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Wyniki wyszukiwania dla: STRUCTURAL DESIGN, CIVIL ENGINEERING, STRUCTURAL MECHANICS, STRUCTURAL RELIABILITY
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Mariusz Jaczewski dr inż.
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Seminar on Civil Engineering 2023/24
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A new integrated curriculum for computational methods in mechanics and design
PublikacjaPrzedstawiono program nowej specjalności na studiach inżynierskich: metody numeryczne w mechanice i projektowaniu, prowadzonej w języku angielskim.
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Engineering Graphics II, W/P, Design and Production engineering, sem. letni 2021/2022, (PG_00040167)
Kursy OnlineCourse for Engineering Graphics II classes of Design and Production engineering students
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Thermal performance of building envelopes with structural layers of the same density: Lightweight aggregate concrete versus foamed concrete
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The influence of transition metals (Fe, Co) on the structural, magnetic and optical properties of TiO2 nanoparticles synthesized by the hydrothermal method
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Investigation on structural, optical and anti-bacterial properties of organic additives iron oxide prepared by chemical route method
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Magnetic, Structural and Spectroscopic Properties of Iron(II)-Octacyanoniobate(IV) Crystalline Film Obtained by Ion-Exchange Synthesis
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Structural Change in New Member States (1995–2005): Shift–Share Analysis of Productivity Growth and its Determinants
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Epoxydibenzo[b,f][1,5]diazocines: From a Hidden Structural Motif to an Efficient Solvent-Free Synthetic Protocol
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Biomimetic zinc(II) and cobalt(II) complexes with tri-tert-butoxysilanethiolate and imidazole ligands - structural and spectroscopic studies.
PublikacjaNowe heteroleptyczne kompleksy tri-tert-butoksysilanotiolanowe Zn(II) i Co(II) z dodatkowymi ligandami imidazolowymi zostały scharakteryzowane strukturalnie i spektralnie. Otrzymano kompleksy o różnych centrach koordynacji w zależności od ligandów imidazolowych. Dla jonów Co(II)otrzymano kompleksy o rdzeniach: NOS2 (z cząsteczką metanolu jako O-donorowy ligand) w związku 2', NO2S2 w 2'', N2S2 w 1, zaś w przypadku jonów Zn(II):...
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Synthetic, Structural, and Spectroscopic Characterization of a Novel Family of High-Spin Iron(II) [(β-Diketiminate)(phosphanylphosphido)] Complexes
PublikacjaThis work describes a series of iron(II) phosphanylphosphido complexes. These compounds were obtained by reacting lithiated diphosphanes R2PP(SiMe3)Li (R = t-Bu, i-Pr) with an iron(II) β-diketiminate complex, [LFe(μ2-Cl)2Li(DME)2] (1), where DME = 1,2-dimethoxyethane and L = Dippnacnac (β-diketiminate). While the reaction of 1 with t-Bu2PP(SiMe3)Li yields [LFe(η1-Me3SiPPt- Bu2)] (2), that of 1 with equimolar amounts of i-Pr2PP(SiMe3)Li,...
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Two-step Conversion of Crude Glycerol Generated by Biodiesel Production into Biopolyols: Synthesis, Structural and Physical Chemical Characterization
PublikacjaIn this work biopolyols were synthesized via two-step process from crude glycerol and castor oil. For better evaluation of analyzed process, the impact of its time and temperature on the structure and properties of biopolyols was determined. Obtained results fully justified conducting of synthesis in two steps. Prepared materials were characterized by hydroxyl value and water content comparable to polyols industrially applied in...
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Evaluation of structural change during fast transformation process of cross-linked NR into liquid NR by light pyrolysis
PublikacjaThe presence of cross-linked networks in rubber creates a tremendous problem for recycling and reusing of waste rubber. Fast transformation of cross-linked natural rubber (NR) into liquid natural rubber was carried out by light pyrolysis in temperature range from 240 to 300 °C in variable time (in range: 1–30 min). The transformation efficiency was evaluated by measuring the sol fraction and the cross-link density of the gel fraction....
