Search results for: 3d - Bridge of Knowledge

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Search results for: 3d

Search results for: 3d

  • Arabinoxylans: A review on protocols for their recovery, functionalities and roles in food formulations

    Publication
    • F. J. Hernández-Pinto
    • J. D. Miranda-Medina
    • A. Natera-Maldonado
    • Ó. Vara-Aldama
    • M. P. Ortueta-Cabranes
    • J. A. Vázquez del Mercado-Pardiño
    • S. A. El-Aidie
    • S. A. Siddiqui
    • R. Castro Munoz

    - INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES - Year 2024

    Arabinoxylans (AXs) are compounds with high nutritional value and applicability, including prebiotics or supplementary ingredients, in food manufacturing industries. Unfortunately, the recovery of AXs may require advanced separation and integrated strategies. Here, an analysis of the emerging techniques to extract AXs from cereals and their by-products is discussed. This review covers distinct methods implemented over the last...

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  • UAV Design and Construction for Real Time Photogrammetry and Visual Navigation

    Publication

    - Year 2018

    A unmanned aerial vehicles applications in photogrammetry have increased rapidly last years. A fast data gathering and processing in real time in some cases become crucial and desired in some application. In the paper, a real time solution is proposed. A real time photogrammetry from UAV is proposed, where image data are gathered and processed on board UAV and finally reconstructed 3D model and measurements are delivered. The paper...

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  • Application of the Optimum Dataset Method in Archeological Studies on Barrows

    Publication

    - Year 2018

    Light Detection and Ranging (LiDAR) became one of the technologies used in archaeological research. It allows for relatively easy detection of archaeological sites that have their own field form, e.g.: barrows, fortresses, tracts, ancient fields [1]. As a result of the scanning, the so-called point cloud is obtained, often consisting of millions of points. Such large measurement datasets are very time-consuming and labor-intensive...

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  • Featured based CAVE software factory

    Publication

    In the paper we convey the lessons learned along the path we have gone through several years since establishing a room-sized CAVE installation at our university, from craft manufacturing and ad-hoc software reuse of VR software products to the robust feature driven software product line (SPL) implementing the Product Line Engineering (PLE) factory paradigm. With that we can serve all our departments and other entities from the...

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  • Application of linear buckling sensitivity analysis to economic design of cylindrical steel silos composed of corrugated sheets and columns

    The paper deals with global stability of steel cylindrical silos composed of corrugated walls and vertical columns with loads imposed by a bulk solid following Eurocode 1. The optimum silo design with respect to the steel weight was based on a sensitivity analysis method. The changes of silo column profiles at each design step were performed by means of influence lines for the buckling load factor due to the unit column bending...

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  • Geometria wykreślna I, 2019/20

    e-Learning Courses
    • J. M. Kowalewska
    • M. Malewczyk
    • D. Cyparski
    • A. Wancław

    Kurs „Geometria wykreślna I” łączy w sobie elementy kształcenia tradycyjnego z e-nauczaniem. Przeznaczony jest dla studentów kierunku Architektura, sem. 1, studia inżynierskie I stopnia. Tematyka dotyczy graficznej prezentacji obiektów 3D na płaszczyźnie, ich restytucji na podstawie rzutów oraz rozwiązywania prostych problemów przestrzennych. Treść nauczania obejmuje założenia metody rzutów prostokątnych na dwie rzutnie (metoda...

  • Technologie multimedialne - 2023

    e-Learning Courses
    • P. Odya
    • J. Kotus
    • S. Zaporowski
    • P. Sokołowski
    • P. Szczuko
    • W. Ludwikowska
    • G. Szwoch
    • A. Harasimiuk
    • B. Mróz

    Kurs ma za zadanie zapoznać studentów z podstawami szeroko pojętych technologii multimedialnych, z którymi spotykają się praktycznie na każdym kroku. Studenci poznają perceptualne podstawami kompresji dźwięku oraz obrazu ruchomego i nieruchomego. Uczą się tworzyć i zarządzać stronami www. Wśród poruszanych zagadnień znajdują się także interfejsy multimodalne oraz podstawy tworzenia grafiki 2D i 3D. Poruszane są również elementy...

