Search Results - "USUI, Tomohiro"

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    Searching for life on Mars and its moons by Hyodo, Ryuki, Usui, Tomohiro

    “…Sample-return missions will look for extraterrestrial life and biomarkers on Mars and Phobos The scientific exploration of Mars over the past several decades…”
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    A lower limit of atmospheric pressure on early Mars inferred from nitrogen and argon isotopic compositions by Kurokawa, Hiroyuki, Kurosawa, Kosuke, Usui, Tomohiro

    Published in Icarus (New York, N.Y. 1962) (01-01-2018)
    “…•Isotopic composition of early atmosphere recorded in ALH 84001 has been reported.•Taking escape/replenishment processes into account, atmospheric evolution is…”
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    The Importance of Phobos Sample Return for Understanding the Mars-Moon System by Usui, Tomohiro, Bajo, Ken-ichi, Fujiya, Wataru, Furukawa, Yoshihiro, Koike, Mizuho, Miura, Yayoi N., Sugahara, Haruna, Tachibana, Shogo, Takano, Yoshinori, Kuramoto, Kiyoshi

    Published in Space science reviews (01-06-2020)
    “…Phobos and Deimos occupy unique positions both scientifically and programmatically on the road to the exploration of the solar system. Japan Aerospace…”
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    Membraneless polyester microdroplets as primordial compartments at the origins of life by Jia, Tony Z., Chandru, Kuhan, Hongo, Yayoi, Afrin, Rehana, Usui, Tomohiro, Myojo, Kunihiro, Cleaves, H. James

    “…Compartmentalization was likely essential for primitive chemical systems during the emergence of life, both for preventing leakage of important components,…”
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    In-situ preservation of nitrogen-bearing organics in Noachian Martian carbonates by Koike, Mizuho, Nakada, Ryoichi, Kajitani, Iori, Usui, Tomohiro, Tamenori, Yusuke, Sugahara, Haruna, Kobayashi, Atsuko

    Published in Nature communications (24-04-2020)
    “…Understanding the origin of organic material on Mars is a major issue in modern planetary science. Recent robotic exploration of Martian sedimentary rocks and…”
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    Subduction and atmospheric escape of Earth's seawater constrained by hydrogen isotopes by Kurokawa, Hiroyuki, Foriel, Julien, Laneuville, Matthieu, Houser, Christine, Usui, Tomohiro

    Published in Earth and planetary science letters (01-09-2018)
    “…The hydrogen isotopic (D/H) ratio reflects the global cycling and evolution of water on Earth as it fractionates through planetary processes. We model the…”
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    Transport of impact ejecta from Mars to its moons as a means to reveal Martian history by Hyodo, Ryuki, Kurosawa, Kosuke, Genda, Hidenori, Usui, Tomohiro, Fujita, Kazuhisa

    Published in Scientific reports (27-12-2019)
    “…Throughout the history of the solar system, Mars has experienced continuous asteroidal impacts. These impacts have produced impact-generated Mars ejecta, and a…”
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    Experimental evidence of phase transition of silica polymorphs in basaltic eucrites: implications for thermal history of protoplanetary crust by Kanemaru, Rei, Imae, Naoya, Yamaguchi, Akira, Nakato, Aiko, Isa, Junko, Kimura, Makoto, Nishido, Hirotsugu, Usui, Tomohiro, Mikouchi, Takashi

    Published in Scientific reports (02-11-2024)
    “…Silica polymorphs occur under various pressures and temperature conditions, and their characteristics can be used to better understand the complex metamorphic…”
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    Survey of impact glasses in shergottites searching for Martian sulfate using X-ray absorption near-edge structure by Shidare, Masashi, Nakada, Ryoichi, Usui, Tomohiro, Tobita, Minato, Shimizu, Kenji, Takahashi, Yoshio, Yokoyama, Tetsuya

    Published in Geochimica et cosmochimica acta (15-11-2021)
    “…The surface of Mars has experienced progressive oxidation, resulting in the formation of sulfate minerals as evidenced from surface exploration missions…”
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    Origin of water and mantle–crust interactions on Mars inferred from hydrogen isotopes and volatile element abundances of olivine-hosted melt inclusions of primitive shergottites by Usui, Tomohiro, Alexander, Conel M.O'D., Wang, Jianhua, Simon, Justin I., Jones, John H.

    Published in Earth and planetary science letters (01-12-2012)
    “…Volatile elements have influenced the differentiation and eruptive behavior of Martian magmas and played an important role in the evolution of Martian climate…”
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    Water and Volatile Inventories of Mercury, Venus, the Moon, and Mars by Greenwood, James P., Karato, Shun-ichiro, Vander Kaaden, Kathleen E., Pahlevan, Kaveh, Usui, Tomohiro

    Published in Space science reviews (01-08-2018)
    “…We review the geochemical observations of water, D / H and volatile element abundances of the inner Solar System bodies, Mercury, Venus, the Moon, and Mars. We…”
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    Alternate oscillations of Martian hydrogen and oxygen upper atmospheres during a major dust storm by Masunaga, Kei, Terada, Naoki, Yoshida, Nao, Nakamura, Yuki, Kuroda, Takeshi, Yoshioka, Kazuo, Suzuki, Yudai, Nakagawa, Hiromu, Kimura, Tomoki, Tsuchiya, Fuminori, Murakami, Go, Yamazaki, Atsushi, Usui, Tomohiro, Yoshikawa, Ichiro

    Published in Nature communications (03-11-2022)
    “…Dust storms on Mars play a role in transporting water from its lower to upper atmosphere, seasonally enhancing hydrogen escape. However, it remains unclear how…”
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