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Effect of MR Element Slant Angle on Output Voltage of Magnetoresistive Device

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稀有金属材料与工程 2006年第A03期35卷 586-587页

作者： Y L Jing yu Shi h W Zhang X D Jiang h J Zheng School of Microelectronics and Solid-State Electronics University of Electronics Science and Technology of China Chengdu 610054 China

Correlation between optimum of MR element slant angle and the ratio of magnetic pole length to magnetoresistance element length on linear magnetic encoder is explored in this *** slant angle of MR element is different and increases in proportion to the ratio of magnetic pole length to MR element length by slant multi-phase filtering model.

关键词： magnetic encoder MR element sensor

Microstructure and mechanical properties of AZ61 Mg alloy prepared by multi directional forging

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Transactions of Nonferrous Metals Society of China 2010年第7期20卷 1294-1298页

作者： h. MiURA G. yu X. YANG T. SAKAi Department of Mechanical Engineering and intelligent Systems University of Electro-Communications Chofu Tokyo 182-8585 Japan School of Materials Science and Engineering Central South University Changsha 410083 China

AZ61Mg alloy was multi directionally forged(MDFed) during decreasing temperature condition from 643 K to 483 K at a true strain rate of 3×10-3 s-1 up to cumulative strain of∑△ε=4.0 at maximum.A pass strain of△ε=0.8 was *** average grain size decreased gradually with increasing cumulative strain,the evolution of fine-grained structure strongly depended on the MDF *** the condition where the temperature was higher than the most adequate one,grain coarsening partially took place during *** contrast,at lower temperature,inhomogeneous microstructure composed of the initial coarse and newly appeared fine grains was *** straining over∑△ε=3.2(i.e.,over 4 passes of MDF) ,equiaxed ultrafine grains(UFGs) having average size of about and lower than 1μm were uniformly *** the MDFed alloy to∑△ε=4.0 possessed relatively high hardness of hV 99,and it accepted further about 20%cold rolling almost without *** of the superior formability of the UFGed AZ61Mg alloy,the hardness was further easily raised to hV 120 by following cold rolling.

关键词： AZ61 magnesium alloy ultrafine grain plastic deformation multi directional forging

MEChANiCAL BEhAViOR OF FCC CRYSTAL SiMULATED BY 3-D DiSCRETE DiSLOCATiON DYNAMiCS

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Acta Metallurgica Sinica(English Letters) 2008年第2期21卷 94-102页

作者： Y.yu X.X. Pan Y.h. Rong School of Materials Science and Engineering Shanghai Jiaotong University Shanghai 200030 China institute of Structural Mechanics China Academy of Engineering Physics Mianyang 621900 ChinaManuscript received 31 May 2007

To simulate the mechanical behavior of the FCC crystal with the lower Peierls stress, the stiff property and physical meaning of the differential equation group consisting of dislocation evolution and mechanical state was investigated based on the 3-D discrete dislocation dynamics; the results indicate that the differential equation group is serious stiff, namely the external stress changes more quickly than dislocation evolution. Using the established numerical algorithm, the mechanical behavior of FCC crystal was simulated with the dislocations located in the parallel slip planes, and the effect of strain rate on the dislocation configuration and mechanical behavior, and the sat- uration process of mobile dislocation were discussed. The simulation results indicate that the numerical algorithm can efficiently simulate the dislocation dipole and the low strain rate loading.

关键词： FCC crystal Mechanical behavior Dislocation dynamics Nu-merical simulation

FEATURES　OF　ANNEALiNG　MiCROSTRUCTURE　AND　TEXTURE　iN　Ti－25Al－10Nb－3V－1Mo　ShEET

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中国有色金属学会会刊：英文版 1996年第2期6卷 67-71页

作者： Mao, WM yu, YN Yang, h Song, B Zou, DX Wang, B UNiV SCi & TEChNOL BEiJiNG DEPT MAT SCI & ENGNBEIJING 100083PEOPLES R CHINA MiNiST MET iND DEPT SUPERALLOYCENT IRON & STEEL RES INSTBEIJING 100081PEOPLES R CHINA

