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Year 2025
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Development of a High-Sensitivity Triple-Band Nano-Biosensor Utilizing Petahertz Metamaterials for Optimal Absorption in Early-Stage Leukemia Detection
PublicationThis research focuses on designing a novel miniaturized biosensor for early-stage detection of leukemia. The proposed sensor operates in the low Petahertz (PHz) range. The primary prerequisites for the development process include multi-band operation, compact physical size, near-perfect absorption at resonant frequencies, and insensitivity to the angle of incidence. These features are crucial for ensuring high-performance operation...
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Development of an asymmetric cellulose acetate-ionic liquid P6,6,6,14[PHOS] gel membrane for the perstraction of succinic acid from a model fermentation solution of yarrovia lipolytica
PublicationThis study introduces a novel approach to separate succinic acid (SA) from fermentation mixtures using an asymmetric membrane based on the gelation of the ionic liquid [P6,6,6,14][PHOS] coated with two layers of cellulose acetate. The membrane was designed to explore the synergistic effect of polymer-ionic liquid interfaces according to the solution-diffusion theory. The gelation of the ionic liquid was achieved using 12-hydroxystearic...
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Development of dual nozzle slurry extrusion 3D printer by integrating material extrusion and photopolymerization for the fabrication of engineered ceramics
PublicationThis research focuses on developing a dual-nozzle slurry-based extrusion 3D printer capable of fabricating intricate zirconia structures. The designed 3D printer combines material extrusion and photopolymerization technologies to improve material diversity, precision, and cost-effectiveness. The 3D printer design incorporates ultraviolet curing to instantly cure extruded zirconia slurry thereby, eliminating the need for a step-wise...
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Development of PLA-based bilayer nanofibers containing ZIF (zeolitic imidazolate framework)-67 nanoparticles for active food packaging applications in citrus preservation
PublicationIn this study, antimicrobial monolayer and bilayer nanofibers were developed from poly(lactic acid) (PLA) by incorporating zeolitic imidazolate framework-67 (ZIF-67) nanoparticles via electrospinning for active food packaging. ZIF-67 nanoparticles were synthesized under varying conditions, and their physicochemical properties were thoroughly characterized. Active monolayer PLA nanofibers were produced by directly electrospinning...
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Development of UAV-based LiDAR and multispectral measurement techniques for monitoring sediment intrusion in coastal wetlands
PublicationThis study presents an innovative measurement method utilizing Uncrewed Aerial Vehicle (UAV)-based Light Detection and Ranging (LiDAR) sensor and multispectral imaging to precisely monitor sand deposition in coastal wetlands. The classification scheme developed in this research distinguishes four key coastal land cover classes: New Sand (recently deposited sediments), Old Sand (previously deposited and partially stabilized sediments), Vegetation...
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Diagnosis of marine internal combustion engines by means of rapidly variable temperature and composition of exhaust gas as an alternative or support for currently used diagnostic methods
PublicationThe article points out relevance of parametric diagnostics of ship engines and analyzes the state of research in this field. A method is proposed for diagnosing engine systems on the basis of rapidly variable exhaust temperature while measuring its composition. A method for determining diagnoser tools from the signal within one engine cycle and mathematical and statistical treatment of test results is presented. The products of...
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Diagnostyka istniejących konstrukcji stalowych, w tym zastosowanie badań nieniszczących w ocenie stanu konstrukcji
PublicationDiagnostyka istniejących konstrukcji stalowych, jest kluczowym elementem oceny stanu technicznego obiektów budowlanych. Proces diagnostyczny ma na celu identyfikację deformacji konstrukcji, uszkodzeń spowodowanych warunkami eksploatacji oraz stopnia zużycia materiału. Główne cele diagnostyki obejmują zapewnienie bezpieczeństwa użytkowania, ocenę stanu technicznego, planowanie napraw i modernizacji oraz kontrolę zgodności z przepisami. W...
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Differential evolution-optimized gold nanorods for enhanced photothermal conversion
PublicationNoble metallic nanoparticles (NPs) have shown great potential in the field of sustainable energy. Gold nanorods (AuNRs), known for their size-dependent optical and electrical characteristics, are strong candidates for various applications, particularly in solar energy conversion. Additionally, AuNRs are well-established nanomaterials in precision medicine. In this paper, we optimize the shape and size of AuNRs to maximize light-to-heat...
