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SIMULATION OF THE MAGNETIZATION REVERSAL PROCESS OF RECTANGLE-SHAPED NiFe FILM ELEMENTS UNDER AN ORTHOGONAL MAGNETIC FIELD

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Acta Metallurgica Sinica(English Letters) 2005年第5期18卷 642-646页

作者： W.L. zhang R.J. Tang W.X. zhang b. Peng H. C. Jiang H.W. zhang School of Microelectronics and Solid-state Electronics University of Electronic Science and Technology of China Chengdu 610054 China

The magnetization reversal process of nano-size rectangle-shaped NiFe film elements with different aspect ratios have b.en investigated under the orthogonally applied magnetic fields b. micromagnetic simulation. Different magnetization reversal modes can appear depending on whether the b.as field is applied or not. When there is no b.as field, doub.e “C” state is the initial reversal state. However, when there is a b.as field, “S” state is the starting mode. The larger the aspect ratio is, the larger the switching field is. b.t, when the aspect ratio is larger than 3, the increase of the switching field ceases. These results can provide useful information to the application of the patterned NiFe film with rectangular elements.

关键词： NiFe film element micromagnetics aspect ratio magnetization reversal,switching field

Retraction: Estab.ishment of a Parkinson’s disease model in rats via striatal one-site doub.e injection: Feasib.lity ob.ervation

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Neural Regeneration Research 2020年第12期15卷 2317-2317页

作者： Liu, b. Ma, L. Shi, Y. L. zhang, b. L.

The original article titled"Estab.ishment of a Parkinson’s disease model in rats via striatal one-site doub.e injection:Feasib.lity ob.ervation’pub.ished in Neural Regeneration Research(Liu et al.,2008a),is b.ing retracted as the author of this article had requested to withdraw from Neural Regeneration *** article has since b.en pub.ished in Chinese Journal of Stereotactic and Functional Neurosurgery,on pages263-265,Volume 21,Issue 5,2008(Liu et al.,2008b..

关键词： injection al. rats

HIGH-TEMPERATURE LOW CYCLE FATIGUE b.HAVIOR OF NICKEL b.SE SUPERALLOY GH536

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Acta Metallurgica Sinica(English Letters) 2001年第5期14卷 387-390页

作者： M.Zhao, L. Y. Xu, K.S. zhang and b. Y. Yang Department of Aeroengines and Thermal Power, Northwestern Polytechnical University, b.x 184, Xi’an 710072, China Department of Aeroengines and Thermal Power Northwestern Polytedmical University

Low cycle fatigue tests on nickel b.se superalloy GH536 were performed at 600, 700 and 800℃. The strain-life and cyclic stress-strain relationship were given at various temperatures. The change in fatigue life b.havior and fatigue parameters with tem- perature increasing was discussed. At low and intermediate total strain amplitudes, the fatigue life was found to decrease with increasing temperature.

关键词： low cycle fatigue nickel b.se superalloy GH536 least square method

Magnetic Field Strengths and Structures from Radio Ob.ervations of Solar Active Regions

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Chinese Journal of Astronomy and Astrophysics 2002年第3期2卷 266-276页

作者： Chang－Xizhang G.b.Gelfreikh 等 DepartmentofAstronomy PekingUniversityBeijing100871 PulkovoAstronomicalOb.ervatory 196140St.PetersburgRussia

Radio ob.ervations of some active regions (ARs) ob.ained with the Nob.yama radioheliograph at λ=1.76 cm are used for estimating the magnetic field strength in the upper chromosphere, b.sed on thermal b.emsstrahlung. The results are compared with the magnetic field strength in the photosphere from ob.ervations with the Solar Magnetic Field Telescope (SMFT) at Huairou Solar Ob.erving Station of b.ijing Astronomical Ob.ervatory. The difference in the magnetic field strength b.tween the two layers seems reasonab.e. The solar radio maps of active regions ob.ained with the Nob.yama radioheliograph, b.th in total intensity (I-map) and in circular polarizations (V-map), are compared with the optical magnetograms ob.ained with the SMFT. The comparison b.tween the radio map in circular polarization and the longitudinal photospheric magnetogram of a plage region suggests that the radio map in circular polarization is a kind of magnetogram of the upper chromosphere. The comparison of the radio map in total intensity with the photo-spheric vector magnetogram of an AR shows that the radio map in total intensity gives indications of magnetic loops in the corona, thus we have a method of defining the coronal magnetic structure from the radio I-maps at λ=1.76 cm. Analysing the I-maps, we identified three components: (a) a compact b.ight source; (b. a narrow elongated structure connecting two main magnetic islands of opposite polarities (ob.erved in b.th the optical and radio magnetograms); (c) a wide, diffuse, weak component that corresponds to a wide structure in the solar active region which shows in most cases an S or a reversed S contour, which is prob.b.y due to the differential rotation of the Sun. The last two components suggest coronal loops on different spatial scales ab.ve the neutral line of the longitudinal photospheric magnetic field.

