简介:改进a-tricalcium磷酸盐(伪-TCP)的成骨能力骨头水泥,新奇BMP/伪-TCP合成骨头水泥被准备。由测量设定的时间和压缩力量,骨头水泥的水和特征被评估。包括组织学的观察,X光线照相术的调查以及数字图象分析的动物实验在BMP,a-TCP骨头水泥和BMP/之中揭示成骨能力的差别伪-TCP合成骨头水泥。结果证明伪-TCP骨头水泥拥有优秀水和和背景性质以及高机械的性质。比较实验证明BMP/伪-TCP合成骨头水泥有一个更强壮的成骨能力。implant地点的粗野观察不展出任何发炎或坏死。组织学的分析表明材料与主人骨头,和新骨头形成有好osteointegration在材料以内被检测,它正在降级。强壮的成骨能力合成由于不仅优秀osteoconductive潜力而且活跃BMP释放和材料降级贡献的osteoinductive潜力。大颅骨缺点能由充满BMP/伪-TCP合成骨头水泥是愈合得好的。这新奇材料证明自己是一可吸收并且有一个成骨能力的bioactive骨头水泥。关键词伪-tricalcium磷酸盐(伪-TCP)-骨头形态基因的蛋白质(BMP)-骨头水泥-成骨-osteoinductivity-骨头织物工程为中国(2002123)的教育部的突出的年轻教师由863高技术研究和中国(2002AA326080)和资金的发展节目资助了
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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.
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.
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.