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CAS IR Grid
机构
地理科学与资源研究所 [5]
南海海洋研究所 [1]
长春光学精密机械与物... [1]
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水土保持研究所 [1]
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OAI收割 [9]
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期刊论文 [6]
SCI/SSCI论文 [2]
会议论文 [1]
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2023 [1]
2020 [1]
2019 [2]
2017 [1]
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Meteorolog... [2]
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Relationship between the North Atlantic sea surface temperature and the summer extreme high temperature in the Beijing-Tianjin-Hebei region, China
期刊论文
OAI收割
URBAN CLIMATE, 2023, 卷号: 52, 页码: 12
作者:
Yang, Haiyi
;
Yang, Fei
;
Sun, Leigang
;
Ye, Yangbo
;
Zhu, Shengli
  |  
收藏
  |  
浏览/下载:17/0
  |  
提交时间:2024/03/01
Beijing -Tianjin -Hebei region
Extreme high temperature days
Sea surface temperature
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:58/0
  |  
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.
Regional Temperature Response in Central Asia to National Committed Emission Reductions
期刊论文
OAI收割
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH, 2019, 卷号: 16, 期号: 15, 页码: 15
作者:
Zhang, Jintao
;
Wang, Fang
  |  
收藏
  |  
浏览/下载:21/0
  |  
提交时间:2020/03/23
INDC pledge
Central Asia
extreme high temperature
Regional Temperature Response in Central Asia to National Committed Emission Reductions
期刊论文
OAI收割
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH, 2019, 卷号: 16, 期号: 15, 页码: 15
作者:
Zhang, Jintao
;
Wang, Fang
  |  
收藏
  |  
浏览/下载:23/0
  |  
提交时间:2020/03/23
INDC pledge
Central Asia
extreme high temperature
Dynamic changes in temperature extremes and their association with atmospheric circulation patterns in the Songhua River Basin, China
期刊论文
OAI收割
ATMOSPHERIC RESEARCH, 2017, 卷号: 190, 页码: 77-88
作者:
Qin, Chao
;
Zhong, Keyuan
;
Zheng, Fenli
;
Wu, Hongyan
;
Xu, Ximeng
  |  
收藏
  |  
浏览/下载:24/0
  |  
提交时间:2018/04/12
Extreme Temperature Events
Arctic Oscillation Index
Subtropical High
Asia Polar Vortex
Multivariate Enso Index
Recent advances on reconstruction of climate and extreme events in China for the past 2000 years
SCI/SSCI论文
OAI收割
2016
作者:
Ge Q. S.
;
Zheng, J. Y.
;
Hao, Z. X.
;
Liu, Y.
;
Li, M. Q.
  |  
收藏
  |  
浏览/下载:23/0
  |  
提交时间:2017/11/09
high-resolution paleoclimatic reconstruction
extreme events
China
2000 years
qinghai-tibetan plateau
asian summer monsoon
tree-ring width
northern-hemisphere temperature
low-frequency variability
last 2
millennia
qilian mountains
eastern china
lower reaches
high-resolution
Heat stress impacts on wheat growth and yield were reduced in the Huang-Huai-Hai Plain of China in the past three decades
SCI/SSCI论文
OAI收割
2015
作者:
Tao F. L.
;
Zhang, Z.
;
Zhang, S.
;
Rotter, R. P.
收藏
  |  
浏览/下载:39/0
  |  
提交时间:2015/12/09
Adaptation
Crop production
Cultivars
Extreme climate
Impacts
Phenology
high-temperature stress
climate-change
winter-wheat
spring wheat
crop yields
day length
trends
variability
senescence
phenology
Summer high temperature extremes in Southeast China associated with the East Asian jet stream and circumglobal teleconnection
期刊论文
OAI收割
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2013, 卷号: 118, 期号: 15, 页码: 8306-8319
[Wang, Weiwen
;
Zhou, Wen] City Univ Hong Kong, Sch Energy & Environm, Guy Carpenter Asia Pacific Climate Impact Ctr, Hong Kong 00852, Hong Kong, Peoples R China
;
[Wang, Weiwen
;
Wang, Xin] Chinese Acad Sci, State Key Lab Trop Oceanog, South China Sea Inst Oceanol, Guangzhou, Guangdong, Peoples R China
;
[Fong, Soi Kun
;
Leong, Ka Cheng] Macao Meteorol & Geophys Bur, Taipa, Peoples R China
收藏
  |  
浏览/下载:42/0
  |  
提交时间:2015/01/14
high temperature extreme
jet stream
circumglobal teleconnection
East Asia
Application of high-precision fuzzy control alorithm with self-regulation factor in RF hyperthermia system (EI CONFERENCE)
会议论文
OAI收割
6th International Conference on Machine Learning and Cybernetics, ICMLC 2007, August 19, 2007 - August 22, 2007, Hong Kong, China
Wang B.-D.
;
Chen Y.-Y.
;
Jiang C.-H.
收藏
  |  
浏览/下载:33/0
  |  
提交时间:2013/03/25
RF hyperthermia system is a kind of medical device to restrain and kill cancer tumor base on RF heating technique and biology heating effect theory. The mathematical model of the control system is very difficult to be formed due to the extreme complication physical process of temperature increase during the thermal treatment and the various structure and characteristic of internal tissues. In this paper
we present a new fuzzy control algorithm
in which a self-regulation factor is adopted to realize real-time temperature control with high-precision controller. By means of software arithmetic and hardware adjustment
accurate temperature and time control can be achieved in this system. 2007 IEEE.