Search results for: Huygens source

• JOURNAL OF POWER SOURCES

  Journals

  ISSN: 0378-7753 , eISSN: 1873-2755

• Source

  Journals

  ISSN: 1712-9125

• Source (www.source.ie)

  Journals

  ISSN: 1369-2224

• Management of low-temperature heat source by ORC aided by additional heat source

  Publication

  • D. Mikielewicz
  • J. Wajs
  • M. Bajor
  • E. Żmuda

  - Year 2015

  The presented work is aimed at utilisation of waste heat in the manner to produce electricity in ORC installation. Therefore the precondition of the study was to use the waste heat available in the form of a stream of hot water at 90°C. Such low enthalpy heat source is rather insufficient to produce a good quality vapour to feed the ORC turbine. That was the incentive to search for the ways of increasing the temperature of the...

• Management of low-temperature heat source by ORC aided by additional heat source

  Publication

  • D. Mikielewicz
  • J. Wajs
  • M. Bajor
  • E. Żmuda

  - Applied Mechanics and Materials - Year 2016

  In the paper presented is a concept to utilize waste heat from the power plant with the aid of the low-temperature ORC cycle. The ORC system is heated from two heat sources, the first one being the flow rate of waste heat obtained from the exhaust gases. Subsequently, the working fluid in the cycle is additionally heated by the condensing steam from the low pressure turbine extraction points increasing in such way the level of...

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• Joint Commission: The Source

  Journals

  ISSN: 1542-8672

• LCCT-Z-Source inverters

  Publication

  • M. Adamowicz

  - Year 2011

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• Potato Peels as Source of Nutraceutics

  Publication

  • B. Sawicka
  • D. Skiba
  • P. Barbaś

  - Year 2022

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• ENERGY SOURCES

  Journals

  ISSN: 0090-8312

• Scalar- and vector-source wave equations

  Publication

  • H. Lasota

  - Year 2009

  W analizie zjawisk akustyki liniowej i obliczeniach pola, powszechnie stosowane są równania falowe skalarne dotyczące ciśnienia akustycznego lub potencjału prędkości, natomiast rzadko są choćby tylko wspominane równania wektorowe operujące prędkością cząstek. Jest to przejaw asymetrii w traktowaniu skalarnych i wektorowych wielkości akustycznych. Artykuł przypomina dwa zestawy dualnych równań falowych, jednorodnych i niejednorodnych,...

• The Internet as a knowledge source in Knowledge Views

  Publication

  • P. Piotrowski

  - STUDIA INFORMATICA. SYSTEMS AND INFORMATION TECHNOLOGY. SYSTEMY I TECHNOLOGIE INFORMACYJNE - Year 2009

  Artykuł ten przedstawia koncepcję widoków na bazę wiedzy, jak może ona zostać wykorzystana w celu zbierania informacji z różnych źródeł, wnioskowania nad tymi informacjami i udostępnienia ich w postaci wymaganej przez aplikację. Korzystając z widoków na bazę wiedzy, aplikacja może "widzieć" Internet jako pojedyncze źródło wiedzy.

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• Selected dried fruits as a source of nutrients

  Publication

  • I. Rybicka
  • J. Kiewlicz
  • P. Kowalczewski
  • A. Gliszczyńska-Świgło

  - EUROPEAN FOOD RESEARCH AND TECHNOLOGY - Year 2021

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• New type T-Source inverter

  Publication

  • R. Strzelecki
  • M. Adamowicz
  • N. Strzelecka
  • W. Bury

  - Year 2009

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• Dietary antioxidants as a source of hydrogen peroxide

  Publication

  • M. Grzesik
  • G. Bartosz
  • I. Stefaniuk
  • M. Pichla
  • J. Namieśnik
  • I. Sadowska-Bartosz

  - FOOD CHEMISTRY - Year 2019

  Studies of 54 antioxidants revealed that 27 of them, mainly polyphenols, generated hydrogen peroxide (H2O2) when added to Dulbecco’s modified Eagle’s medium (DMEM), other media used for culture of mammalian and yeast cells and phosphate-buffered saline. The most active antioxidants were: propyl gallate (PG), (−)-epigallocatechin gallate (EGCG) and quercetin (Q). Chelex treatment and iron chelators decreased H2O2 generation suggesting...

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• Cocoon - najnowsze technologie Open Source.

  Publication

  • H. Krawczyk
  • M. Okraszewski

  - Year 2004

  Cocoon jest projektem rozwijanym w ramach fundacji Apache, która stała się symbolem wysokiej jakości systemów Open Source. Środowisko to umożliwia łatwe budowanie zaawansowanych serwisów WWW opartych na XML przez całe zespoły osób bez problemów wchodzenia w swoje kompetencje. W pracy przedstawiono doświadczenie wykorzystania tego środowiska do budowy portali usług informacyjnych oraz oszacowanie charakterystyki wydajności.

• New type T-Source inverter

  Publication

  • R. Strzelecki
  • M. Adamowicz
  • N. Strzelecka
  • W. Bury

  - Year 2009

  This paper presents different topologies of voltage inverters with alternative input LC networks. The basic topology is known in the literature as a Z-source inverter (ZSI). Alternative passive networks were named by the authors as T-sources. T-source inverter has fewer reactive components in comparison to conventional Z-source inverter. The most significant advantage of the T-source inverter (TSI) is its use of a common voltage...

