简介：AseriesofnovelAgCl/Ag2CO3heterostructuredphotocatalystswithdifferentAgClcontents（5wt%,10wt%,20wt%,and30wt%）werepreparedbyfacilecoprecipitationmethodatroomtemperature.TheresultingproductswerecharacterizedbypowderX-raydiffraction（XRD）,scanningelectronmicroscopy（SEM）,X-rayphotoelectronspectroscopy（XPS）,andultraviolet–visiblediffusereflectancespectroscopy（UV–VisDRS）,respectively.Thephotocatalyticactivityofthesampleswasevaluatedbyphotocatalyticdegradationofmethylorange（MO）underUVlightirradiation.WiththeoptimalAgClcontentof20wt%,theAgCl/Ag2CO3compositeexhibitsthegreatestenhancementinphotocatalyticdegradationefficiency.Itsfirst-orderreactionrateconstant（0.67h-1）is5.2timesfasterthanthatofAg2CO3（0.13h-1）,and16.8timesfasterthanthatofAgCl（0.04h-1）.TheformationofAgCl/Ag2CO3heterostructurecouldeffectivelysuppresstherecombinationofthephoto-generatedelectronandhole,resultinginanincreaseinphotocatalyticactivity.

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简介：TheannealingbehaviorofAgnanoparticlesinsilicawithandwithoutdefectswasinvestigatedinthisstudy.SilicasampleswithandwithoutArionpre-irradiationwereimplantedwithAgionsandthenannealedattemperaturefrom300to850℃.UV-VISspectroscopyandTEMwereusedtocharacterizetheopticalabsorbancepropertyandsizedistributionofAgnanoparticles,respectively.OpticalabsorbanceresultsshowthattheabsorbanceintensityofSPR(SurfacePlasmonResonance,SPR)peakfromAgnanoparticlesinthesamplewithpre-irradiationisstrongerthaninthesamplewithoutpre-irradiation,whichindicatesthatthedefectsproducedbypre-irradiationpromptthenucleationofAgnanoparticles.Duringannealing,theSPRpeakshiftstoshortwavelengthdirection,asshowninFig.1.

简介：Inordertodeepentheunderstandingoftherelationshipbetweenfundamentalproperties（including:microstructureandcomposition）andphotocatalyticperformance,fourbismuthatecompounds,including:LiBiO3,NaBiO3,KBiO3,andAgBiO3,areregardedasresearchexamplesinthepresentwork,becausetheyhaveparticularcrystalstructuresandsimilarcompositions.Usingdensityfunctionaltheorycalculations,theirstructural,electronic,andopticalpropertiesareinvestigatedandcomparedsystematically.Firstofall,thecalculatedresultsofcrystalstructuresandopticalpropertiesareinagreementwithavailablepublishedexperimentaldata.Basedonthecalculatedresults,itisfoundthatthetunneledorlayeredmicro-structuralpropertiesleadtothestrongerinteractionbetweenbismuthandoxygen,andtheweakerinteractionbetweenalkaline-earthmetaland[BiO6]octahedron,resultinginthefeatureofmulti-bandgapsinthecasesofLiBiO3,NaBiO3,andKBiO3.ThisconclusionissupportedbythecaseofAgBiO3,inwhichthefeatureofmulti-bandgapsdisappears,duetothestrongerinteractionbetweenthenoblemetaland[BiO6]octahedron.Thesepropertieshavesignificantadvantagesinthephotocatalyticperformance:absorbinglowenergyphotons,rapidlytransferringenergycarriers.Furthermore,thefeaturesofelectronicstructuresofbismuthatecompoundsarewellreflectedbytheabsorptionspectra,whichcouldbeconfirmedbyexperimentalmeasurementsinpractice.Combinedwiththecalculatedresults,itcouldbeconsideredthatthecrystalstructuresandcompositionsofthephotocatalystdeterminetheelectronicstructuresandopticalproperties,andsubsequentlydeterminethecorrespondingphotocatalyticperformance.Thus,anovelBi-basedphotocatalystdrivenbyvisible-lightcouldbedesignedbyutilizingspecificcompositionstoformfavorableelectronicstructuresorspecificmicro-structurestoformabeneficialchannelforenergycarriers.

