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Search results for: Clemens and Gabriel Coelmer
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Epitaph of Clemens and Gabriel Coelmer in St. Mary's Church in Gdańsk
Open Research DataThe data set concerns epigraphy. It refers to the epitaph placed in St. Mary’s Church in Gdańsk which is dedicated to Clemens and Gabiel Coelmer, sons of a Gdańsk merchant; Clemens devoted himself to a clerical career in Gdańsk and became a councilor. The data set contains one general photo of the epitaph, transcription of its text in Latin, its Polish...
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O Gabrielu Narutowiczu - ponownie
PublicationPrzekazano informacje o działalności Gabriela Narutowicza jako profesora politechniki w Zurychu. Artykuł uzupełnia spostrzeżenia ukazane w Pismie PG nr 1/2005
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Cement composites with expanded graphite as resistance heating elements
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Epitaph of Gabriel Schumann and his son Gabriel in St. Mary's Church in Gdańsk
Open Research DataThe data set concerns epigraphy. It refers to the epitaph placed in St. Mary’s Church in Gdańsk, that is dedicated to Gabriel Schumann, a noble citizen of Gdańsk, who was a juror and finally councilor of Gdańsk, and his son Gabriel, who was not only juror and councilor, but also a city treasurer. Data set contains one general photo of the epitaph, transcription...
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ELEMENTS
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BIOLOGICAL TRACE ELEMENT RESEARCH
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FINITE ELEMENTS IN ANALYSIS AND DESIGN
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Propagation of elastic waves in structural elements by spectral finite element methods
PublicationW pracy przedstawiono metodę elementów spektralnych w zastosowaniu do analizy propagacji fal sprężystych w elementach konstrukcyjnych.
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Application of extended Finite Element Method to cracked concrete elements - numerical aspects
PublicationArtykuł omawia zastosowanie rozszerzonej metody elementów skończonych do zarysowanych elementów betonowych. Obliczenia wykonano dla elementów poddanych zginaniu i mieszanemu ściskaniu - rozciąganiu. Wyniki porównano z doświadczeniami.
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Analysis of ring cracks in ceramic rolling elements using the boundary element method
PublicationCeramic materials have been increasingly used in bearing technology for over a dozen years. This is due to the characteristic properties of ceramic materials such as: high hardness, corrosion resistance, the possibility of use in aggressive chemical environments, as well as due to the lower specific weight compared to steel materials. However, the use of ceramic materials is connected with many limitations. The main disadvantages...
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PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS
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Cement International
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Mobile Genetic Elements
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TRACE ELEMENTS AND ELECTROLYTES
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The effective elastic properties of human trabecular bone may be approximated using micro-finite element analyses of embedded volume elements.
PublicationBoundary conditions (BCs) and sample size affect the measured elastic properties of cancellous bone. Samples too small to be representative appear stiffer under kinematic uniform BCs (KUBCs) than under periodicity-compatible mixed uniform BCs (PMUBCs). To avoid those effects, we propose to determine the effective properties of trabecular bone using an embedded configuration. Cubic samples of various sizes (2.63, 5.29, 7.96, 10.58...
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Thermal Design of Double Pipe Heat Exchanger Used as an Oil Cooler in Ships: A Comparative Case Study
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The cement-bone bond is weaker than cement-cement bond in cement-in-cement revision arthroplasty. A comparative biomechanical study
PublicationThis study compares the strength of the native bone-cement bond and the old-new cement bond under cyclic loading, using third generation cementing technique, rasping and contamination of the surface of the old cement with biological tissue. The possible advantages of additional drilling of the cement surface is also taken into account. Femoral heads from 21 patients who underwent a total hip arthroplasty performed for hip arthritis...
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CEMENT & CONCRETE COMPOSITES
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CEMENT CONCRETE AND AGGREGATES
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Ariel-Revista de Filosofia
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Opinion about causes of framing of Kingston chest (box cooler) damage, on PSV vessel VS4411 DF-PSV (B-855)
PublicationThe subject of analysis is a damage of welded connection of box cooler framing segments, made as separate bars 50mm thickness, connected by the welds in corners. Studies of documents delivered by Customer shows cracks on the fusion of filet welds and twisting of box cooler frame. The subject of analysis is a damage of welded connection of box cooler framing segments, made as separate bars 50mm thickness, connected by the welds...
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Wizualizacja - element warsztatu współczesnego architekta = Visualization - element of modern architect's workshop
PublicationArtykuł dotyczy wizualizacji architektonicznej jako realistycznej prezentacji projektu za pomocą grafiki komputerowej. Został tu przedstawiony zakres problematyki, z którą styka się użytkownik programów komputerowych w kolejnych etapach tworzenia wirtualnego obrazu.
