Wyszukiwarka
Katalog Publikacji
Publikacje rozpoczynające się od: C wyczyść
Filtry
wszystkich: 4423
wyświetlamy 1000 najlepszych wyników Pomoc
Katalog Publikacji
Rok 2025
-
Calculations of Cross-Sections for Positron Scattering on Benzene
PublikacjaIn this work, we present a theoretical study on positron scattering by benzene molecules over a broad energy range (1–1000 eV). The aim of this work is to provide missing data from partial cross-sections for specific processes. In particular, calculations of cross-sections for direct ionization and electronic excitation were carried out for benzene molecules in the gas phase. An estimate for the cross-section for positronium formation...
-
Case study - klucz do efektywnej edukacji
PublikacjaCelem artykułu jest omówienie stu dium przypadku jako narzędzia dydak tycznego oraz przedstawienie procesu jego tworzenia na przykładzie materia łów dydaktycznych pod tytułem Prak tyczne wyzwania edukacji menadżerskiej: zbiór casów dydaktycznych, opubliko wanych przez Wydawnictwo Politech niki Gdańskiej1. Są one efektem pracy z grupą studentów Wydziału Zarządza nia i Ekonomii PG w ramach projektu 102 „Akademia Studium Przypadku”....
-
CeO2/La2O3/MWCNTs as an efficient nano-electrocatalyst for use in the anode of alcohol fuel cells
PublikacjaOne of the most important challenges in commercializing Direct Alcohol Fuel Cells (DAFCs) is the significant expense of advanced catalysts used in their anodes and cathodes and the CO poisoning of these catalysts with alcohol oxidation by-products. Alcohols oxidation reaction occurred in the anode of DAFCs. Within this study, a tripartite catalyst, comprising cerium oxide (CeO2) and lanthanum oxide (La2O3) integrated with multi-walled...
-
Cervical spine injuries during car collisions with three types of roadside barriers
PublikacjaTraditional methods for assessing vehicle passenger safety in crash tests involving roadside barriers rely on safety indices derived from vehicle kinematic responses. However, this approach may not accurately capture the complex biomechanical stresses exerted on the human body during a collision, raising concerns about the validity and reliability of these indices in accurately evaluating passenger safety. This study investigates...
-
Challenges and Current Trends in Preventing Antimicrobial Resistance in EU Water Law Context
PublikacjaThe increasing consumption of pharmaceuticals, including antibiotics, and their improper disposal have resulted in both pharmaceuticals and their metabolites being released into the environment, where they pose a risk to both ecosystems and human health. One of the most serious threats to public health associated with the presence of antibiotics in the environment is antimicrobial resistance (AMR). In order to combat AMR, the legal...
-
Changes in Enterprise Markets in Poland and Ukraine during the COVID-19 Pandemic
PublikacjaThis chapter also evaluates the effectiveness of government assistance provided in 2020 and 2021 to business owners and employees. Our study was conducted to determine how many companies failed, what industries these companies operated in, and where business growth occurred.
-
Changes in the Expression Profile of Growth-Associated Protein 43 in Degenerative Lumbosacral Stenosis
Publikacja -
Characteristics Mode Analysis and Excitation of Orthogonal Modes on a Single Substrate for Wideband IoT Applications in the Millimeter Wave Band
PublikacjaThis paper presents the design of a circularly polarized millimeter-wave (mm-wave) metasurface (MTS) antenna. The Characteristics Modes Analysis (CMA) is employed to examine various modes within the unit-cell design of the proposed metasurface. Based on a thorough analysis, two orthogonal TM modes with a broadside radiation pattern were identified. These modes were then simultaneously excited on a single substrate using simple...
-
Characteristics of AISI 420 And AISI 301 Stainless Steels Coatings Obtained by Thermal Spraying
PublikacjaIn this study, AISI 301 and AISI 420 stainless steels were deposited on an AISI 4135 substrate using the wire arc spray process (WASP). X-ray spectrum analysis revealed the presence of a body centred cubic (bcc) structure in both coatings. In particular, the AISI 301 coating showed the additional identification of chromium carbide Cr7C3. Conversely, the AISI 420 coating manifested the presence of a body centred cubic (Fe, Cr) structure,...
