研究者詳細 - 細田　正洋

論文 - 細田　正洋

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Elevated levels of tritium in surface water collected in the immediate aftermath of the Fukushima accident

Khemruthai Kheamsiri, Donovan Anderson, Hirofumi Tazoe, Kazusa Okada, Nao Otashiro, Haruka Kuwata, Hideki Kakiuchi, Masahiro Hosoda, Tibor Kovacs, Shinji Tokonami, Naofumi Akata

Environmental Pollution 126040 2025年03月

Fukushima’s Tap and Groundwater a Decade after the Nuclear Accident with Radiocesium, Tritium, and Radon

Donovan Anderson, Yuki Oda, Yasuyuki Taira, Yasutaka Omori, Hirofumi Tazoe, Naofumi Akata, Chutima Kranrod, Ryohei Yamada, Haruka Kuwata, Yuki Tamakuma, Hiromi Kudo, Minoru Osanai, Natsuki Nishimura, Yumi Yasuoka, Tetsuya Sanada, Masahiro Hosoda, Shinji Tokonami

Environmental Science & Technology 59 4906 - 4914 2025年03月

Natural gamma dose rate and radioactivity concentrations at a former tin mining area in Kanchanaburi, Thailand

Saowarak Musikawan, Worawat Poltabtim, Khemruthai Kheamsiri, Chutima Kranrod, Theerawat Pluemji, Kitkawin Aramrun, Yasutaka Omori, Hirofumi Tazoe, Masahiro Hosoda, Naofumi Akata, Shinji Tokonami

Journal of Radioanalytical and Nuclear Chemistry 2025年03月

Contribution of Building Materials to the Radon Inhalation Dose in a Radon Prone Area of Adamawa, Cameroon

Soumayah Bachirou, Saïdou, Masahiro Hosoda, Chutima Kranrod, Bongue Daniel, Kwato Njock, Moise Godfroy, Shinji Tokonami

Radiation Environment and Medicine 14 ( 1 ) 13 - 16 2025年03月

Revisiting the influence of the equilibrium factor and the contribution of Rn, Tn and their progeny in dose assessment

Gondji Dieu Souffit, Koyang François, Oumar Bobbo Modibo, Eka Djatnika Nugraha, Ndjana Nkoulou II Joseph Emmanuel, Jalaluddin Shah, Rosaline Mishra, Chutima Kranrod, Yasutaka Omori, Masahiro Hosoda, Saidou, Shinji Tokonami

Air Quality, Atmosphere & Health 2025年02月

Public exposure from inhalation of radon and thoron around the tin mine and smelter areas in Bangka, Indonesia

Radhia Pradana, Eka Djatnika Nugraha, Yasutaka Omori, Sharah Nataz, Shilfa Ilma, Dwi Winarni, Wahyudi, Untara, Irwan Kurnia, Rini Safitri, Chutima Kranrod, Michiya Sasaki, Ade Devriany, Agus Nur Rachman, Rusbani Kurniawan, Haeranah Ahmad Muflihatul, Muniroh Fahrul Islam, Ilsa Rosianna, Nurokhim, Makhsun, Susilo Widodo, Heru Prasetio, Masahiro Hosoda, Shinji Tokonami

Scientific Reports 14 ( 1 ) 80443 2024年12月

ピンホールカメラによる単純X線撮影・CT検査・IVR時の散乱X線発生源の可視化

小山内暢, 田村梨菜, 田中智妃蕗, 三上葉月, 野呂朝夢祐, 工藤幸清, 細川翔太, 對馬惠, 山口一郎, 細田正洋, 齋藤陽子

日本放射線看護学会誌 12 ( 2 ) 1 - 10 2024年12月

Structure shielding of school and gymnasium buildings against fallout gamma radiation from the Fukushima Daiichi Nuclear Power Plant accident

Manaya Taoka, Rui Kudo, Ryohei Yamada, Yasutaka Omori, Kazutaka Tanaka, Masahiro Hosoda, Shinji Tokonami

Ecotoxicology and Environmental Safety 288 117394 2024年12月

Direct measurement of indoor thoron and radon progeny and estimation of inhalation dose in three cities in Gabon: Comparison of the use of thoron typical and measured equilibrium factor values

Sylvere Yannick Loemba Mouandza, Saidou, W. Ndong, Chutima Kranrod, Masahiro Hosoda, P. Ondo Meye, R. Bipolo Djeune, E.-D. Durastanti-Rabenga Mombo, H.M.-J. Andeme-Abondhoume, B.C. Mabika Ndjembidouma, T.B. Ekogo, G.H. Ben-Bolie, Shinji Tokonami

Journal of Environmental Radioactivity 280 107557 2024年12月

Environmental dependence of geometrical efficiency for the scintillation cell in radon and thoron measurement

Kazuki Iwaoka, Lorna Jean H Palad, Chitho P Feliciano, Yuki Tamakuma, Masahiro Hosoda, Shinji Tokonami, Reiko Kanda, Takashi Moritake

Radiation Protection Dosimetry 200 ( 16-18 ) 1711 - 1714 2024年11月

Radiation dose estimation for indoor radon, thoron and their progenies using a stochastic method—a small-scale survey in Wuhan, China

Jun Hu, Chutima Kranrod, Yasutaka Omori, Masahiro Hosoda, Shinji Tokonami

Radiation Protection Dosimetry 200 ( 16-18 ) 1720 - 1725 2024年11月

Evaluation of an ionization chamber characteristics for 222Rn calibration

Rio Furukawa, Miroslaw Janik, Satoshi Kodaira, Hiroki Hashimoto, Yasutaka Omori, Shinji Tokonami, Masahiro Hosoda, Morihito Shimizu, Seiya Manabe, Tetsuro Matsumoto, Chihiro Shimodan, Yasushi Sato, Hideki Harano

Radiation Protection Dosimetry 200 ( 16-18 ) 1696 - 1700 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

Mizuki Kiso, Manaya Taoka, Aoi Sampei, Hiroki Hashimoto, Yuki Abe, Yuki Oda, Yasutaka Omori, Ryohei Yamada, Masahiro Hosoda, Chutima Kranrod, Tetsuo Ishikawa, Shinji Tokonami

Radiation Protection Dosimetry 200 ( 16-18 ) 1671 - 1675 2024年11月

Practical cut-off value for radon concentration in indoor air using an activated-charcoal radon collector

Yumi Yasuoka, June Takemoto, Yasutaka Omori, Nanaho Kawamoto, Nao Goda, Hiroyuki Nagahama, Jun Muto, Shinji Tokonami, Masahiro Hosoda, Takeshi Iimoto, Takahiro Mukai

Radiation Protection Dosimetry 200 ( 16-18 ) 1701 - 1705 2024年11月

Ecological and Health Risks from Trace Elements Contamination in Soils at the Rutile Bearing Area of Akonolinga, Cameroon

Fayette Kitcha Sime, GONDJI Dieu Souffit, Ilsa Rosianna, Eka Djatnika Nugraha, Modibo Oumar Bobbo, Kranrodc, Yasutaka Omori, Naofumi Akata, Masahiro Hosoda, SAÏDOU, Shinji Tokonami

Applied Sciences 14 ( 22 ) 10538 2024年11月

Thoron exposure in the radon-thoron prone area of the Adamawa Region, Cameroon

Soumayah Bachirou, Saidou, Rosaline Mishra, Chutima Kranrod, Masahiro Hosoda, Sabahet Jalaluddin, Balvinder K. Sapra, Moise Godfroy Kwato Njock, Shinji Tokonami

Applied Radiation and Isotopes 213 111498 2024年11月

Transparent X-ray Shielding Solutions with Various Metal Ions

Ryoma Tokonami, Minoru Osanai, Masahiro Hosoda, Shinji Tokonami, Tatsuhiro Takahashi

ACS Omega 9 ( 44 ) 44770 - 44777 2024年10月

Interlaboratory Comparison in Japan for Radon Determination in Water

Shunya NAKASONE, Akinobu ISHIMINE, Yuki TAMAKUMA, Masahiro HOSODA, Naofumi AKATA, Tetsuya SANADA, Masahiro TANAKA, Sumi YOKOYAMA, Minoru SAKAMA, Akira TANAHARA, Masahide FURUKAWA, Shinji TOKONAMI, Yumi YASUOKA, Yoshitaka SHIROMA

Japanese Journal of Health Physics 59 ( 3 ) 131 - 134 2024年10月

Radon exhalation rate from the latex pillows and its potential exposure to users

Phachirarat Sola, Kanokporn Boonsirichai, Santi Raksawong, Ritiron Samran, Pimprapa Chaijak, Hirofumi Tazoe, Chutima Kranrod, Rawiwan Kritsananuwat, Sattawat Jongjitklang, Vichai Puripunyavanich, Masahiro Hosoda, Waleeporn Pongkua, Shinji Tokonami

Radiation Medicine and Protection 5 ( 4 ) 238 - 242 2024年09月

Report of Preliminary Survey on Ambient Dose Rate and Particulate Matter in Catania, Italy

Yuki Tamakuma, Masahiro Hosoda, Naofumi Akata

Radiation Environment and Medicine 13 ( 2 ) 70 - 73 2024年09月

Radon in Soil Gas and Ambient Dose Equivalent Rate Measurements in Yaoundé, Cameroon

Eric Gourda Hebsia, Oumar Bobbo Modibo, Ayoba Ndimantchi, Joseph Emmanuel Ndjana, Nkoulou II, Eka Djatnika Nugraha, Chutima Kranrod, Yasutaka Omori, Masahiro Hosoda, Saïdou, Shinji Tokonami

