Wyniki wyszukiwania dla: water vapour transmission

• Case study of water vapour transmission properties of EPDM façade membranes

  Publikacja

  • A. Ambroziak
  • S. Dobrowolski

  - Archives of Civil Engineering - Rok 2021

  This research aimed to investigate the water vapour transmission properties of chosen EPDM membranes applied in façade and window systems under laboratory tests. The applied procedure included in national and international standards utilized for the laboratory tests of water vapour transmission properties of EPDM membrane is described. Two main types (outside and inside types) of EPDM membranes are laboratory tested. The authors...

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• Carbon Dioxide and Water Vapour Fluxes of a Alkaline Fen and Their Dependence on Reflectance

  Publikacja

  • W. Ciezkowski
  • T. E. Berezowski
  • M. Kleniewska
  • J. Chormanski

  - Rok 2018

  This study shows results of parallel measurements of greenhouse gases fluxes (carbon dioxide and water vapour) and canopy reflectance of alkaline fen. Fluxes were measured using eddy-covariance technique on micrometeorological station located in the Upper Biebrza Basin (NE Poland) in Rogożynek Village. Study site is located in the Biebrza National Park which was established to protect one of the biggest coherent lowland wetland...

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• Sound velocity and parameter of nonlinearity of a ternary mixture consisting of water, vapour and dry air

  Publikacja

  • A. Perelomova

  - Archives of Acoustics - Rok 2006

  Rozpatruje się własności akustyczne mieszanki trójskładnikowej zawierającej wodę, parę wodną i suche powietrze. Dokładne obliczenia pozwoliły na wyprowadzenie prędkości dźwięku i parametru nieliniowości jako funkcji koncentracji pary wodnej i powietrza przy zadanych warunkach równowagowych. Rozpatrywane są dwa typy mieszanin. Przedstawiono wzory ogólne oraz symulacje numeryczne.

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• (Vapour + liquid) equilibrium in (n,n-dimethylacetamide + ethanol + water) at the temperature 313.15 K

  Publikacja

  • J. Zielkiewicz

  - JOURNAL OF CHEMICAL THERMODYNAMICS - Rok 2006

  W pracy prezentowane są pomiary całkowitej prężności pary dla tytułowego układu trójskładnikowego oraz dla składowych układów binarnych. Uzyskane w pracy wyniki porównane zostały z wcześniejszymi danymi dla podobnych układów. Znaleziono w przybliżeniu liniową zależność pomiędzy wartościami nadmiarowej entalpii swobodnej Gibbsa a objętością molową amidu, spełnianą w układach dwuskładnikowych: amid + alkohol alifatyczny.

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• (Vapour and liquid) equilibrium in (N,N-dimethylacetamide+methanol+water) at the temperature 313.15 K.

  Publikacja

  • J. Zielkiewicz

  - JOURNAL OF CHEMICAL THERMODYNAMICS - Rok 2003

  Praca zawiera wyniki pomiarów całkowitej prężności pary dla tytułowego układu trójskładnikowego oraz dla ''składowych'' układów binarnych. Wyniki obliczeń nadmiarowej energii swobodnej mieszania dla układów (N,N-dimetyloaceta-mid+woda) i (N,N-dimetyloacetamid+metanol) porównane zostały z rezultatami uzyskanymi wcześniej dla innych układów (amid+metanol) oraz (amid+woda). Znaleziono interesującą zależność wartości nadmiaru...

• Testing OFDM Transmission Schemes for Shallow Water Acoustic Communications

  Publikacja

  • I. Kochańska
  • H. Lasota

  - Rok 2013

  Large variability of communication properties of underwater acoustic channels, and especially strongly varying instantaneous conditions in shallow waters, is a tough challenge for the designers of underwater acoustics communication (UAC system. There is a need for developing adaptive signaling schemes that would dynamically optimize signal parameters in both physical and link layers of communication protocols. The orthogonal frequency...

