Filters
total: 2426
-
Catalog
- Publications 1852 available results
- Journals 225 available results
- Conferences 6 available results
- Publishing Houses 4 available results
- People 49 available results
- Inventions 1 available results
- Projects 10 available results
- Laboratories 1 available results
- e-Learning Courses 38 available results
- Events 15 available results
- Open Research Data 225 available results
displaying 1000 best results Help
Search results for: WIRED MEDIUM
-
Spectral measurement of birefringence using particle swarm optimization analysis
PublicationThe measurement of birefringence is useful for the examination of both technical and biological objects. One of the main problems is that the polarization state of light in birefringent media changes periodically. Without the knowledge of the period number, the birefringence of a given medium cannot be determined reliably. We propose to analyse the spectrum of light in order to determine the birefringence. We use a Particle Swarm...
-
The joint effect of electrical conductivity and surface oxygen functionalities of carbon supports on the oxygen reduction reaction studied over bare supports and Mn–Co spinel/carbon catalysts in alkaline media
Publication -
Wydawnictwo Medyczne "Alfa-Medica Press"
Publishing Houses -
40GbE und 100GbE als neue Generation des Ethernets
PublicationDie Erörterung der Hauptaspekte bei den neusten Entwicklungen des Ethernets bildet den Kern dieser Arbeit. Zuerst wird auf Anforderungen (teilweise bei Beibehaltung alter Eigenschaften, z.B. Vollduplex, Rahmenformat, BER=10-12, u.a.), für die neuen Versionen des Ethernets eingegangen. Dann folgt die Darstellung der Konzepte und der Lösungsmöglichkeiten innerhalb der physikalischen Schicht. Dem Thema "Verkabelung" (Kupfer, LWL,...
-
Experimental investigations and simulations of the microturbine unit with permanent magnet generator
PublicationIn dispersed power generation, low power devices are used for local combined generating of heat end electric power. There are developing concepts of micropower plants with electric generators driven by steam or gas microturbines. The paper presents the results of an experimental investigations of the microturbine set consists of the turbine with partial admission, permanent magnet generator and three phase AC-to-DC rectifier. The...
-
Monika Wilamowska-Zawłocka dr hab. inż.
PeopleDr Monika WILAMOWSKA-ZAWŁOCKA obtained her PhD in Chemistry in 2011 at Faculty of Chemistry, Gdańsk University of Technology. She then was a post-doctoral fellow at Technische Universität Darmstadt, Germany. Since 2013 she has worked at Gdańsk University of Technology, since 2019 as an Associate Professor. Her research interests include composite materials for energy storage devices, especially for lithium-ion and sodium-ion batteries,...
-
Sieć sensorowa do rejestracji drgań górnej sieci trakcyjnej w celach diagnostyki eksploatacyjnej
PublicationWraz ze wzrostem prędkości kolejowych pojazdów elektrycznych zwiększają się wymagania utrzymania sieci trakcyjnej w odpowiednim stanie technicznym. Ciągły monitoring i diagnostyka pozwalają wykrywać pogarszającą się jakość odbioru prądu z sieci jezdnej. Jedną z metod jest umieszczenie czujników przyspieszenia na przewodzie jezdnym. Analiza przebiegu przyspieszenia pozwala określić jakość współpracy sieci jezdnej z pantografem....
-
Self-supporting LSFO films for bolometers made with LTCC technology
PublicationOpisano metodę wytwarzania przewodzących, tlenkowych warstw ceramicznych tlenków lantanowo-strontowo żelazowych (LSFO) technologią low temperature co-fired ceramics (LTCC). Przedstawiono rezultaty pomiarów parametrów warstw pod kątem przydatności do produkcji detektorów IR.
-
Zarządzanie organizacją nowych mediów
e-Learning Courses -
Przesył mediów i energii
e-Learning Courses -
Lower rim substituted tert-butylcalix[4]arenes (II). Complexing ability of5,11,17,23-tetra-tert-butyl-25,26,27,28-tetrakis-O-(piperidinylcarbonyl)me- thylenecalix[4]arene. The crystal structures of the ligand and its sodium complex
PublicationSyntezowano kompleksy wymienionego w tytule liganda z chlorkiem sodu i azotanami itru(III), lantanu(III), samaru(III) i gadolinu(III) w reakcji liganda i odpowiedniej soli, które charakteryzowano za pomocą widm IR, UV-vis,1H NMR, FAB-MS, a także za pomocą analizy elementarnej. W reakcji wymiany z kompleksu z sodem otrzymywano kompleksy z lantanowcami. Określono strukturę krystaliczną wolnego liganda i jego kompleksu z sodem za...
-
Alicja Konczakowska prof. dr hab. inż.