Radiation Environment and Medicine 13 ( 2 ) 52 - 59 2024年09月

Effective dose assessment due to inhalation of 222Rn, 220Rn, and their progeny: highlighting the major contribution of thoron in a thoron-prone area in Cameroon

Léonard Boris Djeufack, Issa Hamadou, Chutima Kranrod, Rosaline Mishra, Masahiro Hosoda, Balvinder K Sapra, Saidou, Shinji Tokonami

Radiation and Environmental Biophysics 63 ( 3 ) 357 - 369 2024年08月

Contribution of Thoron and Its Progeny to the Effective Dose by Inhalation in the Uranium-Thorium Bearing Regions of Mayo Kebbi and Guéra in Chad

Ziebno Patale, Bineng Guillaume Samuel, Chutima Kranrod, Oumar Bobbo Modibo, Takoukam Soh, Serge Didier, Hamado, Yerima Abba, Yasutaka Omori, Masahiro Hosoda, Saidou, Ekobena Henri Paul, Shinji Tokonami

Health Physics 127 ( 5 ) 588 - 599 2024年06月

Health Impacts of Natural Background Radiation in High Air Pollution Area of Thailand

Autsavapromporn N., Kranrodc, Rawiwan Kritsananuwat, Phachirarat Sola, Pitchayaponne Klunklin, Imjai Chitapanarux, Churdsak Jaikang, Tawachai Monum, Masahiro Hosoda, Shinji Tokonami

Toxics 2024年06月

Real-time air quality monitoring based on locally developed unmanned aerial vehicle and low-cost smart electronic device

Jacob Mbarndouka Taamté, Michaux Kountchou Noube, Vitrice Ruben Folifack Signing, Yerima Abba Hamadou, Masahiro Hosoda, Saidou, Shinji Tokonami

Journal of Instrumentation 19 ( 5 ) 05036 - 05036 2024年05月

Simple surface modification of barium sulfate for improving the interface of polymer composites and its x‐ray shielding properties

Ryoma Tokonami, Minoru Osanai, Masahiro Hosoda, Shinji Tokonami, Tatsuhiro Takahashi

Polymer Composites 1 - 11 2024年02月

Simultaneous measurements of radon, thoron and thoron progeny and induced cancer risk assessment in Djeno, Pointe-Noire, Republic of Congo

Jucit Sem Sondzo, Guy Blanchard Dallou, Philippe Ondo Meye, Russel Rolphe Caroll Moubakou Diahou, Clobite Bouka Biona, Chutima Kranrod, Yasutaka Omori, Masahiro Hosoda, Saïdou, Shinji Tokonami

Radiation Protection Dosimetry 2024年01月

Uranium Isotope Characterization in Volcanic Deposits in a High Natural Background Radiation Area, Mamuju, Indonesia

Ilsa Rosianna, Eka Djatnika Nugraha, Hirofumi Tazoe, Heri Syaeful, Adi Gunawan Muhammad, I Gde Sukadana, Frederikus Dian Indrastomo, Ngadenin, Fadiah Pratiwi, Agus Sumaryanto, Sucipta Sucipta, Hendra A. Pratama, Deni Mustika, Leli Nirwani, Nurokhim, Yasutaka Omori, Masahiro Hosoda, Naofumi Akata, Shinji Tokonami

Geosciences 13 388 2023年12月

Assessment of Radiological Risks due to Indoor Radon, Thoron and Progeny, and Soil Gas Radon in Thorium-Bearing Areas of the Centre and South Regions of Cameroon

Atangana Bingana Martin Serge, serge didier takoukam, Bineng Guillaume Samuel, Kranrod Chutima, Yasutaka Omori, Masahiro Hosoda, Saïdou, Shinji Tokonami

Atmosphere 14 ( 12 ) 1708 2023年11月

Calibration experiments for radon in drinking water measurements using portable-type electrostatic-collection radon monitors

Masahiro Hosoda, Yasutaka Omori, Hiroki Hashimoto, Maho Matsumoto, Yumi Yasuoka, Tetsuya Sanada, Yuki Oda, Mizuki Kiso, Aoi Sampei, Chutima Kranrod, Hirofumi Tazoe, Naofumi Akata, Yasuyuki Taira, Yuki Tamakuma, Ryohei Yamada, Hiromi Kudo, Mayumi Shimizu, Shinji Tokonami

Radiation Protection Dosimetry 199 ( 18 ) 2203 - 2206 2023年11月

Site-specific dose conversion factors for radon progeny based on ambient aerosol characteristics in an outdoor environment and a tourist cave

Yuki Tamakuma, Mizuki Kiso, Aoi Sampei, Hiroki Hashimoto, Chutima Kranrod, Masahiro Hosoda, Sohei Ooka, Masahide Furukawa, Shinji Tokonami

Radiation Protection Dosimetry 199 ( 18 ) 2207 - 2211 2023年11月

Improvement of spectral analysis using a NaI(Tl) scintillation spectrometer to evaluate ambient gamma dose rates from primordial radionuclides

Yasutaka Omori, Atsuyuki Sorimachi, Masahiro Hosoda, Sarata Kumar Sahoo, Norbert Kavasi, Osamu Kurihara, Shinji Tokonami, Tetsuo Ishikawa

Radiation Protection Dosimetry 199 ( 18 ) 2233 - 2237 2023年11月

Development of calculation tool for iodine 131 biodistribution depending on the aerosol particle distribution

Kazuki Iwaoka, Eliza B Enriquez, Yuki Tamakuma, Masahiro Hosoda, Shinji Tokonami, Chitho P Feliciano, Reiko Kanda

Radiation Protection Dosimetry 199 ( 18 ) 2244 - 2247 2023年11月

External dose measurements to investigate the body-size dependence of personal dosemeter responses in areas affected by the Fukushima Daiichi nuclear accident

K Yajima, E Kim, K Tani, H Arae, K Iwaoka, M Hosoda, S Tokonami, O Kurihara, T Aono

Radiation Protection Dosimetry 199 ( 15-16 ) 2000 - 2004 2023年10月

Expectation for Utilizing Supercomputers in Natural Radiation Research

Kazuki Iwaoka, Masahiro Hosoda, Shinji Tokonami

Radiation Environment and Medicine 12 ( 2 ) 107 - 110 2023年10月

Development and a feasibility study using Gafchromic XRQA2 film as a novel passive radon measurement technique

Worawat Poltabtim, Chutima Kranrod, Yasutaka Omori, Saowarak Musikawan, Masahiro Hosoda, Shinji Tokonami

Radiation Measurements 107012 - 107012 2023年09月

Mapping in a radon-prone area in Adamawa region, Cameroon, by measurement of radon activity concentration in soil

Soumayah Bachirou, Saïdou, Chutima Kranrod, Joseph Emmanuel Ndjana Nkoulou II, Daniel Bongue, Hamadou Yerima Abba, Masahiro Hosoda, Moise Godfroy Kwato Njock, Shinji Tokonami

Radiation and Environmental Biophysics 62 ( 4 ) 427 - 439 2023年08月

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年07月

Car-borne survey and dose assessment from external radiation exposure in Bangka Island

Radhia Pradana, Eka Djatnika Nugraha, Wahyudi Wahyudi, Untara Untara, Muji Wiyono, Ade Devriany, Sharah Nataz Shilfa, Michiya Sasaki, Heru Prasetio, Ilma Dwi Winarni, Egnes Ekaranti, Nunung Nuraeni, Chutima Kranrod, Dadong Iskandar, Gatot Suhariyono, Harry Nugroho Eko Surniyantoro, Makhsun Makhsun, Susilo Widodo, Yasutaka Omori, Eri Hiswara, Masahiro Hosoda, Shinji Yoshinaga, Shinji Tokonami

Environmental Science and Pollution Research 30 ( 38 ) 89280 - 89292 2023年07月

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年07月

Public Exposure to Natural Radiation and the Associated Increased Risk of Lung Cancer in the Betare-Oya Gold Mining Areas, Eastern Cameroon

Joseph Emmanuel Ndjana, Nkoulou II, Louis Ngoa Engola, Guy Blanchard Dallou, Saïdou, Daniel Bongue, Masahiro Hosoda, Moïse Godefroy, Kwato Njock, Shinji Tokonami

Journal of Radiation Protection and Research 2023年06月

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年04月

Long-term Analysis of Internal Exposure Dose-Reduction Effects by Food Regulation and Food Item Contribution to Dose after the Fukushima Daiichi Nuclear Power Plant Accident

Minoru Osanai;Mayu Miura;Chihiro Tanaka;Kohsei Kudo;Shota Hosokawa;Megumi Tsushima;Tomuhiro Noro;Kazuki Iwaoka;Masahiro Hosoda;Ichiro Yamaguchi;Yoko Saito

Foods 2023年03月

Estimation of Ambient Dose Equivalent Rate Distribution Map Using Walking Survey Technique in Hirosaki City, Aomori, Japan

Worawat Poltabtim, Saowarak Musikawan, Arkarapol Thumwong, Yasutaka Omori, Chutima Kranrod, Masahiro Hosoda, Kiadtisak Saenboonruang, Shinji Tokonami

International Journal of Environmental Research and Public Health 20 ( 3 ) 2657 2023年02月

Evaluation of radon concentration measurements in water using the radon degassing method

Maho Matsumoto, Yumi Yasuoka, Yui Takakaze, Masahiro Hosoda, Shinji Tokonami, Kazuki Iwaoka, Takahiro Mukai

Journal of Radioanalytical and Nuclear Chemistry 2022年12月

Oxidative Modification Status of Human Serum Albumin Caused by Chronic Low-Dose Radiation Exposure in Mamuju, Sulawesi, Indonesia

