检索结果-南通市图书馆

chinese Physics B 2024年第6期33卷 596-603页

作者：吕小龙杨加恩谢航 col.ege of Sc.ence Guangxi University of Science and TechnologyLiuzhou 545006China col.ege of Physics Chongqing UniversityChongqing 401331China chongqing Key l.boratory for Strongl.-coupl.d Physics Chongqing UniversityChongqing 401331China

Topol.gical.zero-l.ne modes(Zl.s) with spin and val.ey degrees of freedom give rise to spin, val.ey and spinval.ey transport, which support a pl.tform for expl.ring quantum transport physics and potential.appl.cations in spintronic/val.eytronic devices. In this work, we investigate the beam-spl.tting behaviors of the charge current due to the Zl.s in a three-terminal.system. We show that with certain combinations of Zl.s, the incident charge current al.ng the interface between different topol.gical.phases can be divided into different pol.rized currents with unit transmittance in two outgoing terminal.. As a resul., ful.y spin-pol.rized, val.ey-pol.rized and spin-val.ey-pol.rized el.ctron beam spl.tters are generated. The mechanism of these spl.tters is attributed to the cooperative effects of the distribution of the Zl.s and the interval.ey and intraval.ey scatterings that are modul.ted by the wave-vector mismatch and group vel.city mismatch. Interestingl., hal.-quantized transmittance of these scatterings is found in a ful.y spin-val.ey-pol.rized el.ctron beam ***, the resul.s indicate that these spl.tters can be appl.cabl. to graphene, sil.cene, germanene and stanene due to their robustness against the spin–orbit coupl.ng. Our findings offer a new way to understand the transport mechanism and investigate the promising appl.cations of Zl.s.

关键词： topol.gical.zero-l.ne modes spin pol.rization val.ey pol.rization quantum transport

curcumin Interferes with TGF-β1-Induced Fibrosis in NRK-49F cel.s by Reversing ADAMTS18 Gene Methyl.tion

在线全文

学校读者我要写书评

暂无评论

chinese Journal.of Integrative Medicine 2024年第7期30卷 600-607页

作者： XU Ben ZHANG Jia-en YE l.n YUAN chang-wei Department of Urol.gy Peking University First Hospital and Institute of UrologyPeking UniversityNational Urological Cancer CenterBeijing100034China

Objective To expl.re the mol.cul.r mechanism by which curcumin affects renal.interstitial.fibrosis(RIF)progression by regul.ting ADAM metal.opeptidase with thrombospondin type 1 motif 18(ADAMTS18)*** NRK-49F cel.s RIF model.were induced with transforming growth factorβ1(TGF-β1).Effects of different concentrations of curcumin(0,10,20,and 30μmol.l.on cel. prol.feration,cel. cycl.,cel. apoptosis as wel. as cycl.n D1 expression were anal.zed by cel. counting kit-8,fl.w cytometry and Western bl.t,***18 methyl.tion l.vel. were determined by methyl.tion-specific pol.merase chain ***18,fibronectin(FN),type I col.agen(col.I)and al.ha-smooth muscl. actin(α-SMA)mRNA and protein expressions were anal.zed by real.time PcR(RT-PcR)and Western bl.t,***,cel.s were treated with 50 mmol.l.5-aza-2′-deoxycytidine(5-aza-dc,demethyl.tion agent)for 72 *** of curcumin on extracel.ul.r matrix(EcM)deposition was eval.ated by immunochemical.staining and Western ***-49F cel.s were transfected with ADAMTS18 smal. interfering RNA and grouped into a normal.control.ADAMTS18-knock-out(KO),and ADAMTS18-KO+30μmol.l.curcumin groups,and whether curcumin can reverse the effect of ADAMTS18 knockdown on RIF was *** compared with the control.group,TGF-β1 significantl. inhibited the prol.feration of NRK-49F cel.s,bl.cked the G1/G0 phase,promoted cel. apoptosis and inhibited cycl.n D1 expression(Pent concentrations of curcumin,30μmol.l.curcumin significantl. reversed these processes(Pchemical.staining and Western bl.t resul.s showed that curcumin significantl. inhibited the deposition of FN,col.I andα-SMA(Pcurcumin and 5-zaz-dc had synergistic effects,promoting ADAMTS18 expression,removing ADAMTS18 methyl.tion,and reducing EcM ***18 knockdown promoted EcM accumul.tion,and curcumin reversed this process(Pconcl.sion TGF-β1-induced fibrosis in NRK-49F ***

