| Project/Area Number |
14340165
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Petrology/Mineralogy/Science of ore deposit
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| Research Institution | Kagoshima University |
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Principal Investigator |
KAWANO Motoharu Kagoshima University, Faculty of Agriculture, Associate professor, 農学部, 助教授 (80224814)
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| Co-Investigator(Kenkyū-buntansha) |
内木場 哲也 鹿児島大学, 総合研究博物館, 助教授 (20203531)
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| Project Period (FY) |
2002 – 2004
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| Project Status |
Completed (Fiscal Year 2004)
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| Budget Amount *help |
¥15,000,000 (Direct Cost: ¥15,000,000)
Fiscal Year 2004: ¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 2003: ¥1,600,000 (Direct Cost: ¥1,600,000)
Fiscal Year 2002: ¥11,900,000 (Direct Cost: ¥11,900,000)
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| Keywords | Earth surface / Bacteria / Dissolution / Ligand / Protein / Polysaccharide / Reactvie site / 鉱物 / 微生物 / スメクタイト / カオリナイト / 溶解速度 / 飽和 / 有機酸 / 有機分子 / 吸着 / 錯体 / 表面電荷 / イオン吸着 / アモルファスシリカ |
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| Research Abstract |
Dissolution experiments of various silicate minerals such as smectite, kaolinite, and amorphous silica in the systems containing bacteria were performed to confirm the effects of dissolution rates of the minerals. The apparent effects of bacteria on the dissolution rates were evaluated by using cell numbers, and the inherent effects were estimated by reactive site numbers of organic molecules interacted with the mineral surfaces. Generally, bacterial dissolution of silicate minerals proceed mainly by ligand promoted processes released from the bacterial cells. Therefore, the inherent effects of bacteria on the mineral dissolution can be evaluated by reactive site numbers of the ligands. In this study, thus, dissolution rates of minerals in organic systems containing albumin or xanthan were evaluated by their reactive site numbers as a parameter of the rates.
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