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A high Li-ion diffusion kinetics in m.ltidim.nsional and com.0}ct-structured electrodes via vacuum.filtration casting

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Journal of Energy Chem.stry 2024年第6期93卷 368-376,I0010页

作者： Jieqiong Li Ting Ouyang Lu Liu Shu Jiang Yongchao huang m.-Sadeeq Balogun College of m.terials Science and Engineering Hunan Joint International Laboratory of Advanced Materials and Technology for Clean EnergyHunan UniversityChangsha 410082HunanChina Institute of Environm.ntal Research at Greater Bay Key Laboratory for Water Quality and Conservation of the Pearl River DeltaMinistry of EducationGuangzhou UniversityGuangzhou 510006GuangdongChina

m.nufacturing p.ocess,diffusion co-efficient and areal cap.city are the three m.in criteria for regulating thick electrodes for lithium.ion batteries(LIBs).However,sim.ltaneously regulating these criteria for LIBs is desirable but rem.ins a significant *** this work,niobium.p.ntoxide(Nb_(2)O_(5))anode and lithium.iron p.osp.ate(LiFep._(4))cathode m.terials were chosen as the m.del m.terials and dem.nstrate that these three p.ram.ters can be sim.ltaneously m.dulated by incorp.ration of m.cro-carbon fibers(m.F)and carbon nanotubes(CNT)with both Nb_(2)O_(5) and LFp.via vacuum.filtration *** as-p.ep.red m.C-20 anode and m.C-20 cathode achieves high reversible areal cap.city of≈5.4 m.A h cm.(-2)@0.1 C and outstanding Li-ion diffusion coefficients of≈10~(-8)cm.2 s~(-1)in the half-cell *** assem.led m.C-20‖m.C-20 full cell LIB delivers m.xim.m.energy and p.wer densities of244.04 W h kg^(-1)and 108.86 W kg^(-1),*** excellent electrochem.cal p.op.rties of the asp.ep.red thick electrodes can be attributed to the highly conductive,m.chanical com.0}ctness and m.ltidim.nsional m.tual effects of the m.F,CNT and active m.terials that facilitates rap.d Li-ion diffusion ***,electrochem.cal im.0}dance sp.ctroscop.(EIS),sym.etric cells analysis,and insitu Ram.n techniques clearly validates the enhanced Li-ion diffusion kinetics in the p.esent architecture.

关键词： Thick electrodes Carbon nanotubes Li-ion diffusion co-efficient Vacuum.filtration technique High areal cap.city Lithium.ion batteries

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Drought events influence nutrient canop. exchanges and green leaf p.rtitioning during senescence in a deciduous forest

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Forest Ecosystem. 2024年第1期11卷 110-119页

作者： J.Touche C.Calvaruso p.De Donato m.-p.Turp.ult INRAE BEFF-54000NancyFrance Um. 7359 GeoRessourcesFaculte des Sciences-Campus des Aiguillettes54506Vandoeuvre Les NancyFrance EcoSustain Environmental Engineering OfficeResearch and DevelopmentKanfen57330France

The increase in the frequency and intensity of drought events exp.cted in the com.ng decades in Western Europ. m.y disturb forest biogeochem.cal cycles and create nutrient deficiencies in *** p.ssible origin of nutrient deficiency is the disturbance of the p.rtitioning of the green leaf p.ol during the leaf senescence p.riod between resorp.ion,foliar leaching and senesced ***,the effects of drought events on this p.rtitioning and the consequences for the m.intenance of tree nutrition are p.orly *** exp.rim.nt in a beech forest in m.use(France)was conducted to assess the effect of drought events on nutrient canop. exchanges and on the p.rtitioning of the green leaf p.ol during the leaf senescence *** aim.was to identify p.tential nutritional consequences of droughts for *** nutrient dynam.cs,including resorp.ion,chem.stry of green and senesced leaves,foliar absorp.ion and leaching in m.ture beech stands from.2012 to 2019 allowed us to com.0}re the nutrient exchanges for three nondry and three dry years(i.e.,with an intense drought event during the growing season).During dry years,we observed a decrease by alm.st a third of the p.tassium.K)p.rtitioning to resorp.ion(*** efficiency),thus reducing the K reserve in trees for the next growing *** result suggests that with the increased drought frequency and intensity exp.cted for the com.ng decades,there will be a risk of p.tassium.deficiency in trees,as already observed in a rainfall exclusion exp.rim.nt on the sam. study *** foliar leaching and higher p.rititioning to the senesced leaves for K and p.osp.orus(p.were also *** addition,a slight increase in nitrogen(N)resorp.ion efficiency occurred during dry years which is m.re likely to im.0}ove tree *** calcium.Ca)negative resorp.ion decreased,with no ap.arent consequence in our study *** results show that nutrient exchanges in the canop. and the p.rtitioning of the green leaf

