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Journal Articles

Studies on the extraction of soft acid metal species using MIDOA and analogous compounds

Sasaki, Yuji; Saeki, Morihisa; Sugo, Yumi; Ikeda, Yasuhisa*; Kawasaki, Takeshi*; Suzuki, Tomoya*; Ohashi, Akira*

Solvent Extraction Research and Development, Japan, 22(1), p.37 - 45, 2015/05

https://doi.org/10.15261/serdj.22.37
 Times Cited Count：14 Percentile：42.41(Chemistry, Multidisciplinary)

An extractant, methylimino-bis-${it N,N'}$-dioctylacetamide (MIDOA), was used for the extraction of soft acid metals. It was found that MIDOA can extract not only Cr(VI), Mo(VI), W(VI), Tc(VII) and Re(VII), whose metals can form the oxonium anions due to their high oxidation states, but also other metal cations, like Nb(V), Ta(V) and Pd(II). Analogous compounds, imino-bis-${it N,N'}$-dioctylacetamide (IDOA) and methylimino-bis-${it N,N'}$-di-2-ethylhexylacetamide (MIDEHA), are synthesized and compared for their extractability. It is clear that these extractants have almost same or lower $$D$$ values than those for MIDOA. In order to examine the effect on extractability with different donor atoms, TODGA (${it N,N,N',N'}$-tetraoctyl-diglycolamide) and TDGA (${it N,N,N',N'}$-tetraoctyl-tyiodiglycolamide) having oxygen and sulfur donor are employed. The comparison of their extractabilities suggests that the trend of Pd and Re extraction is N $$>$$ S $$>$$ O and N $$>$$ O $$>$$ S, respectively.

Journal Articles

Fabrication of enzyme-degradable and size-controlled protein nanowires using single particle nano-fabrication technique

Omichi, Masaaki*; Asano, Atsushi*; Tsukuda, Satoshi*; Takano, Katsuyoshi*; Sugimoto, Masaki; Saeki, Akinori*; Sakamaki, Daisuke*; Onoda, Akira*; Hayashi, Takashi*; Seki, Shu*

Nature Communications (Internet), 5, p.3718_1 - 3718_8, 2014/04

https://doi.org/10.1038/ncomms4718
 Times Cited Count：35 Percentile：77.73(Multidisciplinary Sciences)

Protein nanowires exhibiting specific biological activities hold promise for interacting with living cells and controlling and predicting biological responses such as apoptosis, endocytosis and cell adhesion. Here we report the result of the interaction of a single high-energy charged particle with protein molecules. Degradation of the human serum albumin nanowires was examined using trypsin. The biotinylated human serum albumin nanowires bound avidin, demonstrating the high affinity of the nanowires. Human serum albumin-avidin hybrid nanowires were also fabricated from a solid state mixture and exhibited good mechanical strength. The biotinylated human serum albumin nanowires can be transformed into nanowires exhibiting a biological function such as avidin-biotinyl interactions and peroxidase activity. The present technique is a versatile platform for functionalizing the surface of any protein molecule with an extremely large surface area.

Journal Articles

Assembly study for JT-60SA tokamak

Shibanuma, Kiyoshi; Arai, Takashi; Hasegawa, Koichi; Hoshi, Ryo; Kamiya, Koji; Kawashima, Hisato; Kubo, Hirotaka; Masaki, Kei; Saeki, Hisashi; Sakurai, Shinji; et al.