Masaru Yamaguchi, Yota Tatara, Eka Djatnika Nugraha, Yuki Tamakuma, Yoshiaki Sato, Tomisato Miura, Masahiro Hosoda, Shinji Yoshinaga, Mukh Syaifudin, Shinji Tokonami, Ikuo Kashiwakura

Antioxidants 11 ( 12 ) 2384 2022年12月

From radon and thoron measurements, inhalation dose assessment to national regulation and radon action plan in Cameroon

Saidou, Shinji Tokonami, Masahiro Hosoda, Augustin Simo, Joseph Victor Hell, Olga German, Esmel Gislere Oscar Meless

Journal of Radiation Protection and Research 47 ( 4 ) 237 - 245 2022年12月

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年09月

Serum Proteomic and Oxidative Modification Profiling in Mice Exposed to Total Body X-Irradiation

Masaru Yamaguchi, Yota Tatara, Eka Djatnika Nugraha, Yoshiaki Sato, Tomisato Miura, Masahiro Hosoda, Mukh Syaifudin, Shinji Tokonami, Ikuo Kashiwakura

Antioxidants 11 ( 9 ) 1710 2022年08月

Utilization of computational fluid dynamics simulation for gas exposure chamber

Kazuki Iwaoka, Miroslaw Janik, Yuki Tamakuma, Masahiro Hosoda, Shinji Tokonami, Reiko Kanda

Radiation Environment and Medicine 11 ( 2 ) 61 - 64 2022年08月

Health Effects of Natural Environmental Radiation during Burning Season in Chiang Mai, Thailand

Narongchai Autsavapromporn, Chutima Krandrod, Pitchayaponne Klunklin, Rawiwan Kritsananuwat, Churdsak Jaikang, Kittikun Kittidachanan, Imjai Chitapanarux, Somchart Fugkeaw, Masahiro Hosoda, Shinji Tokonami

Life 12 ( 6 ) 853 2022年06月

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 2022年05月

Detection of biological responses to low-dose radiation in humans

Masaru Yamaguchi, Yota Tatara, Eka Djatnika Nugraha, Dwi Ramadhani, Yuki Tamakuma, Yoshiaki Sato, Tomisato Miura, Masahiro Hosoda, Shinji Yoshinaga, Mukh Syaifudin, Ikuo Kashiwakura, Shinji Tokonami

Free Radical Biology and Medicine 184 196 - 207 2022年05月

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 Environment and Medicine 11 ( 1 ) 7 - 15 2022年03月

High indoor radon concentration obsarbed in Yomitan-son, Okinawa Prefecture, Southwestern part of Japan

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

Radiation Environment and Medicine 11 ( 1 ) 16 - 20 2022年03月

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 2022年02月

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 (accepted) 2022年02月

From radon and thoron measurements, inhalation dose assessment to national regulation and radon action plan in Cameroon

Saïdou, Shinji Tokonami, Masahiro Hosoda, Augustin Simo, Joseph Victor Hell, Olga German, Esmel Gislere Oscar Meless

Journal of Radiation Protection and Research (accepted) 2022年02月

Utilization of computational fluid dynamics simulation for gas exposure chamber

Kazuki Iwaoka, Miroslaw Janik, Yuki Tamakuma, Masahiro Hosoda, Shinji Tokonami, Reiko Kanda

Radiation Environment and Medicine 2022年02月

Reassessment of the radiocesium resuspension flux from contaminated ground surfaces in eastern 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 ( 2 ) 783 - 803 2022年01月

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 2022年01月

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 1648 2021年12月

A Potential Serum Biomarker for Screening Lung Cancer Risk in High Level Environmental Radon Areas: A Pilot Study

Narongchai Autsavapromporn, Pitchayaponne Klunklin, Imjai Chitapanarux, Churdsak Jaikang, Busyamas Chewaskulyong, Patumrat Sripan, Masahiro Hosoda, Shinji Tokonami

Life 11 1273 2021年11月

Characterization of Commercially Available Active-Type Radon–Thoron Monitors at Different Sampling Flow Rates

Yuki Tamakuma, Chutima Kranrod, Yuto Jin, Hiromu Kobayashi, Eka Djatnika Nugraha, Aoi Sanpei, Mizuki Kiso, Hiroki Hashimoto, Ryoju Negami, Masahiro Hosoda, Shinji Tokonami

Atmosphere 12 ( 8 ) 971 2021年07月

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 330 ( 3 ) 1437 - 1444 2021年07月

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年07月

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 50 ( S1 ) 102 - 108 2021年06月

Occupational Radiation Dose, Especially for Eye Lens: Hp(3), in Medical Staff Members Involved in Computed Tomography Examinations

Minoru Osanai, Hidenori Sato, Kana Sato, Kohsei Kudo, Masahiro Hosoda, Shota Hosokawa, Maiko Kitajima, Megumi Tsushima, Akira Fujita, Yoichiro Hosokawa, Yoko Saito

Applied Sciences 11 ( 10 ) 4448 2021年05月

Estimation of Effect of Radiation Dose Reduction for Internal Exposure by Food Regulations under the Current Criteria for Radionuclides in Foodstuff in Japan Using Monitoring Results

Minoru Osanai, Daisuke Hirano, Shiori Mitsuhashi, Kohsei Kudo, Shota Hosokawa, Megumi Tsushima, Kazuki Iwaoka, Ichiro Yamaguchi, Takakiyo Tsujiguchi, Masahiro Hosoda, Yoichiro Hosokawa, Yoko Saito

Foods 10 ( 4 ) 691 2021年03月

Estimation of Annual Effective Dose in Namie Town, Fukushima Prefecture due to Inhalation of Radon and Thoron Progeny

Thamaborn Ploykrathok, Koya Ogura, Mayumi Shimizu, Masahiro Hosoda, Yoshitaka Shiroma, Hiromi Kudo, Yuki Tamakuma, Shinji Tokonami

Radiation Environment and Medicine 10 ( 1 ) 9 - 17 2021年02月

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

Oumar Bobbo Modibo, Shinji Tokonami, Masahiro Hosoda, Yuki Tamakuma, Hu Jun, Miklos Hegedus, Eka Djatnika Nugraha, Saidou, Hirofumi Tazoe, Naofumi Akata, Yutaka Kanai, Fumitaka Yanagisawa, Renjian Zhang

Radiation Environment and Medicine 10 ( 1 ) 18 - 25 2021年02月

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 2021年02月

Evaluation of the Influence of Thoron on Portable Radon Measurement Devices

Kazuki Iwaoka, Ryoju Negami, Yuki Tamakuma, Masahiro Hosoda, Lorna Jean, H. Palad, Shinji Tokonami, Chitho P. Feliciano, Reiko Kanda

Philippine Journal of Science 150 ( 1 ) 257 - 261 2021年02月

Car-borne survey for a black shale area and influence of snowfall on absorbed dose rate in air of a coastal area

Yuki Tamakuma, Masahiro Hosoda, Yasutaka Omori, Hiroyuki Nagahama, Tetsuo Ishikawa, Michikuni Shimo, Shinji Tokonami

Radiation Environment and Medicine 10 ( 2 ) 2021年01月

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

International Journal of Environmental Research and Public Health 18 ( 3 ) 998 2021年01月

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 2021年01月

Radon Activity Concentrations in Natural Hot Spring Water: Dose Assessment and Health Perspective

Eka Djatnika Nugraha, Masahiro Hosoda, June Mellawati, Untara Untara, Ilsa Rosianna, Yuki Tamakuma, Oumar Bobbo Modibo, Chutima Kranrod, Kusdiana Kusdiana, Shinji Tokonami

International Journal of Environmental Research and Public Health 18 ( 3 ) 920 2021年01月

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 2021年01月

An Improved Passive CR-39-Based Direct 222Rn/220Rn Progeny Detector

Jun Hu, Guosheng Yang, Chutima Kranrod, Kazuki Iwaoka, Masahiro Hosoda, Shinji Tokonami

International Journal of Environmental Research and Public Health 17 ( 22 ) 8569 2020年11月

Natural Radioactivity of Laterite and Volcanic Rock Sample for Radioactive Mineral Exploration in Mamuju, Indonesia

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

Geosciences 10 ( 9 ) 376 2020年09月

Machine learning as a tool for analysing the impact of environmental parameters on the radon exhalation rate from soil

Masahiro Hosoda, Shinji Tokonami, Takahito Suzuki, Miroslaw Janik

Radiation Measurements 138 106402 2020年09月

Caesium Retention Characteristics of Knifc–Pan Resin from River Water

Miklos Hegedus, Hirofumi Tazoe, Guosheng Yang, Yuki Tamakuma, Masahiro Hosoda, Naofumi Akata, Shinji Tokonami

Radiation Protection Dosimetry 190 ( 3 ) 320 - 323 2020年08月

Japanese population dose from natural radiation

Yasutaka Omori, Masahiro Hosoda, Fumiaki Takahashi, Tetsuya Sanada, Shigekazu Hirao, Koji Ono, Masahide Furukawa

Journal of Radiological Protection 40 ( 3 ) 99 - 140 2020年08月

A Comparative Study of the Outdoor Absorbed Dose Rate in Air by In-situ and Soil-sampling-based Measurement Methods

Chutima Kranrod, Supitcha Chanyotha, Phongphaeth Pengvanich, Rawiwan Kritsananuwat, Masahiro Hosoda, Shinji Tokonami

Radiation Environment and Medicine 9 ( 2 ) 98 - 104 2020年08月

Environmental Monitoring of 134Cs and 137Cs Levels in Namie Town in 2018 and 2019

Miklos Hegedus, 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

Passive-Type Radon Monitor Constructed Using a Small Container for Personal Dosimetry

