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简介：Happinessisabutterfly,which,whenpursued,isalwaysjustbeyondyourgrasp,butwhich,ifyouwillsitdownquietly,mayalightuponyou.

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简介：基于对教学内容和学情的分析,本课做出如下定位。从主题意义上,在对事件发展脉络的理解基础上,侧重挖掘'蝴蝶效应'在堵车事件中的规律和意义;从思维品质上,侧重于帮助学生1从具体事件中抽象和归纳规律、建构新概念的能力;2比较分析行为背后心理的能力;3辨析现象,利用规律分析问题或解决问题的能力;从价值观上,侧重于学生自己思考个体角色在事件中的意义,从而反思自己的社会角色和行为。

简介：每一只蝴蝶破茧而出时．都会经过黑暗和痛苦的过程。没有任何外来力量可以帮得上忙，所以才有了美丽的成语“破茧成蝶”。任何加速破茧的企图，都成为接近死亡的前奏。

简介：课文选自Beijinger杂志,作者为在北京生活的外国人。文章描述了作者亲身经历的交通拥堵。文章巧妙地选用'TheButterflyEffect'作为标题,是对文中交通拥堵与疏散的过程的高度总结与提升。文章语言地道、形象、生动,通过动词词组的学习学生能感受到人物的情绪与态度。本课中学生通过文本解析,进行信息提取、诠释的同时,学会用所学的知识解释现实生活中的蝴蝶现象并反思自己的行为,理解做好个人角色的价值和意义。

简介：Therearebillionsoftinyscalesonthebutterflywings,whicharrayregularlyasthetilesontheroof.Suchtiltscanformvariouscolorsofthewingandaffordthespeciesmanyabilitiestosurviveandpropagate.MorphologicalexperimentsonthewingscalesofsixbutterflyspecieslivinginnortheastofChinawereconducted.Bytheopticsmicroscope,theform,geometrydimensionandarrayofthescaleswereobservedgenerally.Byusingscanningelectronmicroscope(SEM),the2Dscanningandmeasurementwerecarriedoutandthesurfacemicroconfigurationsofscaleswereobserved.Thedimensionandmicrostructurecharacteristicsofthecrosssectionofsinglescalewereachievedthroughtransmissionelectronmicroscope(TEM).Finally,byusing3Dsoftware,three3Dmodelsweredescribedandthe3Dvisualeffectwasachieved.Thisworkcanputforwardabasicmethodforthefuturestudyonthemorphologyofbiologicalmicrostructure.

简介：「ButterflyCaught」是MassiveAttack乐队新专辑「100thWindow」的第二首单曲，在这部MV中，我们看到一只飞蛾栖息在歌手的身边，鼓动着羽翼，渐渐的，飞蛾和歌手的脸融为一体，歌手的脸慢慢转变成飞蛾的纹理……

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简介：Twenty-ninespeciesofbutterflieswerecollectedforobservationanddeterminationofthewingsurfacesusingaScanningElectronMicroscope(SEM).Butterflywingsurfacedisplaysstructuralanisotropisminmicro-,submicro-andnano-scales.Thescalesonbutterflywingsurfacearrangelikeoverlappingrooftiles.Therearesubmicrometricverticalgibbosities,horizontallinks,andnano-protuberancesonthescales.First-incline-then-dripmethodandfirst-drip-then-inclinemethodwereusedtomeasuretheSlidingAngle(SA)ofdropletonbutterflywingsurfacebyanopticalContactAngle(CA)measuringsystem.Relativelysmallerslidinganglesindicatethatthebutterflywingsurfacehasfineself-cleaningproperty.SignificantlydifferentSAsinvariousdirectionsindicatetheanisotropicself-cleaningpropertyofbutterflywingsurface.TheSAsonthebutterflywingsurfacewithoutscalesareremarkablylargerthanthosewithscales,whichprovesthecrucialroleofscalesindeterminingtheself-cleaningproperty.Butterflywingsurfaceisatemplatefordesignandfabricationofbiomimeticmaterialsandself-cleaningsubstrates.Thisworkmayofferinsightsintohowtodesigndirectionalself-cleaningcoatingsandanisotropicwettingsurface.

