The dispersion, double electrical layers theory, drying methods, surface modification and characterization methods in preparing process of nanometer particles were introduced in this article.
介绍了纳米粒子制备过程中的分散、表面双电层理论、干燥方法、表面修饰与表征方法。
2
Methods: HPMC and stearic acid were used to prepare melatonin controlled-release bilayer tablets by application of solid dispersion method and double compression technology.
方法：以hpmc、硬脂酸为骨架材料，采用固体分散技术和双层压片工艺，制备褪黑素双层控释片。
3
A double focusing, non spatial dispersion magnet design has been suggested to substitute the achromatic principle for improving the beam characteristics on target of the medical accelerator.