Yasuji Oura

Profile Information

Affiliation: Associate Professor, Graduate School of Science, Department of Chemistry, Tokyo Metropolitan University

Degree: Doctor of Science.(Kanazawa University)
Master of Science(Kanazawa University)

J-GLOBAL ID: 200901011869739413
researchmap Member ID: 1000220181

External link: http://www.comp.tmu.ac.jp/nuclearcosmochemist

Research Interests

Research Areas

Research History

2013

Tokyo Metropolitan University
Oct, 1996 - Mar, 2005

Faculty of Science, Tokyo Metropolitan University
Apr, 1995 - Sep, 1996

日本原子力研究所専門研究員
1995 - 1996

Japan Atomic Energy Research Institute, Post doctoral

Education

- 1995

Kanazawa University
- 1995

Graduate School, Division of National Science and Technology, Kanazawa University
- 1987

University of Tsukuba
- 1987

First Cluster of College, University of Tsukuba

Papers

Widespread distribution of radiocesium-bearing microparticles over the greater Kanto Region resulting from the Fukushima nuclear accident

Yoshinari Abe, Seika Onozaki, Izumi Nakai, Kouji Adachi, Yasuhito Igarashi, Yasuji Oura, Mitsuru Ebihara, Takafumi Miyasaka, Hisashi Nakamura, Keisuke Sueki …

Progress in Earth and Planetary Science, 8(1), Dec, 2021
Reassessment of early I-131 inhalation doses by the Fukushima nuclear accident based on atmospheric Cs-137 and I-131/Cs-137 observation data and multi-ensemble of atmospheric transport and deposition models

Mai Takagi, Toshimasa Ohara, Daisuke Goto, Yu Morino, Junya Uchida, Tsuyoshi Thomas Sekiyama, Shoji F. Nakayama, Mitsuru Ebihara, Yasuji Oura, Teruyuki Nakajima …

JOURNAL OF ENVIRONMENTAL RADIOACTIVITY, 218, Jul, 2020
A new approach for reconstructing the ¹³¹I-spreading due to the 2011 Fukushima nuclear accident by means of measuring ¹²⁹I in airborne particulate matter

Mitsuru Ebihara, Yasuji Oura, N. Shirai, Yoshiyasu Nagakawa, Nomoru Sakurai, Hiromitsu Haba, Hiroyuki Matsuzaki, H. Tsuruta, Yuichi Moriguchi

Journal of Environmental Radioactivity, 208-209, Nov, 2019
A new approach for reconstructing the I-131-spreading due to the 2011 Fukushima nuclear accident by means of measuring I-129 in airborne particulate matter

Mitsuru Ebihara, Yasuji Oura, Naoki Shirai, Yoshiyasu Nagakawa, Nomoru Sakurai, Hiromitsu Haba, Hiroyuki Matsuzaki, Haruo Tsuruta, Yuichi Moriguchi

JOURNAL OF ENVIRONMENTAL RADIOACTIVITY, 208, Nov, 2019
A new approach for reconstructing the 131I-spreading due to the 2011 Fukushima nuclear accident by means of measuring 129I in airborne particulate matter.

Mitsuru Ebihara, Yasuji Oura, Naoki Shirai, Yoshiyasu Nagakawa, Nomoru Sakurai, Hiromitsu Haba, Hiroyuki Matsuzaki, Haruo Tsuruta, Yuichi Moriguchi

Journal of environmental radioactivity, 208-209 106000-106000, Nov, 2019
Investigation of Physical and Chemical Characteristics of Radioactive Aerosols Emitted From Reactor Unit 1 by Fukushima Daiichi Nuclear Power Plant Accident

ONOZAKI Seika, SUEKI Keisuke, TSURUTA Haruo, MORIGUCHI Yuichi, ABE Yoshinari, NAKAI Izumi, ADACHI Kouji, IGARASHI Yasuhito, OURA Yasuji, EBIHARA Mitsuru …

