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Chinese Geographical Science 2024年第5期34卷 886-898页

作者： hong Haolin WANG {1. XUE Desheng School of Geography and Planning Sun Yat-sen UniversityGuangzhou 510006China

Container ports and hinterland manufacturing are two important forces of the local participation in economic *** study,taking the Pearl River Delta(PRD),China with an export-oriented economy as an example,applies Huff and panel regres-sion models to evaluate the impact of hinterland manufacturing on the development of container ports during the period of 1.93–*** results show that 1.the spatial patterns of hinterlands for hub ports help to determine the distribution range and scale of economic variables that affect port throughput;2)the hinterland’s gross manufacturing output has universally positive influence on port through-put,wherein export-oriented processing and the entire manufacturing industry have significantly positive impact on port throughput in 1.93–201. and 2001.201.,respectively;3)the two internal structural factors related to an export-oriented economy,labor-intensive sectors and foreign-funded terminals,have positively moderate the direct influence of hinterland manufacturing on port *** results highlight the importance of local context in understanding port-manufacturing relationship in developing *** on our findings,policy implications are further proposed to enhance port network organization in PRD.

关键词： container ports hinterland manufacturing local development context Huff model panel regression model Pearl River Delta(PRD),China

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基于观测器的水下机器人神经网络自适应控制

机器人 2004年第6期26卷 515-518页

作者：高建树邢志伟张宏波中国民用航空学院

给出了基于观测器的水下机器人神经网络自适应控制算法 .控制算法由 3部分组成 :输出反馈控制、神经网络以及滑模项 ,其中输出反馈控制为了保证系统的初始稳定性 ;神经网络用于逼近系统的非线性动力学 ;滑模项用于补偿和抑制系统的外部... 详细信息

给出了基于观测器的水下机器人神经网络自适应控制算法 .控制算法由 3部分组成 :输出反馈控制、神经网络以及滑模项 ,其中输出反馈控制为了保证系统的初始稳定性 ;神经网络用于逼近系统的非线性动力学 ;滑模项用于补偿和抑制系统的外部扰动、神经网络逼近误差等 .控制算法中所需要的速度量由状态观测器来提供 .基于Lyapunov稳定理论给出了系统闭环稳定条件和稳定域 .

关键词：水下机器人神经网络控制观测器

Tunable single emitter-cavity coupling strength through waveguide-assisted energy quantum transfer

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Light(Science & Applications) 2024年第9期13卷 1779-1788页

作者： Yuan Liu hongwei Zhou Linhan Lin hong-bo Sun Department of Precision Instrument State Key Laboratory of Precision Measurement Technology and InstrumentsTsinghua UniversityBeijing 100084China State Key Laboratory of Integrated Optoelectronics College of Electronic Science and EngineeringJilin UniversityChangchun 130012China

The emitter-cavity strong coupling manifests crucial significance for exploiting quantum technology,especially in the scale of individual ***,due to the small light-matter interaction cross-section,the single emitter-cavity strong coupling has been limited by its harsh requirement on the quality factor of the cavity and the local density of optical ***,we present a strategy termed waveguide-assisted energy quantum transfer(WEQT)to improve the single emitter-cavity coupling strength by extending the interaction *** ancillary emitters are optically linked by a waveguide,providing an indirect coupling channel to transfer the energy quantum between target emitter and *** enhancement factor of coupling strength eg=g>1. can be easily achieved,which dramatically release the rigorous design of *** an extension of concept,we further show that the ancillae can be used as controlling bits for a photon gate,opening up new degrees of freedom in quantum manipulation.

