简介:Spreadoffiresmokeintheelevatorshaftofahigh-risebuildingisinfluencedbymanydrivingfacts.Wesimulatesmokespreadingintheelevatorshaft,stairroom,andpre-chamberwithandwithoutdifferentsuppliedpressurizedair.Thesimulationshowsthatsmokemovesveryfastintheelevatorshaft.Whena12floorhigh-risebuildingisinfire,smokecanfilluptheelevatorshaftinlessthan1.5minafterafirestarted,temperatureintheelevatorshaftcanbehigherthan187?Cin5min,andtheconcentrationofCOcanalsoreachahighlevel.Theelevatorshafthasaverylowvisibilityinlessthanabout100s.
简介:Inthisresearch,thevibrationofelevatorropes,includingthemainropeandcompensationropeareinvestigatedsimultaneouslyinahigh-riseelevatorsystemunderearthquakeexcitation.Moreover,thepaperpresentsanewcontrolmethodtorestraintheswayofbothropes.Thisstudyconsidersvaryingropelengthsduringelevatoroperationwhichcauseothersystemparameterssuchasnaturalfrequency,anddampingratiotobetime-variantvariables.Thedynamicsoftheropesareanalyzedbysolvingthegoverningnon-stationary,nonlinearequationnumerically.Inordertomitigatethevibrationofropesinseveralmotionconditions,particularlyupwardsmovement,downwardmovement,stoppedatthelowestposition,andstoppedatthehighestposition,anactiveequipmentisinstalledatthecompensationsheave.Thestabilityofthesystemusingthecontrollerisanalyzedatfourstates:withoutdisturbanceandstaticcar,withoutdisturbanceandmobilecar,includingdisturbanceandstaticcar,andincludingdisturbanceandmobilecar.Theefficiencyofthecontrollerusedfordampeningthevibrationofelevatorropesisvalidatedbynumericalsimulationresults.
简介:Objective:Tostudytheoccurrenceanddevelopmentofprimarysyphilisfromamorphologicalandstructuralaspect.Results:Thepathologicalchangesofsyphiliticchancreoccurmainlyinthedermallayer,manifestedaspartialthinningorlysisofthecapillarybasalmembrane,proliferationofcapillaryendothelialcells,thickeningofsomecollagenfibersandruptureofcollagenfiberssurroundingT.pallidum,structuraldisruptionoftheaxonsofterminalnerves,disarrangementofthesheathofthemyelinatednervefiberswithseparationoflaminaeandtheattachmentofT.pallidumonitsoutermembrane,appearanceofslightlyswollenT.pallidumintheplasmaofthecapillaryendothelialcellsandfibroblasts,andinfiltrationofneutrophils,macrophagesandplasmacellscontainingT.pallidumanditsdebrisfrequentlylinedbyaclearsheath.Conclusion:Thepathogenesisandinjuryofmechanisminprimarysyphiliscanbeexplainedmorphologicallybyitscharacteristicultrastructuralpathologicalchanges.
简介:ThispapersummarizesthebasicsituationoftheBinchuanTransmittingSeismicStationandthegeophysicalobservationsoftheareawhereitislocated,withafocusontheconstitutionoftheobservationsystemofthetransmittingseismicstation,theexcitationcharacteristicsandpropagationdistanceofsignalsexcitedbytheairgunsourceinthereservoirandwell.ThepaperalsosummarizesanddiscussesontheresultsoftheobservationsandproblemsencounteredsincetheTransmittingSeismicStationwasbuilt.Finally,thispaperproposesthemainresearchtobecarriedoutonthebasisoftheprojectaims.
简介:Statusasthmaticusisaformofbronchialasthmaattack.Thesevereonecancausefailureofrespiratoryfunction.Toalleviatethesymptomsquickly,routinetherapycouldcombinedwithcompoundsalviamiltrorrhizainjectionandvitaminK3.Comparedthe36patientsintwogroupsandfoundtheeffectswereobvious.Intravenousdripwithcompoundsalviamihiorrhizainjectioncandilatethevessel,improvethemicrocirculationandpulmonarycirculation,correctoxygendeficitandquickelydispelsputum,thusit'sconductivetotheeliminationofconvulsionofairway.VitaminK3canpromotethesynthesisandconversionofcyclicAMPandalleviatetheinflammatoryexudation,thusimproveandstrengthenthefunctionofventiliation.
简介:Objective:Toexploretheeffectofmorphologicalchangesinthedevelopmentofcondylomaacuminatum(CA)MaterialsandMethods:LesionsinfivepatientswithCAwereobserved.Results:Uponelectronmicroscopy,themostcharacteristicfeatureofthelesionsimportantfordiagnosis,wasthepresenceofdistinctperinuclearvacuolizations,orso-calledkoilocytes,amongsomeepithelialcells.Thesecellspossessedhyperchromaticnuclei,swollenmitochondria,dilatedendoplasmicreticulumanddissolvedglycogen.Therewereinterchromatingranulesandperichromatingranulesinsomenuclei.Moreoversomevirusparticleswerealsoseeninthenucleiofsomeinfectedcells.Conclusions:Theultrastructuralfindingsmaybeusedtohistopathologicallyexplainthepathogenesisandmechanismofthisdisease,anditishelpfulfordiagnosisofCA.
简介:Inthepresentpaper,theauthorreportstheresultsofacupunctureofHouding(GV19)andotheracupointsselectedalongthemeridianfortreatingsciatica.Atotalof92sciaticapatientswererandomlydividedintoHoudinggroup(n=62)andcontrolgroup(n=30).InHoudinggroup,patientsweretreatedmainlywithpuncturingHouding(GV19),combinedwithHuantiao(GB30)whennecessary.Incontrolgroup,patientsweretreatedwithHuantiao(GB30),Yanglingquan(GB34)orZhibian(BL54),Weizhong(BL40),Chengshan(BL57),Kunlun(BL60),etc.whichwereselectedalongtherouteofmeridian.Resultsindicatedthatfollowing10sessionsoftreatment,inHouingandcontrolgroups,ofthe62and30cases,44and15werebasicallycured,18and10wereimproved,0and5failedinthetreatment,withthetotaleffectiveratesbeing100%and83,3%respectively.ThetherapeuticeffectofHouding(GV19)issignificantlysuperiortothatofacupointsselectedalongthemeridian.
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简介:TheensemblebasedforecastsensitivitytoobservationmethodbyLiuandKalnayisappliedtotheSPEEDY-LETKFsystemtoestimatetheobservationimpactofthreetypesofsimulatedobservations.Theestimationresultsshowthatalltypesofobservationshavepositiveimpactonshort-rangeforecast.ThelargestimpactinNorthernHemisphereisproducedbyrawinsondes,followedbysatelliteretrievedprofilesandclouddriftwinddata,whichinSouthernHemisphereisproducedbysatelliteretrievedprofiles,rawinsondesandclouddriftwinddata.SatelliteretrievedprofilesinfluencemoreontheSouthernHemispherethanontheNorthernHemisphereduetofewobservationsfromrawinsondesintheSouthernHemisphere.Atthelevelof200to300hPa,thelargestimpactisattributedtowindobservationsfromrawinsondesandclouddriftwind.