Browsing Raksti konferenču krājumā un tēzes (CFI) / Conference Papers and Abstracts by Title

Now showing items 23-30 of 30

    • Structural investigation of crystallized Ge-Ga-Se chalcogenide glasses 

      Klym, H.; Shpotyuk, O.; Karbovnyk, I.; Calvez, L.; Popov, Anatoli I. (Institute of Physics Publishing, 2019)
      Crystallization transformation in the 80GeSe2-20Ga2Se3 chalcogenide glasses caused by annealing at 380 °C during different duration (25, 50, 80 and 100 hours) are studied using X-ray diffraction and atomic force microscopy ...

    • Studies of the possibilities to use ozone for the grain storage 

      Rucins, Adolfs; Straumite, Evita; Viesturs, Dainis; Kristins, Alberts (Rezekne Higher Education Institution, 2021)
      In this study was impact of ozone treatment efficiency of wheat quality (physical-chemical and microbiological parameters, chemical composition and germination rate) during storage analysed. Ozone is a powerful oxidizer, ...

    • Synthesis and studying of reduced few-layered graphene coatings in gas sensor applications 

      Lukosevics, Ingars; Lesnicenoks, Peteris; Kleperis, Janis (Institute of Physics Publishing, 2019)
      In this work reduced few-layered graphene (rFLG) nanoparticles were synthesized using electrochemical pulse exfoliation method from waste graphite crucibles. The regular change in voltage polarity in the synthesis process ...

    • Synthesis of Eu2+ and Dy3+ doped strontium aluminates and their properties 

      Rozenberga-Voska, Laura; Grabis, Janis; Zolotarjovs, Aleksejs (Trans Tech Publications Ltd., 2017)
      Strontium aluminate phosphors were synthesized by the solution combustion method using citric acid, urea or glycine as reducing agent and europium and dysprosium as dopants. The content of both dopants was in the range of ...

    • Theoretical investigations of nitrogen doping on Co 3 O 4 for water dissociation catalytically activity 

      Kaptagay, G. A.; Mastrikov, Yuri A.; Kotomin, Eugene A.; Sandibaeva, S. A.; Kopenbaeva, A. S.; Baitasheva, G. O.; Baikadamova, L. S. (Institute of Physics Publishing, 2018)
      We report the results of theoretical investigations of nitrogen doping on Co 3 O 4 (100) bulk by means of the plane-wave periodic density functional theory (DFT) calculations combined with the Hubbard-U approach and ...

    • Thermal Oxidation of Tungsten Coatings for Detection by Infrared Spectrometry Method 

      Goldmane, Annija Elizabete; Avotina, Liga; Vanags, Edgars; Trimdale-Deksne, Aija; Zaslavskis, Aleksandrs; Kizane, Gunta; Dekhtyar, Yuri (IOP Publishing, 2023)
      Physical vapor deposition (PVD) of metallic thin films is used extensively in the fabrication of semiconductor technology devices - use as of lately for them have grown. Tungsten (W) is a low resistivity, refractory metal, ...

    • Thermally induced fading of Mn-doped YAP nanoceramic 

      Martynyuk, Natalya; Popov, Anatoli I.; Zhydachevskyy, Yaroslav; Sugak, D.; Bilski, Paweł; Ubizskii, Sergii; Berkowski, Marek; Suchocki, Andrzej B. (Institute of Physics Publishing, 2018)

    • Transition levels of acceptor impurities in ZnO crystals by DFT-LCAO calculations 

      Usseinov, A. B.; Zhukovskii, Yu. F.; Kotomin, Eugene A.; Akilbekov, A. T.; Zdorovets, M. V.; Baubekova, G. M.; Karipbayev, Zh. T. (Institute of Physics Publishing, 2018)
      Large scale ab-initio calculations are carried out to study the charge state transition levels of nitrogen and phosphorus impurity defects in zinc oxide crystals using the DFT-LCAO approximation as implemented into the ...