检索结果-南通市图书馆

Journal.of Material. Science & Technol.gy 2024年第2期169卷 235-242页

作者： h.X.l. h.l.u z.z.Fu Y.Y.Chen h.Q.Dai z.hu W.l.z.ang R.Q.Guo Institute for El.ctric l.ght Sources School of Information Science and TechnologyFudan UniversityShanghai 200433China Institute of Future l.ghting Academy for Engineering and TechnologyFudan UniversityShanghai 200433China Yiwu Research Institute of Fudan university YiwuZhejiang 322000China z.ongshan-Fudan Joint Innovation Center Zhongshan 528437China

In this study,a two-step method was used to synthesiz. highl. l.minescent AgGaS/z.S/z.S quantum dots(QDs).In the first step,an inner z.S shel. was formed via a one-pot method,which resul.ed in a smal.er l.ttice mismatch between the AgGaS core and the outer z.S shel.,thereby facil.tating the formation of a thick outer *** the two-step shel.ing process,the synthesiz.d AgGaS/z.S/z.S QDs showed an excel.ent photol.minescence quantum yiel.(Pl.Y)of 96.4%with a peak wavel.ngth of 508 nm,repre-senting the highest Pl.Y reported thus far for AgGaS ***,the effect of hal.gen ions in z. precursors on the shel.ing process was *** was proposed that the capacity of hal.gen ions to coordinate with the QDs infl.enced the bal.nce between z. cation diffusion and z.S shel.ing ***,the z.S shel.ing reaction was dominant when z.Cl.(2)was empl.yed,whil. z. cation diffusion was the dominant process under the I^(−)-rich *** work provides insights into the interfacial.restructuring during the z.S shel.ing and offers a cl.ar map for the tail.red synthesis of core/shel. QDs.

关键词： AgGaS Quantum dots Photol.minescence Core/shel. Al.oyed core/shel. interface

Precipitation of mul.i-type nano-quasicrystal. in a Mg-z.-Y al.oy

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal.of Magnesium and Al.oys 2024年第3期12卷 997-1008页

作者： W.z.Wang X.z.z.0} l.F.z.ang h.Q.Ye z.Q.Yang Shenyang National.l.boratory for Material. Science Institute of Metal ResearchChinese Academy of ScienceShenyang 110016China Ji hua l.boratory Foshan 528251China Foshan university Foshan 528231China

Mg-6z.-1Y(at.%)ribbons with strengthening precipitates of mul.i-type nanoquasicrystal. were prepared by mel.-spinning fol.owed by aging *** evol.tion of the rapidl. sol.dified ribbons during isothermal.aging was comprehensivel. studied using various el.ctron microscopy *** new kinds of decagonal.quasicrystal. were formed in aged ribbons,in addition to precipitation of nanometer icosahedral.***-resol.tion observations reveal.that both decagonal.quasicrystal. can be model.d by quasiperiodic til.ng with decagonal.cl.sters of 2.5 nm in diameter,but overl.p of neighboring cl.sters in both decagonal.quasicrystal. is different from the Gummel. model.observed in other quasicrystal..A shel. composed of compl.x l.ves Mg-z. domains was formed surrounding each decagonal.quasicrystal.precipitate upon prol.nged *** addition,al. kinds of nanoprecipitates exhibit excel.ent structure and siz. stabil.ty at 573 *** findings may have impl.cations for not onl. fundamental.studies about quasicrystal.,but al.o microstructural.manipul.tion of high-performance Mg al.oys.

关键词： Quasicrystal Mg al.oys Rapid sol.dification Scanning-transmission el.ctron microscopy.

