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A widely used nonionic surfactant with desired functional groups as aqueous electrolyte additives for stabilizing Zn anode

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Rare Metals 2024年第8期43卷 3692-3701页

作者： Yue-Xian Song Xiao-Feng Wang Cai-Bin Liu kai-xuan guo Xu-Huan guo Xiao-Bin Zhong Yao-Hui Zhang kai Wang Hui-Juan guo Li-Xin Zhang Jun-Fei Liang School of Energy and Power Engineering North University of ChinaTaiyuan 030051China Key Laboratory of Green Chemical Process of Ministry of Education Hubei Key Laboratory of Novel Chemical Reactor and Green Chemical TechnologySchool of Chemical Engineering and PharmacyWuhan Institute of TechnologyWuhan 430073China Shanxi Provincial Key Laboratory for High Performance Battery Materials and Devices Taiyuan 030051China

Aqueous Zn-ion batteries(AZIBs) have emerged as potential candidates for Li-ion batteries due to their intrinsic safety and high ***,metallic Zn anodes encounter dendrite growth and water-induced corrosion,rendering poor stability and severe irreversibility at the electrode/electrolyte interface during *** stabilize the Zn anode,we report a low-cost and effective nonionic surfactant,Tween-20 polymer,as an electrolyte additive for *** Tween-20,sequential oxyethylene groups tended to be preferentially adsorbed on the Zn electrode to form a shielding layer for regulating uniform Zn ***,the hydrophobic hendecyl chains prevented H_(2)O-induced corrosion on the Zn anode *** from the desired functional groups,when only trace amounts of Tween-20(0.050 g·L^(-1)) were used,the Zn anode displayed good cycling stability over 2170 h at10 mA·cm^(-2) and a high average Coulombic efficiency of98.94% over 1000 *** Tween-20 polymer can also be effectively employed in MnO_(2)/Zn full *** their toxicity,price and amount of usage,these surfactant additives provide a promising strategy for realizing the stability and reversibility of high-performance Zn anodes.

关键词： Zn anode Dendrite growth Tween-20 polymer Surfactant additive Aqueous electrolyte

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Computer-aided recognition and assessment of a porous bioelastomer in ultrasound images for regenerative medicine applications

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Medicine in Novel Technology and Devices 2023年第3期19卷 41-52页

作者： Dun Wang Sheng Yang kai-xuan guo Yan-Ying Zhu Jia Sun Aliona Dreglea Yan-Hong Gao Jiao Yu College of Science Liaoning Petrochemical UniversityFushunLiaoning113001PR China Industrial Mathematics Laboratory Baikal School of BRICSIrkutsk National Research Technical UniversityIrkutsk664074Russia Department of Ultrasound General Hospital of Central Theater Command of People's Liberation ArmyWuhan430070PR China Liaoning Provincial Key Laboratory of Novel Micro-nano Functional Materials Liaoning Petrochemical UniversityFushunLiaoning113001PR China

It is difficult to use a single edge operator in image processing to extract continuous and accurate contours of a porous bioelastomer due to the fuzzy boundary and complex background in ultrasound *** solve this problem,this paper proposes a joint algorithm for bioelastomer contour detection and a texture feature extraction method for monitoring the degradation performance of ***,the mean-shift clustering method is utilized to obtain the clustering feature information of bioelastomers and native tissue from manually segmented images,and this information is used as the initial information in the image binarization algorithm for image ***,Otsu's thresholding method and mathematical morphology are applied in the process of image ***,the Canny edge detector is employed to extract the complete bioelastomers contour from the binary *** verify the robustness of the proposed joint algorithm,the results using the proposed joint algorithm,where mean-shift clustering is replaced with k-means clustering are also *** proposed joint algorithm based on mean-shift clustering outperforms the joint algorithm based on k-means clustering,as well as algorithms that directly apply the Canny,Sobel and Laplacian *** feature extraction is based on the computer-aided recognition of *** region of interest(ROI)is set in the scaffold region,and the first-order statistical features and second-order statistical features of the greyscale values of the ROI are extracted and *** proposed joint algorithm can not only extract ideal bioelastomers contours from ultrasound images but also provide valuable feedback on the degradation behaviour of bioelastomers at implant sites.

关键词： Ultrasound imaging Computer-aided recognition Tissue repair Bioelastomers

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面向网格计算的动态容错服务框架设计（英文）

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机床与液压 2016年第24期44卷 138-145页

作者：雷正桥伍文棣郭凯旋刘珊重庆工业职业技术学院重庆401120 重庆汉锦科技有限公司重庆400010

网格计算在研究复杂问题求解和解决大型科学计算方面有重要应用,针对高度异构网格本身导致的容错服务难题,探讨了一种面向网格计算的动态容错服务排序框架设计。分析和总结了网格计算的容错要求,给出了基于网格环境的相关故障定义,建立... 详细信息

