Wyniki wyszukiwania dla: rip currents

• Zastosowanie numerycznego modelu obiektu do oceny zgodności realizacji pro-jektu budowli gabionowej. W: Współczesna geodezja w rozwoju nauk techni- cznych, przyrodnicznych i ekonomicznych. Warszawa::SGGH**2003 s. 315-321, 3 rys. bibliogr. 6 poz.

  Publikacja

  • T. Wronowski

  - Rok 2003

  W pracy przedstawiono sposoby badania oceny zgodności realizacji projektu budowli gabionowej. Zastosowano numeryczny model obiektu (NMO) i wyniki geodezyjnej inwentaryzacji powykonawczej (GIP) budowli gabionowej. Opracowano etapy badania oceny zgodności realizacji projektu. Opisano wewnętrzne i zewnętrzne błędy realizacji projektu. Na przykładzie muru oporowego wykonanego z gabionów dokonano wizualizacji wykrytych błędów realizacji...

• pH-dependent composite coatings for controlled drug delivery system - Review

  Publikacja

  • Ł. Pawłowski
  • M. Bartmański
  • A. Zieliński

  - Inżynieria Materiałowa - Rok 2019

  Nowadays in case of long-term implants, the most common postoperative complications are bacterial infections, which in consequence may provoke loos- ening of the implants in the primary phase of stabilization. Bacterial infections are currently the most frequent cause of revision surgery of the implants such as hip joint endoprosthesis, knee joint endoprosthesis and dental implants. In order to provide the local and long-term antibacterial...

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• CM Voltage Compensators for Power Electronic Interfaces

  Publikacja

  • R. Smoleński
  • J. Bojarski
  • P. Leżyński
  • A. Kempski
  • J. Łuszcz

  - IEEE Electromagnetic Compatibility Magazine - Rok 2015

  The experimental results presented in the paper have shown that the application of the PEIs might cause EMC related problems, especially in the case of the application of a group of connected converters. The most convenient way to reduce EMI currents and prevent aggregation of EMI currents introduced by a group of converters is through passive compensation of voltage interference sources inside of the single converters. In the...

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• Polymers for burn dressings and skin substitutes

  Publikacja

  • P. Gnatowski
  • K. Gwizdała
  • E. Piłat
  • J. Kucińska-Lipka

  - Rok 2023

  Skin burns belong to the group of the most complex injuries due to convoluted skin structure which includes nerve cells, muscles, sweat and sebaceous glands and blood vessels. Both on the market and at the research stage, there are many different dressing and skin substitutes proposals that utilize various materials and active substances. This chapter focuses on summarizing and describing the most popular polymer-based commercial...

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• Low cost set-up for supercapacitors parameters evaluation

  Publikacja

  • A. Szewczyk

  - Journal of Physics : Conference Series - Rok 2018

  Supercapacitors are capable to store relatively high amount of energy comparing to its mass. Growing number of these devices applications requires development of new testing methods. Standard methods of evaluation of supercapacitor parameters, as cycling voltammetry, CV, galvanostatic cycling with potential limitation, GCPL, impedance measurements, require equipment of high cost...

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• DEEP LEARNING BASED ON X-RAY IMAGING IMPROVES COXARTHROSIS DETECTION

  Publikacja

  • M. Maj
  • J. Borkowski
  • J. Wasilewski
  • S. Hrynowiecka
  • A. Kastrau
  • M. Liksza
  • P. Jasik
  • M. Treder

  - Rok 2022

  Objective: The purpose of the study was to create an Artificial Neural Network (ANN) based on X-ray images of the pelvis, as an additional tool to automate and improve the diagnosis of coxarthrosis. The research is focused on joint space narrowing, which is a radiological symptom showing the thinning of the articular cartilage layer, which is translucent to X-rays. It is the first and the most important of the radiological signs...