• Adsorption-assisted transport of water vapour in super-hydrophobic membranes filled with multilayer graphene platelets

  Publikacja

  • E. Gontarek-Castro
  • F. Macedonio
  • F. Militano
  • L. Giorno
  • M. Lieder
  • A. Politano
  • E. Drioli
  • A. Gugliuzza

  - NANOSCALE - Rok 2019

  The effects of confinement of multilayer graphene platelets in hydrophobic microporous polymeric membranes are here examined. Intermolecular interactions between water vapour molecules and nanocomposite membranes are envisaged to originate assisted transport of water vapour in membrane distillation processes when a suitable filler-polymer ratio is reached. Mass transport coefficients are estimated under different working conditions,...

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• Analysis of GNSS sensed precipitable water vapour and tropospheric gradients during the derecho event in Poland of 11th August 2017

  Publikacja

  • G. Nykiel
  • M. Figurski
  • Z. Bałdysz

  - JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS - Rok 2019

  Nowadays, one of the techniques that meets the increasing requirements of meteorologist in terms of monitoring of severe weather events is global navigation satellite systems (GNSS), which can provide information about the tropospheric state independently of the weather conditions and even in real time. In this paper we present the usage of GNSS sensed tropospheric data to monitor sudden and intense weather events. Our analyses...

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• Effective green ammonia synthesis from gaseous nitrogen and CO2 saturated-water vapour utilizing a novel photocatalytic reactor

  Publikacja

  • A. Morawski
  • K. Ćmielewska
  • E. Ekiert
  • E. Kusiak-Nejman
  • I. Pełech
  • P. Staciwa
  • D. Sibera
  • A. Wanag
  • J. Kapica-Kozar
  • M. Gano... i 2 innych

  - Chemical Engineering Journal - Rok 2022

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• Diurnal variability of atmospheric water vapour, precipitation and cloud top temperature across the global tropics derived from satellite observations and GNSS technique

  Publikacja

  • Z. Baldysz
  • G. Nykiel
  • D. Baranowski
  • B. Latos
  • M. Figurski

  - CLIMATE DYNAMICS - Rok 2024

  The diurnal cycle of convection plays an important role in clouds and water vapour distribution across the global tropics. In this study, we utilize integrated moisture derived from the global navigation satellite system (GNSS), satellite precipitation estimates from TRMM and merged infrared dataset to investigate links between variability in tropospheric moisture, clouds development and precipitation at a diurnal time scale. Over...

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• Euilibrium composition of CH4-CO2-CO-H2-H2O-C system under various compositions syngas methanation with 10% water vapour introduced

  Dane Badawcze

  open access

  • B. Bochentyn
  • P. Błaszczak

  The equilibrium compositions  of  CH4, CO2, CO, H2, H2O and C under the methanation reaction of various syngas mixtures (different CO/H2 ratio) were supplied with this dataset 

• Euilibrium composition of CH4-CO2-CO-H2-H2O-C system under various compositions syngas methanation with 30vol.% water vapour introduced

  Dane Badawcze

  open access

  • B. Bochentyn
  • P. Błaszczak

  The equilibrium compositions  of  CH4, CO2, CO, H2, H2O and C under the methanation reaction of various syngas mixtures (different CO/H2 ratio) were supplied with this dataset 

• Euilibrium composition of CH4-CO2-CO-H2-H2O-C system under various compositions syngas methanation with 20vol.% water vapour introduced

  Dane Badawcze

  open access

  • B. Bochentyn
  • P. Błaszczak

  The equilibrium compositions  of  CH4, CO2, CO, H2, H2O and C under the methanation reaction of various syngas mixtures (different CO/H2 ratio) were supplied with this dataset 

• Sebastian Lech Wachowski dr inż.

  Osoby

  Instytut Nanotechnologii i Inżynierii Materiałowej

  Urodziłem się w 1987 roku w Bydgoszczy. W 2007 roku ukończyłem Technikum Elektroniczne przy Zespole Szkół Elektroniczych w Bydgoszczy uzyskując tytuł zawodowy technika elektronika. W tym samy roku przeniosłem się do Gdańska gdzie rozpocząłem studnia na kierunku Fizyka Techniczna ze spec. Nanotechnologia na Wydziale Fizyki Technicznej i Matematyki Stosowanej Politechniki Gdańskiej. W 2011 uzyskuję tytuł inżyniera z wyróżnieniem...