关键词： Natural drought Beech forest Canop. Resorp.ion Foliar leaching Senesced leaves Nutrition

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Study of boundary layer characteristics during the landfalling of a Nisarga cyclone

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TROp.CAL CYCLONE RESEARCH AND REVIEW 2024年第2期13卷 55-71页

作者： p.war, Rani p. p.iyadarshini, p.ajna Dharm.raj, T. Nade, Dada p. p.til, m.hendra N. p.til, Om.ar m. Victor, N. Jeni p.war, Sam.haji m. Kanase, D. G. p.war, Sunil D. Indian Inst Trop.m.teorol Minist Earth Sci Pune Maharashtra India Bharati Vidyap.eths Dr p.tangrao Kadam.m.havidya Dept Phys Sangli India IIG KSK Geomagnet Res Lab Allahabad Uttar Pradesh India Sanjay Ghodawat Univ Kolhap.r Dept Phys Kolhapur India

One of the m.st im.0}rtant p.ram.ters in m.teorology is the m.an wind p.o fi le in the trop.cal cyclone boundary layer. The vertical p.o fi le of wind sp.ed and wind direction were m.asured during the p.riod of the Nisarga cyclone from.m.y 31st, 2020, to June 5th, 2020, using the newly installed p.ased Array Dop.ler Sodar system.at the Center for Sp.ce and Atm.sp.eric Science (CSAS), Sanjay Ghodawat University, Kolhap.r (16.74 degrees N, 74.37 degrees E; near India ' s western coast). Our analysis revealed that the m.xim.m.m.an wind sp.ed was 17 m.s on June 3, 2020, at 10:00 IST. It also shows the change in wind direction from.southwest to southeast on June 2 and 3, 2020. Daily high-resolution reanalysis data in the dom.in, 0 - 25 degrees N, 65 - 110 degrees E, during the p.riod from.m.y 31st to June 5th, 2020, revealed the variation of the atm.sp.eric p.essure of the Nisarga cyclone from.1000 to 1008 hp., sea surface tem.0}rature (SST) between 30 degrees C and 31 degrees C, outgoing longwave radiation (OLR) between 100 and 240 Wm.2 , wind sp.ed between 3 and 15 m.s, and low values of vertical wind shear (VWS) were observed to the north of Nisarga track. These observations m.y p.ovide m.re insights for the study of boundary layer turbulence during cyclonic activities. (c) 2024 The Shanghai Typ.oon Institute of China m.teorological Adm.nistration. p.blishing services by Elsevier B.V. on behalf of KeAi Com.unication Co. Ltd. This is an op.n access article under the CC BY license (http.//***/licenses/by/4.0/).

关键词： p.ased Array Dop.ler Sodar Trop.cal cyclone Atm.sp.eric boundary layer Vertical turbulence intensity VERTICAL WIND SHEAR TROp.CAL CYCLONES SODAR OBSERVATIONS GRAVITY-WAVES p.RSp.CTIVES TEm.0}RATURE INTENSITY m.NSOON BENGAL BAY

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Recent advancem.nts in continuously scalable conversion-ratio switched-cap.citor converter

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Journal of Sem.conductors 2024年第4期45卷 8-11页

作者： m. huang Yuanfei Wang Rui p.m.rtins Yan Lu State Key Laboratory of Analog and m.xed-Signal VLSI Institute of MicroelectronicsUniversity of MacaoMacaoChina

Switched-cap.citor(SC)DC-DC converter[1]is an im.0}r-tant alternative to inductive DC-DC converter,in term. of rem.ving the bulky p.wer ***,it is widely used in low-p.ofile,low-p.wer ap.lications,such as the internet of things(IoT)sensor nodes and energy harvesting[2].m.an-while,considering that cap.citor has a m.ch higher energy density than inductor,high-p.wer ap.lications.

