Search results for: PRZECIWDZIAŁANIE IED

• Cavity-QED tests of representations of canonical commutation relations employed in field quantization

  Publication

  • M. Czachor
  • M. Wilczewski

  - INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS - Year 2007

  Dane eksperymentalne dotyczące oscylacji Rabiego porównano z opisem teoretycznym w ramach alternatywnych sformułowań elektrodynamiki kwantowej. Okazało się, iż eksperyment nie jest w stanie rozróżnić opisu standardowego od nowego sformułowania opartego o redukowalne reprezentacje CCR. Zaproponowano nowy eksperyment, którego wynik mógłby być rozstrzygający.

  Full text available to download

• Drgania mechaniczne. Rozwiązywanie zagadnień z MATHCAD-em. Red. E. Kiliś.

  Publication

  • T. Kucharski

  - Year 2004

  Autor niniejszej książki proponuje inny, nowoczesny sposób studiowania drgań mechanicznych, który charakteryzuje się poznawaniem teorii wraz z jednoczesnym wdrażaniem jej do analizy własności dynamicznych układów mechanicznych. Stosuje do tego celu wspomaganie komputerowe za pomocą bardzo rozpowszechnionego i łatwego w użyciu programu MATHCAD. Wyjaśnia naturę zjawiska drgań mechanicznych i jego znaczenie w technice oraz wpływ na...

• Fault-tolerant performance of the novel five-phase doubly-fed induction generator

  Publication

  • R. Ryndzionek
  • K. Blecharz
  • F. Kutt
  • M. Michna
  • G. A. Kostro

  - IEEE Access - Year 2022

  The article presents the concept of a new design of a multi-phase doubly-fed induction generator (DFIG). The innovative design approach uses a five-phase power supply from the rotor side of the generator with a three-phase classic stator power supply. Modern three-phase doubly-fed induction generators are the dominant choice for Wind Energy Conversion Systems (WECS). Solutions of this type are sensitive to the loss of at least...

  Full text available to download

• Mechanika ogólna. Rozwiązywanie zagadnień z MATHCAD-em. Red. E. Kiliś.

  Publication

  • T. Kucharski

  - Year 2002

  Przedstawiono rozwiązywanie zadań z mechaniki ogólnej za pomocą programu MATHCAD. Zaprezentowano wykorzystanie możliwości tego programu zarówno w zakresie przekształceń symbolicznych i obliczeń numerycznych, jak i wizualizacji graficznych. W części pierwszej opisano program MATHCAD, kładąc akcent na te jego funkcje, które mogą być przydatne w rozwiązywaniu zadań z mechaniki ogólnej. Część druga zawiera przykłady zadań...

• KUHLMAN U. (red.): Stahlbau Kalender 2009 (Kalendarz budownictwa stalowego 2009)

  Publication

  • Z. Cywiński

  - Inżynieria i Budownictwo - Year 2010

• FINITE GROUND CPW-FED UWB ANTENNA OVER THE METALLIC CYLINDRICAL SURFACES

  Publication

  • R. Lech
  • W. Marynowski
  • A. Kusiek

  - Progress in Electromagnetics Research-PIER - Year 2013

  The investigation of finite ground coplanar fed ultra-wideband (UWB) antenna and the influence of its curvature and the proximity of circular metallic screen on the reflection coefficients and radiation characteristics is presented. The antenna is composed of two circular coplanar strips which enclose slot aperture of similar shape and is designed on a thin and flexible substrate which allows its bending. The antenna configuration...

  Full text to download in external service

• Numerical and experimental investigation of rotational stiffness of zed-purlins connection with sandwich panels

  Publication

  • M. Kujawa
  • C. K. Szymczak

  - THIN-WALLED STRUCTURES - Year 2014

  A rotational resistant stiffness of the zed-purlins connection with sandwich panels is investigated. A simple finite element method model of the connection is proposed. The numerical analysis of the model performed by ABAQUS software, in physically linear and geometrically nonlinear ranges, leads to the rotational resistant stiffness sought. The numerical solution obtained is verified experimentally. Two variants of distribution...

  Full text to download in external service

• Possible effects of the 1984 St. Clair River ice jam on bed changes

  Publication

  • T. Kolerski
  • H. T. Shen

  - CANADIAN JOURNAL OF CIVIL ENGINEERING - Year 2015

  This study examines the possible effect of the record ice jam of 1984 in the St. Clair River on river bed changes and conveyance. Numerical simulations were made to examine the flow and bed shear stresses during the jam formation and release periods. Simulation results indicate that the ice jam in the river did not cause a significant increase in bed shear stress compared to pre- and post-jam open water conditions. The insignificant...