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• Current Source Inverter Fed Drive

  Publication

  • M. Morawiec
  • A. Lewicki

  - Year 2021

  This book covers three-phase and multiphase (more than three-phase) motor drives including their control and practical problems faced in the field (e.g., adding LC filters in the output of a feeding converter), are considered. The new edition contains links to Matlab®/Simulink models and PowerPoint slides ideal for teaching and understanding the material contained within the book. Readers will also benefit from the inclusion of: A...

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• Source: Notes in the History of Art

  Journals

  ISSN: 0737-4453 , eISSN: 2328-207X

• Source Code for Biology and Medicine

  Journals

  ISSN: 1751-0473

• A digital cartographic source for numerical models in hydrology

  Publication

  • W. Szpakowski
  • J. Szulwic

  - TASK Quarterly - Year 2007

  Autorzy prowadzą analizę wykorzystania i przydatności cyfrowych danych kartograficznych w rozwiązywaniu przestrzennych zagadnień hydrologicznych. Szczególne znaczenie dla prowadzonych analiz mają DTM i DEM. Są one źródłem bezpośrednich wielkości wejściowych modelu hydrologicznego i dodatkowo pozwalają na szersze możliwości prezentacji otrzymanego rozwiązania.

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• Documentation generator application for VHDL source codes

  Publication

  • B. Niton
  • K. Pozniak
  • R. Romaniuk
  • R. S. Romaniuk

  - Year 2011

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• A plug-in to Eclipse for VHDL source codes: functionalities

  Publication

  • B. Niton
  • K. Poźniak
  • R. Romaniuk
  • R. S. Romaniuk

  - Year 2012

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• Documentation generator application for MatLab source codes

  Publication

  • B. Niton
  • K. Pozniak
  • R. Romaniuk
  • R. S. Romaniuk

  - Year 2011

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• Open Source in Development: Enabling Business and Services

  Publication

  • G. Link
  • J. Kowal
  • S. Qureshi

  - INFORMATION SYSTEMS MANAGEMENT - Year 2020

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• The Electrical Drive Systems with the Current Source Converter

  Publication

  • M. Morawiec
  • Z. Krzemiński

  - Year 2014

  -

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• Baltic cyanobacteria – a source of biologically active compounds

  Publication

  • H. Mazur-Marzec
  • A. Błaszczyk
  • A. Felczykowska
  • N. Hohlfeld
  • J. Kobos
  • A. Toruńska-Sitarz
  • P. Devi
  • S. Montalvão
  • L. D’souza
  • P. Tammela... and 4 others

  - EUROPEAN JOURNAL OF PHYCOLOGY - Year 2015

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• Neutrophil extracellular traps as the main source of eDNA

  Publication

  • M. Cieśluk
  • E. Piktel
  • M. Wątek
  • B. Durnaś
  • T. Wollny
  • G. Król
  • R. Bucki

  - Studia Medyczne / Medical Studies - Year 2017

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• Synthesized light source for optical coherence tomography

  Publication

  • M. Szczerska
  • R. Hypszer
  • B. Kosmowski

  - Proceedings of SPIE - Year 2006

  W artykule omówiono wpływ parametrów źródła promieniowania optycznego na właściwości systemu OCT. Szczególną uwagę zwrócono na źródła syntezowane. Omówiono charakterystykę źródła zbudowanego z dwóch różnych diod SLD. Przedstawiono wyniki pomiarów, które wskazują na możliwości znacznego polepszenia czułości i rozdzielczości systemu OCT wykorzystującego takie źródło.

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• On numerical calculation of acoustic field of plane source.

  Publication

  • S. Leble
  • A. Sukhov

  - TASK Quarterly - Year 2003

  Składowe harmoniczne wiązki akustycznej zostały obliczone na podstawie reprezentacji w postaci całek według teorii reprezentacji. Zastosowano nowe metody do obliczania całek od funkcji szybko oscylacyjnych.

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• Thermal lenses caused by any acoustic source.

  Publication

  • A. Perelomova

  - HYDROACOUSTICS - Year 2003

  Nieliniowe straty energii fali akustycznej doprowadzają do powstania obszarów ogrzanych, to znaczy obszarów o innej prędkości fali akustycznej niż pozostała przestrzeń. Soczewki termiczne wywoływane przez propagację fal akustycznych okresowych i nieokresowych są rozpatrywane. Przedstawiono ilustrację obliczeń numerycznych.

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• Predictive Current Control of Voltage-Source Inverter.

  Publication

  • H. Abu-Rub
  • J. Guziński
  • Z. Krzemiński
  • H. Toliyat

  - Year 2004

  W artykule przedstawiono regulator prądu stojana silnika asynchronicznego z predykcją napiecia wyjściowego. Rozważono aspekty praktycznej realizacji algorytmu w układzie z procesorem sygnałowym związane z opóźnieniami pomiaru prądu przy zastosowaniu przetwornika A/C. Układ zrealizowano praktycznie przy wykorzystaniu układu FPGA. W pracy zamieszczono wyniki badań symulacyjnychi eksperymentalnych.