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Rozwój technologii nanokrystalizacji warstwy wierzchniej materiałów konstrukcyjnych = Development of nanocrystallization technologies of the surface layer of structural materials
PublikacjaPrzedstawiono szereg metod modyfikacji warstwy wierzchniej prowadzących do wytworzenia struktur nanokrystalicznych. Wskazano na zalety, wady i kierunki rozwoju poszczególnych metod
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Structural Changes and Their Implications in Foamed Flexible Polyurethane Composites Filled with Rapeseed Oil-Treated Ground Tire Rubber
PublikacjaThe utilization of post-consumer car tires is an essential issue from an ecological andeconomic point of view. One of the simplest and the least harmful methods is their material recyclingresulting in ground tire rubber (GTR), which can be further applied as fillers for polymer-basedcomposites. Nevertheless, insufficient interfacial interactions implicate the necessity of GTR modi-fication before introduction into polymer matrices....
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Mechanical and structural behavior of high-strength low-alloy steel pad welded by underwater wet welding conditions
PublikacjaThe aim of the paper was to determine the metallurgical and mechanical behaviors of a high-strength low-alloy (HSLA) steel pad-welded specimen used in the structures of industrial and naval parts. Then to predict the metallurgical consequences (nature of the phases present) and the mechanical properties (hardness and impact strength) of the pad-welded steel obtained by underwater wet welding with different heat input values. The...
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DEM analysis of micro-structural events within granular shear zones under passive earth pressure conditions
PublikacjaW artykule omówiono wyniki obliczeń numerycznych dla pasku dla stanu pasywnego sztywnej ścianki podczas jej translacji stosując metodę elementów dyskretnych. Analizowano głównie zjawiska mikrostrukturalne w strefach ścinania podczas translacji sztywnej ścianki. Szczególna uwagę zwrócono na pojawienie się wirów w materiale granulowanym.
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International Colloquium on Structural Information and Communication Complexity
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Angelika Duszyńska dr inż.
OsobyAbsolwentka kierunku Budownictwo Wodne Wydziału Hydrotechniki Politechniki Gdańskiej, doktor nauk technicznych w dziedzinie Geotechnika, nauczyciel akademicki (od 2020 roku pracuje na stanowisku profesora uczelni na wydziale Inżynierii Lądowej i Środowiska PG). Prowadzi zajęcia z przedmiotów: Geoinżynieria, Geotechnika, Budowle Ziemne i Wzmacnianie podłoża, Geosyntetyki w Budownictwie, Budowle Hydrotechniczne. Od ponad 20 lat...
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Aleksandra Parteka dr hab. inż.
OsobyAbout 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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Mechanics and Mechanical Engineering
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On Improved-Reliability Design Optimization of High-Frequency Structures Using Local Search Algorithms
PublikacjaThe role of numerical optimization has been continuously growing in the design of high-frequency structures, including microwave and antenna components. At the same time, accurate evaluation of electrical characteristics necessitates full-wave electromagnetic (EM) analysis, which is CPU intensive, especially for complex systems. As rigorous optimization routines involve repetitive EM simulations, the associated cost may be significant....
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Virtual Engineering Object (VEO): Toward Experience-Based Design and Manufacturing for Industry 4.0
PublikacjaIn this article we propose the concept, its framework, and implementation methodology for Virtual Engineering Objects (VEO). A VEO is the knowledge representation of an engineering object that embodies its associated knowledge and experience. A VEO is capable of adding, storing, improving, and sharing knowledge through experience. Moreover, it is demonstrated that VEO is a specialization of a Cyber-Physical System (CPS). In this...
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Open source learning management systems at civil engineering and environmental department: TeleCAD and Moodle.
PublikacjaW rozdziale zaprezentowano dwa systemy zarządzania kształceniem, służące do przygotowania i prowadzenia e-kursów. Pierwszy z nich TeleCAD został opracowany w ramach projektu Leonardo da Vinci (1998-2001). Ostanie użycie systemu miało miejsce w roku akademickim 2003/2004 i był on wykorzystany w projekcie CURE (V Program Ramowy, 2003-2006). W roku 2003 dzięki wsparciu projektu Leonardo da Vinci EMDEL (2001-2005) Centrum Edukacji...
