- 著者
- Jun Takada
- 出版者
- 日本環境変異原学会
- 雑誌
- Genes and Environment (ISSN:18807046)
- 巻号頁・発行日
- vol.35, no.3, pp.69-72, 2013 (Released:2013-09-03)
- 参考文献数
- 10
- 被引用文献数
- 1
Radiation hygiene survey has been conducted in the East Japan earthquake area, about Fukushima Dai-Ichi nuclear power station disaster caused by tsunami on March 11, 2011. Our surveys revealed that a public annual dose was 10 mSv following the disaster and health hazards should not be concluded by the methods of in situ dose evaluation. This study has been focused on internal dosimetries of iodine-131 in thyroid and of cesium-134, 137 in whole body. Further, we continuously have been studying radiation hygiene on cattle livestock in Namie town located within 20 km zone around the Fukushima Daiichi nuclear power station, and found no problem for the recovery.
- 著者
- JUN TAKADA MASAHARU HOSHI SHOZOH SAWADA MASANOBU SAKANOUE
- 出版者
- Journal of Radiation Research 編集委員会
- 雑誌
- Journal of Radiation Research (ISSN:04493060)
- 巻号頁・発行日
- vol.24, no.3, pp.229-236, 1983-09-15 (Released:2006-06-16)
- 参考文献数
- 14
- 被引用文献数
- 9 11 9
Uranium isotopes were studied to clarify the fallout from the Hiroshima atomic bomb. The 234U/238U activity ratios of uranium leached from the soil in the Hiroshima fallout area were significantly higher than those of other areas according to alpha ray spectrometry. The correlation of specific activity of the fission product 137Cs and the 234U/238U activity ratios was studied. Two different correlations were established inside and outside the fallout area. The results of this study suggest that manifestations of fallout from the Hiroshima atomic bomb are still detectable in the “black rain” area.
- 著者
- Shinsuke Kunitsugu Norihide Nishida Takao Tomiya Masahiro Nagae Makoto Nakanishi Tatsuo Fujii Jun Takada
- 出版者
- The Japan Institute of Metals and Materials
- 雑誌
- MATERIALS TRANSACTIONS (ISSN:13459678)
- 巻号頁・発行日
- vol.46, no.2, pp.215-218, 2005 (Released:2005-09-06)
- 参考文献数
- 12
- 被引用文献数
- 3 4
A homogeneous layer of molybdenum alumininosilicide Mo(Si,Al)2 with C(40) structure was made on the sample surface of molybdenum by dip-coating technique using Al-25 mass%Si liquid at 1123 K. Adherent Al-Si was removed by soaking the dipped samples in the NaOH saturated hydraulic solution. The Mo samples coated with the Mo(Si,Al)2 layer were found to have excellent oxidation resistance in air even at 1473 K due to formation of a dense alumina film on the sample surface during oxidation. The formation of Mo5(Si,Al)3 layer was also observed at the interface between the Mo substrate and the Mo(Si,Al)2 layer.