  Full text available to download

• Coplanar Waveguide Fed Ultra-Wideband Antenna Over the Planar and Cylindrical Surfaces

  Publication

  • R. Lech
  • W. Marynowski
  • A. Kusiek

  - Year 2014

  The investigation of coplanar waveguide fed ultra-wideband antenna and the influence of the proximity of different materials on the reflection coefficients and radiation character-istics is presented. The antenna is composed of two circular coplanar strips which enclose slot aperture of similar shape and is designed on a thin and flexible substrate. From the modeling and experimental tests the antenna shows good performance in...

• Noninvasive method for rotor fault diagnosis in inverter fed induction motor drive

  Publication

  • P. Kołodziejek

  - Year 2013

  This article presents a proposal, simulation and experimental results of a noninvasive rotor fault diagnosis method for the inverter fed induction motor drive. Comparing to reported methods the proposed one does not require any load, rotor brake, slip, mechanical or electrical system physical modification e.g. machine disassembly and can be applied regardless the rotor speed measurement or estimation method.

• Motor Cable Effect on the Converter Fed AC Motor Common Mode Current

  Publication

  • J. Łuszcz

  - Przegląd Elektrotechniczny - Year 2012

  Analiza zaburzeń elektromagnetycznych przewodzonych w przekształtnikowych układach napędowych wymaga uwzględniania pojemności pasożytniczych występujących w przekształtniku, uzwojeniach silnika oraz kablu zasilającym silnik. Dynamiczne zmiany napięć na uzwojeniach silników zasilanych z przekształtników częstotliwości PWM oraz związane bezpośrednio z nimi składowe wspólne prądów zaburzeń przewodzonych są istotnie związane z zjawiskami...

  Full text available to download

• Niezawodność komunikacji zgodnej z IEC 61850 w elektroenergetycznych sieciach inteligentnych

  Publication

  • D. Karkosiński

  - Year 2012

  Funkcjonowanie sieci inteligentnych wymaga kompatybilnych i niezawodnych platform komunikacyjnych na poziomie przemysłowych wytwórców, operatorów sieci przesyłowych oraz rozproszonych konsumentów i wytwórców energii. Przedłużające się prace nad standaryzacją w tym zakresie opóźniają wytwarzanie komponentów sieci inteligentnych. Tymczasem w niektórych krajach normę IEC 61850 traktuje się jako dotyczącą właśnie sieci inteligentnych....

• Effects of artificial lighting on bioactivity of sweet red pepper (Capsicum annuum L.)

  Publication

  • J. Bae
  • Y. S. Park
  • J. Namieśnik
  • G. Ilhami
  • T. Kim
  • H. Kim
  • B. Heo
  • S. Gorinstein
  • Y. Ku

  - INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY - Year 2016

  Recent studies have shown that artificial light effectively promotes the growth and development of red peppers when light spectra, intensities and duration are controlled. Cited reports deal mostly with studies involving with the growth stages of pepper. Changes in the biochemical status of plants were not studied. Therefore, this study focuses on the changes in the content of some bioactive compounds (polyphenols, flavonoids,...

  Full text to download in external service

• Współczesne trendy oświetleniowe w miastach. Oświetlenie LED nr 1/2016

  Publication

  • N. Sokół
  • J. Martyniuk-Pęczek

  - Oświetlenie LED - Year 2016

  Artykuł obejmuje wybrane zagadnienia dotyczące projektowania zewnętrznych form świetlnych we współczesnej tkance miejskiej na przestrzeni wieków. Autorki przedstawiły ewolucje idei i formy miejskiej oprawy oświetleniowej w kontekście jej użyteczności świetlnej, kreowania wyjątkowego znaku przestrzennego, rozwoju współczesnych technologii i wpisania światła w przemiany współczesnego miasta.

