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Effect of Texture on the Grain-Size-Dependent Functional Properties of NiTi Shape memory Alloys and Texture Gradient Design:A Phase Field Study

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Acta mechanica Solida Sinica 2024年第1期37卷 10-32页

作者： Bo Xu Beihai huang Chong Wang Qingyuan Wang Failure mechanics and Engineering Disaster Prevention Key Laboratory of Sichuan ProvinceSichuan UniversityChengdu 610065China Department of mechanical Science and Engineering College of Architecture and EnvironmentSichuan UniversityChengdu 610065China Key Laboratory of Deep Underground Science and Engineering Ministry of EducationSichuan UniversityChengdu 610065China

Texture is inevitably introduced during the manufacturing of most NiTi shape memory alloys(SmAs),and the textured nanocrystalline NiTi has been extensively employed in ***,the effect of texture,and the joint effect of grain size(GS)and texture on the functional properties of NiTi SmAs and the corresponding microscopic mechanisms have not been clearly understood *** this work,based on the phase field method,the effect of texture on the GS-dependent functional properties of NiTi SmAs,including super-elasticity(SE),one-way shape memory effect(OWSmE),and stress-assisted two-way shape memory effect(SATWSmE),is investigated,and the corresponding microscopic mechanisms are ***,the samples with discrete geometrical gradients and/or texture gradients are designed to achieve graded functional *** simulation results indicate that the dependence of functional properties on texture is due to the effect of crystallographic orientation on martensite transformation and reorientation,which can lead to different inelastic *** the designed samples with texture gradients,the stress–strain responses of sheets with various textures are different,allowing for the coordination of overall deformation of the sample by combining such sheets,with varying inelastic deformation ***,the overall response of the sample differs from that without texture gradient,leading to the achievement of graded functional *** simulation results and new findings in this work contribute to a deeper understanding of the effects of texture,GS,and their interaction on the functional properties of SmAs,and provide valuable reference for the design and development of SmA-based devices with desired functional properties.

关键词： Phase field NiTi shape memory alloy Texture Grain size Functional property Texture gradient

Synergistic Tuning of Nickel Cobalt Selenide@Nickel Telluride Core-Shell heteroarchitectures for Boosting Overall Urea Electrooxidation and Electrochemical Supercapattery

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Energy & Environmental materials 2024年第1期7卷 301-312页

作者： Diab Khalafallah Weibo huang mingjia Zhi Zhanglian hong State Key Laboratory of Silicon material School of Materials Science and EngineeringZhejiang University38 Zheda RoadHangzhou 310027China mechanical Design and materials Department Faculty of Energy EngineeringAswan UniversityP.O.Box 81521AswanEgypt

herein,we demonstrate the synthesis of bifunctional nickel cobalt selenide@nickel telluride(Ni_(x)Co_(12-x)Se@NiTe)core-shell heterostructures via an electrodeposition approach for overall urea electrolysis and *** 3D vertically orientated NiTe dendritic frameworks induce the homogeneous nucleation of 2D Ni_(x)Co_(12-x)Se nanosheet arrays along similar crystal directions and bring a strong interfacial binding between the integrated active *** particular,the optimized Ni_(6)Co_(6)Se@NiTe with an interface coupling effect works in concert to tune the intrinsic *** only needs a low overpotential of 1.33 V to yield a current density of 10 mA cm^(-2)for alkaline urea ***,the full urea catalysis driven only by Ni_(6)Co_(6)Se@NiTe achieves 10 mA cm^(-2)at a potential of 1.38 V and can approach a constant level of the current response for 40 ***,the integrated Ni_(6)Co_(6)Se@NiTe electrode delivers an enhanced specific capacity(223 mA h g^(-1)at 1 A g^(-1))with a high cycling ***,a hybrid asymmetric supercapacitor(hASC)device based on Ni_(6)Co_(6)Se@NiTe exhibits a favorable rate capability and reaches a high energy density of 67.7 Wh kg^(-1)and a power density of 724.8 W kg^(-1)with an exceptional capacity retention of 92.4%after sequential 12000 cycles at 5 A g^(-1).