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Digital Dependence vs. National Performance. Preliminary Data Analysis
PublicationCountries differ in their capacity to develop and use digital technology– some build such capacity locally, others rely on foreign countries and corporations, and yet others do both. While sourcing arrangements may vary, the outcome is critical to countries’ performance – their ability to pursue national goals and priorities. The paper explores the relationship between the countries’digital dependence and performance,...
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Discrete evacuation in graphs with multiple exits
PublicationIn this paper, we consider the problem of efficient evacuation of mobile agents from distinct nodes in a graph to multiple exit nodes, while avoiding congestion and bottlenecks, and minimizing the total evacuation time. Each node in the graph can only hold one agent at a time, so the agents must choose their movements based on the locations of other agents to optimize the evacuation process. We consider two scenarios: the centralized...
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Discrete Non-Integer Order Model of Synchronous Generator for Power Hardware In the Loop Implementation
PublicationNon-integer order modelling is used for a better description of different nature physical phenomena which leads to more compact and knowledge-based models. The main objective of the presented study is to apply the non-integer order model of synchronous generator (SG) in the Power Hardware In the Loop (PHIL) technique which is readily used for i.e. design, research and development, maintenance or service purposes. The developed...
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Distinct cellular uptake patterns of two anticancer unsymmetrical bisacridines and their metabolic transformation in tumor cells.
PublicationUnsymmetrical bisacridines (UAs) represent a novel class of anticancer agents. Their high cytotoxicity towards multiple human cancer cell lines and inhibition of human tumor xenograft growth in nude mice signal their potential for cancer treatment. Therefore, the mechanism of their strong biological activity is broadly investigated. Here, we explore the efflux and metabolism of UAs, as both strongly contribute to the development...
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Diverse roles, advantages and importance of deep eutectic solvents application in solid and liquid-phase microextraction techniques – A review
PublicationDeep eutectic solvents (DESs) are an emerging class of promising green solvents used as an alternative to traditional organic solvents in various scientific fields. The high biodegradability, biocompatibility, eco-friendliness, tunable properties, and presence of active groups in DESs make them the preferred solvent in a variety of solid- and liquid-phase microextraction techniques. Aside from these benefits, the use of DESs in...
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Diversity, Equality, and Inclusion Maturity Model: Setting New Standards in Responsible Business Education – Evidence from PRIME Reports
PublicationPurpose Creating diverse, equal and inclusive (DEI) environments is an important and relevant area of research on corporate social responsibility (CSR). This paper aims to identify recent trends in the business schools context, as they are primary sources of ethical management innovation. The paper also aims to identify business school DEI maturity levels. Design/methodology/approach The research design is qualitative. Using thematic...
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Dobre praktyki doskonalenia organizacji w świetle kryteriów Pomorskiej Nagrody Jakości
PublicationMonografia została poprzedzona wstępem i składa się z czterech zasadniczych rozdziałów. W rozdziale 1 zaprezentowano założenia i ewolucję koncepcji kompleksowego zarządzania jakością (Total Quality Management, TQM) oraz przykłady modelowych rozwiązań w tym obszarze. W rozdziale 2 omówiono różne najważniejsze modele doskonałości oraz konkursy promujące ideę tych modeli. Ważne miejsce w ramach tych rozważań zajmują kwestie dotyczące...
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Docieranie otworów i zewnętrznych powierzchni walcowych
PublicationW artykule przedstawiono metody docierania otworów i zewnętrznych powierzchni walcowych. Omówiono typowe obrabiarki i narzędzia. Podano wytyczne do projektowania separatorów przedmiotowych i trzpieniowych narzędzi rozprężnych.
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Dold Coefficients of Quasi-unipotent Homeomorphisms of Orientable Surfaces
PublicationThe sequence of Dold coefficients $(a_n(f))$ of a self-map $f\colon X \to X$ forms a dual sequence to the sequence of Lefschetz numbers $(L(f^n))$ of iterations of $f$ under the M{\"o}bius inversion formula. The set $\cAP(f) = \{ n \colon a_n(f) \neq 0 \}$ is called the set of algebraic periods of~$f$. Both the set of algebraic periods and sequence of Dold coefficients play an important role in dynamical system and periodic point...