-
Chemical composition and techno-functional properties of high-purity water-soluble keratein and its enzymatic hydrolysates
PublikacjaThis study compared the effectiveness of urea-containing and urea-free L-cysteine solutions in extracting high-quality feather keratin and evaluated commercial proteases for producing keratin-derived bioactive peptides. The urea-assisted extraction was crucial for achieving high structural integrity and yield of soluble keratin. The keratin isolate exhibited oil-holding capacity of 9.37 g/g, foaming capacity of up to 127 %, and...
-
Chemical insight into pros and cons of coffees from different regions
PublikacjaThe main aim of this work was to study the chemical composition of eighteen ground coffees from different countries and continents with regard to the content of hazardous substances as radioactive elements (40K, 226Ra, 228Ra, 234U, 238U and 137Cs), metals, including heavy metals, aluminum and some microelements (V, Cr, Mn, Fe, Co, Ni, Cu, Zn) as well as substances that have a positive effect on human health and well-being (polyphenols,...
-
Chemical Origins of Optically Addressable Spin States in Eu2(P2S6) and Eu2(P2Se6)
PublikacjaLanthanide materials with a 4f7 electron configuration (8S7/2) offer an exciting system for realizing multiple addressable spin states for qubit design. While the 8S7/2 ground state of 4f7 free ions displays an isotropic character, breaking degeneracy of this ground state and excited states can be achieved through local symmetry of the lanthanide and the choice of ligands. This makes Eu2+ attractive as it mirrors Gd3+ in exhibiting...
-
Chitosan-coated coconut shell composite: A solution for treatment of Cr(III)-contaminated tannery wastewater
PublikacjaTannery industry generates a large amount of Cr(III)-contaminated wastewater daily. Unless properly treated, not only this effluent contaminates the water body, but also damages the environment and threatens public health. This batch study investigates the feasibility of chitosan-coated coconut shells as a low-cost material for removing Cr(III) from tannery wastewater. Both chitosan and coconut shell (CS) waste are abundantly available...
-
Chitosan-Nanogold and Chitosan-Nanozinc Electrodeposited Coatings for Biomedical Applications
PublikacjaBacterial infections represent a significant challenge to the success rate of both short- and long-term titanium implants.Consequently, there is a persistent need for effective strategies to prevent such infections. In this study, chitosan-based coatingsmodified with gold or zinc nanoparticles, recognized for their antibacterial properties, were electrophoretically deposited (EPD)onto the Ti13Zr13Nb alloy and thoroughly characterized....
-
Circular economy dynamics and country clusters: evidence for European countries
PublikacjaThis study examines trends in circular economy (CE) adoption across 27 European nations from 2012 to 2021. Two key objectives are explored: the evolution of cross-country disparities in CE practices and the identification of clusters with similar CE adoption patterns. Our analysis reveals a gradual convergence in CE adoption, which did not always lead to positive outcomes. Some countries improved recycling rates but saw increased...
-
Circular economy in Poland: Good practices and recommendations – case study
PublikacjaThis review paper explores circular economy (CE) initiatives and Green Public Procurement (GPP) practices in Poland, focusing on practical implementation and regulatory frameworks. The concept of CE is explored in depth, focusing on its potential to mitigate climate change and resource depletion by extending product lifecycles and reducing waste generation. Transitioning to a CE model offers numerous environmental and economic...
-
Cluster Glass Behavior and Magnetocaloric Effect in the Hexagonal Polymorph of Disordered Ce2PdGe3
PublikacjaIn this work, the hexagonal variant of the Ce2PdGe3 system is studied, which crystallizes in the AlB2-type structure (space group P6/mmm, hP3) and exhibits cluster spin-glass type behavior. The physical properties are studied by magnetization, heat capacity and electric resistivity, which showed that AlB2-type Ce2PdGe3 (h-Ce2PdGe3) can be classified as a cluster glass material with the freezing temperature Tf = 3.44 K in contrast...
-
c-Myc inhibition and p21 modulation contribute to unsymmetrical bisacridines-induced apoptosis and senescence in pancreatic cancer cells
PublikacjaBackground Pancreatic cancer (PC) is one of the most aggressive cancers and is the seventh leading cause of cancer-related death worldwide. PC is characterized by rapid progression and resistance to conventional treatments. Mutations in KRAS, CDKN2A, TP53, SMAD4/DPC4, and MYC are major genetic alterations associated with poor treatment outcomes in patients with PC. Therefore, optimizing PC therapy is a tremendous challenge. Unsymmetrical...