  • Technologie multimedialne - 2022

    e-Learning Courses
    • P. Odya
    • J. Kotus
    • S. Zaporowski
    • P. Sokołowski
    • P. Szczuko
    • W. Ludwikowska
    • G. Szwoch
    • K. Marciniuk
    • B. Mróz
    • M. Lech
    • P. Spaleniak

    Kurs ma za zadanie zapoznać studentów z podstawami szeroko pojętych technologii multimedialnych, z którymi spotykają się praktycznie na każdym kroku. Studenci poznają perceptualne podstawami kompresji dźwięku oraz obrazu ruchomego i nieruchomego. Uczą się tworzyć i zarządzać stronami www. Wśród poruszanych zagadnień znajdują się także interfejsy multimodalne oraz podstawy tworzenia grafiki 2D i 3D. Poruszane są również elementy...

  • Projektowanie Architektoniczne Sem. I. SAOZ 2023/2024

    e-Learning Courses
    • K. Taraszkiewicz
    • A. Malinowska
    • J. Gorzka

    Pierwszy semestr zajęć jest wprowadzeniem do projektowania architektonicznego i ma na celu rozwinięcie umiejętności abstrakcyjnego myślenia. Studenci zapoznają się z różnymi technikami ekspresji przestrzennej, zachęcani są do eksperymentowania z różnymi sposobami tworzenia przestrzeni oraz jej własnej interpretacji. Studenci nabywają umiejętności tworzenia abstrakcyjnych kompozycji płaskich (2D) i przestrzennych (3D) ilustrujących...

  • Technologie multimedialne - 2024

    e-Learning Courses
    • P. Odya
    • J. Kotus
    • S. Zaporowski
    • P. Sokołowski
    • P. Szczuko
    • W. Ludwikowska
    • G. Szwoch
    • A. Harasimiuk
    • K. Marciniuk
    • B. Mróz

    Kurs ma za zadanie zapoznać studentów z podstawami szeroko pojętych technologii multimedialnych, z którymi spotykają się praktycznie na każdym kroku. Studenci poznają perceptualne podstawami kompresji dźwięku oraz obrazu ruchomego i nieruchomego. Uczą się tworzyć i zarządzać stronami www. Wśród poruszanych zagadnień znajdują się także interfejsy multimodalne oraz podstawy tworzenia grafiki 2D i 3D. Poruszane są również elementy...

  • Projektowanie Architektoniczne sem. I_2024/2025_SAiKN

    e-Learning Courses
    • K. Taraszkiewicz
    • J. Gorzka

    Pierwszy semestr zajęć jest wprowadzeniem do projektowania architektonicznego i ma na celu rozwinięcie umiejętności abstrakcyjnego myślenia. Studentki i Studenci zapoznają się z różnymi technikami ekspresji przestrzennej, zachęcani są do eksperymentowania z różnymi sposobami tworzenia przestrzeni oraz jej własnej interpretacji. Nabywają też umiejętności tworzenia abstrakcyjnych kompozycji płaskich (2D) i przestrzennych (3D) ilustrujących...

  • Theory of Organisation and Management and System's Theory

    e-Learning Courses
    • E. Wojnicka-Sycz

    We will have our lectures and classes in Theory of Organisation and Management and System's Theory on Wednesday Since 9:15 till 12:00. We will meet on MsTeams and here is the link: https://teams.microsoft.com/dl/launcher/launcher.html?url=%2F_%23%2Fl%2Fmeetup-join%2F19%3Ameeting_MTBjMTg4ZWYtY2Q2NS00YjlkLWFmZTItMWUzYTcwM2ZmNzU0%40thread.v2%2F0%3Fcontext%3D%257b%2522Tid%2522%253a%2522b2b950ec-1ee3-4d9d-ac5e-4dd9db5e0b73%2522%252c%2522Oid%2522%253a%252233f97504-8676-4b87-96ad-a9394d16b3b2%2522%257d%26anon%3Dtrue&type=meetup-join&deeplinkId=ce188d79-726a-418e-ab34-eb9f59172f62&directDl=true&msLaunch=true&enableMobilePage=true&suppressPrompt=true  

