学科分类
/ 25
500 个结果
  • 简介:参考美国毕业后医学教育认证委员会(ACGME)住院医师6大核心能力和加拿大皇家内外科学院(TheRoyalCollegeofPhysiciansandSurgeonsofCanada)CanMEDS住院医师能力框架的住院医师规范化培训评价指标所设立的住院医师规范化培训Self-study方法,以各联盟医院的住院医师规范化培训管理机构及内科、外科、全科、麻醉科、医学影像科住院医师规范化培训专业基地为评估对象。评估内容:涉及管理机构标准及专业基地项目标准的各评估指标共计140项。对140个评估项目开展现况调研、缺陷查找、设定目标、持续改进的自我评估流程,旨在探讨Self-study模式在住院医师规范化培训中的实践与效果。评估结果显示:在140项评估指标中,完全达标的为132项,部分达标需要完善的有5项,未达标需要计划启动的有3项,总体达标率为94.3%。通过本次Self-study的自我评估发现:中国的住院医师规范化培训急需建立一整套既与国际接轨又符合我国国情的住院医师规范化培训质量控制与综合评估体系。

  • 标签: 住院医师规范化培训 SELF-STUDY 持续改进 实践
  • 简介:Ithasbeenreportedthatthemainfactorswhichinfluencethepropertiesofself-flowcastableare:1)theparticlesizedistributionand2)thefunctionofdispersantandsurfactant,Inthepresentpaper,theoptimumrangeofparticlesizedistributionandthebestispersantandsurfactantaswellasthefunctionmechanismsarediscussed,Alsoamethodtoeveluateself-flowcastablearegiven.

  • 标签: 耐火材料 自流浇注块 粒度 浇铸料
  • 简介:Inordertoovercomecastables'innateimperfectionfrombondphase,wereferaso-called"self-bonded"phasetomullitecastableusingsilicasolwiththehelpofsuperfinepowderasthebindrforfullyexertingthemeritoftheperfectintegralityofcastable,There-searchworkdemonstratesthatcomparingwithlow-cementcastable,thiskindof"self-bonded"mullitecastableischarterizebyhavingperfectintegralityofstructureinthewholescopeoftesttemperature,beingverydense,andexcellentinvolumestability,itsporositychangingverylittleandsmoothly,thecoldandhotstrengthesbeinghighandstable,hightemperaturecompressivecreeplittle.Thisisaverypromisingcastablestructuralrefrctory.

  • 标签: 莫来石 自结合浇注块 耐火泥 耐火原材料
  • 简介:Emulsifier-freeemulsionpolymerizationofstyreneinthepresenceofβ-hydroxypropylacrylatewasstudied.Theemulsifier-freeselfcrosslinkedpolystyrenelatexmicrosphereswasobtained.Monomerconversionishigherthan90%when[St],[β-HPA],[KPS]is2.66,0.228,and5.8×10^-3mol/Lrespectivelyunder80℃for5h.Themono-dispersedlatexparticlediameterandcolloidalparticleconcentrationweregivenasD=0.23um,N=3.13×10^13/cm^3byTEManalyse,Thefactorsofinfluencinglatexstabilitywerediscussed.ThecopolymerwascharacterizedbyIRanddissolutionexperiment.Theapparentactivationenergyofpolymerizationandpolymerizationrateconstantwereobtainedtobe78.7KJ/moland514.4/mol.srespectively.

  • 标签: 聚苯乙烯 橡浆微球体 合成研究
  • 简介:Cholesterolmodifieddextran(CHD)havingself-aggrgationorself-assemblypropertywassynthesizedfromcholesteroland1,6-hexyldiisocyanate.Thedegreeofsubstitutionofcholesterylmoietyindextranmainlineis3-5cholesterolsthe100glucoseunits.WehavepreparedwatersolutionofCHDusingprobetypesonifierandN-Phenyl-a-naphthylamine(PNA)asafluorescentprobetostudyCHDself-aggregateprocess.Foreachsolutionoftwosamples,wefoundthatthemaximumemissionofPNAinCHDconcentration.Thischangecorrespondstotheformationofmicelle-likeclustersself-aggregatedbythecholesterolmoietyoncetheCHDconcentration.Thischangecorrespondstotheformationofmicelle-likeclustersself-aggregatedbythecholesterolmoietyoncetheCHDconcentrationexceeds0.01mg/ml.