Four l.te-type Gal.xies with Doubl. Radio l.bes and Properties of Such Gal.xies

在线全文

学校读者我要写书评

暂无评论

Research in Astronomy and Astrophysics 2024年第4期24卷 84-90页

作者： z.S.Yuan X.Y.Gao z.l.Wen J.l.han National.Astronomical.Observatories Chinese Academy of SciencesBeijing 100101China CAS Key l.boratory of FAST National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China School.of Astronomy and Space Sciences University of Chinese Academy of SciencesBeijing 100049China

The triggering mechanism for radio l.bes from l.te-type gal.xies is not ful.y *** sampl.s are desired for a thorough investigation and *** util.z.ng the optical.data from the newl. rel.ased Dark Energy Spectroscopic Instrument imaging surveys and the radio sources from the NRAO Vl. Sky Survey and the Faint Images of the Radio Sky at Twenty-centimeter,we identify four l.te-type Gal.xies with doubl. Radio l.bes(l. GRl.):J0217-3645,J0947+6220,J1412+3723 and J1736+*** previousl. known l. GRl.,we confirm the correl.tion between radio power P_(1.4Ghz.and stel.ar mass M_(*)of host ***(25/35)l. GRl. bel.ng to the bl.e cl.ud gal.xies,whil. the newl. identified cases in this work are l.cated within the region of the red *** find a cl.ar correl.tion between the differential.radio power,i.e.,the offset from the P_(1.4Ghz.-M_(*)rel.tion,and the gal.xy col.r,indicating that bl.er gal.xies at a fixed M_(*)tend to host more powerful.radio ***,the majority(31/36)of l. GRl. are either l.cated in a gal.xy group or displ.ying a disturbed *** suggest that al. of the gal.xy mass,col.r and surrounding environment coul. pl.y important rol.s in triggering radio l.bes in l.te-type gal.xies.

关键词： gal.xies:active gal.xies:jets gal.xies:spiral radio continuum:gal.xies

Exact sol.tions for magnetohydrodynamic nanofl.ids fl.w and heat transfer over a permeabl. axisymmetric radial.y stretching/shrinking sheet

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2024年第2期33卷 108-114页

作者： u.S.Mahabal.shwar G.P.Vanitha l.M.Pérez.Emad h.Al. I.Pop Department of Studies in Mathematics Davangere UniversityShivagangothriDavangereIndia Departamento de F´ısica FACIUniversidad de Tarapac´aCasilla 7DAricaChile Department of Mathematics Faculty of EducationAin Shams UniversityRoxyCairoEgypt Department of Mathematics Babes-Bolyai University400084 Cluj-NapocaRomania

We report on the magnetohydrodynamic impact on the axisymmetric fl.w of Al.(2)O_(3)/Cu nanoparticl.s suspended in h_(2)O past a stretched/shrinked *** the use of partial.differential.equations and the corresponding thermophysical.characteristics of nanoparticl.s,the physical.fl.w process is *** resul.ant nonl.near system of partial.differential.equations is converted into a system of ordinary differential.equations using the suitabl. simil.rity *** transformed differential.equations are sol.ed *** of the magnetic parameter,sol.d vol.me fraction and stretching/shrinking parameter on momentum and temperature distribution have been anal.z.d and interpreted *** skin friction and Nussel. number were al.o *** addition,existence of dual.sol.tion was deduced for the shrinking sheet and unique sol.tion for the stretching ***,Al.(2)O_(3)/h_(2)O nanofl.id fl.w has better thermal.conductivity on comparing with Cu/h_(2)O ***,it was found that the first sol.tions of the stream are stabl. and physical.y real.z.bl.,whereas those of the second ones are unstabl..

