简介：每个人都有弱点，即便是那些看上去很强的人也如此。过分在意自身的缺陷，就无法强化你的优势。记住：我们都是被上帝咬了一口的苹果。

简介：一只有裂缝的水罐为自己的缺陷而深感内疚，但它忽略了由它浇灌出的美丽花朵。人人都有属于自己的不足，只要正视它们，那么……AwaterbearerinIndiahadtwolargepots,eachhungoneachendofapole,whichhecarriedacrosshisneck.Oneofthepotshadacrack(裂缝)init,andwhiletheotherpotwasperfectandalwaysdeliveredafullportionofwaterattheendofthelongwalkfromthestreamtothemaster蒺shouse,thecrackedpotarrivedonlyhalffull.Fortwoyearsthiswentondaily,withthewaterbearerdeliveringoneandone鄄halfpotsfullofwatertohismaster...

简介：这个故事发生在古代印度。仆人每天要往主人家挑一担水，在他挑水杆子的一头是一个精致完美的好罐子，另一头却是一个有裂缝的破罐子。好罐子洋洋得意，它每次都能圆满完成任务；破罐子自惭形秽，因为每次到家时，只剩下了半罐水。有一天，破罐子为自己没有把事情做好而羞愧地向仆人道歉。然而，出乎它的意料，仆人告诉了它一个秘密，破罐子惊喜地发现原来自己的缺点利用好了，可以转化成为优点，办成好罐子办不成的事……

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简介：Anewpolymer,polyzirconoxanesal（PZS）,issynthesizedfromthereactionofzirconiumoxychlorideoctahydrate（ZrOCl2-8H2O）withacetylacetone（Hacac）andsalicylalcohol（SA）byone-potprotocol.Thepolymerissolubleincommonorganicsolvents,suchasethanol,methanol,acetone,tetrahydrofuranandchloroform,andexhibitsrheologywithviscosityof100-300mpasat25℃.Thesepropertiesaresuitableforusesinfabricationofceramicmatrixfibercomposites.Pyrolysisofthispolymerat1300℃inargonprovidesnanosizedZrCwithsphericalmorphologyandsizeof20-100nm.

简介：Tosolvetheproblemabouttheinhomogeneousthermaleffectofpotheatedbycoilsalongthecircumference,anovelcoilwindingmethodisproposedandcomparedwiththegeneralwindingmethodinthepaper.First,basedontheBiot-SavartlawandAmpere’srule,themagneticinductiongeneratedbyastraightcurrentcarryingconductorandacurrentloopisdiscussed,respectively.Thenthenovelcoilwindingmethodisdevelopedbyadjustingthelocationofinhomogeneousjoints.Thejointsareperiodicallyscatteredalongthecircumferentialdirectionandsymmetricallydesignedaroundthecentralaxis.Numericalresultsshowthatthequitenon-uniformtemperatureinthebaseofpotatthecirculardirectioniseffectivelyimprovedbyusingtheproposedwindingmethod.Thepotentialdangerproducedbyhightemperatureatsomeregionofcoilsplateisminimized.Itisenergy-efficientandsafeforresidentialappliances.

简介：Bis-silicon-bridged芪衍生物在联合了二度的准备的一个修改过程被综合[2-(silyl)苯基]乙炔和它的intramolecular在一个壶的减少的环合。结果显示一条壶途径在可比较的收益生产了目标产品到以前报导的二拍子的圆舞方法的。

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简介：金融实践中，金融资产回报不仅具有厚尾性、波动的异方差性两大特点，而且其波动表现出明显的长期记忆性。本文利用FIGARCH模型处理波动异方差性和长期记忆性、EVT-POT方法捕捉回报分布厚尾的优势，提出了能反映厚尾性、异方差性和长期记忆性的金融风险度量模型——基于EVT-POT-FIGARCH的动态VaR模型，并用中国股票市场的沪深300指数和上证综合指数的每日收盘价进行实证分析。结果表明，模型能较好地处理这两个指数回报序列的三大特点．更准确地度量其VaR风险。

简介：Aneficientliquid-phasesynthesisofisoxazolinesthrougha1,3-dipolarcycloadditionisdescribed.Solublepolymer-supportedacrylatereactedwithnitrileoxidesgeneratedin-situ,followedbycleavagefromthesupportgivingcorrespondingisoxazolinesinhighyieldsandexcellentpurities.