关键词： bifunctional Ni_(x)Co_(12-x)Se@NiTe core-shell electrodeposition heterointerfaces supercapacitors UOR

Effect of samarium doping on the activity and sulfur resistance of Ce/mnFeO_(x) catalyst for low-temperature selective catalytic reduction of NO_(x) by ammonia

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Chinese Journal of Chemical Engineering 2024年第7期71卷 272-282页

作者： Qiyao Zhang Shuangshuang Zhang Xu hu Yongmin huang Key Laboratory of Specially Functional Polymeric materials and Related Technology School of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai 200237China

The self-made mnFeO_(x) catalysts doped with cerium and samarium were prepared by impregnation method for low-temperature selective catalytic reduction(SCR)by *** this work,the surface properties of the series of mnFe-based catalysts were *** results indicate Sm-modified catalyst have superior low-temperature SCR activity;NO_(x) conversion maintained at nearby to 100%at 90℃ to 240℃.In addition,The N_(2) selectivity of Sm doping remains above 80%in the range of 60℃ to 150℃.In SO_(2) poisoning test,the NO_(x) conversion can be remained>90%after 10 h of *** XPS,Nh_(3)-TPD and h_(2)-TPR results show the catalyst with Sm doping enhances the acid sites and oxidation catalytic sites of mixed oxides serves for improving oxygen vacancies and transfer *** situ diffuse reflaxions infrared Fourier transformations spectroscopy(DRIFTS)results show that NO_(x) is more easily adsorbed on the surface after Sm doping,which provided favorable conditions for the Nh_(3)-SCR reaction to *** reaction at the catalyst surface will follow the L-h reaction mechanism by transient reaction test.

关键词： SCR Sm doping Catalyst Sulfur resistance In situ DRIFTS Selectivity

Accelerated Primal-Dual Projection Neurodynamic Approach With Time Scaling for Linear and Set Constrained Convex Optimization Problems

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IEEE/CAA Journal of Automatica Sinica 2024年第6期11卷 1485-1498页

作者： You Zhao Xing he mingliang Zhou Tingwen huang Chongqing Key Laboratory of Nonlinear Circuits and Intelligent Information Processing College of Electronic and Information EngineeringSouthwest UniversityChongqing 400715China School of Computer Science Chongqing UniversityChongqing 400044China Department of mathematics Texas A&M University at QatarDoha 23874Qatar IEEE

The Nesterov accelerated dynamical approach serves as an essential tool for addressing convex optimization problems with accelerated convergence *** previous studies in this field have primarily concentrated on unconstrained smooth con-vex optimization *** this paper,on the basis of primal-dual dynamical approach,Nesterov accelerated dynamical approach,projection operator and directional gradient,we present two accelerated primal-dual projection neurodynamic approaches with time scaling to address convex optimization problems with smooth and nonsmooth objective functions subject to linear and set constraints,which consist of a second-order ODE(ordinary differential equation)or differential conclusion system for the primal variables and a first-order ODE for the dual *** satisfying specific conditions for time scaling,we demonstrate that the proposed approaches have a faster conver-gence *** only requires assuming convexity of the objective *** validate the effectiveness of our proposed two accel-erated primal-dual projection neurodynamic approaches through numerical experiments.

关键词： Accelerated projection neurodynamic approach lin-ear and set constraints projection operators smooth and nonsmooth convex optimization time scaling.

Free-walking:Pedestrian inertial navigation based on dual foot-mounted ImU

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Defence Technology（防务技术） 2024年第3期33卷 573-587页

作者： Qu Wang meixia Fu Jianquan Wang Lei Sun Rong huang Xianda Li Zhuqing Jiang Yan huang Changhui Jiang School of Automation Science and Electrical Engineering University of Science and Technology BeijingBeijing100083China Shunde Innovation School University of Science and Technology BeijingFo Shan528399China Research Institute of China Unicom Beijing100190China School of Artificial Intelligence Beijing University of Posts and TelecommunicationsBeijing100876China Department of Automation Tsinghua University Beijing100084China GEOLOC Laboratory Universite Gustave EiffelParis77454France