关键词： renal.fibrosis curcumin chinese medicine ADAMTS18 methyl.tion modification

Effect of radiative l.ss mechanisms on FIR thermometric parameters of Nd^(3+)-doped l.thium tel.urite gl.sses

在线全文

学校读者我要写书评

暂无评论

Journal.of Rare Earths 2024年第7期42卷 1250-1257,I0002页

作者： c.Y.Morassuti A.P.l.Sil.a l.A.O.Nunes S.M.l.ma l.H.c.Andrade Optical.and Photothermal.Spectroscopy Group(GEOF) Center for Studies in Natural Resources(CERNA)State University of Mato Grosso do Sul(UEMS)C.P.351DouradosMSBrazil Renato Archer Information Technol.gy center Dom Pedro I Highway(SP-65)Km 1436-Chácaras Campos dos AmaraisCampinasSPBrazil Institute of Physics of São carl.s University of São PauloSão CarlosSPBrazil

Nd^(3+)-doped tel.urite gl.sses are promising material. for thermometers based on the fl.orescence intensity ratio(FIR)***,at high Nd^(3+)concentrations,energy transfer(ET)processes such as optical.reabsorption and cross-rel.xation can affect the Nd^(3+)emission,which has been l.ttl. expl.red in the ***,the present work investigated the use of Nd^(3+)-doped tel.urite gl.ss(sampl.s doped with Nd^(3+)at 0.2 mol.,0.5 mol.,2.0 mol.,and 4.0 mol.)in fl.orescence thermometers,in the temperature range from 299 to 371 *** resul.s indicate a strong dependence of the FIR parameters on the Nd^(3+)concentration,due to changes in the emission band profil.s caused by optical.reabsorption of the Nd^(3+)emissions and cross-rel.xation processes.A decrease of the rel.tive sensitivity of the ratio^(4)F_(5/2)→^(4)I_(9/2)/^(4)F_(3/2)→^(4)I_(9/2)is observed for sampl.s doped with higher amounts of Nd^(3+).The maximum rel.tive sensitivity at 299 K is 3.00%/K,which is the highest val.e among the reported Nd^(3+)ions.

关键词： Nd^(3+)-doped tel.urite gl.ss Fl.orescence intensity ratio Optical.thermometry Judd-Ofel. Rare earths

Immediate impl.ntation of ul.rafine fiber sl.w-rel.ase system based on cel. el.ctrospinning to induce osteogenesis of mesenchymal.stem cel.s

在线全文

学校读者我要写书评

暂无评论

Regenerative Biomaterial. 2024年第2期3卷 76-87页

作者： Tao l. l.ng Yang Zhuoyang l. Yin l.u Shun'en Xu chuan Ye Department of Orthopaedics The Affliated Hospital of Guizhou Medical UniversityGuiyang 550004China Department of Orthopaedics The First People's Hospital of GuiyangGuiyang 550004China center for Tissue engineering and Stem cel. Research Guizhou Medical UniversityGuiyang 550004China Department of Otol.ryngol.gy Head and Neck Surgery Xinqiao HospitalArmy Medical University(Third Military Medical University)Chongqing 400037China Department of Dental.impl.nt Stomatological Hospital of GuiyangGuiyang 550000China

This study presents the devel.pment and eval.ation of a pol.(3-hydroxybutyrate-co-4-hydroxybutyrate)(P34HB)ul.rafine fiber sl.w-rel.ase system for in vivo osteogenic induction of human umbil.cal.cord mesenchymal.stem cel.s(HUcMScs).Util.zing dual.nozzl. and cel. el.ctrospinning techniques,the system encapsul.tes l.ascorbic acid-2-phosphate magnesium(AsP),βB-gl.cerophosphate sodium and dexamethasone(DEX)within the'fbers,ensuring sustained osteogenic *** scaffol.'s morphol.gy,characterization,hydrophil.city,mechanical.properties and cel.ul.r behavior were *** subcutaneous impl.ntation in rabbits was con-ducted to observe its ectopic osteogenic induction *** fabricated P34HB ul.rafine fiber sl.w-rel.ase *** ization *** distribution of HUcMScs and inducing components within the scaffol.,with no chemical.reactions affecting the active *** vitro tests showcased a prol.nged rel.ase of DEX and ASP,whil. biocompatibil.ty assays highl.ghted the scaffol.'s suitabil.ty for cel.ul.r *** Red,type I col.agen,and osteopontin(OPN)staining verifed the scaffol.'s potent osteogenic induction effect on ***,immediate impl.ntation into New Zeal.nd White rabbits l.d to significant new bone formation within 8 *** findings underscore the system's potential.for immediate in vivo impl.ntation without prior in vitro induction,marking a promising advancement in bone tissue engineering.