简介：Superluminescencediode(SLD)moduleswithwidespectrumcharacteristicsarerequiredinfibergyroscopes.A1.3μmbutterflypackagedsuperluminescencediodewiththespectrumwidthover30nmisreportedandrecentadvancesinprocessofSLDisdescribedinthepaper.TheSLDmoduleshavebeenappliedtofibergyroscopes.

简介：Natureconservationneedspeoplewhocareaboutnature,andtheeffortstoconvincepeopletocareaboutthefateofnaturehasextensivelyreliedonselectedcharismaticspecies,the'conservationicons'.Onefamousexampleisthegreatpanda,Ailuropodamelanoleuca,wellknownastheWorldWideFundforNature(WWF)logo.Whenitcomestoinvertebrates,the

简介：Thecontactanglesofdistilledwaterandmethanolsolutiononthewingsofbutterfliesweredeterminedbyavisualcontactanglemeasuringsystem.Thescalestructuresofthewingswereobservedusingscanningelectronmicroscopy,Theinfluenceofthescalemicro-andultra-structureonthewettabilitywasinvestigated.Resultsshowthatthecontactangleofdistilledwateronthewingsurfacesvariesfrom134.0°to159.2°.Highhydrophobicityisfoundinsixspecieswithcontactanglesgreaterthan150°.Thewingsurfacesofsomespeciesarenotonlyhydrophobicbutalsoresistthewettingbymethanolsolutionwith55%concentration.OnlytwospeciesinParnassiuscannotresistthewettingbecausethemicro-structure(spindle-likeshape)andultra-structure(pinnule-likeshape)ofthewingscalesareremarkablydifferentfromthatofotherspecies.Theconcentrationofmethanolsolutionfortheoccurrenceofspreading/wettingonthewingsurfacesofdifferentspeciesvariesfrom70%to95%.Afterwettingbymethanolsolutionfor10min,thedistilledwatercontactangleonthewingsurfaceincreasesby0.8°-2.1°,showingthepromotionofcapacityagainstwettingbydistilledwater.

简介：Thestress-inducedmagneticdomainswitchinginFeGathinfilmsisstudiedusingphase-fieldmethod.Inparticular,themagneticfieldisappliedalongthe[110]directionandbiaxialstressesareappliedalong[100]and[010].Acompressivepre-stresscorrespondstoasmallercoercivemagneticfieldwhileatensilepre-stresscorrespondedtoalargercoercivefield.Atthesametime,itisalsofoundthatthetransitionbetweenbutterflyandsquare-likemagnetostrictionloopsoccursatthecriticaloppositebiaxialstressstate.Thetwodifferentevolutionscorrespondtotwodifferentmechanisms:oneisthatthesingledomainswingsacrossafanareabackandforth;theotheristhatthesingledomainturnsaclockwisecircle.Theresultscanbeexplainedbythestresstunedanisotropyenergywell.

简介：QuestionsconcerningthefunctionalroleofthehollowregionofthebutterflyPyrameisatalanta(L.)scaleareexperimentallyinvestigated.Attentionwasinitiallydirectedtothisproblembyobservationofthecomplexmicrostructureofthebutterflyscaleaswellasotherstudiesindicatinghigherliftonbutterflywingscoveredwithscale.Theaerodynamicforcesweremeasuredfortwooscillatingscalemodels.ResultsindicatedthattheaircavityofanoscillatingmodelofthePyrameisatalanta(L.)scaleincreasedtheliftbyafactorof1.15andreducedthedampingcoefficientsbyafactorof1.38.Themodificationoftheaerodynamiceffectsonthemodelofbutterflyscalewasduetoanincreaseofthevirtualairmass,whichinfluencedthebody.Thehollowregionofthescaleincreasedthevirtualairmassbyafactorof1.2.Thevirtualmassofthebutterflyscalewiththehollowregionwasrepresentedasthesumofairmassoftwoimaginarygeometricalfigures:acircularcylinderaroundthescaleandaright-angledparallelepipedwithinthehollowregion.TheinteractionmechanismofthebutterflyPyrameisatalanta(L.)scalewithaflowwasdescribed.Thisnovelinteractionmechanismexplainedmostgeometricalfeaturesoftheairpermeablebutterflyscale(invertedV-profileoftheridges,nozzleofthetipedge,hollowregion,andopeningsoftheupperlamina)andtheirarrangement.

