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Terminal settling velocity and physical properties of pollen grains in still air
http://hdl.handle.net/2237/25143
http://hdl.handle.net/2237/25143540d3bd4-19c2-48ca-be3b-f13e51065900
名前 / ファイル | ライセンス | アクション |
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2016-12-05 | |||||
タイトル | ||||||
タイトル | Terminal settling velocity and physical properties of pollen grains in still air | |||||
言語 | en | |||||
著者 |
Hirose, Yuuki
× Hirose, Yuuki× Osada, Kazuo |
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アクセス権 | ||||||
アクセス権 | open access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
権利 | ||||||
言語 | en | |||||
権利情報 | The final publication is available at Springer via http://doi.org/10.1007/s10453-015-9408-0 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Pollen grain | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Shape factors | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Settling velocity | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Aerodynamic diameter | |||||
抄録 | ||||||
内容記述 | Numerical simulation of wind pollination requires knowledge of pollen grain physical parameters such as size, shape factor, bulk density, and terminal settling velocity. The pollen grain parameters for Japanese cedar, Japanese cypress, short ragweed, Japanese black pine, and Japanese red pine were assessed for dry condition. Terminal settling velocities of dry pollen grains in still air were measured using image analysis of scattered light tracks in a dark settling tube. The measurement system was validated by comparing results to those obtained for standard microspheres of known size and density. Dry pollen grain shape factors indicate the resemblance of particles to spheres, except for pine pollen. Circularity factors of dry pine pollen grains were 0.90–0.86, suggesting more irregular shape than those of other pollen species. Aerodynamic diameters of dry pollen grains were calculated based on the terminal settling velocity. Aerodynamic diameters of Japanese cedar, Japanese cypress, and short ragweed closely resembled the projected area equivalent diameters, suggesting that aerodynamic behaviors of these pollen grains can be managed simply in numerical simulations. However, aerodynamic diameters of dry pine pollen grains were nearly 30 % smaller than projected area equivalent diameters. Sacci on dry pine pollen can reduce the terminal settling velocity through low density and shape effects attributed to their non-sphericity, engendering aerodynamic diameter smaller by more than 10 µm from area equivalent diameters. | |||||
言語 | en | |||||
内容記述タイプ | Abstract | |||||
出版者 | ||||||
言語 | en | |||||
出版者 | Springer | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプresource | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
出版タイプ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1007/s10453-015-9408-0 | |||||
ISSN | ||||||
収録物識別子タイプ | PISSN | |||||
収録物識別子 | 0393-5965 | |||||
書誌情報 |
en : Aerobiologia 巻 32, 号 3, p. 385-394, 発行日 2016-09 |
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著者版フラグ | ||||||
値 | author | |||||
URI | ||||||
識別子 | http://doi.org/10.1007/s10453-015-9408-0 | |||||
識別子タイプ | DOI | |||||
URI | ||||||
識別子 | http://hdl.handle.net/2237/25143 | |||||
識別子タイプ | HDL |