  Full text to download in external service

• KONCEPCJE SYSTEMÓW MODUŁOWEGO ZASILANIA NA PRZYKŁADACH UKŁADÓW ZASILANIA LATAREK LED

  Publication

  • B. Hejke
  • S. Jesionek
  • A. Szewczyk
  • S. Galla

  - Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej - Year 2017

  W referacie przedstawiono rozwiązania systemów zasilania do zastosowania w modułowych latarkach LED pozwalające na optymalizację zużycia energii, a tym samym wydłużenie czasu ich pracy. Przedstawiono podstawowe wymagania stawiane układom zasilania stosowanym w powyższych rozwiązaniach oraz przedstawiono dwie zrealizowane koncepcje ich wykonania. Na wykonanych prototypach układów przeprowadzono pomiary a uzyskane wyniki zostały...

  Full text available to download

• Manufacturing Data Analysis in Internet of Things/Internet of Data (IoT/IoD) Scenario

  Publication

  • E. Szczerbicki
  • S. I. Shafiq
  • C. Sanin

  - CYBERNETICS AND SYSTEMS - Year 2018

  Computer integrated manufacturing (CIM) has enormous benefits as it increases the rate of production, reduces errors and production waste, and streamlines manufacturing sub-systems. However, there are some new challenges related to CIM operating in the Internet of Things/Internet of Data (IoT/IoD) scenarios associated with Industry 4.0 and cyber-physical systems. The main challenge is to deal with the massive volume of data flowing...

  Full text available to download

• Size-Reduction-Oriented Design of Compact CPW-Fed UWB Monopole Antenna

  Publication

  • S. Kozieł
  • A. Bekasiewicz

  - Year 2016

  A structure and design optimization of compact CPW-fed UWB monopole antenna is presented. Explicit size reduction through constrained numerical optimization of all relevant geometry parameters of the structure leads to a very small footprint of only 321 mm2. At the same time, a very wide antenna bandwidth is achieved from 3.1 GHz to 17 GHz.

  Full text to download in external service

• The application of moving bed biofilm reactor to denitrification process after trickling filters

  Publication

  • Ł. Kopeć
  • J. Drewnowski
  • A. Kopeć

  - WATER SCIENCE AND TECHNOLOGY - Year 2016

  The paper presents research of a prototype moving bed biofilm reactor (MBBR). The device was used for the post-denitrification process and was installed at the end of a technological system consisting of a septic tank and two trickling filters. The concentrations of suspended biomass and biomass attached on the EvU Perl moving bed surface were determined. The impact of the external organic carbon concentration on the denitrification...

  Full text to download in external service

• FLUID BED COATING OF MINITABLETS AND PELLETS WITH OPTIMIZATION OF THE PROCESS BASED ON TAGUCHI METHOD

  Publication

  • T. Magdalena
  • B. Kawalec-Pietrenko
  • M. Sznitowska
  • P. Rybarczyk

  - Acta Poloniae Pharmaceutica - Drug Research - Year 2020

  Small particles like pellets are coated in fluid bed systems. This method can be also feasible for minitablets but the selection of optimal process parameters is complicated. The aim of the research was to optimize the coating process for minitablets and to compare the conditions required for pellets. Minimum fluidization velocities (umf) for 2.0 and 2.5 mm minitablets and 0.7-0.8 mm or 1.0-1.25 mm pellets were determined experimentally....

  Full text available to download

• Real-time hybrid model of a wind turbine with doubly fed induction generator

  Publication

  • R. Rink
  • R. Małkowski

  - Year 2019

  In recent years renewable sources have been dominating power system. The share of wind power in energy production increases year by year, which meets the need to protect the environment. Possibility of conducting, not only computer simulation, but also laboratory studies of wind turbine operation and impact on the power system and other power devices in laboratory conditions would be very useful. This article presents a method...

  Full text available to download

• Design advantages and analysis of a novel five-phase doubly-fed induction generator

  Publication

  • R. Ryndzionek
  • M. Michna
  • F. Kutt
  • G. A. Kostro
  • K. Blecharz

  - COMPEL-THE INTERNATIONAL JOURNAL FOR COMPUTATION AND MATHEMATICS IN ELECTRICAL AND ELECTRONIC ENGINEERING - Year 2023

  Purpose – The purpose of this paper is to provide an analysis of the performance of a new five-phase doubly fed induction generator (DFIG). Design/methodology/approach – This paper presents the results of a research work related to fivephase DFIG framing, including the development of an analytical model, FEM analysis as well as the results of laboratory tests of the prototype. The proposed behavioral level analytical model is based...

