中国科学院机构知识库网格系统: 检索

浏览/检索结果: 共4条，第1-4条

帮助

条数/页：排序方式：
	Scallop farming impacts on dissolved organic matter cycling in coastal waters: Regulation of the low molecular weight fraction 期刊论文 OAI收割 MARINE ENVIRONMENTAL RESEARCH, 2024, 卷号: 202, 页码: 14 作者: Wang, Bin; Gao, Xuelu; Liu, Yongliang; Sun, Xiyan; Zhao, Jianmin \| 收藏 \| 浏览/下载：12/0 \| 提交时间：2024/12/06 Coastal hypoxia Marine carbon cycle Bay scallop cultivation Absorption and fluorescence spectroscopy Low molecular weight dissolved organic matter
	Scallop farming impacts on dissolved organic matter cycling in coastal waters: Regulation of the low molecular weight fraction 期刊论文 OAI收割 MARINE ENVIRONMENTAL RESEARCH, 2024, 卷号: 202, 页码: 14 作者: Wang, Bin; Gao, Xuelu; Liu, Yongliang; Sun, Xiyan; Zhao, Jianmin \| 收藏 \| 浏览/下载：8/0 \| 提交时间：2024/12/06 Coastal hypoxia Marine carbon cycle Bay scallop cultivation Absorption and fluorescence spectroscopy Low molecular weight dissolved organic matter
	A facile heating cell for in situ transmittance and fluorescence X-ray absorption spectroscopy investigations 期刊论文 OAI收割 JOURNAL OF SYNCHROTRON RADIATION, 2014, 卷号: 21, 期号: 1, 页码: 165-169 作者: An PF(安鹏飞); Hong CH(洪才浩); Zhang J(张静); An, PF; Hong, CH 收藏 \| 浏览/下载：24/0 \| 提交时间：2016/04/08 heating cell in situ transmittance and fluorescence X-ray absorption spectroscopy
	Optical characterization of bare CdSe and CdSe/CdS core/shell nanocrystals (EI CONFERENCE) 会议论文 OAI收割 ICO20: Biomedical Optics, August 21, 2005 - August 26, 2005, Changchun, China 作者: Liu L.; Yu B. 收藏 \| 浏览/下载：16/0 \| 提交时间：2013/03/25 Thiol-capped CdSe/CdS core/shell nanocrystals (NCs) which show high luminescence quantum yield are synthesized in an aqueous solution. UV-Vis absorption spectroscopy and photoluminescence (PL) spectroscopy are employed to analyze optical characters and stabilities of NCs. Furthermore PL properties are studied in a temperature range between 77K and 300K. The PL peak position of bare CdSe NCs shifts toward shorter wavelengths and the band becomes sharper with decreasing temperature. On the same condition the PL peak position of CdSe/CdS core/shell NCs keeps unconverted nearly with the variation of temperature. Photostability of bare CdSe NCs and CdSe/CdS core/shell NCs are compared under the 325nm laser irradiation. It takes 78 seconds that the PL intensity declines to the half for CdSe NCs but 442 seconds for CdSe/CdS core/shell NCs. The fluorescence decay lifetime increases about six times after overcoating. The results indicate that the CdS shell can improve the low temperature PL stability and photostability of CdSe NCs effectively.