Yuki Tamakuma, Chutima Kranrod, Takahito Suzuki, Yuki Watanabe, Thamaborn Ploykrathok, Ryoju Negami, Eka Djatnika Nugraha, Kazuki Iwaoka, Miroslaw Janik, Masahiro Hosoda, Shinji Tokonami

International Journal of Environmental Research and Public Health 17 5660 2020年08月

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年08月

Assessment of radiation dose from the consumption of bottled drinking water in Japan

A. Kinahan, M. Hosoda, K. Kelleher, T. Tsujiguchi, N. Akata, S. Tokonami, L. Currivan, L. L. Vintró

International Journal of Environmental Research and Public Health 17 2020年07月

Importance of Discriminative Measurement for Radon Isotopes and Its Utilization in the Environment and Lessons Learned from Using the RADUET Monitor

Chutima Kranrod, Yuki Tamakuma, Masahiro Hosoda, Shinji Tokonami

International Journal of Environmental Research and Public Health 17 ( 11 ) 4141 2020年06月

Impact of Wind Speed on Response of Diffusion-Type Radon-Thoron Detectors to Thoron

Yasutaka Omori, Yuki Tamakuma, Eka Djatnika Nugraha, Takahito Suzuki, Miki Arian Saputra, Masahiro Hosoda, Shinji Tokonami

International Journal of Environmental Research and Public Health 17 ( 9 ) 3178 2020年05月

The parameter sensitivity analysis of the theoretical model of a CR-39 based direct 220Rn/222Rn progeny monitor

Jun Hu, Masahiro Hosoda, Shinji Tokonami

Nukleonika 65 ( 2 ) 95 - 98 2020年05月

Exposures from radon, thoron, and thoron progeny in high background radiation area in Takandeang, Mamuju, Indonesia

Miki Arian Saputra, Tri Purwanti, Rokhmat Arifianto, Roza Indra laksmana, Richard P. Hutabarat, Masahiro Hosoda, Shinji Tokonami

Nukleonika 65 ( 2 ) 89 - 94 2020年05月

Lung dose esrimation of 222Rn and 220Rn progeny based on IMBA Professional Software

Jun Hu, Kazuki Iwaoka, Masahiro Hosoda, Shinji Tokonami

Radiation Environment and Medicine 9 ( 1 ) 21 - 27 2020年02月

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

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

Radiation Environment and Medicine 9 ( 1 ) 13 - 20 2020年02月

Japanese population dose from natural radiation

Yasutaka Omori, Masahiro Hosoda, Fumiaki Takahashi, Tetsuya Sanada, Shigekazu Hirao, Koji Ono, Masahide Furukawa

Journal of Radiological Protection 2020年02月

Natural radiation exposure in geothermal power plant in the Philippines

K. Iwaoka, L.J.H. Palad, C.O. Mendoza, E.B. Enriquez, R.J. Aniago, T.Y. Garcia, M. Hosoda, S. Tokonami, C.P. Feliciano, R. Kanda

Proceedings of ENVIRA2019 39 - 41 2020年02月

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 ) 2020年02月

The importance of direct progeny measurements for correct estimation of inhalation dose due to radon and thoron

Saidou, Bineng Guillaume Samuel, Shinji Tokonami, Masahiro Hosoda, Tchuente Siaka Yvette Flore, Hamadou Issa, Takahito Suzuki, Hiromi Kudo, Oumarou Bouba

Frontiers Public Health 2020年02月

Exposures from radon, thoron, and thoron progeny in high background radiation area in Takandeang, Mamuju, Indonesia

Miki Arian Saputra, Tri Purwanti, Rokhmat Arifianto, Roza Indra laksmana, Richard P. Hutabarat, Masahiro Hosoda, Shinji Tokonami

Nukleonika journal 2020年02月

Car-borne survey of natural background gamma radiation in western, eastern and southern Thailand

Chutima Kranrod, Supitcha Chanyotha, Phongphaegh Pengvanich, Rawiwan Kritsananuwat, Thamaborn Ploykrathok, Phongyut Sriploy, Masahiro Hosoda, Shinji Tokonami

Radiation Protection Dosimetry 2019年12月

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 2019年11月

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 ( 3-4 ) 527 - 530 2019年10月

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年10月

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 (accepted) 184 ( 3-4 ) 518 - 522 2019年10月

Investigation of external radiation doses during residents‘ special visit to Namie Town, Fukushima Prefecture

T. Tsujiguchi, Y. Shiroma, T. Suzuki, Y. Tamakuma, M. Yamaguchi, K. Iwaoka, M. Hosoda, S. Tokonami, I. Kashiwakura

Radiation Protection Dosimetry 184 ( 3-4 ) 514 - 517 2019年10月

Natural radiation exposure to the public in mining and ore bearing regions of Cameroon

Saidou, 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 ( 3-4 ) 391 - 396 2019年10月

Annual effective dose assessment due to radon and thoron progenies in dwellings of Kilimambogo, Kenya

C. Nyambura, S. Tokonami, N.O. Hashim, M.W. Chege, T. Suzuki, H. Kudo, M. Hosoda

Radiation Protection Dosimetry 184 ( 3-4 ) 430 - 434 2019年10月

Evaluation of a radon air monitor in the measurement of radon concentration in water in comparison with a liquid scintillation counter

Shoko Higuchi, Yuuki Kamishiro, Maki Ishihara, Yumi Yasuoka, Yasunori Mori, Masahiro Hosoda, Kazuki Iwaoka, Shinji Tokonami, Rikiya Takahashi, Miroslaw Janik, Jun Muto, Hiroyuki Nagahama, Takahiro Mukai

Radiation Protection Dosimetry 184 ( 3-4 ) 426 - 429 2019年10月

Identification of novel biomarkers for early detection of lung cancer in high Radiation areas: A preliminary study on proteomic analysis

N. Autsavapromporn, N. Dukaew, A. Wongnoppavich, B. Chewaskulyong, S. Roytrakul, P. Klunklin, K. Phantawong, I. Chitapanarux, P. Sripun, R. Kritsananuwat, S. Amphol, C. Pornnumpa, T. Suzuki, H. Kudo, M. Hosoda, S. Tokonami

Radiation Protection Dosimetry 184 ( 3-4 ) 426 - 429 2019年10月

Comparison of bacterial flora in river sediments from Fukushima and Aomori Prefectures by 16S rDNA sequence analysis

K. Yamanouchi, T. Tsujiguchi, Y. Shiroma, T. Suzuki, Y. Tamakuma, M. Yamaguchi, Y. Sakamoto, M. Hegedus, K. Iwaoka, M. Hosoda, I. Kashiwakura, T. Miura, S. Tokonami

Radiation Protection Dosimetry 184 ( 3-4 ) 504 - 509 2019年10月

Development of calculation tool for respiratory tract deposition depending on aerosols particle distribution

Kazuki Iwaoka, Masahiro Hosoda, Shinji Tokonami, Eliza B. Enriquez, Lorna Jean H. Palad, Reiko Kanda

Radiation Protection Dosimetry 184 ( 3-4 ) 388 - 390 2019年10月

Occupational Natural Radiation Exposure at the Uranium Deposit of Kitongo, Cameroon

Modibo Oumar Bobbo, Saïdou, Joseph Emmanuel Ndjana Nkoulou IL, Takahito Suzuki, Hiromi Kudo, Masahiro Hosoda, Luc Calvin Owono Owono, Shinji Tokonami

Radioisotopes 68 ( 9 ) 621 - 630 2019年09月

Simultaneous measurements of indoor radon and thoron and inhalation dose assessment in Douala City, Cameroon

Takoukam Soh Serge Didier, Saïdou, Shinji Tokonami, Masahiro Hosoda, Takahito Suzuki, Hiromi Kudo, Oumarou Bouba

Isotopes in Environmental and Health Studies 2019年08月

Preliminary Radiological Survey on High Rare-earth Containing Area in San Vicente, Philippines

Kazuki Iwaoka, Lorna Jean H. Palad, Christopher O. Mendoza, Fe M. Dela Cruz, Masahiro Hosoda, Shinji Tokonami, Eliza B. Enriquez, Chitho P. Feliciano, Reiko Kanda

Philippine Journal of Science 148 ( 3 ) 501 - 504 2019年07月

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

Saïdou, Shinji Tokonami, Masahiro Hosoda, Tchuente Siaka Yvette Flore, Ndjana Nkoulou Joseph Emmanuel II, Naofumi Akata, Oumar Bobbo Modibo, Penaye Joseph

Journal of Geochemical Exploration 205 106350 2019年07月

210Po as a source of natural radioactivity in cigarettes distributed in the Philippines

Kazuki Iwaoka, Eliza B. Enriquez, Kazuaki Yajima, Masahiro Hosoda, Shinji Tokonami, Hidenori Yonehara, Teofilo Y. Garcia, Reiko Kanda

Perspectives in Science 12 100400 2019年07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 2019年07月

Absorbed Dose Rates in Air along the Roads in Quezon City, Philippines

Kazuki Iwaoka, Lorna Jean H. Palad, Christopher O. Mendoza, Masahiro Hosoda, Paolo Tristan F. Cruz, Eliza B. Enriquez, Ryan Joseph Aniago, Chitho P. Feliciano, Shinji Tokonami, Reiko Kanda

Philippine Journal of Science 148 ( 2 ) 395 - 399 2019年05月

Radon and Thoron; Radioactive Gases Lurking in Earthen Houses in Rural Kenya

Margaret Chege, Nadir Hashim, Catherine Nyambura, Amidu Mustapha, Masahiro Hosoda, Shinji Tokonami

