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Featured researches published by Yoji Shibata.


Nuclear Technology | 1992

Study of thermal-hydraulic characteristics during decay heat removal in a pool-type fast breeder reactor

Masayoshi Akutsu; Yoshinobu Okabe; Kazuziro Satoh; Hideki Kamide; Kenji Hayashi; Nobuyuki Naohara; Kengo Iwashige; Yoji Shibata

This paper reports that the thermal-hydraulic characteristics of a pool-type fast breeder reactor during decay heat removal are studied experimentally with a one-eighth-scaled three-dimensional reactor model using water as the working fluid. The model is designed to simulate reactor operations from full power to scram transient and decay heat removal conditions as well as two types of decay heat removal systems, a direct reactor auxiliary cooling system (DRACS) and a primary reactor auxiliary cooling system (PRACS). The transient thermal-hydraulic performance of the DRACS is compared with that of the PRACS for the water test results. The results are used to evaluate the accuracy of the multidimensional analysis codes AQUA and THERVIS. The analytical results are generally in good agreement with the measurements.


Archive | 1988

Multimedia mail system

Yoji Shibata


Archive | 1992

Teleconference terminal equipment and teleconference module

Yoji Shibata; Masaaki Takizawa; Hitoshi Matsushima; Kiyoshi Ishida; Atsuo Yoshida; Atsushi Ishibashi; Takehiko Yamada


Archive | 1992

Multipoint teleconference system employing communication channels set in ring configuration

Yoji Shibata; Masaaki Takizawa


Archive | 1992

Multipoint teleconference system employing H. 221 frames

Yoji Shibata; Masaaki Takizawa


Archive | 1992

Picture codec and teleconference terminal equipment

Yoji Shibata; Masaaki Takizawa; Hitoshi Matsushima; Hiroshi Yoshikawa; Atsuo Yoshida; Toru Ebihara; Jun Furuya; Yukinobu Maruyama; Takehiko Yamada


Archive | 1993

Video conference system automatically started at reserved time

Hiroaki Takatsuki; Toru Komatsu; Tatsuya Konishi; Takeshi Hoshino; Seiji Toyoda; Yoji Shibata; Satoshi Endo; Iwao Ishinabe; Kiyoshi Ishida


Archive | 1979

Buffer memory dispersion type video/audio transmission system

Hirohito Nakajima; Katsumi Haji; Yoji Shibata; Wataru Kosuge


Archive | 1987

Automatic data/voice sending/receiving mode switching device

Yoji Shibata


Archive | 1979

Digital video and audio file system

Hidetoh Hata; Katsumi Haji; Kazushige Sako; Yoji Shibata; Masahiko Achiha

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