日本地球化学会

Tritium concentration in bottled drinking water and internal dose assessment

Khemruthai Kheamsiri, Naofumi Akata, Haruka Kuwata, Masahiro Tanaka, Masahiro Hosoda, Michiya Sasaki, Yoshitaka Shiroma, Shinji Tokonami, Ryohei Yamada, Chutima Kranrod, Kazuki Iwaoka, Tibor Kovάcs

Journal of Radioanalytical and Nuclear Chemistry   2023.7

Environmental radioactivity measurements in soil using inductively coupled plasma mass spectrometry and gamma-ray spectrometry in various areas in Cameroon

Modibo Oumar Bobbo, Guosheng Yang, Saïdou, Hirofumi Tazoe, Naofumi Akata, Chutima Kranrod, Masahiro Hosoda, Shinji Tokonami

Journal of Radioanalytical and Nuclear Chemistry   2023.7

Efforts to Bioassay for Internal Radiation Dose Assessment at Advanced Radiation Emergency Medical Support Center, Hirosaki University

YAMADA Ryohei, OSANAI Osamu, AKATA Naofumi, TAZOE Hirofumi, TSUJIGUCHI Takakiyo, ITO Katsuhiro, HANADA Hiroyuki, TOKONAMI Shinji, KASHIWAKURA Ikuo

Japanese Journal of Health Physics   58 ( 1 )   27 - 30   2023.4

Tritium Concentration in Natural Spring Water Collected at Hirosaki, Japan

Naofumi AKATA, Kazusa OKADA, Haruka KUWATA, Khmruthai KHEAMSIRI, Masahiro HOSODA, Hirofumi TAZOE, Ryo YASUHARA, Shinji SUGIHARA, Ryohei YAMADA, Masahiro TANAKA

Plasma and Fusion Research   18   2405030 - 2405030   2023.4

Spatial variations of 10Be in surface snow along the inland traverse route of Japanese Antarctic Research Expeditions

Kazuho Horiuchi, Shinji Kato, Kou Ohtani, Naoyuki Kurita, Shun Tsutaki, Fumio Nakazawa, Hideaki Motoyama, Kenji Kawamura, Hirofumi Tazoe, Naofumi Akata, Takeyasu Yamagata, Hiroyuki Matsuzaki

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms   533   61 - 65   2022.12

LEVELS OF ATMOSPHERIC TRITIUM IN THE SITE OF FUSION TEST FACILITY

Masahiro Tanaka, Chie Iwata, Miki Nakada, Akemi Kato, Naofumi Akata

Radiation Protection Dosimetry   198 ( 13-15 )   1084 - 1089   2022.9

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

TRITIUM CONCENTRATION IN MONTHLY PRECIPITATION NEAR THE FUSION TEST FACILITY IN JAPAN BEFORE AND AFTER THE DEUTERIUM PLASMA EXPERIMENT

Naofumi Akata, Chie Iwata, Miki Nakada, Akemi Kato, Kazusa Okada, Haruka Kuwata, Shunya Nakasone, Masahiro Tanaka

Radiation Protection Dosimetry   198 ( 13-15 )   976 - 984   2022.9

TEMPORAL VARIATION OF POST-ACCIDENT 129I IN ATMOSPHERIC PARTICULATE MATTER COLLECTED FROM AN EVACUATED AREA OF FUKUSHIMA PREFECTURE, JAPAN.

Hasegawa H, Kakiuchi H, Ochiai S, Akata N, Ueda S, Tokonami S

Radiation protection dosimetry   198 ( 13-15 )   1143 - 1149   2022.9

SPECIATION OF CESIUM ISOTOPES IN RIVER WATER: A CASE STUDY IN THE UKEDO RIVER

Hirofumi Tazoe, Ryo Tachizaki, Yuto Tomisaka, Haruka Kuwata, Naofumi Akata

Radiation Protection Dosimetry   198 ( 13-15 )   1077 - 1083   2022.9

PERFORMANCE EVALUATION OF COMMERCIAL SCINTILLATION COCKTAILS FOR LOW-LEVEL TRITIUM COUNTING BY HIGH-CAPACITY LIQUID SCINTILLATION COUNTER

Haruka Kuwata, Hirofumi Tazoe, Chutima Kranrod, Kenso Fujiwara, Motoki Terashima, Makoto Matsueda, Shigekazu Hirao, Naofumi Akata

Radiation Protection Dosimetry   198 ( 13-15 )   1014 - 1018   2022.9

Analysis of Factors Contributing to the Increase in 7Be Activity Concentrations in the Atmosphere

Yukinori Narazaki, Akihiro Sakoda, Naofumi Akata, Hisanori Itoh, Noriyuki Momoshima

International Journal of Environmental Research and Public Health   19 ( 16 )   10128 - 10128   2022.8

Monthly Precipitation Collected at Hirosaki, Japan: Its Tritium Concentration and Chemical and Stable Isotope Compositions

Haruka Kuwata, Naofumi Akata, Kazusa Okada, Masahiro Tanaka, Hirofumi Tazoe, Naoyuki Kurita, Nao Otashiro, Ryoju Negami, Takahito Suzuki, Yuki Tamakuma, Yoshitaka Shiroma, Masahiro Hosoda

Atmosphere   13 ( 5 )   848 - 848   2022.5

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

High Indoor Radon Concentration Observed in Yomitan-son,Okinawa Prefecture, Southwestern Part of Japan

Masahide Furukawa, Yasutaka Omori, Nagi Masuda, Yuki Tamakuma, Takahito Suzuki, Mika Obata, Reina Shingaki, Syunya Nakasone, Akinobu Ishimine, Kaori Nakamura, Yoshitaka Shiroma, Masahiro Hosoda, Naofumi Akata, Shinji Tokonami

Radiation Enviroment and Medicine   11 ( 1 )   16 - 20   2022.2

Rapid Chemical Separation Protocol for Optimized 90Sr Determination by ICP-MS in Water Samples for Radiological Incident

Hirofumi Tazoe, Yuto Tomisaka, Naofumi Akata, Ben Russell, Peter Ivanov, Masahiro Hosoda, Shinji Tokonami

Radiation Enviroment and Medicine   11 ( 1 )   7 - 15   2022.2

Heavy Metal Assessments of Soil Samples from a High Natural Background Radiation Area, Indonesia

Eka Djatnika Nugraha, June Mellawati, Wahyudi, Chutima Kranrod, Makhsun, Hirofumi Tazoe, Haeranah Ahmad, Masahiro Hosoda, Naofumi Akata, Shinji Tokonami

Toxics   10 ( 1 )   39 - 39   2022.1

Characterization of atmospheric tritiated water concentration in the vicinity of the fukushima daiichi nuclear power plant

