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81 个结果
  • 简介:Graphene由于它的非凡的物理、化学的性质在许多应用与大潜力作为新碳nanoform出现了。特别,graphene和它的衍生物也作为新部件在生物医学的领域里正在获得很多兴趣为生物传感器,织物工程,和药交货。这评论介绍graphene,graphene的简历效果和它的衍生物的唯一的性质,特别和房间的他们的相互作用和为癌症诊断和治疗的基于graphene的生物传感器和nanomedicines的发展。

  • 标签: 细胞生物学 石墨 基础 生物传感器 设备 化学性质
  • 简介:Hepatoma房间(Hepg2s)在氢氧根上有教养的同样典型的癌症房间(哦)并且甲基(CH3)组表面被显示展出不同增长和词法变化。Hepg2s房间在上哦表面在CH3表面上比那些更快成长了。Hepg2s房间在上哦表面有更大的接触区域和更多的弄平的形态学,当那些在CH3表面上展出了更小的接触时,区域和更多绕行形态学。在7天文化以后,进CH3表面上的簇的Hepg2s房间的迁居在OH表面上比那慢显著地表现了。这些化学上修改的表面在增长,粘附,和移植上展出了Hepg2s房间的规定,提供肝癌症的潜在的治疗。

  • 标签: 表面化学 细胞增殖 肝癌细胞 微控制 接触面积 细胞迁移
  • 简介:作为结构的材料,靠近房间的铝泡沫与开的房间铝泡沫相比在产品尺寸,力量和过程经济拥有明显的优点。作为一种结构功能集成材料,靠近房间的铝泡沫的申请由于声波穿入的困难在声学的领域里极大地被限制了。有宏观结构的靠近房间的泡沫在声波的繁殖上有重要效果,这被报导。迄今为止,在宏观结构之间的关系和商业地纯的靠近房间的铝泡沫的声学的性质是模糊的。在这个工作,不同穿孔和空气差距类型为改变泡沫的宏观结构被设计。同时,健全吸收系数和健全减小索引上的宏观结构的效果被调查。结果证明有一半洞的泡沫在高频率范围展出了优秀健全吸收和健全屏蔽行为(>2500?Hz)。另外,没有空气差距,有空气差距的标本与泡沫相比在低频率显示出好健全吸收性质。基于实验结果,繁殖在有不同宏观结构的商业地纯的靠近房间的铝泡沫的声波的结构的模型被造,声学的性质上的宏观结构的影响被讨论。

  • 标签: 靠近房间的铝泡沫 鸣吸收 鸣屏蔽 宏观结构
  • 简介:GliomacelllineC6culturedonsiliconsurfacesmodifiedbydifferentchemicalfunctionalgroups,includingmercapto(-SH),carboxyl(-COOH),amino(-NH2),hydroxyl(-OH)andmethyl(-CH3)groups,wasstudiedheretoinvestigatetheinfluenceofsurfacechemistryonthecellproliferation,adhesionandapoptosis.AFMconfirmedthesimilarcharacteristicofdifferentfunctionalgroupsoccupation.TheadheringC6exhibitedmorphologicalchangesinresponsetodifferentchemicalfunctionalgroups.TheC6adheredto-COOH,-NH2,-OHand-CH3surfacesandflattenedmorphology,whilethoseon-SHsurfaceexhibitedthesmallestcontactareawithmostlyroundedmorphology,whichledtothedeathofcancercells.TheresultsofMTTassayshowedthatthe-COOHand-NH2groupspromotedceilproliferation,whilethe-SHsignificantlyinhibitedtheproliferation.Comparedwithotherchemicalfunctionalgroups,the-SHgroupexhibiteditsuniqueeffectonthefateofcancercells,whichmightprovidemeansforthedesignofbiomaterialstopreventandtreatglioma.

