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Newly assimilated carbon allocation in grassland communities under different grazing enclosure times
期刊论文
BIOLOGY AND FERTILITY OF SOILS, 2021, 卷号: 57, 期号: 4, 页码: 563-574
作者:
Bai, Xuejuan
;
Yang, Xuan
;
Zhang, Shumeng
;
An, Shaoshan
收藏
  |  
浏览/下载:50/0
  |  
提交时间:2021/06/10
Carbon allocation
C-13 pulse labeling
Grazing exclosure
Plant soil atmosphere system
Methane emissions in grazing systems in grassland regions of China: A synthesis
期刊论文
SCIENCE OF THE TOTAL ENVIRONMENT, 2019, 卷号: 654, 页码: 662-670
作者:
Tang, Shiming
;
Ma, Lei
;
Wei, Xiaoting
;
Tian, Dashuan
;
Wang, Bojie
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  |  
浏览/下载:67/0
  |  
提交时间:2019/05/22
CH4 budget
Grazing intensity
Grazing system
Soil CH4 uptake
CH4 emissions
Offset
Global dynamics of a mechanical system with dry friction
期刊论文
JOURNAL OF DIFFERENTIAL EQUATIONS, 2018, 卷号: 265, 页码: 5490-5519
作者:
Chen, Hebai
;
Duan, Sen
;
Tang, Yilei
;
Xie, Jianhua
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  |  
浏览/下载:2/0
  |  
提交时间:2019/11/21
Limit cycle
Discontinuous piecewise differential system
Global phase portrait
Grazing-sliding bifurcation
Grazing bifurcation
Urbanization and environmental policy effects on the future availability of grazing resources on the Mongolian Plateau: Modeling socio-environmental system dynamics
期刊论文
ENVIRONMENTAL SCIENCE & POLICY, 2017
Allington, Ginger R. H.
;
Li, Wei
;
Brown, Daniel G.
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  |  
浏览/下载:2/0
  |  
提交时间:2017/12/03
Grassland
Climate
Livestock
Grazing Desertification
Net primary production
System dynamics model
INNER-MONGOLIA
LOCAL INSTITUTIONS
LAND DEGRADATION
NATURAL SYSTEMS
COUPLED HUMAN
CHINA
GRASSLANDS
RANGELAND
RESTORATION
ADAPTATION
Discrete-in-time feedback control of near-grazing dynamics in the two-degree-of-freedom vibro-impact system with a clearance
期刊论文
Nonlinear Dynamics, 2017, 卷号: Vol.87 No.2, 页码: 1127-1137
作者:
Xu, HD
;
Yin, S
;
Wen, GL
;
Zhang, SJ
;
Lv, ZY
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  |  
浏览/下载:2/0
  |  
提交时间:2019/12/31
Vibro-impact system
Grazing bifurcation
Discontinuity mapping
Stability
Bifurcation control
Complexity analysis of network-based dynamical systems
期刊论文
journal of systems science complexity, 2011
Zhang, Guofeng
;
Wang, Long
;
Chen, Tongwen
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  |  
浏览/下载:3/0
  |  
提交时间:2015/11/12
Bifurcation
feedback
network-based dynamical system
non-convexity
periodicity
BORDER-COLLISION BIFURCATIONS
DISTRIBUTED CONTROL-SYSTEMS
PIECEWISE-SMOOTH SYSTEMS
GRAZING BIFURCATIONS
IMPACT OSCILLATORS
PERFORMANCE EVALUATION
ROBUST CHAOS
COMMUNICATION
STABILITY
FEEDBACK
Compact TEM/sub 00/ grazing-incidence Nd:GdVO/sub 4/ laser using a folded cavity
期刊论文
2010, 2010
He, F.
;
Gong, M.
;
Huang, L.
;
Liu, Q.
;
Wang, Q.
;
Yan, X.
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  |  
浏览/下载:2/0
1D-KBA microscope using double-periodic multilayer (EI CONFERENCE)
会议论文
Advances in X-Ray/EUV Optics and Components IV, August 3, 2009 - August 5, 2009, San Diego, CA, United states
Mu B.
;
Wang Z.
;
Yi S.
;
Zhu J.
;
Wang X.
;
Jiang L.
;
Huang Q.
;
Bai Y.
收藏
  |  
浏览/下载:9/0
  |  
提交时间:2013/03/25
To study the action of shock wave in CH target
one-dimensional grazing incidence KBA microscope for 4.75keV energy was set up. Because of strong absorption in air
4.75keV energy microscope can just work in vacuum. Accordingly
the alignment and assemblage will be very complicated and difficult. A special multilayer method
using double periodic multilayer
was proposed to solve this problem. This multilayer has high reflectivity not only for 4.75keV X-rays but also for 8keV X-rays at the same grazing incidence angle. It means 1D-KBA microscope has the same light trace for different working energies. Therefore
we can implement the alignment and assembly of 4.75keV system by the help of 8keV X-rays. Because 8keV X-rays is very easy produced by X-ray tube and has strong transmittability in air
the alignment and assemblage process became relatively easy. By now
we have finished the alignment experiment at 8keV and obtained imaging results. The performance is about 2-3m resolution in 250m field of view. It is coincide with the calculation. 2009 SPIE.
Assessment of surface roughness by use of soft x-ray scattering (EI CONFERENCE)
会议论文
Soft X-Ray Lasers and Applications VIII, August 4, 2009 - August 6, 2009, San Diego, CA, United states
Yan-li M.
;
Yong-gang W.
;
Shu-yan C.
;
Bo C.
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  |  
浏览/下载:16/0
  |  
提交时间:2013/03/25
A soft x-ray reflectometer with laser produced plasma source has been designed
which can work from wavelength 8nm to 30 nm and has high performance. Using the soft x-ray reflectometer above
the scattering light distribution of silicon and zerodur mirrors which have super-smooth surfaces could be measured at different incidence angle and different wavelength. The measurement when the incidence angle is 2 degree and the wavelength is 1 lnm has been given in this paper. A surface scattering theory of soft x-ray grazing incidence optics based on linear system theory and an inverse scattering mathematical model is introduced. The vector scattering theory of soft x-ray scattering also is stated in detail. The scattering data are analyzed by both the methods above respectively to give information about the surface profiles. On the other hand
both the two samples are measured by WYKO surface profiler
and the surface roughness of the silicon and zerodur mirror is 1.3 nm and 1.5nm respectively. The calculated results are in quantitative agreement with those measured by WYKO surface profiler
which indicates that soft x-ray scattering is a very useful tool for the evaluation of highly polished surfaces. But there still some difference among the results of different theory and WYKO
and the possible reasons of such difference have been discussed in detail. 2009 SPIE.
Population dynamics and responses to management of plateau pikas Ochotona curzoniae
期刊论文
journal of applied ecology, 2007, 卷号: 44, 期号: 3, 页码: 615-624
作者:
Pech, Roger P.
;
Jiebu
;
Arthur, Anthony D.
;
Zhang Yanming
;
Hui, Lin
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  |  
浏览/下载:12/0
  |  
提交时间:2009/12/07
alpine meadow
grazing system
pest control
plateau pika
rate of increase
Tibetan sheep
yak
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