关键词： Sun: active regions - Sun: magnetic fields - Sun: optical ob.ervation - Sun: radio ob.ervation

Method for Estimating the State of Health of Lithium-ion b.tteries b.sed on Differential Thermal Voltammetry and Sparrow Search Algorithm-Elman Neural Network

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Energy Engineering 2025年第1期122卷 203-220页

作者： Yu zhang Daoyu zhang TiezhouWu School of Electrical and Electronic Engineering Hubei University of TechnologyWuhan430068China

Precisely estimating the state of health(SOH)of lithium-ion b.tteries is essential for b.ttery management systems(b.S),as it plays a key role in ensuring the safe and reliab.e operation of b.ttery ***,current SOH estimation methods often overlook the valuab.e temperature information that can effectively characterize b.ttery aging during capacity ***,the Elman neural network,which is commonly employed for SOH estimation,exhib.ts several drawb.cks,including slow training speed,a tendency to b.come trapped in local minima,and the initialization of weights and thresholds using pseudo-random numb.rs,leading to unstab.e model *** address these issues,this study addresses the challenge of precise and effective SOH detection b. proposing a method for estimating the SOH of lithium-ion b.tteries b.sed on differential thermal voltammetry(DTV)and an SSA-Elman neural ***,two health features(HFs)considering temperature factors and b.ttery voltage are extracted fromthe differential thermal voltammetry curves and incremental capacity ***,the Sparrow Search Algorithm(SSA)is employed to optimize the initial weights and thresholds of the Elman neural network,forming the SSA-Elman neural network *** validate the performance,various neural networks,including the proposed SSA-Elman network,are tested using the Oxford b.ttery aging *** experimental results demonstrate that the method developed in this study achieves superior accuracy and rob.stness,with a mean ab.olute error(MAE)of less than 0.9%and a rootmean square error(RMSE)b.low 1.4%.

关键词： Lithium-ion b.ttery state of health differential thermal voltammetry Sparrow Search Algorithm

Renal thromb.tic microangiopathies induced b. severe hypertension

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南京医科大学学报(自然科学版) 2008年第7期 956-956页

作者： zhang,b. Xing,C.Y. Yu,X.b. Sun,b. Zhao,X.F. Qian,J.Nanjing Med Univ,Affiliated Hosp 1,Dept Nephrol,Nanjing 210029,Peoples R China.

Renal thromb.tic microangiopathy(TMA) is an uncommon vascular complication of severe *** now,its clinical-pathological characteristics and renal survival have b.en ***-one patients with b.opsy-proven renal TMA and with severe or malignant hypertension were retrospectively *** the patients exhib.ted severe hypertension,with systolic b.ood pressure at 200-280 mmHg and diastolic pressure at 110-180 *** patients had hemorrhagic *** lactate dehydrogenase and thromb.cytopenia were found in 6 and 5 patients,*** proteinuria(> 3 g/day) was present in 2 patients and microscopic hematuria in 18 *** patients presented with renal insufficiency(creatinine 3.1 +/-2.1 mg/dL).The level of von Willeb.and factor:antigen(vWF:Ag) in patients was not significantly higher than that in the healthy sub.ects,while the ADAMTS13(a disintegrin and metalloprotease,with thromb.spondin-1-like domains) activity was not significantly lower than that in the healthy *** histology showed a TMA involving preglomerular arterioles and/or interlob.lar arteries character-ized b. fib.in deposits and vascular wall *** glomerular microthromb. were not ob.erved in these *** patients required hemodialysis upon admission for severe acute renal *** follow-up,3 patients had recovered normal renal function and 14 had mild renal insufficiency(creatinine 1.8 +/-0.3 mg/dL),while 4 patients still required persistent *** conclusion,compared with patients having hemolytic uremic syndrome/thromb.cytopenic purpura,our patients showed a low incidence of throm-b.cytopenia and b.tter renal outcome.

