CORC

在结果中检索

CORC

浏览/检索结果: 共16条，第1-10条 帮助

已选(0)清除 条数/页：   排序方式：
Role of marine algal blooms in the release of arsenic at the sediment-seawater interface: Evidence from microcosm experiments 期刊论文
WATER RESEARCH, 2023, 卷号: 244, 页码: 11
作者:  Duan, Liqin;  Song, Jinming;  Zhang, Yuting;  Yuan, Huamao;  Li, Xuegang
收藏  |  浏览/下载：6/0  |  提交时间：2023/11/30
Direct Coulomb explosion of N2O2+ induced by monochromatic extreme ultraviolet photons at 38.5 eV* 期刊论文
CHINESE PHYSICS B, 2020, 卷号: 29, 期号: 6, 页码: 5
作者:  Zhang, Min;  Najjari, B.;  Hai, Bang;  Zhao, Dong-Mei;  Lei, Jian-Ting
收藏  |  浏览/下载：14/0  |  提交时间：2022/01/13
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.  
典型区域全氟烷基酸多介质传输与风险评价 学位论文
北京: 中国科学院大学, 2017
作者:  刘朝阳
收藏  |  浏览/下载：76/0  |  提交时间：2018/06/28
Age-related changes of leaf traits and stoichiometry in an alpine shrub (Rhododendron agglutinatum) along altitudinal gradient (vol 14, pg 106, 2017) 期刊论文
JOURNAL OF MOUNTAIN SCIENCE, 2017, 卷号: 14, 期号: 3, 页码: 610-610
作者:  Liu Guo-hua;  Wang Meng;  Jin Tian-tian;  Li Zong-shan;  Gong Li
收藏  |  浏览/下载：16/0  |  提交时间：2018/07/20
Pollution pathways and release estimation of perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA) in central and eastern China 期刊论文
SCIENCE OF THE TOTAL ENVIRONMENT, 2017, 卷号: 580, 页码: 1247-1256
作者:  Baninla, Yvette;  Liu, Zhaoyang;  Lu, Yonglong;  Wang, Pei;  Wang, Tieyu
收藏  |  浏览/下载：25/0  |  提交时间：2018/07/20
The effect of local delivery of adiponectin from biodegradable microsphere-scaffold composites on new bone formation in adiponectin knockout mice 期刊论文
JOURNAL OF MATERIALS CHEMISTRY B, 2016
Li, Dan; Guo, Yuan; Lu, Hui; Wang, Ren; Hu, Hong-cheng; Lu, Song-he; Li, Xue-fen; Li, Zi-chen; Wu, Yu-wei; Tang, Zhi-hui
收藏  |  浏览/下载：5/0  |  提交时间：2017/12/04
Ozone (O-3) elicits neurotoxicity in spinal cord neurons (SCNs) by inducing ER Ca2+ release and activating the CaMKII/MAPK signaling pathway 期刊论文
Toxicology and Applied Pharmacology, 2014, 卷号: 280, 期号: 3, 页码: 493-501
作者:  Li, Yun;  Lin, Xiaowen;  Zhao, XueJun;  Xie, Juntian;  JunNanWang
收藏  |  浏览/下载：11/0  |  提交时间：2019/12/17
Apoptosis induction and G2/M arrest of 2-methyl-1,3,6-trihydroxy-9,10-anthraquinone from Rubia yunnanensis in human cervical cancer HeLa cells 期刊论文
PHARMAZIE, 2013, 卷号: 68, 期号: 4, 页码: 293-299
作者:  Zeng, Guang-Zhi;  Fan, Jun-Ting;  Xu, Jun-Ju;  Li, Yan;  Tan, Ning-Hua
收藏  |  浏览/下载：26/0  |  提交时间：2015/05/14
2-Methyl-1,3,6-trihydroxy-9,10-anthraquinone (MTA)  one of the major components isolated from the traditional  Chinese medicine Rubia yunnanensis  exhibited inhibitory activity on the proliferation of several  human cancer cell lines. The results from an annexin V-FITC (fluoresein-5-isothiocyanate) apoptosis assay  and DNA content analysis showed that MTA exerted cytotoxicity via apoptosis induction and G2/M cell cycle  arrest in human cervical carcinoma HeLa cells. Further  MTA was found to induce apoptosis of HeLa cells  through the mitochondria-mediated pathway. It caused the translocation of Bax to the mitochondria and  release of cytochrome c into the cytosol  which caused the cleavage of caspase and poly(ADP-ribose)  polymerase and finally triggered the apoptosis. Furthermore  the p53/p21/Cdc2-cyclin B1 signaling was  found related to the G2/M arrest caused by MTA. The over-expression of p21 and down-expression of  cyclin B1 caused by MTA inactivated the Cdc2-cyclin B1 complex of G2/M checkpoint and finally caused  the G2/M arrest in HeLa cells. This study demonstrated that MTA is a potential anti-cancer component of  R. yunnanensis  a folk anti-cancer herb used in Yunnan  China.  
Ecological knowledge reduces religious release of invasive species 期刊论文
ECOSPHERE, 2013, 卷号: 4, 期号: 2
作者:  Liu, Xuan[1];  McGarrity, Monica E.[2];  Bai, Changming[3];  Ke, Zunwei[4];  Li, Yiming[5]
收藏  |  浏览/下载：4/0  |  提交时间：2020/01/02

©版权所有 ©2017 CSpace - Powered by CSpace