Zobrazeno 1 - 10
of 194
pro vyhledávání: '"Hiroaki Ohfuji"'
Autor:
Hirokazu Kadobayashi, Satoka Ohnishi, Hiroaki Ohfuji, Yoshitaka Yamamoto, Michihiro Muraoka, Suguru Yoshida, Naohisa Hirao, Saori Kawaguchi-Imada, Hisako Hirai
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
Abstract Hydrocarbon chemistry in the C–O–H system at high pressure and high temperature is important for modelling the internal structure and evolution of giant icy planets, such as Uranus and Neptune, as their interiors are thought to be mainly
Externí odkaz:
https://doaj.org/article/41260e6ebfd14b169c2b1402c818ebb5
Autor:
Binbin Wu, Li Lei, Feng Zhang, Qiqi Tang, Shan Liu, Meifang Pu, Duanwei He, Yuanhua Xia, Leiming Fang, Hiroaki Ohfuji, Tetsuo Irifune
Publikováno v:
Matter and Radiation at Extremes, Vol 6, Iss 3, Pp 038401-038401-9 (2021)
Controlled disordering of substitutional and interstitial site occupation at high pressure can lead to important changes in the structural and physical properties of iron–nickel nitrides. Despite important progress that has been achieved, structura
Externí odkaz:
https://doaj.org/article/c77bcfbb0bab4f6e85cc9b40954e1bb9
Autor:
Naira S. Martirosyan, Konstantin D. Litasov, Sergey S. Lobanov, Alexander F. Goncharov, Anton Shatskiy, Hiroaki Ohfuji, Vitali Prakapenka
Publikováno v:
Geoscience Frontiers, Vol 10, Iss 4, Pp 1449-1458 (2019)
The fate of subducted carbonates in the lower mantle and at the core-mantle boundary was modelled via experiments in the MgCO3-Fe0 system at 70–150 GPa and 800–2600 K in a laser-heated diamond anvil cell. Using in situ synchrotron X-ray diffracti
Externí odkaz:
https://doaj.org/article/5fd91d4914524e9abd3a3216b39ed357
Autor:
Terumi Ejima, Yasuhito Osanai, Masahide Akasaka, Tatsuro Adachi, Nobuhiko Nakano, Yoshiaki Kon, Hiroaki Ohfuji, Jargalan Sereenen
Publikováno v:
Minerals, Vol 8, Iss 5, p 204 (2018)
The oxidation states of Fe within olivine, orthopyroxene, clinopyroxene, and spinel in a spinel lherzolite xenolith from the Tariat Depression, Mongolia were investigated using 57Fe Mössbauer spectroscopy to evaluate the redox condition of the upper
Externí odkaz:
https://doaj.org/article/2f3620eca74746c689dad52c50200f02
Autor:
Leilei Zhang, Fang Peng, Zili Kou, Tetsuo Irifune, Leihao Feng, Li Lei, Meifang Pu, Duanwei He, Yohei Kojima, Lei Qi, Hiroaki Ohfuji, Qiwei Hu
Publikováno v:
Ceramics International. 47:30039-30042
High-hardness TaN compacts with a diameter and height of 6 mm were synthesized through the phase transformation of CoSn-type into WC-type TaN under experimental conditions of high temperature and high pressure. The Vickers hardness of WC-type TaN com
Autor:
Yuichi Inagaki, Hiroki Suga, Hiroaki Ohfuji, Naotaka Tomioka, Masaaki Miyahara, Masashi Yoshida, Takuji Ohigashi, Seiji Kamada, Yu Kodama, Akira Yamaguchi, Eiji Ohtani, Naohisa Hirao, Fumiya Maeda, Itaru Ohira, Takeshi Sakai
Publikováno v:
Meteoritics & Planetary Science. 56:1729-1743
Autor:
Hiroaki Kurishita, Hiroyuki Ishizaki, Hun Chea Jung, Koichi Niikura, Masahiro Onoi, Yutaka Nagasawa, Shunsuke Makimura, Tatsuaki Sakamoto, Hiroaki Ohfuji, Atsuro Kimura
Publikováno v:
Materials Science Forum. 1024:103-109
Tungsten (W) is a principal candidate as target material because of its high density and extremely high melting point. W inherently has a critical disadvantage of its brittleness at around room temperature (low temperature brittleness), recrystalliza
Publikováno v:
Doklady Earth Sciences. 497:227-231
An inclusion of graphite in zircon from the diamond- and tourmaline-bearing rocks of the Kokchetav massif (Northern Kazakhstan) has been studied. The inclusion, associated with diamond crystals, was identified within the marginal part of the zircon g
Publikováno v:
Doklady Earth Sciences. 496:142-145
Mineral inclusions in cubic diamonds from garnet–clinopyroxene rock of the Kokchetav massif were studied. The coexistence of fluid and silicate inclusions in the central part of the diamond of the G0 sample was revealed by means of transmission ele
Publikováno v:
Journal of Mineralogical and Petrological Sciences. 116:203-210