Search results for: ELECTRICAL

• Electrical properties of nanocrystalline Sm-doped ceria ceramics

  Publication

  • P. Jasiński

  - SOLID STATE IONICS - Year 2006

  Właściwości ceramiki z cerii zależa zwykle silnie od struktury ziaren. W pracy przedstawiono właściwości elektryczne ceramiki z cerii domieszkowanej samarem wykonanje w technologii 'net shape' posiadającej strukturę nanokrystaliczną.

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• Price Changes in Wholesale Market of Electrical Energy in Poland

  Publication

  • P. Bućko
  • I. Prażuch

  - Automatyka Elektryka Zakłócenia - Year 2022

  The article discusses the Price changes on the wholesale electricity market in Poland Moreover, The price levels on the futures electricity markets and the spot transactions market are presented. The impact of emission charges under the EU ETS on the price of electricity in the domestic market has been taken into consideration Furthermore, the basic determinants of the generation structure in Poland that influence the level of...

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• A Thermographic Measurement Approach to Assess Supercapacitor Electrical Performances

  Publication

  • S. Galla

  - Applied Sciences-Basel - Year 2017

  This paper describes a proposal for the qualitative assessment of condition of supercapacitors based on the conducted thermographic measurements. The presented measurement stand was accompanied by the concept of methodology of performing tests. Necessary conditions, which were needed to minimize the influence of disturbing factors on the performance of thermal imaging measurements, were also indicated. Mentioned factors resulted...

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• Praseodymium substituted lanthanum orthoniobate: Electrical and structural properties

  Publication

  • K. Dzierzgowski
  • S. L. Wachowski
  • W. Gojtowska
  • I. Szpunar
  • P. Jasiński
  • M. Gazda
  • A. D. Mielewczyk-Gryń

  - CERAMICS INTERNATIONAL - Year 2018

  The results of ionic transport and structural measurements for the lanthanum orthoniobate doped by praseodymium are presented and discussed. The influence of calcium co-doping on these properties has also been analyzed. The results suggest the predominant protonic conductivity for the investigated system in the whole range of investigated temperatures. The influence of calcium co-doping on phase purity is analyzed.

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• Microstructural and electrical properties of Y0.07Sr0.93-xTiO3-δ perovskite ceramics

  Publication

  • T. Miruszewski
  • B. Bochentyn
  • J. Karczewski
  • M. Gazda
  • B. Kusz

  - CENTRAL EUROPEAN JOURNAL OF PHYSICS - Year 2012

  In order to find a relationship between electrical and microstructural properties, yttrium-doped strontiumtitanate (7 mol%) with various values of strontium nonstoichiometry was investigated and shown in this work.It has been observed that yttrium doping can affect the electrical properties of SrTiO3 to a great extent.Moreover, the microstructural and electrical properties can be influenced by strontium nonstoichiometry.The defect...

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• A method of determination of electrical conduction mechanisms in complex amorphous materials

  Publication

  • P. Kupracz
  • N. A. Wójcik
  • R. J. Barczyński

  - JOURNAL OF NON-CRYSTALLINE SOLIDS - Year 2018

  A novel approach to determine conduction mechanisms in complex amorphous materials was presented and tested on a real system. In the first step of the presented method, total electrical admittance of the material is analyzed in order to separate a couple of processes, each of which can be described by Jonscher's universal dielectric response. In the following step, a temperature dependence of dielectric response parameters of the...

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• Human memory enhancement through electrical stimulation in the temporal cortex

  Publication

  • M. T. Kucewicz
  • B. M. Berry
  • L. R. Miller
  • F. Khadjevand
  • Y. Ezzyat
  • J. M. Stein
  • V. Kremen
  • B. H. Brinkmann
  • P. Wanda
  • M. R. Sperling... and 10 others

  - Brain: A Journal of Neurology - Year 2018

  Direct electrical stimulation of the human brain can elicit sensory and motor perceptions as well as recall of memories. Stimulating higher order association areas of the lateral temporal cortex in particular was reported to activate visual and auditory memory representations of past experiences (Penfield and Perot, 1963). We hypothesized that this effect could be used to modulate memory processing. Recent attempts at memory enhancement...

