机构

• 长春光学精密机械与物... [2]
• 成都生物研究所 [1]

采集方式

• OAI收割 [3]

内容类型

• 会议论文 [2]
• 期刊论文 [1]

发表日期

• 2018 [1]
• 2011 [1]
• 2010 [1]

学科主题

筛选

浏览/检索结果: 共3条，第1-3条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序作者升序作者降序 DETERMINATION AND ANALYSIS OF KINETIC PARAMETERS OF HETEROTROPHIC BACTERIA IN MATHEMATICAL SIMULATION 期刊论文  OAI收割 APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH, 2018, 卷号: 16, 期号: 2, 页码: 1507-1518 作者:  Lv, W. L.;  Gou, S. Z.;  Chen, Y. W.;  Sun, Y. F.;  Gao, X. D.   |  收藏  |  浏览/下载：35/0  |  提交时间：2020/12/24 anaerobic-anoxic-oxic  kinetic parameters (YH, uH, bH)  mathematical simulation  OUR curve   Space camera dynamic image quality measurement and evaluation (EI CONFERENCE) 会议论文  OAI收割 3rd International Conference on Measuring Technology and Mechatronics Automation, ICMTMA 2011, January 6, 2011 - January 7, 2011, Shanghai, China 作者:  Zhang X.;  Zhang X.;  Zhang X. 收藏  |  浏览/下载：28/0  |  提交时间：2013/03/25 By using analysis of the infinity image of the space camera  we intend to obtain the curve of the dynamic modulation transfer function. We extract the pixel gray values at the image edge which distribute as a knife-edge function  and make differential calculation and Fourier transformation of it  and then we can obtain the dynamic MTF curve of the optical system. The value of the curve at the Nyquist frequency is the most important parameter that reflects the image quality. We add push-scanning imaging and environmental effects to the static MTF of space camera and compare the MTF value with the dynamic MTF at Nyquist frequency. The comparison result can help us verify the accuracy of the calculating results and the feasibility of our method. (2011) Trans Tech Publications.   Study on medical X-ray coherent scatter imaging and processing based digital flat detector (EI CONFERENCE) 会议论文  OAI收割 3rd International Conference on BioMedical Engineering and Informatics, BMEI 2010, October 16, 2010 - October 18, 2010, Yantai, China 作者:  Li B.;  Zhao J.;  Li B.;  Li B.;  Liu J. 收藏  |  浏览/下载：34/0  |  提交时间：2013/03/25 It is introduced a novel imaging technique for medical diagnostic X-ray coherent scatter in this paper. A set of experimental equipment for X-ray coherent scatter imaging was set up with X-ray digital flat detector and medical diagnostic X-ray source. According to this equipment  the scatter images obtained are made of some circles with the same center. It is vital to calculate the energy template to classify the different samples. It is difficult to separate them using the traditional threshold method due to noise and overlapped shadow. In this paper  the image was transformed a binary image by using K-Means algorithm and Mathematical Morphology Methods. The effective region was extracted from the binary image inside the orthogonal energy projection space  then to calculate the centroid of rings. Consequently the curve of the energy distribution was built. The experiment results show that our method is reasonable and feasible. The technique will have wide foreground of application .Besides the imaging of human bone content  it can be used for various imaging of tissue and organs in biology. 2010 IEEE.