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CAS IR Grid
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长春光学精密机械与物... [3]
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期刊论文 [6]
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Computational fluid dynamics simulations of phase separation in dispersed oil-water pipe flows
期刊论文
OAI收割
CHEMICAL ENGINEERING SCIENCE, 2023, 卷号: 267, 页码: 18
作者:
Chen, Jianhua
;
Anastasiou, Charitos
;
Cheng, Sibo
;
Basha, Nausheen Mehboob
;
Kahouadji, Lyes
  |  
收藏
  |  
浏览/下载:30/0
  |  
提交时间:2023/02/24
Oil -water flow
Droplet coalescence
Separation characteristics
Dense packed layer
Blending
Automatic procedure for selecting flood events and identifying flood characteristics from daily streamflow data
期刊论文
OAI收割
ENVIRONMENTAL MODELLING & SOFTWARE, 2021, 卷号: 145, 页码: 12
作者:
Zhang, Qin
;
Zhang, Liping
;
She, Dunxian
;
Wang, Shuxia
;
Wang, Gangsheng
  |  
收藏
  |  
浏览/下载:57/0
  |  
提交时间:2021/11/26
Peak over threshold (POT)
MATLAB
Flood characteristics
Master recession curve
Baseflow separation
Flood hydrograph
Advances in analytical chemistry using the unique properties of ionic liquids
期刊论文
OAI收割
TRAC-TRENDS IN ANALYTICAL CHEMISTRY, 2012, 卷号: 39, 页码: 218-227
Tan, Zhi-qiang
;
Liu, Jing-fu
;
Pang, Long
收藏
  |  
浏览/下载:32/0
  |  
提交时间:2014/11/04
Chromatographic separation
Dissolution
Electrochemical characteristics
Extraction
Ionic liquid (IL)
Microextraction
Miscibility
Separation
Task-specific extraction
Tunable viscosity
Research on infrared dim-point target detection and tracking under sea-sky-line complex background (EI CONFERENCE)
会议论文
OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Infrared Imaging and Applications, May 24, 2011 - May 24, 2011, Beijing, China
作者:
Dong Y.-X.
;
Zhang H.-B.
;
Li Y.
;
Li Y.
;
Li Y.
收藏
  |  
浏览/下载:108/0
  |  
提交时间:2013/03/25
Target detection and tracking technology in infrared image is an important part of modern military defense system. Infrared dim-point targets detection and recognition under complex background is a difficulty and important strategic value and challenging research topic. The main objects that carrier-borne infrared vigilance system detected are sea-skimming aircrafts and missiles. Due to the characteristics of wide field of view of vigilance system
the target is usually under the sea clutter. Detection and recognition of the target will be taken great difficulties.There are some traditional point target detection algorithms
such as adaptive background prediction detecting method. When background has dispersion-decreasing structure
the traditional target detection algorithms would be more useful. But when the background has large gray gradient
such as sea-sky-line
sea waves etc.The bigger false-alarm rate will be taken in these local area.It could not obtain satisfactory results. Because dim-point target itself does not have obvious geometry or texture feature
in our opinion
from the perspective of mathematics
the detection of dim-point targets in image is about singular function analysis.And from the perspective image processing analysis
the judgment of isolated singularity in the image is key problem. The foregoing points for dim-point targets detection
its essence is a separation of target and background of different singularity characteristics.The image from infrared sensor usually accompanied by different kinds of noise. These external noises could be caused by the complicated background or from the sensor itself. The noise might affect target detection and tracking. Therefore
the purpose of the image preprocessing is to reduce the effects from noise
also to raise the SNR of image
and to increase the contrast of target and background. According to the low sea-skimming infrared flying small target characteristics
the median filter is used to eliminate noise
improve signal-to-noise ratio
then the multi-point multi-storey vertical Sobel algorithm will be used to detect the sea-sky-line
so that we can segment sea and sky in the image. Finally using centroid tracking method to capture and trace target. This method has been successfully used to trace target under the sea-sky complex background. 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).
