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Consensus-Based Distributed Control with Communication Time Delays for Virtual Synchronous Generators in Isolate Microgrid

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Energy and Power Engineering 2017年第4期9卷 102-111页

作者： Laijun Chen yuyang wang Tianwen Zheng Zhenquan Sun State Key Laboratory of Power System Department of Electrical Engineering Tsinghua University Beijing China Key Laboratory of Photovoltaic Power Generation and Grid-connected Technology (Qinghai Electrical Power Research In-stitute Qinghai Electric Power Corporation Xining China) Shaanxi Regional Electric Power Design and Research Institute Xi’an China

A consensus-based distributed control method of coordinated VSGs with communication time delays in isolate microgrid is proposed. When time delays are considered in communication, there are some effects on frequency restoration and active power output allocation. In the control structure, only local information exchange is needed, while the final frequency can be controlled to the nominal value and the VSGs can automatically share loads according to their rated values. An AC microgrid with three VSGs and some loads is implemented. The proposed control strategy is verified by MATLAB/ Simulink simulation results.

关键词： Virtual Synchronous Generator Time Delays Distributed Control Consensus Algorithm

Heat-inducible SlWRKY3 confers thermotolerance by activating the SlGRXS1 gene cluster in tomato

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Horticultural Plant Journal 2024年第2期10卷 515-531页

作者： Ying wang Wenxian Gai Liangdan Yuan Lele Shang Fangman Li Zhao Gong Pingfei Ge Yaru wang Jinbao Tao Xingyu Zhang Haiqiang Dong yuyang Zhang National Key Laboratory for Germplasm Innovation and Utilization for Fruit and Vegetable Horticultural Crops Huazhong Agricultural UniversityWuhanHubei 430070China Hubei Hongshan Laboratory WuhanHubei 430070China

High temperature stress is one of the major environmental factors that affect the growth and development of plants. Although WRKY transcription factors play a critical role in stress responses, there are few studies on the regulation of heat stress by WRKY transcription factors,especially in tomato. Here, we identified a group I WRKY transcription factor, SlWRKY3, involved in thermotolerance in tomato. First, SlWRKY3 was induced and upregulated under heat stress. Accordingly, overexpression of SlWRKY3 led to an increase, whereas knock-out of SlWRKY3 resulted in decreased tolerance to heat stress. Overexpression of SlWRKY3 accumulated less reactive oxygen species(ROS), whereas knock-out of SlWRKY3 accumulated more ROS under heat stress. This indicated that SlWRKY3 positively regulates heat stress in tomato. In addition,SlWRKY3 activated the expression of a range of abiotic stress-responsive genes involved in ROS scavenging, such as a SlGRXS1 gene *** analysis showed that SlWRKY3 can bind to the promoters of the SlGRXS1 gene cluster and activate their expression. Collectively, these results imply that SlWRKY3 is a positive regulator of thermotolerance through direct binding to the promoters of the SlGRXS1 gene cluster and activating their expression and ROS scavenging.

关键词： Tomato WRKY transcription factor SlWRKY3 Thermotolerance SlGRXS1 Gene cluster Abiotic stress

A comprehensive survey of bat sarbecoviruses across China in relation to the origins of SARS-CoV and SARS-CoV-2

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National Science Review 2023年第6期10卷 117-130页

作者： Zhiqiang Wu Yelin Han yuyang wang Bo Liu Lamei Zhao Junpeng Zhang Haoxiang Su Wenliang Zhao Liguo Liu Shibin Bai Jie Dong Lilian Sun Yafang Zhu Siyu Zhou Yiping Song Hongtao Sui Jian Yang Jianwei wang Shuyi Zhang Zhaohui Qian Qi Jin NHC Key Laboratory of Systems Biology of Pathogens Institute of Pathogen Biology Chinese Academy of Medical Sciences and Peking Union Medical College Key Laboratory of Respiratory Disease Pathogenomics Chinese Academy of Medical Sciences and Peking Union Medical College College of Animal Science and Veterinary Medicine Shenyang Agricultural University