  • Ekonomika Miast i Regionów

    e-Learning Courses
    • E. Wojnicka-Sycz

    Zajęcia z Ekonomiki miast i regionów (z dr hab. Elżbietą Wojnicką-Sycz) odbywają się w  poniedziałki w godzinach  14:00-15:30 na MsTeams pod linkiem:   https://teams.microsoft.com/dl/launcher/launcher.html?url=%2F_%23%2Fl%2Fmeetup-join%2F19%3Ameeting_Njc3NDczZWEtZmIzYS00ODlkLThhZmYtOTgwN2MzNjRkYWQw%40thread.v2%2F0%3Fcontext%3D%257b%2522Tid%2522%253a%2522b2b950ec-1ee3-4d9d-ac5e-4dd9db5e0b73%2522%252c%2522Oid%2522%253a%252233f97504-8676-4b87-96ad-a9394d16b3b2%2522%257d%26anon%3Dtrue&type=meetup-join&deeplinkId=7ecdaf99-fe15-404f-b1c0-4a4d619bc9e7&directDl=true&msLaunch=true&enableMobilePage=true&suppressPrompt=true

  • Shear band evolution phenomena in direct shear test modelled with DEM.

    Publication

    A direct shear test is widely used in the geotechnical engineering field. It is an easy and quick test to measure the shear properties of soil. This test often replaces more expensive and difficult tri-axial shear test. Despite that the direct shear test is known and used for a long time, it is still not well investigated at the grain scale. This paper deals with the micro behaviour of the cohesionless sand inside the direct shear...

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  • Comparison of different one-parameter damage laws and local stress-strain approaches in multiaxial fatigue life assessment of notched components

    Publication
    • R. Branco
    • J. D. Costa
    • L. Borrego
    • F. Berto
    • S. M. N. Razavi
    • W. Macek

    - INTERNATIONAL JOURNAL OF FATIGUE - Year 2021

    This paper aims to compare the predictive capabilities of different one-parameter damage laws and local stress-strain approaches to assess the fatigue lifetime in notched components subjected to proportional bending-torsion loading. The tested fatigue damage parameters are defined using well-known stress-based, strain-based, SWT-based and energy-based relationships. Multiaxial cyclic plasticity at the notch-controlled process zone...

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  • Badania obszarów zagrożonych zniszczeniem w biomateriałach koron stomatologicznych

    Do analizy obszarów zagrożonych zniszczeniem w biomateriałach koron stomatologicznych zastosowano analizę strukturalną elementów skończonych MES. Opracowano dwu wymiarowy model korony stomatologicznej zamocowanej na kikucie zęba, w którym określono obszary występowania poszczególnych materiałów. Przyjęte do obliczeń numerycznych wartości modułu Younga i współczynniki Poissona odniesiono do rzeczywistych biomateriałów korony stomatologicznej....

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  • Usuwanie odblasków linii laserowej

    W nowoczesnych zrobotyzowanych systemach produkcyjnych coraz częściej stosuje się różnego rodzaju czujniki montowane na ramieniu robota, umożliwiające automatyczne rozpoznawanie położenia i kształtu obiektów znajdujących się w polu roboczym. Pozwala to na adaptacyjne dostosowywanie procesu technologicznego do zaistniałej sytuacji. Wyposażając robota w kamerę oraz linijkę laserową możliwe jest stworzenie zrobotyzowanego skanera...

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  • Demagnetyzacja składowej podłużnej otwartego układu ferromagnetycznego.

    Publication

    Obiekt ferromagnetyczny znajdujący się w ziemskim polu magnetycznym zaburza w swoim otoczeniu równomierność pola. Zaburzenie to związane jest z namagnesowaniem stałym i indukowanym obiektu ferromagnetycznego. W pracy przedstawiono wyniki badań symulacyjnych dotyczące możliwości demagnetyzacji obiektu w jego osi podłużnej pokrywającej się z największym wymiarem obiektu. Przedstawiono opis niezbędnych założeń dotyczących problemu,...

  • Shipping Low Frequency Noise and Its Propagation in Shallow Water

    One of the most significant factor influencing acoustical climate of the sea is underwater noise generated by moving ships. If the considered sea area has features of the shallow water, namely the wave frequency fulfils relation f < 10c/h, where c denotes phase speed of sound, and h is depths of the sea, then in certain distance from the wave source specific image of sound pressure distribution in the mean of wave modes appears....

