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International Journal of Minerals,Metallurgy and Materials 2009年第3期16卷 345-348页

作者： Tian Wang Xiao-hui Wang hai Wen long-tu Li State Key Laboratory of New Ceramics and Fine Processing Department of Materials Science and Engineering Tsinghua University Beijing 100084 China

Fine-grained BaTiO3-based X7R ceramic materials were prepared and the effects of milling process on the core-shell structures and dielectric properties were investigated using scanning electron microscope, transmission electron microscope, and energy dispersive spectroscopy （EDS）. As the milling time extends, the dielectric constant of the ceramics increases, whereas the temperature coefficient of capacitance at 125℃ drops quickly. The changes in dielectric properties are considered relevant to the microstructure evolution caused by the milling process. Defects on the surface of BaTiO3 particles increase because of the effects of milling process, which will make it easier for additives to diffuse into the interior grains. As the milling time increases, the shell region gets thicker and the core region gets smaller; however, EDS results show that the chemical inhomogeneity between grain core and grain shell becomes weaker.

关键词： fine-grain barium titanate core-shell structure milling process microstructure capacitor

Explicit and Exact Solutions to N-Order Schrodinger System via an Extended Mapping Approach

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Communications in Theoretical Physics 2006年第3期45卷 483-486页

作者： ZHU hai-Ping ZHENG Chun- long FANG Jian-Ping department of Physics Zhejiang Lishui University Lishui 323000 China Shanghai Institute of Applied Mathematics and mechanics Shanghai University Shanghai 200072 China

In this paper, we extend the mapping approach to the N-order Schrodinger equation. In terms of the extended mapping approach, new families of variable separation solutions with some arbitrary functions are derived.

关键词： extended mapping approach SchrSdinger equation exact solution

大数据背景下的审计方法及其面临的机遇和挑战

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湖北开放职业学院学报 2024年第6期37卷 165-167页

作者：田佳鸣李文龙田海包头职业技术学院经济贸易管理系内蒙古包头014035 内蒙古科技大学经济与管理学院内蒙古包头014010 内蒙古科技大学信息工程学院内蒙古包头014010

传统审计方法在应对复杂数据,尤其是非结构化数据有着先天的不足,难以适应现代审计对海量数据和多元信息的处理需求。目前审计正处在由传统审计向大数据审计的转型期。在详细介绍审计信息化和大数据特征,以及大数据审计分类、实现步骤... 详细信息

传统审计方法在应对复杂数据,尤其是非结构化数据有着先天的不足,难以适应现代审计对海量数据和多元信息的处理需求。目前审计正处在由传统审计向大数据审计的转型期。在详细介绍审计信息化和大数据特征,以及大数据审计分类、实现步骤方法的基础上,对大数据电子数据审计方法与传统常用审计方法进行了对比分析。分析表明,大数据审计在主要审计实效指标方面比较传统审计方法具有很大的优越性。同时阐述了大数据审计技术方法面临着的挑战和机遇。

关键词：传统审计大数据审计审计信息化

Exact Solution to （1＋1）-Dimensional Higher-Order Schrodinger Equation via an Extended Mapping Approach

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Communications in Theoretical Physics 2006年第1期45卷 127-130页

作者： ZHU hai-Ping ZHENG Chun-long FANG Jian-Ping department of Physics Zhejiang Lishui University Lishui 323000 China Shanghai Institute of Applied Mathematics and mechanics Shanghai University Shanghai 200072 China

Starting from a special variable transformation and with the help of an extended mapping approach, the high-order Schrodinger equation （n = 3, 4） is solved. A new family of variable separation solutions with arbitra... 详细信息

关键词： extended mapping approach Schrodinger equation exact solution

Rapid room-temperature synthesis of a porphyrinic MOF for encapsulating metal nanoparticles

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Nano Research 2021年第2期14卷 444-449页

