简介：急性心肌梗塞(AMI)是内科常见急症,发病后1～2小时死亡者很多,据统计资料约半数于入院前死亡。从发病至入院过程来看,患者从感到胸痛至决定呼叫救护车加上医生诊断为AMI,送至病房或CCU(心电监护),

简介：Byanalyzingthethermalandburdenstructureconditionsinsidethemelter-gasifierofCOREXprocess,theadvantageanddisadvantageofPCIintothemelter-gasifierareclarified.TheinfluenceofPCIontherunningconditioninsidethefurnaceisanalyzedbasedontheinformationfromproductionoperationandmathematicalandphysicalsimulations,andmeasurestotacklewiththeproblemsarisingfromPCIareproposed.Themainresultsareasfollows.①Duetotheunfavorableconditionsforcokingofcoalinthemelter-gasifier,cokingofchargedlumpycoaltogetsemicokewithgoodsizeandstrengthcanhardlybeexpected.Tomaintainthepermeabilityoftheburdencolumn,apackedbedsimilartoblastfurnaceisnecessary.Therefore,alittlemorecokewithPCIinplaceofmostofthelumpycoalmayimprovetherunningofthereactor.Thiscanalsomakethelumpycoalselectioneasier.②Overallheatbalanceanalysisofthemelter-gasifiershowsthatPCIhasnoeffectonthethermalconditionofthefurnaceasawhole.Localheatbalanceanalysis,however,showsthattheheathofthemelter-gasifierisinacriticalstateoflowheatsupply.PCIintothehearthwilldeterioratethethermalcondition.ToavoidthecoolingofthehearthzonebyPCI,moreoxygencanbeblowntothehearthzone,i.e.increasetheoxygensupplytothehearthanddecreaseaccordinglytheoxygensupplytothefreeboard.Moreoxygensupplytothehearthseemstobringouttheissueofanincreaseinfuelrateand/ortherebythesmeltingintensity.DetailedanalysisofthephysicalchemicalprocessesconcludedthatPCIwithmorecorrespondingoxygensupplywillnotleadtotheincreaseoffuelrate.③Comparingwithblastfurnace,theracewayvolumeofCOREXmelter-gasifierisaboutonly1/10～1/5ofthatofcorresponding-sizeblastfurnace.ThissmallracewayisnotfavorableforPCI.ToenlargetheracewaytogetmorefavorableconditionforPCI,lesstuyereswithmoreoxygensupplyofeachtuyereisproposed.④Comparingwithlumpycoalfeedingintot

简介：PresentlytheironandsteelmakersarecompelledtoincorporaterationalinitiativestoreduceitsprocessingCO2totalemissions.Inthemediumandlongterm,theinjectionofsmallparticlesofbiocharthroughthetuyereesinblastfurnaces,herecalledBio-PCI,offersattractivefeaturesfromtheenvironmentalandmetallurgicalpointofview,asitisarenewablecarbonneutralreductantandpresentslesserimpuritiesthancoke.However,itsutilizationinironplantsisbeenhinderedbythetraditionallargeavailabilityofrelativelyeconomicalcoalandcoke.Asthecostoftheprincipalprocessinginputsincreases（coal,cokeandironore）thegapbetweenfossilandrenewablereductantsdecreases.Inthissense,ourcontributionaimstocomplementthemetallurgicalinquiryoftechnicalfeasibilitywithastrategicidentificationoftheareaswithbestprospectstobenefitsfromtheincorporationofBio-PCI:wherecanitflourish?.Ouranalysisleadstoindicatethatemergingcountriesinspecific,China,BrazilandIndia,areinaprimepositiontoincorporatetheBio-PCIastheysimultaneouslycomplywithagrowingironindustrybasedonblastfurnaces,andpossessanimportantpotentialforenergygenerationfromforestryresidues.

简介：自1990年以来。日本各钢铁公司的大型高炉都实施了喷煤操作。在20世纪90年代，随着喷煤装置的增加和喷煤量的提高，焦比降到了350-400kg／t。自2000年以来，随着利用系数的提高。喷煤比反而星下降的趋势。

简介：达涅利康力斯得到一份订货合同，将向涟源铜铁公司(LISCO)提供一套PCI喷煤系统，其中包括喷煤系统设计、供货和技术服务。这套新的喷煤系统将为涟源正在建设的6号新高炉啧吹煤粉。PCI喷煤系统最大喷煤量可达250kg／t铁水，以确保高炉能够有效利用喷入炉内的煤粉。该系统将在2004年建成试车。设备供货仅限于关键设备，

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简介：选择可疑为急性胰腺炎患者50例,其中临床确诊有39例,分别用比浊法、碘-淀粉酶比色法进行血清脂肪酶、淀粉酶二种方法联合检测,结果39例患者中,脂肪酶和淀粉酶阳性率分别为92.3%、69.2%。观察39例确诊病例,8h内抽血检测脂肪酶、淀粉酶,二者都升高;12-24h内,血清淀粉酶达高峰,是参考值的3倍,脂肪酶继续升高;48h后,淀粉酶开始下降,脂肪酶达高峰,大于参考值3倍以上;第3天,淀粉酶降至正常,脂肪酶仍高于正常值上限;第6、8天,淀粉酶雏持正常水平,脂肪酶开始下降,但仍高于正常值上限;第10天后,脂肪酶降至正常。揭示急性胰腺炎时,血清淀粉酶增高时间较短,易漏诊,脂肪酶升高可持续10天,对诊断急性胰腺炎有较高特异性,将脂肪酶、淀粉酶二者联合检测有助于急性胰腺炎的诊断和预后的判断。

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简介：周围性面瘫属中医"口眼歪斜"范畴,是多发的常见病,如不及时治疗,牵延日久,往往难以治愈。笔者自1990年以来采用针刺配合中药治疗本病,取得显著疗效,现将治疗结果报告如下。

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简介：日前美国一项研究报告说,日本研究人员发现了代号为CD96的蛋白,可作为识别导致最常见的成人急性白血病的恶性干细胞活动的标志,从而在寻求根治白血病的方法上迈出关键一步。报告说,急性成髓细胞性白血病(AML)是血液和骨髓的癌症,因单独使用药物常常无

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简介：对复方丹参滴丸治疗冠心心绞痛患者28例进行疗效观察，并与复方丹参片进行对照，疗程为4周，结果表明：心绞痛总有效率为96．43％，对照为66．67％；快速止痛总有效率89．29％，组无显效作用，经统计学处理P均＜0．05。

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