简介:""Mensaytheyhatetoshop,""saysZhukin,CityUniversityofNewYorkSociology(社会学)professor.""Yetwhenyouaskthemdeeperquestions,itturnsoutthattheyliketoshop.Mengenerallyliketoshopforbooks,musicandhardware.Butifyouaskthemabouttheshoppingtheydoforbooksormusic,they'llsay,'Well,that'snotshopping.That'sresearch.'""
简介:[目的]研究20(S)-人参皂苷Rg3抗心肌缺血作用及其机制.[方法]随机将50只Wistar大鼠分成5组,即空白对照组(CON),异丙肾上腺素组(ISO),20(S)-人参皂苷Rg3(5、10、20mg/kg)组.各组大鼠灌胃给予相应药物,除CON外其余各组大鼠皮下注射盐酸异丙肾上腺素(20mg/kg)制备心肌缺血模型.末次注射异丙肾上腺素2h后麻醉大鼠,取血检测血清中肌酸激酶(creatinekinase,CK-MB)和乳酸脱氢酶(lactatedehydrogenase,LDH)活力,取大鼠左心室制备匀浆后检测心肌组织超氧化物歧化酶(superoxidedismutase,SOD)活性、谷胱甘肽过氧化物酶(glutathioneperoxidas,GSH-Px)活性、总抗氧化能力(totalantioxygencapabilit,T-AOC)及丙二醛(malonaldehyd,MDA)含量.[结果]与CON组相比,ISO组血清CK-MB、LDH活力明显增高.与ISO组比较,20(S)-人参皂苷Rg3(5,10,20mg/kg)可显著降低血清CK-MB、LDH活力;与CON组比较,ISO组SOD活性、GSH-Px活性及T-AOC降低,MDA含量增高;与ISO组相比,20(S)-人参皂苷Rg3(5、10、20mg/kg)可显著提高SOD活性、GSH-Px活性及T-AOC,降低MDA含量.[结论]20(S)-人参皂苷Rg3具有抗心肌缺血作用,其作用机制与清除自由基和抗脂质过氧化有关.
简介:Romanticismisanimportantstageintheevolutionofman’sself-consciousness.Itshowsnewinterestinandnewconcernwithmanandnature.Wordsworthiswell-knownasanaturepoet.Thethemeofhumanmindandnatureinhispoemshaslongattractedreaders’attention.However,hedoesnotindulgeinnatureitselfbuttakesitasconsolationandinspirationforhumankind.Inordertohighlightthepoet’sconcernwithhumanmind,thepresentpaperchoosestoexploreWordsworth’sconcernwithchildren’smind,basedontheanalysisofWordsworth’sThePreludeandmanyofhispoemsaboutchildren.
简介:Sinceancienttimes,asoneofthesymbolsofuglyanddirty,prostitutesareinvariablylivingintheblackmarginsofsociety.Facingprostitutes’miseries,peoplealwayscannotunderstandtheiremotions,mentalitiesanddesires,ortreatsthemasequals,particularlyaswomen.ProstitutesareaspecialgroupintheoppressedwomeninWesternsocieties.MargaretandNanaaretwotypicalimagesoftheminthehistoryofwesternliterature.Withtearsandlives,theydeducetheirmiserablelifestoriessimilarly.
简介:IntheAmamaAge,contactsbetweenEgyptanditsvassals,especiallyvassalsinthenorthernCanaan,areattestedintheAmamaLetters.Amurruhasoncebeenapowerfulstateintheeyesofothervassals,asisreflectedbytheAmamaLetters.AmongtheAmarnaLetters,therewereatleast78lettersrelatingtoAmurru.JustasMurnanepointsout,“WhenAmurrufirstappearsonthepoliticalmapofSyriainthefourteenthcenturyB.C.,itisnotastheunifiedcountryitwastobecome,butasaloosegroupingofcitystates,eachunderitsownrulers,”thekingdomofAmurrumayconsistedofmanycity-states.
简介:英语中有一些习语,其名词前用one’s与用sb’s的意义是不同的,择其常见者,介绍如下:1.goone’sway动身,前往gosb’sway事情对某人有利MrBournehospitablyaskedifIweregoinghisway.伯恩先生客气地问我是不是和他一起走。Iwokeuplatethismorning,andthenthetrafficdelayedmeasIcametowork—nothingseemstobegoingmywaytoday.我今天早晨醒得迟了,上班路上又因交通拥挤而耽误了时间,看来今天我没有碰上一件顺心事。2.takeone’splace就座,就位takesb’splace代替某人WhileIwaswondering,atthis,ourschool-mastertookhisplace.当我正为这些情景感到诧异