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World Journal of Mechanics 2012年第2期2卷 61-76页

作者： A. R. Maligno D. C. Whalley v. v. Silberschmidt Wolfson School of Mechanical and Manufacturing Engineering Loughborough University Loughborough UK

This paper is concerned with the application of a Physics of Failure (PoF) methodology to assessing the reliability of Micro-Electro-Mechanical-System (MEMS) switches. Numerical simulations, based on the finite element method (FEM) using a sub-domain approach, were performed to examine the damage onset (e.g. yielding) due to temperature variations and to simulated the crack propagation different kind of loading conditions and, in particular, thermal fatigue. In this work remeshing techniques were employed in order to understand the evolution of initial flaws due, for instance, to manufacturing processes or originated after thermal fatigue.

关键词： Sub-Domain FEM Thermal Fatigue Adaptive Remeshing

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走近X(3872)共振态的本质（英文）

中国科学技术大学学报 2016年第7期46卷 574-579页

作者： ACHASOv N.N. ROGOZINA E.v. 索博列夫数学学院理论物理实验室新西伯利亚州立大学

构造了具有良好解析性和幺正性的共振态X(3872)衰变谱,能够定义衰变反应X(3872)→D*0D0+c.c.的分支比,而只需要多研究另外一个衰变,比如说X(3872)→π+π-J/ψ(1 S)衰变,这表明构造谱是筛选共振态X(3872)模型的有效工具.之后讨论了共振... 详细信息

构造了具有良好解析性和幺正性的共振态X(3872)衰变谱,能够定义衰变反应X(3872)→D*0D0+c.c.的分支比,而只需要多研究另外一个衰变,比如说X(3872)→π+π-J/ψ(1 S)衰变,这表明构造谱是筛选共振态X(3872)模型的有效工具.之后讨论了共振态X(3872)是粲偶素c珋c=χ0c1(2P)的情形,此时它处在D*D0的阈上.根据由粲偶素χc1(2P)的质量的势能模型的预言解释了共振态X(3872)的质量偏移.这个势能模型是依据衰变产物D*D+c.c.的中间态计入共振态X(3872)的质量的贡献而构造的.这使得我们能够研究共振态X(3872)和衰变道D*0D0的耦合常数,X(3872)*→D 0D0+c.c.的衰变分支比以及共振态X(3872)衰变到所有不含D*0D0+c.c.的过程的分支比.预言了一个共振态X(3872)通过双胶子衰变的重要常数.

关键词：粲偶素分子双胶子衰变

Evaluation of self-healing properties of inhibitor loaded nanoclay-based anticorrosive coatings on magnesium alloy AZ91D

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Journal of Magnesium and Alloys 2018年第3期6卷 299-308页

作者： Swapnil H.Adsul K.R.C.Soma Raju B.v.Sarada Shirish H.Sonawane R.Subasri Centre for Sol-Gel Coatings International Advanced Research Centre for Powder Metallurgy and New Materials(ARCI)BalapurHyderabad 500005TelanganaIndia Centre for Solar Energy Materials International Advanced Research Centre for Powder Metallurgy and New Materials(ARCI)BalapurHyderabad 500005TelanganaIndia Department of Chemical Engineering National Institute of TechnologyWarangal 506004TelanganaIndia

This study emphasizes on the evaluation and comparison of the anticorrosive properties of sol-gel coatings with and without inhibitor loaded *** this case,naturally available clay nanotubes(halloysite)were loaded with cationic corrosion inhibitors Ce 3+/Zr 4+.These nanocontainers were dispersed in hybrid organic-inorganic sol-gel matrix *** was applied on magnesium alloy AZ91D using the sols containing modified and unmodified nanocontainers employing the dip coating method and cured at 130℃for 1 h in *** resistance of coated/uncoated substrates were analyzed using electrochemical impedance spectroscopy,potentiodynamic polarization and weight loss measurements after exposure to 3.5 wt%NaCl solution for varying time durations between 24 h to 120 ***-healing ability of coatings was evaluated by micro-Raman spectroscopy after 120 h exposure to 3.5 wt%NaCl *** generated after dispersion of corrosion inhibitor loaded clay in hybrid sol-gel matrix have shown more promising corrosion resistance when compared to just the sol-gel matrix coatings,after prolonged exposure to corrosive environment.