作者： Huihui He Luyan Li Yang Liu Meruyert Kassymova Dandan Li Liangliang Zhang hai-long Jiang Frontiers Science Center for Flexible Electronics(FSCFE) Shaanxi Institute of Flexible Electronics(SIFE)&Shaanxi Institute of Biomedical Materials and Engineering(SIBME)Northwestern Poly technical University(NPU)Xi’an 710072China Institutes of Physics Science and Information Technology Anhui UniversityHefei 230601China Hefei National Laboratory for Physical sciences at the Microscale Department of ChemistryUniversity of Science and Technology of ChinaHefei 230026China

While metal nanoparticles(NPs)have shown great promising applications as heterogeneous catalysts,their agglomeration caused by thermodynamic instability is detrimental to the catalytic *** tackle this hurdle,we successfully prepared a functional and stable porphyrinic metal-organic framework(MOF),PCN-224-RT,as a host for encapsulating metal nanoparticles by direct stirring at room *** a result,Pt@PCN-224-RT composites with well-dispersed Pt NPs can be constructed by introducing pre-synthesized Pt NPs into the precursor solution of *** note,the rapid and simple stirring method in this work is more in line with the requirements of environmental friendly and industrialization compared with traditional solvothermal methods.

关键词： metal nanoparticles room tem perature and rapid synthesis PCN-224 Ostwald ripening

Terrestrial records of the early Albian Ocean Anoxic Event:Evidence from the fuxin lacustrine basin,NE china

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Geoscience Frontiers 2022年第1期13卷 138-157页

作者： Xiao-Tao Xu long-Yi Shao Kenneth A.Eriksson Bo Pang Shuai Wang Cheng-Xue Yang hai-hai Hou College of Geoscience and Surveying engineering China University of Mining and Technology(Beijing)Beijing 100083China Shandong Key Laboratory of Depositional Mineralization&Sedimentary Mineral Shandong University of Science and TechnologyQingdao 266590China department of Geosciences Virginia TechBlacksburgVA 24061USA liaoning Province Geology and Minerals Group Energy Geology Co. Ltd.Shenyang 110000China Institute of Earth sciences China University of Geosciences(Beijing)Beijing 100083China College of Mining Liaoning Technical UniversityFuxin 123000China

The early Albian Oceanic Anoxic Event 1 b(OAE 1 b) is well documented in the Tethys, Pacific and North Atlantic, but few studies have evaluated whether or not terrestrial records of OAE 1 b exist. In order to identify terrestrial records of the early Albian OAE 1 b and to infer possible driving mechanisms, an integrated multi-proxy study from the late Aptian to Albian in the fuxin lacustrine basin was conducted,including thick, organic-rich black mudstones, total organic carbon(TOC), organic carbon isotopes(d13 Corg), mercury concentration(Hg) and results from pyrolysis analyses(S2, Tmaxand HI). Results show three distinct short-term negative d13 Corgexcursions corresponding with relatively high TOC values,which could be counterparts of the Kilian, Paquier and Leenhardt sub-events of the early Albian OAE1 b. Atmospheric CO2 concentration(p CO2) recovered from C3 plant d13 Corgcompositions indicates an increasing trend in Unit C during the early Albian, and there are three short-term increases of p CO2 corresponding to the three sub-events of OAE 1 b at this time interval. We infer that a trend of increasing p CO2 during the Kilian sub-event in the study area is closely related to volcanism. Continental weathering calculated using chemical weathering indices(CIA, WIP and MIA(O)) show an increasing trend during the OAE 1 b interval, likely resulting from warmer and more humid conditions. Mixed sources of terrestrial plants and lacustrine plankton demonstrated by pyrolysis analyses(HI vs. Tmaxand S2 vs. TOC), indicate a terrestrial contribution to the organic-rich sediments of the Kilian, Paquier and Leenhardt sub-events of OAE 1 b. We suggest that a CO2-forced greenhouse effect during the early Albian might have triggered the relatively warm and humid palaeoclimatic conditions, and intensified chemical weathering that combined to create high nutrient and organic matter levels that were flushed into lakes contributing to eutrophication and anoxia in lacustrine and in c

关键词： fuxin Basin Early Albian Organic carbon isotopes Ocean Anoxic Event 1b Terrestrial records

