Papers - YAMADA RYOHEI
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INFLUENCE OF SAMPLING FLOW RATE ON THORON EXHALATION RATE MEASUREMENTS BY THE CIRCULATION METHOD
Masahiro Hosoda, Ryohei Yamada, Hiromu Kobyashi, Yuki Tamakuma, Eka Djatnika Nugraha, Hiroki Hashimoto, Ryoju Negami, Chutima Kranrod, Yasutaka Omori, Hirofumi Tazoe, Naofumi Akata, Shinji Tokonami
Radiation Protection Dosimetry 198 ( 13-15 ) 904 - 908 2022.9
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222Rn and 226Ra Concentrations in Spring Water and Their Dose Assessment Due to Ingestion Intake
Ryohei Yamada, Masahiro Hosoda, Tomomi Tabe, Yuki Tamakuma, Takahito Suzuki, Kevin Kelleher, Takakiyo Tsujiguchi, Yoshiki Tateyama, Eka Djatnika Nugraha, Anna Okano, Yuki Narumi, Chutima Kranrod, Hirofumi Tazoe, Kazuki Iwaoka, Yumi Yasuoka, Naofumi Akata, Tetsuya Sanada, Shinji Tokonami
International Journal of Environmental Research and Public Health 19 ( 3 ) 1758 - 1758 2022.2
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A Preliminary Study of Radon Equilibrium Factor at a Tourist Cave in Okinawa, Japan
Ryohei Yamada, Yuki Tamakuma, Takahito Suzuki, Shunya Nakasone, Yoshitaka Shiroma, Masahide Furukawa, Hiroki Hashimoto, Masahiro Hosoda, Naofumi Akata, Shinji Tokonami
Atmosphere 12 ( 12 ) 1648 - 1648 2021.12
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Comprehensive exposure assessments from the viewpoint of health in a unique high natural background radiation area, Mamuju, Indonesia
Eka Djatnika Nugraha, Masahiro Hosoda, Kusdiana, Untara, June Mellawati, Nurokhim, Yuki Tamakuma, Abarrul Ikram, Mukh Syaifudin, Ryohei Yamada, Naofumi Akata, Michiya Sasaki, Masahide Furukawa, Shinji Yoshinaga, Masaru Yamaguchi, Tomisato Miura, Ikuo Kashiwakura, Shinji Tokonami
Scientific Reports 11 ( 1 ) 14578 2021.7
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Discriminative Measurement of Absorbed Dose Rates in Air from Natural and Artificial Radionuclides in Namie Town, Fukushima Prefecture
Koya Ogura, Masahiro Hosoda, Yuki Tamakuma, Takahito Suzuki, Ryohei Yamada, Ryoju Negami, Takakiyo Tsujiguchi, Masaru Yamaguchi, Yoshitaka Shiroma, Kazuki Iwaoka, Naofumi Akata, Mayumi Shimizu, Ikuo Kashiwakura, Shinji Tokonami
International Journal of Environmental Research and Public Health 18 ( 3 ) 978 - 978 2021.2
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Long-Term Measurements of Radon and Thoron Exhalation Rates from the Ground Using the Vertical Distributions of Their Activity Concentrations
Oumar Bobbo Modibo, Yuki Tamakuma, Takahito Suzuki, Ryohei Yamada, Weihai Zhuo, Chutima Kranrod, Kazuki Iwaoka, Naofumi Akata, Masahiro Hosoda, Shinji Tokonami
International Journal of Environmental Research and Public Health 18 ( 4 ) 1489 - 1489 2021.2
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A unique high natural background radiation area – Dose assessment and perspectives
Masahiro Hosoda, Eka Djatnika Nugraha, Naofumi Akata, Ryohei Yamada, Yuki Tamakuma, Michiya Sasaki, Kevin Kelleher, Shinji Yoshinaga, Takahito Suzuki, Chanis Pornnumpa Rattanapongs, Masahide Furukawa, Masaru Yamaguchi, Kazuki Iwaoka, Tetsuya Sanada, Tomisato Miura, Kusdiana, Dadong Iskandar, Eko Pudjadi, Ikuo Kashiwakura, Shinji Tokonami
Science of The Total Environment 750 142346 - 142346 2021.1
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Environmental Monitoring of <sup>134</sup>Cs and <sup>137</sup>Cs Levels in Namie Town in 2018 and 2019
Hegedűs Miklós, Ploykrathok Thamaborn, Shiroma Yoshitaka, Iwaoka Kazuki, Yamada Ryohei, Tsujiguchi Takakiyo, Yamaguchi Masaru, Suzuki Takahito, Ogura Koya, Tamakuma Yuki, Tazoe Hirofumi, Akata Naofumi, Hosoda Masahiro, Kashiwakura Ikuo, Tokonami Shinji
Radiation Environment and Medicine 9 ( 2 ) 70 - 78 2020.8
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Cesium concentrations in various environmental media at Namie, Fukushima
M. Hegedűs, Y. Shiroma, K. Iwaoka, M. Hosoda, T. Suzuki, Y. Tamakuma, R. Yamada, T. Tsujiguchi, M. Yamaguchi, K. Ogura, H. Tazoe, N. Akata, I. Kashiwakura, S. Tokonami
Journal of Radioanalytical and Nuclear Chemistry 323 ( 1 ) 197 - 204 2020.1
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COMPARATIVE STUDY ON PERFORMANCE OF VARIOUS ENVIRONMENTAL RADIATION MONITORS
Y. Tamakuma, R. Yamada, T. Suzuki, T. Kuroki, R. Saga, H. Mizuno, H. Sasaki, K. Iwaoka, M. Hosoda, S. Tokonami
Radiation Protection Dosimetry 184 ( 3-4 ) 307 - 310 2019.10
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A portable radioactive plume monitor using a silicon photodiode
Yuki Tamakuma , Ryohei Yamada , Kazuki Iwaoka , Masahiro Hosoda , Tomohiro Kuroki , Hiroyuki Mizuno , Koji Yamada , Masahide Furukawa , Shinji Tokonami
Perspectives in Science 12 100414 - 100414 2019.7
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Study of Chemical Etching Conditions for Alpha-particle Detection and Visualization Using Solid State Nuclear Track Detectors
Yamada Ryohei, Odagiri Taiki, Iwaoka Kazuki, Hosoda Masahiro, Tokonami Shinji
Radiation Environment and Medicine 8 ( 1 ) 21 - 25 2019.2
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Measurement system for alpha and beta emitters with continuous air sampling under different exposure situations
Yamada Ryohei, Tamakuma Yuki, Iwaoka Kazuki, Hosoda Masahiro, Shiroma Yoshitaka, Akata Naofumi, Mizuno Hiroyuki, Yamada Kouji, Kuroki Tomohiro, Tokonamia Shinji
APPLIED RADIATION AND ISOTOPES 126 79 - 82 2017.8
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Characteristic of thoron (Rn-220) in environment
Hosoda Masahiro, Kudo Hiromi, Iwaoka Kazuki, Yamada Ryohei, Suzuki Takahito, Tamakuma Yuki, Tokonami Shinji
APPLIED RADIATION AND ISOTOPES 120 7 - 10 2017.2