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Optimization and experimental analysis of sweet potato ship-shaped transplanting trajectory using particle swarm algorithm

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International Journal of Agricultural and Biological Engineering 2024年第3期17卷 100-107页

作者： Zhengduo Liu Lin Hua Zhaoqin Lyu Jiaji Hu Wenxiu Zheng co.lege of Mechanical and Vehicle Engineering West Anhui UniversityLu’an 237000AnhuiChina Traditional Chinese Medicine Institute of anhui Dabie Mountain West Anhui UniversityLu’an 237012AnhuiChina co.lege of Mechanical and electronic Engineering Shandong Agricultural UniversityTai’an 271018ShandongChina anhui Zhengyang Machinery technology co. Ltd.Lu’an 237012AnhuiChina

The mechanization of ship-shaped transplanting is currently an urgent problem that should be *** movement trajectory of the transplanting mechanism is the key technology to perform ship-shaped *** this study,a ship-shaped transplanting trajectory was built and a mathematical model of a four-link transplanting mechanism was developed based on the requirements of the sweet potato transplanting agronomic *** particle swarm optimization algorithm was used,with the length of the four-bar mechanism and the installation angle of the fixed bar serving as the variables to *** objective was to minimize the deviation of the ship-shaped transplanting trajectory,yielding an iterative optimization *** MATLAB simulation results showed that the penalty factors of different proportions in the adaptive particle swarm optimization algorithm affected the transplanting *** optimal penalty factor parameters areα=0.6,β=*** ensure that the transplanting trajectory fulfills the agronomic requirements,and limit the deviation in the return trajectory of the *** sizes of the optimized four-bar mechanism were 110,312,245,160,360,and,160 *** determined installation angle was 100°.The results of the field experiments demonstrated that the optimized four-bar transplanting mechanism can better fulfill the agronomic technical requirements of sweet potato ship-shaped *** a transplanting speed of 0.2 m/s,the average qualified rates of insertion depth,insertion length,and tail height were equal to 94.00%,93.83%,and 91.67%.The results obtained in this study provide a theoretical basis and technical support for studying and developing sweet potato ship-shaped transplanting machinery.

关键词： sweet potato oblique insertion method mechanical arm particle swarm

Engineering and understanding SnS_(0.5)Se_(0.5)@N/S/Se triple-doped carbon nanofibers for enhanced sodium-ion batteries

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Chinese Chemical Letters 2024年第4期35卷 226-230页

作者： Fanjun Kong Yixin Ge Shi Tao Zhengqiu Yuan Chen Lu Zhida Han Lianghao Yu Bin Qian School of electronic and Information Engineering Changshu Institute of TechnologyChangshu 215500China Key Laboratory of Spin Electron and Nanomaterials of anhui Higher Education Institutes Suzhou UniversitySuzhou 234000China Far East Holding Group co. Ltd.Yixing 214200China

Tin-based chalco.enides have attracted tremendous attention as an anode material for sodium storage owing to their unique structure and high theoretical capacity. Unfortunately, the large volume change and poor co.ductivity lead to sluggish reaction kinetics and poor cycling performance. Herein, SnS_(0.5)Se_(0.5)nanoparticles co.pled with N/S/Se triple-doped carbon nanofibers(SnS_(0.5)Se_(0.5)@NSSe-C) are designed and synthesized through electrospinning and annealing process. Benefiting from the synergistic effects of SnS_(0.5)Se_(0.5)and NSSe-C, the SnS_(0.5)Se_(0.5)@NSSe-C nanofibers exhibit a high reversible capacity and ultralong cycle life at higher current density for sodium-ion batteries. Furthermore, the sodium storage mechanism and electrochemical reaction kinetics of the SnS_(0.5)Se_(0.5)@NSSe-C co.posite are characterized by the in-situ measurements. The theoretical calculations further reveal the structural advantages of SnS_(0.5)Se_(0.5)@NSSeC co.posite, which exhibits a high adsorption energy of Na+. This work can provide a novel idea for the synthesis of ternary tin-based chalco.enides and is beneficial for the investigation of their reaction kinetics.

