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Multiple Tin Compounds Modified Carbon Fibers to Construct Heterogeneous Interfaces for Corrosion Prevention and Electromagnetic Wave Absorption

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Nano-Micro Letters 2025年第1期17卷 507-527页

作者： Zhiqiang Guo Di Lan Zirui Jia Zhenguo Gao Xuetao Shi Mukun He Hua Guo Guanglei Wu Pengfei yin College of Science Sichuan Agricultural UniversityYa’an 625014People’s Republic of China School of Materials Science and Engineering Hubei University of Automotive TechnologyShiyan 442002People’s Republic of China Institute of Materials for Energy and Environment State Key Laboratory of Bio‑Fibers and Eco‑TextilesCollege of Materials Science and EngineeringQingdao UniversityQingdao 266071People’s Republic of China Shaanxi Key Laboratory of Macromolecular Science and Technology School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’anShaanxi 710072People’s Republic of China

Currently,the demand for electromagnetic wave(EMW)absorbing materials with specific functions and capable of withstanding harsh environments is becoming increasingly ***-component interface engineering is considered an effective means to achieve high-efficiency EMW ***,interface modulation engineering has not been fully discussed and has great potential in the field of EMW *** this study,multi-component tin compound fiber composites based on carbon fiber(CF)substrate were prepared by electrospinning,hydrothermal synthesis,and high-temperature thermal *** utilizing the different properties of different substances,rich heterogeneous interfaces are *** effectively promotes charge transfer and enhances interfacial polarization and conduction *** prepared SnS/SnS_(2)/SnO_(2)/CF composites with abundant heterogeneous interfaces have and exhibit excellent EMW absorption properties at a loading of 50 wt%in epoxy *** minimum reflection loss(RL)is−46.74 dB and the maximum effective absorption bandwidth is 5.28 ***,SnS/SnS_(2)/SnO_(2)/CF epoxy composite coatings exhibited long-term corrosion resistance on Q235 steel ***,this study provides an effective strategy for the design of high-efficiency EMW absorbing materials in complex and harsh environments.

关键词： Electrostatic spinning Component regulation Heterogeneous interfaces Electromagnetic wave absorption Corrosion protection

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Network Robustness Depth and Topology Management of Networked Dynamic Systems

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Journal of Systems Science & Complexity 2016年第1期29卷 1-21页

作者： WANG Leyi LIN feng yin George Department of Electrical and Computer Engineering Wayne State University Department of Mathematics Wayne State University

Networked control systems are subject to adversary conditions that affect their network *** ensure reliable system operations,network topologies need to be characterized and managed for their impact on the overall system *** paper introduces the concept of network robustness depth for this *** event systems are used as a foundation to model dynamic behavior of network topologies,support their analysis,and carry out their *** analysis relates the link reliability probabilities to a probabilistic characterization of network robustness *** topology management strategies are discussed,including passive methods,random strategies,and optimization *** respective benefits and limitations are *** using platoon control as a platform of hybrid(continuous and discrete event) systems and packet erasure channels as a communication protocol,the results are demonstrated with case studies.

关键词： Network depth network topology robustness

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FCOS-LSC:A Novel Model for Green Fruit Detection in a Complex Orchard Environment

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Plant Phenomics 2023年第3期5卷 546-563页

作者： Ruina Zhao Yujie Guan Yuqi Lu ze Ji Xiang yin Weikuan Jia School of Information Science and Engineering Shandong Normal UniversityJinan 250358China School of Engineering Cardiff UniversityCardiff CF243AAUK School of Agricultural Engineering and Food Science Shandong University of TechnologyZibo 255000China Key Laboratory of Facility Agriculture Measurement and Control Technology and Equipment of Machinery Industry Zhenjiang 212013China

To better address the difficulties in designing green fruit recognition techniques in machine vision systems,a new fruit detection model is *** model is an optimization of the FCOS(full convolution one-stage object detection)algorithm,incorporating LSC(level scales,spaces,channels)attention blocks in the network structure,and named *** method achieves efficient recognition and localization of green fruit images affected by overlapping occlusions,lighting conditions,and capture ***,the improved feature extraction network ResNet50 with added deformable convolution is used to fully extract green fruit feature *** feature pyramid network(FPN)is employed to fully fuse low-level detail information and high-level semantic information in a cross-connected and top-down connected ***,the attention mechanisms are added to each of the 3 dimensions of scale,space(including the height and width of the feature map),and channel of the generated multiscale feature map to improve the feature perception capability of the ***,the classification and regression subnetworks of the model are applied to predict the fruit category and bounding *** the classification branch,a new positive and negative sample selection strategy is applied to better distinguish supervised signals by designing weights in the loss function to achieve more accurate fruit *** proposed FCOS-LSC model has 38.65M parameters,38.72G floating point operations,and mean average precision of 63.0%and 75.2%for detecting green apples and green persimmons,*** summary,FCOS-LSC outperforms the state-of-the-art models in terms of precision and complexity to meet the accurate and efficient requirements of green fruit recognition using intelligent agricultural ***,FCOS-LSC can be used to improve the robustness and generalization of the green fruit detection models.

