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Journal Articles

Magnetic safety factor profile before and after sawtooth crashes investigated with toroidicity and ellipticity induced Alfv$'e$n eigenmodes

Kramer, G. J.; Cheng, C. Z.*; Kusama, Yoshinori; Nazikian, R. M.*; Takeji, Satoru; Tobita, Kenji

Nuclear Fusion, 41(9), p.1135 - 1151, 2001/09

 Times Cited Count:35 Percentile:72.22(Physics, Fluids & Plasmas)

no abstracts in English

Journal Articles

Destabilization of ellipticity-induced Alfven eigenmodes during ICRF heating and stabilization by negative-ion-based neutral beam injection in JT-60U

Kusama, Yoshinori; Fu, G. Y.*; Kramer, G. J.*; Saigusa, Mikio*; Oikawa, Toshihiro; Ozeki, Takahisa; Moriyama, Shinichi; Tchernychev, F. V.*; Nemoto, Masahiro; Kondoh, Takashi; et al.

Plasma Physics and Controlled Fusion, 41(9), p.1167 - 1177, 1999/00

 Times Cited Count:5 Percentile:20.66(Physics, Fluids & Plasmas)

no abstracts in English

Journal Articles

Noncircular triangularity and ellipticity-induced Alfven eigenmodes observed in JT-60U

Kramer, G. J.*; Saigusa, Mikio; Ozeki, Takahisa; Kusama, Yoshinori; Kimura, Haruyuki; Oikawa, Toshihiro; G.Y.Fu*; C.Z.Cheng*; Tobita, Kenji

Physical Review Letters, 80(12), p.2594 - 2597, 1998/03

 Times Cited Count:42 Percentile:83.25(Physics, Multidisciplinary)

no abstracts in English

Journal Articles

Measurement of concentrations of NaCl aerosol released from a fume hood

; ; ;

Hoken Butsuri, 19(1), p.321 - 327, 1984/00

no abstracts in English

Oral presentation

The Fe(III)-dependent anaerobic methane-oxidizing activity in a deep underground borehole demonstrated by in-situ pressure groundwater incubation

Nishimura, Hiroki*; Kozuka, Mariko*; Fukuda, Akari*; Ishimura, Toyoho*; Amano, Yuki; Beppu, Hikari*; Miyakawa, Kazuya; Suzuki, Yohei*

no journal, , 

The family Methanoperedenaceae archaea mediate anaerobic oxidation of methane (AOM). We newly developed a high-pressure laboratory incubation system and investigated groundwater from 214- and 249-m deep boreholes at Horonobe Underground Research Laboratory, Japan, where the high and low abundances of Methanoperedenaceae archaea have been revealed, respectively. We incubated the samples amended with or without amorphous Fe(III) and $$^{13}$$C-labelled methane at an in-situ pressure of 1.6 MPa. After three to seven-day incubation, AOM activities were not detected from the 249-m sample but from the 214-m sample. The AOM rates were 93.7$$pm$$40.6 and 27.7$$pm$$37.5 nM/day with and without Fe(III) amendment. Suspended particulates were not visible in the 249-m sample on the filter, while they were abundant and contained amorphous Fe(III) and Fe(III)-bearing phyllosilicates in the 214-m sample. This supports the in-situ activity of Fe(III)-dependent AOM in the deep subsurface borehole.

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