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  • Chitosan pyrolysis in the presence of a ZnCl2/NaCl salts for carbons with electrocatalytic activity in oxygen reduction reaction in alkaline solutions

    Publication

    - Scientific Reports - Year 2024

    The one-step carbonization of low cost and abundant chitosan biopolymer in the presence of salt eutectics ­ZnCl2/NaCl results in nitrogen-doped carbon nanostructures (8.5 wt.% total nitrogen content). NaCl yields the spacious 3D structure, which allows external oxygen to easily reach the active sites for the oxygen reduction reaction (ORR) distinguished by their high onset potential and the maximum turnover frequency of 0.132 e...

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  • Poloxamer: A versatile tri-block copolymer for biomedical applications

    Publication
    • P. Zarrintaj
    • J. D. Ramsey
    • A. Samadi
    • Z. Atoufi
    • M. K. Yazdi
    • M. Ganjali
    • L. M. Amirabad
    • E. Zangene
    • M. Farokhi
    • K. Formela... and 3 others

    - Acta Biomaterialia - Year 2020

    Poloxamers, also called Pluronic, belong to a unique class of synthetic tri-block copolymers containing central hydrophobic chains of poly(propylene oxide) sandwiched between two hydrophilic chains of poly(ethylene oxide). Some chemical characteristics of poloxamers such as temperature-dependent self-assembly and thermo-reversible behavior along with biocompatibility and physiochemical properties make poloxamer-based biomaterials...

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  • Two- and three-dimensional elastic networks with rigid junctions: modeling within the theory of micropolar shells and solids

    Publication

    - ACTA MECHANICA - Year 2019

    For two- and three-dimensional elastic structures made of families of flexible elastic fibers undergoing finite deformations, we propose homogenized models within the micropolar elasticity. Here we restrict ourselves to networks with rigid connections between fibers. In other words, we assume that the fibers keep their orthogonality during deformation. Starting from a fiber as the basic structured element modeled by the Cosserat...

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  • Induced-fit binding of laccase to gold and carbon electrodes for the biological fuel cell applications

    Publication
    • M. Karaskiewicz
    • D. Majdecka
    • A. Wieckowska
    • J. Biernat
    • J. Rogalski
    • R. Bilewicz

    - ELECTROCHIMICA ACTA - Year 2014

    Analogues of laccase natural substrates (syringic, veratric, ferulic, vanillic, isovanillic, 3,5-dimethoxybenzoic aldehydes) were employed to bind and orient laccase molecules in a way which facilitates adsorption of the catalyst molecules and their electrical connection with the conductive support. Laccase was bound efficiently to these substrates both on gold and carbon electrodes forming, respectively, 2D and 3D films sensitive...

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  • In vitro antioxidative and binding properties of phenolics in traditional, citrus and exotic fruits

    Publication
    • Y. Park
    • M. Cvikrová
    • O. Martincová
    • K. Ham
    • S. Kang
    • Y. Park
    • J. Namieśnik
    • A. Rombolà
    • Z. Jastrzebski
    • S. Gorinstein

    - FOOD RESEARCH INTERNATIONAL - Year 2015

    Many polyphenols bind proteins, therefore our research was focused on the potential of protein binding to polyphenols of investigated fruits and their health-related effects. The contents of polyphenols and related antioxidant activities of traditional, citrus and exotic fruits were compared. The presence of polyphenols (flavonoids and phenolic acids) in the investigated samples and their interaction with human serum albumin (HSA)...

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  • Coordination polymers and molecular structures among complexes of mercury(II) halides with selected 1-benzoylthioureas

    Six new 1-benzoyl-3-phenylthiourea and 1-benzoyl-3-(2-methylphenyl)thiourea complexes of mercury( II) were obtained in the reactions of the ligands with HgX2 in methanol (X = Cl, Br, I). Their structures, determined by single-crystal X-ray diffraction analysis, exhibit different stoichiometries and molecular organization. Coordination centers adopt more or less distorted tetrahedral geometry (five structures) or distorted trigonal...

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  • Introduction to the RSC Advances themed collection on nano and microscale modifications of biomaterials

    Publication

    The dramatically increasing development of novel biomaterials, their manufacturing techniques, and surface modications, as well as their application in in vivo tests and clinical trials, is evident. It is interesting to note in what a relatively short time the well-known long-term implants have become medical standard: titanium dental implants started in 1965, and total hip arthroplasty (not very successful) was rst attempted...

