Gdańsk University of Technology

Sustainable Approach to Thermoplastic Polyurethanes Stabilization: Vanillin as a Natural Additive in Melt-Processing

Thermo-oxidative degradation during high-temperature processing remains a major challenge limiting the performance of thermoplastic polyurethanes (TPUs). This study evaluated vanillin (4-hydroxy-3-methoxybenzaldehyde), a bio-based phenolic compound, as a primary thermo-oxidative...

Machine learning and Weibull-based reliability analysis of impact-resistant geopolymer concrete with construction demolition waste and natural fibers

This study presents a novel impact-resistant geopolymer concrete (GPC) incorporating construction and demolition waste powder, brick waste powder, slag, recycled concrete aggregates (RCA), and natural fibers (banana, jute, and pineapple) to simultaneously enhance its mechanical p...

Feasibility study of using magnetic and thermoelectric methods for the assessment of storage-induced changes in flux-cored welding wires

The lack of knowledge regarding whether a welding consumable remains suitable for the welding process or has undergone degradation that precludes its further use constitutes a significant challenge. Appropriate control procedures and effective evaluation methods may contribute to...

Evaluating cardiological rehabilitation using wavelet analysis: a pre- and post-rehabilitation comparison

Abstract Cardiac rehabilitation (CR) improves prognosis and exercise capacity, but conventional indices may not fully capture subtle changes in cardiovascular signal dynamics. Time–frequency analysis of cardiovascular signals may provide additional, candidate time–frequency featu...

Ionic Liquid Mixtures in Task-Specific Applications: Linking Composition, Physicochemical Properties, and Performance

Ionic liquids (ILs) are often described as designer solvents. However, a single cation–anion pair rarely optimizes phase stability, transport properties, and task-specific functions simultaneously. Mixing introduces composition as a continuous design variable, which can suppress...

Self-Consistent Diagrammatic Theory of Energy Migration and Trapping on Spherical Nanoparticles

Abstract We present, for the first time, a comprehensive theoretical model that elucidates multistep energy migration, including its remigration in the donor ensemble, followed by nonradiative excitation transfer to acceptors, on a finite-radius spherical nanoparticle labeled wit...

Agile-mindset leadership as agile-cultural practice. Leaders’ and followers’ views per gender

Purpose This study aims to examine whether the agile-mindset leadership paradox, characterized by the inevitable tension between agile staff (minority) and non-agile staff (majority), can be catalyzed by an agile culture and how leaders and followers perceive the efficacy of this...

When agile and non-agile mindsets collide: mastering paradox management to navigate the VUCA

Purpose Today’s volatile, uncertain, complex, and ambiguous (VUCA) world is driven by technology, agile leaders, and their diverse teams comprising employees with both agile and non-agile mindsets. Since the VUCA environment is full of paradoxes, the question arises: How does the...

Health as a Decision Problem in BioCognitive Architectural Design: A Critical Review and Physiological–Regulatory Perspective

BioCognitive Architectural Design (BCAD) positions architecture as an active modulator of human biological and cognitive processes, yet the operational status of health within architectural decision-making remains unclear. Although evidence linking built-environment conditions to...

Surface Layer Engineering of 3D-Printed PET-G: Effect of Printing Parameters on Surface Roughness and Wettability—Considerations for Tribological Applications

The aim of this study was to investigate the effect of 3D printing parameters on the surface topography and surface wettability properties of PET-G samples intended for potential tribological applications. Surfaces produced with varying fill rates and two layer heights were exami...

Synergistic Regulation of Homoacetogenesis and Electrochemical Electron Supply Enhances CO2-Assisted Caproate Production from Waste Activated Sludge

Abstract Municipal sewage treatment has become an energy-intensive sector associated with substantial CO2 emissions and waste activated sludge (WAS) generation. Chain elongation (CE), as a promising carbon resource recovery route, enables the conversion of sludge-derived short-ch...

Influence of Ag2O on structural evolution, dissolution behavior and antibacterial response of sodium-calcium aluminoborophosphate glasses

The influence of low-level (0.25–0.75 mol%) silver oxide (Ag 2 O) substitution for Na 2 O on glass structure and in vitro dissolution of sodium–calcium aluminoborophosphate glasses was investigated. Spectroscopic analysis showed that the borate sub-network is dominated by BO 4 un...

Ordinal patterns with ties and tolerance provide a physiology-driven method to quantify cardiorespiratory interactions

We propose a new analytical approach based on ordinal pattern analysis to investigate respiratory heart rate variability (RespHRV, also called respiratory sinus arrhythmia), specifically modulation of heart rate across different phases of the respiratory cycle. The method uses RR...

Exploring the influence of reverberation on the perceived quality of time-scale modified speech

One of the methods to enhance speech intelligibility is to use time-scale modification (TSM) algorithms. This approach is especially useful in challenging acoustic environments caused by noise or reverberation, for instance. Unfortunately, TSM algorithms tend to introduce distort...

Energy Crop Cultivation of Miscanthus × giganteus on Biochar‐Amended Marginal Soils With Conventional and Waste‐Derived Fertilization: Biomass Allocation and Nutrient Dynamics Toward Closing Nutrient Loops

ABSTRACT Sustainable production of lignocellulosic biomass on marginal lands requires strategies that enhance yield while minimizing nutrient losses and supporting circular resource use. In this study, a two‐year (2023–2024) greenhouse meso‐scale experiment was conducted using Mi...

High-intensity circuit training as a potential modulator of serum PFAS levels in women

Per- and polyfluoroalkyl substances (PFAS) are persistent environmental contaminants with potential physiological effects. Their accumulation in the body is well documented; however, the impact of high-intensity circuit training (HICT) on serum PFAS levels remains poorly understo...

Air Quality Evidence in Road and Rail Transport Corridors: A Comparative Systematic Mapping Review

Aerosol emission and dispersion in transport corridors are central to urban air quality, human exposure assessment and transport planning. Although near-road air pollution has been widely studied, much less is known about analogous processes in rail-related environments, especial...

Design and experimental validation of dual-feed cavity-backed slot antenna diplexer for millimeter-wave dual-band 5G applications

Abstract This article presents the development of a novel cavity-backed dual-feed miniaturized antenna with an intrinsic self-diplexing property for millimeter-wave dual-frequency 5G applications. The proposed device is designed using a rectangular substrate integrated cavity loa...

Valorization of slag and banana leaf ash in five natural fiber-reinforced sustainable cementitious composites: early age mechanical and microstructural insights

Portland cement is highly energy-consuming, and its CO 2 emissions raise environmental concerns in the construction sector. This has prompted the desire for sustainable additional cementitious materials, such as slag and banana leaf ash (BLA). Nevertheless, the current literature...