Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
-ray irradiationHirota, Koichi; Zhao, C.*
JAEA-Review 2007-060, JAEA Takasaki Annual Report 2006, P. 56, 2008/03
To develop the decompsotion technology for dioxin in analytical wastes, octachlorodibenzo-p-dioxin (OCDD) in ethanol, n-nonane, and toluene was irradiated with -rays to examine its decomposition behavior with a change in toxicity. The results showed that the highest decomposition rate was obtained from OCDD in ethernol, followed by in toluene and in n-nonane. This deocomposition order is corresponding to that for G-value for the formation of solvated electron in the three solvenets, indicating that OCDD was decomposed through reactions with solvated electron. When compared to PCDD decomposition, the order was ethanol
toluenen-nonane. From the fact that 80% of reacted OCDD was dechlorinated in n-nonane, OCDD in n-nonane was reacted with solvated electron and dechlorinated to form lower chlorinated dioxin. Oxidation is the dominant reactions for the irradiation of dioxin in toluene because only 20-30% of reacted OCDD was dechlorinated.
Onoda, Shinobu; Hirao, Toshio; Oshima, Takeshi; Kaneko, Hirohisa; Sanami, Toshiya*
JAEA-Review 2007-060, JAEA Takasaki Annual Report 2006, P. 9, 2008/03
no abstracts in English
Taguchi, Mitsumasa; Kimura, Atsushi; Hirota, Koichi; Kurashima, Satoshi; Baldacchino, G.*; Katsumura, Yosuke*
JAEA-Review 2007-060, JAEA Takasaki Annual Report 2006, P. 158, 2008/03
no abstracts in English
Kondo, Takafumi*; Yang, J.*; Kan, Koichi*; Yoshida, Yoichi*; Shibata, Hiromi*; Taguchi, Mitsumasa; Kojima, Takuji
JAEA-Review 2007-060, JAEA Takasaki Annual Report 2006, P. 160, 2008/03
no abstracts in English
Nakagawa, Seiko*; Ota, Nobuaki*; Taguchi, Mitsumasa; Hirota, Koichi
JAEA-Review 2007-060, JAEA Takasaki Annual Report 2006, P. 159, 2008/03
no abstracts in English
Shimada, Akihiko; Hirota, Koichi
JAEA-Review 2007-060, JAEA Takasaki Annual Report 2006, P. 55, 2008/03
no abstracts in English
Nagaishi, Ryuji; Yamada, Reiji; Aoyagi, Noboru; Sugo, Yumi
JAEA-Review 2007-060, JAEA Takasaki Annual Report 2006, P. 161, 2008/03
From the standpoints of utilization of radioactive wastes, and of sophistication of separation process of spent fuels, we have been investigating promotion or inhibition of radiation-induced reactions in immiscible heterogeneous systems: solutions coexisting/contacting with solid oxides, solvent system with aqueous and organic phases, etc.. We have recently report that the reactions of reduction of metal ions and of hydrogen production in aqueous solution were promoted by adding oxide particles to the solution, and that the radiolysis of amides in n-dodecane was dependent on aqueous solution contacting with the n-dodecane. In this report, we illustrate recover of platinum-group elements from aqueous solution, and non-toxic treatment of chrysotile asbestos using ionizing radiations as the experimental results found in fiscal 2006.
Sekimoto, Hitoshi*; Kawachi, Naoki; Honda, Shuzo*; Yamaguchi, Yoshie*; Kato, Shota*; Yoneyama, Kaori*; Fujimaki, Shu; Suzui, Nobuo; Ishii, Satomi; Watanabe, Satoshi; et al.
