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Wyniki wyszukiwania dla: morphological and structural features
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Practice Periodical on Structural Design and Construction
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International Journal of Advanced Structural Engineering
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International Journal of Materials and Structural Integrity
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SDHM Structural Durability and Health Monitoring
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Proceedings of International Structural Engineering and Construction
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Journal of Applied Structural Equation Modeling
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Structural Heart-The Journal of the Heart Team
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STRUCTURAL DESIGN OF TALL AND SPECIAL BUILDINGS
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Structural Equation Modeling: A Multidisciplinary Journal
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STRUCTURAL HEALTH MONITORING-AN INTERNATIONAL JOURNAL
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Effect of crystallinity on structural, thermal, and in vitro dissolution properties of Na2O-CaO-Nb2O5/MgO-P2O5 glass-ceramics
PublikacjaThe impact of the crystallinity on structural, thermal, and in vitro dissolution properties were examined for Na2O- CaO-Nb2O5/MgO-P2O5 glasses/glass-ceramics. Glass-ceramics were synthesized via a spontaneous crystallization process. The Nb content in the materials increased with melting temperature, furthermore, the crystallinity is proportional to the Nb content. The presence of crystalline niobates and phosphates is confirmed...
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Primary mediastinal B-cell lymphoma – metabolic and anatomical features in 18FDG-PET/CT and response to therapy
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Molecular profiles of thyroid cancer subtypes: Classification based on features of tissue revealed by mass spectrometry imaging
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Machine-Learning-Based Global Optimization of Microwave Passives with Variable-Fidelity EM Models and Response Features
PublikacjaMaximizing microwave passive component performance demands precise parameter tuning, particularly as modern circuits grow increasingly intricate. Yet, achieving this often requires a comprehensive approach due to their complex geometries and miniaturized structures. However, the computational burden of optimizing these components via full-wave electromagnetic (EM) simulations is substantial. EM analysis remains crucial for circuit...
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Low-Cost Quasi-Global Optimization of Expensive Electromagnetic Simulation Models by Inverse Surrogates and Response Features
PublikacjaConceptual design of contemporary high-frequency structures is typically followed by a careful tuning of their parameters, predominantly the geometry ones. The process aims at improving the relevant performance figures, and may be quite expensive. The reason is that conventional design methods, e.g., based on analytical or equivalent network models, often only yield rough initial designs. This is especially the case for miniaturized...
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Improving Accuracy of Respiratory Rate Estimation by Restoring High Resolution Features With Transformers and Recursive Convolutional Models
PublikacjaNon-contact evaluation of vital signs has been becoming increasingly important, especially in light of the COVID- 19 pandemic, which is causing the whole world to examine people’s interactions in public places at a scale never seen before. However, evaluating one’s vital signs can be a relatively complex procedure, which requires both time and physical contact between examiner and examinee. These re- quirements limit the number...
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Analyses of the effect of the design features of the spindle of the sliding table saw upon its critical rotational speeds
PublikacjaProducenci pilarek formatowych do drewna dążą do zwiększania dokładności przecinania. Można to osiągnąć np. przez poprawę zachowania się wrzeciona, gdyż od niego w dużej mierze zależą efekty przecinania. Przedstawiono metodykę wyznaczania prędkości krytycznych wrzeciona pilarki formatowej w funkcji cech konstrukcyjnych wrzeciona i jego napędu.
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Use of structural equation modeling in quantitative research in the field of management and economics: A bibliometric analysis in the systematic literature review
PublikacjaPURPOSE: This paper aims to provide a comprehensive review of scholarly research focusing on using quantitative methods and particularly structural equation modeling (SEM) in management and economics studies, as well as provide a bibliometric agenda including the time horizon of individual publications, the highest citation rate, geographic and industry areas, methodological context, and keywords. METHODOLOGY: A systematic literature...
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A facile structural manipulation strategy to prepare ultra-strong, super-tough, and thermally stable polylactide/nucleating agent composites
PublikacjaPolylactide (PLA) is a biodegradable thermoplastic widely used in diferent felds, but it should be adequately modifed considering high-performance applications. However, the current processes for developing PLA materials achieve high strength at the expense of toughness or ductility of the materials. Therefore, there is need to develop new strategies for generation of PLA materials with high strength, great toughness, good ductility,...