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• Electrical properties of organic and perovskite systems used in solar cells

  Publication

  • D. Głowienka

  - Year 2019

  Nowadays, a great progress in the areas of molecular and hybrid photovoltaics is observed. The devices based on organic and perovskite materials are getting attention mostly due to their low cost production process. However, their efficiency and stability are still lower than for inorganic materials which make them less popular. Therefore, a detailed understanding of the device physics is fundamental for organic and perovskite...

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• Modern power-electronics installations in the Polish electrical power network

  Publication

  • G. Benysek
  • R. Strzelecki

  - RENEWABLE & SUSTAINABLE ENERGY REVIEWS - Year 2011

  The paper discusses the most important areas of application of power electronics arrangements in the Polish electrical power system; especially in the distribution system. The examples presented demonstrate both the need for and the purpose of further research and its applications in these fields, as well as indicating the direction of future research, with special consideration given to the research required in Poland. The proposed...

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• Influence of titanium layer on counter electrode on electrical parameters of DSSC

  Publication

  • W. Wachowiak
  • M. Klein
  • Ł. Skowroński

  - Zeszyty Naukowe. Elektrotechnika / Uniwersytet Technologiczno-Przyrodniczy - Year 2014

  In this paper the influence of the Ti layer thickness at counter-electrode on electrical parameters of DSSCs was examined. The transparent conductive oxide – less (TCO-less) counter electrodes (CE) with titanium layers and platinum as catalyst on Bk7 glass were prepared. Thin metallic films were deposited by means of magnetron sputtering (titanium) and Pulsed Laser Deposition (platinum). The counter electrode with Pt layer on Fluorine...

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• Electrochemical Activity and Electrical Properties of Optimized Polypyrrole Coatings on Iron

  Publication

  • K. Cysewska
  • S. Virtanen
  • P. Jasiński

  - JOURNAL OF THE ELECTROCHEMICAL SOCIETY - Year 2015

  In this work, electrochemical activity and electrical properties of polypyrrole (PPy) coated iron electrodes have been investigated. PPy film was electrochemically polymerized from sodium salicylate aqueous solution under conditions, which provided an increase of iron corrosion resistance. It was noticed that the pH of the solution and the applied electrode potential range during the study of the polymer properties had an influence...

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• Multi-Agent Signal Filtering for Electrical Energy Demand Management

  Publication

  • A. Opaliński

  - Year 2015

  Consumers participating in electrical energy Demand Response (DR) programs may be exposed to energy-use related decisions at instants of time which are generally hard to predict. This is especially cumbersome to residential consumers who are less capable of investing in special equipment, or devoting significant time to analyze information and take decisions. To ease residential consumer participation, a multi-agent system proposed...

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• Compressive Sensing Approach to Harmonics Detection in the Ship Electrical Network

  Publication

  • B. Pałczyńska
  • R. Maśnicki
  • J. Mindykowski

  - SENSORS - Year 2020

  The contribution of this paper is to show the opportunities for using the compressive sensing (CS) technique for detecting harmonics in a frequency sparse signal. The signal in a ship’s electrical network, polluted by harmonic distortions, can be modeled as a superposition of a small number of sinusoids and the discrete Fourier transform (DFT) basis forms its sparse domain. According to the theory of CS, a signal may be reconstructed...

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• Electrical properties of poros nanocrystalline undoped ceria oxygen sensor

  Publication

  • S. Molin
  • M. Gazda
  • P. Jasiński
  • A. Z. Nowakowski

  - Elektronika : konstrukcje, technologie, zastosowania - Year 2008

  W pracy zaprezentowano wykonanie czujnika z niedomieszkowanego tlenku ceru o nanometrowych ziarnach krystalicznych. Zastosowana metoda nanoszenia warstw zalicza się do metod niskotemperaturowych. Wytworzone warstwy przebadano za pomocą dyfrakcji rentgenowskiej, mikroskopii elektronowej oraz spektroskopii impedancyjnej. Wykonane czujniki charakteryzują się szybkim czasem odpowiedzi i stabilnym zachowaniem przy zmianach ciśnienia...