关键词： quantum coupling transfer

Strong and tough chitin hydrogel constructed by dehydration and rehydration strategy

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Nano Research 2024年第9期17卷 8192-8199页

作者： Rui-Rui Liu Li-bo Mao Shu-{1. Yu Division of Nanomaterials and Chemistry Hefei National Research Center for Physical Sciences at the MicroscaleDepartment of ChemistryInstitute of Biomimetic Materials and ChemistryAnhui Engineering Laboratory of Biomimetic MaterialsUniversity of Science and Technology of ChinaHefei 230026China Institute of Innovative Materials Department of Materials Science and EngineeringDepartment of ChemistrySouthern University of Science and TechnologyShenzhen 518055China

As a renewable,biocompatible,biodegradable soft material,chitin hydrogels have better advantages in stability,antibacterial activity,antifouling,cost,immunogenicity,and so on than most polymer ***,compared with other widely used polymer hydrogels with high strength and toughness,the practical applications of chitin-based hydrogels have been limited by their weak mechanical properties,such as cartilage repair and meniscus ***,we present the design and fabrication of chitin hydrogels with excellent mechanical strength and toughness by a dehydration and rehydration *** sequential dehydration and rehydration processes,the crystalline domains in the chitin hydrogels can be properly *** optimized crystallinity,the elastic modulus of the chitin hydrogels exceeds all previously reported values,and the fracture toughness is even comparable to some synthetic polymer hydrogels,while maintaining a high-water-content of about 80 wt.%.At the same water content,the mechanical properties of the chitin hydrogels are positively correlated with the hydrogel crystallinity,which proves that the change of mechanical properties of hydrogels is not simply dependent on weight *** hydrogels can be further strengthened by incorporating other biopolymers that are intrinsically weak,which makes the hydrogels promising for applications in fields such as cartilage repair and meniscus ***,the hydrogels enable loading and release of water-soluble and poorly water-soluble *** highly extendable strengthening and toughening strategy of chitin and chitin-based biopolymer hydrogels paves the way for their widely applications.

关键词： chitin hydrogel crystallinity rehydration chemical transformation strong and tough

Laser manufacturing of spatial resolution approaching quantum limit

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Light(Science & Applications) 2024年第3期13卷 421-428页

作者： Xiao-Jie Wang hong-Hua Fang Zhen-Ze Li Dan Wang hong-bo Sun State Key Laboratory of Precision Measurement Technology and Instruments Department of Precision InstrumentTsinghua UniversityBeijing 100084China State Key Laboratory of Integrated Optoelectronics College of Electronic Science and EngineeringJilin University2699 Qianjin StreetChangchun 130012China

Atomic and close-to-atom scale manufacturing is a promising avenue toward single-photon emitters,single-electron transistors,single-atom memory,and quantum-bit devices for future communication,computation,and sensing *** manufacturing is outstanding to this end for ease of beam manipulation,batch production,and no requirement for *** is,however,suffering from optical diffraction ***,we report a spatial resolution improved to the quantum limit by exploiting a threshold tracing and lock-in method,whereby the two-order gap between atomic point defect complexes and optical diffraction limit is surpassed,and a feature size ofboron nitride is transformed from stochastic to deterministic,and the emission from individual sites becomes polychromatic to *** a result,single colour centres in the regular array are deterministically created with a unity yield and high positional accuracy,serving as a step forward for integrated quantum technological applications.

关键词： quantum limit resolution

Processing of a low-costγ-γ'NiPtAl coating with improved oxidation resistance

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Rare Metals 2024年第6期43卷 2832-2841页

作者： Yan Jiang Liang-Liang Wei Jian He hong-{1. Guo School of Materials Science and Engineering Beihang UniversityBeijing 100191China Key Laboratory of High-Temperature Structural Materials and Protective Coatings Ministry of Industry and Information TechnologyBeihang UniversityBeijing 100191China

A novelγ-γ'(Ni solid solution—Ni_(3)Al)NiPtAl coating was produced on advanced single-crystal(SC)superalloy N5 by electroplating of a thin Pt coating with~3μm in thickness followed by heat treatment at 1.00℃in *** comparison,a traditionalγ-γ'NiPtAl coating was also produced by electroplating of a thick Pt coating with~6μm in thickness followed by heat treatment at 1.00℃in *** novel coating has a mass gain of~0.5 mg·cm^(-2)after 1.0 h 1.h cyclic oxidation at 1.50℃,showing better oxidation resistance than the traditional *** oxide scale mostly consisting ofα-Al_(2)O_(3)grew on the novel coating because the element Cr from the SC alloy substrate contributes to the formation ofα-Al_(2)O_(3).Pt content in the novel coating has significant effect on the oxidation *** optimized Pt content in the coating is about 1. at%,which is helpful to reduce the diffusion of harmful elements from the substrate into the coating but also to reduce the cost of the coating.

