检索结果-南通市图书馆

Quantum anomalous h.ll effect in two-d.mensional Cu-d.cyanobenzene coloring-triangle lattice

在线全文

学校读者我要写书评

暂无评论

Nano Research 2020年第6期13卷 1571-1575页

作者： Yixuan Gao Yu-Yang Zh.ng Jia-Tao sun Lizh. Zh.ng Sh.ngbai Zh.ng Sh.xuan d. Institute of Ph.sics Chinese Academy of SciencesBeijing100190China University of Ch.nese Acad.my of Sciences Beijing100049China CAS Center for Excellence in Topological Quantum Computation Beijing100190China Sch.ol of Information and.Electronics MIIT Key Laboratory for Low-Dimensional Quantum Structure and DevicesBeijing Institute of TechnologyBeijing100081China Rensselaer Polytech.ic Institute TroyNew York12180USA Songsh.n Lake Materials Laboratory Dongguan523808China

Metrics d.tails Abstract Magnetic two-d.mensional(2d.topological insulators with.spontaneous magnetization h.ve been pred.cted.to h.st quantum anomalous h.ll effects(QAh.s).For organic topological insulators,th. QAh. only exists in h.neycomb or Kagome organometallic lattices based.on th.oretical ***,coloring-triangle(CT)lattice h.s been found.to be math.matically equivalent to a Kagome lattice,suggesting a potential 2d.lattice to realize ***,based.on first-principles calculations,we pred.ct an organometallic CT lattice,Cu-d.cyanobenzene(d.B),to be a stable QAh.*** exh.bits ferromagnetic(FM)properties as a result of th. ch.rge transfer from metal atoms to d.B ***,based.on th. Ising mod.l,th. Curie temperature of th. FM ord.ring is calculated.to be around.100 *** th. Ch.rn numbers and.th. ch.ral ed.e states of th. semi-infinite Cu-d.B ed.e structure,wh.ch.occur insid. th. spin-orbit coupling band.gap,confirm its nontrivial topological *** make th. Cu-d.B CT lattice an id.al cand.d.te to enrich.th. family of QAh.insulators.

关键词： quantum anomalous h.ll effect organic topological insulators coloring-triangle lattice Kagome lattice

Basic Spectroscopy Performance of Nd.+ and.Rh.d.mine B d.ped.Polymer Fibers

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Ch.nese Journal of Lasers 1999年第5期B8卷 3-5页

作者： h. Ming Z. C. Liang K. Liu Q. Zh.ng(d.partment of Ph.sics, d.partment of Materials Science and.EngineeringUniversity of Science and.Tech.ology of Ch.na, h.fei 230026, Ch.na)A. B. Fed.tov X. d. Xiao M. M. T. Loy(d.partment of Ph.sics, h.ng Kong Univer d.partment of Ph.sics University of Science and Technology of ChinaHefei 230026China d.partment of Materials Science and.Engineering University of Science and Technology of ChinaHefei 230026China d.partment of Ph.sics Hong Kong University of Science and TechnologyHong Kong

Th. spectroscopy properties of Nd.+ d.ped.polymer fiber with.532 nm pumping rad.ation is stud.ed. It is found.th.t th. emission peak near 380 nm is attributed.th. transition from 2 G7/2 and. G5/5/2 to ground.level 4I9/2, and.th. florescence intensity of Nd.+ d.ped.polymer fiber with.70 ppm concentration and.650 μm cord.d.ameter increases as th. fiber is sh.rtened.from 89 cm to 15cm and.d.creases again for furth.r sh.rtening to 8cm. Both.th. ad.antages and.d.sad.antages of Nd.+ d.ped.polymer fiber compared.with.Rh.d.mine B d.ped.polymerfiber are d.scussed.

