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Search results for: FIRE TESTING
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Model Predictive Super-Twisting Sliding Mode Control for An Autonomous Surface Vehicle
PublicationThis paper presents a new robust Model Predictive Control (MPC) algorithm for trajectory tracking of an Autonomous Surface Vehicle (ASV) in presence of the time-varying external disturbances including winds, waves and ocean currents as well as dynamical uncertainties. For fulfilling the robustness property, a sliding mode control-based procedure for designing of MPC and a super-twisting term are adopted. The MPC algorithm has been...
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Improvements to the two-phase sandwich method for calculating the melting points of pure metals
PublicationThe thermophysical properties of metal alloys are often investigated via molecular dynamics (MD) simulations.An exact and reliable estimation of the thermophysical parameters from the MD data requires a properly and carefullyelaborated methodology. In this paper, an improved two-phase sandwich method for the determination of the metal meltingtemperature is proposed, based on the solid-liquid equilibrium theory. The new method was...
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BACTERIAL INACTIVATION VIA LASER-DRIVEN GOLD NANOPARTICLE HEATING: SIMULATION AND ANALYSIS
PublicationThis study utilizes CFD technique to simulate the inactivation of E. coli bacteria within a microfluidic chamber, employing gold nanoparticles irradiated by a laser beam. Employing a single-phase model, the presence of bacteria is considered by treating thermal properties in the governing equations as effective, combining those of water and bacteria using established correlations from scientific literature. The conversion of light...
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Assessment of metal removal in a surface flow constructed wetland treating landfill leachate
PublicationThe study concerns heavy metal retention and transformation processes in a free water surface constructed wetland treating landfill leachate in a temperate climate. The total effectiveness of heavy metals removal in the analyzed CW was evaluated basing on heavy metals inflow and outflow concentrations. The concentrations of eight heavy metals (Fe, Mn, Zn, Pb, Ni, Cu, Cr, Cd) in landfill leachate (LL) and sediments were measured....
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Properties of surface layers of titanium alloy Ti6Al4V after laser melting processes
PublicationThe article presents the investigation results of titanium alloy Ti6Al4V surface layer after laser melting process. The process of laser melting was performed using Nd-YAG laser. The evaluation of structure of the alloy as well as hardness and chemical composition was performed. It was shown that laser melting changes the structure and properties of titanium alloy Ti6Al4V and process parameters as scanning speed affects the thickness...
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Two-phase flow in heterogeneous porous media with non-wetting phase trapping
PublicationThis article presents amathematical model describing flowof two fluid phases in a heterogeneous porous medium. Zaproponowano model matematyczny przepływu dwufazowego w drobnoziarnistym ośrodku porowatym zawierającym inkluzje gruboziarniste. Inkluzje charakteryzują się niższą wartością ciśnienia wejścia dla płynu niezwilżającego (np. powietrze, ropa naftowa) niż materiał podstawowy. Podczas nawadniania takiego ośrodka dochodzi do...
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Wetting properties of biosurfactant (rhamnolipid) with synthetic surfactants mixtures in the context of soil remediation
PublicationWetting properties of synthetic surfactant Rokanol NL6, biosurfactant JBR 425 and their mixture have been investigated.The results show that synthetic surfactant addition worsens physicochemical properties of pure biosurfactant but exhibits much higher oil removal efficiency than biosurfactant does.
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Prosthetic Elements Made of the Ti-13Zr-13Nb Alloy by Selective Laser Melting
PublicationThe fabrication of the prosthetic foundations and bridges from the Ti-13Zr-13Nb alloy is described. The process was started from CAD/CAM design of 3D models of the foundations based on scanning of patient`s mouth. Next, 3D models were transformed into *.stl files for the manufacturing stage and then the manufacturing process by means of the selective laser melting with the SLM Realizer 100 equipment was made. The intrinsic structure...
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Residents’ Perception of Intangible Benefits and Costs Associated with Hosting Major Sporting Events
PublicationThe main purpose of this paper is to estimate on the basis of inhabitants’ perception the overall composite and aggregated scores of two major sporting events held in Ergo Arena hall, on the border of Gdańsk and Sopot, in northern Poland. The indirect aim is to identify the determinants affecting the monetary offers of the locals of the two cities. The research results unveil that major sporting events may determine the appearance...
