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11 个结果
  • 简介:Areyouhungry?It'snoonatLTETV.SusieandJamesarecookinglunchinthekitchen:.They'remakingscrambledeggs.Theycancookenoughforeveryone.It'sasimplerecipe.Butit'salsoreallygood.Theyneedeggs,milk,butter,saltandpepper.Theyalsoneedbread.Theycanputtheirscrambledeggsonsometoast.

  • 标签: 中等教育 英语 阅读 理解
  • 简介:Inthispaper,wediscussasimplifiedmodelofmitosisinfrogeggsproposedbyM.T.BorisukandJ.J.Tysonin[1].Byusingrigorousqualitativeanalysis,weprovetheexistenceoftheperiodicsolutionsonalargescaleandpresentthespaceregionoftheperiodicsolutionsandtheparameterregioncorespondingtotheperiodicsolution.Wealsopresentthespaceregionandtheparameterregionwheretherearenoperiodicsolutions.Theresultsareinaccordancewiththenumericalresultsin[1]uptothequalitativeproperty.

  • 标签: Model of MITOSIS FROG EGGS LIMIT
  • 简介:World’sLargestHatcheryofDinosaurEggsFossiltreasuresthathadlainformillionsofyearsunderthegroundinHenanfinallycametolightlastge...

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  • 简介:迪斯尼短片中总会隐藏着一些"珍宝"等着我们去发现,擦亮我们的眼睛,一起去寻找背后的彩蛋吧!

  • 标签: 中学 英语 课外阅读 阅读材料
  • 简介:我们常用“如履薄冰”形容一个人做事十分小心谨慎.像在薄冰上步行。英语中类似的说法是“walkoneggs”,或者“treadoneggs”.就是非常小心地步行的模样.美语中则有这样的一个词组“walkSpanish”.原意是指小孩子在游戏的时候被人提着衣领踮着脚尖步行.

  • 标签: 英语阅读 阅读资料 中国 英语学习
  • 简介:摘要:从Ganzhou,江西省和他们忍受的胚胎的骨骼的上面的白垩纪的二个elongatoolithid恐龙鸡蛋被描述。他们在中国与胚胎的骨骼代表第一个oviraptorosaurian鸡蛋并且提供oospecies能被相关到某些恐龙taxon/taxa的第一个例子。二颗卵与在从在卵壳的宏观结构和微观结构的一样的区域的一样的地平线的一个女oviraptorosaurian骨盆内的卵的对一样,并且能被指oospecies,Macroolithusyaotunensis赵,1975。胚胎的骨骼的保存部分的形态学显示他们可能被oviraptorid,从广东省的Heyuanniahuangi或密切相关的oviraptorosaurian生了,它也可能在迟了的白垩纪在Ganzhou区域被过了。二个鸡蛋的胚胎的骨骼不在一样的发展中阶段。在鸡蛋之一,保存vertebrae的Heyuanniahuangi很好被骨化,显示它就被孵。

  • 标签: 胚胎骨架 晚白垩世 江西 恐龙蛋
  • 简介:Themethodforcollectingeggsofthestripedstemborer.Chilosuppressalisusingplasticbagswasstudiedincomparisonwithusingcagedriceplants.TherewasnosignificantdifferenceinfecundityofC.suppressalisat279eggs/mothandinpercentageofhatchedeggsat95%betweeninplasticbagsandonriceplants.Moreeggmasseswerecollectedonplasticbagsthanonriceplants,whereasmoresmallereggmasses(lessthan100eggspermass)inplasticbagsthanonriceplants.TheadvantagesincollectingeggsofC.suppressalisandotherinsectsbyusingplasticbagswerealsodiscussed.

  • 标签: 水稻害虫 二化螟 三化螟 收集方法 塑料袋
  • 简介:TheregionbetweenthepreexistingandnascentmembranesofacleavingRanaeggisadenseprotrusionregionofnearly40μmwideat180°stage.Later,thisregiondifferentiate,intoanupperpart,astripwithlong,branchedandrandomlydistributedprotrusionswhicharederivedlargelyfromthepreexistingmembrane,andalowerpart,abandwithmicrovilli.During4-and8-cel1stages,thestripisalmostvanishedandmicrovilliinthebandisshortened.Thenascentmembraneissmoothatthe180°stage,thenaroughareaappearsbelowthesmoothregionandquicklyexpands.Wheatgermagglutininwhichcanbindtopreexistingmembraneinterruptsthedevelopmentoftheregionbetweenthepreexistingandnascentmembranes.Detergent,Brij,havingthepropertytoincreasetheareaofnascentmembrane,doesnotinterruptthedevelopmentoftheregionbetweenthepreexistingandnascentmembranes.

  • 标签: Gleavaqe region BETWEEN the preexisting and
  • 简介:IncubationofdinoflagellateCrythecodiniumcohniichromosomesincytoplasmicextractsofunfertilizedXenopuslaeviseggsresultedinchromosomesdecondensationandrecondensation,nuclearenvelopeassembly,andnuclearreconstitution.DinoflagellateCrythecodiniumcohniiisakindofprimitiveeukaryotewhichpossessesnumerouspermanentlycondensedchromosomesanddiscontinuousdouble-layerednuclearmembranethroughoutthecellcycle.Theassemblednuclei,beingsurroundedbyacontinuousdoublemembranecontainingnuclearporesandtheuniformlydispersedchromatinfibersaremorphologicallydistinguishablefromthatofDinoflagellateCrythecodiniumcohnii.However,incubationofdinoflagellateCyrthecodiniumcohniichromosomesintheextractsfromdinoflagellateCrythecodiniumcohniicellsdoesnotinducenuclearreconstitution.

  • 标签: 纯化 甲藻染色体 爪蟾 蛙卵无细胞提取物 核重组 细胞核
  • 简介:ToinvestigatethechangesofthebiochemicalcompositionofAmericanshad(Alosasapidissima)eggsandlarvaeatembryonicandearlylarvalstages,sampleswerecollectedatdifferentdevelopmentstagesfromartificialfertilizationtotheendofyolkabsorptionincluding2h,12hand30hafterfertilizationandnewlyhatchedlarvaeincluding1and3daysafterhatching.Thecompositionoflipid,fattyacids,proteinandaminoacidswereanalyzed.Thecontentoftotalproteinexhibitedadecreasingtrendduringembryogenesisandlarvaldevelopment,andasignificantreductionwasdetectedafterhatching(P<0.05).Thetotallipidcontentremainedrelativestable.Asignificantreductionwasdetectedinalmostallaminoacidsafterhatchingexceptforglycine(P<0.05),whileasignificantdecreasewasfoundinthecontentofcysteine,proline,tyrosine,valine,isoleucine,leucineandphenylalanineduringtheyolk-sacphase(P<0.05).Ontheotherhand,allthegroupsoffattyacidsremainedstableduringtheperiodofembryogenesis.Butafterhatching,asignificantdecreasewasfoundinthecontentofC18:2n-6,C18:3n-6,SFAandratioofEPA/ARA(P<0.05),whileasignificantincreasewasfoundinthecontentofC18:3n-3,C20:4n-6,C22:6n-3andratioofn-3/n-6(P<0.05).Inconclusion,thecombineddatasuggestedthatAmericanshadutilizestheproteincontentaspreferentialenergysubstratesduringembryonicandearlylarvaldevelopmentswithsomespecificityintheconsumptionofdifferentaminoacids.

  • 标签: Alosa sapidissima development LIPID protein AMINO