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简介：在漫长的人生旅途中，我们难免会遇到许多困难与不如意，但切不可迷失方向，丢失了人格与生活的希望，在通佳成功的道路上，在通往未来生活的旅途中，惟善心可依!

简介：Thesteelindustryhascomealongwayinincreasingitsenergyefficiency.InEuropethecarbonintensityofsteelmakingoverthelast40yearswasdecreasedbyafactor2.Thepotentialforfurtherimprovementsisnowbecominglessobviousasblastfurnaceoperationsareapproachingthethermodynamicallowerlimitofhotmetalproduction.Totakeontheclimatechangechallengeandbeabletorespondtotheexpectationforstrongreductionofcarbonemissions,ArcelorMittal（AM）hasdevelopedatwostepapproach:（1）Inafirstinstancegiventhemodestremainingpotentialforincrementalimprovementsprecisebenchmarktoolsweredeveloped.Thisallowedidentifyingthetoprunnersanddeterminingtheremainingpotentialforimprovement.Plansweredevelopedtobridgethegapwiththisachievableperformance.Intotalaplanwasdevisedwithmorethan400identifiedactionsthroughoutthegroup.Thisactionplanwillallowachievingafurther8%increaseofCO2efficiencyby2020.（2）Secondly,alreadyin2002AMengagedinthedevelopmentofbreakthroughtechnologiestofurtherdrasticallyreducethecarbonintensityofsteelmaking.Afterscreeningalargenumberofcandidatesafewwereselectedforfurtherdevelopment.Afirstbreakthroughtechnologywhichisthemostadvancedstageofdevelopmentcanbeappliedtoexistingblastfurnaceandisreachingmaturityandademonstrationonindustrialscaleofthistechnologyisunderpreparation.Initselfthistechnologywilldecreasethedependencyoncarbonaswellasincreasetheproductivityoftheoriginalblastfurnaces.Realbiggainscanbemadeifthistechnologycanbecombinedwithundergroundcarbonstorage.IntheAMroadmaptheimpactofrawmaterials（DRI,scrap）wasexcluded.Inthelongerrunhowevertheattentionwillhavetoturntotheoverallfootprintofmaterialsandthelongtermconsequencesofthechoiceofmaterials.Increasingtherecoverywhilepreservingthequalityofusedsteelproductswillleveragegreatlytheeffortsdonein

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简介：Anexperimetalinvestigationwascarriedoutontheeffectofbladechordwiseleanonthelosseinhighlyloadedrectangularturbinecascades,Datailedmeasurementsinclude10traversesfromupstreamtodownstreamofthecascadeswithfive-holesphericalprobes.ComparedwiththeexperimentaldataofthecoventionalStraightandpitchwiseleanbladesunderthesameconditions,itisshownthattheeffectofchordwiseleanonthedevelopmentofthecascadelossesissimilartothatofpitchwiselean.However,thechordwiseleanproducessmallerstreamwiseadversepressuregradientsnearbothendwallsandasmallerspanwisenegativeonestartingfromtheactuteanglesideinthefirstpartofthepassagesinchordwiseleancascade,therebythesaddlepointseparationsandintensitiesofthepassagevorticesareweakenedandthesecondaryvortelossesarecutdownnotably.

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简介：TheAODisbyitsverynatureandpurposealargegeneratorofCO2.ThetotalCO2emissionfromtheprocesscanbedividedintotwoparts-thedirectpartwhichisproportionaltothecarbonremovalfromthemetalandtheindirectpartwhichisrelatedtotheconsumptionofadditivessuchasreductionagents,slagformersandalloys.TheproductionoftheadditivestypicallyrequiredforaheatcauseslargeemissionsofCO2,infact,oftenlargerthanwhatisgeneratedfromthedirectpart.Byapplyingareal-timeadaptiveoptimizationoftheoxygentoinertgasratiooversmalltimeincrements,theoverallcarbonremovalefficiencyisincreasedwhiletheconsumptionofreductionagentsandslagformersaredecreased.ThisremovesunnecessaryproductioncostsandminimizesthetotalemissionofCO2.Inthispaperaprocessconceptwithoptimizedgasadministrationoveralargenumberoftimeincrementsiscomparedwithamoretraditionalprocesspractice.TheworkisbasedonindustriallyprovenprocessmodelsintegratedintheUTCASsoftwarepackageforconvertermanagementandcontrol.Finally,thispaperconcludesonhowthesuggestedprocesscanbeappliedinactualplantoperation.

