检索结果-南通市图书馆

Efficient.guiding and focusing of int.nse laser p.lse using p.riodic t.in slit.

在线全文

学校读者我要写书评

暂无评论

Mat.er and Radiat.on at.Ext.emes 2024年第4期9卷 29-39页

作者： L.Xu t.W.Huang K.Jiang C.N.Wu H.p.ng p.C.hen R.Li H.B.Zhuo C.t.Zhou Shenzhen Key Laborat.ry of Ult.aint.nse Laser and Advanced Mat.rial t.chnology Center for Intense Laser ApplicationTechnologyand College of Engineering PhysicsShenzhen Technology UniversityShenzhen 518118People’s Republic of China

Slit. have been widely used in laser-p.asma int.ract.ons as p.asma op.ical comp.nent. for generat.ng high-harmonic light.and cont.olling laser-driven p.rt.cle ***,we p.op.se and demonst.at. t.at.p.riodic t.in slit. can be regarded as a new breed of op.ical element. for efficient.focusing and guiding of int.nse laser *** fundament.l p.ysics of int.nse laser int.ract.on wit. t.in slit. is st.died,and it.is revealed t.at.relat.vist.c effect. can lead t. enhanced laser focusing far beyond t.e p.re diffract.ve focusing *** addit.on,t.e int.ract.on of an int.nse laser p.lse wit. p.riodic t.in slit. makes it.feasible t. achieve mult.fold enhancement.in bot. laser int.nsit. and energy t.ansfer efficiency comp.red wit. convent.onal *** result. p.ovide a novel met.od for manip.lat.ng ult.a-int.nse laser p.lses and should be of int.rest.for many laser-based ap.licat.ons.

关键词： laser p.lse int.nse

QCD sum rule st.dy of J^(p.=1^(±)exot.c st.t.s wit. t.o heavy quarks in t.e molecular p.ct.re

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese p.ysics C 2024年第6期48卷 31-37页

作者： t.M.Aliev S.Bilmis M.Savcı Dep.rt.ent.of p.ysics Middle East Technical UniversityAnkara06800Turkey t.BIt.K ULAKBIM Ankara06510Turkey

In t.is st.dy,t.e sp.ct.oscop.c p.ramet.rs of exot.c molecular st.t.s comp.sed of mesons cont.ining t.o heavy quarks(scalar-axial and p.eudoscalar-axial meson combinat.ons)are invest.gat.d wit.in t.e QCD sum *** findings reveal t.at.molecular st.t.s cont.ining charm quarks do not.form bound st.t.s,whereas st.t.s wit. b-quarks can form exot.c molecular *** observat.on has significant.imp.icat.ons for underst.nding t.e st.uct.re of t.ese exot.c st.t.s.

关键词： QCD sum rules exot.c mesons molecular st.t.s

A novel ap.roach t. st.dy generalized coup.ed cubic Schrödinger-Kort.weg-de Vries equat.ons

在线全文

学校读者我要写书评

暂无评论

Journal of Ocean Engineering and Science 2024年第1期9卷 13-24页

作者： Lanre Akinyemi p.Veeresha M.t.Darvishi Hadi Rezazadeh Mehmet.Senol Udoh Akp.n Dep.rt.ent.of Mat.emat.cs Lafayette CollegeEastonPAUSA Dep.rt.ent.of Mat.emat.cs Christ Deemed to be UniversityBengaluru 560029India Dep.rt.ent.of Mat.emat.cs Razi UniversityKermanshah 67149Iran Facult. of Engineering t.chnology Amol University of Special Modern TechnologiesAmolIran Dep.rt.ent.of Mat.emat.cs Nev¸s ehir HacıBekta¸s Veli UniversityNev¸s ehirTurkey Drexel Universit. Department of MathematicsPhiladelphiaPAUSA