  • 标签: 聚合物 聚糖 荧光 分析
  • 简介:Around30%ofGenerationXers--thoseages35and50--saidtheirowngeneration.wasself-absorbedandwasteful,and20%ofthebabyboomers2saidthesameaboutegroup,themselves,thePewtheiragecohortMillennials"standoutintheirwillingnesstoascribenegativestereotypestotheirowngeneration,"thestudysaid.Theolderthegroup,themorepositivelytheysawthemselves,thePewstudyfound.

  • 标签: 高校 英语学习 学习方法 阅读知识 阅读材料
  • 简介:GrazingincidentX-raydiffractionatdifferentgrazinganglesforself-organizedGedotsgrownonSi(001)arecarriedoutandlatticeconstantexpansionsof1.2?paralleltothesurfaceascomparedwiththeSilatticearefoundwithintheGedots.A3.1?latticeexpansionoftheGedotsalongthegrowthdirectionisalsofundbyordinaryX-ray(004)diffraction.AccordingtothePoissonequationandtheVegardlaw,ourresultsinferthattheGedotshouldbeapartiallystrainrelaxedSiGealloywithGecontentofabuot55?2001ElsevierScienceB.V.Allrightsreserved.

  • 标签: X射线衍射分析 自组织 锗薄膜生长 硅基底 半导体材料
  • 简介:在两倍旋涡(SODV)和台风的形成的组织工会之间的关系与大气的Research/Penn州的Mesoscale模型(MM5)的第五产生的国家中心基于六个数字实验被讨论,进一步的讨论与结果显示出的真实台风case.The被做有批评距离dc为在baroclinicatmosphere.When的SODV,在分开的旋涡之间的距离比小或等于dc,进自我组织的双旋涡

  • 标签: baroclinic 空气 两倍旋涡的组织工会 台风形成
  • 简介:Nanowireshaveattractedmoreandmoreinterestinrecentyearsduetotheiruniquepropertiescomparedtobulkmaterials[1].Thequitedifferentpropertiespossessedbynanowiresaremainlycausedbytheirhighsurface-tovolumeratio[2].Behaviorsofnanowiresunderirradiationconditionshavealsoattractedintensiveattentionintheseyears[3??5].Ithasbeenproposedthatnanowiresmayberadiationresistancebecausetheirlargesurface-to-volumeratio,andmeanwhilethesurfacearetheperfectsinksfordefectscreatedintheradiationprocess[3].

  • 标签: Molecular Dynamics STUDY
  • 简介:Thispaperpresentstheresultsofaparametricstudyofself-centeringseismicretrofitschemesforreinforcedconcrete(RC)framebuildings.Theself-centeringretrofitsystemfeaturesflag-shapedhysteresisandminimalresidualdeformation.Forcomparisonpurpose,analternateseismicretrofitschemethatusesabilinear-hysteresisretrofitsystemsuchasbuckling-restrainedbraces(BRB)isalsoconsideredinthispaper.Theparametricstudywascarriedoutinasingle-degree-of-freedom(SDOF)systemframeworksinceamulti-storybuildingstructuremaybeidealizedasanequivalentSDOFsystemandinvestigationoftheperformanceofthisequivalentSDOFsystemcanprovideinsightintotheseismicresponseofthemulti-storybuilding.Apeak-orientedhysteresismodelwhichcanconsiderthestrengthandstiffnessdegradationisusedtodescribethehystereticbehaviorofRCstructures.Theparametricstudyinvolvestwokeyparameters-thestrengthratioandelasticstiffnessratiobetweentheseismicretrofitsystemandtheoriginalRCframe.Anensembleof172earthquakegroundmotionrecordsscaledtothedesignbasisearthquakeinCaliforniawithaprobabilityofexceedanceof10%in50yearswasconstructedforthesimulation-basedparametricstudy.Theeffectivenessofthetwoseismicretrofitschemesconsideredinthisstudyisevaluatedintermsofpeakdisplacementratio,peakaccelerationratio,energydissipationdemandratioandresidualdisplacementratiobetweentheSDOFsystemswithandwithoutretrofit.ItisfoundfromthisparametricstudythatRCstructuresretrofittedwiththeself-centeringretrofitscheme(SCRS)canachieveaseismicperformancelevelcomparabletothebilinear-hysteresisretrofitscheme(BHRS)intermsofpeakdisplacementandenergydissipationdemandratiowhilehavingnegligibleresidualdisplacementafterearthquake.

