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Deposition and protection mechanisms of zirconium conversion coatings on aluminium alloy, steel and zinc substrates

Author(s): Ana Kraš (Author), Ingrid Milošev (Supervisor)

Year: 2024

Type: Doctoral dissertation

This thesis focuses on the development and optimisation of zirconium conversion coatings (ZrCCs) on cold-rolled steel (CRS), zinc (Zn), and aluminium alloy AA5754 substrates through a multidimensional approach. The utilization of statistical tools, specifically response surface methodology (RSM), enabled the assessment of the individual and mutual effects of various parameters …

Assessment of dimethyl sulphide odorous emissions released during the underground coal extraction in coal mine Velenje

Author(s): Gregor Uranjek (Author), Jože Kotnik (Supervisor), Radmila Milačič (Co-Supervisor)

Year: 2024

Type: Doctoral dissertation

Underground coal extraction at Coal Mine Velenje occasionally gives rise to odour complaints from local residents and irritates and disturbs the miners at work in the mine. This work describes a robust quantification of odorous emissions of mine sources and a model-based analysis aimed to establish a better understanding of …

Interplay between autophagy and lipid droplets in starving cancer cells

Author(s): Maida Jusović (Author), Toni Petan (Supervisor)

Year: 2024

Type: Doctoral dissertation

Lipid droplets (LDs) are intracellular organelles that store lipids, mainly triacylglycerols (TAGs) and sterol esters. LDs were initially considered just inert fat reservoirs but have now been identified as critical players in the cellular stress response, especially in cancer cells. In response to various kinds of stress, including nutrient deprivation …

Tracing mercury in the wider Idrija region using stable isotopes

Author(s): Dominik Božič (Author), Milena Horvat (Supervisor), Marko Štrok (Co-Supervisor)

Year: 2024

Type: Doctoral dissertation

Mercury, a toxic element, known for its physical and chemical properties, spreads throughout the environment and is found in various ecosystems, including water, air, soil, and biological systems. The natural mercury cycle begins beneath the earth's crust, where it rises to the surface and is released into the air through …

Hypoxia in aquatic sports

Author(s): Joshua T. Royal (Author), Igor B. Mekjavić (Supervisor), Adam McDonnell (Co-Supervisor), Jernej Kapus (Co-Supervisor)

Year: 2024

Type: Doctoral dissertation

The present thesis considers the premise that breath-holding in aquatic sports, primarily swimming, in order to enhance performance, can potentially cause adaptation to tissue hypoxia. To investigate this theory, a series of studies needed to be performed: I. Analysis of variability in individuals’ responses to hypoxia, to evaluate the range …

Pre-processing of heterogeneous data streams for internet of things applications

Author(s): Klemen Kenda (Author), Dunja Mladenić (Supervisor)

Year: 2024

Type: Doctoral dissertation

The rapid evolution of sensor technologies, particularly within the Internet of Things (IoT) domain, has led to an era dominated by massive real-time data flows. This transition resulted in the need for novel data processing methodologies that facilitate the shift from traditional offline batch analytics to agile real-time predictions and …

Probabilistic grammar-based equation discovery

Author(s): Jure Brence (Author), Sašo Džeroski (Supervisor), Ljupčo Todorovski (Co-Supervisor)

Year: 2024

Type: Doctoral dissertation

In this thesis, we introduce novel methods for equation discovery (ED), based on the use of probabilistic grammars. ED and symbolic regression address the task of finding a symbolic mathematical model that best describes observed data. Models can be as simple as an algebraic equation or as complex as a …

ǂA ǂdecision-support system for the design of a green-hydrogen production system in a hydropower plant

Author(s): David Jure Jovan (Author), Gregor Dolanc (Supervisor)

Year: 2024

Type: Doctoral dissertation

This dissertation combines academic research and the application of its results to a real benchmark process. With the emerging electro-energetic systems that have a large share of renewable sources, hydrogen is becoming an important energy carrier that contributes to the storage and usage of surplus green energy and thus reduces …

Piezoelectric polymer films made of polyl-lactic acid for biomedical use

Author(s): Lea Gazvoda (Author), Marija Vukomanović (Supervisor)

Year: 2024

Type: Doctoral dissertation

In the field of biomedical materials, conventional approaches to tissue engineering and wound healing face limitations that encourage the exploration of innovative treatments. This work presents multifaceted exploration of piezoelectric polylactic acid (PLA) films intended for biomedical applications, from the optimization of the conditions for efficient film preparation to the …

Optimization of ToF-SIMS depth profiling in low-pressure H2, C2H2, CO and O2 atmosphere

Author(s): Jernej Ekar (Author), Janez Kovač (Supervisor)

Year: 2024

Type: Doctoral dissertation

Time-of-flight secondary ion mass spectrometry (ToF-SIMS) is a versatile analytical method widely used in the field of surface science and thin films. Although it gives elemental, molecular, and isotopic information, it has a very low detection limit and high lateral resolution, is fast and works with all the vacuum-compatible samples, …