Frontiers in Public Health 7 ( 113 ) 1 - 6 2019年05月

市販の大気中放射性エアロゾル捕集用フィルタの表面捕集効率及び流量の安定性の評価

玉熊佑紀, 山田椋平, 岩岡和輝, 細田正洋, 床次眞司

保健物理 54 ( 1 ) 5 - 12 2019年04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03月

Simultaneous indoor radon, thoron, and thoron progeny measurements in Betare-Oya gold mining areas, Eastern Cameroon

Ndjana Nkoulou II Joseph Emmanuel, Louis Ngoa Engola, Saïdou, Masahiro Hosoda, Bongue Daniel, Takahito Suzuki, Hiromi Kudo, Njock Kwato, Moïse Godfroy, Shinji Tokonami

Radiation Protection Dosimetry (accepted) 2019年01月

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

Masahiro Hosoda, Kazuki Iwaoka, Shinji Tokonami, Yuki Tamakuma, Yoshitaka Shiroma, Takahiro Fukuhara, Yusuke Imajyo, Jun Taniguchi, Naofumi Akata, Minoru Osanai, Takakiyo Tsujiguchi, Masaru Yamaguchi, Ikuo Kashiwakura

Health Physics 116 ( 1 ) 81 - 87 2019年01月

238Pu/(239+240)Pu activity ratio as an indicator of Pu originating from the FDNPP accident in the terrestrial environment of Fukushima Prefecture

R. Kierepko, S. K. Sahoo, M. Hosoda, S. Tokonami, A. Sorimachi, E. Kim, M. Ohno

Journal of Environmental Radioactivity 196 133 - 140 2018年11月

Natural radioactivity measurements and external dose estimation by car-borne survey in Douala city, Cameroon

S.D. Takoukam Soh, Saïdou, M. Hosoda, J.E. Ndjana Nkoulou II, N. Akata, O. Bouba, S. Tokonami

Radioprotection 2018年11月

Preliminary Development of Thoron Exposure System in the Philippines

Kazuki Iwaoka, Lorna Jean H. Palad, Eliza B. Enriquez, Fe M. dela Cruz, Christopher O. Mendoza, Juanario U. Olivares, Ryan Joseph Aniago, Christian L. dela Sada, Masahiro Hosoda, Shinji Tokonami

Science Diliman 30 ( 2 ) 87 - 95 2018年11月

Short Telomere Length as a Biomarker Risk of Lung Cancer Development Induced by High Radon Levels: A Pilot Study

Narongchai Autsavapromporn, Pitchayaponne Klunklin, Chalat Threeratana, Wirote Tuntiwechapikul, Masahiro Hosoda, Shinji Tokonami

International Journal of Environmental Research and Public Health 15 2152 2018年09月

Thyroid equivalent doses for evacuees and radiological impact from the Fukushima nuclear accident

Shinji Tokonami, Masahiro Hosoda

Radiation Measurements 119 74 - 79 2018年09月

Development of Rapid Sampling System of Atmospheric Water Vapor for Tritium Measurement

Naofumi Akata, Hideki Kakiuchi, Masahiro Tanaka, Nagayoshi Shima, Yoshitaka Shiroma, Shinji Tokonami, Masahiro Hosoda, Yoshio Ishikawa, Masahide Furukawa, Tetsuya Sanada

Plasma and Fusion Research 13 3405064 2018年06月

Concentrations of Chemical Components, Including 210Pb, Present in

Naofumi Akata, Yoshitaka Shiroma, Masahide Furukawa, Akemi Kato, Hideki KakIuchi, Masahiro Hosoda, Yutaka Kanai, Fumitaka Yanagisawa

Japanese Journal of Health Physics 53 ( 1 ) 17 - 22 2018年05月

Air Absorbed Dose Rate Measurements and External Dose Assessment by Car-Borne Survey in the Gold Mining Areas of Betare-Oya, Eastern-Cameroon

Louis Ngoa Engola, Joseph Emmanuel Ndjana Nkoulou II, Masahiro Hosoda, Daniel Bongue, Saïdou, Naofumi Akata, Rosalie Koukong Heya, Moïse Godfroy Kwato Njock, Shinji Tokonami

Japanese Journal of Health Physics 53 ( 1 ) 5 - 11 2018年05月

Numerical modeling of the sources and behaviors of 222Rn, 220Rn and their progenies in the indoor environment—A review

Jun Hu, Guosheng Yang, Miklós Hegedűs, Kazuki Iwaoka, Masahiro Hosoda, Shinji Tokonami

Journal of Environmental Radioactivity 189 40 - 47 2018年03月

Development of Radon and Thoron Exposure Systems at Hirosaki University

Chanis Pornnumpa, Yui Oyama, Kazuki Iwaoka, Masahiro Hosoda, Shinji Tokonami

Radiation Environment and Medicine 7 ( 1 ) 13 - 20 2018年02月

Air Absorbed Dose Rate Measurements and External Dose Assessment

Louis Ngoa Engola, Joseph Emmanuel Ndjana Nkoulou II, Masahiro Hosoda, Daniel Bongue, Saïdou, Naofumi Akata, Rosalie Koukong Heya, Moïse Godfroy Kwato Njock, Shinji Tokonami

Japanese Journal of Health Physics 53 ( 1 ) 200 - 209 2018年01月

バブリング法による水中ラドン濃度測定について

神代悠希, 石原万己, 藤井さとみ, 安岡由美, 細田正洋, 岩岡和輝, 床次眞司, Miroslaw Janik, 武藤潤, 長濱裕幸, 向高弘

Proceedings of the 18th Workshop on Environmental Radioactivity 333 - 338 2017年12月

Investigation on natural radioactivity in a monazite processing plant in Japan

Kazuki Iwaoka, Kazuaki Yajima, Toshikazu Suzuki, Hidenori Yonehara, Masahiro Hosoda, Shinji Tokonami, Reiko Kanda

Health Physics 113 ( 3 ) 220 - 224 2017年09月

Utilization of Monte Carlo Particle Transport Simulation Code on Radiation Emergency Medicine at Hirosaki University

Kazuki Iwaoka, Masahiro Hosoda, Takakiyo Tsujiguchi, Minoru Osanai, Shinji Tokonami, Ikuo Kashiwakura

Radiation Environment and Medicine 6 ( 2 ) 108 - 111 2017年08月

Installation of System at Hirosaki University, Japan, for Estimating Radionuclide Atmospheric Dispersion Levels

Kazuki Iwaoka, Masahiro Hosoda, Shinji Tokonami

Radiation Environment and Medicine 6 ( 2 ) 104 - 107 2017年08月

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

Ryohei Yamada, Yuki Tamakuma, Kazuki Iwaoka, Masahiro Hosoda, Yoshitaka Shiroma,

Applied Radiation and Isotopes 126 79 - 82 2017年08月

Measurements of radon exhalation rate in NORM used as consumer products in Japan

Kazuki Iwaoka, Masahiro Hosoda, Kazuaki Yajima, Shinji Tokonami

Applied Radiation and Isotopes 126 304 - 306 2017年08月

Remediation of Radiocesium-137 Affected Soil Using Napiergrass Under Different Planting Density and Cutting Frequency Regimes

Dong-Jin Kang, Yasuyuki Ishii, Hirofumi Tazoe, Katsunori Isobe, Masao Higo, Masahiro Hosoda, Masatoshi Yamada, Shinji Tokonami

Water, Air, & Soil Pollution 228 ( 226 ) 2017年07月

放射線リスクの正しい理解と知識向上のための消防職員に対する意識調査

葛西幸彦, 工藤ひろみ, 細田正洋, 岩岡和輝, 床次眞司

保健物理 52 ( 2 ) 55 - 60 2017年06月

Consideration on the necessity of tritium limit in foods in Japan— Perspective on the current food regulation

Kazuki Iwaoka, Naofumi Akata, Masahiro Hosoda, Shinji Tokonami

Plasma and Fusion Research 12 1305131 2017年06月

放射線専攻学生を対象とした放射線シミュレーションの教育的有効性の検討

松谷秀哉, 門前暁, 細田正洋, 柏倉幾郎, 加藤博之

弘前大学教養教育開発実践ジャーナル 1 65 - 70 2017年03月

Reduction of Outdoor and Indoor Ambient Dose Equivalent after Decontamination in the Fukushima Evacuation Zones

Hiroko Yoshida-Ohuchi, Takashi Kanagami, Yutaka Naitoh, Mizuki Kameyama, Masahiro Hosoda

Journal of Radiation Protection and Research 42 ( 1 ) 42 - 47 2017年03月

Characteristic of thoron (220Rn) in environment

Masahiro Hosoda, Hiromi Kudo, Kazuki Iwaoka, Ryohei Yamada, Takahito Suzuki, Yuki Tamakuma, Shinji Tokonami

Applied Radiation and Isotopes 120 7 - 10 2017年01月

Radiation dose due to radon and thoron progeny inhalation in high-level natural radiation areas of Kerala, India

Yasutaka Omori, Shinji Tokonami, Sarata K. Sahoo, Tetsuo Ishikawa, Atsuyuki Sorimachi, Masahiro Hosoda, Hiromi Kudo, Chanis Pornnumpa, Raghu Ram K. Nair, Padmavaty Jayalekshmi, Paul Sebastian, Suminori Akiba

Journal of Radiological Protection 37 111 - 126 2016年12月

沖縄県玉泉洞における洞内大気中ラドンの起源

城間吉貴, 城間勝人, 喜納正剛, 細田正洋, 安岡由美, 赤田尚史, 古川雅英

保健物理 51 ( 4 ) 218 - 226 2016年12月

Early Intake of Radiocesium by Residents Living Near the TEPCO Fukushima Dai-Ichi Nuclear Power Plant after the Accident. Part 1: Internal Doses Based on Whole-body Measurements by NIRS