网格计算在研究复杂问题求解和解决大型科学计算方面有重要应用,针对高度异构网格本身导致的容错服务难题,探讨了一种面向网格计算的动态容错服务排序框架设计。分析和总结了网格计算的容错要求,给出了基于网格环境的相关故障定义,建立了故障的分类模型,提出了一种包括电网故障检测和故障管理内容在内的动态容错服务框架,最后给出了详细的故障容错服务流程。借助仿真实验,初步验证了所提出设计框架的合理性和可行性。研究结果表明:该设计可为面向网格计算的动态容错服务提供一个新的参考框架。

关键词：网格计算异构网格动态容错服务框架

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大学生团体意识缺失的原因与对策思考

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社会工作 2009年第6期 59-61页

作者：张楷潘宣颖郭秀萌广东工业大学社会工作系广东广州510006

本文是对广东部分高校大学生团体意识状况调研的结果。在市场经济大潮中,大学生思想品德表现出一些值得重视的问题,团体意识的缺失是其中重要原因之一。社会发展需要团体合作,团体意识、团队精神越来越受重视。本文从社会工作角度探讨... 详细信息

本文是对广东部分高校大学生团体意识状况调研的结果。在市场经济大潮中,大学生思想品德表现出一些值得重视的问题,团体意识的缺失是其中重要原因之一。社会发展需要团体合作,团体意识、团队精神越来越受重视。本文从社会工作角度探讨大学生的团体意识缺失的原因并提出对策。

关键词：社会工作团体意识对策

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塑胶工件硫化过程的强鲁棒智能控制策略研究（英文）

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机床与液压 2016年第24期44卷 156-160页

作者：邓新莉伍文棣郭凯旋刘珊重庆广播电视大学重庆400052 重庆汉锦科技有限公司重庆400010

针对不确定性导致的塑胶工件硫化过程难于实施数学建模精准控制,探讨了一种强鲁棒智能控制策略。剖析了胶塑工件的硫化效应影响因素,总结了塑胶工件硫化过程的控制论特性,研究了与硫化过程相匹配的强鲁棒控制策略,并构造了一种基于仿人... 详细信息

针对不确定性导致的塑胶工件硫化过程难于实施数学建模精准控制,探讨了一种强鲁棒智能控制策略。剖析了胶塑工件的硫化效应影响因素,总结了塑胶工件硫化过程的控制论特性,研究了与硫化过程相匹配的强鲁棒控制策略,并构造了一种基于仿人智能的强鲁棒控制算法。以典型二阶滞后硫化等效模型为例,基于Matlab软件平台的仿真对比研究,验证了研究控制策略的强鲁棒性能。仿真结果表明:提出的控制策略可对塑胶工件硫化过程实施优化控制,所构造的智能控制算法是合理、可行与有效的。

关键词：胶塑工件硫化复杂过程仿人智能鲁棒控制

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Microstructural evolution of Al-Si coating and its influence on high temperature tribological behavior of ultra-high strength steel against H13 steel

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Journal of Iron and Steel Research International 2017年第10期24卷 1048-1058页

作者： Meng-xuan guo kai-xiang Gao Wu-rong Wang Xi-cheng Wei School of Materials Science and Engineering Shanghai UniversityShanghai 200072China

Al-Si coated ultra-high strength steel（UHSS）has been commonly applied in hot stamping *** influence of austenitizing temperature on microstructure of Al-Si coating of UHSS during hot stamping process and its tribological behavior against H13 steel under elevated temperature were simulatively *** austenitizing temperature of Al-Si coated UHSS and its microstructual evolution were confirmed and analyzed by differential scanning calorimetry and scanning electron microscopy.A novel approach to tribological testing by replicating hot stamping process temperature history was *** show that the hard and stable phases Fe_2Al_5＋FeAl_2 formed on Al-Si coating surface after exposure to 930°C for 5 min,which was found to be correlated to the tribological behavior of *** friction coefficient of coated steel was more stable and higher than that of uncoated *** main wear mechanism of Al-Si coated UHSS was adhesion wear,while abrasive wear was dominant for the uncoated UHSS.

关键词： Hot stamping Al-Si coating Ultra-high strength steel Intermetallic compound Diffusion Friction coefficient Adhesive wear

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Non-frozen process of heavy-ion fusion reactions at deep sub-barrier energies

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Nuclear Science and Techniques 2022年第10期33卷 117-125页

作者： kai-xuan Cheng Jie Pu Yu-Ting Wang Ya-Fei guo Chun-Wang Ma School of Physics Henan Normal UniversityXinxiang 453007China

The hindrance in heavy-ion fusion reactions a deep sub-barrier energies is investigated using the double folding model with a hybrid method between the frozen and adiabatic density *** this method,the density distributions of the projectile and the target depend closely on the distance between *** the distance decreased,the half-density radii of the colliding nucle gradually increased to the half-density radius of the compound *** total potential based on this non-frozen approximation generates a slightly shallower pocket and becomes more attractive inside the pocket compared to that obtained from the frozen approximation.A damping factor was used to simulate the decline of the coupled channel effects owing to the density rearrangement of the two colliding *** calculated fusion cross-sections and astrophysical S factors at the deep sub-barrier energies are both in good agreement with the experimental data for the medium-heavyNi+Ni and medium-lightMg+Si mass *** addition,it was concluded that the apparent maximum of the S factors most likely appears in fusion systems with strong coupling effects.

