学科分类
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7 个结果
  • 简介:Anewcytotoxicpyrrolidinoindolinediketopiperazinedimer,cristatuminE(1),wasisolatedfromthefermentationbrothofthealgalfungusEurotiumherbariorumHT-2associatedwiththemarinealgae,Enteromorphaprolifera.ThestructurewasdeterminedbyspectroscopicanalysesandMarfey’saminoacidanalysis.CristatuminE(1)showedcytotoxicityagainstK562tumorcelllineandantibacterialactivityagainstEnterobacteraerogenesandEscherichiacoliwithIC50andMICvaluesof8.3,44.0and44.0mmol/L,respectively.

  • 标签: 细胞毒性 散囊菌 二聚体 藻菌 哌嗪 二酮
  • 简介:Hightimeresolutionmeasurementsoftheelectrostaticfluctuations,radialelectricfieldErandturbulence-inducedelectronfluxΓehavebeenperformedacrossthetransitionoflowerhybridcurrentdriveimprovedconfinementwithagraphiteLangmuirprobearrayatthelastclosedfluxsurfaceoftheHT-7tokamak.ThedecreaseofΓeisdominatedbythesuppressionoffluctuationlevels,whichfollowsthechangeofEr.AreversalofthepoloidalpropagationdirectionofturbulencedemonstratesthatthepoloidalpropagationisdominatedbyEr×Bφdrift.Theenhancementofpoloidalcoherenceaccompaniesthefluctuationsuppression,whichsuggeststhesubtlevariationofturbulencefeatures.

  • 标签: 等离子体 TOKAMAK 封闭磁通面
  • 简介:Inthisstudy,weinvestigatetheinfluenceofdopingonthechargetransferanddevicecharacteristicsparametersinthebulkheterojunctionsolarcellsbasedonpoly(3-hexylthiophene)(P3HT)andamethanofuUerenederivative(PCBM).Organicsemiconductorsarealsoknowntobenotpureandtheyhavedefectsandimpurities,someofthemarebeingchargedandactasp-typeorn-typedopants.Calculationsofthesolarcellcharacteristicsparametersversusthep-dopinglevelhavebeendoneatthreedifferentn-dopings(N_d)thatconsistof5×10~(17)cm~(-3),10~(18)cm~(-3),and5×10~(18)cm~(-3).Weperformtheanalysisofthedopingconcentrationthroughthedrift-diffusionmodel,andcalculatethecurrentandvoltagedopingdependency.Wefindthatatthreedifferentn-dopantlevels,optimump-typedopingisaboutN_p=6×10~(18)cm~(-3).Simulationresultshaveshownthatbyincreasingdopinglevel,V_(oc)monotonicallyincreasesbydoping.CellefficiencyreachesitsmaximumatsomewhathigherdopingasFFhasitspeakatN_p=3×10~(18)cm~(-3).Moreover,thispaperdemonstratesthattheoptimumvalueforthep-dopingisaboutN_p=6×10~(18)cm~(-3)andoptimumvalueforn-dopantisN_d=10~(18)cm~(-3),respectively.Thesimulatedresultsconfirmthatdopingconsiderablyaffectstheperformanceoforganicsolarcells.

  • 标签: 有机太阳能电池 掺杂剂 异质结 聚合物 基质材料 模拟
  • 简介:Theefficiencyofthepoly(3-hexylthiophene)(P3HT)and[6,6]-phenylC61-butyricacidmethylester(PC61BM)basedorganicsolarcellswasenhancedbyusing1,2,4-trichlorobenzene(TCB)asaprocessingadditivetocontroltheblendmorphology.TheadditionofTCBimprovedthearrangementofP3HTwhichresultedingoodphaseseparatedblendfilms.Correspondingly,theoptimizedsolarcellsshowedapowerconversionefficiency(PCE)of4.17%withafillfactor(FF)of0.69,whichwerehigherthanthoseofcommonthermalannealingdevices(PCE3.84%,FF0.67).Theefficiencywasfurtherimprovedto4.74%bythermalannealingat150°Cfor10minwithahigherFFof0.74.

  • 标签: 器官的太阳能电池 CRYSTALLINITY 添加剂 形态学
  • 简介:一系列1-[2-(2-methoxyphenylthio)本甲基]-4-arylpiperazines衍生物基于5-HT1A/SSRI药设计策略被设计并且综合。综合混合物为他们的双5-HT1A/5-HTT活动被评估。

  • 标签: 抗抑郁药 药物合成 芳基哌嗪 杀螨好
  • 简介:一系列1-(N-(2-(2-methoxyphenylthio)本甲基)-N-methylamino-3-aryloxypropan-2-ols衍生物基于5-HT1A/SSRI药设计策略被设计并且综合。综合混合物为他们的双5-HT1A/5-HTT活动被评估。

  • 标签: 抗抑郁药 药物合成 杀螨好 5-羟色胺