简介：Cracksmayeasilyoccurinthefusionweldbetweenvanadiumalloysandstainlesssteelduetothebrittleintermetallicsandweldingstress.Thehighvacuumelectronbeambraze-weldinghasbeensuccessfullyusedtojoinvanadiumalloy(V-5Cr-5Ti)tostainlesssteel(HR-2)withelectroplatedCuandAgcoating.Toinvestigatetheeffectsofelectroplatedcoatingontheweldability,thejointappearance,themicrostructureandthemechanicalpropertiesofthejointshavebeenthoroughlyanalyzed.Theresultsshowthatthejointsurfaceconfigurationwasgoodandrootreinforcementwasfullandsmooth.Areactionzone(RZ)wasgainedontheinterfacebetweentheVSCrSTialloyandHR-2stainlesssteelbasemetals.Thewidthofreactionzoneatthetopofthejointwasupto0.65mm,widerthanthatinthebottomofthejoint(0.46mm).Thereactionzoneconsistedofconsiderablysmallerdendriticstructureswithanaveragegrainsizeoflessthan10μm.ElementAgandCualmostenrichedtheinterfacebetweenV-5Cr-5TialloysubstrateandRZ,servingasaphysicalbarrierwhichdecreasesoravoidstheformationofintermetallics.Themaximumtensilestrengthofvanadiumalloy/stainlesssteeldissimilaralloyjointwasmorethan300MPa.Thejointwasdefectsfree.

简介：为了满足透明导电薄膜轻便、可折叠、高分辨率及快速响应的需求,在AZO单层透明导电薄膜研究基础上,尝试在柔性PET衬底上制备AZO/Ag/AZO三层透明导电薄膜。先利用光学薄膜设计软件对膜系进行设计优化,再参照此优化值制备研究不同AZO、Ag层对AZO/Ag/AZO薄膜光电性能的影响。通过合理的实验设计与对比,发现在柔性PET衬底上制备的三层AZO薄膜与在硬质衬底上制备的薄膜光电性能相当,且当三层AZO/Ag/AZO薄膜中AZO层厚度在40-45nm,Ag层厚度8nm时,在可见光波段的透过率高达到92%,电阻率低至4.0×10-（-5）Ω·cm,透明导电薄膜的品质因子最高为12.6×10-（-2）Ω-（-1）。得到的AZO/Ag/AZO三层透明导电薄膜具有与常见的ITO薄膜相比拟的性能。

简介：摘要目的比较自制药纱（金银花、黄连、当归、党参、冰片、蜂蜡）与SD-Ag（磺胺嘧啶银）霜治疗中小面积浅度烧伤创面的疗效。方法随机选择120例烧伤病例；62例烧伤创面采用自制药纱（治疗组），61例采用SD-Ag霜治疗（对照组），观察两组烧伤病人深Ⅱ度以内烧伤创面的愈合时间感染及瘢痕发生率。结果治疗组创面愈合时间、感染率及瘢痕发生率均明显低于对照组。结论自制药纱作用优于SD-Ag霜。

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简介：研究了银包覆和银-碳复合包覆对硅的结构和电化学性能的影响。采用XRD和TEM等手段分析了样品的结构和形貌，并采用恒电流充放电测试、循环伏安法和电化学阻抗法研究了改性处理前后硅负极的电化学性能。结果表明，硅/Ag/碳复合负极材料中，Ag纳米微粒以晶体的形式分布在硅颗粒的表面，一层无定形沥青炭包覆在硅/Ag复合颗粒的表面，这有利于提高硅颗粒的结构稳定性。电化学测试表明，与硅相比，硅/Ag/炭复合负极材料的电化学阻抗减小，电化学极化减弱，电化学反应的可逆性和循环寿命显著提高，第40次循环的比容量保持在390mAhg-1。

