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During the Fukushima Daiichi Nuclear Power Plant accident, tiny particles a few micrometers in diameter, known as highly radioactive cesium-rich microparticles (CsMPs), were released into the environment. Because these particles contain highly concentrated radioactive cesium, understanding their health impacts when inhaled and how they dispersed through the environment has been an important issue. In this study, we analyzed soil samples collected from 100 locations across F

【徵才公告】國立臺灣大學地質科學系地球與環境材料實驗室（宇都宮聡教授） 誠徵專任研究助理 職稱：專任研究助理 工作地點：國立臺灣大學地質科學系　（台北市羅斯福路四段1號） 工作內容：• 協助行政事務（經費核銷、公文處理、文件整理等）• 協助研究計畫執行• 實驗室管理與資料分析• 其他主管交辦事項 應徵資格：• 具學士或碩士學位，理工相關科系尤佳。• 中文為母語，具英語基本溝通與書信能力。• 熟悉電腦操作及 Microsoft Office 應用軟體。• 具責任感、能主動積極處理工作。 薪資待遇：• 依國立臺灣大學專任研究助理薪資標準支給。學士級起薪每月新臺幣36,300元，碩士級起薪每月新臺幣41,500元。• 校外相關工作經驗可納入薪資計算參考。 福利待遇：• 勞保、健保及勞工退休金• 年終獎金（1.5個月薪資，依到職月份比例計算，限12月在職者）• 彈性上下班時間、良好工作環境，以及未來從事科學研究職涯之機會。 到職日期：7月某日（可議） 工作時間：上午8:00～9:00上班／下午5:00～6:00下班（彈性一小時） 應徵方式：請將完整履歷（

Graduate student Kanako Miyazaki has been selected as a recipient of the IAEA Marie Skłodowska-Curie Fellowship (MSCF). The fellowship supports outstanding young women pursuing graduate studies in nuclear science and engineering at universities worldwide and promotes the next generation of female leaders in the nuclear field.

Satoshi Utsunomiya received the 2025 Society Award from the Japan Association of Mineralogical Sciences (JAMS), the highest honor conferred by the society. The award recognizes sustained and internationally significant contributions to the advancement of mineralogical sciences and research on Earth and planetary materials.

Satoshi Utsunomiya was awarded the 2025 Commendation for Science and Technology by the Minister of Education, Culture, Sports, Science and Technology (MEXT), Japan (Research Category). This national honor recognizes individuals or groups who have conducted original research or made inventions with significant potential to advance science and technology in Japan.

Following the 2011 Fukushima Daiichi nuclear accident, we discovered and characterized cesium-rich microparticles (CsMPs) that transport highly concentrated radionuclides in the environment. Using atomic-scale electron microscopy and isotopic analyses, we revealed embedded fuel nanofragments containing uranium and plutonium within these particles. Our work established quantitative methods to track CsMP dispersion and laid the foundation for advanced nuclear forensics.

We investigate how minerals, nanoparticles, and microorganisms interact to control radionuclide mobility at uranium mill tailings sites. Our research revealed nanoscale sequestration of U, As, and Ra through ferrihydrite–silica aggregation and fungal biogenic manganese oxides. By integrating geochemistry and geomicrobiology, we clarify natural attenuation mechanisms relevant to nuclear legacy management.

We apply atomic-resolution electron microscopy to reveal how gold and toxic elements occur at the nanoscale in ore minerals. Our pioneering work demonstrated that “invisible” gold in arsenian pyrite forms nanoparticles controlled by arsenic content and nanoscale phase separation. This nanogeoscience framework is now being applied to gold deposits in Taiwan, including the historic Chinkuashi mining district.

We use atomic-resolution electron microscopy to reveal previously unseen occurrences of trace and radioactive elements in geological and environmental materials. Our work includes the first direct imaging of Pb in Archean zircon and radioactive Cs atoms in solid materials, as well as nanoscale studies of radiation damage in nuclear waste forms. By integrating TEM with NanoSIMS and synchrotron-based analyses, we are establishing new multi-scale approaches in geochemistry.