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Początek Gdyńskiego Systemu Wodociągowego Rozbudowa układu wodociągowego na Kępie Oksywskiej w latach 1933 - 1939. Część III.
PublicationBudowa sieci osiedlowej na terenie „Nowego Oksywia”. Przyłączenie wodociągu Marynarki Wojennej do budowanego układu na Kępie Oksywskiej. Komplikacje przebiegu procesu budowy rurociągu do Babiego Dołu. Uzbrojenie terenu osiedla "Paged". Przekształcenie na terenie Oksywia struktury sieci rozgałęzieniowej w pierścieniową. Konsolidacja układu na Kępie Oksywskiej z wodociągiem grupowym Wielkiej Gdyni. Realizacja zarządzenia o przymusie...
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Nina Rizun dr
PeopleNina Rizun is an assistant professor at the Faculty of Management and Economics at the Gdańsk University of Technology. In October 1999 she obtained a PhD degree in technical sciences in the Faculty of Enterprise Economy and Production Organization, National Mining Academy, Dnipropetrovsk, Ukraine. PhD thesis title: Development of Complex Subsystem of the Organization and Planning of Mining and Transport Processes. In the years...
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Industry 4.0—Supporting Industry in Design Solutions—All-in-One Computer Cover
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ATP4A autoimmunity andHelicobacter pyloriinfection in children with type 1 diabetes
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Oxidative Stress Level in the Testes of Mice and Rats during Nickel Intoxication
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Phase Transitions and Structural Changes in DPPC Liposomes Induced by a 1-Carba-Alpha-Tocopherol Analogue
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Environmentally Friendly Fabrication of High-Efficient Fe-ZnO/Citric Acid-Modified Cellulose Composite and the Enhancement of Photocatalytic Activity in the Presence of H2O2
PublicationIn the present study, a novel Fe-ZnO/citric acid-modified cellulose composite (x%Fe-ZnOy% CAC) was synthesized using an environmentally friendly hydrothermal method. The obtained samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), UV−vis diffuse reflectance spectroscopy (DRS), Fourier transform infrared spectroscopy (FTIR), nitrogen physisorption, and electrochemical and photocurrent density...
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Characteristics of LaCo 0.4 Ni 0.6-x Cu x O 3-δ ceramics as a cathode material for intermediate-temperature solid oxide fuel cells
PublicationIn this study, the effects of Cu-ion substitution on the densification, microstructure, and physical properties of LaCo0.4Ni0.6-xCuxO3-δ ceramics were investigated. The results indicate that doping with Cu ions not only enhances the densification but also promotes the grain growth of LaCo0.4Ni0.6-xCuxO3-δ ceramics. The Cu substitution at x ≤ 0.2 can suppress the formation of La4Ni3O10, while the excess Cu triggers the formation...
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Bone status in adolescents and young adults with type 1 diabetes: a 10-year longitudinal study
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Evaluation of ChatGPT Applicability to Learning Quantum Physics
PublicationChatGPT is an application that uses a large language model. Its purpose is to generate answers to various questions as well as provide information, help solve problems and participate in conversations on a wide range of topics. This application is also widely used by students for the purposes of learning or cheating (e.g., writing essays or programming codes). Therefore, in this contribution, we evaluate the ability of ChatGPT...
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Numerical simulations of transonic flow with film cooling and jet vortex generators
PublicationW pracy przedstawiono wyniki obliczeń przepływu transonicznego na stronie ssącej łopatki turbiny gazowej. Obliczenia wykonano dla geometrii komory pomiarowej w tunelu transonicznym IMP PAN, zaprojektowanej tak, aby odwzorować warunki przepływowe istniejące w palisadzie turbinowej. Przedstawiono wyniki obliczeń przepływu z zastosowaniem otworów chłodzących (film cooling) oraz strumieniowych generatorów wirów. Porównano je z danymi...
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Influence of water salinity on corrosion risk - the case of the southern Baltic Sea coast.
PublicationWater corrosivity in Gdansk Bay, Poland, the southern part of the Baltic Sea, was investigated. The analysed region is heavily industrialized, and the coastline is very diverse. Twenty-seven test points along the coastline were selected. Water parameters such as salinity, total dissolved solids content, resistivity, conductivity, oxygenation, pH and corrosion rate were determined. The results of the investigation are presented....