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Indicators of recent geodynamic activity in the Książ Castle area (Świebodzice Unit, Sudetes) in the light of structural analysis and geodetic measurements
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An investigation of structural responses of inverted pavements by numerical approaches considering nonlinear stress-dependent properties of unbound aggregate layer
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The LD loop as an important structural element required for transmission of the allosteric signal in the HtrA (DegP) protease from Escherichia coli
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Advanced Experimental and Numerical Analysis of Behavior Structural Materials Including Dynamic Conditions of Fracture for Needs of Designing Protective Structures
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Structural Analysis and Dynamic Processes of the Transmembrane Segment Inside Different Micellar Environments—Implications for the TM4 Fragment of the Bilitranslocase Protein
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Lipidated Analogs of the LL-37-Derived Peptide Fragment KR12—Structural Analysis, Surface-Active Properties and Antimicrobial Activity
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Structural, thermal and energetic characteristics of synthetic active carbons prepared on the basis of ion-exchange resin Amberlite IRC 84
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Experimental and first-principles studies of high-pressure effects on the structural, electronic, and optical properties of semiconductors and lanthanide doped solids
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Historic bridge modelling using laser scanning, ground penetrating radar and finite element methods in the context of structural dynamics
PublikacjaPraca dotyczy modelowania MES zabytkowej konstrukcji mostowej przy użyciu danych geometrycznych pochodzących ze skanowania laserowego oraz georadaru. Z uwagi na brak badań materiału budujcego most, przeprowadza się analize wrażliwości konstrukcji na zmiany modułu sprężystości granitu.
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The evaluation methodology of corrosion protection of tanks from hull structural steels with Acoustic Emission use and first results of investigations
PublikacjaW referacie przedstawiono metodykę badań mającą na celu ocenę stopnia ochrony przed korozją konstrukcji zbiorników ładunkowych i balastowych wykonanych ze stali kadłubowych z wykorzystaniem Emisji Akustycznej (EA). W metodyce wykorzystano wymagania obowiązujących norm, standardów oraz doświadczenia zdobyte w dotychczasowych badaniach poświęconych zastosowaniu metody EA do wykrywania i lokalizacji źródeł korozji na statkach. Do...
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Study of structural and optical properties of tio2:tb thin films prepared by high energy reactive magnetron sputtering method
Publikacjaw pracy zaprezentowano wyniki badań optycznych i strukturalnych cienkich warstw na bazie domieszkowanego tlenku tytanu. warstwy tlenkowe wytworzono zmodyfikowaną metodą rozpylania magnetronowego z targetu mozaikowego w atmosferze tlenu. badania strukturalne wykazały nanokrystaliczność badanych warstw.
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Structural analysis and physico-chemical characterization of mononuclear manganese(II) and polynuclear copper(II) complexes with pyridine-based alcohol
PublikacjaTwo novel manganese(II) and copper(II) complexes, mononuclear [Mn(H2O)2(2-(CH2)2OHpy)2](NO3)2 (1) and polynuclear [Cu(SO4)(2-(CH2)2OHpy)2]n (2), based on 2-(hydroxyethyl)pyridine (2-(CH2)2OHpy) were synthesised and fully characterised using X-ray structure analysis as well as spectroscopic, magnetic and thermal methods. Both central metal ions Mn(1) and Cu(1) are coordinated by two N,O-donor 2-(CH2)2OHpy ligands and possess an...
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Structural and physico-mechanical properties of natural rubber/GTR composites devulcanized by microwaves: Influence of GTR source and irradiation time
PublikacjaGround tire rubber from car and truck was modified using microwave irradiation at variable time. The irradiated ground tire rubber was used as filler in composites based on natural rubber. The composites, with high content of ground tire rubber, were prepared using an internal batch mixer and subsequently cross-linked at 160℃. The influence of the ground tire rubber source (car/truck) and irradiation time on structure, physico-mechanical...
