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CCS Chemistry 2024年第6期6卷 1448-1457页

作者： Yuan Xu Shihao Song Hongwei Duan Yinyue Deng Xue-Wei Liu School of Chemistry Chemical Engineering and BiotechnologyNanyang Technological UniversitySingapore 637371 Key Laboratory of Tropical Biological Resources of Ministry of Education School of Pharmaceutical SciencesHainan UniversityHaikou 570228 School of Pharmaceutical Sciences(Shenzhen) Shenzhen Campus of Sun Yat-sen UniversitySun Yat-sen UniversityShenzhen 518107

The emergence of microbial drug resistance,coupled with the paucity of new antibiotics poses an impending threat to public *** this work,we drew inspiration from synthetic peptidoglycan oligomers and successfully constructed antibody-recruiting peptidoglycan analogs,2a-d,with excellent safety profiles and high efficiencies in recruiting antibodies across different ***,we demonstrated that these peptidoglycan analogs could be readily incorporated into bacteria cell walls,whereby both simple monoclonal and pooled human serum antibodies effectively congregated to the surfaceengineered bacteria,leading to the complete extermination of the engineered bacterial cells both in vitro and in *** peptidoglycan analog agents for recruiting endogenous antibodies to combat pathogenic bacteria enable further development of promising broad-spectrum immunotherapeutics.

关键词： chitosan bacterial infection endogenous antibodies bacterial surface engineering peptidoglycan analogs

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基于同质中间模态的跨模态行人再识别方法

图学学报 2024年第4期45卷 670-682页

作者：罗智徽胡海涛马潇峰程文刚华北电力大学控制与计算机工程学院北京102206 复杂能源系统智能计算教育部工程研究中心河北保定071003

可见光-红外跨模态行人再识别(VI-Re ID)旨在对不同摄像头采集同一行人的可见光图像和红外图像进行检索与匹配。除了存在可见光行人再识别(Re ID)中因位姿、视角、局部遮挡等造成的模态内差异外,可见光图像和红外图像的模态间差异是VI-R... 详细信息

可见光-红外跨模态行人再识别(VI-Re ID)旨在对不同摄像头采集同一行人的可见光图像和红外图像进行检索与匹配。除了存在可见光行人再识别(Re ID)中因位姿、视角、局部遮挡等造成的模态内差异外,可见光图像和红外图像的模态间差异是VI-ReID的主要挑战。现有方法通常对2种模态的图像进行联合特征学习来缩小模态间差异,忽略了可见光和红外两种模态图像在通道上的本质不同。为此,本文试图从2种模态共同生成一种中间模态来辅助缩小模态间差异,并在标准ViT(vision transformer)网络上通过局部特征和全局特征的融合来优化特征嵌入学习。首先,设计同质中间模态生成器,通过可见光图像和红外图像共同生成同质中间模态(H-modality)图像,将3种模态图像投影到统一的特征空间进行联合约束,从而借助中间模态缩小可见光模态和红外模态间的差异,实现图像级对齐。进一步提出一种基于同质中间模态的Transformer跨模态行人再识别方法,使用ViT提取全局特征,设计一个局部分支以增强网络的局部感知能力。在全局特征提取中,为了增强全局特征的多样性,引入头部多样性模块(head enrich module)使不同的头聚合图像不同的模式。该方法融合全局特征与局部特征,能够提高模型的判别能力,在SYSU-MM01和RegDB数据集上的rank-1/m AP分别达到67.68%/64.37%和86.16%/79.11%,优于现有大多数最前沿的方法。

关键词：行人再识别跨模态 Transformer 中间模态特征融合

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结构与纹理混合增强的生成对抗壁画修复算法(英文)

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Journal of Measurement Science and Instrumentation 2024年

作者：陶美风陈永赵梦雪张娇娇兰州交通大学电子与信息工程学院甘肃省人工智能与图形图像处理工程研究中心

针对现有深度学习修复方法修复壁画时，未考虑结构和纹理信息的联合引导，导致修复结果易出现结构紊乱和纹理模糊等问题，本文提出了一种结构与纹理混合增强的生成对抗壁画修复算法。首先，构建动态卷积级联的结构引导分支，提高结构特... 详细信息

