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Wydziały Politechniki Gdańskiej
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Year 2025
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Tailoring oxide nanoparticle exsolution in La0.5Ba0.5-yCo1-xFexO3-δ
PublicationWe show that oxide nanoparticles (NPs) exsolve on La0.5Ba0.5-yCo1-xFexO3-δ (x = 0-1, y = 0 or 0.01) in oxidizing conditions. The phenomenon occurs only in Co-containing materials and depends on pO2 and pH2O pressures. Under dry conditions, the smallest NPs average about 30 nm, with 200-300 NPs/µm2 at pO2=5×10-5 atm. For pO2=1 atm, NP size increases to 100-200 nm, and population drops to a few to about 20 NPs/µm2 depending on A-site...
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Teal and neurodiverse organisations: leveraging teal management practices to foster workplace neurodiversity
PublicationPurpose Many organisations face challenges in effectively including neurodivergent individuals, often framing inclusion efforts around helping these employees adjust to “normal” practices. While such efforts aim for acceptance, they frequently fall short of realising the full potential of neurodivergent talent. We use teal management practices to embrace neurodiversity and position it as a vital organisational asset, adding valuable...
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TECHNICAL ASSESSMENT OF 120-YEAR-OLD RAILWAY RIVETED TRUSS BRIDGE
PublicationA 120-year-old railway truss bridge over the Bóbr River, Poland, is investigated in this paper from the mechanical and chemical properties of the materials by testing of old steel samples in a lab – through geodetic measurements, bathymetric measurements of the riverbed and dynamic measurements of bridge spans under service load – to the analysis of structural behaviour by finite-element modelling. The mechanical and chemical properties...
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Technological Considerations of Periodic Repair Works of Concrete Industrial Floors
PublicationConcrete floors are among the elements in construction facilities whose design requires engineering experience, workmanship requires the maintenance of a technological regime, while during their operation it is necessary to conduct periodic repairs. Concrete floors are most often used as working and communication space in industrial facilities, and very often they are also a functional element in objects that are immovable monuments....
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Technological content of export diversification—Evolution along the economic growth process
PublicationExports from high-income countries are three times more diversified than those from low-income economies. We provide a new tech-based interpretation of the stages of diversification accompanying the economic growth paths of countries. Using the decomposition properties of the relative Theil index in a sample of 160 countries (1996–2018), we reveal that export diversification is driven mainly by changes in the variety of non-tech...
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Tensile behavior evaluation of two-stage concrete using an innovative model optimization approach
PublicationTwo-stage concrete (TSC) is a sustainable mate- rial produced by incorporating coarse aggregates into formwork and filling the voids with a specially formulated grout mix. The significance of this study is to improve the predictive accuracy of TSC’s tensile strength, which is essential for optimizing its use in construction applications. To achieve this objective, novel and reliable predictive models were developed using advanced...
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Text analytics for co-creation in public sector organizations: a literature review-based research framework
PublicationThe public sector faces considerable challenges that stem from increasing external and internal demands, the need for diverse and complex services, and citizens’ lack of satisfaction and trust in public sector organisations (PSOs). An alternative to traditional public service delivery is the co-creation of public services. Data analytics has been fueled by the availability of immense amounts of data, including textual data, and...
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The Adsorption of Ru-Based Dyes on the TiO2 Surface to Enhance the Photovoltaic Efficiency of Dye-Sensitized Solar Cell Devices
PublicationAdsorption of mononuclear tris(bipyridine) ruthenium(II) complexes and binuclear tris(bipyridine) ruthenium(II) complexes equipped with carboxyl groups (-COOH) on the (111) surface of TiO2 crystal in anatase form was modeled using Monte Carlo simulations, applying the Universal force field. It was shown that the adsorption efficiency of the ruthenium-based dyes on the TiO2 surface depends on the position of the anchoring -COOH...