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Evaluation of structural and electrical properties of multicomponent spinel oxide thin films deposited via spray pyrolysis technique
PublikacjaThis work reports the preparation of (Mn,Co,Fe,Ni,Cr)3O4 high-entropy spinel oxide in the form of a ~ 500 nm thin film utilising a facile spray pyrolysis technique. The structural and electrical properties of the layers were characterised after exposure to temperatures in the range of 400–900 ◦C. The as-deposited layers were amorphous, and crystallised upon heat treatment at 500 ◦C. Microstructural analyses proved a homogeneous...
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Copper(II) complexes of 7-amino-2-methylchromone and 7-aminoflavone: Magneto-structural, spectroscopic and DFT characterization
PublikacjaFour new complexes of copper(II) consisting of two different chromone derivatives with carbonyl and amine donor atoms: 7-aminoflavone (L1) and 7-amino-2-methylchromone (L2), were synthesized and characterized by X-ray diffraction, UV–Vis, FT-IR, EPR spectroscopy, MS and elemental analysis. In all four compounds, the chromone derivatives were found to act as monodentate O- or N-ligands. The structural characteristics of 1a and...
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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 change in New Member States (1995-2005): shift-share analysis of productivity growth and its determinants
PublikacjaThe chapter focuses on the latest developments in ten New MemberStates (presented vis-à-vis EU-15countries), seen from the perspective of structural change and quality upgrading of their economic structures. In particular, recently released disaggregated labor statistics are used,allowing to analyse the process of labor reallocation and productivitychanges associated with inter-and intra-industrystructural change. Since the mid-1990s...
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GNSS-based multi-sensor system for structural monitoring applications
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Lanthanide metal–organic frameworks: Structural, thermal and sorption properties
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Effect of the various fats on the structural characteristics of the hard dough biscuit
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Structural Design and Sensitivity Analysis of Semi-Rigid Pavement of a Motorway
PublikacjaThis paper presents application of mechanistic-empirical methods in design of semi-rigid pavement for a section of a motorway in Poland. The stage construction was assumed. Three fatigue criteria were applied in the design. For asphalt fatigue cracking and subgrade soil the criteria from the Asphalt Institute (1981) were applied. For fatigue cracking of cement stabilized bases the Dempsey (1984) and De Beer (1992) criteria were...
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Structural Control of Photoinduced Dynamics in 4H-Imidazole- Ruthenium Dyes
PublikacjaThe photoinduced dynamics of a series ofterpyridine 4H-imidazole-ruthenium complexes, which constitutea new family of panchromatic dyes, is investigated. Thedynamics involves two excited states localized within the 4Himidazolesphere. Upon MLCT excitation, an excited state ispopulated, which is localized on the central part of the 4Himidazoleligand caused by its nonplanar conformation. Thepopulation of the second excited state is...
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Deformation of the Structural Details of the Components Created by the Rapid Prototyping Method
PublikacjaThe paper present the results of preliminary research and describes the deformation of construction details within the process of producing small element employing a stereography system. The article discuses a scheme for changes in data conversion. Variation in construction details have been described on the basis of analysing photographs.
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Structural ordering of laser-processed FePdCu thin alloy films
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The structural face of competition, cooperation and coopetition inside business networks
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Understanding chlorophylls: Central magnesium ion and phytyl as structural determinants
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Structural and thermal characteristics of Ni-doped carbosils prepared by mechanochemistry
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Structural organization of video informative systems on light-emitting diodes
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Structural Analysis of a Peptide Fragment of Transmembrane Transporter Protein Bilitranslocase
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Complex investigations of structural and thermal properties of silica-titania adsorbents
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Proceedings of the 9th International Conference on Structural Dynamics, EURODYN 2014
PublikacjaSince offshore wind turbine supporting structures are subjected to dynamic environments with time-varying loading conditions, it is important to model their dynamic behavior and validate these models by means of vibrational experiments. In this paper assessment of dynamical state of the structure is investigated by means of both: numerical modeling, and experimental modal analysis. In experimental modal analysis, capturing the...
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Structural Transformations in Agriculture in Poland and Ukraine: Towards Economic Sustainability
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Structural and Functional Analysis of Human HtrA3 Protease and Its Subdomains
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Biochemical and Structural Characterization of SplD Protease from Staphylococcus aureus
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Structural convergence among selected European countries. Multidimensional analysis.