People -
The Influence of Cold Atmospheric Pressure Plasma-Treated Media on the Cell Viability, Motility, and Induction of Apoptosis in Human Non-Metastatic (MCF7) and Metastatic (MDA-MB-231) Breast Cancer Cell Lines
Publication -
Share of people working in the enterprise sector by ownership sector at the end of 2016 (%).
Open Research DataThe dynamic development of small and medium-sized enterprises, which was observed in the past century - in particular in the past two decades - is the phenomenon of the development of the world economy intriguing many researchers and research centers. These figures present the share of workforce according to the ownership sector at the end of 2016.
-
Samonośne warstwy LSFO na bolometry wykonane technologią LTCC
PublicationOpisano sposób produkcji ceramicznych, przewodzących warstwtypu perowskitu z niestechiometrycznych tlenków lantanowo-strontowo żelazowych (LSFO) wykonanych technologią LTCC )low temperature co-fired ceramics). Zaprezentowano pomiary parametrów tych warstw, charakteryzujących ich przydatność do produkcji bolometrów.
-
Passive sampling as a tool for obtaining reliable analyticalinformation in environmental quality monitoring
PublicationSpośród technik pobierania próbek analitów technika dozymetrii pasywnej wydaje się być interesującą alternatywą w stosunku do powszechnie stosowanych technik dynamicznych. Dozymetria pasywna łączy w sobie etap pobierania próbki z etapem izolacji i wzbogacania analitów, które są zatrzymywane w odpowiednim medium zatrzymującym. Prowadzi to do znacznego uproszczenia operacji analitycznych wykonywanych in situ. W odróżnieniu od aktywnych...
-
Pedagogika, Psihologia ta Mediko-Biologicni Problemi Fizicnogo Vihovanna i Sportu
Journals -
Revista del Cuerpo Medico del Hospital Nacional Almanzor Aguinaga Asenjo
Journals -
Computer-Aided Calculations of Earth Potential Rise in High Voltage Overhead Lines
PublicationHigh voltage overhead power lines with earth wires comprise towers made of conductive material. Some towers are in locations where people can be expected to be either for a long time or for a short time but very frequently. Evaluation of shock hazard near such towers requires calculation of line-to-earth short-circuit current, earth current and especially earth potential rise. Number of towers in high voltage power lines can exceed...
-
Performance Characteristics of a Micro-Turbine
PublicationIn the paper a design of a multi-stage micro-turbine with partial admission of all the stages is described in detail and the results of particular experimental investigations and numerical calculations are shown, followed by conclusions. The co-generative micro-power plant with the HFE7100 as a working medium was designed and built for experimental investigations. The values of the main cycle parameters were as follows:heat output:...
-
Performance Characteristics of a Micro-turbine, International
Publication. In the paper a design of a multi-stage micro-turbine with partial admission of all the stages is described in detail and the results of particular experimental investigations and numerical calculations are shown, followed by conclusions. The co-generative micro-power plant with the HFE7100 as a working medium was designed and built for experimental investigations. The values of the main cycle parameters were as follows:- heat...
-
Photolytic and Photocatalytic Recreational Water Treatment
PublicationDisinfection is one of the most important steps during recreational water treatment. Nevertheless, disinfection by-products are formed by conventional disinfectants, which pose several health threats. The concentration of disinfection by-products can be decreased by photolytic and photocatalytic treatment. Medium-pressure mercury lamp, UV-LEDs and solar irradiation were investigated and evaluated considering emitted wavelength,...
-
Design of a SiC based triple active bridge ceil for a multi-megawatt DC-DC converter
PublicationThe paper describes the design methodology of a novel Triple Active Bridge cell used as the building block for modular DC-DC converters. The intended application is for Medium Voltage Direct Current grids, such as the DC collector for offshore wind farms. The latest generation of SiC MOSFET semiconductors is utilized to operate in the medium frequency range while optimizing the efficiency. The dimensioning of the main cell components,...
-
Phenotypic consequences of the LYS4 gene disruption in Candida albicans
PublicationThe main scientific purpose of our studies was to verify the hypothesis that homoaconitase (HA) from Candida albicans, an enzyme catalyzing a second step of the α-aminoadipate pathway (AAP) of L-Lys biosynthesis may become a new target for antifungal chemotherapy. Previous studies indicated that the A. fumigatus mutant lacking the functional lysF gene, encoding HA, exhibited attenuated virulence in a low-dose mouse infection model...
-
International Conference on Semantic and Digital Media Technologies
Conferences -
Testing of DES toxicity towards Candida subhashii
Open Research DataDataset presents results of testing toxicity of selected DES solutions in mineral salt medium towards Candida subhashii.
