Preparation of Stable CaS： Eu^2＋ , Tm^3＋ Phosphor

Different fluxes were used to synthesize long persistence phosphors, calcium sulfides activated by Eu^2 and Tm^3 , by convenient solid-state method. The phosphor using NH4F as a flux has good crystallinity and large particle size, its stability against water and other atmospheric components is enhanced, and its afterglow is longer and fluorescent inten-sity is more intense than those of the phosphor using NH4Cl as flux. Their PL intensities varied with time in moist air were measured, no remarkable change was found for those prepared with NH4F flux in contrast with NH4Cl as flux. So using NH4F as flux is a good method to enhance the stability of alkaline earth sulfides.     

计算机软件CS Chem3D的计算基础及在有机化学中的应用

简要介绍计算机软件CS Chem3D的计算基础及在有机化学中的应用，帮助人们了解和使用这个软件，促进分子设计工程的发展，从而为有目的地进行化学研究提供高效、快速途径。     

Preparation of Stable CaS∶Eu~(2+), Tm~(3+) Phosphor

Alkalineearthsulfides (AES)havebeenfoundtobeexcellentandversatilephosphor ,andrareearthsasactivatorshavebeenintensivelyinvestigated[1～ 7] .Theyholdpromiseforapplicationsinphoto ,electro ,cathoderay ,fieldemissiondisplaysandluminescencepaints[8,9] .However ,alkalineearthsulfidesasaphos phorhosthavebeenfoundtobelimitedinapplica tion ,duemainlytoitssensitivetomoistureandotheratmosphericcomponents .Theirchemicalstabilityagainstatmosphericcarbondioxideandmoisturecouldbeenhancedthroughthegoodcryst…     

有载调压开关油室内渗油的分析与处理

阐述了主变有载调压开关切换油室的渗漏油缺陷情况及处理过程,并提出了避免类似情况发生的预防措施。     

基于sCMOS相机的超分辨定位成像技术

超分辨定位成像是一种代表性的超分辨成像技术,弱光探测器是该技术不可或缺的组成部分。和传统的串行输出EMCCD相机相比,并行输出sCMOS相机具备成像视场大、成像速度快和读出噪声低等优点,为超分辨定位成像带来了新的机遇,可在视频速率成像和大视场成像中取得明显成效。基于sCMOS相机的超分辨定位成像技术面临着高速相机带来的海量数据,需要解决数据传输、存储和计算等多环节的问题。从超分辨成像技术及相机的发展着手,讨论了基于sCMOS相机的超分辨定位成像技术的发展现状以及面临的机遇与挑战。