JAEA-Review 2007-060, JAEA Takasaki Annual Report 2006, P. 124, 2008/03
no abstracts in English
Kasai, Noboru; Yoshii, Fumio; Yuasa, Junichi*
JAEA-Review 2007-060, JAEA Takasaki Annual Report 2006, P. 54, 2008/03
no abstracts in English
Suzui, Nobuo; Kawachi, Naoki; Ishii, Satomi; Nakamura, Shinichi*; Matsuhashi, Shimpei; Fujimaki, Shu
JAEA-Review 2007-060, JAEA Takasaki Annual Report 2006, P. 121, 2008/03
Yamada, Keisuke; Uno, Sadanori; Okoshi, Kiyonori; Chiba, Atsuya; Saito, Yuichi; Ishii, Yasuyuki; Sato, Takahiro; Mizuhashi, Kiyoshi
JAEA-Review 2007-060, JAEA Takasaki Annual Report 2006, P. 194, 2008/03
no abstracts in English
Xe-fullerene by ion implantationWatanabe, Satoshi; Ishioka, Noriko; Matsuhashi, Shimpei
JAEA-Review 2007-060, JAEA Takasaki Annual Report 2006, P. 129, 2008/03
Iida, Yasuhiko*; Hanaoka, Hirofumi*; Katabuchi, Tatsuya*; Watanabe, Shigeki; Ishioka, Noriko; Watanabe, Satoshi; Matsuhashi, Shimpei; Higuchi, Tetsuya*; Oriuchi, Noboru*; Endo, Keigo*
JAEA-Review 2007-060, JAEA Takasaki Annual Report 2006, P. 128, 2008/03
Seito, Hajime; Ichikawa, Tatsuya*; Haneda, Noriyuki; Kaneko, Hirohisa; Sato, Yoshishige*; Watanabe, Hiroshi*; Kojima, Takuji
JAEA-Review 2007-060, JAEA Takasaki Annual Report 2006, P. 200, 2008/03
no abstracts in English
Seito, Hajime; Kojima, Takuji; Takei, Taro*; Ide, Takashi*; Mori, Ichiro*
JAEA-Review 2007-060, JAEA Takasaki Annual Report 2006, P. 198, 2008/03
no abstracts in English
Co -ray in radiation processingSeito, Hajime; Kojima, Takuji; Kaneko, Hirohisa; Haneda, Noriyuki
JAEA-Review 2007-060, JAEA Takasaki Annual Report 2006, P. 199, 2008/03
no abstracts in English
-ray irradiation facilitiesKaneko, Hirohisa; Hanaya, Hiroaki; Haneda, Noriyuki; Yamagata, Ryohei; Seito, Hajime; Kanazawa, Takao; Kojima, Takuji; Koyama, Shigeru*; Yamaguchi, Toshiyuki*; Kawashima, Ikuo*; et al.
JAEA-Review 2007-060, JAEA Takasaki Annual Report 2006, P. 209, 2008/03
The accelerator served mainly for graft-polymerization for new material development, radiation effect study on semiconductors, and various experiments of outside users. The annual operation time for the electron accelerator is 597.4h(517h for vertical beams, 80.4h for horizontal beams) The Co-60 -ray irradiation facilities consist of three buildings (8 rooms) and cover a wide dose-rate range from 0.04Gy/h to 20kGy/h with eight irradiation cells. The annual operation time for the cobalt first, second irradiation facilities and food irradiation facility is 20,844 h, 6,335 h and 3,150 h.
-ray irradiation facilitiesKojima, Takuji; Kaneko, Hirohisa; Haneda, Noriyuki; Hanaya, Hiroaki; Yamagata, Ryohei; Seito, Hajime; Kanazawa, Takao; Koyama, Shigeru*; Yamaguchi, Toshiyuki*; Kawashima, Ikuo*; et al.
JAEA-Review 2007-060, JAEA Takasaki Annual Report 2006, P. 208, 2008/03
An electron accelerator and three ray irradiation facilities were operated for various research subjects as operation plan in FY 2006 without serious trouble. The number of research subjects for the No.1 accelerator, the Cobalt No.1 facility, the Cobalt No.2 facility, and the Food irradiation facility, is 544, 159, 622, and 357, respectively.
Hanaya, Hiroaki; Agematsu, Takashi; Kojima, Takuji
JAEA-Review 2007-060, JAEA Takasaki Annual Report 2006, P. 197, 2008/03
no abstracts in English
Ukai, Mitsuko*; Matsuura, Masaaki*; Ogawa, Satoko*; Kume, Tamikazu; Kikuchi, Masahiro; Sakashita, Tetsuya; Funayama, Tomoo; Kobayashi, Yasuhiko
JAEA-Review 2007-060, JAEA Takasaki Annual Report 2006, P. 118, 2008/03
Irradiation of food is a non-thermal treatment and a method of cold pasteurization. This pasteurization technique retains the quality of foods as prepared and harvested. Recently, the use of this sterilization technology by irradiation through various electromagnetic waves or rays of elementary particles is gaining wide applications. Electron spin resonance (ESR) spectroscopy has been applied for the evaluation of irradiation on the wide variety of foods. We have reported on a new ESR protocol for the analysis for irradiated foods. In the present study, we will report on the radiation-induced radicals containing in wheat flour using ESR spectroscopy. We shall describe new radical species in the irradiated wheat flour by comparison with non-irradiated wheat flour.