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DESIGN AND THEORETICAL ANALYSIS OF A PROTOTYPE TILTING-PAD RADIAL BEARING WITH ADJUSTABLE CLEARANCE
PublicationThe article introduces a design and analysis results of a prototype ORC (organic Rankine cycle) turbo generator rotor assembly of 300kW power, supported by tilting-pad bearings of original design. The calculations were performed for a prototype turbo generator rotor. The shaft of this machine is supported with two radial bearings, lubricated with an unusual lubricant – a low-boiling-point agent. The main objective of the presented...
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Shading, Dusting and Incorrect Positioning of Photovoltaic Modules as Important Factors in Performance Reduction
PublicationThe amount of solar radiation reaching the front cover of a photovoltaic module is crucial for its performance. A number of factors must be taken into account at the design stage of the solar installation, which will ensure maximum utilization of the potential arising from the location. During the operation of a photovoltaic installation, it is necessary to limit the shading of the modules caused by both dust and shadowing by trees...
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Meeting Requirements Imposed by Secure Software Development Standards and Still Remaining Agile
PublicationThe paper introduces the AgileSafe method of selecting agile practices for software development projects that are constrained by assurance requirements resulting from safety and/or security related standards. Such requirements are represented by argumentation templates which explain how the evidence collected during agile practices implementation will support the conformity with the requirements. Application of the method is demonstrated...
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Residents' Perception of Intangible Benefits and Costs Associated with Hosting Major Sporting Events
PublicationThe main purpose of this paper is to estimate on the basis of inhabitants’ perception the overall composite and aggregated scores of two major sporting events held in Ergo Arena hall, on the border of Gdańsk and Sopot, in northern Poland. The indirect aim is to identify the determinants affecting the monetary offers of the locals of the two cities. The research results unveil that major sporting events may determine the appearance...
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Toxicity of ionic liquid cations and anions towards activated sewage sludge organisms from different sources – Consequences for biodegradation testing and wastewater treatment plant operation
PublicationIonic liquids (ILs) have attracted great interest in academia and industry during the last decade. So far, several ILs have been used in technological processes, from small scale to industrial applications, which makes it more and more likely that they will be released into the environment. Researches have been actively studying the environmental and toxicological bevaviour of ILs, but their influence on the activated sewage sludge...
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13th International Conference on Conservative Management of Spinal Deformities and First Joint Meeting of the International Research Society on Spinal Deformities and the Society on Scoliosis Orthopaedic and Rehabilitation Treatment – SOSORT-IRSSD 2016 meeting
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Zagrożenia dla środowiska naturalnego w działaniach firm regionu gdańskiego związanych z organizacją EURO 2012 a współpraca PPP
PublicationSukces ekonomiczny przedsiębiorców w Gdańsku może być wiekszy, jeżeli losowanie druzyn rozgrywających mecze w Gdańsku będzie korzystne. Jeśli druzyny europejskie przyjadą do Gdańska wraz ze swoimi kibicami, przedsiebiorca branż hotelowej i gastronomicznej mogą uzyskać wieksze dochody. Należy mieć na uwadze ochronę wód powierzchniowych i podziemnych Gdańska. Główne ujęcia wód podziemnych znajdują się w sąsiedztwie stadionu PGE...
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Comparison of mass spectrometry data and bioinformatics predictions to assess the bona fide localization of proteins identified in cell wall proteomics studies
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Wskaźnik siły nabywczej w zmieniającym się otoczeniu walutowym firm sektora MSP podejmujących międzynarodową działalność e-commerce
PublicationTechnologia E-Commerce znacząco ułatwiła firmom sektora MSP możliwość zaistnienia i prowadzenia działalności na rynkach zagranicznych. Stworzyło to nowe szanse, ale wprowadziło również nowe ryzyka do działalności, w tym w zakresie zmian koniunkturalnych oraz kursów walutowych. Niniejszy tekst przedstawia koncepcję prostych wskaźników walutowych, mających na celu szybką ocenę zmian atrakcyjności rynków zagranicznych wynikających...
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Uwarunkowania rozwoju polskich firm shipchandlerskich. Analiza krytycznych czynników wzrostu w odniesieniu do Neptun Ship Service Ltd.
PublicationW ekspertyzie dokonano analizy krytycznych czynników wzrostu dla firmy Neptun Ship Service Ltd.