  Full text available to download

• The impact of cold plasma on the phenolic composition and biogenic amine content of red wine

  Publication

  • I. Niedźwiedź
  • J. Płotka-Wasylka
  • I. Kapusta
  • V. Simeonov
  • A. Stój
  • A. Waśko
  • J. Pawłat
  • M. Polak-Berecka

  - FOOD CHEMISTRY - Year 2022

  The effect of cold plasma (CP) on phenolic compound (PC) and biogenic amine (BA) contents of red wine was investigated for the first time. The influence of CP was compared with the effects of a wine preservation using potassium metabisulfite and a combined method. The PC profile was determined by UPLC-PDA-MS/MS while BAs using DLLME-GC–MS. Chemometric analysis also was used. The content of PCs was 3.1% higher in the sample preserved...

  Full text available to download

• Fault Loop Impedance Measurement in Circuits Fed by UPS and Principle of Safety Protection

  Publication

  • J. Katarzyński
  • M. Olesz

  - Sustainability - Year 2020

  This paper indicates a significant problem of uncertainty of fault loop impedance (FLI) measurement in circuits powered from uninterruptible power supply (UPS) (double-conversion AC-DC-AC). The correctly determined value of this impedance, related to the short-circuit current disconnection time and to the reference value, is one of the most important elements that determines the approval of an electrical installation and its receivers...

  Full text available to download

• Assessment of diversity and composition of bacterial community in Sludge Treatment Reed Bed systems

  Publication

  • P. Kowal
  • S. Ciesielski
  • M. Godzieba
  • K. Fitobór
  • M. Gajewska
  • K. Kołecka

  - SCIENCE OF THE TOTAL ENVIRONMENT - Year 2021

  Due to their low emission of odours and lack of the need to apply additional chemical agents, sludge treatment reed beds (STRBs) constitute an economically feasible and eco-friendly approach to sewage sludge management. Correctly designed and operated STRBs ensure effective reduction of the dry matter content coupled with the mineralisation of organic compounds. Successful operation of STRBs relies on complex interactions between...

  Full text available to download

• Potentiometric sensor with lipid-polymer membranes for quality assessment of French red wines

  Publication

  • E. Brodnicka
  • M. Szpakowska

  - Desalination and Water Treatment - Year 2021

  The quality of wines resulting from vineyard management is important for consumers due to the taste and price of wines. In this work, the quality of red wines of three vintages has been investigated by potentiometric sensors with six all-solid-state electrodes. Two series of experiments were carried out. The first involved a qualitative analysis of wine of different vintages from freshly opened bottles. The second consisted of...

  Full text to download in external service

• IET Radar Sonar and Navigation

  Journals

  ISSN: 1751-8784 , eISSN: 1751-8792

• IEE PROCEEDINGS-RADAR SONAR AND NAVIGATION

  Journals

  ISSN: 1350-2395

• Aestimatio-The IEB International Journal of Finance

  Journals

  ISSN: 2173-0164 , eISSN: 2173-1926

• Led i Sneg-Ice and Snow

  Journals

  ISSN: 2076-6734 , eISSN: 2412-3765

• Iranian Red Crescent Medical Journal

  Journals

  ISSN: 2074-1804 , eISSN: 2074-1812

• IEE PROCEEDINGS-ELECTRIC POWER APPLICATIONS

  Journals

  ISSN: 1350-2352

• IEE PROCEEDINGS-COMPUTERS AND DIGITAL TECHNIQUES

  Journals

  ISSN: 1350-2387

• IEE PROCEEDINGS-GENERATION TRANSMISSION AND DISTRIBUTION

  Journals

  ISSN: 1350-2360

• IEE PROCEEDINGS-CIRCUITS DEVICES AND SYSTEMS

  Journals

  ISSN: 1350-2409

• RED-Revista de Educacion a Distancia

  Journals

  ISSN: 1578-7680

• Gastroenterology and Hepatology from Bed to Bench

  Journals

  ISSN: 2008-2258

• RED-Revista Electronica de Direito

  Journals

  ISSN: 2182-9845

• Medecine et Chirurgie du Pied

  Journals

  ISSN: 0759-2280

• ACS Bio and Med Chem Au

  Journals

  eISSN: 2694-2437

• Iranian Red Crescent Medical Journal

  Journals

  ISSN: 1561-4395

• Urządzenie do wytwarzania kurtyny elektromagnetycznej na lotniskach

  Publication

  • R. Katulski
  • J. Stefański
  • J. Sadowski
  • S. J. Ambroziak

  - Year 2012

  Przedmiotem referatu jest urządzenie - docelowo przenośne - do wytwarzania kurtyny elektromagnetycznej na ograniczonym i wydzielonym obszarze, np. w warunkach pracy portu lotniczego, do ochrony przed prowizorycznym ładunkami wybuchowymi (IED). Prototyp tego urządzenia zbudowany zostanie w oparciu o opracowany w Politechnice Gdańskiej demonstrator technologiczny systemu AE-GIS, przeznaczony do przeciwdziałania atakom terrorystycznym...

