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Zeolite polymer membrane as protective interface for Mg battery

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Rare Metals 2024年第9期43卷 4636-4638页

作者： Hai-Xia Wu kai-Lu guo College of Chemistry and Chemical Engineering Henan Key Laboratory of Function-Oriented Porous MaterialsLuoyang Normal UniversityLuoyang 471934China

Excessive electrolyte decomposition seriously determines the performance of high-voltage Mg batteries. In Nazar's work, the strategy using a zeolite polymer membrane as a protective interface was proposed to restrain the electrolyte decomposition. This strategy could boost Mg plating/stripping performance up to 6000 h in zeolite/Mg|zeolite/Mg symmetric cells and 91%capacity retention in zeolite/Mg||Mo_(3)S_(4)battery after 200 *** storage devices have been intensively explored because of their important roles in our daily lives [1D3].

关键词： zeolite interface electrolyte

Nuclei-rich galvanizing strategy for suppressing zinc dendrite growth

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Rare Metals 2024年第8期43卷 4016-4018页

作者： Hai-Xia Wu kai-Lu guo College of Chemistry and Chemical Engineering Henan Key Laboratory of Function-Oriented Porous MaterialsLuoyang Normal UniversityLuoyang 471934China

The uncontrolled growth of zinc dendrites on zinc anode hinders the application of zinc ion *** solve this problem,Lu's group proposed a nuclei-rich galvanizing strategy for suppressing the zinc dendrite *** allows the nuclei-rich zinc electrode to cycle steadily for1200 h and have a high Coulombic efficiency of 99.7%at15 mA·cm^(-2)with a deposited amount of 10 mAh·cm^(-2).Moreover,the Zn-MnO_(2) battery with a low N/P ratio of 1.9exhibited sustained cycling life.

关键词： cycling sustained battery

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考虑双线相互干涉的铁路项目施工组织研究

山东理工大学学报（自然科学版） 2025年第1期39卷 52-59页

作者：周亦威杨烁郭锴上海理工大学管理学院上海200093 上海理工大学智慧应急管理学院上海200093

针对线状活动铁路工程施工场景,在双线相互干涉条件下,基于线性计划方法,对双线的空间表达以施工区段为单位进行重构,建立时间-施工区段模型,考虑时间、空间、施工资源等约束,构建线路内部约束条件,再以线路内部约束为基础,建立线路间... 详细信息

针对线状活动铁路工程施工场景,在双线相互干涉条件下,基于线性计划方法,对双线的空间表达以施工区段为单位进行重构,建立时间-施工区段模型,考虑时间、空间、施工资源等约束,构建线路内部约束条件,再以线路内部约束为基础,建立线路间约束条件。结合标准遗传算法,以各条线路各区段内施工资源配置情况为自变量,构建双线相互干涉条件下铁路工程施工进度计划工期优化算法,能够在算法中自动输出最优工期条件下的资源配置情况,根据算法输出的最优工期和资源配置情况制作对应的线性计划图。算例仿真结果表明,工期优化模型和算法能够高效获得最短工期下双线相互干涉的铁路项目施工进度计划,验证了本文模型的合理性和算法的有效性。

关键词：铁路施工进度管理线性计划方法遗传算法双线相互干涉

Multi-party blind quantum computation protocol with mutual authentication in network

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Science China(Information Sciences) 2021年第6期64卷 158-171页

作者： Rui-Ting SHAN Xiubo CHEN kai-guo YUAN Information Security Center State Key Laboratory of Networking and Switching TechnologyBeijing University of Posts and Telecommunications

Blind quantum computation(BQC) can ensure a client with limited quantum capability safely delegates computing tasks to a remote quantum server. In order to resist attacks from ignoring identity authentication in BQC protocols, it is necessary to guarantee the legality of both clients and servers in a multi-party BQC network. So we propose a multi-party BQC protocol involving three phases to distribute shared keys and authenticate identities. Firstly, by using the advantages of measurement device independent quantum key distribution(MDI-QKD), the registered client and the assigned server could share the initial key safely in registration phase. Secondly, with the help of semi-honest certificate authority(CA), mutual identity authentication phase realizes the two-way authentication from both sides through the shared key simultaneously. Thirdly, in the blind quantum computing phase, a registered client can complete his computing task by just measuring the qubits from the assigned server rather than preparing the qubits. Moreover,combined with first-in-first-out(FIFO) principle, clients' authentication and blind quantum computing can be processed in parallel. The protocol can also be applied in other multi-party BQC protocols with the universality of resource states. Compared with other BQC protocols, the reliability of the protocol with identity authentication is guaranteed, and the efficiency will be significantly reflected in real experiments.

关键词： blind quantum computation mutual identity authentication load balancer semi-trust CA quantum network

Point Defect Engineering Boosting the Thermoelectric Properties of Layered 122 Zintl Compounds

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Chinese Journal of Structural Chemistry 2020年第5期39卷 815-820页

作者： guo kai HUO Hao-Jie LUO Jun School of Materials Science and Engineering Shanghai UniversityShanghai 200444China Materials Genome Institute Shanghai UniversityShanghai 200444China

The layered 122 Zintl compounds have become an intriguing class of thermoelectric materials due to the promising electronic transport properties and inherently low thermal conductivity,showing the typical characteristics of"phonon-glass electron-crystal".Owing to the unprecedented performance tunability,the thermoelectric properties of the layered-structure compounds are completive with some traditional thermoelectric *** defects involving vacancy,aliovalent doping and equivalent alloying atoms have been introduced to further enhance the thermoelectric *** review emphasizes the effects of various point defects on the thermoelectric parameters,and provides perspective on the strategies for increasing the thermoelectric figure of merit zT,which are believed to be applicable for improving the thermoelectric properties of many other compounds.

