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High-precision direct determination of the Sr-87/Sr-86 isotope ratio of bottled Sr-rich natural mineral drinking water using multiple collector inductively coupled plasma mass spectrometry 期刊论文  OAI收割
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY, 2011, 卷号: 66, 期号: 8, 页码: 656-660
作者:  
Yang, Yue-Heng;  Wu, Fu-Yuan;  Xie, Lie-Wen;  Yang, Jin-Hui;  Zhang, Yan-Bin
  |  收藏  |  浏览/下载:19/0  |  提交时间:2018/09/26
High-precision direct determination of the Sr-87/Sr-86 isotope ratio of bottled Sr-rich natural mineral drinking water using multiple collector inductively coupled plasma mass spectrometry 期刊论文  OAI收割
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY, 2011, 卷号: 66, 期号: 8, 页码: 656-660
作者:  
Yang, Yue-Heng;  Wu, Fu-Yuan;  Xie, Lie-Wen;  Yang, Jin-Hui;  Zhang, Yan-Bin
  |  收藏  |  浏览/下载:23/0  |  提交时间:2018/09/26
Direct methods beyond small-molecule crystallography 期刊论文  OAI收割
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, 2010, 卷号: 207, 期号: 12, 页码: 2621
Fan, HF
收藏  |  浏览/下载:26/0  |  提交时间:2013/09/17
CMOS APS imaging system application in star tracker (EI CONFERENCE) 会议论文  OAI收割
Advanced Materials and Devices for Sensing and Imaging II, November 8, 2004 - November 10, 2004, Beijing, China
作者:  
Li J.;  Liu Y.;  Liu Y.;  Liu Y.;  Liu J.
收藏  |  浏览/下载:58/0  |  提交时间:2013/03/25
Small satellites are capable of performing space explore missions that require accurate attitude determination and control. However  low weight  size  power and cost requirements limit the types of attitude sensor of small craft  such as CCD  are not practical for small satellites. CMOS APS is a good substitute for attitude sensors of small craft. Some of the technical advantages of CMOS APS are no blooming  single power  low power consumption  small size and little support circuitry  direct digital output  simple to system design  in particular  radiation-hard characteristic compare with CCD. This paper discusses the application probability of CMOS APS in star tracker for small satellites  further more  a prototype ground-based star camera based on STAR250 CMOS image sensor has been built. In order to extract stars positions coordinates  subpixel accuracy centroiding algorithm has been developed and tested on some ground-based images. Moreover  the camera system star sensitivity and noise model are analyzed  and the system accuracy is been evaluated. Experimental results indicate that a star camera based on CMOS APS is a viable practical attitude sensor appropriate for space small satellites.  
Low resolution structure of integral membrane protein light-harvesting complex LH2 from photosynthetic bacteria in the detergent solution by synchrotron small-angle X-ray scattering 期刊论文  OAI收割
HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION, 2003, 卷号: 27, 页码: 57
Hong, XG; Weng, YX; Li, M
收藏  |  浏览/下载:18/0  |  提交时间:2013/09/18
Implementation of cluster analysis for ab initio phasing using the molecular envelope from solution X-ray scattering 期刊论文  OAI收割
ACTA CRYSTALLOGRAPHICA SECTION D-BIOLOGICAL CRYSTALLOGRAPHY, 2000, 卷号: 56, 页码: 1002
Ockwell, DM; Hough, MA; Grossmann, JG; Hasnain, SS; Hao, Q
收藏  |  浏览/下载:23/0  |  提交时间:2013/09/17