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Wyniki wyszukiwania dla: STRUGA UDERZAJĄCA, BUILDING-INTEGRATED PHOTOVOLTAIC/THERMAL (BIPV/T), ANALIZA NUMERYCZNA, DACHÓWKA FOTOWOLTAICZNA, CHŁODZENIE POWIETRZNE
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Thermal properties of lanthanide(III) complexes with 5-amino-1,3-benzenedicarboxylic acid
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Synthesis and thermal characterization of luminescent hybrid composites based on bisphenol A diacrylate and NVP
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Thermal stability and degradation of selected poly(alkyl methacrylates) used in the polymer industry
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Study of pozzolanic action of ground waste expanded perlite by means of thermal methods
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Thermal behavior of the products of 2-chloro-2-propen-1-ol oligomerization
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ANALIZA WŁAŚCIWOŚCI EMITERÓW IMPULSOWYCH POLA ELEKTROMAGNETYCZNEGO
PublikacjaW pracy przedstawiono analizę porównawczą wybranych emiterów pola elektromagnetycznego w oparciu o badania symulacyjne. Badane emitery różnią się kształtem i rozmiarem elementów składowych. Analiza dotyczy właściwości impulsów pola elektrycznego. Porównano właściwości kierunkowe, efektywności emisji oraz częstotliwości własne emiterów. Wskazano na najbardziej korzystną z punktu widzenia tych parametrów konstrukcję emitera.
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Characterization of structural, thermal and mechanical properties of bismuth silicate glasses
Publikacjahe influence of heating and reduction processes on the structural, thermal and mechanical properties of bismuth-silicate glasses has been investigated. Two compositions of glasses: 40Bi2O3–60SiO2 (Bi0.57Si0.43Ox) and 27Bi2O3–73SiO2 (Bi0.43Si0.57Ox) were fabricated by a typical melt quenching technique. Then the reduction in hydrogen at 380 °C for 20, 42 or 67 h was performed. It was found that a 50 μm-thick layer was formed on...
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Analiza technologii lutowania próżniowego stali austenitycznej
PublikacjaCelem badań była ocena poprawności budowy złącza lutowanego próżniowo ze stali austenitycznej oraz analiza składu chemicznego charakterystycznych obszarów badanej próbki. Na podstawie badań wizualnych oraz metalograficznych na mikroskopie skaningowym (w tym analizy EDS) stwierdzono, że badane złącze charakteryzuje się prawidłową geometrią, jednak występują w nim liczne niezgodności (wydzielenia), co świadczy o nieprawidłowych parametrach...
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Effects of Basalt and Carbon Fillers on Fire Hazard, Thermal, and Mechanical Properties of EPDM Rubber Composites
PublikacjaDue to growing restrictions on the use of halogenated flame retardant compounds, there is great research interest in the development of fillers that do not emit toxic compounds during thermal decomposition. Polymeric composite materials with reduced flammability are increasingly in demand. Here, we demonstrate that unmodified graphene and carbon nanotubes as well as basalt fibers or flakes can act as effective flame retardants...
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Low-Power Receivers for Wireless Capacitive Coupling Transmission in 3-D-Integrated Massively Parallel CMOS Imager
PublikacjaThe paper presents pixel receivers for massively parallel transmission of video signal between capacitive coupled integrated circuits (ICs). The receivers meet the key requirements for massively parallel transmission, namely low-power consumption below a single μW, small area of less than 205 μm2, high sensitivity better than 160 mV, and good immunity to crosstalk. The receivers were implemented and measured in a 3-D IC (two face-to-face...
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High temperature corrosion of evaporator tubes with thermal sprayed coatings
PublikacjaDegradation examinations of outer surface of low-emission steam boiler evaporator tubes are presented in the paper. Metallographic evaluation of scale morphology, its micro sites chemical composition analysis and distribution of elements on cross sections have been performed. Water-wall tubes were exposed in steam boiler for up to two years period. Common tubes made of 16Mo3 steel suffered sulphide and molten salts corrosions....