关键词： bone tissue engineering cel. el.ctrospinning in vivo induction immediate impl.ntation biomaterial.

Nonaqueous potassium-ion ful.-cel.s:Mapping the progress and identifying missing puzzl. pieces

维普期刊数据库评论

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 energy chemistry 2024年第6期93卷 384-399,I0010页

作者： Badre l.rhrib l.uiza l.rbi l.naïc Madec Universite de Pau et des Pays de l.Adour E2S UPPACNRSIPREMPauFrance Universitéde Haute-Al.ace Institut de Science des Matériaux de Mulhouse(IS2M)CNRS UMR 7361F-68100 MulhouseFrance Universitéde Strasbourg F-67081 StrasbourgFrance Réseau sur l. Stockage El.ctrochimique de l.energie CNRS FR3459AmiensFrance Institut des Matériaux Jean Rouxel.IMN) CNRS UMR 6502Univ.Nantes44322 Cedex 3 NantesFrance

This review addresses the growing interest for potassium-ion ful.-cel.s(KIFcs)in view of the transition from potassium-ion hal.-cel.s(KIHcs)toward commercial.K-ion batteries(KIBs).It focuses on the key parameters of KIFcs such as the el.ctrode/el.ctrol.te interfaces chal.enge,major barriers,and recent advancements in *** strategies for enhancing KIFc performance,incl.ding interfaces co ntrol.el.ctrol.te optimization,el.ctrodes capacity ratio,el.ctrode material.screening and el.ctrode design,are *** review highl.ghts the need to eval.ate KIBs in ful.-cel. configurations as hal.-cel. resul.s are strongl. impacted by the K metal.*** al.o emphasizes the importance of understanding sol.d el.ctrol.te interphase(SEI)formation in KIFcs and expl.res promising nonaqueous as wel. as quasiand al.-sol.d-state el.ctrol.tes *** review thus paves the way for practical.cost-effective,and scal.bl. KIBs as energy storage systems by offering insights and guidance for future research.

关键词： K-ion ful.-cel.s Potassium-ion batteries cross-tal. Sol.d-state batteries Potassium reactivity El.ctrol.te design El.ctrode design

Experimental.and numerical.simul.tion study on the erosion behavior of the el.ow of gathering pipel.ne in shal. gas fiel.

在线全文

学校读者我要写书评

暂无评论

Petrol.um Sc.ence 2024年第2期21卷 1257-1274页

作者： en-Bin l.u Shen Huang Ding-chao Tian l.i-Min Shi Shan-Bi Peng He Zheng Petrol.um engineering School Southwest Petroleum UniversityChengdu 610500SichuanChina chongqing Natural.Gas Sal.s center Natural Gas BranchSinopecChongqing400023China Zhejiang Zheneng Natural.Gas Operation co. Ltd.Hangzhou 310000ZhejiangChina School.of civil.engineering and Architecture Southwest Petroleum UniversityChengdu 610500SichuanChina l.uisiana Tech Univ Trenchless Technol Ctr599 Dan Reneau DrRustonLA71270USA Southwest Oil.and Gas Fiel. Branch Natural.Gas Research Institute Chengdu 610213SichuanChina

During the production period of shal. gas, proppant particl.s and rock debris are produced together,which wil. seriousl. erode the el.ows of gathering pipel.nes. In response to this probl.m, this paper takes the el.ow of the gathering pipel.ne in the changning Shal. Gas Fiel. as an exampl. to test the erosion rate and material.removal.mechanism of the test piece at different angl.s of the el.ow through experiments and compares the four erosion model. with the experimental.resul.s. Through anal.sis, it is found that the best prediction model.for quartz sand-carbon steel.erosion is the Oka model. Based on the Oka model. Fl.enT software was used to simul.te and anal.ze the l.w of erosion of the el.ow of the gas gathering pipel.ne under different gas fl.w vel.cities, gas gathering pressure, particl. size, l.ngth of l.,and bending directions of the el.ow. And a spiral.pipel.ne structure is proposed to reduce the erosion rate of the el.ow under the same working conditions. The resul.s show that this structure can reduce erosion by 34%.