关键词： polymer fiber speetroscopy Nd.+ d.ped Rh.d.mine B d.ped

Green Oxid.tion of Isoch.omans to Isoch.omanones with.Molecular Oxygen Catalyzed.by a Tetranuclear Vanad.um Cluster

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Ch.nese Journal of Ch.mistry 2023年第16期41卷 1967-1972页

作者： h.ixin h.ang Baokuan Ch.n Yiru Fu Jing sun Yanfeng Bi Ming-d.ng Zh.u Sch.ol of Petroch.mical Engineering Liaoning Petrochemical UniversityFushunLiaoning 113001China College of Ch.mical Engineering Shenyang University of Chemical TechnologyShenyangLiaoning 110142China

Compreh.nsive Summary Isoch.omanone is th. core structure of many bioactive *** oxid.tion of isoch.omans is one of lead.ng meth.d. for th. construction of isoch.omanones,wh.le most establish.d.processes remain suffering from th. use of environmentally unfriend.y metal oxid.nts,h.rsh.reaction cond.tions,and.th. d.fficulty in catalyst recycling and.prod.ct ***,we report a convenient,cost-effective,and.green meth.d.for th. synth.sis of h.gh.value ad.ed.isoch.omanones via isoch.oman oxid.tions with.O_(2) by a novel h.terogeneous vanad.um cluster catalyst(Cat.1)und.r mild.*** reaction protocol d.monstrates h.gh.catalytic activity with.good.catalyst recyclability and.reusability for a wid. scope of substrates.

关键词： Isoch.omanone Vanad.um cluster Green catalysis Isoch.oman oxid.tion h.terogeneous Crystal engineering Organocatalysis C-h.activation

Th. past,present,and.future of th. Siberian Grouse(Falcipennis falcipennis)und.r glacial oscillations and.global warming

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Avian Research 2022年第1期13卷 57-63页

作者： Wend.ng Xie Kai Song Siegfried.Klaus Jon E.Swenson Yue-h.a sun Key Laboratory of Animal Ecology and.Conservation Biology Institute of ZoologyChinese Academy of SciencesBeijing100101China College of Life Science Hebei UniversityBaoding071002China Lind.nh.h. 5 D-07749JenaGermany Faculty of Environmental Sciences and.Natural Resource Management Norwegian University of Life SciencesPO Box 5003NO-1432ÅsNorway

Global climate ch.nge h.s a significant effect on species,as environment cond.tions ch.nge,causing many species'd.stributions to *** th. last th.ee million years,th. earth.h.s experienced.glacial oscillations,forcing some species to survive in ice-free refugia d.ring glacial period. and.th.n d.sperse *** th.s stud.,by assessing th. potential d.stribution of Siberian Grouse(Falcipennis falcipennis),we used.Global Circular Mod.ls and.Representative Concentration Path.ays to mod.l th.ir pattern of range ch.nges d.ring glacial oscillations and.th. potential impact of present global *** used.158 location record. of Siberian Grouse to generate a full climate mod.l using 19 bioclimate variables in *** d.scard.d.variables with.a correlation coefficient larger th.n 0.8 and.relatively lower mod.ling contributions between each.pair of correlated.*** th. remaining variables,we created.a normally uncorrelated.simple climate mod.l to pred.ct th. possible d.stribution of Siberian Grouse from th. most recent Ice Age to present and.to *** we ad.ed.geograph.cal d.ta and.th. h.man interference ind.x to construct a multiple factor full mod.l to evaluate wh.ch.were important in explaining th. d.stribution of Siberian *** Total Suitability Zone(P≥0.33)of Siberian Grouse is about 243,000km^(2) and.th. Maximum Suitability Zone(P≥0.66)is 36,000km^(2) and.is confined.to th. Russian Far *** h.bitat mod.ling suggested.th.t annual precipitation,annual mean temperature,and.th. d.stance from lakes are th. most explanatory variables for th. current d.stribution of Siberian *** d.stribution center moved.to th. south.ast d.ring th. Last Glacial Maximum and.spread.back to th. north.est after th. ice melted.and.temperatures *** total area range of Siberian Grouse experienced.a d.amatic loss d.ring th. Last Glacial *** warming is presently forcing th. Siberian Grouse to migrate north.ard.with.a contraction of

关键词： Climate ch.nge Falcipennis falcipennis Ice age refugia Last glacial maximum

Th. Impact of Leptospirosis h.alth.Ed.cation Mod.le (Lh.M) on Ch.nges of Knowled.e, Attitud. and.Practice (KAP) among Army Personnel in North.astern Malaysia

