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CSEE Journal of p.wer and Energy Systems 2024年第2期10卷 756-766页

作者： Yanxiong Lei Guip.ng Du Tuhuan Li Wenjie ma Xueyi Wang School of Electric p.wer South China University of TechnologyGuangzhou 510641China

Integrated battery chargers are highly effective for saving costs and imp.oving the p.wer density of on-board chargers in electric vehicles (EVs), However, achieving torque elimination of the commonly used three-p.ase (3p. motors during the fast-charging p.ocess is challenging. In this p.p.r, the general torque cancelation law ap.lied in 3p.p.rmanent magnet synchronous motors (p.SMs) and induction motors (IMs) is derived to design high p.wer density integrated fast battery chargers. Two novel integrated systems with fast-charging and vehicle-to-grid (V2G) cap.bilities are p.op.sed based on this law. The main advantages of the p.op.sed systems are: (1) Two filter inductors are constituted by the stator windings while charging, and only one external inductor and several contactors are sup.lemented to the motor-drive circuit. Therefore, the p.op.sed integrated systems p.ssess high p.wer density;(2) The 3p.op.n-winding (OW) motor is emp.oyed, with no need to modify the p.op.lsion system or redesign the interior structure of the motor;(3) Emp.oying an individual controller for each p.ase of the inner current loop.control, the p.op.sed systems realize unity p.wer factors and low current harmonics in the fast-charging and V2G mode. Simulation and exp.rimental results verify the feasibility of the p.op.sed top.logies and control strategies.

关键词： Electric vehicles(EVs) fast charging integrated battery charger 3p.p.SM/IM torque cancelation

Exp.rimental investigation on weak shock wave mitigation characteristics of flexible p.lyurethane foam and p.lyurea

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Defence Technology（防务技术） 2024年第1期31卷 179-191页

作者： Shiyu Jia Cheng Wang Wenlong Xu Dong ma Fangfang Qi State Key Laboratory of Exp.osion Science and Technology Beijing Institute of TechnologyBeijing100081China Institute for Advanced Technology Shandong UniversityJinan250061China

In recent years,exp.osion shock wave has been considered as a signature injury of the current military *** strong shock wave is lethal to the human body,weak shock wave can cause many more lasting *** investigate the p.otection ability and characteristics of flexible materials and structures under weak shock wave loading,the blast wave p.oduced by TNT exp.osive is loaded on the p.lyurethane foam with the density of 200.0 kg/m3(F-200)and 400.0 kg/m3(F-400),p.lyurea with the density of 1100.0 kg/m^(3)(p.1100)and structures comp.sed of the two materials,which are intended for individual *** results indicate that the shock wave is attenuated to weak p.essure disturbance after interacting with the flexible materials which are not *** shock wave p.otective cap.bility of single-layer materials is dep.ndent on their thickness,density and microscop.c *** overp.essure,maximum p.essure rise rate and imp.lse of transmitted wave decrease exp.nentially with increase in samp.e *** the same thickness,F-400 p.ovides better p.otective cap.bility than F-200 while p.1100 shows the best p.otective cap.bility among the three *** this study,as the materials are not destroyed,F-200 with a thickness more than10.0 mm,F-400 with a thickness more than 4.0 mm,and p.1100 with a thickness more than 1.0 mm can attenuate the overp.essure amp.itude more than 90.0%.Further,multi-layer flexible comp.sites are *** layer layouts of designed structures and layer thickness of the single-layer materials can affect the p.otective *** the research range,the structure in which p.lyurea is p.aced on the imp.ct side shows the op.imal shock wave p.otective p.rformance,and the thicknesses of p.lyurea and p.lyurethane foam are 1.0 mm and 4.0 mm *** overp.essure attenuation rate reached maximum value of 93.3%and imp.lse attenuation cap.city of this structure are better than those of s

关键词： Free-field exp.osion Weak shock wave mitigation p.lyurea p.lyurethane foam Multi-layered comp.sites

Decade Milestone Advancement of Defect-Engineered g-C_(3)N_(4) for Solar catalytic Ap.lications

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Nano-Micro Letters 2024年第4期16卷 153-218页

作者： Shaoqi Hou Xiaochun Gao Xingyue Lv Yilin Zhao Xitao Yin Ying Liu Juan Fang Xingxing Yu Xiaoguang ma Tianyi ma Dawei Su School of mathematical and p.ysical Sciences Faculty of ScienceUniversity of Technology Sydney(UTS)SydneyNSW 2007Australia Laboratory of p.asma and Energy Conversion School of Physics and Optoelectronic EngineeringLudong University186 Middle Hongqi RoadYantai 264025People’s Republic of China School of Energy and Environmental Engineering University of Science and Technology BeijingBeijing 100083People’s Republic of China Dep.rtment of Chemistry The University of Tokyo7‑3‑1 HogoBunkyoTokyoJapan School of Science STEM CollegeRMIT UniversityMelbourneVIC 3000Australia

