Converging Science for Sustainability
The 8th Japan-Thailand Bilateral Workshop | STT51-SYMPOSIUM
SP11: Radioecology & Environmental Radioactivity | AORA Workshop
11 - 13 November 2025
Abstract book
Agenda
11 November 2025
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Registration
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Opening remark
(Prof. Dr. Ikuo Kashiwakura, Hirosaki Univ.) and worm welcome remark (Assoc. Prof. Dr. Witaya Wannasuphoprasit, Dean of Faculty of Nuclear Engineering, Chulalongkorn Univ.)
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Introduction to Department of Nuclear Engineering, Faculty of Engineering, Chulalongkorn Univ.
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Introduction to Institute of Radiation Emergency Medicine, Hirosaki Univ. (Dr. Donovan Anderson)
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Refreshment Break
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Advancing Nuclear Science: From Education to Innovation [Chair: Dr. Thititip Tippayamontri, Ph.D., Chulalongkorn Univ., Thailand]
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Invited speaker: Title: Nuclear Education Programs and Research Capabilities at Nuclear Engineering Department, CU, Assoc. Prof. Somboon Rassame, Chulalongkorn Univ., Thailand
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Title: Design and Performance Evaluation of a Rod-Shaped Radioactive Surface Contamination Monitor for Inner Pipe Inspection, Mr. Ren Ichikawa, Kindai Univ., Japan
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Title: Evaluation of Deconvolution Approach for Complex Alpha-Particle Spectra, Mr. Kirari Terasawa, Kindai Univ., Japan
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Title: Development of Flexible and Transparent X-ray Shielding Composites by Dissolving Metals as Ions, Dr. Ryoma Tokonami, Yamagata Univ., Japan
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Lunch
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Environmental Radioactivity and Radiochemical Analysis [Chair: Phachirarat Sola, M.sc, TINT, Thailand]
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Invited speaker: Title: Reconstruction of Ocean Circulation and Continental Inputs in the Indian Ocean: Insights from Nd Isotopes and Rare Earth Elements, Prof. Hirofumi Tazoe, IREM, Hirosaki Univ., Japan
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Title: U-Th-Pb Analysis of Water Sample in Ex-Tin-Mining Area in Bangka, Indonesia, Mr. Radhia Pradana, Hirosaki Univ., Japan
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Title: Establishment of a Determination Method for Sr-90 in Milk Powder Using Extraction Chromatography and LSC, Dr. Rusbani Kurniawan, BRIN, Indonesia.
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Title: Soil Properties Assessment at the AIRID Training Center Coffee Field, Chiang Mai University, Thailand, Khemruthai Kheamsiri, Hirosaki Univ., Japan
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Refreshment Break and Discussion
09:00 a.m. - 09:30 a.m.
09:30 a.m. - 09:45 a.m.
09:45 a.m. - 10:00 a.m.
10:00 a.m. - 10:15 a.m.
10:30 a.m. - 11:00 a.m.
11:00 a.m. - 11:20 a.m.
11:20 a.m. - 11:40 a.m.
11:40 a.m. - 12:00 p.m.
12:00 p.m. - 02:00 p.m.
02:00 p.m. - 02:30 p.m.
02:30 p.m. - 02:50 p.m.
02:50 p.m. - 03:10 p.m.
03:10 p.m. - 03:20 p.m.
03:30 p.m. - 04:00 p.m.
10:15 a.m. - 10:30 a.m.
Session 1
Session 2
Agenda
12 November 2025
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​Tritium and Water Environment Studies [Chair: Dr. Thawatchai Itthipoonthanakorn, Ph.D., OAP, Thailand]
Invited speaker: Title: Distribution and dynamics of Tritium in the environment, Prof. Naofumi Akata, IREM, Hirosaki Univ., Japan
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Title: Development of Tritium Concentration Assessment Using the UFOTRI Model, Ms. Honoka Fukuda, Hirosaki Univ., Japan
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Title: Study of Water Quality and Tritium Concentration in the Ukedo River Catchment, Fukushima Prefecture, Japan, Ms. Yuisa Kitayama, Hirosaki Univ., Japan
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Title: Organically Bound Tritium Analysis of Marine Products in Fukushima Using Ultra-Sensitive Technique, Ms. Haruka Kuwata, Hirosaki Univ., Japan
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Title: An Investigation of Terrestrial Tritium in Fukushima, Japan and Its Implication for Environmental Assessment, Prof. Dr. Shigekazu Hirao, Institute of Environmental Radioactivity, Fukushima University, Japan
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Refreshment Break
Radon, Thoron, and Public Exposure Assessment [Chair: Chutima Kranrod, Ph.D., IREM, Japan]
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Invited speaker: Title: UNSCEAR Report 2025: Evaluation of Public Exposure to Ionizing Radiation – Updated Global Assessment of Radon and Thoron, Prof. Masahiro Hosoda, Hirosaki Univ., Japan
Title: Determination of the Critical Group of Public Members Around Serpong Nuclear Facility for Atmospheric Releases in Normal Conditions Using Representative Person, Mr. Muhammad Muhyidin Farid, BRIN, Indonesia.
