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Corrosion Properties of Dissimilar AA6082/AA6060 Friction Stir Welded Butt Joints in Different NaCl Concentrations
PublicationA solid-state friction stir welding method which is increasingly used in the marine and shipbuilding industry, has been developed to produce welds with high mechanical properties. In seawater, the oxide layer of aluminium is attacked by Cl− ions resulting in its disruption and formation of pitting corrosion. It is particularly important to determine the electrochemical properties of the produced welds and to evaluate the efect...
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Hydrogen direct reduction and reoxidation behaviour of high-grade pellets
PublicationHigh grade pellets with basicity index close to 0.5 were directly reduced in pure hydrogen atmosphere. The reduction experiments were performed in the temperature range 800 e1000 C at the pressure of 8 bar. The pellets internal structure was analysed through micro tomography observations in the unreduced and reduced conditions. After reduction, the pellets showed a variation of porosity up to more than 15% with a remarkable change...
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Occurrence of Trichocolea tomentella (Ehrh.) Dumort. (Marchantiophyta, Trichocoleaceae) in the Polish Carpathians: distribution, habitat preferences, current threats, and recommendations
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Mechanical Properties and Sliding Wear Resistance of Suspension Plasma Sprayed YSZ Coatings
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Monitoring systemów pracujących w technologii WiMAX
PublicationOmówiono stan standaryzacji WiMAX i możliwe zastosowania tej technologii. Wskazano na potrzebę istnienia narzędzi monitorujących oraz opisano problemy, jakie pojawiają się w związku z wytwarzaniem oraz użytkowaniem tego typu narzędzi. Dokonano krótkiego przeglądu istniejących narzędzi do monitoringu, a także zaproponowano własny autorski system monitorowania sieci WiMAX. Opisano jego przykładowe możliwości oraz przedstawiono wyniki...
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Sawing Processes as a Way of Determining Fracture Toughness and Shear Yield Stresses of Wood
PublicationA new computational model, based on fracture mechanics, was used to determine cutting forces. Unlike traditional computing methods, which depend on many coefficients reflecting the machining of solid wood, the new model uses two main parameters: fracture toughness and shear yield stresses. The aim of this study was to apply this new method to determine these parameters for the tooth cutting edge principal positions and longitudinal...
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New approaches to cutting resistance estimation of wood cutting process with circular-saw blades
PublicationTheoretical and experimental determination of values of cutting resistance belongs to the basic and simultaneously the most developed field of mechanics of this process. Energetic effects of wood sawing process are mainly calculated on the basis of the specific cutting resistance which, in wood cutting, is a function on a lot of factors. In this paper new method for calculation of cutting resistance is described. The latter method...
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PBS/B2/6/2013 .
ProjectsProject realized in National Center for Research and Deveopment according to . agreement from 2013-01-01
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Superconductivity and magnetism in new binary compounds R-Rh and R-Ir (R-rare earth)
ProjectsProject realized in Department of Solid State Physics according to 0205/DIA/2017/46 agreement from 2017-08-29
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WCh - Bt, Ch, TCh, ZT - s1: 2022/23 (A.Tlałka)
e-Learning CourseseKurs do przedmiotu Matematyka sem.1 dla kierunków Biotechnologia, Chemia, Technologia Chemiczna I Zielone Technologie Wydziału Chemicznego. Rok akademicki 2022/2023 (Okładka kursu - https://pixabay.com/pl/photos/matematyka-komputer-laptop-biznes-3821034/)
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XII Międzynarodowa Konferencja GAMBIT 2018
EventsKonferencja GAMBIT jest poświęcona problematyce bezpieczeństwa ruchu drogowego. Tematem przewodnim tegorocznej, dwunastej edycji jest rozwój innowacji drogowych na rzecz bezpieczeństwa.
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Rola pomiaru efektywności szkoły wyższej w kształtowaniu jej pozycji konkurencyjnej
PublicationPubliczne uczelnie wyższe, szczególnie techniczne, aby utrzymać się na konkurencyjnym rynku usług edukacyjnych, muszą dbać o efektywność swojego funkcjonowania. Uzyskanie przewagi na konkurencyjnym rynku edukacyjnym wymaga od uczelni działań przedsiębiorczych. Sukces wielu tego typu działań uzależniony jest od ilościowej oceny różnych parametrów. Jedną z metod pozwalających na ilościową ocenę efektywności jest Data Envelopment...
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Usieciowienie wymiaru sprawiedliwości a wyzwania dla kadry zarządzającej
PublicationCelem artykułu jest udzielenie odpowiedzi na pytanie, czy kadra zarządzająca jest przygotowana do realizacji wyzwań związanych z usieciowieniem wymiaru sprawiedliwości oraz jakimi narzędziami powinien dysponować nowoczesny wymiar sprawiedliwości, aby skutecznie przygotować kadrę zarządzającą sądami do zmian w zarządzaniu. Organizacja wymiaru sprawiedliwości, a w jej ramach poszczególne sądy ulega przeobrażeniom. Dzieje się tak...
