搜索结果: 1-8 共查到“工学 alfalfa”相关记录8条 . 查询时间(0.265 秒)
苜蓿草粉对金属材料的磨料磨损试验（Experiment of Metal Materials Abrasive Wear for Alfalfa Powder）
苜蓿草粉 金属材料 磨料磨损
2009/11/24
选用与环模制粒工况相似的磨料磨损试验机，以苜蓿草粉为磨料对试样进行磨料磨损试验。通过磨后表面的硬度和化学成分测定、微观结构和表面形貌观察，考察了苜蓿草粉对4种金属材料的磨料磨损。结果表明，4种材料的体积磨损量由小到大依次为3Cr13、9SiCr、45号钢、HT200，试样的磨损表面发生了物理和化学变化。“软磨料磨损”中伴有 “硬磨料磨损”的特征，显微切削和应变疲劳剥落为其主要磨损形式。
苜蓿转筒干燥时茎叶分离出口气流场模拟与优化（Simulation and Optimization of the Wind Field of the Separation Exit of Alfalfa Rotary Drum Dryer）
苜蓿 悬浮速度 风场模拟 计算流体力学
2009/11/3
针对转筒干燥苜蓿的茎叶垂直分离原理，基于90℃左右干燥气流的风速条件，应用CFD技术对三回程苜蓿干燥分离转筒出口附近的气流场进行了模拟和优化设计。通过速度云图分析，获得了在总体结构不变的情况下中筒末端和外筒末端之间相对适宜的尺寸。通过气流场速度矢量分析，提出了改进茎叶分离效率的方案。
Formation Mechanism of Grassy Odor Substance in Alfalfa Seedlings
alfalfa n-hexanal grassy odor
2009/6/17
Sensory test of the grassy odor with 2, 3, 5 and 7-day-old seedlings of alfalfa showed that 2-day-old seedlings are the grassiest. To identify the substance responsible for the grassy odor, the compos...
Hot-Water Treatments for Disinfecting Alfalfa Seeds Inoculated with Escherichia coli ATCC 25922
disinfection alfalfa seeds sprouting
2009/6/17
Several pasteurization procedures for alfalfa (Medicago sativa) seeds were investigated to completely disinfect inoculated Escherichia coli (Migula) Castellani and Chalmers ATCC(25922). Hot-water trea...
Triacylglycerol Lipase Participates in the Formation of n-Hexanal in Alfalfa Seedlings
alfalfa n-hexanal lipase grassy odor
2009/6/17
The participation of lipase in the formation of n-hexanal by homogenization of alfalfa seedlings was investigated. n-Hexanal was increased by the addition of trilinolein, dilinolein or monolinolein to...
苜蓿草在压缩过程中的径向力对压缩功耗、压缩后的产品质量以及压缩设备的研制等均有很大影响。为得出苜蓿草在压缩过程中径向力的变化规律，采用电测技术，选择初始密度和压缩速度为试验因素，对苜蓿草径向力进行测试研究，获得了压缩密度、初始密度和压缩速度对苜蓿草径向压缩力的影响规律，并给出了轴向压缩力与径向压缩力的线性关系曲线。结果表明，压缩密度小于50kg/m时，压缩速度和初始密度对径向压缩力影响较小；压缩密...
Synthesis of Microbial Protein in Ruminally Cannulated Cows Fed Alfalfa Silage, Alfalfa Hay, or Corn Silage
ruminal synthesis of microbial proteins nitrogen-15 alfalfa forage
2008/7/29
Six ruminally cannulated cows were used in an experiment with a 3 x 3 Latin square design. Three all forage diets—alfalfa silage, alfalfa hay, or corn silage plus 2.2% urea (DM basis)—were fed for ad ...
Use of Nitrogen from Ammoniated Alfalfa Hay, Urea, Soybean Meal, and Animal Protein Meal by Lactating Cows
ammoniation alfalfa ruminally degradable protein
2008/6/24
Midbloom alfalfa hay was baled (16% moisture) and treated with approximately 2% anhydrous NH3 (percentage of DM). Concentrations (percentage of DM) of total N (4.7% vs. 3.4%), NPN (1.3% vs. 0.4%), sol...