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FPGA-based plasma sterilization device for wound-edge reco.nition

Nanotechnology and Precision Engineering 2024年第3期7卷 56-70页

作者： Huijuan Lu Xiaorong Tang Minglei Li Xueping Jiang Wenxiang Xiao Hua Li School of Life and Environmental Sciences Guilin University of Electronic TechnologyGuilin 541004People’s Republic of China guilin urit medical electronic sales co. Ltd.Guilin 541004People’s Republic of China

There is a currently a lack of large-area plasma sterilization devices that can intelligently identify the shape of a wound for automatic *** this reason,in this work,a plasma sterilization device with wound-edge reco.nition was developed using aﬁeld-programmable gate array(FPGA)and a high-performance image-processing platform to realize intelligent and precise sterilization of *** was used to design the mechanical structure of the device,and it was manufactured using 3D *** device used an improvement of the traditional Sobel detection algorithm,which extends the detection of edges in only the x and y directions to eight directions(0○,45○,90○,135○,180○,225○,270○,and 315○),co.pleting the wound-edge detection by adaptive *** device can be co.trolled acco.ding to different shapes of sterilization area to adjust the positioning of a single plasma-jet tube in the horizontal plane for two-dimensional move-ment;the distance between the plasma-jet tube and the surface of the object to be sterilized can be also adjusted in the vertical *** this way,motors are used to move the plasma jet and achieve automatic,efﬁcient,and accurate plasma *** was found that a good sterilization effect co.ld be achieved at both the culture-medium level and the biological-tissue *** ideal sterilization parameters at the culture-medium level were a speed of 2 mm/s and aﬂow rate of 0.6 slm,while at the biological-tissue level,these values were 1 mm/s and 0.6 slm,respectively.

关键词： FPGA Wound-edge reco.nition Improvement of the Sobel algorithm Plasma Automatic and precise sterilization

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Experiment on inducing apoptosis of melanoma cells by micro-plasma jet

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Nanotechnology and Precision Engineering 2024年第1期7卷 10-17页

作者： Hua Li Qihao Shi Yanhua Yang Jinghao Qi Yuhan Zhang Fengyun Wang Xiaoxia Du Wenxiang Xiao School of Life and Environmental Sciences GuiLin University of Electronic TechnologyGuilinGuangXi 541004People’s Republic of China The Guangxi Human Physiological Information Noninvasive Detection Engineering Technology Research Center GuilinGuangXi 541004People’s Republic of China guilin urit medical electronic sales co. Ltd.GuilinGuangXi 541004People’s Republic of China

As a promising cancer treatment method,co.d atmospheric plasma has received widespread attention in recent ***,previous research has focused more on how to realize and expand the anti-cancer sco.e of plasma *** are also studies on the killing of small-scale cancer cells,but the effects of plasma jet on normal cells and normal cell clusters have been ***,we proposed a 50μm sized micro-plasma jet device,and used the device to treat melanoma cells(A-375)and human glial cells(HA1800)to evaluate their anti-cancer effects and effects on normal *** experimental results show that this kind of micro-plasma jet device can effectively inactivate cancer cells in a short period of time,while having little effect on normal *** work provides a certain experimental basis for the application ofﬁne plasma jet to clinically inactivate cancer cells.

关键词： 3D cell clusters Micro-plasma jet Cancer therapy Reactive oxygen species Plasma direct treatment

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A novel thin drift region device with field limiting rings in substrate

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Chinese Physics B 2011年第11期20卷 433-437页

作者：李琦朱金鸾王卫东韦雪明 Guangxi Key Laboratory of Information and co.munication Guilin University of Electronic Technology guilin Strong Micro electronics co. Ltd

A novel thin drift region device with heavily doped N＋ rings embedded in the substrate is reported, which is called the field limiting rings in substrate lateral double-diffused MOS transistor （SFLR LDMOS）. In the SFLR LDMOS, the peak of the electric field at the main junction is reduced due to the transfer of the voltage from the main junction to other field limiting ring junctions, so the vertical electric field is improved significantly. A model of the breakdown voltage is developed, from which optimal spacing is obtained. The numerical results indicate that the breakdown voltage of the device proposed is increased by 76% in co.parison to that of the co.ventional LDMOS.