• Badanie właściwości czujników wilgotności na bazie nanocząstek tlenku cynku

  Publikacja

  • A. Strzelczyk
  • G. Jasiński
  • P. Jasiński
  • B. Chachulski

  - Rok 2013

  W celu pomiaru wilgotności szeroko stosowane są czujniki elektryczne. Warstwą czynną, zmieniającą swoje właściwości pod wpływem pary wodnej, stanowią najczęściej materiały ceramiczne lub polimerowe. Tlenek cynku jest jednym z materiałów ceramicznych będących dobrym kandydatem do zastosowania go jako warstwy czynną w czujnikach wilgotności. W tej pracy przedstawiono wyniki badań właściwości struktur czujnikowych z warstwą tlenku...

• Water

  Czasopisma

  ISSN: 2073-4441

• Exhaled breath gas sensing using pristine and functionalized WO3 nanowire sensors enhanced by UV-light irradiation

  Publikacja

  • T. Saidi
  • D. Palmowski
  • S. Babicz-Kiewlicz
  • T. Welearegay
  • N. El Bari
  • R. Ionescu
  • J. Smulko
  • B. Bouchikhi

  - SENSORS AND ACTUATORS B-CHEMICAL - Rok 2018

  The development of advanced metal-oxide-semiconductor sensing technologies for the detection of Volatile Organic Compounds (VOCs) present in exhaled breath is of great importance for non-invasive, cheap and fast medical diagnostics. Our experimental studies investigate the effects of operating temperature selection and UV-light irradiation on improving the response of WO3 nanowire sensors towards exhaled breath exposure. Herein,...

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• Improved surface coverage of an optical fibre with nanocrystalline diamond by the application of dip-coating seeding

  Publikacja

  • R. Bogdanowicz
  • M. Sobaszek
  • J. Ryl
  • M. Gnyba
  • M. Ficek
  • Ł. Gołuński
  • W. J. Bock
  • M. Śmietana
  • K. Darowicki

  - DIAMOND AND RELATED MATERIALS - Rok 2015

  Growth processes of diamond thin films on the fused silica optical fibres (10 cm in length) were investigated at various temperatures. Fused silica pre-treatment by dip-coating in a dispersion consisting of detonation nanodiamond (DND) in dimethyl sulfoxide (DMSO) with polyvinyl alcohol (PVA) was applied. Nanocrystalline diamond (NCD) films were deposited on the fibres using the microwave plasma assisted chemical vapour deposition...

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• Magdalena Gajewska prof. dr hab. inż.

  Osoby

  Katedra Technologii w Inżynierii Środowiska

  Magdalena Gajewska (ur. 1.06.1968 r. w Gdańsku) ukończyła studia w 1993 roku na Wydziale Hydrotechniki Politechniki Gdańskiej.  Jest adiunktem w Katedrze Technologii Wody i Ścieków na Wydziale Inżynierii Lądowej i Środowiska Politechniki Gdańskiej. Doktorat (2001) i habilitacja (2013) w dyscyplinie inżynierii środowiska.  W kadencji 2016–2020 pełni funkcję prodziekana ds. nauki. Specjalizuję się w technologiach związanych z ekoinżynierią:...

• Technical and economic conditions of supplying residential consumers with heat from nuclear power plant

  Publikacja

  • A. Reński
  • M. Jaskólski
  • T. Minkiewicz

  - POLISH JOURNAL OF ENVIRONMENTAL STUDIES - Rok 2015

  The reduction of CO2 emission requires technological shift towards carbon-free options. Cogeneration of electricity and heat based on coal and natural gas will experience generation cost increase, if the costs of emissions are imposed on the plant operators. Therefore, nuclear and renewable options should be considered. In this paper, we present the concept of electricity and heat supply system with nuclear condensing turbine adapted...

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• Grzegorz Boczkaj dr hab. inż.