Shigekazu Hirao, Hideki Kakiuchi, Naofumi Akata, Toshiya Tamari, Shinji Sugihara, Nagayoshi Shima, Sumi Yokoyama, Masahiro Tanaka

Journal of Radioanalytical and Nuclear Chemistry   2022

沖縄島における降水中のトリチウム濃度と水素・酸素安定同位体比 及び主要イオン濃度との関係

仲宗根峻也, 中村夏織, 石津裕二, 城間吉貴, 田中将裕, 赤田尚史, 伊志嶺聡伸, 石川義朗, 柿内秀樹, 真田哲也, 古川雅英

保健物理学会誌   56 ( 4 )   265 - 279   2021.12

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

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 )   2021.12

Reassessment of the radiocesium resuspension flux from contaminated ground surfaces in East Japan

Mizuo Kajino, Akira Watanabe, Masahide Ishizuka, Kazuyuki Kita, Yuji Zaizen, Takeshi Kinase, Rikuya Hirai, Kakeru Konnai, Akane Saya, Kazuki Iwaoka, Yoshitaka Shiroma, Hidenao Hasegawa, Naofumi Akata, Masahiro Hosoda, Shinji Tokonami, Yasuhito Igarashi

Atmospheric Chemistry and Physics   22   783 - 803   2021.9

A unique high natural background radiation area in Indonesia: a brief review from the viewpoint of dose assessments

Eka Djatnika Nugraha, Masahiro Hosoda, Yuki Tamakuma, Chutima Kranrod, June Mellawati, Naofumi Akata, Shinji Tokonami

Journal of Radioanalytical and Nuclear Chemistry   2021.7

Isotope and chemical composition of monthly precipitation collected at Sapporo, northern part of Japan during 2015-2019

Naofumi Akata, Hideki Kakiuchi, Masahiro Tanaka, Yoshio Ishikawa, Naoyuki Kurita, Masahide Furukawa, Miklós Hegedűs, Tibor Kovács, Maksym Gusyev, Tetsuya Sanada

Fusion Engineering and Design   168   2021.7

Support activities in Namie Town, Fukushima undertaken by Hirosaki University

Shinji Tokonami, Tomisato Miura, Naofumi Akata, Hirofumi Tazoe, Masahiro Hosoda, Kranrod Chutima, Hiromi Kudo, Koya Ogura, Yohei Fujishima, Yuki Tamakuma, Mayumi Shimizu, Kazutaka Kikuchi, Ikuo Kashiwakura

Annals of the ICRP   014664532110068 - 014664532110068   2021.6

核融合科学研究所における松葉及び土壌中の 環境放射性物質のモニタリング

中田実希, 田中将裕, 赤田尚史, 加藤明己, 岩田智恵, 林浩

保健物理学会誌   56 ( 2 )   66 - 74   2021.6

210Pb and Major Ion Concentrations in Aerosols Collected in Qingdao, a Seaside Area of China

O B Modibo, S Tokonami, M Hosoda, Y Tamakuma, H Jun, M Hegedűs, E D Nugraha, Saïdou, H Tazoe, N Akata1, Y Kanai, F Yanagisawa, R Zhang

Radiation Environment and Medicine   10 ( 1 )   18 - 25   2021.2

Long-term measurements of radon and thron exhalation rates from the ground using the vertical distributions of their acitivity concentrations

Modibo, O.B.; Tamakuma, Y.; Suzuki, T.; Yamada, R.; Zhuo,W.; Kranrod, C.; Iwaoka, K.; Akata, N.; Hosoda, M.; Tokonami, S.

Int. J. Environ. Res. Public Health   18 ( 1849 )   2021.2

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

Simple Pretreatment Method for Tritium Measurement inEnvironmental Water Samples using a Liquid Scintillation Counter

S NAKASONE, S YOKOYAMA, T TAKAHASHI, M OTA, H KAKIUCHI, S SUGIHARA, S HIRAO, N MOMOSHIMA, T TAMARI, N SHIMA, M ATARASHI-ANDOH, S FUKUTANI, K NAKAMURA, A ISHIMINE, M FURUKAWA, M TANAKA, N AKATA

Plasma and Fusion Research   16   2405035-1 - 2405035-5   2021.2

Simple Pretreatment Method for Tritium Measurement in Environmental Water Samples using a Liquid Scintillation Counter

NAKASONE Shunya, SHIMA Nagayoshi, ATARASHI-ANDOH Mariko, FUKUTANI Satoshi, NAKAMURA Kaori, ISHIMINE Akinobu, FURUKAWA Masahide, TANAKA Masahiro, AKATA Naofumi, YOKOYAMA Sumi, TAKAHASHI Tomoyuki, OTA Masakazu, KAKIUCHI Hideki, SUGIHARA Shinji, HIRAO Shigekazu, MOMOSHIMA Noriyuki, TAMARI Toshiya

Plasma and Fusion Research   16 ( 0 )   2405035-1 - 2405035-5   2021.2

Temporal and Spatial Variation of Radon Concentrations in Environmental Water from Okinawa Island, Southwestern Part of Japan

Shunya Nakasone, Akinobu Ishimine, Shuhei Shiroma, Natsumi Masuda, Kaori Nakamura, Yoshitaka Shiroma, Sohei Ooka, Masahiro Tanaka, Akemi Kato, Masahiro Hosoda, Naofumi Akata, Yumi Yasuoka, Masahide Furukawa

Int. J. Environ. Res. Public Health   18   998   2021.1

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

Int. J. Environ. Res. Public Health   18   978   2021.1

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

Characterization of atmospheric 210Pb concentration and its relation to major ion species at Tsukuba, Japan

Naofumi Akata, Chie Iwata, Miki Nakada, Masahiro Tanaka, Hideki Kakiuchi, Tibor Kovács, Fumitaka Yanagisawa, Yutaka Kanai

Journal of Radioanalytical and Nuclear Chemistry   2021.1

沖縄島における環境水中トリチウム濃度の変動とその分布

仲宗根峻也、伊志嶺聡伸、中村夏織、石津裕二、城間吉貴、田中将裕、赤田尚史、柿内秀樹、真田哲也、古川雅英

Proceedings of the 21st Workshop on Environmental Radioactivity   21   198 - 203   2020.12

Natural Radioactivity of Laterite and Volcanic Rock Sample for Radioactive

Ilsa Rosianna, Eka Djatnika Nugraha, Heri Syaeful, Sugili Putra, Masahiro Hosoda, Naofumi Akata, Shinji Tokonami

Geosciences   2020.9

Low-volume Electrolytic Enrichment for Tritium Measurement Using Improved Solid Polymer Electrolyte System at NIFS and Its Application

Naofumi Akata, Chie Iwata, Akemi Kato, Masahiro Tanaka, Hirofumi Tazoe, Nagayoshi Shima, Kimpei Ichiyanagi, Miklós Hegedűs, Gergő Bátor, Tibor Kovács, Hideki Kakiuchi

