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Micheau, C.; Ueda, Yuki; Motokawa, Ryuhei; Akutsu, Kazuhiro*; Yamada, Norifumi*; Yamada, Masako*; Moussaoui, S. A.*; Makombe, E.*; Meyer, D.*; Berthon, L.*; et al.
Journal of Molecular Liquids, 401, p.124372_1 - 124372_12, 2024/05
Supramolecular organization of extractant molecules impacts metal ions separation behavior. Probing bulk and interfacial structures of the relevant systems is expected to provide key insights into the metal ion selectivity and kinetic aspects. The supramolecular features of two solvent extraction systems based on malonamide extractants THMA in toluene and DBMA in n-heptane were studied using small-angle X-ray scattering for the organic bulk phases, as well as interfacial tension and neutron reflectivity measurements for the interfaces. In the bulk solution, THMA forms dimeric/trimeric associates but no aggregates in toluene, while DBMA forms large aggregates in n-heptane. On the other hand, THMA accumulates in a diffuse layer at the interface at high THMA concentration, whereas DBMA forms a compact but thinner layer. After Pd(II) extraction, the thickness of interfacial layers decreases in the case of THMA, and totally vanishes in the case of DBMA. Based on these new structural information, two mechanisms are proposed for Pd(II) and Nd(III) extraction with malonamides. In toluene, THMA associates slightly accumulate in the vicinity of the interface, then coordinate Pd(II) and diffuse into the organic bulk phase. In n-heptane, DBMA aggregates adsorb at the interface then pick up Nd(III) cations in their polar cores and finally diffuse into the bulk.
Shimokita, Keisuke*; Yamamoto, Katsuhiro*; Miyata, Noboru*; Nakanishi, Yohei*; Shibata, Motoki*; Takenaka, Mikihito*; Yamada, Norifumi*; Seto, Hideki*; Aoki, Hiroyuki; Miyazaki, Tsukasa*
Soft Matter, 19(11), p.2082 - 2089, 2023/03
Times Cited Count:0 Percentile:0(Chemistry, Physical)Yoshimune, Wataru*; Kikkawa, Nobuaki*; Yoneyama, Hiroaki*; Takahashi, Naoko*; Minami, Saori*; Akimoto, Yusuke*; Mitsuoka, Takuya*; Kawaura, Hiroyuki*; Harada, Masashi*; Yamada, Norifumi*; et al.
ACS Applied Materials & Interfaces, 14(48), p.53744 - 53754, 2022/11
Times Cited Count:6 Percentile:59.75(Nanoscience & Nanotechnology)Shimokita, Keisuke*; Yamamoto, Katsuhiro*; Miyata, Noboru*; Arima-Osonoi, Hiroshi*; Nakanishi, Yohei*; Takenaka, Mikihito*; Shibata, Motoki*; Yamada, Norifumi*; Seto, Hideki*; Aoki, Hiroyuki; et al.
