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Hirata, Sakiko*; Kusaka, Ryoji; Meiji, Shogo*; Tamekuni, Seita*; Okudera, Kosuke*; Hamada, Shoken*; Sakamoto, Chihiro*; Honda, Takumi*; Matsushita, Kosuke*; Muramatsu, Satoru*; et al.
Inorganic Chemistry, 62(1), p.474 - 486, 2023/01
Times Cited Count：3 Percentile：24.84(Chemistry, Inorganic & Nuclear)
-rays in 
Toyoshima, Yoshiyuki*; Takahashi, Akemi*; Tanaka, Hisaki*; Watanabe, Jun*; Mogi, Yoshinobu*; Yamazaki, Tatsuo*; Hamada, Ryoko*; Iwashita, Kazuhiro*; Sato, Katsuya; Narumi, Issei
Mutation Research; Fundamental and Molecular Mechanisms of Mutagenesis, 740(1-2), p.43 - 49, 2012/12
Times Cited Count：19 Percentile：48.22(Biotechnology & Applied Microbiology)Miyake, Osamu; Hamada, Hirotsugu; Tanabe, Hiromi; Wada, Yusaku; Miyakawa, Akira; Okabe, Ayao; Nakai, Ryodai; Hiroi, Hiroshi
JNC TN2400 2003-003, 225 Pages, 2004/02
JNC-TN2400-2003-003.pdf:40.45MB
The model has been developed for the assessment of the overheating tube failure in an event of sodium-water reaction accident of fast breeder reactor's steam generators (SGs). The model has been applied to the Monju SG studies.
Ando, Toshinari; Kato, Takashi; Ushigusa, Kenkichi; Nishio, Satoshi; Kurihara, Ryoichi; Aoki, Isao; Hamada, Kazuya; Tsuji, Hiroshi; Hasegawa, Mitsuru*; Naito, Shuji*
Fusion Engineering and Design, 58-59, p.13 - 16, 2001/11
Times Cited Count：10 Percentile：57.91(Nuclear Science & Technology)no abstracts in English
Al conductorKoizumi, Norikiyo; Ando, Toshinari; Takahashi, Yoshikazu; Matsui, Kunihiro; Nakajima, Hideo; Tsuchiya, Yoshinori; Kikuchi, Kenji; Nunoya, Yoshihiko; Kato, Takashi; Isono, Takaaki; et al.
Senshin A15-gata Kagobutsu Chodendo Senzai Shimpojiumu Rombunshu, p.5 - 9, 2000/00
no abstracts in English
Seino, Ryosuke*; Hamada, Nobuyuki*; Matsuya, Yusuke; Date, Hiroyuki*
no journal, ,
Risk of cataract after low-dose exposure to radiation has drawn an attention; however, its onset mechanisms remain uncertain. In recent years, based on 
experiments using human lens epithelial cells (HLEC1), it has been reported that irradiation with higher dose than 2 Gy can enhance cell proliferation (excessive proliferation), which is suspected as an important factor for dose response for cataract. In this study, to clarify the excessive proliferation for the HLEC1 cells, we developed a model for predicting colony formation after exposure using agent-based model, NetLogo. This model newly considers the premature aging and DNA damage repair processes, and was compared to the experimental probability density of colony size. The model predictions considering the premature aging was in good agreement with the experimental colony size, while we succeeded in reproducing measured cell-cycle distribution using the model accounting DNA repair process. This model analysis suggests that the premature aging of the HLEC1 cells is an important factor for determining the proliferation ability. The developed model can contribute to analyzing the underlying mechanisms for clonogenicity of the HLEC1 cells after exposure in future study.
Asano, Hidekazu*; Sakuragi, Tomofumi*; Hamada, Ryo*; Han, C. Y.*; Nakase, Masahiko*; Matsumura, Tatsuro; Chiba, Go*; Sagara, Hiroshi*; Takeshita, Kenji*
no journal, ,
no abstracts in English
Matsumura, Tatsuro; Tsubata, Yasuhiro; Asano, Hidekazu*; Sakuragi, Tomofumi*; Hamada, Ryo*
no journal, ,
no abstracts in English
Matsumura, Tatsuro; Asano, Hidekazu*; Sakuragi, Tomofumi*; Hamada, Ryo*; Han, C. Y.*; Nakase, Masahiko*; Chiba, Go*; Sagara, Hiroshi*; Takeshita, Kenji*
no journal, ,
The issue of high-level waste disposal is important for the sustainable use of nuclear energy. P&T technology of long-lived and highly radiotoxic MA is a key technology. The MA separation process, which separates MA from the high-level waste, is one of the essential technology for realizing the P&T technology. JAEA has been developing the SELECT process using the solvent extraction technique for the MA separation process. Target values for separation performance were 99% recovery rate based on radiotoxicity evaluation and 95% MA product purity from evaluation of the performance of transmutation system. The separation process was demonstrated by the test using genuine HLW. SELECT process consists of two steps. The second step for MA/RE separation requires 40 extraction stages for the target value, and there was a issue of introduction and operation costs. Therefore, we set a reasonable recovery rate based on the evaluation of the environmental impact of the disposal site. Based on the target value, quantitative evaluation was carried out using the PARC-MA code, and the number of extraction stages in the MA/RE separation process and the purity of the MA product were obtained. We believe that the configuration of a realistic simplified MA separation process has been clarified.
Matsumura, Tatsuro; Asano, Hidekazu*; Sakuragi, Tomofumi*; Hamada, Ryo*
no journal, ,
no abstracts in English
Asano, Hidekazu*; Sakuragi, Tomofumi*; Hamada, Ryo*; Han, C. Y.*; Nakase, Masahiko*; Matsumura, Tatsuro; Chiba, Go*; Sagara, Hiroshi*; Takeshita, Kenji*
no journal, ,
no abstracts in English
Kobayashi, Toru; Nakase, Masahiko*; Watanabe, Shinta*; Maki, Ryosuke*; Maruyama, Satofumi*; Kikunaga, Hidetoshi*; Asano, Hidekazu*; Sakuragi, Tomofumi*; Hamada, Ryo*; Harigai, Miki*
no journal, ,
no abstracts in English
