两亲性无规共聚物MAA-SMA-PEGMA的表面活性研究

利用功能性单体甲基丙烯酸(MAA)、甲基丙烯酸十八烷基酯(SMA)和聚乙二醇甲基丙烯酸酯(PEG-MA)通过自由基共聚,合成了两亲性共聚物Poly(MAA-SMA-PEGMA)。研究了其结构、临界胶束浓度(CMC)和表面张力,探讨了由共聚物与低分子表面活性剂组成的复配体系。结果表明高低分子表面活性剂复配体系在质量比为5∶5后,体系的表面张力和临界胶束浓度都有所降低,接近于低分子表面活性剂。     

A unified approach to reliability and edge fault tolerance of cube-based interconnection networks under three hypotheses

The Journal of Supercomputing - The topological structures of the interconnection networks of some parallel and distributed systems are designed as n-dimensional hypercube $$Q_n$$ or n-dimensional...     

包含酰胺类萃取剂的微胶囊萃取铀酰离子

用制备的包覆酰胺类萃取剂的微胶囊研究了其在水溶液中对ＵＯ＾２＋２的萃取条件。并对反萃取及微胶囊的重复使用作了初步探讨。结果表明,微胶囊包覆萃取剂后,隔开了有机相和水相,可避免乳化及三相的产生。     

三元不可压粘性流数值计算的尝试

为了能在中型机上进行三元粘性流数值计算,本文用省内存,计算速度快的跳点法进行了三元粘性流的数值计算试验。计算表明这种差分格式用在三元粘性流计算上是可行的。     

Nicotine Aerosol Generation from Thermally Reversible Zinc Halide Complexes Using the Staccato® System

Application of the Staccato system to liquid drugs presents unique technological challenges. Liquids, such as nicotine, do not form physically stable films on vaporization substrates. We identified two thermally reversible zinc halides (ZnCl₂ and ZnBr₂) that complex with nicotine in a 1:2 mol ratio (zinc halide: nicotine) that can be coated as a solid film. Feasibility studies indicated that the chloride complex liberates a higher fraction of nicotine upon heating whereas the nicotine aerosol purity for both complexes was approximately 99%. Using a multidose Staccato device previously used in a Phase I clinical trial, we demonstrated that highly pure nicotine aerosol can be reliably generated from the chloride complex with the following qualities: aerosol purity approximately 99%, single emitted dose approximately 117 μg, particle fraction approximately 57%, and mean particle size approximately 0.8 μm. These results were supported by thermogravimetric analysis and differential scanning calorimetry.     

有机萃取—火焰原子吸收法测定岩矿中金的探讨

在现有的有机萃取—原子吸收法测定岩矿中金的基础上,以乙酸丁酯、甲基异丁基甲酮(MIBK)为萃取剂进行比较,考察了两者对金的萃取性能.实验研究了KBr和Fe3+对有机萃取—原子吸收法测定金的影响,并对其他共存离子的干扰情况进行了探讨,优化了实验条件.     

用微胶囊萃取铀

用微胶囊萃取铀倪沛红张明祖陈漫里严年喜（苏州大学化学化工学院，苏州２１５００６）关键词微胶囊萃取铀界面缩聚平均粒径１前言铀作为核燃料之一具有重要的应用价值。有关铀的提取方法已经研究得很多，主要是采用溶剂萃取的方法。八十年代以来，有关液膜法萃取铀的研究...     

铝电解槽炉底沉淀物的生成原因及控制措施

介绍了铝电解生产过程中电解槽炉底沉淀物产生的原因及对铝电解槽生产的影响,提出合适的处理对策,对降低炉底压降、保证电解槽的稳定性、延长槽寿命、降低电耗有重要意义。