論文 - 山田 椋平
-
Optimization and validation of combustion-based analysis of organically bound tritium in pine needles
Kuwata, H; Kheamsiri, K; Yamada, R; Tamari, T; Kakiuchi, H; Tanaka, M; Akata, N
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY 334 ( 5 ) 3185 - 3192 2025年05月
-
Fukushima's Tap and Groundwater a Decade after the Nuclear Accident with Radiocesium, Tritium, and Radon
Anderson, D; Oda, Y; Taira, Y; Omori, Y; Tazoe, H; Akata, N; Kranrod, C; Yamada, R; Kuwata, H; Tamakuma, Y; Kudo, H; Osanai, M; Nishimura, N; Yasuoka, Y; Sanada, T; Hosoda, M; Tokonami, S
ENVIRONMENTAL SCIENCE & TECHNOLOGY 59 ( 10 ) 4906 - 4914 2025年03月
-
Structure shielding of school and gymnasium buildings against fallout gamma radiation from the Fukushima Daiichi Nuclear Power Plant accident
Taoka, M; Kudo, R; Yamada, R; Omori, Y; Tanaka, K; Hosoda, M; Tokonami, S
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 288 117394 2024年12月
-
Atmospheric concentrations of <SUP>7</SUP>Be and <SUP>210</SUP>Pb in weekly aerosols at Hirosaki, a heavy snowfall area in Japan
Kheamsiri, K; Modibo, OB; Hadi, BSW; Kuwata, H; Yamada, R; Kranrod, C; Akata, N
RADIATION PROTECTION DOSIMETRY 200 ( 16-18 ) 1782 - 1786 2024年11月
-
Tritium determination in natural water samples in Fukushima from 2022 to 2023 using an ultra-low-level tritium counting system
Hegedus, M; Kuwata, H; Kheamsiri, K; Novák, M; Yamada, R; Akata, N; Kovács, T
RADIATION PROTECTION DOSIMETRY 200 ( 16-18 ) 1845 - 1849 2024年11月
-
Tritium concentration in monthly precipitation in Okinawa and Kagoshima, southern Japan
Akata, N; Ohno, K; Kuwata, H; Kheamsiri, K; Yoshinaka, Y; Yamada, R; Kitayama, Y; Aizawa, S; Nakasone, S; Ishimine, A; Tanaka, M; Shiroma, Y; Tokonami, S; Furukawa, M
RADIATION PROTECTION DOSIMETRY 200 ( 16-18 ) 1792 - 1796 2024年11月
-
Evaluation of combustion system for organically bound tritium analysis using dried fish samples
Kuwata, H; Yamada, R; Kheamsiri, K; Kakiuchi, H; Tamari, T; Shima, N; Akata, N
RADIATION PROTECTION DOSIMETRY 200 ( 16-18 ) 1807 - 1812 2024年11月
-
Effect of sampling face velocity on the ultrafine particle surface collection efficiency of a cellulose membrane filter and a cellulose-glass fiber filter for environmental airborne radioactivity monitoring
Kiso, M; Taoka, M; Sampei, A; Hashimoto, H; Abe, Y; Oda, Y; Omori, Y; Yamada, R; Hosoda, M; Kranrod, C; Ishikawa, T; Tokonami, S
RADIATION PROTECTION DOSIMETRY 200 ( 16-18 ) 1671 - 1675 2024年11月
-
Characteristics of tritium, stable isotopes and chemical components in monthly precipitation at Hiroshima, Japan
Yamada, R; Kuwata, H; Kheamsiri, K; Ohno, K; Kitayama, Y; Yoshinaka, Y; Yoshinaga, S; Kurita, N; Akata, N
RADIATION PROTECTION DOSIMETRY 200 ( 16-18 ) 1797 - 1801 2024年11月
-
Behavior of radioactive cesium concentration for 13 years after FDNPP accident at Koriyama campus of Nihon University, Fukushima, Japan
Suzuki, R; Okuyama, K; Chiba, K; Hashimoto, T; Katsumata, N; Ukitsu, A; Kheamsiri, K; Yamada, R; Akata, N
RADIATION PROTECTION DOSIMETRY 200 ( 16-18 ) 1835 - 1839 2024年11月
-
Performance Test of Improved Commercially Available Tritium Enrichment System: Toward Rapid and High Efficiency Enrichment
Naofumi Akata, Kazusa Okada, Nao Otashiro, Haruka Kuwata, Khemruthai Kheamsiri, Kaho Ohno, Yukiko Yoshinaka, Ryohei Yamada, Masahiro Tanaka
Radiation Environment and Medicine 13 ( 2 ) 60 - 64 2024年08月
-
Tissue-free water tritium and non-exchangeable organically bound tritium concentrations in fish near coastline during and after operation of Japan's first nuclear fuel reprocessing facility
Naofumi Akata, Donovan Anderson, Hideki Kakiuchi, Ryohei Yamada, Hidenao Hasegawa, Shinji Ueda
Science of The Total Environment 947 174404 - 174404 2024年07月
-
Tritium concentration in bottled drinking water and internal dose assessment
Kheamsiri, K; Akata, N; Kuwata, H; Tanaka, M; Hosoda, M; Sasaki, M; Shiroma, Y; Tokonami, S; Yamada, R; Kranrod, C; Iwaoka, K; Kovács, T
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY 333 ( 5 ) 2597 - 2603 2024年05月
-
Changes in Particulate Matter (PM2.5 and PM10) Concentrations and Ambient Dose Equivalent Rates at Different Altitudes in Chiang Mai, Thailand
Chutima Kranrod, Tarika Thumviji, Ryohei Yamada, Worawat Poltabtim, Mizuki Kiso, Sompong Sriburee, Siriprapa Somboon, Kewalin Ruktinnakorn, Shinji Tokonami
Radiation Environment and Medicine 13 ( 1 ) 28 - 34 2024年02月
-
Temporal variation of tritium concentration in monthly precipitation collected at a Difficult-to-Return Zone in Namie Town, Fukushima Prefecture, Japan
Yamada, R; Hasegawa, H; Akata, N; Kakiuchi, H; Ochiai, S; Kuwata, H; Kheamsiri, K; Tokonami, S; Ueda, S
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 31 ( 5 ) 7818 - 7827 2024年01月
-
Calibration experiments for radon in drinking water measurements using portable-type electrostatic-collection radon monitors
Hosoda, M; Omori, Y; Hashimoto, H; Matsumoto, M; Yasuoka, Y; Sanada, T; Oda, Y; Kiso, M; Sampei, A; Kranrod, C; Tazoe, H; Akata, N; Taira, Y; Tamakuma, Y; Yamada, R; Kudo, H; Shimizu, M; Tokonami, S
RADIATION PROTECTION DOSIMETRY 199 ( 18 ) 2203 - 2206 2023年11月
-
Tritium Concentration in Natural SpringWater Collected at Hirosaki, Japan
Akata Naofumi, Okada Kazusa, Kuwata Haruka, Kheamsiri Khmruthai, Hosoda Masahiro, Tazoe Hirofumi, Yasuhara Ryo, Sugihara Shinji, Yamada Ryohei, Tanaka Masahiro
PLASMA AND FUSION RESEARCH 18 ( 0 ) 2405030 - 2405030 2023年04月
-
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