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Dom 2 / Gdynia
PublicationDom jednorodzinny został zaprojektowany w miejscu budynku z lat 50. ubiegłego wieku. Ze względu na architektoniczną tradycję dzielnicy Orłowo i wynikające z niej wytyczne konserwatorskie forma nowego obiektu nawiązuje do tutejszej modernistycznej zabudowy i jest powtórzeniem formy swojego poprzednika. Składają się na nią dwa prostopadłościany o różnej wysokości, z przesunięciem elewacji jednego z nich. Tym samym nawiązuje ona zarówno...
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Dom: Czyli jak mieszkamy na Pomorzu
PublicationWarsztaty o sposobach zamieszkiwania na Pomorzu. Prezentacja dotycząca domów i bloków w mieście oraz tradycyjnych chat na Kaszubach i Żuławach. W ramach warsztatów uczestnicy zaprojektowali i wykonali model swojego wymarzonego domu. Projekt w ramach Bałtyckiego Festiwalu Nauki wpisuje się w obszar realizacji celów SDG: 3,4,11,13,15 Warsztaty realizowane w ramach międzynarodowego projektu edukacyjnego "Reconnecting with Your Culture",...
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Dynamic anaerobic digestion-based biorefineries for on-demand renewable energy and bioproducts in a circular bioeconomy
PublicationAnaerobic digestion (AD) is an important biotechnology for treating biodegrad- able residues and producing bioenergy, yet its full potential remains untapped. We investigate a two-phase AD system for biorefinery applications, producing valuable bioproducts, such as volatile fatty acids (VFAs) and biogas, from grass feedstock. We introduce a demand-driven operational approach to match mar- ket conditions, while minimising water...
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Dynamic Electrochemical Impedance Spectroscopy in Galvanostatic Mode as a Tool for Passive Layer State Monitoring in a Chloride Solution Under a Mechanical Load
PublicationMechanical stress is one of the factors influencing the initiation of pitting corrosion and deterioration of the protective properties of the passive layer on stainless steel. The tests carried out on AISI 304L stainless steel showed that, in the 3.5% NaCl environment for samples loaded in the elastic and plastic range, no pitting corrosion initiation was observed. Only mechanical damage of the passive layer occurred. Galvanodynamic...
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Dynamic Impedance-Based Monitoring of St37 Carbon Steel Corrosion in Sterilized Manganese Broth Medium
PublicationMicrobiologically influenced corrosion (MIC) of metals is a serious challenge where manganese oxidizing bacteria (MOB) can play a relevant role. However, there is no consensus on how MOB influences corrosion mechanisms. This arises from the complexity of the corrosion process and the challenge of distinguishing the effects of chemicals from the biological contributions. In this work, the electrochemical characteristics of St37...
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DZIENNIK(AI)RSTWO. Jak sztuczna inteligencja zmienia najciekawszą profesję na świecie
Publicationa banałem rewolucji sztucznej inteligencji (AI) kryją się obietnice, lęki i marzenia o nirwanie końca ułomności dziennikarstwa i bogactwie możliwości. Dziennikarstwo algorytmiczne, dziennikarstwo danych, burzy fundamenty modeli biznesowych i zarządzania mediami, tożsamości i ról zawodowych oraz dziennikarskiej ideologii. Obiecuje wiele, destabilizuje wszystko. Zapowiada egalitaryzm, oferuje niespotykaną historycznie dominację....
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Early-Age Hydration Reaction of Cement Mortars with the Participation of Aluminosilicate Microsphere Fractions
PublicationThe paper presents the influence of two fractions (M1 and M2) of aluminosilicate microspheres in the amount of 0.0%, 1.5%, 3.5%, and 5% as a cement substitute on the early heat of hydration of cement mortars assessed by isothermal calorimetry (IC). The study results showed a higher accumulated heat of hydration for cement mortars with 1.5% of the test material for both grain fractions. In turn, mortars with 3.5% and 5% of smaller...
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EDRNet: An attention-based model for multi-type tumor and polyp segmentation in medical imaging
PublicationIn the pursuit of advancing medical image segmentation, this study introduces a novel neural network, Efficient Deep Residual Network (EDRNet). Our approach is designed to handle different types of tumors, encompassing MRI brain tumor segmentation, three breast tumor ultrasound segmentation tasks, and cholorectal polyp segmentation from the Kvasir dataset. EDRNet incorporates advanced architectural features such as Enhanced Residual...