-
CO2 capture through Direct-Contact Condensation in a spray ejector condenser aided by a cyclone or T-junction separators
PublikacjaThis dissertation explores the vital task of separating and purifying CO2 in post-combustion sections of gas power plants. It focuses on integrating spray or steam ejector condenser with cyclone or T-junction separators to enhance CO2 capture through direct-contact condensation (DCC). The study employs experimental, analytical, and numerical techniques to understand DCC mechanisms within SEC and optimize separator performance....
-
Co‐Creation in Automated Public Space Lighting Design: Enhancing Safety and Reducing Light Pollution
PublikacjaPublic space lighting in urban areas is a crucial issue linked to climate change in developed environments. It significantly influences aesthetics, functionality, and the sense of safety while also contributing to the problem of light pollution. However, addressing these challenges requires a balance between technical optimization and environmental considerations, which this study explores through an experimental approach. This...
-
Collaborative Learning as a Service – a Blueprint for a Cloud Based Rural IoTs Deployment Facility.
PublikacjaVast spaces with inadequate telecommunications infrastructure pose a challenge to deploy IoT systems. A tech stack is proposed and implemented on TASKcloud at Gdansk Tech, based on widely available open-source technology components, making it possible to deploy various machine learning models developed on the cloud to constrained end devices, to make them capable of intelligently cleaning measurement data and optimizing their volume...
-
Comammox Nitrospira dominates the nitrifying bacterial community in the external canister biofilter in the tank fish farm
PublikacjaPortable canister filters are often used in aquaria or smaller recirculating aquaculture systems (RAS). However, the microbiome of these canister filters, especially the presence of comammox bacteria, has not been extensively studied. The aim of this study was to explain the mechanisms of nitrogen transformation, with a focus on the comammox process, in a portable filter under varying organic compound availability. Biomass samples...
-
Communication of luxury brands: an analysis of Ralph Lauren, Loro Piana and Louis Vuitton - case study
PublikacjaThe article presents an introduction to the concept of communication that focuses on the luxury brands such as Ralph Lauren, Loro Piana and Louis Vuitton, based on the available literature on the subject. The article describes comprehensive communication that can be used in the luxury brands. The publication begins with an indication of the communication concept in the light of current literature...
-
Communication of luxury brands based on Vogue, Harper's Bazaar and L'Officiel - case study
PublikacjaThe article presents an introduction to the concept of luxury brands and the way they communicate in a fashion and design magazines based on the available literature of the subject. The article describes comprehensive communication and marketing tools that can be used in practice. The publication begins with an indication of fashion industry in the light of current literature on the subject, an explanation...
-
Communication strategies on the example of luxury brands as Armani, Dior and Yves Saint Laurent - case study
PublikacjaThe article presents an introduction to the concept of communication that focuses on the luxury brands such as Armani, Dior and Yves Saint Laurent, based on the available literature on the subject. The article describes comprehensive communication that can be used in the luxury brands. The publication begins with an indication of the communication concept in the light of current literature on the...
-
Company culture matters! Knowledge-driven companies' way to innovations and sustainability
PublikacjaCompanies today aim to adapt to rapidly changing business environments by acquiring knowledge, developing dynamic capabilities, fostering market innovations, and ensuring sustainability. Achieving these goals requires a supportive company culture aligned with its structure and strategy. This study proves the critical role of company culture in sustainability based on a sample of 496 Polish knowledge workers, using structural equation...
-
Comparative Analysis of Entrepreneurial Intention Among Students: A Cross-Country Study
PublikacjaEntrepreneurial intention (EI) is a predictor of entrepreneurial behavior. In past years, it received significant attention due to the numerous advantages of entrepreneurial activities. The formation of EI within diverse international settings has been studied by researchers; however, the results of these studies are still inconclusive. Building on the Theory of Planned Behavior (TPB), this study aims to shed light on how EI is...
-
Comparative assessment of entire bending-torsion fracture surface for 10HNAP steel using different optical measurement techniques
PublikacjaThis research aims to compare two microscopic measurement techniques: Confocal and Focus Variation, for the assessment of the entire fracture surface method. The measurements were conducted using the Sensofar S Neox 3D and Alicona InfiniteFocus G4 optical profilometers. Surface parameters were assessed for the entire fracture regions of the 10HNAP structural steel ring V-notched specimen. Fatigue test were performed under combination...
