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Compact UWB FSS reflector for antenna gain enhancement 期刊论文
2019, 卷号: 13, 页码: 1749-1755
作者:  Yuan, Yanning;  Xi, Xiaoli;  Zhao, Yuchen
收藏  |  浏览/下载：19/0  |  提交时间：2019/12/20
食用蔬菜能吸收和积累微塑料 期刊论文
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：63/0  |  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.  
脱氮除磷活性生物载体、其制备方法及其应用 专利
专利号: CN109019877A, 申请日期: 2018-12-18, 公开日期: 2018-12-18
作者:  程浩毅;  王爱杰;  王树森;  朱婷婷
收藏  |  浏览/下载：9/0  |  提交时间：2019/11/27
Improved Land Use and Leaf Area Index Enhances WRF-3DVAR Satellite Radiance Assimilation: A Case Study Focusing on Rainfall Simulation in the Shule River Basin during July 2013 期刊论文
ADVANCES IN ATMOSPHERIC SCIENCES, 2018, 卷号: 35, 期号: 6, 页码: 628-644
作者:  Fu, CS (Fu, Congshen);  Shen, MG (Shen, Miaogen);  Yang, JH (Yang, Junhua);  Ji, ZM (Ji, Zhenming);  Chen, DL (Chen, Deliang)
收藏  |  浏览/下载：42/0  |  提交时间：2019/06/04
Performance study of millimetre-wave MIMO channel in subway tunnel using directional antennas 期刊论文
IET MICROWAVES ANTENNAS & PROPAGATION, 2018, 卷号: 12, 页码: 833-839
作者:  Jiang, Ye[1];  Zheng, Guoxin[2];  Yin, Xiaoyu[3];  Saleem, Asad[4];  Ai, Bo[5]
收藏  |  浏览/下载：2/0  |  提交时间：2019/04/24
A Novel 28 GHz Beam Steering Array for 5G Mobile Device With Metallic Casing Application 期刊论文
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 2018, 卷号: 66, 页码: 462-466
作者:  Yu, Bin[1];  Yang, Kang[2];  Sim, Chow-Yen-Desmond[3];  Yang, Guangli[4]
收藏  |  浏览/下载：23/0  |  提交时间：2019/04/24
Mechanistic insights into the γ-elimination reaction of l-methionine catalyzed by methionine γ-lyase (MGL) 期刊论文
Theoretical Chemistry Accounts, 2017, 卷号: 136, 期号: 9
作者:  Lin B.;  Tian G.;  Liu Y.
收藏  |  浏览/下载：9/0  |  提交时间：2019/12/12
Comparative studies of the catalytic mechanisms of two chorismatases: CH-fkbo and CH-Hyg5 期刊论文
PROTEINS-STRUCTURE FUNCTION AND BIOINFORMATICS, 2017, 卷号: 85, 期号: 6, 页码: 1146-1158
作者:  Dong, Lihua;  Liu, Yongjun
收藏  |  浏览/下载：3/0  |  提交时间：2019/12/12
Validation of Atmospheric Water Vapor Derived from Ship-Borne GPS Measurements in the Chinese Bohai Sea 期刊论文
TERRESTRIAL ATMOSPHERIC AND OCEANIC SCIENCES, 2016, 卷号: 27, 期号: 2, 页码: 213-220
作者:  Fan, Shi-Jie;  Zang, Jian-Fei;  Peng, Xiu-Ying;  Wu, Su-Qin;  Liu, Yan-Xiong
收藏  |  浏览/下载：4/0  |  提交时间：2019/08/19
Validation of Atmospheric Water Vapor Derived from Ship-Borne GPS Measurements in the Chinese Bohai Sea 期刊论文
TERRESTRIAL ATMOSPHERIC AND OCEANIC SCIENCES, 2016, 卷号: 27, 期号: 2, 页码: 213-220
作者:  Fan, Shi-Jie;  Zang, Jian-Fei;  Peng, Xiu-Ying;  Wu, Su-Qin;  Liu, Yan-Xiong
收藏  |  浏览/下载：6/0  |  提交时间：2018/12/07

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