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  • A brief note on entire fracture surface topography parameters for 18Ni300 maraging steel produced by LB-PBF after LCF

    Publication

    - ENGINEERING FAILURE ANALYSIS - Year 2023

    The concept of entire fracture surface investigation is helpful in explaining fatigue phenomena. In this paper, this method has been applied for 18Ni300 maraging steel using a 3D measurement system. Before post-mortem analysis, the specimens produced by laser beam powder bed fusion (LB-PBF) were tested under low-cycle fatigue (LCF) for eight strain amplitudes in the interval 0.3% to 1.0%. The attention was placed on the relationship...

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  • Truss imperfections in the design of bar and diaphragm bracing systems

    In the article three variants of roof bracing were considered: bar bracing, diaphragm bracing and the combination of bar and diaphragm bracing. Different analytical and numerical ways of taking into account the imperfections of the truss girder were compared. The entire 3D model of the roof (shell and beam elements with the eccentricities taken into account) was analysed numerically. Selected stressed-skin aspects were considered....

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  • The buckling analysis of a cold-formed steel C-sectional column resting on an elastic foundation

    Publication

    The paper is focused on stability analysis of different models of steel cold-formed C-section column. The analysed element may be applied as a primary load-bearing member in steel trusses or silo columns. The column can be used as a support for a wall of roof plates made of corrugated sheets. The wall sheeting that restrains the column against buckling may be considered as an elastic foundation. Due to the design solutions the...

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  • THE APPLICATION OF KALMAN FILTERING TO PREDICT VERTICAL RAIL AXIS DISPLACEMENTS OF THE OVERHEAD CRANE BEING A COMPONENT OF SEAPORT TRANSPORT STRUCTURE

    As the devices designed to transport materials, the overhead cranes should meet certain geometric requirements for their operation to be safe. The presently available geodetic equipment, in particular total stations, provides opportunities for precise 3D measurements of coordinates of the controlled points. These coordinates make a basis for correcting the height of crane runway axes. The paper presents a method to calculate position...

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  • EXPERIMENTAL AND NUMERICAL INVESTIGATIONS OF CONCRETE BEHAVIOUR AT MESO-LEVEL DURING QUASI-STATIC SPLITTING TENSION

    Publication

    The paper describes experimental and numerical results of quasi-static splitting tensile tests on concrete specimens at meso-scale level. The loading strip was made of plywood or steel. Fracture in concrete was detected at the aggregate level by means of three non-destructive methods: 3D x-ray micro-computed tomography, 2D scanning electron microscope and manual 2D digital microscope. The discrete element method was used to directly...

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  • Techniki CAD w pracy inżyniera 2021/2022 sem./ letni

    e-Learning Courses
    • A. Wilk
    • A. Jakubowski
    • Ł. Sienkiewicz

    Kurs "Techniki CAD w pracy inżyniera" jest cyklem wykładów i laboratoriów dotyczących zastosowania nowoczesnych narzędzi CAD/CAE/CAM w inżynierii elektrycznej i mechanicznej. Zakres kursu obejmuje: Techniki modelowania w przestrzeni 2D i 3D, Wiązania obiektów - kinematyka odwrotna, Podstawy animacji obiektów, Przykłady analizy inżynierskiej z wykorzystaniem MES, Modelowanie wiązek przewodów i kabli elektrycznych, Opracowywanie...

  • Bending test results of first metatarsophalangeal joint after arthrodesis with medially or dorsally positioned locking plate and lag screw.

    Open Research Data
    open access

    The Dataset contains the results of the bending test of first metatarsophalangeal (MTP1) joint specimens after arthrodesis.

  • LDRAW based positional renders of LEGO bricks

    Open Research Data
    open access
    • M. Wysoczańska
    • M. Rutkiewicz
    • K. Mastalerz
    • T. Boiński
    - series: LEGO - partial

    243 different LEGO bricks renders of size 250x250 in 5 colors in 120 viewing angles stored as JPEG images. The renders are used to train neural networks for bricks recognition. All images were generated using L3P (http://www.hassings.dk/l3/l3p.html) and POV-Ray (http://www.povray.org/) tools and were based on the 3D models from LDraw (https://www.ldraw.org/)...

  • Karol Grębowski dr inż.

