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浏览/检索结果: 共12条，第1-10条 帮助

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Spatiotemporal evolution and influencing factors of provincial tourism ecological security in China 期刊论文  OAI收割
ECOLOGICAL INDICATORS, 2023, 卷号: 148, 页码: 110114
作者:  Zheng, Xin;  Yang, Zhaoping;  Zhang, Xiaoyao;  Wang, Tian;  Chen, Xiaodong
  |  收藏  |  浏览/下载：19/0  |  提交时间：2023/05/06
Does the Belt and Road Initiative Promote Value Chain Connection Between China and the Silk Road Countries? 期刊论文  OAI收割
CHINESE GEOGRAPHICAL SCIENCE, 2021, 页码: 17
作者:  Zheng Zhi;  Liu Weidong;  Song Zhouying
  |  收藏  |  浏览/下载：113/0  |  提交时间：2021/11/05
Does the Belt and Road Initiative Promote Value Chain Connection Between China and the Silk Road Countries? 期刊论文  OAI收割
CHINESE GEOGRAPHICAL SCIENCE, 2021, 页码: 17
作者:  Zheng Zhi;  Liu Weidong;  Song Zhouying
  |  收藏  |  浏览/下载：13/0  |  提交时间：2021/11/05
Synchronous X-ray/Optical QPOs from the Black Hole LMXB MAXI J1820+070 期刊论文  OAI收割
Monthly Notices of the Royal Astronomical Society, 2021
作者:  HXMT
  |  收藏  |  浏览/下载：52/0  |  提交时间：2022/02/08
black hole physics  Low Mass X-ray Binaries  accretion  accretion  discs  stars: individual (MAXI J1820+070)  Astrophysics - High Energy  Astrophysical Phenomena  Abstract: We present high-speed optical photometry from SAAO and SALT on the black hole LMXB MAXI J1820+070 (ASSASN-18ey), some of it simultaneous with NICER, Swift and Insight-HXMT X-ray coverage. We detect optical Quasi-Periodic Oscillations (QPOs) that move to higher frequencies as the outburst progresses, tracking both the frequency and evolution of similar X-ray QPOs previously reported. Correlated X-ray/optical data reveal a complex pattern of lags, including an anti-correlation and a sub-second lag that evolve over the first few weeks of outburst. They also show correlated components separated by a lag equal to the QPO period roughly centered on zero lag, implying that the inter-band variability is strongly and consistently affected by these QPOs at a constant phase lag of roughly ±Ю The synchronisation of X-ray and optical QPOs indicates that they must be produced in regions physically very close to each other  we thus propose that they can be explained by a precessing jet model, based on analogies with V404 Cyg and MAXI J1348-630.  
The Spatial Evolution of Geoeconomic Pattern among China and Neighboring Countries since the Reform and Opening-Up 期刊论文  OAI收割
SUSTAINABILITY, 2019, 卷号: 11, 期号: 7, 页码: 17
作者:  Liang, Yi;  Chen, Mingxing;  Lu, Dadao;  Ding, Zijin;  Zheng, Zhi
  |  收藏  |  浏览/下载：33/0  |  提交时间：2019/09/24
The Spatial Evolution of Geoeconomic Pattern among China and Neighboring Countries since the Reform and Opening-Up 期刊论文  OAI收割
SUSTAINABILITY, 2019, 卷号: 11, 期号: 7, 页码: 17
作者:  Liang, Yi;  Chen, Mingxing;  Lu, Dadao;  Ding, Zijin;  Zheng, Zhi
  |  收藏  |  浏览/下载：27/0  |  提交时间：2019/09/24
The Spatial Evolution of Geoeconomic Pattern among China and Neighboring Countries since the Reform and Opening-Up 期刊论文  OAI收割
SUSTAINABILITY, 2019, 卷号: 11, 期号: 7, 页码: 17
作者:  Liang, Yi;  Chen, Mingxing;  Lu, Dadao;  Ding, Zijin
  |  收藏  |  浏览/下载：18/0  |  提交时间：2019/09/24
Typical embankment settlement/heave patterns of the Qinghai-Tibet highway in permafrost regions: Formation and evolution 期刊论文  iSwitch采集
ENGINEERING GEOLOGY, 2016, 卷号: 214, 页码: 147-156
作者:  Yu, Fan;  Qi, Jilin;  Lai, Yuanming;  Sivasithamparam, Nallathamby;  Yao, Xiaoliang
收藏  |  浏览/下载：71/0  |  提交时间：2019/10/09
Granite landform characteristics, distribution and evolution patterns in Huangshan Mt. 期刊论文  OAI收割
CHINESE SCIENCE BULLETIN, 2009, 卷号: 54, 期号: 23, 页码: 4487-4499
作者:  Cui ZhiJiu;  Chen Yixin;  Yang XiaoYan
  |  收藏  |  浏览/下载：24/0  |  提交时间：2019/09/26
Granite landform characteristics, distribution and evolution patterns in Huangshan Mt. 期刊论文  OAI收割
CHINESE SCIENCE BULLETIN, 2009, 卷号: 54, 期号: 23, 页码: 4487-4499
作者:  Cui ZhiJiu;  Chen Yixin;  Yang XiaoYan
  |  收藏  |  浏览/下载：16/0  |  提交时间：2019/09/26