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Amorphous electrocatalysts for urea oxidation reaction

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progress in Natural Science:Materials International 2024年第2期34卷 362-375页

作者： Fenghui Guo Dongle cheng Qian Chen Hao Liu Zhiliang Wu Ning Han Bing-Jie Ni Zhijie Chen School of Materials Science and technology China University of Geosciences Shenzhen Academy of Metrology and Quality Inspection Centre for technology in Water and Wastewater School of Civil and Environmental Engineering University of Technology Sydney College of Safety and Environmental engineering Shandong University of Science and Technology Institute of Yellow river Delta Earth Surface processes and Ecological Integrity Shandong University of Science and Technology Discipline of Chemical engineering Western Australian School of Mines: Minerals Energy and Chemical Engineering Curtin University department of Materials engineering School of civil and Environmental engineering The University of New South Wales

Electrochemical urea oxidation reaction(UOr) is a promising alternative to oxygen evolution reaction(OEr) for realizing energy-saving hydrogen production. Developing efficient electrocatalysts for UOr becomes a central challenge. recently, amorphous materials have been extensively used as UOr catalysts because of their numerous defective sites and flexible electronic properties. In this review, recent advancements in the development of amorphous UOr electrocatalysts are analyzed. The UOr mechanism is discussed, and the design of amorphous catalysts is then analyzed. The main catalyst design strategies are illustrated, including nanostructure control,heteroatom doping, composition regulation, and heterostructure construction. Also, electrocatalysts' structureperformance correlation is interpreted. perspectives in this field are proposed for guiding future studies on the development of high-performance amorphous catalysts towards energy sustainability.

关键词： Catalyst design Hydrogen energy Heterostructures Heteroatom doping Component regulation

Feasibility Study for the Application of Air Inflated Membrane Structure in china National Stadium

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Journal of Shanghai Jiaotong university(Science) 2010年第3期15卷 267-272页

作者：龚景海杨秀英张子兆赵金城 department of civil {2. Shanghai Jiaotong University

china National Stadium,also known as "Bird's Nest",is the main stadium of the 2.th Olympic Games in Beijing in 2.08,which has successfully held not only the Opening and the Closing ceremonies but also the track and field events.A new problem of rain preventing is brought out to improve the utilization of the Bird's Nest after the Olympic *** scheme of installing an air inflated membrane at the opening of the steel structure is proposed in this paper to solve the rainproof problem of the Bird's *** form-finding and mechanical analyses of the air inflated membrane are carried *** between the mechanical performance and dynamical character before and after installing the air inflated membrane structure is *** verify the analysis results,based on the practical structure of the Bird's Nest,a test of a 1:2. model membrane is worked out.

关键词： china National Stadium rain proofing air inflated membrane model test

Enhancement of flux pinning in GdBa_2.u_3O_(7-y) bulks prepared by nanoparticle-powder-assisted method

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Journal of Modern Transportation 2011年第2期19卷 104-109页

作者： C.H. cheng Chang chun HSIEH Chuan KE H. ZHANG C.C. SOrrELL Superconductivity research Group School of Materials Science and Engineering University of New South Wales Sydney 2052 NSW Australia Key Laboratory for Levitation technology and Maglev Trains Ministry of Education of China Superconductivity and New Energy Center （SNEC） Southwest Jiaotong University Chengdu 610031 China department of physics Peking University Beijing 100871 China

High quality GdBa2.u307-y （Gd12.） textured bulks with Nd2.aCuO5 （Nd2.1） nanoparticle precipitations have been fabricated by a nanoparticle-powders-assisted MTG （melt-textured-growth） technique. The high density nanoscale flux pinning sites were introduced into Gd12. by mixing Nd2.1 nanoparticle powders （about 2.-50 nm） with Gd12. nano-precursors before the MTG process. Microstructural analyses reveal that a large number of Nd2.1 nanoparticles with a size around 50-150 nm were inserted in the Gd12. matrix, forming a kind of superconducting nanocomposites. The critical current density at 77 K is systematically increased and the flux pinning behavior is significantly improved. The scaling behavior of the flux pinning force shows a magnetic field dependent feature with a peak located at hp≈0.4. This may be the fingerprint of melt-textured 12. compounds, which cannot be interpreted by the simple superposition of different types of elementary pinning sources.

