机构

• 地质与地球物理研究所 [5]
• 金属研究所 [1]
• 长春光学精密机械与物... [1]
• 上海天文台 [1]
• 上海应用物理研究所 [1]

采集方式

• OAI收割 [9]

内容类型

• 期刊论文 [8]
• 会议论文 [1]

发表日期

• 2021 [1]
• 2019 [1]
• 2017 [1]
• 2015 [1]
• 2013 [4]
• 2012 [1]
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学科主题

• Chemistry,... [1]
• Materials ... [1]
• Physics, A... [1]
• Physics, C... [1]

筛选

浏览/检索结果: 共9条，第1-9条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Research on the scatter features of the PKiKP/PcP amplitude ratio and the inner core boundary density contrasts beneath Northeast Asia 期刊论文  OAI收割 SCIENCE CHINA-EARTH SCIENCES, 2021, 页码: 12 作者:  Zhang, Haodong;  Ai, Yinshuang;  He, Yumei   |  收藏  |  浏览/下载：34/0  |  提交时间：2021/10/19 Northeast Asia  Inner core boundary  PKiKP  PcP amplitude ratio  Density contrast   Single-image phase retrieval for hard X-ray grating interferometry 期刊论文  OAI收割 JOURNAL OF SYNCHROTRON RADIATION, 2019, 卷号: 26, 期号: -, 页码: 215—219 作者:  Wang, ZL;  Ren, K;  Shi, XM;  Ren, YQ;  Gao, K   |  收藏  |  浏览/下载：21/0  |  提交时间：2019/12/30 MASS-DENSITY IMAGES  CONTRAST TOMOGRAPHY   Study on microstructure of transition zone and its strong contrast of single T700 carbon fibers 期刊论文  OAI收割 APPLIED SURFACE SCIENCE, 2017, 卷号: 406, 页码: 274-276 Guo, Xinshuang; Zhang, Kexiang; Fan, Zhen; Feng, Zhihai; He, LianLong 收藏  |  浏览/下载：34/0  |  提交时间：2017/08/17 Carbon fiber  Interface  Orientation  Density  Strong contrast   Effect of Upper Mantle Density Structure on Moho Geometry 期刊论文  OAI收割 PURE AND APPLIED GEOPHYSICS, 2015, 卷号: 172, 期号: 6, 页码: 1563-1583 作者:  Tenzer, Robert;  Chen, Wenjin;  Jin, Shuanggen 收藏  |  浏览/下载：14/0  |  提交时间：2015/08/05 Crust  density contrast  gravity  upper mantle  Moho interface   Early differentiation of the bulk silicate Earth as recorded by the oldest mantle reservoir 期刊论文  OAI收割 PRECAMBRIAN RESEARCH, 2013, 卷号: 238, 页码: 52-60 作者:  Wang, Xuan-Ce;  Li, Zheng-Xiang;  Li, Xian-Hua   |  收藏  |  浏览/下载：30/0  |  提交时间：2018/09/26 Baffin Bay picrite  Chemical heterogeneity  Ancient mantle reservoir  Early silicate Earth's differentiation  Melt density contrast  Magma ocean   Early differentiation of the bulk silicate Earth as recorded by the oldest mantle reservoir 期刊论文  OAI收割 PRECAMBRIAN RESEARCH, 2013, 卷号: 238, 页码: 52-60 作者:  Wang, Xuan-Ce;  Li, Zheng-Xiang;  Li, Xian-Hua   |  收藏  |  浏览/下载：31/0  |  提交时间：2018/09/26 Baffin Bay picrite  Chemical heterogeneity  Ancient mantle reservoir  Early silicate Earth's differentiation  Melt density contrast  Magma ocean   Early differentiation of the bulk silicate Earth as recorded by the oldest mantle reservoir 期刊论文  OAI收割 PRECAMBRIAN RESEARCH, 2013, 卷号: 238, 页码: 52-60 作者:  Wang, Xuan-Ce;  Li, Zheng-Xiang;  Li, Xian-Hua   |  收藏  |  浏览/下载：35/0  |  提交时间：2018/09/26 Baffin Bay picrite  Chemical heterogeneity  Ancient mantle reservoir  Early silicate Earth's differentiation  Melt density contrast  Magma ocean   Early differentiation of the bulk silicate Earth as recorded by the oldest mantle reservoir 期刊论文  OAI收割 PRECAMBRIAN RESEARCH, 2013, 卷号: 238, 页码: 52-60 作者:  Wang, Xuan-Ce;  Li, Zheng-Xiang;  Li, Xian-Hua   |  收藏  |  浏览/下载：39/0  |  提交时间：2018/09/26 Baffin Bay picrite  Chemical heterogeneity  Ancient mantle reservoir  Early silicate Earth's differentiation  Melt density contrast  Magma ocean   The application of adaptive enhancement algorithm based on gray entropy in mammary gland CR image (EI CONFERENCE) 会议论文  OAI收割 2012 2nd International Conference on Consumer Electronics, Communications and Networks, CECNet 2012, April 21, 2012 - April 23, 2012, Three Gorges, China Zhang M.-H.; Zhang Y.-Y. 收藏  |  浏览/下载：34/0  |  提交时间：2013/03/25 Mammary gland is composed entirely of soft tissue with approximate density  therefore mammary gland CR medicine radiation image presents a low contrast  and slight difference changes may be a manifestation of tumor  so it is necessary to enhance mammary gland CR image to improve its visual quality in order to meet the demands of doctor's clinical diagnosis. However the general enhancement algorithms over enhance the contrast and noise  due to image details lost  aiming at the defects  a mammary gland CR medicine image adaptive enhancement arithmetic based on image gray entropy is put forward. The arithmetic adapts dizzy image to magnify selected spatial frequency response in order to enhance the edge details of mammary gland CR images. It can adjust weighted factor K according to image gray characteristics namely pixel gray entropy. Experiments results demonstrate that mammary gland CR image enhanced by the algorithm has abundant details and high signal-to-noise ratio  moreover  CR image enhanced has good visual effect. So the method is effective and fit for enhancing CR medical radiation image edge details. 2012 IEEE.