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TorRS two component system regulates expression of TMAO reductase in response to high hydrostatic pressure through a distinctive signal transduction pathway 期刊论文
Frontiers In Microbiology, 2023, 卷号: 14, 页码: 1
作者:  Na Liu;  Ting Jiang;  Wen-Peng Cui;  Xiao-Qing Qi;  Xue-Gong Li
收藏  |  浏览/下载：13/0  |  提交时间：2023/12/18
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.  
Timing analysis of Swift J1658.2-4242's outburst in 2018 with Insight-HXMT, NICER and AstroSat 期刊论文
Journal of High Energy Astrophysics, 2019, 卷号: 24, 页码: 30-40
作者:  HXMT
收藏  |  浏览/下载：45/0  |  提交时间：2022/02/08
Accretion  accretion disks  Black hole physics  X-rays: binaries:  Swift J1658.2-4242  Astrophysics - High Energy Astrophysical Phenomena  Abstract: We present the observational results from a detailed timing analysis of the black hole candidate Swift J1658.2-4242 during its 2018 outburst with the observations of Hard X-ray Modulation Telescope (Insight-HXMT), Neutron Star Interior Composition Explorer (NICER) and AstroSat in 0.1-250 keV. The evolution of intensity, hardness and integrated fractional root mean square (rms) observed by Insight-HXMT and NICER are presented in this paper. Type-C quasi-periodic oscillations (QPOs) observed by NICER (0.8-3.5 Hz) and Insight-HXMT (1-1.6 Hz) are also reported in this work. The features of the QPOs are analyzed with an energy range of 0.5-50 keV. The relations between QPO frequency and other characteristics such as intensity, hardness and QPO rms are carefully studied. The timing and spectral properties indicate that Swift J1658.2-4242 is a black hole binary system. Besides, the rms spectra of the source calculated from the simultaneous observation of Insight-HXMT, NICER and AstroSat support the Lense-Thirring origin of the QPOs. The relation between QPO phase lag and the centroid frequency of Swift J1658.2-4242 reveals a near zero constant when < 4Hz and a soft phase lag at 6.68 Hz. This independence follows the same trend as the high inclination galactic black hole binaries such as MAXI J1659-152.  
Improvement of Electronic Line-shafting Control in Multi-axis Systems 期刊论文
International Journal of Automation and Computing, 2018, 卷号: 15, 期号: 4, 页码: 474-481
作者:  Chang-Fan Zhang;  Yuan-Yuan Xiao1 Jing He;  Min Yan
收藏  |  浏览/下载：6/0  |  提交时间：2021/02/23
Design of a Real-Time ECG Filter for Portable Mobile Medical Systems 期刊论文
2017, 卷号: 5, 页码: 696-704
作者:  Li, Jianqiang;  Deng, Genqiang;  Wei, Wei;  Wang, Huihui;  Ming, Zhong
收藏  |  浏览/下载：6/0  |  提交时间：2019/12/20
RMB Internationalization and Energy Prices: Evidence for Co-integration, Causality and Interaction Relationship 期刊论文
The Open Fuels & Energy Science Journal, 2017, 卷号: 10, 期号: 1, 页码: 36-47
作者:  Cai, Yuning;  Deng, Mi;  Peng, Cheng;  Tang, Yong;  Wen, Fenghua
收藏  |  浏览/下载：7/0  |  提交时间：2019/12/24
Digital Certificates for the Internet of Things 学位论文
: KTH, 2017
作者:  Forsby,Filip
收藏  |  浏览/下载：7/0  |  提交时间：2019/12/24
Crossing the Line to Electronic Medical Records in Subsaharian Africa: An Obstetric and Neonatal Information System with Perinatal Indicators Dashboard 期刊论文
Journal of Health Science Research, 2017, 卷号: Vol.2 No.1, 页码: 14-20
作者:  JcMoreau;  M.Wade;  I.Aidibe;  M.Abdoulaye;  A.Diakhate
收藏  |  浏览/下载：10/0  |  提交时间：2019/12/24
The Hospital Information System Using Two Separate Virtual Servers Connected to the Internet with Strong Security 期刊论文
Advances in Modern Medicine, 2017, 页码: 407-419
作者:  ToshiharuKawamoto
收藏  |  浏览/下载：7/0  |  提交时间：2019/12/24
可持续发展实验区绿地系统可达性比较研究 学位论文
硕士, 北京: 中国科学院研究生院, 2016
作者:  张娜娜
收藏  |  浏览/下载：21/0  |  提交时间：2017/08/07

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