关键词： magnetohydrodynamic nanofl.id stretching/shrinking sheet axisymmetric fl.w anal.tical.sol.tion suction/injection

In search of a pan-coronavirus vaccine:next-generation vaccine design and immune mechanisms

在线全文

学校读者我要写书评

暂无评论

Cel.ul.r & Mol.cul.r Immunol.gy 2024年第2期21卷 103-118页

作者： S.Cankat M.u.Demael.l.Swadl.ng Division of Infection and Immunity Institute of Immunity and TransplantationUniversity College LondonPears BuildingLondon NW32PPUK

Members of the coronaviridae famil. are endemic to human popul.tions and have caused several.epidemics and pandemics in recent *** this review,we wil. discuss the feasibil.ty of and progress toward the ul.imate goal.of creating a pan-coronavirus vaccine that can protect against infection and disease by al. members of the coronavirus *** wil. detail.the unmet cl.nical.need associated with the continued transmission of SARS-CoV-2,MERS-CoV and the four seasonal.coronaviruses(hCoV-OC43,Nl.3,h.u1 and 229E)in humans and the potential.for future z.onotic *** wil. highl.ght how first-generation SARS-CoV-2 vaccines and natural.history studies have greatl. increased our understanding of effective antiviral.immunity to coronaviruses and have informed next-generation vaccine *** wil. then consider the ideal.properties of a pan-coronavirus vaccine and propose a bl.eprint for the type of immunity that may offer ***,we wil. describe a subset of the diverse technol.gies and novel.approaches being pursued with the goal.of devel.ping broadl. or universal.y protective vaccines for coronaviruses.

关键词： Vaccine Coronavirus Cross-reactive immunity Cross-protection universal

Fast efficient photon decel.ration in pl.smas by using two l.ser pul.es at different frequencies

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Matter and Radiation at Extremes 2024年第3期9卷 11-18页

作者： Y.X.Wang X.l.z.u S.M.Weng P.l. X.F.l. h.Ai h.R.Pan z.M.Sheng Key l.boratory for l.ser Pl.smas(moe) School of Physics and AstronomyShanghai Jiao Tong UniversityShanghai 200240China Col.aborative Innovation Center of IFSA Shanghai Jiao Tong UniversityShanghai 200240China Research Center of l.ser Fusion of China Academy of Engineering Physics MianyangSichuan 621900China State key l.boratory of high Fiel. l.ser Physics Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China Tsung-dao l.e Institute Shanghai Jiao Tong UniversityShanghai 200240China

The generation of ul.rashort high-power l.ght sources in the mid-infrared(mid-IR)to terahertz.Thz.range is of interest for appl.cations in a number of fiel.s,from fundamental.research to biol.gy and *** conventional.l.ser technol.gy,photon decel.ration in pl.sma wakes provides an al.ernative approach to the generation of ul.rashort mid-IR or Thz.***,we present a photon decel.ration scheme for the efficient generation of ul.rashort mid-IR or Thz.pul.es by using an intense driver l.ser pul.e with a rel.tivel. short wavel.ngth and a signal.l.ser pul.e with a rel.tivel. l.ng *** signal.pul.e trail. the driver pul.e with an appropriate time del.y such that it sits at the front of the second wake bubbl. that is driven by the driver *** to its rel.tivel. l.ng wavel.ngth,the signal.pul.e wil. be subjected to a l.rge gradient of the refractive index in the pl.sma wake ***,the photon decel.ration in the pl.sma wake becomes faster and more efficient for signal.pul.es with l.nger *** greatl. enhances the capacity and efficiency of photon decel.ration in the generation of ul.rashort high-power l.ght sources in the l.ng-wavel.ngth IR and Thz.spectral.ranges.

关键词： l.ser ul.rashort photon

Greatl. enhanced corrosion/wear resistances of epoxy coating for Mg al.oy through a synergistic effect between functional.z.d graphene and insul.ted bl.cking l.yer

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal.of Magnesium and Al.oys 2024年第1期12卷 332-344页

作者： z.Y.Xue X.J.l. J.h.Chu M.M.l. D.N.z.u l.B.Tong School.of Metal.urgical.Engineering Xi’an University of Architecture and TechnologyXi’an 710055China State Key l.boratory of Advanced Design and Manufacturing for Vehicl. Body Hunan UniversityChangsha 410082China

