简介：这篇文章介绍一条灵巧的途径给聚苯乙烯/银(PS/Ag)的准备不对称的混合粒子。在这个方法，polystyrene/polyglycidylmethacrylate(PS/PGMA)Janus粒子经由dichloromethane(DCM)的蒸发从PS/PGMA/DCM-in水乳剂微滴触发的内部阶段分离被综合。然后，Janus粒子是aminated并且顺序获得PS/PGMA-NH2和PS/PGMA-COOH粒子的carboxylated。在由与amine/carboxyl协调的functionalizedPS/PGMA粒子的PGMA半球的表面上自我装配的Ag+。有Ag的7.29wt%的PS/Ag不对称的混合粒子被Ag+的减小获得。扫描电子显微镜学，精力散的X光检查光谱学和传播电子显微镜学结果证实Ag在聚合物粒子的表面上是不均匀地分布式的。

简介：摘要目的探讨乙肝病毒前S1抗原（Pre-S1Ag）与HBV血清标志物（HBVM）同步检测的临床价值。方法对确诊的380例乙肝病例空腹抽血，采用ELISA法及HAMILTN全自动酶联免疫分析仪同步检测Pre-S1Ag与HBVM（HBsAg、抗-HBs、HBeAg、抗-HBe、抗-HBc），并对结果进行比较分析。统计学处理采用χ2检验。结果统计显示PreS1Ag的检出率HBsAg、HBeAg、HBcAb阳性组（78.8%）明显高于HBsAg、HBeAb、HBcAb阳性组（41.6%），差异有显著性（χ2=21.04，P＜0.01）；HBsAg、HBeAg阳性组PreS1Ag阳性率（79.3%）明显高于HBsAg、HBcAb阳性组（25.3%），提示HBeAg阳性组中PreS1Ag阳性率明显高于HBeAg阴组，差异有显著性(χ2=21.49，P＜0.01)；提示PreS1Ag是一个与HBeAg同时存在的较好指标。结论前S1抗原与病毒复制有关，与HBeAg具有一致性；与HBVM同步检测，可减少和避免HBeAg系统发生变异所致的假阴性对临床的误导。

简介：ZnOnanowiresdepositedonSisubstrateswerepreparedbythermalevaporationofamixtureofZnOandcarbonpowder.Agionswithanenergyof63keVandadoseof5×1015ions/cm-2wereimplantedintotheas-preparedZnOnanowires.Afterionimplantation,theAg-implantedZnOnanowireswereannealedinairatdifferenttemperaturesfrom600℃to1000℃.Effectsofionimplantationandthermalannealingonthestructuralandphotoluminescent(PL)propertiesoftheZnOnanowireswereinvestigatedbytransmissionelectronmicroscopy(TEM),selectedareaenergydispersiveX-rayspectroscopy(SAEDX),X-raydiffraction(XRD),andfluorescencespectrophotometry.TEM,HR-TEM,andSAEDXanalysesdemonstratedthatefficientdopingofAgwasachievedbyionimplantationandthesubsequentannealingprocess.XRDpatternsrevealedthatthehexagonalwurtzitestructureofZnOnanowireswasmaintainedafterionimplantation.PhotoluminescentemissionsofZnOnanowiresweredecreasedsignificantlybyAgimplantationbutcouldberecoveredbythermalannealing.ThemechanismoftheinfluenceofionimplantationandannealingonthePLintensitywasassessed.

简介：COandformaldehyde(HCHO)oxidationreactionswereinvestigatedovermesoporousAg/Co3O4catalystspreparedbyone-pot(OP)andimpregnation(IM)methods.Itwasfoundthattheone-potmethodwassuperiortotheimpregnationmethodforsynthesizingAg/Co3O4catalystswithhighactivityforbothreactions.ItwasalsofoundthatthecatalyticbehaviorofmesoporousCo3O4andAg/Co3O4catalystsforthebothreactionswasdifferent.AndtheadditionofsilveronmesoporousCo3O4didnotalwaysenhancethecatalyticactivityoffinalcatalystforCOoxidationatroomtemperature(20C),butcouldsignificantlyimprovethecatalyticactivityoffinalcatalystforHCHOoxidationatlowtemperature(90C).Thehighsurfacearea,uniformporestructureandtheprettygooddispersiondegreeofthesilverparticleshouldberesponsiblefortheexcellentlow-temperatureCOoxidationactivity.However,forHCHOoxidation,theadditionofsilverplayedanimportantroleintheactivityenhancement.AndthesilverparticlesizeandthereducibilityofCo3O4shouldbeindispensableforthehighactivityofHCHOoxidationatlowtemperature.

简介：

简介：WepresentthetemperaturedependentelectricaltransportmeasurementsofAg/Si（111）-（√3×√3）R30°bytheinsitumicro-four-pointprobemethodintegratedwithscanningtunnelingmicroscopy.Thesurfacestructurecharacterizationsshowhexagonalpatternsatroomtemperature,whichsupportstheinequivalenttriangle（IET）model.Ametal-insulatortransitionoccursat-115K.Thelowtemperaturetransportmeasurementsclearlyrevealthestronglocalizationcharacteristicsoftheinsulatingphase.

简介：采用蒸发镀膜方法，在孔径约为200nm的多孔阳极氧化铝（AAO）模板上室温沉积名义厚度为300nm的银薄膜样品。研究真空退火对AA0模板上Ag纳米颗粒膜的结构和光学性质的影响。微观结构利用X射线衍射仪和扫描电镜观测，光学性质采用分光光度计检测。结果表明，（111）取向的银衍射峰强度随退火温度的升高逐渐增强，当退火温度为250oC时达到最大值：银纳米颗粒平均直经随退火温度的升高呈现先缓慢增大，后迅速增大，再减小的态势，当退火温度为250qC时达到最大值140nm，比制备态大47nm；薄膜经真空退火后，漫反射率普遍得到提高，在可见光区域，当退火温度为200oC时，漫反射率达到最大，其值为80％，大约为制备态的3倍左右。

简介：Auniformtransienttemperaturefieldmodelofelectricalcontactsoperationwasfoundbyanalyzingtheprocessofclosingarc→constrictionresistanceJouleheat→breakingarc.EssentialparametersofAg/La2NiO4electricalcontactmaterialfortransienttemperaturefieldcalculationwereobtainedthroughtestsofelectricalcontactexperimentalinstrumentunder18VDCindifferentcurrents,othercorrelationexperiments,andcalculationanalysis.Thefiniteelementmethodwasappliedtosolvethetransienttemperaturefield,andthefeaturesanddistributionofthetransienttemperaturefieldwereobtained.Theconditionofmaterialerosionandmasstransfercanbeforecastedbythosecalculationresults.ItisbeneficialtoresearchaboutthelifetimeofAg/La2NiO4electricalmaterial.