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关键词： Ti-25-A1-10Nb-3V-1Mo texture rolling deformation annealing

Modeling Climate Change impacts on the US Agricultural Exports

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Journal of integrative Agriculture 2014年第4期13卷 666-676页

作者： ZhANG yu-quan CAi Yong-xia Beach Robert h McCARL Bruce A Agricultural Resource & Energy Economics and Policy ProgramRTI InternationalResearch Triangle Park Department of Agricultural Economics Texas A&M UniversityCollege Station

Climate change is expected to have substantial effects on agricultural productivity worldwide. however, these impacts will differ across commodities, locations and time periods. As a result, landowners will see changes in relative returns that are likely to induce modifications in production practices and land allocation. in addition, regional variations in impacts can alter relative competitiveness across countries and lead to adjustments in international trade patterns. Thus in climate change impact studies it is likely useful to account for worldwide productivity effects. in this study, we investigate the implications of considering rest of world climate impacts on projections of the US agricultural exports. We chose to focus on the US because it is one of the largest agricultural exporters. To conduct our analyses, we consider four alternative climate scenarios, both with and without rest of world climate change impacts. Our results show that considering/ignoring rest of world climate impacts causes significant changes in the US production and exports projections. Thus we feel climate change impact studies should account not only for climate impacts in the country of focus but also on productivity in the rest of the world in order to capture effects on commodity markets and trade potential.

关键词： climate change relative competitiveness trade agricultural sector model (ASM)

Numerical investigation for effects of natural light and ventilation on 3D tomato body heat distribution in a Venlo greenhouse

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information Processing in Agriculture 2023年第4期10卷 535-546页

作者： Guanghui yu Shanhong Zhang Shuai Li Minshu Zhang hüseyin Benli Yang Wang National innovation Center for Digital Fishery China Agricultural UniversityBeijing 100083China Laboratory of Smart Farming Technologies for Aquatic Animal and Livestock Ministry of Agriculture and Rural AffairsChina Agricultural University100083BeijingChina Engineering and Technology Research Center for internet of Things in Agriculture China Agricultural University100083BeijingChina College of information and Electrical Engineering China Agricultural UniversityBeijing 100083China Department of Technical and Vocational Education Firat UniversityTR-23119 ElazigTurkey for Huseyin Benli

Maintaining suitable temperature level around tomato in the greenhouse is essential for the high-quality ***,in summer,the temperature level around the tomato is usually unclear except using a high-precision temperature *** solve this problem,thermal performance of 3D(three-dimensional)tomato model built based on SolidWorks was investigated by the computational fluid dynamics(CFD)*** assess the effect of temperature distribution around the tomato,a simplified 3D tomato numerical model was firstly validated by a set of field measurement *** light intensity and indoor ventilation were regarded as the mainly environment factors in the Venlo greenhouse,thermal stratification around tomatoes at different time of day was further *** numerical results illustrated the different temperature distribution around tomato body under different radiation *** was found that ventilation could obviously adjust the temperature gradient around the tomato,and alleviate high temperature effect particularly in *** ventilation could create a suitable thermal environment for the tomato *** study clearly demonstrated 3D temperature distribution around tomatoes,which is beneficial to provide the reference for accurate detection of 3D tomato temperature and appropriate thermal environment design.

关键词： CFD 3D Tomato body heat distribution Greenhouse environment Growth condition

NiFeRuO_(x)nanosheets on Ni foam as an electrocatalyst for efficient overall alkaline seawater splitting

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Frontiers of Chemical Science and Engineering 2023年第11期17卷 1698-1706页

作者： yu Liu Lin Chen Yong Wang yuan Dong Liang Zhou Susana iCórdoba de Torresi Kenneth iOzoemena Xiao-yu Yang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing&international School of Materials Science and Engineering&School of Materials Science and Engineering&Shenzhen Research institute&Laoshan Laboratory Wuhan University of TechnologyWuhan 430070China instituto de Química Universidade de São Paulo05508-080 São PauloBrazil Molecular Sciences institute School of ChemistryUniversity of the WitwatersrandJohannesburg 2050South Africa