  Osoby

  Katedra Inżynierii Sanitarnej

• WATER SCIENCE AND TECHNOLOGY

  Czasopisma

  ISSN: 0273-1223 , eISSN: 1996-9732

• Revalorization of the Szewalski binary vapour cycle

  Publikacja

  • P. Ziółkowski
  • J. Hernet
  • J. Badur

  - Archives of Thermodynamics - Rok 2014

  The aim of the paper is to revalorizate of the Szewalski binary vapour cycle by analysing thermodynamical and operational parameters of this cycle. This was carried by accessible numerical CFM (Computational Flow Mechanics) codes type, by step-by-step modeling of separates apparatus. The binary vapour cycle is providing steam as the working fluid in the high temperature part of the cycle, while another fluid - a low boiling point...

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• THE THERMODYNAMIC ANALYSIS OF THE SZEWALSKI HIERARCHIC VAPOUR CYCLE COOPERATED WITH THE SYSTEM OF HEAT RECOVERY

  Publikacja

  • P. Ziółkowski
  • T. Kowalczyk
  • J. Hernet
  • S. Kornet

  - Transactions of the Institute of Fluid-Flow Machinery - Rok 2015

  In this paper, thermodynamic analysis of the Szewalski hierarchic vapour cycle cooperated with the system of heat recovery from exhaust gases are presented. According to that purpose, the CFM (Computation Flow Mechanics [1,3]) approach has correctly been used. The whole system consists of the first traditional steam cycle, the second organic Rankine cycle (ORC) and system of heat recovery with use of water with temperature 90...

• Water Reuse_2022

  Kursy Online

  • K. Czerwionka
  • M. Kasprzyk

  Lectures on the subject of Water Reuse

• Water Reuse_2023

  Kursy Online

  • K. Czerwionka
  • M. Kasprzyk

  Lectures on the subject of Water Reuse

• Water Reuse_2024

  Kursy Online

  • K. Czerwionka
  • M. Kasprzyk
  • A. Wilińska-Lisowska

  Lectures on the subject of Water Reuse

• Control of a vapour microturbine set in cogeneration applications

  Publikacja

  • W. Włodarski

  - ISA TRANSACTIONS - Rok 2019

  Systems with microturbines are implemented for local generation of heat and electricity. This paper presents the analysis of control concepts for a vapour microturbine set with a generator with permanent magnets, intended to work in small heat and power plants. Control system variants differed by the selection of controlled signals and set parameters. Possible ways of control were discussed and compared with experimentally determined...

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• WATER RESEARCH

  Czasopisma

  ISSN: 0043-1354

• WATER SUPPLY AND WASTEWATER DISPOSAL

  Kursy Online

  • H. Al-Hazmi

  The course on Water Supply and Wastewater Disposal provides a comprehensive understanding of the principles, practices, and technologies involved in managing water resources effectively. It covers both the supply side, focusing on the provision of clean and safe drinking water, and the disposal side, addressing the treatment and management of wastewater to minimize environmental impact. Key Topics Covered: 1. Introduction to...

• A model development and experimental verification for a vapour microturbine with a permanent magnet synchronous generator

  Publikacja

  • W. Włodarski

  - APPLIED ENERGY - Rok 2019

  Vapour microturbines with permanent magnet synchronous generators are implemented in micropower plants for dispersed power generation systems. The dynamic model of such a microturbine set was developed and presented. The developed relations result from the generic equations. Experimental data for two different working medium were used for model verification. A microturbine set model was tested during the changes in the parameters...

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• Measurements of transmission properties of Acoustic Communication Channels

  Publikacja

  • I. Kochańska
  • H. Lasota

  - HYDROACOUSTICS - Rok 2012

  Tough transmission properties of shallow water acoustic channels (SWAC) highly limit the use of underwater acoustic communication (UAC) systems. An adaptive matching of modulation and signaling schemes to instantaneous channel conditions is needed for reliabledata communications. This creates, however, unique challenges for designers when compared to radio transmission systems. When communication system elements are in move, the...

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• Water Resources Management 2022/2023

  Kursy Online

  • T. Kolerski
  • A. M. Mustafa

  Water Resources Management as defined for purpose of this course includes both water use and water excess management. The fundamental water resources engineering processes are the hydrologic processes and the hydraulic processes. The common threads that relate to the explanation of these processes are the fundamentals of fluid mechanics. The hydrologic processes include rainfall, evaporation, infiltration, rainfall-runoff and routing,...