Langmuir, 38(41), p.12457 - 12465, 2022/10
Times Cited Count:0 Percentile:0(Chemistry, Multidisciplinary)Akutsu-Suyama, Kazuhiro*; Yamada, Norifumi*; Ueda, Yuki; Motokawa, Ryuhei; Narita, Hirokazu*
Applied Sciences (Internet), 12(3), p.1215_1 - 1215_10, 2022/02
Times Cited Count:1 Percentile:28.33(Chemistry, Multidisciplinary)no abstracts in English
Nemoto, Fumiya*; Yamada, Norifumi*; Hino, Masahiro*; Aoki, Hiroyuki; Seto, Hideki*
Soft Matter, 18(3), p.545 - 553, 2022/01
Times Cited Count:0 Percentile:0(Chemistry, Physical)Ikami, Takaya*; Watanabe, Yuki*; Ogawa, Hiroki*; Takenaka, Mikihito*; Yamada, Norifumi*; Ouchi, Makoto*; Aoki, Hiroyuki; Terashima, Takaya*
ACS Macro Lett (Internet), 10(12), p.1524 - 1528, 2021/12
Times Cited Count:7 Percentile:48.3(Polymer Science)Miyazaki, Tsukasa*; Shimokita, Keisuke*; Yamamoto, Katsuhiro*; Aoki, Hiroyuki; Yamada, Norifumi*; Miyata, Noboru*
Langmuir, 36(49), p.15181 - 15188, 2020/12
Times Cited Count:6 Percentile:31.74(Chemistry, Multidisciplinary)Ito, Kanae; Harada, Masashi*; Yamada, Norifumi*; Kudo, Kenji*; Aoki, Hiroyuki; Kanaya, Toshiji*
Langmuir, 36(43), p.12830 - 12837, 2020/11
Times Cited Count:13 Percentile:58.64(Chemistry, Multidisciplinary)Nakajima, Kenji; Harjo, S.; Yamada, Norifumi*; Oikawa, Kenichi; Kajimoto, Ryoichi
JAEA-Review 2018-032, 43 Pages, 2019/02
A series of meetings to discuss future neutron/muon sources and instruments at Materials and Life Science Experimental Facility (MLF) in Japan Proton Accelerator Research Complex (J-PARC) has been held since 2017. Each of the neutron instrument groups in MLF proposed required features for future instruments, while addressing issues of the current instruments and facilities. This report compiles the presentation materials presented by the neutron instrument groups in the meetings to help future discussion for the coming MLF.
Nakajima, Kenji; Kawakita, Yukinobu; Ito, Shinichi*; Abe, Jun*; Aizawa, Kazuya; Aoki, Hiroyuki; Endo, Hitoshi*; Fujita, Masaki*; Funakoshi, Kenichi*; Gong, W.*; et al.
Quantum Beam Science (Internet), 1(3), p.9_1 - 9_59, 2017/12
The neutron instruments suite, installed at the spallation neutron source of the Materials and Life Science Experimental Facility (MLF) at the Japan Proton Accelerator Research Complex (J-PARC), is reviewed. MLF has 23 neutron beam ports and 21 instruments are in operation for user programs or are under commissioning. A unique and challenging instrumental suite in MLF has been realized via combination of a high-performance neutron source, optimized for neutron scattering, and unique instruments using cutting-edge technologies. All instruments are/will serve in world-leading investigations in a broad range of fields, from fundamental physics to industrial applications. In this review, overviews, characteristic features, and typical applications of the individual instruments are mentioned.
Yamada, Norifumi*; Takeda, Masayasu; Yamazaki, Dai
Hamon, 24(4), p.288 - 295, 2014/11
no abstracts in English
Yamada, Nobuto*; Ishigaki, Koichi*; Yamaguchi, Shinji*; Narita, Norifumi*; Matsuoka, Toshiyuki; Hodotsuka, Yasuyuki; Matsuoka, Toshifumi*
Shadan Hojin Butsuri Tansa Gakkai Dai-117-Kai (Heisei-19-Nendo Shuki) Gakujutsu Koenkai Koen Rombunshu, p.146 - 148, 2007/10
Seismic interferometry synthesizes the Green's function between two receivers by calculating cross-correlation of records measured at their locations. In Japan Atomic Energy Agency(JAEA), Seismic Interferometry using blasting vibration caused by the shafts excavation had been carried out to investigate the geologic structure in the surrounding area. The result was identical to the existing seismic reflection section. In this study, we applied this technique to long time measured microtremor. The result was also identical to the results of existing section and seismic interferometry using blasting vibration caused by the shafts excavation.
Takeuchi, Shinji; Todaka, Norifumi; Oyamada, Kiyoshi*
ABSTRACTS 28/39-29/3, 0 Pages, 1998/00
None
Ueda, Yuki; Micheau, C.; Motokawa, Ryuhei; Tokunaga, Kohei; Akutsu, Kazuhiro*; Yamada, Norifumi*
no journal, ,
no abstracts in English