关键词： layered structure 122 Zintl phase point defect orbital alignment phonon scattering thermoelectric properties

Boosting electromagnetic wave absorption of Ti_(3)AlC_(2) by improving effective electrical conductivity

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Journal of Advanced Ceramics 2023年第8期12卷 1533-1546页

作者： kai-Yu guo Lin Chen Guan-Jun Yang State Key Laboratory for Mechanical Behavior of Materials School of Materials Science and EngineeringXi’an Jiaotong UniversityXi’an 710049China

Electromagnetic wave-absorbing(EMA)materials at high temperatures are limited by poor conduction loss(L_(c)).However,adding conductors simultaneously increases the conduction loss and interfacial polarization loss,leading to a conflict between impedance matching(Z_(in)/Z_(0))and electromagnetic wave *** will prevent electromagnetic waves from entering the EMA materials,finally reducing overall absorbing ***,the effective electrical conductivity(σ)is enhanced by synchronizing particle size and grain number of Ti_(3)AlC_(2) to increase the conduction loss and avoid the conflict between the impedance matching and the electromagnetic wave *** a result,the best-absorbing performance with an effective absorption bandwidth(EAB)of 4.8 GHz(10.6–15.4 GHz)at a thickness of only 1.5 mm is realized,which is the best combination of wide absorption bandwidth and small thickness,and the minimum reflection loss(RL_(min))reaches−45.6 dB at 4.1 *** short,this work explores the regulating mechanism of the EMA materials of effective electrical conductivity by simulated calculations using the Vienna ab-initio Simulation Package(VASP)and COMSOL as well as a series of experiments,which provide new insight into a rational design of materials with anisotropic electrical conductivity.

关键词： anisotropic electrical conductivity conduction loss(Lc) interfacial polarization loss(LIP) effective electrical conductivity co-optimize impedance matching(Zin/Z0) electromagnetic wave loss

Scaling laws and mechanical properties of nanoporous copper

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Journal of Iron and Steel Research International 2017年第10期24卷 1041-1047页

作者： Lin-kai guo Lei Wang Dong-hui Yang College of Mechanics and Materials Hohai UniversityNanjing 210098JiangsuChina

Through molecular dynamics simulations,the mechanical behavior of nanoporous copper under impact loading was investigated with relative densities ranging from 77.91% to 98.36%,focusing on deformation mechanism,the scaling laws and influence of ligament *** show that the classical Gibson-Ashby′s scaling laws should be modified for prediction of both the Young′s modulus and yield stress.A proportional relationship is established between cell wall thickness and yield stress,and new modified scaling equations are built for nanoporous copper with consideration on both relative mass density and size effects of *** size effect can be explained by larger surface area/volume ratio of samples with thinner ligament size and limited dislocation source activation due to narrow space between larger numbers of voids.

关键词： Nanoporous copper Mechanical property Molecular dynamics Scaling lawSize effect

HYDRAULIC PRESSURE SIGNAL DENOISING USING THRESHOLD SELF-LEARNING WAVELET ALGORITHM

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Journal of Hydrodynamics 2008年第4期20卷 433-439页

作者： guo Xin-lei YANG kai-lin guo Yong-xin Department of Hydraulics China Institute of Water Resources and Hydropower Research Beijing 100044 China

A pre-filter combined with threshold self-learning wavelet algorithm is proposed for hydraulic pressure signals denoising. The denoising threshold is self-learnt in the steady flow state, and then modified under a given limit to make the mean square errors between reconstruction signals and desirable outputs minimum, so the corresponding optimal denoising threshold in a single operating case can be obtained. These optimal thresholds are used for the whole signal denoising and are different in various cases. Simulation results and comparative studies show that the present approach has an obvious effect of noise suppression and is superior to those of traditional wavelet algorithms and back-propagation neural networks. It also provides the precise data for the next step of pipeline leak detection using transient technique.

关键词： hydraulic pressure signal wavelet threshold denoising self-learning neural network

Application of Bipartite and Tripartite Entangled State Representations in Quantum Teleportation of Continuous Variables

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Communications in Theoretical Physics 2005年第2X期44卷 269-273页

作者： YUAN Hong-Chun QI kai-guo Department of Physics University of Science and Technology of China Hefei 230026 China Department of Physics Huaibei Coal Industry Teachers' College Huaibei 235000 China

We mostly investigate two schemes. One is to teleport a multi-mode W-type entangled coherent state using a peculiar bipartite entangled state as the quantum channel different from other proposals. Based on our formalism,teleporting multi-mode coherent state or squeezed state is also possible. Another is that the tripartite entangled state is used as the quantum channel of controlled teleportation of an arbitrary and unknown continuous variable in the case of three participators.

关键词： entangled state representation continuous variable quantum teleportation