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浏览/检索结果: 共80条，第1-10条 帮助

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Performance Evaluation and Application Field Analysis of Precise Point Positioning Based on Different Real-Time Augmentation Information 期刊论文  OAI收割
REMOTE SENSING, 2024, 卷号: 16, 期号: 8, 页码: 18
作者:  Wu, Mengjun;  Wang, Le;  Xie, Wei;  Yue, Fan;  Cui, Bobin
  |  收藏  |  浏览/下载：12/0  |  提交时间：2025/04/03
Enhanced Built-in Electric Field Promotes Photocatalytic Hydrogen Performance of Polymers Derived from the Introduction of B <- N Coordination Bond 期刊论文  OAI收割
ADVANCED SCIENCE, 2022, 页码: 8
作者:  Ru, Chenglong;  Chen, Peiyan;  Wu, Xuan;  Chen, Changjuan;  Zhang, Jin
  |  收藏  |  浏览/下载：27/0  |  提交时间：2023/03/31
Timing and evolution of PSR B0950+08 期刊论文  OAI收割
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2022, 卷号: 512, 期号: 4, 页码: 4689-4696
作者:  Huang, Hai-tao;  Zhou, Xia;  Yuan, Jian-ping;  Zheng, Xiao-Ping
  |  收藏  |  浏览/下载：30/0  |  提交时间：2022/07/28
Non-axisymmetric Homann stagnation-point flow of unsteady Walter's B nanofluid over a vertical cylindrical disk 期刊论文  OAI收割
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART E-JOURNAL OF PROCESS MECHANICAL ENGINEERING, 2021, 页码: 13
作者:  Ahmad, Latif;  Javed, Saleem;  Khan, Muhammad Ijaz;  Khan, M. Riaz;  El-Zahar, Essam Roshdy
  |  收藏  |  浏览/下载：35/0  |  提交时间：2022/04/02
The braking index of PSR B0540-69 and the associated pulsar wind nebula emission after spin-down rate transition 期刊论文  OAI收割
Monthly Notices of the Royal Astronomical Society, 2020, 卷号: 494, 页码: 1865-1870
作者:  HXMT
  |  收藏  |  浏览/下载：57/0  |  提交时间：2022/02/08
stars: magnetic field  stars: neutron  pulsars: general  Astrophysics  - High Energy Astrophysical Phenomena  Abstract: In 2011 December, PSR B054-69 experienced a spin-down rate transition (SRT), after which the spin-down power of the pulsar increased by $\sim 36{{\ \rm per\ cent}}$. About 1000 d after the SRT, the X-ray luminosity of the associated pulsar wind nebula (PWN) was found to brighten by $32\pm 8{{\ \rm per\ cent}}$. After the SRT, the braking index n of PSR B0540-69 changes from n = 2.12 to 0.03 and then keeps this value for about five years before rising to n = 0.9 in the following years. We find that most of the current models have difficulties in explaining the measured braking index. One exceptive model of the braking index evolution is the increasing dipole magnetic field of PSR B0540-69. We suggest that the field increase may result from some instabilities within the pulsar core that enhance the poloidal component at the price of toroidal component of the magnetic field. The increasing dipole magnetic field will result in the X-ray brightening of the PWN. We fit the PWN X-ray light curve by two models: one assumes a constant magnetic field within the PWN during the brightening and the other assumes an enhanced magnetic field proportional to the energy density of the PWN. It appears that the two models fit the data well, though the later model seems to fit the data a bit better. This provides marginal observational evidence that magnetic field in the PWN is generated by the termination shock. Future high-quality and high-cadence data are required to draw a solid conclusion.  
Preparation of thin NiCrBSi laser cladding layers with no microcracking and low dilution 期刊论文  OAI收割
JOURNAL OF LASER APPLICATIONS, 2019, 卷号: 31, 期号: 3
作者:  Zhang, Qingke;  Wang, Zheng;  Hu, Fangqin;  Song, Zhenlun
  |  收藏  |  浏览/下载：36/0  |  提交时间：2019/12/18
n-Type Azaacenes Containing B <- N Units 期刊论文  OAI收割
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2018, 卷号: 57, 期号: 7, 页码: 2000-2004
作者:  Min, Yang;  Dou, Chuandong
  |  收藏  |  浏览/下载：68/0  |  提交时间：2019/04/09
Bay-annulated indigo based near-infrared sensitive polymer for organic solar cells 期刊论文  OAI收割
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, 2018, 卷号: 56, 期号: 2, 页码: 213-220
作者:  Zhu, Jingshuai;  Li, Tengfei;  Shi, Keli;  Wang, Jiayu;  Lin, Yuze
  |  收藏  |  浏览/下载：49/0  |  提交时间：2018/03/12
A New Set of Parameters of High-Mass X-ray Binaries Found with their Cyclotron Lines 期刊论文  OAI收割
arXiv e-prints, 2018
作者:  Zhang, Chengmin;  Taani, Ali;  Chaty, Sylvain;  Karino, Shigeyuki;  Song, Liming
  |  收藏  |  浏览/下载：76/0  |  提交时间：2019/07/12
Astrophysics - High Energy Astrophysical Phenomena  Abstract: We have derived new physical quantities for several High-Mass X-ray Binaries (HMXBs) with supergiant (SG) companions through their cyclotron lines. The parameters are: the terminal velocity of the wind, the mass loss rate of the donor, the effective temperature and the magnetic fields. These parameters influence significantly the improvement of the model of accretion. In spite of the variety of their observational properties, the corresponding magnetic field is around B ~ 10^12 G. This result can be constrained by the effects on stellar evolution. In addition, we have performed a segmentation in the parameter space of donors intended for several SG-HMXB listed in our sample set. The parameter space can be categorized into five regimes depending on the possibility of disk formation associated with accretion from the stellar wind. This can give a quantitative clarification of the observed variability and the properties of these objects. We show that, when these systems come into the direct accretion region, systems with corresponding parameters can emit X-rays.  
Investigating the multifrequency pulse profiles of PSRs B0329+54 and B1642-03 in an inverse Compton scattering model 期刊论文  OAI收割
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2017, 卷号: 468, 期号: 4, 页码: 4389-4398
作者:  Shang, Lun-Hua;  Lu, Ji-Guang;  Du, Yuan-Jie;  Hao, Long-Fei;  Li, Di
  |  收藏  |  浏览/下载：38/0  |  提交时间：2019/04/08