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A Full-Spectrum ZnS Photocatalyst with Gradient Distribution of Atomic Copper Dopants and Concomitant Sulfur Vacancies for Highly Efficient Hydrogen Evolution 期刊论文  OAI收割
ACS NANO, 2024, 卷号: 18, 期号: 7, 页码: 5878-5889
作者:  Bao, Linping;  Ali, Sajjad;  Dai, Chunhui;  Zeng, Qing;  Zeng, Chao
  |  收藏  |  浏览/下载：1/0  |  提交时间：2025/04/27
A compact symmetric radio source born at one-tenth the current age of the Universe 期刊论文  OAI收割
Monthly Notices of the Royal Astronomical Society, 2022, 卷号: 511, 期号: 3, 页码: 4572-4581
作者:  An, Tao;  Wang, Ailing;  Zhang, Yingkang;  Aditya, J. N. H. S.;  Hong, Xiaoyu
  |  收藏  |  浏览/下载：70/0  |  提交时间：2023/06/19
Implications of a possible TeV break in the cosmic-ray electron and positron flux 期刊论文  OAI收割
PHYSICAL REVIEW D, 2021, 卷号: 103, 期号: 11, 页码: 115010
作者:  Ding, Yu-Chen;  Li, Nan;  Wei, Chun-Cheng;  Wu, Yue-Liang;  Zhou, Yu-Feng
  |  收藏  |  浏览/下载：135/0  |  提交时间：2021/09/27
Allometry Between Vegetative and Reproductive Traits in Orchids 期刊论文  OAI收割
FRONTIERS IN PLANT SCIENCE, 2021, 卷号: 12, 页码: 728843
作者:  Feng,Jing-Qiu;  Zhang,Feng-Ping;  Huang,Jia-Lin;  Hu,Hong;  Zhang,Shi-Bao
  |  收藏  |  浏览/下载：54/0  |  提交时间：2022/04/02
Synthesis and comparative evaluation of optical and electrochemical properties of efficacious heterostructured-nanocatalysts of ZnSe with commercial and reduced titania 期刊论文  OAI收割
JOURNAL OF ALLOYS AND COMPOUNDS, 2021, 卷号: 879
作者:  Jamil, Sadaf;  Jabeen, Naila;  Khan, Latif U.;  Bashir, Amna;  Janjua, Naveed
  |  收藏  |  浏览/下载：51/0  |  提交时间：2021/12/01
An underlying clock in the extreme flip-flop state transitions of the black hole transient Swift J1658.2-4242 期刊论文  OAI收割
Astronomy and Astrophysics, 2020, 卷号: 641, 页码: A101
作者:  HXMT
  |  收藏  |  浏览/下载：87/0  |  提交时间：2022/02/08
accretion  accretion disks  black hole physics  X-rays: binaries  time  Astrophysics - High Energy Astrophysical Phenomena  Abstract:
Aims: Flip-flops are top-hat-like X-ray flux variations, which have been observed in some transient accreting black hole binary systems, and feature simultaneous changes in the spectral hardness and the power density spectrum (PDS). They occur at a crucial time in the evolution of these systems, when the accretion disc emission starts to dominate over coronal emission. Flip-flops remain a poorly understood phenomenon, so we aim to thoroughly investigate them in a system featuring several such transitions.
Methods: Within the multitude of observations of Swift J1658.2-4242 during its outburst in early 2018, we detected 15 flip-flops, enabling a detailed analysis of their individual properties and the differences between them. We present observations by XMM-Newton, NuSTAR, Astrosat, Swift, Insight-HXMT, INTEGRAL, and ATCA. We analysed their light curves, searched for periodicities, computed their PDSs, and fitted their X-ray spectra, to investigate the source behaviour during flip-flop transitions and how the interval featuring flip-flops differs from the rest of the outburst.
Results: The flip-flops of Swift J1658.2-4242 are of an extreme variety, exhibiting flux differences of up to 77% within 100 s, which is much larger than what has been seen previously. We observed radical changes in the PDS simultaneous with the sharp flux variations, featuring transitions between the quasi-periodic oscillation types C and A, which have never been observed before. Changes in the PDS are delayed, but more rapid than changes in the light curve. Flip-flops occur in two intervals within the outburst, separated by about two weeks in which these phenomena were not seen. Transitions between the two flip-flop states occurred at random integer multiples of a fundamental period of 2.761 ks in the first interval and 2.61 ks in the second. Spectral analysis reveals the high and low flux flip-flop states to be very similar, but distinct from intervals lacking flip-flops. A change of the inner temperature of the accretion disc is responsible for most of the flux difference in the flip-flops. We also highlight the importance of correcting for the influence of the dust scattering halo on the X-ray spectra.  
Constraining the reionization history with CMB and spectroscopic observations 期刊论文  OAI收割
PHYSICAL REVIEW D, 2019, 卷号: 99, 期号: 4, 页码: 43524
作者:  Dai, WM;  Ma, YZ;  Guo, ZK;  Cai, RG
  |  收藏  |  浏览/下载：121/0  |  提交时间：2019/07/19
Experimental and field investigations on seismic response of joints and beddings in rocks 期刊论文  OAI收割
ULTRASONICS, 2019, 卷号: 97, 期号: -, 页码: 46-56
作者:  Liu, Yang;  Lu, Cai-Ping;  Liu, Bin;  Zhang, Heng;  Wang, Hong-Yu
  |  收藏  |  浏览/下载：54/0  |  提交时间：2020/04/08
犬类传染性生殖器肿瘤突变频谱与选择压力研究 学位论文  OAI收割
北京: 中国科学院大学, 2019
作者:  尹婷婷
  |  收藏  |  浏览/下载：57/0  |  提交时间：2020/12/17
Optical spectrum evolution induced by altering input light wavelength spacing 期刊论文  OAI收割
modern physics letters b, 2016, 卷号: 30, 期号: 1, 页码: 1550259
作者:  Wang, Minjie;  Ma, Caiwen
收藏  |  浏览/下载：42/0  |  提交时间：2016/02/19