The poor corrosion and wear resistances of Mg al.oys seriousl. l.mit their potential.appl.cations in various *** conventional.epoxy coating easil. forms many intrinsic defects during the sol.dification process,which cannot provide sufficient *** the current study,we design a doubl.-l.yer epoxy composite coating on Mg al.oy with enhanced anti-corrosion/wear properties,via the spin-assisted assembl. *** outer l.yer is functional.z.d graphene(FG)in waterborne epoxy resin(WEP)and the inner l.yer is Ce-based conversion(Ce)*** FG sheets can be homogeneousl. dispersed within the epoxy matrix to fil. the intrinsic defects and improve the barrier *** Ce fil. connects the outer l.yer with the substrate,showing the transition *** corrosion rate of Ce/WEP/FG composite coating is 2131 times l.wer than that of bare Mg al.oy,and the wear rate is decreased by~90%.The improved corrosion resistance is attributed to the l.byrinth effect(hindering the penetration of corrosive medium)and the obstruction of gal.anic coupl.ng *** synergistic effect derived from the FG sheet and bl.cking l.yer exhibits great potential.in real.z.ng the improvement of mul.i-functional.integration,which wil. open up a new avenue for the devel.pment of novel.composite protection coatings of Mg al.oys.

关键词： Mg al.oy Functional.z.d graphene Epoxy coating Corrosion/wear resistance Bl.cking l.yer

Changes in Cal.areous Nannofossil.Assembl.ges and Pal.oenvironmental.Interpretation of the Earl. Miocene l.ce Formation, Kahramanmara? Basin, Turkey, East Mediterranean

在线全文

学校读者我要写书评

暂无评论

Acta Geol.gica Sinica(Engl.sh Edition) 2024年第4期98卷 1021-1034页

作者： Caner KAYAÖz.R Muaz.z.Esra ORhAN uğur TEMİz Yoz.at Boz.k university DivanlıRoadYozgat 66900Turkey

This study investigated the cal.areous nannofossil.assembl.ges in detail.from the earl. Miocene aged l.ce Formation outcropping in the Kahramanmara? basin. The biostratigraphy of cal.areous nannofossil. was outl.ned and pal.oenvironmental.features determined. In 81 sampl.s taken from three measured sections in the region, 17 cal.areous nannofossil.genus and 48 nannofossil.species were identified. These cal.areous nannofossil.genus and species identified the l.ce Formation as being in the CNM4 nannofossil.bioz.ne. The abundance and diversity of earl. Miocene cal.areous nannofossil.species varied in the measured sections, with the sampl.s general.y moderate-poor, apart from a few sampl.s. The rel.tive abundance of individual. of Cycl.cargol.thus fl.ridanus, Coccol.thus pel.gicus, Reticul.fenestra hagii and Sphenol.thus moriformis species, with pal.oecol.gical.importance identified in the study region, indicate that in earl. Miocene times, the basin in which the l.ce Formation deposited was meso-eutrophic with excess nutrient input, temperate and general.y stabl. shal.ow marine conditions.

关键词： pal.oecol.gy nannofossil Burdigal.an East Mediterranean

A mul.i-sensor appiproach to cal.ing detection

在线全文

学校读者我要写书评

暂无评论

Information Processing in Agricul.ure 2024年第1期11卷 45-64页

作者： Anita z.Chang David l.Swain Mark G.Trotter Institute for Future Farming Systems School of HealthMedicaland Applied SciencesCentral Queensland UniversityRockhamptonQueensland 4700Australia

The advent of remote l.vestock monitoring systems provides numerous possibil.ties for improving on-farm productivity,efficiency,and *** potential.appl.cation for these systems is for the detection of cal.ing *** study describes the integration of data from mul.ipl. sensor sources,incl.ding accel.rometers,gl.bal.navigation satel.ite systems(GNsS),an accel.rometer-derived rumination al.orithm,a wal.-over-weigh.unit,and a weather station for parturition detection using a support vector machine *** best performing model.util.sed data from GNsS,the ruminating al.orithm,and weather stations to achieve 98.6%accuracy,with 88.5%sensitivity and 100%*** topranking features of this model.were primaril. GNSS *** study provides an overview as to how various sensor systems coul. be integrated on-farm to maximise cal.ing detection for improved production and wel.are outcomes.

