分离

In the thesis, CE was combined with on-line sweeping and hollow fiber-basedliquid-phase microextraction technique. Efficient and sensitive methods were developedfor the determination of Strychnos alkaloids, carbamazepine in Chinese herbal medicinesand biological samples. The interactions of Strychnos alkaloids, fangchinoline,tetrandrine and carbamazepine with serum albumin were studied by fluorescencequenching spectra, synchronous fluorescence spectra, three-dimensional fluorescencespectra and ultra-violet spectra.

本论文将毛细管电泳分离技术与在线推扫富集技术、中空纤维液相微萃取技术相结合，建立了中草药和生物样品中的马钱子生物碱、卡马西平的高效、灵敏和选择性好的CE分离检测方法。

Solvent sublation is a new kind of technique for separation and pre-concentration. Trace metal ions in water could effectively be pre-concentrated by solvent sublation.

溶剂浮选法是近年来出现的一种新型分离富集方法，它能有效的分离富集水中的痕量金属离子。

The contents of E1 and E2 in polymyxin E sulfate were 67% and 32%, respectively.

在优化的实验条件下，E1和E2得到了较好的分离，分离度达到1.94。

The effect of flow rates, initial concentrations, resin bed heights, its height/ diameter ratios and temperature on breakthrough curves of sulfuric acid/2-naphthalenesulphonic acid, 2-naphthalenesulphonic acid/sulfurous acid and sulfuric acid/ 2-naphthalenesulphonic acid/sulfurous acid systems was investigated. Excellent agreement was obtained between experimental data and the suggested breakthrough data model, with which the breakthrough curves can be accurately predicted for multi-component adsorptive separation in resin bed, the experiment of adsorptive separation may be scaled up, and the plant may be designed.

考察了流速，初始浓度，床层高度，床层高径比，温度等因素对硫酸-2-萘磺酸，2-萘磺酸-亚硫酸和硫酸-2-萘磺酸-亚硫酸等混合体系穿透曲线的影响，所建立的穿透曲线模型与实验结果拟合较好，模型可较准确预测多组分吸附分离的穿透曲线，可用于指导吸附分离实验的放大以及装置的设计。

The separation mechanism of nickel and iron by sulphide precipitation and process influence conditions were investigated.

研究了硫化沉淀分离镍与铁的分离机理及工艺影响条件。

Motion law of scrap plastic film and sundries on the separating sieve was analyzed.

试验表明，分离筛的振动频率对残膜的分离率影响较大。

Achieve superposition of Blind Signal Separation graphics algorithm, the algorithm separation effect can reach 50% success.

实现叠加后的盲图形信号分离算法，目前该算法分离效果能达到50％成功。

But there is not a uniform conclusion for the selection of the fixation. All the three kinds of fixation can greatly decrease the displacement of symphysis pubis, and it is the key to recover the stability of pelvic ring.

但对于采用哪种固定方法，国内外尚无统一结论。3种材料固定在治疗耻骨联合分离中均可显著减少耻骨联合分离，是恢复骨盆环稳定性的关键。

METHORD: The chemical constituents of Schisandra micrantha were isolated by various column chromatographic methods. Their structures were assigned by spectroscopic methods including 2D NMR experiments, and their anti-HIV-1 activities and cytotoxicities were tested by microtiter syncytium formation infectivity assay.

采用多种柱层析分离进行化合物的分离和纯化，通过波谱分析鉴定化合物的结构，化合物的抗HIV-1活性通过对HIV-1感染C8166细胞致细胞病变的抑制试验得到。

AIM: To isolate bioactive secondary metabolites from the fruits of Schisandra rebriflora Rehd. et. Wils and study their effects on HIV-1 infectivity. METHODS: Inhibition of syncytia formation, HIV-1 reverse transcriptase and protease, protection of HIV-1 infected cells, level of HIV-1 p24 antigen,blockage of fusion were detected. RESULTS: A lignan compound, named rubrifloralignan A, was first isolated as a natural product with modest inhibition effects on syncytium formation and HIV- 1 replication and could protect HIV-1 infected cells with weak inhibition effects on fusion and RT, but it showed no effects on the replication of HIV-1 chronic H9 and PR. CONCLUSION: Rubrifloralignan A is an efficient anti-HIV-1 product with effect on early stage of HIV-1 replication.

目的：从红花五味子果实中寻找活性代谢产物，研究其抗HIV—1活性和作用机制方法：通过合胞体抑制、HIV-1感染细胞保护、HIV—1p24抗原测定、融合阻断、逆转录酶和蛋白酶活性分析等实验，检测分离化合物的抗HIV—1活性并探讨其作用机制一结果：红花五味子甲素能够抑制病毒诱导的合胞体形成，保护病毒感染细胞，抑制病毒在细胞内的复制对HIV-1感染细胞与正常CD4^＋细胞间的融合，逆转录酶活性有一定的抑制作用但是红花五味子甲素不抑制病毒在慢性感染细胞中的复制，也不抑制蛋白酶的活性、结论：首次从天然产物中分离得到红花五味子甲素，它对HIV—1病毒复制早期具有抑制作用

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