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CEMENT AND CONCRETE RESEARCH
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Trace Elements in Aquatic Environments
PublicationA trace element is defined as a chemical element whose the average concentration is less than 100 ppm (mg/kg, mg/L – in the case of a water matrix). In aquatic environments the concentrations of trace elements are usually at the level of picomoles per liter and lower. This causes extreme analytical problems, especially in situations where low content is in the range of background levels. Taking into account the role of trace elements...
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COMPARISON OF INFINITE ELEMENT MODELS
PublicationThe main objective of this paper is to show the comparison of two models of infinite ab- sorbing layer with increasing damping in numerical investigations of elastic wave prop- agation in unbounded structures. This has been achieved by the Authors by a careful in- vestigation of two different engineering structures characterised by gradually increasing geometrical and mathematical description complexities. The analysis included...
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Determination of Elements in Fruit Juices
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Al203 sealing elements lapping
PublicationPrzedstawiono wyniki badań własnych wydajnosci docierania ceramiki Al203. Badano elementy uszczelniające na docierarce jednotarczowej o standardowym układzie kinematycznym. Określono wpływ wielkości mikroziaren węglika boru o numerze F400/17, F800/6.5 i F1200/3 oraz wartości nominalnego nacisku jednostkowego na ubytek materiału w czasie 15 i 20 min. Scharakteryzowano mechanizm usuwania naddatku przy docieraniu elementów ceramicznych....
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ARIEL: A Review of International English Literature
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Cement kiln dust
PublicationThe volume of cement production in the world has remained at the level of approxi mately 4.1 billion tons/year. The cement production process is energy intensive and is the world’s leading emitter of carbon dioxide. Therefore, the main activities cement plants are aimed at introducing technologies changes in production of clinkier.The construction industry is responsible for the majority of CO2 emissions to the atmosphere: the...
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JOURNAL OF TRACE ELEMENTS IN EXPERIMENTAL MEDICINE
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GPU-accelerated finite element method
PublicationIn this paper the results of the acceleration of computations involved in analysing electromagnetic problems by means of the finite element method (FEM), obtained with graphics processors (GPU), are presented. A 4.7-fold acceleration was achieved thanks to the massive parallelization of the most time-consuming steps of FEM, namely finite-element matrix-generation and the solution of a sparse system of linear equations with the...
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Finite element matrix generation on a GPU
PublicationThis paper presents an efficient technique for fast generation of sparse systems of linear equations arising in computational electromagnetics in a finite element method using higher order elements. The proposed approach employs a graphics processing unit (GPU) for both numerical integration and matrix assembly. The performance results obtained on a test platform consisting of a Fermi GPU (1x Tesla C2075) and a CPU (2x twelve-core...
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Element sensor based on microplasma generators
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Wideband Macromodels in Finite Element Method
PublicationThis letter proposes a novel projection technique for accelerating Finite Element Method simulations. The algorithm is based on the Second-order Arnoldi Method for Passive Order Reduction (SAPOR). It involves generation of two projection bases and thanks to this it is applicable to the systems of equations, which contain the quadratic frequency-dependence in the input term, that arise when projection is applied locally in the selected...
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Concrete elements cast in febric forms
PublicationPrzedstawiono wyniki badań wytrzymałościowych elementów betonowych wylewanych w wiotkich formach wykonanych z materiałów syntetycznych. Badania przeprowadzono dla modelu ściany/słupa. Zbadano mechaniczne i chemiczne własności 10 różnych materiałów syntetycznych. Wybrano materiał o przepuszczalności umożliwiającej wykonanie monolitycznej konstrukcji. Z 12 zbadanych mieszanek betonowych do dalszej analizy wyselekcjonowano trzy. Badania...
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Non-destructive Testing of Wooden Elements
PublicationExamining the condition of wooden elements is crucial from the perspective of proper structure performance. If the deterioration in the internal wood condition, which displays no symptoms visible from the outside, is detected, the further spread of the deterioration can be prevented. Test results often point to the necessity of conducting repairs and, renovations, replacing the structure of wooden beams, or even substituting a...
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Werner Siemens i jego upamiętnienie
PublicationWerner Siemens żył w latach 1816-1892, w czasach niezwykłego postępu w naukach przyrodniczych i największych odkryć w zakresie elektrotechniki. Jako osoba z wykształceniem technicznym i niezwykłym zacięciem naukowym, przez całe życie łączył te dwie działalności. Jego prace naukowe służyły rozwojowi techniki, a wdrażane rozwiązania techniczne wymuszały tematy prowadzonych badań. Wykazał się też talentem jako przedsiębiorca. Założone...