关键词： flux pinning GdBa2.u307-y nanoparticle-powder assisted processing critical current density

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弹性层状半平面的位移不连续基本解

上海交通大学学报 2009年第10期43卷 1676-1680页

作者：王飞董越鹏黄醒春上海交通大学土木工程系上海200240

为了得到弹性层状半平面的位移不连续基本解,从平面应变条件下的弹性力学基本方程出发,利用Airy应力函数并采用Fourier积分变换求解方程,得到了各层之间的传递矩阵和弹性半无限空间的刚度矩阵表达式.在求得传递矩阵和刚度矩阵的基础上,... 详细信息

为了得到弹性层状半平面的位移不连续基本解,从平面应变条件下的弹性力学基本方程出发,利用Airy应力函数并采用Fourier积分变换求解方程,得到了各层之间的传递矩阵和弹性半无限空间的刚度矩阵表达式.在求得传递矩阵和刚度矩阵的基础上,结合边界条件及各层间的连续性条件求解,再进行Fourier反变换,得到弹性含任意多层的半平面中直线段上作用均匀分布法向或切向不连续位移的基本解.通过与己有的弹性半平面位移不连续基本解进行对照,验证了推导的正确性,并给出了一个数值算例.结果表明:传递矩阵-刚度矩阵法解决层状问题简单有效;积分变换方法是求基本解问题的一种理想的方法.

关键词：弹性层状半平面位移不连续法基本解 Fourier变换

Designing electrodes and electrolytes for batteries by leveraging deep learning

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Nano research Energy 2024年第2期3卷 83-99页

作者： Chenxi Sui Ziyang Jiang Genesis Higueros David Carlson po-chun Hsu pritzker School of Molecular engineering University of ChicagoChicagoIL 60637USA civil and Environmental engineering Duke UniversityDurhamNC 27708USA Thomas Lord department of Mechanical engineering and Materials Science Duke UniversityDurhamNC 27708USA

High-performance batteries are poised for electrification of vehicles and therefore mitigate greenhouse gas emissions,which,in turn,promote a sustainable ***,the design of optimized batteries is challenging due to the nonlinear governing physics and *** advancements have demonstrated the potential of deep learning techniques in efficiently designing batteries,particularly in optimizing electrodes and *** review provides comprehensive concepts and principles of deep learning and its application in solving battery-related electrochemical problems,which bridges the gap between artificial intelligence and *** also examine the potential challenges and opportunities associated with different deep learning approaches,tailoring them to specific battery ***,we aim to inspire future advancements in both fundamental scientific understanding and practical engineering in the field of battery ***,we highlight the potential challenges and opportunities for different deep learning methods according to the specific battery demand to inspire future advancement in fundamental science and practical engineering.

关键词： battery design fast-charging battery three-dimensional(3D)structure deep learning optimization

Special Issue on the recent Trends of GeoAI Techniques for SDGs

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Journal of Geodesy and Geoinformation Science 2024年第1期7卷 1-2页

作者： FAN Hongchao MENG Liqiu cheng Tao department of civil and Environmental {2. Norwegian University of Science and TechnologyTrondheim 7034Norway Chair of Cartography and Visual Analgtics TU MunichMunich 80333Germany SpaceTimeLab Department of CivilEnvironmental and Geomatic EngineeringUniversity College LondonLondon WCIE 6BTUK

reliable and up-to-date geospatial data plays a fundamental role in Sustainable Development Goals(SDGs)*** to providing such geospa-tial data,numerous algorithms,solutions and frame-works have been developed in recent years.A mong oth-ers,A rtificial Intelligence(AI)based techniques have been widely used for the tasks of processing geospatial ***,this topic is blooming so fast and to a vast extent in the field of Geomatics that a new subdo-main seems to arise,namely GeoAI[1-2..Even for a very quick and brief glance inthe Internet,people can find a lot of applications,projects,blogs and research articles about GeoAI,w hereas new approaches to GeoAI have been proposed and tested.

