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Wydziały Politechniki Gdańskiej
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Year 2025
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Monitoring of absorptive model biogas purification process using sensor matrices and gas chromatography
PublicationThis study examined the process of purifying model biogas using a new type of absorbent based on a Deep Eutectic Solvent (DES) and a commercially available absorbent (Genosorb) to remove acetone, toluene, and cyclohexane. The main aim of the research was to control the purification efficiency using gas chromatography (GC) and an alternative method based on sensor matrices (SM). As a result of comparing the multidimensional SM signals...
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"Morficzne dotykanie miasta. studium dla Gdańska". Stypendium dla Twórców Kultury Marszałka Województwa Pomorskiego na projekt
PublicationStypendium przyznawane jest corocznie dla wybranych komisyjnie twórców kultury na działania związane z województwem pomorskim. Tematem projektu będzie badanie form miasto-morficznych. Artystyczne poszukiwania w wybranych gdańskich lokalizacjach (Orunia, Stocznia, Zaspa) mają odnaleźć język form i zauważanych szczelin. Miejskie morfemy mogą być przedmiotem dociekań i analiz. Autorska metoda pracy sprawdzona w terenach przyrodniczych...
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Morse homology for the Hamiltonian action in cotangent bundles
PublicationIn this paper we use the gradient flow equation introduced in Asselle and Starostka (Calc. Var. 59: 113, 2020) to construct a Morse complex for the Hamiltonian action AH on a mixed regularity space of loops in the cotangent bundle T ∗M of a closed manifold M. Connections between pairs of critical points are realized as genuine intersections between unstable and stable manifolds, which (despite being infinite dimensional objects)...
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MoS2/NiO hybridized with reduced graphene oxide for glycerol and sorbitol electrooxidation
PublicationUsing glycerol and sorbitol as fuels in fuel cells has received limited attention in the literature. This study presents the synthesis of a composite material comprising molybdenum disulfide (MoS₂) and nickel oxide (NiO) via a hydrothermal method, which was subsequently hybridized with reduced graphene oxide (RGO) to enhance its catalytic performance. The catalytic activity of the MoS₂/NiO/RGO composite for the oxidation of glycerol...
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Multifunctional cerium-tetracycline coating for titanium implants: A dual approach to antibacterial and corrosion resistance
PublicationTitanium implants, such as Ti6Al4V, are widely used in dentistry and orthopedics due to their excellent biocompatibility and mechanical properties. However, bacterial infections following implantation remain a significant challenge. In this study, we modified the surface of Ti6Al4V with a cerium titanate layer loaded with tetracycline (Tetra), to enhance its bioactivity and antibacterial properties. Scanning Electron Microscopy...
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Multi-Joint Symmetric Optimization Approach for Unmanned Aerial Vehicle Assisted Edge Computing Resources in Internet of Things-Based Smart Cities
PublicationSmart cities are equipped with a vast number of IoT devices, which help to collect and analyze data to improve the quality of life for urban people by offering a sustainable and connected environment. However, the rapid growth of IoT systems has issues related to the Quality of Service (QoS) and allocation of limited resources in IoT-based smart cities. The cloud in the IoT system also faces issues related to higher consumption...
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MXene-based materials as adsorbents, photocatalysts, membranes and sensors for detection and removal of emerging and gaseous pollutants: A comprehensive review
Publication2D materials have garnered significant attention as potential solutions to various environmental challenges. Graphene, molybdenum disulfide, MXenes, and boron nitride have emerged as the most popular candidates among these materials. This article presents a comprehensive review and discussion on the emerging applications of MXenes in environmental engineering. MXenes have demonstrated immense potential as future materials for adsorption...
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Nano-adsorbent Modification by Deep Eutectic Solvents for Wastewater Treatment Applications
PublicationThe Greek “εύ” and “τήξις” term is the root of the “eutectic” word that refers to the low melting of mixture. Generally, an eutectic solvent depicts a mixture of components (at least one is in solid phase) that under particular ratios weak molecular interactions allow to obtain a mixture having melting point at a much lower temperature than that of each component (García-Álvarez 2019). Although A. P. Abbott et al. discovered the...
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Nano-Bio Soil Improvement (NBSI) with Micro-, Nano-, and Pico- Typha latifolia: a green material approach
PublicationSoil stabilization is a method of improving weak soils by adding different additives. Nano additives and materials represent a new technology and a revolution in soil mechanics and geotechnical engineering, used for soil stabilization, a branch of soil improvement. This research evaluates the particles of Nano- and Pico-Typha solution as a new biomaterial for soil improvement using nano and pico scales, bio, and soil mechanics...