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• Synthesis, spectroscopy and computational studies of some novelphosphorylated derivatives of quinoline-5,8-diones

  Publikacja

  • J. Nycz
  • G. Malecki
  • Ł. Ponikiewski
  • M. Leboschka
  • M. Nowak
  • J. Kusz

  - JOURNAL OF MOLECULAR STRUCTURE - Rok 2011

  The neutral phosphorus nucleophiles such as R2P(=Y)M allowed the radical addition to 2-methyl-5,8-dioxo-5,8-dihydroquinoline-7-amine and N-(2-methyl-5,8-dioxo-5,8-dihydroquinolin-7-yl)acetamide giving exclusively O-phosphorylated products. All products were quantitatively prepared and characterized by microanalysis, and multinuclear NMR spectroscopy. Seven of them, have been characterized by single crystal X-ray diffraction method....

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• Optical properties of thin TiO2 film deposited on the fiber optic sensor head

  Publikacja

  • M. Hirsch

  - Rok 2017

  The presented study was focused on investigation of the titanium dioxide (TiO2) thin film deposited on the fiber tip. The intention of this investigation was using TiO2 film in the construction of the optical fiber sensor head. In the demonstrated construction TiO2 thin layer was deposited on the tip of a commonly used telecommunication single mode optical fiber (SMF-28) by means of the Atomic Layer Deposition (ALD). Thickness...

• Analysis of the relationship between the length of eye fixation and the parameters of advertisements visible from the road

  Publikacja

  • T. Mackun
  • J. Żukowska

  - MATEC Web of Conferences - Rok 2018

  In Poland, many advertising signs addressed to motorists are located along the roadside. Advertisements do not serve any traffic related purpose and can distract drivers making them less reliable and as a consequence, reduce road safety. The existing regulations only apply to the carriageway. The research is conducted as part of the RID project. The objective of the RID project is to create a "Manual for positioning roadside advertising...

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• Towards application of uncertainty quantification procedure combined with experimental procedure for assessment of the accuracy of the DEM approach dedicated for granular flow modeling

  Publikacja

  • A. Widuch
  • M. L. Nowak
  • D. Sukiennik
  • K. Myöhänen
  • M. Nikku
  • S. Shah
  • A. Parente
  • W. Adamczyk

  - POWDER TECHNOLOGY - Rok 2022

  There is a high demand for accurate and fast numerical models for dense granular flows found in many industrial applications. Nevertheless, before numerical model can be used its need to be always validated against experimental data. During the validation, it is important to consider how the measurement data sets, as well as the numerical models, are affected by errors and uncertainties. In this study, the uncertainty quantification...

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• Morskie technologie obronne

  Publikacja

  • L. Rowiński
  • K. Jakubiuk
  • R. Salamon
  • P. Zimny
  • A. Ogonowski
  • M. Wołoszyn

  - Rok 2010

  Praca wspólna Centrum Morskich Technologii Militarnych PG - Zespołu Hydroakustyki, Techniki Głębinowej oraz Obrony Biernej Okrętu.W pracy przedstawiono przykłady technologii morskich wdrożonych w Marynarce Wojennej R.P. Opisano przebieg prac związanych z opanowaniem technologii. Podstawą pozytywnych wyników prac Centrum Morskich Technologii Militarnych było ponad 50-letnie doświadczenie w budowie morskich systemów obronnych dla...

• Ring thruster - a preliminary optimisation study of ferrofluid seal and propeller

  Publikacja

  • L. Matuszewski
  • Z. Szydło

  - Polish Maritime Research - Rok 2007

  The article reports the course of preliminary examination of a ferrofluid seal applied in liquid environment.A newly built research rig is described, and results of pressure tests performed for different shaft rotationsare discussed. Other studies carried out in the past only referred to the gas environment, while the presentexamination aims at finding an answer to the question whether magnetic liquids can be successfully used...