The electrocatalyst NiFeRuO_(x)/NF,comprised of NiFeRuO_(x)nanosheets grown on Ni foam,was synthesized using a hydrothermal process followed by thermal ***_(x)/NF displays high electrocatalytic activity and stability for overall alkaline seawater splitting:98 mV@10 mA∙cm^(−2)in hydrogen evolution reaction,318 mV@50 mA∙cm^(−2)in oxygen evolution reaction,and a cell voltage of 1.53 V@10 mA∙cm^(−2),as well as 20 h of durability.A solar-driven system containing such a bifunctional NiFeRuO_(x)/NF has an almost 100%Faradaic *** NiFeRuO_(x)coating around Ni foam is an anti-corrosion layer and also a critical factor for enhancement of bifunctional performances.

关键词： NiFeRuO_(x)nanosheets Ni foam electrocatalysis overall seawater splitting solar-driven system

iNFLUENCE OF ThE NONMAGNETiC METAL SPACER ON ThE MAGNETiC PROPERTiES AND MiCROSTRUCTURE OF ThE MULTiLAYER FiLMS

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Acta Metallurgica Sinica(English Letters) 2006年第4期19卷 235-243页

作者： M.h. Li G.h. yu F.W. Zhu h.W. Jiang W.Y. Lai College of Mechanical Engineering South China University of Technology Guangzhou 510640 China Department of Materials Physics University of Science and Technology Beijing Beijing 100083 China Department of Physics Capital Normal University Beijing 100037 China institute of Physics Chinese Academy of Sciences Beijing 100080 China

Ta / NiFe/Bi （ Ag, Cu ）/FeMn/Ta and Ta / NiFe1/FeMn / Bi （ Ag, Cu ）/NiFen/Ta films were prepared by magnetic sputtering. The texture and the dependences of the exchange-coupling field on the thickness of Bi, Ag, and Cu in Ta/NiFe/Bi（Ag, Cu） /FeMn/Ta and Ta/NiFe/FeMn/Bi（Ag, Cu）/NiFe/Ta films were studied. XPS results indicate that the Bi atoms migrated into the FeMn layer during the deposition process and a FeMnBi alloy was probably formed or the Bi atoms existed as an impurity in the FeMn layer in Ta/NiFe/Bi（Ag, Cu ）/FeMn/Ta. Otherwise, in Ta/NiFe/FeMn/Bi （Ag, Cu）/NiFe/Ta films, Bi, Ag, and Cu atoms do not remain entirely at the interface of the FeMn/ NiFeⅡfilm, but at least partly segregate to the surface of the NiFe film.

关键词： NiFe/FeMn nonmagnetic spacer exchange coupling XPS (X-ray photoelectron spectroscopy)

Tensile and shearing behaviors of the particle raft

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Acta Mechanica Sinica 2021年第6期37卷 904-909,I0001页

作者： P.C.Zuo h.yu J.L.Liu Z.J.Wen College of Pipeline and Civil Engineering China University of Petroleum(East China)Qingdao266580China School of Science China University of Petroleum(East China)Qingdao266580China Key Laboratory of Mining Disaster Prevention and Control Shandong University of Science and TechnologyQingdao266590China

The particle raft is a two-dimensional condensed soft matter,which is composed of hydrophobic solid particles floating on a liquid *** this study,we have realized to conduct tension and shear experiments on the particle raft by using the self-assembled loading *** crack initiation and propagation are observed by the camera,and the curve of the non-dimensional force with respect to the displacement is *** experimental results have been compared with the particle flow code 3D(PFC3D)simulation,and they are in excellent *** indicates that the particle raft possesses mechanical properties between solid and *** findings provide some inspirations on engineering new devices and new materials at the microscale.

关键词： Particle raft Tension Shear Crack Force–displacement curve