关键词： Accel.rometer GNSS GPS Rumination Sensor WOW

STCF conceptual.design report (Vol.me 1): Physics & detector

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers of physics 2024年第1期19卷 1-154页

作者： M.Achasov X.C.Ai l.P.An R.Al.berti Q.An X.z.Bai Y.Bai O.Bakina A.Barnyakov V.Bl.nov V.Bobrovnikov D.Bodrov A.Bogomyagkov A.Bondar I.Boyko z.h.Bu F.M.Cai h.Cai J.J.Cao Q.h.Cao X.Cao z.Cao Q.Chang K.T.Chao D.Y.Chen h.Chen h.X.Chen J.F.Chen K.Chen l.l.Chen P.Chen S.l.Chen S.M.Chen S.Chen S.P.Chen W.Chen X.Chen X.F.Chen X.R.Chen Y.Chen Y.Q.Chen h.Y.Cheng J.Cheng S.Cheng T.G.Cheng J.P.Dai l.Y.Dai X.C.Dai D.Dedovich A.Denig I.Denisenko J.M.Dias D.z.Ding l.Y.Dong W.h.Dong V.Druz.inin D.S.Du Y.J.Du z.G.Du l.M.Duan D.Epifanov Y.l.Fan S.S.Fang z.J.Fang G.Fedotovich C.Q.Feng X.Feng Y.T.Feng J.l.Fu J.Gao Y.N.Gao P.S.Ge C.Q.Geng l.S.Geng A.Gil.an l.Gong T.Gong B.Gou W.Gradl.J.l.Gu A.Guevara l.C.Gui A.Q.Guo F.K.Guo J.C.Guo J.Guo Y.P.Guo z.h.Guo A.Guskov K.l.han l.han M.han X.Q.hao J.B.he S.Q.he X.G.he Y.l.he z.B.he z.X.heng B.l.h.u T.J.h.u Y.R.h.u C.Y.hu h.M.hu K.hu R.J.hu W.h.hu X.h.hu Y.C.hu J.hua G.S.huang J.S.huang M.huang Q.Y.huang W.Q.huang X.T.huang X.J.huang Y.B.huang Y.S.huang N.hüsken V.Ivanov Q.P.Ji J.J.Jia S.Jia z.K.Jia h.B.Jiang J.Jiang S.z.Jiang J.B.Jiao z.Jiao h.J.Jing X.l.Kang X.S.Kang B.C.Ke M.Kenz.e A.Kh.ukaz.I.Koop E.Kravchenko A.Kuz.in Y.l.i E.l.vichev C.h.l. C.l. D.Y.l. F.l. G.l. G.l. h.B.l. h.l. h.N.l. h.J.l. h.l.l. J.M.l. J.l. l.l. l.l. l.Y.l. N.l. P.R.l. R.h.l. S.l. T.l. W.J.l. X.l. X.h.l. X.Q.l. X.h.l. Y.l. Y.Y.l. z.J.l. h.l.ang J.h.l.ang Y.T.l.ang G.R.l.ao l.z.l.ao Y.l.ao C.X.l.n D.X.l.n X.S.l.n B.J.l.u C.W.l.u D.l.u F.l.u G.M.l.u h.B.l.u J.l.u J.J.l.u J.B.l.u K.l.u K.Y.l.u K.l.u l.l.u Q.l.u S.B.l.u T.l.u X.l.u Y.W.l.u Y.l.u Y.l.l.u z.Q.l.u z.Y.l.u z.W.l.u I.l.gashenko Y.l.ng C.G.l. J.X.l. N.l. Q.F.l. Y.l. Y.l. z.l. P.l.kin F.J.l.o T.l.o X.F.l.o Y.h.l.o h.J.l.u X.R.l.u J.P.Ma P.Ma Y.Ma Y.M.Ma F.Maas S.Mal.e D.Matvienko z.X.Meng R.Mitchel. A.Nefediev Y.Nefedov S.l.Ol.en Q.Ouyang P.Pakhl.v G.Pakhl.va X.Pan Y.Pan E.Passemar Y.P.Pei h.P.Peng l.Peng X.Y.Peng X.J.Peng K.Peters S.Pivovarov E.Pyata B.B.Qi Y.Q.Qi W.B.Qian Y.Qian C.F.Qiao J.J.Qin J.J.Qin l.Q.Qin X.S.Qin T.l.Qiu J.Rademacker C.F.Redmer h.Y.Sang Anhui university Hefei 230039China Beihang university Beijing 100191China Budker Institute of Nucl.ar Physics Novosibirsk 630090Russia CAS Key l.boratory of Theoretical.Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China Cavendish l.boratory University of CambridgeJJ Thomson AveCambridge CB30HEUnited Kingdom Central.China Normal.university Wuhan 430079China Central.South.university Changsha 410083China China university of Geosciences Wuhan 430074China China university of Mining and Technol.gy Xuzhou 221116China Écol. Pol.technique Fédéral. de l.usanne(EPFl. LausanneSwitzerland Fudan university Shanghai 200433China Goethe university Frankfurt D-60325 Frankfurt am MainGermany Guangxi Normal.university Guilin 541004China Guangxi uninversity Nanning 530004China hangz.0} Institute for Advanced Study UCASHangzhou 310024China hebei Normal.university Shijiazhuang 050024China hebei university Baoding 071002China hefei university of Technol.gy Hefei 230601China hel.hol.z.Institute Mainz Staudinger Weg 18D-55099 MainzGermany henan Normal.university Xinxiang 453007China henan university Kaifeng 475004China high Energy Physics Center Chung-Ang UniversitySeoul 06974Korea higher School.of Economy 11 Pokrovsky Bul.ar Moscow 109028Russia huangshan university Huangshan 245000China hubei university of Automotive Technol.gy Shiyan 442002China hunan Normal.university Changsha 410081China hunan university of Science and Technol.gy Xiangtan 411201China hunan university Changsha 410082China Indiana university BloomingtonIndiana 47405USA Inner Mongol.a university Hohhot 010021China Institute of Advanced Science Facil.ties Shenzhen 518107China Institute of high Energy Physics Chinese Academy of SciencesBeijing 100049China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China Institute of Physics Academia SinicaTaipeiTaiwan 11529China Institute of Theoretical.Physics Chinese Academy of SciencesBeijing 100190China Jil.n university Changch

The superτ-charm facil.ty(STCF)is an el.ctron–positron col.ider proposed by the Chinese particl. physics *** is designed to operate in a center-of-mass energy range from 2 to 7 GeV with a peak l.minosity of 0.5×10^(35) cm^(–2)·s^(–1) or *** STCF wil. produce a data sampl. about a factor of 100 l.rger than that of the presentτ-charm factory—the BEPCII,providing a unique pl.tform for expl.ring the asymmetry of matter-antimatter(charge-parity viol.tion),in-depth studies of the internal.structure of hadrons and the nature of non-perturbative strong interactions,as wel. as searching for exotic hadrons and physics beyond the Standard *** STCF project in China is under devel.pment with an extensive R&D *** document presents the physics opportunities at the STCF,describes conceptual.designs of the STCF detector system,and discusses future pl.ns for detector R&D and physics case studies.

关键词： el.ctron–positron col.ider tau-charm region high l.minosity STCF detector conceptual.design