针对现有深度学习修复方法修复壁画时，未考虑结构和纹理信息的联合引导，导致修复结果易出现结构紊乱和纹理模糊等问题，本文提出了一种结构与纹理混合增强的生成对抗壁画修复算法。首先，构建动态卷积级联的结构引导分支，提高结构特征的表达能力，并利用结构信息指导编码器编码，增强编码特征图的边缘轮廓信息。然后，设计多粒度特征提取模块得到纹理引导分支的纹理特征，利用多尺度纹理信息引导解码器重构修复，提高壁画的纹理一致性。最后，采用跳跃连接促进结构和纹理的特征共享，并利用谱归一化马尔科夫判别器完成壁画修复。通过对真实敦煌壁画数字化修复实验，结果表明，所提方法主客观评价均优于比较算法，修复结果更加清晰自然。

关键词：图像处理壁画修复结构与纹理增强动态卷积多粒度特征提取

Flexible Covalent Organic Frameworks:Design,Synthesis,and Applications

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CCS Chemistry 2024年第4期6卷 856-881页

作者： Chunqing Ji Chengjun Kang Bidhan Chandra Patra Dan Zhao Department of Chemical and Biomolecular Engineering National University of SingaporeSingapore 117585

Structural flexibility is an intriguing characteristic observed in materials that endows them with dynamic properties,allowing for intelligent adaptation and deformation in response to varying *** organic frameworks(COFs),a promising class of crystalline porous polymers,have garnered significant attention due to their unique features,including well-ordered,predesignable,and tunable structures,as well as their light-weighted nature and high thermal/chemical *** flexibility into COFs offers a captivating pathway for developing advanced materials with dynamic properties and versatile *** flexible COF field is currently experiencing rapid expansion,and there is a growing need for systematic review articles that offer a comprehensive overview of the developments in this *** this mini-review,we delve into the factors that contribute to structural flexibility in COFs from the point of structural *** summarize and categorize various modes of achieving flexibility across different dimensions,and discuss the potential applications of flexible COFs in vapor/gas adsorption,sensing,and smart membrane separations;further,we highlight their prospects and future research advancement.

关键词： covalent organic frameworks framework flexibility inducing factors flexibility modes smart materials

AI-Based Advanced Approaches and Dry Eye Disease Detection Based on Multi-Source Evidence:Cases,Applications,Issues,and Future Directions

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Big Data Mining and Analytics 2024年第2期7卷 445-484页

作者： Mini Han Wang Lumin Xing Yi Pan Feng Gu Junbin Fang Xiangrong Yu Chi Pui Pang Kelvin Kam-Lung Chong Carol Yim-Lui Cheung Xulin Liao Xiaoxiao Fang Jie Yang Ruoyu Zhou Xiaoshu Zhou Fengling Wang Wenjian Liu Zhuhai People’s Hospital(Zhuhai Hospital Affiliated with Jinan University/The First Affiliated Hospital of Faculty of Medicine Macao University of Science and Technology) Zhuhai 519000China Department of Ophthalmology and Visual Sciences The Chinese University of Hong KongHong Kong 999077China Faculty of Data Science City University of MacaoMacao 999078China Zhuhai Institute of Advanced Technology Chinese Academy of Sciences Zhuhai 519000China Perspective Technology Group Zhuhai 519000China First Affiliated Hospital of Shandong First Medical University Shandong Provincial Qianfoshan Hospital Jinan 250000China Shenzhen Institute of Advanced Technology Chinese Academy of SciencesShenzhen 518000China College of Staten Island The City University of New YorkNY 10314USA Department of Optoelectronic Engineering Jinan UniversityGuangzhou 510000China Zhuhai Aier Eye Hospital Zhuhai 519000China College of Artificial Intelligence Chongqing Industry and Trade PolytechnicChongqing 400000China Centre for Science and Technology Exchange and Cooperation between China and Portuguese-Speaking Countries Zhuhai 519000China School of Artificial Intelligence Hezhou UniversityHezhou 542899China

This study explores the potential of Artificial Intelligence(AI)in early screening and prognosis of Dry Eye Disease(DED),aiming to enhance the accuracy of therapeutic approaches for eye-care *** the promising opportunities,challenges such as diverse diagnostic evidence,complex etiology,and interdisciplinary knowledge integration impede the interpretability,reliability,and applicability of AI-based DED detection *** research conducts a comprehensive review of datasets,diagnostic evidence,and standards,as well as advanced algorithms in AI-based DED detection over the past five *** DED diagnostic methods are categorized into three groups based on their relationship with AI techniques:(1)those with ground truth and/or comparable standards,(2)potential AI-based methods with significant advantages,and(3)supplementary methods for AI-based DED *** study proposes suggested DED detection standards,the combination of multiple diagnostic evidence,and future research directions to guide further ***,the research contributes to the advancement of ophthalmic disease detection by providing insights into knowledge foundations,advanced methods,challenges,and potential future perspectives,emphasizing the significant role of AI in both academic and practical aspects of ophthalmology.