Radiation Environment and Medicine   9 ( 2 )   93 - 97   2020.8

Caesium Retention Characteristics of Knifc–Pan Resin from River Water

Miklós Hegedűs, Hirofumi Tazoe, Guosheng Yang, Yuki Tamakuma, Masahiro Hosoda, Naofumi Akata, Shinji Tokonami

Radiation Protection Dosimetry   190 ( 3 )   320 - 323   2020.8

Dose Assessment of Radium-226 in Drinking Water from Mamuju, a High Background Radiation Area of Indonesia

Eka Djatnika Nugraha, Masahiro Hosoda, Kusdiana, Ilma D Winarni, Ariska Prihantoro, Takahito Suzuki, Yuki Tamakuma, Naofumi Akata, Shinji Tokonami

Radiation Environment and Medicine   9 ( 2 )   79 - 83   2020.8

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   2020.8

Assessment of Radiation Dose from the Consumption of Bottled Drinking Water in Japan

Aoife Kinahan, Masahiro Hosoda, Kevin Kelleher, Takakiyo Tsujiguchi, Naofumi Akata, Shinji Tokonami, Lorraine Currivan, Luis León Vintró

International Journal of Environmental Research and Public Health   17 ( 14 )   4992 - 4992   2020.7

Preliminary investigation of pretreatment methods for liquid scintilation measurements of environmental water samples using ion exchange resins

Nakasone, S., Yokoyama, S., Takahashi, T., Ota, M., Kakiuchi, H., Sugihara, S., Hirao, S., Momoshima, N., Tamari, T., Shima, N., Atarashi-Andoh, M., Fukutani, S., Ishimine, A., Furukawa, M., Tanaka, M., Akata, N.

Plasma and Fusion Research   15   2020.5

Monitoring and Recovery of Tritium in Fusion Test Facility

Masahiro Tanaka,Naoyuki Suzuki,Hiromi Kato,Chie Iwata,Naofumi Akata,Hiroshi Hayashi,Hitoshi Miyake

FUSION SCIENCE AND TECHNOLOGY   76   475 - 480   2020.5

External radiation exposure to the public using car-borne survey method in the uranium and Thorium bearing region of Lolodorf, Cameroon

Guillaume Samuel Bineng, Saïdou, Masahiro Hosoda, Yvette Flore Tchuente Siaka, Naofumi Akata, Simplice Feutseu Talla, Patrice Abiama, Shinji Tokonami

Radiation Environment and Medicine   9   13 - 20   2020.3

Cesium concentrationsin various environmental media at Namie, Fukusjima

M.Hegedus, 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 (2019)   323 ( 1 )   197 - 204   2020.1

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   197 - 204   2019.11

THE IMPACT ON THE EYE LENS OF RADIATION EMITTED BY NATURAL RADIONUCLIDES (LEAD-210) PRESENT IN RADIATION PROTECTION GLASSES

Minoru Osanai, Kohsei Kudo, Masahiro Hosoda, Hirofumi Tazoe, Naofumi Akata, Maiko Kitajima, Megumi Tsushima, Nobuhiro Komiya, Masaya Kudo, Takakiyo Tsujiguchi, Masafumi Takagi, Yoichiro Hosokawa, Yoko Saito

Radiation Protection Dosimetry   185   1 - 9   2019.11

岐阜県土岐市における７Beの大気中濃度および降下量の特徴

中田実希，赤田尚史，小林真，加藤明巳，岩田智恵，林浩

Proceedings of the 20th Workshop on Environmental Radioactivity   20   201 - 206   2019.11

External Radiation Exosure to the Public Using Car-borne Survey Method in the Uranium a d Thorium Bearing of Lolodorf, Cameroon

Guillaume Samuel Bineng, Saidou, Masahiro Hosoda, Yvette Flore Tchuente Siaka, Naofumi Akata, Simplice Feutseu Talla, Ele Abiama, Shinji Tokonami

Radiation Environment and Medicine 2020,   9 ( 1 )   13 - 20   2019.11

TRITIUM, HYDROGEN AND OXYGEN ISOTOPE COMPOSITIONS IN MONTHLY PRECIPITATION SAMPLES COLLECTED AT TOKI, JAPAN

N Akata, H Hasegawa, S Sugihara, M Tanaka, M Furukawa, N kurita, T Kcvacs, Y shiroma, H kakiuchi

Radiation Protection Dosimetry   184   338 - 341   2019.10

A SIMULATION STUDY OF DEPOSITION PARAMETERS FOR 129I DISCHARGED FROM THE ROKKASHO REPROCESSING PLANT

Koichi Abe, Hidenao Hasegawa, Naofumi Akata, Hideki Kakiuchi, Jing-Hsien Chiang, Hiroji Suwa, Shun'ichi Hisamatsu

Radiation Protection Dosimetry   184   376 - 379   2019.10

NATURAL RADIATION EXPOSURE TO THE PUBLIC IN MINING AND ORE BEARING REGIONS OF CAMEROON

Saïdou, Shinji Tokonami, Masahiro Hosoda, Ndjana Nkoulou, II Joseph Emmanuel, Naofumi Akata, Tchuente Siaka, Yvette Flore, Oumar Bobbo Modibo, Bineng Guillaume Samuel, Takoukam Soh, Serge Didier

Radiation Protection Dosimetry   184   391 - 396   2019.10

EVALUATIONS OF INVENTORY AND ACTIVITY CONCENTRATION OF RADIOCESIUM IN SOIL AT A RESIDENTIAL HOUSE 3 YEARS AFTER THE FUKUSHIMA NUCLEAR ACCIDENT

M Hosoda, W Hozumi, N Akata, A Endo, K Kelleher, K Yamanouchi, Y Imajo, T Fukuhara, Y Shiroma, K Iwaoka, S Tokonami

Radiation Protection Dosimetry   184   518 - 522   2019.10

CHANGES OF ABSORBED DOSE RATE IN AIR BY CAR-BORNE SURVEY IN NAMIE TOWN, FUKUSHIMA PREFECTURE AFTER THE FUKUSHIMA DAIICHI NUCLEAR POWER PLANT ACCIDENT

Y Shiroma, M Hosoda, K Iwaoka, M Hegedűs, H Kudo, T Tsujiguchi, M Yamaguchi, N Akata, I Kashiwakura, S Tokonami

Radiation Protection Dosimetry   184   527 - 530   2019.10

Isotope composition and chemical species of monthly precipitation collected at the site of a fusion test facility in Japan

Akata, N, Tanaka, M, Iwata, C, Kato, A, Nakada, M, Kovacs, T, Kakiuchi, H

International Journal of Environmental Research and Public Health   16   1 - 11   2019.10