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Semi- incremental construction of minimal cyclic finite state automata usingcontinuation classes.
PublicationMinimalne automaty skończone są często wybierane do przedstawiania słowników morfologicznych języka naturalnego. Wśród ich zalet znajdują się duża szybkość rozpoznawania i małe wymagania pamięciowe. Tłumaczenie opisów morfologicznych opartych o klasy kontynuacji na minimalne, cykliczne automaty skończone jest tradycyjnie dokonywane w kilku fazach, zawierających tworzenie automatu niedeterministycznego z przejściami etykietowanymi...
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WCh - Bt, Ch, ChB, TCh: Egz. popr. sem.1 - 2019/2020 (A.Dąbrowicz-Tlałka)
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Morphometric parameters of the Renardbreen as important factors determining the spatial distribution of chemical compounds on the glacier surface (Bellsund, Svalbard)
PublicationThis paper concern influence of the morphometric parameters (height, length and slope of the glacier) on the spatial distribution of the physicochemical parameters (pH, electrical conductivity, total organic carbon) determined in the ice and snow samples collected from the surface of Renardbreen during summer season of 2012. Obtained results allow to assume also a significant changes in a spatial distribution of other chemical...
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Pulsowo-różnicowa woltamperometria jako narzędzie pozwalające na wyznaczenie wartości mocy przeciwutleniającej
PublicationStandardowy potencjał redukcji (E0) jako parametr określający zdolność przeciwutleniaczy, jak np. flawan-3-oli do przyjmowania elektronów wykazywał wysoką korelację z ich aktywnością biologiczną. Jednak, w przypadku oceny całkowitej aktywności przeciwutleniającej mieszanin tych związków, parametr ten może okazać się być niewystarczającym. Bowiem do określenia tzw. mocy przeciwutleniającej ang. antioxidant power (AOP) powinny być...
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Therapeutic Potential of Multifunctional Derivatives of Cholinesterase Inhibitors
PublicationThe aim of this work is review of tacrine analogues from the last three years, which were not included in the latest review work, donepezil and galantamine hybrids from 2015 and rivastigmine derivatives from 2014. In this account we summarize the efforts toward the development and characterization of non-toxic inhibitors of cholinesterases based on mentioned drugs with various interesting additional properties such as antioxidant,...
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Herbal Resources in the medication of depression during pandemic COVID-19
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Study of effect of phosphate and uranium ions on the thermal properties of surfactant-modified natural red clay using TG–FTIR–MS techniques
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Amine-functionalized magnetite-silica nanoparticles as effective adsorbent for removal of uranium(VI) ions
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Turre cum capellis suis – identification of an earlier phase of the Holy Cross church at Tar – Stancija Blek (Tar-Vabriga – Torre-Abrega, Istria)
PublicationThe paper reports the results of the first campaign of excavations at the Church of the Holy Cross near Stancija Blek (Tar-Vabriga – Torre-Abrega municipality, Istria), which is close to the multiphase settlement of Old Tar. A trial trench behind the rear wall of the church and along its southern perimetral wall revealed an earlier building and one grave. Though the uncovered remains are scanty, several distinct architectural...
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Modulation of rat hepatic and kidney phase II enzymes by cabbage juices: comparison with the effects of indole-3-carbinol and phenethyl isothiocyanate
PublicationZbadano wpływ soków ze świeżej i kiszonej kapusty na ekspresję i aktywność takich enzymów II fazy jak transferazy S-glutationowe i oksydoreduktaza NQO1 w wątrobie i nerkach szczurów, którym podawano wspomniane soki doustnie. Uzyskane wyniki porównano z oznaczeniami uzyskanymi po doustnym podaniu wyizolowanych produktów degradacji glukozynolanów, indolo-3-karbinolu i izotiocyjanianu fenyloetylu. Wszystkie testowane czynniki powodowały...
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Effect of Natural Aging of Biochar on Soil Enzymatic Activity and Physicochemical Properties in Long-Term Field Experiment
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Impact of Subsurface Application of Compound Mineral Fertilizer on Soil Enzymatic Activity under Reduced Tillage
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Molecular differences in mitochondrial DNA genomes of dogs with malignant mammary tumours
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Preparation and Surface Characterization of Chitosan-Based Coatings for PET Materials
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Health Risk Assessment of Exposure to Nitrates in Drinking Water Depending on the Source of Its Origin
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Characteristics of Polypeptide/Phospholipid Monolayers on Water and the Plasma‐Activated Polyetheretherketone Support
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WETTABILITY OF CHITOSAN-MODIFIED AND LIPID/POLYPEPTIDE-COATED PEEK SURFACES
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Wetting Properties of Polyetheretherketone Plasma Activated and Biocoated Surfaces
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Design of self-cleaning and self-disinfecting paper-shaped photocatalysts based on wood and eucalyptus derived cellulose fibers modified with gCN/Ag nanoparticles
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Modulation of carcinogen metabolizing cytochromes p450 in rat liver and kidney by cabbage and sauerkraut juices: comparison with the effects of indole-3-carbinol and phenethyl isothiocyanate
PublicationThis study investigated the effect of raw cabbage and sauerkraut juices on the activity and expression of CYP1A1, 1A2, 1B1 and 2B in Wistar rat liver and kidney. The results were compared with those of two commercially available products of glucosinolates degradation: indole-3-carbinol (I3C) and phenethyl isothiocyanate (PEITC). Significant differences in the effect of the cabbage juices as well as I3C and PEITC between the liver...
