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Sources and a proposal for comprehensive exploitation of lithium brine deposits in the Qaidam Basin on the northern Tibetan Plateau, China: Evidence from Li isotopes 期刊论文  OAI收割
ORE GEOLOGY REVIEWS, 2020, 卷号: 117, 页码: 7
作者:  
He, Mao-Yong;  Luo, Chong-Guang;  Yang, Hong-Jun;  Kong, Fan-Cui;  Li, Yu-Long
  |  收藏  |  浏览/下载:68/0  |  提交时间:2020/06/03
Timing analysis of Swift J1658.2-4242's outburst in 2018 with Insight-HXMT, NICER and AstroSat 期刊论文  OAI收割
Journal of High Energy Astrophysics, 2019, 卷号: 24, 页码: 30-40
作者:  
HXMT
  |  收藏  |  浏览/下载:57/0  |  提交时间:2022/02/08
Accretion  accretion disks  Black hole physics  X-rays: binaries:  Swift J1658.2-4242  Astrophysics - High Energy Astrophysical Phenomena  Abstract: We present the observational results from a detailed timing analysis of the black hole candidate Swift J1658.2-4242 during its 2018 outburst with the observations of Hard X-ray Modulation Telescope (Insight-HXMT), Neutron Star Interior Composition Explorer (NICER) and AstroSat in 0.1-250 keV. The evolution of intensity, hardness and integrated fractional root mean square (rms) observed by Insight-HXMT and NICER are presented in this paper. Type-C quasi-periodic oscillations (QPOs) observed by NICER (0.8-3.5 Hz) and Insight-HXMT (1-1.6 Hz) are also reported in this work. The features of the QPOs are analyzed with an energy range of 0.5-50 keV. The relations between QPO frequency and other characteristics such as intensity, hardness and QPO rms are carefully studied. The timing and spectral properties indicate that Swift J1658.2-4242 is a black hole binary system. Besides, the rms spectra of the source calculated from the simultaneous observation of Insight-HXMT, NICER and AstroSat support the Lense-Thirring origin of the QPOs. The relation between QPO phase lag and the centroid frequency of Swift J1658.2-4242 reveals a near zero constant when < 4Hz and a soft phase lag at 6.68 Hz. This independence follows the same trend as the high inclination galactic black hole binaries such as MAXI J1659-152.  
Chemical characteristics of haze particles in Xi'an during Chinese Spring Festival: Impact of fireworks burning 期刊论文  OAI收割
JOURNAL OF ENVIRONMENTAL SCIENCES, 2018, 卷号: 71, 页码: 179-187
作者:  
Xue, GY (Xue, Guoyan)[ 2 ];  Wang, XP (Wang, Xinpei)[ 2 ];  Xie, YN (Xie, Yuning)[ 2 ];  Ge, SS (Ge, Shuagshuang)[ 2 ];  Li, J (Li, Jin)[ 1,4 ]
  |  收藏  |  浏览/下载:73/0  |  提交时间:2018/11/21
Chemical characteristics of haze particles in Xi'an during Chinese Spring Festival: Impact of fireworks burning 期刊论文  OAI收割
JOURNAL OF ENVIRONMENTAL SCIENCES, 2018, 卷号: 71, 页码: 179-187
作者:  
Wu, C (Wu, Can)[ 1,4 ];  Wang, GH (Wang, Gehui)[ 1,2,3,4 ];  Wang, JY (Wang, Jiayuan)[ 1 ];  Li, JJ (Li, Jianjun)[ 1 ];  Ren, YQ (Ren, Yanqin)[ 1,5 ]
  |  收藏  |  浏览/下载:37/0  |  提交时间:2018/11/20
Composition and size distribution of airborne particulate PAHs and oxygenated PAHs in two Chinese megacities 期刊论文  OAI收割
ATMOSPHERIC RESEARCH, 2017, 卷号: 183, 期号: 2017-01-01, 页码: 322-330
作者:  
Ren, Yanqin;  Zhang, Lu;  Cao, Cong;  Tao, Jun;  Cao, Junji
  |  收藏  |  浏览/下载:36/0  |  提交时间:2018/10/22
Airborne particulate organic markers at the summit (2060 m,a.s.l.) of Mt. Hua in central China during winter: Implications for biofuel and coal combustion 期刊论文  OAI收割
Atmospheric Research, 2012, 卷号: 106, 页码: 108-119
作者:  
Li, JJ (Li, Jianjun)[1,2];  Cheng, CL (Cheng, Chunlei)[1];  Zhou, BH (Zhou, Bianhong)[4];  Wang, GH (Wang, Gehui)[1,3];  An, ZS (An, Zhisheng)[1]
  |  收藏  |  浏览/下载:17/0  |  提交时间:2018/12/13
The research on statistical properties of TDI-CCD imaging noise (EI CONFERENCE) 会议论文  OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Imaging Detectors and Applications, May 24, 2011 - May 26, 2011, Beijing, China
Gu Y.-Y.; Shen X.-H.; He G.-X.
收藏  |  浏览/下载:23/0  |  提交时间:2013/03/25
TDI-CCD can improve the sensitivity of space camera without any degradation of spatial resolution which is widely used in aerospace imaging devices. The article describes the basic working principle and application characteristics of TDI-CCD devices  analyses the composition of TDI-CCD imaging noise  and propose a new method to analyze TDI-CCD imaging noise with statistical probability distribution. In order to estimate the distribution of gray values affect by noise we introduced the concept of skewness and kurtosis. We design an experiment using constant illumination light source  take image with TDI-CCD working at different stage such as stage 16  stage 32  stage 48  stage 64 and stage 96  analyse the characteristics of image noise with the method we proposed  experimental results show that the gray values approximately meet normal distribution in large sample cases. 2011 SPIE.  
Pollen indication to source plants in the eastern desert of China SCI/SSCI论文  OAI收割
2005
Li Y. C.; Xu Q. H.; Zhao Y. K.; Yang X. L.; Xiao J. L.; Chen H.; Lu X. M.
收藏  |  浏览/下载:33/0  |  提交时间:2012/06/08