SARS-C oV and SARS-C oV-2 have been thought to originate from *** this study,we screened pharyngeal and anal swabs from 13 064 bats collected between 2016 and 2021 at 703 locations across China for sarbecoviruses,covering almost all known southern hotspots,and found 146 new bat *** analyses of all available sarbecoviruses show that there are three different lineages—L1 as SARS-CoV-related CoVs(SARSr-CoVs),L2 as SARS-CoV-2-related CoVs(SC2r-CoVs) and novel L-R(recombinants of L1 and L2)—present in Rhinolophus pusillus bats,in the mainland of *** the146 sequences,only four are ***,none belong in the L2 lineage,indicating that circulation of SC2r-C oVs in China might be very *** remaining 142 sequences belong in the L1 lineage,of which YN2020B-G shares the highest overall se quence identity with SARS-C oV(95.8 %).The observation suggests endemic circulations of SARSr-CoVs,but not SC2r-CoVs,in bats in *** analysis of the collection sites in this study,together with all published reports,indicates that SC2r-C oVs maybe mainly present in bats of Southeast Asia,including the southern border of Yunnan province,but absent in all other regions within *** contrast,SARSr-CoVs appear to have broader geographic distribution,with the highest genetic diversity and sequence identity to human sarbecoviruses along the southwest border of *** data provide the rationale for further extensive surveys in broader geographical regions within,and beyond,Southeast Asia in order to find the most recent ancestors of human sarbecoviruses.

关键词： SARS-CoV SARS-CoV-2 bats China origin tracing

百色市及周边地区胰腺癌发病相关危险因素分析

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右江民族医学院学报 2024年第1期46卷 18-23页

作者：黄秀权岑兰英王语阳苏拾香甘慧芳徐键黄桂香覃忠帅覃月秋右江民族医学院附属医院消化内科广西百色533000 右江民族医学院研究生学院广西百色533000

目的探讨百色市及周边地区胰腺癌发病可能相关的危险因素。方法回顾性分析2015年1月至2023年6月期间在右江民族医学院附属医院确诊为胰腺癌且病历资料完整的269例患者和同期因腹部不适住院并排除为患有肿瘤疾病的332例患者的临床资料,... 详细信息

目的探讨百色市及周边地区胰腺癌发病可能相关的危险因素。方法回顾性分析2015年1月至2023年6月期间在右江民族医学院附属医院确诊为胰腺癌且病历资料完整的269例患者和同期因腹部不适住院并排除为患有肿瘤疾病的332例患者的临床资料,采用单因素及多因素二元Logistic回归分析性别、年龄、体重指数、吸烟史、饮酒史、高血压病史、糖尿病史、乙型肝炎病毒感染史、幽门螺杆菌感染史、血脂情况、胆系疾病史、慢性胰腺炎病史、家族史及遗传病史等资料,寻找胰腺癌发病的独立危险因素。结果单因素分析显示:吸烟史、饮酒史、高血压病史、糖尿病史、乙型肝炎病毒感染史、幽门螺杆菌感染史、高脂血症、慢性胰腺炎病史及胆系疾病史是胰腺癌发病的危险因素;多因素分析表明:吸烟史(OR=2.972)、高血压病史(OR=5.279)、糖尿病史(OR=35.819)、幽门螺杆菌感染史(OR=24.999)、高脂血症(OR=12.665)、胆系疾病史(OR=16.611)是胰腺癌发病的危险因素。结论本地区胰腺癌发病可能的危险因素有吸烟史、高血压病史、糖尿病史、幽门螺杆菌感染史、高脂血症、胆系疾病史,通过引导有以上疾病的人群积极进行胰腺癌筛查,对本地区胰腺癌的防治工作可以起到积极作用。

关键词：胰腺肿瘤高血压糖尿病危险因素

Reducing the vacancies associated with ferroelectric polarization to promote photocatalytic overall water splitting

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Science China Chemistry 2024年第10期67卷 3258-3264页

作者： Haozhi Qi yuyang Kang Jian-An Liu Lichang Yin Wenyu Zhang Shangyi Ma Jianhang Qiu Lingli Li Weijin Hu Lianzhou wang Gang Liu Institute of Metal Research Chinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China Nanomaterials Centre School of Chemical Engineering and Australian Institute for Bioengineering and NanotechnologyThe University of QueenslandSt LuciaBrisbane QLD 4072Australia

Ferroelectric materials hold great promise in photocatalytic water splitting because their built-in electric field induced by the depolarization field can fulfill the separation of photogenerated ***,a number of intrinsic charged vacancy defects are simultaneously generated to screen the depolarized field for stabilizing the crystal structure,always resulting in severe recombination of photogenerated carriers and thus poor overall water splitting ***,we proposed a strategy to promote the separation and transport of photogenerated carriers of ferroelectric photocatalysts by adjusting the ferroelectric polarization and altering the coordination environment of elements to reduce the defect ***,we prepared a series of Ta-doped PbTiO_(3)with low Pb(V_(Pb))and O(V_(O))vacancy concentrations by reducing the polarization intensity and strengthening the Pb–O *** Ta-doped PbTiO_(3)shows efficient charge separation and greatly enhanced photocatalytic overall water splitting activity with the assistance of *** work highlights the importance of regulating ferroelectric polarization and vacancy defect concentration by the doping strategy in charge separation for photocatalytic water splitting.