关键词： connected designing weights

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A stable oxygen evolution splitting electrocatalysts high entropy alloy FeCoNiMnMo in simulated seawater

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Journal of Materials Science & Technology 2023年第7期138卷 29-35页

作者： Peng Li Yuanpeng Yao Wengen Ouyang ze Liu Huayi yin Dihua Wang International Cooperation Base for Sustainable Utilization of Resources and Energy in Hubei Province Wuhan UniversityWuhan 430072China School of Resource and Environmental Science Wuhan UniversityWuhan 430072China Department of Engineering Mechanics School of Civil EngineeringWuhan UniversityWuhan 430072China

Stabilizing anode for oxygen evolution(OER)in chlorine-containing electrolytes is a significant *** corrosion inhibitors in electrolytes can alleviate this problem,but the type and dosage of cor-rosion inhibitors need a lot of exploration,and side reactions may occur to reduce current ***,we prepared a FeCoNiMnMo High entropy alloy(HEA)electrode for OER in simulated seawa-ter without corrosion *** exhibits great electrocatalytic activity(overpotential(η)=237 mV at 10 mA cm^(-2))and excellent stability(200 h at 100 mA cm^(-2)).Experiments and Density Functional The-ory(DFT)calculation show that the protective layer containing K_(2)MoO_(4)is the crucial factor for chlorine resistance of FeCoNiMnMo *** tightly adsorbed state of Cl-and K_(2)MoO_(4)ensures that other oxides are not *** the externally added K_(2)MoO_(4)cannot protect the *** addition,the high-entropy effect of HEA reduces the dissolution of the *** work provides an efficient way to prepare a noble-free HEA catalyst that can stabilize oxygen evolution in corrosive electrolytes.

关键词： High entropy alloy Oxygen evolution reaction Corrosion inhibitor Chlorine resistance K_(2)MoO_(4)

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Relationship of Resistivity with Water Content and Fissures of Unsaturated Expansive Soils

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Journal of China University of Mining and Technology 2007年第4期17卷 537-540页

作者： CHEN Liang yin Zong-ze ZHANG Pei Geotechnical Research Institute Hohai University Nanjing Jiangsu 210098 China Key Laboratory for Geotechnical Engineering of Ministry of Water Resource Hohai University Nanjing Jiangsu 210098 China

The development of fissures in expansive soils has a great effect on the stability of slope. Of the three phases of soils,the gas phase and solid phase are relatively insulated,so the average resistivity of soils can be calculated from the resistivity of the liquid phase. On this basis,the two-part model of resistivity changing with the water saturation of the expansive soil can be deduced. A 2-D resistance grid model is established based on simulating the resistance of ver-tically developed fissures. Variation in measured resistance of vertically developed fissures at different positions can be calculated from this model. Fissure development can be inversely determined from the variation in the measured resis-tance. Finally,the model is verified by an indoor resistivity test for remolded soil samples,indicating that the test result agrees well with that of the model established.

关键词： unsaturated expansive soil resistivity fissure development degree of saturation resistivity structural model

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Local Linear Convergence of an ADMM-Type Splitting Framework for Equality Constrained Optimization

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Journal of the Operations Research Society of China 2021年第2期9卷 307-319页

作者： Jun-feng Yang yin Zhang Department of Mathematics Nanjing UniversityNanjing 210023China Institute for Data and Decision Analytics The Chinese University of Hong KongShenzhen 518172China

We establish local convergence results for a generic algorithmic framework for solving a wide class of equality constrained optimization *** framework is based on applying a splitting scheme to the augmented Lagrangian function that includes as a special case the well-known alternating direction method of multipliers(ADMM).Our local convergence analysis is free of the usual restrictions on ADMM-like methods,such as convexity,block separability or linearity of *** offers a much-needed theoretical justification to the widespread practice of applying ADMM-like methods to nonconvex optimization problems.

