简介：Objective:Toinvestigatetheproliferativeeffectofkeratinocytegrowthfactor(KGF-2)onhumanadultkeratinocytes.Methods:Thestandardmediumwaskeratinocytegrowthmediumwithoutbovinepituitaryextract(BPE),hydrocortisoneorepidermalgrowthfactor(EGF).Keratinocytesfroma48-year-oldsubjectwereculturedandseededondisheswithstandardmediumofEGFincelldensityof2×104/32mm2.After24hours,themediumwasreplacedbythestandardmediumwith0,4,16,125and500ng/mlKGF-2,respectively.ThestandardmediumwithEGFwasusedasthepositivecontrolandthestandardmediumwithoutEGForKGF-2wasusedasthenegativecontrols.Thegrowthofkeratinocyteswasmonitoredby3-(4,5-dimethythiazol-2-yl)-2,5dipheyltetrazoliumbromide(MTT)assayandbyphotographsondays3,5and7,respectively.Results:KGF-2inconcentrationsof4-500ng/mlshowedasignificantproliferativeeffectondays5and7ascomparedwiththatofthenegativecontrols(P<0.01).Onday3thecellswereproliferatedto1.5-2.5-fold,onday5to3-5-foldandonday7to3-12-foldinKGF-2mediumasthatofthenegativecontrols.TheoptimalresponseoccurredwhentheconcentrationofKGF-2was125ng/mlonday7.CellproliferationwasalsoconsistentlyhigherinallKGF-2concentrationsascomparedwiththatofthepositivecontrols.Conclusions:KGF-2hassignificanteffectsontheproliferationofadultkeratinocytes,whicharemoreeffectivethanthatofEGF.ThisstudysupportsKGF-2canimprovethehealingofchronicwoundsinadultsinclinic.

简介：Aftermorethan20years'highspeedgrowth,thesustainablegrowthofChineseeconomyfacesseriouslim-itationofresourcesandfactorsnowandinthefuture.Inordertomaintaintheeconomicgrowth,Chinahastotrans-formthewayofeconomicgrowth.Basedontheanalysisontherelatedtheoriesofeconomicgrowthandthestructur-altransformationinfactorsofproduction,thispaperproposesthatthetransformationoftheeconomicgrowthwayhastoimpeltheoptimizationandthepromotionoftheutilizationstructureoffactorsofproduction.Finally,basedontheanalysisofthenecessitytochangethepatternofeconomicgrowth,thispaperproposesthestrategicmeasurestopromotethecontinuouseconomicgrowthandthetransformationofpatternsofeconomicgrowth.

简介：假设那床材料负担等于沉积运输能力通常是可接受的，如果在床和流动之间的交换即刻地发生。为非平衡沉积运输过程，然而，有空间、时间的延期效果。这为水库沉积过程是特别真的。恢复因素是为非平衡沉积运输的一个系数。恢复因素的决心能试验性地或数字地被获得。在以前的文学的恢复因素的价值上没有一致。有半的数字模拟--二个维的沉积运输模型，GSTARS4，为以前的研究建议的恢复因素的决心用各种各样的方法在这研究被进行。一座水库的模仿的结果几何变化对恢复因素的选择敏感。恢复因素作为沉积尺寸的功能提供了最合理的结果，这被发现。在恢复因素和沉积尺寸之间的一种功能的关系被比较模仿并且测量的水库决定几何变化。粗糙的沉积有恢复因素的小价值。

简介：RodrigoRatosays“SotheAmericaneconomyneedstheworld,andtheworldneedstheAmericaneconomy”?.Forthat,itispossibletonotethattheshorthistoryofUSpolicyintheMiddleEast,includingthesuccessionofpresidential“doctrines”,fromTrumanthroughtoBushII,confirmedWashington’sappreciationofthestrategicroleoftheEasternMediterraneanandtheoilrichstatesoftheMiddleEastinthebroadercontextofUSpolicygoals.Thisinterestisduetothefactthatthisregion(MiddleEast)hasalargeofoilreservesandhugeeconomicrecourses.Thisregionholdsabout66%oftheworldoilreserves,andthisoilreservewillmaketheregiondominateforalongertimeontheglobaloilmarketandinternationaloil-producingorganizations,suchasOPEC,socontrolonthisregionhasbecomeafocusofattentiontodecision-makersintheworld,andthereisnodoubtthattheUnitedStateswasthemostprominentwhotriedtocontroltheregion.ThepurposeofthecurrentresearchistoshedlightontheUnitedStates’economicpresenceintheMiddleEastregiontounderstandhowUnitedStates’presencehasdevelopedintheregionandwhatmotiveswerebehinditspresence.

