用紫外可见分光光度法测定共轭亚油酸的含量     

张亚刚  樊莉  马莉  文彬  吾满江·艾力 《中国科学院大学学报》2002,19(4):436-442

采用UV9100型紫外可见分光光度计,测定了共轭亚油酸、共轭亚油酸甲酯、共轭亚油酸三甘酯在不同浓度时在 200～ 300nm的吸光度,绘制出样品在不同浓度时的吸光度曲线,找出适宜的浓度范围;用MicrocalSoftwareOriginVersion 4.0做回归分析,由线性回归给出样品浓度和吸光度的线性关系;利用PEAutosystemXL TurboMass测得样品中共轭亚油酸乙酯的准确浓度,结合回归系数给出了测定样品中共轭亚油酸含量的经验公式.  相似文献   

γ辐射对α-亚麻酸氧化反应的影响     

武俊杰  吾满江&#  艾力  刘力  马莉 《中国科学院大学学报》2005,22(6):695-700

对α-亚麻酸及其乙酯分别在氧气气氛和氮气气氛下进行一定剂量的γ辐射,每隔2d测定其过氧化值.研究结果表明,辐射剂量和时间对亚麻酸的过氧化值有较大影响;同时探讨了亚麻酸在γ辐射下过氧化值与反应机制之间的内在联系。  相似文献   

γ-辐射对α-亚麻酸氧化反应的影响     

武俊杰  吾满江·艾力  刘力  马莉 《中国科学院研究生院学报》2005,1(6):695-700

对α-亚麻酸及其乙酯分别在氧气气氛和氮气气氛下进行一定剂量的γ-辐射，每隔两天测定其过氧化值。研究结果表明：辐射剂量和时间对亚麻酸的过氧化值有较大影响，本文同时探讨了亚麻酸在γ-辐射下过氧化值与反应机制之间的内在联系。  相似文献   

Educational Robotics: An Insight into Systems Engineering     

IGOR M. VERNER  SHLOMO WAKS  ELI KOLBERG 《European Journal of Engineering Education》1999,24(2):201-212

The need for engineering educators to influence reform of science-technology education in schools and, especially, contribute in stating technology as a new school subject is argued. The approaches to applying systems theory in education are outlined. An introductory ‘Robotics and Real Time Control Systems’ course has been developed as a possible approach to systems education and insight into engineering. The course concept and the master plan, based on the ‘threaded’ metacurricular approach, are proposed. The stages of design process for the course curriculum are considered. The course has been implemented in a number of high schools in Israel. An example of one project performed by a student team is presented.  相似文献