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  1. Article

    Open Access

    High serum alpha-fetoprotein and positive immunohistochemistry of alpha-fetoprotein are related to poor prognosis of gastric cancer with liver metastasis

    Liver metastasis in gastric cancer is incurable. Alpha-fetoprotein-producing gastric cancer has a poor prognosis and is prone to liver metastasis. We investigated the association between preoperative serum alp...

    Yuriko Takayama-Isagawa, Kengo Kanetaka, Shinichiro Kobayashi in Scientific Reports (2024)

  2. Article

    Open Access

    Formation of bridgmanite-enriched layer at the top lower-mantle during magma ocean solidification

    Thermochemical heterogeneities detected today in the Earth’s mantle could arise from ongoing partial melting in different mantle regions. A major open question, however, is the level of chemical stratification...

    Longjian **e, Akira Yoneda, Daisuke Yamazaki, Geeth Manthilake in Nature Communications (2020)

  3. Article

    Open Access

    Effect of cation substitution on bridgmanite elasticity: A key to interpret seismic anomalies in the lower mantle

    Seismological observations show that, in some regions of the lower mantle, an increase in bulk sound velocity, interestingly, occurs in the same volume where there is a decrease in shear velocity. We show that...

    Hiroshi Fukui, Akira Yoneda, Akihiko Nakatsuka, Noriyoshi Tsu**o in Scientific Reports (2016)

  4. Article

    Open Access

    Elastic anisotropy of experimental analogues of perovskite and post-perovskite help to interpret D′′ diversity

    Recent studies show that the D′′ layer, just above the Earth's core–mantle boundary, is composed of MgSiO3 post-perovskite and has significant lateral inhomogeneity. Here we consider the D′′ diversity as related ...

    Akira Yoneda, Hiroshi Fukui, Fang Xu, Akihiko Nakatsuka in Nature Communications (2014)