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アコヤガイ介殼構造の電子顕微鏡的観察 2. 真珠層表面の Aragonite Crystals の観察
https://fra.repo.nii.ac.jp/records/2008919
https://fra.repo.nii.ac.jp/records/2008919f443728a-0262-4b4e-834e-5a50b820d412
| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2024-06-27 | |||||
| タイトル | ||||||
| タイトル | アコヤガイ介殼構造の電子顕微鏡的観察 2. 真珠層表面の Aragonite Crystals の観察 | |||||
| 言語 | ja | |||||
| タイトル | ||||||
| タイトル | Electron-microscopic observations on the shell structures of pearl oyster (Pinctada martensit), II. Observations of the aragonite crystals on the surface of nacreous layers | |||||
| 言語 | en | |||||
| 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 | departmental bulletin paper | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
和田, 浩爾
× 和田, 浩爾 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Nacreous layers of pearl oyster shells (Pinctada martensii) were observed with optical and electron microscopes, and the results were as follow : 1) Aggregates of aragonite crystals on the surface of the nacre exhbit parallel, spiral, concentric or irregular pattern. These patterns vary with physiological conditions of the pearl oysters, age of the animal, different regions of the nacre, and seasonal changes of the enviroments, probably because of the difference of mode and velocity of crystal growth. 2) Volute and spiral patterns are circular or deformed forms, which may be due to the conformity and not-conformity of growth velocity and directions. 3) In the process of crystal deposition, newly formed crystals deposit at the edges or on the surface of underlying crystals and develope independently with them. Near the edges of developing steps, small crystals are scattered within a certain limited distance from the edges of steps. 4) Size of crystals in the marginal and center of the nacre is 1~3/μ, and 3~9 μ, respectively. The former are rounded forms and the latter are hexagonal. These difference of size and forms seem to be due to the difference of growth velocity in different degree of supersaturation of CaCO3. The velocity seems to be greater in younger shells, and the marginal part of the shell than older ones, and central part. It seems to be also greater in summer than in winter. 5) The screw dislocation is observed in the process of crystal growth. 6) Aragonite crystals on the surface of weak pearl oysters are found to be in the process of dissolving with definite etching orientations on 001 planes. |
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| 言語 | en | |||||
| 書誌情報 |
ja : 国立真珠研究所報告 en : Bulletin of the National Pearl Research Laboratory 巻 2, p. 74-85, ページ数 12, 発行日 1957-03-05 |
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| 出版者 | ||||||
| 出版者 | 国立真珠研究所 | |||||
| 言語 | ja | |||||
| 出版者 | ||||||
| 出版者 | National Pearl Research Laboratory | |||||
| 言語 | en | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AN00091717 | |||||
| 情報源 | ||||||
| 識別子タイプ | Local | |||||
| 関連識別子 | pearl_k_74 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://jp-pearl.com/wp-content/uploads/2018/04/houkoku002.pdf#004 | |||||
| 言語 | ja | |||||
| 関連名称 | 日本真珠振興会Archive | |||||