-
Comparative study of bisphenols in e-cigarette liquids: evaluating fabric phase sorptive extraction, ultrasound-assisted membrane extraction, and solid phase extraction techniques
PublikacjaTo address the under-researched risk of bisphenols (BPs) in e-cigarette liquids, comprehensive studies have been conducted to propose optimum sample preparation and analysis methods. To determine twelve BPs in refill liquids for e-cigarettes, three sample preparation methods based on distinct operational and working principles were employed. These included fabric phase sorptive extraction (FPSE), ultrasound-assisted solvent extraction...
-
Comparing Indian and Western media reports on the “BRICS Summit 2024 and India's Participation”
Publikacja -
Comparison of battery technologies, size, and charging strategies for inter-city in–motion-charging buses
PublikacjaThe growth of suburbs is a challenge for public transport, and new tools are needed to electrify suburban and intercity bus lines sustainably. In-motion-charging (IMC) buses combine the advantages of both trolleybuses and electric buses. This paper analyses a case of using IMC buses on a 17-km-long intercity route service between Arnhem and Wageningen in the Netherlands. The analysis covers different traction battery technologies,...
-
Compressive and tensile properties of polyurethane foam mimicking trabecular tissue in artificial femoral head bones
PublikacjaThe presented study aimed to examine the compressive and tensile behavior of the polyurethane foams mimicking trabecular tissue in the artificial human femurs and assess their potential to replicate osteoporotic type of human bone tissue. Two types of Synbone femur models: one of the normal density (model 2350) and one of the lower density (model LD2350), and three types of Sawbones femur models (model 1130-21-8, 1130-21-3, 1130-192)...
-
Concept and Implementation of Innovative Scalable Wind Turbine Emulator with Doubly Fed Asynchronous Machine
PublikacjaThis paper presents the design of an innovative scalable wind turbine emulator. The system’s hardware and software components are described in detail including test results, demonstrating the research potential of the proposed design. The uniqueness of the proposed solution lies in its scalability, achieved despite the use of physical devices with fixed parameters. This scalability allows for the flexible shaping of the system’s...
-
Conductive Hydrogels: Bioelectronics and Environmental Applications
PublikacjaFlexible multimodal sensors have garnered continued attention due to their tunable structural performance and sensitivity to electric signals, adaptability to various environments, and outstanding mechanical properties. However, the limited self-healing capabilities, degradation, and reversible self-adhesion of sensors made from rubbers, elastomers, and other polymers have hindered their widespread application. Flexible sensors...
-
Control structures of Doubly-Fed Induction Generator connected to Current Source Converter
PublikacjaThe control of Doubly-Fed Induction Generator can be achieved through various techniques. At present, many works published in the literature show the application of Voltage Source Converter in conjunction with Doubly-Fed Induction Generator. Recently published articles rarely involve the operational characteristics and technical aspects of the Doubly-Fed Induction Generator - Current Source Converter systems. The dissertation presents...
-
Coordination of planning regulations at the edge of water and land. Conflicts within planning policy for urban blue space in small and medium-sized Polish port cities and possible directions of change
PublikacjaLand-sea integration is crucial for effective marine spatial planning and coastal zone management. Coordination of marine and land planning should ensure ecological sustainability of the coastal area, enable cross-coast investments and promote well-being of the society. A critical element for achieving sustainable development of marine and coastal area is the integration of marine and land planning on the verge of sea waters and...
-
Corrosion Resistance and Structure of Cr−O−N Coatings Formed in Vacuum Arc Plasma Fluxes With PIIID
PublikacjaCr−O−N-based vacuum arc coatings are very promising for the wear and corrosion protection of various steel parts. The aim of the work was to determine the effect of frequency and amplitude of the pulsed bias voltage (UB) on the elemental and phase composition, mechanical, and corrosion properties of Cr−O−N coatings. They have an amorphous structure with embedded nanosized solid solution crystallites based on CrN with a cubic structure...
-
Cost-Efficient Behavioral Modeling of Antennas by Means of Global Sensitivity Analysis and Dimensionality Reduction
PublikacjaComputational tools, particularly electromagnetic (EM) solvers, are now commonplace in antenna design. While ensuring reliability, EM simulations are time-consuming, leading to high costs associated with EM-driven procedures like parametric optimization or statistical design. Various techniques have been developed to address this issue, with surrogate modeling methods garnering particular attention due to their potential advantages....