-
The number of active enterprises in Poland in 1997-2014
Open Research DataAfter Poland joined the group of countries associated in the European Union and through participation in numerous economic and political organizations (including the World Trade Organization, OECD), as well as the commencement of trade exchange with virtually all countries of the world, Polish entrepreneurs and managers struggle with completely problems...
-
Share of gross value added generated by enterprises in GDP
Open Research DataAfter Poland joined the group of countries associated in the European Union and through participation in numerous economic and political organizations (including the World Trade Organization, OECD), as well as the commencement of trade exchange with virtually all countries of the world, Polish entrepreneurs and managers struggle with completely problems...
-
Computational analysis of power-law fluids for convective heat transfer in permeable enclosures using Darcy effects
PublicationNatural convection is a complex environmental phenomenon that typically occurs in engineering settings in porous structures. Shear thinning or shear thickening fuids are characteristics of power-law fuids, which are non-Newtonian in nature and fnd wide-ranging uses in various industrial processes. Non-Newtonian fuid fow in porous media is a difcult problem with important consequences for energy systems and heat transfer. In this...
-
Wioletta Gorczewska-Langner dr inż.
People -
Acceleration waves in the nonlinear micromorphic continuum
PublicationWithin the framework of the nonlinear elastic theory of micromorphic continua we derive the conditions for propagation of acceleration waves. An acceleration wave, also called a wave of weak discontinuity of order two, can be treated as a propagating nonmaterial surface across which the second derivatives of the placement vector and micro-distortion tensor may undergo jump discontinuities. Here we obtain the acoustic tensor for...
-
Experimental verification of visual method for measuring displacements of contact line elements
PublicationThe increase of rail vehicles speed, as well as the increase of their power, puts high demands on the power delivery system for traction vehicles The most critical point in the vehicle's power supply circuit is the contact between the current collector and contact wires. Ensuring a reliable co-operation of the current collector and contact line, requires technical development...
-
Optymalizacja warunków pracy grubowarstwowych bolometrów LSFO
PublicationOpisano sposób produkcji bolometrów wykorzystujących ceramiczne, przewodzące warstwy typu perowskitu z niestechiometrycznych tlenków lantanowo-strontowo żelazowych (LSFO) wykonanych technologią LTCC (Low Temperature Co-fired Ceramics). Zaprezentowano wyniki pomiarów parametrów tych bolometrów oraz pozwalające na wybór optymalnych warunków pracy.
-
Theoretical analysis and experimental tests of tilting pad journal bearings with shoes made of polymer material and low-boiling liquid lubrication
PublicationSelecting the appropriate bearing system for the rotor requires a good knowledge of the available solutions and the operating conditions of the machine. For newly designed machinery operating in adverse conditions, selecting bearings that ensure correct and long-lasting operation can be extremely challenging. Difficulties in- crease when the machine’s operating parameters are beyond the technical capabilities of available technical solutions....
-
Dynamic impedance data for various carboxylic acids corrosion inhibition of aluminium in alkaline media (pH=11)
Open Research DataThis dataset contains the results of Dynamic Electrochemical Impedance Spectroscopy (DEIS) carried out in galvanostatic mode under iDC=0, carried out in order to define the corrosion inhibition effect of various studied carboxylic acids: citric acid, malic acid, maleic acid, succinic acid, tartaric acid, carballylic acid, and serine. The experiment...
-
X-ray Photoelectron Spectroscopy studies of citric acid adsorption on aluminium alloy 5754 in alkaline media
Open Research DataThis dataset contains the results of high-resolution XPS obtained during evaluation of high corrosion inhibition efficiency of citric acid towards aluminium alloy 5754 in bicarbonate buffer pH=11. The exposition duration of samples to electrolytic environment was 100 min. Each sample was exposed at different citric acid concentration ranging from 0...
-
X-ray Photoelectron Spectroscopy studies of various carboxylic acids adsorption on aluminium alloys in alkaline media
Open Research DataThis dataset contains the results of high-resolution XPS studies obtained during evaluation of high corrosion inhibition efficiency of various carboxylic acids towards aluminium alloy 5754 in bicarbonate buffer pH=11.
-
INTERNATIONALIZATION OF ENTERPRISES IN KAZAKHSTAN AS AN EXAMPLE OF INTERNATIONALIZATION PATTERNS IN THE AREA OF THE EURASIAN ECONOMIC UNION.
PublicationThe article aims to show the specificity of the internationalization of Kazakh enterprises, in particular, the pace, scope, intensity, and forms of their internationalization in the Eurasian Economic Union (EEU). The EEU is a relatively young grouping that was established in 2015 by the Republic of Armenia, the Republic of Belarus, the Republic of Kazakhstan, the Kyrgyz Republic and the Russian Federation. EEU creators try to give...