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• Implementation of Business Processes in Smart Cities Technology

  Publikacja

  • C. Orłowski
  • A. Ziółkowski
  • A. Orłowski
  • P. Kapłański
  • T. Sitek
  • W. Pokrzywnicki

  - LNCS Transactions on Computational Collective Intelligence - Rok 2016

  The goal of the paper is to present the results of studies concerning the development of a method of implementation of business processes in Smart Cities systems. The method has been developed during studies carried out within the building of a Smart Cities system for Gdańsk, and is based on basic development project management mechanisms (drawing from best practices, and in particular from the RUP methodology) and business-oriented...

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• Badania wytrzymałościowe nowych paneli kompozytowych w budownictwie mieszkaniowym

  Publikacja

  • Ł. Smakosz
  • J. Tejchman

  - Przegląd Budowlany - Rok 2012

  W pracy przedstawiono wyniki badań wytrzymałościowych na zginanie i ściskanie nowych na polskim rynku budowlanym paneli kompozytowych SIP. Panele składają się z 2 sztywnych okładzin cementowo-magnezjowych zbrojonych włóknem szklanym oraz miękkiego rdzenia ze styropianu. Panele charakteryzują się m.in. niskim ciężarem, szybkim i łatwym montażem oraz wysoką wytrzymałością, ognioodpornością, odpornością na korozję i izolacyjnością...

• Higher harmonics produced by traction substations – computer modelling and experimental verification

  Publikacja

  • R. Kowalak
  • S. Czapp
  • K. Dobrzyński
  • J. Klucznik
  • Z. Lubośny

  - Rok 2016

  Voltage and current harmonics have a detrimental effect on the components of a power system. Current harmonics may result in the overload and damage to power transformers, although the rms value of load current does not exceed their current-carrying capacity. Voltage harmonics may result in, for example, damage to capacitor banks used to compensate reactive power. Devices which contribute to both current and voltage distortion...

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• High Frequency Harmonics Emission in Smart Grids

  Publikacja

  • J. Łuszcz

  - Rok 2013

  Pulse-width modulated rectifiers are nowadays commonly used for AC to DC power conversion. PWM rectification technology is very effective and allows for bidirectional power flow with the possibility of power factor improvement and low-order harmonic emission limitation. Unfortunately, employed PWM boost topology results with generation of input current harmonic distortions in a frequency range tightly correlated to modulation frequency....

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• Low Frequency Conducted Emissions of Grid Connected Static Converters

  Publikacja

  • J. Łuszcz
  • R. Smolenski

  - IEEE Electromagnetic Compatibility Magazine - Rok 2015

  Pulse-width modulated rectifiers are nowadays commonly used for AC to DC power conversion. PWM rectification technology is very effective and allows for bidirectional power flow with the possibility of power factor improvement and low-order harmonic emission limitation. Unfortunately, employed PWM boost topology results with generation of input current harmonic distortions in a frequency range tightly correlated to modulation frequency....

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• Sustainability reporting in justice systems: a comparative research in two European countries

  Publikacja

  • F. Fusco
  • R. Civitillo
  • P. Ricci
  • S. Morawska
  • K. Pustułka
  • P. Banasik

  - Meditari Accountancy Research - Rok 2022

  Purpose – That on accountability in public organizations is quite an old debate. Its introduction in judicial systems is, however, still viewed with some suspicion, due to its potential trade-off with independence and impartiality. Nevertheless, the need to respond to the demands for greater transparency and accountability has also pushed judicial organizations to establish a dialogue with a wide range of subjects. This study aims...

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• Kompetencje analityka biznesowego

  Publikacja

  • A. Bobkowska

  - Rok 2011

  Publikacja zawiera slajdy do prezentacji stanu wiedzy dotyczącej kompetencji analityków biznesowych dla menedżerów oraz analityków z przemysłu. Prezentacja porusza następujące tematy: rodzaje kompetencji analityka i rola kompetencji behawioralnych; przegląd kompetencji analityków według IBM RUP, IIBA BABOK oraz badań ankietowych polskich analityków; wybrane wyniki z zakresu psychologii w inżynierii oprogramowania oraz wynikające...

