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Spatial estimation of the optimum PV tilt angles in China by incorporating ground with satellite data 期刊论文  OAI收割
RENEWABLE ENERGY, 2022, 卷号: 189, 页码: 1249-1258
作者:  
Liu, Yujun;  Yao, Ling;  Jiang, Hou;  Lu, Ning;  Qin, Jun
  |  收藏  |  浏览/下载:20/0  |  提交时间:2022/09/21
Spatial estimation of the optimum PV tilt angles in China by incorporating ground with satellite data 期刊论文  OAI收割
RENEWABLE ENERGY, 2022, 卷号: 189, 页码: 1249-1258
作者:  
Liu, Yujun;  Yao, Ling;  Jiang, Hou;  Lu, Ning;  Qin, Jun
  |  收藏  |  浏览/下载:25/0  |  提交时间:2022/09/21
Optimization of Slope Angle and Its Seismic Stability: A Case Study for the Proposed Open Pit Coalmine in Phulbari, NW Bangladesh 期刊论文  OAI收割
Journal of Mountain Science, 2013, 卷号: 10, 期号: 6, 页码: 976-986
Md. Rafiqul ISLAM; Mohammed Omar FARUQUE
收藏  |  浏览/下载:24/0  |  提交时间:2013/11/26
Fabrication of high-efficiency ultraviolet blazed gratings by use of direct Ar2-CHF3 ion-beam etching through a rectangular photoresist mask (EI CONFERENCE) 会议论文  OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Sensor and Micromachined Optical Device Technologies, May 24, 2011 - May 26, 2011, Beijing, China
Tan X.
收藏  |  浏览/下载:25/0  |  提交时间:2013/03/25
In ultraviolet spectroscopy  groove irregularity and surface roughness of nanometer magnitude can cause a significant loss of diffraction efficiency. Therefore  there is a constant need to improve the diffraction efficiency. A blazed grating can concentrate most of the light intensity into a desired diffraction order  it is important to control the groove shape precisely  so it is the optimum choice among gratings of different kinds of profile. As the operating wavelength of most UV spectral applications is less than 200 nm  especially the blaze angle and the apical angle. We have presented a direct shaping method to fabricate EUV blazed gratings by using an ion-beam mixture of Ar+ and CHF2 +to etch K9 glass with a rectangular photoresist mask. With this method  the required blaze angle is small  we have succeeded in fabricating well-shaped UV blazed gratings with a 1200 line/mm groove density and 8.54 blaze angles and 1200 line/mm groove density and 11.68 blaze angles  and the metrical efficiency is about 81% and 78%. The good performance of the gratings was verified by diffraction efficiency measurements. When one uses the etching model  the conditions on the ion-beam grazing incident angle and the CHF3partial pressure should be noted. Besides  since the etched groove shape depends on the aspect ratio of the photoresist mask ridge  if we wish to fabricate larger gratings with this method  we must improve the uniformity of the photoresist mask before ion-beam etching. 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).  
3R intersection target positioning in real time based on distance (EI CONFERENCE) 会议论文  OAI收割
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
Nengwei W.; Juan C.; Jian C.
收藏  |  浏览/下载:13/0  |  提交时间:2013/03/25
The positioning error based on angle  angle-distance or single station positioning increases with the distance increasing. 3R target positioning based on distance can obtain the high precision measurements in long distance. Here we give the 3R model for the intersection positioning  provide the two necessary conditions for getting the optimum intersection point. The experimental results show that the intersection precision based on angle is over 2m and will degrade greatly with the increasing of distance while the one based on 3R model will improve and the error decrease gradually. That the precision of the distance measurement is about 1m means the 3R model is better than the angle positioning  which can compensate the drawbacks of the angle positioning at short distance. 2010 IEEE.  
A sensitive solid-phase time-resolved fluorescence immunoassay apparatus (EI CONFERENCE) 会议论文  OAI收割
International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging, June 17, 2009 - June 19, 2009, Beijing, China
作者:  
Song K.-F.;  Li J.-L.;  Zhang W.-L.;  Wang Y.-L.
收藏  |  浏览/下载:37/0  |  提交时间:2013/03/25
In the device  a He-Ne laser of flash frequency 1-20 Hz was adopted as exciting light source  and three key technical problems have been solved successfully in order to enhance the detecting sensitivity and measuring stability of the device for time-resolved fluorimmunoassays(TRFIA) [1]. The first one is to design optimum exciting optical system  so that the exciting light beam excite the sample most effectively. The second one is to have a project spectrum filter which can reduce the affection of the background light to the photomultiplier tube and also ensure influence of the stray light and mixed diffusion light to the sample fluorescence to the least  the sample fluorescence through the integrating sphere and come to the grating monochromator  The right wavelength will be chosed through changing the angle of incidence of the grating monochromator. The third one is to simulate the principle of sample averaging of BOXCAR averager. In the device  SCM was used as primary controller and CPLD was used as timing controller. Through the preparation process  signal-to-noise ratio(SNR) will be improved  also adjust delay time  ampling frequency and sampling number arbitrarily. By testing  the sensitivity is 10-12mol/L(substance marked by Eu3+)  examination repeat is &le2.5%  examination linearity is from 10 -8mol/L to 10-12mol/L  correlation coefficient is 99.98%(p&le0.01). The instrument is advanced for ultrasensitive detection of antigen and antibody  and solve the tumor  genetic variation  the virus protein detection. 2009 SPIE.  
About the optimum view zenith angle for estimating sensible heat flux from surface temperature 会议论文  OAI收割
Igarss 2003: Ieee International Geoscience and Remote Sensing Symposium, Vols I - Vii, Proceedings: Learning from Earth's Shapes and Sizes, New York
Xin, XZ; Chen, LF; Liu, QH; Tian, GL; Liu, Q; Xin, JF
收藏  |  浏览/下载:21/0  |  提交时间:2014/12/07