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浏览/检索结果: 共27条，第1-10条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Modeling magnetic soft continuum robot in nonuniform magnetic fields via energy minimization 期刊论文  OAI收割 INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES, 2024, 卷号: 282, 页码: 14 作者:  Li, Jiyu;  Wang, Liu   |  收藏  |  浏览/下载：11/0  |  提交时间：2024/10/08 Nonuniform magnetic field  Magneto-mechanical behavior  Energy minimization  Magnetic soft continuum robot  Hard-magnetic elastica  Sequential quadratic programming   Model-guided navigation of magnetic soft guidewire for safe endovascular surgery 期刊论文  OAI收割 JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS, 2024, 卷号: 190, 页码: 20 作者:  Li, Jiyu;  Chen, Han;  Wang, Liu   |  收藏  |  浏览/下载：12/0  |  提交时间：2024/07/26 Magnetic soft guidewire  Hard-magnetic soft material  Endovasular constraints  Energy minimization method   Hard-rock investigation using a non-invasive geophysical approach 期刊论文  OAI收割 JOURNAL OF APPLIED GEOPHYSICS, 2022, 卷号: 206, 页码: 12 作者:  Hasan, Muhammad;  Shang, Yanjun   |  收藏  |  浏览/下载：21/0  |  提交时间：2023/04/03 Electrical resistivity tomography (ERT)  Rock mass quality  Rock quality designation (RQD)  Joint Profile Method (JPM)  Magnetic  Hard rock   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：27/0  |  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.   Introducing a special collection of papers in the Journal of High Energy Astrophysics on the Early Results of China's 1st X-ray Astronomy Satellite: Insight-HXMT 期刊论文  OAI收割 Journal of High Energy Astrophysics, 2020, 卷号: 27, 页码: 51-52 作者:  HXMT   |  收藏  |  浏览/下载：51/0  |  提交时间：2022/02/08 Astrophysics - High Energy Astrophysical Phenomena  Abstract: Insight-HXMT is the first Chinese X-ray astronomical mission, launched successfully on June 15, 2017, from China's Jiuquan Satellite Launch Center. Insight-HXMT was designed to have a broad energy coverage in X-rays, from 1-250 keV, with excellent timing and adequate energy resolution at soft X-rays, and the largest effective area at hard X-rays. This allows, in particular, to observe bright sources like X-ray binaries (XRBs) in their bright/outburst states with high cadence and high statistics at hard and soft X-rays at once. It was then expected that the Insight-HXMT mission will bring us new insights regarding the characteristics of several source classes. Examples include characterizing High-Mass X-ray Binaries (HMXBs) and the outburst evolution of Low-Mass X-ray Binaries (LMXBs). For instance, in HMXB systems, the region around their Alfven radius that is responsible to determine whether accretion or propeller occurs, or the region around the NS magnetic pole where the intense X-rays are supposed to be produced are specially appealing targets of study. For the LMXBs, the evolution the outburst and the properties of the compact objects themselves are obvious priority targets for Insight-HXMT. Due to the broad coverage in energy, Insight-HXMT is specially well suited to study the influence of thermonuclear (type-I) X-ray bursts upon the surrounding environment.   Assessment of Aquifer Vulnerability Using Integrated Geophysical Approach in Weathered Terrains of South China 期刊论文  OAI收割 OPEN GEOSCIENCES, 2019, 卷号: 11, 期号: 1, 页码: 1129-1150 作者:  Hasan, Muhammad;  Shang, Yanjun;  Jin, Weijun;  Akhter, Gulraiz   |  收藏  |  浏览/下载：31/0  |  提交时间：2020/05/19 Electrical resistivity tomography (ERT)  Hard-rock aquifers  weathered terrains  magnetic method  hydraulic conductivity  transmissivity  groundwater resources   Magnetic structure of solar flare regions producing hard X-ray pulsations 期刊论文  OAI收割 JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS, 2018, 卷号: 174, 页码: 17-27 作者:  Zimovets, I., V;  Wang, R.;  Liu, Y. D.;  Wang, C.;  Kuznetsov, S. A.   |  收藏  |  浏览/下载：43/0  |  提交时间：2018/08/13 Solar Flares  Magnetic Field  Magnetic Flux Rope  Hard X-ray  Pulsations   The Microstructure and Water Distribution of Partially Saturated Hard Clay 期刊论文  OAI收割 GEOTECHNICAL TESTING JOURNAL, 2018, 卷号: 41, 期号: 4, 页码: 830-835 作者:  Chen, Liufeng;  Peng, Hua;  Yang, Diansen   |  收藏  |  浏览/下载：34/0  |  提交时间：2020/04/08 microstructure  water distribution  partially saturated hard clay  nuclear magnetic resonance relaxometry  mercury intrusion porosimetry  T-2 relaxation time distribution   Recent developments of rare-earth-free hard-magnetic materials 期刊论文  OAI收割 SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY, 2016, 卷号: 59, 期号: 1, 页码: - Li, Da; Pan, DeSheng; Li, ShaoJie; Zhang, ZhiDong 收藏  |  浏览/下载：30/0  |  提交时间：2016/04/21 rare-earth-free hard-magnetic phases  coercivity  magnetic anisotropy  magnetic proper-ties of nanostructures   Quasilogarithmic magnetic viscosity in perpendicularly anisotropic Nd-Fe-B films 期刊论文  OAI收割 Journal of Magnetism and Magnetic Materials, 2012, 卷号: 324, 期号: 18, 页码: 2854-2857 Q. Yao; R. Grossinger; W. Liu; W. B. Cui; F. Yang; X. G. Zhao; Z. D. Zhang 收藏  |  浏览/下载：27/0  |  提交时间：2013/02/05 Magnetic viscosity  Hard magnetic film  NdFeB  Perpendicular anisotropy