-
Crisis Management in the Hospitality Industry Analyzed Through a Social Sustainability Focus on Male and Female Leadership Styles
PublikacjaHuman capital management's managerial practices during a crisis ensure the achievement of main strategic objectives and result in long-term values, such as organizational learning, resilience, innovation, and business flexibility. Therefore, this study considers the social sustainability perspective in the hospitality industry as a critical aspect of crisis management. It specifically...
-
Cross-Section Calculations for Electron-Impact Ionization of Pyrimidine Molecule and Its Halogenated Derivatives: 2-Chloropyrimidine, 5-Chloropyrimidine, 2-Bromopyrimidine and 5-Bromopyrimidine
PublikacjaThe total cross-sections for the single electron-impact ionization of pyrimidine (C4H4N2), 2-chloropyrimidine (2-C4H3ClN2), 5-chloropyrimidine (5-C4H3ClN2), 2-bromopyrimidine (2-C4H3BrN2) and 5-bromopyrimidine (5-C4H3BrN2) molecules have been calculated with the binary-encounter-Bethe model from the ionization threshold up to 5 keV. The input data for the BEB calculations concerning electronic structure of the studied targets have...
-
Crystal Structures of d-Lyxono-1,4-lactone and Its O-Tosyl Derivative
Publikacjaγ- and δ-lactones were formed by bromine oxidation of commercially available D-lyxose, as confirmed by IR analysis. The former was isolated, and its structure was confirmed by NMR spectra and X-ray analysis. In this structure, the presence of both intermolecular and intramolecular hydrogen bonds was found. Intermolecular interactions in the crystal were illustrated using the Hirshfeld surfaces. Due to steric reasons, 3,5- O-isopropylidene-D-lyxono-1,4-lactone...
-
Cu-incorporated NH2-MIL-125(Ti): a versatile visible-light-driven platform for enhanced photocatalytic H2 generation and CO2 photoconversion
Publikacja -
Cultivating Cultural Competence: Exploring Kramsch's Framework in Language Education
Publikacja -
Current advances in surface wettability in food packaging materials: Strategies, methods and future trends
PublikacjaSurface wettability plays a significant role in the functionality and safety of food packaging materials, influencing factors such as moisture resistance, microbial growth, and the effectiveness of active packaging technologies. The present study provides an in-depth investigation of the fundamental concepts underlying surface wettability, including contact angle theory, surface energy, measurement and characterisation, and how...
-
Cytotoxicity of ZnO nanoparticles in human melanocyte cells in the presence or absence of UV radiation: A preliminary comparative study with TiO2 nanoparticles
PublikacjaZinc oxide nanoparticles (ZnONPs) and titanium dioxide nanoparticles (TiO2NPs), due to their nanometric size and photostability, are increasingly used as ingredients in sunscreens to absorb and scatter UV radiation. However, the current state of knowledge is insufficient to guarantee their safety. Therefore, the objectives of this study were to evaluate the cytotoxicity of ZnONPs and TiO2NPs in the presence and absence of UV radiation...
-
Czy inżynier budownictwa musi być nieomylny?
PublikacjaJakość dokumentacji projektowej oraz zachowanie reżimu technologicznego podczas realizacji robót budowlanych mają decydujący wpływ na późniejsze bezpieczeństwo konstrukcji, jak również bezpieczeństwo użytkowania obiektów budowlanych. Nie bez znaczenia jest także późniejszy sposób eksploatacji tych obiektów. Błędy i niedociągnięcia występujące obecnie w szerokorozumianym budownictwie wzbudzają pytanie czy inżynier budownictwa ma...
-
Czy możemy symulować obrazy CT bez rzeczywistych skanów? Możliwości i ograniczenia modeli matematycznych
Publikacja -
Czy to są drapieżne czasopisma, konferencje? – w poszukiwaniu odpowiedzi
Publikacja
Rok 2024
-
C-63 | Effects of Dapagliflozin and Empagliflozin on 6-Minute Walk Distance in Heart Failure With Preserved and Reduced Ejection Fraction: A Systematic Review and Meta-Analysis of Randomized Controlled Trials
Publikacja -
Calculation of electron scattering lengths on Ar, Kr, Xe, Rn and Og atoms
PublikacjaFocusing on the noble gases, we calculate the scattering potential using the Dirac-Coulomb Hamiltonian supplemented with a model polarization potential. We determine the scattering lengths using two methods, namely phase shifts for very small scattering energies and the shape of the wave function for zero scattering energy. We compare our theoretical electron scattering length results on Ar, Kr and Xe atoms with existing experimental...