简介:为实现多光谱TDICCD的高速高信噪比成像,利用可空间应用的多光谱TDICCD传感器研制出了高性能成像电路系统。该系统以现场可编程门阵列(FPGA)为核心逻辑单元,带有RS422外围通信控制接口,并采用CAMERALINK接口输出图像数据。系统具有动态推扫成像的能力,可同时输出全色和彩色两种模式的图像数据。利用灰度条纹的靶标对传感器的3个多光谱(R、G、B)感光区标定白平衡,利用彩色条纹的靶标对系统进行成像测试,在驱动频率为15MHz的情况下,系统单片CCD输出的图像数据率达到1.2Gbps。试验结果表明,获取全色图像的信噪比达到了53.56dB,各多光谱图像的信噪比较高的也在40dB以上,满足空间对地高分辨多光谱遥感成像的技术指标要求,对高速空间多光谱遥感相机的研制具有借鉴意义。
简介:Lithium-aluminum-cobalt-nickeloxideLiAlxCoyNi1xyO2particles,generallyusedascathodeoflithiumbattery,werepreparedbychemicalcoprecipitationfromanaqueoussolutionofLiOH,Al(NO3)3,Co(NO3)2andNi(NO3)2withNH4OH.XRD,SEMandFTIRwereusedtoexaminetheeffectofnickelcontentontheproduct.FTIRpatternsshowedthatincreaseinnickelcontentdecreasedtheabsorptionstrengthofthepeakofspinelstructureoftheproduct,attributedtotheoccupationbynickelinthealuminumsites.Particlesizeandelectricalpropertiesofthelithium-aluminum-cobalt-nickeloxide(abbreviatedasLACNO)particleswerealsodetermined.
简介:在计算机化的断层摄影术(CT)的高变细的导致目标的streaking和阴影人工制品有点被连接到X光检查设计数据的不合身的衣服到氡变换的范围空间。这件不合身的衣服主要由于变硬的横梁是为多色的来源不可避免的设计数据的因素。在处理横梁变硬导致streaking和阴影人工制品的主要困难来自它取决于高变细目标的几何学的高度非线性的性质。在这个工作,我们从设计数据的结构调查那些streaking和阴影人工制品的数学特征。我们也建议了金属由合并非线性的变硬横梁的修正者的最近的技术的人工制品减小方法。数字模拟证明没有改变背景图象,建议方法有效地减轻streaking人工制品。
简介:SomecharacterizationsoftheconditionalexpectationoperatorsonLebesgue-BochnerspacesL_p(μ,X)aregiven,where1≤p<∞,p≠2.AlsoanexampleisgiventoshowthatthecharacterizationsoftheconditionalexpectationoperatorsonL_p(μ,X)aredifferentfromthatonL_p(μ)_zFinally,arepresentationoftheconstant-preservingcontractiveprojectiononspacesL_p(μ,X)isgotwhen0
简介:X-γradiationbelongtotheionizingradiation.Ionizingradiationsinkstoenergyinorganismbutproduceadisservicetotheorganism.Justasmedicine,thedisserviceoftheradiationtowardsOrganismisdecidedbytoacceptradiationquantify,theradiationquantifywasnameddose.Radiationprotection'sbasicmissionsistowanttoresultthedosetofixquantify.InthissurveythedoseatworkplaceanditssurroundingsenvironmentsofHL-2Adevicewasmeasuredandtheassessmentwasgivenout.
简介:Itiswellknownthateveryprimeidealminimaloveraz-idealisalsoaz-ideal.TheconverseisalsowellknowninC(X).ThuswheneverIisanidealinC(X),thenI~(1/2)isaz-idealifandonlyifIis,inwhichcaseI~(1/2)=I.Weshowthesamefactforz~o-idealsandthenitturnsoutthatthesumofaprimaryidealandaz-ideal(z~o-ideal)inC(X)whicharenotinachainisaprimez-ideal(z~o-ideal).Wealsoshowthateverydecomposablez-ideal(z~o-ideal)inC(X)istheintersectionofafinitenumberofprimez-ideals(z~o-ideal).Somecounter-examplesingeneralringsandsomecharacterizationsforthelargest(smallest)z-idealandz~o-idealcontainedin(containing)anidealaregiven.
简介:SmallangleX-rayscatteringexperimentshavebeenperformedtostudythemicrostructureofmessoporoussilicameterialspreparedbycondensationoftetraethylorthosilicateusingnonionicalkylpolyethyleneoxide(AEO9)andioniccetyltrimethylammoniumbromide(CTAB)surfactantastemplates.Itistheporeswithinthenanometrerangethatproducethemaincattering.ThescatteringofthepuresilicasystemsobeyPorod’slaw.Thismaybebecausethetemplatesproducesomeadditionalscatteringbackgroundandthenmakethescatteringofporesdistorted.TheresultsshowthatthefullremovaloftemplatesfromtheporesofthematerialsbySoxhletextractionisveryeasyforAEO9,butitisdifficultforCTAB.Thepositivedeviationcorrectionisalsoperfromed.
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简介:ThispaperresentsanewX-rayimagingmethodswingLaminography(SL)thatissuitalbletoperformnon-destructivetestingontheslender-shapedmulti-layersamples.ComputersimulationsaremadetocomparethelimitedprojectionsinSLandtheprincipleofchoosingOptimalProjectionAngularRegion(OPAR)isdiscussed.Theexperimentonatwo-layerPrintedCircuitsBoardshowsthatSLwith120°swinganglesdistributedinOPARcangettheseparatedimagesofeachlayer.
简介:Energylevels,radiativerates,oscillatorstrengthsandlinestrengthsarereportedfortransitionsamongthelowest97levelsofthe(1s22s22p6)3s23p2,3s23p3d,3s3p3,3p4,3s3p23d,and3s23d2configurationsofRbXXIV.AmulticonfigurationDirac–Fock(MCDF)methodisadoptedforthecalculations.Radiativerates,oscillatorstrengths,andlinestrengthsareprovidedforallelectricdipole(E1),magneticdipole(M1),electricquadrupole(E2),andmagneticquadrupole(M2)transitionsfromthegroundleveltoall97levels,althoughcalculationsareperformedforamuchlargernumberoflevels.Toachievetheaccuracyofthedata,comparisonsareprovidedwithsimilardataobtainedfromtheFlexibleAtomicCode(FAC)andalsowiththeavailabletheoreticalandexperimentalresults.Ourenergylevelsarefoundtobeaccuratetobetterthan1.2%.WavelengthscalculatedarefoundtolieinEUV(extremeultraviolet)andx-rayregions.Additionally,lifetimesforall97levelsareobtainedforthefirsttime.