• Solventless sample preparation techniques based on solid- and vapour-phase extraction

  Publikacja

  • M. Urbanowicz
  • B. Zabiegała
  • J. Namieśnik

  - ANALYTICAL AND BIOANALYTICAL CHEMISTRY - Rok 2011

  The main objective of this review is to critically evaluate recent developments in solventless sample preparation techniques. The potential of a variety of sample preparation techniques based on solid- and vapour-phase extraction techniques is evaluated. Direct thermal extraction and derivatization processes to facilitate the extraction of analytes in different areas are included. The applicability, disadvantages and advantages...

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• Design analysis of combined gas-vapour micro power plant with 30 kW air turbine

  Publikacja

  • M. Piwowarski
  • K. Kosowski

  - POLISH JOURNAL OF ENVIRONMENTAL STUDIES - Rok 2014

  The article presents basic results of the design analysis of a combined gas-vapour micro power plant with a waste-heat boiler without exhaust reheat, working in the vapour section in the Organic Rankine Cycle (ORC) system. The analysis concerned working media most frequently used in those types of power plants and planned to be used in future. The object of the analysis was a micro power plant with a 30 kW gas (air) turbine for...

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• Design analysis of combined gas-vapour micro power plant with 30 kW air turbine

  Publikacja

  • M. Piwowarski
  • K. Kosowski

  - Rok 2013

  The article presents basic results of the design analysis of a combined gas-vapour micro power plant with a waste-heat boiler without exhaust reheat, working in the vapour section in the Organic Rankine Cycle (ORC) system. The analysis concerned working media most frequently used in those types of power plants and planned to be used in future. The object of the analysis was a micro power plant with a 30 kW gas (air) turbine for...

• Desalination and Water Treatment

  Czasopisma

  ISSN: 1944-3994 , eISSN: 1944-3986

• Topological extraordinary optical transmission

  Publikacja

  • K. Baskourelos
  • O. Tsilipakos
  • T. Stefański
  • S. F. Galata
  • E. N. Economou
  • M. Kafesaki
  • K. L. Tsakmakidis

  - Physical Review Research - Rok 2022

  Τhe incumbent technology for bringing light to the nanoscale, the near-field scanning optical microscope, has notoriously small throughput efficiencies of the order of 10^4-10^5 or less. We report on a broadband, topological, unidirectionally guiding structure, not requiring adiabatic tapering and, in principle, enabling near-perfect (∼100%) optical transmission through an unstructured single arbitrarily subdiffraction slit at...

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• Optical transmission of the Niobium thin films

  Dane Badawcze

  open access

  • M. Łapiński

  Niobium thin films with a thickness of 200nm were deposited n a Corning glass substrate by magnetron sputtering method. The optical transmission spectra in a visible light range were.recorded. Investigations showed a good optical transmission thru the layers for each samples, annealed at various temperatures. For measurements samples annealed at 500,...

• Water Resources and Industry

  Czasopisma

  ISSN: 2212-3717

• Mathematical Modelling of Drive System with an Elastic Coupling Based on Formal Analogy between the Transmission Shaft and the Electric Transmission Line

  Publikacja

  • A. Popenda
  • M. Lis
  • M. Nowak
  • K. Blecharz

  - ENERGIES - Rok 2020

  In the paper, the kinematic structure of the transmission shaft between the driving motor and the working mechanism is studied. The analysis is based on electrical and mechanical similarities. The equivalent circuits, typical for electrical systems, are defined for the transmission shaft concerned. Modelling of the transmission shaft based on a formal analogy between the transmission shaft and the electric transmission line is...

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• Cooperative Data Transmission in Wireless Vehicular Networks

  Publikacja

  • A. Marczak

  - Rok 2017

  The paper presents issues related to the cooperative transmission in wireless vehicular networks. Cooperative transmission involves the use of mobile terminals as relay stations to improve the transmission quality, improve network performance and reduce energy consumption. The paper presents the methods used to implement cooperative transmission and the types of cooperative networks.

