On the base of six single factor trials which are linked to ultrasonic power, extraction time, extraction temperature, material granularity, solvent to material and extraction times,2-level fractional factorial design was applied to study the factors of ultrasonic extracting β-carotene and screen out the key factors, extracting time (p=0.
为进一步优化超声波提取胡萝卜中β-胡萝卜素的工艺条件,在超声功率、超声时间、提取温度、物料粒度、料液比及提取次数6个单因素试验结果的基础上,采用二水平部分因子析因设计(2-level fractional factorial design)法,筛选出了影响β-胡萝卜素提取的主要因素为提取时间(p=0。
eliminary research on the relation between oil-gas exploration effectiveness and exploration level.;
油气勘探成效与勘探水平关系初步研究
Analysis and Comprehensive Prevention and Cure the Pouring Water of Two Level in Mining Face;
二水平回采工作面涌水原因分析与综合防治
Talking about the reform of conveying system in the second level drift of Xinxing Coal Mine;
浅谈新兴矿五采区二水平运煤系统的改造
Experimental Study on Single-Phase Liquid Friction Factor in Rolling Horizontal Pipe;
摇摆状态下水平管中单相水的摩擦阻力实验研究
To transform GZY - 50 type rig into a horizontal rig, on the basis of its primary organs, especially the hydraulicpressure system, that meets the request of the horizontal rig.
在保持GZY -5 0型钻机的机构的基础上 ,将它改造成水平钻机 ,特别是针对它的液压系统进行改造 ,使之液压系统的功能满足水平钻机的要求。
Objective To investigate the horizontal transmission of viruse after inoculation with live attenuated hepatitis A vaccine.
目的 探讨甲型肝炎 (甲肝 )减毒活疫苗接种后的病毒水平传播。
This paper has proposed a method of intergration which can promote the comprehensive designing standard in course design.
本文提出一体化模式的教改方案,有助于提高课程设计综合水平。
Studies on Dietary Protein and Energy Levels and Its Effect on Productive Performance in Landrace-Yorkshire Hybrid Sows;
能量与蛋白质水平对长大二元杂母猪繁殖性能的影响研究
SOLO model is a theory structure to classify the observed learning outcome with main features of models of thinking and levels of complexity.
SOLO模型是对观察到的学习结果进行分类的理论框架,包括思维方式和复杂性水平两个关键特征。