机构

• 半导体研究所 [3]
• 南海海洋研究所 [1]
• 长春光学精密机械与物... [1]
• 成都生物研究所 [1]
• 国家天文台 [1]
• 光电技术研究所 [1]
• 更多

采集方式

• OAI收割 [9]

内容类型

• 期刊论文 [7]
• 会议论文 [2]

发表日期

• 2020 [1]
• 2017 [1]
• 2015 [1]
• 2010 [1]
• 2006 [1]
• 2000 [3]
• 更多

学科主题

• 半导体物理 [2]
• Ecology [1]
• 半导体材料 [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 Near and far field propagation properties of hollow Gaussian beam in non-Kolmogorov turbulence 期刊论文  OAI收割 OPTIK, 2020, 卷号: 208, 页码: 7 作者:  Lu, Lu;  Wang, Zhiqiang;  Zhao, Jie   |  收藏  |  浏览/下载：15/0  |  提交时间：2021/12/06 Hollow gaussian beam  Non-Kolmogorov turbulence  Dark size  Beam spreading   Effect of particle-size selectivity on quantitative X-ray dark-field computed tomography using a grating interferometer 期刊论文  OAI收割 RADIATION PHYSICS AND CHEMISTRY, 2017, 卷号: 137, 页码: 260-263 作者:  Bao Y(鲍园);  Bao, Y;  Shao, QG;  Zhu PP(朱佩平);  Wang Y(王研)   |  收藏  |  浏览/下载：30/0  |  提交时间：2019/08/27 Dark-field  Computed tomography  Grating interferometer  Particle-size   Large scale manipulation of the dark spot by phase modulation of azimuthally polarized light 期刊论文  OAI收割 OPTICS COMMUNICATIONS, 2015, 卷号: 349, 页码: 125-131 作者:  Chen, Weiguo;  Wang, Jiong;  Zhao, Zeyu;  Wang, Changtao;  Wang, YanQin 收藏  |  浏览/下载：27/0  |  提交时间：2015/09/21 Binary phase plate  Azimuthally polarized light  Size-tunable dark spot   Ontogenetic shift in the scaling of dark respiration with whole-plant mass in seven shrub species 期刊论文  OAI收割 FUNCTIONAL ECOLOGY, 2010, 卷号: 24, 期号: 3, 页码: 502-512 作者:  Peng, Youhong;  Niklas, Karl J.;  Reich, Peter B.;  Sun, Shucun;  Sun, SC, Chinese Acad Sci, ECORES Lab, Chengdu Inst Biol, Chengdu 610041, Peoples R China   |  收藏  |  浏览/下载：23/0  |  提交时间：2011/07/08 Metabolic Scaling  Dark Respiration  Plant Size  Relative Growth Rate  Nitrogen Content   An improved two-dimensional entropy method for star trail tracing in deep sky (EI CONFERENCE) 会议论文  OAI收割 ICO20: Optical Information Processing, August 21, 2005 - August 26, 2005, Changchun, China 作者:  Wang Y.-J.;  Yao Z.-J. 收藏  |  浏览/下载：32/0  |  提交时间：2013/03/25 The trace of star trail is an important component of deep sky detection. The stars are low contrast targets  and their self-rotation will make their brightness change in cycle. Above all  the trail trace is vulnerable to the block and disturbance of other stars. Traditional one-dimensional maximum entropy thresholding algorithm is vulnerable to the noise  and the calculation of two-dimensional entropy methods is too large and takes too much time. This paper proposes an improved two-dimensional entropy threshold algorithm. We use recursion iteration method to eliminate the redundancy calculation  and reduce the size of two-dimensional histogram based on the deep sky stars characteristic  such as low contrast  fuzziness and the centralized histogram. We also combine our algorithm with the space trail trace model to forecast the star trace. Experiments results show  when the star are blocked or they turn dark  the method still can well extrapolate the star trace. Our method improves the capability of trailing the ebb and small star  and increases the precision of tracing. It is also robust to the noise  so there is a good application foreground for the method.   Exciton states and optical spectra in CdSe nanocrystallite quantum dots 期刊论文  OAI收割 physical review b, 2000, 卷号: 61, 期号: 23, 页码: 15880-15886 作者:  Li JB 收藏  |  浏览/下载：58/0  |  提交时间：2010/08/12 ELECTRONIC-STRUCTURE  SEMICONDUCTOR CLUSTERS  SIZE DEPENDENCE  ENERGY-LEVELS  CRYSTALLITES  ASSIGNMENT  WURTZITE  SPHERES  BANDS  DARK   Characterization of CdSe and CdSe/CdS core/shell nanoclusters synthesized in aqueous solution 期刊论文  OAI收割 physica e, 2000, 卷号: 8, 期号: 2, 页码: 174-178 Liu SM; Guo HQ; Zhang ZH; Li R; Chen W; Wang ZG 收藏  |  浏览/下载：72/0  |  提交时间：2010/08/12 CdSe  CdSe/CdS  nanoclusters  QUANTUM DOTS  SEMICONDUCTOR NANOCRYSTALLITES  SIZE  EXCITON  CLUSTERS  DARK   Characterization of CdSe and CdSe/CdS core/shell nanoclusters synthesized in aqueous solution 会议论文  OAI收割 50th iumrs international conference on advanced materials, beijing, peoples r china, jun 13-18, 1999 作者:  Liu SM 收藏  |  浏览/下载：15/0  |  提交时间：2010/11/15 CdSe  CdSe/CdS  nanoclusters  QUANTUM DOTS  SEMICONDUCTOR NANOCRYSTALLITES  SIZE  EXCITON  CLUSTERS  DARK   Photoperiod mediates the differential physiological responses of smaller Thalassiosira pseudonana and larger Thalassiosira punctigera to temperature changes 期刊论文  OAI收割 JOURNAL OF APPLIED PHYCOLOGY 作者:  Xu, Ge;  Liu, Jihua;  Chen, Bokun;  Li, Gang   |  收藏  |  浏览/下载：47/0  |  提交时间：2020/09/22 Photoperiod  Temperature  Growth  Pigments  Dark respiration  RubisCO activity  Cell size  Diatoms Thalassiosira