关键词： Alternating direction method of multipliers Nonlinear splitting Stationary iterations Spectral radius Local linear convergence

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Properties of Toeplitz Operators on the Dirichlet Space Over the Ball

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Acta Mathematica Sinica,English Series 2019年第10期35卷 1617-1628页

作者： yin yin HU Yu feng LU Liu LIU Department of Mathematics Dalian Maritime UniversityDalian 116024P.R.China Department of Mathematics Dalian University of TechnologyDalian 116024P.R.China

On the Dirichlet space of the unit ball, we study some algebraic properties of Toeplitz operators. We give a relation between Toeplitz operators on the Dirichlet space and their analogues defined on the Hardy space. Based on this, we characterize when finite sums of products of Toeplitz operators are of finite rank. Also, we give a necessary and sufficient condition for the commutator and semi-commutator of two Toeplitz operators being zero.

关键词： Toeplitz operator pluriharmonic symbols Dirichlet space

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Polycrystalline β-C_(3)N_(4) Thin Films Deposited on Single-Crystal KCl(100)Using rf Sputtering

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Chinese Physics Letters 1996年第1期13卷 69-72页

作者： ZHANG ze-bo LI yin-an XIE Si-shen YANG Guo-zhen Institute of Physics Academia SinicaBeijing 100080

The carbon-nitride thin films were deposited on the(100)oriented single-crystai KC1 wafers at ambient temperatures by using rf-plasma *** IR spectrum showed that the Ulins contained carbqn-nitnde *** transmission electron microscopy(TEM)and x-ray diffraction(XRD)measurements indicated the existence of predicted polycrystalline P-C_(3)N_(4) Ulins on the KC1(100)*** the TEM and XRD measured lattice spacings well match the calculated data.

关键词： (4) spacing Crystal

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Compact Toeplitz Operators on the Weighted Dirichlet Space

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Acta Mathematica Sinica,English Series 2015年第1期31卷 35-43页

作者： Yu feng LU yin yin HU Liu LIU School of Mathematical Sciences Dalian University of Technology

In this paper, we completely characterize the compactness of Toeplitz operators with con- tinuous symbol on the weighted Dirichlet space.

关键词： Toeplitz operator Dirichlet space compactness

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Microstructure and hydrogen storage properties of Mg-based Mg85Zn5Ni10 alloy powders

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Journal of Iron and Steel Research International 2018年第11期25卷 1172-1178页

作者： Yi yin Bo Li ze-ming Yuan Yan Qi Yang-huan Zhang Department of Functional Material Research Central Iron and Steel Research InstituteBeijing 100081China Key Laboratory of Integrated Exploitation of Baiyun Obo Multi-Metal Resources Inner Mongolia University of Science and TechnologyBaotou 014010Inner Mongolia China

Mg85Zn5Ni10 ternary alloy was synthesized through vacuum induction melting for the first *** compositions and microstructures of Mg85Zn5Ni10 alloy powders were analyzed by X-ray diffraction (XRD)and scanning electron micro- scopy (SEM).By utilizing a Sieverts apparatus,the hydrogenation and dehydrogenation properties of Mg85Zn5Ni10 powders were measured *** and SEM results indicated that the Mg85Zn5Ni10 alloy powders contained the major phase Mg,the eutectic Mg-Mg2Ni and Mg-MgZn2 *** possible reaction pathway can be inferred as follows:Mg +Mg2Ni +MgZn2 +H2←→MgH2+Mg2NiH4 +MgZn2,indicating that MgZn2 did not react with H2. After activation,the Mg85Zn5Ni10 alloy powders could absorb 5.4 wt.% hydrogen reversibly and held an excellent hydrogenation kinetics at a relatively low *** 360 ℃,the alloy powders desorbed 5.351 wt.% hydrogen in 264 ***,it only had fast dehydrogenation kinetics above 300 ℃.The existence of MgZn2 contributed to improving the kinetic *** the hydriding and dehydriding,the formed cracks and defects promoted the kinetics and thermodynamic *** activation energy for dehydrogenation was 75.514 kJ/*** enthalpy change values of hydrogenation and dehydrogenation were calculated to be -73.064 kJ/mol and 76.674 kJ/mol,respectively,indicating that melting with Ni and Zn could improve the thermodynamic property of Mg slightly.

关键词： Mg85Zn5Ni10 alloy powder Microstructure Hydrogen storage kinetics Activation energy Thermodynamic property

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