中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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浏览/检索结果: 共9条,第1-9条 帮助

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Exploring the Risky Travel Area and Behavior of Car-hailing Service 期刊论文  OAI收割
ACM TRANSACTIONS ON INTELLIGENT SYSTEMS AND TECHNOLOGY, 2022, 卷号: 13, 期号: 1, 页码: 22
作者:  
Niu, Hongting;  Zhu, Hengshu
  |  收藏  |  浏览/下载:26/0  |  提交时间:2023/01/10
Spatial heterogeneity of bacillary dysentery and the impact of temperature in the Beijing-Tianjin-Hebei region of China 期刊论文  OAI收割
INTERNATIONAL JOURNAL OF BIOMETEOROLOGY, 2021, 页码: 9
作者:  
Wang, Li;  Xu, Chengdong;  Xiao, Gexin;  Qiao, Jiajun;  Zhang, Chaozheng
  |  收藏  |  浏览/下载:26/0  |  提交时间:2021/07/09
Spatial heterogeneity of bacillary dysentery and the impact of temperature in the Beijing-Tianjin-Hebei region of China 期刊论文  OAI收割
INTERNATIONAL JOURNAL OF BIOMETEOROLOGY, 2021, 页码: 9
作者:  
Wang, Li;  Xu, Chengdong;  Xiao, Gexin;  Qiao, Jiajun;  Zhang, Chaozheng
  |  收藏  |  浏览/下载:16/0  |  提交时间:2021/07/09
Research on intelligent risk early warning of open-pit blasting site based on deep learning 期刊论文  OAI收割
Energy Sources, Part A: Recovery, Utilization and Environmental Effects, 2021, 页码: 1-18
作者:  
Liu XB(柳小波);  Yang, Hangyuan;  Jing HD(荆洪迪)
  |  收藏  |  浏览/下载:27/0  |  提交时间:2021/05/10
食用蔬菜能吸收和积累微塑料 期刊论文  OAI收割
科学通报, 2019, 卷号: 64, 期号: 9, 页码: 928-934
作者:  
李连祯;  周倩;  尹娜;  涂晨;  骆永明
  |  收藏  |  浏览/下载:142/0  |  提交时间:2020/06/17
微塑料  生菜  聚苯乙烯微球  吸收  积累  健康风险  microplastics  lettuce  polystyrene microbeads  uptake  accumulation  human health risk  Microplastic (MP, 100 nm-5 mm) may present an attributable risk to ecosystem and human health, and its pollution has become a global environmental concern. Despite a wealth of information on the accumulation of MPs in aquatic species, there is no information on the uptake and accumulation of MPs by higher plants. Terrestrial edible plants are directly exposed to MPs when agricultural soil was applied with organic manure, sewage sludge as fertilizer or plastic mulching. In this paper, the uptake of two sizes of polystyrene (PS) microbeads (0.2 and 1.0 mum) and then their distribution and migration in an edible plant lettuce were firstly investigated based on laboratory experiments. We used fluorescent markers to track PS microbeads in plant tissues and found fluorescence to be a sensitive and reliable detection method. Sections from untreated control lettuce showed no autofluorescence. When roots were treated with fluorescently labeled PS microbeads, the microbeads could be identified by its fluorescence. Our main study investigated the uptake of 0.2 mum beads, as few luminescence signals were observed in lettuce roots for 1.0 mum beads in our experiment. We observed that 0.2 mum fluorescent microbeads were extracellularly trapped in the root cap mucilage (which is a highly hydrated polysaccharide) and a dark green tip (which was typical of lettuce roots exposed to label PS beads) was usually visible to the naked eye. Confocal images revealed that the PS luminescence signals were mainly located in the vascular system and on the cell walls of the cortex tissue of the roots, indicated that the beads passed through the intercellular space via the apoplastic transport system. Once inside the central cylinder, the 0.2 mum PS beads were transferred from the roots to the stems and leaves via the vascular system following the transpiration stream. We also observed that the PS beads adhered to one another and self-assembled systematically into grape-like and (chain) string-like clusters in the intercellular space of the root and stem vascular tissue of lettuce plant. In contrast to the root and stem, PS beads were dispersed in the leaf tissue. Here, for the first time we provide evidence of the adherence, uptake, accumulation, and translocation of submicrometer MPs within an edible plant. Our findings highlight the previously underappreciated human exposure pathway to MPs through the consumption of contaminated crops and emphasize the need for new management strategies to control the release of MPs waste products into the terrestrial environment. Ultimately, the potential impacts of low range sized MPs on food safety of crop plants and human health need to be urgently considered.  
Determination of lead content in drilling fueled soil using laser induced spectral analysis and its cross validation using ICP/OES method 期刊论文  OAI收割
TALANTA, 2018, 卷号: 182, 页码: 443-449
作者:  
Rehan, I.;  Gondal, M. A.;  Rehan, K.
  |  收藏  |  浏览/下载:40/0  |  提交时间:2018/11/05
Robust Novelty Detection via Worst Case CVaR Minimization 期刊论文  OAI收割
IEEE TRANSACTIONS ON NEURAL NETWORKS AND LEARNING SYSTEMS, 2015, 卷号: 26, 期号: 9, 页码: 2098-2110
作者:  
Wang, Yongqiao;  Dang, Chuangyin;  Wang, Shouyang
  |  收藏  |  浏览/下载:20/0  |  提交时间:2018/07/30
我国重点城市饮用水源中“两虫”的分布与健康 风险评价 学位论文  OAI收割
博士后, 北京: 中国科学院研究生院, 2011
肖淑敏
收藏  |  浏览/下载:207/0  |  提交时间:2011/09/01
Spatial analysis and hazard assessment on soil total nitrogen in the middle subtropical zone of China 会议论文  OAI收割
Geoinformatics 2006: Geospatial Information Technology, Wuhan, China, October 28, 2006 - October 29,2006
Lu, Peng; Lin, Wenpeng; Niu, Zheng; Su, Yirong; Wu, Jinshui
收藏  |  浏览/下载:21/0  |  提交时间:2014/12/07