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Spatiotemporal Variation and Pollution Assessment of Pb/Zn from Smelting Activities in China 期刊论文 OAI收割
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH, 2020, 卷号: 17, 期号: 6, 页码: 13
作者: Zang, Zhenfeng; Li, Yonghua; Li, Hairong; Guo, Zhaohui; Zhang, Ru

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收藏 | 浏览/下载：14/0 | 提交时间：2021/03/23

spatiotemporal variation Pb Zn smelting environmental release soil heavy metal pollution potential ecological risk assessment

Spatiotemporal Variation and Pollution Assessment of Pb/Zn from Smelting Activities in China 期刊论文 OAI收割
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH, 2020, 卷号: 17, 期号: 6, 页码: 13
作者: Zang, Zhenfeng; Li, Yonghua; Li, Hairong; Guo, Zhaohui; Zhang, Ru

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收藏 | 浏览/下载：23/0 | 提交时间：2021/03/23

spatiotemporal variation Pb Zn smelting environmental release soil heavy metal pollution potential ecological risk assessment

N2O emission from a temperate forest soil during the freeze-thaw period: A mesocosm study 期刊论文 OAI收割
SCIENCE OF THE TOTAL ENVIRONMENT, 2019, 卷号: 648, 页码: 350-357
作者: Peng, Bo; Sun, Jianfei; Liu, Jun; Dai, Weiwei; Sun, Lifei

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收藏 | 浏览/下载：73/0 | 提交时间：2019/06/04

N2O emission Freeze-thaw cycle Physical release Biological process Potential enzyme activities

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

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收藏 | 浏览/下载：151/0 | 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.

Combined Fe/P and Fe/S ratios as a practicable index for estimating the release potential of internal-P in freshwater sediment 期刊论文 OAI收割
Environmental Science & Pollution Research, 2018, 卷号: 25, 期号: 11, 页码: 10740-10751
作者: Jingfu Wang; Jingan Chen; Jianyang Guo; Qingqing Sun; Haiquan Yang

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收藏 | 浏览/下载：80/0 | 提交时间：2019/05/08

Phosphorus fe/p fe/s release Potential dgt sediment

Air-sea interactions during rapid intensification of typhoon Fengshen (2008) 期刊论文 OAI收割
DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS, 2018, 卷号: 140, 页码: 63, 77
作者: Wang, Xin; Wang, Xidong; Chu, Peter C.

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收藏 | 浏览/下载：32/0 | 提交时间：2019/08/27

Rapid intensification Tropical cyclone heat potential Convective burst Latent heat release

Evaluating the chemical stability in drinking water distribution system by corrosivity and precipitation potential 期刊论文 OAI收割
Water Science & Technology: Water Supply, 2017, 期号: 1, 页码: 1-8
作者: Baoyou Shi; Yunjie Wan; Ying Yu; Junnong Gu; Gangliang Wang

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收藏 | 浏览/下载：20/0 | 提交时间：2017/10/10

Calcium Carbonate Precipitation Potential Chemical Stability Drinking Water Distribution System Iron Release Larson Ratio Red Water

Mechanism of pyrophosphate ion release in T7 RNA polymerase revealed by free energy simulations 期刊论文 OAI收割
COMPUTATIONAL AND THEORETICAL CHEMISTRY, 2016, 卷号: 1094, 页码: 127-132
作者: Wu, SG; Jiang, MQ; Liu, L; Wu, SG (reprint author), Sichuan Normal Univ, Coll Chem & Mat Sci, Chengdu 610068, Peoples R China.

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收藏 | 浏览/下载：28/0 | 提交时间：2017/10/13

Molecular Dynamics Simulation T7 Rna Polymerase Ppi Release Potential Of Mean Force

Electrically pulsatile responsive drug delivery platform for treatment of Alzheimer's disease 期刊论文 OAI收割
nano research, 2015, 卷号: 8, 期号: 7, 页码: 2400-2414
作者: Wu,Li; Wang,Jiasi; Gao,Nan; Ren,Jinsong; Zhao,Andong

收藏 | 浏览/下载：58/0 | 提交时间：2016/05/03

A-BETA AGGREGATION NEURAL STEM-CELLS AMYLOID-BETA CONTROLLED-RELEASE POTENTIAL APPLICATION CONDUCTING-POLYMER HYDROGEN-PEROXIDE MESOPOROUS SILICA IN-VITRO CHELATOR

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 OAI收割
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：47/0 | 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.