简介:Theobservationandestimationofdirectionalspectraofseawavesisoneoftheessentialsubjectsofstudyofoceanicdynamics.Onthebasisoftheirregularlinearwavetheory,estimationmethodsfori/UV,PUVandVVdirectionalwavespectraarederived.ByusingijandPUVdatameasuredin-situ,directionalwavespectraareestimated,meanwhilethevirtuesanddefectsofvariousspectraarecomparied.Thismethodprovideabasisfortheobservationsofseawaves.
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简介:Anovelfluorescencelifetimeimagingmicroscopy(FLIM)workingwithdeepUV240–280nmwavelengthexcitationshasbeendeveloped.UV-FLIMisusedformeasurementofdefect-relatedfluorescenceanditschangesuponannealingfromfemtosecondlaser-inducedmodificationsinfusedsilica.ThisFLIMtechniquecanbeusedwithmicrofluidicandbiosamplestocharacterizetemporalcharacteristicsoffluorescenceuponUVexcitation,acapabilityeasilyaddedtoastandardmicroscope-basedFLIM.UV-FLIMwastestedtoshowannealingofthedefectsinducedbysilicastructuringwithultrashortlaserpulses.Frequency-domainfluorescencemeasurementswereconvertedintothetimedomaintoextractlongfluorescencelifetimesfromdefectsinsilica.
简介:UVwavelengthauto-tunedoutputsystemisrealizedbythedifferencemethod.Controlledbythemicroprocessor,outputwavelengthauto-trackingisachieved.Besides,equipmentself-checkingauto-positioningandtemperaturecorrectarerealized.Thewavelengthtunedoutputefficiencyintheexperimentisbetterthan97%.
简介:FurfuralinaqueoussolutionwastreatedbyUV/O3method.Theresultsshowthattheremovalrateoffurfuralisseverelyenhancedandthesynergismphenomenonappearswhenultravioletandozonearepresenttogether.TheinfluencesofexperimentalparameterssuchaspH,theintensityoflightandthenegative-positiveionsonfurfuraldegradationwereinvestigated.Theresultsindicatethatfurfural(300mg/L)isalmostcompletelydegradedafter3hundertheoptimumconditions.TheintermediateinthefurfuraldegradationwascharacterizedbyGC-MSandIRspectrumandthedegradationmechanismoffurfuralbyUV/O3technologywasproposed.
简介:综合C-phycocyanins(CPC)做了硅石简历材料被SEM和赌注表面区域分析测量描绘。CPC的形态学做了硅石简历材料显示硅石簇的表面被很多硅石粒子与一种平均尺寸形成在30和40nm之间。硅石本身是有2.95nm的平均毛孔直径的多孔的结构。有他们的直径的毛孔为84.07%的不到5nm报道。另外,CPC能作为一根荧光灯的蛋白质探针被利用监视蛋白质封装的影响并且在硅石矩阵学习矩阵和蛋白质相互作用和蛋白质的稳定性。蛋白质封装硅石材料的申请要求简历分子在潜在地相反的工业条件上保留简历活动和稳定性。在答案或在硅酸盐矩阵的CPC在相片漂白由紫外光线罐头结果照耀,而在硅石的蛋白质少些被影响。在缓冲区答案的CPC的测量相片损坏率常数是比在硅石矩阵的CPC的快25倍的。然而,在硅石矩阵或磷酸盐缓冲区的CPC的一生是未受影响的。这些研究建议CPC的那个陷阱进硅石矩阵能不仅维持他们的生物活动而且显著地改进他们的相片稳定性。
简介:研究LED-UV油墨在国内外的研究现状,包括LED-UV油墨制备配方及方法,光引发剂及预聚物的改性研究,以及光引发剂与颜料的“光谱窗口”的匹配研究等。提出在夺氢型光引发剂中加入小分子巯基化合物,缓解光氧阻聚作用;合成超支化聚氨酯丙烯酸酯作为LED-UV油墨的预聚物,实现UV油墨在LED光源下迅速固化;以及光引发剂与颜料“光谱视窗”研究方向等。