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Structural, thermal and physico-mechanical properties of polyurethane/brewers’ spent grain composite foams modified with ground tire rubber
PublikacjaIn this work, brewers’ spent grain (BSG) and ground tire rubber (GTR) waste fillers were applied as low-cost reinforcement phase in rigid polyurethane foam (PUR). PUR/BSG/GTR composites were prepared by a single step method, using polyglycerol as partial substitute of commercially available petrochemical polyols. Foaming parameters, chemical structure, dynamic mechanical properties, thermal stability, physico-mechanical properties...
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Structural, spectral and magnetic properties of Ni(II), Co(II) and Cd(II) compounds with imidazole derivatives and silanethiolate ligands
PublikacjaA series of new metal heteroleptic complexes have been obtained in simple reactions of 1-(3-aminopropyl)-imidazole (api) and 1,4-bis(imidazol-1-yl)-butane (bbi) ligands with metal silanethiolates or acetylacetonates. The obtained complexes are the coordination polymers [Ni{SSi(tBuO)3}2(μ-api)]n1, [Co{SSi(tBuO)3}2(μ-api)]n2, [Cd{SSi(tBuO)3}2(μ-api)·2CH3OH]n3, [Cd{SSi(tBuO)3}2(μ-bbi)·CHCl3]n4 and the dimer [Co{SSi(tBuO)3}2(μ-bbi)·3CH3OH]25....
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Wpływ starzenia stali budowlanej na jej właściwości mechaniczne. The effect of structural steel aging on its mechanical properties
PublikacjaPrzedstawiono wyniki badań właściwości mechanicznych i struktury trzech elementów stalowej konstrukcji budowlanej po długotrwałej eksploatacji.
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Structural and Material Determinants Influencing the Behavior of Porous Ti and Its Alloys Made by Additive Manufacturing Techniques for Biomedical Applications
PublikacjaOne of the biggest challenges in tissue engineering is the manufacturing of porous structures that are customized in size and shape and that mimic natural bone structure. Additive manufacturing is known as a sufficient method to produce 3D porous structures used as bone substitutes in large segmental bone defects. The literature indicates that the mechanical and biological properties of scaffolds highly depend on geometrical features...
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Structural, electrical, and magnetic study of La-, Eu-, and Er- doped bismuth ferrite nanomaterials obtained by solution combustion synthesis
PublikacjaIn this work, the multiferroic bismuth ferrite materials Bi0.9RE0.1FeO3 doped by rare-earth (RE = La, Eu, and Er) elements were obtained by the solution combustion synthesis. Structure, electrical, and magnetic properties of prepared samples were investigated by X-ray photoelectron spectroscopy, Mössbauer spectroscopy, electrical hysteresis measurement, broadband dielectric spectroscopy, and SQUID magnetometry. All obtained nanomaterials...
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Incremental dynamic analysis and fragility assessment of buildings founded on different soil types experiencing structural pounding during earthquakes
PublikacjaThe effect of the soil type on buildings experiencing pounding during earthquakes is investigated in this study using the incremental dynamic analysis and fragility assessment methods. Three 3-D structures with different number of storeys (4, 6 and 8) were considered in this study. Three pounding scenarios between these three buildings were taken into account, i.e. pounding between 4-storey and 6-storey buildings, between 4-storey...
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Design thinking qualifications framework – standardizing the innovative approach to entrepreneurial education delivery to engineering students
PublikacjaHighly competitive labor market stimulates increasing expectations towards fresh university alumni. It is not enough to be an expert - well educated and often experienced - in chosen discipline. High variability of the business environment, continuous change, number of risks, together with higher work demand than supply, shape clear employers’ expectations: entrepreneurial employees are wanted. On this ground a need for entrepreneurial...
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BMC STRUCTURAL BIOLOGY
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STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION
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The use of response surface methodology for reliability estimation of composite engineering structures
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The use of Response Surface Methodology for reliability estimation of composite engineering structures
PublikacjaStability loss is one of the key issues in the analysis of shells made of composite materials. This paper aims at finding the variation of the critical or limit value of the load resulting from geometric imperfections. An axially compressed 16-layer cylindrical panel model is considered. The imperfections of the panel are simulated as random fields. The parameters of these fields are used as the basic variables of the reliability...
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Diagnostics of civil engineering structures with use of continuous fiber optic sensors based on Brillouin scattering
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