查询词典 solubility

The microbial production of AD had the advantage of high purity, low cost and short cycle time, but it was restricted by the conversion ability of microbes and low solubility of phytosterol.

微生物法制取AD具有产品纯度高、生产成本低、周期短等特点，但也存在菌种转化能力普遍不高，底物甾醇在水中溶解度低等缺点。

And the chemistry experiment, it is in a specific set of devices, through the gas solubility in liquid very short period of time to generate sufficient pressure difference, then open the piston, the atmospheric pressure to the liquid pressure inside the beaker into the flask, in pipefish mouth formed catheter fountain.

而化学实验，则是在一组特定的装置中，通过气体在液体中溶解度很大，在短时间内产生足够的压强差，则打开活塞后，大气压将烧杯内的液体压入烧瓶中，在尖嘴导管口形成喷泉。

Pitier model ; salt-water system ; prediction of solubility

Pitzer ；模型；水盐体系；溶解度计算

Pitier model, salt-water system, prediction of solubility

由于有工业价值的盐湖卤水多处于气候干旱地区，卤水加工如采用盐田大然蒸发，逐步分离各种盐类，在经济上将会更合理，而盐田日晒工艺的基础也是体系中各盐类的溶解度关系。

objective to observe the antitumor activities of different solution extracts of plumbago zeylanica l.in vitro.method mtt method was used to detect the inhibitory effects on four kinds of cancer cells.results chloroform extracts had significant inhibitory effects on the breast cancer cell(bre-04),the nerve cancer cell(n-04) and the lung cancer cell(lu-04),ic50 were 0.2699mg/ml and 0.2634mg/ml,0.4961mg/ml respectively.ic50 of chloroform extract on the hepg2 was 0.9379mg/ml.ic50 of petroleum ether extracts on bre-04,n-04,lu-04 and hepg2 was 0.5902mg/ml,0.5725mg/ml,0.7938mg/ml,0.6374mg/ml;ethyl acetate extracts had fairly inhibitory effects on the lu-04,ic50 was 0.7343mg/ml;n-butanol extracts and water-solubility extracts had notsignificant inhibitory effects on the four kinds of cancer cells.conclusion the antineoplastic effective parts of plumbago zeylanica l.were chloroform and petroleum ether extracts.

目的 探讨白花丹体外抗肿瘤作用的活性部位。方法 mtt染色法对白花丹五种溶剂提取物体外抗肿瘤活性进行了初步的研究。结果氯仿提取物对乳腺癌细胞（bre-04）、神经癌细胞（n-04）、肺癌细胞（lu-04）有较好的抑制生长作用，ic50分别为0.269 9 mg/ml、0.263 4 mg/ml、0.496 1 mg/ml，对肝癌细胞hepg2抑制作用差， ic50为0.937 9 mg/ml；白花丹石油醚提取部位对乳腺癌细胞（bre-04）、神经癌细胞（n-04）、肺癌细胞（lu-04）、肝癌细胞hepg2的ic50分别为0.590 2 mg/ml、0.572 5 mg/ml、0.793 8 mg/ml、0.637 4 mg/ml；乙酸乙酯提取物对肺癌细胞（lu-04）有一定的抑制作用，ic50为0.734 3 mg/ml；水溶性提取物以及正丁醇提取物无明显抑制肿瘤作用。结论白花丹氯仿提取部位、石油醚提取部位体外抗肿瘤作用较好，值得对其提取部位进一步分离纯化并研究其抗肿瘤作用机制。

Preparation method and chemical composition of water-solubility polysaccharide in corn silk were studied in this paper.

对玉米须中水溶性多糖的制备方法和化学组成进行了研究。

According to the analysis on the solubility data of the K2CO3-K2CrO4-H2O system, evaporating crystallization is a key step to separate potassium chromate from potassium carbonate solution.

据K2CrO4-K2CO3-H2O体系溶解度分析，蒸发结晶是该分离过程控制的关键，对此进行了详细的相图分析。

China is a country which is short of solubility potassium ore resource.

我国是一个缺乏可溶性钾矿资源的国家。

Product has a good uniformity, mobility and solubility.

产品具有良好的均匀度、流动性和溶解性。

Has a good product uniformity, mobility and solubility, high product purity, quality

产品具有良好的均匀度、流动性和溶解性，产品纯度高，质量好。

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