     Karol Grębowski (M.Sc.) works as an assistant at the Department of Technical Fundamentals of Architecture Design of the Faculty of Architecture at Gdansk University of Technology. His scientific research deals with dynamic phenomena occurring during the vibration of structures, bridges, and studies the design methodology of the elements forming passive protection system of the vehicles degraded  by struck or explosion in the context...

  • Shear fracture of longitudinally reinforced concrete beams under bending using Digital Image Correlation and FE simulations with concrete micro-structure based on X-ray micro-computed tomography images

    The paper presents experimental and numerical investigations of the shear fracture in rectangular concrete beams longitudinally reinforced with steel or basalt bar under quasi-static three point bending. Shear fracture process zone formation and development on the surface of beams was investigated by Digital Image Correlation (DIC) whereas thorough analyses of 3D material micro-structure, air voids, width and curvature of shear...

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  • Polymodal Method of Improving the Quality of Photogrammetric Images and Models

    Publication

    - ENERGIES - Year 2021

    Photogrammetry using unmanned aerial vehicles has become very popular and is already commonly used. The most frequent photogrammetry products are an orthoimage, digital terrain model and a 3D object model. When executing measurement flights, it may happen that there are unsuitable lighting conditions, and the flight itself is fast and not very stable. As a result, noise and blur appear on the images, and the images themselves can...

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  • Production of six-degrees-of-freedom (6DoF) navigable audio using 30 Ambisonic microphones

    Publication
    • B. Mróz
    • M. Kabaciński
    • T. Ciotucha
    • A. Rumiński
    • T. Żernicki

    - Year 2021

    This paper describes a method for planning, recording, and post-production of six-degrees-of-freedom audio recorded with multiple 3rd order Ambisonic microphone arrays. The description is based on the example of recordings conducted in August 2020 with the Poznan Philharmonic Orchestra using 30 units of Zylia ZM-1S. A convenient way to prepare and organize such a big project is proposed – this involves details of stage planning,...

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  • Lateral load resistance of piled raft foundation - A case study of District Jail, Saidu Sharif, Swat Pakistan

    Publication
    • I. Jamil
    • I. Khan
    • M. Amjad
    • M. Ahmad
    • U. Farooq
    • T. Bibi

    - International Journal of Applied Engineering Research (Netherlands) - Year 2021

    Piled raft foundations under lateral loads are usually designed as a pile group, ignoring the contribution of the raft to resisting the lateral loads. In this paper, a case study was performed to determine the raft's contribution to the lateral load resistance. This study analyzed a pile-supported reinforced concrete retaining wall for two different foundation conditions, i.e., pile group foundation and pile raft foundation. Pile group...

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  • Laboratory investigation with subbottom parametric echosounder SES-2000 standard with an emphasis on reflected pure signals analysis

    Publication

    - Year 2013

    The main goal of the paper is to describe correlations between measurements results of trials taken on Gulf of Gdańsk bottom sounded with parametric echosounder SES-2000 Standard and laboratory research where collected during survey sediments were measured. Stationary tests took place at Gdansk University of Technology where 30 meters long 1.8 meter deep and 3 meters wide water tank is located. Main lobe of antenna was directed...

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  • Smooth start for strategry game development supported by XNA framework

    To attract young and casual game developers, Microsoft created a set of libraries oriented towards easier game development and end-product management. The aim of XNA Framework is to provide a unified software development environment for creating games for both PC's and dedicated platforms like XBOX consoles or mobile phones capable of 3D acceleration. The use of modern, object oriented languages available for the .NET platform...

  • Optimal shape and stress control of geometrically nonlinear structures with exact gradient with respect to the actuation inputs

    Publication

    - Structures - Year 2024

    This paper presents an efficient and robust optimization methodology for stress and shape control of actuated geometrically nonlinear elastic structures, applied to 3D trusses. The actuation inputs, modeled as prescribed strains, serve as the optimization variables. The objective is to minimize total actuation while satisfying several constraints: (i) actuation bounds in each actuated element and (ii) target ranges for nodal displacements...