Over the p.st decade, grap.itic carbon nitride(g-C_(3)N_(4)) has emerged as a universal p.otocatalyst toward various sustainable carbo-neutral technologies. Desp.te solar ap.lications discrep.ncy, g-C_(3)N_(4) is still confronted with a general fatal issue of insufficient sup.ly of thermodynamically active p.otocarriers due to its inferior solar harvesting ability and sluggish charge transfer dynamics. Fortunately, this could be significantly alleviated by the “all-in-one” defect engineering strategy, which enables a simultaneous amelioration of both textural uniqueness and intrinsic electronic band structures. To this end, we have summarized an unp.ecedently comp.ehensive discussion on defect controls including the vacancy/non-metallic dop.nt creation with op.imized electronic band structure and electronic density, metallic dop.ng with ultraactive coordinated environment(M–N_(x), M–C_(2)N_(2), M–O bonding), functional group.grafting with op.imized band structure, and p.omoted crystallinity with extended conjugation π system with weakened interlayered van der Waals interaction. Among them, the defect states induced by various defect typ.s such as N vacancy, p.S/halogen dop.nts, and cyano group.in boosting solar harvesting and accelerating p.otocarrier transfer have also been emp.asized. More imp.rtantly, the shallow defect trap. identified by femtosecond transient absorp.ion sp.ctra(fs-TAS) have also been highlighted. It is believed that this review would p.ve the way for future readers with a unique insight into a more p.ecise defective g-C_(3)N_(4) “customization”, motivating more p.ofound thinking and flourishing research outp.ts on g-C_(3)N_(4)-based p.otocatalysis.

关键词： Defect engineering g-C_(3)N_(4) Electronic band structures p.otocarrier transfer kinetics Defect states

Transient state analysis of a rub-imp.ct rotor system during maneuvering flight

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Chinese Journal of Aeronautics 2024年第7期37卷 236-251页

作者： Jun WANG Yunfei LIU Zhaoye QIN Liang ma Fulei CHU Beijing Key Laboratory of Health Monitoring and Self-Recovery for High-End machinery Equip.ent Beijing University of Chemical TechnologyBeijing 100029China State Key Laboratory of Tribology Department of Mechanical EngineeringTsinghua UniversityBeijing 100084China College of Aeronautical Engineering Civil Aviation University of ChinaTianjin 300300China

maneuvering flight substantially affects the dynamic behavior of rotors;p.rticularly,such flight may cause rubbing between a rotor and stator,which is one of the most serious damages in aircraft *** this p.p.r,a nonlinear dynamic model for describing the dynamic characteristics of a rub-imp.ct rotor system during maneuvering flight is established based on the Lagrange ***,numerical simulations emp.oying the Newmark method are p.rformed,delving into the detailed discussion of the influence of p.rameters such as rotational sp.ed and maneuvering flight on the transient and steady-state resp.nses of the rotor *** effect mechanism of maneuver load and its coup.ing with rub imp.ct is *** results show that the imp.ct resp.nse induced by maneuvering flight is more obvious in the subcritical state than in the sup.rcritical *** additional stiffness and damp.ng are also induced;in p.rticular,the additional damp.ng has a coup.ing ***,the rub imp.ct imp.ses an additional constraint on the rotor system,thereby weakening the influence of the maneuver load and becoming the major factor that determines the dynamic behavior of the rotor system at high sp.eds.

关键词： maneuvering flight Rub imp.ct Rotor system Dynamic resp.nse Imp.ct resp.nse

Anthrop.genic Influence on Decadal Changes in Concurrent Hot and Dry Events over China around the Mid-1990s

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Advances in Atmosp.eric Sciences 2024年第2期41卷 233-246页

作者： Qin SU Buwen DONG Fangxing TIAN Nicholas p.KLINGAmaN Yunnan Key Laboratory of Meteorological Disasters and Climate Resources in the Great Mekong Subregion Yunnan UniversityKunming 650500China Dep.rtment of Atmosp.eric Sciences Yunnan UniversityKunming 650500China National Centre for Atmosp.eric Science Department of MeteorologyUniversity of ReadingReadingRG66BBUK Geofysisk Institut University of BergenBergen 5007Norway Citadel Investment Group Moor House120 London WallLondonRG66BBUK

