Electron Paramagnetic Resonance(EPR)is the only spectral method for direct detection of paramagnetic substances.EPR technology can be used for the qualitative and quantitative analysis of free radicals and transition ...Electron Paramagnetic Resonance(EPR)is the only spectral method for direct detection of paramagnetic substances.EPR technology can be used for the qualitative and quantitative analysis of free radicals and transition metals in solid,liquid,gas,cell and living samples.It is widely used in chemistry,material science,life science,quantum physics and other researches.This report discusses the basic principle,instrument structure,common problem solving,daily maintenance,and management model of the electron paramagnetic resonance spectrometer(German Bruker A-200)in the State Key Laboratory of Natural and Biomimetic Drugs of Peking University Health Science Center,so that the instrument can be fully used for various scientific researches.展开更多
Once in the hands of end users, such durable equipment as spacecraft, aircraft, ships,automobiles, computers, etc. are in a state of debugging, working or storage. In either state, availability, reliability and super-...Once in the hands of end users, such durable equipment as spacecraft, aircraft, ships,automobiles, computers, etc. are in a state of debugging, working or storage. In either state, availability, reliability and super-efficiency are the ultimate goals, which have been achieved through constant monitoring as well as regular, preventive, routine and corrective maintenance. Although some advanced instruments can visualize certain invisible malfunctioning phenomena into visible ones, deeply hidden troubles cannot be found unless monitoring and testing data are addressed using tools that process the data statistically, analytically and mathematically. Some state-of-theart trouble-shooting and life-predicting techniques and approaches are introduced in this paper.展开更多
文摘Electron Paramagnetic Resonance(EPR)is the only spectral method for direct detection of paramagnetic substances.EPR technology can be used for the qualitative and quantitative analysis of free radicals and transition metals in solid,liquid,gas,cell and living samples.It is widely used in chemistry,material science,life science,quantum physics and other researches.This report discusses the basic principle,instrument structure,common problem solving,daily maintenance,and management model of the electron paramagnetic resonance spectrometer(German Bruker A-200)in the State Key Laboratory of Natural and Biomimetic Drugs of Peking University Health Science Center,so that the instrument can be fully used for various scientific researches.
基金co-supported by the National Natural Science Fundation for Distinguished Young Scholar of China(No.61025014)the National Natural Science Foundation of China(Nos.61174030,61104223,61374126,61374120,61004069 and 61370031)
文摘Once in the hands of end users, such durable equipment as spacecraft, aircraft, ships,automobiles, computers, etc. are in a state of debugging, working or storage. In either state, availability, reliability and super-efficiency are the ultimate goals, which have been achieved through constant monitoring as well as regular, preventive, routine and corrective maintenance. Although some advanced instruments can visualize certain invisible malfunctioning phenomena into visible ones, deeply hidden troubles cannot be found unless monitoring and testing data are addressed using tools that process the data statistically, analytically and mathematically. Some state-of-theart trouble-shooting and life-predicting techniques and approaches are introduced in this paper.
