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Chinese Academy of Sciences Institutional Repositories Grid
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CAS IR Grid
机构
长春光学精密机械与物... [2]
地理科学与资源研究所 [1]
生态环境研究中心 [1]
采集方式
OAI收割 [4]
内容类型
会议论文 [2]
期刊论文 [2]
发表日期
2026 [1]
2021 [1]
2011 [1]
2006 [1]
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Thinning altered the optimum photosynthetic environment in a subtropical coniferous plantation
期刊论文
OAI收割
SCIENTIFIC REPORTS, 2026, 卷号: 16, 期号: 1, 页码: 4867
作者:
Li, Shengtong
;
Xu, Mingjie
;
Yang, Fengting
;
Song, Jiaxin
;
Shi, Xinyi
  |  
收藏
  |  
浏览/下载:1/0
  |  
提交时间:2026/03/16
Thinning
Forest
GPP
Optimum environment
Eddy covariance
Improved Global Maps of the Optimum Growth Temperature, Maximum Light Use Efficiency, and Gross Primary Production for Vegetation
期刊论文
OAI收割
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES, 2021, 卷号: 126, 期号: 4, 页码: e2020JG005651
作者:
Chen, Yongzhe
;
Feng, Xiaoming
;
Fu, Bojie
;
Wu, Xutong
;
Gao, Zhen
  |  
收藏
  |  
浏览/下载:58/0
  |  
提交时间:2022/02/11
global GPP
interaction between plants and environment
light use efficiency model
maximum light use efficiency
optimum growth temperature
Optimum design of the carbon fiber thin-walled baffle for the space-based camera (EI CONFERENCE)
会议论文
OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications, May 24, 2011 - May 26, 2011, Beijing, China
Yan Y.
;
Gu S.
;
An Y.
;
Jin G.
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浏览/下载:32/0
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提交时间:2013/03/25
The thin-walled baffle design of the space-based camera is an important job in the lightweight space camera research task for its stringent quality requirement and harsh mechanical environment especially for the thin-walled baffle of the carbon fiber design. In the paper
an especially thin-walled baffle of the carbon fiber design process was described and it is sound significant during the other thin-walled baffle design of the space camera. The designer obtained the design margin of the thin-walled baffle that structural stiffness and strength can tolerated belong to its development requirements through the appropriate use of the finite element analysis of the walled parameters influence sensitivity to its structural stiffness and strength. And the designer can determine the better optimization criterion of thin-walled baffle during the geometric parameter optimization process in such guiding principle. It sounds significant during the optimum design of the thin-walled baffle of the space camera. For structural stiffness and strength of the carbon fibers structure which can been designed
the effect of the optimization will be more remarkable though the optional design of the parameters chose. Combination of manufacture process and design requirements the paper completed the thin-walled baffle structure scheme selection and optimized the specific carbon fiber fabrication technology though the FEM optimization
and the processing cost and process cycle are retrenchment/saved effectively in the method. Meanwhile
the weight of the thin-walled baffle reduced significantly in meet the design requirements under the premise of the structure. The engineering prediction had been adopted
and the related result shows that the thin-walled baffle satisfied the space-based camera engineering practical needs very well
its quality reduced about 20%
the final assessment index of the thin-walled baffle were superior to the overall design requirements significantly. The design method is reasonable and efficient to the other thin-walled baffle that mass and work environment requirement is requirement harsh. 2011 SPIE.
Support technique of ultra thin mirror in space optics (EI CONFERENCE)
会议论文
OAI收割
2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, November 2, 2005 - November 5, 2005, Xian, China
作者:
Ren J.-Y.
;
Gao M.-H.
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浏览/下载:58/0
  |  
提交时间:2013/03/25
With the development of space optical system
the technique of ultra thin mirror come forth and is paid more attention because of less difficulty in machining
low cost
lightweight
no disassembly during detecting and maintaining. The key technique takes advantage of deformation of ultra thin mirror as the influence of environment to adjust the surface figure. Its accuracy meets requirement. An analysis method is based on finite element analysis (FEA)
and many items
including the amount of support points
the way of arrangement
the optimum design of support component are studied. The finite element method was used to analyze the mirror and some different mirror support schemes. The principal aim of the mirror analysis is to get numbers of support points and the ways of the support. There are three schemes including 12-6-1
12-8-1 and 16-8-1 models. Deformation of deadweight is calculated under the three conditions. The way of 16-8-1 is more suitable than the designs of other two. The support subassembly is amended to meet with the mirror surface RMS in the range of 30m. Deformation of the mirror with support structure has been calculated. The result is 16.52nm
lower than a quarter of the wavelength
which indicates the feasibility of the support scheme applied to mirror. Theoretical result for the best way of support is presented. The result of analysis shows that requirement surface figure could be met through adjusting support points. It predicts feasibility of the support technique and provides theoretical value for active adjustment in the laboratory. At present
support and adjusting experiment of ultra thin mirror is being carried on.