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浏览/检索结果: 共36条，第1-10条 帮助

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Mapping Eucalyptus plantation in Guangxi, China by using knowledge-based algorithms and PALSAR-2, Sentinel-2, and Landsat images in 2020 期刊论文  OAI收割
INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION, 2023, 卷号: 120, 页码: 14
作者:  Zhang, Chenchen;  Xiao, Xiangming;  Zhao, Liangcheng;  Qin, Yuanwei;  Doughty, Russell
  |  收藏  |  浏览/下载：17/0  |  提交时间：2023/10/09
Rapid early-season maize mapping without crop labels 期刊论文  OAI收割
REMOTE SENSING OF ENVIRONMENT, 2023, 卷号: 290
作者:  You, Nanshan;  Dong, Jinwei;  Li, Jing;  Huang, Jianxi;  Jin, Zhenong
  |  收藏  |  浏览/下载：37/0  |  提交时间：2023/04/06
Selective extraction of rare earth elements from red mud using oxalic and sulfuric acids 期刊论文  OAI收割
Journal of Environmental Chemical Engineering, 2022, 卷号: 10, 期号: 6, 页码: 108650
作者:  Wanyan Li;  Zehai Li;  Ning Wang;  Hannian Gu
  |  收藏  |  浏览/下载：16/0  |  提交时间：2023/03/29
Crystal structure and admirable luminescence properties of novel red emitting BiOCl: Eu3+ phosphors for indoor illumination 期刊论文  OAI收割
CHEMICAL PHYSICS LETTERS, 2020, 卷号: 752, 页码: 1-9
作者:  Qian, Tingting
  |  收藏  |  浏览/下载：30/0  |  提交时间：2021/09/14
Sandstone-Hosted Uranium Deposits as a Possible Source for Critical Elements: The Eureka Mine Case, Castell-Estao, Catalonia 期刊论文  OAI收割
MINERALS, 2020, 卷号: 10, 期号: 1, 页码: 34
作者:  Castillo-Oliver, Montgarri;  Melgarejo, Joan Carles;  Torro, Lisard;  Villanova-de-Benavent, Cristina;  Campeny, Marc
  |  收藏  |  浏览/下载：36/0  |  提交时间：2020/05/18
Sequential Extraction of Valuable Trace Elements from Bayer Process-Derived Waste Red Mud Samples 期刊论文  OAI收割
Journal of Sustainable Metallurgy, 2018, 卷号: 4, 页码: 147–154
作者:  Hannian Gu;  Ning Wang;  Justin S. J. Hargreaves
  |  收藏  |  浏览/下载：22/0  |  提交时间：2020/10/22
Mapping a pollution index for the transboundary Red River Valley, Asia, 2009-2011 期刊论文  iSwitch采集
JOURNAL OF MAPS, 2015, 卷号: 11, 期号: 3, 页码: 396-404
作者:  Xu, Yongming;  Ho, Hung Chak;  Xiong, Wencheng
收藏  |  浏览/下载：55/0  |  提交时间：2019/10/09
Synthesis and Photoluminescence of Tetravalent Cerium-Doped Alkaline-Earth-Metal Tungstate Phosphors by a Co-precipitation Method 期刊论文  OAI收割
Spectroscopy Letters, 2014, 卷号: 48, 期号: 5, 页码: 381-385
W. L.; Tao Feng, C. Y.; Wang, K.
收藏  |  浏览/下载：28/0  |  提交时间：2015/05/08
Major changes in East Asian climate in the mid-Pliocene: Triggered by the uplift of the Tibetan Plateau or global cooling? 期刊论文  OAI收割
J ASIAN EARTH SCI, 2013, 卷号: 69, 期号: 0, 页码: 48—59
Ge, Junyi（葛俊逸）; Dai, Ying; Zhang, Zhongshi; Zhao, Deai; Li, Qin; Zhang, Yan; Yi, Liang; Wu, Haibin; Oldfield, Frank; Guo, Zhengtang
收藏  |  浏览/下载：27/0  |  提交时间：2013/11/27
Synthesis and luminescence properties of Eu3+-doped silicate nanomaterial (EI CONFERENCE) 会议论文  OAI收割
17th International Conference on Dynamical Processes in Excited States of Solids, DPC'10, June 20, 2010 - June 25, 2010, Argonne, IL, United states
作者:  Zhang J.;  Zhang J.;  Zhang J.
收藏  |  浏览/下载：29/0  |  提交时间：2013/03/25
In this paper  we introduce a sol-gel process for preparing Y 2Si2O7: Eu3+ nanocrystals. The rare earth compounds were dispersed in the SiO2 colloids and the monodisperse nano-scale composite materials were prepared. The reactant mass fraction and heat treatment temperatures could affect the structures and emission spectrum properties of as-synthesized samples. The samples emit the strong red light upon excitation under the ultraviolet. The main peaks originate from 5D0-7F2 electric dipole transition of Eu3+. With regard to the samples treated at different temperatures  the emission spectra obtained under 266 nm excitation show different shapes of spectra lines and relative intensities  indicating that the Eu3+ ions have been located in different local environments. 2011 Published by Elsevier B.V.