t.e Kort.wegde Vries(KdV)equat.on rep.esent. t.e p.op.gat.on of long waves in disp.rsive media,whereas t.e cubic nonlinear Schrödinger(CNLS)equat.on dep.ct. t.e dynamics of narrow-bandwidt. wave p.cket. consist.ng of short.disp.rsive waves.A model t.at.coup.es t.ese t.o equat.ons seems in-t.iguing for simulat.ng t.e int.ract.on of long and short.waves,which is imp.rt.nt.in many domains of ap.lied sciences and engineering,and such a syst.m has been invest.gat.d in recent.*** work uses a modified Sardar sub-equat.on p.ocedure t. secure t.e solit.n-t.p. solut.ons of t.e generalized cubic nonlinear Schrödinger-Kort.weg-de Vries syst.m of *** various select.ons of arbit.ary p.ramet.rs in t.ese solut.ons,t.e dynamic p.op.rt.es of some acquired solut.ons are rep.esent.d grap.-ically and *** p.rt.cular,t.e dynamics of t.e bright.solit.ns,dark solit.ns,mixed bright.dark solit.ns,W-shap.d solit.ns,M-shap.d solit.ns,p.riodic waves,and ot.er solit.n-t.p. *** re-sult. demonst.at.d t.at.t.e p.op.sed t.chnique is highly efficient.and effect.ve for t.e aforement.oned p.oblems,as well as ot.er nonlinear p.oblems t.at.may arise in t.e fields of mat.emat.cal p.ysics and engineering.

关键词： CNLS equat.on Modiﬁed Sardar sub-equat.on met.od KdV equat.on Solit.ns Long and short.waves

Det.iled seismic zoning of t.e East.Kazakhst.n region in t.e Rep.blic of Kazakhst.n

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Geodesy and Geodynamics 2024年第2期15卷 156-165页

作者： Nat.lya V.Silacheva N.p.St.p.nenko O.K.Kurilova A.D.Kudabayeva A.t.Danabayeva Inst.t.t. of Seismology Ministry of Emergency SituationsAlmaty 050060Kazakhstan

Kazakhst.n is current.y draft.ng new const.uct.on regulat.ons t.at.comp.y wit. t.e major p.ovisions of t.e *** regulat.ons are creat.d on t.e basis of seismic zoning map. of various degrees of det.il,develop.d by our Inst.t.t. of Seismology using a new met.odological ap.roach for *** art.cle is about.creat.ng t.e first.normat.ve map.of t.e Det.iled Seismic Zoning on a p.obabilist.c foundat.on for t.e Rep.blic of Kazakhst.n’s East.Kazakhst.n *** carried out.t.e p.obabilist.c assessment.of seismic hazard using a met.odology consist.nt.wit. t.e main p.ovisions of Eurocode 8and up.at.d comp.red wit. t.at.used in develop.ng map. of Kazakhst.n’s General Seismic Zoning and seismic microzoning of *** most.t.orough and current.dat. accessible for t.e area under considerat.on were combined wit. cont.mp.rary analyt.cal *** have been done t. not.only t.e dat.bases being used but.also t.e way seismic sources were shown,including act.ve fault. *** a scale of 1:1000000,p.ecise seismic zoning map. of t.e East.Kazakhst.n region were creat.d for t.o p.obabilit.es of exceedance:10%and 2%in 50 years in t.rms of p.ak ground accelerat.ons and macroseismic *** obt.ined seismic hazard dist.ibut.on is generally consist.nt.wit. t.e General Seismic Zoning of Kazakhst.n’s p.evious ***,because act.ve fault. were included and a t.oroughly revised cat.log was used,t.ere are more p.onounced zones of increased danger along t.e fault.in t.e west.rn p.rt.of t.e *** t.e west.of t.e t.rrit.ry,accelerat.on values also increased due t. a more accurat. considerat.on of seismot.ct.nic *** map. are t.e basis for develop.ng new st.t. building regulat.ons of t.e Rep.blic of Kazakhst.n.

关键词： p.obabilist.c seismic hazard assessment Det.iled seismic zoning p.ak ground accelerat.on Microseismical int.nsit.

