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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]
地球化学研究所 [1]
沈阳自动化研究所 [1]
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OAI收割 [4]
内容类型
会议论文 [3]
期刊论文 [1]
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2016 [1]
2008 [1]
2007 [1]
2005 [1]
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Time trends of polybrominated diphenyl ethers in East China Seas: Response to the booming of PBDE pollution industry in China
期刊论文
OAI收割
Environment International, Environment International, 2016, 2016, 卷号: 92–93, 92–93, 页码: 507-514, 507-514
作者:
Yuanyuan Li
;
Tian Lin
;
Limin Hu
;
Jialiang Feng
;
Zhigang Guo
  |  
收藏
  |  
浏览/下载:47/0
  |  
提交时间:2019/09/04
Polybrominated Diphenyl EThers
Polybrominated Diphenyl EThers
sediment Record
booming Of The Manufacturing Industry
e-waste
nationwide Regulation
sediment Record
booming Of The Manufacturing Industry
e-waste
nationwide Regulation
Analysis of spectrum narrowing of diode laser bar (EI CONFERENCE)
会议论文
OAI收割
Semiconductor Lasers and Applications III, November 12, 2007 - November 13, 2007, Beijing, China
作者:
Liu Y.
;
Wang L.
;
Wang L.
;
Wang L.
;
Liu Y.
收藏
  |  
浏览/下载:37/0
  |  
提交时间:2013/03/25
Laser diode bar (LDB) are used increasingly often for many applications
but spectral bandwidth of LDB are generally approximately 2-4nm
far too wide for many demanding applications
e.g. spin-exchange optical pumping
terahertz generation
and lidar. External-cavity feedback can improve the spectral properties of LD or LDB. However
spectrum narrowing of LDB is more difficult than that of LD. Bar curvature (i.e. "smile") produced in the manufacturing process affects the spectrum narrowing greatly. By geometrical optics approach and ORIGIN software
smile which can be corrected by plano-convex cylindrical lens is simulated and the result is in good agreement with experiment. The selection of grating which is also a critical factor of spectrum narrowing will be stated. Finally
an external cavity consisting of fast axis collimator
two plano-convex cylindrical lens and a diffraction grating is used. The scheme is implemented on a 19-element LDB and yields 3-fold reduction in spectral linewidth under the situation that all optical elements in the system which are not optimized. Further
we use a slit in the experiment and analyze the spectrum narrowing of each element in LDB.
Research on the support structure of the primary mirror of large-aperture telescope (EI CONFERENCE)
会议论文
OAI收割
3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies, AOMATT 2007: Large Mirrors and Telescopes, July 8, 2007 - July 12, 2007, Chengdu, China
Yang W.
;
Jingxu Z.
收藏
  |  
浏览/下载:61/0
  |  
提交时间:2013/03/25
Large-aperture telescope can be used in surveying battlefield
researching landform
searching object
real-time monitoring
imaging
detecting and identifying spatial targets and so on. A large-aperture telescope for achieving high resolution power is designed to monitor spatial target and image in real time. Real-time monitoring plays an important role in military conflicts. The orbit parameter of object
quantity
geometrical shape parameter and so on can be obtained by detect spatial target. With the development of optical technology
people require larger aperture in optics-electronic (OE) system. By increasing optical aperture
the ability of collecting light and resolution power in the system can be enhanced. But the support structure of the primary mirror of large-aperture telescope will be a very difficult problem. With the increase of primary mirror aperture
the weight of the primary mirror will become larger than before. The root mean square (rms) of the primary mirror is affected by many factors
such as deadweight
deformation of heat
environment and so on. Due to the primary mirror of telescope is an important component of telescope system. By reducing the weight of primary mirror
precision of the system is ensured. During the designing phase
one can consider the supporting project of the primary mirror synthetically and analyze it roundly according to technical requirement of optical system and the effect factors. The final structural design can be reasonable. In an astronomical telescope
the surface of reflector is an important part for collecting dark radiation of celestial bodies. Its surface shape will have an effect on collecting efficiency of telescope radiant energy directly. So the rms must be very high. Optical system of large aperture
small wavelength and small focus can receive maximal light intensity. For ground-based optical astronomical telescope
the design proposed in the paper can satisfy the requirement of the possible minimum atmosphere seeing at astronomical observatory site and exert the use efficiency of the telescope adequately. So the accuracy of the traditional surface of reflector can assure that 90% of all the light energy can be focused on within the angle diameter range of the minimum atmosphere seeing
then 100% of light energy should be focused on the angle diameter range of minimum atmosphere seeing. Because the rms of mirror is very high
precise surface machining and accurate the support of mirror are very important tasks during designing and manufacturing the telescope. In the paper
various support techniques of a large-aperture telescope primary mirror are discussed and a 3.5 meter telescope system at the Starfire Optical Range (SOR) overviewed simply
which was operated by the Directed Energy Directorate of the Air Force Research Laboratory
Kirtland AFB
NM
USA from the ground-based O-E system for the observations of spatial target. We also analyze Theoretical elastic deformation of the Steward Observatory 2.3 meter mirror is analyzed.
Resource allocation based on combinatorial auction in e-manufacturing environment
会议论文
OAI收割
5th International Conference on Computer and Information Technology, Shanghai, China, September 21-23, 2005
作者:
Lv CX(吕赐兴)
;
Zhu YL(朱云龙)
;
Yin CW(尹朝万)
收藏
  |  
浏览/下载:31/0
  |  
提交时间:2012/06/06
e-manufacturing
combinatorial auction
multi-agent system
resource allocation
negotiation policy