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Search results for: brace stiffness
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Nowe pompy i silniki hydrauliczne - prace rozwojowe w Katedrze Hydrauliki i Pneumatyki Politechniki Gdańskiej
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Trace analyses of gaseous products formed during heat treatment of high stage H2SO4-GICs and expanded graphite
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Migration of trace elements and radioisotopes to various fractions of solid wastes generated as a result of the sewage sludge incineration process
PublicationThe research was aimed at providing new knowledge in the field of chemical characteristics of solid waste generated in the process of combustion of sewage sludge in fluidized bed furnaces. The research material consisted of disposed fluidized beds (DFB), sewage sludge ash (SSA) and air pollution control residues (APC) from three Polish installations for the thermal treatment of sewage sludge. Natural radionuclides as well as anthropogenic...
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Prace doktorskie, habilitacje oraz profesury o tematyce chemii analitycznej i pokrewnej w 2020 r.,
PublicationZestawienie prac doktorskich, habilitacyjnych oraz profesur o tematyce chemii analitycznej i pokrewnej w 2020 r.,
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Airborne wear particle emission from train brake friction materials with different contents of steel and copper fibres
PublicationThis study investigated the influence of the amount of steel and copper fibres in a train brake friction material on the tribological performance, emission intensity and characteristics of airborne wear particles. The particles were generated on a pin-on-disc tribometer under controlled friction and environmental conditions. It was found that the steel fibre results in a more intensive emission of 0.3–10 μm particles compared to...
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Prace doktorskie, habilitacje oraz profesury o tematyce chemii analitycznej i pokrewnej w 2021 r.
PublicationPublikacja zawiera zestawienie prac doktorskich, habilitacji oraz profesur o tematyce chemii analitycznej i pokrewnej w 2021 r.,
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Prace doktorskie, habilitacje oraz profesury o tematyce chemii analitycznej i pokrewnej w 2014 r.
PublicationZestawienie prac doktorskich, habilitacji oraz profesur o tematyce chemii analitycznej i pokrewnej przeprowadzonych na polskich uczelniach w 2014 r.
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Wzrost gospodarczy a zapotrzebowanie na prace - teoria i rzeczywistość gospodarcza Polski w latach 1995-2014
PublicationW części teoretycznej artykułu w pierwszej kolejności przedstawiono makroekonomiczne podstawy zapotrzebowania na pracę w warunkach postępu technicznego oraz zmian kapitału rzeczowego. W następnej kolejności sformułowano założenia dla modelu opisującego zależności pomiędzy stopami wzrostu produktu krajowego i zatrudnienia. W części empirycznej artykułu rozważano wybrane wersje oszacowanego modelu opisujące gospodarkę Polski. Do...
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Prace doktorskie, habilitacje oraz profesury o tematyce chemii analitycznej i pokrewnej w 2017 r.
PublicationZestawienie prac doktorskich, habilitacji oraz profesur o tematyce chemii analitycznej i pokrewnej przeprowadzonych na polskich uczelniach w 2015 r.
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Application of ion chromatography with pulsed amperometric detection for the determination of trace cyanide in biological samples, including breast milk
PublicationCyanide (CN) is the biomarker of exposure to the components of tobacco smoke, although its presence in biological samples is also due to the consumption of products containing cyanogenic glycosides. In this work, we determine the concentration of the free cyanide in urine, saliva and breast milk matrices, using ion chromatography with pulsed amperometric detection (IC-PAD). IC-PAD is an emerging method, with only few documented...
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Seismic Response Analysis of Knee-Braced Steel Frames Using Ni-Ti Shape Memory Alloys (SMAs)
PublicationShape Memory Alloys (SMAs) are known as active materials that can be widely used for structural purposes due to their flag-shape behavior under loading and reloading. Their unique characteristics provided a potential solution for civil engi-neers especially to model buildings with the capability of dissipating seismic en-ergy. In this study, the main purpose is to explore the seismic behavior of Knee-Braced Frames (KBFs) and...
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Numerical analysis of influence of intermediate stiffeners setting on the stability behaviour of thin-walled steel tank shell
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Inverse modeling for fast design optimization of small-size rat-race couplers incorporating compact cells
PublicationIn the paper, a framework for computationally-efficient design optimization of compact rat-race couplers (RRCs) is discussed. A class of hybrid RRCs with variable operating conditions is investigated, whose size reduction is obtained by replacing ordinary transmission lines with compact microstrip resonant cells (CMRCs). Our approach employs a bottom-up design strategy leading to the development of compact RRCs through rapid design...