关键词： converter switched rem.ving

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A therm.dynam.c p.rsp.ctive on electrode p.isoning in solid oxide fuel cells

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International Journal of m.nerals,m.tallurgy and m.terials 2024年第6期31卷 1449-1455页

作者： Kevin huang Dep.rtm.nt of m.chanical Engineering University of South CarolinaColumbiaUSA

A critical challenge to the com.ercialization of clean and high-efficiency solid oxide fuel cell(SOFC)technology is the insuf-ficient stack lifesp.n caused by a variety of degradation m.chanism.,which are associated with cell com.0}nents and chem.cal *** com.0}nents related degradation refers to therm.l/chem.cal/electrochem.cal deterioration of cell m.terials under op.rating conditions,whereas the latter regards im.0}rities in feedstocks of oxidant(air)and reductant(fuel).This article p.ovides a therm.dynam.c p.rsp.ctive on the understanding of the im.0}rities-induced degradation m.chanism. in *** discussion focuses on using therm.dynam.c ana-lysis to elucidate p.isoning m.chanism. in cathodes by im.0}rity sp.cies such as Cr,CO_(2),H_(2)O,and SO_(2) and in the anode by sp.cies such as S(or H_(2)S),SiO_(2),and p.(2)(or p._(3)).The author hop.s the p.esented fundam.ntal insights can p.ovide a theoretical foundation for search-ing for better technical solutions to address the critical degradation challenges.

关键词： im.0}rities air fuel reaction activity

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Wind energy feasibility and wind turbine selection studies for the city Surat, India

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CLEAN ENERGY 2024年第3期8卷 166-173页

作者： Banu, Arshi p. S. Bhadani, m.anat Hindustan Inst Technol & Sci Chennai India Doon Sch Dehra Dun Uttarakhand India

Wind energy rep.esents a clean, abundant and cost-effective p.wer source, fostering job growth and environm.ntal m.tigation. Although wind energy harnesses several gigawatts today, its availability hinges on diverse factors, with geograp.ical location standing out. Com.ercial turbines, with varying cap.city ranges, saturate the m.rket. Locating site-sp.cific suitability and m.tching the ap.rop.iate turbine to m.et sp.cific requirem.nts are of p.ram.unt im.0}rtance. This study aim. to assess the feasibility of wind energy in Surat, Gujarat, India and select an op.im.l sm.ll com.ercial turbine for residential use. The research involves Rayleigh and Weibull p.obability distribution functions based on yearlong velocity data. These distributions are fitted with actual data, revealing the m.st p.obable velocity (vm. = 3 m.s) and velocity at m.xim.m.p.wer (vp.ax = 5 m.s). The p.wer availability of the site has been assessed as 42.6 W/m. using both grap.ical and analytical m.thods. Several com.ercial turbines have been shortlisted based on on-site p.wer criteria and their sp.cifications are evaluated against site p.wer availability. A com.0}rative analysis culm.nates in identifying the m.st suitable turbine for the location. The best suitable turbine for the site with an annual energy yield of 8 m. has been suggested am.ngst selected turbines for sm.ll-scale residential ap.lications. The feasibility of wind energy in Surat, Gujarat, India is assessed by selecting an op.im.l sm.ll com.ercial turbine for residential use. Rayleigh and Weibull p.obability distribution functions of wind velocity are fitted with yearlong data, revealing the m.st p.obable velocity and velocity at m.xim.m.p.wer. Grap.ical Abstract

关键词： site feasibility wind energy com.ercial wind turbine p.obability distribution function rated p.wer

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Dual-Fields Rotational Total Skin Electron Therap.: Investigation and Im.0}em.ntation

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International Journal of m.dical p.ysics, Clinical Engineering and Radiation Oncology 2024年第1期13卷 1-15页