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Recycling of waste tires in the light of binding law in Poland
PublicationA risings of large quantities of used rubber products, especially used tires has been increasing every year in Poland, in 2006 it was 160 thousand. The waste management and recycling of used tires become a major environmental problem. Well known methods of utilization of used tires are presented in this article. The main problem is ignorance of the law by tyre manufactures and users. In Poland first act on waste introduces ban...
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Rola sektora ICT w gospodarce polskiej
Publicationsektor ict ma kluczowe znaczenie dla zwiększenia produktywności oraz pobudzenia innowacji w wielu krajach. dla krajów transformujących się, takich jak polska, rozwój sektora ict jest warunkiem koniecznym dla szybszego niwelowania różnic w poziomie i tempie rozwoju gospodarczego między najlepiej rozwiniętym krajami a krajami rozwijającymi się (transformującym sięi).celem niniejszego artykułu jest analiza stanu sektora ict w polsce,...
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Ujednolicony opis zasobów uczelnianych
PublicationArtykuł opisuje możliwości ujednolicenia opisu zasobów uczelnianych oraz scalenia rozproszonych baz danych w jedną centralną bazę. Przedstawiono charakterystykę przechowywanych danych zasobów w ramach uczelni. Opisano motywację dla stworzenia wspólnego opisu zasobów oraz scalonej bazy danych na potrzeby uczelnianych systemów informatycznych. Omówiono struktury danych wraz z istniejącymi relacjami pomiędzy danymi. Komponent do zarządzania...
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Gdańsk Urban Initiative Laboratory
PublicationGdansk is Poland's principal seaport, situated on the southern edge of the Gdansk Bay on the Baltic Sea. The city is the capital and largest city of the Pomeranian Voivodeship. Gdansk, in a conurbation with the city of Gdynia and the resort town of Sopot, and suburban communities, jointly forms Poland's fourth largest metropolitan area, with a population approaching 1.4 million. The pathways towards the Micro ULL FWE Nexus Square...
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Zastosowanie oprogramowania COMSIS do oceny dynamicznej odporności na zakłócenia cyfrowych układów kombinacyjnych.
PublicationWyniki badania odporności układów cyfrowych na zakłócenie dynamiczne w istotny sposób zależą od parametrów sygnału stymulującego. Proponowana metodyka zakłada pobudzanie badanego układu sygnałem szumu białego o określonej szerokości pasma częstotliwości. Badania symulacyjne z modelem układu progowego oraz szybkiego komparatora z histerezą przeprowadzono w środowisku COMSIS. Uzyskane wyniki potwierdzają, że im węższe pasmo szumu...
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ZTNBD - Zaawansowane technologie nierelacyjnych baz danych 2022-2023
e-Learning CoursesThe course is addressed to master-degree students in the field of computer science in the second semester.
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Odkrywanie wiedzy i systemy rekomendacyjne 2022/23
e-Learning CoursesPrzedmiot dla specjalności Uczenie Maszynowe na drugim stopniu studiów stacjonarnych na kierunku Informatyka. Przedmiot finansowany z projektu AI Tech (https://eti.pg.edu.pl/ai-tech).
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Effects of beach wrack on the fate of mercury at the land-sea interface – A preliminary study
PublicationSince the 1970s, the amount of aquatic plants and algae debris, called beach wrack (BW), has increased along the shores of industrialised regions. The strong ability of primary producers to accumulate pollutants can potentially result in their deposition on the beach along with the BW. Despite that, the fate and impact of such pollutants on sandy beach ecosystems have not been investigated so far. This study examines the fate...
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Stability studies of selected polycyclic aromatic hydrocarbons in different organic solvents and identification of their transformation products
PublicationGłównym problemem w laboratoriach analitycznych jest konserwacja próbek i ekstraktów przeznaczonych do analizy. Rozpatrując procesy degradacji z analitycznego punktu widzenia i związanej z tym wiarygodności uzyskiwanych wyników pod uwagę należy wziąć wpływ procesów degradacji w badanym elemencie środowiska na poziom stężenia składników śladowych; wpływ tych samych procesów na poziom składników śladowych w już pobranych próbkach...
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Guided waves for nondestructive diagnostics of embedded waveguides
PublicationThe thesis concentrates on comprehensive theoretical, numerical and experimental analysis of guided wave propagation in bars embedded in concrete or mortar. The investigations are focused on a particular type of objects representing a laboratory model of a ground anchor. Complex description of wave propagation phenomena in partially embedded bars is given and its application in...
