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Collaborative Laboratories for Advanced Decommissioning Science; Okayama University*
JAEA-Review 2023-038, 48 Pages, 2024/03
The Collaborative Laboratories for Advanced Decommissioning Science (CLADS), Japan Atomic Energy Agency (JAEA), had been conducting the Nuclear Energy Science & Technology and Human Resource Development Project (hereafter referred to "the Project") in FY2022. The Project aims to contribute to solving problems in the nuclear energy field represented by the decommissioning of the Fukushima Daiichi Nuclear Power Station, Tokyo Electric Power Company Holdings, Inc. (TEPCO). For this purpose, intelligence was collected from all over the world, and basic research and human resource development were promoted by closely integrating/collaborating knowledge and experiences in various fields beyond the barrier of conventional organizations and research fields. The sponsor of the Project was moved from the Ministry of Education, Culture, Sports, Science and Technology to JAEA since the newly adopted proposals in FY2018. On this occasion, JAEA constructed a new research system where JAEA-academia collaboration is reinforced and medium-to-long term research/development and human resource development contributing to the decommissioning are stably and consecutively implemented. Among the adopted proposals in FY2022, this report summarizes the research results of the "Embedded system using a radiation-hardened processor" conducted in FY2022. The present study aims to be developing a radiation-hardened optoelectronic processor with a 10 MGy total-ionizing-dose (TID) tolerance, a radiation-hardened processor without any optical component with a 4 MGy TID tolerance, a radiation-hardened memory with a 4 MGy TID tolerance, and a radiation-hardened power supply unit with a 1 MGy TID tolerance. Moreover, Japanese research group will support radiation- hardened field programmable gate arrays, power supply units, and radiation-hardened optical systems for radiation-hardened robot systems and radiation sensor systems developed by UK team.
Collaborative Laboratories for Advanced Decommissioning Science; Tohoku University*
JAEA-Review 2022-063, 86 Pages, 2023/02
The Collaborative Laboratories for Advanced Decommissioning Science (CLADS), Japan Atomic Energy Agency (JAEA), had been conducting the Nuclear Energy Science & Technology and Human Resource Development Project (hereafter referred to "the Project") in FY2021. The Project aims to contribute to solving problems in the nuclear energy field represented by the decommissioning of the Fukushima Daiichi Nuclear Power Station (1F), Tokyo Electric Power Company Holdings, Inc. (TEPCO). For this purpose, intelligence was collected from all over the world, and basic research and human resource development were promoted by closely integrating/collaborating knowledge and experiences in various fields beyond the barrier of conventional organizations and research fields. The sponsor of the Project was moved from the Ministry of Education, Culture, Sports, Science and Technology to JAEA since the newly adopted proposals in FY2018. On this occasion, JAEA constructed a new research system where JAEA-academia collaboration is reinforced and medium-to-long term research/development and human resource development contributing to the decommissioning are stably and consecutively implemented. Among the adopted proposals in FY2019, this report summarizes the research results of the "The study of oxidative stress status in the organs exposed to low dose/low dose-rate radiation" conducted from FY2019 to FY2021. Since the final year of this proposal was FY2021, the results for three fiscal years were summarized. The present study aims to investigate the biological effects of low dose/low dose-rate radiation exposure, which is of great social interest, on the oxidative stress status of individual organs and will contribute to the collection of scientific data in a dose range to be required. The samples to be analyzed in this study were collected from wild Japanese macaques exposed in the ex-evacuation zone after the accident of 1F.
Collaborative Laboratories for Advanced Decommissioning Science; Tohoku University*
JAEA-Review 2021-050, 82 Pages, 2022/01
The Collaborative Laboratories for Advanced Decommissioning Science (CLADS), Japan Atomic Energy Agency (JAEA), had been conducting the Nuclear Energy Science & Technology and Human Resource Development Project (hereafter referred to "the Project") in FY2020. The Project aims to contribute to solving problems in the nuclear energy field represented by the decommissioning of the Fukushima Daiichi Nuclear Power Station, Tokyo Electric Power Company Holdings, Inc. (TEPCO). For this purpose, intelligence was collected from all over the world, and basic research and human resource development were promoted by closely integrating/collaborating knowledge and experiences in various fields beyond the barrier of conventional organizations and research fields. The sponsor of the Project was moved from the Ministry of Education, Culture, Sports, Science and Technology to JAEA since the newly adopted proposals in FY2018. On this occasion, JAEA constructed a new research system where JAEA-academia collaboration is reinforced and medium-to-long term research/development and human resource development contributing to the decommissioning are stably and consecutively implemented. Among the adopted proposals in FY2019, this report summarizes the research results of the "The study of oxidative stress status in the organs exposed to low dose/low dose-rate radiation" conducted in FY2020. The present study aims to investigate the biological effects of low dose/low dose-rate radiation exposure, which is of great social interest, on the oxidative stress status of individual organs and will contribute to the collection of scientific data in a dose range to be required. An interdisciplinary collaborative study discussed the correlation between radiation dose and the biological effect by analyzing the samples of wild Japanese macaques exposed to radiation due to the accident of Fukushima Daiichi Nuclear Power Station and of animal experiments.