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Nanoparticle Skin Penetration: Depths and Routes Modeled In-Silico
PublicationNanoparticles (NPs) are increasingly explored for targeted skin penetration, particularly for pharmaceutical and cosmetic applications. However, the complex system between NP properties, skin structure, and experimental conditions poses significant challenges in predicting their penetration depth and pathways. To what depth do NPs penetrate the skin, and which pathways do they follow? These are the questions we tried to answer...
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Nanotechnology meets radiobiology: Fullerenols and Metallofullerenols as nano-shields in radiotherapy
PublicationDespite significant advances in the development of radioprotective measures, the clinical application of radioprotectors and radiomitigators remains limited due to insufficient efficacy and high toxicity of most agents. Additionally, in oncological radiotherapy, these compounds may interfere with the therapeutic effectiveness. Recent progress in nanotechnology highlights fullerenols (FulOHs) and metallofullerenols (Me@FulOHs) as...
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Natural deep eutectic solvent mixed with powdered cork as a green approach for thin film SPME and determination of selected ultraviolet filters in lake waters
PublicationAn innovative and green determination method of ultraviolet filters, i.e. benzophenone-3 (BZ3), octocrylene (OCR), butyl methoxydibenzoylmethane (BDM) and ethylhexyl methoxycinnamate (EMC), in lake waters was proposed using thin film solid-phase microextraction (TF-SPME) and high-performance liquid chromatography with UV detection (HPLC-UV). A group of six solid natural deep eutectic solvents (NADESs) was tested along with compositions...
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Near-interval edge colorings of graphs
PublicationAn interval edge coloring of a graph is a proper edge coloring by integers such that the colors on the edges incident with any vertex form an interval of integers. Not all graphs are interval colorable; a simple counterexample is K3. A near-interval coloring is a proper edge coloring of a graph such that the colors on the edges incident with any vertex is either an interval or a near-interval, where the latter is an interval except...
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Net-zero policy and forward default risk in the energy sector:Evidence of corporate environmentalism using (a)symmetricmodels
PublicationThis study aims to examine the impact of the net-zero policy on forward default risk atthe firm level within the energy sector of the US, spanning over the period 2007–2021.The research employs Panel Vector Autoregression (PVAR) modeling, as well as linearand non-linear Autoregressive Distributed Lag (ARDL) models to investigate this rela-tionship. The findings suggest that the implementation of net-zero policy measures canhave...
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Neutral pH, multioxidants Fenton oxidation of dimethyl sulfoxide and acetamidophenol as water pollutant models
PublicationOrganic water pollution is calling for advanced remediation methods such as the Fenton process, yet actual procedures involve transition metals at acidic pH, and generate only one oxidant, the hydroxyl radical. Here we used a solution of magnesium ions, bicarbonate ions, and hydrogen peroxide at pH 7.4 to generate reactive oxygen species for degrading dimethyl sulfoxide and acetamidophenol, as models of water pollutants. The performance...
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New analytical laws and applications of interaction potentials with a focus on van der Waals attraction
PublicationThe paper aims to improve the efficiency of modeling interactions between slender deformable bodies that resemble the shape of fibers. Interaction potentials are modeled as inverse-power laws with respect to the point-pair distance, and the complete body-body potential is obtained by pairwise summation (integration). To speed-up integration, we consider the analytical preintegration of potentials between specific geometries such...
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New insight into selective catalytic reduction of nitrogen oxides on zirconia decorated with vanadium oxide
PublicationSolvothermal synthesis of zirconia decorated with vanadium oxide is investigated with the aim of using it in the catalytic conversion of nitrogen oxides. The effect of the mass ratio of vanadium (1.9; 3.8 and 5.7 wt%) to pure zirconia on the physicochemical and catalytic properties of the fabricated materials is demonstrated. The physicochemical characterization of catalysts indicates a slight reduction in the size of particles...
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New insights into structural, optical, electrical and thermoelectric behavior of Na0.5Bi0.5TiO3 single crystals
PublicationThe single crystals of lead-free Na0.5Bi0.5TiO3 were grown using the Czochralski method. The energy gaps determined from X-ray photoelectron spectroscopy (XPS) and optical measurements were approximately 2.92 eV. The current-voltage characteristics, depolarization current, dc (σdc) and ac (σac) electrical conductivity, and Seebeck coefficient of the crystals were investigated. The frequency/temperature-dependent electrical properties...
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Nitrogen Dioxide Monitoring by Means of Low-Cost Autono-mous Platform and Sensor Calibration via Machine Learning with Global Data Correlation Enhancement
PublicationAir quality significantly impacts the environment and human living conditions, with di-rect and indirect effects on the economy. Precise and prompt detection of air pollutants is crucial for mitigating risks and implementing strategies to control pollution within ac-ceptable thresholds. One of the common pollutants is nitrogen dioxide (NO2), high con-centration of which are detrimental to the human respiratory system and may lead...