氢气渗透Nb基合金的设计及特性表征
期刊论文
OAI收割
RARE METAL MATERIALS AND ENGINEERING, 2010, 卷号: 39, 期号: 6, 页码: 5,1045-1049
作者:
Yan Changfeng (闫常峰)
;
Luo Weimin (罗伟民)
收藏
  |  
浏览/下载:32/0
  |  
提交时间:2014/12/31
hydrogen permeable alloy
Nb-based alloy
hydrogen permeability
microstructure
PERMEATION CHARACTERISTICS
MEMBRANES
SEPARATION
氢渗透合金
Nb基合金
氢渗透度
微观组织
Dispersion compensating properties of microstructure fiber (EI CONFERENCE)
会议论文
OAI收割
ICO20: Optical Communication, August 21, 2005 - August 26, 2005, Changshun, China
作者:
Li C.
;
Wang W.
;
Wang W.
;
Li C.
;
Li C.
收藏
  |  
浏览/下载:25/0
  |  
提交时间:2013/03/25
Microstructure fiber is a new kind of optical fiber. An arrangement of air holes running along the full length of the fiber provides the confinement and guidance of light. The light is confined in the silica core along the fiber axis. This fiber has endlessly single mode
special dispersion characteristics and so on. Using a vectorial effective-index numerical method
we investigated the dispersion characteristics of a microstructure fiber with honeycomb cladding structures. The dispersion
dispersion slope
and Kappa parameter can be designed neatly by changing the air hole size and the separation of the holes in fiber cladding. We demonstrated the Microstructure fiber with large absolute value of normal dispersion and negative dispersion slope at the wavelength of 1550nm. Conventional communication non-shifted single-mode fibers and nonzero-dispersion shifted fibers (NZ-DSF) can be compensated efficiently using the microstructure fiber at the wavelength around 1550nm.
Analysis of alignment error in asphere testing using a corrector (EI CONFERENCE)
会议论文
OAI收割
Optical Design and Testing II, November 8, 2004 - November 11, 2004, Beijing, United states
作者:
Xue D.-L.
;
Zhang X.-J.
;
Zheng L.-G.
收藏
  |  
浏览/下载:22/0
  |  
提交时间:2013/03/25
The characteristics and effects of alignment error on test results are analysed in this paper. The mathematical model are established
the least square method is used to determine the misalignment. Procedures are presented that allow for separation of misalignment from misfigure in asphere testing. The misalignment-induced aberrations by corrector and the support of the mirror can be calculated and subtracted from segment interferogram so that only true misfigure remains. The accuracy of the system can reach up to 0.028(=632.8nm).
Photoluminescence of self-assembled InAs/GaAs quantum dots covered by InAlAs and InGaAs combination strain-reducing layer
期刊论文
OAI收割
chinese physics letters, 2003, 卷号: 20, 期号: 11, 页码: 2061-2063
Fang ZD
;
Gong Z
;
Miao ZH
;
Xu XH
;
Ni HQ
;
Niu ZC
收藏
  |  
浏览/下载:73/0
  |  
提交时间:2010/08/12
1.3 MU-M
MOLECULAR-BEAM EPITAXY
TEMPERATURE-DEPENDENCE
LASING CHARACTERISTICS
LASERS
WAVELENGTH
SEPARATION
LINEWIDTH
PROPERTY
GAIN
Numerical Study of U-beam Inertial Separator
期刊论文
OAI收割
JOURNAL OF THERMAL SCIENCE, 2001, 卷号: 10, 期号: 3, 页码: 264268
L.H. Chen
;
J.R. Fan
;
K.F. Cen
收藏
  |  
浏览/下载:12/0
  |  
提交时间:2013/03/12
gas-solid inertial separator
numerical simulation
dynamic characteristics
separation efficiency.