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Understanding the kinetics and atmospheric degradation mechanism of chlorotrifluoroethylene (CF2=CFCl) initiated by OH radicals
PublicationThe atmospheric degradation of chlorotrifluoroethylene (CTFE) by OH˙ was investigated using density functional theory (DFT). The potential energy surfaces were also defined in terms of single-point energies derived from the linked cluster CCSD(T) theory. With an energy barrier of −2.62 to −0.99 kcal mol−1 using the M06-2x method, the negative temperature dependence was determined. The OH˙ attack on Cα and Cβ atoms (labeled pathways...
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The structure of vanadate glass-ceramics containing BaTiO3.
Open Research DataThe structure of vanadate glass-ceramics doped with BaTiO3 was measured by SEM technique. Samples of the composition of x[BaO,TiO2]–(80 − x)V2O5–20Bi2O3 where x = 5, 10 and 15 in mol% were prepared by a conventional melt quenching technique. The melting was performed in alumina crucibles at the temperature of 1273 K–1373 K. The melts were poured on...
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Odkrywanie Wiedzy i Systemy Rekomendacyjne 2023/24
e-Learning CoursesPrzedmiot dla specjalności Uczenie Maszynowe na drugim stopniu studiów stacjonarnych na kierunku Informatyka. Przedmiot został sfinansowany z projektu AI Tech (https://eti.pg.edu.pl/ai-tech).
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Partial dominated schedules and minimizing the total completion time of deteriorating jobs
PublicationA problem of scheduling deteriorating jobs on a single processor is considered. The processing time of a job is given by a function pi=ai+bisi, where si is the starting time of the job, ai>=0, bi>=0, for i=1,...,n. Jobs are non-preemptive and independent and there are neither ready times nor deadlines. The goal is to minimize the total weighted completion time. We show how to employ the concept of non-dominated schedules to construct...
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Aleksandra Parteka dr hab. inż.
PeopleAbout me: I am an associate professor and head of doctoral studies at the Faculty of Management and Economics, Gdansk University of Technology (GdanskTech, Poland). I got my MSc degree in Economics from Gdansk University of Technology (2003) and Universita’ Politecnica delle Marche (2005), as well as MA degree in Contemporary European Studies from Sussex University (2006, with distinction). I received my PhD in Economics...
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Struktura szkieł krzemianowych z atomami Pb i Bi w świetle badań widm ab-sorpcyjnych promieniowania rentgenowskiego i symulacji dynamiczno-moleku- larnych.**2002, 156 s. 96 rys. 21 tab. bibliogr. 163 poz. maszyn. Rozprawa doktorska /20.12.2002/ WFTiMS PG. Promotor: dr hab.inż. L. Murawski, prof. ndzw. PG.
PublicationCelem niniejszej rozprawy było zbadanie blisko- i średniozasięgowego upo-rządkowania wokół atomów Pb, Bi w szkłach niemodyfikowanych i modyfikowanychpoprzez wygrzewanie w atmosferze wodoru, zbadanie wpływu warunków redukcji iskładu szkła na proces aglomeracji atomów Pb i Bi, określenie podatności ba-danych szkieł na modyfikącję strukturalną oraz weryfikacja oddziaływań mię-dzyatomowych używanych w symulacjach MD.
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Iwona Dorota Bąk dr hab.
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The hydrodynamic pressure field of the ship Zodiak, measurements and calculations
PublicationThe article presents the results of measurements of the slowly changing hydrodynamic pressure field HPF generated by the movement of the ship, Zodiak, in the Bay of Gdansk. The measurement results have been obtained in the framework of the program of the work in Siramis, under the auspices of the European Defence Administration of the EU, by the research team of the Naval Academy in Gdynia. The measurement results were compared with...
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Determination of Biogenic Amines in Wine Using Micellar Electrokinetic Chromatography
PublicationProduction on a large-scale of fermented alcoholic drinks made from different kinds of fruits is carried out in homes. Although wine laws regulating home production exist, they do not include upper concentration limits of biogenic amines. Therefore, a quick and inexpensive way to determine BAs in wine is crucial. A new analytical method based on micellar electrokinetic chromatography has been developed for the separation of the...
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Procedure of determination of volatile trihalomethanes in human urine with perwaporation and gas chromatography
PublicationPraca przedstawia wyznaczanie podstawowych parametrów walidacyjnych nowej procedury oznaczania lotnych związków chlorowcoorganicznych z grupy trihalometanów w próbkach moczu ludzkiego, opartej na zastosowaniu:- techniki perwaporacji na etapie izolacji i wzbogacania analitów;- bezpośredniego dozowania próbek ekstraktów (permeatu) do kolumny chromatograficznej;- chromatograficznego rozdzielanie mieszaniny na poszczególne składniki;-wykorzystaniu...