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Steady-State Vibration Level Measurement of the Five-Phase Induction Machine during Third Harmonic Injection or Open-Phase Faults
PublicationMultiphase electric machines are increasingly used in various industries and for electromobility. Complex systems have been developed for the control and powering of multiphase machines, which require verification. The quality of control and the power supply of electric machines is usually evaluated by analyzing various electrical parameters. On the other hand, taking into account the fact that a motor is an electrical-mechanical...
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Results of timber material tests from a strength testing machine
Open Research DataThis dataset consists of an archive with TRA files with the results of timber (wooden rolls) material tests from an universal strength testing machine.
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Conference on File and Storage Technologies
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FIRA Robot World Congress
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All About Economy Film Meeting
EventsNa Wydziale Zarządzania i Ekonomii PG odbędzie się II edycja międzynarodowego "ECONOMY FILM MEETING" – festiwal starannie wyselekcjonowanych filmów ekonomicznych z naukowym komentarzem.
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Bien dire et bien aprandre: revue de médiévistique
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Magdalena Szuflita-Żurawska
PeopleHead of the Scientific and Technical Information Services at the Gdansk University of Technology Library and the Leader of the Open Science Competence Center. She is also a Plenipotentiary of the Rector of the Gdańsk University of Technology for open science. She is a PhD Candidate. Her main areas of research and interests include research productivity, motivation, management of HEs, Open Access, Open Research Data, information...
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Fire Weather Index data for Poland (March – September 2019) based on high-resolution Weather Research and Forecasting Model
Open Research DataThis dataset contains forecasted FWI indices calculated for the period: March 1 - September 30, 2019, based on the meteorological fields derived from the Weather Research and Forecasting Model (WRF) ver. 4.2.1. For each day FWI data with the forecast range equal 24 and 48 hour were stored in GeoTIFF files. In addition, soil moisture and temperature...
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The effect of different accelerators on the reclaiming efficiency of ground tire rubber
Open Research DataThe presented results concern the influence of different accelerators on the reclaiming efficiency of ground tire rubber (GTR). All the specimens were prepared using a two-roll mill and each sample was prepared in the same manner. Samples were submitted to curing analysis via Rheometer Monsanto 100S after 24 hours of aging. The attached data are related...
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Curing characteristics of ground tire rubber modified by commercial additives
Open Research DataThe presented results show the influence of commercially available bitumen and transoctenamer rubber (TOR) on the curing behavior of GTR treated by a peroxide. Samples were prepared using a two-roll mill– all in the same manner. After 24 hours of aging at ambient conditions, they were submitted to the curing analysis via Rheometer Monsanto 100S. The...
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Marek Moszyński dr hab. inż.
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Invasive Assessment of the Myocardial Microcirculation during Beating Heart Coronary Artery Bypass Grafting
PublicationCoronary artery bypass grafting may be associated with several cardiac complications, including ischemia, acute myocardial infarction, arrhythmias, or hemodynamic instability. Accumulating evidence suggests that well-developed coronary collateral circulation may protect against adverse effects, including myocardial ischemia. Assessment of myocardial microvascular perfusion is, therefore, of great clinical interest in beating heart...
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Improvement of Thrust Bearing Calculation Considering the Convectional Heating within the Space between the Pads
PublicationA modern thrust bearing tool is used to estimate the behavior of tilting pad thrust bearings not only in the oil film between pad and rotating collar, but also in the space between the pads. The oil flow in the space significantly influences the oil film inlet temperature and the heating of pad and collar. For that reason, it is necessary to define an oil mixing model for the space between the pads. In the bearing tool, the solutions...
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Metal dusting phenomena of 501 AISI furnace tubes in refinery fractional distillation unit
PublicationThe purpose of this investigation was to conduct the failure analysis of 501 AISI furnace tubes places before distillation column in fractional distillation unit. The investigated furnace tubes were planned to work for ten years however after just two years of exploitation <30% of the material left. The observed corrosion process had the intense and complex character. The well-adhered shiny black deposits and deep, round pits were...
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Numerical Simulation of Temperature Field in Steel under Action of Electron Beam Heating Source
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Technika PCR MP (PCR Melting Profile) - możliwości zastosowania w badaniach epidemiologicznych
PublicationUżyteczność PCR MP (ang. PCR Melting Profile), stosunkowo nowej techniki różnicowania genetycznego szczepów mikroorganizmów, pokazano na przykładach badań epidemiologicznych, dotyczących wykrywania zakażeń szpitalnych, analizy sytuacji epidemiologicznej i identyfikacji transmisji bakteryjnej u poszczególnych pacjentów. Technikę PCR MP charakteryzuje prostota, niskie koszty wykonania oraz potencjał różnicujący porównywalny do metody...