BUNSEKI KAGAKU, 68(10) 757-768, Oct, 2019 Peer-reviewed
福島第一原発事故に伴う非水溶性放射性Cs含有粒子の東日本広域への飛散

小野崎晴佳, 石川真帆, 阿部善也, 中井泉, 足立光司, 五十嵐康人, 大浦泰嗣, 海老原充, 宮坂貴文, 中村尚 …

日本分析化学会講演要旨集, 67年会 327-327, Aug, 2018
Time-series analysis of atmospheric radiocesium at two SPM monitoring sites near the Fukushima Daiichi Nuclear Power Plant just after the Fukushima accident on March 11, 2011

Haruo Tsuruta, Yasuji Oura, Mitsuru Ebihara, Yuichi Moriguchi, Toshimasa Ohara, Teruyuki Nakajima

GEOCHEMICAL JOURNAL, 52(2) 103-121, 2018
Model depiction of the atmospheric flows of radioactive cesium emitted from the Fukushima Daiichi Nuclear Power Station accident

Teruyuki Nakajima, Shota Misawa, Yu Morino, Haruo Tsuruta, Daisuke Goto, Junya Uchida, Toshihiko Takemura, Toshimasa Ohara, Yasuji Oura, Mitsuru Ebihara …

PROGRESS IN EARTH AND PLANETARY SCIENCE, 4(2), Jan, 2017 Peer-reviewed
東電福島第一原子力発電所事故直後の東日本における放射性セシウムの時空間分布―大気環境常時測定局のSPM計の使用済みテープろ紙分析データの解析―

鶴田治雄, 大浦泰嗣, 海老原充, 森口祐一, 大原利眞, 中島映至

エアロゾル研究, 32(4) 244-254, 2017 Peer-reviewed
Inverse modeling of the Cs-137 source term of the Fukushima Dai-ichi Nuclear Power Plant accident constrained by a deposition map monitored by aircraft

Keiya Yumimoto, Yu Morino, Toshimasa Ohara, Yasuji Oura, Mitsuru Ebihara, Haruo Tsuruta, Teruyuki Nakajima

JOURNAL OF ENVIRONMENTAL RADIOACTIVITY, 164 1-12, Nov, 2016 Peer-reviewed
A database of hourly atmospheric concentrations of radiocesium (134Cs and 137Cs) in suspended particulate matter collected in March 2011 at 99 air pollution monitoring stations in eastern Japan

Y. Oura, M. Ebihara, H. Tsuruta, T. Nakajima, T. Ohara, M. Ishimoto, H. Sawahata, Y. Katsumura, W. Nitta

J. Nuclear and Radiochemical Sci., 15(2) 15-26-2_12, 2015 Peer-reviewed
Determination of atmospheric radiocesium on filter tapes used at automated SPM monitoring stations for estimation of transport pathways of radionuclides from Fukushima Dai-ichi Nuclear Power Plant

Yasuji Oura, Mitsuru Ebihara, Haruo Tsuruta, Teruyuki Nakajima, Toshimasa Ohara, Mitsunori Ishimoto, Yosuke Katsumura

J. Radioanal. Nucl. Chem., 303 1555-1559, 2015 Peer-reviewed
First retrieval of hourly atmospheric radionuclides just after the Fukushima accident by analyzing filter-tapes of operational air pollution monitoring stations

Haruo Tsuruta, Yasuji Oura, Mitsuru Ebihara, Toshimasa Ohara, Teruyuki Nakajima

SCIENTIFIC REPORTS, 4, Oct, 2014 Peer-reviewed
Quality Assessment of INAA Data for Small-sized Environmental Reference Samples

Wanna Wimolwattanapun, Supamatthree Bunprapob, Mang Dung Ho, Sutisna, Yasuji Oura, Mitsuru Ebihara

ANALYTICAL SCIENCES, 30(8) 787-792, Aug, 2014 Peer-reviewed
Complementary analysis of trace elements in nail samples using instrumental neutron activation analysis and inductively coupled plasma mass spectrometry