关键词： Intelligence SDGs Sustainable

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基于FFT的海底地形二维匹配技术

系统仿真学报 2008年第21期20卷 5795-5797,5832页

作者：于家城陈家斌贺鹏宋春雷华北科技学院电子信息工程系北京101601 北京理工大学信息科学技术学院自动控制系北京100081 上海工程技术大学城市轨道交通学院上海201620

海底地图匹配技术是水下地形辅助导航的核心技术之一,它主要用来提高水下载体(AUV)的定位精度,提出了基于付立叶变换的海底地形二维匹配算法(FFT算法),通过FFT变换将频域中幅值引入匹配,设计了位置匹配圆板进行实时图位置匹配与方向搜... 详细信息

海底地图匹配技术是水下地形辅助导航的核心技术之一,它主要用来提高水下载体(AUV)的定位精度,提出了基于付立叶变换的海底地形二维匹配算法(FFT算法),通过FFT变换将频域中幅值引入匹配,设计了位置匹配圆板进行实时图位置匹配与方向搜索模板进行方向搜索。应用实际海图原始数据进行仿真,结果表明,该算法能够同时匹配出位置信息和方向信息,具有较高的匹配精度和抗差特性。

关键词：地形匹配快速付立叶变换位置匹配圆板参考地图

Analytical Solutions to Strain rates of reinforced Concrete Simply Supported Slabs under Blast Loads

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Journal of Southwest Jiaotong university(English Edition) 2009年第3期17卷 212-217页

作者：孙文彬 WU cheng—qing department of civil {2. Hnaiyin Institute of Technology Huaian 223001 China School of civil Environmental and Mining Engineering The University of Adelaide SA5005 Australia

Based on the Duhamel integral, a couple of analytical solutions are derived to predict the strain rates of concrete and steel reinforcement in reinforced concrete slabs under blast loads and to estimate their variation over depth of a cross-section along the entire length of the member. The analytical approach utilizes the single-degree-of-freedom mode for the analysis of reinforced concrete simply supported one-way panels subjected to blast loads. These analytical solutions can give the strain rate profile for any cross-section at any time and permit variations of strain rate in each time step of numerical iteration method, thus making it possible to directly incorporate strain rate effects into non-linear dynamic response analysis of structural members subjected to blast loads.

关键词： reinforced concrete Simply supported slab Blast load SDOF Duhamel integral Strain rate Analytical solution

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空间刚架结构的广义逆力法

力学季刊 2004年第1期25卷 38-45页

作者：刘西拉王开健张春俊上海交通大学土木工程系上海200030 北京清华大学土木工程系北京100084 中元国际工程设计研究院北京100089

在结构计算中,根据算法中所采用的基本未知量的不同,结构分析方法可以分为力法、位移法和混合法。其中位移法由于适宜计算机处理而在结构计算领域得到了广泛的应用,经典力法相比之下应用就远不如位移法普遍,虽然力法本身在力学上有其独... 详细信息

在结构计算中,根据算法中所采用的基本未知量的不同,结构分析方法可以分为力法、位移法和混合法。其中位移法由于适宜计算机处理而在结构计算领域得到了广泛的应用,经典力法相比之下应用就远不如位移法普遍,虽然力法本身在力学上有其独特的优势。广义逆矩阵做为一种较新的数学工具,自二十世纪五十年代诞生以来正日益表现出越来越旺盛的生命力。广义逆力法就是一种基于力法和广义逆矩阵理论的新的迭代算法。这种算法是一种完全适合计算机处理的力法方法。该算法的思路以及对于求解线弹性空间刚架结构问题的具体公式均在文中给出并给出了算例。从算例计算结果可以看到广义逆力法有着较好的计算效率和计算精度。该算法的提出为力法在计算机计算领域的应用开拓了新的发展空间。该算法在材料非线性问题和结构并行计算方面也有着较好的应用前景。

关键词：广义逆矩阵广义逆力法空间刚架结构结构计算结构分析结构力学