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and Tb
measured by gel electrophoresis techniquesNakano, Sumika*; Marumo, Kazuki*; Kazami, Rintaro*; Saito, Takumi*; Haraga, Tomoko; Tasaki-Handa, Yuiko*; Saito, Shingo*
Environmental Science & Technology, 55(22), p.15172 - 15180, 2021/11
Times Cited Count：5 Percentile：33.8(Engineering, Environmental)Humic acid (HA) can strongly complex with metal ions to form a supramolecular assembly via coordination binding. However, determining the supramolecular size distribution and stoichiometry between small HA unit molecules constituting HA supramolecule and metal ions has proven to be challenging. Here, we investigated the changes in the size distributions of HAs induced by Cu and Tb ions using a unique polyacrylamide gel electrophoresis (PAGE) for the separation and quantification of HA complexes and metal ions bound, followed by UV-Vis spectroscopy and EEM-PARAFAC. It was found that the supramolecular behaviors of Cu and Tb complexes with HA collected from peat and deep groundwater (HHA) differed. Our results suggest that this supramolecular stoichiometry is related to the abundance of sulfur atoms in the elemental composition of HHA. Our results provide new insights into HA supramolecules formed via metal complexation.
-humate complexesMarumo, Kazuki*; Matsumoto, Atsumasa*; Nakano, Sumika*; Shibukawa, Masami*; Saito, Takumi*; Haraga, Tomoko; Saito, Shingo*
Environmental Science & Technology, 53(24), p.14507 - 14515, 2019/12
Times Cited Count：7 Percentile：28.45(Engineering, Environmental)Humic acids (HA) are responsible for the fate of metal ions in the environment. We developed a polyacrylamide gel electrophoresis (PAGE) technique to investigate the MW distributions of metal ion (copper ion). Combining contaminant-metal-free and high-resolution PAGE systems for HA provided accurate MW distributions for the metal ions. Coupling this system with UV-Vis spectrometry and the excitation-emission matrix (EEM) spectrometry-parallel factor analysis (PARAFAC) method revealed new insights into metal-HA complex. Interestingly, the MW distributions of the three metal ions were entirely different, indicating that the presence of specific binding environments in HA for the metal ions depending its MW. The MW distributions of five fluorescent components were associated with the metal ion distributions. Our PAGE-based methodology suggests that metal binding sites and fluorescent components in HA exhibit heterogeneity in terms of metal binding affinity and MW.
Yamagishi, Isao; Nagaishi, Ryuji; Kato, Chiaki; Morita, Keisuke; Terada, Atsuhiko; Kamiji, Yu; Hino, Ryutaro; Sato, Hiroyuki; Nishihara, Kenji; Tsubata, Yasuhiro; et al.
Journal of Nuclear Science and Technology, 51(7-8), p.1044 - 1053, 2014/07
Times Cited Count：19 Percentile：81.41(Nuclear Science & Technology)For safe storage of zeolite wastes generated by treatment of radioactive saline water at the Fukushima Daiichi Nuclear Power Station, properties of the Herschelite adsorbent were studied and its adsorption vessel was evaluated for hydrogen production and corrosion. Hydrogen production depends on its water level and dissolved species because hydrogen is oxidized by radicals in water. It is possible to evaluate hydrogen production rate in Herschelite submerged in seawater or pure water by taking into account of the depth effect of the water. The reference vessel of decay heat 504 W with or without residual pure water was evaluated for the hydrogen concentration by thermal hydraulic analysis using obtained fundamental properties. Maximum hydrogen concentration was below the lower explosive limit (4 %). The steady-state corrosion potential of a stainless steel 316L increased with absorbed dose rate but its increase was repressed by the presence of Herschelite. At 750 Gy/h and 
60
C which were values evaluated at the bottom of the vessel of 504 W, the localized corrosion of SUS316L contacted with Herschelite would not immediately occur under 20,000 ppm of Cl
concentration.
Nakatsuka, Noboru; Sato, Haruo; Tanai, Kenji; Nakayama, Masashi; Sawada, Sumiyuki*; Asano, Hidekazu*; Saito, Masahiko*; Yoshino, Osamu*; Tsukahara, Shigeki*; Hishioka, Sosuke*; et al.
