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气体推动式地下流体取样技术的室内验证 期刊论文  OAI收割
高校地质学报, 2023, 卷号: 29, 期号: 1, 页码: 138
作者:  
李霞颖;  刘学浩;  李琦;  肖威;  李小春
  |  收藏  |  浏览/下载:1/0  |  提交时间:2025/06/27
Fatigue behavior of a Ti-based metallic glass: Effect of sampling location in association with free volume 期刊论文  OAI收割
JOURNAL OF ALLOYS AND COMPOUNDS, 2021, 卷号: 861, 页码: 10
作者:  
Wang, X. D.;  Song, S. L.;  Zhu, Z. W.;  Zhang, H. F.;  Ren, X. C.
  |  收藏  |  浏览/下载:20/0  |  提交时间:2021/10/15
Fatigue behavior of a Ti-based metallic glass: Effect of sampling location in association with free volume 期刊论文  OAI收割
JOURNAL OF ALLOYS AND COMPOUNDS, 2021, 卷号: 861, 页码: 10
作者:  
Wang, X. D.;  Song, S. L.;  Zhu, Z. W.
  |  收藏  |  浏览/下载:23/0  |  提交时间:2021/10/15
Atmospheric organophosphate esters in the Western Antarctic Peninsula over 2014-2018: Occurrence, temporal trend and source implication 期刊论文  OAI收割
ENVIRONMENTAL POLLUTION, 2020, 卷号: 267, 页码: 1-8
作者:  
Wang, Chu;  Wang, Pu;  Zhao, Junpeng;  Fu, Min;  Zhang, Lin
  |  收藏  |  浏览/下载:65/0  |  提交时间:2021/09/14
Seasonal trend of ambient PCDD/Fs in Tianjin City, northern China using active sampling strategy 期刊论文  OAI收割
JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA, 2012, 卷号: 24, 期号: 11, 页码: 1966-1971
Ding, Lei; Li, Yingming; Wang, Pu; Li, Xiaomin; Zhao, Zongshan; Zhang, Qinghua; Tuan, Ting; Jiang, Guibin
收藏  |  浏览/下载:19/0  |  提交时间:2014/11/04
天津地区二恶英类污染物的分布研究 学位论文  OAI收割
博士, 北京: 中国科学院研究生院, 2011
作者:  
丁磊
收藏  |  浏览/下载:25/0  |  提交时间:2017/01/04
Design of driving circuit for binocular CCD image system (EI CONFERENCE) 会议论文  OAI收割
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Detector, Imager, Display, and Energy Conversion Technology, April 26, 2010 - April 29, 2010, Dalian, China
作者:  
Zhang X.;  Zhang X.;  Zhang X.
收藏  |  浏览/下载:44/0  |  提交时间:2013/03/25
The paper designs a driving circuit of high sensitive  wide dynamic and high signal-to-noise ratio for binocular CCD imaging system which adopts a Dalsa-made high resolution full-frame 33-mega pixels area CCD FTF5066M. Inner structure and driving timing of the FTF5066M sensor are presented. Field Programmable Gate Array (FPGA) is used as the main device to accomplish the timing design of the circuits and power driver control of the two sensors. By using the Correlated Double Sampling (CDS) technique  the video noise is reduced and the SNR of the system is increased. A 12- bit A/D converter is used to improve the image quality. The output rate of the imaging system designed with integrated chip can reach to 1.3 frames per second through bi-channel. For its good performance  low power consumption and small volume  the driving system can be applied to aeronautics and astronautics field. With a further improvement  a maximum data output rate of 2.7 frames per second can be reached through all the eight channels of the two CCDs. 2010 Copyright SPIE - The International Society for Optical Engineering.  
Research on the affect of differential-images technique to the resolution of infrared spatial camera (EI CONFERENCE) 会议论文  OAI收割
3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, July 8, 2007 - July 12, 2007, Chengdu, China
Jin G.; An Y.; Qi Y.; Hu F.
收藏  |  浏览/下载:20/0  |  提交时间:2013/03/25
The optical system of infrared spatial camera adopts bigger relative aperture and bigger pixel size on focal plane element. These make the system have bulky volume and low resolution. The potential of the optical systems can not be exerted adequately. So  one method for improving resolution of infrared spatial camera based on multi-frame difference-images is introduced in the dissertation. The method uses more than one detectors to acquire several difference images  and then reconstructs a new high-resolution image from these images through the relationship of pixel grey value. The technique of difference-images that uses more than two detectors is researched  and it can improve the resolution 2.5 times in theory. The relationship of pixel grey value between low-resolution difference-images and high-resolution image is found by analyzing the energy of CCD sampling  a general relationship between the enhanced times of the resolution of the detected figure with differential method and the least count of CCD that will be used to detect figure is given. Based on the research of theory  the implementation process of utilizing difference-images technique to improve the resolution of the figure was simulated used Matlab software by taking a personality image as the object  and the software can output the result as an image. The result gotten from the works we have finished proves that the technique is available in high-resolution image reconstruction. The resolution of infrared spatial camera can be improved evidently when holding the size of optical structure or using big size detector by applying for difference image technique. So the technique has a high value in optical remote fields.