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简介：Anovelfluorescencelifetimeimagingmicroscopy(FLIM)workingwithdeepUV240–280nmwavelengthexcitationshasbeendeveloped.UV-FLIMisusedformeasurementofdefect-relatedfluorescenceanditschangesuponannealingfromfemtosecondlaser-inducedmodificationsinfusedsilica.ThisFLIMtechniquecanbeusedwithmicrofluidicandbiosamplestocharacterizetemporalcharacteristicsoffluorescenceuponUVexcitation,acapabilityeasilyaddedtoastandardmicroscope-basedFLIM.UV-FLIMwastestedtoshowannealingofthedefectsinducedbysilicastructuringwithultrashortlaserpulses.Frequency-domainfluorescencemeasurementswereconvertedintothetimedomaintoextractlongfluorescencelifetimesfromdefectsinsilica.

简介：FurfuralinaqueoussolutionwastreatedbyUV/O3method.Theresultsshowthattheremovalrateoffurfuralisseverelyenhancedandthesynergismphenomenonappearswhenultravioletandozonearepresenttogether.TheinfluencesofexperimentalparameterssuchaspH,theintensityoflightandthenegative-positiveionsonfurfuraldegradationwereinvestigated.Theresultsindicatethatfurfural(300mg/L)isalmostcompletelydegradedafter3hundertheoptimumconditions.TheintermediateinthefurfuraldegradationwascharacterizedbyGC-MSandIRspectrumandthedegradationmechanismoffurfuralbyUV/O3technologywasproposed.

简介：在一个给定的空间区域的全部的精力上的限制被就装入那个区域的一个黑洞的团从雷射摄影术给，它导致一种UV/IR关系：在那个区域的最大的精力密度与M在哪儿的p2/L2,Mp是普朗克常数团，L是在考虑下面的那个区域的空间规模。在宇宙假定最大的黑洞在宇宙通过不安的重力的倒塌被形成，然后不安的规模给原因的连接规模RCC。为重力的不安，R为扁平的宇宙的CC−2=马克斯(+2H2,−)。我们分别地由在UV/IR关系选择原因的连接规模为IR截止学习相应真空精力密度的宇宙论的动力学，在象一个独立地保存的精力部件和一个有效动态宇宙论的常数的真空精力密度的情况中。结果仅仅有选择R−2CC当真空密度作为一个独立地保存的精力部件出现时，2=+2H2,能与当前的宇宙论的观察一致。在这种情况中，模型在文学被称为holographicRicci分级的黑暗精力模型。

简介：Inthispaper,theUV-theoryandP-differentialcalculusareemployedtostudysecond-orderex-pansionofaclassofD.C.functionsandminimizationproblems.Undercertainconditions,somepropertiesoftheU-Lagrangian,thesecond-orderexpansionofthisclassoffunctionsalongsometrajectoriesareformulated.SomefirstandsecondorderoptimalityconditionsfortheclassofD.C.optimizationproblemsaregiven.

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简介：Fivefluorine-containingvinylethermonomerswerepreparedbythereactionbetween2-vinyloxyethanol,afluorinatedalcoholandhexafluorobenzeneinthepresenceofsodiumhydrideindimethylformamide.Tworepresentativepropertiesofthesemonomers,UV-curingbehaviorinitiatedbyacationicphoto-initiatorPAG201andsurfacefreeenergyofcoatingfilms,wereinvestigated.Photo-polymerizationproceededbothrapidlyandcompletelywithahighdouble-bondconversion(>90%)andafastcuringrate(maximumcuringtime<21s)forthreemonomers.Thesurfaceenergiesofthemonomersandtheresultingpolymerfilmsweretheninvestigated.TheminimumsurfacefreeenergyoftheUV-curedhomopolymerfilmsreaches7.1mJ/m2.X-rayphotoelectronspectroscopydatashowthatthelowsurfacetensionisinfluencedbyfluorinecontentinthesoftsegmentsandfluorinatedchains'migrationtothesurface.Thefivemonomersexhibitlowviscosity,lowsurfaceenergy,goodthermalstabilityandgoodphoto-polymerizationproperties,whichmakethemgreatcandidatesforUVcoatingandphotoresistapplications.

简介：ThecaptureoforthophosphatesandtotalphosphorusfromthePudongCanalriverinthePudongDistrictofShanghaibyTiO2nanoparticlesisstudiedusingarotatingphotoreactorandthenano-TiO2photocatalystDegussaP25.TheeffectsofUVirradiationintensityinarangeof20-74mW/cm2.theloadingoftheTiO2nanoparticlesinarangeof0.05-0.1g/L,irradiationtimeupto4h,andpHvaluesinarangeof2-10.5onthecaptureefficiencyareinvestigated.TheresultsshowthatthecaptureoforthophosphatesandtotalParesignificantlyenhancedbyUVirradiation;ataloadingof0.1g/Landanirradiationintensityabove36mW/cm2,orthophosphatesandtotalphosphorusarerapidlycapturedbyTiO2nanoparticles,causinganobservedreductionfrom0.4mg/Ldownto0.02mg/L.pHvaluesinarangeof2-10.5havelittleeffectonthecaptureefficiencyoforthophosphatesandtotalphosphorus.