Eunjoo Kim, Osamu Kurihara, Naoaki Kunishima, Takashi Nakano, Kotaro Tani, Misao Hachiya, Takumaro Momose, Tetsuo Ishikawa, Shinji Tokonami, Masahiro Hosoda, Makoto Akashi

Health Physics 111 ( 5 ) 451 - 464 2016年11月

Generation and migration of 222Rn in BaSO4 precipitate samples and implications for their analysis for 226Ra by gamma spectrometry

Masahiro Hosoda, Kevin Kelleher, Michael Murray, Paul McGinnity, Olwyn Hanley, Jennie Wong, Lorraine Currivan

Radiation Environmental and Meadicine 5 ( 2 ) 22 - 28 2016年08月

Indoor radiocaesium contamination in residential houses within evacuation areas after the Fukushima nuclear accident

Hiroko Yoshida-Ohuchi, Takashi Kanagami, Yasushi Satoh, Masahiro Hosoda, Yutaka Naitoh, Mizuki Kameyama

Scientific Reports 6 ( 26412 ) 2016年05月

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

Chanis Pornnumpa, Kazuki Iwaoka, Naofumi Akata, Masahiro Hosoda, Atsuyuki Sorimachi, Shinji Tokonami

Japanese Journal of Health Physics 51 ( 2 ) 115 - 121 2016年04月

一般市民の放射線の基礎知識に関する調査－浪江町民と青森県民の比較から－

工藤ひろみ，床次眞司，細田正洋，岩岡和輝，葛西幸彦

保健物理 51 ( 2 ) 92 - 97 2016年04月

Environmental radiation monitoring and external dose estimation in Aomori Prefecture after the Fukushima Daiichi Nuclear Power Plant accident

Masahiro Hosoda, Kazumasa Inoue, Mitsuaki Oka, Yasutaka Omori, Kazuki Iwaoka, Shinji Tokonami

Japanese Journal of Health Physics 51 ( 1 ) 41 - 50 2016年03月

Estimation of external and internal doses resulting from the use of artificial radon spa sources

Masahiro Hosoda, Tetsuo Ishikawa, Yumi Yasuoka, Sarata K. Sahoo, Shinichi Katoh, Masayuki Ogawa, Susumu Ogashiwa, Kazuki Iwaoka, Shinji Tokonami

Radiation Environment and Medicine 5 ( 1 ) 46 - 52 2016年02月

A comparison of dose from natural radionuclides and artificial radionuclides after the Fukushima nuclear accident

Masahiro Hosoda, Shinji Tokonami, Yasutaka Omori, Tetsuo Ishikawa, Kazuki Iwaoka

Journal of Radiation Research 57 ( 4 ) 422 - 430 2016年02月

Temporal variation of caesium activity (134Cs, 137Cs) in Fukushima soil core

Suchismita Mishra, Hideki Arae, Atsuyuki Sorimachi, Masahiro Hosoda, Shinji Tokonami, Tetsuo Ishikawa, Sarata K. Sahoo

Radiation Protection Dosimetry 167 ( 1-3 ) 344 - 347 2015年11月

Comparative dosimetry for radon and thoron in high background radiation areas in China

Hiromi Kudo, Shinji Tokonami, Yasutaka Omori, Tetsuo Ishikawa, Kazuki Iwaoka, Sarata K. Sahoo, Naofumi Akata, Masahiro Hosoda, Paitoon Wanabongse, Chanis Pornnumpa, Qunfu Sun, Xiao Li, Suminori Akiba

Radiation Protection Dosimetry 167 ( 1-3 ) 155 - 159 2015年11月

Absorbed dose rate in air in metropolitan Tokyo before the Fukushima Daiichi Nuclear Power Plant accident

Kazumasa Inoue, Masahiro Hosoda, Masahiro Fukushi, Masahide Furukawa, Shinji Tokonami

Radiation Protection Dosimetry 167 ( 1-3 ) 231 - 234 2015年11月

Estimation of radon emanation coefficient for representative soils in Okinawa, Japan

Yoshitaka Shiroma, Masahiro Hosoda, Tetsuo Ishikawa, Sarata K. Sahoo, Shinji Tokonami, Masahide Furukawa

Radiation Protection Dosimetry 167 ( 1-3 ) 147 - 150 2015年11月

A comparison study of commercially available survey meters for measurement of gamma-rays

Shingo Terashima, Ayumi Abe, Yukihiko Kasai, Taiga Kawamura, Taichi Kitaya, Kazuki Kubo, Shogo Sakata, Hidenori Sugisawa, Masataka Narita, Megumi Hattori, Daisuke Masuda, Kazuki Iwaoka, Masahiro Hosoda, Tetsuo Ishikawa, Shinji Tokonami

Radiation Emergency Meadicine 4 ( 2 ) 29 - 34 2015年09月

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年09月

Survey of radioactive contamination along Mt. Fuji’s climbing routes due to TEPCO’s Fukushima Daiichi Nuclear Power Plant accident

Kazuki Iwaoka, Kazuaki Yajima, Hiroshi Yasuda, Masahiro Hosoda, Shinji Tokonami, Hidenori Yonehara

Radiation Emergency Meadicine 4 ( 2 ) 21 - 24 2015年09月

岐阜県東濃地域における環境放射線調査

細田正洋, 赤田尚史, 下道國, 古川雅英, 岩岡和輝, 床次眞司

RADIOISOTOPES 64 ( 7 ) 465 - 474 2015年07月

Novel method for estimation of the indoor-to-outdoor airborne radioactivity ratio following the Fukushima Daiichi Nuclear Power Plant accident

Yanliang Tan, Tetsuo Ishikawa, Miroslaw Janik, Shinji Tokonami, Masahiro Hosoda, Atsuyuki Sorimachi, Kimberlee Kearfott

Science of the Total Environment 536 25 - 30 2015年07月

The predictive factors of cytotoxic damage in radioactive iodine treatment of differentiated thyroid cancer patients

Satoru Monzen, Yasushi Mariya, Andrzej Wojcik, Chika Kawamura, Ayumi Nakamura, Mitsuru Chiba, Masahiro Hosoda, Yoshihiro Takai

Molecular and Clinical Oncology 3 ( 3 ) 692 - 698 2015年05月

Changes in radon emanation coefficients for building Materials with steps of their manufacturing process

Kazuki Iwaoka, Masahiro Hosoda, Napakan Suwankot, Yasutaka Omori, Tetsuo Ishikawa, Shinji Tokonami

Radiation Protection Dosimetry 167 ( 1-3 ) 135 - 138 2015年04月

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 ) 2015年04月

On the calibration of a radon exhalation monitor based on the electrostatic collection method and accumulation chamber

Yanliang Tan, Shinji Tokonami, Masahiro Hosoda

Journal of Environmental Radioactivity 144 9 - 14 2015年03月

Changes of Ambient Gamma-ray Dose Rate in Katsushika Ward, Metropolitan Tokyo before and after the Fukushima Daiichi Nuclear Power Plant Accident

Kazumasa Inoue, Masahiro Hosoda, Yoshitaka Shiroma, Masahide Furukawa, Masahiro Fukushi, Kazuki Iwaoka, Shinji Tokonami

Journal of Radioanalytical and Nuclear Chemistry 303 ( 3 ) 2159 - 2163 2015年03月

Characteristics of the Environmental Radon and Thoron in Minamidaito-jima, a Comparatively High Background Radiation Island in Japan

Yoshitaka Shiroma, Masahiro Hosoda, Tetsuo Ishikawa, Sarata Kumar Sahoo, Shinji Tokonami, Masahide Furukawa

Radiation Emergency Medicine 4 ( 1 ) 27 - 33 2015年02月

A proposal to evaluate radioactivity of cement contained coal fly from China national standard: “Limits of radionuclides in building materials”

Yanliang Tan, Fudong Liu, Shinji Tokonami, Detao Xiao, Jian Shan, Qingzhi Zhou, Quan Tang, Masahiro Hosoda, Hiromi Kudo-Yokota, Chanis Pornnumpa, Paitoon Wanabongse

Journal of Radioanalytical and Nuclear Chemistry [epub ahead of print] 2015年01月

Distribution and retention of Cs radioisotopes in soil affected by Fukushima nuclear plant accident

Suchismita Mishra, Hideki Arae, Atsuyuki Sorimachi, Masahiro Hosoda, Shinji Tokonami, Tetsuo Ishikawa, Sarata Kumar Sahoo

Journal of Soils and Sediments 15 374 - 380 2015年01月

Reduction factors for wooden houses due to external γ-radiation based on in situ measurements after the Fukushima nuclear accident

Hiroko Yoshida-Ohuchi, Masahiro Hosoda, Takashi Kanagami, Masaki Uegaki, Hideo Tashima

Scientific Reports 4 ( 7541 ) 1 - 6 2014年12月

Radiation Dose Reduction Efficiency of Buildings after the Accident at the Fukushima Daiichi Nuclear Power Station

Satoru Monzen, Masahiro Hosoda, Minoru Osanai, Shinji Tokonami

PLoS ONE 9 ( 7 ) DOI: 10.1371/journal.pone.0101650 2014年07月

Absorbed Dose Rate in Air at the Bunkyo-cho Campus of Hirosaki University

Masahiro Hosoda, Yoshinori Fukui, Chanis Pomnumpa, Atsuyuki Sorimachi, Tetsuo Ishikawa, Masanori Yachi, Ayano Nara, Hiromi Yokota, Shinji Tokonami

