Zobrazeno 1 - 10
of 53
pro vyhledávání: '"Fumito Shiraishi"'
Autor:
Fumito Shiraishi, Takayuki Akimoto, Naotaka Tomioka, Yoshio Takahashi, Ryo Matsumoto, Glen T. Snyder
Publikováno v:
Frontiers in Earth Science, Vol 11 (2023)
Recently, microdolomite grains with a diameter of about 30–150 μm were discovered within seep-related shallow gas hydrate in the eastern margin of the Japan Sea, and the preliminary assumption has been that their formation is mediated by microbial
Externí odkaz:
https://doaj.org/article/326f246b38d7467bbba4f676af753b81
Autor:
Go-Ichiro Uramoto, Yuki Morono, Naotaka Tomioka, Shigeyuki Wakaki, Ryoichi Nakada, Rota Wagai, Kentaro Uesugi, Akihisa Takeuchi, Masato Hoshino, Yoshio Suzuki, Fumito Shiraishi, Satoshi Mitsunobu, Hiroki Suga, Yasuo Takeichi, Yoshio Takahashi, Fumio Inagaki
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-10 (2019)
Ferromanganese minerals are abundant in marine environments but the extent of these minerals in subseafloor sediments remains unknown. Here the authors find abundant ferromanganese microparticles in oxic pelagic clays, accounting for 14–16% of the
Externí odkaz:
https://doaj.org/article/2cdd5f8e34424f969e7b82419f23116c
Autor:
Saburo Sakai, Danzhou Yang, Takashi Yasuda, Koichiro Akiyama, Takayoshi Kuga, Akihiro Kano, Fumito Shiraishi, Shota Amekawa, Susumu Ohtsuka, Kazumitsu Nakaguchi, Shyuhei Yamaguchi
Publikováno v:
ACS Omega, Vol 4, Iss 2, Pp 2702-2707 (2019)
Externí odkaz:
https://doaj.org/article/b21fe72b6f61439ebfefec4bb40ff7b3
Autor:
Katsunori Yanagawa, Fumito Shiraishi, Yusuke Tanigawa, Toshinari Maeda, Nurul Asyifah Mustapha, Satoko Owari, Hitoshi Tomaru, Ryo Matsumoto, Akihiro Kano
Publikováno v:
Geosciences, Vol 9, Iss 11, p 463 (2019)
Concretionary carbonates in deep-sea methane seep fields are formed as a result of microbial methane degradation, called anaerobic oxidation of methane (AOM). Recently, active microorganisms, including anaerobic methanotrophic archaea, were discovere
Externí odkaz:
https://doaj.org/article/b0837c991b144037988fd88d43fb2ec1
Publikováno v:
Journal of Sedimentary Research. 93:202-211
In Lagoa Vermelha, Brazil, a lagoonal stromatolite and a saltpan microbial mat are investigated to understand the influence of environmental changes on the decomposition of microbial carbonates. The lagoonal stromatolite, composed mainly of magnesian
Publikováno v:
Coral Reefs and Sea-Level Change: Quaternary Records and Modelling. :39-67
Reefal microbialites are crusts and infills of microbialites developed within primary cavities of late Quaternary coralgal reef frameworks. In spite of many previous studies, factors controlling mesofabric transitions, particularly from laminated to
Publikováno v:
Geological Journal. 57:4122-4138
Autor:
Leonardo Fadel Cury, Jiro Asada, Anelize Manuela Bahniuk, Rafael França de Mattos, Yusaku Hanzawa, Yuki Eno, Asayo Morikawa, Yuki Nakamura, Fumito Shiraishi
Publikováno v:
Sedimentology. 69:592-623
Contributions of abiotic and biotic processes on travertine deposition are still not well understood due to technical difficulties, despite that the travertines draw attention as analogues for ancient microbial carbonates and oil reservoirs. To evalu
Publikováno v:
Geochimica et Cosmochimica Acta. 285:55-69
To evaluate the influences of cyanobacterial extracellular polymeric substances (EPS) on CaCO3 precipitation, calcification experiments were conducted for 48 h (initial values of calcite saturation state and equilibrium CO2 partial pressure were ∼5
Autor:
Fumito Shiraishi, Misa Toda, Yurika Tominaga, Satoshi Mitsunobu, Natsuko Hamamura, Masahiro Sakata
Publikováno v:
Geochimica et Cosmochimica Acta. 274:211-227
In this study, we investigated the microscale behavior of arsenic (As) in an oxic-anoxic interface in laboratory-incubated paddy soil by combining multiple techniques, micro X-ray fluorescence spectrometry combined with micro X-ray absorption fine st