• Konkurencyjność regionów w świetle nowej gospodarki - rolatechnologii informacyjnych

  Publikacja

  • K. Tubielewicz

  - Rok 2006

  W pracy przedstawiono zagadnienia związane z rolą IToraz zintegrowanych systemów informacyjnych wspomagających zarządzaniemiastem, ich wpływ na konkurencyjność oraz rozwój miast i regionów wnowej gospodarce. Zwrócono uwagę na możliwości wykorzystania technikinformacyjnych oraz systemów wspomagających zarządzanie miastem, takich jak: mapy numeryczne, SIP czy GPS. Przewaga konkurencyjna kraju, regionu, miasta jak i przedsiębiorstwa...

• Installation of CMC columns in overconsolidated clays

  Publikacja

  • L. Bałachowski
  • J. Konkol
  • N. Kurek

  - Rok 2017

  During rigid inclusions execution in the subsoil some monitoring data are registered by a drilling rig for quality control. The use of these data can improve the design procedure of soil improvement as they can provide some information about the position of bearing strata and the energy necessary to install the column in the ground. In this paper the parameters registered in a drilling machine are described, the installation...

• Analysis and simulation of the reliable multicast protocol.

  Publikacja

  • J. Jurski
  • J. Konorski

  - TELEKOMUNIKACJA CYFROWA. TECHNOLOGIE I USŁUGI - Rok 2003

  Artykuł przedstawia badania dotyczące protokołu grupowego porządkowania wiadomości-RMP. Opisana została podstawowa idea algorytmów działania protokołu oraz jego najważniejsze własności. Ponadto został on zimplementowany jako część symulatora protokołów komunikacji grupowej. Wyniki badań i dogłębna analiza mechanizmów działania protokołu pozwoliła na wprowadzenie szeregu modyfikacji w stosunku do oryginalnej specyfikacji,...

• Systemy informacji przestrzennej i systemy ekspertowe w zarządzaniu hałasem

  Publikacja

  • A. Janowski
  • D. Wróblewska
  • J. Szulwic

  - Rok 2005

  W referacie przedstawiono opis systemu ekspertowego, zintegrowanego z SIP, wspomagającego podejmowanie decyzji związanych z ochroną osiedli mieszkaniowych i centrów miast przed istniejącym hałasem transportowym. System nawiązuje do europejskiego i polskiego programu ochrony przed hałasem. Proponowany system opiera się częściowo na wynikach dostarczanych przez procedury programu ochrony, np. monitorowanie środowiska, sporządzanie...

• Utilization of Gaseous Carbon Dioxide and Industrial Ca-rich Waste for Calcium Carbonate Precipitation: A Review

  Publikacja

  • N. Czaplicka
  • D. Konopacka-Łyskawa

  - ENERGIES - Rok 2020

  Technologies for the management of various types of waste and the production of useful products from them are currently widely studied. Both carbon dioxide and calcium-rich waste from various production processes are problematic wastes that can be used to produce calcium carbonate. Therefore, the purpose of this paper is to provide an overview about the state of the development of processes that use these two wastes...

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• Możliwości wykorzystania w praktyce analitycznej sorbentów polimerowych z odciskiem molekularnym do wyodrębniania i/lub wzbogacania analitów z grupy trwałych zanieczyszczeń organicznych z próbek środowiskowych

  Publikacja

  • M. Marć
  • J. Namieśnik
  • P. P. Wieczorek

  - Przemysł Chemiczny - Rok 2017

  Przedstawiono przegląd informacji, które się pojawiły w ciągu ostatniego okresu czasu dotyczących wykorzystania w codziennej praktyce analitycznej różnego typu rozwiązań metodycznych wykorzystujących na etapie izolacji i/lub wzbogacania analitów z grupy trwałych zanieczyszczeń organicznych (TZO) sorbentów polimerowych z odciskiem molekularnym (MIP). Tego typu sorbenty znalazły szerokie zastosowanie przede wszystkim jako alternatywne...

