摘要
目的:澄清休止角概念上的模糊,分析固定漏斗法测定引起休止角的系统偏差的原因,提出新的休止角的测定方法。方法:总结了固定漏斗法对休止角测定的影响,分析了固定漏斗法因操作条件改变而引起休止角测定数值系统偏差的原因。对休止角的定义作了一定程度的修正。在建立模型基础上对实验数据进行回归分析,在分析的基础上,提出了新的休止角测定方法。结果:方差分析结果显示固定漏斗法有统计学偏差,回归分析的相关性极显著。结论:固定漏斗法确实存在因测定条件的改变而引起的系统偏差,偏差可利用数学处理得到修正。实验数据分析表明新测定方法有一定的优势。
Aim： To discuss the essentials in the definition of angle of repose so as to obtain a more accurate measurement. Methods： In this presentation, the influences of the fixed-funnel method on angle of repose and the reasons of system deviation of experimental data when there were changes to measuring conditions were analyzed, the modification to the definition was derived. Linear regression of the original data was carried out based on a mathematical modeling, and the modified method in the measurement of angle of repose was suggested. Resuits： ANOVA showed the stitistical deviation, and there existed a significant correlation of regression analysis. Conclusion： There could exist systemic deviations in different measurement conditions. Mathematical analysis proved the hypothesis and modification to the method is feasible.
出处
《中国药科大学学报》
CAS
CSCD
北大核心
2008年第4期317-320,共4页
Journal of China Pharmaceutical University
关键词
休止角
固定漏斗法
方法修正
angle of repose
fixed-funnel method
method amendation