• Modelling of energy flow in electrical machines. A bond graph approach

  Publication

  • M. Ronkowski

  - Prace Naukowe Instytutu Maszyn, Napędów i Pomiarów Elektrycznych Politechniki Wrocławskiej. Studia i Materiały - Year 2008

  Przedstawiono w ujęcia grafów wiązań model przepływu energii/mocy w maszynach elektrycznych pracujących w hybrydowych systemach przetwarzania energii. Jako przykład do rozważań przyjęto system napędu trakcyjnego pojazdów hybrydowych.

• Thermal Transitions in P3HT:PC60BM Films Based on Electrical Resistance Measurements

  Publication

  • B. Hajduk
  • H. Bednarski
  • M. Domański
  • B. Jarząbek
  • B. Trzebicka

  - Polymers - Year 2020

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• Instantaneous impedance spectra of a non-stationary model electrical system

  Publication

  • K. Darowicki
  • J. Orlikowski
  • G. Lentka
  • K. Darowicki

  - JOURNAL OF ELECTROANALYTICAL CHEMISTRY - Year 2000

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• Influence of electropolymerization conditions on the morphological and electrical properties of PEDOT film

  Publication

  • K. Cysewska
  • J. Karczewski
  • P. Jasiński

  - ELECTROCHIMICA ACTA - Year 2015

  In this work the effects of electropolymerization conditions on the morphological properties and conductivity of poly(3,4-ethylenedioxythiophene) (PEDOT) film have been studied. PEDOT films were electrochemically synthesized in a one step process from acetonitrile solution containing 3,4-ethylenedioxythiophene (EDOT) and lithium perchlorate. Based on atomic force microscopy, scanning electron microscopy, cyclic voltammetry and...

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• Thermal and Electrical Characterization of the Carbon Nanofibers Based Cement Composites

  Publication

  • A. ŚLOSARCZYK
  • W. Pichór
  • M. FRĄC

  - Materials Science-Medziagotyra - Year 2017

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• 2D Mathematical Model of the Commutator Sliding Contact of an Electrical Machine

  Publication

  • A. Wilk
  • I. Mosoń

  - Year 2006

  W artykule przedstawiono model matematyczny 2D komutatorowego zestyku ślizgowego z wieloma stopniami swobody. W modelu uwzględniono zmienne wymuszenia działające na szczotkę. Wymuszenia te są wynikiem falistości wirującego komutatora. Szczotka została zamodelowana jako system wielu mas, elementów sprężystych i tłumików rozłożonych w kierunku stycznym i promieniowym. Zamodelowano wszystkie oddziaływania lepkosprężyste pomiędzy komutatorem...

• Electrical capacitance tomography for studying the flow of friable materials in silos.

  Publication

  • Z. Chaniecki
  • T. Dyakowski
  • M. Niedostatkiewicz
  • A. Pląskowski
  • D. Sankowski
  • W. Smolik
  • R. Szabatin

  - Year 2004

  Artykuł opisuje możliwość aplikacji tomografii do pomiarów przepływu materiałów sypkich w silosach

• Electrical conductivity of nanocrystalline Sm-doped CeO2 thin film.

  Publication

  • T. Suzuki
  • P. Jasiński
  • H. U. Anderson

  - Year 2004

  Gęste i nanokrystaliczne filmy tlenku ceru domieszkowane 20% samarem przygotowane na szafirze oraz próbki ceramiczne zostały przygotowane z prekursorów polimerowych. Ich konduktacja elektryczna była badana w funkcji temperatury i skorelowana z wielkością krystalitów. Model blokowo-warstwowy przewiduje mniejszą konduktacje próbki gdy wielkości krystalitów są mniejsze, w przypadku gdy rezystancja obszarów międzyziarnowych jest większa...

• Application of residual current devices in electrical installations with frequency converters

  Publication

  • S. Czapp

  - Year 2005

  W instalacjach elektrycznych, w których znajdują się przemienniki częstotliwości mogą pojawić się prądy zwarcia doziemnego o różnej częstotliwości lub stałe. Większość wyłączników różnicowoprądowych nie reaguje na tego typu prądy, co powoduje, że ochrona przeciwporażeniowa jest nieskuteczna. W obwodach z przemiennikami częstotliwości mogą pojawiać się przejściowe i ustalone prądy upływowe o znacznych wartościach. Prądy te znacząco...

