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Chinese Academy of Sciences Institutional Repositories Grid
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CAS IR Grid
机构
长春光学精密机械与物... [5]
地质与地球物理研究所 [2]
海洋研究所 [1]
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OAI收割 [8]
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会议论文 [5]
期刊论文 [3]
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2010 [5]
2008 [1]
2006 [1]
2005 [1]
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Microbiolo... [1]
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Isolation and characterization of a marine magnetotactic spirillum axenic culture QH-2 from an intertidal zone of the China Sea
期刊论文
OAI收割
RESEARCH IN MICROBIOLOGY, 2010, 卷号: 161, 期号: 4, 页码: 276-283
作者:
Zhu, Kailing
;
Pan, Hongmiao
;
Li, Jinhua
;
Yu-Zhang, Kui
;
Zhang, Sheng-Da
  |  
收藏
  |  
浏览/下载:29/0
  |  
提交时间:2018/09/26
Magnetotactic bacteria
Response to light
Pure culture
Magnetosome
Phylogenetic analysis
Isolation and characterization of a marine magnetotactic spirillum axenic culture QH-2 from an intertidal zone of the China Sea
期刊论文
OAI收割
RESEARCH IN MICROBIOLOGY, 2010, 卷号: 161, 期号: 4, 页码: 276-283
作者:
Zhu, Kailing
;
Pan, Hongmiao
;
Li, Jinhua
;
Yu-Zhang, Kui
;
Zhang, Sheng-Da
  |  
收藏
  |  
浏览/下载:23/0
  |  
提交时间:2018/09/26
Magnetotactic bacteria
Response to light
Pure culture
Magnetosome
Phylogenetic analysis
Isolation and characterization of a marine magnetotactic spirillum axenic culture QH-2 from an intertidal zone of the China Sea
期刊论文
OAI收割
RESEARCH IN MICROBIOLOGY, 2010, 卷号: 161, 期号: 4, 页码: 276-283
作者:
Zhu, Kailing
;
Pan, Hongmiao
;
Li, Jinhua
;
Yu-Zhang, Kui
;
Zhang, Sheng-Da
  |  
收藏
  |  
浏览/下载:34/0
  |  
提交时间:2010/12/24
Magnetotactic Bacteria
Response To Light
Pure Culture
Magnetosome
Phylogenetic Analysis
Application of image smoothing algorithm (EI CONFERENCE)
会议论文
OAI收割
2010 3rd International Congress on Image and Signal Processing, CISP 2010, October 16, 2010 - October 18, 2010, Yantai, China
作者:
Zhang X.
;
Zhang X.
;
Zhang X.
收藏
  |  
浏览/下载:24/0
  |  
提交时间:2013/03/25
With the application of CCD image sensor
the display effect of LED display panel is greatly improved. Due to the pixel response non-uniformity of CCD
it usually brings a "center dark
surround light" defect on LED display panel. Based on image smoothing algorithm
a calibration method for this defect is proposed in this paper. After calibration
the display uniformity deviation of LED display panel can be narrowed from 12.9% to 0.73%. Experimental results show that the method overcomes the inherent defect and achieves the desired effect. 2010 IEEE.
Optimal design of strap-down inertial navigation support under random loads (EI CONFERENCE)
会议论文
OAI收割
2010 IEEE International Conference on Information and Automation, ICIA 2010, June 20, 2010 - June 23, 2010, Harbin, Heilongjiang, China
作者:
Li M.
收藏
  |  
浏览/下载:29/0
  |  
提交时间:2013/03/25
In order to realize miniaturization and light weight of the strap-down inertial navigation system
and then to make sure that it works well under random loads
optimal design is applied to the strap-down inertial navigation support with the methods of topology optimization and size optimization. Firstly
based on the installation requirement of devices and connection requirement of the support and the carrier
the initial structure of the support is designed. Topology optimization with FEA software ANSYS is adopted on the initial structure to get the basic one. Then 5 critical sizes are chosen as design variables
and the support structure is optimized by means of size optimization to reach light weight with satisfying the requirement of dynamic stiffness. Finally
random vibration analysis is applied to the initial structure. In the mean time
random vibration test is carried out to qualify the analysis method. After the qualification
a random vibration analysis is applied to the optimized support structure to get the rms of displacement response and acceleration response of the support to validate whether the optimized structure is appropriate. The results indicate that the dynamic stiffness of the optimized support structure satisfies the design requirements
and its weight is lighter 49.38% than that of the initial one. This research can be a reference to the structure design of supports under random loads
and the result has been applied to the development and manufacture of a prototype aerocraft. 2010 IEEE.