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The characteristics of the surface structure obtained in a low plasticity burnishing process in which the jumping wave occurred
PublicationJumping wave formation in front of the processing tools occurs during low plasticity burnishingmethods. It significantly disturbs the plastic deformation of surface structures process. The wavecauses also additional structures to appear on the processed surface such as additional dales, seemsand laps. Furthermore, the rise of processing burnishing force causes significant increase the depthof the surface structure dales which are...
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The conceptual framework of the neurodiversity organisational maturity model (NOMM) to support the employability of neurodivergent individuals
PublicationPurpose – According to estimates, up to 20% of the population may be neurodivergent, but there is a significant gap in the area of theory applied in the context of neurodiversity and work. Therefore, the objective of this article is to develop a conceptual framework for the Neurodiversity Organisational Maturity Model (NOMM), including its components and determinants, to support the employability of neurodivergent individuals. Design/methodology/approach...
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The determinants of European universities patenting and co‑patenting with companies
PublicationThis study examines the determinants of European universities patenting and co-patenting with companies. The analysis takes into account more than 400 universities from 17 countries over the period 2011–2018. We test several determinants of the commercial activity of universities, such as: student enrolment (size), age, public or private nature of the institution, students per academic staff, publications per academic staff (research...
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The effect of hydrothermal carbonization (HTC) on entrained flow steam gasification of sewage sludge. Experimental validation of various gasification models
PublicationProper sewage sludge management is challenging due to legal requirements, environmental concerns, and logistical complexities. Steam gasification offers a promising solution by producing high-quality syngas. While research has largely focused on fixed bed gasifiers, their scalability limitations restrict their economic viability. Entrained flow gasifiers, scalable to hundreds of megawatts as demonstrated in coal gasification, present...
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The Effect of Pretreated Titanium Surface Topography on the Properties of Electrophoretically Deposited Chitosan Coatings from Ethanol-Based Suspensions
PublicationThis study investigated the influence of surface preparation methods on the microstructure, chemical composition, wettability, corrosion resistance, and adhesion of chitosan coatings on titanium substrates for biomedical applications. Titanium samples were subjected to grinding with abrasive papers of gradations #800, #1200, and #2000, electrochemical anodization, and etching. Surface characterization revealed that the etched samples...
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The effect of PV modules on temperature conditions of nearby power cables
PublicationThe highest permissible load of power cables (ampacity) depends strongly on the ambient temperature, which in the case of cables surrounded by free air is generally assumed to be 25°C. Considering the installation of photovoltaic (PV) modules, the thermal conditions for the cables connected to these modules may be very unfavorable. The cables are laid under the module and the space underneath it is heated by this module. The aim...
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The effect of substituents on the P–P and P=C bond properties in phosphanylphosphaalkenes
PublicationA new lithium salt of diphosphane, (iPr₂N)PhP-P(SiMe₃)Li (2), featuring two electronically differentiated substituents, is presented. Its reaction with benzophenone was then carried out, yielding a novel phosphanylphosphaalkene (3). The isolated compound was subsequently treated with nBuLi and PhLi to obtain stable activators (3a and 3b) of the potential polymerization of phosphorus-rich compounds.
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The Impact of 8- and 4-Bit Quantization on the Accuracy and Silicon Area Footprint of Tiny Neural Networks
PublicationIn the field of embedded and edge devices, efforts have been made to make deep neural network models smaller due to the limited size of the available memory and the low computational efficiency. Typical model footprints are under 100 KB. However, for some applications, models of this size are too large. In low-voltage sensors, signals must be processed, classified or predicted with an order of magnitude smaller memory. Model downsizing...
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The impact of China’s One-Belt One-Road initiative on international trade and global value chains
PublicationThis study examines the potential effects of China’s ‘One-Belt One-Road’initiative (OBOR) on trade flows and global value chain (GVC) connections.The empirical analysis is based on the augmented trade gravity model, which comprises 186 economies and 199 of their partners from 2000 to 2018. We also estimate the gravity model for involvement in GVC (domestic value added in intermediate exports, foreign value added in exports, and...
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The impact of goat hair as a natural animal fiber on properties of the lightweight cement composite
PublicationThe increasing demand for sustainable and eco-friendly construction materials has prompted the exploration of natural fibers as reinforcement in cement composites. This study investigates the potential of goat hair as a natural fiber reinforcement in lightweight cement composites to enhance mechanical properties and sustainability. The research evaluates goat-hair-reinforced composites’ flexural and compressive strengths at 7 and...
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The Impact of Hybrid Flame Retardant Compositions on the Performance of Foamed Flexible Polyurethane/Ground Tire Rubber Composites
PublicationCurrent sustainability-oriented trends affect polyurethane (PU) materials and stimulate the incorporation of recycled or waste-based materials as fillers. Ground tire rubber (GTR) poses as an auspicious candidate due to the excellent performance of car tires. Despite the benefits related to the mechanical performance, it contributes to the increasing flammability of the resulting composites. Herein, presented work assessed the...
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The impact of mGlu2 or mGlu5 receptor activators on the production of l-arginine derivatives and the expression of PRMT5 or DDAH1 enzymes in animal models of cognitive decline
PublicationL-arginine derivatives (ADMA, SDMA, NMMA) are endogenous inhibitors of nitric oxide (NO֗) production, which is essential in critical brain processes including blood-brain barrier (BBB) integrity and long-term potentiation (LTP). ADMA and NMMA are degraded by dimethylarginine dimethylaminohydrolase 1 (DDAH1) and protein arginine methyltransferase 5 (PRMT5) is an emerging epigenetic enzyme that mainly represses transcription of target...
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The influence of brace to chord rotational connection stiffness on stability of the truss
PublicationThe paper is devoted to the numerical analysis of the roof truss subjected to upward wind loading and braced at the tensioned top chord. The linear buckling analysis were performed for the beam and shell model of the structure. As the result the influence of rotational connection stiffness between the brace and the top chord on the truss stability was appointed. The biaxial strength testing machine was used to conduct the experimental...
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The influence of chitosan's molecular weight, concentration, and dissolution method on the properties of electrophoretically deposited coatings on the Ti13Nb13Zr alloy surface
PublicationIn this study, the effects of molecular weight (high, medium, and low), concentration (0.1 and 0.5 %) and dissolution method (in a rarely used hydroxyacetic acid and utilizing a novel CO2 saturation) of chitosan on the microstructure, chemical composition, wettability, surface roughness, adhesion, corrosion resistance and antibacterial activity of chitosan coatings electrophoretically deposited (10 V, 1 min) on β titanium alloy...
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The influence of printing strategies on the fatigue crack growth behaviour of an additively manufactured Ti6Al4V Grade 23 titanium alloy
PublicationThe selective laser melting (SLM) process, a type of laser powder-bed fusion (LPBF) in additive manufacturing (AM), uses a high-power density laser to melt metallic powders. This study involved 3D printing Compact Tension (CT) specimens from titanium alloy Ti6Al4V, known for its rigidity, corrosion resistance, and biocompatibility, making it suitable for aerospace and medical applications. To predict fatigue life, it is essential...
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The influence of selected metal oxides and laser modification on the surfaces of titanium alloys – Bibliometric and systematic review
PublicationManufacturing of oxide coatings (ZnO, ZrO2 , CuO) and laser processing are methods for modifying the surface of titanium and its alloys. It is particularly useful in implantology, where these techniques allow for proper connection of the implant to human tissue. The article consists of two complementary parts: a bibliographic review and a literature survey. The results of a bibliographic analysis conducted for a set of 429 publications...
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The interactions of Pu22 G-quadruplex, derived from c-MYC promoter sequence, with antitumor acridine derivatives – an NMR/MD combined study
PublicationUnsymmetrical bisacridines (UAs) represent a novel class of anticancer agents that exhibit significant antitumor activity against a wide range of cancer cell lines and solid tumors in vivo. UAs consist of two different acridine-based ring systems, which are connected by an aminoalkyl linker. Recent studies have demonstrated that UAs can suppress the c-MYC protooncogene, which is overexpressed in many tumor types. As a proposed...
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The Laser Processing of the Stainless-Steel Surface Layer of a Heat Exchanger Membrane in Order to Enhance Its Heat Transfer Coefficient
PublicationResearch on temperature regulation is essential for ensuring thermal comfort and optimizing machine performance. Effective cooling systems are critical in industrial processes and everyday electronic devices in order to prevent overheating. Laser-modified heat exchangers can enhance heat dissipation without increasing weight, addressing the need for energy-efficient solutions in the market. The main aim of this experimental research...
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The Mathematical Regularity Coefficient for Facade Patterns
PublicationThis article investigates whether the visual regularity of a building's facade can objectively be expressed by a numerical value. Grounded in universal neurobiological principles and modern digital image processing methods from mathematical and information theories, this study analyzes 245 architectural compositions using an interdisciplinary approach that combines perception, mathematics, programming, and architectural theory....
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The role of nanomaterials in tailoring electromembrane extraction performance: A review
PublicationElectromembrane extraction (EME) is a membrane-based miniaturized microextraction technique used to extract ionized analytes from complex mixtures. EME extracts can be analyzed using all major analytical instrumental techniques. The major advantages of EME include short extraction time, low consumption of organic solvents and chemicals, high extraction capability, high selectivity, and efficient sample cleanup. Numerous modifications...
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The role of sand filler in enhancing the mechanical properties of polymethylmethacrylate composites
PublicationPolymethylmethacrylate (PMMA) is widely used in biomechanics and civil engineering for its properties. While various fillers have been studied to enhance mechanical properties of PMMA, the impact of sand as a filler has been less explored. This study investigates the effects of varying sand content on the mechanical properties and workability of PMMA-based resin composites, assessing their suitability for biomechanical applications....
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The solvent-assisted dispersive solid-phase extraction method revisited. Application for the determination of anionic surfactants
PublicationA new approach in solvent-assisted dispersive solid-phase extraction (SA-DSPE) procedure using a supercooled liquid was developed. It demonstrates the first use of a supercooled liquid in this technique, in particular, and in chemical analysis in general. Moreover, to the best of our knowledge, this is the first work devoted to the determination of the total concentration of anionic surfactants (as LAS, Linear alkylbenzene sulfonate)...
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The state of preservation of medieval street-square village in the landscape of northern Poland
PublicationThe article focuses on the preservation of traditional rural cultural landscapes in northern Poland, which were created in the 14th century as a result of the settlement of the Teutonic Knights under Kulm Law. The research covered 21 unique street-square villages in the Vistula Delta and included, among other things, an analysis of the spatial layout of the villages, their social functions, the presence of historical monuments...
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The strategies of nutrient removal compounds from wastewater by using aquatic plants in the Green deal implementation
PublicationThe aim of the study was to determine the efficiency of wastewater treatment from nitrogen compounds - ammonium, nitrite, nitrate, and phosphate - using Lemna minor and Spirogyra sp. in the context of the strategies toward Green Deal Implementation. Meanwhile, the various biological treatment methods of nutrients according to the value-added and application prospects were also discussed as a future solution in the Circular Economy...
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The tensile strength of different methods of anterior cruciate ligament graft end stitches in an animal model
PublicationBackground: There are several methods for stitching graft ends in anterior cruciate liga-ment reconstructive surgery. The tendon-suture construct should be able to withstand ten-sioning until the graft is stabilized with an implant. Methods: In this biomechanical study, 40 porcine lower extremity tendons ends were stitched with No. 2 suture, secured to the grips of the Zwick-Roell testing machine and tested for load at failure...
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Theoretical background of the operating parameters of the satellite working mechanism of the hydraulic positive displacement machine
PublicationThis article describes a method for determining the instantaneous geometric working volume of a satellite mechanism that is commonly used as a working mechanism in positive displacement machines (pump and motor). A new mathematical formula for calculating the instantaneous geometric working volume as a function of the angle of rotation of the shaft (rotor) has been proposed. For the satellite mechanism operating as a pump, the...
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Thermal affection on hydrogen diffusion in different structures of nickel alloy
PublicationPurpose Based on previous research, we choose nickel alloy 718 as the research material and use finite element analysis (FEA) to simulate the hydrogen diffusion in lattice, grain, boundary grain and dislocation in different thermal loads, aiming to understand the intricate mechanisms underlying hydrogen diffusion in nickel-based alloys, which will contribute to driving progress in the field of hydrogen diffusion for understanding...
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Thermal pathways for sustainable waste management: Leveraging leather tannery waste as a renewable energy source
PublicationThe growing production of consumer goods increases waste generation, challenging disposal systems. The aim of the work was to use real data to propose a closed loop leather production process, so as to eliminate storage and use the potential of thermal processes for energy recovery. Such actions allow for improving the company's economic balance, but above all for a positive environmental impact. The tanning industry generates...
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Thermoelectric and electrical properties of triple-conducting multicomponent oxides based on substituted barium cerate-zirconate
PublicationMulticomponent oxides often have exceptional thermal stability and interesting electronic properties. The present work presents the thermoelectric and electrical properties of the Ba(Zr0.2Hf0.2Sn0.2Ti0.2Fe0.2)O3−δ and Ba(Zr0.1Hf0.1Sn0.1Ti0.1Co0.1Ce0.1Bi0.1Fe0.1Y0.1Zn0.1)O3−δ multicomponent perovskites. Single-phase cubic perovskites were synthesized using the solid-state reaction method. They were characterized using X-ray...
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Thermoelectric and electrical transport properties of mixed-conducting multicomponent oxides based on Ba(Zr,Ce)O3-δ
PublicationIn this work, the chosen physicochemical properties of single-phase multicomponent oxides BaTi1/8Fe1/8Co1/8Y1/8Zr1/8Sn1/8Ce1/8Hf1/8O3-δ and BaTi1/9Fe1/9Co1/9Y1/9Zr1/9Sn1/9Ce1/9 Hf1/9Bi1/9O3-δ were studied. The microstructure of the compounds strongly depended on the presence of bismuth in the structure. The electrical transport studies showed a level of electrical conductivity of ∼10−3 - 10−2 S/cm in the temperature range 673–1073...
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Three-Space as a Quantum Hyperlayer in 1+3 Dimensions: A Case Study in Quantum Space and Time
PublicationWe discuss a formalism where a universe is identified with the support of a wave function propagating through space–time. The dynamics are of a squeezing type, with shrinking in time and expanding in space. As opposed to classical cosmology, the resulting universe is not a spacelike section of some space–time but a hyperlayer of a finite timelike width, a set which is not a three-dimensional submanifold of space–time. The universe...
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Topology, Size, and Shape Optimization in Civil Engineering Structures: A Review
PublicationThe optimization of civil engineering structures is critical for enhancing structural performance and material efficiency in engineering applications. Structural optimization approaches seek to determine the optimal design, by considering material performance, cost, and structural safety. The design approaches aim to reduce the built environment’s energy use and carbon emissions. This comprehensive review examines optimization...
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Toward 6G Optical Fronthaul: A Survey on Enabling Technologies and Research Perspectives
PublicationThe anticipated launch of the Sixth Generation (6G) of mobile technology by 2030 will mark a significant milestone in the evolution of wireless communication, ushering in a new era with advancements in technology and applications. 6G is expected to deliver ultra-high data rates and almost instantaneous communications, with three-dimensional coverage for everything, everywhere, and at any time. In the 6G Radio Access Networks (RANs)...
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Towards developing fully sustainable elastomers: the role of chemistry
PublicationThe development of sustainable polymer materials is no longer just an option but a necessity. Elastomers are indispensable members of the polymer family due to their high tensile strength, durability, energy absorption capabilities, and excellent resistance to fatigue and environmental degradation. Elastomers have found a unique role in diverse industries, like transportation, automotive, aerospace, construction, and sports. However,...
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Transforming organic waste: Cabbage-derived carbon containing copper for electrochemical sensing of ascorbic acid
PublicationThis study presents a sustainable approach for transforming food waste into functional electrochemical materials by utilizing copper-enriched cabbage leaves as a precursor for carbon-based sensors. Chinese cabbage was soaked in aqueous solutions of Cu(NO₃)₂, CuSO₄, and Cu(CH₃COO)₂, followed by pyrolysis, which resulted in carbona- ceous materials with distinct structural and electrochemical characteristics. Raman spectroscopy and...
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Trimethyl Lock Based Tools for Drug Delivery and Cell Imaging – Synthesis and Properties
PublicationTrimethyl lock (TML) systems have become increasingly important in medicinal and bioorganic chemistry, particularly for their roles in the targeted delivery of therapeutic agents and as integral components in fluorogenic probes for cellular imaging. The simplicity and efficiency of their synthesis have established TML systems as versatile platforms for the controlled release of active molecules under particular physiological conditions....
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TRWAŁOŚĆ BETONOWYCH POSADZEK PRZEMYSŁOWYCH W ASPEKCIE ICH ŚCIERALNOŚCI
PublicationCelem artykułu jest wskazanie najczęściej popełnianych błędów przyczyniających się do nadmiernej ścieralności betonowych posadzek przemysłowych, których górna powierzchnia została zabezpieczona suchą posypką aplikowaną na wilgotną nawierzchnię w początkowym okresie twardnienia młodego betonu. W artykule podano także propozycje sposobu usuwania opisanych wad, oraz dyskusję na temat współczesnych metod diagnostyki betonowych posadzek...
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Tuning charge transport in polydopamine tetramers via oxidation state and orientation in supramolecular junctions with gold contacts: An ab initio DFT study
PublicationThis work presents a comprehensive computational investigation of gold-polydopamine supramolecular junctions and their electronic properties using density functional theory (DFT) and non-equilibrium Green's functions (NEGF) methodology. Non-covalent interactions between gold and PDA models are described in the slab configuration, and the molecular junction. By modulating the oxidation state, molecular structure, and surface arrangements...
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Tuning the Adhesive Strength of Functionalized Polyolefin-Based Hot Melt Adhesives: Unexpected Results Leading to New Opportunities
PublicationThe development of lightweight, often multi-component products requires adaptable and robust bondingsolutions. Hot melt adhesives increasingly attract industrial interestas they combine good adhesive strength, facile processability, andcost-efficiency. Recently, our group has reported on the remarkableadhesive performance of hydroxyl-functionalized propylene-basedcopolymers in bonding both polar and nonpolar surfaces. Theobtained...
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Ultra-Compact Quintuple-Band Terahertz Metamaterial Biosensor for Enhanced Blood Cancer Diagnostics
PublicationCancer and its diverse variations pose one of the most significant threats to human health and well-being. One of the most aggressive forms is blood cancer, originating from bone marrow cells and disrupting the production of normal blood cells. The incidence of blood cancer is steadily increasing, driven by both genetic and environmental factors. Therefore, early detection is crucial as it enhances treatment outcomes and improves...
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Unlocking the electrochemical performance of glassy carbon electrodes by surface engineered, sustainable chitosan membranes
PublicationChitosan coatings, derived from crustacean shell waste, possess inherent biocompatibility and biodegradability, rendering them suitable for various biomedical and environmental applications, including electrochemical biosensing. Its amine and hydroxyl functional groups offer abundant sites for chemical modifications to boost the charge transfer kinetics and provide excellent adhesion, enabling the construction of robust electrode-coating...
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Unlocking the Secrets of Human Milk: Isolation and Characterization of Extracellular Vesicles
PublicationExtracellular vesicles from human milk (HMEVs) are crucial for neonatal development, immune modulation, and protection against pathogens. However, the lack of standardized isolation and characterization protocols poses significant challenges. This review aims to evaluate and compare various methods for the isolation and characterization of HMEVs, highlighting their effectiveness and potential applications. Preliminary purification...