中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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浏览/检索结果: 共6条,第1-6条 帮助

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Ecosystem engineering creates a new path to resilience in plants with contrasting growth strategies 期刊论文  OAI收割
OECOLOGIA, 2019, 卷号: 191, 期号: 4, 页码: 1015-1024
作者:  
Soissons, LM;  van Katwijk, MM;  Li, BQ;  Han, QY;  Ysebaert, T
  |  收藏  |  浏览/下载:22/0  |  提交时间:2020/07/08
Improved probiotic viability in stress environments with post-culture of alginate-chitosan microencapsulated low density cells 期刊论文  OAI收割
carbohydrate polymers, 2014, 卷号: 108, 页码: 10-16
作者:  
Song, Huiyi
收藏  |  浏览/下载:20/0  |  提交时间:2015/11/17
Integration of animal behaviors under stresses with different time courses 期刊论文  OAI收割
NEURAL REGENERATION RESEARCH, 2014, 卷号: 9, 期号: 15, 页码: 1464-1473
作者:  
Zheng, Lun;  Zheng, Xigeng
收藏  |  浏览/下载:25/0  |  提交时间:2015/09/18
Oxidation and Thermal Shock Behavior of a Glass-Alumina Composite Coating on K38G Superalloy at 1000 degrees C 期刊论文  OAI收割
Journal of Materials Science & Technology, 2012, 卷号: 28, 期号: 5, 页码: 433-438
M. H. Chen; M. L. Shen; X. Wang; S. L. Zhu; F. H. Wang
收藏  |  浏览/下载:20/0  |  提交时间:2013/02/05
Thermal-structure analysis of supersonic dome based on three materials (EI CONFERENCE) 会议论文  OAI收割
2011 International Conference on Electric Information and Control Engineering, ICEICE 2011, April 15, 2011 - April 17, 2011, Wuhan, China
Jiang Z.; Ai X.; Wei Q.; Liu B.; Jia H.
收藏  |  浏览/下载:30/0  |  提交时间:2013/03/25
To a supersonic missile  a seeker could enhance the aerodynamic ability due to decrease the resistance in flying. At the same time  the primary function of a seeker has been considered as the most important equipment for a missile  due to the importance for cueing of targets and tracking for the final approach. However  the dome of a seeker  which is made up of glass  has poor mechanical performance. Especially  in the higher altitude  for a dome  in which the aerothermal and pressure loads could destroy the structure easily  it is necessary to do the thermal-structure coupled analysis due to varied materials. In the paper  to take the spherical dome of a seeker as a example  the analysis has been completed according to the varied materials consist of MgF2  Al2O3 and ZnS. The temperature loads and the pressure loads derived from the results of fluent analysis has been forced on the surface of dome  which simulates the actual Mach 2.5 in flying. According to the results of coupled analysis  the SEQV stress of the dome radium 80mm based on three materials had reached to 31MPa  which shows that the strength is sufficient for Mach 2.5  and offered the warranty to design the attaching to missile for the dome. At the same time  the results required the flexible mounting for the dome due to the displacements results  which the crystal material couldn't accept. 2011 IEEE.  
Manufacturing and testing of the line-array fiber-optic image slicer based on silicon V-grooves (EI CONFERENCE) 会议论文  OAI收割
MEMS/MOEMS Technologies and Applications III, November 12, 2007 - November 14, 2007, Beijing, China
作者:  
Zhu Y.
收藏  |  浏览/下载:30/0  |  提交时间:2013/03/25
Linear fiber-optic image slicer is used more and more in spatial exploration and imaging system. In this paper  a plane arranging method of fiber-optic array based on Si-V grooves is established in order to improve the accuracy and reduce the cost of manufacturing. Firstly  the Si-V groove array is micro-machined with anisotropic etching process  then optical fibers are placed in the grooves orderly with plane arranging method. Secondly  the end surfaces of the device are polished  also the linear fiber-optic image slicer is packaged. Finally  some parameters are tested  including structure parameters  transmittivity and vibration test. Experimental results indicate that the maximum error accumulated in 2000 periods of the Si-V grooves is 0.5 m  the error of the height in Si-V grooves is less than 0.15m  the roughness of the end surface is less than 0.9nm. The transmittivity of the linear fiber-optic image slicer that without optical film is 51.46% at the wavelength of 632.8nm. After random vibration experiment  the ratio of the broken fiber increased by 0.1%. While the temperature reached 320C  the stress of epoxy will be 130Mpa  which is close to the limit resistance stress of 139Mpa  some cracks appeared.