  • 标签: GLIOMA cell line C6 CHEMICAL FUNCTIONAL
  • 简介:Thepresentworkshowsdrug-carrierinteractions,releasebehaviorsandcellresponsesofhydroxyapatite(HA)containingsalvianolicacidB(SalB),astragaluspolysaccharide(APS),andnaringin.X-raydiffraction(XRD)showedthatthecrystallinityandcrystalsizeofHAdecreasedsignificantlywhenSalBwasadded(p<0.05).Transmissionelectronmicroscope(TEM)confirmedthatthenano-acicularcrystalsofHAcontainingSalBwerethemostfineamongallspecimens.ItwasconjecturedthatSalBpreferentiallyadsorbedonthepositivelychargedsurfaceofHAcrystalstoinhibittheirgrowth.InvitroreleaseofHAcontainingChinesemedicinesfollowedthefirst-orderequation.Thedrug-carrieraffinitybetweenHAandSalBmighthaveprolongedthereleaseofSalB.TheproliferationanddifferentiationofosteoblastswerepromotedbyChinesemedicinescontainingHAinthetimeanddosagedependentmanner.Theosteoblastsdisplayedapolygonalmorphologywithcell-celljunctionsinallcases.ItissuggestedthatthecontainedChinesemedicineswouldpromotetheactivitiesoftheosteoblasts.

  • 标签: 药物载体 羟基磷灰石 细胞反应 相互作用 释放行为 透射电子显微镜
  • 简介:Inducedembryonicstemresourcesfortheobservationofthecell(ES)cellsareexpectedtobepromisingcellbehaviorsindevelopmentalbiologyaswellastheimplantationincelltreatmentsinhumandiseases.ArecombinantE-cadherinsubstratumwasdevelopedasacellrecognizablesubstratumtomaintaintheEScells'self-renewalandpluripotencyatsinglecelllevel.Furthermore,thegenerationofvariouscelllineagesindifferentgermlayers,includinghepaticorneuralcells,wasachievedonthechimericproteinlayerpreciselyandeffectively.Theinductionandisolationofspecificcellpopulationwascarriedoutwiththeenhancingeffectofotherartificialextracellularmatrices(ECMs)inenzyme-freeprocess.ThemurineEScell-derivedcellsshowedhighlymorphologicalsimilaritiesandfunctionalexpressionstomaturedhepatocytesorneuralprogenitorcells.

  • 标签: CELL adhesion molecule EMBRYONIC stem CELL
  • 简介:Thecounterelectrode(CE)prominenceindye-sensitizedsolarcells(DSSCs)isundisputedwithresearchgearedtowardsreplacementofPtwithviablesubstituteswithexceptionalconductivityandcatalyticactivity.Herein,wereportthereplaceableCEwithbetterperformancethanthatofPt-basedelectrode.ThechemistrybetweenthegrapheneoxideandicetemplatesleadstocellularformationofreducedgrapheneoxidethatachievesgreaterconductivitytotheCE.Thesimultaneousgrowthofactiveedge-orientedMoS2ontheCEthroughCVDpossesseshighreflectivity.HighreflectiveMoS2trendstoincreasetheelectroactivitybyabsorbingmorephotonsfromthesourcetodyemolecules.Thus,thesynergisticeffectoftwomaterialswasfoundtoshowcasebetterphotovoltaicperformanceof7.6%against7.3%fortraditionalplatinumCE.

  • 标签: DYE-SENSITIZED solar cell GRAPHENE oxide molybdenum
  • 简介:Anitrate-citratecombustionroutetosynthesizeLa0.9Sr0.1Ga0.8Mg0.2O3-δpowderforsolidoxidefuelcellapplicationwaspresented.Thisrouteisbasedonthegellingofnitratesolutionsbytheadditionofcitricacidandammoniumhydroxide,followedbyanintensecombustionprocessduetoanexothermicredoxreactionbetweennitrateandcitrateions.TheoptimumtechnicalparametersarethatthepHvalueis5,andthemolarratioofcitricacidtothetotalmetallicionis1.5:1.X-raydiffractioncharacterizationofcalcinedgelshowsthatpurephasewassynthesizedaftercalcinationat1400℃for10h,andtheTEMresultshowsthecalcinedpowderwithaverageparticlesizeisabout150nm.Thegrainresistancecontributestothetotalresistanceofsinteredpelletbelow500℃.Theconductivityofthesinteredpellentat800℃was0.07S-1.cm-1higherthantheconductivityofYSZ(0.05S-1.cm-1at800℃)

