Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Keigo Toyomura"'
Autor:
Masashi Murakami, Eisuke Watanabe, Tsutomu Ohtsuki, Keigo Toyomura, Takuya Yokokita, Yuki Yasuda, Aiko Kino, Toshiaki Mitsugashira, Kosuke Morita, Minghui Huang, Koichi Takamiya, Yoshitaka Kasamatsu, Takashi Yoshimura, Hiromitsu Haba, Yudai Shigekawa, Yukiko Komori, H. Kikunaga, Atsushi Shinohara, J. Kanaya
Publikováno v:
Nature Chemistry. 13:226-230
All superheavy elements (SHEs), with atomic numbers (Z) ≥104, have been artificially synthesized one atom at a time and their chemical properties are largely unknown. Because these heavy nuclei have short lifetimes as well as extremely low producti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cc3957b264459931db0107b6f23b0d6a
https://doi.org/10.1038/s41557-020-00634-6
https://doi.org/10.1038/s41557-020-00634-6
Autor:
Keigo Toyomura, Eisuke Watanabe, Takashi Yoshimura, Yuki Yasuda, Takuya Yokokita, N. Kondo, Atsushi Shinohara, Yoshitaka Kasamatsu, Hideyuki Itabashi, Hidemi Ninomiya, Yuki Kuboki, Masahiro Nagase, Hiromitsu Haba, Yudai Shigekawa, Yukiko Komori, K. Nakamura
Publikováno v:
Solvent Extraction and Ion Exchange. 38:318-327
Chemical studies of transactinide elements (atomic number Z ≥ 104) are of great importance to understand the relativistic effects; however, the experimental methodology is limited owing to the sing...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7876b48462e12a1c00dc655c1107cc2e
https://doi.org/10.1080/07366299.2020.1726075
https://doi.org/10.1080/07366299.2020.1726075
Autor:
Keigo Toyomura, Takashi Yoshimura, Yoshitaka Kasamatsu, K. Nakamura, Atsushi Shinohara, Naruto Takahashi, Hiromitsu Haba, Yudai Shigekawa, Yukiko Komori, Aiko Kino, Takuya Yokokita, Kosuke Morita, Masashi Murakami, Yuki Yasuda
Publikováno v:
Dalton Transactions. 45:18827-18831
We successfully observed the equilibrium state of the chemical reactions for superheavy elements on a one-atom-at-a-time scale; we investigated the time dependence of the extraction behaviour of element 104, Rf. The distribution coefficient of Rf in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::361d40c975b012930f592f6c3a15e5d5
https://doi.org/10.1039/c6dt03497g
https://doi.org/10.1039/c6dt03497g
Autor:
K. Nakamura, Yoshitaka Kasamatsu, Minghui Huang, Atsushi Shinohara, J. Kanaya, Naruto Takahashi, Keigo Toyomura, Y. Kudou, Aiko Kino, Hiromitsu Haba, Yukiko Komori, Takuya Yokokita, Takashi Yoshimura
Publikováno v:
Radiochimica Acta. 103:513-521
Solid-liquid extraction of the group 4 elements Zr and Hf, which are homologues of Rf (Z = 104), and Th, a pseudo homologue, by triisooctylamine (TIOA) from HCl solutions was performed by batch method. After examining the time required to reach extra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d9209ab1c2c465fcc423c8dcb730c814
https://doi.org/10.1515/ract-2014-2283
https://doi.org/10.1515/ract-2014-2283
Autor:
Takashi Yoshimura, Naruto Takahashi, Keigo Toyomura, Atsushi Shinohara, H. Kikunaga, Takuya Yokokita, N. Shiohara, Yukiko Komori, Y. Kudou, Aiko Kino, Koichi Takamiya, Toshiaki Mitsugashira, Yoshitaka Kasamatsu, Tsutomu Ohtsuki, H. Haba
Publikováno v:
Journal of Nuclear and Radiochemical Sciences. 14:7-11
cle measurement is required to be performed. Herein, we propose a new protocol for rapid preparation of coprecipitates of superheavy elements with Sm hydroxide. The coprecipitation behaviors of Zr, Hf, and Th (homologues of element 104, Rf) with Sm h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::613804a072f17b808fa9e926acc6eb5b
https://doi.org/10.14494/jnrs.14.7
https://doi.org/10.14494/jnrs.14.7
Autor:
Keigo Toyomura, Hiromitsu Haba, M. Huang, Y. Kudou, Yukiko Komori, Atsushi Shinohara, Yoshitaka Kasamatsu, Atsushi Toyoshima, Takuya Yokokita, Naruto Takahashi, K. Nakamura, J. Kanaya
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 303:1385-1388
We studied solid–liquid extraction behavior of carrier-free Mo and W radiotracers onto an Aliquat 336-loaded resin from HCl solutions toward extraction chromatography experiments of element 106, seaborgium (Sg). Distribution coefficients (K d) of M
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a9fe85c7334cd930d38901322eb98f46
https://doi.org/10.1007/s10967-014-3476-4
https://doi.org/10.1007/s10967-014-3476-4
Autor:
Hiromitsu Haba, Yudai Shigekawa, Yoshitaka Kasamatsu, Kosuke Morita, Takuya Yokokita, Minghui Huang, Atsushi Shinohara, Yutaka Ezaki, Keigo Toyomura, J. Kanaya, Takashi Yoshimura
Publikováno v:
Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine. 118
To establish a new methodology for superheavy element chemistry, the coprecipitation behaviors of 34 elements with samarium hydroxide were investigated using multitracer produced by a spallation of Ta. The chemical reactions were rapidly equilibrated
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2be78818b59891c3c8293df7c741b7f2
https://pubmed.ncbi.nlm.nih.gov/27623042
https://pubmed.ncbi.nlm.nih.gov/27623042