关键词： PbTiO_(3) ferroelectric polarization vacancy defect element doping photocatalytic overall water splitting

Delicate chemical structure regulation of nonfullerene acceptor for efficient and large thickness organic solar cells

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Science China Chemistry 2024年第5期67卷 1596-1604页

作者： Zhe Zhang Wanying Feng Yunxin Zhang Shaohui Yuan yuyang Bai Peiran wang Zhaoyang Yao Chenxi Li Tainan Duan Xiangjian Wan Bin Kan Yongsheng Chen State Key Laboratory and Institute of Elemento-Organic Chemistry Frontiers Science Center for New Organic MatterThe Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer MaterialsRenewable Energy Conversion and Storage Center(RECAST)College of ChemistryNankai UniversityTianjin 300071China School of Materials Science and Engineering National Institute for Advanced MaterialsNankai UniversityTianjin 300350China Chongqing Institute of Green and Intelligent Technology Chongqing SchoolUniversity of Chinese Academy of Sciences(UCAS Chongqing)Chinese Academy of SciencesChongqing 400722China

Inspired by the success of CH-series acceptors, a small-molecular acceptor, CH-Tz was reported by adopting a new conjugationextended electron-deficient unit([1,2,5]thiadiazolo[3,4-b]pyrazine) on the central core. Owing to the enhanced inter-/intramolecular interactions, CH-Tz exhibited near-infrared absorption and an effective three-dimensional molecular packing network in its single crystal. When blended with polymer donor PM6, the binary device achieved a high power conversion efficiency(PCE) of 18.54%, with a notable short-circuit current density(J_(sc)) of 27.54 m A cm-2and an excellent fill factor(FF) over 80%,which can be partly ascribed to the balanced charge transport properties in the blend film. After employing D18-Cl as the third component, an enhanced PCE of 18.85% was achieved due to a more obvious fiber network. Impressively, the CH-Tz-based OSC devices show excellent thermal stability and thickness insensitivity. Record-breaking Jscof 28.92 m A cm-2was reached for PM6:D18-Cl:CH-Tz ternary device with a thickness of 560 nm. Besides, CH-Tz shows potential in fabricating multicomponent high-performance organic solar cells, where over 19% efficiency could be realized in the quaternary device. Our work advances the strong influence of electron-deficient central units on molecular photovoltaic properties and guides the design of acceptors for stable and large-thickness organic solar cells.

关键词： organic solar cells non-fullerene acceptor central unit large thickness molecular packing

Cretaceous integrative stratigraphy,biotas,and paleogeographical evolution of the Qinghai-Tibetan Plateau and its surrounding areas

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Science China Earth Sciences 2024年第4期67卷 1229-1289页

作者： Dangpeng XI Guobiao LI Shijun JIANG Xin RAO Tian JIANG Tianyang wang Zuohuan QIN Yasu wang Jianzhong JIA Muhammad KAMRAN Zhongye SHI yuyang WU Panxi wang Lixin SUN Qinggao ZENG Xiaoqiao WAN State Key Laboratory of Biogeology and Environmental Geology China University of GeosciencesBeijing 100083China College of Oceanography Hohai UniversityNanjing 213200China Key Laboratory of Palaeobiology and Petroleum Stratigraphy Nanjing Institute of Geology and PaleontologyChinese Academy of SciencesNanjing 210008China State Key Laboratory of Tibetan Plateau Earth System Environmentand Resources(TPESER)Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China China National Offshore Oil Corporation Limited Beijing 100028China Shanghai Science and Technology Museum Shanghai 200120China Xizang Bureau of Geological and Mineral Exploration and Development Lhasa 850000China Tianjin Geological Survey Center of China Geological Survey Tianjin 300170China