  • 标签: La0.9Sr0.1Ga0.8Mg0.2O3-δ 固体氧化物燃料电池 工艺路线 硝酸盐 柠檬酸盐 合成
  • 简介:Layeredcathodematerialsofhigh-temperaturelithiumbatteries,LiNi1/3Mn1/3Co1/3O2aresynthesizedbyasol-gelmethodwithvariationinfinalsinteringtemperatureforboreholeapplications.Thestructure,morphologyandhigh-temperaturedischargeperformanceoftheseresultingproductsareinvestigatedbyX-RayDiffraction(XRD),scanningelectronmicroscopy(SEM),laserparticlesizeanalysis,galvanostaticandpulsedischarge.Theresultsofstructuralanalysisindicatethatthesamplesinteredat800℃hasthecharacteristicsofgoodcrystallinity,narrowsizedistributionandlargespecificsurfaceareaatthesametime.Thedischargeexperimentsalsoindicatethatthissamplehasthebestelectrochemicalproperties,withthemaximumdischargecapacitiesof314.57and434.14mAh·g-1at200and300℃respectivelyandtheminimumcellinternalresistancesatbothtemperatures.

  • 标签: SINTERING TEMPERATURE ELECTROCHEMICAL properties Li Ni1/3Mn1/3Co1/3O2
  • 简介:Anovelfluorescentprobe9-(4-(1,2-diamine)benzene-N1-phenyl)acridine(DABPA)wassynthesizedforthedetectionofnitricoxide(NO)andcharacterizedbyIR,1H-NMRandEI-MSspectroscopy.Basedonaphotoelectrontransfermechanism,thefluorescenceintensitiesofDABPAwereinvestigatedwiththedifferentconcentrationsofNO.Undertheoptimalexperimentalconditions,thefluorescenceintensityofDABPAhadagoodlinearrelationship(R2=0.9977)withNOconcentrationintherangefrom1×10-7to1.5×10-6mol/Lwithadetectionlimitof1×10-8mol/L.ThecytotoxicityinducedbyDABPAwasevaluatedbytheMTT(3-(4,5-dimethylthiazol-2-yl)-2,5diphenyltetrazoliumbromide)assayforbiologicalapplication.Furthermore,theprobeDABPAhadalsobeensuccessfullyappliedtoreal-timeimageNOproducedinPC12cellsinthepresenceofL-arginine.

  • 标签: 荧光探针 一氧化氮 苯基 二胺 氮测定 最佳实验条件
  • 简介:One-dimensional(1D)nanomaterialsandnanostructureshavereceivedmuchattentionduetotheirpotentialinterestforunderstandingfundamentalphysicalconceptsandforapplicationsinconstructingnanoscaleelectricandoptoelectronicdevices.Zincsulfide(ZnS)isanimportantsemiconductorcompoundofII-VIgroup,andthesynthesisof1DZnSnanomaterialsandnanostructureshasbeenofgrowinginterestowingtotheirpromisingapplicationinnanoscaleoptoelectronicdevices.Thispaperreviewstherecentprogresson1DZnSnanomaterialsandnanostructures,includingnanowires,nanowirearrays,nanorods,nanobeltsornanoribbons,nanocables,andhierarchicalnanostructuresetc.Thisarticlebeginswithasurveyofvariousmethodsthathavebeendevelopedforgenerating1Dnanomaterialsandnanostructures,andthenmainlyfocusesonstructures,synthesis,characterization,formationmechanismsandopticalpropertytuning,andluminescencemechanismsof1DZnSnanomaterialsandnanostructures.Finally,thisreviewconcludeswithpersonalviewstowardsfutureresearchon1DZnSnanomaterialsandnanostructures.

  • 标签: 纳米材料 一维结构 硫化锌 纳米结构