简介：Er3+-Tm3+-Yb3+tri-dopedBaMoO4phosphorsweresynthesizedbyco-precipitationtechniqueandcharacterizedbyX-raydiffractionanalysis,absorptionstudyandfieldemissionscanningelectronmicroscopyanalysis.Upconversionaswellasdownconversionluminescencestudieswereperformedbyusingnearinfrared（980nm）andultraviolet（380nm）excitations.Energyleveldiagram,pumppowerdependenceandcolourcoordinatestudywereutilizedtodescribethemulticolorupconversionemissionproperties.Undersingle980nmdiodelaserexcitationthedualmodesensingbehaviourisrealizedviaStarksublevelsandthermallycoupledenergylevelsoftheTm3+andEr3+ionsinthepreparedtri-dopedphosphors.AcomparativefluorescenceintensityratioanalysisforintegratedemissionintensitiesarisingfromtheStarksublevels{1G4（a）and1G4（b）}andthermallycoupledenergylevels{2H11/2and4S3/2}oftheTm3+andEr3+ions,respectivelywascarriedoutinthepreparedtri-dopedBaMoO4phosphors.ThemaximumsensitivityforthermallycoupledenergylevelsoftheEr3+andStarksublevelsoftheTm3+ionwasreported.Thedevelopedphosphorscouldbeusefulinthedisplaydevicesandopticalthermometricapplications.

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简介：AseriesofCeB6-dopedandCeO2-dopedCa1-xSiAlN3:xCe3+（denotedasCASN:Ce3+@CeB6andCASN:Ce3+@CeO2,respectively）weresynthesizedbyalloy-nitridationmethodunderhigh-puritynitrogenatmosphere.Themorphologies,crystalphases,andluminescencepropertieswereinvestigatedindetail.WithanincreaseintheconcentrationofCeB6,theunitcellvolumeofCASN:Ce3+@CeB6slightlyincreasesduetothesubstitutionbetweenions,whichleadstoachangeofmicrostructurearoundCe3+.CASN:Ce3+@CeB6efficientlyemitsyellow-orangelightwithamaximumemissionintensityataround550nmforthecontentxof0.01（beingincomparablesituation,CASN:Ce3+@CeO2isx=0.04）whenexcitedat460nm.ComparedwithCASN:Ce3+@CeO2,theredemissioncomponentofCe3+inCASN:Ce3+@CeB6ismuchstronger.Thisisascribedtoenergytransferofintra-Ce3+（withinoneCe3+ion）andinter-Ce3+（betweenCe3+andCe3+ions）.Inaddition,thereplacementsofN3-（0.132nmforCN=4）andO2-（0.124nmforCN=4）byB2-（0.140nmforCN=4）,whichcanleadtoamarkedexpansionofthehostlatticeandadecreaseoftheoxidationofsamples,arealsoresponsiblefortheincreaseofredemissioncomponent.Furthermore,CASN:Ce3+@CeB6phosphorhasanexcellentthermalstabilitybecauseofthepartialsubstitutionofCe-O（Ce-N）bondsbymorecovalentCe-B.Asaresult,theoutstandingluminescentpropertiesofCASN:Ce3+@CeB6phosphormakeitpracticaltouseinthesinglephosphor-coatedhigh-color-renderingpowerwhiteLED.

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简介：丹麦议会于6月27日投票通过了该圉的新能源协议，决定到2030年再新建三座海上风电场，总容最至少为240万千瓦。协议还提出了丹麦新的能源发展目标，要求到2030年，可再生能源占能源消耗总量的55％。

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简介：以莱钢3200m3高炉妒前智能润滑为对象，分析了智能润滑在使用过程中的优点。同时结合实际运行中出现的故障，指出了在恶劣环境下，尤其是在整体转动设备润滑方面，智能润滑存在的不足之处。

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简介：以Ti粉、Al-V合金粉及Mo粉为原料,通过冷等静压和真空烧结制备Ti-3Al-5Mo-4.5V(TC16)合金,并对该合金的组织与力学性能进行研究。结果表明,粉末冶金TC16合金具有由α相和β相组成的网篮组织,相对密度约为93.5%,抗拉强度、屈服强度和伸长率分别为1062MPa,973MPa和2.3%,关键性能(屈服强度)达到铸造TC16合金水平。

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