简介:<正>Regularlyplayingsportsorexercisingisbecominganimportantpartofahealthylifestyle.Asthepopulationplayingsportsandexercisingisincreasing,incidentsofsportsinjuriesarealsoincreasing.Sportsinjuriesresultindevastatingphysical,psychological,andfinancialconsequencesandsignificantlyimpactthelevelofactivityandqualityoflifeofpatients,whichhavenotbeenfullyrecognizedbyoursociety.Preventingsportsinjuriesandimprovingrehabilitationof
简介:Objective:Tosummarizethereconstructionexperienceoftheelectricalinjuriesinemergency.Methods:All309woundsin105patientswhosufferedfromelectricalinjurieswerereviewedduringa10yearperiodfromJan.1st1986toDec.31st,1996.Treatmentmethod,patientdataandresultswerecomparedandanalyzed.Acomprehensiveurgentreconstructionalternativeusedinallcasesincludedthefollowings,1)debridingthewoundinemergency,2)preservingthevitaltissuesasmuchaspossible,evendevitalizedtissuesorlocalnecrosis,3)transplantingthesevitaltissuesduringthefirstsurgeryifthefunctionalreconstructionrequired,4)nourishingthewoundbedbytissueflapscoveringwithrichbloodsupply,5)improvingflapsurvivalbycontinuousirrigationfor24-720hoursbeneaththeflapswithacompoundmedicineaftersurgery.Results:Satisfactoryresultswereobtainedwiththeextremitylossratiooflessthan7%inthisgroupcomparedwith42.5%whichwas10yearsbefore1984inthesamehospital.Conclusions:Thisurgentcomprehensivereconstructionalternativeisaneffectiveandworkablemethodforreducingextremitylossofelectricalinjuries.
简介:Objective:Toassessthetherapeuticeffectofulinastatinonseverecraniocerebralinjuriesandtoexploreitsmechanism.Methods:Therewere87casesofseverebraininjuryinthisseriesandtheywereeithertreatedbyulinastatin(treatmentgroup,41cases)ornot(controlgroup,46cases)besidesroutinemanagements.WeestimatedC-reactiveprotein,interleukin-6,superoxidedismutase,andendothelinfromplasmasofallthecasesonthe1st,3rd,5th,and7thdayafterinjury.Results:C-reactiveproteinlevelroseonthe1stand3rddayafterinjuryinthetwogroups,butdescendedintreatmentgrouponthe5thand7thdayandwassignificantlylowerthanthatincontrolgroup(P<0.01).Nosignificantdifferencewasfoundforinterleukin-6intwogroupsduring1-5daysafterinjury,butonthe7thday,itdecreasedsignificantlyintreatmentgroupthancontrolone(P<0.01).Superoxidedismutasewashigherintreatmentgroupthancontrolonein5-7daysafterinjury(P<0.01).Endothelinelevatedonthe1stdayafterinjurybutdroppedafterwardsinthetwogroups,inwhichthelevelintreatmentgroupwaslowerthanthatincontrolone.Theincidenceofgastrointestinalhemorrhagewaslowerintreatmentgroupthancontrolone(P<0.01).Conclusions:Ulinastatinhasthefunctionofprotectingcerebraltissue,reducingtheincidenceofgastrointestinalhemorrhage,improvinghepaticandrenalfunctionandprognosis.
简介:Theblastfurnaceistheoldestmetallurgicalprocessincommercialuse.Ithasgonethroughgreatimprovementsduringthelastdecadesandnewimportantmodificationsarestillforeseen.Thehugeamountofcoalandcokeneededforreductionofironoreisresultinginemissionsofcarbondioxidethathavetobestronglyreducedtomeettherequirementofminimizingthecarbonfootprint.Allresidualsfromiron-andsteelmakingalsoneedtobetakencareoftomeettherequirementofzerowaste.ThispaperdealswithseveralpotentialimprovementsoftheblastfurnaceprocessbeingdevelopedintheLKABExperimentalBlastFurnaceinLulea,Swedenoverthelastdecade,includingoperationatultralowslagvolume,injectionofBFfluedust,injectionofBOFslag,andtheoxygenblastfurnace.
简介:Low-creepandalusitebricksarecharacterizedbyhighrefractorinessunderload,goodanti-creepproperty,highmechanicalstrength,lowporosity,goodthermalshockresistance,etc.Inthisstudy,low-creepandalusitebrickspecimenswereinvestigatedinthelabusingmullite,bauxiteandandalusite.Andalusitewiththedifferentparticlesizeswereusedintheexperimentandthespecimenwiththebestpropertywasselectedastheproductionstandard.Inaddition,theindustrialproducedlow-creepandalusitebrickswerecomparedwithotherlow-creepbricks.Theresultsshowthatthedevelopedlow-creepandalusitebricksisanexcellentmaterialforhotblaststove.