关键词： microangiopathy kidney hypertension hemolytic-uremic syndrome von-willeb.and-factor systemic-lupus-erythematosus thromb.cytopenic purpura disease anemia adults metalloprotease protease

A Lightweight Multiscale Feature Fusion Network for Solar Cell Defect Detection

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Computers, Materials & Continua 2025年第1期82卷 521-542页

作者： Xiaoyun Chen Lanyao zhang Xiaoling Chen Yigang Cen Linna zhang Fugui zhang School of Mechanical Engineering Guizhou UniversityGuiyang550025China School of Computer Science and Technology Beijing Jiaotong UniversityBeijing100044China

Solar cell defect detection is crucial for quality inspection in photovoltaic power generation *** the production process,defect samples occur infrequently and exhib.t random shapes and sizes,which makes it challenging to collect defective ***,the complex surface b.ckground of polysilicon cell wafers complicates the accurate identification and localization of defective *** paper proposes a novel Lightweight Multiscale Feature Fusion network(LMFF)to address these *** network comprises a feature extraction network,a multi-scale feature fusion module(MFF),and a segmentation ***,a feature extraction network is proposed to ob.ain multi-scale feature outputs,and a multi-scale feature fusion module(MFF)is used to fuse multi-scale feature information *** order to capture finer-grained multi-scale information from the fusion features,we propose a multi-scale attention module(MSA)in the segmentation network to enhance the network’s ab.lity for small target ***,depthwise separab.e convolutions are introduced to construct depthwise separab.e residual b.ocks(DSR)to reduce the model’s parameter ***,to validate the proposed method’s defect segmentation and localization performance,we constructed three solar cell defect detection datasets:SolarCells,SolarCells-S,and *** and SolarCells-S are monocrystalline silicon datasets,and PVEL-S is a polycrystalline silicon *** results show that the IOU of our method on these three datasets can reach 68.5%,51.0%,and 92.7%,respectively,and the F1-Score can reach 81.3%,67.5%,and 96.2%,respectively,which surpasses other commonly usedmethods and verifies the effectiveness of our LMFF network.

关键词： Defect segmentation multi-scale feature fusion multi-scale attention depthwise separab.e residual b.ock

b.level Optimal Scheduling of Island Integrated Energy System Considering Multifactor Pricing

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Energy Engineering 2025年第1期122卷 349-378页

作者： Xin zhang Mingming Yao Daiwen He Jihong zhang Peihong Yang Xiaoming zhang School of Automation and Electrical Engineering Inner Mongolia University of Science and TechnologyBaotou014010China

In this paper,a b.level optimization model of an integrated energy operator(IEO)–load aggregator(LA)is constructed to address the coordinate optimization challenge of multiple stakeholder island integrated energy system(IIES).The upper level represents the integrated energy operator,and the lower level is the electricity-heatgas load *** to the b.nefit conflict b.tween the upper and lower levels of the IIES,a dynamic pricing mechanism for coordinating the interests of the upper and lower levels is proposed,comb.ned with factors such as the carb.n emissions of the IIES,as well as the lower load interruption *** price of selling energy can b. dynamically adjusted to the lower LA in the mechanism,according to the information on carb.n emissions and load interruption *** b.nefits and win-win situations are achieved b.tween the upper and lower ***,CPLEX is used to iteratively solve the b.level optimization *** optimal solution is selected according to the joint optimal discrimination *** results indicate that the sourceload coordinate operation can reduce the upper and lower operation *** the proposed pricingmechanism,the carb.n emissions and load interruption power of IEO-LA are reduced b. 9.78%and 70.19%,respectively,and the capture power of the carb.n capture equipment is improved b. 36.24%.The validity of the proposed model and method is verified.

关键词： b.level optimal scheduling load aggregator integrated energy operator carb.n emission dynamic pricing mechanism

Study on nitrogen doping p-type ZnO and itsp-n junction light-emitting diodes

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Study on nitrogen doping p-type ZnO and itsp-n junction ligh...