简介:
简介:Agenerationsystemofcontinuous-variable(CV)quadripartiteentangledstatebasedontwocascadedsecondharmonicgeneration(SHG)cavitiesbelowthethresholdisinvestigated.Tworeflectedfundamentalbeamsofthefirstcavity,thereflectedsecond-harmonicbeamandtheoutputfourth-harmonicbeamofthesecondcavityareprovedtobeentangled,andthedependenceoftheentanglementdegreeonthenormalizedfrequency,pumpparameter,fourth-harmoniclossparameter,andsecond-harmoniclossparameterisalsoanalyzed.DuetothefactthatthecavityparametersandthenonlinearcrystalsofthetwoSHGcavitiescanbefreelychosen,thepracticalityoftheproposedprotocolisrelativelyperfectandthesystemcanalsobeextendedtothepreparationofmulticolorentangledstatesforaquantumnetwork.
简介:碳和氢源於生物的气体的同位素的作文为它的产生小径和reservoiring特征的学习是很重要的。在这篇论文,在中国的源於生物的煤气的水库的形成小径和reservoiring特征以碳和氢被描述从10座源於生物的煤气的水库的31件煤气的样品的同位素的作文。学习表演氢这些源於生物的煤气的水库的同位素的作文能被划分成三间隔:δ>−200‰,−250‰<;δ<-−200‰和δ<−250‰。先进相信在新鲜的水是的大陆人的条件下面的源於生物的气体的主要产生小径醋性的发酵。我们的研究结果证明在海洋的外形的条件下面的源於生物的气体的产生小径是典型公司2-减小,源於生物的气体有重氢同位素的作文:它的δ价值比−200‰高;在大陆人外形的条件下面的源於生物的气体被一样的方法,而是它的氢也产生同位素的作文比简历,基因气体在典型海洋的外形状况下面产生了轻:−250‰<;δ<−200‰,δ价值可能与在古老的湖的水媒介的咸度有关。从Qaidam盆的相关数据,这能被看见源於生物的甲烷的同位素的作文有的氢有增加水的咸度的一样的变化趋势中等。有源於生物的煤气的水库,在大陆人外形的条件下面在过渡区域形成。这些煤气的水库是源于公司2-reduction和醋性的发酵,其形成可能与中等的古老的水和相对高的地热的坡度的非变体的咸度有关,盒子在Baoshan盆被遇到。在这些区域产生的源於生物的气体有轻氢同位素的作文:δ<−250‰,和相对重的碳同位素的作文。在碳之间有相当强壮的否定关联同位素的作文和氢同位素的作文。产生机制和碳的小径,和氢源於生物的气体的同位素的作文可以被用来查明从自然界的源於生物的煤气的样品是否具有�
简介:IntheEasyDynmultibodyopensourceproject,computeralgebrahasbeenusedfromthebeginningtogeneratetheexpressionsofvelocitiesandaccelerationsofthebodies,bysymbolicdifferentiationoftheirposition.Originally,theMuPADcomputeralgebrasystemhadbeenretainedbecauseitwasfreelyavailablefornoncommercialpurposesandshowedverygoodtechnicalfeatures.Unfortunately,MuPADisnowadaysonlyavailablethroughcommercialchannelsandneedstobereplacedtokeepEasyDynpubliclyavailable.ThispaperpresentswhyXcas/Giacisfinallyselected,amongotherlong-termpromisingprojectslikeAxiom,Maxima,SageorYacas.Amongthechoicecriteria,theaccessibility,theportability,theeaseofuse,theautomaticexporttoClanguage,andthesimilaritywiththeMuPADlanguageareallconsidered.TheperformancesoftheMuPADandXcas/Giacimplementationsarealsocomparedonsomeexamples.
简介:Airfoilself-noiseisacommonphenomenonformanyengineeringapplications.Aimingtostudytheunderlyingmechanismofairfoilself-noiseatlowMachnumberandmoderateReynoldsnumberflow,anumericalinvestigationispresentedonnoisegenerationbyflowpastNACA0018airfoil.Basedonahigh-orderaccuratenumericalmethod,boththenear-fieldhydrodynamicsandthefar-fieldacousticsarecomputedsimultaneouslybyperformingdirectnumericalsimulation.Themeanflowpropertiesagreewellwiththeexperimentalmeasurements.Thecharacteristicsofaerodynamicnoiseareinvestigatedatvariousanglesofattack.Theobtainedresultsshowthatincliningtheairfoilcouldenlargeturbulentintensityandproducelargerscaleofvortices.Thesoundradiationismainlytowardstheupperandlowerdirectionsoftheairfoilsurface.Athigherangleofattack,thetonalnoisetendstodisappearandthenoisespectrumdisplaysbroad-bandfeatures.