简介:YB/T5107-20041ScopeThisstandardspecifiestheclassification,shape,dimension,technicalrequirements,testmethod,inspectionrules,packing,marking,transportation,storageandqualitycertificationoffireclayrefractorybricksforhotblaststove.Thisstandardisapplicabletothenormalfireclayrefractorybricksandlowcreepfireclayrefractorybricksforhotblaststove.
简介:TheapplicationstateofanhydroustapholeclayinChinaandoverseaswasintroduced.Thecharactersandrequirementsofstartingmaterialsofanhydroustapholeclayforblastfurnace,andtheformulationandpropertiesofanhydroustapholeclayinsomeplantswerementioned.Theenvironmentproblemsofanhydroustapholeclaywerediscussedandthedevelopingtrendwaspointedout.
简介:Objective:Toevaluatethetreatmentforpatientswithmajorvascularinjuriesassociatedwithtraumaticorthopedicinjuries.Methods:Atotalof196patients,agedfrom4-67yearswiththemeanageof29.88years,hadmajorvascularinjuriesassociatedwithtraumaticorthopedicinjuriesandweretreatedinourhospitalinaperiodof44years.Themostcommonmechanismoftraumawasblunttrauma(67.3%),openinjuriesaccountedfor32.4%and54.5%oftheinjurieswerelocatedinthelowerextremities.Thevascularinjuryfrequentlyhappenedinthefemoralartery(26.7%)andpoplitealartery(20.3%).Thetreatmentprincipleconsistedofaggressiveresuscitation,Dopplerimagingandstableboneinternalfixationwithsubsequentvascularrepairanddebridement.Thevascularrepairforinjuriesincludedend-to-endanastomosis(80cases,39.6%),interpositionalveingraft(94,46.5%),vasculardecompressionthroughfracturedistraction(18,8.9%),arterialligation(6,3.0%),veinpatch(2,1.0%),bypassgraft(2,1.0%),venousrepairincludingautogenousveingraft(9,24.3%)andligation(28,75.7%)andprophylacticalfasciotomy(15,7.4%).Postoperativeamputationwasperformedin16cases(16.3%).Results:Nointraoperativedeathwasobservedandallfracturesunitedwithin6months.Limbsweresalvagedin180patients(91.8%).Amongthesepatients,earlycomplicationswerefoundin19patients(9.7%)andlatecomplicationswereobservedin8patients(4.1%).Conclusions:Awell-organizedapproach,basedonaspecifictreatmentprinciple,notonlyimprovesclinicaloutcomebutalsodoesgoodtoexcellentfunctionalrecoveryforpatientswithsevereorthopedicinjuriesandconcomitantvascularlesion.
简介:肌肉损害在运动仍然是最普通的损害之一,还尽管有这,几乎没有怎么有效地描述或决定特定的肌肉损害的预后到也上的很少一致。肌肉分类的众多的途径并且药分级在最后世纪被使用了,但是在最后十年,历史性的途径的限制被认出了。作为后果,在过去的10年里,临床的研究组开始询问了历史性的途径并且重新考虑肌肉损害被分类并且描述的方法。用一条记事途径,这张手稿描述几次最近的尝试分类并且分级肌肉损害并且加亮每个系统的相对力量和软弱。当时每新分类和分级的系统有力量,几乎在那里不在全面的一个系统和基于的证据上仍然是很少一致。很少在分级的系统以内的当前识别的特征有关联到精确地决定预后。
简介:AftertheprogressivecollapseofRonanPointapartmentinUKin1968,intensiveresearchefforthadbeenspentondevelopingguidelinesfordesignofneworstrengtheningtheexistingstructurestopreventprogressivecollapse.However,onlyveryfewbuildingdesigncodesprovidesomerathergeneralguidance,nodetaileddesignrequirementisgiven.ProgressivecollapseoftheAlfredP.MurrahFederalbuildinginOklahomaCityandtheWorldTradeCentre(WTC)sparkedagaintremendousresearchinterestonprogressivecollapseofstructures.Recently,USDepartmentofDefence(DoD)andUSGeneralServiceAdministration(GSA)issuedguidelinesforstructureprogressivecollapseanalysis.Thesetwoguidelinesaremostcommonlyused,buttheiraccuracyisnotknown.Thispaperpresentsnumericalanalysisofprogressivecollapseofanexampleframestructuretoblastloads.TheDoDandGSAproceduresarealsousedtoanalysethesameexamplestructure.Numericalresultsarecomparedanddiscussed.Theaccuracyandtheapplicabilityofthetwodesignguidelinesareevaluated.
简介:TheproblemofshortlifehearthofblastfurnacewassolvedthroughtheadoptionoflonglifetechnologiessuchastheapplicationofUCARhotpressedcarbonbrick-ceramiccupcompoundliningtechnology,closed-loopsoftwatercoolingsystem,enhancingtapholemaintenanceandschreyeriteliningprotectionetc.Longlifeandhighproductivityhadbeenachievedsuccessfully.ThetransitionoftechnologicalprocessesofthehearthforblastfurnacesatBenGangareoutlinedinthispaper.