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Influence of Cement Replacement with Sewage Sludge Ash (SSA) on the Heat of Hydration of Cement Mortar
PublicationThe amount of fly ash from the incineration of sewage sludge is increasing all over the world, and its utilization is becoming a serious environmental problem. In the study, a type of sewage sludge ash (SSA) collected directly from the municipal sewage treatment plant was used. Five levels of cement replacement (2.5%, 5%, 7.5%, 10% and 20%) and unchanged water-to-binder (w/b) ratio (0.55) were used. The purpose of the study was...
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Journal of Sustainable Cement-Based Materials
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Alms-panel of Anton Moeller in St. Mary's Church in Gdańsk
Open Research DataThe data set concerns epigraphy. It refers to the Alms-panel placed in St. Mary’s Church in Gdańsk, that is the work of Gdańsk painter Antoni Moller, made in 1607, or rather – to be more specific – to lower part of this work, which are the verses from Holy Bible. Data set contains one general photo of the inscription, transcription of its text in Latin...
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Attributes of Entrepreneurial Teams as Elements of a Mental Model
PublicationAn entrepreneurial team can be defined as a small group of individuals holding ownership or control positions who create or develop an entrepreneurial venture and have shared commitments towards each other. Entrepreneurial teams start numerous new ventures or affect the performance of firms due to their social capital based on some characteristic attributes. The mental models of teams refer to internal, organised representation...
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Macromodeling techniques for accelerated finite element analysis
PublicationThis paper deals with the Model Order Reduction applied locally in the Finite Element Method (FEM) analysis. Due to the reduction process, blocks of FEM system matrices associated with selected subregions of the computational domain are projected onto the subspaces spanned by the vectors of suited orthogonal projection basis. In effect, large and sparse FEM matrices are replaced with small and dense ones, called macromodels. This...
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Design Elements of Affect Aware Video Games
PublicationIn this paper issues of design and development process of affect-aware video games are presented. Several important design aspects of such games are pointed out. A concept of a middleware framework is proposed that separates the development of affect-aware video games from emotion recognition algorithms and support from input sensors. Finally, two prototype affect-aware video games are presented that conform to the presented architecture...
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Guided wave propagation in diagnostic of steel elements
PublicationThis paper is devoted to numerical investigations of elastic wave propagation in steel elements. The aim of this study is to conduct numerical analysis and experimental investigations on the propagation of elastic waves in steel elements in the context of damage detection. In particular, this paper is devoted to detection of damage occurring in the form of notch or changed thickness. This approach utilized the fact that any discontinuities...
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Guided wave propagation in diagnostic of steel elements
PublicationThis paper is devoted to numerical investigations of elastic wave propagation in steel elements. The aim of this study is to conduct numerical analysis and experimental investigations on the propagation of elastic waves in steel elements in the context of damage detection. In particular, this paper is devoted to detection of damage occurring in the form of notch or changed thickness. This approach utilized the fact that any discontinuities...
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Reduced-order models in the finite element analysis
PublicationA novel technique of incorporating macromodels into finite element electromagnetic analysis of waveguide components is presented. Macromodels are generated by using a model order reduction algorithm (ENOR), which results in significant decrease of the number of variables, that describe the computational region. Proposed technique allows for using a few independent macromodels as well as to duplicating one macromodel in many subregions...
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Fortyfikacje jako element zieleni miejskiej Gdańska
PublicationOmówienie zasobu wartości materialnych i niematerialnych krajobrazu historycznego Gdańska na obszarach związanych z kolejnymi systemami obronnymi miasta. Zaprezentowanie propozycji współczesnych działań w zakresie kompozycji zieleni uczytelniających zdezintegrowaną kompozycję przestrzenną historycznych systemów obronnych Gdańska.
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Platinum group elements: a challenge for environmental analytics
PublicationW pracy opisano problemy związane z analityką platynowców (Platinum Group Elements - PGE) w próbkach środowiskowych (kurz uliczny, materia zawieszona, gleba i osady denne, wody, ścieki, próbki biologiczne). Scharakteryzowano poszczególne etapy procedury analitycznej mogące być źródłem błędów oraz powodować szereg trudności. Opisano sposoby pobierania, przechowywania i utrwalania próbek przeznaczonych do badań. Przedstawiono również...
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Rare-earth elements in human colostrum milk
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Kształtowanie płynności jako element zarządzania przedsiębiorstwem
PublicationKształtowanie płynności w przedsiębiorstwie wymaga zarządzania kapitałem obrotowym, zgodnie z przyjętą strategią: agresywną, umiarkowaną lun konserwatywną. Zarządzając kapitałem obrotowym należy zarządzać środkami pieniężnymi, należnościami i zobowiązaniami oraz zapasami.