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清水池观察级水下机器人巡检装置设计与实践

中国给水排水 2024年第12期40卷 105-109页

作者：袁曲周冬胡彪王海龙祝灵童力孙倜王凌云武汉市自来水有限公司制水部湖北武汉430034 华中科技大学电气与电子工程学院湖北武汉430074

针对清水池巡检作业中存在需要停产、作业环境差、劳动强度大和成本高等问题,提出了清水池水下机器人巡检的技术方案。在对清水池水下巡检作业进行功能需求、性能需求分析的基础上,给出了装置的具体设计方案,并集成了一套清水池观察级... 详细信息

针对清水池巡检作业中存在需要停产、作业环境差、劳动强度大和成本高等问题,提出了清水池水下机器人巡检的技术方案。在对清水池水下巡检作业进行功能需求、性能需求分析的基础上,给出了装置的具体设计方案,并集成了一套清水池观察级水下机器人巡检装置。在4座清水池进行了水下视频检查、水样采集、泥砂沉积测量和杂物拾取等实验验证,结果表明该技术方案经济、可行,装置实现了清水池不停产水下巡检作业的目标。

关键词：清水池观察级水下机器人巡检装置巡检作业

Frontiers in high entropy alloys and high entropy functional materials

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Rare Metals 2024年第10期43卷 4639-4776页

作者： Wen-Tao Zhang Wen Huang Fu-Jie Yu Qi Zhao Xin-Dong Zhu Tao Feng Yao Jiang Xiao-Ming Li Xue-Fei Miao He Zhu Si Lan Xue-Qian Wang Bao-long Shen Zhe Jia Feng-Qi Zhang Wei Wang Qi Liu Yang Ren Xun-Li Wang Xiao-Ya Cui Xiao-Yang Wang Ya-Nan Chen Bing-Bing Fan Meng-Ru Li Qi-long Gao Jia-Ming Guo Zeng-Bao Jiao Zhi-Min Guo Yu-Ping Zhao Qian Yu Rui Huang Ling-Kun Zhang Yi-Ping Lu Xu-Bo Li Huai-Jun Lin Yan Ma Wei-Ming Yang Zhi-Hua Shen hai-Yan He Yong-Gang Sun Yong-Jiang Huang De-Zhuang Wang Qing-Feng Liu Fei-Yang Wang Hui Liu Hong-Hui Wu Li-Qiang Wang Yang Lu Nan Wang Tian-Li Wang Wei-Bing Liao Yi-Han Wang Yuan Wu Yu-Zhen Yin Jie Pan Yi Zhang Qing Wang Jian-Yang Zhang Tao Yang Yasir Sohail Jin-Yu Zhang Hua Ji Qiang Li Wei-Di Liu Zhi-Gang Chen Xiong-Jun Liu Wen Ma Liang Mao Zhen-Duo Wu School of Materials Science and engineering Nanjing University of Science and Technology Jiangsu Key Laboratory for Advanced Metallic Materials School of Materials Science and Engineering Southeast University department of Physics City University of Hong Kong School of Materials Science and engineering Tianjin University School of Physics and Microelectronics Zhengzhou University department of Mechanical engineering Research Institute for Advanced Manufacturing The Hong Kong Polytechnic University Center of Electron Microscopy and State Key Laboratory of Silicon Materials School of Materials Science and Engineering Zhejiang University Key Laboratory of Solidification Control and Digital Preparation Technology (liaoning Province) School of Materials Science and Engineering Dalian University of Technology Institute of Advanced Wear & Corrosion Resistance and Functional Materials Jinan University School of mechanics and Civil engineering China University of Mining and Technology School of Physical sciences Great Bay University School of Materials Science andengineering Harbin Institute of Technology State Key Laboratory of Materials-Oriented Chemical engineering College of Chemical Engineering Nanjing Tech University Beijing Advanced Innovation Center for Materials Genome engineering Research Institute for Carbon Neutrality University of Science and Technology Beijing department of Mechanical engineering The University of Hong Kong School of Computing Macquarie University Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Physics and Optoelectronic Engineering Shenzhen University State Key Laboratory for Advanced Metals and Materials University of Science and Technology Beijing State Key Laboratory of Materials Processing and Die & Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Institute of materials Shanghai University department of Materials Science and engineering C