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Determination of Antioxidant Activity of Vitamin C by Voltammetric Methods
PublicationVoltammetric methods—cyclic (CV) and differential pulse voltammetry (DPV) are considered the most appropriate way to evaluate antioxidant activity of redox active compounds. They provide information about both mechanism and kinetics of electrochemical oxidation of antioxidants as well as their physical and chemical properties such as the redox potential or the number of electrons transferred. These methods are helpful for understanding...
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Modulation of the expression of enzymes metabolizing xenobiotics in rat liver and kidney by oral administration of cabbage and sauerkraut juice.
PublicationObydwa soki z kapusty mogą wpływać selektywnie na ekspresję genów zaangażowanych w aktywację i detoksykację kancerogenów. Efekt ten zależy od sposobu traktowania i może zależeć od rodzaju tkanki.
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Jakub Jabłoński inż.
PeopleEducation In 2016 Jakub Jabłoński finished Zbigniew Herbert XX High School in Gdańsk (math-physics-IT profile). In 2017 he started an undergraduate course in Civil Engineering at the Faculty of Civil and Environmental Engineering of the Gdańsk University of Technology, which he graduated in 2021 with the title of Bachelor of Science in Engineering. During his studies he took active part in the scientific association "Hevelius". Employment About...
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Układ do sortowania klocków
InventionsUrządzenie służy do sortowania klocków LEGO na podstawie kształtu i rozmiaru klocków. Wyznacznikiem odmienności klocka jest jego numer katalogowy.
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Evaluating the risk of endometriosis based on patients’ self-assessment questionnaires
PublicationBackground Endometriosis is a condition that significantly affects the quality of life of about 10 % of reproductive-aged women. It is characterized by the presence of tissue similar to the uterine lining (endometrium) outside the uterus, which can lead lead scarring, adhesions, pain, and fertility issues. While numerous factors associated with endometriosis are documented, a wide range of symptoms may still be undiscovered. Methods In...
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The Use of Cluster Analysis to Evaluate the Impact of COVID-19 Pandemic on Daily Water Demand Patterns
PublicationProper determination of unitary water demand and diurnal distribution of water consumption (water consumption histogram) provides the basis for designing, dimensioning, and all analyses of water supply networks. It is important in the case of mathematical modelling of flows in the water supply network, particularly during the determination of nodal water demands in the context of Extended Period Simulation (EPS). Considering the...
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Energy resolution and light yield non-proportionality of ZnSe:Te scintillator studied by large area avalanche photodiodes and photomultipliers
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Religiosity and Attitudes towards Health, Disease, Death and the Use of Stimulants among Jehovah’s Witnesses
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Lipophagy and Lipolysis Status in Lipid Storage and Lipid Metabolism Diseases
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Assessment of phase stability and in vitro biological properties of hydroxyapatite coatings composed of hexagonal rods
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Epidemiological evaluation of paediatric psoriasis patients at the Dermatology Department
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The relationship between children's non-nutrient exposure to cadmium, lead and zinc and the location of recreational areas - Based on the Upper Silesia region case (Poland)
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Lead in human teeth dentine as a bio-indicator of environmental exposure to lead
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Heterostructure based on exfoliated graphitic carbon nitride coated by porous carbon for photocatalytic H2 evolution
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High catalytic performance of tungsten disulphide rodes in oxygen evolution reactions in alkaline solutions
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The interaction between bacterial abundance and selected pollutants concentration levels in an arctic catchment (southwest Spitsbergen, Svalbard)
PublicationPersistent organic pollutants (POPs) have been a topic of interest in environmental sciences for > 60 years. POPs in the Arctic have been investigated since the 1970s, when first atmospheric measurements revealed the presence of these pollutants in the polar regions. Major contaminant transport routes to the Arctic include atmospheric and oceanic transport, as well as inflow from rivers and sea ice. The sources of pollutants, such...
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Stable and degradable microgels linked with cystine for storing and environmentally triggered release of drugs
PublicationEnvironmentally sensitive, degradable microgels based on poly(N-isopropylacrylamide) (pNIPA) crosslinked with the diacryloyl derivative of cystine (BISS) were synthesized by applying surfactant-free emulsion polymerization. pNIPA contributed the sensitivity to temperature to the microgels and the cross-linker made them degradable and sensitive to pH. The morphology of the microgels was investigated by using scanning and transmission...