• A new 1-nitro-9-aminoacridine derivative targeting yeast topoisomerase II able to overcome fluconazole-resistance

  Publication

  • K. Rząd
  • E. Paluszkiewicz
  • I. Gabriel

  - BIOORGANIC & MEDICINAL CHEMISTRY LETTERS - Year 2021

  Fungal resistance remains a significant threat and a leading cause of death worldwide. Thus, overcoming microbial infections have again become a serious clinical problem. Although acridine derivatives are widely analyzed as anticancer agents, only a few reports have demonstrated their antifungal activity. In an effort to develop biologically active antifungals, twelve novel C-857 (9-(2′ -hydroxyethylamino)-1-nitroacridine) and...

  Full text to download in external service

• The application of Monod equation to denitrification kinetics description in the moving bed biofilm reactor (MBBR)

  Publication

  • L. Kopec
  • A. Kopec
  • J. Drewnowski

  - International Journal of Environmental Science and Technology - Year 2019

  In this paper, the kinetic constants Vmax and KCOD occurring in the Monod equation, which describe the denitrification process in the moving bed, are determined. For this purpose, a laboratory moving bed biofilm reactor (MBBR) was used. The filling of the reactor consisted of EvU Perl carriers. The experiment was carried out with an excess of nitrate, and denitrification rate was dependent on the concentration of external organic...

  Full text available to download

• Cascaded doubly fed induction generator for mini and micro power plants connected to grid

  Publication

  • M. Adamowicz
  • R. Strzelecki

  - Year 2008

  Full text to download in external service

• Spectroscopic Signature of Red Blood Cells in a D-Galactose-Induced Accelerated Aging Model

  Publication

  • A. Blat
  • T. Stepanenko
  • K. Bulat
  • A. Wajda
  • J. Dybas
  • T. Mohaissen
  • F. Alcicek
  • E. Szczesny-Malysiak
  • K. Malek
  • A. Fedorowicz
  • K. Marzec

  - International Journal of Molecular Sciences - Year 2021

  Full text to download in external service

• The effect of fixed adsorption bed height on adsorption of gaseous mixture of volatile organic compounds

  Publication

  • M. M. Jurkiewicz
  • M. Musik
  • R. Pełech

  - Chemical and Process Engineering - Year 2023

  Full text to download in external service

• Variability in feeding habitats of red deer sensu lato in Eurasia in the Late Pleistocene and Holocene

  Publication

  • M. Sykut
  • S. Pawełczyk
  • N. Piotrowska
  • K. Stefaniak
  • B. Ridush
  • D. Makowiecki
  • P. Kosintsev
  • B. Wilkens
  • T. Borowik
  • R. Fyfe... and 2 others

  - Journal of Archaeological Science - Year 2023

  Full text to download in external service

• Does the decline of red wood ants after clear-cutting favour epigeic arthropods?

  Publication

  • M. Zmihorski

  - EUROPEAN JOURNAL OF ENTOMOLOGY - Year 2011

  Full text to download in external service

• Ability of Yeast Metabolic Activity to Reduce Sugars and Stabilize Betalains in Red Beet Juice

  Publication

  • D. Dygas
  • S. Nowak
  • J. Olszewska
  • M. Szymańska
  • M. Mroczyńska-Florczak
  • J. Berłowska
  • P. Dziugan
  • D. Kręgiel

  - Fermentation - Year 2021

  Full text to download in external service

• Photocatalytic degradation of volatile and non volatile organics on titanium dioxyde particles in fluidized bed.

  Publication

  • H. Kumazawa
  • B. Kawalec-Pietrenko

  - Inżynieria i Aparatura Chemiczna - Year 2003

  Przeprowadzono degradację metyloetyloketonu w obecności dwutlenku tytanu jako fotokatalizatora. Badano wpływ początkowego stężenia substancji i stężenia fotokatalizatora na szybkość fotokatalitycznego rozkładu.