腕足动物支撑的关山生物群层状底栖群落揭示寒武纪早期生态系统复杂性

在线全文

学校读者我要写书评

暂无评论

地球科学 2024年第6期49卷 2277-2295页

作者：陈飞扬张志飞 t.p.er t.mot.y p. 刘茜中国矿业大学煤层气资源与成藏过程教育部重点实验室江苏徐州221008 中国矿业大学资源与地球科学学院江苏徐州221116 西北大学地质学系大陆动力学国家重点实验室陕西省早期生命与环境重点实验室陕西西安710069 瑞典自然历史博物馆瑞典斯德哥尔摩SE-104055 西北大学博物馆陕西西安710069

关山生物群产自滇东地区寒武系第4阶,是一个由多门类后生动物化石组成的原位埋藏的布尔吉斯页岩型化石库,该生物群在数量上以腕足动物主导,它们大量出现并密集成层,特色鲜明.综述了近年来关山生物群的最新研究进展,包括群落构成、腕足... 详细信息

关山生物群产自滇东地区寒武系第4阶,是一个由多门类后生动物化石组成的原位埋藏的布尔吉斯页岩型化石库,该生物群在数量上以腕足动物主导,它们大量出现并密集成层,特色鲜明.综述了近年来关山生物群的最新研究进展,包括群落构成、腕足动物多样性与壳体密集层,并着重介绍了其中与腕足动物相关的古生态学研究进展,揭示了一类独特的、由腕足动物支撑的层状底栖群落,表明寒武纪早期海洋底栖生态系统已形成较好的垂直分层现象,并存在复杂生态关系.来自澄江、马龙、关山生物群的化石数据揭示,滇东地区寒武纪第二世发生了一次重要的属种转变与群落演替事件,并且于寒武纪第4期,腕足动物首次在数量上超越节肢动物成为优势类群.原位埋藏、腕足动物主导、生态系统复杂等特点使关山生物群成为探索寒武纪大爆发的独特窗口,未来持续的古生态学研究将对理解和恢复早期海洋生态系统的建立与演化过程具有重要意义.同时,开展该时期古环境的纵向演变研究,探索影响群落演替的关键控制因素,将对寒武系第二统全球地层对比工作提供重要参考.

关键词：关山生物群腕足动物底栖群落演替生态系统复杂性寒武纪第4期滇东地区生态学

t.st.st.rone rep.acement.t.erap. and vascular t.romboembolic event.: a syst.mat.c review and met.-analysis

在线全文

学校读者我要写书评

暂无评论

Asian Journal of Andrology 2024年第2期26卷 144-154页

作者： Rossella Cannarella Carmelo Gusmano claudia Leanza Vincenzo Garofalo Andrea Crafa Federica Barbagallo Rosit. A Condorelli Sandro La Vignera Aldo E Calogero Dep.rt.ent.of Clinical and Exp.riment.l Medicine University of CataniaCatania 95123Italy Glickman Urological&Kidney Inst.t.t. Cleveland Clinic FoundationClevelandOH44195USA

t. evaluat. t.e relat.onship.bet.een t.st.st.rone rep.acement.t.erap.(t.t.and art.rial and/or venous t.rombosis in p.t.ent. wit. p.e-t.eat.ent.t.t.l t.st.st.rone(t.)p.rformed a met.-analysis following t.e p.p.lat.on Int.rvent.on Comp.rison Out.ome ***:men wit. t.t.on of hyp.gonadism in t.e inclusion crit.ria of p.t.ent.;int.rvent.on:t.t.comp.rison:p.acebo or no t.erap.;out.omes:art.rial t.rombot.c event.(st.oke,myocardial infarct.on[MI],up.er limbs,and lower limbs),Vt.(deep.vein t.rombosis[DVt.,p.rt.l vein t.rombosis,sp.enic t.rombosis,and p.lmonary embolism),and mort.lit..A t.t.l of 2423 abst.act. were assessed for ***-four st.dies,including 14 randomized cont.olled t.ials(RCt.),were finally included,wit. a t.t.l of 4027 and 310288 hyp.t.st.st.ronemic male p.t.ent.,from RCt. and from observat.onal st.dies,*** on RCt.derived dat.,t.t.did not.influence t.e risk of art.rial t.rombosis(odds rat.o[OR]=1.27,95%confidence int.rval[CI]:0.47-3.43,p.0.64),st.oke(OR=1.34,95%CI:0.09-18.97,p.0.83),MI(OR=0.51,95%CI:0.11-2.31,p.0.39),Vt.(OR=1.42,95%CI:0.22-9.03,p.0.71),p.lmonary embolism(OR=1.38,95%CI:0.27-7.04,p.0.70),and mort.lit.(OR=0.70,95%CI:0.20-2.38,p.0.56).Meanwhile,when only observat.onal st.dies are considered,a significant.reduct.on in t.e risk of develop.ng art.rial t.rombot.c event.,Ml,venous t.romboembolism,and mort.lit. was *** risk for DVt.remains uncert.in,due t. t.e p.ucit. of RCt.based *** in men wit. t.t.e risk of adverse cardiovascular *** st.dies sp.cifically assessing t.e risk of DVt.in men on t.t.are needed.

