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Multiplex network reconstruction for the coupled spatial diffusion of infodemic and pandemic of COVID-19

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International Journal of Digital Earth 2021年第4期14卷 401-423页

作者： Xiaoqi Zhang Zi-Ke Zhang Wenbo Wang Donglin Hou Jiajing Xu Xinyue Ye shengwen li Dong Furen Economic and Social Development School Wuhan UniversityWuhanPeople’s Republic of China Institute of Economics Chinese Academy of Social ScienceBeijingPeople’s Republic of China College of Media and International Culture Zhejiang UniversityHangzhouPeople’s Republic of China Alibaba Research Center for Complexity Sciences Hangzhou Normal UniversityHangzhouPeople’s Republic of China New Jersey Institute of Technology University HeightsNewarkNJUSA Texas A&M University College StationTXUSA School of Geography and Information Engineering China University of GeosciencesWuhanPeople’s Republic of China

The pandemic of COVID-19 witnessed a massive infodemic with the public being bombarded with vast quantities of *** spreading of neutral and highly accurate reports can guide the public to self-protect and reduce the ***-and dis-information would intrigue panic and high exposure risk to *** the infodemic has attracted attentions from the academia,it is still not known to what degree and in which direction the information flows contribute to the COVID-19 *** fill the gap,we apply network reconstruction techniques to rebuild the hidden multiplex network of information and COVID-19 spreading by which we aim at quantifying the interaction between the propagation of information and the spatial outbreak of COVID-19,and delineate between the positive and negative impact of information on the *** differentiating the types of media that participated in the information process,we find that in the early stage of COVID-19 pandemic,infodemic does play a critical role to amplify the risk of virus outbreak in China and the risk is even larger for those highly developed *** to the old-fashion media,the new mobile platforms impose a greater risk to reinforce the positive feedback between infodemic and COVID-19 pandemic.

关键词： Infodemic COVID-19 multiplex network spatial social network

Heterogeneity induced strain localization in block-in-matrix-soils subjected to uniaxial loading using real-time CT scanning

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Journal of Rock Mechanics and Geotechnical Engineering 2023年第8期15卷 1951-1959页

作者： Yanfang Wu Xiao li Luqing Zhang shengwen Qi Jian Zhou Jianming He Zhaobin Zhang Xiukuo Sun Key Laboratory of Shale Gas and Geoengineering Institute of Geology and GeophysicsChinese Academy of SciencesBeijing100029China University of Chinese Academy of Sciences Beijing100049China Innovation Academy for Earth Science CASBeijing100029China Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education Beijing University of TechnologyBeijing100124China

Block-in-matrix-soils(bimsoils)are geological mixtures that have distinct structures consisting of relatively strong rock blocks and weak matrix *** is still a challenge to evaluate the mechanical behaviors of bimsoils because of the heterogeneity,chaotic structure,and lithological *** a result,only very limited laboratory studies have been reported on the evolution of their internal *** this study,the deformation evolution of bimsoils under uniaxial loading is investigated using real-time X-ray computed tomography(CT)and image correlation algorithm(with a rock block percentage(RBP)of 40%).Three parameters,*** coefficient(K),correlation coefficient(CC),and standard deviation(STD)of displacement fields,are proposed to quantify the heterogeneity of the motion of the rock blocks and the progressive deformation of the *** results show that the rock blocks in bimsoils are prone to forming clusters with increasing loading,and the sliding surface goes around only one side of a *** on the movement of the rock blocks recorded by STD and CC,the progressive deformation of the bimsoils is quantitatively divided into three stages:initialization of the rotation of rock blocks,formation of rock block clusters,and formation of a shear band by rock blocks with significant ***,the experimental results demonstrate that the meso-motion of rock blocks controls the macroscopic mechanical properties of the samples.