关键词： field limiting ring reduced surface field reduced bulk field breakdown voltage

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A high-voltage SOI MOSFET with a co.pensation layer on the trenched buried oxide layer

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Journal of Semico.ductors 2013年第3期34卷 31-34页

作者：赵秋明李琦唐宁李勇昌 School of Information and co.munication Guilin University of Electronic Technology guilin Strong Micro electronics co. Ltd

A new silico.-on-insulator(SOI) high-voltage MOSFET structure with a co.pensation layer on the trenched buried oxide layer(CL T-LDMOS) is *** high density inverse interface charges at the top surface of the buried oxide layer(BOX) enhance the electric field in the BOX and a uniform surface electric field profile is obtained,which results in the enhancement of the breakdown voltage(BV).The co.pensation layer can provide additional P-type charges,and the optimal drift region co.centration is increased in order to satisfy the reduced surface electric field(RESURF) *** numerical simulation results indicate that the vertical electric field in the BOX increases to 6 MV/cm and the B V of the proposed device increases by 300%in co.parison to a co.ventional SOI LDMOS,while maintaining low on-resistance.

关键词： trenched buried oxide layer breakdown voltage on-resistance co.pensation layer

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Lateral stability regulation of intelligent electric vehicle based on model predictive co.trol

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Journal of Intelligent and co.nected Vehicles 2021年第3期4卷 104-114页

作者： co.g Li YunFeng Xie Gang Wang XianFeng Zeng Hui Jing guilin University of Aerospace Technology GuilinChina guilin University of electronic Technology GuilinChina Huizhou Desay SV Automotive Co.LtdHuizhouChina

Purpose–This paper studies the lateral stability regulation of intelligent electric vehicle(EV)based on model predictive co.trol(MPC)***/methodology/approach–Firstly,the bicycle model is adopted in the system modelling *** improve the accuracy,the lateral stiffness of front and rear tire is estimated using the real-time yaw rate acceleration and lateral acceleration of the vehicle based on the vehicle *** the co.straint of input and output in the model predictive co.troller is *** co.straints on the lateral speed of the vehicle are designed to guarantee the solved persistent feasibility and enforce the vehicle’s sideslip angle within a safety ***–The simulation results show that the proposed lateral stability co.troller based on the MPC algorithm can improve the handling and stability performance of the vehicle under co.plex working ***/value–The MPC schema and the objective function are *** integrated active front steering/direct yaw moments co.trol strategy is simultaneously adopted in the *** vehicle’s sideslip angle is chosen as the co.straint and is co.trolled in stable *** online estimation of tire stiffness is *** vehicle’s lateral acceleration and the yaw rate acceleration are modelled into the two-degree-of-freedom equation to solve the tire co.nering stiffness in real *** can ensure the accuracy of model.

关键词： Intelligent electric vehicle Model predictive co.trol Lateral stability co.trol

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Preparation and application of iron oxide/persimmon tannin/graphene oxide nanoco.posites for efficient adsorption of erbium from aqueous solution

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Journal of Rare Earths 2020年第12期38卷 1344-1353页

作者： Lin Gao Zhongmin Wang Chaoke Qin Zhenming Chen Mingmin Gao Na He Xi Qian Zhide Zhou Guiyin Li School of Materials Science and Engineering Guilin University of Electronic TechnologyGuilin 541004China School of Life and Environmental Sciences Guilin University of Electronic TechnologyGuilin 541004China China Nonferrous Metal(guilin)Geology for Mineral co. Ltd.Guilin 541004China co.lege of Materials and Chemical Engineering Hezhou UniversityHezhou 541004China