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Effect of AlF3 and KF addition on the structure and luminescent properties of P2O5 – K2O – Nb2O5 – Bi2O3 glasses doped with Eu3+
PublicationBased on the developed phosphate glasses P2O5–K2O–Bi2O3–Nb2O5 doped with Eu3+, the influence of AlF3 and KF on the structural and luminescent properties was investigated. For this purpose, three series of glasses containing from 5 to 15 mol% fluorides were synthesized. Two of the series included the KF additive, which was introduced in two ways - proportionally and disproportionately at the expense of the K2O share. The structural characterization...
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Effect of loss/gain of energy on standing oscillations in a planar resonator
PublicationThe dynamics of small-magnitude acoustic perturbations in a planar resonator is considered. Fluid flow is affected by a heating-cooling function, which may disturb its adiabaticity. This concerns open flows with an external inflow of energy and flows with relaxation of thermodynamic processes, such as exothermic chemical reaction and excitation of vibrational degrees of freedom of a molecule. These processes make the flow acoustically...
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Effect of process parameters on properties of Mn1.5CuFe0.5O4 spinel oxide coatings deposited by spray pyrolysis method
PublicationOne of the critical issues in the lifetime of metallic interconnects is related to their high oxidation rate and Cr diffusion, which negatively affect their performance. In the present study, a novel Fe modified Mn–Cu spinel oxide with the chemical composition of Mn1.5CuFe0.5O4 as protective coating was deposited on the surface of Crofer 22 APU and alumina by the spray pyrolysis method. The effects of different deposition conditions...
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Effect of process parameters on the wear characteristics and lapping performance of SLS-fabricated polyamide tools
PublicationNowadays, additive manufacturing (AM) offers new possibilities in the production of tools for various finishing processes, such as grinding, lapping, and polishing. In this study, the effect of different lapping parameters was investigated on the wear characteristics and lapping performance of SLS printed polyamide tools. In accordance with the PS/DK 23 experimental design, machining of Al2O3 ceramic materials have been conducted...
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Effect of rPET Content and Preform Heating/Cooling Conditions in the Stretch Blow Molding Process on Microcavitation and Solid-State Post-Condensation of vPET-rPET Blend: Part II—Statistical Analysis and Interpretation of Tests
PublicationThis research explores how varying proportions of virgin polyethylene terephthalate (vPET) and recycled polyethylene terephthalate (rPET) in vPET-rPET blends, combined with preform thermal conditions during the stretch blow molding (SBM) process, influence PET bottles’ microscopic characteristics. Key metrics such as viscosity, density, crystallinity, amorphous phase relaxation, and microcavitation were assessed using response...
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Effect of straw and wood biochar application on growth of Miscanthus × giganteus on marginal soil: a meso-scale study with shock short-term screening
PublicationThe effect of biochar (Bc) application on marginal soil fertility and growth of Miscanthus × giganteus (M × g) was investigated in a greenhouse-based short-term mesocosm experiment. Straw (SBc) and wood-based (WBc) biochars were added to poor class marginal soil (C = 0.5 %) in 5 volumetric ratios (0, 1, 2.5, 5, 10, 15 % v/v). The composition and nanostructure of SBc and WBc were assessed in reference to European Biochar Certificate...
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Effect of synthesis method on ammonium sorption behavior of oat husk biochar
PublicationAmmonium is a pollutant commonly detected in various water sources and, in high concentrations, poses significant risks to environmental quality and public health. Numerous techniques have been developed and are currently employed to eliminate pollutants, including ammonium ions, from water. Among these various methods, adsorption has proven to be the most cost-effective and eco-friendly, particularly when utilizing an inexpensive...
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Effect of TiO2 percentage on the hydrogen-based direct reducibility of high-grade pellets
PublicationThe steel industry relies heavily on the direct reduction of iron ore pellets, which is a more environmentally friendly alternative to traditional blast furnaces, by reducing CO2 emissions. This study investigated the effects of different TiO2 contents on the reducibility of high-grade iron ore pellets using hydrogen (H2). The research employed HSC chemistry, COMSOL Multiphysics, and X-ray tomography to analyse the thermodynamics...
