"R. Yukawa,S. Yamamoto,K. Ozawa,M. Emori,M. Ogawa,Sh. Yamamoto,K. Fujikawa,R. Hobara,S. Kitagawa,Hiroshi Daimon,H. Sakama,I. Matsuda","Electron-hole recombination on ZnO(0001) single-crystal surface studied by time-resolved soft X-ray photoelectron spectroscopy",,"Applied Physics Letters","AIP Publishing","Vol. 105",,"p. 151602",2014,Oct. "R. Yukawa,S. Yamamoto,K. Ozawa,M. D'Angelo,Manami Ogawa,M.G. Silly,F. Sirotti,I. Matsuda","Electronic structure of the hydrogen-adsorbed SrTiO3(001) surface studied by polarization-dependent photoemission spectroscopy",,"Physical Review B","American Physical Society","Vol. 87",,"p. 115314",2013,Mar. "Akiko Makabe,Keisuke Koba,Chikage Yoshimizu,I.chiro Tayasu,N. O. Ogawa,Naohiko Ohkouchi,Sakae Toyoda,Naohiro Yoshida,Toshi Nagata","Fate of atmospheric nitrate and nitrogen biogeochemical processes in Lake Biwa elucidated by multiple oxygen isotopes","2012 ASLO Aquatic Sciences Meeting",,,,,,2012,July