在线全文

学校读者我要写书评

暂无评论

Open Journal of Epid.miology 2020年第2期10卷 146-157页

作者： Y. Siti Sara B. d. Aziah.Y. N. Azwany S. Moh.0}Nazri W. M. Zah.rud.in A. Nabilah.h. Siti Asma’ I. Zalih. Public h.alth.d.vision Selangor State Health Department Ministry of Health Selangor Malaysia d.partment of Community Med.cine School of Medical Sciences Universiti Sains Malaysia Kelantan Malaysia d.partment of Med.cal Microbiology & Parasitology School of Medical Sciences Universiti Sains Malaysia Kelantan Malaysia Population h.alth.& Preventive Med.cine d.scipline Faculty of Medicine Universiti Teknologi MARA Selangor Malaysia

Community-based.interventions in prevention and.control of leptospirosis, h.ve been uniformly unsuccessful. Ind.vid.al counseling and.h.alth.ed.cation play an important role in th. prevention and.control of th. d.sease. Th. aim of th.s stud. was to compare th. effect of intervention on th. knowled.e, attitud. and.practice (KAP) score on leptospirosis among th. army personnel after receiving a h.alth.ed.cation given. A valid.ted.questionnaire was used.to assess knowled.e, attitud. and.practice at pre- and.post-intervention. A total of 188 army personnel from th. two camps involved.in th.s stud. with.94 respond.nts in control and.intervention groups respectively. Leptospirosis h.alth.Ed.cation Mod.le (Lh.M) was given to th. intervention group. Th.re was significant improvement in knowled.e score before and.after intervention d.ne (mean d.fference = 24.25, 95% CI: 21.93, 26.56;p −14.13, 95% CI: −15.82, −12.45;p −0.72, 1.55;p > 0.05). For th. intervention effect, th. subjects in intervention group h.d.significantly h.gh.r mean attitud. score as compared.to th. subjects in control group (mean d.fference = −2.12, 95% CI: −2.99, −1.24;p −0.47, 1.98;p > 0.05). For th. intervention effect regard.ess of time, th. subjects in intervention group h.d.significantly h.gh.r mean practice score as compared.to th. subjects in control group (mean d.fference = 4.16, 95% CI: 2.80, 5.52;p h. leptospirosis h.alth.ed.cation mod.le was found.to cause improvement in KAP score in th. intervention group.

关键词： Army Personnel Lh.M Knowled.e Attitud. Practice

Geoch.mistry and.genesis of th. Nad.n Nb-enrich.d.arc basalt in th. d.olong mineral d.strict,western Tibet:Ind.cation of rid.e subd.ction

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Geoscience Frontiers 2022年第1期13卷 230-243页

作者： Tian-Yu Zh.ng Jiangh.ng d.ng Ming Wang Cai Li Lipeng Zh.ng Weid.ng sun Center of d.ep Sea Research Institute of OceanologyCenter for Ocean Mega-ScienceChinese Academy of SciencesQingdao 266071China Laboratory for Marine Mineral Resources Qingdao National Laboratory for Marine Science and TechnologyQingdao 266237China College of Earth.Sciences Jilin UniversityChangchun 130061China Sch.ol of Marine Sciences University of Chinese Academy of SciencesBeijing 100049China

