中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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CAS IR Grid
机构
沈阳自动化研究所 [3]
数学与系统科学研究院 [1]
烟台海岸带研究所 [1]
采集方式
OAI收割 [5]
内容类型
会议论文 [3]
期刊论文 [2]
发表日期
2020 [1]
2019 [2]
2015 [2]
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Spacecraft Fault Diagnosis Based on Improved A∗ Algorithm
会议论文
OAI收割
Shenyang, China, July 27-29, 2020
作者:
Gao S(高升)
;
Zhang W(张伟)
;
He X(何旭)
;
Zou, Yongming
;
Li W(李伟)
  |  
收藏
  |  
浏览/下载:45/0
  |  
提交时间:2020/10/10
A* algorithm
fault diagnosis
fault search
health management system
A New Life Expectancy Assessment Method for Complex Systems With Multi-Characteristics: Case Study on Power-Shift Steering Transmission Control System
期刊论文
OAI收割
IEEE ACCESS, 2019, 卷号: 7, 页码: 17425-17438
作者:
Yi, Xiao-Jian
;
Chen, Yue-Feng
;
Mu, Hui-Na
;
Shi, Jian
;
Hou, Peng
  |  
收藏
  |  
浏览/下载:58/0
  |  
提交时间:2019/04/02
Reliability assessment
complex systems
GO method
life expectancy
system characteristics
prognostic and health management
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:154/0
  |  
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.
A Prognostics and Health Management Based Method for Refurbishment Decision Making for Electromechanical Systems
会议论文
OAI收割
2015 15th IFAC Symposium on Information Control Problems in Manufacturing — INCOM 2015, Ottawa, Canada, May 11-13, 2015
作者:
Wang K(王锴)
;
Tian, Jing
;
Pecht, Michael
;
Xu AD(徐皑冬)
收藏
  |  
浏览/下载:63/0
  |  
提交时间:2015/12/19
electromechanical system
life extension
prognostics and health management
refurbishment
The Design of the Integration Multifunction Terminal for Health Management Based on Android System
会议论文
OAI收割
2015 Joint International Mechanical, Electronic and Information Technology Conference (JIMET 2015), Chongqing, China, December 18-20, 2015
作者:
Ye D(叶鼎)
;
Shi G(石刚)
;
Liu B(刘博)
收藏
  |  
浏览/下载:27/0
  |  
提交时间:2015/12/19
Health Information Collection Terminal
Android System
Intelligent Medical and Chronic Management