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A structure and design optimization of novel compact microscrip dual-band rat-race coupler with enhanced bandwidth
PublicationIn the letter, a topology of a novel compact wideband dual-band rat-race coupler has been presented along with its computationally efficient design optimization procedure. Reduction of the circuit size has been achieved by meandering transmission lines of the conventional circuit. At the same time, the number of independent geometry parameters has been increased so as to secure sufficient flexibility of the circuit, necessary in...
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Rapid Design Tuning of Miniaturized Rat-Race Couplers Using Regression-Based Equivalent Network Surrogates
PublicationA simple technique for fast design tuning of compact rat-race couplers is presented. Our approach involves equivalent circuit representation, corrected by nonlinear functions of frequency with coefficients extracted through nonlinear regression. At the same time, the tuning process connects two levels of coupler representation: EM simulation of the entire circuit and re-optimization of the coupler building blocks (slow-wave cells...
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Critical Philosophy of Race
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Race and Social Problems
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Race, Ethnicity and Education
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Sociology of Race and Ethnicity
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Assessment of Trace Metals Leaching During Rainfall Events from Building Rooftops with Different Types of Coverage – Case Study
PublicationRunoff water is an important medium transporting various types of pollution originating from the atmosphere and washed out from roofing materials. The study presents a quality assessment of runoff from different roofs in the context of trace metal concentrations. The analysed rooftops were covered with copper, tar paper and ceramic tile. The quality of the rain water collected at the same time satisfies the demands of the first...
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In-Syringe Dispersive Liquid-Liquid Microextraction Coupled with High- Performance Liquid Chromatography for Trace Analysis of Naphthalene Sulfonates in Seawater
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Preparation and evaluation of solid-phase microextraction fibres based on functionalized latex nanoparticle coatings for trace analysis of inorganic anions
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Development and Validation of a Gas Chromatography Method for the Trace Level Determination of Allylamine in Sevelamer Hydrochloride and Sevelamer Carbonate Drug Substances
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Problemy analogowej realizacji sztucznej sieci neuronowej. Prace XX Ogólnopolskiej Konferencji Polioptymalizacja i Komputerowe Wspomaganie Projektowania.
PublicationW pracy przedstawiono problemy związane z realizacją sprzętową, w technice analogowej, sztucznej sieci neuronowej. Cele które sobie stawiano to szybkość działania uzyskanej sieci i niski koszt wytworzenia. Uzyskane rezultaty nie zadowalają autorów.
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Kościół franciszkanów Świętego Andrzeja Apostoła w Barczewie: badania i prace konserwatorskie w latach 2018-2023
PublicationArtykuł stanowi sprawozdanie z prac konserwatorskich prowadzonych w kościele franciszkańskim w Barczewie przez firmę Gorek Restauro wraz z odniesieniem do wynikow badań terenowych: architektonicznych, archeologicznych i konserwatorskich
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OPRACOWANIE DOKUMENTACJI PRZEDPROJEKTOWEJ DLA PROJEKTU „PRACE NA LINII KOLEJOWEJ NR 1 NA ODCINKU CZĘSTOCHOWA – ZAWIERCIE” w ramach projektu POIiŚ 7.1 – 103 „Prace na wybranych liniach kolejowych w perspektywie UE 2014-2020 – Prace przygotowawcze” umowa nr 60/039/0009/14/Z/I ETAP IV Analizy techniczne wariantów inwestycyjnych z oszacowaniem kosztów System zasilania trakcji.
PublicationW opracowaniu przedstawiono analizę układu zasilania elektrotrakcyjnego linii kolejowej nr 1 pomiędzy Częstochową a Zawierciem. Prace wykonano w ramach projektu Unii Europejskiej i Narodowej Strategii Spójności
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Studia i Prace Kolegium Zarządzania i Finansów
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Prace Naukowe Politechniki Radomskiej: Transport
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Eye-Tracking Examination of the Anthropological Race, Gender and Verbal-Pictorial Relative Positions on Ergonomics of Visual Information Presentation
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Molecularly imprinted stir bar sorptive extraction coupled with atomic absorption spectrometry for trace analysis of copper in drinking water samples
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Molecularly imprinted stir bar sorptive extraction coupled with high-performance liquid chromatography for trace analysis of naphthalene sulfonates in seawater
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Emission and properties of airborne wear particles from train brake friction materials based on novolac phenolic resins and butadiene rubbers
PublicationThe emission of airborne particulate matter from a train brake depends on the formulation of its friction material. This study investigates the emission and properties of wear particles from train brake friction materials based on straight or resorcinol-modified novolac phenolic resin and nitrile or styrene butadiene rubber used as binding ingredients. The wear particles are generated by a pin-on-disc tribomachine inside an aerodynamic...