Radiation Emergency Medicine 3 ( 1 ) 59 - 62 2014年02月

Simultaneous sampling of indoor and outdoor airborne radioactivity after the Fukushima Daiichi Nuclear Power Plant accident

Tetsuo Ishikawa, Atsuyuki Sorimachi, Hideki Arae, Sarata Kumar Sahoo, Miroslaw Janik, Masahiro Hosoda, Shinji Tokonami

Environmental Science & Technology 48 ( 4 ) 2430 - 2435 2014年01月

福島県浪江町の里山に大気沈着した放射性セシウムの森林内分布と挙動

黒島碩人, 緒方裕子, 大河内博, 床次眞司, 反町篤行, 細田正洋

大気環境学会誌 49 ( 2 ) 93 - 100 2014年01月

Estimation of internal exposure of the thyroid to ¹³¹I on the basis of ¹³⁴Cs accumulated in the body among evacuees of the Fukushima Daiichi Nuclear Power Station accident

Masahiro Hosoda, Shinji Tokonami, Suminori Akiba, Osamu Kurihara, Atsuyuki Sorimachi, Tetsuo Ishikawa, Takumaro Momose, Takashi Nakano, Yasushi Mariya, Ikuo Kashiwakura

Environment International 61 73 - 76 2013年10月

An Investigation of Gamma-ray Dose Rate in the Central Area of Hirosaki City, Japan

Hironori Yoshino, Hideki Obara,Teruaki Maeda, Akiyoshi Yamada, Ken-ichiro Watanabe, Masahiro Hosoda, Atsuyuki Sorimachi, Tetsuo Ishikawa, Shinji Tokonami

Radiation Emergency Medicine 2 ( 2 ) 72 - 76 2013年08月

Investigation of radon and thoron concentrations in a landmark skyscraper in Tokyo

Kazumasa Inoue, Masahiro Hosoda, Shinji Tokonami, Tetsuo Ishikawa, Masahiro Fukushi

Journal of Radioanalytical and Nuclear Chemistry 298 ( 3 ) 2009 - 2015 2013年07月

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 ) 1 - 6 2013年07月

Naturally occurring radionuclides and rare earth elements in weathered Japanese soil samples

Sarata K. Sahoo, Masahiro Hosoda, Ganesh Prasad, Hiroyuki Takahashi, Atsuyuki Sorimachi, Tetsuo Ishikawa, Shinji Tokonami, Shigeo Uchida

Acta Geophysica 61 ( 4 ) 876 - 885 2013年05月

広域定点における福島第一原子力発電所事故由来の空間線量率の継時変化

下瀬川正幸, 細田正洋

群馬県立県民健康科学大学紀要 8 1 - 8 2013年04月

福島第一原発事故後の住家の空間線量率低減を目的とした遮蔽材の効果

吉田浩子, 細田正洋, 齋藤順子, 小林育夫, 平澤典保

RADIOISOTOPES 62 ( 4 ) 203 - 210 2013年04月

Radon concentration of outdoor air: measured by an ionization chamber for radioisotope monitoring system at radioisotope institute

Yukari Tajika, Yumi Yasuoka, Hiroyuki Nagahama, Toshiyuki Suzuki, Yoshimi Homma, Tetsuo Ishikawa, Shinji Tokonami, Takahiro Mukai, Miroslaw Janik, Atsuyuki Sorimachi, Masahiro Hosoda

Journal of Radioanalytical and Nuclear Chemistry 295 ( 3 ) 1709 - 1714 2013年02月

Thyroid screening survey on children after Fukushima Daiichi Nuclear Power Plant accident

Yoichiro Hosokawa, Masahiro Hosoda, Akifumi Nakata, Masanori Kon, Mayumi Urushizaka, Mitsuaki Yoshida

Radiation Emergency Medicine 2 ( 1 ) 82 - 86 2013年01月

Comparative analysis of radon, thoron and thoron progeny concentration measurements

Miroslaw Janik, Shinji Tokonami, Chutima Kranrod, Atsuyuki Sorimachi, Tetsuo Ishikawa, Masahiro Hosoda, James Mclaughlin, Byung-Uck Chang, Yong Jae Kim

Journal of Radiation Research 2013年01月

Activity concentration of natural radionuclides and radon and thoron exhalation rates in rocks used as decorative wall coverings in Japan

Kazuki Iwaoka, Masahiro Hosada, Hiroyuki Tabe, Tetsuo Ishikawa, Shinji Tokonami, Hidenori Yonehara

Health Physics 104 ( 1 ) 41 - 50 2013年01月

Concentration of 3H 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 ) 1 - 3 2012年12月

Measurement of radon exhalation rate and gamma ray dose rate in Hiroshima Prefecture

Ganesh Prasad, Tetsuo Ishikawa, Masahiro Hosoda, Sarata K. Sahoo, Norbert Kavasi, Atsuyuki Sorimachi, Shinji Tokonami, Shigeo Uchida

Radiation Protection Dosimetry 152 ( 1-3 ) 130 - 134 2012年11月

Environmental radiation in Izu-Ooshima Island After the accident of Fukushima Daiichi Nuclear Power Plant

Kazumasa Inoue, Masahiro Hosoda, Masato Sugino, Hideo Simizu, Arisa Akimoto, Kenta Hori, Tetsuo Ishikawa, Sarata K. Sahoo, Shinji Tokonami, Hiroto Narita, Masahiro Fukushi

Radiation Protection Dosimetry 152 ( 1-3 ) 234 - 237 2012年11月

Radioactive pollution in the terrestrial environment released by the accident of Fukushima Daiichi Nuclear Power Plant

Hirofumi Tazoe, Masahiro Hosoda, Atsuyuki Sorimachi, Shinji Tokonami, Masatoshi Yamada

Radiation Protection Dosimetry 152 ( 1-3 ) 198 - 203 2012年11月

Characteristics of Radon and Thoron Exhalation Rates in Okinawa, Subtropical Region of Japan

Yoshitaka Shiroma, Shogo Kina, Takuyou Fujitani, Masahiro Hosoda, Atsuyuki Sorimachi, Tetsuo Ishikawa, Sarata K. Sahoo, Shinji Tokonami, Masahide Furukawa

Radiation Protection Dosimetry 152 ( 1-3 ) 184 - 188 2012年11月

Estimation of radon diffusion coefficients in soil using an updated experimental system

Ganesh Prasad, Tetsuo Ishikawa, Masahiro Hosoda, Atsuyuki Sorimachi, Miroslaw Janik, Kumar Sahoo, Shinji Tokonami, Shigeo Uchida

Review of Scientific Instruments 83 093503 2012年08月

Thyroid doses for evacuees from the Fukushima nuclear accident

Shinji Tokonami, Masahiro Hosoda, Suminori Akiba, Atsuyuki Sorimachi, Ikuo Kashiwakura, Mikhail Balonov

Scientific Reports 2: 507 1 - 4 2012年07月

Anomalous change in atmospheric radon concentration sourced from broad crustal deformation: A case study of the 1995 Kobe earthquake

Yumi Yasuoka, Yusuke Kawada, Yasutaka Omori, Hiroyuki Nagahama, Tetsuo Ishikawa, Shinji Tokonami, Masahiro Hosoda, Tetsuo Hashimoto, Masaki Shinogi

Applied Geochemistry 27 825 - 830 2012年03月

Visualization of Radiocesium Distribution in Contaminated Soil from Kashiwa City, Chiba, Japan

Masahiro Hosoda, Masahiro Fukushi, Hideo Shimizu, Shinji Tokonami

Radiation Emergency Medicine 1 ( 1-2 ) 117 - 120 2012年02月

Seasonal and diurnal variations of radon/thoron exhalation rate in Kanto-loam area in Japan

Ganesh Prasad, Tetsuo Ishikawa, Masahiro Hosoda, Atsuyuki Sorimachi, Sarata K. Sahoo, Norbert Kavasi, Shinji Tokonami, Masato Sugino, Shigeo Uchida

Journal of Radioanalytical and Nuclear Chemistry 292 1385 - 1390 2012年01月

Individual radiation exposure dose due to support activities at safe shelters in Fukushima Prefecture

Satoru Monzen, Masahiro Hosoda, Shinji Tokonami, Minoru Osanai, Hironori Yoshino, Yoichiro Hosokawa, Mitsuaki Yoshida, Masahiroshi Yamada, Yasushi Asari, Kei Satoh, Ikuo Kashiwakura

PLoS ONE 6 ( 11 ) 2011年11月

The time variation of dose rate artificially increased by the Fukushima nuclear crisis

Masahiro Hosoda, Shinji Tokonami, Atsuyuki Sorimachi, Satoru Monzen, Minoru Osanai, Masatoshi Yamada, Ikuo Kashiwakura, Suminori Akiba

Scientific Reports 1: 87 1 - 5 2011年09月

イメージングプレートを用いたクルックス管からの漏洩線量分布測定

藤淵俊王, 井上創, 小原哲, 加藤英幸, 小林育夫, 細田正洋

日本放射線安全管理学会誌 10 ( 1 ) 40 - 45 2011年07月

Radiological characterization of commercially available “radon spa sources”

Tetsuo Ishikawa, Masahiro Hosoda, Atsuyuki Sorimachi, Shinji Tokonami, Shin-ichi Katoh, Susumu Ogashiwa

Journal of Radioanalytical and Nuclear Chemistry 287 ( 3 ) 709 - 713 2011年03月

Simultaneous Measurement of Radon and Thoron Released from Building Materials Used in Japan

