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Journal Articles

Multipole polaron in the devil's staircase of CeSb

Arai, Yosuke*; Kuroda, Kenta*; Nomoto, Takuya*; Tin, Z. H.*; Sakuragi, Shunsuke*; Bareille, C.*; Akebi, Shuntaro*; Kurokawa, Kifu*; Kinoshita, Yuto*; Zhang, W.-L.*; et al.

Nature Materials, 21(4), p.410 - 415, 2022/04

 Times Cited Count:4 Percentile:75.25(Chemistry, Physical)

Journal Articles

Demonstrating feasible disposable concepts for long half-life, low heat generating radioactive wastes in Japan; An overview of project TRU-2

Martin, A. J.*; Kamei, Gento; Shiotsuki, Masao; Kuroda, Shigeki*

Proceedings of International Waste Management Symposium 2007 (WM '07) (CD-ROM), 12 Pages, 2007/03

In Japan, the Federation of Electric Power Companies and The Japan Atomic Energy Agency have been collaborating with relevant organizations to promote generic R&D for the safe geological disposal of TRU waste based on the technical achievements in Japan's HLW disposal program. A result of this collaborative effort was production of a recent progress report on the R&D for TRU waste disposal in Japan (project TRU-2). This paper is an overview of TRU-2 describing the key results and some unique methodologies developed.

Journal Articles

Present and future studies for geological disposal of long half life radionuclides bearing low feverish radioactive waste

Kuroda, Shigeki*; Kamei, Gento

Genshiryoku Bakkuendo Kenkyu, 13(1), p.31 - 35, 2006/10

Long half-life low heat generating radioactive waste (TRU waste) containing higher amount of radionuclide is considered to be disposed into a geologic formation. As an optimized geologic disposal of the waste, a technical possibility of co-disposal with high-level radioactive waste is being studied. An assessment result shows that a co-disposal is possible in a Japanese representative geologic environment by setting these repositories at a certain distance apart because reciprocal influences can be avoided. Atomic Energy Commission of Japan deliberated on the result and judged that the co-disposal concept described in the 2nd progress TRU report has a technical possibility. On the other side, future studies are required from the view points of (1) more reliable assessment of co-disposal, (2) expansion of generic assessment basis, and (3) flexible correspondence for wide geologic environmental conditions. This article shows a current status of the investigations of TRU waste disposal including an overview of the disposal concept and concrete items for the future studies.

Journal Articles

Progress in Japan's TRU waste disposal technologies on the generic research and development ophase

Shiotsuki, Masao; Kuroda, Shigeki*; ; Honda, Akira; Mihara, Morihiro; Ono, Fumihiko*; Kozawa, Takashi*; Tsukamoto, Masaki*

IAEA-CN-135/59, p.229 - 232, 2005/10

None

Journal Articles

Examination of Harmonic analysis methods using semi-regular sampling data from an ADCP installed on a regular ferry; Evaluation of tidal and residual currents in the eastern mouth of the Tsugaru strait

Kuroda, Hiroshi*; Isoda, Yutaka*; Onishi, Mitsuyo*; Iwahashi, Masayuki*; Sato, Chizuru*; Nakayama, Tomoharu*; Ito, Toshimichi; Iseda, Kenichi*; Nishizawa, Keisuke*; Shima, Shigeki*; et al.

Umi No Kenkyu, 13(6), p.553 - 564, 2004/11

no abstracts in English

Journal Articles

Winter transport and tidal current in the Tsugaru Strait

Onishi, Mitsuyo*; Isoda, Yutaka*; Kuroda, Hiroshi*; Iwahashi, Masayuki*; Sato, Chizuru*; Nakayama, Tomoharu*; Ito, Toshimichi; Iseda, Kenichi*; Nishizawa, Keisuke*; Shima, Shigeki*; et al.