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• Long-Period Gratings and Microcavity In-Line Mach Zehnder Interferometers as Highly Sensitive Optical Fiber Platforms for Bacteria Sensing

  Publikacja

  • T. Eftimov
  • M. Janik
  • M. Koba
  • M. Śmietana
  • P. Mikulic
  • W. J. Bock

  - SENSORS - Rok 2020

  Selected optical fiber sensors offer extraordinary sensitivity to changes in external refractive (RI), which make them promising for label-free biosensing. In this work the most sensitive ones, namely long-period gratings working at (DTP-LPG) and micro-cavity in-line Mach-Zehnder interferometers (µIMZI) are discussed for application in bacteria sensing. We describe their working principles and RI sensitivity when operating in water...

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• Climate change impact on groundwater resources in sandbar aquifers in southern Baltic coast

  Publikacja

  • A. Gumuła-Kawęcka
  • B. Jaworska-Szulc
  • M. Jefimow

  - Scientific Reports - Rok 2024

  Shallow coastal aquifers are vulnerable hydrosystems controlled by many factors, related to climate, seawater‑freshwater interactions and human activity. Given on‑going climate change, sea level rise and increasing human impact, it is especially true for groundwater resources situated in sandbars. We developed numerical models of unsaturated zone water flow for two sandbars in northern Poland: the Vistula Spit and the Hel Spit...

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• Photocatalytic activity and OH radical formation on TiO2 in the relation to crystallinity

  Publikacja

  • B. A. Tryba
  • M. Toyoda
  • A. Morawski
  • R. Nonaka
  • M. Inagaki

  - APPLIED CATALYSIS B-ENVIRONMENTAL - Rok 2007

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• The impact of air humidity on the operation of proton exchange membrane fuel cells determined using dynamic electrochemical impedance spectroscopy

  Publikacja

  • E. Janicka
  • M. Mielniczek
  • Ł. Gaweł
  • K. Darowicki
  • P. Landowska

  - ELECTROCHIMICA ACTA - Rok 2020

  This paper describes the changes in the fuel cell impedance across a range of current loads and humidity changes. The changes of each equivalent circuit parameters representing specific processes occurring in fuel cells, as a function of humidity and current changes, were determined. Within the combined scope of current and humidity, the optimal working conditions of the cells were determined, corresponding to the lowest impedance...

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• Evolution of electrohydrodynamic flow of sduspended particles in a needle-to-plate negative DC corona discharge in air

  Publikacja

  • J. Mizeraczyk
  • A. Berendt
  • J. Podliński
  • A. Niewulis

  - International Journal of Plasma Environmental Science & Technology - Rok 2016

  Corona discharges are used for collecting dust in electrostatic precipitators (ESPs). The dust collection is mainlyrealized by the electric forces which move the ionized dust particles to the collecting electrodes. However, the presence of coronadischarge in the space between the charging and collecting electrodes in ESPs causes also the so-called ionic wind which set the gasmolecules and dust...

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• Economical wood sawing with circular saw blades of a new design (Ekonomicno piljenje drva kruznom pilom novog dezajna)

  Publikacja

  • R. Wasielewski
  • K. Orłowski
  • S. Szyszkowski

  - Drvna Industrija - Rok 2012

  Material-saving and energy-saving belong to the basic requirements imposed on contemporary manufacturing processes. The realization of these processes gives measurable profi ts, not only economical butalso ecological. In the case of wood sawing with circular saw blades, material- and energy-savings are dependent on total overall set of teeth (theoretical kerf) and teeth position accuracy in relation to the workpiece. Hence, it...

