Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Naohito Uetake"'
Autor:
Fumito Nakamura, Naohito Uetake, Hiroo Yoshikawa, Makoto Nagase, Kazumi Anazawa, Kazushige Ishida, Motohiro Aizawa
Publikováno v:
Journal of Nuclear Science and Technology. 39:941-949
In the development of a new chemical decontamination method which provides a high decontamination effect, less corrosion of base metal, and less radioactive waste generation, we developed a decomposition method for oxalic acid coexisting with hydrazi
Autor:
Kazushige Ishida, Kazumi Anazawa, Naohito Uetake, Kiyoharu Furukawa, Fumito Nakamura, Tadashi Tamagawa, Hiroo Yoshikawa, Makoto Nagase
Publikováno v:
Journal of Nuclear Science and Technology. 38:1090-1096
A new low corrosive decontamination method was developed which uses both oxalic acid and hydrazine as the reducing agent and potassium permanganate as the oxidizing agent. Less corrosion of structural materials during the decontamination is realized
Autor:
Shunsuke Uchida, Masahiko Tachibana, Masato Nakamura, Naohito Uetake, Yoichi Wada, Kazuhiko Akamine
Publikováno v:
Journal of Nuclear Science and Technology. 38:621-632
Alkaline water chemistry (AWC) has been studied as a new water chemistry control to mitigate intergranular stress corrosion cracking (IGSCC) of sensitized type 304 stainless steel (SUS304). The AWC was found to be capable of reducing crack growth rat
Autor:
Shunsuke Uchida, Atsushi Watanabe, Naohito Uetake, Kenkichi Ishigure, Masahiko Tachibana, Yoichi Wada
Publikováno v:
Journal of Nuclear Science and Technology. 37:901-912
The stress corrosion cracking (SCC) of structural materials used in boiling water reactors has been studied at relatively low hydrogen peroxide (H 2 O 2 ) concentrations, around 10ppb, which was assumed to be representative of the corrosion environme
Publikováno v:
Journal of Nuclear Science and Technology. 34:948-959
Publikováno v:
Journal of Nuclear Science and Technology. 32:898-904
Copper ion deposition behavior on Zircaloy cladding surfaces under simulated BWR conditions was investigated. The results indicated that Cu ion deposition rate on the fuel surface increased and deposited particle size decreased as pH increased. Oxida
Publikováno v:
Journal of Nuclear Science and Technology. 29:1194-1200
Autor:
Tatsuyuki Kanamori, Kenji Tsujikawa, Susumu Watanabe, Kenji Kuwayama, Naohito Uetake, Hiroyuki Inoue, Hiroaki Hashimoto, Noriyuki Tachi, Hajime Miyaguchi, Yuko T. Iwata
Publikováno v:
Journal of mass spectrometry : JMS. 44(9)
A novel approach to the analysis of ecstasy tablets by direct mass spectrometry coupled with thermal desorption (TD) and counter-flow introduction atmospheric pressure chemical ionization (CFI-APCI) is described. Analytes were thermally desorbed with
Publikováno v:
Review of Scientific Instruments. 62:1942-1946
The flux and velocity of Cu and Ti vaporized by an electron beam were measured by a microbalance. A small disk was hung horizontally above the crucible and its weight change was measured by the microbalance. The flux was determined from the weight ch
Autor:
Naohito Uetake
Publikováno v:
Canadian Journal of Chemistry. 69:322-326
Chemical shift changes of 31P NMR were investigated for dibutyl phosphate (DBP) in several polar solvents and compared with tributyl phosphate (TBP). The chemical shift differences between DBP and TBP in the same solvents were found to reflect only t