简介:Weconductedacomprehensivestudytoinvestigatetheaerodynamiccharacteristicsandforcegenerationoftheelytraofabeetle,Allomyrinadichotoma.Ouranalysisincludedwindtunnelexperimentsandthree-dimensionalcomputationalfluiddynamicssimulationsusingANSYS-CFXsoftware.Ourfirstapproachwasaquasi-staticstudythatconsideredtheeffectofinducedflappingflowduetotheflappingmotionofthefore-wings(elytra)atafrequencyofaround30Hzto40Hz.Thedihedralanglewasvariedtorepresentflappingmotionduringtheupstrokeanddownstroke.Wefoundthatanelytronproducespositiveliftat0°geometricangleofattack,negativeliftduringtheupstroke,andalwaysproducesdragduringboththeupstrokeanddownstroke.Wealsofoundthattheliftcoefficientofanelytrondoesnotdropevenataveryhighgeometricangleofattack.Forabeetlewithabodyweightof5g,basedonthequasi-staticmethod,thefore-wings(elytra)canproduceliftoflessthan1%ofitsbodyweight.
简介:Inthehostileandhighlycorrosivemarineenvironment,advancedcompositematerialscanbeusedinmarinecurrentturbinesduetotheirhighstrength-to-weightratiosandexcellentresistancetocorrosion.Acompositematerialmarinecurrentturbine(CMMCT),whichhassignificantadvantagesovertraditionaldesigns,hasbeendevelopedandinvestigatednumerically.Asubstantialimprovementinturbineperformanceisachievedbyplacementofaducttoconcentratetheenergy.Computationalfluiddynamics(CFD)resultsshowthattheextractedpowerofaductedCMMCTcanbethreetofourtimesthepowerextractedbyabareturbineofthesameturbinearea.TheresultsprovideaninsightintothehydrodynamicdesignandoperationofaCMMCTusedtoshortenthedesignperiodandimprovetechnicalperformance.
简介:MassselectionforfastgrowthwasconductedinthreePacificoyster(Crassostreagigas)stocksfromChina,JapanandKoreausingpreviouslyestablishedlines(CS1,JS1,andKS1).Todeterminewhethercontinuousprogresscanbeachievedbyselectionforgrowth,theprogenyofthreesecond-generationPacificoysterlineswasselectedforshellheightandevaluatedviaa400-dayfarmingexperiment.Whenharvestedattheendoftheexperiment,theselectedcrossesofCS2,JS2,andKS2linesgrewby9.2%,10.2%and9.6%largerthanthecontrolcrosses,respectively.Duringgrow-outstage,thegeneticgainofthreeselectedlineswas(10.2±1.4)%,(10.4±0.3)%,and(8.4±1.6)%,respectively;andthecorrespondingrealizedheritabilitywas0.457±0.143,0.312±0.071and0.332±0.009,respectively.Theseresultsindicatedthattheselectionforfastgrowthachievedsteadyprogressinthesecondgenerationofoyster.OurworkprovidessupportiveevidenceforthecontinuityofthePacificoysterselectivebreedingprogram.
简介:
简介:Weexperimentallyreportonthegenerationofsingleandmultipledissipativesolitonvianonlinearpolarizationrotationtechnique.Thespectrumofthemode-lockeddissipativesolitonexhibitstypicalsteepedgeswithaflattop;thepulsedurationis10.07ps.Itisfoundthatwiththepumppowerincreasingfrom110mWto161mW,thetopofthemode-lockedspectrumbecomesflaterandthe3-dBspectralbandwidthisbroadened,whichindicatesthatthegain-dispersioneffectisloweredunderstrongerpump.However,thefullbandwidthofthespectrumisnarrowed,whichprovesthatthespectralfiltereffectincreasesandovercomestheeffectofself-phasemodulationinducedspectralbroadening.Suchaphenomenonwasnotnoticednorreportedbefore.Ourexperimentalsodemonstratesthatthepulseintervalishighlydependentontheinputpumppower:withpumppowerincreasing,thepulseintervaltendstowardsmoreuniform.Soourobservationqualitativelyanalyzestherelationshipbetweenmode-lockedpulsecharacteristicsandinputpumppower.
简介:AbstractCellular immunotherapy harnesses the body's own immune system to fight cancer by using engineered T cells, macrophages, or natural killer (NK) cells. Compared to chimeric antigen receptor T (CAR-T) cells that are commonly used to treat hematological malignancies, CAR-NK cells have shown remarkable therapeutic effectiveness while exhibiting enhanced safety, reduced risk of graft-versus-host disease, fewer side effects, and amplified antitumor efficacy. Preclinical trials have unveiled the high potential of adoptive CAR-NK cell therapy to curtail or even eliminate both hematological malignancies and solid tumors in animal models. We brought forth herein the design principle of CAR-NK cells, highlighted the latest progress in the preclinical testing and clinical trials of CAR-NK cells, briefly delved into discussed major roadblocks in CAR-NK therapy, and discussed potential solutions to surmount these challenges. Given the accelerated progress in both basic and translational studies on immune cell engineering, CAR-NK cell therapy promises to become a serious contender and important addition to the next-generation cell-based immunotherapy.
简介:Next-generationsequencing(NGS)hasbeenrapidlyintegratedintomolecularpathology,dramaticallyincreasingthebreadthgenomicofinformationavailabletooncologistsandtheirpatients.Thisreviewwillexplorethewaysinwhichthisnewtechnologyiscurrentlyappliedtobolstercareforpatientswithsolidtumorsandhematologicalmalignancies,focusingonpracticesandguidelinesforassessingthetechnicalvalidityandclinicalutilityofDNAvariantsidentifiedduringclinicalNGSoncologytesting.