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• Boron-doped carbon nanowalls for fast and direct detection of cytochrome C and ricin by matrix-free laser desorption/ionization mass spectrometry

  Publikacja

  • I. Hosu
  • M. Sobaszek
  • M. Ficek
  • R. Bogdanowicz
  • Y. Coffinier

  - TALANTA.The International Journal of Pure and Applied Analytical Chemistry - Rok 2023

  Detecting proteins via surface assisted laser desorption/ionization mass spectrometry (SALDI-MS) method is still highly challenging, and only few examples of nanomaterials have been demonstrated to perform such detection so far. In this study, carbon nanowalls (CNWs), vertically aligned graphene sheet-based materials, presenting specific morphology, dimensions, and boron doping levels have shown improved performances for both qualitative...

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• Sensorless predictive control of three-phase parallel active filter

  Publikacja

  • D. Wojciechowski
  • R. Strzelecki

  - Rok 2007

  The paper presents the control system of parallel active power filter (APF) with predictive reference current calculation and model based predictive current control. The novel estimator and predictor of grid emf is proposed for AC voltage sensorless operation of APF, regardless of distortion of this voltage. Proposed control system provides control of APF current with high precision and dynamics limited only by filter circuit parameters....

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• Experiment-Based Study of Heat Dissipation from the Power Cable in a Casing Pipe

  Publikacja

  • R. Masnicki
  • J. Mindykowski
  • B. Pałczyńska

  - ENERGIES - Rok 2022

  The paper deals with the important challenges in terms of electricity transmission by means of underground cable lines. The power cable’s performance is characterized by an ampacity that represents its maximum electric current-carrying capacity. The ampacity of power cables depends on their ability to diffuse the heat generated by the current flow into the environment. In the performed research, the analysis of the efficiency of...

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• Reactive Energy Billing in Operator Tariffs in Poland

  Publikacja

  • P. Bućko
  • A. Wilczyński

  - Acta Energetica - Rok 2015

  The paper describes the current method of reactive energy billing in the tariffs of distribution grid operators in Poland. The current solutions are subject to critical assessment. Issues related to the motivation effect of the current solutions on consumers are analysed. Problems that occur in relation with connecting distributed generators to the distribution grid and challenges related to prosumer billing are indicated.

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• Measurement system for nonlinear surface spectroscopy by atomic force microscopy for corrosion processes monitoring

  Publikacja

  • S. Babicz-Kiewlicz
  • A. Zieliński
  • J. Smulko
  • K. Darowicki

  - Rok 2013

  In addition to traditional imaging the surface, atomic force microscopy (AFM) enables wide variety of additional measurements. One of them is higher harmonic imaging. In tapping mode the nonlinear contact between tip and specimen results in higher frequency vibrations. More information available from the higher harmonics analysis proves to be helpful for more detailed imaging. Such visualization is especially useful for heterogeneous...

• FEM ANALYSIS AND EXPERIMENTAL TESTS OF RIGID RISER HANGING SYSTEM

  Publikacja

  • A. Olszewski
  • M. Wodtke
  • A. Wójcikowski

  - Polish Maritime Research - Rok 2018

  The article presents the analysis, project, and experimental examination of an original rigid riser for Coil Tubing Pipes. The principle of riser operation is based on the use of friction forces. The research included the FEM analysis of the designed riser, calculations of the required bolt tensions, and checking the effect of the clamping force on stress distribution in the pipeline. The results of computer simulation were verified...

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• Application of Barkhausen method to determine internal stresses in cold-rolled and hot-rolled sheets

  Publikacja

  • A. Łukowicz
  • D. Kowalski

  - Rok 2016

  The paper presents investigations on internal stress distribution in plane hot—or cold-rolled sheets dedicated for the cold-formed profiles. The motivation of the research is a new profile design whose bending technology, incorporating a longitudinal welded joint and hot-dip galvanization after bending and welding introduces additional internal stresses. In order to identify the entirety of stresses in the process of sheet production...