Collaborative Laboratories for Advanced Decommissioning Science; Tohoku University*
JAEA-Review 2020-048, 49 Pages, 2021/01
The Collaborative Laboratories for Advanced Decommissioning Science (CLADS), Japan Atomic Energy Agency (JAEA), had been conducting the Nuclear Energy Science & Technology and Human Resource Development Project (hereafter referred to "the Project") in FY2019. The Project aims to contribute to solving problems in the nuclear energy field represented by the decommissioning of the Fukushima Daiichi Nuclear Power Station, Tokyo Electric Power Company Holdings, Inc. (TEPCO). For this purpose, intelligence was collected from all over the world, and basic research and human resource development were promoted by closely integrating/collaborating knowledge and experiences in various fields beyond the barrier of conventional organizations and research fields. The sponsor of the Project was moved from the Ministry of Education, Culture, Sports, Science and Technology to JAEA since the newly adopted proposals in FY2018. On this occasion, JAEA constructed a new research system where JAEA-academia collaboration is reinforced and medium-to-long term research/development and human resource development contributing to the decommissioning are stably and consecutively implemented. Among the adopted proposals in FY2019, this report summarizes the research results of the "The study of oxidative stress status in the organs exposed to low dose/low dose-rate radiation". This study investigates the biological effects of low dose/low dose-rate radiation exposure, which is of great social interest, on the oxidative stress status of individual organs and will contribute to the collection of scientific data in a dose range to be required. An interdisciplinary collaborative study discussed the correlation between radiation dose and the biological effect by analyzing the samples of wild Japanese macaques exposed to radiation due to the accident of Fukushima nuclear power station and of animal experiments.
Hakoda, Teruyuki; Kojima, Takuji
Radiation Physics and Chemistry, 74(5), p.302 - 309, 2005/12
Times Cited Count:0 Percentile:0.01(Chemistry, Physical)no abstracts in English
Kojima, Takuji; Hirota, Koichi; Taguchi, Mitsumasa; Hakoda, Teruyuki; Takigami, Machiko
Proceedings of 25th JAIF-KAIF Seminar on Nuclear Industry, p.193 - 201, 2003/00
The electron beam technology for decomposition/elimination of dioxin contained in flue gas has been developed using real waste gas of 1,000 mN/h released from the municipal solid waste incineration facility at 200C. The decomposition efficiency, the ratio of toxic equivalent dioxin concentration before and after EB irradiation to doses above 15kGy is higher than 90%, which clears the regulation limit in the Japanese special measures of dioxin release. The chemical process of dioxin decomposition was studied and low-toxicity of irradiated gas was confirmed in terms of endocrine disrupter influence.
Kojima, Takuji; Hakoda, Teruyuki; Sunaga, Hiromi; Takizawa, Haruki; Hanaya, Hiroaki
Proceedings of 9th International Conference on Radiation Curing (RadTech Asia '03) (CD-ROM), 4 Pages, 2003/00
Dosimetry study for 300 keV electron beams was performed using Gafchromic film dosimeters having 8-m thick radiation-sensitive layer for dose rate measurement, a prototype total-absorption aluminum calorimeter for energy fluence measurement and semi-empirical calculation using EDMULT code for depth-dose distribution estimation. The three preliminary results are compared concerning to dose rate distribution and energy fluence as a function of depth in air. Influences in dosimetry for 300 keV electrons are discussed based on these results.
Kojima, Takuji; Tachibana, Hiroyuki; Haruyama, Yasuyuki; *
Hoshasen Kagaku, (66), p.47 - 49, 1998/00
no abstracts in English
Kojima, Takuji; Tanaka, Ryuichi
Nihon Yakkyokuho Ni Junkyoshita Mekkinho Oyobi Biseibutsu Satsumetsuho, p.74 - 82, 1997/00
no abstracts in English
F.Coninckx*; A.Janett*; Kojima, Takuji; S.Onori*; M.Pantaloni*; H.Schoenbacher*; M.Tavlet*; Wieser, A.*
Applied Radiation and Isotopes, 47(11-12), p.1223 - 1229, 1996/00
Times Cited Count:5 Percentile:45.07(Chemistry, Inorganic & Nuclear)no abstracts in English
H.H.Mai*; Ng.D.Duong*; Kojima, Takuji
Applied Radiation and Isotopes, 47(2), p.259 - 261, 1996/00
Times Cited Count:2 Percentile:24.71(Chemistry, Inorganic & Nuclear)no abstracts in English
Kojima, Takuji; *
Radioisotopes, 44(9), p.603 - 607, 1995/09
no abstracts in English
S.R.Nilekani*; G.R.Narayan*; B.Suseela*; R.M.Bhat*; B.L.Gupta*; Kojima, Takuji; Takizawa, Haruki; Sunaga, Hiromi; Tanaka, Ryuichi
Applied Radiation and Isotopes, 46(3), p.205 - 207, 1995/00
Times Cited Count:5 Percentile:58.38(Chemistry, Inorganic & Nuclear)no abstracts in English
Kojima, Takuji; H.L.A.Ranjith*; Haruyama, Yasuyuki; Kashiwazaki, Shigeru*; Tanaka, Ryuichi
Applied Radiation and Isotopes, 44(1-2), p.41 - 45, 1993/00
Times Cited Count:12 Percentile:74.44(Chemistry, Inorganic & Nuclear)no abstracts in English
Matsuda, Koji; *
Applied Radiation and Isotopes, 42(3), p.235 - 239, 1991/00
no abstracts in English
Tamada, Masao; Asano, Masaharu; Yoshida, Masaru; Kumakura, Minoru
Radiation Physics and Chemistry, 36(6), p.866 - 867, 1990/00
no abstracts in English
; ; ;
Radiation Physics and Chemistry, 17, p.217 - 221, 1981/00
no abstracts in English
; ; Hotta, Hiroshi
Radiat.Res., 63(1), p.14 - 23, 1975/01
Times Cited Count:10no abstracts in English