- 2016/04 - 現在 National Agricultural and Food Research Organization Institute for Agro-Environmental Sciences, NARO, Division of Informatics and Inventory, Soil Inventory Unit Senior Researcher
- 2004 - 2007 National Institute for Agro-Environmental Sciences
- 2004 - 2007 National Institute for Agro-Environmental Sciences,
- 2007 - National Institute for Agro-Environmental Sciences
- 2007 - - National Institute for Agro-Environmental Sciences,
- 2001 - 2004 The University of Tokyo Research Center for Nuclear Science and Technology
- 2001 - 2004 Research Center for Nuclear Science and Technology,
- 1999 - 2001 日本学術振興会 特別研究員(PD)
- 1999 - 2001 Research Fellow of the Japan Society for the
- Soil Environment Division, Senior Researcher
- Group, Soil Chemistry unit, Researcher
- Department of Environment Chemistry, Heavy Metal
- The Univ. of Tokyo. Researcher
- Promotion of Science
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AMS研究協会
, Japan Humic Substances Society
, 森林立地学会
, 日本第四紀学会
, 日本ペドロジー学会
, 日本土壌肥料学会
, The Japanese Society of Forest Environment
, Japan Association for Quaternary Research
, Japanese Society of Pedology
, Japan Society of Science and Plant Nutrition