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Wykorzystanie xml do reprezentacji cyfrowych dokumentów muzycznych
PublicationW bibliotekach cyfrowych dokumentów muzycznych potrzebny jest format pozwalający na wymianę danych różnego typu związanych z dokumentem muzycznym. Otwarty format XML posiada wiele zalet, które pozwalają na zastosowanie go w tej bibliotece. W rozdziale zwrócono uwagę na możliwość wykorzystania formatów MPEG-7, MARCXML oraz MusicXML do opisania różnorodnych aspektów muzyki. Połączenie wszystkich informacji związanych z dokumentem...
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Projektowanie wiedzy. Relacyjne bazy danych (ISBN 978-83-7348-702-4)
PublicationZałożeniem podręcznika Projektowanie wiedzy – relacyjne bazy danych jest kształtowanie praktycznych umiejętności opartych na wiedzy z zakresu tworzenia relacyjnych baz danych z wykorzystaniem narzędzi Microsoft Access. Książka zawiera zestawy ćwiczeń i zadań wraz z rozwiązaniami, które umożliwiają skuteczną naukę prawidłowego tworzenia modelu danych. Opracowanie wyróżnia się na tle innych prac bardzo szczegółowym i dokładnym...
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Zr‐Based Metal‐Organic Framework UiO‐66/Ultem® 1000 Membranes for Effective CO2/H2 Separation
PublicationMixed-matrix membranes (MMMs) using UiO-66 nanofillers as dispersing inorganic phase and polyetherimide (PEI) as continuous polymeric matrix were synthesized. Different UiO-66 loadings of 10, 20, and 30 wt % were applied. The morphology and UiO-66 dispersion over the prepared MMMs were examined. Gas separation measurements were performed for H2/CO2 gas mixture to evaluate the influence of UiO-66 on the separation yield of resulting...
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Do the New Requirements for the Use of Energy Efficient Lighting Design Mean the End of Creativity?,
PublicationThis paper addresses issues strongly connected to recent environmental discussions which are currently taking place in Europe, Asia, America, Australia and other parts of the world about global warming, the Greenhouse Effect, light pollution and other negative impacts artificial lighting has on our planet and what can be done about it. The author also attempts to answer indirectly two of the most important questions for lighting...
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Adaptation of Architectural Heritage in the Era of Climate Change. Torpedo Platform in Babie Doły
PublicationThe paper provides original insight into the problem of adap¬tation of historical objects in the era of climate change. It conveys a message that in times of climate crisis, there is a need to go beyond an anthropocentric perspective, specifically, that architec¬ture should not only be designed for people, but should also provide a framework for nature. As well as shaping spaces for human beings, the architect is also responsible...
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Measurements of Dispersed Phase Velocity in Two-Phase Flows in Pipelines Using Gamma-Absorption Technique and Phase of the Cross-Spectral Density Function
PublicationThis paper concerns the application of the gamma radiation absorption method in the measurements of dispersed phase velocity in two-phase flows: liquid–gas flow in a horizontal pipe- line and liquid–solid particles in a vertical pipe. Radiometric sets containing two linear 241Am gamma radiation sources and two NaI(Tl) scintillation detectors were used in the research. Due to the stochastic nature of the signals obtained from the...
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Travelling Architecture: Vanishing heritage of Gypsy caravans in Poland
PublicationThe wandering Gypsy/Roma groups began arriving in the territory of Poland in the fifteenth century. Leading a nomadic life, they did not develop any form of a built house until the nineteenth century, until the first wooden caravans appeared. In the twentieth century, the architecture of Gypsy caravans began to thrive. They developed into several different forms of meticulously decorated wooden mobile houses. At the same time however,...
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Pseudo-superparamagnetic behaviour of bariumhexaferrite particles
PublicationThe effect of hexadecyltrimethylammonium bromide (CTAB) addition on the crystal structure, morphology,and magnetic properties of co-precipitated hexagonal barium ferrite was investigated. For afixed amount ofsurfactant, different Fe3+concentrations and Fe3+/Ba2+ratios were used to optimize the formation ofsingle-phase barium ferrite particles. The results indicated that the obtained ferrite particles exhibitedcoercivity changes...
