Browsing Ústav elektrotechnologie by Issue Date
Now showing items 1-20 of 32
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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 ... -
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 ... -
Negative lead-acid battery electrodes doped with glass fibres
(ESG, 2015-03-01)Negative lead-acid battery electrodes doped with microscopic glass fibres show similar properties during accelerated partial state of charge cycling as those doped with carbon or titanium dioxide, including a long cycle ... -
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 ... -
Low-frequency noise measurements used for quality assessment of GaSb based laser diodes prepared by molecular beam epitaxy
(Faculty of Electrical Engineering and Information Technology of the Slovak University of Technology, 2015-08-01)The paper reports on a non-destructive method of reliability prediction for semiconductor lasers diodes GaSb based VCSE. Transport and noise characteristic of forward biased were measured in order to evaluate the new MBE ... -
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 ... -
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 ... -
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 ... -
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 ... -
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. ... -
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 ... -
Polyelectrolyte Complex Beads by Novel Two-Step Process for Improved Performance of Viable Whole-Cell Baeyer-Villiger Monoxygenase by Immobilization.
(MDPI, 2017-11-21)A novel immobilization matrix for the entrapment of viable whole-cell Baeyer–Villiger monooxygenase was developed. Viable recombinant Escherichia coli cells overexpressing cyclohexanone monooxygenase were entrapped in ... -
Methods for recycling photovoltaic modules and their impact on environment and raw material extraction
(Acta Montanistica Slovaca, 2017-12-11)This work deals with methods of recycling of photovoltaic modules and evaluates contribution of recycling to the environment and reduction of raw materials extraction. The article describes the materials needed to manufacture ... -
Supercapacitors: Properties and applications
(Elsevier, 2018-03-26)Akumulace a skladování energie je jedním z nejdůležitějších témat naší doby. Tento příspěvek představuje téma superkapacitorů (SC) jako zařízení pro ukládání energie. Supercapacitors představují alternativu k běžnému ... -
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 ... -
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 ... -
Reverse taxonomy applied to the Brachionus calyciflorus cryptic species complex: Morphometric analysis confirms species delimitations revealed by molecular phylogenetic analysis and allows the (re) description of four species.
(PLOS, 2018-09-20)The discovery and exploration of cryptic species have been profoundly expedited thanks to developments in molecular biology and phylogenetics. In this study, we apply a reverse taxonomy approach to the Brachionus calyciflorus ... -
Sodno-iontové akumulátory - budoucnost a aktuální vývoj
(NZEE, 2019-05-15)The lithium-ion technology is widely known and spread technology. The based of this technology lies on transport of lithium ions during charging or discharging from one electrode to the other, this principle is call “rocking ... -
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 ... -
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 ...