-
3D intact knee model used in analysis of the medial meniscus biomechanics in the osteoarthritic knee joint - input text file for computation
Open Research DataThe finite element method was used to simulate the stance phase of the gait cycle. An intact knee model with original geometry and material parametetrs was prepared based on magnetic resonance scans of the left knee joint of a healthy volunteer. The file was created in Abaqus 6.14-2, but can be read in a text editor.
-
Local material symmetry group for first- and second-order strain gradient fluids
PublicationUsing an unified approach based on the local material symmetry group introduced for general first- and second-order strain gradient elastic media, we analyze the constitutive equations of strain gradient fluids. For the strain gradient medium there exists a strain energy density dependent on first- and higher-order gradients of placement vector, whereas for fluids a strain energy depends on a current mass density and its gradients....
-
Application of advanced spectroscopic methods in the assessment of the leachability degree of hazardous elements from the matrix of cellular concretea
PublicationDue to its structure, autoclaved cellular concrete exhibits good insulating properties with relatively high compressive strength values. It is increasingly used in construction because of its economic attractiveness. Autoclaved cellular concrete is mainly used in interior structure layers, and therefore its potential exposure to heavy metal leaching from the matrix may be related to the presence of a high pH medium from other materials...
-
Examples of numerical simulations of two-dimensional unsaturated flow with VS2DI code using different interblock conductivity averaging schemes
PublicationFlow in unsaturated porous media is commonly described by the Richards equation. This equation is strongly nonlinear due to interrelationships between water pressure head (negative in unsaturated conditions), water content and hydraulic conductivity. The accuracy of numerical solution of the Richards equation often depends on the method used to estimate average hydraulic conductivity between neighboring nodes or cells of the numerical...
-
The structure of the enterprise sector by size in Poland and the EU-28 in 2017
Open Research DataEnterprises from the SME sector constitute the majority of companies in Poland and in the European Union countries. However, the structure of domestic enterprises in terms of size and industry differs from the EU average. Taking into account the nature of the business in Poland, more companies operate in trade, and lower in services. However, it should...
-
Hybridization of the FDTD method with use of the discrete Green's function
PublicationIn this contribution, a hybrid technique is presented which combines the finite-difference time-domain (FDTD) method and the discrete Green's function (DGF) formulation of this method. FDTD is a powerful technique for the analysis of complex penetrable objects but its application is not efficient when the computational domain includes many free-space cells. Therefore, the hybrid method was developed which is applicable to complex...
-
Performance of acicular grindable thermocouples for temperature measurements at sliding contacts
PublicationThe present study investigates the performance of acicular grindable thermocouples based on a constantan wire / steel hollow cylinder construction. The experiments showed that the measuring junction electrical resistance, temperature–voltage characteristic, measuring junction rise time and signal noise standard deviation of the acicular thermocouples are comparable to those of conventional J-type thermocouples with bare wire diameter...
-
Raman spectroscopy analysis of synthesized sol-gel silica coatings
Open Research DataThese data contains Raman spectra of silica coatings synthesized using sol-gel method A and B, which were described with publication associated with this dataset. Raman scattering was measured with a Renishaw microRaman spectrometer (830 nm).
-
Analysis of magnetic field inside thin-layer ferromagnetic objects
PublicationResults of the numerical analysis of the magnetic field inside an infinitely long, thin-layer ferromagnetic pipe with and without a barrier were presented in this paper. Two wires with current symmetrically placed on two sides of the pipe are the sources of magnetic field. Numerical calculations for the quasi-steady state for chosen frequency band were carried out in the Flux 2D.
-
The viscometric evaluation of the gelation rate the chitosan-metal oxide hydrogel systems.
Open Research DataThe dataset shows the change in the viscosity of a hydrogel medium over time. Viscometric measurement was used as a universal method for determining the cross-linking rate of chitosan hydrogel using metal oxides or other solutions with a negative net charge. The method was prepared as a method of predicting the kinetics of additive manufacturing using...
-
Dozymetria pasywna - dogodne narzędzie do badania zanieczyszczeń środowiska wodnego
PublicationDozymetry pasywne stanowią coraz powszechniej wykorzystywane narzędzie do pobierania próbek analitów ze środowiska wodnego. Pobieranie analitów przy użyciu próbników pasywnych następuje na drodze swobodnego transportu masy przez membranę do medium zatrzymującego na skutek różnicy potencjałów chemicznych związków w medium zatrzymującym i środowiskiem wodnym, w którym umieszczany jest próbnik. Próbniki umieszczane są w wodzie na...
-
Karolina Klesiewicz dr
People