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Turbulence models impact on the flow and thermal analyses of jet impingement
PublikacjaAccurate numerical reconstruction of heat and mass transfer processes in particular applications, such a jet impingement, is difficult to obtain even with the use of modern computational methods. In the proposed paper, the flow and thermal phenomena occurring during single minijet impingement on the flat, concave and convex, heated surfaces were considered. Problem of impingement on non-flat surface, still not common and purely...
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Analiza wzmocnienia Mostu Pomorskiego w Bydgoszczy
PublikacjaTematem referatu jest analiza obecnie realizowanego projektu wzmocnienia mostu sprężonego. Most ten znajduje się w ciągu ul. Kardynała Stefana Wyszyńskiego nad rz. Brdą w Bydgoszczy. Jest to konstrukcja trójprzęsłowa, kablobetonowa z kablami sprężającymi biegnącymi po powierzchni płyty górnej konstrukcji. W pracy przedstawiono krótki rys historyczny obiektu, opisano konstrukcję mostu oraz podano wyniki i wnioski wynikające z realizowanego...
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Computer-aided analysis of thermal convection near electric devices
PublikacjaObciążalność długotrwała urządzeń elektrycznych zależy od intensywności oddawania ciepła przez te urządzenia do otoczenia. Dla zwiększenia obciążalności długotrwałej urządzeń stosuje się konwekcję wymuszoną np. z wykorzystaniem wentylatorów. Wszechstronne obserwacje i analiza procesów konwekcji naturalnej wskazują, że jej intensyfikację można uzyskać dzięki umieszczaniu w pobliżu urządzenia oddającego ciepło elementów tworzących...
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Fully bio-based poly(propylene succinate) synthesis and investigation of thermal degradation kinetics with released gases analysis
PublikacjaOne of the most important information about polyesters is their thermal stability and phase transition tem- peratures. These characteristics give information about the promising behavior of the polyester during proces- sing. In this work, linear bio-based polyester polyols were prepared with the use of succinic acid and 1.3- propanediol (both with natural origin). As a polycondensation catalyst was used tetraisopropyl orthotitanate...
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Measurements of Thermal Conductivity of LWC Cement Composites Using Simplified Laboratory Scale Method
PublikacjaThe implementation of low-energy construction includes aspects related to technological and material research regarding thermal insulation. New solutions are sought, firstly, to reduce heat losses and, secondly, to improve the environment conditions in isolated rooms. The effective heat resistance of insulating materials is inversely proportional to temperature and humidity. Cement composites filled with lightweight artificial...
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Thermal and Mechanical Behavior of Elastomers Incorporated with Thermoregulating Microcapsules
PublikacjaPolyurethane (PU) is one of the principal polymers in the global plastic market thanks to its versatility and continuous improvement. In this work, PU elastomeric materials having thermoregulating properties through the incorporation of microcapsules (mSD-(LDPE·EVA-RT27)) from low-density polyethylene and vinyl acetate containing paraffin®RT27 as PCM were produced. Elastomers were synthesized while varying the molar ratio [NCO]/[OH]...
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Ekonomiczna analiza upadłości przedsiębiorstw : ujęcie międzynarodowe.
PublikacjaMonografia przedstawia w sposób kompleksowy problemy dotyczące upadłości przedsiębiorstw. W książce ukazano m.in. takie zagadnienia jak: upadłość przedsiębiorstw w teorii nauk ekonomicznych; pozytywne i normatywne koncepcje uregulowań upadłości przedsiębiorstw; potencjalne źródła konfliktów, jakie mogą pojawić się pomiędzy interesariuszami postępowań upadłościowych; mierniki oceny efektywności systemów i postępowań upadłościowych;...
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Start-up of a power unit of a thermal power plant auxiliary systems with supply from a hydropower plant
PublikacjaThis article discusses the issues related to a power unit of a thermal power plant start-up with the use of a hydropower plant. Hydropower plant can supply and will enable start-up of auxiliary equipment in a power unit of a thermal power plant. Due to high capacity of auxiliary drives, start-up of auxiliaries in a thermal power plant after blackout (and boiler shutdown) is not possible from emergency energy sources in the power...