Owing to their exceptional properties, high-entropy alloys(HEAs) and high-entropy materials have emerged as promising research areas and shown diverse applications. Here,the recent advances in the field are comprehensively reviewed,organized into five sections. The first section introduces the background of HEAs, covering their definition, significance,application prospects, basic properties, design principles, and microstructure. The subsequent section focuses on cutting-edge high-entropy structural materials, highlighting developments such as nanostructured alloys, grain boundary engineering,eutectic systems, cryogenic alloys, thin films, micro-nano-lattice structures, additive manufacturing, high entropy metallic glasses, nano-precipitate strengthened alloys, composition modulation, alloy fibers, and refractory systems. In the following section, the emphasis shifts to functional materials, exploring HEAs as catalysts, magneto-caloric materials, corrosion-resistant alloys, radiation-resistant alloys, hydrogen storage systems, and materials for biomedicine. Additionally, the review encompasses functional high-entropy materials outside the realm of alloys, including thermoelectric, quantum dots, nanooxide catalysts, energy storage materials, negative thermal expansion ceramics,and high-entropy wave absorption materials. The paper concludes with an outlook, discussing future directions and potential growth areas in the field. Through this comprehensive review,researchers, engineers, and scientists may gain valuable insights into the recent progress and opportunities for further exploration in the exciting domains of high-entropy alloys and functional materials.

关键词： Cutting-edge structural materials Cutting-edgefunctional materials High entropy alloys

New Family of Exact Solutions and Chaotic Soltions of Generalized Breor-Kaup System in （2＋1）-Dimensions via an Extended Mapping Approach

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Communications in Theoretical Physics 2005年第2X期44卷 203-208页

作者： FANG Jian-Ping ZHENG Chun-long ZHU hai-Ping REN Qing-Bao CHEN Li-Qun department of Physics Zhejiang Lishui University Lishui 323000 China Shanghai Institute of Applied Mathematics and mechanics Shanghai University Shanghai 200072 China

Starting from an extended mapping approach, a new type of variable separation solution with arbitrary functions of generalized (2+1)-dimensional Broer-Kaup system (GBK) system is derived. Then based on the derived sol... 详细信息

关键词： extended mapping approach GBK system exact solution chaotic soliton

Prediction of Load-Displacement Curve of Flexible Pipe Carcass Under Radial Compression Based on Residual Neural Network

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china Ocean engineering 2023年第1期37卷 42-52页

作者： YAN Jun LI Wen-bo Murilo Augusto VAZ LU hai-long ZHANG Heng-rui DU Hong-ze BU Yu-feng State Key Laboratory of Structural Analysis for Industrial Equipment Department of Engineering MechanicsDalian University of TechnologyDalian 116024China Ningbo Research Institute of Dalian university of Technology Ningbo 315016China Ocean engineering Program Federal University of Rio de JaneiroRio de Janeiro 21941-901Brazil

The carcass layer of flexible pipe comprises a large-angle spiral structure with a complex interlocked stainless steel cross-section profile, which is mainly used to resist radial load. With the complex structure of the carcass layer, an equivalent simplified model is used to study the mechanical properties of the carcass layer. However, the current equivalent carcass model only considers the elastic deformation, and this simplification leads to huge errors in the calculation results. In this study, radial compression experiments were carried out to make the carcasses to undergo plastic deformation. Subsequently, a residual neural network based on the experimental data was established to predict the load-displacement curves of carcasses with different inner diameter in plastic states under radial *** established neural network model’s high precision was verified by experimental data, and the influence of the number of input variables on the accuracy of the neural network was discussed. The conclusion shows that the residual neural network model established based on the experimental data of the small-diameter carcass layer can predict the load-displacement curve of the large-diameter carcass layer in the plastic stage. With the decrease of input data, the prediction accuracy of residual network model in plasticity stage will decrease.

关键词： flexible pipe carcass radial compression experiment load−displacement curves residual neural network