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Noisy (Binary) Searching: Simple, Fast and Correct
PublicationThis work considers the problem of the noisy binary search in a sorted array. The noise is modeled by a parameter p that dictates that a comparison can be incorrect with probability p, independently of other queries. We state two types of upper bounds on the number of queries: the worst-case and expected query complexity scenarios. The bounds improve the ones known to date, i.e., our algorithms require fewer queries. Additionally,...
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Nonlinear theory and finite element analysis of cylindrical deformation of hyperelastic thick rods
PublicationThis paper presents a theory and finite element formulation for the plane strain problem of hyperelastic bodies undergoing cylindrical bending using one-dimensional C0 elements called ROD. The paper addresses several aspects characteristic of thick shells experiencing finite elastic deformations, which are not typically encountered in the analysis of classical thin shells. These include significant deformations through the shell's...
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Non-response to short-term ketamine use for treatment-resistant depression
PublicationBackground Ketamine is currently gaining attention as a rapid-acting antidepressant for treatment-resistant depression (TRD). However, many patients fail to respond, and limited data exist on predictors of non-response. This study aims to characterize the sociodemographic and clinical features associated with non-response to ketamine among TRD patients. Methods This is a post-hoc analysis of a naturalistic observational study,...
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Novel Method for Realistically Simulating the Deposition of Thin Films from the Gas Phase and its Application to Study the Growth of Thin Gold Film on Crystalline Silicon
PublicationWe present a novel approach for simulating thin film (TF) deposition from the gas phase at the atomistic scale, combining molecular dynamics (MD) and time-stamped force-bias Monte Carlo (tfMC). In this approach, MD, with its fine temporal resolution, captures fast events, such as incident atom-substrate collisions, while tfMC simulates slow relaxation processes, enhancing temporal scale coverage. The proposed approach also adequately...
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Novel nonsteroidal steroid sulfatase inhibitors containing glutamic acid unit
PublicationIn the present work, we designed and successfully synthesized novel steroid sulfatase (STS) inhibitors based on coumarin, tyramine, triazole, and flavone cores with an additional glutamic acid residue in the structure. The molecular modeling studies revealed that designed derivatives have potential to bind to the molecular target active site, at least theoretically. The biological activity of synthesized compounds was evaluated...
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Nowy algorytm: alfa max i beta min
Publication. In this paper we present an improved version of alpha max plus beta min algorithm. We have proposed a new algorithm for approximating the alpha max and beta min coefficients. This leads to less complex algorithm formulas. Hardware architecture of alpha max plus beta min algorithm is also presented and analyzed.
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Numerical Simulation of Light to Heat Conversion by Plasmonic Nanoheaters
PublicationPlasmonic nanoparticles are widely recognized as photothermal conversion agents, i.e., nanotransducers or nanoheaters. Translation of these materials into practical applications requires quantitative analyses of their photothermal conversion efficiencies (η). However, the value of η obtained for different materials is dramatically influenced by the experimental setup and method of calculation. Here, we evaluate the most common...
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Observation of quantum oscillations, linear magnetoresistance, and crystalline electric field effect in quasi-two-dimensional PrAgBi2
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Observation of quantum oscillations, linear magnetoresistance, and crystalline electric field effect in quasi-two-dimensional PrAgBi2
PublicationWe report the magnetic and magnetotransport properties with electronic band-structure calculation of the Bi square net system PrAgBi2. The magnetization and heat capacity data confirm the presence of a crystalline electric field (CEF) effect in PrAgBi2. Analysis of the CEF effect using a multilevel energy scheme reveals that the ground state of PrAgBi2 consists of five singlets and two doublets. The de Haas-van Alphen (dHvA) quantum...
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On a fully three-dimensional bending analysis of very thick smart composite cube-like bulk structures
PublicationHere we discuss the behaviour of very thick composite plates considering electro-magneto-elastic coupling of various types using fully three-dimensional (3D) kinematics. Published research highlights a lack of studies on the 3D mechanics of smart composite plates that integrate both higher-order (flexoelectric/flexomagnetic) and lower-order (piezoelectric/piezomagnetic) multiple physical fields (electro-magneto-elastic). The common...