Rare earth elements(REEs)are used for the developme nt of new energy materials owing to their intrinsic physico.hemical ***,excess REEs in water threaten the safety of animals,plants and *** efficient way to separate REEs from the water is therefore *** this study,a biosorbent co.sisting of iron oxide(Fe3 O4),persimmon tannin(PT),and graphene oxide(GO)as Fe3 O4/PT/GO was prepared,and the adsorption of trivalent erbium(Er3+)ions from aqueous solution was *** adsorption process for Er3+ions co.forms to pseudo-seco.d order kinetic and the Langmuir isotherm model *** studies indicate that the adsorption process is spontaneous and *** electron microsco.y(SEM),X-ray photoelectron spectrosco.y(XPS),X-ray diffraction(XRD),thermogravimetric analysis(TGA).Fourier-transform infrared(FT-IR)spectrosco.y;Brunauer-Emmett-Teller(BET)analysis,and vibrating sample magnetometer(VSM)were used to assess the adsorption mechanism of Er3+ions onto the Fe3 O4/PT/GO biosorbent.A co.bination of electrostatic interactions,redox reactivity and chelation are responsible for adsorption of Er3+ions on the Fe3 O4/PT/GO biosorbent,The magnetic Fe3 O4/PT/GO biosorbent can be easily separated under the magnetic field for effective recycle of Er3+ions from aqueous ***,this new biomass co.posite holds great promise for wastewater treatment.

关键词： Erbium Magnetic graphene oxide Persimmon tannins Biosorbent Adsorption mechanism Rare earths

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co.laboratively enhancing electrochemical properties of LiNi_(0.83)co.(0.11)Mn_(0.06)O_(2) through doping and co.ting of quadrivalent elements

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Rare Metals 2023年第12期42卷 4103-4114页

作者： Zhao-Zhe Yu Gui-Quan Zhao Fang-Li Ji Hao Tong Qi-Lin Tong Hua-Cheng Li Yan Cheng Guangxi Key Laboratory of Manufacturing Systems and Advanced Manufacturing Technology Guilin University of Electronic TechnologyGuilin 541004China Engineering Research Center of electronic Information Materials and Devices Ministry of EducationGuilin University of Electronic TechnologyGuilin 541004China Guangxi CNGR New Energy Science&Technology co. Ltd.Qinzhou 535000China

Ni-rich layered oxides(Ni>80%)with high energy density have beco.e a mainstream cathode material for Li-ion ***,irreversible phase transitions and interface instability are deep-seated challenges in co.mercializing Ni-rich *** study used a co.laborative modification strategy involving doping and co.ting with quadrivalent elements to co.struct Ni-rich *** particular,introducing tetravalent Zr makes the valence change of Ni(2+to 4+)more accessible to co.plete spontaneously during the charging and discharging processes,which significantly suppresses the cationic mixing and irreversible phase transition(H2?H3).co.bining the strategy of co.structing CeO_(2) co.tings on the surface and interfacial spinel-like phases improves the Li+diffusion kinetics and interfacial ***,part of the strongly oxidizing four-valence Ce^(4+)diffuses to the surface layer,further increasing the average valence state of ***,LiNi_(0.83)co.(0.11)Mn_(0.06)O_(2)(NCM)-Zr@Ce achieves 78.5%outstanding retention at1.0C after 200 cycles within 3.0-4.3 V co.pared to unmodified NCM with 41.4%*** improved cyclic stability can be attributed to the co.laborative modification strategy of the quadrivalent elements,which provides an effective synergistic modification strategy for developing high-performance Li-ion battery cathode materials.

关键词： co.laborative modification strategy Quadrivalent elements Phase transitions Structural degradation Ni-rich layered oxides

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Effect of neodymium doping on structure,magnetic properties and microwave absorption performance of SrMnO_(3)

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Journal of Rare Earths 2024年第2期42卷 354-363,I0005页

作者： Jixiang Yue Lichun Cheng Jilei Xiong Qingrong Yao Man Wang Yucheng Chen Qianxin Long Xiaojian Guo School of Materials Science and Engineering Guilin University of Electronic TechnologyGuilin541004China Guangxi Key Laboratoryof Information Materials guilin University of electronic Technology Guilin541004China Anhui Jihua New Materials co. Ltd.Anqing246300China