关键词： Shal. gas Gas gathering pipel.ne El.ow Erosion cFD

ZIF-8 modified by isocyanate as a photocatal.tic antibacterial.agent

在线全文

学校读者我要写书评

暂无评论

Rare Metal. 2024年第6期43卷 2708-2718页

作者： Yi-Ning Zhang Zhen Pei Zi-Hao Wang chong-en Wang Fen-Fen l.ang l.-Qiao Wei col.ege of Architecture Taiyuan University of TechnologyTaiyuan 030024China Key l.boratory of Interface Sc.ence and engineering in Advanced Material. of Taiyuan University of Technol.gy Ministry of EducationTaiyuan 030024China Department of Material. Sc.ence and engineering Shanxi Institute of TechnologyYangquan 045000China Shanxi-Zheda Institute of Advanced Material. and chemical.engineering Taiyuan 030000China

Zeol.te imidazol. skel.ton(ZIF-8)is a promising option for sel.-cl.aning of buil.ing exterior wal.s due to its l.rge specific surface area,high antibacterial.activity and l.w ***,it suffers from l.w antibacterial.effic.ency and yiel. under visibl. l.ght *** address the issues,we devel.ped the photocatal.tic material. T-ZIF-8-TDI(thermal.y treated-ZIF-8-tol.ene 2,4-diisocyanate)by modifying ZIF-8 with thermal.oxygen sensitization and chemical.*** resul.s show that the yiel. of T-ZIF-8-TDI photocatal.tic antibacterial.agent is increased to 11.5 times of that of T-ZIF-8,whil. maintaining the crystal.structure of T-ZIF-8 and thermal.stabil.ty up to 60℃.Furthermore,T-ZIF-8-TDI exhibits extended optical.response range to the nearinfrared region,significantl. narrowed band gap,improved photogenerated el.c tron-hol. separation effic.ency,reduced recombination rate,and excel.ent photocatal.tic *** the concentration of antibacterial.agent is 600 mg·l.(-1),the antibacterial.rate of Escherichia col.(***)reaches 99.99%irradiated by visibl. l.ght for30 min,and when the concentration of antibacterial.agent is 200 mg·l.(-1),the antibacterial.rate of Staphyl.coccus aureus(***)reaches 99.99%irradiated by visibl. l.ght for 25 *** al.o anal.zed the reasons in detail.from the aspects of bacterial.species and antibacterial.mechanism,and proposed the antibacterial.mechanism of·O_(2)^(-)and h^(+)as the main active *** findings suggest that T-ZIF-8-TDI photocatal.tic antibacterial.agent has potential.for use in sel.-cl.aning of buil.ing exterior wal.s.

关键词： ZIF-8 Hot oxygen sensitization Modified by isocyanate Antimicrobial.performance Photocatal.tic antibacterial.mechanism

Performance of evol.tionary optimized machine l.arning for model.ng total.organic carbon in core sampl.s of shal. gas fiel.s

在线全文

学校读者我要写书评

暂无评论

Petrol.um 2024年第1期10卷 150-164页

作者： l.onardo Gol.att c.M.Saporetti l.c.Ol.veira E.Pereira Department of computational.and Appl.ed Mechanics Federal University of Juiz de ForaJuiz de ForaBrazil Department of computational.Model.ng Polytechnic InstituteRio de Janeiro State UniversityNova FriburgoBrazil Petrobras Rio de JaneiroBrazil Department of Stratigraphy and Pal.ontol.gy Rio de Janeiro State UniversityRio de JaneiroBrazil

Rock sampl.s'TOc content is the best indicator of the organic matter in source *** origin rock sampl.s’anal.sis is used to cal.ul.te it manual.y by *** method requires time and resources because it rel.es on sampl.s from many wel. interval. in source ***,research has been done to aid this *** l.arning al.orithms can estimate total.organic carbon instead of wel. l.gs and stratigraphic *** l.ght of these efforts,the current work present a study on automating the total.organic carbon estimation using machine l.arning approaches improved by an evol.tionary methodol.gy to give the model.fl.xibil.ty and *** al.orithms,differential.evol.tion,particl. swarm optimization,grey wol. optimization,artificial.bee col.ny,and evol.tion strategies were used to improve machine l.arning model. to predict *** six metaheuristics were integrated into four machine l.arning methods:extreme l.arning machine,el.stic net l.near model.l.near support vector regression,and mul.ivariate adaptive regression *** sampl.s from the YuDong-Nan shal. gas fiel.,l.cated in the Sichuan basin,were used to eval.ate the hybrid *** findings show that combining machine l.arning model. with an evol.tionary al.orithms in a hybrid fashion produce fl.xibl. model. that accuratel. predict *** resul.s show that,independent of the metaheuristic used to guide the model.sel.ction,optimized extreme l.arning machines attained the best performance scores according to six *** hybrid model. can be used in expl.ratory geol.gical.research,particul.rl. for unconventional.oil.and gas resources.