关键词： Image correlation algorithm Damage processing Real-time computed tomography(CT) imaging Rock block motion Uniaxial compression

基于边缘计算的视频识别技术在柴油车尾气检测中的应用研究

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黑龙江环境通报 2024年第8期37卷 148-150页

作者：兰云飞孙学君李盛文莫周聪深圳市计量质量检测研究院广东深圳518055 深圳火眼智能有限公司广东深圳518000

随着计算机技术的快速发展,AI人工智能技术在大气污染防治领域也得到了大规模的应用,推动了环境检测技术的发展。近年来,中国成为全球最大的机动车生产和消费国家,随之而来的机动车尾气加重了大气环境污染,并威胁了人体健康。将边缘计... 详细信息

随着计算机技术的快速发展,AI人工智能技术在大气污染防治领域也得到了大规模的应用,推动了环境检测技术的发展。近年来,中国成为全球最大的机动车生产和消费国家,随之而来的机动车尾气加重了大气环境污染,并威胁了人体健康。将边缘计算等技术应用于柴油车尾气检测有别于传统的烟度计、遥感等检测方法,既减少了人为因素的影响,又提高了检测效率,为机动车污染防治提供了技术支撑。

关键词：边缘计算林格曼黑度柴油车尾气检测

基于CIM-建筑三维热红外模型库的高热损失建筑感知方法

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建筑节能（中英文） 2024年第4期52卷 63-69页

作者：李剑桥段盛文郑海超赵立华山东电力工程咨询院有限公司济南250014 山东建筑大学建筑城规学院济南250101 华南理工大学亚热带建筑科学国家重点实验室广州510640

我国北方建筑采暖能耗在全国建筑运行总能耗中占比较大,在城市更新大背景下,既有建筑的节能改造势在必行,是实现“双碳”目标的关键环节。不同建筑的能耗和室内环境存在显著的差异,使用传统的围护结构热工性能检测方法很难对一定区域内... 详细信息

我国北方建筑采暖能耗在全国建筑运行总能耗中占比较大,在城市更新大背景下,既有建筑的节能改造势在必行,是实现“双碳”目标的关键环节。不同建筑的能耗和室内环境存在显著的差异,使用传统的围护结构热工性能检测方法很难对一定区域内的既有建筑群开展热工性能诊治工作,大规模开展既有建筑节能改造工作时,缺乏科学和量化的筛查方法以确定不同建筑进行节能改造的优先级及节能改造潜力。借助无人机红外热像技术,研究城市信息模型(CIM)-建筑三维热红外模型库的搭建方法,并基于此提出采暖建筑高热损失的快速筛查方法,为既有建筑节能改造项目的确定提供理论依据,有利于实现对既有采暖建筑运行热损失的精细化和动态化管理。

关键词：城市信息模型无人机热红外三维重建三维热红外模型

Effects of long-term fast charging on a layered cathode for lithium-ion batteries

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Journal of Energy Chemistry 2022年第4期31卷 604-612页

作者： Jingwei Hu Fengsong Fan Qian Zhang shengwen Zhong Quanxin Ma Jiangxi Key Laboratory of Power Battery and Materials Faculty of Materials Metallurgy and ChemistryJiangxi University of Science and TechnologyGanzhou 341000JiangxiChina

Fast charging, which aims to shorten recharge times to 10–15 min, is crucial for electric vehicles(EVs),but battery capacity usually decays rapidly if batteries are charged under such severe *** the failure mechanism is a prerequisite to improving the charging performance of lithium(li)-ion batteries. Previous studies have focused less on cathode materials while also mostly focusing on their early changes. Thus, the cumulative effect of long-term fast charging on cathode materials has not been fully studied. Here, we study the changes in a layered cathode material during 1000 cycles of 6 C charging based on 1.6 Ah liCoO_(2)/graphite pouch cells. Postmortem analysis reveals that the surface structure, charge transfer resistance and li-ion diffusion coefficient of the cathode degenerate during repeated fast charging, causing a large increase in polarization. This polarization-induced poor utilization of the li inventory is an important reason for the rapid capacity fading of batteries. These findings deepen the understanding of the aging mechanism for cells undergoing fast charging and can be used as benchmarks for the future development of high-capacity, fast-charging layered cathode materials.

