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浏览/检索结果: 共18条,第1-10条 帮助

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30 T scanning tunnelling microscope in a hybrid magnet with essentially non-metallic design 期刊论文  OAI收割
ULTRAMICROSCOPY, 2020, 卷号: 212
作者:  
Meng, Wenjie;  Zhao, Kesen;  Wang, Jihao;  Zhang, Jing;  Feng, Qiyuan
  |  收藏  |  浏览/下载:22/0  |  提交时间:2020/11/26
Analysis on stress and deformation of large-scale concentric recuperator for high-temperature PbLi loop 期刊论文  OAI收割
INTERNATIONAL JOURNAL OF ENERGY RESEARCH, 2018, 卷号: 42, 期号: 7, 页码: 2583-2592
作者:  
Huang, Shaoqiu;  Zhu, Zhiqiang;  Huang, Wangli
  |  收藏  |  浏览/下载:50/0  |  提交时间:2019/08/23
Experimental study of heat transfer enhancement for molten salt with transversely grooved tube heat exchanger in laminar-transition-turbulent regimes 期刊论文  OAI收割
APPLIED THERMAL ENGINEERING, 2018, 卷号: 132, 页码: 95-101
作者:  
Chen, YS;  Tian, J;  Fu, Y;  Tang, ZF;  Zhu, HH
  |  收藏  |  浏览/下载:12/0  |  提交时间:2018/09/06
Convective heat transfer characteristics in the laminar and transition region of molten salt in concentric tube 期刊论文  OAI收割
APPLIED THERMAL ENGINEERING, 2017, 卷号: 117, 页码: 682-688
作者:  
Chen, YS;  Zhu, HH;  Tian, J;  Fu, Y;  Tang, ZF
  |  收藏  |  浏览/下载:20/0  |  提交时间:2017/12/08
Characteristics of the laminar convective heat transfer of molten salt in concentric tube 期刊论文  OAI收割
APPLIED THERMAL ENGINEERING, 2017, 卷号: 125, 期号: -, 页码: 995-1001
作者:  
Chen, YS;  Tian, J;  Sun, SD;  Sun, Q;  Fu, Y
  |  收藏  |  浏览/下载:18/0  |  提交时间:2018/08/30
Convective heat transfer characteristics in the turbulent region of molten salt in concentric tube 期刊论文  OAI收割
APPLIED THERMAL ENGINEERING, 2016, 卷号: 98, 期号: -, 页码: 213—219
作者:  
Chen, YS;  Wang, Y;  Zhang, JH;  Yuan, XF;  Tian, J
收藏  |  浏览/下载:22/0  |  提交时间:2016/09/12
Controlled focus shaping with generalized cylindrical vector beam 期刊论文  OAI收割
journal of modern optics, 2013, 卷号: 60, 期号: 5, 页码: 391-398
作者:  
Chen, Lingling;  Wang, Jiming;  He, Chongjun;  Liu, Youwen;  Yun, Maojin
收藏  |  浏览/下载:19/0  |  提交时间:2014/09/17
新型搅拌式生物冶金反应器的传递特性研究 学位论文  OAI收割
硕士: 中国科学院研究生院, 2012
周宏宝
收藏  |  浏览/下载:63/0  |  提交时间:2013/09/25
Study on ultra-light secondary baffle for coaxial two-mirror telescope (EI CONFERENCE) 会议论文  OAI收割
2012 9th IEEE International Conference on Mechatronics and Automation, ICMA 2012, August 5, 2012 - August 8, 2012, Chengdu, China
作者:  
Zhang L.;  Zhang L.
收藏  |  浏览/下载:44/0  |  提交时间:2013/03/25
The coaxial two-mirror telescope consists of two mirrors facing each other. Classical two-mirror arrangements are Gregorian and Cassegrain. These systems are usually applied to space telescopes and often have optical baffles to prevent stray light from entering the focal plane. The optical baffles consist of concentric rings suspended between the secondary and the primary mirror. The secondary baffle for a large two-mirror optical system is designed and analyzed in this paper. According to mission of a telescope  the structure should have high stiffness and high reliability and light weight. Compared with invar  aluminum alloy and titanium alloy  carbon fiber composite is currently the best material in terms of weight-to-strength ratio. It also has advantages of high temperature tolerance and low thermal expansion. So carbon fiber composite is chosen as material to meet requirements of the coaxial telescope. In this paper  optimization method based on finite element analysis (FEA) is used for design the secondary baffle. Minimum weight of the baffle is chosen as an objective function. Thicknesses of former tube and vanes are chosen as variables. Analysis results show that the designed secondary baffle has maximum diameter of 180mm  total length of 120mm and weighs 142g. And its fundamental frequency reaches 651Hz. Therefore the baffle has many advantages  such as ultra-light weight  high stiffness and dimensional stability  etc. The optimization method and the baffle design can be helpful to other coaxial telescopes  such as Cassegrain  Gregorian and their subdivisions. 2012 IEEE.  
A feasibility study of a prototype PET insert device to convert a general-purpose animal PET scanner to higher resolution 期刊论文  OAI收割
JOURNAL OF NUCLEAR MEDICINE, 2008, 卷号: 49, 页码: 79-87
作者:  
Wu, Heyu;  Pa, Debashish;  O'Sullivan, Joseph A.;  Tai, Yuan-Chuan
  |  收藏  |  浏览/下载:15/0  |  提交时间:2018/05/31