简介：Araliaclata是在东北中国的重要的经济种。为determung最佳幼苗密度的实验在辽宁省的试验性的福雷斯特农场的托儿所被做。Qingyuan县，在1997。为六密度的4个重复实验的结果被单个因素用变化分析分析。幼苗密度在直径的生长上有大效果(在英尺)并且高度。合适的幼苗密度forAraliaelata决心是55鈥?5stems/m2，或330000390000hm2。因此，密度能保险单个幼苗鈥檚质量和幼苗的最大的生产率。

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简介：Traditionally,bonestructureandbonemassareassessedbyobservingtherari-fiedboneonstandardx-rayfilms.However,smallchangesinbonemasscannotbedetectedeffectively.Bythetimelossofbonemasscanbedetectedonthex-ray,thediseaseisalreadyinanadvancestage.Atleast30%ofbonemustbelostbeforeproblemslikeosteoporosiscanbediagnosed.

简介：Weraiseandpartlyanswerthequestion:whetherthereexistsaMarkovsystemwithrespecttowhichthezerosoftheChebyshevpolynomialsaredense,butthemaximumlengthofazerofreeintervalofthenthChebyshevpolynomialdoesnottendstozero.Wealsodrawtheconclu-tionthataMarkovsystem,underanadditionalassumption,isdenseifandonlyifthemaxi-mumlengthofazerofreeintervalofthenthassociatedChebyshevpolynomialtendstozero.

简介：ThispaperdefinestheuppercapacitydensitiesofthesubsetsofR^n,getsuniformlowerboundoftheuppercapacitydensitiesforH^s-almostallpointsoftheHausdorffs-setsortheanalyticsetswithHausdorffdimensionsinR^n,whichimprovestheresultsofWenZhiyingandZhangYiping'spaperin[1].

简介：§1.IntroductionandMainResultLet(X,F)beaJBrXR'-valuedvector.AssumethatwhenX=xisgiven,thereexistsaconditionaldensityofYtobedenotedbyf(y[x),whichisaBorel-measurablefunctionof(x,y).Notethatwedonotassumetheexistenceofadensityfunctionof(X,F).Let(X-i,fi),—,(Xn,Fn)bei.i.d.samplesof(X,F).Ourpurposeistoestimatef(y\x)basedonthesesamples.Thisisaninterestingprobleminviewofeitherpuretheoryorpracticalapplications.MotivatedbytheideasuggestedinkernelandNNestimationsinthetheoryofnonparametricregressionanddensityestimates,thefirstauthorproposesthefollowingtwoclassesofestimatorsoff(y\x):

简介：Therelationshipbetweengainandcarrierdensityisanalysed.Inthequantumwell(QW)lasers,initially,thegainincreasesrapidlywiththecarrierdensityandthenstartstosaturate.ItcanbeseenthatQWlasershaveahigherdifferentialgainbecauseofthestep-likestatedensity,andthatthegainsaturatesathighercarrierdensitiesbecauseoftheconstantstatedensityofthelowestsubband.Itisshownthatsimpleogarithmicgain-carrierdensityismoreaccuratethanthetraditionallinearizedformforaQWlaser.

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简介：Inthispaper,radiation-inducedcrosslinkingmechanismandcharacterizationofthecrosslinkingdensityofF-40andF-4byX-rayphotoelectronspectroscopy(XPS)havebeenstudied.ThedoseofgelationofF-40obtainedfromXPSis4.1×10~4Gy.ItisfoundthatcrosslinkingdensityisthelargestintherangeofcertaindoseforF-40andF-4.

简介：IntheGCMwestudysomepropertiesofπmesonastheGoldstonebosonsinanuclearmatterwithfinitedensity.Usingtheeffectiveactioninanuclearmatter,wecalculatethedecayconstantandπmassasfunctionsofthechemicalpotential.Therelationbetweenthechemicalpotentialandthedensityofanuclearmatterisfirstlygivenhere.Wefindthatfπandmπmonotonouslydecreaseasnuclearmatterdensityincreases.Theresultisconsistentwiththeusualassumptionthatthechiralsymmetryisgraduallyrestoredasthedensityofanuclearmatterincreases.

简介：Inthispaper,thecharacteristicsofdensitycurrentundertheactionofwavesaredescribedwiththehelpofflumeexperimentandtheoreticalanalysis.Thestudyshowsthatturbidwaterundertheac-tionofthewavescanpresentthreetypesofmotion,i.e.significantstratification,fragilestratificationandstrongmixing.Themotionofturbidwaterpresentssignificantstratificationwhen（H/D）/△ρ/ρ1/2≤4.5,generallythisstateisknownasdensitycurrent.Theformulasofmotionvelocity,thickness,anddischargeofdensitycurrentmovingonhorizontalbottomarederivedbyuseofba-sicequationssuchasmomemtumequation,equationofenergyconservationandcontinuityequationoffluid.Thetime-averagevelocityandthethicknessofdensitycurrentundertheactionofwaveshavearela-tionshipwithsuchparametersasrelativedensity（△ρ/ρ）,waveheight（H）,andwaterdepth（D）.Whentheseparametersaredetermined,thetime-averagethicknessandmotionvelocityofdensitycurrentareal-sodetermined.Therelat

简介：DensityofmoltenNiandNi-Walloyswasmeasuredinthetemperaturerangeof1773～1873Kwithasessiledropmethod.ThedensityofmoltenNiandNi-Walloystrendstodecreasewithincreasingtemperature.ThedensityandmolarvolumeofthealloystrendtoincreasewithincreasingWconcentrationinthealloys.ThecalculationresultshowsanidealmixingofNi-Walloys.