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简介：ShandongProvinceisabundantinecologicalresourcestodevelopregionalecotourism.Byusingfactoranalysismethodtoanalyzeallpossibleinfluencingfactorsonregionalecotourismindustrycompetitiveness,thisarticleassesses17sampleregions'competitivenessofecotourismindustryinShandong.Theregionalecotourismindustrycompetitivenessisdividedintotwoaspects:currentcompetitivenessandpotentialcompetitiveness.13indexesaretoanalyzecurrentcompetitivenessand7indexestoanalyzepotentialcompetitivenessrespectively.Relativesuggestionsaregivenaswell.

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简介：Objective:Toexaminetheeffectsofratmarrowstromalcells(rMSCs)ongeneexpressionoflocalbrain-derivedneurotrophicfactor(BDNF)andnervegrowthfactor(NGF)afterinjectionofrMSCsintoCisternMagnumofadultratssubjectedtotraumaticbraininjury(TBI).Results:GroupcelltransplantationhadhigherBDNFandNGFgeneexpressionsthanGroupsalinecontrolduringaperiodoflessthan3weeks(P<0.05).Conclusions:rMSCstransplantationviaCisternMagnuminratssubjectedtotraumaticbraininjurycanenhanceexpressionsoflocalbrainNGFandBDNFtoacertainextent.

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简介：Resultsofanexperimentalstudyontheeffectsofdifferentconcentrationsofwashloadonthesizeofbedfeaturesandresistancetoflowinalaboratoryflumearepresented.Theexperimentswerecarriedoutunderdifferenthydraulicconditionsina30mlong,0.204mwideand0.5mdeeptiltingflumeunderclearwaterconditionandinthepresenceofdifferentconcentrationofwashloadintheflow.Thebedmaterialusedconsistedofuniformsedimentofsize0.96mm.Analysisofthedataindicatesthatthecharacteristicsofthebedfeatureschangeandfrictionfactorincreasesinthepresenceofdifferentconcentrationofwashloadintheflow.Thereasonsforchangesinthecharacteristicsofthebedfeaturesandincreaseinfrictionfactorinthepresenceofwashloadareidentifiedandarelationshipforpredictingfrictionfactorinthepresenceofwashloadhasbeenestablished.

简介：Intheanalysisofhowenvironmentalregulationaffectsthecomparativeadvantageoftrade,existingliteratureignoresindustry’sinherentheterogeneity,whichdrawsremarkablydifferentconclusions.Inviewofthis,thepaperanalyzedthemechanismofenvironmentalregulationontheexportqualityofdifferentindustriesfromtheperspectiveoffactorinputstructureheterogeneity.BasedonthepaneldataofChina’smanufacturingindustry,thepaperusedthesystemgeneralizedmethodofmomentsmethodtoexaminetheheterogeneityinfluenceofenvironmentalregulationonmanufacturingexportquality.Thestudyfoundthat,first,environmentalregulationaffectedtheexportqualityupgradeofthemanufacturingsectorthroughoffseteffectandcompensationeffect,andthedirectionoftheimpactwouldmainlydependontheindustry’sfactorinputstructure.Second,forindustrieswithlargerfixed-assetinvestment(FAI)ratiointhefactorinputstructure,thecurrentenvironmentalregulationpolicywasnotconducivetotheexportqualityupgradingoftheindustries.However,therewasasignificantU-shapeddynamicrelationshipbetweenthem.Asenvironmentalregulationsbecamestricter,whenregulatorystringencywentbeyondtheinflectionpoint,thepolicywouldpromotetheupgradingofexportquality.ButforindustrieswithsmallerproportionofFAI,environmentalregulationexertedafavorableimpactontheexportqualityupgrade,followingaJ-shapedmarginalgrowthcurve.Third,forindustrieswithdifferentfactorinputstructure,theirexportqualityhadbeeneffectivelyupgradedasexpectedbyfactorslikehumancapitalinvestment,independentR&D,technologyintroduction,andforeigndirectinvestment;butraisingpercapitacapitalstockandexpandingenterprisesizedidnotproducesignificantdirectimpactonexportqualityupgrade.Theseconclusionsremainedrobustafterusingdifferentmeasurementmethodsandreplacingwithothervariables.Therefore,thispapersuggeststhatgovernmentsshouldt

