Rakendusliku mõõteteaduse õppekava magistritööd – Master's theses
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Organic Constituents of Atmospheric Aerosols in a Hemi-boreal Forest
(Tartu Ülikool, 2022)Atmospheric aerosols have been demonstrated to be a highly dynamic system, playing a significant role in climate change and human health. In nature, ecosystems like boreal forests can modify the atmospheric particles ... -
Development of method for boron determination in basalt fibers
(Tartu Ülikool, 2022)The main objective of the present thesis was to develop a method to determine the boron content of boron doped basalt fibers. Two types of samples were investigated: natural basalt powders doped with H3BO3 were used for ... -
Validating the pyroelectric radiometer
(Tartu Ülikool, 2021)This master’s thesis describes the in-lab validation of the electrically calibrated pyroelectric radiometer (ECPR). The ECPR was inter-compared with two reflection-type trap detectors, a FEL lamp, and an absolute electrical ... -
Development of Li column chemistry procedure for calcium carbonate material
(Tartu Ülikool, 2021)The main objective of the study was to develop a relatively fast and robust column to isolate Li from the matrix components in solutions prepared from carbonate materials. Four parameters, eluent concentration, matrix ... -
Signal upscaling with the sequential addition of reagents for enhancement of detection sensitivity
(Tartu Ülikool, 2021)In the present study, a simplified model system for signal upscaling using sequential addition of reagents was aimed to be developed using gold nanoparticles (AuNPs). For achieving this goal, two approaches were investigated: ... -
Effect of soil sample preparation on fatty acid biomarker content
(Tartu Ülikool, 2021)Different techniques for the pre-treatments were applied at various time frames to evaluate their impact on fatty acid biomarkers content for the soil sampled from Suurmetsa, Põlva County, Estonia, one from the arable field ... -
Development of a high-throughput method for soil fatty acid derivatization and analysis
(Tartu Ülikool, 2021)The Bligh and Dyer method of extraction and separation of phospholipid fatty acids (PLFAs) and neutral lipid fatty acids (NLFAs) has been extensively used in soil microbial community studies. A high throughput method of ... -
Isotopic stability of mass reference materials and possible use as isotopic reference materials
(Tartu Ülikool, 2020)Natural isotope variation or fractionation depends on equilibrium and kinetic processes affecting the individual isotope. The purpose of the of this work is to determine the stability and reproducibility of historical data ... -
Nitrogen removal in anaerobic ammonium oxidation process-based bioelectrochemical system.
(Tartu Ülikool, 2020)Nitrogen removal process was studied in a microbial electrosynthesis (BES) system at different applied voltages. Three different inoculation methods were compared and cyclic voltammograms were generated to evaluate changes ... -
Simultaneous determination of selected antimicrobial agents in sewage sludge by pressurized liquid extraction and LC -MS/MS
(Tartu Ülikool, 2020)In the present study, an efficient analytical method for the simultaneous determination of an amphenicol, sulfonamides (SAs) and fluoroquinolones (FQs) in a sewage sludge matrix was developed by high performance liquid ... -
The optimization of conditions for the start-up of anammox bacteria seeded with non-specific biomass
(Tartu Ülikool, 2020)Start-up of anammox bacteria mediated nitrogen removal from synthetic and reject water sources was investigated using a sequential batch reactor (SBR) inoculated with non-specific seed sludge (aerobic and anaerobic sludge ... -
Determination of antibacterials in river water by solid phase extraction using LC -MS/MS
(Tartu Ülikool, 2020)Analytical method was developed for the detection of fluoroquinolones (FQs), sulfonamides and Amphenicol in Emajogi river in Tartu City. The compounds were simultaneously extracted from river water using solid phase ... -
X-Ray Photoelectron Spectroscopy Studies of Carbon-Based Electrocatalytic Materials
(Tartu Ülikool, 2020)X-ray photoelectron spectroscopy (XPS) was used for investigation of carbon-based electrocatalysts. According to the measurements, in a majority of samples, the main components were carbon, nitrogen and oxygen, as expected. ... -
Characterization of a Temperature Measurement System for Use in Vacuum
(Tartu Ülikool, 2020)Thermal vacuum tests must be performed to ensure the survivability of the spacecraft during the development and performance validation stages. To carry out these tests, vacuum compatible temperature sensors are placed on ... -
Functional Interactions of metalloprotein YbeY, involved in ribosomal metabolism, with the putative metal efflux protein YbeX
(Tartu Ülikool, 2019)YbeY is a putative ribosomal endoribonuclease which has been implicated, among other things, to be involved in quality control of 70S ribosomes, in 17S pre-rRNA maturation and in ribosomal degradation. However, controversy ... -
Oxygen reduction on platinum nanoparticles deposited onto chromium carbide-derived carbon support
(Tartu Ülikool, 2019)Polymer electrolyte membrane fuel cells are very promising energy conversion devices, which have already found application in public transportation. However, one of the obstacles in the even wider application is the ... -
Isosorbide-based monomers and novel stiff biobased polymers
(Tartu Ülikool, 2019)The goal of this work was to explore the synthesis of bioderived isosorbide based monomers and corresponding biobased polymers. The attractive features of isosorbide derivatives as monomers are linked to their rigidity, ... -
Determination of Amino Acids in Bee Products by Diethyl ethoxymethylenemalonate Derivatization Using LC-ESI-MS/MS
(Tartu Ülikool, 2019)Amino acid content of honey and royal jelly has been used for the product authentication, geographical and botanical origin evaluation, indication of freshness and nutritional value. In this thesis analytical method was ... -
Error Analysis in Fe-Rich Geological Samples by X-Ray Fluorescence Spectroscopy: Fundamental Parameter Method
(Tartu Ülikool, 2019)The purpose of this study was to develop and validate X-ray fluorescence spectrometry (XRF) method, the application of Fundamental Parameter method on Fe-rich geological samples major and trace elements, the analysis of ... -
Testing of buffy coat platelet concentrate pathogen inactivation by Intercept double-dose system in North Estonia Medical Centre´s Blood Centre
(Tartu Ülikool, 2017)The aim of this thesis was to develop a method for production of buffy coat platelet concentrates suitable for use with Intercept platelet processing set with dual-storage containers and to assess the conformity of pathogen ...
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