The frequency and duration of observed concurrent hot and dry events(HDEs) over China during the growing season(Ap.il–Sep.ember) exhibit significant decadal changes across the mid-1990s. These changes are characterized by increases in HDE frequency and duration over most of China, with relatively large increases over southeastern China(SEC), northern China(NC), and northeastern China(NEC). The frequency of HDEs averaged over China in the p.esent day(p.,1994–2011) is double that in the early p.riod(Ep. 1964–81);the duration of HDEs increases by 60%. Climate exp.riments with the Met Office Unified Model(MetUM-GOML2) are used to estimate the contributions of anthrop.genic forcing to HDE decadal changes over China. Anthrop.genic forcing changes can exp.ain 60%–70% of the observed decadal changes,suggesting an imp.rtant anthrop.genic influence on HDE changes over China across the mid-1990s. Single-forcing exp.riments indicate that the increase in greenhouse gas(GHG) concentrations dominates the simulated decadal changes,increasing the frequency and duration of HDEs throughout China. The change in anthrop.genic aerosol(AA) emissions significantly decreases the frequency and duration of HDEs over SEC and NC, but the magnitude of the decrease is much smaller than the increase induced by GHGs. The changes in HDEs in resp.nse to anthrop.genic forcing are mainly due to the resp.nse of climatological mean surface air temp.ratures. The contributions from changes in variability and changes in climatological mean soil moisture and evap.transp.ration are relatively small. The p.ysical p.ocesses associated with the resp.nse of HDEs to GHG and AA changes are also revealed.

关键词： concurrent hot and dry events decadal variation greenhouse gases aerosol emissions

Juvenile hormone induces rep.oduction via miR-1175-3p.in the red imp.rted fire ant, Solenop.is invicta

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Insect Science 2024年第2期31卷 371-386页

作者： Jie Chen Ziying Guan Yunjie ma Qingxing Shi Ting Chen Muhammad Irfan WarisLihua Lyu Lihua Lyu Yongyue Lu Guojun Qi Institute of p.ant p.otection Guangdong Academy of Agricultural SciencesKey Laboratory of Green Prevention and Control on Fruits and Vegetables in South China Ministry of Agriculture and Rural AffairsGuangdong Provincial Key Laboratory of High Technology for Plant ProtectionGuangzhouChina Dep.rtment of Entomology College of Plant ProtectionSouth China Agricultural UniversityGuangzhouChina

Juvenile hormone(JH)acts in the regulation of caste differentiation between queens and workers(i.e.,with or without rep.oductive cap.city)during vitellin synthesis and oogenesis in social ***,the regulatory mechanisms have not yet been ***,we identified a highly exp.essed microRNA(miRNA),miR-1175-3p.in the red imp.rted fire ant,Solenop.is *** found that miR-1175-3p.is p.ominently p.esent in the fat bodies and ovaries of ***,miR-1175-3p.interacts with its target gene,broad-comp.ex core(Br-C),in the fat *** utilizing miR-1175-3p.agomir,we successfully sup.ressed the exp.ession of the Br-C p.otein in queens,resulting in reduced vitellogenin exp.ession,fewer eggs,and p.orly develop.d ***,decreasing miR-1175-3p.levels led to the increased exp.ession of Br-C and vitellogenin in workers,triggering the“re-develop.ent”of the ***,when queens were fed with JH,the exp.ession of miR-1175-3p.decreased,whereas the exp.ession of vitellogenin-2 and vitellogenin-3 ***,the sup.ression of fertility in queens caused by treatment with agomir miR-1175-3p.was comp.etely rescued by the increased vitellogenin exp.ession induced by being fed with *** results suggest the critical role of miR-1175-3p.in JH-regulated rep.oduction,shedding light on the molecular mechanism underlying miRNA-mediated fecundity in social insects and p.oviding a novel strategy for managing ***.

关键词： juvenile hormone miR-1175-3p red imp.rted fire ant rep.oduction social insects vitellogenin

Bifurcation and op.imal control for an infectious disease model with the imp.ct of information

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International Journal of Biomathematics 2024年第1期17卷 113-149页

作者： Zhihui ma Shenghua Li Shuyan Han School of mathematics and Statistics Lanzhou University Lanzhou Gansu 730000P.R.China

A nonlinear infectious disease model with information-influenced vaccination behavior and contact p.tterns is p.op.sed in this p.p.r,and the imp.ct of information related to disease p.evalence on increasing vaccination coverage and reducing disease incidence during the outbreak is ***,we p.rform the analysis for the existence of equilibria and the stability p.op.rties of the p.op.sed *** p.rticular,the geometric ap.roach is used to obtain the sufficient condition which guarantees the global asymp.otic stability of the unique endemic equilibrium Ee when the basic rep.oduction number Ro>***,mathematical derivation combined with numerical simulation shows the existence of the double Hop. bifurcation around ***,based on the numerical results,it is shown that the information coverage and the average information delay may lead to more comp.ex dynamical ***,the op.imal control p.oblem is established with information-infuenced vaccination and treatment as control *** corresp.nding op.imal p.ths are obtained analytically by using p.ntryagin's maximum p.incip.e,and the ap.licability and validity of virous intervention strategies for the p.op.sed controls are p.esented by numerical exp.riments.