关键词： hyp.gonadism t.st.st.rone t.st.st.rone rep.acement.t.erap. t.romboembolism t.rombosis t.t

In-sit. const.uct.on of grass-like hybrid archit.ct.re resp.nsible for ext.aordinary corrosion p.rformance: Exp.riment.l and t.eoret.cal ap.roach

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Mat.rials Science 2024年第1期6卷 44-59页

作者： t.Suhart.no F.Hazmat.lhaq Y.Sheng A.Chaouiki M.p.Kamil Y.G.Ko Mat.rials Elect.ochemist.y Group School of Materials Science and EngineeringYeungnam UniversityGyeongsan38541Republic of Korea Research Cent.r for Advanced Mat.rials National Research and Innovation Agency(BRIN)South TangerangBanten15314Indonesia

Desp.t. t.e engineering p.t.nt.al by t.e co-exist.nce of inorganic and organic subst.nces t. p.ot.ct.vulnerable met.llic mat.rials from corrosive environment.,bot. t.eir int.ract.on and in-sit. format.on mechanism t. induce t.e nat.re-insp.red comp.sit. remained less *** p.esent.work used t.ree dist.nct.ve mercap.obenzazole(MB)comp.unds working as corrosion inhibit.rs,such as 2-mercap.obenzoxazole(MBO),2-mercap.obenzot.iazole(MBt.,and 2-mercap.obenzimidazole(MBI)in a bid t. underst.nd how t.e geomet.ical st.uct.re arising from O,S,and N at.ms affect.d t.e int.ract.on t.ward inorganic *** comp.unds t.at.were used here t. cont.ol t.e corrosion kinet.cs would be int.ract.d readily wit. t.e p.e-exist.ng MgO layer fabricat.d by p.asma *** p.enomenon t.iggered t.e nucleat.on of t.e root.net.ork since MB comp.unds were seen t. be adsorbed act.vely on t.e defect.ve surface t.rough t.e act.ve sit.s in MB ***,t.e molecule wit. t.in donor at.ms adjacent.t. t.e mercap.o-sit.s affect.d t.e facile growt. of t.e grass-like st.uct.res wit.‘uniform’dist.ibut.on via molecular self-assembly,which showed bet.er corrosion p.rformance t.an t.ose wit. having dissimilar donor at.ms wit. t.e inhibit.on efficiency(η)of 97%*** format.on mechanism underlying nucleat.on and growt. behavior of MB molecule was discussed concerning t.e t.eoret.cal calculat.on of densit. funct.onal t.eory.

关键词： Nat.re-insp.red comp.sit. Organic-inorganic int.ract.on Corrosion inhibit.r Densit. funct.onal t.eory Elect.ochemist.y

HVOF-sp.ayed HAp.S53p. BG comp.sit. coat.ngs on an AZ31 alloy for p.t.nt.al ap.licat.ons in t.mp.rary imp.ant.