简介：pyrazolone衍生物的一个新班被孤立在对从在3-methyl-1-phenyl-5-pyrazolone和arylaldehydes之间的2:1冷凝作用反应的优秀收益好面对离子的液体[HMIM]HSO4。混合物被他们的红外，NMR系列，MS和元素的分析描述。方法论的重要特征是底层，更高的收益和更短的反应时间的一个宽申请范围。

简介：ThemaindisadvantageofmicroporousSSZ-13catalystusedinthemethanoltoolefins(MTO)processisitsrapiddeactivationduetoitsrelativelylowcokeresistance.Meanwhile,thehierarchicalzeolitesusuallyexhibitimprovedcatalyticstabilitythankstotheirbettermasstransferability.Herein,thehierarchicallynanoporousSSZ-13zeoliteswereone-potsynthesizedbyusingN,N,N-trimethyl-1-adamantanammoniumhydroxideasamicroporousstructuredirectingagentandC18H37N+(CH3)2C6H12N+(CH3)2C6H13(Br-)2(hereinafterabbreviatedasC18-6-6Br2)asamesoporogen.ThehierarchicallynanoporousSSZ-13catalystwascharacterizedbyXRD,N2physisorption,SEM,TEM,TG-DTG,27Aland29SiNMRspectroscopyandNH3-TPDtechniques.TheresultsshowedthatthehierarchicalSSZ-13zeolitesynthesizedinthepresenceoftheC18-6-6Br2surfactantexhibitsaggregatesofprimarynanocrystalsandcontainsthewell-developedmesoporesandexcellentacidity.Comparedtoitsconventionalcounterpart,thehierarchicalSSZ-13zeolitehaslongercatalyticlifetimeandhigherselectivityforethyleneandpropyleneintheMTOreaction,whichcanbeattributedtothesynergisticeffectoftheirgoodacidityandimproveddiffusionpropertiesresultedfromthehierarchicalporestructure.

简介：Air-atomizedfogcoolingisparticularlysuitablefortheafter-potcoolingofgalvanizedsteelstrips.Withairandwaterservingasworkingmedia,anexperimentalstudywasconductedontheatomizationcharacteristicsofanewly-developedcross-flowtypeoffognozzles.Thewaterfluxdistribution,sprayangleandpressureofwaterandairweremeasured.Theresultsshowthatthewaterdropletsizewassmallandinsensitivetothewaterflowrate.Thesprayanglewassmallandthewaterflowrateslightlyaffectedtheairpressureinthechamber.Anempiricalcorrelationbetweenthepressureinthechamberandthegasflowratewasobtainedforthepurposeofequipmentdesign.

简介：目的：建立SYBRGreenⅠ实时荧光PCR定量检测人POT1基因的方法。方法：依据人POT1基因及参照基因TBP基因序列设计引物，以人类乳腺癌细胞系MCF-7总RNA逆转录合成的cDNA为模版，以TBP基因为参照基因，应用SYBRGreenⅠ实时荧光定量PCR检测POT1基因的表达。结果：POT1和TBP基因熔解曲线为单峰，无杂峰及二聚体。POT1基因及参照基因TBP基因扩增效率相同（直线斜率0．0171〈0．1）。POT1基因批内变异与批间变异分别为1.3％和2.1％；TBP基因批内变异与批间变异分别为1．2％和2．6％。结论：建立了SYBRGreenⅠ实时定量检测人类POT1基因的方法，该方法简单快速，经济，灵敏度高，特异性和重复性好，可用于人类POT1基因的定量分析。

简介：Asimpleone-potnon-isocyanaterouteforsynthesizingthermoplasticpolyureasispresented.Insituurethanizationwasconductedfromthering-openingreactionofethylenecarbonatewithpoly(propyleneglycol)bis(2-aminopropylether)andhexanediamine,m-xylylenediamine,ordiethyleneglycolbis(3-aminopropyl)etherat100℃for6hundernormalpressure.Melttransurethanepolycondensationwassuccessivelyconductedat170℃underareducedpressureof399Pafordifferenttimeperiods.Aseriesofnonisocyanatethermoplasticpolyureas(NI-TPUreas)wereprepared.TheNI-TPUreaswerecharacterizedbygelpermeationchromatography,FTIR,1H-NMR,differentialscanningcalorimetry,thermogravimetricanalysis,wide-angleX-raydiffraction,atomicforcemicroscopy,andtensiletest.NI-TPUreasexhibitedMnofupto1.67×10^4g/mol,initialdecompositiontemperatureover290℃,andtensilestrengthofupto32MPa.SeveralcrystallizableNI-TPUreasexhibitedTmexceeding98℃.NI-TPUreaswithgoodthermalandmechanicalpropertieswerepreparedthroughagreenandsimpleone-potnon-isocyanateroute.