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Influence of H2S on degradation of 9Cr-1Mo steel in advanced stage of metal dusting process
PublicationPrzedstawiono wyniki badań stali 9Cr-1Mo w zaawansowanym stadium procesu pylenia metalu po 10 latach eksploatacji w piecu rafineryjnej instalacji platformingu CCR, przeprowadzonych w celu podjęcia decyzji o dozowaniu związków siarki do wsadu instalacji. Na podstawie długotrwałej ekspozycji próbek stali w 600C w mieszaninie wodoru i siarkowodoru wykazano, że siarka może być powodem procesów wpływających niekorzystnie na stan materiału...
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Silver Nanoparticles as Chlorhexidine and Metronidazole Drug Delivery Platforms: Their Potential Use in Treating Periodontitis
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Application of TOF-SIMS Method in the Study of Wetting the Iron (111) Surface with Promoter Oxides
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Selection and Setting of an Intelligent Fuzzy Regulator based on Nonlinear Model Simulations of a Helicopter in Hover
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PCR melting profile (PCR MP) - a new tool for differentiation of Candida albicans strains
PublicationPo raz pierwszy przedstawiliśmy użyteczność techniki PCR MP opartej na metodzie ligacji adaptorów (LM PCR) i obniżonej temperaturze denaturacji w cyklach PCR do wewnątrzgatunkowego różnicowania szczepów Candida albicans. Przebadaliśmy 123 szczepy Candida albicans z zastosowaniem trzech metod genotypowania: PCR MP, REA-PFGE i RAPD i uzyskaliśmy odpowiednio 27, 26 i 25 unikalnych genotypów. Zaprezentowane dane pokazały, że technika...
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[P3–515]: USERS’ SATISFACTION OF THE MEETING CENTRE SUPPORT PROGRAMME IN ITALY, POLAND AND THE U.K.
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Prevalence and distribution of left ventricular diastolic dysfunction in treated patients with long-lasting hypertension
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Setting-up a Blood Pressure and Vascular Protection Clinic: Requirements of the European Society of Hypertension
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Experimental investigation and process parameter optimization of sheet metal bending by line heating method
PublicationThe present study is concerned with the experimental investigation of sheet metal deforming by line heating method that incorporates the combined effect of traverse speed of the torch, thickness of the sheet metal, and the number of passes of the torch. For the numerical analysis of metal bending by line heating, the
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Effects of rapid heating on non-equilibrium microstructure evolution and strengthening mechanisms of titanium alloy
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Changes in wetting properties of silica surface treated with DPPC in the presence of phospholipase A2 enzyme
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Changes in wetting properties of alumina surface treated with DPPC in the presence of phospholipase A2 enzyme
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Effect of the Presence of the Lifting Pocket on The THD Performance of a Large Tilting-Pad Thrust Bearing
PublicationIn this paper, an attempt was taken to study the effect of the lifting pocket on THD performance of a large tilting-pad thrust bearing of Itaipu power plant. B3earing performance was evaluated including recess shape for several cases of its depth. The results show, that hydrostatic recess changes calculated bearing properties quite significantly, especially in the vicinity of the pocket
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Fabrication of Composite Polyurethane/Hydroxyapatite Scaffolds Using Solvent-Casting Salt Leaching Technique
PublicationScaffolds are porous three-dimensional structures which are used to fill bone losses and make them possible to cells to grow. Many different structural and biological properties are required from them: porosity, mechanical strength and biocompability. The present research is aimed at development of composite polyurethane/hydroxyapatite scaffolds by using the solvent-casting salt leaching method. The SEM examinations were applied...
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Wspomaganie pracy zdalnej w projektach UE - projekt Socrates Grundtvig ''Meeting of Generations''.
PublicationŚrodowisko BSCW (Basic Support for Cooperative Work) jest przykładem narzędzia służącego do zarządzania projektami w Internecie. Zalety takiego narzędzia są bardzo liczne, począwszy od magazynowania informacji aż do jej wykorzystania w różnym czasie i w różnych lokalizacjach posiadających dostęp do sieci Internet. Dzięki kontrolowanemu dostępowi do dokumentów (autoryzacja podczas logowania) system wspomaga zarządzanie wieloma...