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  • 简介:ThetranswellchambermigrationassayandCCDdigitalcameraimagingtechniqueswereusedtoinvestigatetherelationshipbetweenregulatoryvolumedecrease(RVD)andcellmigrationinnasopharyngealcarcinomacells(CNE-2Zcells).Bothmigratedandnon-migratedCNE-2Zcells,whenswollenby47%hypotonicsolution,exhibitedRVDwhichwasinhibitedbyextracellularapplicationofchloridechannelblockersadenosine5'-triphosphate(ATP),5-nitro-2-(3-phenylpropylamino)benzoicacid(NPPB)andtamoxifen.However,RVDrateinmigratedCNE-2Zcellswasbiggerthanthatofnon-migratedcellsandthesensitivityofmigratedcellstoNPPBandtamoxifenwashigherthanthatofnonmigratedcells.ATP,NPPBandtamoxifenalsoinhibitedmigrationofCNE-2Zcells.TheinhibitionofmigrationwaspositivelycorrelatedtotheblockageofRVD,withacorrelationcoefficient(r)=0.99,suggestingafunctionalrelationshipbetweenRVDandcellmigration.WeconcludethatRVDisinvolvedincellmigrationandRVDmayplayanimportantroleinmigratoryprocessinCNE-2Zcells.

  • 标签: 鼻咽癌 肿瘤细胞 氯化物通道阻断剂 细胞容积 细胞迁移
  • 简介:Ashocktubeisusedtoinvestigatethebubbledynamicsundersuddendecreaseofambientpressure.Boththeoscillatingandmonotonouslygrowingbubblesweresimultaneouslyobserved.TheoreticalapproachisbasedontheRayleigh-PlessetandHerring'sequationsforincompressibleandcompressibleliquids,respectively.Consideringthelinearapproximationoftheseequationsforthequasiequilibriumstate,twocriticalWebernumbersaredefined.Theyenableonetopredictthefollowingmodesofthebubbleexpansion:(i)unboundedgrowth,(ii)asymptoticgrowthtolimitedvolumeand(iii)attenuatedoscillations,dependingonthepressureforce,viscosityandcompressibilityoftheliquid.

  • 标签: 粘滞可压缩液体 液泡 压强
  • 简介:DuringJuneandJuly2003,JingmenPetrochemicalCompanycardedoutthecommercialtestontechnologyforhigh-temperaturecrackingofC5fractiontodecreaseolefincontentofgasolineinDCCU.ThetestresultsshowedthattheolefincontentofDCCgasolinehaddecreasedfrom68.32m%to42.5m%,meanwhilethepropyleneyieldincreasedby0.90m%.

  • 标签: 石蜡 汽油 裂解炉 C5 DCCU 化学实验