• MARITIME LASER SCANNING AS THE SOURCE FOR SPATIAL DATA

  Publication

  • P. Burdziakowski
  • A. Janowski
  • A. Kholodkov
  • K. Matysik
  • M. Matysik
  • M. Przyborski
  • J. Szulwic
  • P. Tysiąc
  • A. Wojtowicz

  - Polish Maritime Research - Year 2015

  The rapid development of scanning technology, especially mobile scanning, gives the possibility to collect spatial data coming from maritime measurement platforms and autonomous manned or unmanned vehicles. Presented solution is derived from the mobile scanning. However we should keep in mind that the specificity of laser scanning at sea and processing collected data should be in the form acceptable in Geographical Information...

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• Formal Institutions: the Source of Unproductive Entrepreneurship in Poland

  Publication

  • J. Wasilczuk
  • P. Dominiak

  - Year 2016

  The purpose of this article is to determine the entrepreneurs' perception of formal institutions in Poland as a source of non-productive behaviours. The research methodology was developed based on many years of the teams' research experience. It involved three stages of research: 1) panel of experts and 2) telephone surveys of 1,612 entrepreneurs in Poland, which were the basis for 3) development of detailed research to be conducted...

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• Distribution of heat generated by a local heat source

  Publication

  • S. Gumkowski
  • J. Gościk

  - Year 2005

  W pracy przedstawiono analizę rozpływu ciepła wygenerowanego przez lokalne źródło umieszczone w płycie, po której przepływa warstwa wody.

• development of an open source software to transform acoustic data for classification of benthic habitat

  Publication

  • N. Sanchez-Carnero
  • M. Moszyński

  - HYDROACOUSTICS - Year 2007

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• Extremophile Deinococcus geothermalis as potential source of proteolytic enzymes

  Publication

  • O. Pietrow-Tobiszewska
  • A. Panek
  • J. Synowiecki

  - Acta Biochimica Polonica - Year 2011

  Among many extremozymes, thermophilic enzymes have attracted most attention during the past four decades. Such enzymes are of considerable industrial and biotechnological interest due to the fact that the enzymes are better suited for harsh industrial processes. There are many advantages of conducting industrial processes at high temperature, such as the increased solubility of many polymeric substrates, resulting in decreased...

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• Nuclear power plant as a source of electrical energy and heat

  Publication

  • T. Minkiewicz
  • A. Reński

  - ARCHIWUM ENERGETYKI / ARCHIVES OF ENERGETICS - Year 2011

  In this paper certain issues concerning usage of nuclear power plants as sources of not only electric power but also thermal energy will be discussed. For such a solution appeals most of all the need to limit harmful emissions of gases (including CO2) and ashes, which come from the process of burning fossil fuels, as well as the raising demand for network heat and chill. Additionally combined heat and power production brings measurable...

• Treated wasetewater as a source of humic substances in surface waters

  Publication

  • H. Obarska-Pempkowiak
  • M. Gajewska
  • E. Wojciechowska

  - Year 2009

  Humic substances impose substantial effect on the aquatic environment as well as the water organisms and human health. Among other features, the humic acids determine organoleptic properties of surface waters. Therefore explanation of the origin and properties of humic acids in surface waters is one of the priorities of water technology.Recently it was pointed out that in the wastewater treatment process organic compounds characterized...

• Meat and fermented meat products as a source of bioactive peptides

  Publication

  • J. Stadnik
  • P. Kęska

  - ACTA Scientiarum Polonorum Technologia Alimentaria - Year 2015

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• Application of industrial waste as a carbon source for biosurfactants production

  Publication

  • I. E. Kłosowska-Chomiczewska

  - Year 2012

  Biosurfactants are natural surfactants produced by variety of microorganisms. They are very prospective product due to good biodegradability, low toxicity, good physicochemical properties and high efficiency in many applications. Moreover, they are efficient in wide range of pH, temperatures and salinity. However, the production of biosurfactants is very expensive due to high purification cost. This cost can be minimized by application...

• Gas boiler as a heat source for the domestic micro-CHP

  Publication

  • D. Mikielewicz
  • J. Wajs
  • J. Mikielewicz

  - Journal of Power Technologies - Year 2014

  This analysis considers a commercially available domestic gas boiler as a heat source for a domestic organic Rankine cycle system. An experimental study was made into the applicability of the gas boiler (De Dietrich with thermal power 25 kW) coupled with the laboratory prototype micro ORC setup. The main aim of the study is to determine the working fluid temperature, attainable heat rates and effciencies of the whole system. Preliminary...

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• The Effects of Cluster Cooperation as a Source of Company Value Creation

  Publication

  • J. Kuczewska
  • S. Morawska
  • T. Tomaszewski

  - Year 2019

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• Gas boiler as a heat source for the domestic micro-CHP

  Publication

  • D. Mikielewicz
  • J. Wajs
  • J. Mikielewicz

  - Year 2013

  In the presented analysis a commercially available domestic gas boiler as a heat source for domestic ORC is considered. The applicability of the gas boiler (De Dietrich with thermal power 25 kW) coupled with the laboratory prototype micro ORC setup has experimentally studied. The main aim of the study is to determine the working fluid temperature, attainable heat rates and efficiencies of the whole system. Preliminary investigations...

• Screening of volatile organic compounds as a source for indoor pollution

  Publication

  • B. Zabiegała
  • M. Partyka
  • A. Gawrońska
  • A. Wasilewska
  • J. Namieśnik

  - International Journal of Environment and Health - Year 2007

  Lotne związki organiczne (VOC) stanowią jedne z istotniejszychzanieczyszczeń powietrza wewnętrznego, ich stężenia w powietrzu wewnętrznym są często kilkakrotnie wyższe niż odpowiadające im stężenia w powietrzu zewnętrznym. Ten niekorzystny stosunek stężeń wskazuje na obecność endogennych źródeł emisji (usytuowanych bezpośrednio wewnątrz budynków). Lotne związki organiczne uwalniane są do powietrza wewnętrznego z wielu kontrolowanych...

