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.

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)

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)