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Effect of water contamination of an environmentally acceptable lubricant based on synthetic esters on the wear and hydrodynamic properties of stern tube bearing
PublicationThe ecological aspects of the lubrication of stern tube bearings on ships represent a critical challenge today. Oil leakages are a typical issue, even for new systems, similarly to water ingress from the environment. One of the options for improving environmental protection is replacing mineral oil with an environmentally adaptable lubricant (EAL). This paper reports experimental investigations of the effect of water content in...
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Effect of Zirconia addition on Laser powder bed fusion of Inconel 718-zirconia Composite
PublicationThis study investigates the integration of zirconia (ZrO2) as a reinforcing agent in the Inconel 718 matrix to potentially enhance material hardness and high-temperature oxidation resistance. Employing laser powder bed fusion (LPBF), 3D composite parts of Inconel 718-ZrO2 were systematically fabricated, varying the zirconia mass. The primary objectives encompass exploring the impact of zirconia on the microstructure, micro-hardness,...
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Effects of aggregate crushing and strain rate on fracture in compressive concrete with a DEM-based breakage model
PublicationW tym artykule zbadano, w jaki sposób kruche kruszywa wpływają na mezoskopowe zachowanie dynamiczne betonu w warunkach jednoosiowego ściskania. Przeprowadzono obszerne dynamiczne obliczenia dwuwymiarowe (2D), aby zbadać wpływ kruszenia kruszywa i szybkości odkształcania na dynamiczną wytrzymałość betonu i wzory pęknięć. Wykorzystując model pękania oparty na DEM, beton symulowano jako materiał czterofazowy składający się z kruszywa,...
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Effects of Emerging Pollutant Mixtures: Assessing the Impact of Caffeine and Ionic Liquid on Cyanobacteria and Diatom Species
PublicationThe presence of micropollutants poses significant environmental concerns due to their potential toxicity in aquatic ecosystems. However, the effects of micropollutant mixtures, particularly synergistic or antagonistic interactions, remain underexplored. The study employs nonstandard biomarkers to investigate the interaction effects of binary mixtures of caffeine, a prevalent anthropogenic contaminant, and the imidazolium-based...
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Effects of process parameters on dynamic and static load capacity of EN AW-2024-T3 aluminum alloy joints prepared by friction stir welding
PublicationThis study investigates the impact of friction-stir welding (FSW) process parameters on the mechanical performance and fracture behavior of EN AW-2024-T3 aluminum alloy joints. A series of static and dynamic mechanical tests were conducted on six welded samples, revealing that the joint strength and fracture characteristics are highly sensitive to FSW parameters, particularly tool rotational rate, pin length, and traverse speed....
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Effects of pyrocatechol on the computational, structural, spectroscopic and thermal properties of silver-modified hydroxyapatite
PublicationThis study investigates the synthesis and characterization of hydroxyapatite (HAp) ceramic biomaterials doped with silver (Ag) and pyrocatechol. HAp, commonly utilized in the treatment of hard tissues including teeth and bones, was produced and analyzed to assess the structural, morphological, elemental, and thermal properties of the materials. The phase and crystal structures of the synthesized HAp biomaterials were examined using...
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Efficacy of modal curvature damage detection in various pre-damage data assumptions and modal identification techniques
PublicationThe efficacy of modal curvature approach for damage localization is discussed in the paper in the context of input data. Three modal identification methods, i.e., Eigensystem Realization Algorithm (ERA), Natural Excitation Technique with ERA (NExT-ERA) and Covariance Driven Stochastic Subspace Identification (SSI-Cov), and four methods of determining baseline data, i.e., real measurement of the undamaged state, analytical function,...
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Efficient Field Correction of Low-Cost Particulate Matter Sensors Using Machine Learning, Mixed Multiplicative/ Additive Scaling and Extended Calibration Inputs
PublicationParticulate matter (PM) stands out as a highly perilous form of atmospheric pollution, posing significant risks to human health by triggering or worsening numerous heart, brain, and lung ailments, and even increasing the likelihood of cancer and premature mortality. Therefore, ensuring accurate monitoring of PM levels holds paramount significance, particularly urban zones of dense population. Still, achieving precise readings of...