简介：Inordertostudytheeffectoftheparameterssuchastheenergydensityandthegasvelocityonthetransportrateofions,theappliedforceandthemotionlawofchargedparticlesintheelectricfieldofcoronadischargesatatmosphericpressureisinvestigatedinthispaper.Asaresult,whenthegasvelocityisraisedfrom1.5m/sto25m/sforanenergydensityof0.4mJ/cm~3,theionictransportrateincreasesfrom5.4×10~8/cm~3.sto8×10~(10)/cm~3.s,whichisanincreaseofovertwoordersofmagnitude.However,inthe-zonesof-streamerandglowdischarges,theeffectoftheinputehergydensityandtheenergydensityofgasionizationonthetransportrateisbelowoneorderofmagnitude.Inconclusion,theincreaseofchargedparticlemomentumcanbeamajorfactorinraisingthetransportrateandreducingthevolumeoftheplasmasources.

简介：Travelingandstationaryinternalhydraulicjumpsindensitycurrentswithpositiveornegativeentrainmentcoefficientswereanalyzedbasedonsimpleassumptions.Anexpressionofinternalhydraulicjumpswithentrainmentcoefficientswasderived.Experimentaldata,publishedinliterature,ofstationaryinternalhydraulicjumpsinturbid,thermalandsalinedensitycurrentsincludingmeasuredvaluesofwaterentrainmentwereusedtocomparewiththeory.Comparisonwasalsomadeoftravelinginternalhydraulicjumpsbetweenmeasureddataandtheory.

简介：Wecalculatethetwo-pioncorrelationfunctionforanexpandinghadronsourcewithafinitebaryondensity.Thespace-timeevolutionofthesourceisdescribedbyrelativistichydrodynamicsandtheHanbury-Brown-Twiss(HBT)radiusisextractedaftereffectsofcollectiveexpansionandmultiplescatteringontheHBTinterferometryhavebeentakenintoaccount,usingquantumprobabilityamplitudesinapath-integralformalism.WefindthatthisradiusissubstantiallysmallerthantheHBTradiusextractedfromthefreeze-outconfiguration.

简介：交往的费米子的统计性质与配对相互作用的包括为各种各样的尖动量被学习了。为几个原子核的尖动量上的批评温度的依赖，被学习了。是的年著名计算机生产厂商精力为~(28)的尖动量的功能Si和~(24)Mg原子核被计算了直到刺激精力的60.0兆电子伏。计算限制尖时刻一与艾尔由~(12)生产了的~(26)的试验性的结果相比C+~(14)N反应。为non-zeroangular动量的相关原子水平密度为~(44)被计算了Ti和~(136)Ba原子核。结果与他们从近似公式获得的相应价值相比。

简介：Letbethecollectionofm-timescontinuouslydifferentiableprobabilitydensitiesfonRdsuchthat丨Daf（x1）-Daf（x2）丨≤M‖x1-x2‖βforx1,x2∈Rd,[a]=m,whereDadenotesthedifferentialoperatordefinedbyDa=（[a]）/（x1a…xdad）.UnderratherweakconditionsonK（x）,thenecessaryandsufficientconditionsforsup丨n（x）-f（x）丨=0((（logn/n）λ/（d+3λ）,λ=m+β,f∈arethat∫xaK（xi）dx=0for0<[a]≤m.Finallytheconvergencorateatapointisgiven.

简介：LetXbead-dimensionalrandomvectorwithunknowndensityfunctionf（z）=f（z1,···,zd）,andletfnbetehnearestneighborestimatoroffproposedbyLoftsgaardenandQuesenberry（1965）.Inthispaper,weestablishedthelawoftheiteratedlogarithmoffnforgeneralcaseofd≥1,whichgivestheexactpointwisestrongconvergencerateoffn.

简介：Thispaperintroducesthefundamentalprincipleandfeaturesofmagneto-opticalstoragetechnology,anddiscusesthetrendandaseriesofkeytechniquesforincreasingthedatastoragedensityofmagneto-opticaldisk.ThethreewaysincludingMOmedia,recordingmethodandreadoutmethodforincreasingthediskcapacityhavebeendiscussed.Moreover,theimportancewiththeexchange-coupledeffectbetweenthemagneticlayersandrecordingdomainmorphologyisemphasized.

简介：Adensityfunctionaltheoryisappliedtocalculatingthelocaldensityprofilesofcolloidsconfinedinaslit-likeporeaswellastheradialdistributionfunctionsofbulkcolloids.Theinteractionbetweenthecolloidalparticlesisdescribedusingahard-coreYukawamodel.TheexcessHelmholtzenergyfunctionalisacombinationofthemodifiedfundamentalmeasuretheoryofYuandWu(2002)forthehard-corecontributionandacorrectedmean-fieldtheoryfortheattractivecontribution.ComparisonwiththeresultsfromtheMonteCarlosimulationsshowsthatthecorrectedtheoryimprovesthedensityprofilesofcolloidsinthevicinityofcontactovertheoriginalmean-fieldtheory.Boththepresentcorrectedtheoryandsimulationssuggestthattherearedepletionanddesorptionforthecolloidwithstrongattractionbetweenparticlesatlowtemperature.