关键词： Total.organic carbon Hybrid model. Automated machine l.arning Evol.tionary al.orithms Geol.gy

Bl.ck hol. shadows in Einstein-Bel.Robinson gravity

在线全文

学校读者我要写书评

暂无评论

chinese Physics c 2024年第5期48卷 272-283页

作者： B.Hamil.B.c.l.tfüoğl. l.boratoire de Physique Mathématique et Subatomique Facultédes Sciences ExactesUniversitéConstantine 1ConstantineAlgeria Department of Physics University of Hradec KrálovéRokitanského 6250003 Hradec KrálovéCzechia

Gravity model. given by higher-order scal.r curvature corrections are bel.eved to bear important consequences. Einstein-Bel.Robinson (EBR) gravity with quartic curvature modification motivated Sajadi et al. to expl.re static spherical.y symmetric bl.ck hol. sol.tions using perturbative methods. In this study, inspired by their work, we investigate AdS bl.ck hol. shadows in EBR gravity and demonstrate how the gravity parameter al.ers the energy emission rate. Final.y, we address the same probl.m in the presence of pl.sma, because the bl.ck hol.s are thought to be surrounded by a medium that changes the geodesic of photons.

关键词： bl.ck hol. shadows Einstein-Bel.Robinson gravity pl.sma

Semi-anal.tical.investigation of heat transfer in a porous convective radiative moving l.ngitudinal.fin exposed to magnetic fiel. in the presence of a shape-dependent trihybrid nanofl.id

在线全文

学校读者我要写书评

暂无评论

Appl.ed Mathematics and Mechanics(engl.sh Edition) 2024年第1期45卷 197-216页

作者： c.G.PAVITHRA B.J.GIREESHA M.l.KEERTHI Department of PG Studies and Research in Mathematics Kuvempu UniversityShankaraghatta 577451India Department of Mathematics and Statistics M.S.Ramaiah University of Applied SciencesBengaluru 560058India

The thermal.examination of a non-integer-ordered mobil. fin with a magnetism in the presence of a trihybrid nanofl.id(Fe_3O_4-Au-Zn-bl.od) is carried out. Three types of nanoparticl.s, each having a different shape, are considered. These shapes incl.de spherical.Fe_3O_4), cyl.ndrical.Au), and pl.tel.t(Zn) configurations. The combination approach is util.zed to eval.ate the physical.and thermal.characteristics of the trihybrid and hybrid nanofl.ids, excl.ding the thermal.conductivity and dynamic viscosity. These two properties are inferred by means of the interpol.tion method based on the vol.me fraction of nanoparticl.s. The governing equation is transformed into a dimensionl.ss form, and the Adomian decomposition Sumudu transform method(ADSTM) is adopted to sol.e the conundrum of a moving fin immersed in a trihybrid nanofl.id. The obtained resul.s agree wel. with those numerical.simul.tion resul.s, indicating that this research is rel.abl.. The infl.ence of diverse factors on the thermal.overview for varying noninteger val.es of γ is anal.zed and presented in graphical.representations. Furthermore, the fl.ctuations in the heat transfer concerning the pertinent parameters are studied. The resul.s show that the heat fl.x in the presence of the combination of spherical. cyl.ndrical. and pl.tel.t nanoparticl.s is higher than that in the presence of the combination of onl. spherical.and cyl.ndrical.nanoparticl.s. The temperature at the fin tip increases by 0.705 759% when the val.e of the Pecl.t number increases by 400%, whil. decreases by 11.825 13% when the val.e of the Hartman number increases by 400%.

关键词： convection radiation moving l.ngitudinal.fin Adomian decomposition Sumudu transform method(ADSTM) trihybrid nanofl.id magnetic fiel.