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An Integrated Approach to Management of Food Allergy – Recommendations for Consumers and Professionals
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Laser photoplethysmography in integrated evaluation of collateral circulation of lower extremities
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Hybrid Integrated Components For Optical Fiber Communication And Instrumentation Systems
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Modeling of a Combined Cycle Gas Turbine Integrated with an Adsorption Chiller
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Measuring the Integrated Effectiveness of Regional Development: Directions for Regional Government
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Integrated Quality Ensuring Technique of Plasma Wear Resistant Coatings
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Application of ecotoxicological studies in integrated environmental monitoring: possibilities and problems
PublikacjaPodstawowym celem badań stanu środowiska i procesów w nim zachodzących jest oszacowanie wpływu różnego typu zanieczyszczeń na organizmy żywe, w tym także na organizm człowieka. Jeszcze do niedawna do oceny ryzyka środowiskowego wykorzystywano wyniki uzyskane w trakcie badań analitycznych z wykorzystaniem typowych metod chemicznych i fizykochemicznych. Niestety, miały one charakter badań rutynowych i ograniczały się do oznaczania...
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Robust Estimation of Integrated Hydraulics and Parameters in Water Distribution Systems
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A Comparison of the Exergy Efficiencies of Various Heat-Integrated Distillation Columns
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Web-Based Integrated Timetable Information System for Railways and Airlines
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The value of independent investigations within integrated transport safety systems
PublikacjaThe importance of independent investigations into the causes of transport accidents is still underestimated in poland in the same way as the right of society to adequate information on safety. Meanwhile international experience shows that they can effectively improve safety by reducing the costs, enhancing the transfer of safety lessons between different modes of transport, facilitating the advancement of new and innovative investigation...
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Numerical analysis of vacuum drying of a porous body in the integrated domain
Publikacjan the present study, the vacuum drying process of an apple slice is numerically modeled based on a control volume method. Transient two-dimensional Navier– Stokes, energy, moisture, and Luikov equations are solved by numerical coding (Fortran) to simulate the simultaneous heat and mass transfer in the ambient and apple slice, respectively. The privilege of using Luikov's model is that the capillary forces are considered, and a...
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Building Smart Healthy Inclusive Environments for All Ages with Citizens
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Building federation of digital libraries basing on concept of atomic services
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Numerical Analysis of Flow in Building Arrangement: Computational Domain Discretization
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Challenges in Studying the Incorporation of Nanomaterials to Building Materials on Microbiological Models
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Evaluation of Temporal Leachability of Strontium from Building Materials to Environment
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Building ethics online course - australian and polish case study
PublikacjaPrzedstawiono koncepcje i metody tworzenia szkolenia internetowego przez zespół międzynarodowy. Zaprezentowano zawartość szkolenia i metody oceny uczestników. Dla zainteresowanych udostępniono szkolenie na stronach internetowych Centrum Edukacji Niestacjonarnej Politechniki Gdańskiej.
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Rural Building in Opole Silesia During the Period of the Frederician Colonization
PublikacjaThe aim of the article is to present the rural construction in the Opole countryside (Poland) during the “Frederician colonization”. Showing socio-economic areas of Opole villages, differing from each other, the differences of which resulted from the environmental conditions influencing the processes of enfranchisement and industrialization. These processes at the turn of the 17th and 19th centuries influenced the image of the...
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The method of strengthening the church building in terms of the planned mining exploitation
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GROUP COMPOSER - System for Modeling Agents’ Team Building for Tasks
PublikacjaMulti-agent systems consist of many autonomous units, called agents, that can interact when trying to achieve their goals. The selection of interaction partners is called team formation. Three basic approaches can be considered to match multi-agent system resources to the problem at hand. To research the properties of different approaches, a software for modeling team formation in multi-agent systems has been created and is presented...