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  • Steroid Sulfatase Inhibitors Based on Phosphate and Thiophosphate Flavone Analogs

    Publication

    - DRUG DEVELOPMENT RESEARCH - Year 2015

    A series of phosphate and thiophosphate flavone derivatives were synthesized and biologically evaluated in vitro for inhibition of steroid sulfatase (STS) activity. The described synthesis includes the straightforward preparation of 7-hydroxy-2-phenyl-4H-chromen-4-one 3a, 2-(4-fluorophenyl)-7-hydroxy-4H-chromen-4-one 3b, 7-hydroxy-2-(4-(trifluoromethyl)phenyl)-4H-chromen-4-one 3c, 7-hydroxy-2-(p-tolyl)-4H-chromen-4-one 3d modified...

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  • Zero-pole approach to computer aided design of in-line siw filters with transmission zeros

    This paper presents a design of a new type of in-line pseudo-elliptic filters implemented in substrate integrated waveguide(SIW) technology. To realize transmission zeros in in-line topology,frequency-dependent couplings were used. Such dispersive couplingswere implemented as shorted stubs. The design process startswith the generation of a suitable starting point. To this end, anapproximation of SIW as a rectangular waveguide is...

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  • Mono- and bi-metallic plasmonic photocatalysts for degradation of organic compounds under UV and visible light irradiation

    Publication

    - CATALYSIS TODAY - Year 2014

    Titania powders were surface modified with gold and/or silver nanoparticles (NPs) by photodeposition method. Gold modified titania exhibited much higher photocatalytic activity during methanol dehydrogenation under UV irradiation than titania modified with monometallic silver and bimetallic Au–Ag NPs. Bimetallic photocatalysts exhibited either enhanced or reduced visible light activity, depending on properties of noble metal NPs,...

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  • Separability Assessment of Selected Types of Vehicle-Associated Noise

    Music Information Retrieval (MIR) area as well as development of speech and environmental information recognition techniques brought various tools in-tended for recognizing low-level features of acoustic signals based on a set of calculated parameters. In this study, the MIRtoolbox MATLAB tool, designed for music parameter extraction, is used to obtain a vector of parameters to check whether they are suitable for separation of...

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  • Phage-Directed Synthesis of Photoluminescent Zinc Oxide Nanoparticles under Benign Conditions

    Publication

    - BIOCONJUGATE CHEMISTRY - Year 2016

    Biological systems, especially bacteriophages and peptides, are an attractive green alternative to other known methods of nanoparticle synthesis. In this work, for the first time, bacteriophages were employed to synthesize a specific peptide, capable of producing nanoparticles (NPs). Derivatives of M13 bacteriophage exposing a ZnO-binding peptide (TMGA-LGLKWPV) on either pIII or pVIII phage coat protein were constructed and used...

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  • BIM jako narzędzie wspomagające zarządzanie ryzykiem przedsięwzięcia inwestycyjnego

    Publication

    W artykule prezentuje się przykłady dużych rozbieżności w kalkulacji kosztu inwestycji przez zamawiającego i oferentów oraz zasadnicze przyczyny najczęściej występującego w praktyce ryzyka przekroczenia parametrów przedsięwzięcia inwestycyjnego. Wskazano możliwości wyeliminowania tak znacznych różnic dzięki zastosowaniu technologii BIM oraz stosowaniu jednakowych i spójnych danych przez wszystkich uczestników przedsięwzięcia inwestycyjnego....

  • Sounding Mechanism of a Flue Organ Pipe—A Multi-Sensor Measurement Approach

    Publication

    - SENSORS - Year 2024

    This work presents an approach that integrates the results of measuring, analyzing, and modeling air flow phenomena driven by pressurized air in a flue organ pipe. The investigation concerns a Bourdon organ pipe. Measurements are performed in an anechoic chamber using the Cartesian robot equipped with a 3D acoustic vector sensor (AVS) that acquires both acoustic pressure and air particle velocity. Also, a high-speed camera is employed...

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  • Example of Using Particle Swarm Optimization Algorithm with Nelder–Mead Method for Flow Improvement in Axial Last Stage of Gas–Steam Turbine

    Publication

    - ENERGIES - Year 2024

    This article focuses principally on the comparison baseline and the optimized flow efficiency of the final stage of an axial turbine operating on a gas–steam mixture by applying a hybrid Nelder– Mead and the particle swarm optimization method. Optimization algorithms are combined with CFD calculations to determine the flowpaths and thermodynamic parameters. The working fluid in this study is a mixture of steam and gas produced...

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