JAEA-Research 2013-034, 70 Pages, 2014/01
JAEA-Research-2013-034.pdf:9.11MB
Japan Atomic Energy Agency (JAEA) and Radioactive Waste Management Funding and Research Center (RWMC) concluded the letter of cooperation agreement on the research and development of radioactive waste disposal in April, 2005, and have been carrying out the collaboration work based on the agreement. JAEA have been carrying out the Horonobe Underground Research Laboratory (URL) Project which is intended for a sedimentary rock in the Horonobe town, Hokkaido, since 2001. In the project, geoscientific research and research and development on geological disposal technology are being promoted. Meanwhile, the government (the Agency for Natural Resources and Energy, Ministry of Economy, Trade and Industry) has been promoting construction of equipments for the full-scale demonstration of engineered barrier system and operation technology for high-level radioactive waste (HLW) disposal since 2008, to enhance public's understanding to the geological disposal of HLW, e.g. using underground facility. RWMC received an order of the project in fiscal year 2012 (2011/2012) continuing since fiscal year 2008 (2008/2009). Since topics in this project are included in the Horonobe URL Project, JAEA carried out this project as collaboration work continuing in fiscal year 2008. This report summarizes the results of engineering technology carried out in this collaboration work in fiscal year 2012. In fiscal year 2012, part of the equipments for emplacement of buffer material was produced and visualization test for water penetration in buffer material were carried out.
Nakatsuka, Noboru; Sato, Haruo; Tanai, Kenji; Sugita, Yutaka; Nakayama, Masashi; Sawada, Sumiyuki*; Niinuma, Hiroaki*; Asano, Hidekazu*; Saito, Masahiko*; Yoshino, Osamu*; et al.
JAEA-Research 2013-027, 34 Pages, 2013/11
JAEA-Research-2013-027.pdf:5.84MB
Japan Atomic Energy Agency (JAEA) and Radioactive Waste Management Funding and Research Center (RWMC) concluded the letter of cooperation agreement on the research and development of radioactive waste disposal in April, 2005, and have been carrying out the collaboration work based on the agreement. JAEA have been carrying out the Horonobe Underground Research Laboratory (URL) Project which is intended for a sedimentary rock in the Horonobe town, Hokkaido, since 2001. In the project, geoscientific research and research and development on geological disposal technology are being promoted. Meanwhile, the government (the Agency for Natural Resources and Energy, Ministry of Economy, Trade and Industry) has been promoting construction of equipments for the full-scale demonstration of engineered barrier system and operation technology for high-level radioactive waste (HLW) disposal since 2008, to enhance public's understanding to the geological disposal of HLW, e.g. using underground facility. RWMC received an order of the project in fiscal year 2010 (2010/2011) continuing since fiscal year 2008 (2008/2009). Since topics in this project are included in the Horonobe URL Project, JAEA carried out this project as collaboration work continuing in fiscal year 2008. This report summarizes the results of engineering technology carried out in this collaboration work in fiscal year 2011. In fiscal year 2011, part of the equipments for emplacement of buffer material was produced and visualization test for water penetration in buffer material were carried out.
; ; Wakai, Takashi; Aoto, Kazumi; Ueno, Fumiyoshi; Nagae, Yuji; Kato, Shoichi; Saito, Junichi
JNC TN9400 2003-034, 26 Pages, 2003/05
JNC-TN9400-2003-034.pdf:1.16MB
The structual material of the future Fast Breeder Reactors(FBRs) must be improved to achive some requirements for improvement of safety and economical competitiveness. To prepare the desired data for the structural material development for the future FBRs, some mechanical and chemical tests, i.e. high temterature tensile tests and sodium corrosion tests, of the high-purity Fe-Cr alloys were conducted under the FBR conditions. As a result, following conclusions are obtained; 1) By eliminating the trace elements, high Cr content iron based alloys can be produced. It was clarified that such alloys have good tensile properties and creep strength enough for practical use at elevated temperature. 2) Through the manufacturing of a full size structure using the high purity Fe-50% Cr alloy, it was confirmed that the alloy has good manufacturability enough for practical use."