Th. d.olong mineral d.strict in western Tibet is one of th. largest porph.ry Cu–Au d.posit field. with.significant metallogenic potential in *** tectonic environment relevant to Early Cretaceous Cu–Au mineralization remains *** we report new wh.le-rock major and.trace element,and.Sr-Nd.h.-Pb isotopic d.ta for th. newly d.scovered.basalt in th. Nad.n area,d.olong mineral d.strict,to d.ciph.r th.ir genesis and.furth.r constrain th. tectonic environment.A contemporaneous rh.olite sample interbed.ed.with.th. basalt in th. lower part of th. volcanic section in th. Nad.n area yield. an LA-ICP-MS zircon U–Pb age of 122.5±1.2 *** basalt samples exh.bit h.gh.K calc-alkaline/sh.sh.nite properties and.are enrich.d.in h.gh.field.strength.elements,e.g.,h.gh.Ti O_(2)(1.43–1.79 wt.%)and.Nb(14.6–19.5 ppm)contents,with.h.gh.Nb/La ratios(0.4–0.6),wh.ch.are compositionally comparable to th.se of Nb-enrich.d.arc basalts(NEABs).Th.(^(87) Sr/^(86) Sr)iratios of 0.7052 to 0.7056,negative eNd.t)(-0.7 to-0.2)and.eh.(t)values(+6.0 to+6.5),and.h.gh.^(206) Pb/^(204)Pb)i,(^(207) Pb/^(204)Pb)i,(^(208) Pb/^(204)Pb)iand.ratios(18.522 to 18.561,15.641 to 15.645 and.38.679 to 38.730,respectively)suggest th.t th. Nad.n NEABs are more enrich.d.th.n th.se of th. island.arc basalts(IABs)in th. *** sligh.ly enrich.d.rad.ogenic isotopes for th. Nad.n NEABs ind.cate th.t th. subd.cting sed.ments play an important role in th. ***,th.ir h.gh.Nb,Ti,and.Cu contents ind.cate th.t th. source mantle wed.e was metasomatized.by slab *** Nad.n NEAB and.oth.r coeval magmatic rocks in th. d.olong mineral d.strict,includ.ng ad.kite,OIB-like basalt,MORB-type basalt,A-type rh.olite,and.common IAB,are typical rock assemblages of rid.e *** infer th.t th. d.olong mineral d.strict were formed.by rid.e subd.ction in th. Early Cretaceous.

关键词： Tibet d.olong porph.ry Cu-Au d.posit Nb-enrich.d.arc basalt Teth.s ocean Rid.e subd.ction

Boosting zinc anod. d.rability th.ough.synergistic inner h.lmh.ltz plane and.interfacial electric field.regulation

在线全文

学校读者我要写书评

暂无评论

Science Bulletin 2024年第13期69卷 2025-2029页

作者： h.o Tan Ch.o Meng Tong sun Xing-Long Wu h.ng Liu Jian-Jun Wang State Key Laboratory of Crystal Materials Shandong UniversityJinan 250100China College of Ch.mistry and.Ch.mical Engineering Qingdao UniversityQingdao 266071China MOE Key Laboratory for UV Ligh.-Emitting Materials and.Tech.ology Department of PhysicsNortheast Normal UniversityChangchun 130024China Jinan Institute of Quantum Tech.ology Jinan BranchHefei National LaboratoryJinan 250101China Sh.nzh.n Research.Institute Shandong UniversityShenzhen 518057China

As th. need.for energy storage d.vices escalates,aqueous zincion batteries(ZIBs)h.ve risen as a promising alternative to th. wid.ly used.Li-ion batteries,offering intrinsic safety,environmental compatibility,and.cost ad.antages,positioning th.m as attractive energy storage systems for th. future[1,2].h.wever,ch.llenges such.as d.nd.ite growth.on Zn anod.s,stemming from uneven electric field. on th. surface and.active water sid. reactions,compromise cycling stability and.lifespan,posing significant h.rd.es for th. practical application of ZIBs[3,4].To mitigate th.se issues,strategies like electrolyte optimization,artificial solid.electrolyte interph.se(SEI)layers,and.current collector mod.fications h.ve been proposed.5,6].Neverth.less,most long-cycle experiments are cond.cted.at low current d.nsities and.d.position capacities,with.h.gh.current d.nsity and.capacity operations typically lasting less th.n 1000 h.7].

关键词： electrolyte d.rability offering

Evaluation of CORd.X regional climate mod.ls in simulating temperature and.precipitation over th. Tibetan Plateau

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Atmosph.ric and.Oceanic Science Letters 2018年第3期11卷 219-227页

作者： GUO d.ng-Lin sun Jian-Qi YU En-Tao Nansen-Zh. International Research.Centre Institute of Atmospheric PhysicsChinese Academy of Sciences Key Laboratory of Meteorological d.saster Ministry of Education/Collaborative Innovation Center on Forecast and Evaluation of Meteorological DisastersNanjing University of Information Science & Technology Joint Laboratory for Climate and.Environmental Ch.nge Chengdu University of Information Technology

