳提取工艺为乙醇浓度70％，温度75℃，提取时间为4h，固液比为1：15。

Measurements of protein concentration and the sodium dodecyl sulphate-polyacrylamide gel electrophoresis showed that 60%τ-butanol plus 4% DTT at a sample-weight to extraction-solution ratio of 1:8 was optimum for kafirin extraction.

蛋白浓度测定和SDS-PAGE电泳表明，DDT浓度为4%的60%叔丁醇溶液，样品质量比提取剂用量为1：8是提取高粱种子醇溶蛋白的最佳条件。

MethodsUsing single factor experiment and orthogonal design,the effect of temperature, extraction time, concentration of NAOH and ratio of solid to liquor on the extraction of Ligusticum chuanxiong Hort polysaccharide were studied.

目的研究碱法提取川芎多糖的最佳工艺条件。方法采用单因素实验和正交设计研究温度、时间、氢氧化钠溶液浓度、料液比对川芎多糖提取的影响。

Propolis ; Ethanol extraction ; CO_2 Supercritical extraction ; Bacteriostatic circle ; High lipoidemia

蜂胶；乙醇浸出提取； CO_2超临界提取；抑菌圈；高血脂

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。