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浏览/检索结果: 共19条,第1-10条 帮助

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Remote sensing monitoring of total suspended solids concentration in Jiaozhou Bay based on multi-source data 期刊论文  OAI收割
ECOLOGICAL INDICATORS, 2023, 卷号: 154, 页码: 12
作者:  
Zhang, Xiang;  Huang, Jue;  Chen, Junjie;  Zhao, Yongfang
  |  收藏  |  浏览/下载:26/0  |  提交时间:2023/12/13
A long-term investigation of the variation in leaf wax n-alkanes responding to climate on Dongling Mountain, north China 期刊论文  OAI收割
QUATERNARY INTERNATIONAL, 2021, 卷号: 592, 页码: 67-79
作者:  
Shi, Minrui;  Han, Jiamao;  Wang, Guoan;  Wang, Jia;  Han, Yaowen
  |  收藏  |  浏览/下载:140/0  |  提交时间:2021/10/25
Comprehensive assessment of heavy metal pollution and ecological risk in lake sediment by combining total concentration and chemical partitioning 期刊论文  OAI收割
ENVIRONMENTAL POLLUTION, 2021, 卷号: 269, 页码: 11
作者:  
Yu, Zhenzhen;  Liu, Enfeng;  Lin, Qi;  Zhang, Enlou;  Yang, Fen
  |  收藏  |  浏览/下载:146/0  |  提交时间:2021/03/15
Comprehensive assessment of heavy metal pollution and ecological risk in lake sediment by combining total concentration and chemical partitioning 期刊论文  OAI收割
ENVIRONMENTAL POLLUTION, 2021, 卷号: 269, 页码: 11
作者:  
Yu, Zhenzhen;  Liu, Enfeng;  Lin, Qi;  Zhang, Enlou;  Yang, Fen
  |  收藏  |  浏览/下载:26/0  |  提交时间:2021/03/15
The Effects of Nitrogen Addition on the Uptake and Allocation of Macro- and Micronutrients in Bothriochloa ischaemum on Loess Plateau in China 期刊论文  OAI收割
FRONTIERS IN PLANT SCIENCE, 2017, 卷号: 8, 期号: 01476, 页码: 1-12
作者:  
Liang, Chutao;  Xue, S (reprint author), Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Peoples R China.;  Liu, Guobin;  Xue, Sha;  Zhang, Jiaoyang
  |  收藏  |  浏览/下载:22/0  |  提交时间:2018/04/12
Spatial and seasonal distributions of soil sulfur in two marsh wetlands with different flooding frequencies of the Yellow River Delta, China SCI/SSCI论文  OAI收割
2016
作者:  
Lu Q. Q.;  Bai, J. H.;  Fang, H. J.;  Wang, J. J.;  Zhao, Q. Q.
  |  收藏  |  浏览/下载:21/0  |  提交时间:2017/11/09
Remote sensing assessment of sediment variation in the Pearl River Estuary induced by Typhoon Vicente 期刊论文  OAI收割
AQUATIC ECOSYSTEM HEALTH & MANAGEMENT, 2014, 卷号: 17, 期号: 3, 页码: 271-279
Ye, HB; Chen, CQ; Tang, SL; Tian, LQ; Sun, ZH; Yang, CY; Liu, FF
收藏  |  浏览/下载:29/0  |  提交时间:2014/12/11
松嫩平原苏打盐渍土钠吸附比的间接推算/Estimating sodium adsorption ratio(SAR)of saline-sodic soils in songnen plain,northeast China[J] 期刊论文  OAI收割
干旱地区农业研究, 2013, 卷号: 6, 页码: 198-202
作者:  
迟春明;  王志春;  CHI Chun-ming;  WANG Zhi-chun;  塔里木大学 植物科学学院,新疆 阿拉尔,843300
  |  收藏  |  浏览/下载:39/0  |  提交时间:2017/12/29
Influence of sensitizer concentration on the upconversion luminescence of NaYF4: Yb3+, Er3+ nanoparticles (EI CONFERENCE) 会议论文  OAI收割
2012 2nd International Conference on Machinery, Materials Science and Engineering Applications, MMSE 2012, June 16, 2012 - June 17, 2012, Wuhan, China
作者:  
Zhao J.;  Zhao Y.;  Zhao Y.;  Zhao Y.
收藏  |  浏览/下载:24/0  |  提交时间:2013/03/25
A series of NaYF4: Yb3+  Er3+ nanoparticles with different doping concentration were successfully prepared by the combination of coprecipitation and hydrothermal methods using sodium citrate as chelator. Upconversion luminescence can be observed in all of the samples at room temperature. Fixed the Er3+ concentration with 1 mol% unchanged  the effect of the Yb3+ concentration on the upconversion luminescence of NaYF4: Yb3+  Er3+ samples were studied when the doped Yb3+ concentrations were 0 mol%  1 mol%  2 mol%  5 mol%  10 mol% and 20 mol%  respectively. As increasing the Yb 3+ concentration  the total intensity of the upconversion luminescence of the samples is increasing while the ratio of red to green emission increases firstly and then decreases. The maximum ratio value is 22.1 when the Yb3+ concentration is 10 mol%. It is found that the cross relaxation and cooperative sensitization effect are the reasons for the phenomenon above. (2012) Trans Tech Publications.  
Spatial distribution of gut juice extractable Cu, Pb and Zn in sediments from the Pearl River Estuary, Southern China 期刊论文  OAI收割
MARINE ENVIRONMENTAL RESEARCH, 2012, 卷号: 77, 页码: 112-119
Wang, F; Wang, WX; Huang, XP
收藏  |  浏览/下载:24/0  |  提交时间:2013/08/28