Fusion Engineering and Design, 88(6-8), p.705 - 710, 2013/10

https://doi.org/10.1016/j.fusengdes.2012.12.011
 Times Cited Count：10 Percentile：60.75(Nuclear Science & Technology)

Journal Articles

Structural study on 2,2'-(methylimino)bis($$N$$,$$N$$-dioctylacetamide) complex with Re(VII)O$$_{4}$$$$^{-}$$ and Tc(VII)O$$_{4}$$$$^{-}$$ by $$^{1}$$H-NMR, EXAFS and IR spectroscopy

Saeki, Morihisa; Sasaki, Yuji; Nakai, Ayaka*; Ohashi, Akira*; Banerjee, D.*; Scheinost, A. C.*; Foerstendorf, H.*

Inorganic Chemistry, 51(10), p.5814 - 5821, 2012/05

https://doi.org/10.1021/ic3003405
 Times Cited Count：24 Percentile：71.03(Chemistry, Inorganic & Nuclear)

The structures of the complex of 2,2'-(methylimino)bis($$N$$,$$N$$-dioctylacetamide) (MIDOA) with M(VII)O$$_{4}$$$$^{-}$$ (M=Re and Tc), which were prepared by liquid-liquid solvent extraction, were investigated by using $$^{1}$$H-NMR, EXAFS and IR spectroscopy. The results from $$^{1}$$H-NMR and EXAFS provide therefore evidence of M(VII)O$$_{4}$$$$^{-}$$...H$$^{+}$$MIDOA complex formation in the organic solution. The IR spectra of Re(VII)O$$_{4}$$$$^{-}$$...H$$^{+}$$MIDOA and Tc(VII)O$$_{4}$$$$^{-}$$...H$$^{+}$$MIDOA were analyzed based on the structures and the IR spectra calculated at the B3LYP/cc-pVDZ level. Comparison of the observed and calculated IR spectra demonstrates that an intramolecular hydrogen bond is formed in H$$^{+}$$MIDOA and the M(VII)O$$_{4}$$$$^{-}$$ ion interact with H$$^{+}$$MIDOA through multiple C-H$$_{n}$$...O hydrogen bonds.

Journal Articles

Technetium(VII) and rhenium(VII) extraction by a new diamide reagent, 2,2'-(Imino)bis(${it N,N}$-dialkylacetamide) (IDAA)

Sasaki, Yuji; Sugo, Yumi; Saeki, Morihisa; Morita, Yasuji; Ohashi, Akira*

Solvent Extraction Research and Development, Japan, 18, p.69 - 74, 2011/00

http://www.solventextraction.gr.jp/serdj/jurnalpdf/vol18/pp69-74.pdf

The new diamide-type extractant, 2,2-(Imino)bis(${it N,N}$-dialkylacetamide) (IDAA), was developed for Tc recovery. IDAA has a nitrogen donor atom introduced into the center of backbone and shows the tridentate feature by hybrid donor atoms of two carbonyl oxygen and a nitrogen. 2,2-(Methylimino)bis(${it N,N}$-Dioctylacetamide) (MIDOA), 2,2-(Methylimino)bis(${it N,N}$-Didodecylacetamide) (MIDDA), and 2,2-(Imino)bis(${it N,N}$-Didodecylacetamide) (IDDA), the IDAA derivatives, can be dissolved well in n-dodecane, and are readily used in the solvent extraction. In addition to Tc(VII) and Re(VII), Cr(VI), Mo(VI), W(VI), Pd(II) and Pu(IV) can be extracted from nitric acid to n-dodecane by these extractants, therefore IDAA has high extractability with some oxonium anions. The extraction capacity for Re(VII) was measured and more than 37 mM Re(VII) can be extracted by 0.1 M MIDOA.

Journal Articles

Development of a prototype of an autonomous operation system for nuclear power plants

; Saeki, Akira; ; Okusa, Ryoichi

Nuclear Technology, (6), 0 Pages, 1996/00

None

Journal Articles

None

Okusa, Ryoichi; Saeki, Akira; ;

Donen Giho, (93), p.94 - 101, 1995/03

https://jopss.jaea.go.jp/pdfdata/PNC-TN1340-95-001.pdf

None

Journal Articles

Enhancing nuclear power plant operation with the artificial neural network technique

Ugolini, D.; Yoshikawa, Shinji; Saeki, Akira

p,1545$$sim$$1549, p.1545 - 1549, 1995/00

None

Journal Articles

Conceptual design of autonomous operation system for FBR lants

; Saeki, Akira; ; Himeno, Yoshiaki

Mathematical Methods and Supercomputing in Nulear Applications, 0 Pages, 1993/00

None

JAEA Reports

High intensity proton accelerator program

Kaneko, Yoshihiko; Mizumoto, Motoharu; ; Nakahara, Yasuaki; Iwamoto, Akira; Funahashi, Satoru; ; Takeda, Tatsuoki; Hoshi, Michio; Shinohara, Nobuo; et al.