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Comparative analysis of the theoretical models of ideal propulsor, ideal fluid brake, ideal screw propeller and ideal axial wind turbine
PublicationThe article presents a detailed discussion of four different fluid dynamics devices.These devices are presented with all relevant mathematical formulae regarding the forces, the power and the efficiency. It is demonstrated that application of the Betz theorem to axial wind turbines is not correct and it underestimates the maximujm achievable efficiency. This conclusion is supported by numerical calculations.
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Determination of trace levels of eleven bisphenol A analogues in human blood serum by high performance liquid chromatography–tandem mass spectrometry
PublicationChemicals showing structural or functional similarity to bisphenol A (BPA), commonly called BPA analogues, have recently drawn scientific attention due to their common industrial and commercial application as a substitute for BPA. In the European Union, the use of BPA has been severely restricted by law due to its endocrine disrupting properties. Unfortunately, it seems that all BPA analogues show comparable biological activity,...
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Prace Wydziału Nawigacyjnego Akademii Morskiej w Gdyni
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Prace Filologiczne [Philological Studies]
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Prace Komisji Neofilologicznej PAU
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Dissertation of Cultural Landscape Commission
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JOURNAL OF TRACE AND MICROPROBE TECHNIQUES
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PRACE I MATERIAŁY ZOOTECHNICZNE
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PRACE PRZEMYSŁOWEGO INSTYTUTU TELEKOMUNIKACJI
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PRACE IPPT - IFTR REPORTS
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Prace Przemysłowego Instytutu Elektroniki
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PRACE PAŃSTWOWEGO INSTYTUTU GEOLOGICZNEGO
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Geographical Studies
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Explicit Size-Reduction-Oriented Design of a Compact Microstrip Rat-Race Coupler Using Surrogate-Based Optimization Methods
PublicationIn this paper, an explicit size reduction of a compact rat-race coupler implemented in a microstrip technology is considered. The coupler circuit features a simple topology with a densely arranged layout that exploits a combination of high- and low-impedance transmission line sections. All relevant dimensions of the structure are simultaneously optimized in order to explicitly reduce the coupler size while maintaining equal power...
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The chemistry of river–lake systems in the context of permafrost occurrence (Mongolia, Valley of the Lakes). Part I. Analysis of ion and trace metal concentrations
PublicationThis study provides a description of water chemistry in river–lake systems located in central Mongolia, at the borderline of permafrost occurrence. The analysis involved water samples collected from two river–lake systems: Baydrag River–Böön Tsagaan Lake system, and Shargalyuut/Tuyn Rivers–Orog Lake system. In the water samples, ions and trace elements were detected and quantified. Additionally, the parameters of pH, electrical...
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Enrichment and distribution of trace elements in Padhrar, Thar and Kotli coals from Pakistan: Comparison to coals from China with an emphasis on the elements distribution
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Obliczenia wymuszeń drgań skrętnych dla czterosuwowych silników widlastych. Prace XX Ogólnopolskiej Konferencji Polioptymalizacja i Komputerowe Wspomaganie Projektowania.
PublicationW pracy przedstawiono dwie metody obliczeniowe wymuszeń dla czterosuwowych silników widlastych. Najczęściej dane są przez producentów silników oddzielnie wymuszenia gazowe oraz wymuszenia masowe pochodzące od sił bezwładności.Dane te podawane są dla jednego cylindra. Na ich podstawie oblicza się ciśnienie styczne, a następnie dokonuje się rozkładu tej funkcji w szereg Fouriera. Uzyskuje się w ten sposób amplitudy i fazy poszczególnych...
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A comparative study of sequential extraction methods for identification of trace elements fractions (Cr, Ni, Pb, Cd) in urban soils from several parks
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