简介：Asimpleeffectivesynthesisofbis(dihydropyrimidinone-4-yl)benzenederivatives,usingboricacidascatalyst,fromisophthalicaldehydeorterephthalicaldehyde,1,3-dicarbonylcompoundsandureaorthioureainglacialaceticacidwasdescribed.AstheexpansionoftheclassicalBiginellireaction,thismethodhastheadvantageofexcellentyields83%-94%andshortreactiontime0.5-1.5h.

简介：Anovelin-situroutewasemployedtosynthesizeLiFePO4/carbon-nanofibers(CNFs)composites.Theroutecombinedhigh-temperaturesolidphasereactionwithchemicalvapordeposition(CVD)usingFe2O3andLiH2PO4astheprecursorsforLiFePO4growthandacetylene(C2H2)asthecarbonsourceforCNFsgrowth.ThecompositeswerecharacterizedbyX-raydiffraction(XRD),Brunauer-Emmett-Teller(BET)specificsurfacearea,fieldemissionscanningelectronmicroscopy(FE-SEM),andtransmissionelectronmicroscopy(TEM).Theelectrochemicalperformanceofthecompositeswasstudiedbygalvanostaticcyclingandcyclicvoltammetry(CV).Theresultsshowedthatthein-situCNFsgrowthcouldberealizedbythecatalyticeffectoftheFe2O3precursor.Thesampleafter80minCVDreactionshowedthebestelectrochemicalperformance,indicatingapromisingapplicationinhigh-powerLi-ionbatteries.

简介：AfacilehydrothermalmethodwasdevelopedforthepreparationofFe2O3@CnanocompositesusingFeCl3·6H2Oasironsourceandglucoseascarbonsourceunderalkalinecondition.Themorphologyandstructureoftheas-preparedproductwereidentifiedbytransmissionelectronmicroscopy(TEM),highresolutiontransmissionelectronmicroscopy(HRTEM),field-emissionscanningelectronmicroscopy(FESEM),X-raydiffraction(XRD),Ramanspectroscopy,FourierTransforminfraredspectroscopy(FTIR),andthermogravimetricanalysis(TGA).Theas-prepareα-Fe2O3@Cnanocompositeswereemployedforsupercapacitorelectrodematerial.Thesynergisticcombinationofcarbonelectricaldouble-layercapacitanceandα-Fe2O3pseudo-capacitanceestablishedsuchnanocompositesasversatileplatformforhighperformancesupercapacitors.Thesynthesismethoddevelopedhereisexpectedtoobtainothermetaloxide/carboncomposite.

简介：Asimpleandefficientmethodhasbeendeveloped;benzil/benzoinundergoessmoothcondensationwithvarioussubstitutedaldehydeandammoniumacetateinthepresenceofpotassiumdihydrogenphosphate(KH_2PO_4)undermildreactionconditionstoaffordthecorrespondingtrisubstitutedimidazoleinexcellentyields.Themethodforsynthesisofproduct,thereactionmixturewasrefluxinethanolfor40-90min.Thepresentmethodissimple,efficient,andcost-effective.

简介：New[1+1]and62-membered[2+2]Schiffbasemacrocyclescontaininga2,6-diamidopyridinesubunithavebeensynthesizedbycondensationreactionoftheprecursorspyridine-2,6-dicarboxamideand1,10-bis(20-formylphenyloxy)decaneinthepresenceofphosphoricacidviaaone-potprocess.Thecyclocondensedproductswereeffectivelyisolatedbygelcolumnchromatographyandcharacterizedby~1HNMR,FTIR,massspectrometryandX-rayanalysis.Thetwomacrocycleshaveatwistedstructure,andnotanopen‘circular’conformationinthesolidstate.