简介：Purpose:Theaimofthisstudywastoanalyzeandcomparetheeffectsofdifferentsports(swimming,football,basketball,andhandball)onfatmassandleanmassinprepubertalandpubertalgirls.Methods:Twohundredgirls(10.6±1.5yearsold,TannerstagesI–III)participatedinthestudyandweredividedinto5groups:40swimmers,40footballplayers,40basketballplayers,40handballplayers,and40controls.Fatandleanmassesatwholebody,arms,trunk,andlegsweremeasuredusingdual-energyX-rayabsorptiometry(DXA).PubertalstatuswasdeterminedusingTannertest.Effectsofdifferentsportsonfatandleanmasseswereassessedthroughanalysisofcovariancewithheightascovariates.Analyseswereperformedseparatelyin2groupsdependingontheTannerstage(prepubertalandpubertal).Results:Thegirlsofthecontrolgrouphadlessleanmassandmorefatmasscomparedtothegirlswhoplaysports(p<0.05).Thereweredifferencesinbodyfatbetweensports.Theswimmersandfootballplayershadlessbodyfat(p<0.05).Ontheotherhand,handballplayersshowedthehighestvaluesinleanmass(p<0.05).Conclusion:Impactsports(football,basketball,andhandball)andlow-impactsports(swimming)provideanappropriatedevelopmentofleanmassingrowinggirls.Wecanconcludethatpeoplepracticingsportsatearlyagesensurealowerfatmassandhigherleanmasscomparedtothosewhodonotpractice.Theseresultsmaybeusefulasapreventivemethodofadultobesity.

简介：上演注射者展出了大潜力完成低排出物并且正在成为许多民用的飞机的更好的选择。而且，它正在答应在军事引擎采用这个注射者图案，它要求大多数空气进入的燃烧通过到还原剂烟排放的注射者的燃烧室。然而，瘦上演注射者在低负担操作对燃烧不稳定性和扑灭敏感，因此为拓宽它的稳定的操作范围的技术为它在真实引擎的申请是关键的。

简介：Inthisstudy,aerodynamicbehaviorsofsweptandleanedbladeswereinvestigated.Axialandtangentialbladecurvaturesimpactsoncompressor'soperatingparameterswereanalyzedseparately.AcommercialCFDprogramwhichsolvestheReynolds-averagedNavier-Stokesequationswasusedtofindoutthementionedimpactandthecomplicatedflowfieldoftransoniccompressor-rotors.TheCFDmethodthatwasusedforsolvingflowfield'sequationwasvalidatedbyexperimentaldataofNASARotor67.Theresultsshowedthatthecompressorwithcurvedrotorshadhigherefficiency,rotorpressureratioandstableoperatingrangecomparedtothecompressorwithun-curvedrotors.Usingcurvedrotorsmostlyhadhigherimpactontheoverallstableoperatingrangecomparedtotheotheroperatingparameters.Operatingrangeinvolveschokingpointandstallpointthatwerechangedseparatelybyusingofbendedblade.Forfindingthedetailedimpactofsweepandleanangleontransonicblades,variousformsofleanandsweepangleswereexertedtobasicrotor.Itwasfoundthatsweepanglesincreasedoveralloperatingrangeupto30%,efficiencyupto2%andpressureratioupto1%.Leaningthebladesincreasedthesafeoperatingrange,thepressureratioandefficiencyby14%,4%and2%respectively.

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简介：ThisstudymainlyintroducesthetechnicalpropertiesofakindofleancoalminedfromLu'an,aprefectureofShanxiProvinceanditsapplicationtocoalinjectioninlarge-scaleblastfurnaces(BFs)inBaosteel.Chinaisrichinleancoalresources.Thetechnicalpropertiesofleancoal,includingashcontent,sulfurcontentandcaloricity,etc.,aresimilartothoseofanthracitecoalusedinBaosteel,exceptthefactthatthevolatileofleancoalishigher.Besides,theexplosivepropertyandthecokingpropertyofleancoalaresuitablefortheBFcoalinjection.Inthisstudy,leancoalwastestedinthepulverizedcoalinjection(PCI)ofaBF.Inthetest,theblendingproportionofleancoalinthecoalblendwasincreasedgradually,andtheconsequentialproductionindexesweretraced.AlltheoperationalindexesshowthattheresultsoftheBFcoalinjectionaregood,demonstratingthatleancoalcanbesubstitutedforanthracitecoalinthePCIinBFs.Withanabundantamountandspecificutilization,leancoalisfoundtobeofahigheconomicvalue.

简介：摘要：随着建筑工程施工的日益复杂和竞争的加剧，如何提高施工效率和质量成为建筑行业关注的焦点。本论文以Lean施工理念为出发点，研究了基于Lean思想的建筑工程施工优化方法。通过对比传统施工模式与Lean施工模式的优劣势，分析了Lean施工理念在提高施工效率、降低成本和优化资源利用方面的潜力。论文还提出了一套基于Lean施工理念的施工优化方案，并在实际建筑工程项目中进行验证，结果表明该方案能够显著提高施工效率、减少浪费和提升质量。

