論文 - 山田 椋平
-
INFLUENCE OF SAMPLING FLOW RATE ON THORON EXHALATION RATE MEASUREMENTS BY THE CIRCULATION METHOD
Hosoda Masahiro, Yamada Ryohei, Kobyashi Hiromu, Tamakuma Yuki, Nugraha Eka Djatnika, Hashimoto Hiroki, Negami Ryoju, Kranrod Chutima, Omori Yasutaka, Tazoe Hirofumi, Akata Naofumi, Tokonami Shinji
RADIATION PROTECTION DOSIMETRY 198 ( 13-15 ) 904 - 908 2022年09月
-
Rn-222 and Ra-226 Concentrations in Spring Water and Their Dose Assessment Due to Ingestion Intake
Yamada Ryohei, Hosoda Masahiro, Tabe Tomomi, Tamakuma Yuki, Suzuki Takahito, Kelleher Kevin, Tsujiguchi Takakiyo, Tateyama Yoshiki, Nugraha Eka Djatnika, Okano Anna, Narumi Yuki, Kranrod Chutima, Tazoe Hirofumi, Iwaoka Kazuki, Yasuoka Yumi, Akata Naofumi, Sanada Tetsuya, Tokonami Shinji
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 19 ( 3 ) 1758 - 1758 2022年02月
-
A Preliminary Study of Radon Equilibrium Factor at a Tourist Cave in Okinawa, Japan
Yamada Ryohei, Tamakuma Yuki, Suzuki Takahito, Nakasone Shunya, Shiroma Yoshitaka, Furukawa Masahide, Hashimoto Hiroki, Hosoda Masahiro, Akata Naofumi, Tokonami Shinji
ATMOSPHERE 12 ( 12 ) 1648 - 1648 2021年12月
-
Comprehensive exposure assessments from the viewpoint of health in a unique high natural background radiation area, Mamuju, Indonesia
Nugraha Eka Djatnika, Hosoda Masahiro, Kusdiana, Untara, Mellawati June, Nurokhim, Tamakuma Yuki, Ikram Abarrul, Syaifudin Mukh, Yamada Ryohei, Akata Naofumi, Sasaki Michiya, Furukawa Masahide, Yoshinaga Shinji, Yamaguchi Masaru, Miura Tomisato, Kashiwakura Ikuo, Tokonami Shinji
SCIENTIFIC REPORTS 11 ( 1 ) 14578 2021年07月
-
Discriminative Measurement of Absorbed Dose Rates in Air from Natural and Artificial Radionuclides in Namie Town, Fukushima Prefecture
Ogura Koya, Hosoda Masahiro, Tamakuma Yuki, Suzuki Takahito, Yamada Ryohei, Negami Ryoju, Tsujiguchi Takakiyo, Yamaguchi Masaru, Shiroma Yoshitaka, Iwaoka Kazuki, Akata Naofumi, Shimizu Mayumi, Kashiwakura Ikuo, Tokonami Shinji
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 18 ( 3 ) 978 - 978 2021年02月
-
Long-Term Measurements of Radon and Thoron Exhalation Rates from the Ground Using the Vertical Distributions of Their Activity Concentrations
Modibo Oumar Bobbo, Tamakuma Yuki, Suzuki Takahito, Yamada Ryohei, Zhuo Weihai, Kranrod Chutima, Iwaoka Kazuki, Akata Naofumi, Hosoda Masahiro, Tokonami Shinji
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 18 ( 4 ) 1489 - 1489 2021年02月
-
A unique high natural background radiation area - Dose assessment and perspectives
Hosoda Masahiro, Nugraha Eka Djatnika, Akata Naofumi, Yamada Ryohei, Tamakuma Yuki, Sasaki Michiya, Kelleher Kevin, Yoshinaga Shinji, Suzuki Takahito, Rattanapongs Chanis Pornnumpa, Furukawa Masahide, Yamaguchi Masaru, Iwaoka Kazuki, Sanada Tetsuya, Miura Tomisato, Kusdiana, Iskandar Dadong, Pudjadi Eko, Kashiwakura Ikuo, Tokonami Shinji
SCIENCE OF THE TOTAL ENVIRONMENT 750 142346 - 142346 2021年01月
-
Environmental Monitoring of ¹³⁴Cs and ¹³⁷Cs Levels in Namie Town in 2018 and 2019
Miklós Hegedűs, Thamaborn Ploykrathok, Yoshitaka Shiroma, Kazuki Iwaoka, Ryohei Yamada, Takakiyo Tsujiguchi, Masaru Yamaguchi, Takahito Suzuki, Koya Ogura, Yuki Tamakuma, Hirofumi Tazoe, Naofumi Akata, Masahiro Hosoda, Ikuo Kashiwakura, Shinji Tokonami
Radiation Environment and Medicine 9 ( 2 ) 70 - 78 2020年08月
-
Cesium concentrations in various environmental media at Namie, Fukushima
Hegedus M., Shiroma Y., Iwaoka K., Hosoda M., Suzuki T., Tamakuma Y., Yamada R., Tsujiguchi T., Yamaguchi M., Ogura K., Tazoe H., Akata N., Kashiwakura I, Tokonami S.
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY 323 ( 1 ) 197 - 204 2020年01月
-
COMPARATIVE STUDY ON PERFORMANCE OF VARIOUS ENVIRONMENTAL RADIATION MONITORS
Tamakuma Y., Yamada R., Suzuki T., Kuroki T., Saga R., Mizuno H., Sasaki H., Iwaoka K., Hosoda M., Tokonami S.
RADIATION PROTECTION DOSIMETRY 184 ( 3-4 ) 307 - 310 2019年10月
-
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年07月
-
Study of chemical etching conditions for alpha-particle detection and visualization using solid state nuclear track detectors
Ryohei Yamada, Taiki Odagiri, Kazuki Iwaoka, Masahiro Hosoda, Shinji Tokonami
Radiation Environment and Medicine 8 ( 1 ) 21 - 25 2019年02月
-
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年08月
-
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年02月