Browsing Ústav elektrotechnologie by Title
Now showing items 1-20 of 32
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Analysis of the Degradation of Pearlitic Steel Mechanical Properties Depending on the Stability of the Structural Phases
(MDPI, 2023-01-05)The paper is focused on analysing the pearlitic steel phase transformations and their influence on the mechanical properties. The intention is to perform a detailed analysis of the heat treatment process using the exact ... -
Anisotropic Conductivity of Rat Head Phantom and its Influence on Electroencephalogram Source Localization
(IEEE, 2022-01-20)In this paper we deal with a simplified anisotropic rat head phantom development and the investigation of the influence of the anisotropic white matter on electroencephalogram source localization. The proposed phantom is ... -
Application of Prandtl’s Theory in the Design of an Experimental Chamber for Static Pressure Measurements
(MDPI, 2021-09-02)Pumping in vacuum chambers is part of the field of environmental electron microscopy. These chambers are separated from each other by a small-diameter aperture that creates a critical flow in the supersonic flow regime. ... -
Availability of Suitable Raw Materials Determining the Prospect for Energy Storage Systems Based on Redox Flow Batteries
(Faculty of Mining, Ecology, Process Control and Geotechnologies (FBERG), Technical University of Kosice, 2018-04-30)Successful large-scale deployment and manufacturing of newly designed products depends on the availability of raw materials and therefore even fundamental research on electrochemical energy sources cannot ignore the need ... -
Carrageenan as an Ecological Alternative of Polyvinylidene Difluoride Binder for Li-S Batteries
(MDPI, 2021-09-26)Lithium-sulfur batteries are one of the most promising battery systems nowadays. However, this system is still not suitable for practical application because of the number of shortcomings that limit its cycle life. One of ... -
Characterization of the Embryogenic Tissue of the Norway Spruce Including a Transition Layer between the Tissue and the Culture Medium by Magnetic Resonance Imaging
(De Gruyter Open, 2017-02-25)The paper describes the visualization of the cells (ESEs) and mucilage (ECMSN) in an embryogenic tissue via magnetic resonance imaging (MRI) relaxometry measurement combined with the subsequent multi-parametric segmentation. ... -
Comparisons Using Methods of Continuum Mechanics and Monte Carlo at Differentially Pumped Chamber.
(AiMt University of Defence, 2016-10-04)The article deals with the analysis of gas flows in pumped canals in differential pumped chamber of the Environmental Scanning Electron Microscope (ESEM). The article compares and verifies existing results of differentially ... -
The Corrosion Resistance of Hard Anodised EN AW 7075 T6 Alloy
(Electrochemical Society, 2021-08-22)In this paper, commercially cold-rolled and artificial aged EN AW 7075 T6 alloy has been used. To ensure increased corrosion resistance, surface hardness, scratching resistance, and aesthetic features, this aluminium alloy ... -
The Effect of a Spiral Gradient Magnetic Field on the Ionic Conductivity of Water
(MDPI, 2017-09-02)We discuss the experimental verification of changes in the structure of a liquid water sample inserted in a special spiral “gradient” magnetic field. The magnetic flux components are characterized by a high degree of ... -
Effect of Compression on Negative Lead-Acid Battery Electrodes Doped with Glass Fibres
(ESG, 2015-11-04)Lead-acid battery with negative electrodes doped with microscopic glass fibres are comparable with those doped with carbon or titanium dioxide during accelerated PSoC cycling and reach a long cycle life. The performance ... -
Effect of Heat Treatment on the Corrosion and Mechanical Properties of Electrolytical Composite Ni-B Coatings
(ESG, 2014-08-01)Electrodeposition of composite coatings with nickel matrix and boron micro-particles was investigated. Nickel - boron layers were deposited potentiodynamically at 12.5 mV/s on cylindrical samples prepared from iron powder ... -
Electrochemical Behaviour of Nanoscale Ni Modified Screen-Printed Carbon Electrodes in Corrosion Tests and Hydrogen Evolution Electrocatalysis
(ESG, 2015-09-01)Corrosion resistence and electrocatalytic aktivity were examined for Ni nanoparticles ( NiNPs) coated screen printed carbon based electrodes ( SPCEs) being a novel alternative to unmodified electrodes. Corrosion as well ... -
Energy Harvesting Using Thermocouple and Compressed Air
(MDPI, 2021-09-09)In this paper, we describe the possibility of using the energy of a compressed air flow, where cryogenic temperatures are achieved within the flow behind the nozzle, when reaching a critical flow in order to maximize the ... -
Imaging of native early embryogenic tissue of Scots pine (Pinus sylvestris L.) by ESEM.
(De Gruyter Open Ltd, 2015-01-01)Environmental scanning electron microscopy enables the investigation of uncoated pine early embryogenic tissue samples in situ. The samples were examined under low vacuum conditions (air pressure 550 Pa) at a temperature ... -
The importance of observation of structural changes of lead acid battery active mass in special applications in the mining industry
(Faculty of Mining, Ecology, Process Control and Geotechnologies (FBERG), Technical University of Kosice, 2015-10-26)Aby bylo možné používat olověných akumulátorů v mimořádně obtížných podmínkách v těžebním průmyslu, je velmi důležité pochopit děje, ke kterým dochází při trakčním provozu těžebních vozíků nebo při používání pomocného ... -
Improved Electrochemical Performance of NCM Cathode Materials Based on the Modification of the Salt Content in the Electrolyte
(IOP Publishing, 2019-11-25)In this work, NCM cathode materials, for Li-ion batteries, were synthesized via a solid-state reaction routine, in which manganese (IV) dioxide, nickel (II) oxide, cobalt (II) hydroxide and lithium hydroxide monohydrate ... -
Improved Electrochemical performance of NMC Cathode Materials Based on the modification of the Salt Content in the Electrolyte
(2019-08-25)Thelayered LiMO2 (M=Mn,Co,andNidenotedasNCM),havebeenextensivelystudiedandconsideredtobeapromisingcandidateofcathodematerialforfutureLIBsbecauseoftheirhightheoreticalcapacity,lowcost,safety,highcyclingstabilityandlowtoxi ... -
An In Vitro Corrosion Study of Open Cell Iron Structures with PEG Coating for Bone Replacement Applications
(MDPI, 2018-06-28)Iron-based substrates with polyethylene glycol coating were prepared as possible materials for biodegradable orthopedic implants. Biodegradable materials that provide mechanical support of the diseased tissue at the time ... -
Influence of New Aprotic Electrolytes on Negative Electrode Materials for Lithium-ion Batteries
(ESG, 2015-07-01)This paper briefly describes experiments which investigate mutual compatibility of aprotic solvents and negative electrode materials. The work follows the current trend of enhancing fire safety by using new kinds of aprotic ... -
Issues Concerning Manufacture and Recycling of Lead
(MDPI, 2023-06-01)This article gives an overview of historical and present uses of lead against the backdrop of gradual realization that lead is an environmental hazard. In this paper the lead in the lead-acid batteries is investigated from ...