摘要
目的:对山楂酒中的化学成分进行分离和鉴定。方法:采用半制备高效液相色谱法进行分离、纯化,采用波谱分析(1H-NMR、13CNMR及DEPT)技术进行结构鉴定。结果:分离鉴定了3个化合物,分别为3,4,6-三羟基香豆素(1)、对羟基苯乙醇(2)和咖啡酰酐(3)。结论:3种化合物均为首次从山楂酒中分离得到。
Four different composite laminates specimens of bolted joints with local reinforcement were prepared by vacuum assisted resin injection molding （VARI）. The mechanical behavior of the composite bolted joints specimens was experimental and numerical investigated. In the numerical study, the bolted of static tensile was deemed to a quasi static problem. An explicit dynamic solver and ABAQUS user subroutine VUMAT were implemented to simulate the 3D progressive failure process of composite bolted joints. Interface delamination was simulationed using a cohesive element layer between laminates and reinforcement layer. The numerical results are in good correlation with the experimental results, which demonstrate that the simulation is feasible. The research results show that bolted joints with different local reinforcement methods affect connection properties of laminates obviously, and the connection properties of laminates are significantly improved by [0/90/0/90]S internal fiber layer reinforcement.
出处
《食品科技》
CAS
北大核心
2013年第12期122-125,共4页
Food Science and Technology
基金
北京市科学技术研究院青年骨干项目(2012-019)
国家科技支撑计划项目(2012BAD33B01)
北京市财政资金项目创新工程II-1(PXM2012_178102_000010)
关键词
山楂酒
化学成分
核磁共振波谱法
internal friction of phase transformation
chemical composition
Ni-Al-based alloys