RECENT TRITIUM CONCENTRATION OF MONTHLY PRECIPITATION IN JAPAN

S Nakasone, A Ishimine, Y Ishizu, Y Shiroma, M Tanaka, N Akata, H Kakiuchi, T Sanada, M Furukawa

Radiation Protection Dosimetry   184   334 - 337   2019.10

ENVIRONMENTAL TRITIUM AROUND A FUSION TEST FACILITY

Masahiro Tanaka, Naofumi Akata, Chie Iwata

Radiation Protection Dosimetry   184   324 - 327   2019.10

Measurement of absorbed dose rate in air at the first deuterium plasma experiment in LHD

Shiroma, Y. Hirao, S, Akata, N, Furukawa, M, Miyake, H, Saze, T, Tanaka, M

Plasma and Fusion Research   14   1305130   2019.7

Development of field estimation technique and improvement of environmental tritium behavior model

Sumi Yokoyama, Tomoyuki Takahashi, Masakazu Ota, Hideki Kakiuchi, Shinji Sugihara, Sigekazu Hirao, Noriyuki Momoshima, Toshiya Tamari, Nagayoshi Shima, Mariko Atarashi-Andoh, Satoshi Fukutani, Syunya Nakasone, Masahide Furukawa, Masahiro Tanaka, Naofumi Akata

Plasma and Fusion Research   14   2019.6

Radiation control in LHD and radiation shielding capability of the torus hall during first campaign of deuterium experiment

Makoto Kobayashi, Takuya Saze, Hitoshi Miyake, Kunihiro Ogawa, Mitsutaka Isobe, Masahiro Tanaka, Naofumi Akata, Kiyohiko Nishimura, Hiroshi Hayashi, Takashi Kobuchi, Mitsuhiro Yokota, Masaki Osuna, Hideya Nakanishi, Masaki Osakabe, Yasuhiko Takeiri

Fusion Engineering and Design   143   180 - 187   2019.6

Determination of non‑exchangeable organically bound tritium concentration in reference material of pine needles (NIST 1575a)

AKATA Naofumi, KAKIUCHI Hideki, SHIMA Nagayoshi, TAMARI Toshiya, Kovacs Tibor

Journal of Radioanalytical and Nuclear Chemistry   319 ( 3 )   1359 - 1363   2019.3

Concentrations of iodine-129 in livestock, agricultural, and fishery products around spent nuclear fuel reprocessing plant in Rokkasho, Japan, during and after its test operation

Yuhi Sato, Hideki Kakiuchi, Shinji Ueda, Naofumi Akata, Shun'ichi Hisamatsu

Environmental Monitoring and Assessment   191   2019.2

Determination of Non-Exchangeable Organically Bound Tritium concentration in reference material of pine needles (NIST 1575a)

Naofumi Akata, Hideki Kakiuchi, Nagayoshi Shima, Toshiya Tamari, Tibor Kovacs

Journal of Radioanalytical and Nuclear Chemistry   319 ( 3 )   1359 - 1363   2019.1

Comparative study on performance using five different gamma-ray spectrometers for thyroid monitoring under nuclear emergency situations

Hosoda, M, Iwaoka, K, Tokonami, S, Tamakuma, Y, Shiroma, Y, Fukuhara, T, Imajyo, Y, Taniguchi, J, Akata, N, Osanai, M, Tsujiguchi, T, Yamaguchi, M, Kashiwakura, I

Health Physics   116   81 - 87   2019.1

Evaluating anthropogenic and environmental tritium effects using precipitation and Hokkaido snowpack at selected coastal location in Asia

Gusyev, M.A., Morgenstern, U., Nishihara, T., Hayashi, T., Akata, N., Ichiyanagi, K., Sugimoto, A., Hasegawa, A., Stewart, M.K.

Science of the Total environment   659   1307 - 1321   2019.1

Natural radiation exposure to the public in the uranium bearing region of Poli, Cameroon: From radioactivity measurements to external and inhalation dose assessment

Saïdou, Tokonami, S., Hosoda, M., Flore, T., Joseph, N., Akata, N., Bobbo, O., Joseph, P.

Journal of Geochemical Exploration   205   16350   2019.1

Expiratory testing as a simple and effective bioassay method for screening workers for tritium exposure in fusion test facilities

N. Akata, C. Iwata, H. Miyake, M. Tanaka

Plasma and Fusion Research   13   1305076   2018.6

沖縄島における陸水中トリチウム濃度

仲宗根峻也，石津裕二，池本憲弘，城間吉貴，赤田尚史，田中将裕，古川雅英

保健物理   53   65 - 71   2018.6

Development of rapid sampling system of atmospheric water vapor for tritium measurement

Akata, N, Kakiuchi, H, Tanaka, M, Shima, N, Shiroma, Y, Tokonami, S, Hosoda, M, Ishikawa, Y, Furukawa, M, Sanada, T

Plasma and Fusion Research   13   3405064   2018.6

Air absorbed dose rate measurements and external dose assessment by car-norne survey in the gold mining areas of Betare-Oya, Eastern Cameroon, Jpn

Engola, L.N, Ndjana Nkoulou II, J. E, Hosoda, M, Bongue, D, Saidou, Akata, N, Heya, R. K, Kwato Njock, M. G, Tokonami, S

Health Phys   53   5 - 11   2018.6

Concentrations of chemical components, including 210Pb, present in aerosols collected at Naha, Okinawa Prefecture, a sub-tropical region of Japan

Akata, N., Shiroma, Y., Furukawa, M., Kato, A., Kakiuchi, H., Hosoda, M., Kanai, Y., Yanagisawa, F.

Japanese Journal of Health Physics   53   17 - 22   2018.3

Air absorbed dose rate measurements and external dose assessment by car-norne survey in the gold mining areas of Betare-Oya, Eastern Cameroon

Engola, L.N., Ndjana Nkoulou II, J. E., Hosoda, M., Bongue, D., Saidou, Akata, N., Heya, R. K., Kwato Njock, M. G., Tokonami, S.

Jpn. J. Health Phys.   53   5 - 11   2018.3

Atmospheric concentration and deposition flux of cosmogenic beryllium-7 at Toki, located at the central part of Japan

Akata, N., Shiroma, Y., Ikemoto, N., Kato, A., Hegedus, M., Tanaka, M., Kakiuchi, H., Kovacs, T.

Radiation Environment and Medicine   7   47 - 52   2018.3

Air Absorbed Dose Rate Measurements and External Dose Assessment

Louis Ngoa Engola, Joseph Emmanuel Ndjana, Nkoulou II, Masahiro Hosoda, Daniel Bongue, Saidou, Naofumi Akata, Rosalie Koukong Heya, Mo?se Godfroy, Kwato Njock, Shinji Tokonami

Japanese Journal of Health Physics   53 ( 1 )   200 - 209   2018.1

Determination of tritium activity and chemical forms in the exhaust gas from a large fusion test device

Tanaka, M., Kato, H., Suzuki, N., Iwata, C., Akata, N.

