Slovak University of Technology in Bratislava

Experimental and Statistical Analyses of Dimensional Accuracy of Geometry-Dependent Features in Fiber Laser Cutting of CFRP

This study investigates the influence of fiber laser cutting parameters on the dimensional accuracy of carbon fiber-reinforced polymer (CFRP) components. A full factorial design of experiments was employed considering laser power, cutting speed, and laser operating mode as input...

Optimization, fuel characterization, and economic assessment of biodiesel production from watermelon seed oil using a kaolin‐based zeolite catalyst

Abstract Background Watermelon seeds are an underutilised agricultural by‐product with potential for biodiesel production, while locally available kaolin provides a low‐cost precursor for heterogeneous catalysts. This study investigated biodiesel production from watermelon seed o...

Thickness-Dependent Spintronic Terahertz Emission in Molecular Beam Epitaxy-Grown PtTe2: From Semiconductor to Type-II Dirac Semimetal

Abstract Spintronic THz emitters are the most practical broadband sources, but their performance is constrained by the spin Hall conductivity of the conversion layer. We show that PtTe2, a type II Dirac semimetal, overcomes this limitation through thickness-driven electronic phas...

On the value of MRI in early cognitive risk prediction: survival analysis comparing statistical and machine learning models

Abstract Background Early identification of individuals at risk of developing amnestic Mild Cognitive Impairment (aMCI) is essential for timely intervention in Alzheimer’s disease (AD). For such identification, MRI data may be included to capture brain changes and identify clinic...

Investigation of FBG Accelerometers and Load Sensors for Vibration Analysis and Slip Detection in Robotic Manipulators

This paper presents an investigation of the viability of Fiber Bragg Grating (FBG) accelerometers and load sensors for two diagnostic tasks in robotics: vibration analysis of industrial manipulators and slip detection in robotic grippers. The study synthesizes experimental result...

Machine Learning Surrogate Modeling in R for Rapid Screening of Green Infrastructure Hydrological Performance in Urban Stormwater Management: A Proof-of-Concept Study Using Synthetic Data

Background: Physically-based, coupled hydrological–low-impact-development (LID) models, such as the U.S. EPA Storm Water Management Model (SWMM), estimate green infrastructure (GI) performance in detail but are computationally expensive to run across many catchment, storm, and ty...

Thermal degradation and fire performance of soybean oil-modified Norway spruce: evaluating the impact of triphenyl phosphate impregnation

While thermal modification using refined soybean oil (RSO) enhances wood’s dimensional stability and hydrophobicity, its fire characteristics remain under-explored. This study addresses this literature gap by investigating a multi-step modification to mitigate the flammability ri...

Applications of drone-based photogrammetry and multi-resolution raster data processing with fine detail for fish pass analysis

Abstract High-resolution topographic data are crucial for accurately modeling hydraulic structures, particularly fish passes, where subtle geomorphic features govern flow heterogeneity and fish navigation. Conventional remote sensing approaches often lack the spatial resolution t...

Effect of Delignification Process on the Properties of Barley-Straw Pulp and Paper

Barley straw represents an underutilized agricultural residue with potential as a supplementary source of papermaking fibers. This study compared nitrate–alkaline, soda, and peracetic-acid delignification processes for the preparation of pulp from barley straw and evaluated the r...

Fire behaviour of thermo-mechanically densified wood

Abstract This study investigates the effect of thermo-mechanical densification on the fire behaviour of wood using cone calorimetry. Scots pine wood was thermo-mechanically densified from an initial thickness of 20 mm to target thicknesses of 14 and 10 mm and compared with non-de...

Thermodynamicsof Acidity and Photoacidity in trans -ResveratrolAnalogues: The Role of Prototropic Tautomerism

Abstract The thermodynamics of protonation equilibria and equilibria between enol and keto tautomers occurring in naturally found hydroxy derivatives of trans-resveratrol analogues were investigated. Reaction Gibbs free energies at room temperature were obtained using the B3LYP f...

Donor-SetSwitching in Morpholine-Functionalized 8-Hydroxyquinolines:Consequences for Metal Binding and the Bioactivity of RhCp* Complexes

Abstract Morpholine-functionalized 8-hydroxyquinoline (HQ) derivatives with reduced Schiff base linkers, Morph-Et-HQ and Morph-Pr-HQ, were synthesized and comprehensively characterized to investigate the influence of linker length on donor-set preference, metal binding, and the b...

A Measure-Theoretic Formulation of Hybrid Systems Beyond Zeno Time

Hybrid dynamical systems may exhibit Zeno behavior, where infinitely many discrete transitions occur in finite time, leading to a loss of well-posedness of trajectories beyond the accumulation point. This paper develops a measure-theoretic formulation of hybrid dynamics by repres...

Determination of branched alkylphenols, including tert-alkyl derivatives, in sediments using an integrated ultrasound-assisted extraction and liquid chromatography with fluorescence detection method

Abstract This study developed, validated, and applied an integrated analytical method for the simultaneous determination of five high-production-volume branched alkylphenols (bAPs) in sediments. The target analytes—4-dodecylphenol (4-DDP), 4-tert-amylphenol (4-t-AP), 4-tert-butyl...