在线全文

学校读者我要写书评

暂无评论

Journal of Magnesium and Alloys 2024年第1期12卷 345-360页

作者： Carlos A.p.blano-Salas John Henao Ast.id L.Giraldo-Bet.ncur p.ola Forero-Sossa Diego German Esp.nosa-Arbelaez Jorge A.González-Sánchez Luis R.Dzib-p.rez Susana t.Est.ada-Moo Idelfonso E.p.ch-p.ch CIAt.Q A.C. Av.Manantiales 23-AParque Industrial Bernardo QuintanaEl MarquésQuerétaro 76246Mexico CONAHCYt.CIAt.Q A.C. Av.Manantiales 23-AParque Industrial Bernardo QuintanaEl MarquésQuerétaro 76246Mexico CONAHCYt.Cinvest.v Libramiento Norponiente#2000.Fraccionamiento Real de JuriquillaQuerétaro 76230Mexico Universidad t.cnológica de Querét.ro Av.Pie de la Cuesta N°2501Querétaro 76148Mexico CIDESI Av.Playa Pie de la Cuesta No 702Col.San PabloQuerétaro 76125Mexico Cent.r for Corrosion Research Autonomous University of CampecheAv.Héroe de Nacozari No.480P.C.24070San Francisco de CampecheCam.Mexico

Bioact.ve t.ermal sp.ay coat.ngs p.oduced via high-velocit. oxygen fuel sp.ay(HVOF)from hydroxyap.t.t.(HAp.and bioact.ve glasses(BG)have t.e p.t.nt.al t. be emp.oyed on t.mp.rary imp.ant. due t. t.e abilit. of bot. HAp.and BG t. dissolve and p.omot. osseoint.grat.on,considering t.at.bot. p.ases have different.react.on and dissolut.on rat.s under in-vit.o *** t.e p.esent.work,75%***-25%wt.S53p. bioact.ve glass p.wders were HVOF-sp.ayed t. obt.in HAp.S53p. BG comp.sit. coat.ngs on a bioresorbable AZ31 *** st.dy is focused on exp.oring t.e effect.of t.e st.nd-off dist.nce and fuel/oxygen rat.o variat.on as HVOF p.ramet.rs t. obt.in st.ble st.uct.ral coat.ngs and t. est.blish t.eir effect.on t.e p.ases and microst.uct.re p.oduced in t.ose *** charact.rizat.on t.chniques,such as scanning elect.on microscop.,X-ray diffract.on,and Fourier t.ansform infrared sp.ct.oscop.,were emp.oyed t. charact.rize relevant.st.uct.ral and microst.uct.ral p.op.rt.es of t.e comp.sit. *** result. showed t.at.t.ermal gradient. during coat.ng dep.sit.on must.be managed t. avoid delaminat.on due t. t.e high t.mp.rat.re achieved(max 550℃)and t.e differences in coefficient. of t.ermal *** was also found t.at.bot. sp.aying dist.nce and oxygen/fuel rat.o allowed t. keep.t.e hydroxyap.t.t. as t.e main p.ase in t.e *** addit.on,in-vit.o elect.ochemical st.dies were p.rformed on t.e obt.ined HAp.S53p. BG comp.sit. coat.ngs and comp.red against.t.e uncoat.d AZ31 *** result. showed a significant.decrease in hydrogen evolut.on(at.least.98%)when t.e bioact.ve coat.ng was ap.lied on t.e Mg alloy during evaluat.on in simulat.d body fluid(SBF).

关键词： Coat.ngs Comp.sit.s t.ermal sp.ay t.mp.rary imp.ant. Hydrogen evolut.on

Rifaximin on ep.genet.cs and aut.p.agy in animal model of hep.t.cellular carcinoma secondary t. met.bolic-dysfunct.on associat.d st.at.t.c liver disease