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Ekspertyz techniczne zabytkowych obiektów budowlanych . Wybrane zagadnienia
PublicationWspółczesna tendencja do skracania czasu realizacji prac remontowo- naprawczych obiektów budowlanych będących zabytkami nieruchomymi, przy jednoczesnym ograniczaniu zakresu oraz stopnia szczegółowości dokumentacji projektowej, jak również często realizowane zmiany sposo- bu użytkowania obiektów zabytkowych wymagają zwrócenia szczególnej uwagi na zagadnienie właściwej oceny stanu technicznego tego typu obiek- tów prowadzonej na...
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Electrifying the bus network with trolleybus: Analyzing the in motion charging technology
PublicationCurrently, electric buses are becoming more and more popular, and their number in operation is increasing. The range of electric buses is also increasing and solutions that seem to be working almost without fixed infrastructure are being promised. However, this requires the use of high-capacity batteries, which increases the weight and price of the vehicle and causes high costs of battery replacement during operation. Moreover,...
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Electrospun Fibers from Biobased and Recycled Materials for Indoor Air Quality Enhancement
PublicationAir filters are crucial components of building ventilation systems. Compared to conventional air filter media like glass fibers and melt-blown fibers, electrospinning membranes are more efficient for capturing various pollutants due to the smaller pores present on the structure. In this paper, activated carbon filters were prepared with eco-friendly polylactic acid (PLA) and microcrystalline cellulose (MCC) using electrospinning...
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Elicited Production of Essential Oil with Immunomodulatory Activity in Salvia apiana Microshoot Culture
PublicationSalvia apiana Jepson is an endemic North American species characterized by a rich phytochemical profile including abietane-type diterpenoids, phenolic acids, flavonoids, and thujone-free essential oil (EO). The current study was aimed at increasing EO production in bioreactor-grown S. apiana microshoot culture through biotic elicitation using chitosan, ergosterol, and yeast extract (YE). Additionally, the immunomodulatory effects...
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Elucidating charge transfer process and enhancing electrochemical performance of laser-induced graphene via surface engineering with sustainable hydrogel membranes: An electrochemist's perspective
PublicationLaser-induced graphene (LIG) has emerged as a promising solvent-free strategy for producing highly porous, 3D graphene structures, particularly for electrochemical applications. However, the unique character of LIG and hydrogel membrane (HM) coated LIG requires accounting for the specific conditions of its charge transfer process. This study investigates electron transfer kinetics and the electroactive surface area of LIG electrodes,...
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EMF Signature Analysis in a Marine-Type Brushless Synchronous Generator for Online Fault Detection
PublicationThe objective of the paper is to investigate the application of the current signature analysis type approach for the online diagnosis of a marine-type Brushless Synchronous Generator (BSG). The system’s diagnostic would be done using an automated test procedure when the generator comes online or offline. The analysis of the measured electromotive force waveform (EMF) is used for fault detection. The paper’s main contribution...
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Energy Clusters in Reconciling Paradoxes in Corporate Sustainability
PublicationOur study aims to discover whether there is awareness and acknowledgment of paradoxical tensions in the sustainability pillars in clusters operating in the energy sector, as well as whether and how these clusters help their member companies reconcile these paradoxes. Our study also intends to discover the role of clusters in supporting sustainable value chain creation to solve paradoxical tensions. We use a multiple case study...
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Energy landscape and structural transformations of C38 penta-fullerene: The stabilizing role of octagons and insights into penta-octa-penta-fullerene
PublicationTheoretical investigations were conducted to study the stability and energy landscape of C38 penta-fullerene, a structure comprising six penta-graphene unit cells. Vibrational analysis at the B3LYP/def2SVP level revealed 18 negative frequencies, indicating the dynamic instability of penta-fullerene. Analyzing the energy profiles for these vibrational modes led to the identification of six energetically favourable isomers, featuring...
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Energy potential and economic viability of small-scale wind turbines
PublicationSmall-scale wind turbines (SWTs) have the potential to complement residential PV systems, but their feasibility is highly dependent on local wind conditions, particularly at low elevations where wind resources exhibit high spatial and temporal variability. This study evaluates SWT potential in Poland (Central Europe) using hourly wind speed measurements over six years from 269 gauging stations. A generic power curve is applied...