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Lunch
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Radon, Thoron, and Public Exposure Assessment [Chair: Chutima Kranrod, Ph.D., IREM, Japan]
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Title: Computational Fluid Dynamics Investigation of Indoor Radon Distribution at Hat Yai Hot Spring Spa in Ranong Province, Thailand, Dr. Dumrongsak Rodphothong, Ramkhamhaeng Univ., Thailand.
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Title: Investigation of Radon Concentration (Rn-222) in Geothermal Springs, the Southern Part of Thailand, Dr. Saroh Niyomdecha, OAP, Thailand
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Title: Characterization of Mask Structure and Its Impact on Filtration of Radon Progeny Aerosols under Controlled Conditions, Ms. Yuna Sakai, Hirosaki Univ., Japan
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Title: Assessment of Radon and Thoron Exposure in a Thai Tourist Cave: Implications for Occupational Health and Management, Ms. Phachirarat Sola, TINT, Thailand
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Refreshment Break
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Innovations in Radiation Detection and Dosimetry [Chair: Donovan Anderson, Ph.D., IREM, Japan]
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Invited speaker: Title: Gold–Hydrogel Nanosensor: A next-generation biodosimetric tool, Dr. Thititip Tippayamontri, Chulalongkorn Univ., Thailand
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Title: Bridging Environmental Radon Exposure to Human Health Risk: An Aerosol-Based Dosimetry Model for the Lungs, Mr. Rungroj Sakulnaeramit, Chulalongkorn Univ., Thailand
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09:00 a.m. - 09:30 a.m.
09:30 a.m. - 09:50 a.m.
09:50 a.m. - 10:10 a.m.
10:10 a.m. - 10:30 a.m.
10:30 a.m. - 10:50 a.m.
10:50 a.m. - 11:05 a.m.
11:05 a.m. - 11:40 a.m.
11:40 a.m. - 12:00 p.m.
12:00 p.m. - 13:30 p.m.
Session 4 Part 2
01:30 p.m. - 01:50 p.m.
01:50 p.m. - 02:10 p.m.
02:30 p.m. - 02:50 p.m.
02:50 p.m. - 03:05 p.m.
03:05 p.m. - 03:35 p.m.
03:35 p.m. - 03:55 p.m.
Session 3
Session 4 Part 1
02:10 p.m. - 02:30 p.m.
Session 5
Agenda
13 November 2025
Radioisotopes and Radiation Applications [Chair : Dr. Eka Djatnika Nugraha, Ph.D., BRIN, Indonesia]
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Invited speaker: Title: Role of radioisotopes as diagnostic tools for Industrial process trouble shooting applications in Thailand, Dr. Dhanaj Saengchantr, Chulalongkorn Univ., Thailand
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Title: The preliminary development of Cesium Iodide-based thin film for alpha radiation detection, Ms. Khemipa Sanklaa, Chulalongkorn Univ., Thailand
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Title: Application of a NaI(Tl) Detector System for Ground Truthing Radiometric Mapping in Mamuju, Indonesia, Dr. Agus Nur Rachman, BRIN, Indonesia.
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Title: Estimation of 137Cs Activity on Cultivated Land for Erosion Studies in the Upper Citarum Watershed: A Physicochemical Soil Properties Approach, Dr. Leons Rixson, BRIN, Indonesia.
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Refreshment Break
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Radioisotopes and Radiation Applications [Chair :Dr. Rawiwan Kritsananuwat, Ph.D., Chulalongkorn Univ, Thailand.]
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Title: Improvement of oxidation stability of biodiesel derived from palm oil via partial hydrogenation using dielectric barrier discharge plasma with crude glycerol as hydrogen donor, Ms. Watcharaporn Pattanasriroj, Chulalongkorn Univ., Thailand
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Title: Radionuclides in Dust from the Eruption of Mount Merapi, Yogyakarta, Indonesia, Mr.Wahyudi, BRIN, Indonesia.
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Title: Assessment of Health Risks Linked to Natural Radionuclides Contained in Vegetables from Ex-Mining and Non-Mining Land, Mr. Evans Azka Fajrianshah, BRIN, Indonesia.
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Closing remarks; (Prof. Dr. Shinji Tokonami, IREM, Hirosaki Univ.)
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Lunch
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AORA executive meeting (In-person and online)