• Electrical properties of ceria films prepared by net shape technology

  Publication

  • P. Jasiński
  • V. Petrovsky

  - Year 2005

  W pracy przedtswiono procedurę przygotowania gęstych warstw elektrolitu z wykorzystaniem technologii Net Shpe. Technologia ta na znaczne obniżenie temperatury przygotania tego typu warst. Okresloślono parametry elektryczne warst domieszkowanego ceru przygotowanych w tej technologii.

• Demand determination for electrical energy for trailing suction hopper dredgers

  Publication

  • D. Bocheński

  - Year 2005

  Przedstawiono metodę określania obciążeń elektrowni w typowych stanach eksploatacji pogłębiarki ssącej nasiębiernej. Przedstawiono sposób określania średniego zapotrzebowania energii elektrycznej i jego odchylenia standardowego. Wykorzystano dane dokumentacji projektowych 10 pogłębiarek ssących nasiębiernych oraz wyniki badań eksploatacyjnych pogłębiarek zawarte w bazie danych DRAGA.

• Application of percolation theory for description of electrical properties of conducting coatings

  Publication

  • J. Orlikowski

  - Physico-Chemical Mechanics of Materials - Year 2002

  Przedstawiono pomiary elektryczne i elektrochemiczne powłok organicznych przewodzących prąd elektryczny i mogących pełnić rolę anody w systemie ochrony katodowej żelbetonu. Za pomocą pomiarów impedancyjnych dokonano oceny rezystancji powłoki w funkcji zawartości grafitu. Na tej podstawie oszacowano próg perkolacji powłoki epoksydowej domieszkowanej elektrografitem. Ocenę obciążalności prądowej powłok przewodzących dokonano wykonując...

• A Biofeedback System that Uses the Game to Study Electrical Muscle Activity

  Publication

  • P. Troka
  • H. Toczko
  • P. Przystup
  • M. Kaczmarek

  - Year 2018

  The aim of this project was to design a system that will allow performing repetitive muscle exercises using a biofeedback device. It is supposed to enhance the motivation and attractiveness of the performed tasks thanks to an interactive game developed for mobile devices with the Android operating system. The built-in calibration mechanisms enable the users to play a game that is independent of their abilities which evens out the...

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• IET Electrical Systems in Transportation

  Journals

  ISSN: 2042-9738 , eISSN: 2042-9746

• Journal of Electrical and Computer Engineering

  Journals

  ISSN: 2090-0147 , eISSN: 2090-0155

• EUROPEAN TRANSACTIONS ON ELECTRICAL POWER

  Journals

  ISSN: 1430-144X

• Journal of Electronic and Electrical Engineering

  Journals

  ISSN: 0976-8106

• Electrical Control and Communication Engineering

  Journals

  ISSN: 2255-9140 , eISSN: 2255-9159

• International Journal of Electrical Engineering

  Journals

  ISSN: 1812-3031

• Serbian Journal of Electrical Engineering

  Journals

  ISSN: 1451-4869

• Bulletin of Electrical Engineering and Informatics

  Journals

  ISSN: 2089-3191

• Journal of Electrical and Electronics Engineering

  Journals

  ISSN: 1844-6035

• IEEE ELECTRICAL INSULATION MAGAZINE

  Journals

  ISSN: 0883-7554 , eISSN: 1558-4402

• Majlesi Journal of Electrical Engineering

  Journals

  ISSN: 2345-377X

• Transactions on Electrical and Electronic Materials

  Journals

  ISSN: 1229-7607 , eISSN: 2092-7592

• Chinese Journal of Electrical Engineering

  Journals

  ISSN: 2096-1529

• AIMS Electronics and Electrical Engineering

  Journals

  eISSN: 2578-1588

• Jordan Journal of Electrical Engineering

  Journals

  ISSN: 2409-9600

• ELECTRICAL ENGINEERING

  Journals

  ISSN: 0948-7921 , eISSN: 1432-0487

• Microstructural and electrical properties of Y0:07Sr0:93−xTiO3− perovskite ceramics

  Publication

  • T. Miruszewski
  • B. Bochentyn
  • J. Karczewski
  • M. Gazda
  • B. Kusz

  - CENTRAL EUROPEAN JOURNAL OF PHYSICS - Year 2012

  In order to find a relationship between electrical and microstructural properties, yttrium-doped strontium titanate (7 mol%) with various values of strontium nonstoichiometry was investigated and shown in this work. It has been observed that yttrium doping can affect the electrical properties of SrTiO3 to a great extent. Moreover, the microstructural and electrical properties can be influenced by strontium nonstoichiometry. The...