关键词： SnS_(0.5)Se_(0.5) Carbon nanofibers Doping Density functional theory Sodium ion batteries

Few-Shot Named Entity Reco.nition with the Integration of Spatial Features

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Wuhan University Journal of Natural Sciences 2024年第2期29卷 125-133页

作者： LIU Zhiwei HUANG Bo XIA Chunming XIONG Yujie ZANG Zhensen ZHANG Yongqiang co.lege of Electrical and electronic Engineering Shanghai University of Engineering ScienceShanghai 201620China Shanghai Zhongyu Academy of Industrial Internet Shanghai 201620China AIoT Manufacturing Solutions technology co. Ltd.Hefei 230000AnhuiChina

The few-shot named entity reco.nition(NER)task aims to train a robust model in the source domain and transfer it to the target domain with very few annotated ***,some approaches rely on the prototypical network for ***,these approaches often overlook the spatial relations in the span boundary matrix because entity words tend to depend more on adjacent *** propose using a multidimensional co.volution module to address this limitation to capture short-distance spatial ***,we uti-lize an improved prototypical network and assign different weights to different samples that belong to the same class,thereby enhancing the performance of the few-shot NER *** experimental analysis demonstrates that our approach has significantly improved over baseline models across multiple datasets.

关键词： named entity reco.nition prototypical network spatial relation multidimensional co.volution

Self-powered wireless environmental monitoring system for in-service bridges by galloping piezoelectric-triboelectric hybridized energy harvester

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Science China(Technological Sciences) 2024年第5期67卷 1498-1509页

作者： HUANG KangXu WANG XiaoFei WANG Li ZHOU YuHui LIU FuHai CHANG ShiYuan ZHU JunTao ZHOU YuXuan ZHANG He LUO JiKui co.lege of Civil Engineering and Architecture Zhejiang UniversityHangzhou310058China anhui Transport co.sulting&Design Institute co. Ltd.Hefei230088China co.lege of electronics&Information Hangzhou Dianzi UniversityHangzhou310018China Center for Balance Architecture Zhejiang UniversityHangzhou310058China co.lege of Information Science&electronic Engineering Zhejiang UniversityHangzhou310027China

The energy harvesting technology for the ubiquitous natural wind enables a desirable solution to the issue of distributed sensors in the bridge environmental sensing Internet of Things(Io T)system being restricted to co.ventional energy *** this work,a self-powered system based on a co.pact galloping piezoelectric-triboelectric energy harvester(GPTEH)is developed to achieve efficient wind energy *** GPTEH is co.structed on the prototype of a cantilever structure with piezoelectric macro-fiber co.posite(MFC)sheets and a rectangular bluff body with triboelectric nanogenerators(TENGs).Through a special swing-type structural design with iron blocks inside the bluff body,the GPTEH exhibits preferable aerodynamic behavior and excellent energy co.version efficiency,co.pared to co.ventional cantilever kind of piezoelectric wind energy harvester(PWEH).The GPTEH also demonstrates the capability of high output power density(PEH of 23.65 W m^(-2)and TENG of 1.59 W m^(-2)),superior response wind speed(about 0.5 m s^(-1)),and excellent long-term stability(over 14000 cyclic tests).Furthermore,a power management system is developed to efficiently utilize the output energy from GPTEH to power the sensors and wirelessly transmit environmental data to the *** proposed GPTEH-powered system exhibits a great potential for the bridge environmental monitoring and Io T technologies.

关键词： self-powered hybrid nanogenerator triboelectric nanogenerator macro-fiber co.posite wireless environmental monitoring system

Enhanced Photocatalytic co.(2) Reduction via Linkage Substitution in Porphyrinic co.alent Organic Frameworks

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CCS Chemistry 2024年第7期6卷 1689-1697页

作者： Suleman Suleman Kang Sun Yiming Zhao Xinyu Guan Zhongyuan Lin Zheng Meng Hai-Long Jiang Department of Chemistry University of Science and Technology of ChinaHefeiAnhui 230026

A catalytic performance is greatly impacted by the microenvironment surrounding the catalytic ***,efforts to modify the microenvironment are primarily directed towards the first co.rdination spheres,while co.trolling the seco.dary co.rdination spheres is entirely *** this work,a series of porphyrin-based co.alent organic frameworks(co.s)with distinct linkage were rationally designed to investigate the structure-property relationship between the seco.dary co.rdination spheres of catalytic centers and co.(2) *** seco.dary co.rdination spheres of co.s co.ld be changed readily by manipulating the organic *** photocatalytic co.(2) reduction,the co. withβ-ketoenamine as the linkage(NiPor-BDOB)exhibited superior activity,selectivity,and stability over its imine-linked co.nterpart(NiPor-BDA).Experiments and theoretical calculations indicated that the distinct seco.dary co.rdination sphere resulted in an electronic density change of Ni centers,leading to enhanced photocatalytic *** study highlights the significance of co.trolling the seco.dary co.rdination sphere around the active site.

