Zobrazeno 1 - 10
of 169
pro vyhledávání: '"Akira Kouchi"'
Autor:
Hiromasa Niinomi, Tomoya Yamazaki, Hiroki Nada, Tetsuya Hama, Akira Kouchi, Tomoya Oshikiri, Masaru Nakagawa, Yuki Kimura
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-9 (2023)
Abstract Experimentally demonstrating the existence of waters with local structures unlike that of common water is critical for understanding both the origin of the mysterious properties of water and liquid polymorphism in single component liquids. A
Externí odkaz:
https://doaj.org/article/2ebbc915938e4ad5822d9586a5730538
Publikováno v:
The Astrophysical Journal, Vol 944, Iss 2, p 219 (2023)
Methyl mercaptan (CH _3 SH) is one of the S-bearing organic compounds found in the interstellar medium (ISM). In this study, we investigated the surface reactions of solid CH _3 SH with H atoms on amorphous solid water using experimental and computat
Externí odkaz:
https://doaj.org/article/ad744fac99104b508b5c9aa35f31adb9
Autor:
Akira Kouchi, Yuki Kimura, Kensei Kitajima, Hiroyasu Katsuno, Hiroshi Hidaka, Yasuhiro Oba, Masashi Tsuge, Tomoya Yamazaki, Kazuyuki Fujita, Tetsuya Hama, Yukihiro Takahashi, Shunichi Nakatsubo, Naoki Watanabe
Publikováno v:
Frontiers in Chemistry, Vol 9 (2021)
The occurrence of hydrogen atom-ordered form of ice Ih, ice XI, in the outer Solar System has been discussed based on laboratory experiments because its ferroelectricity influences the physical processes in the outer Solar System. However, the format
Externí odkaz:
https://doaj.org/article/60877f5909d34df3a8eeebd7d1147e89
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-8 (2019)
The formation of nucleobases can take place in extraterrestrial environments. Here the authors show the simultaneous synthesis of three purine nucleobases and three pyrimidine from interstellar ice analogues that suggest the evolution from molecular
Externí odkaz:
https://doaj.org/article/2374ec360e3a4fa2b506cc51f856c18c
Publikováno v:
Crystal Growth & Design. 22:6639-6646
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::10701f7e2a02c220f460fa9b060caefe
https://doi.org/10.1021/acs.cgd.2c00851
https://doi.org/10.1021/acs.cgd.2c00851
Autor:
Akira, Kouchi, Takashi, Shimonishi, Tomoya, Yamazaki, Masashi, Tsuge, Naoki, Nakatani, Kenji, Furuya, Hiromasa, Niinomi, Yasuhiro, Oba, Tetsuya, Hama, Hiroyasu, Katsuno, Naoki, Watanabe, Yuki, Kimura
Publikováno v:
Crystal Growth and Chirality-Technologies and Applications ISBN: 9781803550572
Crystal Growth and Chirality-Technologies and Applications
Crystal Growth and Chirality-Technologies and Applications
We observed the formation of CO, CH3OH, and H2O ices using a cryogenic transmission electron microscope, to determine if chiral ice crystals could form under the conditions of interstellar molecular clouds and young stellar objects (protoplanetary di
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6ee00d921270786364464a4808f3e5b1
https://doi.org/10.5772/intechopen.106708
https://doi.org/10.5772/intechopen.106708
Publikováno v:
Chemical Physics. 572:111966
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fdab51db53eeb42108a3816991f3eb9a
https://doi.org/10.1016/j.chemphys.2023.111966
https://doi.org/10.1016/j.chemphys.2023.111966
The activation energy for desorption (Edes) and that for surface diffusion (Esd) of adsorbed molecules on dust grains are two of the most important parameters for the chemistry in the interstellar medium. Although Edes is often measured by laboratory
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::90ca3a8c9343268b769b7013925ce698
http://arxiv.org/abs/2206.07225
http://arxiv.org/abs/2206.07225
Autor:
Bethmini Senevirathne, Naoki Watanabe, Stefan Andersson, H. Hidaka, W. M. C. Sameera, Akira Kouchi, Gunnar Nyman, Muhsen Al-Lbadi
Publikováno v:
The Journal of Physical Chemistry A. 125:387-393
Binding energies of the CH3O radical on hexagonal water ice (Ih) and amorphous solid water (ASW) were calculated using the ONIOM(QM:MM) method. A range of binding energies is found (0.10-0.50 eV), and the average binding energy is 0.32 eV. The CH3O r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dae3abc8ea99923b8d9898b320662c4c
https://doi.org/10.1021/acs.jpca.0c09111
https://doi.org/10.1021/acs.jpca.0c09111
Autor:
Tatsuya Takekoshi, Kianhong Lee, Kah Wuy Chin, Shinsuke Uno, Toyo Naganuma, Shuhei Inoue, Yuka Niwa, Kazuyuki Fujita, Akira Kouchi, Shunichi Nakatsubo, Satoru Mima, Tai Oshima
We report on the cryogenic properties of a low-contraction silicon-aluminum composite, namely Japan Fine Ceramics SA001, to use as a packaging structure for cryogenic silicon devices. SA001 is a silicon--aluminum composite material (75% silicon by vo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9e23170174e40fd8e33e46cc3d4ace85
http://arxiv.org/abs/2204.08111
http://arxiv.org/abs/2204.08111