Kasamatsu Masaaki, Suzuki Yasuhiro, Suzuki Shinichi, Boon Siong Wee, Oura Yasuji, Ebihara Mitsuru

Japanese journal of science and technology for identification, 19(2) 121-127, 2014
Non-destructive elemental analysis of large meteorite samples by prompt gamma-ray neutron activation analysis with the internal mono-standard method

Sk. Latif, Y. Oura, M. Ebihara, H. Nakahara

Analytical and Bioanalytical Chemistry, 405 8749-8759, 2013 Peer-reviewed
Application of multiple prompt gamma-ray analysis (MPGA) to geochemical and cosmochemical samples

Y. Oura, R. Watanabe, M. Ebihara, Y. Murakami, Y. Toh, A. Kimura, M. Koizumi, K. Furutaka, M. Oshima, K. Hara …

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, 291(2) 335-339, Feb, 2012 Peer-reviewed
Distribution of artificial radionuclides (Ag-110m, Te-129m, Cs-134, Cs-137) in surface soils from Miyagi Prefecture, northeast Japan, following the 2011 Fukushima Dai-ichi nuclear power plant accident

Watanabe, Takahiro, Tsuchiya, Noriyoshi, Oura, Yasuji, Ebihara, Mitsuru, Inoue, Chihiro, Hirano, Nobuo, Yamada, Ryoichi, Yamasaki, Shin-ichi, Okamoto, Atsushi, Nara, Fumiko Watanabe …

GEOCHEMICAL JOURNAL, 46(4) 279-285, 2012 Peer-reviewed
Radioactivity concentrations of 131I, 134Cs and 137Cs inriver water in the Greater Tokyo Metropolitan area after the Fukushima Daiichi Nuclear Plant accident

Y. Oura, M. Ebihara

Geochem. J., 46 303-309, 2012 Peer-reviewed

Misc.

放射化分析研究のロードマップ

大浦泰嗣, 菊永英寿, 高宮幸一, 藤暢輔, 松江秀明, 松尾基之, 三浦勉

放射化学, (43), 2021
Fluorescence property of radiocesium-bearing microparticles emitted from Fukushima Daiichi Nuclear Accident

阿部善也, 阿部善也, 小野崎晴佳, 石川真帆, 中井泉, 北和之, 五十嵐康人, 五十嵐康人, 大浦泰嗣, 鶴田治雄 …

日本放射化学会討論会(Web), 64th, 2020
福島第一原子力発電所事故直後の大気中放射性ヨウ素(¹³¹I)の動態(その2):原発近傍のSPM測定局における放射性プルーム中の¹³¹Iの推定

鶴田治雄, 海老原充, 大浦泰嗣, 白井直樹, 松崎浩之, 森口祐一, 大原利眞, 中島映至

日本気象学会大会講演予稿集(CD-ROM), (117), 2020
SPMテープろ紙の分析による福島原発事故後初期における放射性物質の関東地方から中部地方への輸送過程の解明

鶴田治雄, 大浦泰嗣, 海老原充, 森口祐一, 大原利眞, 中島映至

大気環境学会年会講演要旨集, 61st (Web), 2020
SPMテープろ紙の分析からわかった事故後初期の大気中放射性物質の動態

鶴田治雄, 大浦泰嗣, 海老原充, 森口祐一, 大原利眞, 中島映至

大気環境学会年会講演要旨集, 61st (Web), 2020
大気輸送沈着モデルを用いた事故後初期の甲状腺被ばく線量推計と課題

大原利眞, 高木麻衣, 森口祐一, 森野悠, 五藤大輔, 大浦泰嗣, 海老原充, 鶴田治雄, 中島映至

大気環境学会年会講演要旨集, 61st (Web), 2020
大気輸送沈着・ばく露評価統合モデルを用いた呼吸由来の甲状腺被ばく線量推計と課題

大原利眞, 森口祐一, 高木麻衣, 森野悠, 五藤大輔, 中山祥嗣, 大浦泰嗣, 海老原充, 鶴田治雄

日本公衆衛生学会総会抄録集, 77th, 2018
放射光X線分析により明らかになった福島第一原発事故由来の放射性粒子の性状および飛散状況

小野崎晴佳, 小野貴大, 飯澤勇信, 阿部善也, 中井泉, 足立光司, 五十嵐康人, 大浦泰嗣, 海老原充, 宮坂貴文 …

X線分析討論会講演要旨集, 53rd 185‐186, Oct 26, 2017
福島第一原発近傍の2地点におけるSPM計使用済みテープろ紙の分析による放射性核種の動態