The inertial navigation system(INS),which is frequently used in emergency rescue operations and other situations,has the benefits of not relying on infrastructure,high positioning frequency,and strong real-time ***,the intricate and unpredictable pedestrian motion patterns lead the INS localization error to significantly diverge with *** paper aims to enhance the accuracy of zero-velocity interval(ZVI)detection and reduce the heading and altitude drift of foot-mounted INS via deep learning and equation constraint of dual *** at the observational noise problem of low-cost inertial sensors,we utilize a denoising autoencoder to automatically eliminate the inherent *** at the problem that inaccurate detection of the ZVI detection results in obvious displacement error,we propose a sample-level ZVI detection algorithm based on the U-Net neural network,which effectively solves the problem of mislabeling caused by sliding *** at the problem that Zero-Velocity Update(ZUPT)cannot suppress heading and altitude error,we propose a bipedal INS method based on the equation constraint and ellipsoid constraint,which uses foot-to-foot distance as a new observation to correct heading and altitude *** conduct extensive and well-designed experiments to evaluate the performance of the proposed *** experimental results indicate that the position error of our proposed method did not exceed 0.83% of the total traveled distance.

关键词： Indoor positioning Inertial navigation system(INS) Zero-velocity update(ZUPT) Internet of things(IoTs) Location-based service(LBS)

DFT investigation of half-metallic ferromagnetic rare earth based spinels mgho_(2)Z_(4)(Z=S,Se)

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Journal of Rare Earths 2024年第1期42卷 121-128,I0005页

作者： maiza Zanib mumtaz manzoor N.A.Noor m.Waqas Iqbal mazia Asghar h.h.hegazy A.Laref Department of Physics Riphah International UniversityLahore CampusPakistan Research Centre for Advanced materials Science King Khalid UniversityP.O.Box 9004AbhaSaudi Arabia Department of Physics Faculty of ScienceKing Khalid UniversityP.O.Box 9004AbhaSaudi Arabia Department of Physics and Astronomy College of ScienceKing Saud UniversityRiyadh11451Saudi Arabia

half-metallic ferromagnetism,mechanical as well as thermoelectric properties for rare earth-based spinels mgho_(2)Z_(4)(Z=S,Se)were investigated using density functional theory(DFT).Structural optimization was done with Perdew-Burke-Ehrenzorf(PBE)sol-generalized gradient approximation(GGA)to calculate the lattice constant of both spinels comparable to experimental *** addition,Born stability criteria and negative formation energy show that our studied spinels are also structurally and dynamically stable in the cubic *** ferromagnetic(Fm)state stability,we also calculated the energy differences among Fm,antiferromagnetic(AFm),and non-magnetic(Nm)***,Curie temperatures of ferromagnetic phases were also *** used Trans-Blaha improved BeckeJohnson(TB-mBJ)potential functional for electronics as well as magnetic characteristics,which lead to the consistent explanation of half-metallic ferromagnetism,representing the whole band-occupancy in material with exact detail of density of states(DOS).The stable Fm state was examined in spinels due to the exchange splitting of ho cation consisting of p-d hybridizations compatible with the result achieved for electronics band structure and ***,spin magnetic moment was explained in terms of anion,cation,and sharing charge on studied *** addition,the calculated thermoelectric properties clearly show that operation range of these systems may be utilized by future experimental works for identifying the potential applications of these systems.

关键词： ho-based spinels DFT simulations mechanical parameters Electronic properties hm ferromagnetism Figure of merit

Performance evaluation of the effect of humic acid on Anammox granular sludge:Apparent morphology,nitrogen removal and microbial community

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Journal of Environmental Sciences 2024年第10期144卷 148-158页

作者： Wenhui huang Peiling Xu Xiang Li Yong huang hao Sun Wei Li mao Zhang miao Shi Yan Yuan School of Environmental Science and Engineering Suzhou University of Science and TechnologySuzhou 215009China Suzhou hongyu Environmental Technology Company Limited by Shares Suzhou 215011China Suzhou Tianjun Environmental Technology Limited Company Suzhou 215011China Jiangsu Collaborative Innovation Center of Technology and material of Water Treatment Suzhou University of Science and TechnologySuzhou 215009China

humic acid(hA)is a typical refractory organicmatter,so it is of great significance to investigate its effect on the performance of Anammox granular *** the dosage ofhA≤50 mg/L,hA promotes the total nitrogen removal rate(NRR)to 1.45 kg/(m^(3)·day).When hA was between 50 and 100 mg/L,the NRR of Anammox was *** this time,the adsorption of hA causes the sludge to gradually turn fromred to brown,but the activities of heme and enzymes showed that its capacitywas not *** hA levels reached 250 mg/L,the NRR dropped to 0.11 kg/(m3·day).moderate hA levels promoted the release of extracellular polymeric substance(EPS),but excessive hA levels lead to a decrease in EPS *** inhibited Anammox activity,which indirectly hindered the transmission of substrate and accumulated substrate *** hA promoted the increase of heterotrophicmicrobial abundance in Anammox system,the microbial diversity decreased *** the increase of hA concentration,the abundance of Candidatus_Brocadia,the main functional microorganism of Anammox system,decreased gradually,while the abundance of Candidatus_Kuenenia increased gradually.

