中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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浏览/检索结果: 共6条,第1-6条 帮助

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Plastic behavior of the foam-filled sandwich beam with circular tube core under transverse loading 期刊论文  OAI收割
ENGINEERING STRUCTURES, 2022, 卷号: 268
作者:  
Zhao, Modi;  Wu, Xiwei;  Du, Jinlong;  Yuan, Hui;  Wang, Xingfu
  |  收藏  |  浏览/下载:38/0  |  提交时间:2022/12/23
Mobilized Mohr-Coulomb and Hoek-Brown Strength Parameters during Failure of Granite in Alxa Area in China for High-Level Radioactive Waste Disposal 期刊论文  OAI收割
ENERGIES, 2019, 卷号: 12, 期号: 22, 页码: 16
作者:  
Cheng, Cheng;  Xu, Nengxiong;  Zheng, Bo
  |  收藏  |  浏览/下载:37/0  |  提交时间:2020/05/19
Operating conditions-induced changes in product yield andcharacteristics during thermal-conversion of peanut shell to biochar inrelation to economic analysis 期刊论文  OAI收割
Journal of Cleaner Production, 2018, 卷号: 193, 期号: 2018, 页码: 479-490
作者:  
Liu,RJ(Liu,Ruijia);  Liu,GJ(Liu,Guijian);  Yousaf Balal;  Abbas Qumber;  Liu,Guijian
  |  收藏  |  浏览/下载:43/0  |  提交时间:2018/10/09
Study on the shear structural yield of soft soil affected by drainage condition 会议论文  OAI收割
Guilin, PEOPLES R CHINA, OCT 27-28, 2012
作者:  
Yang Ai-Wu;  Kong Ling-Wei;  Lu Li-Qiang
  |  收藏  |  浏览/下载:31/0  |  提交时间:2018/06/05
Modulation transfer function measurement of sampled imaging systems in field test (EI CONFERENCE) 会议论文  OAI收割
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, April 26, 2010 - April 29, 2010, Dalian, China
作者:  
Yang L.;  Zhang J.;  Zhang J.;  Zhang J.;  Wang J.
收藏  |  浏览/下载:27/0  |  提交时间:2013/03/25
A digital mirror device (DMD) based light projector was developed as the target generator in modulation transfer function (MTF) measurement. In order to overcome the sampling-scene phase effect in MTF measurement of sampled imaging systems  a method using random targets is introduced to yield a phase-averaged MTF. The main potential problem of implementing this method is the fact that the stationary assumption of the random targets may be vitiated in practical measurement  especially in field test due to the ill condition. We provide an efficient model-independent way of analyzing and isolating the spectral contents arising from these additional contributions to MTF measurement. Algorithms with adaptive parameter selection were also developed for spectral estimation of the test image in order to overcome the challenge brought by the size limit of the test matrices for one certain field of view derived from the isoplantic region. The MTF measurement of a CCD video imager is used to demonstrate the measurement technique and illustrate the benefits over other methods. In order to validate the results  comparisons have been made between MTF measurements of imager implemented using this method and bar target direct measurements. 2010 Copyright SPIE - The International Society for Optical Engineering.  
Optical characterization of bare CdSe and CdSe/CdS core/shell nanocrystals (EI CONFERENCE) 会议论文  OAI收割
ICO20: Biomedical Optics, August 21, 2005 - August 26, 2005, Changchun, China
作者:  
Liu L.;  Yu B.;  Liu L.
收藏  |  浏览/下载:16/0  |  提交时间:2013/03/25
Thiol-capped CdSe/CdS core/shell nanocrystals (NCs) which show high luminescence quantum yield are synthesized in an aqueous solution. UV-Vis absorption spectroscopy and photoluminescence (PL) spectroscopy are employed to analyze optical characters and stabilities of NCs. Furthermore  PL properties are studied in a temperature range between 77K and 300K. The PL peak position of bare CdSe NCs shifts toward shorter wavelengths and the band becomes sharper with decreasing temperature. On the same condition  the PL peak position of CdSe/CdS core/shell NCs keeps unconverted nearly with the variation of temperature. Photostability of bare CdSe NCs and CdSe/CdS core/shell NCs are compared under the 325nm laser irradiation. It takes 78 seconds that the PL intensity declines to the half for CdSe NCs  but 442 seconds for CdSe/CdS core/shell NCs. The fluorescence decay lifetime increases about six times after overcoating. The results indicate that the CdS shell can improve the low temperature PL stability and photostability of CdSe NCs effectively.