Development of two-dimensional inverse Laplace transform NMR and application
| Project/Area Number |
24750008
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Physical chemistry
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| Research Institution | Chiba University |
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Principal Investigator |
TAKAHIRO Ohkubo 千葉大学, 工学(系)研究科(研究院), 助教 (50534541)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | 二次元逆ラプラス変換 / 核磁気共鳴 / 緩和時間 / 拡散係数 / 水和反応 / 空隙構造 / 高分子膜 / 多孔質材料 / 2次元ラプラス逆変換 / 自己拡散係数 / 非破壊検査 / 2次元逆ラプラス変換 / セメントペースト / 二次元核磁気共鳴法 / 特異値分解 |
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| Outline of Final Research Achievements |
The basic principles and experimental techniques of two-dimensional analysis by NMR relaxation and diffusion are develped. A compulational program for Laplace-Laplace inversion using singular value decomposition was newly released, and verified stability on various NMR experimental parameters such as signal-to-noise ratio and sampling points. We applied relaxation-diffusion methodology to charcterize water in polymer exchange membranes with different relative humidity. At 30% RH, the diffusion coefficient of water in small-sized channels is greater than that in large-sized channels. On the other hand, the diffusion coefficients of protons with smaller and larger water channels are almost the same at 50, 70, and 90% RH.
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Report
(4 results)
Research Products
(19 results)
