Zobrazeno 1 - 9 of 9 pro vyhledávání: '"Takeyoshi Asano"'
1
Factors, especially sunspot number, causing variations in surface air concentrations and depositions of7Be in Osaka, Japan
Autor: Akira Mizohata, Norio Ito, Takeyoshi Asano, Kazuko Megumi, Shunji Kiyoda, Tadao Matsunami
Publikováno v: Geophysical Research Letters. 27:361-364
We found that increasing sunspot number caused a significant negative effect on monthly and yearly average air concentration and yearly deposition of 7Be. For more than 15 years monthly average surface air concentration and monthly deposition of 7Be
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1043f6be2073388f7e259a51c63fca1a
https://doi.org/10.1029/1999gl010801
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3
Radioisotopic Impurity of 207Bi in BGO Scintillators
Autor: Kyue Fukuda, Takeyoshi Asano
Publikováno v: RADIOISOTOPES. 46:161-164
207Bi has been detected in a BGO scintillator by a Ge spectrometer. The concentration of 207Bi was found to be 3.1 mBq/Bi-g. Metallic samples of pure bismuth, produced recently and commercially available also contain 207Bi of 2 to 9 mBq/Big. A lead c
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::eebc46262549e4f2a2b03526482a1ba8
https://doi.org/10.3769/radioisotopes.46.161
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4
Synthesis of [2-14C,5-3H]cytosine and [2-14C,5-3H]uracil via bromination and catalytic bromine-tritium gas exchange
Autor: Takeyoshi Asano, Reiko Kiritani
Publikováno v: Journal of Labelled Compounds and Radiopharmaceuticals. 34:603-616
In micro-scale experiments, [2-14C,5-3H]cytosine and [2-14C,5-3H] uracil were synthesized via bromination and catalytic Br-3H exchange reaction with the use of [2-14C]-cytosine and-uracil and tritium gas. The double labelling percentages of these pro
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d31fe6b0d37756cbd337096fcf0654cf
https://doi.org/10.1002/jlcr.2580340704
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5
AC magnetic properties of electrical steel core under DC-biased magnetization
Autor: Shunji Yanase, Takeyoshi Asano, Yasuo Okazaki
Publikováno v: Journal of Magnetism and Magnetic Materials. :156-158
AC magnetic properties of electrical steel core under DC-biased magnetization have been measured and discussed. The biased magnetization Δ B depends not only on DC-biased field H DC but also on AC magnetization B m and the magnetic losses increase w
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d311e55b7c14e112e1af5c4b73656ccb
https://doi.org/10.1016/s0304-8853(00)00101-3
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6
Syntheses of [5-2H]-uracil, [5-2H]-cytosine, [6-2H]-uracil and [6-2H]-cytosine
Autor: Reiko Kiritani, Shin-ichi Fujita, Takeyoshi Asano, Takaaki Dohmaru, Tetsuro Kawanishi
Publikováno v: Journal of Labelled Compounds and Radiopharmaceuticals. 23:207-214
Facile syntheses of [5-2H]-, [6-2H]-uracil and [5-2H]-, [6-2H]-cytosine were investigated. The catalytic reaction of uracil or cytosine with 2H2 gas in alkaline media gave rise to [6-2H]-compounds almost exclusively. On the other hand,the reaction of
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8ff471ab1403e8d297422d482b686fc9
https://doi.org/10.1002/jlcr.2580230211
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