A simple co.posite Sr_(1-x)Nd_(x)MnO_(3)(x=0,0.05,0.1,0.15,0.2) nano powders were successfully prepared by the sol-gel method as a light-weight broadband electromagnetic wave *** effect of Nd^(3+)doping on the structure,microstructure and properties of SrMnO_(3) was *** is found that with the doping of Nd^(3+),the space group of the SrMnO_(3) changes from p63/mmc to pm3m,and the crystalline shape starts to change from hexagonal to cubic *** electron microsco.y(SEM) and Brunauer-Emmett-Teller(BET) tests co.firm that the particle sizes of the sample decrease and the specific surface area increases,which are attributed to the inhibition of grain growth after Nd^(3+)is doped.X-ray photoelectron spectrosco.y(XPS) shows that after Nd^(3+)doping,the co.tent of oxygen vacancy increases,and Mn^(4+) co.verts to Mn^(3+).Due to the defects of the materials,the polarization effect is enhanced,thus,the dielectric and magnetic properties of the doped samples are *** maximum reflection loss of the Sr_(0.85)Nd_(0.15)MnO_(3) is-33.41 dB at 7.84 GHz for a thickness of 2.4 mm,while Sr_(0.9)Nd_(0.1)MnO_(3) has the best bandwidth performance at 2.32 GHz with a reflection loss below-10dB.

关键词： Sr_(1-x)Mn_xO_(3) Crystal structure Microwave absorption Magnetic properties Nano powder Rare earths

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CNN Based No-Reference HDR Image Quality Assessment

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Chinese Journal of electronics 2021年第2期30卷 282-288页

作者： FAN Kefeng LIANG Jiyun LI Fei QIU Puye Digital Technology Research Center China Electronics Standardization Institute School of electronic Engineering and Automation Guilin University of Electronic Technology Guangzhou Sequoia DB co.

Motivated by the problems of non-universality and over-reliance on the original reference image in High dynamic range(HDR) Image quality assessment(IQA), a co.volutional neural network-based algorithm for no-reference HDR image quality assessment is proposed. The Salience detection by self-resemblance(SDSR) algorithm which extracts the salient regions of the HDR image, is used to simulate the human visual attention mechanism. Then a visual quality perception network for training quality prediction models is designed acco.ding to the visual characteristics of luminance and co.trast sensitivity. And this network co.sists of an Error estimation network(Error-net), a Perceptual resistance network(PR-net) and a mixing function. The experimental results indicate that the method proposed has high co.sistency with subjective perception, and the value of assessment metrics Spearman rank-order co.relation co.fficient(SROCC), Pearson product-moment co.relation co.fficient(PLCC) and Root mean square error(RMSE)co.respondingly reaches 0.941, 0.910 and 8.176 as well. It is co.parable with classic full-reference HDR IQA methods.

关键词： co.volutional neural network-based algorithm visual perception High dynamic range Image quality assessment human visual attention mechanism Perceptual resistance network co.volutional neural nets quality prediction models mean square error methods visual characteristics self-resemblance algorithm visual quality perception network No-Reference HDR Image Quality Assessment feature extraction Error-net original reference image image co.ing Error estimation network

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Lightweight Design of co.mercial Vehicle Cab Based on Fatigue Durability

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co.puter Modeling in Engineering & Sciences 2023年第7期136卷 421-445页

作者： Donghai Li Jiawei Tian Shengwen Shi Shanchao Wang Jucai Deng Shuilong He School of Mechanical and Electrical Engineering Guilin University of Electronic TechnologyGuilin541004China Dongfeng Liuzhou Motor co. Ltd.Liuzhou545005China

To better improve the lightweight and fatigue durability performance of the tractor cab,a multi-objective lightweight design of the cab was carried out in this ***,the finite element model of the cab with co.nterweight loading was established and then co.firmed by the physical testing,and use the inertial reliefmethod to obtain stress distribution under unit *** cab-frame rigid-flexible co.plingmulti-body dynamicsmodelwas built by Adams/car *** the cab airbag mount displacement and acceleration signals acquired on the proving ground as the desired signals and obtaining the fatigue analysis load spectrum through Femfat-Lab virtual *** fatigue simulation analysis is performed in nco.e based on the Miner linear fatigue cumulative damage ***,with themass and fatigue damage values as the optimization objectives,the bending-torsional stiffness and first-order bending-torsional mode as co.straints,the thickness variables are screed based on the sensitivity *** experimental design was carried out using the Optimal Latin hypercube method,and the multi-objective optimal design of the cab was carried out using theKriging approximationmodel fitting and particle *** weight of the optimized cab is reduced by 7.8%on the basis of meeting the fatigue durability ***,a seven-axis road simulation test rig was designed to verify its fatigue *** results show the optimized cab can co.sider both lightweight and durability.

关键词： Finite element analysis multi-body dynamics fatigue durability analysis sensitivity analysis lightweight design particle swarm optimization

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