  • 标签: EARTHQUAKE REINFORCED concrete FRAME structure nonlinear
  • 简介:这研究调查堵塞的multitone的频率偏移量怎么影响调音的快跳跃频率的二进制频率移动(FFH/BFSK)自我使添加剂白人Gaussian噪音(AWGN)正常化(SNZ)在\O下面的接收装置。FFH/BFSKSNZ接收装置的平均bit-error-rate(BER)表情和有频率的通讯系统multitone抵消为理解模拟更好结果的缘故堵塞的FFH/BFSK传播光谱(SS)的普通BER表情。当堵塞力量是中等的时,有在堵塞的最糟的casemultitone(MTJ)和AWGN下面的差异的FFH/BFSKSNZ接收装置的BER性能受不了multitone堵塞的模拟结果表演是频率偏移量,它被几模拟验证,不同频率偏移量在堵塞的multitone设置了。因此,在堵塞的multitone下面的FFH/BFSKSNZ接收装置能在堵塞的multitone的频率偏移量的帮助下被作斗争。

  • 标签: 多音干扰 频率偏移 BFSK 误码率性能 分集接收机 快跳频
  • 简介:Electroactiveself-assembledmonolayers(SAMs)containingviologeugroupareformedthroughtheadsorptionofthiol-functionalizedviologencompoundCH3(CH2)9V2+(CH2)8SH,whereV2+isN,N’-diaIkylbipyridinium(i.e.aviologengroup),ontogoldelectrodesfrommethanol/watersolutionanditselectrochemicalbehaviorisinvestigatedbyAcvoltammetryandsquarewavevoltam-metry,whichhavethehighsensitivityagainstbackgroundcharging.TheviologenSAMformedisasub-monolayerandthenormalpotentialscorrespondingtothetwosuccessiveone-electrontransferprocessesoftheactivecenters(viologen)are-360mVand-750mV(vs.Ag/AgCl)in0.1mol/Lphosphatebuffersolutions(pH6.96)respectively,andthestandardelectrontransferrateconstantis9.0s-1TheelectrochemicalbehaviorofthisSAMinvarioussolutionshasbeenpreliminarilydiscussed.

  • 标签: SELF-ASSEMBLED monolayers VIOLOGEN AC VOLTAMMETRY square
  • 简介:Background:Thewell-roundeddevelopmentofthechild,includingphysical,cognitive,emotional,andsocialhealth,maybethemostefficientroutetowell-beingandacademicsuccess.Theprimarygoalwastoinvestigatethefeasibilityofimplementinga12-weekstructuredprogramofphysicalactivity(PA)incorporatingcognitive,social,andemotionalelementsinpreschool.Additionally,thisstudy,usingawithin-subjectdesign,examinedtheacuteeffectsofaPAsessiononclassroomengagementandchangesonperceivedcompetenceandpeeracceptancefromthefirsttothelastweekoftheprogram.Methods:Twenty-sevenpreschoolers(meanage=4.2years)completedthePictorialScaleofPerceivedCompetenceandSocialAcceptanceforYoungChildrenbeforeandafteratwice-weeklyPAprogram.Unobtrusiveclassroomobservationswereconductedforverbal,social,andaffectiveengagementduringthefirstandlastweekoftheprogram,bothfollowingastructuredPAsession(experimentalday)andonadaywithoutPA(controlday).Treatmentfidelitywasmonitoredtoensurethattheinterventionwasdeliveredasdesigned.Results:ThechildrenexhibitedlongerperiodsofverbalandsocialengagementduringclassroomperiodsthatfollowedPAsessionsthanonnon-PAdays.ChildrenalsoexpressedmorepositiveaffectfollowingPAsessionsduringthelastweekofthePAprogram.Despitehighbaselinescores,perceptionsofgeneralcompetenceincreasedmeaningfully(η2=0.15,p=0.05),drivenbyincreaseinperceptionsofcognitivecompetence(η2=0.15,p=0.06).Conclusion:ThisstudydemonstratesthefeasibilityofprovidingstructuredPAprogramtopreschoolers.Moreover,theseinitialfindingssuggestthatpurposelydesigned,structuredPAmayhelpadvancethesocial–emotionalengagementandperceivedcompetenceofpreschoolchildren.

  • 标签: 学龄前儿童 结构化 社会 课堂 情绪 知觉
  • 简介:

  • 标签: