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Gdańsk University of Technology
Among the 1 000 best universities in the world
Gdańsk University of Technology is one fo the 8 Polish universities classified in the prestigious Academic Ranking of World Universities (ARWU), also known as the Shanghai Ranking. Each year, ARWU ranks over 2 000 universities and publishes a list of top 1 000 best ones. Gdańsk University of Technology was classified in the 801-900 range in 2021.
The highest standards in Europe for conducting research
In 2017, the European Commission granted Gdańsk Tech the right to use the prestigious HR Excellence in Research logo. Gdańsk University of Technology was thus recognized as an institution that creates some of the best working and development conditions for researchers in Europe.
One of the best universities in Poland
Gdańsk University of Technology is the second-best research university in Poland in the ‘Initiative of Excellence - Research University’ competition of the Ministry of Science and Higher Education. It is here where inventions used in Poland and around the world are created - communication with the use of eyes, an ecological medicine for osteoporosis, biodegradable materials and many more.
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Catalog Publications
Year 2025
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Pulsed GTAW joint of P92 steel and Inconel 625: microstructure and mechanical properties
PublicationIn the present work, the relationship between microstructure and mechanical properties has been investigated for the dissimilar welded joint of P92 steel and Inconel 625, fabricated using the pulsed current gas tungsten arc welding (GTAW) process. Microstructural investigation revealed that the pulsed current resulted in fner equiaxed dendrites in the bulk weld metal, while columnar dendrites were observed in the weld metal near...
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Quality Evaluation of Small Features Fabricated by Fused Filament Fabrication Method
PublicationThe purpose of this research was to evaluate the quality of small features fabricated by the fused filament fabrication (FFF) method. The samples containing circular and square cross-sections through holes with different dimensions, lengths, and orientation angles were printed from ABS (acrylonitrile butadiene styrene) filament. The adopted optical inspection method allowed us to conduct observations of individual features and...
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Quality of Consumed Energy as a Key Element in the Development of Processes of Energy Transformation in the European Union Countries
PublicationThe process of energy transformation is one of the crucial elements of the process of improvement of the quality of consumed energy. The aim of the research is to assess the European Union countries in terms of the quality of their consumed energy and the speed of adaptation of this aspect of the energy transformation process. We assess the quality of consumed energy by means of the synthetic measure obtained by means of the dynamic...
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Quasilinear elliptic problem in anisotropic Orlicz–Sobolev space on unbounded domain
PublicationWe study a quasilinear elliptic problem $-\text{div} (\nabla \Phi(\nabla u))+V(x)N'(u)=f(u)$ with anisotropic convex function $\Phi$ on the whole $\R^n$. To prove existence of a nontrivial weak solution we use the mountain pass theorem for a functional defined on anisotropic Orlicz-Sobolev space $\WLPhispace(\R^n)$. As the domain is unbounded we need to use Lions type lemma formulated for Young functions. Our assumptions broaden...
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RAGN-R: A multi-subject ensemble machine-learning method for estimating mechanical properties of advanced structural materials
PublicationThe utilization of advanced structural materials, such as preplaced aggregate concrete (PAC), fiber-reinforced concrete (FRC), and FRC beams has revolutionized the field of civil engineering. These materials exhibit enhanced mechanical properties compared to traditional construction materials, offering engineers unprecedented opportunities to optimize the design, construction, and performance of structures and infrastructures....
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Ranking the rankers. An analysis of science-wide author databases of standardised citation indicators
PublicationIn this paper, we investigate the properties of the science-wide author databases’ stand- ardised citation indicators produced since 2015 by a team of researchers led by John P. A. Ioannidis. Based on data from Scopus, the researchers published close to 200,000 of the most-cited authors across all scientific fields and ranked them using a composite indica- tor that includes six citation metrics (total citations; Hirsch h-index;...
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Rapid Global Antenna Design by Simplex Regressors and Multi-Resolution Simulations
PublicationOptimization methods have been rapidly entering the realm of antenna design over the last several years. Despite many available algorithms, practical optimization is demanding due to the high electromagnetic (EM) analysis cost necessary for dependable antenna assessment. This is particularly troublesome in global parameter tuning, routinely conducted using nature-inspired procedures. Unfortunately, these methods are known for their...
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Rapid methods for microorganism quantification in human milk: Possibilities and evaluation
PublicationThis study evaluates the potential of rapid microbiological methods, traditionally used for food and environmental samples, to assess human milk (HM) quality in Human Milk Banks. Several methods, including a bioluminescence, the Micro Biological Survey (MBS) colorimetric method, triphenyltetrazolium chloride (TTC) reductase test, and flow cytometry (BacSomatic™️), were compared to the PN-EN ISO 4833–1:2013-12 reference method....
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RCS Enhancement of Millimeter Wave LTCC Van Atta Arrays With 3-D Printed Lenses for Chipless RFID Applications
PublicationIn this paper, we present a new method to enhance the radar- cross section (RCS) of Van Atta arrays which can be used in chipless radio-frequency identification tags operating in millimeter wave frequency bands. Small planar Low-Temperature Co-fired Ceramic (LTCC) Van Atta arrays, that are durable and can operate in harsh environments, are combined with 3-D printed lenses to increase or modify the shape of their RCS by up to 10...
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Recent Research Progress in the Abrasive Machining and Finishing of Additively Manufactured Metal Parts
PublicationAdditive manufacturing (AM) has revolutionized the production of complex geometrical parts with metals; however, the usual layer-by-layer deposition results in poor surface quality and unpredictable surface integrity. Abrasive machining and finishing techniques play vital roles in counteracting these challenges and qualifying AM parts for practical applications. This review aims to present recent research developments concerning...
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„Reconnecting With Your Culture. Experiences between Poland and India" Fondazione Magnani, Universita di Pavia.Prezentacja na międzynarodowym seminarium naukowym
PublicationOn Tuesday 11 March 2025, an international meeting was held at the Magnani Foundation auditorium ‘Reconnecting With Your Culture’, promoted by the architectural restoration course of the University of Pavia, chaired by Professor Olimpia Niglio, in in collaboration with the Magnani Foundation. The backdrop of the meeting was the early Romanesque Basilica of Santa Maria Maggiore in Lomello, one of the oldest in the Apennine peninsula,...
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Recycling organic waste to biochar amended soils stabilizes Miscanthus x giganteus growth
PublicationSix treatments including straw biochar and its blends with organic waste (a mixture of anaerobically digested model kitchen waste, stillage and its enhancement with the fish waste digestate, both solid and liquid fractions) were tested via greenhouse experiment using fast-growing and pollution-resilient Miscanthus × giganteus. The four months long tests under spring/summer conditions in northern Poland with six fertiliser loads...
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Replica road pavements for rolling resistance measurements
PublicationDue to the need to strictly control the measurements, tire manufacturers strive to conduct most of the tests indoors. This allows them to perform them regardless of weather conditions, all the yearlong. Currently, a lot of research concerns the rolling resistance of tires. These include both development activities and mandatory measurements related to the granting of environmental labels. Unfortunately, standardized tests are conducted...
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Resonant and nonresonant excitation of waves in a planar magnetosonic flow
PublicationForced propagation of perturbations in a magnetosonic wave are considered. The driving force may be caused by stimulated Mandelstam–Brillouin scattering of optic waves or by intense magnetosonic exciter. Some heating-cooling function which takes into account radiative cooling and unspecified heating is taken into consideration, as well as nonlinearity of a medium. Both these factors make the excitation particular. The analytical...
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Responsive and proactive market orientation and hospital financial performance: The mediating effect of service program innovativeness
PublicationPURPOSE: The study aims to investigate the direct and indirect relationships among market orientation, service program innovativeness, and the financial performance of hospitals. Two types of market orientation – responsive and proactive – were considered, along with two dimensions of service program innovativeness: meaningfulness and novelty. METHODOLOGY: T he study gathered data through a survey conducted on a random sample of...
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Restrained differential of a graph
PublicationGiven a graph $G=(V(G), E(G))$ and a vertex $v\in V(G)$, the {open neighbourhood} of $v$ is defined to be $N(v)=\{u\in V(G) :\, uv\in E(G)\}$. The {external neighbourhood} of a set $S\subseteq V(G)$ is defined as $S_e=\left(\cup_{v\in S}N(v)\right)\setminus S$, while the \emph{restrained external neighbourhood} of $S$ is defined as $S_r=\{v\in S_e : N(v)\cap S_e\neq \varnothing\}$. The restrained differential of a graph $G$ is...
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Reusable Biosensor for Easy RNA Detection from Unfiltered Saliva
PublicationBiosensors are transforming point-of-care diagnostics by simplifying the detection process and enabling rapid, accurate testing. This study introduces a novel, reusable biosensor designed for direct viral RNA detection from unfiltered saliva, targeting SARS-CoV-2. Unlike conventional methods requiring filtration, our biosensor leverages a unique electrode design that prevents interference from saliva debris, allowing precise measurements....
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Ribes nigrum leaf extract downregulates proinflammatory gene expression and regulates redox balance in microglial cells
PublicationBackground: This study focuses on the investigation of the antioxidant and anti- inflammatory activities of alcohol extracts from Ribes nigrum leaves on murine BV-2 microglial Wt and Acyl-CoA oxidase 1 deficient (Acox1−/−) cell line models, useful for the investigation of some neurodegenerative disorders. Methods: The extract chemical composition was analyzed via LC-Q-Orbitrap HRMS. Various assays, including DPPH, MTT, and H2DCFDA,...
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Road Safety as a Component of Social and Economic Costs in Road Network Functional Assessment
PublicationThis study examines road safety as a part of social and economic costs in sustainable development management. The research focuses on the road network in Warmia-Masuria Voivodeship, Poland, analyzing 180 homogeneous sections of regional roads totaling over 1,800 km. Two methods are employed: reactive and proactive. The reactive method assesses risk based on accident density and accident cost density, classifying road sections into...
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Room vs. Body Temperature to Evaluate Electrical Interface Parameters of State-Of-The-Art PEDOT : PSS-Based Electrodes
PublicationIn this work, the effect of the simulated body fluid temperature on the electrical interface parameters of the state-of-the-art PEDOT-PSS electrode was studied. PEDOT-PSS was synthesized by electrodeposition on graphite and gold-coated-graphite electrodes. All electrochemical measurements were performed in phosphate-buffered saline aqueous solution (pH 7.4) at room temperature (25 °C) and body temperature (37 °C). The results of...
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Secondary Structure in Free and Assisted Modeling of Proteins with the Coarse-Grained UNRES Force Field
PublicationSecondary structure is a solid scaffold on which the three-dimensional structure of a protein is built. Therefore, care must be taken to reproduce the secondary structure as accurately as possible in the simulations of protein systems. In this chapter, we summarize the physics-based energy terms that govern secondary-structure formation, the auxiliary restraints on secondary structure derived from bioinformatics and from the experimental...
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Selection of the technology of repair works of concrete industrial floors in view of their degree of technical dysfunctions
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. They are most often used as working and communication space in industrial facilities. Regardless of the place of installation, concrete...
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Self-Isolation in MIMO Array Using Mode Diversity
PublicationA new isolation technique is proposed for multiple-input multiple-output (MIMO) microstrip patch antenna (MPA) arrays utilizing mode’s diversity. Typically, similar modes are excited in each element of the MIMO array. However, the proposed MIMO array uses two elements of different sizes excited in distinct modes at the same frequency. It is found that the TM01 mode excited in one MPA, a hybrid mode (TM03+TM21) is induced in the...
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Sensing of NO2, NH3, and C3H6O by graphene-Si Schottky diode at chosen voltage biases
PublicationOur research aims to propose a selective gas sensor based on a single graphene-silicon Schottky junction. By polarizing the sensor with selected voltage, we move between different regions of its gas sensitivity dependent on the lighting conditions. Our results show that low detection limits (36 ppb for NO2, 238 ppb for NH3, and 640 ppb for C3H6O) are obtained under UV irradiation at -0.4 V; however, a light source power supply...
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Separation of Simultaneous Speakers with Acoustic Vector Sensor
PublicationThis paper presents a method of sound source separation in live audio signals, based on sound intensity analysis. Sound pressure signals recorded with an acoustic vector sensor are analyzed, and the spectral distribution of sound intensity in two dimensions is calculated. Spectral components of the analyzed signal are selected based on the calculated source direction, which leads to a spatial filtration of the sound. The experiments...
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Separatory jednolite i składane docierarek tarczowych do płaszczyzn
PublicationOmówiono rodzaje układów wykonawczych docierarek do obróbki powierzchni płaskich i płasko-równoległych. Podano zasady projektowania separatorów przedmiotowych dla docierarek jedno- i dwutarczowych. Omówiono stosowane materiały na separatory oraz zamieszczono przykłady konstrukcji separatorów jednolitych i modułowych.
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Ship Magnetic Signature Classification Using GRU-Based Recurrent Neural Networks
PublicationMagnetic signatures represent the magnetic field generated by a ship’s ferromagnetic components and provide valuable information for identifying vessels not only in naval operations, but also in civil passages. The topic of accurate modelling of these signatures is relevant to this day, but also the complexity of the model necessary to accurately predict the ship’s magnetic field. This paper presents the implementation of a deep,...
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Side-on phosphinoboryl platinum(ii) complexes
PublicationThe oxidative addition of bromo(phosphino)boranes to platinum(0) compounds enabled the formation of platinum(II) complexes with unprecedented side-on coordination of the boryl ligand. The resulting complex underwent a reaction with carbon dioxide, leading to the insertion of a CO2 molecule into the B–P bond of the phosphinoboryl ligand.
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Silver and Silver/Sodium Bisphosphonate Salts: Rare Examples of Molecular Solid Solutions and Their Biological Activity as Dual-Action Compounds
PublicationBisphosphonates (BPs) are an important treatment for osteoporosis and bone metastases due to their low toxicity, high thermostability, and the ability to inhibit bone resorption. Notably, BPs like alendronate, which contain a primary amine group, exhibit potent antiresorptive and antiangiogenic properties. Recent studies have focused on enhancing the BP properties by incorporating bioactive metals to increase their therapeutic...
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Simulation of energy management system using model predictive control in AC/DC microgrid
PublicationThis research seeks to enhance energy management systems (EMS) within a microgrid by focusing on the importance of accurate renewable energy prediction and its strong correlation with load curtailment. Analyzing the precision of disturbance predictions, reveals that predicting one hour in advance is more effective than immediate predictions or those made several hours beforehand. Furthermore, the study investigates scheduling load...
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Slip Compensation Technique In Five-Phase Induction Motors Drive System
PublicationThe article presents a slip compensation method for traditional scalar (V/f) control of a five-phase induction motor. The proposed control method uses the possibility of injecting the third harmonic of voltage to increase the motor’s electromagnetic torque. The solution is characterized by both the simplicity of scalar control and improved speed control efficiency. The paper presents the PLECS simulation results and describes the...
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Sobol’ sensitivity analysis of a 1D stochastic elasto-plastic seismic wave propagation
PublicationA novel numerical framework for the Sobol’ sensitivity analysis of 1D stochastic elasto-plastic wave propagation is proposed and evaluated. The forward propagation of uncertain input motions through uncertain elasto-plastic soils and structures is often conducted using the finite element method (FEM) together with the Monte Carlo simulation. However, it is computationally much more efficient to use the stochastic elasto-plastic FEM...
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Solvent Selection as a Key Factor in the Performance of Semitransparent Heterojunctions Composed of Hydrogenated Nanotubes and Bismuth Sulfides
PublicationResearch on titanium nanotubes modified with metal sulfides, particularly bismuth sulfide (Bi2S3), aims to create heterostructures that efficiently absorb sunlight and then separate photogenerated charge carriers, thereby enhancing the energy conversion efficiency. This study shows a key role of solvent used for sulfide and bismuth salt solutions used during successive ionic layer adsorption and reaction (SILAR) onto the morphology,...
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Spatial allocation of nature-based solutions in the form of public green infrastructure in relation to the socio-economic district profile–a GIS-based comparative study of Gdańsk and Rome
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Spatial allocation of nature-based solutions in the form of public green infrastructure in relation to the socio-economic district profile–a GIS-based comparative study of Gdańsk and Rome
PublicationWith increasing environmental and climate change threats to urban areas, Nature-based Solutions (NbS), including public greenery, are becoming integral components of green infrastructure (GI) networks. These solutions provide multiple benefits in different aspects, including stormwater management, enhanced air quality and improved societal well-being, offering cost-effective and adaptable alternatives to resource-intensive and...
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Spectrophotometric determination of chlorpyrifos in foodstuffs after vortex-assisted surfactant-enhanced emulsification microextraction using magnetic deep eutectic solvents: Analytical greenness profile
PublicationIn this work a novel and green vortex-assisted surfactant-enhanced emulsification microextraction (VA-SEEME) based on magnetic deep eutectic solvents (MDESs) was developed for the determination of chlorpyrifos in foodstuffs by UV-Vis spectrophotometric analysis. MDES (trihexyltetradecylphosphonium chloride: MnCl2: octanoic acid) was used as the extractant, non-ionic surfactant Tween-80 was used as an extraction medium, and ethanol...
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Speech intelligibility improvement for public address systems in noisy environments based on automatic gain selection in octave bands
PublicationA method of speech intelligibility improvement in public address (PA) systems installed in reverberant acoustic spaces is proposed. The method is mainly intended for systems operating in high background noise levels. The algorithm is based on the near end listening enhancement approach. Signal-to-noise ratio (SNR) is evaluated in the octave frequency bands. Signal levels in the acoustic space are estimated using the measured impulse...
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Stabilization Method for Speed Observer of Induction Machine
PublicationThis article proposes the speed estimation principles dedicated to the observer structures based on the machine mathematical model. The rotor speed is reconstructed based on the mathematical model of a machine by using both adaptive and nonadaptive schemes. The presented principle is generalized to the classical nonlinear system in the vector form and can be applied to induction machines. The proposed rotor speed reconstruction...
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Strategies for feature-assisted development of topology agnostic planar antennas using variable-fidelity models
PublicationDesign of antennas for contemporary applications presents a complex challenge that integrates cognitive-driven topology development with the meticulous adjustment of parameters through rigorous numerical optimization. Nevertheless, the process can be streamlined by emphasizing the automatic determination of structure geometry, potentially reducing the reliance on traditional methods that heavily rely on engineering insight in the...
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Strategies toward Green Deal implementation in the context of SCG reuse and recovery in the circular economy model
PublicationThe article explores the future outlook on integrating and using a resource database for the recovery and reuse of coffee industry residues, focusing on economic and environmental perspectives within the Circular Economy Model (CEM). With the continuous rise in global coffee consumption, the production of Spent Coffee Grounds (SCG) has also surged worldwide, presenting significant opportunities for resource recovery and recycling....
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Structural insights into fungal and human topoisomerase II with implications for in silico antifungal drug design
PublicationTopoisomerases are essential enzymes regulating DNA supercoiling and disentanglement, critical for genomic integrity. While topoisomerase inhibitors are well-established in anticancer and antibacterial chemotherapy, their potential as antifungal agents remains underexplored or even not proofed. This study investigates structural distinctions between Saccharomyces cerevisiae topoisomerase II (ScTopoII) and human topoisomerase IIα...