Journal of Radioanalytical and Nuclear Chemistry   318   877 - 885   2018

Integrated radiation monitoring and interlock system for the LHD deuterium experiments

Nakanishi, H., Yokota, M., Aoyagi, M., Ohsuna, M., Ito, T., Imazu, S., Nonomura, M., Ogawa, K., Isobe, M., Akata, N., Tanaka, M., Saze, T., Nishimura, K., Hayashi, H., Miyake, H., Ogawa, H., Maeno, H., Emoto, M., Yoshida, M., Kawamura, T., Sakakibara, S, Ishiguro, S., Osakabe, M.

Fusion Engineering and Design   129   259 - 262   2018

Monitoring of tritium concentration by simplified active sampler in a fusion test facility

Tanaka, M., Yamamoto, Y., Iwata, C., Akata, N.

Plasma and Fusion Research   13   2018

Impacts of anthropogenic source from the nuclear fuel reprocessing plants on global atmospheric iodine-129 cycle: a model analysis

Kadowaki, M., Katata, G., Terada, H., Suzuki, T., Hasegawa, H., Akata, N., Kakiuchi, H.

Atmospheric Environment   184   278 - 291   2018

Consideration on the Necessity of Tritium Limit in Foods in Japan - Perspective on the Current Food Regulation

Iwaoka Kazuki, Akata Naofumi, Hosoda Masahiro, Tokonami Shinji

PLASMA AND FUSION RESEARCH   12   2017.7

A survey of a high natural radiation spot in Tono area, Japan

Akata, N., Ikeda, T., Minato, S., Shiroma, Y., Shimo, M.

Radiation Environment Medicine   6   34 - 38   2017.2

Weak size dependence of resuspended radiocesium adsorbed on soil particles collected after the Fukushima nuclear accident

Kaneyasu, N., Ohashi, H., Suzuki, F., Okuda, T., Ikemori, F., Akata, N., Kogure, T.

Journal of Environmental Radioactivity   172   65 - 73   2017

Absorbed dose rate in air at the NIFS Site before the deuterium plasma experiment in LHD

Shiroma, Y., Akata, N., Miyake, H., Hayashi, H., Saze, T., Tanaka, M., Nishimura, K.

Plasma and Fusion Research   12   2017

Regional and global contributions of anthropogenic iodine-129 in monthly deposition samples collected in North East Japan between 2006 and 2015

Hasegawa, H., Ohtsuka, Y., Kakiuchi, H., Akata, N., Hisamatsu, S.

Journal of Environmental Radioactivity   2017

Measurement system for alpha and beta emitters with continuous air sampling under different exposure situations

Yamada, R., Tamakuma, Y., Iwaoka, K., Hosoda, M., Shiroma, Y., Akata, N., Mizuno, H., Yamada, K., Kuroki, T., Tokonami, S.

Applied Radiation and Isotopes   126   79 - 82   2017

2016年の日本大学郡山キャンパス内における放射性セシウムの蓄積量

加藤愛佳, 加藤一美, 齋藤祐峻, 大竹修平, 佐藤寛朗, 田村美樹, 渡邊瑞左, 渡部夏菜, 奥山克彦, 赤田尚史

放地研特別寄稿シリーズ，放射線地学研究所，SCS-120   1 - 4   2017

Temporal variation of post-accident atmospheric Cs-137 in an evacuated area of Fukushima Prefecture: Size-dependent behaviors of Cs-137-bearing particles

Shinya Ochiai, Hidenao Hasegawa, Hideki Kakiuchi, Naofumi Akata, Shinji Ueda, Shinji Tokonami, Shun'ichi Hisamatsu

JOURNAL OF ENVIRONMENTAL RADIOACTIVITY   165   131 - 139   2016.12

A simple method for sampling and analysis of particulate, inorganic gaseous and organic gaseous halogens in the atmosphere

Akata, N, Tsukada, H, Takahashi, T, Fukutani, S

Radiation Environment Medicine   5 ( 2 )   29 - 32   2016.8

Investigation of absorbed dose rate in air by car-borne survey in Namie Town, Fukushima Prefecture

Pornnumpa, C, Iwaoka, K, Akata, N, Hosoda, M, Sorimachi, A, Tokonami, S

Health Phys   51   115 - 121   2016.8

Spatial and temporal changes of Cs-137 concentrations derived from nuclear power plant accident in river waters in eastern Fukushima, Japan during 2012-2014

Shinya Ochiai, Shinji Ueda, Hidenao Hasegawa, Hideki Kakiuchi, Naofumi Akata, Yoshihito Ohtsuka, Shun'ichi Hisamatsu

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY   307 ( 3 )   2167 - 2172   2016.3

Long-Term Monitoring of Tritium Concentration in Environmental Water Samples Collected at Tono Area, Japan

Akata Naofumi, Tanaka Masahiro, Kato Hiromi, Yamanishi Hirokuni, Kakiuchi Hideki, Hayashi Hiroshi, Miyake Hitoshi, Nishimura Kiyohiko

PLASMA AND FUSION RESEARCH   11   13050302   2016.3

A new pretreatment technique for environmental tritium analysis with microwave heating method

Naofumi Akata, Masahiro Tanaka, Sadatsugu Takayama, Hideki Kakiuchi, Toshiya Tamari, Saburo Sano

Plasma and Fusion Research   11 ( 1 )   2016

The Study of Natural Radiation Exposure in Cameroon

AKATA Naofumi, HOSODA Masahiro, TOKONAMI Shinji

Japanese Journal of Health Physics   51 ( 4 )   204a - 204a   2016

TRITIUM ACTIVITY CONCENTRATIONS AND RESIDENCE TIMES OF GROUNDWATER COLLECTED IN ROKKASHO, JAPAN

Hidenao Hasegawa, Shinji Ueda, Naofumi Akata, Hideki Kakiuchi, Shun'ichi Hisamatsu

RADIATION PROTECTION DOSIMETRY   167 ( 1-3 )   201 - 205   2015.11

TERRESTRIAL GAMMA RADIATION DOSE RATE IN RYUKYU ISLANDS, SUBTROPICAL REGION OF JAPAN

M. Furukawa, S. Kina, M. Shiroma, Y. Shiroma, N. Masuda, D. Motomura, H. Hiraoka, S. Fujioka, T. Kawakami, Y. Yasuda, K. Arakawa, K. Fukahori, M. Jyunicho, S. Ishikawa, T. Ohomoto, R. Shingaki, N. Akata, W. Zhuo, S. Tokonami

RADIATION PROTECTION DOSIMETRY   167 ( 1-3 )   223 - 227   2015.11

FWT AND OBT CONCENTRATIONS IN PINE NEEDLE SAMPLES COLLECTED AT TOKI, JAPAN (1998-2012)