关键词： Artificial Intelligence(AI) ophthalmology Dry Eye Disease(DED)detection multi-source evidence

Effect of Heat Treatment on Microstructure and Mechanical Behavior of Cu-Bearing 316L Stainless Steel Produced by Selective Laser Melting

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Acta Metallurgica Sinica(English Letters) 2024年第1期37卷 169-180页

作者： Huan Yang Ying Liu Jianbo Jin Kunmao Li Junjie Yang Lingjian Meng Chunbo Li Wencai Zhang Shengfeng Zhou Sino-German College of Intelligent Manufacturing Shenzhen Technology UniversityShenzhen518118China Institute of Advanced Wear and Corrosion Resistance and Functional Materials Jinan UniversityGuangzhou510632China Department of Orthopedics First Affiliated Hospital of Jinan UniversityGuangzhou510632China

Cu-bearing stainless steels(SSs)with high strength,excellent plasticity,and effective antimicrobial properties hold significant potential for applications in the marine *** this study,Cu-bearing SSs with copper ranging from 0 to 6.0 wt%were successfully prepared using selective laser melting(SLM)*** the Cu-bearing SSs with different copper contents,the effect of heat treatment on the microstructural and mechanical behaviors was studied *** observations revealed that the subgrain size of Cu-bearing SSs increased with heat treatment at 500℃ and 700℃ for 6 ***,the tensile strength and elongation increased after the heat treatment temperature due to the combined effect of dislocations,twins,andε-Cu precipitated ***,after heat treatment at 700℃,the SLM4.5Cu sample exhibited an abnormal rise in tensile strength and *** finding suggests that the diffusion strengthening caused byε-Cu precipitates exceeded the stacking fault ***,the tensile strength and elongation reached 693.32 MPa and 56.94%,*** work provides an efficient approach for preparing Cu-bearing SSs with exceptional strength and plasticity.

关键词： Selective laser melting Cu-bearing stainless steel(SS) Heat treatment Mechanical properties

Reliable ferroelectricity down to cryogenic temperature in wakeup free Hf_(0.5)Zr_(0.5)O_(2)thin films by thermal atomic layer deposition

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Journal of Semiconductors 2024年第3期45卷 33-37页

作者： Shuyu Wu Rongrong Cao Hao Jiang Yu Li Xumeng Zhang Yang Yang Yan Wang Yingfen Wei Qi Liu State Key Laboratory of Fabrication Technologies for Integrated Circuits Institute of MicroelectronicsChinese Academy of SciencesBeijing 100029China Frontier institute of Chip and System Fudan UniversityShanghai 200433China College of Electronic Science and Technology National University of Defense TechnologyChangsha 410073China University of Chinese Academy of Sciences Beijing 100049China

The performance and reliability of ferroelectric thin films at temperatures around a few Kelvin are critical for their application in *** this work,TiN/Hf_(0.5)Zr_(0.5)O_(2)/TiN capacitors that are free from the wake-up effect are investigated systematically from room temperature(300 K)to cryogenic temperature(30 K).We observe a consistent decrease in permittivity(εr)and a progressive increase in coercive electric field(Ec)as temperatures *** investigation reveals exceptional stability in the double remnant polarization(2P_(r))of our ferroelectric thin films across a wide temperature ***,at 30 K,a 2P_(r)of 36μC/cm^(2)under an applied electric field of 3.0 MV/cm is ***,we observed a reduced fatigue effect at 30 K in comparison to 300 *** stable ferroelectric properties and endurance characteristics demonstrate the feasibility of utilizing HfO_(2)based ferroelectric thin films for cryo-electronics applications.