关键词： Anammox Landfill leachate humic acid heme microbial community Enzyme activity

(FeO)_(2)FeBO_(3) nanoparticles attached on interconnected nitrogen-doped carbon nanosheets serving as sulfur hosts for lithium-sulfur batteries

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Frontiers of materials Science 2024年第2期18卷 75-88页

作者： Junhai Wang huaqiu huang Chen Chen Jiandong Zheng Yaxian Cao Sang Woo Joo Jiarui huang School of material and Chemical Engineering Chuzhou UniversityChuzhou 239000China College of mechanical Engineering Tongling UniversityTongling 244000China Key Laboratory of Functional molecular Solids of the ministry of Education College of Chemistry and Materials ScienceAnhui Normal UniversityWuhu 241002China School of mechanical Engineering Yeungnam UniversityGyeongsanGyeongbuk 38541Republic of Korea

There are still many challenges including low conductivity of cathodes,shuttle effect of polysulfides,and significant volume change of sulfur during cycling to be solved before practical applications of lithium-sulfur(Li-S)*** this work,(FeO)_(2)FeBO_(3) nanoparticles(NPs)anchored on interconnected nitrogen-doped carbon nanosheets(NcNs)were synthesized,serving as sulfur carriers for Li-S batteries to solve such *** have the cross-linked network structure,which possess good electrical conductivity,large specific surface area,and abundant micropores and mesopores,enabling the cathode to be well infiltrated and permeated by the electrolyte,ensuring the rapid electron/ion transfer,and alleviating the volume expansion during the electrochemical *** addition,polar(FeO)_(2)FeBO_(3) can enhance the adsorption of polysulfides,effectively alleviating the polysulfide shuttle *** a current density of 1.0 A·g^(-1),the initial discharging and charging specific capacities of the(FeO)_(2)FeBO_(3)@NCNs-2/S electrode were obtained to be 1113.2 and 1098.3mA·h·g^(-1),*** 1000 cycles,its capacity maintained at 436.8 mA·h·g^(-1),displaying a decay rate of 0.08%per ***,combining NCNs with(FeO)_(2)FeBO_(3) NPs is conducive to the performance improvement of Li-S batteries.

关键词： (FeO)_(2)FeBO_(3) nitrogen-doped carbon nanosheet cathode lithium-sulfurbattery

Tomographic reconstruction of the Earth’s magnetosheath from multiple spacecraft:a theoretical study

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Earth and Planetary Physics 2024年第1期8卷 204-214页

作者： A.m.Jorgensen TianRan Sun Y.huang L.Li R.Xu L.Dai Chi Wang New mexico Institute of mining and Technology SocorroNMUSA National Space Science Center Chinese Academy of SciencesBeijing 100190China Tsinghua University Beijing 100084China

Following our earlier work on tomographic reconstruction of the magnetosheath soft X-ray emissions with superposed epoch analysis of many images recorded from a single spacecraft we now explore the instantaneous reconstruction of the magnetosheath and magnetopause using a few images recorded simultaneously from a few *** work is motivated by the prospect of possibly having two or three soft X-ray imagers in space in the coming years,and that many phenomena which occur at the magnetopause boundary,such as reconnection events and pressure pulse responses,do not lend themselves as well to superposed epoch *** the reconstruction is successful-which we demonstrate in this paper that it can be-this collection of imagers can be used to reconstruct the magnetosheath and magnetopause from a single image from each spacecraft,allowing for high time resolution *** this paper we explore the reconstruction using,two,three,and four *** show that the location of the subsolar point of the magnetopause can be determined with just two satellites,and that volume emissions of soft X-rays,and the shape of the boundary,can be reconstructed using three or more satellites.

关键词： magnetosheath tomography soft X-ray imaging SmILE