• Open-source software (OSS) and hardware (OSH) in UAVs

  Publication

  • P. Burdziakowski
  • N. Razmjooy
  • V. Estrela
  • J. Hemanath

  - Year 2020

  The popularity of the Open Source Tool (OST) has expanded significantly. This is the case for Unmanned Aerial Vehicles (UAVs) based on open-source hardware (OSH) as well. Open-source software (OSS) and OSH can be applied in a wide range of applications and can improve several technologies. The chapter begins with an introduction to OSS depicting its rationale, description of fundamental differences between OSS and proprietary software...

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• Open-Source Coprocessor for Integer Multiple Precision Arithmetic

  Publication

  • K. Rudnicki
  • T. Stefański
  • W. Żebrowski

  - Electronics - Year 2020

  This paper presents an open-source digital circuit of the coprocessor for an integer multiple-precision arithmetic (MPA). The purpose of this coprocessor is to support a central processing unit (CPU) by offloading computations requiring integer precision higher than 32/64 bits. The coprocessor is developed using the very high speed integrated circuit hardware description language (VHDL) as an intellectual property (IP) core. Therefore,...

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• Determination of Liquid Detergent Pods as a Potential Microplastic Source

  Publication

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

  - Chemistry & Chemical Technology - Year 2023

  Washing pods became a popular way to add detergent to washing machines. Despite the claims about the degradability of the pod film, the sludge in pipes can be observed after the usage of such pods. This study focused on a quantitative and qualitative analysis of washing pod films as a source of microplastic.

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• The Caucasian flora: a still-to-be-discovered rich source of antioxidants

  Publication

  • N. Sahakyan
  • M. Petrosyan
  • I. Koss-Mikołajczyk
  • A. Bartoszek-Pączkowska
  • T. Gabour Sad
  • M. J. Nasim
  • M. Vanidze
  • A. Kalandia
  • J. Claus
  • A. Trchounian

  - FREE RADICAL RESEARCH - Year 2019

  Cellular redox homeostasis is a state of balance between the formation of Usually Reactive Oxygen and / or Nitrogen Species (ROS/RNS), endogenous antioxidant defence systems, and exogenous dietary antioxidants. The disturbance of redox homeostasis, by the overproduction of endogenous ROS/RNS, may increase the risk of development of so-called civilisation diseases. The solution seems to be either the increased production of endogenous...

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• Fifth generation light sources

  Publication

  • R. Romaniuk
  • R. S. Romaniuk

  - Year 2016

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• Model of noise sources in supercapacitors

  Publication

  • Ł. Lentka

  - Journal of Physics : Conference Series - Year 2018

  The paper presents detailed model of noise sources in supercapacitors. Noise phenomena observed in supercapacitors may be used as a diagnostic tool for assessment of supercapacitor quality or degradation mechanisms (e.g. corrosion of the electrodes or cloggin g up the pores) during ageing. Therefore, it is important to consider where noise is generated. The equivalent circuit of noise sources existing...

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• Alternative and New Protein Sources

  Publication

  • B. Sawicka
  • K. Umachandran
  • N. Nasir
  • D. Skiba

  - Year 2020

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• Teratomas of Drosera capensis var. alba as a source of naphthoquinone: ramentaceone

  Publication

  • A. Królicka
  • A. Szpitter
  • K. Stawujak
  • R. Barański
  • A. Gwizdek-Wiśniewska
  • A. Skrzypczak
  • M. A. Kamiński
  • E. Łojkowska

  - PLANT CELL TISSUE AND ORGAN CULTURE - Year 2010

  Plants belonging to genus Drosera (family Droseraceae) contain pharmacologically active naphthoquinones such as ramentaceone and plumbagin. Hairy root cultures obtained following Agrobacterium rhizogenes-mediated transformation have been reported to produce elevated levels of secondary compounds as well as exhibit desirable rapid biomass accumulation in comparison to untransformed plants. The aim of this study was to establish...

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• Analysis of the impact of aspect-oriented programming on source code quality

  Publication

  • A. Przybyłek

  - Year 2011

  Celem rozprawy jest ocena wpływu paradygmatu aspektowego na: modularność, możliwość dalszego rozwoju oraz ponowne użycie oprogramowania. Jako punkt odniesienia do oceny paradygmatu aspektowego wybrano paradygmat obiektowy. W ramach pracy przeprowadzono studium przypadków, w którym zbadano implementacje obiektowe oraz aspektowe 11 rzeczywistych systemów i 23 wzorców projektowych. Ponadto zrealizowano kontrolowany eksperyment, w...

• Urine composition as a source of information about occupational exposure to chemicals

  Publication

  • I. Rutkiewicz
  • B. Kudłak
  • J. Namieśnik

  - Current Topics in Analytical Chemistry - Year 2008

  In the article there is presented review of data concerning application of human urine samples to analytical studies conducted in order to gain information on occupational exposure. The parameters characterizing the most commonly used techniques of xenobiotics isolation and preconcentration (organic compounds and metals) from urine samples and techniques of analytes determination in properly prepared extract samples of human urine.