• [ITiT] Transmission Channel in Radio Communication Systems

  Kursy Online

  • S. J. Ambroziak

  {mlang pl} Dyscyplina: informatyka techniczna i telekomunikacja Zajęcia fakultatywne dla doktorantów II roku Prowadzący:  dr hab. inż. Sławomir Ambroziak, prof. PG Liczba godzin: 15 Forma zajęć: wykład {mlang} {mlang en} Discipline: technical informatics and telecommunications Elective course for 2nd-year PhD students Academic teachers: dr hab. inż. Sławomir Ambroziak, prof. PG Total hours of training: 15 teaching hours Course...

• Transmission parameters of underwater communication channels

  Publikacja

  • H. Lasota
  • I. Kochańska

  - HYDROACOUSTICS - Rok 2011

  The underwater environment is tough and demanding as a communication channel for ultrasonic signals. The channel transmission characteristics in marine and inland waters depend much on local bathymetry and changing weather conditions. The architecture and performance of a reliable underwater acoustic communication (UAC) system should allow real-time adaptation of its transmission parameters to a large variety of possible channel...

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• Water Resources Management - Winter Semester 2021-2022

  Kursy Online

  • T. Kolerski
  • A. M. Mustafa

  Water Resources Management as defined for purpose of this course includes both water use and water excess management. The fundamental water resources engineering processes are the hydrologic processes and the hydraulic processes. The common threads that relate to the explanation of these processes are the fundamentals of fluid mechanics. The hydrologic processes include rainfall, evaporation, infiltration, rainfall-runoff and routing,...

• Secured wired BPL voice transmission system

  Publikacja

  • G. Debita
  • P. Falkowski-Gilski
  • M. Habrych
  • B. Miedziński
  • J. Wandzio
  • P. Jedlikowski

  - Scientific Journal of the Military University of Land Forces - Rok 2020

  Designing a secured voice transmission system is not a trivial task. Wired media, thanks to their reliability and resistance to mechanical damage, seem an ideal solution. The BPL (Broadband over Power Line) cable is resistant to electricity stoppage and partial damage of phase conductors, ensuring continuity of transmission in case of an emergency. It seems an appropriate tool for delivering critical data, mostly clear and understandable...

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• Direct-contact condensation from vapour- gas mixture in a spray ejector condenser for negative CO2 power plant

  Publikacja

  • D. Mikielewicz
  • M. Amiri
  • J. Mikielewicz

  - Rok 2022

  Direct-contact condensation of vapour containing the inert gas on a spray of subcooled liquid exists in a number of technical applications. For example, it may be found in the nuclear industry (e.g. pressurized jet under normal operating conditions, in safety analyses) or in the chemical industry (e.g. mixing-type heat exchanger, degasser, sea water desalting). The problem is also essential to modelling and analysis of some...

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• Transmission Quality Measurements in DAB+ Broadcast System

  Publikacja

  • P. Falkowski-Gilski
  • J. Stefański

  - Metrology and Measurement Systems - Rok 2017

  In the age of digital media, delivering broadcast content to customers at an acceptable level of quality is one of the most challenging tasks. The most important factor is the efficient use of available resources, including bandwidth. An appropriate way of managing the digital multiplex is essential for both the economic and technical issues. In this paper we describe transmission quality measurements in the DAB+ broadcast system....

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• Application of OFDM technique to underwater acoustic data transmission

  Publikacja

  • I. Kochańska
  • H. Lasota

  - HYDROACOUSTICS - Rok 2011

  Performances of underwater acoustic communication (UAC) digital systems are strongly related to specific transmission properties of the underwater channel. Depending on the characteristics of the channel, an architecture and modulation techniques are usually implemented that are known as reliable solutions for data transmission in difficult radio channels. The OFDM technique seems to be the most promising nowadays. The parameters...

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• Water Reuse

  Kursy Online

  w ramach tego kursu przekazywane są informacje związane z projektem prowadzonym przez Alinę Wargin.  Kierownikiem przedmiotu jest prof. Krzysztof Czerwionka.   This course provides information related to the project led by Alina Wargin. The head of the subject is prof. Krzysztof Czerwionka.