简介:Thispapercarriesoutabinitiocalculationstostudythe80Se2(X3Σg-)stateand80Se2(X2Πg),80Se2(a4Πg)statesbyusingcompletedactivespaceself-consistentfieldandmulti-referencesecondorderperturbationtheory.Theelectroniccurvesofthesestatesincludingspin-orbitcouplingarecalculated,andthenthespectroscopicparametersareobtained.Thephotoelectronspectraof80Se2moleculeingasphaseareassignedaccordingtoFranck-Condonanalysisbasedoncalculatedpotentialenergycurves.Theionizationenergiesof80Se2moleculearedeterminedbythepresentcalculation.
简介:摘要目前,全球汽车企业之间的竞争越来越激烈,要想赢得市场竞争,必须迅速响应市场需求与变化,加快产品研发速度。传统的汽车开发流程采用串行工程的方法,由于不能在产品开发初期考虑工艺规划、质量保证及制造工艺性等问题,导致产品设计更改量大,开发周期长,生产成本高,无法适应市场竞争的要求。同步工程(simultaneousengineering,SE)作为一种全新的系统工作方法应运而生,对汽车产品及相关开发过程进行并行、一体化设计。在产品设计阶段预测后期制造过程中可能出现的问题和风险,通过产品设计变更、工艺优化等技术解决后期制造中可能出现的问题,避免设计不可制造的产品。
简介:摘要:对总装同步工程在新车型研发过程中高效协同开展进行探讨。通过开展前置活动把总装制造工艺的边界引入到产品设计中去,对总装标准化、通用化、平台化如何开展进行了描述。通过同步工程,使新车型研发周期缩短,控制生产制造成本,提高整车质量。
简介:徐卓立,郭军华,宋三泰,卢淑娟,吴德政DETOXIFYINGEFFECTOFLISHENG-SEONCDDPANDITSRELATIONTOMETALLOTHIONEININDUCTION¥XuZhuoli;GuoJunhua;SongSantai;...
简介:ThispaperpresentsthefirstspecificstudyoftheTh-andU-bearingminerals,whichwererecentlyfoundintheSEMediterraneanmarginofSpain(ElHoyazoarea,Almeriaprovince).ThesemineralsareREEphosphates(mainlymonazite)whichoccurasamoeboidal-to-elongateinclusions,fromaround10120μmto120μm,hostedinsinglegarnetcrystalsfromdacitelavasandmetamorphicrocksfromtheElHoyazoVolcanicComplex.ThandUcontentsarehigherthan1wt%,with3.04to5.62wt%forTh02,and0.7to1.75wt%forUO2.Bothelementsarealsofoundinxenotime(ThO2:0.24,UO2:0.27wt%).Giventhattheerosionofthevolcanicsourcerockshasgenerateda“placer-type”depositofmonazitesandsandthatgarnets(maincarriersofmonazite)arebeingcommercialised,anenvironmentalmonitoringandmanagementplanshouldbeurgentlyexecutedinthearea.