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Research / 研究業績

Publications / 論文

2022年

  • ​Urai A., Takano Y., Matsui Y., Iwata H., Miyairi Y., Yokoyama Y., Miyabara Y., Ohkouchi N., and Park H.D. Origin of Deep Methane from Active Faults along the Itoigawa–Shizuoka Tectonic Line between the Eurasian and North American Plates: 13C/12C and 14C/12C Methane Profiles from a Pull-Apart Basin at Lake Suwa. ACS Earth and Space Chemistry, 2022, 6(7), 1689-1697.  

     DOI: 10.1021/acsearthspacechem.1c00392 (open access)

​2021年

  • 高野淑識，浦井暖史，金子雅紀，大河内直彦，補酵素F430を経由するメタン生成とメタン酸化の2核種炭素同位体フィンガープリント法の展開：地球深部での炭素循環．Isotope News, 2021, 778, 36-40.

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  • Urai A., Matsushita M., Park H.D., Imachi H., Ogawara M., Iwata H., Kaneko M., Ogawa N.O., 

     Ohkouchi N., and Takano Y. Detection of planktonic coenzyme factor 430 in a freshwater lake:

     Small-scale analysis for probing archaeal methanogenesis. Progress in Earth and Planetary 　   

     Science, 2021b, 8, 62.

     DOI: org/10.1186/s40645-021-00450-7 (open access)

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  • ​Urai A., Takano Y., Imachi Y., Ishii S., Matsui Y., Ogawara M., Tasumi E., Miyairi Y., Ogawa N.O., Yoshimura T., Inagaki F., Yokoyama Y., Kawano K., Murai D., Park H.D., and Ohkouchi N. Origin of methane associated with a unique community of microorganisms in an organic- and iodine-rich aquifer. ACS Earth and Space Chemistry, 2021a, 5(1), 1-11. 

     DOI: 10.1021/acsearthspacechem.0c00204 (open access)

2019年

  • ​Urai A. and Park H.D. Difference in the foraging strategy between Daphnia and Copepods in Shirakoma-ike: evidence from 15N/14N of amino acids. Researches in Organic Geochemistry, 2019, 35 (2), 37-43.

     DOI: 10.20612/rog.35.2_37 (open access)

2018年

  • Urai A., Takahashi K., Chakaraishi Y. and Fukushima K.  Algal-derived 24-ethylcholesta-5,22-dien-3β-ol (stigmasterol) is frequently found in high-molecular-weight dissolved organic matter (HMW-DOM) during summer in freshwater and brackish lakes. Geochemical Journal, 2018, 52, e15-20.​ DOI: 10.2343/geochemj.2.0528 (open access)

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