机构

• 生态环境研究中心 [3]
• 高能物理研究所 [1]
• 上海硅酸盐研究所 [1]

采集方式

• OAI收割 [5]

内容类型

• 期刊论文 [3]
• 学位论文 [2]

发表日期

• 2020 [1]
• 2018 [1]
• 2017 [1]
• 2009 [1]
• 2005 [1]

学科主题

• 环境工程::水处理工... [2]
• Medicine, ... [1]
• Oncology [1]

筛选

浏览/检索结果: 共5条，第1-5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 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：55/0  |  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.   Comparative study of nanostructured carriers of calcium phosphate and magnesium phosphate loaded with SRT1720 for the protection of H2O2-induced senescent endothelium 期刊论文  OAI收割 AMERICAN JOURNAL OF TRANSLATIONAL RESEARCH, 2018, 卷号: 10, 期号: 7, 页码: 2068, 2077 作者:  Su, Zhi-Xiao;  Shi, Yi-Qin;  Lu, Zhao-Yang;  Li, Rui-Lin;  Wang, Xue-Lian   |  收藏  |  浏览/下载：85/0  |  提交时间：2018/12/28 Nanostucture  calcium phosphate  magnesium phosphate  SRT1720  endothelial cell senescence   Oxygen transfer dynamics and activated sludge floc structure under different sludge retention times at low dissolved oxygen concentrations 期刊论文  OAI收割 CHEMOSPHERE, 2017, 卷号: 169, 期号: 0, 页码: 586-595 作者:  Fan, Haitao;  Liu, Xiuhong;  Wang, Hao;  Han, Yunping;  Wang, Hongchen   |  收藏  |  浏览/下载：26/0  |  提交时间：2018/07/29 Eps  Srt  Floc Structure  Settling Performance  Low Do   膜生物反应器的污泥特征和膜污染研究 学位论文  OAI收割 博士, 北京: 中国科学院研究生院, 2009 欧阳科 收藏  |  浏览/下载：69/0  |  提交时间：2010/06/28 膜生物反应器  污泥特征  膜污染  固体平均停留时间（污泥龄）  微生物代谢产物 membrane bioreactor  sludge characteristics  membrane fouling  sludge retention time(SRT)  extracellular polymeric substances(EPS)   新型一体化立体循环污水生物除磷脱氮反应器的研究 学位论文  OAI收割 博士, 北京: 中国科学院研究生院, 2005 王淑梅 收藏  |  浏览/下载：105/0  |  提交时间：2011/08/17 污水处理  立体循环  富磷污泥  污泥含磷量  释磷  污泥龄  Nutrients removal  phosphorus release  P-rich sludge  SRT  vertical circle regium  wastewater treatment