PublikacjaArtykuł stanowi syntetyczną analizę dotyczącą konwergencji strukturalnej pomiędzy krajami Europy. W szczególnosci autorki skupiły się na analizie gospodarki Polski, Czech, Węgier Słowacji. W analizie wykorzystano techniki analiz wielowymiarowych.
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Structural design and sensitivity analysis of semi-rigid pavement of a motorway
PublikacjaThis paper presents application of mechanistic-empirical methods in design of semi-rigid pavement for a section of a motorway in Poland. The stage construction was assumed. Three fatigue criteria were applied in the design. For asphalt fatigue cracking and subgrade soil the criteria from the Asphalt Institute (USA) were applied. For fatigue cracking of cement stabilized bases the Dempsey (USA) and De Beer (South Africa) criteria...
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Shaking table experimental study on structural pounding during earthquakes
PublikacjaArtykuł przedstawia wyniki badań eksperymentalnych przeprowadzonych na stole wstrząsowym dotyczące zachowania się kolidujących ze sobą modeli konstrukcji podczas trzęsień ziemi. Wyniki te pokazują, iż zderzenia mogą prowadzić do znacznego wzrostu odpowiedzi konstrukcji, ale mogą mieć również pozytywny wpływ i częściowo wytłumić drgania. Ponadto, wyniki badań wskazują na istotny wpływ rodzaju materiału, z którego wykonane są elementy...
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Structural analysis of a wheeled tractor oriented towards damage diagnostics
PublikacjaThis study analyses the structure of a wheeled tractor whith the aim of evaluating the available options for diagnosing four types of defects affecting the vehicle's functions, exhaust gas emissions, engine performance and safety.
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Structural studies of bismuth nanocrystals embedded in SiO2 or GeO2 matrices.
PublikacjaW wyniku wygrzewania w atmosferze wodoru szkieł bizmutowych i germanowych otrzymano warstwę nanogranul bizmutu w otoczeniu amorficznej matrycy oraz powierzchniową warstwę bizmutowych granul. Grubość i struktura tak otrzymanych warstw silnie zależy od czasu i temperatury redukcji.
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Simulations of impact force spectrum for earthquake-induced structural pounding.
PublikacjaCelem artykułu jest analiza możliwości zastosowanie tzw. spektrum siły zderzenia przy projektowaniu sąsiadujących ze sobą konstrukcji budowlanych na terenach sejsmicznych, w przypadku zbyt małej przerwy dylatacyjnej między nimi. W artykule przedstawiono wyniki symulacji numerycznych przeprowadzonych dla różnych wartości parametrów dynamicznych konstrukcji.
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Assessment of structural changes in IN-519 cast steel reformer tubes.
PublikacjaPrzedstawiono zmiany struktury rur katalitycznych ze staliwa austenitycznego IN-519 po długotrwałej eksploatacji w reformerze metanu.
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Non-linear viscoelastic modelling of earthquake-induced structural pounding
PublikacjaCelem artykułu jest analiza nieliniowego lepko-sprężystego modelu siły zderzenia, który ma zastosowanie do symulacji zderzeń pomiędzy konstrukcjami budowlanymi podczas trzęsień ziemi. Efektywność modelu sprawdzono poprzez porównanie wyników symulacji numerycznych z wynikami eksperymentalnymi. Wyniki pracy pokazują, iż w stosunku do innych modeli zderzeń, nieliniowy model lepko-sprężysty umożliwia najdokładniejszą symulację siły...
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Selected Aspects of 3D Printing for Emergency Replacement of Structural Elements
PublikacjaThe paper presents a synthetic characterization of modern methods of manufacturing or regenerating machine elements. Considered methods are machining and additive methods, in particular 3D printing in the FDM/FFF technique. For the study, the authors made samples of the holder bracket using selected methods. Samples made by machining operations, 3D printing with various filling were tested. The paper contains a technical and economic...
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NUMERICAL MODEL OF PLASTIC DESTRUCTION OF THICK STEEL STRUCTURAL ELEMENTS
PublikacjaIn the shipbuilding industry, the risk of brittle fracture of the structure is limited by using certified materials with specified impact strength, determined by the Charpy method (for a given design temperature) and by supervising the welding processes (technology qualification, production supervision, non-destructive testing). For off-shore constructions, classical shipbuilding requirements may not be sufficient. Therefore, the...