关键词： Self-healing coating Halloysite nanoclay Cationic corrosion inhibitors Magnesium alloy AZ91D Micro-Raman spectroscopy Corrosion protection

Cattle behaviour classification from collar, halter, and ear tag sensors

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Information Processing in Agriculture 2018年第1期5卷 124-133页

作者： A.Rahman D.v.Smith B.Little A.B.Ingham P.L.Greenwood G.J.Bishop-Hurley Analytics Program Data61CSIROAustralia Productive and Adaptive Livestock Systems Agriculture and FoodCSIROAustralia NSW Department of Primary Industries Beef Industry Centre Australia

In this paper,we summarise the outcome of a set of experiments aimed at classifying cattle behaviour based on sensor *** animal carried sensors generating time series accelerometer data placed on a collar on the neck at the back of the head,on a halter positioned at the side of the head behind the mouth,or on the ear using a *** purpose of the study was to determine how sensor data from different placement can classify a range of typical cattle *** were collected and animal behaviours(grazing,standing or ruminating)were observed over a common time *** features were computed from the sensor data and machine learning algorithms were trained to classify each *** accuracies were computed on separate independent test *** analysis based on behaviour classification experiments revealed that different sensor placement can achieve good classification accuracy if the feature space(representing motion patterns)between the training and test animal is *** paper will discuss these analyses in detail and can act as a guide for future studies.

关键词： Sensor data analytics Cattle behaviour classification Sensors for cattle behaviour tracking

Pediatric functional constipation treatment with Bifi dobacterium-containing yogurt:A crossover,double-blind,controlled trial

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World Journal of Gastroenterology 2011年第34期17卷 3916-3921页

作者： Paula vP Guerra Luiza N Lima Tassia C Souza vanessa Mazochi Francisco J Penna Andreia M Silva Jacques R Nicoli Elizabet v Guimares Departamento de Pediatria Faculdade de Medicina Universidade Federal de Minas Gerais30130-100 Belo Horizonte MG Brazil Departamento de Micro-biologia Instituto de Ciências Biológicas Universidade Federalde Minas Gerais32270-901 Belo Horizonte MG Brazil Andreia M Silva Universidade Federal deSo Joo del Rei Campus de Sete Lagoas35701-970 So Joodel Rey MG Brazil

AIM: To evaluate the treatment of pediatric functional chronic intestinal constipation (FCIC) with a probiotic goat yogurt. METHODS: A crossover double-blind formula-controlled trial was carried out on 59 students (age range: 5-15 years) of a public school in Belo Horizonte, MG, Brazil, presenting a FCIC diagnostic, according to Roma Ⅲ criteria. The students were randomized in two groups to receive a goat yogurt supplemented with 109 colony forming unit/mL Bifidobacterium longum (***) (probiotic) daily or only the yogurt for a period of 5 wk (formula). Afterwards, the groups were intercrossed for another 5 wk. Defecation frequency, stool consistency and abdominal and defecation pain were ***: Both treatment groups demonstrated improvement in defecation frequency compared to baseline. However, the group treated with probiotic showed most signif icant improvement in the f irst phase of the study. An inversion was observed after crossing over, resulting in a reduction in stool frequency when this group was treated by formula. Probiotic and formula improved stool consistency in the f irst phase of treatment, but the improvement obtained with probiotic was significantly higher (P = 0.03). In the second phase of treatment, the group initially treated with probiotic showed worseningstool consistency when using formula. However, the difference was not signif icant. A signif icant improvement in abdominal pain and defecation pain was observed with both probiotic and formula in the first phase of treatment, but again the improvement was more signif icant for the group treated with B. longum during phase I (P ver study were analyzed, significant differences were observed between probiotic yogurt and yogurt only for defecation frequency (P = 0.012), defecation pain (P = 0.046) and abdominal pain (P = 0.015).

关键词： Functional chronic constipation Probiotic Bifi dobacterium longum Yogurt Adolescents Children

Online Capacitance Modeling Tool for Conductors Represented as Simply-Connected Polygonal Geometries in 2D

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Journal of Sensor Technology 2012年第3期2卷 155-163页

作者： Fengyuan Li Jason v. Clark School of Electrical and Computer Engineering Purdue University West Lafayette USA School of Mechanical Engineering and Birck Nanotechnology Center Purdue University West Lafayette USA

We present an online tool for calculating the capacitance between two conductors represented as simply-connected polygonal geometries in 2D with Dirichlet boundaries and homogeneous dielectric. Our tool can be used to model the so-called 2.5D geometries, where the 3rd dimension can be extruded out of plane. Micro-electro-mechanical systems (MEMS) with significant facing surfaces may be approximated with 2.5D geometry. Our tool compares favorably in accuracy and speed to the finite element method (FEM). We achieve modeling accuracy by treating the corners exactly with a Schwarz-Christoffel mapping. And we achieve fast results by not needing to discretize boundaries and subdomains. As a test case, we model a MEMS torsional actuator. Our tool computes capacitance about 1000 times faster than FEM with 4.7% relative error.