关键词： hafnia-zirconia solid solution ferroelectricity cryogenic temperature wake-up effect

Enhanced near-room-temperature thermoelectric performance in GeTe

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Rare Metals 2022年第9期41卷 3027-3034页

作者： Xian Yi Tan Jin-Feng Dong Ning Jia Hong-Xia Zhang Rong Ji Ady Suwardi Zhi-Liang Li Qiang Zhu Jian-Wei Xu Qing-Yu Yan School of Materials Science and Engineering Nanyang Technological UniversitySingapore639798Singapore Institute of Materials Research and Engineering Agency for ScienceTechnology and ResearchSingapore138634Singapore Key Laboratory of High-Precision Computation and Application of Quantum Field Theory of Hebei Province College of Physics Science and TechnologyHebei UniversityBaoding071002China

GeTe is an excellent mid-temperature thermoelectric material with high dimensionless figure of merit(ZT)values at temperatures over 600 *** near-room-temperature performance is less studied due to the intrinsic high carrier ***,we successfully enhance the Seebeck coefficient of GeTe from~30 to 220μV·K^(−1) at 300 K,which is achieved by AgInSe2 alloying and Bi *** is demonstrated that Bi doping helps to optimize the Seebeck coefficient without deteriorating the intrinsic electrical transport properties of the matrix.A high room-temperature power factor(PF)of~11μW·cm^(−1)·K^(−2) is achieved for a wide range of Bi-doped *** simultaneously introduced abundant point defects cause mass and strain fluctuations,which decrease the lattice thermal conductivity(κ_(L))to a low value of 0.6 W·m^(−1)·K^(−1) at 300 *** to the synergetic effects of Bi doping in AgInSe2-alloyed GeTe,a high room-temperature ZT value of 0.46 is obtained together with a high ZT value of 1.1 at 523 K.

关键词： Thermoelectric GeTe Thermal conductivity Room-temperature ZT

轴重和频率对激光修复316L不锈钢涂层在铁路车轮踏面制动中摩擦学性能的影响

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表面工程与再制造 2024年第2期24卷 51-52页

作者： Li S. Xiao Q. Yang W. Yang C. Wang Y. State Key Laboratory of Performance Monitoring and Protecting of Rail Transit Infrastructure East China Jiaotong University Nanchang 330013 China School of Mechatronics and Vehicle Engineering East China Jiaotong University Nanchang 330013 China Railway Industry Key Laboratory of Intelligent Operation and Maintenance of Rolling Stock East China Jiaotong University Nanchang 330013 China

研究复杂制动环境对修复熔覆层服役性能的影响,对提高列车轮轨系统抵御极端恶劣环境的能力具有重要意义。本文针对火车车轮踏面局部损伤问题,利用激光熔覆修复技术在损伤处制备316L不锈钢涂层。采用MS-HT1000高温磨损试验机进行磨损实... 详细信息

研究复杂制动环境对修复熔覆层服役性能的影响,对提高列车轮轨系统抵御极端恶劣环境的能力具有重要意义。本文针对火车车轮踏面局部损伤问题,利用激光熔覆修复技术在损伤处制备316L不锈钢涂层。采用MS-HT1000高温磨损试验机进行磨损实验。然后,分析不同制动条件对修复试样在室温和高温下摩擦磨损性能的影响。

关键词：激光修复铁路车轮局部损伤磨损实验车轮踏面磨损试验机服役性能踏面制动

Development of mix design method based on statistical analysis of different factors for geopolymer concrete

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Frontiers of Structural and Civil Engineering 2022年第10期16卷 1315-1335页

作者： Paramveer SINGH Kanish KAPOOR Department of Civil Engineering Dr B R Ambedkar National Institute of TechnologyJalandhar 144011India

The present study proposes the mix design method of Fly Ash(FA)based geopolymer concrete using Response Surface Methodology(RSM).In this method,different factors,including binder content,alkali/binder ratio,NS/NH ratio(sodium silicate/sodium hydroxide),NH molarity,and water/solids ratio were considered for the mix design of geopolymer *** 2D contour plots were used to setup the mix design method to achieve the target compressive *** proposed mix design method of geopolymer concrete is divided into three categories based on curing regime,specifically one ambient curing(25°C)and two heat curing(60 and 90°C).The proposed mix design method of geopolymer concrete was validated through experimentation of M30,M50,and M70 concrete mixes at all curing *** observed experimental compressive strength results validate the mix design method by more than 90%of their target ***,the current study concluded that the required compressive strength can be achieved by varying any factor in the mix *** addition,the factor analysis revealed that the NS/NH ratio significantly affects the compressive strength of geopolymer concrete.

关键词： geopolymer concrete mix design fly ash response surface methodology compressive strength stress—strain