简介：Improvementonextinctionandpollutionemissionhavebecomeoneofthemostprominentresearchtopicsingasturbine.Itiswidelyrecognizedthatthefuel/airmixturedistributionintherecirculationzoneisacriticalfactorinimprovingleanblow-out(LBO)andignition.Thispaperproposedanewlowemissionschemewithfuelstagedcentrallyandhybridinjectortoimproveflameoutandemission.Arelativesmallamountoffuelentersintocentralpilotairblastatomizerburnerandthenatomizedbyinnerswirlair.Theremainingmajorityoffuelisdirectlyinjectedintovanechannelsoftheprimaryswirlerthroughaseriesofholeslocatedonthesidewallofthemainstage.Onlypilotstageisfueledunderignitionandleanflameoutcondition.Theuniformityoffuel/airmixturedistributionintheprimaryzoneofthenewdesigndecreasesNOXemission,meanwhilethefuelairmixtureinpilotrecirculationzoneislocallyrichtoimproveflameoutandignition.Experimentalinvestigationwasconductedtocomparethenewschemewithbaselinedesignofdual-swirlerintermsofLBOandignitioncharacteristicsunderthesameconditioninamulti-sectorcombustor.Itisfoundthatthefuel-airratioofignitionlimitandLBOdecreasewiththereferencevelocityincreasing.Theexperimentalresultsalsoshowthatthenewschemesuccessfullyimproveleanblow-outandbroadentheoperationrangeofthecombustor.Theexperimentalresultsindicatedthatthecentrallystagedschemecanwidentheoperationboundaryofthecombustorandcanprovideguidancefordesignandoptimizationofcombustionchamber.

简介：摘要:本文以石油化工建设单位的生产效率提升为研究对象，基于Lean思想，探讨了提高生产效率的策略。通过分析石油化工建设单位的生产流程和问题，结合Lean思想中的精益原则和工具，提出了一系列可行的策略和方法。案例分析部分通过实际案例验证了这些策略的有效性。研究结果表明，基于Lean思想的策略能够显著提升石油化工建设单位的生产效率，降低生产成本，提高质量和客户满意度。

简介：摘要：本文探讨了基于Lean原则的建筑施工生产流程优化策略的实际效果与未来展望。以住宅开发项目为例，通过精细化物料采购、看板系统的施工计划管理以及标准化工作流程，有效减少了浪费，提高了协同效率。未来，数字化技术如BIM和人工智能将进一步增强这些策略的作用，实现信息的无缝共享和精准的资源管理。然而，教育、文化转变和政策支持是实现这些成果的关键。综上，本研究为建筑行业在提高效率和可持续发展方向上提供了实践启示。

简介：摘要：旧版本的西门子 200SMART模块不能与 CP343-1 Lean进行通讯，只有固件版本在 V2.02及以上的模块才支持，才能通过 TCP连接的方式进行以太网通讯。 TCP 通讯为面向连接的通讯，需要双方都调用指令来建立连接。

简介：摘要当前电网工程造价管理中审计部门介入时间晚，导致审计风险难以及时发现、发现后也难以整改的问题。本文结合Lean-6σ思想，从客户需求的角度，使用质量屋、鱼骨图等方法，构建审计介入造价管理全过程的融合模式。

简介：摘要：利用精益管理的思想和理念，对航空发动机叶片修理模式进行改革，通过节拍分析、均衡生产、工艺布局调整等步骤，消除生产浪费，提高生产效率，保障生产任务，为航空发动机修理精益改革提供新思路。

简介：Selectivecatalyticoxidation(SCO)ofammoniawascarriedoutoverCu-MncompoundscatalystsmodifiedwithtrivalentrareearthoxideCe2O3andLa2O3respectively.TiO2wasusedassupportanddifferentratioofO2weretestedinordertofindanappropriateO2concentration(vol.%),andtheresultsshowedthat1%O2(vol.%)waspropitioustoSCOofammonia.TheeffectsofthetworareearthoxidesmodifiedcatalystsCe2O3-Cu-Mn/TiO2andLa2O3-Cu-Mn/TiO2onthecatalyticactivityandselectivityofammoniaoxidationwereinvestigatedunderthereactionconditionof500ppmammonia,1%O2(vol.%),atthetemperaturefrom125to250oC.TheresultsrevealedthebeneficialroleofCe2O3andLa2O3incatalyticactivityatlowtemperatureandleanoxygenconcentration,whilethemodificationwithCe2O3andLa2O3ledtothenegativeinfluenceonN2selectivity.ForthecatalystsmodifiedwithCeshowedlowerNOandN2OselectivitythanthecatalystsmodifiedwithLa,thentheeffectsofdifferentCeloadingsoncatalyticactivityandselectivitywerealsoconsidered,incombinationwithcatalystspreparationmethods,whichincludeincipientwetimpregnation,sol-gelmethodandco-precipitation.Resultsrevealedthatthecatalystspreparedbysol-gelmethodobtainedpreferablecatalyticactivitycomparedwiththeothers,reaching99%ammoniaat200oC,whereas96%NOwasdetected.Italsoindicatedthatdifferentcatalystpreparationmethodsignificantlydeterminedproductiondistribution.