The Cretaceous Period is a vital time interval in deciphering the evolutionary history of the Neo-Tethys Ocean and the convergence of different plates and blocks across the Qinghai-Tibetan Plateau.A detailed stratigraphic framework and paleogeographic patterns are the basis for understanding the evolution of the Neo-Tethys Ocean and the formation of the QinghaiTibetan ***,the Cretaceous stratigraphy,biota,paleogeography,and major geological events in the Qinghai-Tibetan Plateau are analyzed to establish an integrative stratigraphic framework,reconstruct the paleogeography during the Cretaceous Period,and decode the history of the major geological *** Cretaceous rocks of the Qinghai-Tibetan Plateau and its surrounding area are predominantly marine deposits,with a small amount of interbedded marine-terrestrial and terrestrial *** Indus-Yarlung Tsangpo Suture Zone was responsible for the deposition of deep marine sediments dominated by ophiolite suites and radiolarian *** the south,the Tethys Himalayas and Indus Basin received marine sediments of varying depths and lithology;to the north,the Xigaze and Ladakh forearc basins are also filled with marine *** Lhasa Block,Karakorum Block,western Tarim Basin,and West Burma block consist of shallow marine,interbedded marine-terrestrial,and terrestrial *** Qiangtang Basin and other areas are dominated by terrestrial *** Cretaceous strata of the Qinghai-Tibetan Plateau and its surrounding areas are widely distributed and diversified,with abundant foraminifera,calcareous nannofossils,radiolarians,ammonites,bivalves,and *** the basis of integrated lithostratigraphic,biostratigraphic,geochronologic,and chemostratigraphic analyses,we proposed herein a comprehensive stratigraphic framework for the Cretaceous Period of the eastern *** analyzing the Cretaceous biota of different biogeographic zones from eastern Neo-Tethys and its surrounding a

关键词： Qinghai-Tibetan Plateau Tethys Cretaceous Stratigraphy Biota Paleogeography

Soft multifunctional neurological electronic skin through intrinsically stretchable synaptic transistor

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Nano Research 2024年第7期17卷 6550-6559页

作者： Pengcheng Zhu Shuairong Mu Wenhao Huang Zeye Sun yuyang Lin Ke Chen Zhifeng Pan Mohsen Golbon Haghighi Roya Sedghi Junlei wang Yanchao Mao Key Laboratory of Materials Physics of Ministry of Education School of Physics and MicroelectronicsZhengzhou UniversityZhengzhou 450001China School of Mechanical and Power Engineering Zhengzhou UniversityZhengzhou 450001China Department of Chemistry Shahid Beheshti UniversityTehran ***Iran

Neurological electronic skin(E-skin)can process and transmit information in a distributed manner that achieves effective stimuli perception,holding great promise in neuroprosthetics and soft *** E-skin with multifunctional perception abilities can enable robots to precisely interact with the complex surrounding ***,current neurological E-skins that possess tactile,thermal,and visual perception abilities are usually prepared with rigid materials,bringing difficulties in realizing biologically synapse-like ***,we report a soft multifunctional neurological E-skin(SMNE)comprised of a poly(3-hexylthiophene)(P3HT)nanofiber polymer semiconductor-based stretchable synaptic transistor and multiple soft artificial sensory receptors,which is capable of effectively perceiving force,thermal,and light *** stretchable synaptic transistor can convert electrical signals into transient channel currents analogous to the biological excitatory postsynaptic *** it also possesses both short-term and long-term synaptic plasticity that mimics the human memory *** integrating a stretchable triboelectric nanogenerator,a soft thermoelectric device,and an elastic photodetector as artificial receptors,we further developed an SMNE that enables the robot to make precise actions in response to various surrounding *** with traditional neurological E-skin,our SMNE can maintain the softness and adaptability of biological synapses while perceiving multiple stimuli including force,temperature,and *** SMNE could promote the advancement of E-skins for intelligent robot applications.

关键词： electronic skin soft stretchable polymer semiconductor synaptic transistor multifunctional

自适应步长约束的双脚MIMU行人导航系统误差修正方法

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中国惯性技术学报 2021年第5期29卷 561-568页

作者：时伟汪宇阳舒静青中南大学航空航天学院长沙410083

针对GPS信号遮挡严重的室内环境下基于微惯性测量单元(MIMU)的行人导航系统导航定位误差随时间不断累积的问题,研究利用行人运动学特性建立双脚间步长约束的导航误差修正算法。将两个MIMU分别固定在行人双脚上,通过步态特性分析和零速... 详细信息

针对GPS信号遮挡严重的室内环境下基于微惯性测量单元(MIMU)的行人导航系统导航定位误差随时间不断累积的问题,研究利用行人运动学特性建立双脚间步长约束的导航误差修正算法。将两个MIMU分别固定在行人双脚上,通过步态特性分析和零速区间检测,构建了结合单脚零速修正与双脚间步长约束的误差修正模型;通过加速度计输出数据推算步长实现约束的自适应调节,提高行人步态发生变化时的误差修正效果。实际行走实验结果表明,步长变化情况下,利用所提出方法推算步长的误差率在5.8%以下,修正后双脚位置误差相比固定步长约束减小约46.43%,轨迹更加符合实际。

关键词：行人导航微惯性测量单元不等式约束误差修正