简介:Thelocalpressuredistributionsandresistancecoefficients(f1andf2)throughthesharp180degturninarelativelyshort(L/De=4)two-passsmoothandrib-roughenedchannelwereinvestigatedforaReynoldsnumberrangeof1.0×10^3,9.0×10^3.Theribpitch-to-herghtratios(p/e)were5,10,and20,Theribheight-to-hydraulicdiamterratios(e/De)were0.025,0.050and0.10,andtheribanglesofattack(a)were90,45,60,-45,and-60deg.Ridswereinstallednotonlyinbeforeandafterturnregionsbutalsointurnregion.TheresultsshowthatresistancecoefficientsremainapproximatelyconstantwhenReynoldsnumberismorethan3.0×10^4,Theeffectsoftheribconfiguration(ribspacing,ribheight,andriborientation)ontheinletstraightductresistancecoefficient(f2)weresignificant,however,theireffectsontheoverallresistancecoefficient(f1)weredilutedbythesharp-180turn.Forthisrelativelyshortchannel(L/De=4),theoverallresistancecoefficient(f1)wasgreatlyaffectedbythesharpturn.Correlationsfortheoverallresistance(f1)andinletstraightductresistancecoefficient(f2)arepresented.
简介:Nitricoxidehasplayedanimportantroleinmanyphysiologicalandpathologicalprocessesasakindofimportantgassignalmolecules.Inthiswork,anewfluorescentprobeLysoNO-NaphfordetectingNOinlysosomesbasedon1,8-naphthalimidewasreported.LysoNO-Naphhassub-groupsofo-phenylenediamineasaNOreactionsiteand4-(2-aminoethyl)-morpholineasalysosome-targetablegroup.Thisprobeexhibitedgoodselectivityandhighsensitivity(4.57mmol/L)towardNOinawidepHrangefrom4to12.Furthermore,LysoNO-NaphcanbeusedforimagingNOinlysosomesinlivingcells.
简介:Inthepresentstudy,weinvestigatedtheeffectofceriumanderbiumdopingofthezirconiumdioxidematrix.Wesynthesizeddopedsamplesusinghydrothermalprocess.Theamountsofdopantusedwere0.5%,1%and5%molar(rareearthoxideoverzirconiumdioxide)respectively.ThesampleshavebeenstudiedviaX-rayDiffractionmeasurementsforthestructuralcharacterization.UVvisiblediffusereflectancewasusedfortheopticalanalysis,Brunauer-Emmett-Teller(BET)modelforthemeasurementofthesurfacearea.Finallythesampleshavebeenanalysedviaelectronparamagneticresonance(EPR)fortheelectroniccharacterization.Thenwetestedthenewsynthetizedmaterialstodeterminetheirphotocatalyticactivityinthereactionofdegradationofmethyleneblueperformedunderirradiationbydiodes(LEDs)emittingexclusivelyvisiblelight.
简介:Theequilibriumfittingcode(EFIT)anditsapplicationintheJ-TEXTtokamakareintegratedbytheMatlablanguage.Thefunctionofanalysisandvisualizationtotheresultsisadded.Inaddition,theexperimentdatameasuredbysoftX-ray(SXR)areusedtocalculateplasmaequilibriumasaconstraintcondition.TheimprovedEFITcodeisusedforJ-TEXTdischargeandtheprofilesofplasmaparameterssuchasfluxfunction,safetyfactorq,pressureandcurrentdensityareobtainedfromthereconstructedconfigurations.
简介:J21《伟大的领袖和导师毛泽东主席逝世一周年》第四枚邮票的名称是《毛主席在雄伟的天安门上向全世界庄严宣告中华人民共和国成立》,新版《中国集邮百科知识》(耿守忠、杨治梅编著华夏出版社出版),在介绍这枚邮票时也说:“毛泽东同志……代表中国人民以震撼全世界的声音,庄严地宣告了中华人民共和国的诞生。”
简介:ErnstJüngerwird100JahrealtAm29.Marz1995begehtderinHeidelberggeboreneSchriftstellerErnstJungerseinen100.Geburtstag.Schonmit18J...