Search
Now showing items 71-78 of 78
Upconversion luminescence of a transparent glass ceramics with hexagonal Na(Gd,Lu)F4 nanocrystals
(Elsevier B.V., 2017)
Novel Er3+ doped transparent glass ceramics containing hexagonal Na(Gd,Lu)F4 nanocrystals were prepared from oxyfluoride glasses. The distribution of rare earth ions in the crystalline and glassy phase has been analyzed ...
Phase transitions and upconversion luminescence in oxyfluoride glass ceramics containing Ba4Gd3F17 nanocrystals
(Elsevier B.V., 2017)
Novel transparent Er3+ doped oxyfluoride glass-ceramics containing Ba4Gd3F17 nanocrystals were prepared by melt quenching followed by heat treatment of as-prepared glasses. The phase composition and microstructure were ...
Electron paramagnetic resonance and photoluminescence investigation of europium local structure in oxyfluoride glass ceramics containing SrF2 nanocrystals
(Elsevier B.V., 2017)
Different compositions of europium doped aluminosilicate oxyfluoride glass ceramics prepared in air atmosphere have been studied by electron paramagnetic resonance (EPR) and optical spectroscopy methods. X-ray diffraction ...
Linguistica Lettica, Nr. 25
(LU Latviešu valodas institūts, 2017)
Reliģiski-filozofiski raksti, XXIII
(LU Filozofijas un socioloģijas institūts, 2017)
Religious-philosophical writings XXIII are devoted to the international conference “The Church and the Totalitarian Regime: Secularization and Strategies of Survival”. This conference was organised by the researchers of ...
Reliģiski-filozofiski raksti, XXII
(LU Filozofijas un socioloģijas institūts, 2017)
Novitātes šķietami sen zināmu, taču patiesībā līdz šim neatklātu un neiepazītu reliģiski-filozofisku ideju transformācijās. Piemēram, mūsdienu postsekulārā sabiedrībā nozīmīgām Jurgena Hābermāsa ideju interpretācijām veltīts ...
First principles modeling of 3d-metal doped three-layer fluorite-structured TiO2 (4,4) nanotube to be used for photocatalytic hydrogen production
(Elsevier, 2017)
We have estimated theoretically the photocatalytic suitability of thinnest single-wall fluorite-structured titania (4,4) nanotube (NT) possessing three layers each (O-Ti-O) and doped by Sc, V, Cr, Mn, Fe, Co, Ni, Cu and ...
Theoretical study on hydrogen storage capacity of expanded h-BN systems
(Elsevier, 2017)
In this work, the hydrogen storage capacity of the expanded hexagonal Boron Nitride (eh-BN) systems has been presented. We have employed a new equation of state (EOS) for hydrogen gas to figure out the hydrogen density ...