简介：南京工业大学,是国内的一所综合性高校,而且是拥有国内顶级女子垒球队的一所高校。这所高校的女子垒球队是国家级的运动队,平日拿了不少的好成绩。我作为大学老师,主要负责我们学校的宣传工作。当然,拍摄各种小片、会议、宣传片,都是不可少的工作内容。

简介：作为国务院立项批复的三个大飞机项目之一,AG600飞机借国务院办公厅《关于促进通用航空业发展的指导意见》的出台,及通用航空作为国家战略性新兴产业而重点扶持的东风,以集成创新为手段,立足国内通用航空发展现有基础,实现数字化管理,建立产品集成创新体系。同时,AG600研制所采用的新技术、新材料、新工艺对我国经济和科技发展、基础学科进步及航空强国建设具有重要的带动辐射作用,带动了国内一批民用航空装备制造业企业发展,在我国民机产业发展中具有里程碑的意义。

简介：Afacilestep-by-stepapproachisdevelopedforsynthesizingthehigh-efficiencyandmagneticrecyclableFe_3O_4@SiO_2@Ag@Nitrepang-likenanocomposites.ThismethodinvolvescoatingFe_2O_3nanorodswithauniformsilicalayer,reductionin10%H_2/AratmospheretotransformtheFe_2O_3intomagneticFe_3O_4,andfinallydepositingAg@Nicore-shellnanoparticlesontheL-lysinemodifiedsurfaceofFe_3O_4@SiO_2nanorods.Thefabricatednanocompositesarefurthercharacterizedbyx-raydiffraction,transmissionelectronmicroscopy,scanningelectronmicroscope,Fouriertransforminfraredspectroscopy,andinductivelycoupledplasmamassspectroscopy.TheFe_3O_4@SiO_2@Ag@Nitrepang-likenanocompositesexhibitremarkablyhighercatalyticefficiencythanmonometallicFe_3O_4@SiO_2@AgnanocompositestowardthedegradationofRhodamineB(RhB)atroomtemperature,andmaintainsuperiorcatalyticactivityevenaftersixcycles.Inaddition,thesesamplescouldbeeasilyseparatedfromthecatalyticsystembyanexternalmagnetandreused,whichshowsgreatpotentialapplicationsintreatingwastewater.

简介：WeperformedasystematictraceandrareearthelementanalysisforthebeddedFe-MncarbonaterocksrelatedtothestratiformAg-Pb-ZnmineralizationintheLengshuikengoredistrict,JiangxiProvince,SouthChina.ThreetypesofFe-Mncarbonatesaredistinguished,namely,themassive,breccia,andveintypes.Bothcarbonateandsilicatefractionsinthesamplesareanalyzedfortheirtraceandrareearthelementconcentrationsusingastepacid-leachingtechnique.OurresultsshowthatthecarbonatefractionsinthemassivetypesampleshavethelowestREEconcentrationsbutpronouncedpositiveEuandYanomalieswithEu/Eu*valuefrom1.3to6.2andY/Hovaluefrom40.1to59.5,andsimilarcharacteristicsarealsoshownforthesilicatefractionsinthemassivetypesamples(Eu/Eu*=1.0–6.7,Y/Ho=20.7–55.1).TheseREEcharacteristicsaresimilartothoseofSedextypemassivesulfidedepositsworldwide,andwesuggestthatthemassivetypeFe-Mncarbonaterockswerelikelyformedfromanexhalativevolcanic-hydrothermalfluidfeedingthedepressionbasinofavolcaniclake.Thehighconcentrationsofredox-sensitiveelementsandratiossuchasU/Th,V/CrandV/(V+Ni)indicateadysoxicenvironmentfortheFe-Mncarbonatedeposition.Incontrast,thebrecciatypeandveintypeFe-Mncarbonatesamplesshowdifferenttraceandrareearthelementfeaturesfromthoseofmassivetypesamples,andtheyaremoresimilartothevolcanicrocksandmagmatic-hydrothermalfluidsintheLengshuikengoredistrictandmayreflectstrongoverprintingfromvolcanicandsub-volcanicmagmatismrelatedtotheporphyrytypemineralizationinthedistrict.