中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
机构
采集方式
内容类型
发表日期
学科主题
筛选

浏览/检索结果: 共6条,第1-6条 帮助

条数/页: 排序方式:
Quantifying the contributions of structural factors on runoff water quality from green roofs and optimizing assembled combinations using Taguchi method 期刊论文  OAI收割
JOURNAL OF HYDROLOGY, 2021, 卷号: 593, 页码: -
作者:  
Liu, Wen;  Engel, Bernard A.;  Chen, Weiping;  Wei, Wei;  Wang, Yu
  |  收藏  |  浏览/下载:12/0  |  提交时间:2021/12/21
Advanced astigmatism-corrected tandem Wadsworth mounting for small-scale spectral broadband imaging spectrometer (EI CONFERENCE) 会议论文  OAI收割
作者:  
Lin G.-Y.
收藏  |  浏览/下载:35/0  |  提交时间:2013/03/25
Tandem gratings of double-dispersion mount make it possible to design an imaging spectrometer for the weak light observation with high spatial resolution  high spectral resolution  and high optical transmission efficiency. The traditional tandem Wadsworth mounting is originally designed to match the coaxial telescope and large-scale imaging spectrometer. When it is used to connect the off-axis telescope such as off-axis parabolic mirror  it presents lower imaging quality than to connect the coaxial telescope. It may also introduce interference among the detector and the optical elements as it is applied to the short focal length and small-scale spectrometer in a close volume by satellite. An advanced tandem Wadsworth mounting has been investigated to deal with the situation. The Wadsworth astigmatism-corrected mounting condition for which is expressed as the distance between the second concave grating and the imaging plane is calculated. Then the optimum arrangement for the first plane grating and the second concave grating  which make the anterior Wadsworth condition fulfilling each wavelength  is analyzed by the geometric and first order differential calculation. These two arrangements comprise the advanced Wadsworth mounting condition. The spectral resolution has also been calculated by these conditions. An example designed by the optimum theory proves that the advanced tandem Wadsworth mounting performs excellently in spectral broadband. 2012 Optical Society of America.  
Design and analysis of power system of micro-electromechanical actuator (EI CONFERENCE) 会议论文  OAI收割
2010 2nd International Conference on Industrial Mechatronics and Automation, ICIMA 2010, May 30, 2010 - May 31, 2010, Wuhan, China
作者:  
Zhang J.;  Zhang J.;  Zhang J.
收藏  |  浏览/下载:23/0  |  提交时间:2013/03/25
In order to apply the electromechanical actuator to tactical mini-missiles  maximum rotational speed of output shafts is greater than 250/s. Test results basically correspond to the requirement of technical indexes. It is proved that this analysis and design method is congruent with the design of micro-electromechanical actuators  this paper researches on the key technology such as load-bearing ability  the system bandwidth can reach 25.3Hz on the condition of no load and 23.4Hz on the condition of load  thus the method is feasible. 2010 IEEE.  rapidity and miniaturization of the micro-electromechanical actuator power system based on the ball screw. First  according to specific technical indexes  the power  electromechanical time constant and the size of the motors are screened originally through theoretical analysis. Finally  based on the characteristics of ball screw transmission  load locus of the micro-electromechanical actuator dynamic system is theoretically analyzed and the optimum speed ratio is determined through parameter optimization. The results of the double closed loop controlled test on the principle prototype show: the system can operate normally with 2.5N.m hinge moment  
PREPARATION OF LOW-MOLECULAR-MASS PEPTIDES BY ENZYME AUTOLYSIS OF Paphia undulata 期刊论文  OAI收割
PREPARATIVE BIOCHEMISTRY & BIOTECHNOLOGY, 2010, 卷号: 40, 期号: 4, 页码: 286-293
作者:  
Chen, X;  Sun, HL;  Zhou, DB;  fschenxin@tom.com
  |  收藏  |  浏览/下载:18/0  |  提交时间:2011/07/02
Vertical-external-cavity surface-emitting lasers operating at different wavelength: Design, numerical simulation, and characteristics (EI CONFERENCE) 会议论文  OAI收割
Optoelectronic Materials and Devices for Optical Communications, November 7, 2005 - November 10, 2005, Shanghai, China
作者:  
Qin L.;  Jiang H.;  Wang L.;  Wang L.;  Wang L.
收藏  |  浏览/下载:19/0  |  提交时间:2013/03/25
Optimum conditions for Al-13 polymer formation in PACl preparation by electrolysis process 期刊论文  OAI收割
CHEMOSPHERE, 2004, 卷号: 55, 期号: 1, 页码: 51-56
作者:  
Qu, JH;  Liu, HJ
收藏  |  浏览/下载:17/0  |  提交时间:2015/11/05