N. Akata, H. Kakiuchi, T. Tamari, M. Tanaka, T. Kawano, H. Miyake, T. Uda, K. Nishimura

RADIATION PROTECTION DOSIMETRY   167 ( 1-3 )   210 - 214   2015.11

COMPARATIVE DOSIMETRY FOR RADON AND THORON IN HIGH BACKGROUND RADIATION AREAS IN CHINA

H. Kudo, S. Tokonami, Y. Omori, T. Ishikawa, K. Iwaoka, S. K. Sahoo, N. Akata, M. Hosoda, P. Wanabongse, C. Pornnumpa, Q. Sun, X. Li, S. Akiba

RADIATION PROTECTION DOSIMETRY   167 ( 1-3 )   155 - 159   2015.11

A pilot study for dose evaluation in high-level natural radiation areas of Yangjiang, China

Yasutaka Omori, Shinji Tokonami, Tetsuo Ishikawa, Sarata Kumar Sahoo, Naofumi Akata, Atsuyuki Sorimachi, Masahiro Hosoda, Chanis Pornnumpa, Paitoon Wanabongse, Hiromi Kudo, Ye-Jing Hu, Yong-Xiang Ao, Xiao-Liang Li, Kun Li, Ying-Hua Fu, Quan-Fu Sun, Suminori Akiba

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY   306 ( 1 )   317 - 323   2015.10

Dual temperature dual pressure water-hydrogen chemical exchange for water detritiation

Takahiko Sugiyama, Akito Takada, Youhei Morita, Kenji Kotoh, Kenzo Munakata, Akira Taguchi, Takao Kawano, Masahiro Tanaka, Naofumi Akata

FUSION ENGINEERING AND DESIGN   98-99   1876 - 1879   2015.10

Nuclear accident-derived H-3 in river water of Fukushima Prefecture during 2011-2014

Shinji Ueda, Hidenao Hasegawa, Hideki Kakiuchi, Shinya Ochiai, Naofumi Akata, Shun'ichi Hisamatsu

JOURNAL OF ENVIRONMENTAL RADIOACTIVITY   146   102 - 109   2015.8

Effects of radiocesium inventory on Cs-137 concentrations in river waters of Fukushima, Japan, under base-flow conditions

Shinya Ochiai, Shinji Ueda, Hidenao Hasegawa, Hideki Kakiuchi, Naofumi Akata, Yoshihito Ohtsuka, Shun'ichi Hisamatsu

JOURNAL OF ENVIRONMENTAL RADIOACTIVITY   144   86 - 95   2015.6

Estimation of External Dose by Car-Borne Survey in Kerala, India

Masahiro Hosoda, Shinji Tokonami, Yasutaka Omori, Sarata Kumar Sahoo, Suminori Akiba, Atsuyuki Sorimachi, Tetsuo Ishikawa, Raghu Ram Nair, Padmavathy Amma Jayalekshmi, Paul Sebastian, Kazuki Iwaoka, Naofumi Akata, Hiromi Kudo

PLOS ONE   10 ( 4 )   e0124433   2015.4

Iodine-129 in water samples collected adjacent to a spent nuclear fuel reprocessing plant in Rokkasho, Japan

Shinji Ueda, Hideki Kakiuchi, Hidenao Hasegawa, Naofumi Akata, Hidehisa Kawamura, Shun'ichi Hisamatsu

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY   303 ( 2 )   1211 - 1215   2015.2

Radiocesium inventory on the campus of Nihon University, Koriyama, Fukushima, Japan

Akata, N, Okuyama, K, Tsujimoto, Y, Takahashi, N, Ishihara, M, Arai, Y, Itakura, T, Sato, T, Ogata, T, Kakiuchi, H

Radiation Emergency Medicine   4   57 - 61   2015.2

Atmospheric deposition of radionuclides (Be-7, Pb-210, Cs-134, Cs-137 and K-40) during 2000-2012 at Rokkasho, Japan, and impact of the Fukushima Dai-ichi Nuclear Power Plant accident

Naofumi Akata, Hidenao Hasegawa, Hitoshi Kawabata, Hideki Kakiuchi, Yuki Chikuchi, Nagayoshi Shima, Toshitaka Suzuki, Shun'ichi Hisamatsu

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY   303 ( 2 )   1217 - 1222   2015.2

Investigation of Environmental Radiation at Tono Area in Gifu Prefecture, Japan

HOSODA Masahiro, AKATA Naofumi, SHIMO Michikuni, FURUKAWA Masahide, IWAOKA Kazuki, TOKONAMI Shinji

RADIOISOTOPES   64 ( 7 )   465 - 474   2015

Characteristics of hydrogen and oxygen stable isotope ratios in precipitation collected in a snowfall region, Aomori Prefecture, Japan

Hidenao Hasegawa, Naofumi Akata, Hitoshi Kawabata, Tadahiro Sato, Yuki Chikuchi, Shun'ichi Hisamatsu

GEOCHEMICAL JOURNAL   48 ( 1 )   9 - 18   2014

2012年の積雪観測講習会における積雪断面観測結果とイオン成分濃度および水素・酸素同位体比

赤田尚史, 原田鉱一郎, 本谷研, 根本征樹, 佐藤研吾, 阿部修

東北の雪と生活   ( 28 )   42 - 45   2013.10

DAILY RADIONUCLIDE INGESTION AND INTERNAL RADIATION DOSES IN AOMORI PREFECTURE, JAPAN

Yoshihito Ohtsuka, Hideki Kakiuchi, Naofumi Akata, Yuichi Takaku, Shun'ichi Hisamatsu

HEALTH PHYSICS   105 ( 4 )   340 - 350   2013.10

Radiocarbon concentrations in environmental samples collected near the spent nuclear fuel reprocessing plant at Rokkasho, Aomori, Japan, during test operation using spent nuclear fuel

Naofumi Akata, Koichi Abe, Hideki Kakiuchi, Takashi Iyogi, Nagayoshi Shima, Shun'ichi Hisamatsu

Health Physics   105 ( 3 )   236 - 244   2013.9

Fluvial discharges of radiocaesium from watersheds contaminated by the Fukushima Dai-ichi Nuclear Power Plant accident, Japan

Shinji Ueda, Hidenao Hasegawa, Hideki Kakiuchi, Naofumi Akata, Yoshihito Ohtsuka, Shun'ichi Hisamatsu

Journal of Environmental Radioactivity   118   96 - 104   2013.4

Activity concentrations of environmental samples collected in Fukushima Prefecture immediately after the Fukushima nuclear accident.

