1. Introduction The discovery of possible high T;super-conductivity at 35K in La-Ba-Cu-O systemsparked an intense study on the new classof cupric oxides by a few laboratoriesincluding the joint research group of highT...1. Introduction The discovery of possible high T;super-conductivity at 35K in La-Ba-Cu-O systemsparked an intense study on the new classof cupric oxides by a few laboratoriesincluding the joint research group of highT;superconductivity in the Institute ofPhysics, Academia Sinica. A few monthslater we not only confirmed the展开更多
Recent activities on cavitation research in the Institute of High Speed Mechanics,Tohoku University,Japan are reviewed.Firstly,our recent research project on cavitation occurrence in various liquids other than water i...Recent activities on cavitation research in the Institute of High Speed Mechanics,Tohoku University,Japan are reviewed.Firstly,our recent research project on cavitation occurrence in various liquids other than water is explained in relation to the thermodynamic and gas content effects.Secondly,study on cavitation damage is introduced.In this field,the mechanism of a single bubble collapse near solid wall and the related pit formation in soft test materials have been investigated.Also,the effects of fluid properties on the cavitation damage are clarified.Finally,a special study on shock wave propagating through gas- liquid two-phase magnetic fluid is explained to extend further developments of cavitation research.展开更多
In this paper we discuss the reasons for our work towards establishing a new collaboration between Jefferson Lab （JLab） and the Institute of High Energy Physics （IHEP） in Beijing. We seek to combine experimentalis...In this paper we discuss the reasons for our work towards establishing a new collaboration between Jefferson Lab （JLab） and the Institute of High Energy Physics （IHEP） in Beijing. We seek to combine experimentalists and theorists into a dedicated group focused on better understanding the current and future data from JLab and from the Beijing Electron Positron Collider （BEPC）. Recent JLab results on the extraction of single- and double-polarization observables in both the lπ- and 2π-channel show their high sensitivity to small production amplitudes and therefore their importance for the extraction of resonance parameters. The Beijing Electron Spectrometer （BES） at the BEPC has collected high statistics data on J/ψ production. Its decay into baryon-antibaryon channels offers a unique and complementary way of probing nucleon resonances. The CEBAF Large Acceptance Spectrometer, CLAS, has access to N＊ form factors at high Q2 which is advantageous for the study of dynamical properties of nucleon resonances, while the low-background BES results will be able to provide guidance for the search for less-dominant excited states at JLab. Moreover, with the recently approved experimental proposal Nucleon Resonance Studies with CLAS12 and the high-quality data streaming from BES-Ⅲand CLAS, the time has come for forging a new Trans-Pacific collaboration of theorists and experimentalists on NSTAR physics.展开更多
文摘1. Introduction The discovery of possible high T;super-conductivity at 35K in La-Ba-Cu-O systemsparked an intense study on the new classof cupric oxides by a few laboratoriesincluding the joint research group of highT;superconductivity in the Institute ofPhysics, Academia Sinica. A few monthslater we not only confirmed the
文摘Recent activities on cavitation research in the Institute of High Speed Mechanics,Tohoku University,Japan are reviewed.Firstly,our recent research project on cavitation occurrence in various liquids other than water is explained in relation to the thermodynamic and gas content effects.Secondly,study on cavitation damage is introduced.In this field,the mechanism of a single bubble collapse near solid wall and the related pit formation in soft test materials have been investigated.Also,the effects of fluid properties on the cavitation damage are clarified.Finally,a special study on shock wave propagating through gas- liquid two-phase magnetic fluid is explained to extend further developments of cavitation research.
文摘In this paper we discuss the reasons for our work towards establishing a new collaboration between Jefferson Lab （JLab） and the Institute of High Energy Physics （IHEP） in Beijing. We seek to combine experimentalists and theorists into a dedicated group focused on better understanding the current and future data from JLab and from the Beijing Electron Positron Collider （BEPC）. Recent JLab results on the extraction of single- and double-polarization observables in both the lπ- and 2π-channel show their high sensitivity to small production amplitudes and therefore their importance for the extraction of resonance parameters. The Beijing Electron Spectrometer （BES） at the BEPC has collected high statistics data on J/ψ production. Its decay into baryon-antibaryon channels offers a unique and complementary way of probing nucleon resonances. The CEBAF Large Acceptance Spectrometer, CLAS, has access to N＊ form factors at high Q2 which is advantageous for the study of dynamical properties of nucleon resonances, while the low-background BES results will be able to provide guidance for the search for less-dominant excited states at JLab. Moreover, with the recently approved experimental proposal Nucleon Resonance Studies with CLAS12 and the high-quality data streaming from BES-Ⅲand CLAS, the time has come for forging a new Trans-Pacific collaboration of theorists and experimentalists on NSTAR physics.