Nabil M. Hassan, Masahiro Hosoda, Kazuki Iwaoka, Atsuyuki Sorimachi, Miroslaw Janik, Chutima Kranrod, Sarata K. Sahoo, Tetsuo Ishikawa, Hidenori Yonehara, Masahiro Fukushi, Shinji Tokonami

Progress in Nuclear Science and Technology 1 ( 1 ) 404 - 407 2011年02月

Thorium, Uranium and Rare Earth Elements Concentration in Weathered Japanese Soil Samples

Sarata K. Sahoo, Masahiro Hosoda, Sadatoshi Kamagata, Atsuyuki Sorimachi, Tetsuo Ishikawa, Shinji Tokonami, Shigeo Uchida

Progress in Nuclear Science and Technology 1 ( 1 ) 416 - 419 2011年02月

Development and application of continuous measurement system of radon exhalation rate

Masahiro Hosoda, Tetsuo Ishikawa, Atsuyuki Sorimachi, Shinji Tokonami, Shigeo Uchida

Review of Scientific Instruments 82 ( 1 ) 015101-1 - 015101-4 2011年01月

The effect of water content on the radon emanation coefficient for some building materials used in Japan

Nabil M. Hassan, Tetsuo Ishikawa, Masahiro Hosoda, Kazuki Iwaoka, Atsuyuki Sorimachi, Sarata K. Sahoo, Miroslaw Janik, Chutima Kranrod, Hidenori Yonehara, Masahiro Fukushi, Shinji Tokonami

Radiation Measurements 46 232 - 237 2011年01月

Thoron exhalation rate in many areas in Japan

Michikuni Shimo, Yuu Ishimori, Masahiro Hosoda, Shinji Tokonami

Radiation Protection Dosimetry 141 ( 4 ) 473 - 476 2010年10月

Effective dose to miners due to radon an thoron in a manganese mine in Hungary

Norbert Kavasi, Vigh Tamas, Atsuyuki Sorimachi, Tetsuo Ishikawa, Shinji Tokonami, Masahiro Hosoda

Radiation Protection Dosimetry 141 ( 4 ) 432 - 435 2010年10月

Separately measuring radon and thoron concentrations exhaled from soil using AlphaGUARD and liquid scintillation methods

Yumi Yasuoka, Atsuyuki Sorimachi, Tetsuo Ishikawa, Masahiro Hosoda, Shinji Tokonami, Nobutoshi Fukuhori, Janik Miroslaw

Radiation Protection Dosimetry 141 ( 4 ) 412 - 415 2010年10月

A comparative study of thorium activity in NORM and high background radiation area

Sahoo Sarata Kumar, Tetsuo Ishikawa, Shinji Tokonami, Atsuyuki Sorimachi, Janik Miroslaw, Nabil M. Hassan, Masahiro Hosoda, Kranrod Chutima, Chanyotha Supitcha, Vangeline Parami, Hidenori Yonehara, Ramola Rakesh, Masahide Furukawa

Radiation Protection Dosimetry 141 ( 4 ) 416 - 419 2010年10月

In situ measurement on thoron exhalation rate in Okinawa, Japan

Yoshitaka Shiroma, Noki Isa, Masahiro Hosoda, Atsuyuki Sorimachi, Tetsuo Ishikawa, Shinji Tokonami, Masahide Furukawa

Radiation Protection Dosimetry 141 ( 4 ) 457 - 461 2010年10月

Influence of soil environmental parameters on thoron exhalation rate

Masahiro Hosoda, Shinji Tokonami, Atsuyuki Sorimachi, Tetsuo Ishikawa, Sahoo Sarata Kumar, Masahide Furukawa, Yoshitaka Shiroma, Yumi Yasuoka, Janik Miroslaw, Norbert Kavasi, Shigeo Uchida, Michikuni Shimo

Radiation Protection Dosimetry 141 ( 4 ) 420 - 423 2010年10月

気中ラドン濃度簡易測定器の開発

下道國, 岡光昭, 山田純也, 細田正洋, 小西敏春, 渡井勝範, 阪本文男, 山崎直, 西本昭義

保健物理 45 ( 3 ) 244 - 252 2010年09月

環境移行パラメータ推定支援ツールを用いたラドン散逸率の評価の検討

細田正洋, 床次眞司, 石川徹夫, Sarata K. Sahoo, 反町篤行, Janik Miroslaw, Norbert Kavasi, 内田滋夫

Radioisotopes 59 ( 7 ) 423 - 428 2010年07月

Assessment of the natural radioactivity using two techniques for the measurement of radionuclide concentration in building materials used in Japan

Nabil M. Hassan, Tetsuo Ishikawa, Masahiro Hosoda, Atsuyuki Sorimachi, Shinji Tokonami, Masahiro Fukushi, Sarata K. Sahoo

Journal of Radioanalytical and Nuclear Chemistry 283 ( 1 ) 15 - 21 2010年01月

Anomalously High Radon Concentrations in a Dwelling in Okinawa, Japan

Atsuyuki Sorimachi, Chutima Kranrod, Shinji Tokonami, Tetsuo Ishikawa, Masahiro Hosoda, Miroslaw Janik, Reina Shingaki, Masahide Furukawa

Radioisotopes 58 ( 12 ) 807 - 813 2009年12月

Simultaneous measurements of radon and thoron exhalation rates and comparison with values calculated by UNSCEAR equation

Masahiro Hosoda, Atsuyuki Sorimachi, Yumi Yasuoka, Tetsuo Ishikawa, Sarata K. Sahoo, Masahide Furukawa, Nabil M.Hassan, Shinji Tokonami, Shigeo Uchida

Journal of Radiation Research 50 ( 4 ) 333 - 343 2009年06月

ハンガリーの修復作業中のウラン鉱山における環境放射能・線の調査

細田正洋, 反町篤行, 石川徹夫, Sarata Kumar Sahoo, Norbert Kavasi, Tibor Kovacs, 床次眞司

保健物理 44 ( 2 ) 191 - 197 2009年06月

222Rn exhalation rate from Egyptian building materials using active and passive methods

Nabil M. Hassan, Masahiro Hosoda, Tetsuo Ishikawa, Shinji Tokonami, Masahiro Fukushi, Abdel F. Hafez, Emad Khalil

Japenese Joural of Helth Physics 44 ( 1 ) 106 - 111 2009年03月

Experimental system to evaluate the effective diffusion coefficient of radon

Masahiro Hosoda, Shinji Tokonami, Atsuyuki Sorimachi, Miroslaw Janik, Tetsuo Ishikawa, Yoshinori Yatabe, Junya Yamada, Shigeo Uchida

Review of Scientific Instruments 80 ( 1 ) 013501-1 - 013501-5 2009年01月

屋内ラドンの高濃度化の要因調査- 熊本市の場合

細田正洋, 反町篤行, 石川徹夫, 中村祐也, 床次眞司

保健物理 43 ( 4 ) 349 - 353 2008年12月

The effect of geological and geographical features on environmental radiation

Junya Yamada, Mitsuaki Oka, Michikuni, Shimo, Kazuyuki Minami, Susumu, Minato, Masato Sugino, Masahiro Hosoda, Masahiro Fukushi

The Natural Radiation Environment 1034 498 - 502 2008年11月

Radon and Thoron Exhalation rate map in Japan

Masahiro Hosoda, Michikuni Shimo, Masato Sugino, Masahide Furukawa, Masahiro Fukushi, Kazuyuki Minami, Kazutaka Ejiri

The Natural Radiation Environment 1034 177 - 180 2008年11月

東京都内地下鉄線の空間γ線線量率

小川雅之, 細田正洋, 福士政広, 小柏進

Radioisotopes 57 ( 5 ) 313 - 320 2008年05月

2006年小笠原群島の父島・母島における環境放射線および放射能の調査

福士政広, 細田正洋, 杉野雅人, 南一幸, 古川雅英, 下道國

首都大学東京小笠原研究年報 ( 31 ) 59 - 64 2008年03月

飲用水とともに摂取したラドンの体内挙動

細田正洋, 石川徹夫, 床次眞司, 金賀愛子, 伊藤亮輔, 内田直希, 荻原俊輔, 笠喜洋, 川内隆行, 石井忠

保健物理 43 ( 2 ) 221 - 226 2007年09月

関東地方の地表ガンマ線分布

杉野雅人, 細田正洋, 古川雅英, 福士政広, 下道國

Radioisotopes 56 ( 6 ) 315 - 320 2007年06月

Effect of soil moisture content on radon and thoron exhalation

Masahiro Hosoda，Michikuni Shimo， Masato Sugino，Masahide Furukawa，Masahiro Fukushi

Journal of Nuclear Science and Technology 44 ( 4 ) 664 - 672 2007年04月

ラドン・トロン散逸率における土壌の物理・化学的特性の実験的解釈

細田正洋, 山本裕右, 原田和正, 郡寿也, 福士政広, 下道國

保健物理 42 ( 1 ) 89 - 97 2007年03月

ラドン・トロン散逸率と空間ガンマ線線量率および天然放射性核種濃度との関係

細田正洋, 下道國, 杉野雅人, 古川雅英, 福士政広

保健物理 41 ( 1 ) 18 - 26 2006年04月

三宅島の環境放射線(能)

細田正洋, 福士政広, 杉野雅人, 古川雅英, 下道國

保健物理 40 ( 4 ) 365 - 371 2005年12月

診断用X線における後方散乱線低減物質の検討

井上一雅, 細田正洋, 福士政広

日本保健科学学会誌 7 ( 3 ) 218 - 224 2004年12月

ラドン・トロン散逸率のin situ測定およびその地質的解釈

細田正洋, 下道國, 杉野雅人, 古川雅英, 福士政広

保健物理 39 ( 3 ) 206 - 214 2004年09月

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