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On nonlinear 3D electro-elastic numerical modeling of two-phase inhomogeneous FG piezocomposites reinforced with GNPs
PublicationThe novelty here comes from not only the perfect nonlinear three-dimensional (3D) electro-elasticity investigation but also the mixed material itself. The literature widely showed mechanical assessments on the piezoelectric structures; however, a lack of nonlinear three-dimensional elasticity studies has been witnessed on these kinds of smart materials. Therefore, a nonlinear 3D elasticity-piezoelectricity coupling is considered...
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On the Cover: Fatigue Damage Evolution in SS316L Produced by Powder Bed Fusion in Different Orientations with Reused Powder Feedstock
PublicationOn the Cover: Fatigue Damage Evolution in SS316L Produced by Powder Bed Fusion in Different Orientations with Reused Powder Feedstock. Exp Mech (2025). https://doi.org/10.1007/s11340-025-01179-w
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On the use of black tea waste as a functional filler for manufacturing self-stabilizing polyethylene composites: In-depth thermal analysis
PublicationThermal and oxidative stabilization are critical aspects in the processing and exploitation of polyolefins. Black tea contains many natural antioxidants, the largest group of compounds in its composition. When used as a filler for composite manufacturing, the thermo-oxidation process of polyethylene can be slowed down. Black tea waste (BTW) generated during the process of packing tea into sachets was introduced into a bio-based...
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On-site medical wastewater treatment enabling sustainable water reclamation: Merged advanced oxidation process for disinfection, toxicity, and contaminants removal
PublicationDue to increasingly scarce water resources worldwide, their reclamation is essential. Therefore, the water sector explores solutions that comply with EU requirements for water reuse. Wastewater advance oxidation processes (AOPs) are promising methods to increase the circular economy in the water sector. This investigation evaluated the combination of two different AOPs – electrolysis (EO) using boron diamond doped electrodes, and...
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Opposite effect of the Cu photodeposition on the ∙OH generation and diclofenac degradation depends on the exposed anatase facet
PublicationExposition of a specific crystal facets and modification with co-catalysts are often used in order to improve photocatalytic activity of a material. However, considering complexity of these interactions, it is still challenging to fully understand and predict activity of a specific system. Here, we report combination of the {0 0 1} and {1 0 1} crystal facets of anatase TiO2 with CuXO co-catalyst, applied for diclofenac degradation,...
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Optimal bandgap of a single-junction photovoltaic cell for the mobile Internet-of-Things
PublicationThe procedure for determining the maximum power of a single-junction photovoltaic cell operating in various types of lighting is presented. This is a key issue for photovoltaics powering the mobile Internet-of-Things (IoTs). The simulations performed are based on the detailed balance principle, without any of simplifying assumptions included in the Shockley-Queisser model. Optimal energy bandgap for diffuse solar light was found...
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Optimization of constitutive law for objective numerical modeling of knitted fabric
PublicationThis paper discusses the problem of macroscopic modeling a knitted technical fabric with the aim to determine a constitutive law for adequately modeling the material response under real-life load. As phenomenological, hyperelastic material laws reveal different parameters due to different test modalities used to identify such parameters, an optimization scheme is proposed to determine an objective solution. The study is conducted...
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Optimization of resource-aware parallel and distributed computing: a review
PublicationThis paper presents a review of state-of-the-art solutions concerning the optimization of computing in the field of parallel and distributed systems. Firstly, we contribute by identifying resources and quality metrics in this context including servers, network interconnects, storage systems, computational devices as well as execution time/performance, energy, security, and error vulnerability, respectively. We subsequently identify...
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Optimized metamaterials for design of enhanced-performance high order mode dipole-driven Yagi-Uda antenna for millimeter wave applications
PublicationThis paper presents the development of a Yagi antenna optimized for third-order mode operation within the millimeter-wave (mmWave) spectrum. A third-order mode driven dipole, along with a reflector, is introduced to enhance the antenna's gain. The rigorous numerical optimization procedure was employed to precisely adjust the dimensions and positions of the driven dipole, director, and reflectors. The optimized Yagi antenna operates...
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Optimizing conductivity in Na-V-Te-O glass through controlled heat treatment
PublicationSemiconducting Na2O-V2O5-TeO2 glasses with various Na2O contents were melted and subjected to controlled heating to improve conductivity. Topography analysis were performed using confocal microscopy and scanning electron microscopy on both as-quenched and heat-treated samples. X-ray diffraction confirmed the amorphous nature of the samples post-melting, with subsequent heating resulting in the formation of nanocrystallites primarily...
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Optimizing electrochemical removal of perfluorooctanoic acid in landfill leachate using ceramic carbon foam electrodes by coupling CFD simulation and reactor design
PublicationPerfluorooctanoic acid (PFOA), a persistent and bioaccumulative pollutant classified as a 'forever chemical', poses a global environmental and health risk due to its widespread use and resistance to degradation. The development of effective and efficient removal technologies is crucial to mitigate its long-term impacts. In this study, we present a novel approach to address the growing concern of emerging contaminants, particularly...