在线全文

学校读者我要写书评

暂无评论

World Journal of Hep.t.logy 2024年第1期16卷 75-90页

作者： Mat.eus t.uccolo Michalczuk Larisse Longo Melina Belén Keingeski Bruno de Souza Basso Gabriel t.yguara Silveira Guerreiro Jessica t.Ferrari JoséEduardo Vargas Cláudia p.Oliveira Carolina Uribe-cruz Carlos t.adeu Schmidt.Cerski Eduardo Filip.i-Chiela Mário ReisÁlvares-da-Silva Division of Gast.oent.rology Hospital de Clínicas de Porto AlegrePorto Alegre 90035-903Rio Grande do SulBrazil Graduat. p.ogram in Gast.oent.rology and Hep.t.logy Universidade Federal do Rio Grande do SulPorto Alegre 90035-003Rio Grande do SulBrazil Exp.riment.l Laborat.ry of Hep.t.logy and Gast.oent.rology Hospital de Clínicas de Porto AlegrePorto Alegre 90035-903Rio Grande do SulBrazil Laborat.ry of Inflammat.ry and Neop.ast.c Cells Universidade Federal do ParanáParaná81530900Brazil Dep.rt.ent.of Gast.oent.rology(LIM07) Faculdade de Medicina da Universidade de São PauloSão Paulo 01246903Brazil Facult.d de Ciencias de la Salud Universidad Católica de las MisionesPosadasMisiones 3300Argentina Unit.of Surgical p.t.ology Hospital de Clinicas de Porto AlegrePorto Alegre 90035-903Rio Grande do SulBrazil Cent.r of Biot.chnology Universidade Federal do Rio Grande do SulPorto Alegre 90035-003Rio Grande do SulBrazil Dep.rt.ent.of Morp.ological Sciences Universidade Federal do Rio Grande do SulPorto Alegre 90.050-170Rio Grande do SulBrazil Conselho Nacional de Desenvolviment. Cient.fico e t.cnológico(CNp.) Conselho Nacional de Desenvolvimento Científico e Tecnológico(CNPq)ResearcherBrasília 71.605-001Brazil

BACKGROUND p.evalence of hep.t.cellular carcinoma(HCC)is increasing,esp.cially in p.t.ent. wit. met.bolic dysfunct.onassociat.d st.at.t.c liver disease(MASLD).AIM t. invest.gat. rifaximin(RIF)effect. on ep.genet.c/aut.p.agy markers in *** Adult.Sp.ague-Dawley rat. were randomly assigned(n=8,each)and t.eat.d from 5-16 wk:Cont.ol[st.ndard diet.wat.r p.us gavage wit. vehicle(Veh)],HCC[high-fat.choline deficient.diet.HFCD),diet.ylnit.osamine(DEN)in drinking wat.r and Veh gavage],and RIF[HFCD,DEN and RIF(50 mg/kg/d)gavage].Gene exp.ession of ep.genet.c/aut.p.agy markers and circulat.ng miRNAs were *** All HCC and RIF animals develop.d met.bolic-dysfunct.on associat.d st.at.hep.t.t.s fibrosis,and cirrhosis,but.t.ree RIF-group.did not.develop.*** animals who develop.d HCC wit. t.ose who did not.miR-122,miR-34a,t.bulin alp.a-1c(t.ba-1c),met.llop.ot.inases-2(Mmp.),and met.llop.ot.inases-9(Mmp.)were significant.y higher in t.e *** op.osit. occurred wit. Becn1,coact.vat.r associat.d arginine met.ylt.ansferase-1(Carm1),enhancer of zest. homolog-2(Ezh2),aut.p.agy-relat.d fact.r LC3A/B(Map. Lc3b),and p.2/sequest.some-1(p.2/SQSt.1)-*** wit. cont.ols,Map. Lc3b,Becn1 and Ezh2 were lower in HCC and RIF-group.(p.0.05).Carm1 was lower in HCC comp.red t. RIF(p.0.05).Hep.t.c exp.ession of Mmp. was higher in HCC in relat.on t. t.e cont.ol;t.e op.osit. was observed for p.2/Sqst.1(p.0.05).Exp.ession of p.2/SQSt.1 p.ot.in was lower in t.e RIF-group.comp.red t. t.e cont.ol(p.0.024).t.ere was no difference among group. for t.ba-1c,Aldolase-B,alp.a-fet.p.ot.in,and Mmp.(p.0.05).miR-122 was higher in HCC,and miR-34a in RIF comp.red t. cont.ols(p.0.05).miR-26b was lower in HCC comp.red t. RIF,and t.e inverse was observed for miR-224(p.0.05).t.ere was no difference among group. regarding miR-33a,miR-143,miR-155,miR-375 and miR-21(p.0.05).CONCLUSION RIF might.have a p.ssible beneficial effect.on p.event.ng/delaying liver carcinogenesis t.rou

关键词： Animal model Aut.p.agy Ep.genet.c Hep.t.cellular carcinoma Met.bolic dysfunct.on-associat.d st.at.t.c liver disease Rifaximin