关键词： Adiabatic approximation Double folding model Fusion hindrance

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Concurrent topology optimization for minimization of total mass considering load-carrying capabilities and thermal insulation simultaneously

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Acta Mechanica Sinica 2018年第2期34卷 315-326页

作者： kai Long xuan Wang Xianguang Gu Beijing Key Laboratory of Energy Safety and Clean Utilization North China Electric Power University State Key Laboratory for Alternate Electrical Power System with Renewable Energy Sources North China Electric Power University State Key Laboratory of Structural Analysis for Industrial Equipment Department of Engineering Mechanics Dalian University of Technology School of Automobile and Traffic Engineering Hefei University of Technology

The present work introduces a novel concurrent optimization formulation to meet the requirements of lightweight design and various constraints *** displacement of macrostructure and effective thermal conductivity of microstructure are regarded as the constraint functions, which means taking into account both the loadcarrying capabilities and the thermal insulation *** effective properties of porous material derived from numerical homogenization are used for macrostructural analysis. Meanwhile, displacement vectors of macrostructures from original and adjoint load cases are used for sensitivity analysis of the microstructure. Design variables in the form of reciprocal functions of relative densities are introduced and used for linearization of the constraint function. The objective function of total mass is approximately expressed by the second order Taylor series expansion. Then, the proposed concurrent optimization problem is solved using a sequential quadratic programming algorithm, by splitting into a series of sub-problems in the form of the quadratic program. Finally, several numerical examples are presented to validate the effectiveness of the proposed optimization method. The various effects including initial designs, prescribed limits of nodal displacement, and effective thermal conductivity on optimized designs are also investigated. An amount of optimized macrostructures and their corresponding microstructures are achieved.

关键词： Concurrent design Topology optimization Homogenization Thermal insulation Nodal displacement Independent continuous mapping method

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Pointer-prototype fusion network for few-shot named entity recognition

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The Journal of China Universities of Posts and Telecommunications 2023年第5期30卷 32-41页

作者： Zhao Haiying guo xuan School of Artificial Intelligence Beijing University of Posts and TelecommunicationsBeijing 100876China School of Computer Science Beijing University of Posts and TelecommunicationsBeijing 100876China

Few-shot named entity recognition(NER)aims to identify named entities in new domains using a limited amount of annotated *** methods divided this task into entity span detection and entity classification,achieving good *** these methods are limited by the imbalance between the entity and non-entity categories due to the use of sequence labeling for entity span *** this end,a point-proto network(PPN)combining pointer and prototypical networks was ***,the pointer network generates the position of entities in sentences in the entity span detection *** prototypical network builds semantic prototypes of entity types and classifies entities based on their distance from these prototypes in the entity classification ***,the low-rank adaptation(LoRA)fine-tuning method,which involves freezing the pre-trained weights and injecting a trainable decomposition matrix,reduces the parameters that need to be trained and *** experiments on the few-shot NER Dataset(Few-NERD)and Cross-Dataset demonstrate the superiority of PPN in this domain.

关键词： few-shot named entity recognition(NER) pointer network prototypical network low-rank adaptation

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Fully Chemical Recyclable Poly(γ-butyrolactone)-based Copolymers with Tunable Structures and Properties

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Chinese Journal of Polymer Science 2022年第5期40卷 456-461页

作者： Yi-Huan Liu Xin Yuan Jia-Qi Wu Ming-xuan Luo Xin Hu Ning Zhu kai guo Collegeof Biotechnology and Pharmaceutical Engineering Nanjing Tech UniversityNanjing 211800China Collegeof Materials Science and Engineering Nanjing Tech UniversityNanjing 211800China State Key Laboratory of Materials-Oriented Chemical Engineering Nanjing Tech UniversityNanjing 211800China

The emerging chemical recyclable polymers,such as poly(γ-butyrolactone)(PGBL)and poly((R)-3,4-trans six-membered ring-fused GBL)(P((R)-M)),provide a good solution to the plastic ***,these homopolymers suffer from limited structures and ***,we reported a fully chemical recyclable copolymer P(GBL-co-((R)-M))through ring-opening copolymerization(ROCOP)of GBL and(R)-*** employing organomagnesium as the catalyst and regulating the reaction conditions,the chemical structures of copolymers were wellcontrolled(GBL content=13%-78%,Mn=6560-15600 g/mol,DM=1.08-1.59).The resultant P(GBL-co-((R)-M))exhibited fully chemical recyclability,which rapidly and quantitatively depolymerized into initial GBL and(R)-M monomer through *** varying GBL content,tunable thermal properties were achieved for P(GBL-co-((R)-M)).The onset decomposition temperatures of copolymers varied from 193°C to 234°C.A linear evolution of glass transition temperature(T_(g))of P(GBL-co-((R)-M))versus GBL content was obtained as following equation of Tg=-1.06×GBL mol%×100+*** hope that the reported fully chemical recyclable copolymers with tunable structures and properties would serve as the candidate material for sustainable applications.

关键词： Poly(γ-butyrolactone)-based copolymers Ring-opening copolymerization Chemical recyclability Organomagnesium

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