鶴田治雄, 大浦泰嗣, 海老原充, 大原利眞, 森口祐一, 中島映至

日本地球惑星科学連合大会予稿集(Web), 2017, 2017
SPMテープ濾紙より分離された放射性エアロゾルの放射光X線複合分析による化学・物理的性状解明

小野崎晴佳, 小野貴大, 飯澤勇信, 阿部善也, 中井泉, 足立光司, 五十嵐康人, 大浦泰嗣, 海老原充, 宮坂貴文 …

日本地球惑星科学連合大会予稿集(Web), 2017 ROMBUNNO.MAG34‐02 (WEB ONLY), 2017
SPM計使用済みテープろ紙の分析による福島第一原子力発電所事故直後の大気中放射性物質の時空間分布の総合解析と気象学的考察

鶴田治雄, 大浦泰嗣, 海老原充, 大原利眞, 森口祐一, 中島映至

日本地球惑星科学連合大会予稿集(Web), 2016, 2016
B303 大気循環常時測定局で使用済みテープろ紙の分析による福島第一原子力発電所事故直後における東日本での大気中放射性セシウムの時空間分布(その1)(物質循環II,一般口頭発表)

鶴田治雄, 司馬薫, 山田裕子, 草間優子, 荒井俊昭, 大浦泰嗣, 海老原充, 石本光憲, 勝村庸介, 大原利眞 …

大会講演予講集, 107 285-285, 2015
J‐PARC BL04ANNRIによるTOF‐MPGA法を用いた元素分析

三浦勉, 海老原充, 藤暢輔, 松尾基之, 千葉光一, 木村敦, 大浦泰嗣, 小豆川勝見

日本放射化学会年会・放射化学討論会研究発表要旨集, 2014-58th 81, Sep 11, 2014
D208 β線吸収式大気浮遊粒子状物質自動測定機の使用済みテープ状ろ紙の放射性核種分析(その1) : 福島市内と茨城県南西部での大気中Cs-134とCs-137濃度の2011年3月15-23日の時空間変化(物質循環I,口頭発表)

鶴田治雄, 大浦泰嗣, 海老原充, 大原利眞, 中島映至

大会講演予講集, 103 215-215, 2013
中性子放射化分析による鉄隕石中のMn定量の可能性(平成22年度京都大学原子炉実験所専門研究会,研究紹介)

大浦泰嗣, 新井優花, 今村典央, 海老原充

放射化分析, (28) 13-18, Nov, 2011
S12-04 イトカワ母天体物質の起源(口頭セッション12:はやぶさ,口頭発表)

海老原充, 関本俊, 白井直樹, 浜島靖典, 山本政儀, 熊谷和也, 大浦泰嗣, Ireland Trever, 北島富美雄, 長尾敬介 …

日本惑星科学会秋期講演会予稿集, 2011(2011) 16-16, Oct 23, 2011
八王子,日野,ならびに加須で採取した大気浮遊粒子中の放射能濃度

大浦泰嗣, 松田和秀, 米持真一, 五十嵐康人, 海老原充

日本放射化学会年会・放射化学討論会研究発表要旨集, 2011-55th 25, Sep 20, 2011
Importance of radiochemical neutron activation analysis : in case of the determination of ultra-trace rare earth elements in rock and meteorite samples

AIHARA H., OURA Y., EBIHARA M.

(27) 27-31, May, 2011
Trace Element Analyses of Howardites and Polymict Eucrites using NAA Methods

Wee B. S., Oura Y., Ebihara M.