关键词： γ-γ'NiPtAl coating Platinum Oxidation Al_(2)O_(3) Superalloy

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中华绒螯蟹幼蟹维生素C营养需求研究

海洋学报 2005年第1期27卷 130-136页

作者：陈立侨艾春香温小波刘晓玲江洪波华东师范大学生命科学学院上海200062

在每1.0g等氮、等能纯化饲料中分别添加0，1.0，200，400，800，1.00mg维生素C(Vc)多聚磷酸酯(LAPP)，用这样配制成的试验饲料饲喂已淡化5d的河蟹大眼幼体及后续幼蟹25d，探讨Vc对大眼幼体和幼蟹生长、存活、蜕壳频率及抗逆性的影响，... 详细信息

在每1.0g等氮、等能纯化饲料中分别添加0，1.0，200，400，800，1.00mg维生素C(Vc)多聚磷酸酯(LAPP)，用这样配制成的试验饲料饲喂已淡化5d的河蟹大眼幼体及后续幼蟹25d，探讨Vc对大眼幼体和幼蟹生长、存活、蜕壳频率及抗逆性的影响，同时探明幼蟹对Vc的适宜需求量，结果表明，饲料Vc添加量为1.0-400mg／1.0g时，可以保证幼蟹正常生长、存活和蜕皮，尤其以投喂添加Vc200mg／1.0g(C2组)和400mg／1.0g(C3组)饲料的Ⅲ期幼蟹增重率、存活率和平均蜕皮频率较高，其中C2组(上述各指标值)分别为51.．1.％，62．83％，2．58，C3组分别为458．89％，66．1.％，2．61.饲料中缺少Vc时(如C0组)，Ⅲ期幼蟹的增重率、存活率和平均蜕皮频率最低，分别为265．31.，26．67％和2．26．饲料中Vc的添加量达到800mg／1.0g(C4)和1.00mg／1.0g(C5)时，幼蟹的蜕皮反而受到抑制，平均蜕皮频率降低，蜕皮周期延长，且存活率降低，到Ⅲ期幼蟹的增重率、存活率和平均蜕皮频率在C4组分别为355．7％，31.33％，2．39，在C5组分别为307．53％，28．56％，2．1.．此外，各处理组幼蟹对抗逆性影响的试验表明，在一定的范围内，饲料中添加Vc能提高幼蟹的耐低氧能力和耐pH突变能力，而对耐盐度突变能力没有明显的影响．综合上述结果可以得出，为保持幼蟹良好生产性能，饲料中添加的Vc应为200-400mg／1.0g．

关键词：中华绒螯蟹幼蟹维生素C 营养需求抗逆性

UAV-assisted cooperative offloading energy efficiency system for mobile edge computing

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Digital Communications and Networks 2024年第1期10卷 16-24页

作者： Xue-Yong Yu Wen-Jin Niu Ye Zhu hong-{1. Zhu Jiangsu Key Laboratory of Wireless Communications Nanjing University of Posts and Telecommunications Nanjing210003China Engineering Research Centerof Health Service System Based on Ubiquitous Wireless Networks Ministry of EducationNanjng Universityof Posts and Telecommunications Nanjing210003China

Reliable communication and intensive computing power cannot be provided effectively by temporary hot spots in disaster areas and complex terrain ground *** this has greatly developed the application and integration of UAV and Mobile Edge Computing(MEC)to the Internet of Things(loT).However,problems such as multi-user and huge data flow in large areas,which contradict the reality that a single UAV is constrained by limited computing power,still *** to allowing UAV collaboration to accomplish complex tasks,cooperative task offloading between multiple UAVs must meet the interdependence of tasks and realize parallel processing,which reduces the computing power consumption and endurance pressure of *** the computing requirements of the user terminal,delay constraint of a computing task,energy constraint,and safe distance of UAV,we constructed a UAV-Assisted cooperative offloading energy efficiency system for mobile edge computing to minimize user terminal energy ***,the resulting optimization problem is originally nonconvex and thus,difficult to solve *** tackle this problem,we developed an energy efficiency optimization algorithm using Block Coordinate Descent(BCD)that decomposes the problem into three convex ***,we jointly optimized the number of local computing tasks,number of computing offloaded tasks,trajectories of UAV,and offloading matching relationship between multi-UAVs and multiuser *** results show that the proposed approach is suitable for different channel conditions and significantly saves the user terminal energy consumption compared with other benchmark schemes.