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• Sensorless Control of Induction Motor Supplied by Current Source Inverter

  Publication

  • M. Morawiec

  - Year 2012

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• The method of location and identification of weak electric field source in seawater

  Publication

  • K. Jakubiuk
  • P. Zimny
  • M. Wołoszyn

  - Poznan University of Technology Academic Journals. Electrical Engineering - Year 2012

  The paper presents the method and measurement system that allows to lacate the detected object and to identify parameters of its simplified model in form of a current dipole.

• Reference LED source of subnanosecond pulses of broadband optical radiation

  Publication

  • S. Voronov
  • O. Genkin
  • V. Genkina
  • V. Rodionov
  • R. Romaniuk
  • P. Kisała
  • J. Klimek
  • N. Askarova
  • S. Luganskaya
  • R. S. Romaniuk

  - Year 2017

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• Optimal Multivariable Control for Modified Z-source Based IPT

  Publication

  • B. Pakhaliuk
  • O. Husev
  • R. Strzelecki
  • K. Tytelmaier
  • J. Zakis
  • D. Stepins

  - Year 2018

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• <title>Synthesized light source for optical coherence tomograph</title>

  Publication

  • M. Jedrzejewska-Szczerska
  • R. Hypszer
  • B. Kosmowski

  - Year 2006

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• Power-line corridors as source habitat for butterflies in forest landscapes

  Publication

  • Å. Berg
  • K. Bergman
  • J. Wissman
  • M. Żmihorski
  • E. Öckinger

  - BIOLOGICAL CONSERVATION - Year 2016

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• Modular multipulse voltage source inverters with integrating coupled reactors

  Publication

  • R. Strzelecki
  • T. Sak
  • N. Strzelecka

  - Year 2016

  A novel approach to the voltage source inverters (VSI) construction is presented in the paper. The invented inverter structures allow to operate several DC/AC converters in parallel resulting in lower voltage distortions at extremely low switching frequency. The research presented in the paper describes such a parallel operation of the VSI’s which is possible thanks to the use of coupled inductors. The eighteen-pulse and twenty-four-pulse...

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• Modeling of broadband light source to use with optical coherenttomography system

  Publication

  • M. Maciejewski
  • J. Pluciński
  • B. Kosmowski
  • M. Strąkowski
  • M. Szczerska
  • R. Hypszer

  - Proceedings of SPIE - Year 2006

  W pracy przedstawiono modelowanie źródeł szerokopasmowych na potrzeby systemów koherentnej tomografii optycznej z punktu widzenia uzyskiwanej zdolności podłużnej i jakości otrzymywanych obrazów. Pokazano na przykładzie źródła szerokopasmowego wykorzystującego światłowód fotoniczny do generacji w wyniku zjawisk nieliniowych ''supercontinuum'' wpływ kształtowania wiązki na możliwości pomiarowe systemu OCT.

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• Control of voltage source inverter without dead-time effects.

  Publication

  • A. Lewicki
  • Z. Krzemiński

  - Year 2004

  W artykule zaproponowano metodę dokładnego generowania wektora napięcia o małej amplitudzie w falowniku napięcia. Zaprezentowano metodę modulacji szerokości impulsów, w której wyeliminowano koniecznosć wprowadzania czasów martwych oraz kompensacji ich wpływu na napięcie wyjsciowe przekształtnika

• Output filter for voltage source inverter supplying induction motor

  Publication

  • Z. Krzemiński
  • J. Guziński

  - Year 2005

  W artykule przedstawiono problemy związane z występowaniem składowej zerowej w falowniku napięcia. Jako rozwiązanie zastosowano filtr bierny składowej zerowej dodatkowo pełniący funkcję filtru sinusoidalnego. Filtr nie wprowadza zauważalnych przesunięć prądów i napięć na wejściu i wyjściu układu. Przedstawiono metodę doboru elementów filtru w prostokatnym układzie współrzędnych oraz wyniki badań symulacyjnych i eksperymentalnych....

• Sensorless Control of Induction Machine Supplied by Current Source Inverter

  Publication

  • M. Morawiec

  - ASIAN JOURNAL OF CONTROL - Year 2015

  The paper describes the voltage control technique of induction machines supplied by a current source inverter. The control system is based on proposed new multi-scalar variables, which are named “r.” The control system contains the output filter capacitor's model. In the sensorless control system the Z type backstepping speed observer was applied. The mathematical dependences are confirmed by simulation and experimental research.

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• Numerical Simulation of Operating Parameters of the Ground Source Heat Pump

  Publication

  • F. Bartyzel
  • T. Wegiel
  • M. Kozień-Woźniak
  • M. Czamara

  - ENERGIES - Year 2022

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• Analysis of High Resolution Clouds of Points as a Source of Biometric Data

  Publication

  • K. Bobkowska
  • A. Janowski
  • M. Przyborski
  • J. Szulwic

  - Year 2016

  The article presents the analysis devoted to human face data obtained by means of precise photographic scanners. Collected point clouds were used to make high precision meshes of human face. The essence of these studies is the comparison of relative features as well as the comparison of absolute models which require as precisely as possible matching of face models. The article focuses on the analysis of various parts of the human...

