DSpace at the Univeristy of Latvia: Recent submissions
Now showing items 81-100 of 62614
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Personalized PDAC chip with functional endothelial barrier for tumour biomarker detection: A platform for precision medicine applications
(Elsevier B.V., 2024)Pancreatic ductal adenocarcinoma (PDAC) is a highly aggressive cancer characterised by poor survival rates and an increasing global incidence. Advances in the staging and categorization of pancreatic tumours, along with ... -
Myopia Detection from Eye Fundus Images: New Screening Method Based on You Only Look Once Version 8 †
(MDPI, 2024)Myopia is an eye disorder of global concern due to its increasing prevalence worldwide and its potential to cause sight-threatening conditions. Diagnosis is based on clinical tests such as objective cycloplegic refraction, ... -
Luminescence of copper-doped α-quartz crystal after oxygen treatment
(Elsevier B.V., 2025)Treatment of copper-doped natural α-quartz in oxygen atmosphere at 1200 °C leads to changes in luminescence properties. The luminescence center of AlO4−-Cu+ is modified. The intensity is low in the annealed sample and ... -
Novel Anodic TiO2 Synthesis Method with Embedded Graphene Quantum Dots for Improved Photocatalytic Activity
(MDPI, 2024)Photocatalytic degradation of pollutants have a high potential for sustainable and renewable uses. TiO2 is a widely studied photocatalyst due to its high chemical and photochemical stability and wide range of applications. ... -
Numerical Simulations of Thermodynamic Processes in the Chamber of a Liquid Piston Compressor for Hydrogen Applications
(MDPI, 2024)This paper presents the results of numerical simulations examining the thermodynamic processes during hydraulic hydrogen compression, using COMSOL Multiphysics® 6.0. These simulations focus on the application of hydrogen ... -
Microphysiological system with integrated sensors to study the effect of pulsed electric field
(Nature Research, 2024)This study focuses on the use of pulsed electric fields (PEF) in microfluidics for controlled cell studies. The commonly used material for soft lithography, polydimethylsiloxane (PDMS), does not fully ensure the necessary ... -
Low temperature recombination luminescence of Mg3Y2Ge3O12:Tb3+
(Elsevier B.V., 2024)A study was conducted to examine the recombination processes in persistent phosphor Mg3Y2Ge3O12:Tb3+ garnet at low temperatures. Photoluminescence (PL), recombination luminescence (RL), electron paramagnetic resonance ... -
Fabrication of Large-Area High-Resolution Templates by Focused Ion Beam Combined with Colloidal Nanoparticle Dimer Deposition for SERS Substrates
(MDPI, 2024)This article presents an examination of well-controlled patterns created using a Ga+-based focused ion beam (FIB) on glass, while silicon substrates were used to evaluate the FIB performance by its achievable feature size ... -
Enhancing specific capacitance and energy density in printed supercapacitors: The role of activated wood carbon and electrolyte dynamics
(Elsevier Ltd, 2025)This study investigates Activated Wood Carbon (AWC) as an electrode material for advancing printed supercapacitors (SCs). AWC, derived from biomass, offers a sustainable alternative to conventional activated carbons. The ... -
Effect of rhodium doping for photocatalytic activity of barium titanate
(Elsevier B.V., 2025)By means of DFT oxygen evolution reaction on Rh-doped BaTiO3 (001) surface has been modeled. Gibbs free energies for each step of the reaction as well as the values of overpotential have been calculated, taking into account ... -
Effect of Molybdenum Concentration and Deposition Temperature on the Structure and Tribological Properties of the Diamond-like Carbon Films
(MDPI, 2024)Two series of non-hydrogenated diamond-like carbon (DLC) films and molybdenum doped diamond-like carbon (Mo-DLC) films were grown on the silicon substrate using direct current magnetron sputtering. The influence of molybdenum ... -
Chemical state and atomic structure in stoichiovariants photochromic oxidized yttrium hydride thin films
(Walter de Gruyter GmbH, 2024)We investigate the effective oxidation state and local environment of yttrium in photochromic YHO thin film structures produced by e-beam evaporation, along with their chemical structure and optical properties. Transmission ... -
An alternative chlorine-assisted optimization of CdS/Sb2Se3 solar cells: Towards understanding of chlorine incorporation mechanism
(Elsevier Ltd, 2024)The current strategies in the development of Sb2Se3 thin film solar cells involve fabrication and optimization of superstrate and substrate device architectures, with the preferable choice for TiO2 and CdS heterojunction ... -
Spānijas pilsoņu kara (1936-1939) starptautiskā dimensija un Latvija
(Latvijas Universitāte, 2024)Promocijas darba mērķis ir analizēt Spānijas pilsoņu kara starptautisko dimensiju, aplūkojot salīdzinoši nelielas valsts – Latvijas – un tās pilsoņu nostāju konfliktā un ar to saistītajos starptautiskajos procesos. Darbā ... -
Laikmetīgā kultūra kā antropoloģisks izaicinājums. Homo Aestheticus
(Latvijas Universitāte, 2024)Promocijas darba “Laikmetīgā kultūra kā antropoloģisks izaicinājums. Homo Aestheticus” pētījuma priekšmets ir filozofiskās estētikas attīstības per- spektīvas Rietumu kultūras tradīcijā. Darba mērķis ir estētiskā tematizācija ... -
Mūsu galvas pilsēta: jaunais vadonis pa Rīgu ar vēsturiskām vietām, aprakstiem un skatiem 1930.-1931. = Unsere Haupstadt: neuer Führer durch Riga, deren historische Sehenswürdigkeiten mit Beschreibungen und Ansichten
(Latvijas Kultūras veicināšanas biedrība, 1930)Saturā arī: Medicīnas un juridiskās nodaļas ar pilnu medicīniskā un juridiskā personāla sarakstiem. Firmu branžu reģistris . Nepieciešama rokas un adrešu grāmata ikvienam pilsonim, tūristam, tirgotājam, ārstam, advokātam, ... -
Original Blue Light-Emitting Diphenyl Sulfone Derivatives as Potential TADF Emitters for OLEDs
(MDPI, 2024)Organic light-emitting diodes (OLEDs) have emerged as one of the dominant technologies in displays due to their high emission efficiency and low power consumption. However, the development of blue color emitters has fallen ... -
Wet-Chemical Synthesis of a Protective Coating on NCM111 Cathode: The Quantified Effects of Washing, Sintering and Coating
(The Electrocemical Society, 2024)LiNixCoyMn1-x-yO2 (NCM) cathodes, especially with high Ni content, are widely expected to keep advancing the energy density of Li-ion batteries. However, ensuring a good cycle life remains a key challenge. Applying inert ... -
Utilizing an Arduino Uno-Based System with Integrated Sensor Data Fusion and Filtration Techniques for Enhanced Air Quality Monitoring in Residential Spaces
(MDPI, 2024)This study presents an air quality monitoring system that employs the Arduino Uno microcontroller. The system is augmented with a moving average filter and data fusion techniques from BME680 and CCS811 sensors, which are ... -
Synthesis Method Comparison of N-Doped Carbons for Electrochemical Energy Storage
(MDPI, 2024)This study investigates nitrogen-doped carbon synthesis and electrochemical properties as electrode material for energy storage devices, an additional focus of the work is on the electrochemical exfoliation synthesis of ...