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浏览/检索结果: 共96条，第1-10条 帮助

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Study on its application and unstable risk subarea estimation method of mountainous traffic engineering's spoil ground 期刊论文  OAI收割
FRONTIERS IN EARTH SCIENCE, 2025, 卷号: 12, 页码: 9
作者:  Zhang, Jihong;  Dong, Zhongji;  Yin, Xiaotao;  Yang, Min
  |  收藏  |  浏览/下载：2/0  |  提交时间：2025/06/27
Development of linear-element boundary element method for inverse solution from induced far-field displacements to reservoir loading source 期刊论文  OAI收割
EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING, 2023
作者:  Zhao, Yu;  Li, Hong;  Liang, Zhengzhao;  Zhou, Hui;  Gong, Bin
  |  收藏  |  浏览/下载：24/0  |  提交时间：2023/08/02
Changes in the Dog's and Cat's Behaviors, as Reported by the Owners, before and during the Lockdown in China 期刊论文  OAI收割
ANIMALS, 2022, 卷号: 12, 期号: 19, 页码: 28
作者:  Platto, Sara;  Serres, Agathe;  Normando, Simona;  Wang, Yanqing;  Turner, Dennis C.
  |  收藏  |  浏览/下载：14/0  |  提交时间：2022/11/17
Numerical simulation method for the process of rockburst 期刊论文  OAI收割
ENGINEERING GEOLOGY, 2022, 卷号: 306, 期号: -, 页码: -
作者:  Yang, Fanjie;  Hui, Zhou;  Xiao, Haibin;  Azhar, Muhammad Usman;  Yong, Zhu
  |  收藏  |  浏览/下载：13/0  |  提交时间：2023/08/02
Coronary Blindness: Desensitization after excessive exposure to coronavirus-related information 期刊论文  OAI收割
HEALTH POLICY AND TECHNOLOGY, 2022, 卷号: 11, 期号: 3, 页码: 2
作者:  Uludag, Kadir M. S.
  |  收藏  |  浏览/下载：31/0  |  提交时间：2022/11/08
Experimental study of the mechanical behavior of calcareous sand under repeated loading-unloading 期刊论文  OAI收割
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT, 2021, 页码: 17
作者:  Wang, Xing;  Cui, Jie;  Zhu, Chang-Qi;  Wu, Yang;  Wang, Xin-Zhi
  |  收藏  |  浏览/下载：35/0  |  提交时间：2021/05/25
Detection of Flare Multiperiodic Pulsations in Mid-ultraviolet Balmer Continuum, Lyl Hard X-Ray, and Radio Emissions Simultaneously 期刊论文  OAI收割
The Astrophysical Journal, 2021, 卷号: 921, 页码: 179
作者:  HXMT
  |  收藏  |  浏览/下载：32/0  |  提交时间：2022/02/08
Solar flares  Solar oscillations  Solar ultraviolet emission  Solar  x-ray emission  Solar radio emission  1496  1515  1533  1536  1522  Astrophysics - Solar and Stellar Astrophysics  Abstract: Quasi-periodic pulsations (QPPs), which usually appear as temporal pulsations of the total flux, are frequently detected in the light curves of solar/stellar flares. In this study, we present the investigation of nonstationary QPPs with multiple periods during the impulsive phase of a powerful flare on 2017 September 6, which were simultaneously measured by the Hard X-ray Modulation Telescope (Insight-HXMT), as well as the ground-based BLENSW. The multiple periods, detected by applying a wavelet transform and Lomb-Scargle periodogram to the detrended light curves, are found to be ~20-55 s in the Ly`and mid-ultraviolet Balmer continuum emissions during the flare impulsive phase. Similar QPPs with multiple periods are also found in the hard X-ray emission and low-frequency radio emission. Our observations suggest that the flare QPPs could be related to nonthermal electrons accelerated by the repeated energy release process, i.e., triggering of repetitive magnetic reconnection, while the multiple periods might be modulated by the sausage oscillation of hot plasma loops. For the multiperiodic pulsations, other generation mechanisms could not be completely ruled out.  
Formability analysis of hot-rolled dual-phase steel during the multistage stamping process of wheel disc 期刊论文  OAI收割
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY, 2020, 卷号: 110, 期号: 5-6, 页码: 1563-1573
作者:  Chen, Weijin;  Song, Hongwu;  Lazarescu, Lucian;  Xu, Yong;  Zhang, Shi-Hong
  |  收藏  |  浏览/下载：15/0  |  提交时间：2021/02/02
Formability analysis of hot-rolled dual-phase steel during the multistage stamping process of wheel disc 期刊论文  OAI收割
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY, 2020, 卷号: 110, 期号: 5-6, 页码: 1563-1573
作者:  Chen, Weijin;  Song, Hongwu;  Lazarescu, Lucian;  Xu, Yong;  Zhang, Shi-Hong
  |  收藏  |  浏览/下载：20/0  |  提交时间：2021/02/02
No pulsed radio emission during a bursting phase of a Galactic magnetar 期刊论文  OAI收割
Nature, 2020, 卷号: 587, 页码: 63-65
作者:  HXMT
  |  收藏  |  浏览/下载：51/0  |  提交时间：2022/02/08
Astrophysics - High Energy Astrophysical Phenomena  Abstract: Fast radio bursts (FRBs) are millisecond-duration radio transients of unknown physical origin observed at extragalactic distances1-3. It has long been speculated that magnetars are the engine powering repeating bursts from FRB sources4-13, but no convincing evidence has been collected so far14. Recently, the Galactic magnetar SRG 1935+2154 entered an active phase by emitting intense soft íray bursts15. One FRB-like event with two peaks (FRB 200428) and a luminosity slightly lower than the faintest extragalactic FRBs was detected from the source, in association with a soft íray/hard-X-ray flare18-21. Here we report an eight-hour targeted radio observational campaign comprising four sessions and assisted by multi-wavelength (optical and hard-X-ray) data. During the third session, 29 soft-íray repeater (SGR) bursts were detected in íray energies. Throughout the observing period, we detected no single dispersed pulsed emission coincident with the arrivals of SGR bursts, but unfortunately we were not observing when the FRB was detected. The non-detection places a fluence upper limit that is eight orders of magnitude lower than the fluence of FRB 200428. Our results suggest that FRB-SGR burst associations are rare. FRBs may be highly relativistic and geometrically beamed, or FRB-like events associated with SGR bursts may have narrow spectra and characteristic frequencies outside the observed band. It is also possible that the physical conditions required to achieve coherent radiation in SGR bursts are difficult to satisfy, and that only under extreme conditions could an FRB be associated with an SGR burst.