简介：在CDQ(科克干燥熄灭)柄，有复杂结构的发泄帽子在冷却室下面在锥形的漏斗被安装。它行动介绍冷却气体并且在房间支持下降焦炭。设计和发泄帽子目的安装，到得到相对一致的煤气的分发在插头减少焦炭的温度变化并且认识到CDQ的稳定的操作仪器。在这篇论文，在1:7规模CDQ试验性的柄的发泄帽子的气体的狂暴的流动被使用CFD(计算液体动力学)数字地模仿软件，CFX。速度地，插头流动分发和在三种发泄帽子(叫的高发泄帽子，低发泄帽子和椭圆形的发泄帽子)下面的每个插头的压力落下因素被分析并且比较。结果生产椭圆形的发泄帽子的压力落下因素比另外的二发泄帽子大，并且高发泄帽子和低发泄帽子的压力落下因素几乎有一样的价值。当时为一顶指定发泄帽子，没有压，有压砖的压力落下因素比那大砖。在这篇论文的工作为为大规模CDQ柄设计发泄帽子是珍贵的。

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简介：Fromtheperspectiveoftourismcompetitiveness,thepapertakes12islandcountiesofChinaastheresearchobject,andappliesthemethodoffactoranalysistostudytheircompetitiveness.TheresultshowsthatPutuoandDinghaiaremorecompetitivewhilePingtanandNan’aoarelesscompetitive.Finally,the12islandcountiesaredividedintofourstyles:first-classcompetitivecounty(Putuo),seond-classcompetitivecounties(Dinghai,Yuhuan),third-classcompetitivecounties(Chongming,Daishan,Changdao,ChanghaiandShengsi),fourth-classcompetitivecounties(Dongshan,Dongtou,PingtanandNan’ao)byclusteranalysis.Theclassificationofislandcountiesistocleartheirrelativeposition,thentopromotetheirdevelopment.

简介：在这份报纸，三存在来源光谱为地面运动的随机的有限差错的建模的模型被考察。这三个模型被用来从一个垂直差错和平均数在一个地点计算远地的收到的精力光谱在Northridge地震的15个车站上的比率，然后比较。从比较，一项必要措施被观察维持subfault尺寸的远地的收到的精力独立人士并且避免overestimation长时期光谱水平。二改进被做到三个模型之一(即，模型基于动态角落频率)如下：(i)计算subfault角落频率的一个新方法被建议，在subfault角落频率基于从取决于的全部差错和增长的全部的地震时刻计算的基本价值是坚定的的地方，地震时刻分到subfault；并且(ii)从每subfault的放射精力的差别被考虑进可伸缩的因素。改进模型也与通过远地的收到的精力和平均数的未耕过的模型相比光谱比率。比较证明改进模型允许收到的精力比未耕过的模型更独立于subfault尺寸，并且减少overestimation度长时期光谱振幅。

简介：One-dimensionalringpowersystemisdiscreditedtoanumberofnodeseachcontainingageneratorwithinternalreactanceandloadbranchofresistanceandreactancewithacertainpowerfactor.Whenadisturbanceoccursatanymachineinthepowersystem,simulativeanalysisisperformedtoverifyhowthevariationofloadpowerfactoraffectingthebehaviorofelectromechanicalwavepropagationbyusingtheMATLABpackage,fromwhichdifferentsituationsarepresentedanddiscussed.Theseresultsshowthetypeofloadhasnoeffectonthebehaviorofelectromechanicalwavepropagation.

简介：ＭＯＤＩＦＩＥＤＩＮＴＥＧＲＡＬ－ＦＡＣＴＯＲＭＥＴＨＯＤＦＯＲＳＴＥＡＤＹＣＯＮＶＥＣＴＩＯＮ－ＤＩＦＦＵＳＩＯＮＥＱＵＡＴＩＯＮＳＸｉｎＸｉａｏ－ｈａｎｇ；ＷａｎｇＨａｏ；ＨｕｏＹｉ（ＤｅｐａｒｔｍｅｎｔｏｆＡｐｐｌｉｅｄＭｅｃｈａｎｉｃｓ，Ｆｕ...

简介：AbstractInthisarticlewebrieflystudiedthefictitiousdomainmethodsforsteadyandnonsteadyNavier-StokesequationsbasedonPenaltyfactorεontheextendeddomain.Theconvergenceu?→uinH01（Ω）dandL2（Ω）d（d=2,3）isgivenaswellasp?→pinL02（Ω）.