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• Electrical Propterties of Solution Mixtures for Bath Supervision in Ambient Assisted Living

  Publication

  • A. Bujnowski
  • K. Osiński
  • A. Poliński
  • T. Kocejko
  • J. Wtorek
  • A. Andrushevich

  - Year 2018

  Impedance properties of bath solution are compared. Any ingredient such as soap, shampoo or bathing salt changes bath-solution’s electrical properties eg. impedance. We have measured and analysed influence of typical bathing ingredients on electrical properties of the solution. We investigate impedance changes over frequency range from 100Hz tu 100kHz as it is most applicable for person detection. Electrical properties of bath...

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• Control system for contactless electrical energy transfer with varying air gap

  Publication

  • S. Judek

  - Year 2014

  Inductive power transfer (IPT) is a system by which electrical energy may be transmitted without electrical connection through a large air gap between coils. Systems usually considered in the literature are the ones with a constant air gap. The paper describes the analysis of IPT, which allows for supplying an electrical load in the conditions of slow, in relation to the dynamics of power supply, changes in the dimensions of the...

• Reliable renewable energy – application of electrochemical capacitors for electrical energy storage

  Publication

  • A. D. Dettlaff
  • M. Wilamowska-Zawłocka
  • E. Klugmann-Radziemska

  - CHEMIK nauka-technika-rynek - Year 2016

  This paper presents electrical energy storage devices such as electrochemical capacitors, their principle of operation and electrode materials most commonly used in their manufacturing technology. Moreover, our research on development of new nanocomposite materials based on multi-walled carbon nanotubes and conducting polymer is shown. Additionally, the possibility and advantages of application of supercapacitors for accumulation...

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• Electrical properties of Y0.08Sr0.92Ti0.92Nb0.08O3-δ after reduction in different reducing conditions

  Publication

  • J. Karczewski
  • B. Bochentyn
  • S. Molin
  • A. Winiarski
  • M. Gazda
  • P. Jasiński
  • L. Murawski
  • B. Kusz

  - JOURNAL OF ALLOYS AND COMPOUNDS - Year 2009

  Electrical properties of perovskite Y0.08Sr0.92Ti0.92Nb0.08O3−ı after reduction in different conditions were studied. Relatively high electrical conductivity in samples reduced in ammonia was observed. The conductivity of Y0.08Sr0.92Ti0.92Nb0.08O3−ı reduced in ammonia at 1500 ◦C was of about 600 S/cm at 200 ◦C. Conductivity after reduction in ammonia at 1500 ◦C was stable both in hydrogen and oxygen atmosphere up to 600 ◦C. Reduction...

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• Electrical Stimulation Modulates High Gamma Activity and Human Memory Performance

  Publication

  • M. T. Kucewicz

  - eNeuro - Year 2018

  Direct electrical stimulation of the brain has emerged as a powerful treatment for multiple neurological diseases, and as a potential technique to enhance human cognition. Despite its application in a range of brain disorders, it remains unclear how stimulation of discrete brain areas affects memory performance and the underlying electrophysiological activities. Here, we investigated the effect of direct electrical stimulation...

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• Effects of Na+, K+ and B3+ Substitutions on the Electrical Properties of La10Si6O27 Ceramics

  Publication

  • S. Wang
  • Y. Hsu
  • Y. Liao
  • T. Yang
  • P. Jasiński

  - JOURNAL OF ELECTRONIC MATERIALS - Year 2019

  Doping of Na and K at La sites and of B at Si site in La10Si6O27 with oxyapatite structure and fabrication of their ceramics were made by the solid-state reaction method. It was found that partial substitution of Na+ and K+ on La sites decreased the sinterability of the La10Si6O27 based ceramics, whereas partial substitution of B3+ on the Si site improved the sinterability. Na+ and K+ substitutions in La10−xNaxSi6O27−x and La10−xKxSi6O27−x...

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