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北京大学 [4]
清华大学 [3]
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期刊论文 [11]
会议论文 [6]
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Constant cyclotron line energy in Hercules X-1 - Joint Insight-HXMT and NuSTAR observations
期刊论文
Journal of High Energy Astrophysics, 2019, 卷号: 23, 页码: 29-32
作者:
HXMT
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  |  
浏览/下载:42/0
  |  
提交时间:2022/02/08
Stars: neutron star
Pulsars: binary(Her X-1)
X-rays: stars
Astrophysics - High Energy Astrophysical Phenomena
Abstract: The long-term evolution of the centroid energy of the CRSF in Her X-1 is still a mystery. We report a new measurement from a campaign between Insight-HXMT and NuSTAR performed in February 2018. Generally, the two satellites show well consistent results of timing and spectral properties. The joint spectral analysis confirms that the previously observed long decay phase has ended, and that the line energy instead keeps constant around 37.5 keV after flux correction.
Combined integral method for mid/long-term dynamic simulation of power system
期刊论文
Electric Power Automation Equipment, 2017, 卷号: Vol.37 No.2, 页码: 113-120
作者:
Zhang, F.a
;
Qiu, X.a
;
Li, C.b
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  |  
浏览/下载:9/0
  |  
提交时间:2019/11/21
electric power systems
electromechanical transient
mid/long-term dynamic
stiff system
new combined integral method
Potential health benefits of controlling dust emissions in Beijing
期刊论文
ENVIRONMENTAL POLLUTION, 2016
Meng, Jing
;
Liu, Junfeng
;
Fan, Songmiao
;
Kang, Chuyun
;
Yi, Kan
;
Cheng, Yanli
;
Shen, Xing
;
Tao, Shu
收藏
  |  
浏览/下载:10/0
  |  
提交时间:2017/12/03
Road dust
PM2.5
Health impact
Air pollution control
PARTICULATE AIR-POLLUTION
NEW-YORK-CITY
AEROSOL CHEMICAL-COMPONENTS
TIME-SERIES ANALYSIS
LONG-TERM EXPOSURE
DECOMPOSITION ANALYSIS
ROAD DUST
UNITED-STATES
SEASONAL DISTRIBUTION
PREMATURE MORTALITY
大气复合污染条件下新粒子生成和增长机制及其环境影响
期刊论文
化学学报, 2016
胡敏
;
尚冬杰
;
郭松
;
吴志军
收藏
  |  
浏览/下载:19/0
  |  
提交时间:2017/12/04
新粒子生成
颗粒物增长
转化机制
环境效应
大气复合污染
new particle formation
particle growth
transformation mechanism
environmental impact
complex air pollution
CLOUD CONDENSATION NUCLEI
NUMBER SIZE DISTRIBUTIONS
ATMOSPHERIC NANOPARTICLE GROWTH
SULFURIC-ACID CONCENTRATION
SECONDARY ORGANIC AEROSOL
FORMATION EVENTS
LONG-TERM
URBAN ATMOSPHERE
RIVER DELTA
NUCLEATION
Connection of organics to atmospheric new particle formation and growth at an urban site of Beijing
期刊论文
大气环境, 2015
Wang, Z. B.
;
Hu, M.
;
Pei, X. Y.
;
Zhang, R. Y.
;
Paasonen, P.
;
Zheng, J.
;
Yue, D. L.
;
Wu, Z. J.
;
Boy, M.
;
Wiedensohler, A.
收藏
  |  
浏览/下载:6/0
  |  
提交时间:2015/11/10
New particle formation
Sulfuric acid
Organic vapor
Particle growth
NUCLEATION MODE PARTICLES
CLOUD CONDENSATION NUCLEI
NUMBER SIZE DISTRIBUTIONS
SULFURIC-ACID CONCENTRATION
AEROSOL FORMATION
LONG-TERM
NANOPARTICLE GROWTH
OXIDATION-PRODUCTS
INITIAL STEPS
BOREAL FOREST
Applying land use regression model to estimate spatial variation of PM2.5 in Beijing, China
SCI/SSCI论文
2015
作者:
Wu J. S.
;
Li, J. C.
;
Peng, J.
;
Li, W. F.
;
Xu, G.
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  |  
浏览/下载:51/0
  |  
提交时间:2015/12/09
Land use regression
Fine particulate matter
PM2.5
Spatiotemporal
variation
Outdoor exposure
Air pollution
Beijing
particulate air-pollution
new-york-city
ambient fine particulate
long-term exposure
source apportionment
urban area
matter
concentrations
ultrafine particles
sulfur-dioxide
united-states
Some New Oscillation Criteria for a Class of Nonlinear Fractional Differential Equations with Damping Term
期刊论文
Journal of applied mathematics, 2013, 页码: 912072-1-912072-11
作者:
Bin Zheng
;
Qinghua Feng
收藏
  |  
浏览/下载:8/0
  |  
提交时间:2019/12/23
Some New Oscillation Criteria
a Class of Nonlinear Fractional Differential Equations
Damping Term
Research of software re-injection technology for aerospace camera controller in-orbit (EI CONFERENCE)
会议论文
2012 9th IEEE International Conference on Mechatronics and Automation, ICMA 2012, August 5, 2012 - August 8, 2012, Chengdu, China
Xu W.
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  |  
浏览/下载:17/0
  |  
提交时间:2013/03/25
For the factors of increased of tasks
enhancements of functions and improvement of integrity and complexity in aerospace camera
application system has raised high and long-term in-orbit autonomy and reliability requirements on camera controller. Based on an actual project application background
this paper has put forward a design method of new high reliability aerospace camera controller in-orbit software reinjection instruction sequence which use TSC695F as kernel CPU and process flow of bootstrap receive
cache
checkout and storage update data. Finally
combined with specific test module for camera controller software re-injection
the validity of the software re-injection method raised here has been verified. Still here gives out reference codes of update data package which generated by the ground. 2012 IEEE.
Automatic term extraction from Chinese scientific texts
会议论文
作者:
Zheng, Qinghua
;
Luo, Junying
;
Liu, Jun
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  |  
浏览/下载:3/0
  |  
提交时间:2019/12/10
Automatic term extraction
Different domains
Domain independences
Linguistic methods
New approaches
Scientific texts
Term extraction
Long-Term Behavior of Prestressed Old-New Concrete Composite Beams
期刊论文
JOURNAL OF BRIDGE ENGINEERING, 2011, 卷号: 16, 页码: 275-285
作者:
Wang, Wen-wei
;
Dai, Jian-guo
;
Li, Guo
;
Huang, Cheng-kui
收藏
  |  
浏览/下载:1/0
  |  
提交时间:2019/12/18
Old-new concrete composite beam
Long-term deflection
Incremental model
Prestress
Creep
Shrinkage
Prestress loss
Old-to-new concrete interface
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