Saito, Masahiro*; Okada, Noriko*; Nishibori, Eiji*; Takagiwa, Hiroyuki*; Yokoo, Tetsuya*; Nishi, Masakazu*; Kakurai, Kazuhisa; Kunii, Satoru*; Takata, Masaki*; Sakata, Makoto*; et al.
Journal of the Physical Society of Japan, 71(10), p.2369 - 2372, 2002/10
Times Cited Count：14 Percentile：62.19(Physics, Multidisciplinary)no abstracts in English
Fujita, Mitsutane*; Kinugawa, Junichi*; Tsuji, Hirokazu; Kaji, Yoshiyuki; Tachi, Yoshiaki*; Saito, Junichi*; Shimura, Kazuki*; Nakajima, Ritsuko*; Iwata, Shuichi*
Fusion Engineering and Design, 51-52, p.769 - 774, 2000/11
Times Cited Count：1 Percentile：12.08(Nuclear Science & Technology)no abstracts in English
Kaji, Yoshiyuki; Tsuji, Hirokazu; Sakino, Takao*; Fujita, Mitsutane*; Kinugawa, Junichi*; Tachi, Yoshiaki*; Saito, Junichi*; Kano, Shigeki*; Shimura, Kazuki*; Nakajima, Ritsuko*; et al.
JAERI-Tech 99-007, 32 Pages, 1999/02
no abstracts in English
Mishima, Kaichiro*; Hibiki, Takashi*; Saito, Y.*; Sugimoto, Jun; Moriyama, Kiyofumi
Nucl. Eng. Des., 189(1-3), p.391 - 403, 1999/00
Times Cited Count：13 Percentile：68.49(Nuclear Science & Technology)no abstracts in English
Saito, Y.*; Mishima, Kaichiro*; Hibiki, Takashi*; *; Sugimoto, Jun; Moriyama, Kiyofumi
Nuclear Instruments and Methods in Physics Research A, 424(1), p.142 - 147, 1999/00
Times Cited Count：16 Percentile：74.02(Instruments & Instrumentation)no abstracts in English
Mishima, Kaichiro*; Hibiki, Takashi*; *; *; Moriyama, Kiyofumi; Sugimoto, Jun
Proc. of Int. Seminar on Vapor Explosions and Explosive Eruptions, p.101 - 109, 1997/00
no abstracts in English
Yoshii, Fumio; Makuuchi, Keizo; *; *; *; *
Journal of Applied Polymer Science, 60, p.617 - 623, 1996/00
no abstracts in English
Morinaga, Masahiko*; Saito, Junichi*; Murata, Yoshinori*; Kano, Shigeki; *; Tachi, Yoshiaki; Inoue, Satoshi*
PNC TY9623 95-001, 165 Pages, 1995/03
None
; Okumura, Keisuke; ; *; *
JAERI-M 92-030, 68 Pages, 1992/03
no abstracts in English
*; Hosoi, Fumio; ; *
Chem.Pharm.Bull., 35(5), p.2045 - 2051, 1987/05
no abstracts in English
*; Hosoi, Fumio; ; *
Yakuzaigaku, 47(3), p.154 - 160, 1987/03
no abstracts in English
*; Hosoi, Fumio; ; *
Kobunshi Rombunshu, 43(1), p.51 - 58, 1986/00
Times Cited Count：2 Percentile：20.27(Polymer Science)no abstracts in English
Hosoi, Fumio; *; ; *
Kobunshi Rombunshu, 42(6), p.415 - 422, 1985/00
Times Cited Count：2 Percentile：22.32(Polymer Science)no abstracts in English
Ara, Hiroshige*; Fukumitsu, Kenji*; Iizuka, Yunosuke*; Ishii, Takashi*; Izumiya, Yasushi*; Imazu, Masanori*; Utsugida, Yoshizo*; Hasegawa, Makoto*; Maeda, Masaya*; Yabe, Yukio*; et al.
PNC TJ199 84-04VOL1, 20 Pages, 1984/03
PNC-TJ199-84-04VOL1.pdf:0.88MB
None