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• Implementacja procesów biznesowych w technologiach Smart Cities

  Publikacja

  • A. Orłowski
  • C. Orłowski
  • T. Sitek
  • A. Ziółkowski
  • P. Kapłański
  • W. Pokrzywnicki

  - Przedsiębiorstwo we współczesnej gospodarce - teoria i praktyka - Rok 2015

  Celem artykułu jest prezentacja wyników badań nad opracowaniem metody implementowania procesów biznesowych w systemach Smart Cities. Metoda została opracowana w trakcie badań prowadzonych w ramach budowy systemu Smart Cities dla Gdańska bazuje na podstawowych mechanizmach zarządzania projektami wytwórczymi (czerpiąc z dobrych praktyk m.in. metodyki RUP) oraz zasadach biznesowo zorientowanego wytwarzania, gdzie rola modelowania...

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• THEORETICAL AND EXPERIMENTAL INVESTIGATION OF THIN-WALLED BEARING SHELL’S DESIGN PARAMETERS AND ASSEMBLY CONDITIONS ON THE HOLDING TORQUE INSIDE A HOUSING BORE OF A CONNECTING ROD

  Publikacja

  • T. Żochowski
  • A. Olszewski

  - TRIBOLOGIA - Rok 2019

  The aim of the work was the experimental and theoretical evaluation of the influence of the most important parameters determining the holding torque of a thin-walled bearing shell inside a housing bore of a connecting rod. The main investigated parameters were defned by authors experience in this feld. In the frst stage of research, a special test stand was designed in order to allow measuring the real values of the friction torque...

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• Język UML 2.0 w modelowaniu systemów informatycznych

  Publikacja

  • S. Wrycza
  • B. Marcinkowski
  • K. Wyrzykowski

  - Rok 2005

  Książka ''Język UML 2.0 w modelowaniu systemów informatycznych'' to szczegółowy opis najnowszej specyfikacji tego języka w kontekście zastosowania go w procesie wytwarzania oprogramowania. Zawiera omówienie elementów języka UML oraz zasad projektowania obiektowego. Przedstawia zastosowanie diagramów UML 2.0 oraz różnice pomiędzy modelowaniem analitycznym i biznesowym. Ponadto wyjaśnia podstawy metodyki RUP oraz prezentuje wybrane...

• Minimization of a ship's magnetic signature under external field conditions using a multi-dipole model

  Publikacja

  • M. Wołoszyn
  • J. Tarnawski

  - Scientific Reports - Rok 2024

  The paper addresses the innovative issue of minimizing the ship's magnetic signature under any external field conditions, i.e., for arbitrary values of ambient field modulus and magnetic inclination. Varying values of the external field, depending on the current geographical location, affect only the induced part of ship's magnetization. A practical problem in minimizing the ship signature is separating permanent magnetization...

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• On design and analysis of flow characteristics of the last stage of gas-steam turbine

  Publikacja

  • S. Głuch
  • P. Ziółkowski
  • Ł. Witanowski
  • M. Stjanke
  • P. J. Ziółkowski
  • J. Badur

  - Rok 2020

  Research regarding blade design and analysis of flow have been conducted for over a century. Meanwhile new concepts and design approaches were created and improved. Advancements in information technologies allowed to introduce computational fluid dynamics (CFD) and computational flow mechanics (CFM). Currently a combination of mentioned methods is used for design of turbine blades. These methods enabled us to improve flow efficiency...

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• Przekształtnik prądu jako sterownik w układach napędowych z silnikami indukcyjnymi

  Publikacja

  • M. Morawiec

  - Maszyny Elektryczne : zeszyty problemowe - Rok 2008

  The circuits used for power conversion applied in drives with electric machines are classified into two groups: voltage source inverters (VSI) and current source inverters (CSI). Application of the current source inverter results in better properties of drive than application of voltage source inverter because there is no output filter. The development of power electronics and especially the IGBTs, in which on/off-times are very...