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Structural patterns and cytotoxic activity of dinuclear Cu(II), Ni(II) and Cd(II) complexes with pyridine-based malonic acid dihydrazone
PublicationA dinuclear Cu(II) complex, [Cu2(L)(H2L)](ClO4)2·4H2O (Cu-1), with a condensation derivative of 2-acetylpyridine and malonic acid dihydrazide (H2L), was obtained through a direct synthesis. After recrystallization, the single-crystalline product was characterized by single crystal X-ray diffraction analysis, EPR, UV/Vis and IR spectroscopy. In the resulting dimeric Cu(II) complex, one ligand molecule is coordinated in its dianionic...
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Structure, performance, and photooxidative stability of Mater-Bi/brewers' spent grain composites as a function of filler thermomechanical and chemical modification
PublicationNowadays, to provide a step towards circularity, the development of sustainable polymer composites should include the application of waste-based materials that can act not only as simple fillers, reducing the use of polymers but also as functional additives, limiting or eliminating the use of synthetic components. Herein, in the presented study, the main by-product of the brewing industry, brewers' spent grain (BSG), was applied...
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Study of vibrational surface topography measurement errors of LPBF Inconel 718 alloy after shot peening process
PublicationA study of surface topography can provide valuable information on the product. Since the material finishing relies on the measured topography, the manufacturing process can be controlled by studying the roughness. The Laser Power Bed Fusion (LPBF) materials belong to the commonly used surfaces in the industry. Measuring this type of material with a contactless method can be found in many practical implementations. The white light interference...
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Sub‐Nanometer‐Scale Cu9S5 Enables Efficiently Electrochemical Nitrate Reduction to Ammonia
PublicationThe sub-nanometer is a key feature size in materials science. Unlike single-atom and nanomaterials, size effects and inter-component cooperative actions in sub-nanomaterials will effective on its performance is more significant. Here, 0.95 nm ordered arrangement Cu9S5 sub-nanowires (Cu9S5 SNWs) are synthesized through the co-assembly effect of inorganic nuclei (Cu9S5) and clusters (phosphotungstic acid-PTA), achieving a significant...
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Superconductivity in Ternary Mg4Pd7As6
PublicationThe synthesis and characterization of a new compound Mg4Pd7As6, which is found to be a superconductor with Tc = 5.45 K is reported. Powder X-ray diffraction confirms the U4Re7Si6 structure (space group Im-3m, no. 229) with the lattice parameter a = 8.2572(1) Å. Magnetization, specific heat, and electrical resistivity measurements indicate that it is a moderate-coupling ( = 0.72) type-II superconductor. The electronic and phonon...
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Supramolecular deep eutectic solvents in extraction processes: a review
PublicationSolvent selection is essential for industrial and analytical extraction processes to ensure environmental safety and neutrality. Nevertheless, toxic and hazardous solvents are often used, due to their cost-effectiveness and ready availability. In green chemistry, alternative solvents such as supramolecular deep eutectic solvents are gaining attention due to their superior performance compared with traditional non-green solvents...
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Surface Charge Density Spectra: Complex Analysis of the Electrical Double Layer Developed from Measurements of Hexanol Adsorption Kinetics
PublicationA procedure for deriving surface charge density spectra from differential capacitance data is presented in this study, providing a deeper analysis of the generated charge. A set of simulated differential capacitance spectra was determined for three types of adsorption process control: diffusion control, adsorption control, and mixed control. Based on the differential capacitance curves and spectra, surface charge density spectra...
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Surrogate modeling of passive microwave circuits using recurrent neural networks and domain confinement
PublicationElectromagnetic (EM) simulation is widespread in microwave engineering. EM tools ensure evaluation reliability but incur significant expenses. These can be mitigated by employing surrogate modeling methods, especially to expedite design workflows like local/global optimization or uncertainty quantification. However, building accurate surrogates is a daunting task beyond simple cases (low dimensionality, narrow geometry parameter...
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Sustainability, reliability, and durability of civil engineering structures
PublicationConsidering the Bulletin Readers’ interest in civil engineering,the Special Section “Sustainability, reliability, and durability of civil engineering structures” is now presented, with papers that, by studying specific cases, fully embrace all aspects related to the topic, starting from geometry design, determination of load acting on a structure, characteristics of the material for construction purpose, characteristics of structural...