关键词： co.alent organic frameworks linkage substitution photocatalysis co.(2)reduction activity selectivity

General synthesis of transition metal nitride arrays by ultrafast flash Joule heating within 500 ms

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Science China Chemistry 2024年第6期67卷 1976-1982页

作者： Peiqi Shen Jiahui Zhao Yanan Gao Yunxiang Lin Yuchen Han Kun Xu School of Chemistry and Chemical Engineering Key Laboratory of Functional Inorganic Material Chemistry of Anhui ProvinceAnhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized MaterialsKey Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of EducationAnhui UniversityHefei230601China Institutes of Physical Science and Information technology Center of Free Electron Laser&High Magnetic FieldLeibniz International Joint Research Center of Materials Sciences of Anhui ProvinceAnhui UniversityHefei230601China

Transition metal nitrides(TMNs)are co.sidered as viable alternatives to noble metal catalysts owing to their versatile electronic structure and favorable catalytic ***,the co.ventional synthetic processes for TMNs suffer from high energy co.sumption and low production *** this study,a range of TMNs and their hetero-co.posite arrays were successfully synthesized via an ultrafast flash Joule heating technology within 0.5 *** a proof co.cept,the nitrides and hetero-co.posites were applied for the electrocatalytic hydrazine oxidation reaction(HzOR),in which the co.(4)N/Mo_(16)N_(7)arrays shows the best performance with a geometric current density of 100 mA cm^(-2)at 23 mV(*** hydrogen electrode(RHE)).This work paves a new way for the ultrafast synthesis of TMNs which co.ld meet the ever-increased energy crisis.

关键词： flash Joule heating rapid synthesis transition metal nitrides hydrazine oxidation reaction electrocatalysts

Assessment on gas-polyethylene terephthalate solid interface partial discharge properties of C4F7N/co.(2)gas mixture for eco.friendly gas insulating transformer

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High Voltage 2024年第1期9卷 35-45页

作者： Song Xiao Yifan Wang Chenhua Ren Haoran Xia Yue Zhao Jingzi Qin Xiaoxing Zhang Yi Luo Yi Li State Key Laboratory of Power Grid Environmental Protection School of Electrical Engineering and AutomationWuhan UniversityWuhanHubeiChina Beijing International S&T co.peration Base for Plasma Science and Energy co.version Institute of Electrical EngineeringChinese Academy of SciencesBeijingChina State Grid anhui Electric Power co.pany anhui Electric Power Research Institute HefeiAnhuiChina Hubei Engineering Research Center for Safety Monitoring of New Energy and Power Grid Equipment School of Electrical and Electronic EngineeringHubei University of TechnologyWuhanHubeiChina

The eco.friendly insulating gas perfluoroisobutyronitrile(C_(4)F_(7)N)is potentially used in gas-insulated transformers(GIT)to replace sulphur hexafluoride(SF_(6)).However,evaluation of the long-term insulation reliability and gas–solid interface discharge deco.position characteristics of the gas–solid film insulation structure in GIT is *** authors simulated the gas–solid film insulation structure in GIT and explored the interface partial discharge(PD)characteristics of C4F7N/co.(2)gas mixture with polyethylene terephthalate(PET).The effect of gas pressure,mixing ratio on gas–solid interface gas deco.position,PET degradation was investigated,and the interaction mechanism was *** is found that the interface PD generated three degradation regions on a PET *** gas–solid interface reaction in the electrode co.tact region and the discharge development trace was significantly higher than that of halation *** co.tent of gas deco.position products decreases with the increase of gas pressure and the PD intensity of SF6-PET is inferior to that of C_(4)F_(7)N/co.(2)under the same *** results provide reference for the development and application of C_(4)F_(7)N/co.(2)based GIT.

关键词： interface solid insulation

Tendencies of alloyed engineering in BiOX-based photocatalysts:a state-of-the-art review

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Rare Metals 2024年第4期43卷 1488-1512页

作者： Yan-Dong Sun Chao Zeng Xue Zhang Zi-Qi Zhang Bo Yang Sheng-Qi Guo Tianjin Key Laboratory of Clean Energy and Pollutant co.trol School of Energy and Environmental EngineeringHebei University of TechnologyTianjin300401China State-Province Joint Engineering Laboratory of Zeolite Membrane Materials Institute of Advanced MaterialsCollege of Chemistry and Chemical EngineeringJiangxi Normal UniversityNanchang330022China anhui Province Key Laboratory of Pollutant Sensitive Materials and Environmental Remediation School of Physics and Electronic InformationAnhui Province Industrial Generic Technology Research Center for Alumics MaterialsHuaibei Normal UniversityHuaibei235000China

Energy-saving and environmentally friendly photocatalysis has emerged as a popular research area in response to issues with energy scarcity and environmental *** to the unique layer-like structure,BiOX(Cl,Br,I)is frequently used in ***,inherent flaws in BiOX,such as an inappropriate band gap and low carrier separation efficiency,restrict its capacity for *** to the tunable grouping layer,alloying engineering is employed to optimize the intrinsic properties of BiOX and alloyed BiOX beco.es a promising photocatalytic *** review describes the structure of BiOX,where tunable halogen layers provide favorable co.ditions for the implementation of alloying engineering to improve intrinsic *** article co.pares the effects and mechanisms of alloying engineering on the optimization of the energy band structure and carrier behavior of BiOX,and lists various modification methods used to improve the optimization of the intrinsic properties by alloying engineering,including defect engineering,morphology co.trol as well as the synergy between alloying and other modification methods(bismuth-rich strategies,cation doping,co.struction of heterojunctions and plasma resonance effects).Subsequently,applications of alloyed BiOX in energy and environmental fields are summarized,including co.taminant degradation,antibacterial,co.(2)reduction,nitrogen fixation and organic ***,we summarize the current challenges and future directions of alloyed *** is expected that this work will provide guidance and assistance for an in-depth study and understanding of the mechanisms of alloying engineering to optimize intrinsic properties and design alloyed BiOX with higher photocatalytic activity.

关键词： Bismuth oxyhalide Photocatalytic Alloyed engineering Microstructural regulation Application

Manufacturing task data chain-driven production logistics trajectory analysis and optimization decision making method

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Advances in Manufacturing 2024年第1期12卷 185-206页

作者： Lin Ling Zhe-Ming Song Xi Zhang Peng-Zhou Cao Xiao-Qiao Wang co.g-Hu Liu Ming-Zhou Liu School of Mechanical Engineering Hefei University of TechnologyHefei230009People’s Republic of China Guobo electronics co.Ltd. Nanjing211111People’s Republic of China School of Mechanical and electronic Engineering Suzhou UniversitySuzhou234000AnhuiPeople’s Republic of China Sino-US Global Logistics Institute Shanghai Jiao Tong UniversityShanghai200030People’s Republic of China

Production logistics(PL)is co.sidered as a critical factor that affects the efficiency and co.t of production operations in discrete manufacturing *** effectively utilize manufacturing big data to improve PL efficiency and promote job shop floor eco.omic benefits,this study proposes a PL trajectory analysis and optimization decision making method driven by a manufacturing task data chain(MTDC).First,the manufacturing task chain(MTC)is defined to characterize the discrete production process of a *** handle manufacturing big data,the MTC data paradigm is designed,and the MTDC is ***,the logistics trajectory model is presented,where the various types of logistics trajectories are extracted using the MTC as the search engine for the *** on this,a logistics efficiency evaluation indicator system is proposed to support the optimization decision making for the ***,a case study is applied to verify the proposed method,and the method determines the PL optimization decisions for PL efficiency without changing the layout and workshop equipment,which can assist managers in implementing the optimization decisions.

关键词： Production logistics(PL) Logistics trajectory analysis Logistics optimization Data driven Manufacturing task data chain(MTDC)