JAERI-M 91-095, 137 Pages, 1991/06

JAERI-M-91-095.pdf:4.2MB

no abstracts in English

Journal Articles

None

Okusa, Ryoichi; Saeki, Akira; Yoshikawa, Shinji;

9th Power Plant Dynamics, Control & Testing Symposium, , 

None

Journal Articles

None

Yoshikawa, Shinji; Saeki, Akira; Ugolini;

Genshiro No Kanshi To Shindan Ni Kansuru Dai-7-Kai Shimpojiumu (SMORN 7), , 

None

Journal Articles

None

Saeki, Akira;

PSAM-11, , 

None

Oral presentation

Extraction of technetium(VII) and rhenium(VII) by the new reagent, 2-(Imino)bis(N,N-dialkylacetamide) (IDAA)

Sasaki, Yuji; Sugo, Yumi; Saeki, Morihisa; Morita, Yasuji; Ohashi, Akira*

no journal, , 

The new diamide-type extractant, (Imino)bis(N,N-dialkylacetamide) (IDAA), was developed for Tc recovery. IDAA has a nitrogen donor atom introduced into the center of backbone and shows the tridentate feature by hybrid donor atoms of two carbonyl oxygen and a nitrogen. (Methylimino)bis(N,N-Dioctylacetamide) (MIDOA) and (Imino)bis(N,N-Dioctylacetamide) (IDOA), the IDAA derivatives, can be dissolved well in n-dodecane, and are readily used in the solvent extraction. In addition to Tc(VII) and Re(VII), Cr(VI), Mo(VI), W(VI), Pd(II) and Pu(IV) can be extracted from nitric acid to n-dodecane by MIDOA, therefore IDAA has high extractability with some oxonium anions. The extraction capacity for Re(VII) was measured and more than 37 mM Re(VII) can be extracted by 0.1M MIDOA.

Oral presentation

2-(Imino)bis(N,N-dialkylacetamide) (IDAA), a novel complexing agent for Palladiumu(II), technetium(VII) and rhenium(VII)

Sasaki, Yuji; Saeki, Morihisa; Sugo, Yumi; Morita, Yasuji; Ohashi, Akira*; Oriyama, Takeshi*; Ikeda, Yasuhisa*; Ali, M.*

no journal, , 

no abstracts in English

Oral presentation

Development of in-vessel inspection technology using remote imaging and spectroscopy, 2; Development of laser-induced breakdown spectroscopy technique for solid samples submerged in water

Toshimitsu, Masaaki; Saeki, Morihisa; Sugiyama, Akira; Oba, Hironori; Thornton, B.*; Sakka, Tetsuo*

no journal, , 

no abstracts in English

Oral presentation

Development of in-vessel inspection technology using remote imaging and spectroscopy, 3-2; Laser-induced breakdown spectroscopy technique for analyzing fuel debris submerged in water

Oba, Hironori; Saeki, Morihisa; Iwanade, Akio; Wakaida, Ikuo; Ito, Chikara; Sugiyama, Akira; Sakka, Tetsuo*; Thornton, B.*

no journal, , 

no abstracts in English

Oral presentation

Development of in-vessel inspection technology using remote analysis, 4-2; Laser-induced breakdown spectroscopy under $$^{60}$$Co $$gamma$$-ray irradiation

Oba, Hironori; Saeki, Morihisa; Wakaida, Ikuo; Ito, Chikara; Sugiyama, Akira

no journal, , 

no abstracts in English

18 (Records 1-18 displayed on this page)
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