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浏览/检索结果: 共12条,第1-10条 帮助

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Translational and Rotational Motion Measurement of a Spherical Particle in Hydraulic Collecting 期刊论文  OAI收割
INTERNATIONAL JOURNAL OF OFFSHORE AND POLAR ENGINEERING, 2023, 卷号: 33, 期号: 3, 页码: 307-315
作者:  
Xiong, Hong;  Chen, Yuxiang;  Cheng, Hui;  Zhu, Hong;  Yu, Chunliang
  |  收藏  |  浏览/下载:34/0  |  提交时间:2024/02/06
Rotational and translational motions induced by the M(s)6. 4 Yunan Yangbi earthquake recorded by co-located FOGs and seismometer 期刊论文  OAI收割
CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION, 2022, 卷号: 65, 期号: 2, 页码: 663-672
作者:  
Cao YuWen;  Zeng XiangFang;  Li ZhengBin;  Wang ShuoFan;  Bao Feng
  |  收藏  |  浏览/下载:25/0  |  提交时间:2022/07/06
Quantification of size effect on protein rotational mobility in cells by F-19 NMR spectroscopy 期刊论文  OAI收割
ANALYTICAL AND BIOANALYTICAL CHEMISTRY, 2018, 卷号: 410, 期号: 3, 页码: 869-874
作者:  
Ye, Yansheng;  Wu, Qiong;  Zheng, Wenwen;  Jiang, Bin;  Pielak, Gary J.
  |  收藏  |  浏览/下载:114/0  |  提交时间:2018/11/05
Frequency analysis of the non-principal-axis rotation of uniaxial space debris in circular orbit subjected to gravity-gradient torque 期刊论文  OAI收割
ADVANCES IN SPACE RESEARCH, 2016, 卷号: 57, 期号: 5, 页码: 1189-1196
作者:  
Lin, Hou-Yuan;  Zhao, Chang-Yin;  Zhang, Ming-Jiang
收藏  |  浏览/下载:23/0  |  提交时间:2016/09/27
Evolution of the rotational motion of space debris acted upon by eddy current torque 期刊论文  OAI收割
ASTROPHYSICS AND SPACE SCIENCE, 2015, 卷号: 357, 期号: 2, 页码: 167
作者:  
Lin, Hou-Yuan;  Zhao, Chang-Yin
收藏  |  浏览/下载:25/0  |  提交时间:2015/12/03
Identifying Multiple Configurations of Complex Molecules on Metal Surfaces 期刊论文  OAI收割
SMALL, 2012, 卷号: 8, 期号: 6, 页码: 796
Liu, Q; Du, SX; Zhang, YY; Jiang, N; Shi, DX; Gao, HJ
收藏  |  浏览/下载:21/0  |  提交时间:2013/09/17
Application of precision harmonic gear drive in focusing mechanism of space camera (EI CONFERENCE) 会议论文  OAI收割
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Smart Structures and Materials in Manufacturing and Testing, April 26, 2010 - April 29, 2010, Dalian, China
作者:  
Zhang X.;  Zhang X.;  Zhang X.
收藏  |  浏览/下载:26/0  |  提交时间:2013/03/25
A kind of precision harmonic gear drive in the focusing mechanism of space camera is studied  which adopt external meshing complex wave transmission mode. Wave generator is combined with an elliptic cam and a flexible bearing around it. Flexspline is a structure of single wave with the same teeth. The output shaft is supported by a single cross-roller bearing. Ball screws connected the output shaft translate the rotational motion to the linear motion  and drive the focusing mirror repeated moving along the linear guide. The output rigid wheel is connected with absolute encoder to detect displacement of focusing movement. It has the characteristics of big transmission ratio  high precision  compact structure  high efficiency and smooth running etc. According to the practical application of this harmonic gear drive in the space camera  the location relationship between the displacement of focusing structure and the focal plane movement is derived  and the system error is analyzed  its accuracy is tested with the open-loop control method. Experimental results show that transmission ratio of the instrument is 1:70  repeated positional accuracy is 2m  which meet the requirements for use. 2010 SPIE.  
Automatic spin coater for concave spherical substrate (EI CONFERENCE) 会议论文  OAI收割
3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies, AOMATT 2007: Design, Manufacturing, and Testing of Micro- and Nano-Optical Devices and Systems, July 8, 2007 - July 12, 2007, Chengdu, China
Fengchao L.; Jingsong G.; Xiaoguo F.; Jingli Z.; Zhijun X.; Jun H.; Fenglin X.; Huiqing W.; Xiaohan L.
收藏  |  浏览/下载:23/0  |  提交时间:2013/03/25
Coating photoresist film with uniform thickness on concave spherical substrate (CSS) is very important for microfabrication of concave spherical optical elements by lithography technique via a laser direct writer  for the uneven photoresist film will result in ununiformity of line width so as to influence the characters of optical elements. For improving the uniformity of photoresist film coating on CSS  an automatic spin coater was designed. The process and the mathematical model of spin coating for CSS were analyzed. Difficulties for realizing the spin coater consist of the control of multi-axis motion precisely and collaboratively  valves on/ff properly and real-timely. A flexible and well-behaved spinning motion system was achieved by tmeans of principal and subordinate CPUs control. The motion program for spin coating could be created and implemented automatically while the pressure and the valves were was watched and controlled in real time. Film coating and laser direct writing experiments on a CSS with aperture equals to 100 mm and radius equals to 370 mm were performed. Photoresist film with uniform thickness on CSS was obtained by selecting proper spin coating parameters such as rotational speed  acceleration and viscosity of the photoresist. After development  the section analysis by the atomic force microscope showed that photoresist film thickness was about 517 nm in the center and about 520 nm in the edge of substrate  the film thickness error was within 1%  and the line width was about 6.0 m with steep sides parallel each other. Experimental results indicate that uniform thickness of thin photoresist film has been coated on CSS by the spin coater  which contributes to quality improvement of laser direct writing lines on CSS.  
Applicability of self-consistent mean-field theory 期刊论文  OAI收割
PHYSICAL REVIEW C, 2005, 卷号: 71, 期号: 2, 页码: -
作者:  
Guo, L;  Sakata, F;  Zhao, EG;  Guo, L , Ibaraki Univ, Dept Math Sci, Mito, Ibaraki 3108512, Japan.
  |  收藏  |  浏览/下载:19/0  |  提交时间:2012/08/30
Excitation of frustrated translation and nonadiabatic adatom hopping induced by inelastic tunneling 期刊论文  OAI收割
PHYSICAL REVIEW LETTERS, 2005, 卷号: 95, 期号: 22
Liu, K; Gao, SW
收藏  |  浏览/下载:22/0  |  提交时间:2013/09/17