中国科学院机构知识库网格系统: 检索

Association between serum and urinary environmental metal levels and major depressive disorder: a study based on logistic regression and quantile regression 期刊论文 OAI收割
FRONTIERS IN PUBLIC HEALTH, 2024, 卷号: 12, 页码: 11
作者: Sun, Qixuan; Ding, Haiyang; Lu, Chenxuan; Yan, Lailai; Cao, Bing

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收藏 | 浏览/下载：13/0 | 提交时间：2024/10/14

case-control experiment environmental metal major depressive disorder serum urinary

Species identification and biomass assessment of Gnathanodon speciosus based on environmental DNA technology 期刊论文 OAI收割
ECOLOGICAL INDICATORS, 2024, 卷号: 160, 页码: 9
作者: Zhang, Jing; Chen, Xiaofei; Zhou, Qingjie; Diao, Caoyun; Jia, Hui

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收藏 | 浏览/下载：9/0 | 提交时间：2024/06/04

Environmental DNA Aquarium experiment Biomass assessment Gnathanodon speciosus

3D打印技术及其在小型分析器件设计制作中的应用 学位论文 OAI收割
北京: 中国科学院生态环境研究中心, 2020
作者: 王丁一

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收藏 | 浏览/下载：45/0 | 提交时间：2021/07/08

3d打印个性化定制，环境科学，实验与分析装置，质谱检测 three Dimensional Printing, Customized Fabrication, Environmental Science, Experiment And Analysis Device, Mass Spectrometry Detection

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

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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.

Design of Spatial Oval Plane Mirror and Its Support Structure 会议论文 OAI收割
Nanjing, PEOPLES R CHINA, 2017-10-24
作者: Chai Wenyi; Hu Yongming; Wang Chenjie; Chen Su; Feng Song

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收藏 | 浏览/下载：39/0 | 提交时间：2018/07/05

Spatial Oval Mirror Lightweight Shape Accuracy Flexible Support Environmental Experiment

Potential mobility of inorganic nutrients and its controls at the sediment water interface in the main path of Kuroshio Current off eastern Taiwan 期刊论文 OAI收割
MARINE POLLUTION BULLETIN, 2017, 卷号: 119, 期号: 1, 页码: 270-276
作者: Zhou, Fengxia; Gao, Xuelu; Zhang, Yong; Yuan, Huamao; Song, Jinming

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收藏 | 浏览/下载：30/0 | 提交时间：2017/10/09

Simulation Experiment Sediment-water Interface Nutrient Exchange Flux Environmental Factors

Potential mobility of inorganic nutrients and its controls at the sediment water interface in the main path of Kuroshio Current off eastern Taiwan 期刊论文 OAI收割
MARINE POLLUTION BULLETIN, 2017, 卷号: 119, 期号: 1, 页码: 270-276
作者: Zhou, Fengxia; Gao, Xuelu; Zhang, Yong; Yuan, Huamao; Song, Jinming

收藏 | 浏览/下载：63/0 | 提交时间：2017/09/05

Simulation experiment Sediment-water interface Nutrient exchange flux Environmental factors

Effects of sampling method on foliar delta C-13 of Leymus chinensis at different scales SCI/SSCI论文 OAI收割
2015
作者: Liu Y. J.; Li, Y.; Zhang, L. R.; Xu, X. L.; Niu, H. S.

收藏 | 浏览/下载：156/0 | 提交时间：2015/12/09

Environmental variability field experiment sampling error temperate steppes transect carbon-isotope discrimination water-use efficiency net primary productivity inner-mongolia rainfall gradient biomass allocation natural-abundance patterns plants china

Laser cleaning of neutral attenuator plate based on low power laser diode (EI CONFERENCE) 会议论文 OAI收割
2nd International Conference on Energy, Environment and Sustainable Development, EESD 2012, October 12, 2012 - October 14, 2012, Jilin, China
作者: Chen Y.; Li L.

收藏 | 浏览/下载：30/0 | 提交时间：2013/03/25

Laser cleaning is a non-contact green and environmental cleaning method which can effectively remove particulate contaminations of sizes as small as 0.1 m without damage to the optics. But most laser cleaning devices are large and heavy also expensive due to using large lasers such as CO2 laser YAG Laser etc. In this work a low power LD was tried to clean fingerprint and dust contaminated on the surface of the attenuator glasses plates. In the laser cleaning experiment with low power diode the fingerprint grease can be efficient to be cleaned but there is no evident effect for cleaning inorganic dust. The cleaning different degree of fingerprint contaminations was investigated at the variable laser parameters including laser power and irradiation time. An optical microscope was used to analyze the cleaning effect. The results show that low power LD can effectively remove the fingerprint on the surface of absorptive-type attenuator glass plates. On the premise that the attenuator optics glasses are not damaged the cleaning area increases with the increase of radiation time and laser power. The cleaning area doesn't change much with the variation of laser frequency when the other parameters are the same. (2013) Trans Tech Publications Switzerland.

Gene or environment? Species-specific control of stomatal density and length 期刊论文 OAI收割
ecology and evolution, 2012, 卷号: 2, 期号: 5, 页码: 1065-1070
作者: Zhang, Lirong; Niu, Haishan; Wang, Shiping; Zhu, Xiaoxue; Luo, Caiyun

收藏 | 浏览/下载：26/0 | 提交时间：2013/03/15

Environmental control genetic control reciprocal transplant experiment stomatal density stomatal initiation stomatal length