2020 - 2023 Variations of seawater chemistry across the most severe oceanic anoxia and mass extinction event
2017 - 2020 High primal productivity and volcanic activity at the most severe mass extinction event
2018 - 2019 原油中のナフタレン組成を指標に用いた地下深部の石油根源岩評価法の確立
Papers (19):
Takeshi Nakajima, Hideki Iwano, Tohru Danhara, Takafumi Hirata, Kenta Asahina, Koji U. Takahashi, Yasuaki Hanamura. U-Pb and fission-track dating of Miocene hydrocarbon source rocks in the Akita Basin, Northeast Japan, and implications for the timing of paleoceanographic changes in the sea of Japan. Island Arc. 2023. 32. 1
Kenta Asahina, Satoshi Takahashi, Ryosuke Saito, Kunio Kaiho, Yasuhiro Oba. Maleimide index: a paleo-redox index based on fragmented fossil-chlorophylls obtained by chromic acid oxidation. RSC Advances. 2022. 12. 48. 31061-31067
Kenta Asahina, Takeshi Nakajima, Koji U. Takahashi, Miyuki Kobayashi, Yasuaki Hanamura. Spatio-temporal changes in the depositional environment of Miocene organic rich mudstones in the Akita Basin deduced from biomarker analysis. GEOCHEMICAL JOURNAL. 2022. 56. 1. 1-15
Kyoshiro Hiki, Kenta Asahina, Kota Kato, Takahiro Yamagishi, Ryo Omagari, Yuichi Iwasaki, Haruna Watanabe, Hiroshi Yamamoto. Acute Toxicity of a Tire Rubber-Derived Chemical, 6PPD Quinone, to Freshwater Fish and Crustacean Species. Environmental Science & Technology Letters. 2021. 8. 9. 779-784
Kenta Asahina, Koji U. Takahashi, Yuichiro Suzuki, Takeshi Nakajima, Miyuki Kobayashi. Effect of Maturation on the Dimethyl Naphthalene Indicator Used to Evaluate the Source Organic Type of Crude Oil. Chemistry Letters. 2021. 50. 9. 1718-1721
Kenta Asahina, Norihiko Saeki. Japan's CCS Policy and Global Trends. Chemical Engineering of Japan. 2024. 88. 07. 301-304
Kenta Asahina, Tadashi Nemoto. Non-targeted 1H NMR profiling: A novel methodology for multiple-approaches to characteristic analysis of crude oil. The 55th CCOP Annual Session, Proceedings of the Thematic Session. 2020. 11-13
Source rock potential of Miocene siliceous mudstone distributed in western Aomori Prefecture and northern Yamagata Prefecture
(石油技術協会特別講演会・春季講演会(シンポジウム・個人講演)要旨集 2020)
The Japanese Association for Petroleum Technology
, GEOCHEMICAL SOCIETY OF JAPAN
, THE JAPANESE ASSOCIATION OF ORGANIC GEOCHEMISTS
, THE CHEMICAL SOCIETY OF JAPAN