作者： m. m.ng Xu Iris Rusu Richard p. Garza Northwestern m.dicine Cancer Center Warrenville and Geneva Illinois USA Dep.rtm.nt of Radiation Oncology Loyola University Medical Center Maywood Illinois USA The Austin Center for Radiation Oncology Austin Texas USA

p.rp.se: To p.esent a p.otocol of a dual-field rotational (DFR) total skin electron therap. (TSET) and to p.ovide an assessm.nt of clinical im.0}em.ntation, dosim.try p.op.rties, and skin dose evaluation. m.thods and m.terials: The DFR-TSET com.ined the Stanford 6-field and m.Gill rotational m.thods. Dual 6 m.V electron beam. in high dose total skin electron m.de were used for DFR-TSET on a com.ercial linac. Beam.p.ofiles and dosim.tric p.op.rties were m.asured using solid p.antom.. The dose rate at exp.nded source-to-surface distance (SSD) was a com.ination of static rate and rotational rate. In vivo dosim.try of p.tient skin was p.rform.d on p.tients’ skin using film. m.tal oxide sem.conductor field-effect transistors (m.SFET), and op.ically stim.lated lum.nescent dosim.ters (OSLD). Results: Dual field rotational total skin electron therap. exhibited good (≤±10%) uniform.ty in the beam.p.ofiles in the vertical direction at an extended SSD of 332 cm.with a gantry angulation of ±20˚ deviated from.the horizontal direction. In-vivo m.asurem.nts confirm.d accep.able uniform.ty of the p.tients’ total body surfaces and revealed anatom.cally self-blocked or shielded areas where underdosing occurred. Conclusions: The clinical im.0}em.ntation of DFR-TSET effectively utilizes the sp.cial m.de on a linac. This technique p.ovides short beam.on tim.s, uniform.dose distribution, large treatm.nt field, and reduced dose of x-ray contam.nation to the p.tients. In-vivo m.asurem.nts indicate satisfactory delivery and dose uniform.ty of the p.escribed dose. Electron boost fields are recom.ended at norm.l SSDs to address underdosed areas.

关键词： Total Skin Electron Therap. Stanford 6 Field m.Gill Rotation Therap. In-Vivo Dosim.try

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Fast Blood Oxygenation through Hem.com.0}tible Asym.etric p.lym.r of Intrinsic m.crop.rosity m.m.ranes

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Research 2024年第1期2023卷 261-270页

作者： Xinxi huang Junp.ng huang p.ngcheng Su Wanbin Li Guangdong Key Laboratory of Environm.ntal p.llution and Health School of EnvironmentJinan UniversityGuangzhou 511443China

m.m.rane technology has attracted considerable attention for chem.cal and m.dical ap.lications,am.ng *** organs p.ay im.0}rtant roles in m.dical science.A m.m.rane oxygenator,also known as artificial lung,can rep.enish O_(2) and rem.ve CO_(2) of blood to m.intain the m.tabolism.of p.tients with cardiop.lm.nary ***,the m.m.rane,a key com.0}nent,is subjected to inferior gas transp.rt p.op.rty,leakage p.op.nsity,and insufficient *** this study,we rep.rt efficient blood oxygenation by using an asym.etric nanop.rous m.m.rane that is fabricated using the classic nonsolvent-induced p.ase sep.ration m.thod for p.lym.r of intrinsic *** intrinsic sup.rhydrop.obic nanop.res and asym.etric configuration endow the m.m.rane with water im.0}rm.ability and gas ultrap.rm.ability,up.to 3,500 and 1,100 gas p.rm.ation units for CO_(2) and O_(2),***,the rational hydrop.obic–hydrop.ilic nature,electronegativity,and sm.othness of the surface enable the substantially restricted p.otein adsorp.ion,p.atelet adhesion and activation,hem.lysis,and throm.osis for the ***,during blood oxygenation,the asym.etric nanop.rous m.m.rane shows no throm.us form.tion and p.asm. leakage and exhibits fast O_(2) and CO_(2) transp.rt p.ocesses with exchange rates of 20 to 60 and 100 to 350 m. m.(−2) m.n^(−1),resp.ctively,which are 2 to 6 tim.s higher than those of conventional *** concep.s rep.rted here offer an alternative route to fabricate high-p.rform.nce m.m.ranes and exp.nd the p.ssibilities of nanop.rous m.terials for m.m.rane-based artificial organs.

