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7条,第1-7条 帮助

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Growth, longevity, and climate-growth relationships of Corbicula fluminea (Muller, 1774) in Hongze Lake, China 期刊论文  OAI收割
FRESHWATER SCIENCE, 2017, 卷号: 36, 期号: 3, 页码: 595-608
作者:  
Li, Jin;  Rypel, Andrew L.;  Zhang, Shengyu Y.;  Luo, Yuming M.;  Hou, Gang
  |  收藏  |  浏览/下载:33/0  |  提交时间:2019/08/01
Core and Pore Scale Characterization of Liujiagou Outcrop Sandstone, Ordos basin, China for CO2 Aquifer Storage 会议论文  OAI收割
Kyoto, JAPAN, NOV 18-22, 2012
作者:  
Wang Yan;  Crandall, Dustin;  Bruner, Kathy;  Wei Ning;  Gill, Magdalena
  |  收藏  |  浏览/下载:27/0  |  提交时间:2018/06/05
MULTIFRACTAL ANALYSES OF GRAYSCALE AND BINARY SOIL THIN SECTION IMAGES 期刊论文  iSwitch采集
FRACTALS-COMPLEX GEOMETRY PATTERNS AND SCALING IN NATURE AND SOCIETY, 2011, 卷号: 19, 期号: 3, 页码: 299-309
作者:  
Zhou, H.;  Perfect, E.;  Lu, Y. Z.;  Li, B. G.;  Peng, X. H.
收藏  |  浏览/下载:38/0  |  提交时间:2019/10/10
Transmission measurement of photo-absorption cross section of aluminum in soft X-ray region of 50 to 250 eV 期刊论文  OAI收割
中国物理C, 2008, 期号: 8, 页码: 673-676
作者:  
Chen K(陈凯);  Cui MQ(崔明启);  Zheng L(郑雷)
收藏  |  浏览/下载:12/0  |  提交时间:2015/12/25
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.  
Transmission measurement of photoabsorption cross-section of titanium in the region of 4050-5950 eV 期刊论文  OAI收割
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2007, 卷号: 580, 期号: 1, 页码: #REF!
作者:  
Chen K(陈凯);  Cui MQ(崔明启);  Zheng L(郑雷);  Chen, K;  Cui, M
收藏  |  浏览/下载:22/0  |  提交时间:2016/04/11
Five test methods for porosity of completely decomposed granite in Hong Kong 期刊论文  OAI收割
INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES, 2004, 卷号: 41, 期号: 3, 页码: 393-394
作者:  
Yue, ZQ;  Shang, YJ;  Hu, RL;  Tu, XB
  |  收藏  |  浏览/下载:15/0  |  提交时间:2018/09/26