简介：TheparametricoptimizationoftheNe-CuBrUVlaserexcitedbylongitudinalpulseddischargeisanalysedbyusingaself-consistentkineticmodel.Consistentcharacteristicsoftheoptimizationprocessareobtainedbycomparingwiththeexperimentalresults.Simulationresultsshowthatneonionscomeintobeingalongwithconsiderabledepletionoftheground-statecopperatoms.Andtheoptimizationofthedischargetubediameteristhetradeoffbetweenthespecificoutputphotondensityandthetotalactivevolume.Boththeoptimalneongaspressureandtheoptimalreservoirtemperatureresultfromthebalancebetweentheneoniondensityandtheground-statecopperatomdensitytoarriveatamaximumoftheirproduct.

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简介：银电影(Ag)和有厚度~的silvergold电影(AgAu)15nm在通过热蒸发的Bk7眼镜上是涂的。在做5.2%的黄金以后，Ag电影的谷物尺寸从13.6把nm归结为9.1nm，也，表面粗糙从1.45nm减少到0.94nm。一盏紫外灯被用作照耀光来源在空气加速腐蚀过程。当AgAu电影更不降级时，在17h以后，照耀，纯银电影表面拐弯黑暗，和发射度从350把nm归结为500nm，几乎微不足道的在紫外放射以后。另外的X光光电子光谱学和原子力量显微图数据被提供显示出电影和他们的表面形态学的原子内容。小谷物尺寸和合金电影的高收拾行李密度在空气与氧阻止银的反应，这被建议，它导致AgAu电影的高稳定性。

简介：Fe2O3solwiththeparticlediameterof3-5nmwasflocculatedbytheadditionofSDS,andtheflocculateformedwasredispersedbythefurtheradditionofthatsurfactant.ThusthesurfactantbilayerwasformedonthesurfaceofFe2O3.Theemulsionpolymerizationofstyrene(St)adsolubilizedonthesurfactantadsorbedbilayerwascarriedoutbyinitiatorpotassiumpersulfate(KPS).TheUV-Visandsurfacephotovoltagespectra(SPS)indicatethattheFe2O3particleswereencapsulatedinpolystyrene(PSt)successfully.

简介：TheeffectsofmagneticfieldonthegraftratioandstereoregularityofgraftsofPVA-g-MMAinthepresenceofbenzophenoneduringUVirradiationarediscussed.BymeansofIR,itwasfoundthatthegraftratiowasincreasedwiththeincrementofmagneticfieldstrength.Furthermore,applicationofrelativeweakmagneticfieldof0.4Teslahadbeenshowntosubstantiallyenhancethestereo-regularityofgraftcopolymer.Themaximumstereo-regularityappearedwhenthegraftratioapproachedto85%withthemagneticfieldof1.2Tesla(T).Theresistancetomoistureandheatresistanceofthegraftedcopolymerinthepresenceofmagneticfieldwerealsoimproved.

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简介：AsimplespectrophotometricassayofH2O2andglucoseusingAgnanoparticleshasbeencarriedout.RelyingonthesynergisticeffectofH2O2reductionandultraviolet(UV)irradiation,Agnanoparticleswithenhancedabsorptionsignalsweresynthesized.H2O2servedasareducingagentintheAgnanoparticlesformationinwhichAg+wasreducedtoAg0byO2àgeneratedviathedecompositionofH2O2inalkalinemedia.Ontheotherhand,photoreductionofAg+toAg0underUVirradiationsalsocontributedtothenanoparticlesformation.ThesynthesizednanoparticleswerecharacterizedbyTEM,XPS,andXRD.TheproposedmethodcoulddetermineH2O2withconcentrationsrangingfrom5.010à7to6.010à5mol/L.Thedetectionlimitwasestimatedtobe2.010à7mol/L.SincetheconversionofglucosetogluconicacidcatalyzedbyglucoseoxidasewascompaniedwiththeformationofH2O2,thesensingprotocolhasbeensuccessfullyutilizedforthedeterminationofglucoseinhumanbloodsamples.Theresultswereingoodagreementwiththosedeterminedbyalocalhospital.Thiscolorimetricsensorthusholdsgreatpromisesinclinicalapplications.

简介：Wehavesuccessfullydemonstratedthathighqualityandhighdielectricconstantlayerscanbefabricatedbylowtemperaturephoto-inducedor-assistedprocessing.Ta2O5andZrO2havebeendepositedatt＜400℃bymeansofaUVphoto-CVDtechniqueandHfO2byphoto-assistedsol-gelprocessingwiththeaidofexcimerlamps.TheUVannealingofas-grownlayerswasfoundtosignificantlyimprovetheirelectricalproperties.Lowleakagecurrentdensitiesontheorderof10-8A/cm2at1MV/cmfordepositedultrathinTa2O5filmsandca.10-6A/cm2forthephoto-CVDZrO2layersandphoto-irradiatedsol-gelHfO2layershavebeenreadilyachieved.TheimprovementintheleakagepropertiesoftheselayersisattributedtotheUV-generatedactiveoxygenspeciesO(1D)whichstronglyoxidizeanysuboxidestoformmorestoichiometricoxidesonremovingcertaindefects,oxygenvacanciesandimpuritiespresentintheas-preparedlayers.Thephoto-CVDTa2O5filmsdepositedacross10.16-cmSiwafersexhibitahighthicknessuniformitywithavariationoflessthan±2.0%beingobtainedforultrathinca.10nmthickfilms.Thelamptechnologycaninprinciplebeextendedtolargerareawafers,providingapromisinglowtemperatureroutetothefabricationofarangeofhighqualitythinfilmsforfutureULSItechnology.

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