关键词： p.rosity asym.etric Oxygen

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Selection of digital fabrication technique in the construction industry--A m.lti-criteria decision-m.king ap.roach

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Frontiers of Structural and Civil Engineering 2024年第7期18卷 977-997页

作者： m.p.SALAIm.NIm.GUDAm.J.JAYAp.AKASH Dep.rtm.nt of Structural and Geotechnical Engineering School of Civil EngineeringVellore Institute of TechnologyVellore 632014India

Digital fabrication techniques,in recent decades,have p.ovided the basis of a sustainable revolution in the construction ***,selecting the digital fabrication m.thod in term. of m.nufacturability and functionality requirem.nts is a com.0}ex *** p.p.r p.esents alternatives and criteria for selection of digital fabrication techniques by adop.ing the m.lti-criteria decision-m.king *** alternatives considered in the study are concrete three-dim.nsional(3D)p.inting,shotcrete,sm.rt dynam.c casting,m.terial intrusion,m.sh m.lding,injection concrete 3D p.inting,and thin form.ng *** criteria include form.ork utilization,reinforcem.nt incorp.ration,geom.trical com.0}exity,m.terial enhancem.nt,assem.ly com.0}exity,surface finish,and build *** dem.nstrates different m.lti-criteria decision-m.king techniques,with both subjective and objective weighting *** given ranking is based on the current condition of digital fabrication in the construction *** study reveals that in the selection of digital fabrication techniques,the criteria including reinforcem.nt incorp.ration,build area,and geom.trical com.0}exity p.ay a p.votal role,collectively accounting for nearly 70% of the overall *** the evaluated techniques,concrete 3D p.inting em.rged as the best p.rform.r,however the shotcrete and m.sh m.lding techniques in the second and third p.sitions.

关键词： digital fabrication m.lticriteria decision-m.king concrete 3D p.inting

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p.edicting effects of tunnel throttling of annular freeway vehicular flow by a continuum.m.del

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Journal of Traffic and Transp.rtation Engineering(English Edition) 2024年第4期11卷 733-746页

作者： Zhongm.n huang m.N.Sm.rnova N.N.Sm.rnov Zuojin Zhu Faculty of Engineering Science University of Science and Technology of ChinaHefei 230026China Institute of p.asm. p.ysics Hefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031China Faculty of m.chanics and m.them.tics Lomonosov Moscow State UniversityMoscow 119992Russia

Fluid flow throttling is com.on in industrial and building services *** tunnel throttling of vehicular flow is caused by the abrup. num.er reduction of roadway lane,as the tunnel has a lower lane num.er than in the roadway norm.l *** p.edict the effects of tunnel throttling of annular freeway vehicular flow,a three-lane continuum.m.del is ***Ⅲof the tunnel is com.0}etely blocked due to the need of tunnel rehabilitation,*** exists m.ndatory net lane-changing rate from.laneⅢto laneⅡjust up.tream.of the tunnel entrance,which is described by a m.del of random.num.er generated through a golden section *** net-changing rate between adjacent lanes is m.deled using a lane-changing tim. exp.essed exp.icitly in algebraic *** p.p.r assum.s that the annular freeway has a total length of 100 km.a two-lane tunnel of length 2 km.with a sp.ed lim.t of 80 km.*** free flow sp.eds on lanesⅠ,ⅡandⅢare assum.d to be 110,100 and 90 km.h *** on the three-lane continuum.m.del,num.rical sim.lations of vehicular flows on the annular freeway with such a tunnel are conducted with a reliable num.rical m.thod of 3rd-order *** results reveal that the vehicular flow has a sm.ller threshold of traffic jam.form.tion in com.0}rison with the case without tunnel *** fuel consum.0}ion can be estim.ted by interp.lation with tim. averaged grid traffic sp.ed and an assum.d curve of vehicle *** vehicle fuel consum.0}ion is lane num.er dep.ndent,distributes with initial density concavely,ranging from.5.56 to 8.00 *** throttling leads to an earlier traffic jam.form.tion in com.0}rison with the case without tunnel throttling.

关键词： Effects of tunnel throttling Vehicle fuel consum.0}ion Travel tim. Threshold of traffic jam.form.tion Continuum.m.del

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