Masahiro Hosoda, Shinji Tokonami, Hirofumi Tazoe, Atsuyuki Sorimachi, Satoru Monzen, Minoru Osanai, Naofumi Akata, Hideki Kakiuchi, Yasutaka Omori, Tetsuo Ishikawa, Sarata K Sahoo, Tibor Kovács, Masatoshi Yamada, Akifumi Nakata, Mitsuaki Yoshida, Hironori Yoshino, Yasushi Mariya, Ikuo Kashiwakura

Scientific reports   3   2283 - 2283   2013

Concentration of H-3 in plants around Fukushima Dai-ichi Nuclear Power Station

Hideki Kakiuchi, Naofumi Akata, Hidenao Hasegawa, Shinji Ueda, Shinji Tokonami, Masatoshi Yamada, Masahiro Hosoda, Atsuyuki Sorimachi, Hirofumi Tazoe, Kaori Noda, Shun'ichi Hisamatsu

SCIENTIFIC REPORTS   2   947   2012.12

Combination of Sulfur Isotope Ratio of Non-sea Salt Sulfate and Lead-210 Concentration in Aerosols as an Index of Long-range Transported Aerosols

小谷卓, 柳澤文孝, 金井豊, 宮岡明子, 赤田尚史

Radioisotopes   61 ( 2 )   65 - 70   2012.2

Determination of particulate, inorganic and organic gaseous halogens in the atmosphere

H. Tsukada, A. Takeda, H. Kakiuchi, N. Akata

KURRI Progress Report 2011   240   2012

LOW-LEVEL MEASUREMENT WITH A NOBLE GAS MASS SPECTROMETER FOR ORGANICALLY BOUND TRITIUM IN ENVIRONMENTAL SAMPLES

H. Kakiuchi, H. Hasegawa, N. Akata, T. Tamari, H. Kawamura, N. Baglan, N. Momoshima, T. Uda, S. Hisamatsu

FUSION SCIENCE AND TECHNOLOGY   60 ( 4 )   1256 - 1259   2011.11

DETERMINATION OF THE ATMOSPHERIC HTO CONCENTRATION AROUND THE NUCLEAR FUEL REPROCESSING PLANT IN ROKKASHO BY USING A PASSIVE TYPE SAMPLER

Naofumi Akata, Hideki Kakiuchi, Kuniaki Kanno, Nagayoshi Shima, Shun'ichi Hisamatsu

FUSION SCIENCE AND TECHNOLOGY   60 ( 4 )   1292 - 1295   2011.11

Tritium concentrations in the atmospheric environment at Rokkasho, Japan before the final testing of the spent nuclear fuel reprocessing plant

Naofumi Akata, Hideki Kakiuchi, Nagayoshi Shima, Takashi Iyogi, Noriyuki Momoshima, Shun'ichi Hisamatsu

JOURNAL OF ENVIRONMENTAL RADIOACTIVITY   102 ( 9 )   837 - 842   2011.9

Spatial Distribution of Stable Sulfur Isotope Ratio in Coal Samples in East Asian Region

本山玲美, 柳澤文孝, 上田晃, 鈴木祐一郎, 金井豊, 大澤英二, 小島武, 赤田尚史

Radioisotopes   60 ( 1 )   27-33 (J-STAGE) - 33   2011.1

Ten-year observation of sulfur isotopic composition of sulfate in aerosols collected at Tsuruoka, a coastal area on the Sea of Japan in northern Japan

Naofumi Akata, Fumitaka Yanagisawa, Takashi Kotani, Akira Ueda

GEOCHEMICAL JOURNAL   44 ( 6 )   571 - 577   2010

Chemical characterization of snowfall in Shinjo, Yamagata Prefecture, Japan and long-term trend of snow acidification during 1991/92 to 2002/03

赤田尚史, 柳澤文孝, 奥村信貴, 鈴木伸一朗, 阿部修, 佐藤威, 小杉健二, 望月重人, 佐藤篤司

雪氷   71 ( 4 )   253 - 262   2009.7

Air mass origins by back trajectory analysis for evaluating atmospheric (210)Pb concentrations at Rokkasho, Aomori, Japan

N. Akata, H. Kawabata, H. Hasegawa, K. Kondo, T. Sato, Y. Chikuchi, S. Hisamatsu, J. Inaba

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY   279 ( 2 )   493 - 498   2009.2

Total deposition velocities and scavenging ratios of Be-7 and Pb-210 at Rokkasho, Japan

Naofumi Akata, H. Kawabata, H. Hasegawa, T. Sato, Y. Chikuchi, K. Kondo, S. Hisamatsu, J. Inaba

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY   277 ( 2 )   347 - 355   2008.8

Plant induced changes in concentrations of caesium, strontium and uranium in soil solution with reference to major ions and dissolved organic matter

Akira Takeda, Hirofumi Tsukada, Yuichl Takaku, Naofumi Akata, Shun'ichi Hisamatsu

JOURNAL OF ENVIRONMENTAL RADIOACTIVITY   99 ( 6 )   900 - 911   2008.6

山形蔵王の着氷に含まれる化学成分の特徴‐長距離輸送成分の影響評価‐

赤田尚史

雪国環境研究   ( 14 )   1 - 12   2008.3

Sulfur isotope ratio of sulfate in rime collected at Mt. Zao, Yamagata Prefecture, Japan

赤田尚史, 柳澤文孝, 山下千尋, 座間味一朗, 松木兼一郎, 川端明子, 上田晃

雪氷   70 ( 2 )   105 - 112   2008.3

Mechanism of Be-7 scavenging from the atmosphere through precipitation in relation to seasonal variations in Rokkasho Village, Aomori Prefecture, Japan

H. Hasegawa, N. Akata, H. Kawabata, Y. Chikuchi, T. Sato, K. Kondo, J. Inaba

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY   273 ( 1 )   171 - 175   2007.7

Deposition of (CS)-C-137 in Rokkasho, Japan and its relation to Asian dust

Naofumi Akata, Hidenao Hasegawa, Hitoshi Kawabata, Yuki Chikuchi, Tadahiro Sato, Yoshihito Ohtsuka, Kunio Kondo, Shun'ichi Hisamatsu

JOURNAL OF ENVIRONMENTAL RADIOACTIVITY   95 ( 1 )   1 - 9   2007

Estimation of natural radionuclide deposition flux by a simple simulation model at Rokkasho Village, Japan

Hasegawa, H, Akata, N, Kawabata, H, Chikuchi, Y, Sato, T, Kondo, K, Hisamatsu, S, Inaba, J

International Symposium on Environmental Modeling and Radioecology, Rokkasho, Japan, October.   255 - 258   2007

Atmospheric concentrations and deposition fluxes of 7Be and 210Pb at Rokkasho Village, Japan

Akata, N, Kawabata, H, Hasegawa, H, Sato, T, Chikuchi, Y, Kondo, K, Hisamatsu, S, Inaba, J

International Symposium on Environmental Modeling and Radioecology, Rokkasho, Japan, October.   263 - 266   2007