简介：也许每一个曾经自卑的孩子都问过父母类似这样的问题：“丑小鸭何时能变成白天鹅？”而天下父母总会给出相似的答案：“孩子你是最棒的，一定会有破茧成蝶、飞向远方的那一天。”于是，因为最亲的人的那一句鼓励，我们在心中种下了那颗叫做“自信”的种子。

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简介：Interactionsbetweenecologicalcommunitiesofherbivoresandmicrobesarecommonlymediatedbyasharedplant.Atripartiteinteractionbetweenapathogenicfungus-hostplant-herbivorousinsectisanexampleofsuchmutualinfluences.Insuchasystemafungalpathogencommonlyhasanegativeinfluenceonthemorphologyandbiochemistryofthehostplant,withconsequencesforinsectherbivoreperformance.HerewestudiedwhetherthebiotrophicfbngusPodosphaeraferruginea,attackingthegreatburnetSanguisorbaofficinalis,affectscaterpillarperformanceoftheendangeredscarcelargebluebutterflyPhengaristeleius.Ourresultsshowedthatthepathogenicftmgusaffectedthenumberandsizeofinflorescencesproducedbyfood-plantsand,moreimportantly,hadindirect,plant-mediatedeffectsontheabundance,bodymassandimmuneresponseofcaterpillars.Specifically,wefoundtherelationshipbetweencaterpillarabundanceandvariabilityininflorescencesizeonaplanttobepositiveamonghealthyfood-plants,andnegativeamonginfectedfood-plants.Caterpillarsthatfedonhealthyfood-plantsweresmallerthanthosethatfedoninfectedfood-plantsinonestudiedseason,whiletherewasnosuchdifferenceintheotherseason.Weobservedtherelationshipbetweencaterpillarimmuneresponseandtheproportionofinfectedgreatburnetswithinahabitatpatchtobepositivewhencaterpillarsfedonhealthyfood-plants,andnegativewhencaterpillarsfedoninfectedfood-plants.OurresultssuggestthatthisbiotrophicfungalinfectionofthegreatburnetmayimposeasignificantindirectinfluenceonP.teleiuscaterpillarperformancewithpotentialconsequencesforthepopulationdynamicsandstructureofthisendangeredbutterfly.

简介：摘要目的探讨二尖瓣Butterfly修复技术应用于二尖瓣后叶严重脱垂患者外科修复的中远期疗效。方法回顾性分析2016年7月—2019年10月南京大学医学院附属鼓楼医院34例行外科瓣膜修复的二尖瓣后叶严重脱垂患者的临床资料。其中男21例、女13例，年龄33～73岁。患者均在浅低温体外循环下完成二尖瓣Butterfly修复技术。术后随访超声心动图，评估术中、术后二尖瓣反流程度，观察有无收缩期前向运动(SAM)现象及其他并发症。结果34例患者均成功完成二尖瓣修复，手术时间143～223 min，心肌阻断45～69 min。术中经食道超声心动图提示微量反流/无反流，均无SAM现象。患者术后均获随访5～44个月，无死亡和严重心血管不良事件。末次随访经胸超声心动图显示，轻微反流/无反流33例、无症状中度反流1例，均无SAM现象。所有患者出院/术后3个月后均停用华法林抗凝治疗。结论对于二尖瓣后叶严重脱垂患者，使用二尖瓣Butterfly修复技术可以获得较好的中远期修复效果，术中最大限度降低了二尖瓣后叶高度，避免了SAM现象，且手术技术难度不大，便于推广。