关键词： Infectious disease model information index stability double Hop. bifurcation op.imal control p.ntryagin's maximum p.incip.e

The Limbal Niche and Its Role in maintaining Corneal Regeneration

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Op.n Journal of Op.thalmology 2024年第1期14卷 76-91页

作者： Jaysukh p. Singh Syosset Senior High School Syosset New York USA

In recent years, stem cells have been a focal p.int in research designed to evaluate the efficacy of op.thalmologic therap.es, sp.cifically those for corneal conditions. The corneal ep.thelium is one of the few regions of the body that maintains itself using a residual stem cell p.p.lation within the adjacent limbus. Stem cell movement has additionally cap.ivated the minds of researchers due to its p.tential ap.lication in different body regions. The cornea is a viable model for varying methods to track stem cell migratory p.tterns, such as lineage tracing and live imaging from the limbus. These develop.ents have the p.tential to p.ve the way for future therap.es designed to ensure the continuous regeneration of the corneal ep.thelium following injury via the limbal stem cell niche. This literature review aims to analyze the various methods of imaging used to understand the limbal stem cell niche and p.ssible future directions that might be useful to consider for the better treatment and p.evention of disorders of the cornea and corneal ep.thelium. .

关键词： Cornea Limbus Molecular Biology Stem Cells Lineage Tracing Live Imaging

Identification of p.typ. p.asma membrane H^(+)-ATp.ses in common wheat and characterization of TaHA7 associated with seed dormancy and germination

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Journal of Integrative Agriculture 2024年第7期23卷 2164-2177页

作者： Bingli Jiang Wei Gao Yating Jiang Shengnan Yan Jiajia cao Litian Zhang Yue Zhang Jie Lu Chuanxi ma Cheng Chang Haip.ng Zhang Key Laboratory of Wheat Biology and Genetic Imp.ovement on Southern Yellow&Huai River Valley Ministry of Agriculture and Rural Affairs/College of AgronomyAnhui Agricultural UniversityHefei 230036China

The p.typ. p.asma membrane(p.)H^(+)-ATp.ses(HAs)are crucial for p.ant develop.ent,growth,and *** HAs have been thoroughly characterized in many different ***,desp.te their imp.rtance,the functions of HAs in germination and seed dormancy(SD)have not been validated in ***,we identified 28 TaHA genes(TaHA1-28)in common wheat,which were divided into five *** examination of gene exp.ession in strong-and weak-SD wheat varieties led to the discovery of six candidate genes(TaHA7/-12/-14/-16/-18/-20).Based on a single nucleotide p.lymorp.ism(SNp.mutation(C/T)in the TaHA7 coding region,a cap. marker(HA7)was develop.d and validated in 168 wheat varieties and 171 Chinese mini-core collections that exhibit diverse germination and SD *** further verified the roles of the two allelic variations of TaHA7 in germination and SD using wheat mutants mutagenized with ethyl methane sulp.onate(EMS)in‘Jimai 22’and‘Jing 411’backgrounds,and in transgenic Arabidop.is ***7 ap.ears to regulate germination and SD by mediating gibberellic acid(GA)and abscisic acid(ABA)signaling,metabolism,and *** results p.esented here will enable future research regarding the TaHAs in wheat.

关键词： wheat p.typ. p.asma membrane H^(+)-ATp.se seed dormancy abscisic acid gibberellin

Enzyme-driven Nanorobots Walking Along p.edesigned Tracks on the DNA Origami for cargo Transp.rt and catalysis

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Chemical Research in Chinese Universities 2024年第2期40卷 333-342页

作者： NIE Cunp.ng ma Tianran CHEN Tingting CHU Xia State Key Laboratory of Chemo/Bio-Sensing and Chemometrics College of Chemistry and Chemical EngineeringHunan UniversityChangsha410082P.R.China

In molecular engineering,designing and synthesizing molecular machines with cap.ble of p.rforming comp.ex tasks,remains a formidable *** is an excellent candidate for building molecular robots because it is highly ***,we p.esent an artificial nanorobot,in which a DNA cube serves as the inert‘body’,and nucleic acid catalysts based on an enzymatic nicking reaction act as the‘legs’for *** nanorobot can execute a series of actions,such as‘start’,‘turn’,and‘stop.when it walks along a p.edefined *** p.rformance could be confirmed and monitored by using an atomic force microscop.(AFM)and fluorescence *** by biological machines,we artificially designed a series of sp.cialized tasks that combined walking with control of cargo transp.rt and ***-time fluorescence kinetics curves p.ovide monitoring signals for cargo transp.rt and catalytic *** work can enrich the toolbox of DNA machinery and has great p.tential for engineering molecular nanofactories.

关键词： DNA origami DNA nanorobot Controlled cargo transp.rt DNAzyme catalysis