Using a regional climate mod.l（RCM） is generally regard.d.as a promising approach.in research.ng th. climate of th. Tibetan Plateau, d.e to th. ad.antages provid.d.by th. h.gh.resolutions of th.se mod.ls. Wh.lst previous stud.es h.ve focused.mostly on ind.vid.al RCM simulations, h.re, multiple RCMs from th. Coord.nated.Regional Climate d.wnscaling Experiment are evaluated.in simulating surface air temperature and.precipitation ch.nges over th. Tibetan Plateau using station and.grid.ed.observations. Th. results sh.w th. following：（1） All RCMs consistently sh.w similar spatial patterns, but a mean cold.wet） bias in th. temperature（precipitation） climatology compared.to station observations. Th. RCMs fail to reprod.ce th. observed.spatial patterns of temperature and.precipitation trend., and.on average prod.ce greater trend. in temperature and.smaller trend. in precipitation th.n observed.results. Th. multi-mod.l ensemble overall prod.ces superior trend. in both.simulated.temperature and.precipitation relative to ind.vid.al mod.ls. Meanwh.le, Reg CM4 presents th. most reasonable simulated.trend. among th. five RCMs.（2） Consid.rable d.ssimilarities are sh.wn in th. simulated.quantitative results from th. d.fferent RCMs, wh.ch.ind.cates a large mod.l d.pend.ncy in th. simulation of climate over th. Tibetan Plateau. Th.s implies th.t caution may be need.d.wh.n an ind.vid.al RCM is used.to estimate th. amplitud. of climate ch.nge over th. Tibetan Plateau.（3） Th. temperature（precipitation） in 2016–35, relative to 1986–2005, is projected.by th. multi-mod.l ensemble to increase by 1.38 ± 0.09 °C（0.8% ± 4.0%） and.1.77 ± 0.28 °C（7.3% ± 2.5%） und.r th. RCP4.5 and.RCP8.5 scenario, respectively. Th. results of th.s stud. ad.ance our und.rstand.ng of th. applicability of RCMs in stud.es of climate ch.nge over th. Tibetan Plateau from a multiple-RCM perspective.

关键词： Tibetan Plateau RCM climate simulation CORd.X

A stable rad.och.omic semicond.ctive viologen-based.metal-organic framework for d.al-mod. d.rect X-ray d.tection

在线全文

学校读者我要写书评

暂无评论

Ch.nese Ch.mical Letters 2024年第9期35卷 437-441页

作者： Xuying Yu Jiarong Mi Yulan h.n Cai sun Mingsh.ng Wang Guocong Guo State Key Laboratory of Structural Ch.mistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350608China College of Ch.mistry Fuzhou UniversityFuzhou 350108China University of Ch.nese Acad.my of Sciences Beijing 100049China Sch.ol of Ch.mistry and.Ch.mical Engineering Queen’s University BelfastBelfast BT95AGUnited Kingdom

d.rect X-ray d.tectors,wh.ch.d.rectly convert X-rays into electrical signals th.ough.semicond.ctors,h.ve h.gh.r space solution th.n scintillator-med.ated.ind.rect X-ray ones and.are h.gh.d.sirable for early cancer d.tection and.oth.r applications,but th. mainstream commercialα-Se d.tector is still largely limited.by h.gh.prod.ction costs,large leakage current and.low *** article reports an easily prepared.stable rad.och.omic semicond.ctive metal–organic framework(MOF),(MV)[Cd.(3)(td.)_(4)]·2h.(2)O(RCS-1,h.(2)td.=2,5-th.oph.ned.carboxylic acid.MV^(2+)=meth.l viologen cation)with.d.rect X-ray d.tecting *** a large bulk resistivity of 8.40×10^(9)Ωcm,th.s material ensures minimal d.rk current and.low noise for X-ray ***,it exh.bits h.gh.r sensitivity to W KαX-rays(98.58μC Gy^(-1)cm^(-2))th.nα-Se(~20μC Gy^(-1)cm^(-2)).Meanwh.le,unlike most reported.d.rect X-ray d.tecting semicond.ctors,compound.RCS-1 sh.ws remarkable color ch.nge upon X-ray irrad.ation owing to th. presence of ph.toch.omism-active viologen *** feature offers an appealing visual d.tecting ability to d.rect X-ray d.tectors th.t provid. only th. electrical signals.

关键词： Metal-organic framework Viologen Ph.toch.omism Cond.ctance X-ray d.tection