简介：CunanoclusterswereelectrochemicallydepositedonthefilmofaNafion-solubilizedmulti-wallcarbonnanotubes(CNTs)modifiedglassycarbonelectrode(CNTs-GCE),whichfabricatedaCu-CNTscompositesensor(Cu-CNTs-GCE)todetectglucosewithnon-enzyme.Thelinearrangeis7.0×10-7to3.5×10-3mol/Lwithahighsensitivityof17.76μA/(mmolL),withalowdetectionlimit2.1×10-7mol/L,fastresponsetime(within5s),goodreproducibilityandstability.

简介：Basedonageneralclassificationandcharacteristiccomparisonoftheexistingmodels,anewmodelfornon-catalyticgas-solidreactionsisproposedandageneralformulationforthemodelintermsofthesolidconversion,X,ispresentedinthispaper.Themodel,referredtothegeneralizedmodel,isdemonstratedtobeapplicabletoanysolidreactantofgeneralstructurerangingfromhighlyporoustononporousmaterials.Itisshownthatthegeneralizedmodelincorporatesthegrainandporestructureforasolidpelletandcanbereducedtothegrainandrandomporemodelsasextremecases.

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简介：非否定的矩阵因式分解(NMF)是为由把非否定性限制放在矩阵上的维数减小的一种技术。基于PARAFAC模型，NMF为三尺寸的数据被扩大分解。三尺寸的非否定的矩阵因式分解(NMF3)算法，简明、容易实现，在这篇论文被给。NMF3算法实现基于元素然而并非在向量上。没有展开，传统的算法，这能直接分解一个数据数组，它不类似于。它被用于模仿的数据数组分解并且获得了合理结果。它证明NMF3能在化学统计学为曲线分辨率被介绍。

简介：Twenty10-hydrocarbylacridonesand2-methylacridone,1-hydroxyacridoneweresynthesizedfromacridoneandcharacterizedbymp,IR,UV,1HNMRandMS.UsingNd:YAGasalasersource,thesecond-orderharmonicgeneration(SHG)valuesoftheacridonederivativesweremeasuredinpowderstateascomparedwithureapowder.TheresultsshowedthattheSHGvaluesofsomeof10-hydrocarbylacridoneswerehigherthanthatofurea,whileotherswerelower.Althoughthehydrocarbylsubstituents(R)attachedtonitrogenatomofacridoneweredifferentinsizeandelectronegativity,theyhadalittleeffectontheSHGvaluesof10-hydrocarbylacridones.Substituents,suchasmethylorhydroxygroupconnectedtothephenylring,causedalittleeffectontheSHGvalues,too,comparedwithacridone.TheabilityofRtopushelectrontowardthenitrogenatomortopullelectronfromthenitrogenatomplayanimportantroleonthemaximumwavelengthesofUV-visibleabsorptionofacridonederivatives.

简介：Insituphotochromicprocessinthemonolayerofaphotochromicspiropyranderivativewithoutlongalkylchain,wasinvestigated.Thephotochromismattheair/waterinterfaceunderdiffernetsurfacepressureswasstudiedbysurfacepressure-areaisotherms,surfacepressure-timecurves,area-timecurvesandBrewsteranglemicroscopy.Bothformsofthecompoundwerefoundtoformmonolayersattheair/waterinterfacealthouhgitdoesnothavelongalkylchain.Alargeareaexpansioninthemonolayercorrespondingtoazreo^thorderreactionwasfoundattheinitialstageoftheUVlightirradiation.Aseriesofdynamicinvestigationsrevealedthatathighpressureafterphasetransitioninthemonolayer,thesurfacepressurechangesgreatlyumderalternativeirradiationofUVandvisiblelight.Anobviousmorphologicalchangeaccompanyingwiththephotochromismwasobservedinsitu.

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简介：AlantolactoneisanaturalcompoundidentifiedfromtherootsofInulaheleniumL.thathasmultiplebio-activities.Weexamineditsinhibitoryeffectsonhumannon-smallcelllungcancer(NSCLC)A549cells.Thean-tiproliferativeeffectofalantolactoneonA549cellswasinvestigatedviaMTT[3′-(4,5dimethylthiazol-2-yl)-2,5-diphenyltetrazoliumbromide]assayanditsapoptosis-inducingeffectwasdeterminedbyHoechststainingandflowcytometry.WefoundthatalantolactonesignificantlyinhibitedtheproliferationofA549cellsandinducedmorphologicalchangestypicalforapoptosis.Flowcytometryanalysisindicatesdose-dependentcellcycleretardationatG0/G1andSstages.Theresultsindicatethatalantolactonecouldbeanattractivesmall-molecularnaturalcompoundforfurtherdevelopmentasatherapeuticdrugagainstNSCLC.

简介：Thelackofefficientandnon-toxicgenedelivery,preferablywithnon-viralDNAvectors,isgenerallyregardedasamajorlimitationforgenetherapy.Inthisstudy,awheathistoneH4genewasclonedfromTriticumaestivum,sequenced,modifiedandexpressedinE.coli.ThewheathistoneH4geneandreconstructedH4TLgeneencodedwheathistoneH4andarecombinantproteinof141aminoacidswithanapproximatemolecularweightof15500.GelelectrophoresismobilityshiftassaysdemonstratedthatthepurifiedproteinhadhighaffinityforDNA.Mostsignificantly,thecomplexofplasmidpEGFP/C1withH4TLwastransfectedwithincreasedefficiencyintoMCF-7,HO8910,LNCap,A549andHeLacellsinvitro.Theseresultsdemonstratethatthetargetingofnon-viralvectorstotumor-specificreceptorsprovidesacheap,simpleandhighlyefficienttoolforgenedelivery.

简介：Anefficientrouteforthesynthesisof5-(arylpropenylidine)-2,4,6-pyrimidinetrione3fromanappropriateα,β-unsaturatedaromaticaldehydes1andbarbituricacid2underbothnon-catalyticandsolvent-freemicrowaveirradiationconditionswasdescribed.Inthisway,arangeofbiologicallyimportantcompounds3wasobtainedingoodtoexcellentyields(86-98%)inaveryshortreactiontime(30-80s).