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浏览/检索结果: 共29条，第1-10条 帮助

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Quantitative contribution of cryogenic vacuum extraction and radial water transport to xylem-source water deuterium offsets 期刊论文  OAI收割
AGRICULTURAL AND FOREST METEOROLOGY, 2024, 卷号: 345, 页码: 13
作者:  Li, Yue;  Song, Xianfang;  Wang, Lixin;  Sprenger, Matthias;  Ma, Ying
  |  收藏  |  浏览/下载：28/0  |  提交时间：2024/01/22
The vertical distribution and potential sources of aerosols in the Yangtze River Delta region of China during open straw burning 期刊论文  OAI收割
SCIENCE OF THE TOTAL ENVIRONMENT, 2022, 卷号: 849
作者:  Tian, Xin;  Ren, Bo;  Xie, Pinhua;  Xu, Jin;  Li, Ang
  |  收藏  |  浏览/下载：57/0  |  提交时间：2022/12/22
Identifying the Development Potential for Urban Integration Based on Transport Accessibility-The Case for Northeast China 期刊论文  OAI收割
SUSTAINABILITY, 2021, 卷号: 13, 期号: 21, 页码: 13
作者:  Gou, Yichao;  Wang, Chengjin;  Dang, Yi
  |  收藏  |  浏览/下载：22/0  |  提交时间：2022/09/21
Identifying the Development Potential for Urban Integration Based on Transport Accessibility-The Case for Northeast China 期刊论文  OAI收割
SUSTAINABILITY, 2021, 卷号: 13, 期号: 21, 页码: 13
作者:  Gou, Yichao;  Wang, Chengjin;  Dang, Yi
  |  收藏  |  浏览/下载：29/0  |  提交时间：2022/09/21
Use of the PSCF method to analyze the variations of potential sources and transports of NO2, SO2, and HCHO observed by MAX-DOAS in Nanjing, China during 2019 期刊论文  OAI收割
SCIENCE OF THE TOTAL ENVIRONMENT, 2021, 卷号: 782
作者:  Ren, Bo;  Xie, Pinhua;  Xu, Jin;  Li, Ang;  Tian, Xin
  |  收藏  |  浏览/下载：46/0  |  提交时间：2021/08/31
A constrained transport divergence-free finite element method for incompressible MHD equations 期刊论文  OAI收割
JOURNAL OF COMPUTATIONAL PHYSICS, 2021, 卷号: 428, 页码: 22
作者:  Li, Lingxiao;  Zhang, Donghang;  Zheng, Weiying
  |  收藏  |  浏览/下载：46/0  |  提交时间：2021/04/26
Charged porous asymmetric membrane for enhancing salinity gradient energy conversion 期刊论文  OAI收割
NANO ENERGY, 2021, 卷号: 79, 页码: 9
作者:  Hou, Shuhua;  Zhang, Qianru;  Zhang, Zhen;  Kong, Xiangyu;  Lu, Benzhuo
  |  收藏  |  浏览/下载：38/0  |  提交时间：2021/04/26
Multimedia mass balance approach to characterizing the transport potential of antibiotics in soil-plant systems following manure application 期刊论文  OAI收割
JOURNAL OF HAZARDOUS MATERIALS, 2020, 卷号: 393, 页码: 1-11
作者:  Zhao, Fangkai;  Chen, Liding;  Yen, Haw;  Sun, Long;  Li, Shoujuan
  |  收藏  |  浏览/下载：38/0  |  提交时间：2021/08/31
Characteristics, Formation Mechanisms and Potential Transport Pathways of PM2.5 at a Rural Background Site in Chongqing, Southwest China 期刊论文  OAI收割
AEROSOL AND AIR QUALITY RESEARCH, 2019, 卷号: 19, 期号: 9, 页码: 1980-1992
作者:  Peng, Chao;  Tian, Mi;  Chen, Yang;  Wang, Huanbo;  Zhang, Leiming
  |  收藏  |  浏览/下载：74/0  |  提交时间：2019/12/03
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：147/0  |  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.