Zobrazeno 1 - 10
of 254
pro vyhledávání: '"TAKAYUKI ISHII"'
Publikováno v:
Solids, Vol 5, Iss 3, Pp 394-403 (2024)
Akimotoite, ilmenite-type MgSiO3 high-pressure polymorph can be stable in the lower-mantle transition zone along average mantle and subducting slab geotherms. Significant amounts of Al2O3 can be incorporated into the structure, having the pyrope (Mg3
Externí odkaz:
https://doaj.org/article/54021cb7365f437c922a809c2e382dd2
Publikováno v:
Communications Chemistry, Vol 7, Iss 1, Pp 1-12 (2024)
Abstract Post-spinel-type AB 2O4 compounds are stable at higher pressures than spinel phases. These compounds have garnered much interest in geo- and materials science for their geochemical importance as well as potential application as high ionic co
Externí odkaz:
https://doaj.org/article/8552779dd0e84bf5aa503cdcc2cdee9f
Publikováno v:
Progress in Earth and Planetary Science, Vol 11, Iss 1, Pp 1-9 (2024)
Abstract Water is transported into the deep mantle by subducting slabs, playing important roles in mantle dynamics and evolution. An aluminous hydrous mineral, phase δ with a main component of AlOOH, has been considered an important water carrier in
Externí odkaz:
https://doaj.org/article/108aecfa4d7044cebd88e5af2868cd48
Autor:
Yuka Kobayashi, Yoshiyasu Uchiyama, Shinji Yoshida, Ikuo Saito, Takayuki Ishii, Daisuke Nakajima, Shou Yanagisawa, Masahiko Watanabe
Publikováno v:
Journal of Medical Case Reports, Vol 17, Iss 1, Pp 1-8 (2023)
Abstract Background We report two cases of biceps brachii and brachialis paralysis due to musculocutaneous nerve injury in which elbow joint flexion was reconstructed using rotational transfer of the latissimus dorsi muscle with sutures to the radial
Externí odkaz:
https://doaj.org/article/b4e868eebe0c491cb8c74bbfb10e9583
Autor:
Narangoo Purevjav, Hongzhan Fei, Takayuki Ishii, Giacomo Criniti, Yanhao Lin, Ho‐Kwang Mao, Tomoo Katsura
Publikováno v:
Geophysical Research Letters, Vol 51, Iss 3, Pp n/a-n/a (2024)
Abstract The role of stishovite in transporting water in subducting slabs has been a subject of debate for several decades. Here we investigated stishovite's water solubility and its potential role in water transportation as a function of temperature
Externí odkaz:
https://doaj.org/article/7419bc33a90047d093391e61c031fae6
Autor:
Iuliia Koemets, Biao Wang, Egor Koemets, Takayuki Ishii, Zhaodong Liu, Catherine McCammon, Artem Chanyshev, Tomo Katsura, Michael Hanfland, Alexander Chumakov, Leonid Dubrovinsky
Publikováno v:
Frontiers in Chemistry, Vol 11 (2023)
Silicate perovskite, with the mineral name bridgmanite, is the most abundant mineral in the Earth’s lower mantle. We investigated crystal structures and equations of state of two perovskite-type Fe3+-rich phases, FeMg0.5Si0.5O3 and Fe0.5Mg0.5Al0.5S
Externí odkaz:
https://doaj.org/article/b9c1d2c3990c4077a16bfd10673d05eb
Publikováno v:
Journal of Physics Communications, Vol 8, Iss 6, p 065001 (2024)
We conducted Raman spectroscopy measurements of 4H-SiC and 6H-SiC up to 69 GPa and 1023 K to assess the stability and bonding of SiC at high pressure and temperature. Both optic and acoustic modes were observed at wide pressure and temperature ranges
Externí odkaz:
https://doaj.org/article/fbdb0be47e2644e9be159981ef949182
Autor:
Thomas Meier, Florian Trybel, Saiana Khandarkhaeva, Dominique Laniel, Takayuki Ishii, Alena Aslandukova, Natalia Dubrovinskaia, Leonid Dubrovinsky
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-8 (2022)
The authors use in-situ high pressure nuclear magnetic resonance spectroscopy in diamond anvil cells to show that at all observed H-bond environments undergo a distinct maximum in hydrogen mobility regardless of the structure of the compounds.
Externí odkaz:
https://doaj.org/article/0c87a873890841a2a154880ef8f744c9
Autor:
Robert Farla, Shrikant Bhat, Stefan Sonntag, Artem Chanyshev, Shuailing Ma, Takayuki Ishii, Zhaodong Liu, Adrien Néri, Norimasa Nishiyama, Guilherme Abreu Faria, Thomas Wroblewski, Horst Schulte-Schrepping, Wolfgang Drube, Oliver Seeck, Tomoo Katsura
Publikováno v:
Journal of Synchrotron Radiation, Vol 29, Iss 2, Pp 409-423 (2022)
Penetrating, high-energy synchrotron X-rays are in strong demand, particularly for high-pressure research in physics, chemistry and geosciences, and for materials engineering research under less extreme conditions. A new high-energy wiggler beamline
Externí odkaz:
https://doaj.org/article/bb84a349e9034cf0b3d431ae92f01e7f
Autor:
Thomas Meier, Alena Aslandukova, Florian Trybel, Dominique Laniel, Takayuki Ishii, Saiana Khandarkhaeva, Natalia Dubrovinskaia, Leonid Dubrovinsky
Publikováno v:
Matter and Radiation at Extremes, Vol 6, Iss 6, Pp 068402-068402-10 (2021)
Recent developments in in situ nuclear magnetic resonance (NMR) spectroscopy under extreme conditions have led to the observation of a wide variety of physical phenomena that are not accessible with standard high-pressure experimental probes. However
Externí odkaz:
https://doaj.org/article/1f3371ebf4154fd1a52a193e95afdbb4