Hokkaido Daigaku Suisan Kagaku Kenkyu Iho, 55(2), p.105 - 119, 2004/10

Transport variations and characteristics of tidal currents in the Tsugaru Strait (TS) are investigated using the ship-mounted ADCP data obtained during October 29, 1999 - March 31, 2000. The Tsugaru Strait connects the North Pacific Ocean (NPO) and Japan/East Sea (JES), and is a main output for Tsushima Warm Current (TWC) in the JES. The strong northeastwards mean current was found in the center of the strait, and counter flows exist near the Hokkaido and Honshu coasts. The estimated mean net eastward transport is 1.8 Sv (1Sv=10$$^{6}$$m$$^{3}$$s$$^{-1}$$). In the TS, the transports of K1 and M2 across the strait are 0.72 Sv and 0.52 Sv, respectively. From the phase analysis, it is understood the K1 is progressive wave-like while the M2 is standing wave-like. We also find a significant barotropic fortnightly oscillation. The Mf tide is more energetic along the JES coast with the amplitude of 1-3cm, while the Mf tide amplitudes in the NPO are less than 1 cm. It is inferred that observed fortnightly oscillation may be generated by the difference of Mf tide amplitude between both sides of the TS.

Journal Articles

Variation of velocity and volume transport of the Tsugaru warm current in the winter of 1999-2000

Ito, Toshimichi; Togawa, Orihiko; Onishi, Mitsuyo*; Isoda, Yutaka*; Nakayama, Tomoharu*; Shima, Shigeki*; Kuroda, Hiroshi*; Iwahashi, Masayuki*; Sato, Chizuru*

Geophysical Research Letters, 30(13), p.11_1 - 11_4, 2003/10

The variation of velocity and volume transport of the Tsugaru Warm Current (TWC) is investigated based on the data of continuous and cross-sectional current monitoring in the Tsugaru Strait. During November 1999 - March 2000, the structure of the velocity transection across the strait was almost stable in which the TWC occupied the central part of the strait, while the returning flows existed in the northern and southern part of the strait, and these indicate a totally declining trend. The volume transport of the TWC varies from 2.1 to 1.1 Sv, with the mean value of 1.5 Sv, following the variation of the TWC. The temporal variation of the volume transport shows a linear correlation with that of the sea level difference between the Japan Sea and the Pacific Ocean. The contribution of the sea level difference to the volume transport is estimated to be roughly 70 %.

Journal Articles

10-, 25- and 60-day periodical current variations on the western shelf in Hidaka Bay

Kuroda, Hiroshi*; Isoda, Yutaka*; Onishi, Mitsuyo*; Iwahashi, Masayuki*; Sato, Chizuru*; Nakayama, Tomoharu*; Ito, Toshimichi; Iseda, Kenichi*; Nishizawa, Keisuke*; Shima, Shigeki*; et al.

Umi No Kenkyu, 12(2), p.195 - 214, 2003/03

Variabilities of the periodical current fluctuations on the shelf in Hidaka Bay were examined with use of ferry-mounted ADCP data obtained during 2000-2001. As the result of analysis, (1) three periodical variations around 10-, 25- and 60-day period are found, (2) the horizontal phase lag of these variations is little along the ship track, and the vertical phase lag is little at 10- and 25-day variations while several-day at 60-day variation, and (3) the 10-day variation shows coherent cross-correlation between current and wind.

Oral presentation

Geological disposal of TRU waste; Overview of the 2nd progress report

Kamei, Gento; Kuroda, Shigeki*

no journal, , 

no abstracts in English

Oral presentation

Vibronic bound states in anti-ferromagnet CeAs observed by ARPES, inelastic X-ray scattering spectroscopy, and laser Raman scattering spectroscopy

Arai, Yosuke*; Kuroda, Kenta*; Tsutsui, Satoshi*; Hirai, Daigoro*; Katayama, N.*; Nomoto, Takuya*; Shin, S.*; Kubota, Masato; Haga, Yoshinori; Suzuki, Hiroyuki*; et al.

no journal, , 

no abstracts in English

Oral presentation

Study of crystal field-phonon binding in CeAs by inelastic X-ray scattering

Arai, Yosuke*; Kuroda, Kenta*; Tsutsui, Satoshi*; Hirai, Daigoro*; Katayama, Wago*; Shin, S.*; Kubota, Masato; Nomoto, Takuya*; Suzuki, Hiroyuki*; Miyasaka, Shigeki*; et al.

no journal, , 

no abstracts in English

Oral presentation

Temperature dependence of the electronic structure in low-carrier semi-metal CeAs revealed by angle-resolved photoemission spectroscopy

Arai, Yosuke*; Kuroda, Kenta*; Nomoto, Takuya*; Hirai, Daigoro*; Katayama, Wago*; Tsutsui, Satoshi*; Tanaka, Hiroaki*; Arita, Masashi*; Shin, S.*; Kubota, Masato; et al.

no journal, , 

no abstracts in English

12 (Records 1-12 displayed on this page)
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