关键词： Fast charging Layered cathode Failure mechanism lithium-ion batteries Capacity fading

Realizing the highly reversible Zn^(2+)and Na^(+) dual ions storage in high-crystallinity nickel hexacyanoferrate microcubes for aqueous zinc-ion batteries

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Journal of Materials Science & Technology 2023年第33期164卷 102-110页

作者： Kexuan Wang Zhu Xu Heng li Huibo Wang Mingzheng Ge Jilei liu shengwen li Zekun Hu Mengyu Zhu Yanyan Zhang Yuxin Tang Shi Chen Institute of Applied Physics and Materials Engineering University of MacaoMacao SAR 999078China State Key Laboratory of High-Performance Ceramics and Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050China College of Materials Science and Engineering Hunan Joint International Laboratory of Advanced Materials and Technology of Clean EnergyHunan Province Key Laboratory for Advanced Carbon Materials and Applied TechnologyHunan UniversityChangsha 410082China College of Chemical Engineering Fuzhou UniversityFuzhou 350116China

Prussian blue analogues(PBAs)with the 3D open framework are regarded as promising cathode candidates for aqueous Zinc ion batteries(ZIBs).Among various PBAs,nickel hexacyanoferrate(NiHCF)has attracted considerable attention because of its high operating voltage and economic ***,the cyclability of NiHCF is unsatisfactory due to poor structural stability during Zn^(2+) ions insertion/***,the ion storage mechanism of NiHCF in aqueous electrolytes has not been fully revealed ***,high-crystallinity NiHCF(HC-NiHCF)microcubes with improved structural stability and larger crystal plane spacing are *** the first time,highly reversible Zn2+ions and Na+ions co-insertion/extraction are achieved for the HC-NiHCF microcubes in mixed aqueous electrolyte,as evidenced by various observations including two separated discharge plateaus and sequential changes of Na 1s and Zn 2p signals in ex-situ X-ray photoelectron spectroscopy(XPS).As a result,a high specific capacity of 73.9 mAh g^(−1) is obtained for the HC-NiHCF microcubes at 0.1 A g−1,combined with enhanced cycle stability(75%vs.16.4%)over 1000 cycles at 2 A g^(−1).The reversible Zn^(2+) ions and Na+ions co-insertion in HC-NiHCF microcubes reveals a new ion storage mechanism of Ni-based PBAs in aqueous electrolytes.

关键词： Aqueous zinc-ion batteries Prussian blue analogues Ion storage mechanism Dual ions storage High crystallinity

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老年鹦鹉热衣原体肺炎患者的临床特征分析

热带医学杂志 2024年第3期24卷 374-377,382页

作者：李友堂陈盛文赖燕琴梁荣章马志益福建医科大学附属龙岩第一医院呼吸与危重症医学科福建龙岩364000 福建医科大学附属龙岩第一医院放射科福建龙岩364000

目的探讨老年鹦鹉热衣原体肺炎患者的临床特点、影像学、实验室检查及治疗策略。方法回顾性分析2020年1月-2021年10月福建医科大学附属龙岩第一医院采用宏基因组二代测序(mNGS)技术诊断的14例老年鹦鹉热衣原体肺炎患者的诊治过程,记录... 详细信息

目的探讨老年鹦鹉热衣原体肺炎患者的临床特点、影像学、实验室检查及治疗策略。方法回顾性分析2020年1月-2021年10月福建医科大学附属龙岩第一医院采用宏基因组二代测序(mNGS)技术诊断的14例老年鹦鹉热衣原体肺炎患者的诊治过程,记录患者临床表现、实验室检查、影像学表现和治疗及预后情况。结果14例患者平均年龄(68.9±5.9)岁,7例有明确禽类接触史;临床主要表现包括发热(100.0%,14/14)、乏力(71.4%,10/14)、Ⅰ型呼吸衰竭(50.0%,7/14)。实验室检查白细胞(WBC)有6例高于9.95×10^(9)/L,中性粒细胞比例(NR)多数增高,13例NR高于75%。所有病例均表现为C反应蛋白(CRP)明显增高。最常见的影像改变是实变,表现为大叶性肺炎,下叶及单肺叶大叶性肺炎常见(57.1%,8/14),常伴胸腔积液(71.4%,10/14)。治疗过程中,用药方案主要为单用莫西沙星、多西环素联合莫西沙星或者多西环素联合其他用药。最终出现休克2例,给予呼吸支持治疗2例,仅有1例死亡,其他均好转。结论老年鹦鹉热衣原体肺炎较易出现低氧血症,甚至呼吸衰竭,经恰当的治疗,总体预后良好,能取得明显的效果。