关键词： Capacitance Conformal Mapping Online Modeling and Simulation Tool Schwarz-Christoffel Mapping

基于剪切模量和热分析数据研究Zr_(50-x)Cu_(34)Ag_(8)Al_(8)Pd_(x)(x=0,2)非晶合金缺陷浓度演化

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物理学报 2021年第14期70卷 266-274页

作者：程怡婷 Andrey S.Makarov Gennadii v.Afonin vitaly A.Khonik 乔吉超西北工业大学力学与土木建筑学院西安710072 Department of General Physics Voronezh State Pedagogical UniversityVoronezh 394043Russia

非晶合金具有独特物理和力学性能,如何建立非晶合金微观结构非均匀性与物理/力学性能之间的关联是非晶固体的重要研究课题之一.微合金化是调控非晶合金微观结构有效手段之一.本研究以玻璃形成能力优异的Zr_(50-x)Cu_(34)Ag_(8)Al_(8)Pd_... 详细信息

非晶合金具有独特物理和力学性能,如何建立非晶合金微观结构非均匀性与物理/力学性能之间的关联是非晶固体的重要研究课题之一.微合金化是调控非晶合金微观结构有效手段之一.本研究以玻璃形成能力优异的Zr_(50-x)Cu_(34)Ag_(8)Al_(8)Pd_(x)(x=0,2)非晶合金为模型合金,借助差示扫描量热仪和电磁声转换设备,研究非晶合金铸态、弛豫态和结晶态热流和剪切模量随温度的演化规律,以及物理时效(低于玻璃转变温度)过程剪切模量的变化随时间演化规律.基于自间隙原子理论,利用热流曲线表征非晶合金在相同热历史剪切模量热效应.通过分析铸态和弛豫态自间隙缺陷浓度和激活能谱,发现结构弛豫导致自间隙缺陷浓度减小,诱导剪切模量随温度演化偏离软化过程,并伴随体系放热.与此同时,研究发现添加微量Pd元素可抑制模型合金体系原子迁移,增加特征弛豫时间.本研究从非晶合金模量热效应角度进一步理解非晶合金微观结构非均匀性.

关键词：非晶合金缺陷浓度剪切模量微观结构非均匀

Study of the Electric Filed Around a Metal Oxide Surge Arrester： Measurement and Simulation

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高电压技术 2013年第8期39卷 2014-2021页

作者： Christodoulou C A Spanias C A Kontargyri v T Gonos I F Stathopulos I A High voltage Laboratory School of Electrical and Computer Engineering National Technical University of Athens Iroon Polytechneiou 9 15780 Zografou Campus Athens Greece

The study of the electric field around a surge arrester is useful for design procedures and diagnostic tests. The current work com- putes the electric field around a medium voltage gapless surge arrester using 2D and 3D representation of the arrester. The 2D simulation design, which is described in IEC 60099-4 Standard, cannot include the non symmetrical parts of the arrester geometry and the test arrange- ment. 3D simulation procedures have the advantage that takes into account these asymmetries, giving more accurate results for each measurement position. In order to confirm the suitability of the created models, the simulation results of the electric field, using the 2D and 3D edition of PC Opera, are compared with recorded measurements, which are obtained in laboratory using appropriate calibrated field meters.

关键词：金属氧化物避雷器测量位置仿真设计电动诊断测试模拟程序设计程序不对称性

固体聚合物电解质对质子交换膜燃料电池反应器的“电生”加氢特性的影响

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化工学报 2004年第5期55卷 833-836页

作者：马紫峰袁晓姿和庆钢 J Hagen v M Schmidt 上海交通大学化工系上海200240 Institute fr Technische Chemie Fachhochschule Mannheim

Effect of some solid polymer electrolyte membranes,Nafion,Gore and Fuma membrane,on the electro-generative hydrogenation behavior of the PEMFC reactor was *** membrane has demonstrated much better performance for the electro-generative hydrogenation of organic acids and enols than Gore and Fuma *** Nafion membrane,the thickness and strength both influence the hydrogenation of organic acids and enols.

关键词： PEMFC 反应器固体聚合物电解质电生加氢

Contradictions between 3-phase region eutectical and peritectical fragments borders determination methods in monographs by *** and ***

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广东有色金属学报 2005年第2期15卷 174-178页

作者： Lutsyk v.I. vorob’eva v.P. Zyryanov A.M. Buryat Scientific Center Russian Academy of Sciences Ulan-Ude 670047 Russia

Phase diagrams are very effective instrument for elaboration of new materials. Computer technologies give a possibility with their help to design microstructure of multicomponent heterogeneous materials[1].

关键词：金属材料金属组织金相学分析固相