中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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Comparative study and discussion of diagenetic facies and conductivity characteristics based on experiments 期刊论文  OAI收割
ROYAL SOCIETY OPEN SCIENCE, 2022, 卷号: 9, 期号: 2, 页码: 23
作者:  
Zhou, Xueqing;  Zhang, Zhansong;  Zhang, Chaomo
  |  收藏  |  浏览/下载:6/0  |  提交时间:2022/05/25
Constraining sterile neutrinos by core-collapse supernovae with multiple detectors 期刊论文  OAI收割
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2020, 期号: 10
作者:  
Tang, J;  Wang, TC;  Wu, MR
  |  收藏  |  浏览/下载:6/0  |  提交时间:2023/03/27
Experimental investigation of CO2 flooding in tight oil reservoirs using CT scanning method 会议论文  OAI收割
Jeju, Korea, Republic of, May 10, 2017 - May 13, 2017
作者:  
Yang L(杨柳);  Kang H;  Lu XB(鲁晓兵);  Tan XQ;  Gao J
  |  收藏  |  浏览/下载:24/0  |  提交时间:2018/11/08
A small thickness measurement system based on PSD and FPGA (EI CONFERENCE) 会议论文  OAI收割
3rd International Conference on Measuring Technology and Mechatronics Automation, ICMTMA 2011, January 6, 2011 - January 7, 2011, Shanghai, China
作者:  
Guo J.;  Guo J.;  He X.
收藏  |  浏览/下载:30/0  |  提交时间:2013/03/25
Considering that the requirement of industrial manufacture  An AT89S51 singlechip works as the core processor of the system. By two laser triangulation  a small thickness measurement system based on PSD and FPGA is presented. It takes S3931 PSD of one dimension as position detection device  A FPGA produces logic control signals for the whole system  the small displacement is converted to differential voltages  which is made by Hamamatsu in Japan  and after amplification and A/D transformation  8-bit parallel data is send to singlechip from FPGA by external interrupts  and the final calculation results output to the LCD display module. After digital micro meter calibration  we get the small thickness. Experiments show that the detection accuracy of the system is not less than 10um.  
Study on resonance absorption raman scattering in i2 liquid-core optical fiber (EI CONFERENCE) 会议论文  OAI收割
Nonlinear Optics: Technologies and Applications, November 12, 2007 - November 13, 2007, Beijing, China
作者:  
Fang W.;  Yi W.
收藏  |  浏览/下载:23/0  |  提交时间:2013/03/25
The Raman scattering of I2 liquid-core optical fiber under the condition of resonance absorption in liquid-core optical fiber is studied in this paper. Iodine is dissolved in transparent benzene to make solution of I2 in benzene  and the absorption coefficients of the solution are measured at certain wavelengths. The absorption curve can be divided into non-resonance absorption region  pre-resonance absorption region  strict resonance absorption region  and post-resonance absorption region respectively. Resonance absorption Raman scattering experiments are conducted by a 532 nm frequency-doubled Nd:YVO4 laser  and the wavelength is in the strict resonance absorption region of solution of I2 in benzene. Compared with I2  the absorption of benzene can be neglected. Non-resonance Raman scattering of the solution is performed using a 632.8 nm He-Ne laser  and no spectrum lines of I2 are found. The study demonstrates that there is one spectrum line of I2 in the Raman scattering spectrum in the I 2 liquid-core optical fiber  but this line is not found in the spectrum of the non-resonance and resonance absorption Raman scattering of I2 solution in benzene using absorption cell. The experiments proved that I 2 Raman scattering  is greatly enhanced by using both resonance absorption and liquid-core optical fiber.