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Nitrogen and phosphorus compounds in coastal aquifers in Puck municipality area (northern Poland)
Publication1. Groundwater study shows local variations in chemical composition of selected aquifers caused by human impact The diversity is mainly manifested in • time variation of groundwater chemical composition of all analyzed parameters especially in shallow aquifers (Q1) • relationship between t he ground water chemical composition and depth of the aquifer where an inverse concentration distribution occurs higher concentrations are observed...
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Text Categorization Improvement via User Interaction
PublicationIn this paper, we propose an approach to improvement of text categorization using interaction with the user. The quality of categorization has been defined in terms of a distribution of objects related to the classes and projected on the self-organizing maps. For the experiments, we use the articles and categories from the subset of Simple Wikipedia. We test three different approaches for text representation. As a baseline we use...
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Analogues of trypsin inhibitor SFTI-1 modified in the conserved P1′ position by synthetic or non-proteinogenic amino acids retain their inhibitory activity
PublicationA series of linear and monocyclic (with a disulfide bridge only) analogues of trypsin inhibitor SFTI-1 modified in the P-1 and/or P-1' positions were synthesized by the solid-phase method. In the substrate specificity P-1 position, Phe or N-benzylglycine (Nphe) were introduced, whereas the conserved Ser6 in Bownam-Birk (BBI) inhibitors was replaced by Hse (L-homoserine), Nhse [N-(2-hydroxyethyl)glycine], Sar, and Ala. Kinetic studies...
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Material Flow Analysis in a cooked mussel processing industry
PublicationGalicia (NW Spain) is an ideal environment for mussel culture owing to its excellent natural conditions. It is the first Spanish and European mussel producer and the second worldwide after China. More than 50% of the mussel collected in Galicia is used in the processing industry, which produces different products, as cooked mussel that is canned, frozen or used in the food industry. In this paper a methodology based on Life Cycle...
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Systemy radiokomunikacyjne w zastosowaniach specjalnych - ocena przydatności i przegląd rozwiązań
PublicationW pracy opisano wybrane wyniki analizy i prac badawczych prowadzonych w Katedrze Systemów i Sieci Radiokomunikacyjnych Politechniki Gdańskiej. W tym też kontekście opisano m.in. zastosowania i charakterystyki wybranych systemów radiokomunikacyjnych, istotnych z punktu widzenia służb bezpieczeństwa publicznego, takich jak np.: TETRA, TEDS, LTE oraz cdma2000. W ramach artykułu omówiono także zagadnienia związane z rozwojem techniki...
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Shaping the New Vistula Spit Channel: Political, Economic, and Environmental Aspects
PublicationIn September 2022, the new shipping channel in Poland was opened for service. It connects the Port of Elbląg and the Gdańsk Bay in Poland, cutting through the Vistula Spit and the Vistula Lagoon. It was intended to enable direct access to the Baltic Sea from the Port of Elbląg without crossing Russian territory. Originally conceptualized decades ago, it has taken its final shape only recently. Its construction was associated with...
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Maria Jolanta Milewska prof. dr hab. inż.
PeopleMaria Jolanta Milewska, po ukończeniu Technikum Chemiczno-Mechanicznego w Wąbrzeźnie (specjalizacja: przetwórstwo tworzyw sztucznych) kontynuowała naukę na Wydziale Chemicznym Politechniki Gdańskiej. W 1979 r. zdobywa tytuł mgr inżyniera na kierunku Chemia, o specjalizacji Lekka Synteza Organiczna. Studium Doktoranckie PG ukończyła w 1984 r. W 1983 r została zatrudniona na macierzystym wydziale w Katedrze Chemii Organicznej, początkowo...
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Sensitivity of the Baltic Sea level prediction to spatial model resolution
Publicationhe three-dimensional hydrodynamic model of the Baltic Sea (M3D) and...
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Application and modelling of Shape-Memory Alloys for structural vibration control: State-of-the-art review
PublicationOne of the most essential components of structural design for civil engineers is to build a system that is resistant to environmental conditions such as harsh chemical environments, and catastrophic disasters like earthquakes and hurricanes. Under these circumstances and disturbances, conventional building materials such as steel and concrete may demonstrate inadequate performance in the form of corrosion, deterioration, oxidizing,...
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Mercury in suspended matter of the Gulf of Gdańsk: Origin, distribution and transport at the land–sea interface
PublicationThe coastal regions of inland seas are particularly vulnerable to Hg pollution. An important carrier of toxic Hg in the marine environment is suspended matter originating from multiple sources. The present study was conducted in the Gulf...