(26) 6-10, Jul, 2010
Determination of trace lanthanoids in rocks and meteorites by radiochemical neutron activation analysis

(26) 1-2, Jul, 2010

Books and Other Publications

新化学小事典

池田長生, 小熊幸一監修 (Role: Contributor)

三省堂, 2009

Presentations

Application of Multiple Prompt Gamma-ray Analysis (MPGA) to Geochemical and Cos- mochemical Samples

Y.Oura, R. Watanabe, M. Ebihara, Y. Murakami, Y. Toh, A. Kimura, M. Koizumi, K. Furutaka, M. Oshima, K. Hara, T. Kin, S. Nakamura, H. Harada

Thirteenth International Conference on Modern Trends in Activation Analysis, 2011
八王子,日野,ならびに加須で採取した大気浮遊粒子中の放射能濃度

大浦他

第 55 回放射化学討論会, 2011
光量子放射化分析におけるフラックス補正

大浦泰嗣, 海老原充

第 54 回放射化学討論会, 2010
鉄隕石中の宇宙線生成核種Sc-45

大浦泰嗣, 本田雅健, 海老原充

2009 年日本地球化学会年会, 2009
多重即発ガンマ線分析(MPGA)法による宇宙化学的試料の分析

大浦泰嗣, 海老原充, 大島真澄, 藤陽輔, 木村敦, 小泉光生, 古高和禎

第 52 回放射化学討論会, 2008
石質隕石中のCl-36生成率

大浦泰嗣, 山崎俊輔, 橋詰二三雄, 海老原充, 戸崎裕貴, 笹公和, 長島泰夫, 高橋努, 松四雄騎, 玉理美智子, 末木敬介, 松村宏, 別所光太郎, 三浦太一

第 51 回放射化学討論会, 2007
消滅核種の半減期―現状と 53 Mn の再測定―

大浦泰嗣, 海老原充

2006 年日本地球化学会年会, 2006
k0標準化法を用いた中性子放射化分析(II)

大浦泰嗣, 海老原充

第50 回放射化学討論会, 2006
Elemental Compositions of Atmospheric Particulates Collected in Japan in 2002 to 2004.

Y.Oura, H. Iguchi, T. Nagahata, H. Nakamatsu, T. Otoshi, M. Ebihara

Asia-Pasific Syposium on Radiochemistry-05, 2005
Radiochemical Neutron Activation Analysis of Mo and W in Geochemical and Cosmo- chemical Sample with an Enphasis of Correction for Fission Products.

T. Motohashi, Y.Oura, M. Ebihara

Eleventh International Conference on Modern Trends in Activation Analysis, 2004

Professional Memberships

Research Projects

Development of innovative technique for determining elemental and isotopic contents by using high intense pulsed neutrons and continuous neutrons

Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (A), Japan Society for the Promotion of Science, Apr, 2013 - Mar, 2017

Ebihara Mitsuru, KIMURA Atsushi, KIMURA Atsushi, SHOZUGAWA Katsumi, MIURA Tsutomu
Development of technology and radiation measurement in various chemical forms

Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area), Japan Society for the Promotion of Science, Jun, 2012 - Mar, 2017

Shinohara Atsushi
Material evolution caused by catastrophic celestial impacts at the early solar system

Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Japan Society for the Promotion of Science, 2007 - 2009

EBIHAEA Mitsuru, OURA Yasuji, YAMAGUCHHI Akira
Study on the formation process of differentiated meteorites based on platinum group element abundances

Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Japan Society for the Promotion of Science, 2003 - 2005

EBIHARA Mitsuru, OURA Yasuji
study on the environmental and material evolution in the early system solar based on the chemical of composition of meteorites

Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Japan Society for the Promotion of Science, 1999 - 2001

EBIHARA Mitsuru, OURA Yasuji
Accelerator Mass Spectrometry
Determination of cosmogenic radionuclides
Neutron Activation Analysis
Photon Activation Analysis of Cosmochemical Samples
Prompt Gamma-ray Analysis

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