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Measurement of Iridium in the P/T Boundary Layers in Gifu by Neutron Activation Method
https://naragakuen.repo.nii.ac.jp/records/487
https://naragakuen.repo.nii.ac.jp/records/4878c81aca2-24bb-48f9-9a06-26b46c817c8c
名前 / ファイル | ライセンス | アクション |
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本文PDF (236.8 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2016-08-26 | |||||
タイトル | ||||||
タイトル | Measurement of Iridium in the P/T Boundary Layers in Gifu by Neutron Activation Method | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Measurement of Iridium in the P/T Boundary Layers in Gifu by Neutron Activation Method | |||||
言語 | ||||||
言語 | jpn | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
藪下, 信
× 藪下, 信× Yabushita, Shin× Wada, K.× Fujii, T.× Kawakami, S. |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Measurement has been made of Ir content in samples collected from P/T boundary layers in Gifu, Japan. The samples were collected from the site where fullerenes have been found. The samples were first crashed into powders and then activated in a nuclear reactor. The gamma ray measurement of the samples was made after cooling for two months. None of the samples analyzed yielded Ir content comparable with the well-known K/T boundary layer at several ppb's. In view of other experiments which yielded negative results, it is tentatively concluded that the P/T boundary does not provided a geological evidence of extra-terrestrial cause in the form of Iridium. |
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書誌情報 |
情報学フォーラム en : Information Science Forum 巻 2, p. 1-6, 発行日 2003 |
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出版者 | ||||||
出版者 | 奈良産業大学情報学部 |