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• Three-Level Z-Source Neutral-Point-Clamped Inverter

  Publication

  • R. Strzelecki

  - Year 2006

  The paper describes construction and the principles of activity, attributes and potential of 3-phase Z-type inverters. The paper focuses on the basic system and suggested 3-level system of a NPC type Z-inverter, which was elaborated by authors. Simplified theoretical analysis of both systems has been verified by detailed simulation research. In the last section of the article, the possibility to build multilevel Z- inverters based...

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• Eigenvalue approach to synthesis of prototype filters with source/load coupling

  Publication

  • P. Kozakowski
  • A. Lamęcki
  • P. Sypek
  • M. Mrozowski

  - Year 2005

  Artykuł przedstawia nową, szybko zbieżną, technikę syntezy macierzy sprzężeń filtrów o charaktrystyce Czebyszewa. Synteza opiera się na zastosowaniu metody najmniejszych kwadratów w odniesieniu do wartości własnych macierzy sprzężeń oraz jej podmacierzy.

• Small hydro-power as a source of renewable energy in the European Union

  Publication

  • R. Wichowski

  - Year 2005

  W pracy przedstawiono udział odnawialnych źródeł energii w produkcji energii elektrycznej w 25 krajach Unii Europejskiej w roku 1997 i przewidywanu udział w roku 2010. Omówiono krótką historię rozwoju małych elektrownii wodnych w UE i dokonano przeglądu małych elektrowni wodnych w krajach UE oraz w wybranych krajach Europy, nie należących do UE. Przedstawiono także możliwy rozwój małej energetyki wodnej w okresie perspektywicznym...

• Ranking of Generation Source Locations by a Hybrid Multi-Criteria Method

  Publication

  • A. Lenarczyk
  • M. Jaskólski
  • P. Bućko

  - Acta Energetica - Year 2020

  The paper presents a ranking of the locations of eight renewable energy sources (RES) made using a hybrid multi-criteria analysis method. The method is a combination of the analytical hierarchical process (AHP) method and numerical taxonomy. The considered generating sources, i.e. solar plants, biogas plants, and wind farms are sources that will significantly contribute to implementing the provisions of the energy and climate package...

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• Hybrid Modulation for Modular Voltage Source Inverters with Coupled Reactors

  Publication

  • K. J. Szwarc
  • P. Szczepankowski
  • J. Nieznański
  • C. Swinarski
  • A. Usoltsev
  • R. Strzelecki

  - ENERGIES - Year 2020

  This paper proposes and discusses a concept of a hybrid modulation for the control of modular voltage source inverters with coupled reactors. The use of coupled reactors as the integrating elements leads to significant reduction in the size and weight of the circuit. The proposed modulation combines novel coarsely quantized pulse amplitude modulation (CQ-PAM) and innovative space-vector pulse width modulation (SVPWM). The former...

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• Bee Pollen and Bee Bread as a Source of Bacteria Producing Antimicrobials

  Publication

  • K. Matejczuk
  • R. Worobo
  • J. Walkusz
  • P. Szweda

  - Antibiotics-Basel - Year 2021

  The principal objective of the study was the isolation and identification of bacteria that are present in mature bee bread (BB) and dried (ready for selling and consumption) bee pollen (BP). Obtained isolates were screened for their potential to inhibit select human pathogenic bacteria and their ability to produce enzymes of particular industrial importance. Four and five samples of BP and BB, respectively, were used for the study....

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• Optimal Multivariable Control for Modified Z-source Based IPT

  Publication

  • B. Pakhaliuk
  • O. Husev
  • R. Strzelecki
  • K. Tytelmaier
  • J. Zakis
  • D. Stepins

  - Year 2018

  This paper describes Z-source based inductive power transfer topologies control approaches. The goal of this work is a multi-variable control approach which involves a constant voltage/constant current control along with an optimal frequency control to obtain maximum efficiency. This control is applied to the wireless power transfer system based on a modified Z-source topology. The description of the control method along with simulation...

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• The laboratory kit of EMC disturbances sources

  Publication

  • A. Elert
  • E. Śniadach
  • S. Galla

  - Elektronika : konstrukcje, technologie, zastosowania - Year 2011

  Przedstawiono podstawowe przyczyny powstawania zakłóceń w urządzeniach elektrycznych i elektronicznych oraz metody i sposoby ich analizy. Przedstawiono również koncepcje układów elektronicznych mających być wzorcowymi źródłami zaburzeń stosowanymi podczas ćwiczeń laboratoryjnych. Jako źródła zaburzeń małych i wysokich częstotliwości wybrano układy mogące być łatwo sterowane i zmieniane w celu wskazania konieczności stosowania rozwiązań...

• Storing energy from renewable sources

  Publication

  • W. Lewandowski

  - Rinok Instalacij. Tieplotiechnika Santiechnika Gazopostaczania - Year 2006

  Omówiono metody, urządzenia i sposoby magazynowania energii mechanicznej, elektrycznej, cieplnej i chemicznej z uwzględnieniem energii ze źródeł odnawialnych.

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• Investigation of the road noise source employing an automatic noise monitoring station

  Publication

  • M. Szczodrak
  • A. Czyżewski
  • J. Kotus

  - Archives of Acoustics - Year 2008

  The paper presents a pilot investigation of noise source models in two selected localizations in the context of future dynamic noise map creation. The experiments were carried out using the automatic noise monitoring station engineered at the Multimedia Systems Departmentof the Gda´nsk University of Technology. The results of the noise measurements employing monitoring stations and its comparison to the reference values are depicted....

