中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
机构
采集方式
内容类型
发表日期
学科主题
筛选

浏览/检索结果: 共11条，第1-10条 帮助

条数/页： 排序方式：
Simultaneous Quantitative Analysis of Soil Heavy Metals As and Pb Based on Energy Dispersive XRF Spectroscopy 期刊论文  OAI收割
SPECTROSCOPY AND SPECTRAL ANALYSIS, 2024, 卷号: 44
作者:  Ye, Zi-qi;  Gan, Ting-ting;  Wu, Wen-tao;  Zhao, Nan-jing;  Yin, Gao-fang
  |  收藏  |  浏览/下载：9/0  |  提交时间：2024/11/20
Identification of Metal Components Characteristic Peak Position of Energy Dispersive X-Ray Fluorescence Spectra Based on the Wavelet Transformation 期刊论文  OAI收割
SPECTROSCOPY AND SPECTRAL ANALYSIS, 2018, 卷号: 38, 期号: 6, 页码: 1904-1909
作者:  Zhang Wei;  Xu Hua;  Duan Lian-fei;  Ma Ming-jun;  Gan Ting-ting
  |  收藏  |  浏览/下载：22/0  |  提交时间：2019/11/12
Quantitative Analysis of Chlorophyll-a Reflectance Spectrum in Red Spectral Region of Water 期刊论文  OAI收割
SPECTROSCOPY AND SPECTRAL ANALYSIS, 2010, 卷号: 30, 期号: 2, 页码: 313-317
作者:  Ma Wan-dong;  Xing Qian-guo;  Zhang Yuan-zhi;  Shi Ping;  Liu Ya-long
收藏  |  浏览/下载：28/0  |  提交时间：2015/07/20
Quantitative Analysis of Chlorophyll-a Reflectance Spectrum in Red Spectral Region of Water 期刊论文  OAI收割
SPECTROSCOPY AND SPECTRAL ANALYSIS, 2010, 卷号: 30, 期号: 2, 页码: 313-317
作者:  Ma Wan-dong;  Xing Qian-guo;  Zhang Yuan-zhi;  Shi Ping;  Liu Ya-long
  |  收藏  |  浏览/下载：160/0  |  提交时间：2011/07/14
Fabrication and photoluminescence of ZnS: Mn2+ nanowires/ZnO quantum dots/SiO2 heterostructure (EI CONFERENCE) 会议论文  OAI收割
作者:  Yang L.;  Wang D.;  Wang Y.;  Wang Y.;  Wang Y.
收藏  |  浏览/下载：24/0  |  提交时间：2013/03/25
In this paper  we demonstrated the encapsulation of ZnS: Mn2+ nanowires (NWs) and ZnO quantum dots (QDs) with a layer of mesoporous SiO 2 shell for the purpose of integrating dual emission property into one common nanostructure. The average diameter of ZnS: Mn2+ NWs  ZnO QDs  and ZnS: Mn2+ / ZnO@SiO2 heterostructure was about 10 nm  6 nm  and 22 nm  respectively. Within ZnS: Mn2+ / ZnO@SiO 2 nanocomposites  the intensity of the yellow-orange emission contributed by ZnS: Mn2+ NWs and the UV emission contributed by ZnO QDs was three and ten times higher than their individual components  respectively. The fluorescence intensity ratio of the dual emission can be tuned by adjusting the hydrolysis time of tetraethyl orthosilicate. The peak energy of the yellow-orange and UV emission showed blueshift and redshift as increasing the temperature  respectively. The anomalous enhancement of the integrated intensity for the UV emission with the temperature indicated that the high surface state density existing in ZnO QDs can overrun the influence of temperature quenching and even alter the photoluminescent properties. 2010 American Institute of Physics.  
Dynamics and characteristics of fluorescent dissolved organic matter in the groundwater, river and lake water 期刊论文  iSwitch采集
Water air and soil pollution, 2007, 卷号: 184, 期号: 1-4, 页码: 157-176
作者:  Mostofa, Khan M. G.;  Yoshioka, Takahito;  Konohira, Eiichi;  Tanoue, Eiichiro
收藏  |  浏览/下载：40/0  |  提交时间：2019/05/10
Relationship between fluorescence peak spectral features and chlorophyll-alpha in lake chagan 期刊论文  iSwitch采集
Journal of infrared and millimeter waves, 2006, 卷号: 25, 期号: 5, 页码: 355-359
作者:  Duan Hong-Tao;  Zhang Bai;  Liu Dian-Wei;  Zhang Yuan-Zhi;  Song Kai-Shan
收藏  |  浏览/下载：42/0  |  提交时间：2019/05/10
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：17/0  |  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.  
A study of interaction between FITC- labeled antibody and optical fiber surface (EI CONFERENCE) 会议论文  OAI收割
ICO20: Materials and Nanostructures, August 21, 2005 - August 26, 2005, Changchun, China
作者:  Wang X.;  Wang X.;  Wang X.
收藏  |  浏览/下载：40/0  |  提交时间：2013/03/25
The immobilization of antibodies on solid surface has been widely studied in elucidating immunoassay and in developing immunosensor. In this paper  FITC-labeled goat anti-human IgG were covalently immobilized on 3-aminopropyltriethoxysilane (APTES) and glutaraldehyde (Glu) to modify the distal end of a fiber-optic probe. The higher density and stability of FITC-labeled goat anti-human IgG could be obtained on the fiber surface modified with APTES-Glu than that on the non-modified fiber surface by evanescent excited fluorescence spectroscopy. Furthermore  red shift of the FITC fluorescence dye emission peak was observed on different fiber surface  exhibiting different interaction between FITC- labeled antibody and surface. Finally  under these conditions antigen-antibody reaction was investigated as an immunosensor. Detection limit of the evanescent wave optic-fiber biosensor is 10ng/ml.  
Measurement and calculation of escape peak intensities in synchrotron radiation X-ray fluorescence analysis 期刊论文  OAI收割
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2002, 卷号: 192, 期号: 4, 页码: 365-369
作者:  Kang, SX;  Sun, X;  Ju X(巨新);  Huang YY(黄宇营);  Xian DC(冼鼎昌)
收藏  |  浏览/下载：9/0  |  提交时间：2016/06/27