关键词：老年鹦鹉热衣原体社区获得性肺炎宏基因组二代测序

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涡轮空气马达单独螺旋桨试验系统设计与分析

气动研究与试验

气动研究与试验 2024年第3期2卷 45-51页

作者：曲明徐传宝闫永昌张连河刘景飞李盛文中国航空工业空气动力研究院低速高雷诺数航空科技重点实验室黑龙江哈尔滨150001

为在FL-10风洞准确获得螺旋桨缩比模型拉力系数与试验风速、螺旋桨转速、桨叶角及螺旋桨效率的对应关系,本文简要介绍了涡轮空气马达驱动的单独螺旋桨试验系统,设计了高精度流量控制装置、螺旋桨驱动及传动机构、螺旋桨、旋转轴天平,在F... 详细信息

为在FL-10风洞准确获得螺旋桨缩比模型拉力系数与试验风速、螺旋桨转速、桨叶角及螺旋桨效率的对应关系,本文简要介绍了涡轮空气马达驱动的单独螺旋桨试验系统,设计了高精度流量控制装置、螺旋桨驱动及传动机构、螺旋桨、旋转轴天平,在FL-9风洞进行了测试,测试结果表明,FL-10风洞的涡轮空气马达单独螺旋桨试验系统的核心结构设计合理,运行可靠,有效拓展了FL-10风洞在该领域的试验能力。

关键词：螺旋桨滑流风洞试验动力模拟

The Potential Role of Powdery Mildew-Resistance Gene Pm40 in Chinese Wheat-Breeding Programs in the Post-Pro21 Era

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Engineering 2018年第4期4卷 500-506页

作者： shengwen Tang Yuting Hu Shengfu Zhong Peigao Luo Sichuan Provincial Key Laboratory of Plant Breeding and Genetics Sichuan Agricultural University Chengdu 611130 China State Key Laboratory for Biology of Plant Diseases and Insect Pests Institute of Plant Protection Chinese Academy of Agricultural Sciences Beijing 100193 China

Powdery mildew, which is caused by Blumeria graminis f. sp. tritici （Bgt）, is an important leaf disease that affects wheat yield. Powdery mildew-resistance （Pro） gene Pro21 was first transferred into wheat in the 1980s, by translocating the Heuchera villosa chromosome arm 6VS to the wheat chromosome arm 6AL （6VS.6AL）. Recently, new Bgt isolates that are virulent to Pm21 have been identified in some wheat fields, indicating that wheat breeders should be aware of the risk of deploying Pm21, although pathological details regarding these virulent isolates still remain to be discovered. Pm40 was identified and mapped on the wheat chromosome arm 7BS from several wheat lines developed from the progenies of a wild cross between wheat and Thinopyrum intermedium. Pm40 offers a broad spectrum of resistance to Bgt, which suggests that it is likely to provide potentially durable resistance. Cytological methods did not detect any large alien chromosomal segment in the wheat lines carrying Pm40. lines with Pm40 and promising agronomical traits have been released by several wheat-breeding programs in the past several years. Therefore, we believe that Pm40 will play a role in powdery mildew-resistance wheat breeding after Pm21 resistance is overcome by Bgt isolates. In addition, both Prn21 and Pm40 were derived from alien species, suggesting that the resistance genes derived from alien species are potentially more durable or effective than those identified from wheat.

关键词： Wheat Powdery mildew Pro21 Pm40 Alien species Native resistance