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Notation Allquantitieswererestrictedtoonemoleunlessotherwisespecified.GGibbsfreeenergyofPhase°GiGibbsfreeenergyofpurecomponentiofphaseximolefractionofcomponentiEGexcessfreeenergyofphasekjjthorderparameterofRedlichKisterpolynomialΔGf(i)fusionfree… 相似文献
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1IntroductionGeneticalgorithms(GAs)wereproposedtosolveplanning,scheduling,oroptimizationproblemsin1970s.GAssimulatenaturalevo... 相似文献
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TELOMERASE RNA AND TELOMERASE ACTIVITY IN TROPHOBLASTIC TUMORS 总被引:2,自引:0,他引:2
INTRODUCTIONMultiplegenomicmutationsandDNAdamagecancausemalignanttransformationofhumancells.TelomeresarespecializedstructurescontainingrepeatsofthesequenceTTAGGGattheendsofeukaryoticchromosomes.Telomeresarethoughttohaveanimportantroleinchromosomeprote… 相似文献
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INTRODUCTIONFibroblastgrowthfactor (FGF)isanangio genicandmitogenicpolypeptidethatcanpromotecellproliferationanddifferentiationinawideva rietyofcelltypes (Goldfarb ,1 990 ;Basilicoetal.,1 992 ) .TheFGFfamilyhasmanymemberswithsimilaraminoacidsequenceandbiologicala… 相似文献
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1 Introduction ThespatialGreen’sfunctionsofmulti layeredmediaareusefulinanalysisofantennaandintegratedcircuitstructures.Theyareconstructedintwosteps.ThefirstistoderivethespectralGreen’sfunction .ThesecondistomakeinverseFouriertransformoftheGreen’sfunc t… 相似文献
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InlinewithincreasingacademiccontactsandfriendlycooperationsbetweenChinaandGermany ,andsupportedbytheNationalNaturalScienceFoundationofChina (NSFC)andChinaPetrochemi calCorporation(SINOPEC)andtheGermanScienceFoundation ,thefirstChina GermanySympos iumonorga… 相似文献
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《中山大学学报论丛》1996,(3)
OnColegeEnglishClasroomResearchLinLiechengItisadecadesincethecaryingoutoftheCOLLEGEENGLISHTEACHINGSYLLABUS.Wearenowfacedwith... 相似文献
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INTRODUCTIONTransforminggrowthfactorβ1 (TGF β1 ) ,amultifunctionalcytokine,isreportedasaregula torofcellgrowthanddifferentiation (Lahmetal.,1 993 ) .TGF β1 canactasagrowthinhibi tionfactorinnormalcoloncells.WithouttheregulationofTGF β1 ,thenormalcolonicepithe liumwou… 相似文献
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Wei Jianjun Qin Yiqin Liu Haiying 《上海大学学报(英文版)》1998,2(1):77-80
DirectElectronTransferReactionsofGlucoseOxidaseandD┐AminoAcidOxidaseataGlasyCarbonElectrodeinOrganicMediaWeiJianjunQinYiqinLi... 相似文献
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李世孝 《信阳师范学院学报(哲学社会科学版)》1997,(3)
SilenceinWAITINGFORGODOTLiShixiaoAbstractSilenceasadramaticdeveieisusedfrequentlybydramatiststoexpresvariousthingsandfeelings... 相似文献
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INTRODUCTIONItisafundamentalproblemincomputeraidedgeometricdesign (CAGD)andmanufacturetofindtheintersection (Laneetal.,1 980 ;Wang ,1 984;Sederbergetal.,1 986)oftheparametriccurves.SincemostofthecurvesinCAGDaredenotedbypolynomialsorrationalpolynomials,tofindtheirint… 相似文献
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《清华大学教育研究》1995,(Z1)
STATEBUDGETINGINTHEUNITEDSTATESMONICAZHONGAsacentralelementofgovernment,budgetingis″adecisionmakingsystemforallo-catingfundsa... 相似文献
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《中山大学学报论丛》1996,(3)
ndustrializationandTransformationofChineseIntelectualsGaoWenping1.OutofPalace,OutofGraceAmbivalenceaboutSelfIdentityThrough... 相似文献
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AcousticEmissionMonitoringofFatigueCrackGrowthinaSlenderWebofBridgeGirderYanTinghu(颜廷虎)ZhongBinglin(钟秉林)(DepartmentofMechanic... 相似文献
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LITERATUREREVIEWANDRESEARCHBACKGROUNDTheearliestresearchoninternationalcitiesdatesbackto 1 91 5whenP .Gaidys,theforerun nerofBritishurbanandregionalplanning ,initi atedtheideaoftheinternationalcity .In 1 966,PeterHall,theBritishscholarredefinedthecon ceptofthein… 相似文献
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《上海大学学报(英文版)》2002,(4)
·Reviews·PhysicalandMathematicalModelingoftheArgon OxygenDecarburizationRefiningProcessofStainlessSteelWEIJi He (1 )………………………………………………………………………………………………………·Letters·SteganographicTechniqueCapableofWithstandingRQPAnalysisWANGShuo Zhong ZHANGXin Peng ZHANG… 相似文献
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1 Introduction Generallyspeaking ,productconcurrentdesignislo calizedwithinenterprises .Withtheincessantdevel opmentofInternetandweb basedapplicationtech niques,however ,itisurgentlyneededtocopewiththeproblemsofproductconcurrentandcollaborativedesignindisc… 相似文献
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1 Introduction Phaseisanimportantconceptioninoptics.Itsdefini tionisexplicitinclassicoptics,butitisdifficulttogiveitsdefinitemeaninginquantumoptics.Therehavebeenseveraldefinitions,whichhavedifferentcharacteristicrespectively.SomeofthemareSusskind Glogowe… 相似文献