大東諸島の自然放射能レベルとその地質学的解釈

古川雅英, 赤田尚史, 床次眞司

Radioisotopes   54   213 - 224   2005.7

Preliminary study of below-cloud deposition rates of the major ionic species using atmospheric depositions collected along the altitudinal gradient on Mt. Emei, Sichuan, China

Akata, N, Yanagisawa, F, Jia, S.Y, Li, X.D, Kawawbata, H

Proceedings of the Fourth ADEC Workshop   257 - 260   2005.4

自然放射能からみた東アジアにおけるレスと風成塵起源土壌の特徴

古川雅英, 赤田尚史, 卓維海, 郭秋菊, 楢崎幸範, 床次眞司

エアロゾル研究   20   306 - 312   2005

Eolian dust may be an effective expander of HBRA: a case of China-Ryukyu connection

M Furukawa, W Zhuo, S Tokonami, N Akata, Q Guo

HIGH LEVELS OF NATURAL RADIATION AND RADON AREAS: RADIATION DOSE AND HEALTH EFFECTS   1276   307 - 308   2005

Effect of salinity on biological concentrations of Cs-137 in phytoplankton inhabited in brackish Lake Obuchi, Japan, bordered by nuclear fuel facilities

K Kondo, S Ueda, Y Chikuchi, H Kawabata, N Akata, H Hasegawa, O Mitamura, Y Seike, J Inaba

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY   261 ( 3 )   559 - 567   2004

Distribution and dynamics of radionuclides and stable elements in the coastal waters off Rokkasho Village, Japan, prior to the opening of a nuclear reprocessing facility: Part III. Concentration levels of radionuclides in seawater off Rokkasho Village

K. Kondo, H. Kawabata, S. Ueda, N. Akata, O. Mitamura, Y. Seike, J. Inaba, Y. Ohmomo

Journal of Radioanalytical and Nuclear Chemistry   258 ( 3 )   463 - 472   2003.12

Seasonal variation and altitude distribution of bulk deposition chemistry at Mt. Emei, Sichuan Province, China

N Akata, F Yanagisawa, S Jia, Li, X, H Yang, H Masuda

GEOCHIMICA ET COSMOCHIMICA ACTA   67 ( 18 )   A11 - A11   2003.9

Distribution and dynamics of radionuclides and stable elements in the coastal waters off Rokkasho Village, Japan, prior to the opening of a nuclear reprocessing facility

K Kondo, H Kawabata, S Ueda, N Akata, J Inaba, O Mitamura, Y Seike, Y Ohmomo

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY   258 ( 1 )   33 - 41   2003.9

Distribution and decomposition of suspended particles, which function in the elimination of radionuclides and stable elements from seawater in the coastal waters off Rokkasho Village, Japan

Kondo, K, Kawabata, H, Ueda, S, Hasegawa, H, Akata, N, Inaba, J, Ohmomo, Y

Proceedings of the International Symposium on Radioecology and Environmental Dosimetry, Rokkasho, Japan   377 - 383   2003

Scavenging mechanism of radionuclide 7Be from the atmosphere through precipitation in Rokkasho Village, Aomori Prefecture, Japan

Hasegawa, H, Akata, N, Kawabata, H, Chikuchi, Y, Sato, T, Kondo, K, Inaba, J

Proceedings of the International Symposium on Radioecology and Environmental Dosimetry, Rokkasho, Japan   421 - 426   2003

A first experiment on the scavenging of materials by rainfall using a large artificial climate experiment chamber at ACEF in IES

Kawabata, H, Hasegawa, H, Akata, N, Chikuchi, Y, JPA ACEFF Group, Kondo, K, Inaba, J

Proceedings of the International Symposium on Radioecology and Environmental Dosimetry, Rokkasho, Japan   450 - 455   2003

A study on the washout coefficient of tritiated water vapor in the atmosphere

Iida, T, Saito, K, Kawabata, H, Hasegawa, H, Akata, N

Proceedings of the First Asian and Oceanic Congress for Radiation Protection (AOCRP-1), ps-6-35 (in CD-ROM)   2002.7

峨眉山の降雨に含まれる硫酸イオンのイオウ同位体比（序報）

柳澤文孝, 賈疎源, 益田晴恵, 赤田尚史, 本山玲美, 上田晃, 川端明子

Journal of Ecotechnology Research   8 ( 1 )   37 - 40   2002.4

Sulfur Isotope Ratios of Coals used in East Asia.

本山玲美, 柳沢文孝, 赤田尚史, 鈴木祐一郎, 金井豊, 小島武, 川端明子, 上田晃

雪氷   64 ( 1 )   49 - 58   2002.1

Features of "red snow" which fell in Tohoku district in January and March, 2001.

柳沢文孝, 奥村信貴, 本山玲美, 松本寿子, 山下千尋, 赤田尚史, 阿部修

寒地技術論文・報告集   17   310 - 316   2001.11

Concentration of Metallothionein in Mice Livers after a Small Dose lrradiation

Saito, M, Yanai, T, Hasegawa, H, Akata, N, Kudo-Kanaiwa, S, Matsumoto, T, Noda, Y, Otsu, H, Sato, F

Journal of Radiation Research   7 ( 1 )   1 - 6   2001.6

東アジア地域の降雨に含まれる硫酸イオンの硫黄同位体比

柳澤文孝, 赤田尚史, 本山玲美, 賈疎源, 益田晴恵, 楊慧東, 萬新南, 中屋真司, 北田奈緒子, 藤井理行, 小林俊一, 西尾文彦, 高橋晃, 川端明子, 上田晃

Journal of Ecotechnology Research   7 ( 1 )   7 - 12   2001.1

Seasonal Variation of Sulfur Isotope Ratio of Non-sea Salt Sulfate in Japan Seasonal Variation of Sulfur Isotope Ratio of Non-sea Salt Sulfate in Japan

Yanagisawa, F, Akata, N, Motoyama, R, Kawabata, A, Ueda, A

Journal of Ecotechnology Research   7 ( 1 )   7 - 12   2001.1

Concentration of metallothionein in mice livers after a small dose of irradiation

S Mikio, T Yanai, H Hasegawa, N Akata, S Kanaiwa-Kudo, T Matsumoto, Y Noda, H Otsu, F Sato

JOURNAL OF RADIATION RESEARCH   39 ( 4 )   239 - 242   1998.12

Estimation of tritium dispersion from the spent nuclear fuel reprocessing plant in Rokkasho using an atmospheric dispersion model

K. Abe, N. Akata, H. Kakiuchi, T. Iyogi, J. H. Chiang, H. Suwa, S. Hisamatsu

Proceedings of The 3rd International Conference on Radioecology & Environmental Radioactivity   2014.9

原子力関連施設周辺での環境トリチウムモニタリングの実際

柿内秀樹，赤田尚史

Journal of Plasma and Fusion Research   89 ( 10 )   645 - 651   2013.9

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