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Optimizing nature-based solutions for urban flood risk mitigation: A multi-objective genetic algorithm approach in Gdańsk, Poland
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Optimizing nature-based solutions for urban flood risk mitigation: A multi-objective genetic algorithm approach in Gdańsk, Poland
PublicationNature-based Solutions (NbS) have emerged as a sustainable approach to managing flood risks by enhancing natural water retention and reducing surface runoff in urban areas. As climate change and rapid urbanization exacerbate flood hazards, optimizing the spatial deployment of NbS is crucial for improving urban resilience and mitigating flood impacts. This study presents a comprehensive optimization framework for the spatial allocation...
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Optimizing the chemical removal of phosphorus for wastewater treatment: Insights from interpretable machine learning modeling with binary classification of elasticity and productivity
PublicationEnsuring compliance with total phosphorus (TP) discharge standards is essential in wastewater sector to alleviate eutrophication. This study focused on optimizing chemical removal of TP from a typical wastewater plant (WWTP) where poly aluminum chloride (PAC) is used after anaerobic-anoxic-oxic technology. With PAC consumption and TP removal in one-year daily data combined as input-output system, binary classifications of decoupling...
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Organizational Intelligence for Change Adaptability. The Knowledge, Learning, and Collaboration Cultures Approach
PublicationThis book outlines strategies for implementing the knowledge-learning-collaboration (KLC) approach effectively within different cultural contexts—adhocracy, clan, bureaucracy, and market—tailored to the specifics of management levels (team, division, and organization). Empirical research underscores that while the KLC approach enhances organizational intelligence, the impact varies depending on the type and strength of company...
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Pattern Reconfigurable Quasi Yagi Antenna with Origami Inspired Magic Spiral Cubes for Dynamic Indoor IoT Applications
PublicationThis paper presents a novel deployable antenna design with reconfigurable radiation patterns suitable for various indoor Internet of Things (IoT) applications. Inspired by origami, the antenna comprises a central monopole patch housed on a magic cube (MC-2) and two other modular units comprising stacks of magic cubes (MCs). In compact form, i.e., State-1, the antenna occupies a space of 50 mm, whereas in other states, it occupies...
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Paving the way for green cross-linker substances for the fabrication of polymer membranes — a review
PublicationChemical cross-linking in membrane fabrication aims to face limitations of polymer membranes, including poor chemical resistance, low mechanical stability, swelling, etc. Typical cross-linkers do not fit green chemistry and sustainable principles due to their toxicity. Thus, this article discusses the successful application of green cross-linkers (including organic acids — citric, gallic, ferulic, and tannic acid, calcium chloride,...
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Performance assessment of disposable carbon-based immunosensors for the detection of SARS-CoV-2 infections
PublicationWe designed, developed, and clinically tested two rapid antigen-based immunosensors for SARS-CoV-2 detection, enabling diagnosis and viral load quantification for under USD $2. In a first clinical study, a screen-printed disposable carbon-based (SPC) sensor was assessed on prospectively recruited adult participants classified into three study groups: healthy donors (n = 46); SARS-CoV-2-infected symptomatic patients (n = 58); and...
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Performance evaluation of green and conventional solvents in reversed-phase liquid chromatography based on the separation of non-polar and polar substances
PublicationThis study investigated the potential for replacing conventional solvents such as acetonitrile (ACN) and methanol (MeOH) with greener alternatives – ethanol (EtOH) and dimethyl carbonate (DMC) – in chromatographic separations. The aim was to assess whether these environmentally friendly solvents could achieve comparable separation performance while reducing the environmental impact of the analyses. Chromatographic separations were...
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Performance of vertical steel plate anchor in layered cohesionless soil
PublicationThis study investigated the performance of steel vertical anchor plates in multi-layered cohesionless soils. The research evaluated the effects of various parameters, such as soil density, number of layers, and anchor embedment depth, on the pullout capacity of the anchors. For the research, a container with the dimensions of was filled with sand at two different densities (dense and loose) up to a height of 80 cm. The study used...
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Performances, mechanisms, and strategies for methane removal via gas biofiltration
PublicationControl of methane emissions has attracted widespread attention in the context of worldwide efforts to alleviate the greenhouse effect. Biofiltration, a green and cost-effective treatment process, has been widely used for the purification of methane. Currently, there is still a lack of comprehensive information on methane biofiltration. Herein, the state-of-the-art development trends of methane removal via biofiltration were comprehensively...