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• The noise macromodel of an optocoupler including 1/(f^alfa) noise source

  Publication

  • B. Stawarz-Graczyk
  • J. A. Cichosz
  • A. Konczakowska

  - Bulletin of the Polish Academy of Sciences-Technical Sciences - Year 2008

  The course of design of an optocoupler's PSpice macromodel including noise sources is described. The PSpice macromodel is proposed for the low frequency range. The PSpice model of a MOSFET transistor was applied as the noise source type 1/(f^alfa) in an optocoupler PSpice macromodel. In the enhanced macromodel the value of an exponent α can be changed in the range of 0.8 - 1.25.

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• Documentation generator for VHDL and MatLab source codes for photonic and electronic systems

  Publication

  • B. Niton
  • K. Pozniak
  • R. Romaniuk
  • R. S. Romaniuk

  - Year 2011

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• Documentation generator for VHDL and MatLab source codes for photonic and electronic systems

  Publication

  • B. Niton
  • K. Pozniak
  • R. Romaniuk
  • R. S. Romaniuk

  - Year 2011

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• The Possibility to use a Nuclear Power Plant as a Source of Electrical Energy and Heat

  Publication

  • T. Minkiewicz
  • A. Reński

  - Acta Energetica - Year 2014

  In this article issues concernig the possibility of nuclear power plant (NPP) operation also as a source of heat, which means combined heat and power production, have been described. CHP work is possible and profitable only in those areas where high thermal power demand occurs, which means near city agglomerations such as Warsaw or the Tri-City. Two levels of thermal power delivered to the heating system have been considered. Preliminary...

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• Broadband LFM signal source for a module-based diver detection sonar

  Publication

  • K. Zachariasz
  • W. Lis
  • A. Elminowicz

  - HYDROACOUSTICS - Year 2010

  Praca przedstawia koncepcję źródła impulsów sondujących sonaru DDS, dla pogrupowanych po stronie nadawczej elementarnych sekcji przetwornika w moduły 8 lub 16 elementowe. Na podstawie oszacowania teoretycznego i pomiarów czwórnikowych określono potrzebną moc wyjściową i topologię tych nadajników. Przedstawione są też uzyskane na drodze pomiarów charakterystyki częstotliwościowe modułów przetwornika, razem z zastosowanym układem...

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• Characterization of Modified Silica Gel as a Source of Ethene for Standard Gaseous Mixtures

  Publication

  • M. Prokopowicz
  • A. Przyjazny
  • Y. Szczygelska-Tao
  • J. Biernat
  • J. Namieśnik

  - MICROCHEMICAL JOURNAL - Year 1998

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• CCM and DCM operation analysis of cascaded quasi-Z-source inverter

  Publication

  • D. Vinnikov
  • I. Roasto
  • R. Strzelecki
  • M. Adamowicz

  - Year 2011

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• Optimal Components Design for Modified Z-Source Based IPT Approach

  Publication

  • B. Pakhaliuk
  • O. Husev
  • R. Strzelecki
  • K. Tytelmaier

  - Year 2018

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• Sea-dumped ammunition as a possible source of mercury to the Baltic Sea sediments

  Publication

  • J. Bełdowski
  • M. Szubska
  • G. Siedlewicz
  • E. Korejwo
  • M. Grabowski
  • M. Bełdowska
  • U. Kwasigroch
  • J. Fabisiak
  • E. Łońska
  • M. Szala
  • J. Pempkowiak

  - SCIENCE OF THE TOTAL ENVIRONMENT - Year 2019

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• Missing Verification of Source Data in Hypertension Research: The HYGIA PROJECT in Perspective

  Publication

  • M. Brunström
  • S. Kjeldsen
  • R. Kreutz
  • K. Gjesdal
  • K. Narkiewicz
  • M. Burnier
  • S. Oparil
  • G. Mancia

  - HYPERTENSION - Year 2021

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• RAPESEED PELLET - A BYPRODUCT OF BIODIESEL PRODUCTION - AS AN EXCELLENT RENEWABLE ENERGY SOURCE

  Publication

  • E. Klugmann-Radziemska
  • K. Ciunel

  - Chemistry-Didactics-Ecology-Metrology - Year 2013

  Vegetable oils are renewable feedstock currently being used for production of biofuels from sustainable biomass resources. The existing technology for producing diesel fuel from plant oils, such as rapeseed, soybean, canola and palm oil are largely centered on transesterification of oils with methanol to produce fatty acid methyl esters (FAME) or biodiesel. Rapeseed pellet - crushed seed residue from oil extraction is a byproduct...

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• Modeling of Heat Source Based on Parameters of Electron Beam Welding Process

  Publication

  • P. Lacki
  • K. Adamus
  • K. Wojsyk
  • M. Zawadzki
  • Z. Nitkiewicz

  - ARCHIVES OF METALLURGY AND MATERIALS - Year 2011

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• Low-Level Aerial Photogrammetry as a Source of Supplementary Data for ALS Measurements

  Publication

  • K. Bobkowska
  • A. Inglot
  • M. Przyborski
  • J. Sieniakowski
  • P. Tysiąc

  - Year 2017

  The development of laser scanning technology ALS allows to make high-resolution measurements for large areas result-ing in significant reduction of costs. The main stakeholders at heights data received from the airborne laser scanning is mainly state administration. The state institutions appear among projects such as ISOK. Each point is classified in ac-cordance with the standard LAS 1.2, our research focuses on the class 6 -...

