查询词典 separation

Aluminum Ispropoxide was hydrolyzed to prepare Al〓O〓 sol. The hydrolyzed 〓CHOH affected the sol peptization. The colloidal particle was the smallest when the peptization time was 12 hours.γ-Al〓O〓 membrane without cracks, thickness about 2μm, was prepared from 1M sol with a suitable amount of PVA solution. The mean pore size of the membrane was about 3nm. And, the H〓/N〓 separation factor was 3. 53, exhibiting good separation performance.

异丙醇铝为前驱体，水解制备Al〓O〓溶胶，水解产生的异丙醇影响溶胶的胶溶效果，并且胶溶12小时得到的胶粒最小。1M溶胶加PVA制备厚度2μm左右，无开裂γ-Al〓O〓膜，经600℃煅烧，平均孔径为3nm，H〓/N〓分离系数可达到3.53，表现了很好的分离性能。

As a new separation technology, gas membrane separation has been widely employed in petrochemistry, energy, electronics, pharmaceutical and food industries.

气体膜分离作为新兴的分离技术，已广泛应用于石油化工、能源、电子、医药、食品等领域。

Chiral separation of D -, L -phenylglycine by RP-HPLC was accomplished by adding a complex of optically active L -Phe-Cu2+ to the mobile phase. Chiral separation mechanism was further elucidated in light of unambiguously assigning the structure of the elutents from RP-HPLC by taking advantage of tandem mass spectrometry due to its unique capability of structural identification of the unknows.

以含 L -苯丙氨酸铜配位络合物的溶液作为手性流动相，采用反相高效液相色谱法拆分了非衍生苯甘氨酸对映体，使用质谱对拆分组分进行了结构鉴定，得到了拆分组分的化学结构，用量子化学计算预测了该结构的最稳定构象。

Refined snake venom is first produced with snake venom of Pallas pit viper through twice chromatographic separation, saturated ammonium sulfate precipitation, centrifugal separation, dialysis and freezing drying and then produced into the said medicine through compounding, filteration, disinfection and packing.

一种治疗肝炎病的药物疏肝酶，是由复蛇蛇毒经两次层析分离，饱和硫酸铵沉淀，离心、透析、冷冻干燥而得精制蛇毒，然后再经配制、过滤、除菌灌注、封口而成。

A high-performance liquid chromatographic method for the simultaneous separation and determination of aryltetralin lignans and flavonoids in Podophyllum emodi Wall.var. chinesis Sprague was developed. The separation was performed on a Kromasil-C 18 column by gradient elution with phosphate buffer-methanol (0-13min, 50∶50, 33min, 30∶70) as mobile phase at a flow-rate of 0.8 ml/min, with detection 270nm.

首次建立了桃儿七中苦鬼臼葡萄糖甙、4-去甲基鬼臼脂素、表鬼臼脂素、苦鬼臼脂素、苦鬼臼酯酮、鬼臼脂素、鬼臼酯酮、去氧鬼臼脂素、去氢鬼臼脂素等9种木脂素以及山柰酚、槲皮素等2种黄酮类组分同时分离测定的高效液相方法。

In view of separation, the separation of porphyrin complexes with different central metal ions is more difficult.

从分离的角度看，不同金属离子与同一个卟啉配体所形成的配合物之间的分离相对要难一些。

Is better than that of using Na〓S merely and the profit per year is over 6, 000, 000 yuan. External potential-control flotation column and The Cu-Mo bulk concentrates flotation separation. With appropriate combination of the principle of sulphide flotation pulp electrochemistry and the technology of flotation column show the advantage over flotation equipment, External potential-control flotation column was studied successfully, laboratory potential-control flotation column was designed and its structural principle, the relationship of electrode structure and the activity of separation, the electrochemistry principle of potential-control flotation column also was investigated.

用具有较强电化学还原能力的无机物（如硫化钠、连二亚硫酸盐等）与能和硫化铜矿物表面发生选择性吸附的小分子有机化合物组合使用、成功地实现了混合精矿体系中黄铜矿的抑制、解决了德兴铜矿铜钼混合精矿浮选分离时、硫化钠用量大、生产成本高，生产指标不稳定的技术难题，研究结果表明，用组合抑制剂3.8kg/t可取代生产中硫化钠45kg/t的高用量，并获得优于单用硫化钠的好指标，年直接经济效益600万元以上。

With the analysis of the RELAX in the correlation domain, the theory of the signals resolution that based on the signals separation was established, and the effect of the signal separation with the projection of the iterative matrix operators was also proved.

在矩阵算子实现信号分离的前提下，建立了关于信号方位参数的多维优化问题－即所谓的多维松弛算法。

The result indicated that only a partial separation of atropine racemate could be obtained with ADMPC-CSP, whereas a baseline separation of atropine racemate could be achieved with CDMPC-CSP.

在正己烷中加入了不同的醇类改性剂对阿托品进行拆分，并优化了流动相中醇类改性剂的比例。结果发现，阿托品在CDMPC固定相上可以得到基线拆分，而在ADMPC固定相上只能得到部分拆分。

The effects of separation temperature, time and reflux ratio on separation efficiency were investigated.

考察了分离温度、时间和回流比等因素对分离效果的影响。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。