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Building the Learning Environment for Sustainable Development: a Co-creation approach
PublikacjaEducation for sustainable development supports the improvement of knowledge, skills, attitudes and behaviors related to global challenges such as climate change, global warming and environmental degradation, among others. It is increasingly taking place through projects based on information and communication technologies. The effectiveness of the actions taken depends not only on the quality of the project activities or the...
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Organizational Forms and Management for the Building of Creative Capital of Older People
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Building Dedicated Project Management Process Basing on Historical Experience
PublikacjaProject Management Process used to manage IT project could be a key aspect of project success. Existing knowledge does not provide a method, which enables IT Organizations to choose Project Management methodology and processes, which would be adjusted to their unique needs. As a result, IT Organization use processes which are not tailored to their specific and do not meet their basic needs. This paper is an attempt to fill this...
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Influence of the local building tradition on Renaissance architecture in Royal Prussia
PublikacjaContrary to the southern Europe the first signs of Renaissance in northern parts of the Holy Roman Empire as well as in Poland and Lithuania might be observed only at the beginning of the 16th century. Initially, they were created by Italian teams which came from Florence, Rome and the region of Como. One of the most recognizable marks of that process was the transfer of the Italian craftsmen and architectural solutions, e.g....
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Visual Management as the support in building the concept of continuous improvement in the enterprise
PublikacjaThe following article presents one of the selected tools of the Lean Management concept – visual management. This method enables enterprises to strengthen their process of continuous improvement. Due to the support of visual management, it is possible to manage information more effectively by the managerial board and to improve communication process within in the particular company. In the first part, the author describes the concept...
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A new viscoelastic method of calculation of low-temperature thermal stresses in asphalt layers of pavements
PublikacjaThe paper presents a new method of calculation of thermal stresses in asphalt layers of pavements induced by cooling or heating. The method, developed by the author, is based on the analytical solution for the linear viscoelastic Burgers model extended numerically for the case of asphalt layers whose rheological parameters are strongly dependent on temperature. The coefficient of thermal expansion and Poisson’s ratio may optionally...
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Wstępna analiza zagrożenia podtopieniami w zlewni Potoku Strzyża w Gdańsku.
PublikacjaCharakterystyka sieci hydrograficznej Potoku Strzyża. Analiza zagrożenia podtopie - niami z wykorzystaniem hydraulicznego modelu potoku. Przedstawienie oraz analiza wyników obliczeń. Wstępne określenie odcinków newralgicznych z punktu widze - nia zagrożenia powodziowego. Wstępna analiza możliwych przyczyn występowania podtopień na terenie zlewni Potoku Strzyża.
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PROCESSING, MECHANICAL AND THERMAL PROPERTIES OF RECYCLED LOW-DENSITY POLYETHYLENE STREAMS
PublikacjaThe recycling of plastics is currently one of the most significant industrial challenges. Due to the enormous amounts of plastic wastes generated by various industry branches, it is essential to look for the potential methods of their utilization. Nevertheless, for the efficient application of recycled materials it is crucial to analyze their performance. Therefore, in presented paper we investigated the processing (melt flow index),...
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Design analysis of ORC micro-turbines making use of thermal energy of oceans
PublikacjaThe article presents the results of the analysis of energy conversion cycles making use of thermal energy of oceans. The objects of analysis were two cases of closed Organic Rankine Cycle (ORC) power plants, which were: the cycle in which the vapour of the working medium was produced by warm oceanic water in the circum-equatorial zone, and the so-called “arctic” cycle in which this vapour was produced by non-frozen water in the circumpolar...
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Phase change thermal energy storage – the experience of the materials preparation for the specific applications.
PublikacjaThermal energy storage and temperature stabilization is very important in many engineering applications. There are three kinds of thermal energy storage: sensible heat, latent heat and reversible chemical reaction heat. Phase change materials (PCM) absorb, store and release large amounts of energy in the form of latent heat, at constant temperature, called the transition temperature. Many innovative applications could be found...