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• Phytoecdysteroid containing plants – a source of bioactive compounds with potential anticarcinogenic effects

  Publication

  • J. Cieślewicz
  • M. A. Kamiński
  • A. Bartoszek-Pączkowska

  - Acta Biochimica Polonica - Year 2015

  Ecdysteroids are a group of steroids synthesized in inver- tebrates as molting hormones and also in some plants as secondary metabolites acting as a defense against parasites. These compounds do not naturally occur in mammals and are not structurally related to mammalian steroid hor- mones, consequently do not activate mammalian hormone receptors. Ecdysteroids exhibit very low toxicity to mam- mals and to date no serious side effects...

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• Nonlinear Control of a Doubly Fed Generator Supplied by a Current Source Inverter

  Publication

  • K. Blecharz
  • M. Morawiec

  - ENERGIES - Year 2019

  Nowadays, wind turbines based on a doubly fed induction generator (DFIG) are a commonly used solution in the wind industry. The standard converter topology used in these systems is the voltage source inverter (VSI). The use of reverse-blocking insulated gate bipolar transistor (RB-IGBT) in the current source inverter topology (CSI), which is an alternative topology, opens new possibilities of control methods. This paper presents...

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• Supercritical Algal Extracts: A Source of Biologically Active Compounds from Nature

  Publication

  • I. Michalak
  • A. Dmytryk
  • P. Wieczorek
  • E. Rój
  • B. Łęska
  • B. Górka
  • B. Messyasz
  • J. Lipok
  • M. Mikulewicz
  • R. Wilk... and 3 others

  - Journal of Chemistry - Year 2015

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• Red Algae – An Alternative Source of Carbon Material for Energy Storage Application

  Publication

  • A. Nowak
  • A. Lisowska-Oleksiak

  - International Journal of Electrochemical Science - Year 2014

  New electrode material obtained by pyrolysis of aquatic biomass macro (red algae) soaked with glucose solution has been characterized by SEM, EDX and Raman spectroscopy. Graphitized carbon was identified by Raman spectroscopy. Galvanostatic cyclic polarization of the materials in contact with 1M LiPF6 electrolyte in EC:DMC (1:1 v/v) and Li as a counter electrode was performed. Specific capacity of the novel material was enhanced...

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• Choosing source of microorganisms and processing technology for next generation beet bioinoculant

  Publication

  • S. Szymańska
  • M. Sikora
  • K. Hrynkiewicz
  • J. Tyburski
  • A. Tretyn
  • M. Gołębiewski

  - Scientific Reports - Year 2021

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• Low-Level Aerial Photogrammetry as a Source of Supplementary Data for ALS Measurements

  Publication

  • K. Bobkowska
  • A. Inglot
  • M. Przyborski
  • J. Sieniakowski
  • P. Tysiac
  • P. Tysiąc

  - Year 2017

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• Biological fluids as a source of information on the exposure of man to envinonmental chemical agents.

  Publication

  • Ż. Polkowska
  • K. Kozłowska
  • A. Przyjazny
  • J. Namieśnik

  - Year 2004

  Wiele związków (min. lotne związki chlorowcoorganiczne, metale) ma szkodliwy wpływ na tkanki i narządy organizmu ludzkiego, wywołując nieodwracalne zmiany chorobowe. W celu określenia zagrożenia zawodowego coraz częściej wykonuje się pomiar stężeń substancji chemicznych i ich metabolitów w płynach biologicznych - moczu, krwi, rzadziej w mleku matki, żółci, ślinie, czy też spermie. Aby oznaczyć poziomy tych stężeń, pobrane próbki...

• Charakterystyka i przegląd oprogramowania open source dla zastosowań biznesowych.

  Publication

  • T. Sitek

  - Year 2004

  W niniejszym artykule została dokonana analiza porównawcza powszechnie używanego oprogramowania komercyjnego i oprogramowania open source opartego na licencji GPL. Jako, że produkty open source obecnie zdobywają rynek aplikacji biznesowych, zawarto przegląd obecnie dostępnych narzędzi informatycznych w ramach tej grupy - od niezbędnych każdemu przedsiębiorstwu pakietów biurowych po zintegrowane systemy klasy ERP. Przedstawiono...

• Tracking of the broadband source of the underwater noise in the very shallow water conditions

  Publication

  • G. Grelowska
  • E. Kozaczka

  - HYDROACOUSTICS - Year 2015

  The paper contains the result s, both theoretical and experimental , connected with the tracking of the underwater noise source as small ships, pontoon , diver and so on. The pro blem of security in the shallow water area is the challenge for underwater acousticians. In this paper there is take n into account the detection of the sources that move on the surface of the sea or underwater in shallow...

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• New source of the thermostable alpha-glucosidase suitable for single stepstarch processing

  Publication

  • A. Zdziebło
  • J. Synowiecki

  - FOOD CHEMISTRY - Year 2002

  Zbadana wewnątrzkomórkowa termostabilna alfa-glukozydaza z Thermus thermo-philus przejawia największą aktywność w 85 C przy pH 6.2. Aktywność enzymu po 5 h inkubacji w 75 C (pH 6.2) prawie nie ulega zmianie a okres połowicznej inaktywacji w 85 C wynosi 2 h. Właściwości te wskazują na przydatność wymienionego enzymu w jednoetapowej hydrolizie skrobi.