• Method of earth fault loop impedance measurement without nuisance tripping of RCDs in 3-phase low-voltage circuits

  Publikacja

  • S. Czapp

  - Metrology and Measurement Systems - Rok 2019

  Verification of electrical safety in low-voltage power systems includes the measurement of earth fault loop impedance. This measurement is performed to verify the effectiveness of protection against indirect contact. The widespread classic methods and meters use a relatively high value of the measuring current (5–20) A, so that they are a source of nuisance tripping of residual current devices (RCDs). The meters dedicated to circuits...

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• Design and characterization of apatite La9.8Si5.7Mg0.3O26±δ-based micro-tubular solid oxide fuel cells

  Publikacja

  • S. Wang
  • Y. Hsu
  • P. Hsia
  • W. Hung
  • P. Jasiński

  - JOURNAL OF POWER SOURCES - Rok 2020

  In this study, electrolyte-supported (Cell A) and anode-supported (Cell B) micro-tubular solid oxide fuel cells (SOFCs) based on the La9.8Si5.7Mg0.3O26±δ (LSMO) electrolyte is built through an extrusion and dip-coating processes. The formulations and process conditions for these cells are established and optimized. Both cell configurations show no visible delamination or cracking, and reaction zones and inter-diffusion of any species...

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• Insight into the microstructural and durability characteristics of 3D printed concrete: Cast versus printed specimens

  Publikacja

  • P. Sikora
  • M. Techman
  • A. M. El-Khayatt
  • H. Saudi
  • M. Abd Elrahman
  • M. P. Hoffmann
  • D. Stephan
  • S. Chung
  • K. Federowicz

  - Case Studies in Construction Materials - Rok 2022

  This study presents the comparison of microstructural and durability characteristics of 3D printed concrete (3DPC) depending on its production method (printing or casting). Printed samples with different numbers of layers, as well as a cast specimen with an identical mix composition, were produced and compared, with their microstructural pore and solid characteristics quantitatively and qualitatively investigated. For this purpose,...

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• Review of methods for assessing traffic conditions on basic motorway and expressway sections

  Publikacja

  • A. Romanowska
  • K. Jamroz
  • P. Olszewski

  - Archives of Transport - Rok 2019

  Motorways and expressways are the core of each country’s road system. Road planning, design and management requires tools to ensure that roads have the right geometry, traffic layout and equipment. These include methods for capacity estimation and assessing traffic conditions. Because the paper focusses on the basic segments of motorways and expressways (sections located between interchanges and outside of their influence), its...

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• New pathways for functionalization of phosphorus ligands

  Publikacja

  • A. Ordyszewska

  - Rok 2020

  The presented dissertation consistsof two main partsand focuses on the synthesis and characterization of new low-valent phosphorus compounds. Thesestudies have already been fully described in three JCR-journals. The first partdescribes the utilization ofselectedphosphanylphosphinidene transition metal complexes as a source of diversified phosphorus ligands. For thispurposethree complexes...

• Molecularly imprinted polymers for the detection of volatile biomarkers

  Publikacja

  • T. Wasilewski
  • S. Orbay
  • N. F. Brito
  • K. Sikora
  • A. C. A. Melo
  • M. E. Melendez
  • B. Szulczyński
  • A. Sanyal
  • W. Kamysz
  • J. Gębicki

  - TRAC-TRENDS IN ANALYTICAL CHEMISTRY - Rok 2024

  In the field of cancer detection, the development of affordable, quick, and user-friendly sensors capable of detecting various cancer biomarkers, including those for lung cancer (LC), holds utmost significance. Sensors are expected to play a crucial role in the early-stage diagnosis of various diseases. Among the range of options, sensors emerge as particularly appealing for the diagnosis of various diseases, owing to their cost-effectiveness,...

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