UV-VUV spectral irradiance responsivity calibration for space remote sensing spectroradiometer (EI CONFERENCE)
会议论文
OAI收割
Advanced Materials and Devices for Sensing and Imaging III, November 12, 2007 - November 14, 2007, Beijing, China
作者:
Yu H.
收藏
  |  
浏览/下载:29/0
  |  
提交时间:2013/03/25
In order to overcome the irradiance responsivity calibration troubles caused by the weak response of most spectral radiometers in ultraviolet band and poor ratio of signal to noise
and to meet special calibration condition for some remote sensing spectroradiometers in space
a spectral irradiance responsivity calibration unit based on parallel light illumination mode is established
it is composed of a 150W deuterium lamp and a spherical mirror. The calibration unit gets the output standard value of spectral irradiance by irradiance transfer
this way avoids the spectral reflectance measurement difficulty of the spherical mirror. A flight spectral radiometer model used for space remote sense was calibrated in range from 160nm to 300nm
the calibration error of spectral irradiance responsivity is 4.7%. Some factors which contribute to calibration uncertainties are discussed.
Key techniques of laser direct writing of fine lines on the spherical surface (EI CONFERENCE)
会议论文
OAI收割
ICO20: Optical Design and Fabrication, August 21, 2005 - August 26, 2005, Changchun, China
Liang F.
;
Hu J.
收藏
  |  
浏览/下载:21/0
  |  
提交时间:2013/03/25
The main principles of laser direct writing (LDW) system for lines on the spherical surface (SS) are discussed. It is pointed out that line profile is determined by the exposure dose distribution
which lies on the light intensity distribution of focus plane and the scanning speed. To improve the quality of line profile on the SS
several key techniques as follows are introduced. Firstly
the unique system configuration
four axes mutually intersecting at the center of the SS
is adopted
which ensures the shape of the focus be maintained circular during the writing period. Secondly
an automatic focus system (AFS) with the function of automatic focus in a certain range is introduced. Thirdly
to guarantee the linear velocity to accord with the exposure character of the photoresist all the time
an efficient arithmetic that controls motors run at appropriate angular velocity in different latitude is developed. Finally
to achieve a stable and well-behaved system so as to compensate the velocity instability resulting from unavoidable errors of mechanical and electronics factor
a powerful programmable multi-axis controller (PMAC) is utilized as the kernel element of the servocontrol system
and the curves of step response and parabolic response achieved by feedforward and PID loop tuning indicate that the location precision and velocity stability have reached a high level. The experimental results of LDW of lines on the SS work piece with a diameter 30 mm and a radius equal to 100 mm are given. The section analysis of the lines on the photoresist by the atomic force microscope (AFM) after exposure and development is performed. The results show that line width is about 3.0 m
and the steep sides of the lines are parallel to each other.
Research on the nonuniformity correction of linear TDI CCD remote camera (EI CONFERENCE)
会议论文
OAI收割
Advanced Materials and Devices for Sensing and Imaging II, November 8, 2004 - November 10, 2004, Beijing, China
Ya-xia L.
;
Zhi-hang H.
收藏
  |  
浏览/下载:24/0
  |  
提交时间:2013/03/25
Many applications
such as industrial inspection and overhead reconnaissance benefit from line scanning architectures where time delay integration (TDI) significantly improves sensitivity[5]. Images with linear response have become the backbone of the imaging industry. But each pixel of the TDI CCD has unique light sensitivity characteristics. Because these characteristics and the lens of the optical system affect camera's linearization and its performance
they must be removed through calibration. The process by which a CCD image is calibrated is known as nonuniformity correction. This paper discusses several methods of nonuniformity correction[2]. The first is one-point correction technique
which requires only one calibration point. This approach is to shift each curve toward the nominal curve by subtracting the offset from or adding the offset to the average. The second is two-point correction technique
which requires two calibration points. Each point is rotated and aligned so that all the detectors have the same response under the same radiance. The third is multipoint correction. It is recommended that more calibration points be implemented at appropriate regions of the response curve. Depend on the linear photoelectric response of the TDI CCD
we use two-point calibration and the standard deviations for the images are given before and after the correction.