关键词： Computation offloading Internet of things(IoT) Mobile edge computing(MEC) Block coordinate descent(BCD)

Macrophage senescence in health and diseases

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Acta Pharmaceutica Sinica B 2024年第4期14卷 1508-1524页

作者： Longling Wang Wenxiang hong hong Zhu Qiaojun He bo Yang Jiajia Wang Qinjie Weng Center for Drug Safety Evaluation and Research Zhejiang Province Key Laboratory of Anti-Cancer Drug ResearchCollege of Pharmaceutical SciencesZhejiang UniversityHangzhou 310058China Nanhu Brain-Computer Interface Institute Hangzhou 311100China Taizhou Institute of Zhejiang University Taizhou 318000China The Second Affiliated Hospital Zhejiang University School of MedicineHangzhou 310009China

Macrophage senescence,manifested by the special form of durable cell cycle arrest and chronic low-grade inflammation like senescence-associated secretory phenotype,has long been consid-ered *** senescence of macrophages may lead to maladaptation,immune dysfunction,and finally the development of age-related diseases,infections,autoimmune diseases,and ***,it is a ubiquitous,multi-factorial,and dynamic complex phenomenon that also plays roles in remodeled processes,including wound repair and *** this review,we summarize some general molecular changes and several specific biomarkers during macrophage senescence,which may bring new sight to recognize senescent macrophages in different ***,we take an in-depth look at the functional changes in senescent macrophages,including metabolism,autophagy,polarization,phagocytosis,antigen presentation,and infiltration or ***,some degenerations and diseases associated with senescent macrophages as well as the mechanisms or relevant genetic regulations of senescent macrophages are integrated,not only emphasizing the possibility of regulating macrophage senescence to benefit age-associated diseases but also has an implication on the finding of potential tar-gets ordrugs clinically.

关键词： Macrophages Senescence Molecular changes Functional alterations Aging tissues Age-associated diseases Drug treatment Genetic regulation

Intelligent representation method of image flatness for cold rolled strip

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Journal of Iron and Steel Research International 2024年第5期31卷 1177-1195页

作者： Yang-huan Xu Dong-cheng Wang hong-min Liu {1.-wei Duan National Engineering Research Center for Equipment and Technology of Cold Strip Rolling Yanshan UniversityQinhuangdao066004HebeiChina National Key Laboratory of Metal Forming Technology and Heavy Equipment China National Heavy Machinery Research Institute Co.Ltd.Xi’an710018ShaanxiChina State Key Laboratory of Metastable Materials Science and Technology Yanshan UniversityQinhuangdao066004HebeiChina

Real flatness images are the bases for flatness detection based on machine vision of cold rolled *** characteristics of a real flatness image are analyzed,and a lightweight strip location detection(SLD)model with deep semantic segmentation networks is *** interference areas in the real flatness image can be eliminated by the SLD model,and valid information can be *** this basis,the concept of image flatness is proposed for the first *** image flatness representation(IFAR)model is established on the basis of an autoencoder with a new *** optimal structure of the bottleneck layer is 1.×1.×4,and the IFAR model exhibits a good representation ***,interpretability analysis of the representation factors is carried out,and the difference and physical meaning of the representation factors for image flatness with different categories are *** flatness with new defect morphologies(bilateral quarter waves and large middle waves)that are not present in the original dataset are generated by modifying the representation factors of the no wave ***,the SLD and IFAR models are used to detect and represent all the real flatness images on the test *** average processing time for a single image is 1..42 ms,which is suitable for industrial *** research results provide effective methods and ideas for intelligent flatness detection technology based on machine vision.

关键词： Cold rolled strip Image flatness Location detection Representation learning bottleneck layer