Poslední příspěvky

  • EXPERIMENTAL CHARACTERIZATION OF AN OVERDENSE PLASMA IN A COMPACT ION SOURCE 

    Autor: Castro , Giuseppe; Mascali , David; Romano , Francesco Paolo; Altana , Carmen; Caliri , Claudia; Celona , Luigi; Di Giugno , Rossella; Gambino , Nadia; Lanaia , Davide; Miracoli , Rosalba; Musumarra , Agatino; Neri , Lorenzo; Torrisi , Giuseppe; Gammino , Santo
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
    Electron Cyclotron Resonance Ion Sources (ECRIS) are compact plasma-based machines able to feed particle accelerators with high intensity beams of multi-charged ions. ECRIS plasmas are density-limited, since they are ...
  • EFFECT OF PVA MODIFICATION ON PROPERTIES OF CEMENT COMPOSITES 

    Autor: Topič , Jaroslav; Prošek , Zdeněk; Indrová , Kateřina; Plachý , Tomáš; Nežerka , Václav; Kopecký , Lubomír; Tesárek , Pavel
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
    Polymers are used for modification of the cement-based composites and others building materials since the thirties of 20th century. Based on the conclusions of recent studies, it is assumed that even water soluble polymers ...
  • MICROSTRUCTURE DESCRIPTION AND MICROMECHANICAL PROPERTIES OF SPRUCE WOOD 

    Autor: Prošek , Zdeněk; Králík , Vlastimil; Topič , Jaroslav; Nežerka , Václav; Indrová , Kateřina; Tesárek , Pavel
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
    The knowledge about the microstructure and morphology of individual phases also allows an artificial modification of the material, or its processing, to produce engineered products with required properties. The purpose of ...
  • HIGHTEMPERATURE GASIFICATION OF RDF WASTE AND MELTING OF FLY ASH OBTAINED FROM THE INCINERATION OF MUNICIPAL WASTE 

    Autor: Lázár , Marián; Čarnogurská , Mária; Lengyelová , Marta; Korba , Ján
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
    Objective of this paper is to describe innovative solutions of thermal processing of selected components of municipal waste (so-called RDF waste) using low-ionized depended plasma arc generated by a progressive and promising ...
  • ELECTROSTATIC ION THRUSTERS TOWARDS PREDICTIVE MODELING 

    Autor: Duras , Julia; Kalentev , Oleksander; Schneider , Ralf; Matyash , Konstantin; Lüskow Felix, Karl; Geiser , Jürgen
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
    For satellite missions, thrusters have to be qualified in large vacuum vessels to simulate space environment. One caveat of these experiments is the possible  modification of the beam properties due to the interaction of ...
  • INITIAL FOLLOWUP OF OPTICAL TRANSIENTS WITH COLORES USING THE BOOTES NETWORK 

    Autor: Caballero-Garcia D., Maria; Jelinek , M.; Castro-Tirado , A.; Hudec , R.; Cunniffe , R.; Rabaza , O.; Sabau-Graziati , L.
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
    The Burst Observer and Optical Transient Exploring System (BOOTES) is a network of telescopes that allows the continuous monitoring of transient astrophysical sources. It was originally devoted to the study of the optical ...
  • OPERATION MODES AND CHARACTERISTICS OF PLASMA DIPOLE ANTENNA 

    Autor: Bogachev Nikolaevich, Nikolay; Bogdankevich , Irina L.; Gusein-Zade , Namik G.; Sergeychev , Konstantin F.
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
    Existence modes of  surface electromagnetic wave on a plasma cylinder, operating modes and characteristics of the plasma antenna were studied in this paper. Solutions of the dispersion equation of surface wave were obtained ...
  • MODERNIZATION FEATURES OF A VACUUM INSTALLATION BASED ON LOWPRESSURE ARC DISCHARGE FOR COMPOSITE TINCU LAYERS FORMATION 

    Autor: Tsyrenov , Dmitriy; Semenov , Aleksandr; Smirnyagina , Natalia
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
    A hybrid technology for forming composite TiN-Cu layers under the combined influence of a magnetron and low pressure arc discharges has been designed. The parameters of the plasma generator have been studied. The technological ...
  • ENERGY EFFICIENCY OF PLANAR DISCHARGE FOR INDUSTRIAL APPLICATIONS 

    Autor: Kelar , Jakub; Čech , Jan; Slavíček , Pavel
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
    Diffuse Coplanar Surface Barrier Discharge has proven its capabilities as an industry-ready plasma source for fast, in-line and efficient plasma treatment at atmospheric pressure. One parameter required by industry is ...
  • COMPARISON OF COOLING SCHEMES FOR HIGH HEAT FLUX COMPONENTS COOLING IN FUSION REACTORS 

    Autor: Domalapally , Phani Kumar; Entler , Slavomir
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
    Some components of the fusion reactor receives high heat fluxes either during the startup and shutdown or during the operation of the machine. This paper analyzes different ways of enhancing heat transfer using helium and ...
  • CFD ANALYSIS OF THE SPACER GRIDS AND MIXING VANES EFFECT ON THE FLOW IN THE CHOSEN PART OF THE TVSAT FUEL ASSEMBLY 

    Autor: Juklíček , Jakub; Železný , Václav
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
    CFD is a promising and widely spread tool for a flow simulation in nuclear reactor fuel assemblies. One of the limiting factors is the complicated geometry of a spacer grid. It leads to the computational mesh with high ...
  • SIMULATION MODEL BASED ON REGIONAL DEVELOPMENT AND VIRTUAL CHANGES 

    Autor: Dlask , Petr
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
    This paper reports on change as an indicator that can be provide more focused goals in studies of development. The paper offers an answer to the question: How might management gain information from a simulation model and ...
  • EFFECT OF TUBE PITCH ON HEAR TRANSFER IN SPRINKLED TUBE BUNDLE 

    Autor: Kracík , Petr; Pospíšil , Jiří
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
    Water flowing on a sprinkled tube bundle forms three basic modes: the Droplet mode (the liquid drips from one tube to another), the Jet mode (with an increasing flow rate, the droplets merge into a column) and the Membrane ...
  • UNSTEADY FLOW OF THIXOTROPIC COLLAGEN SUBSTANCE IN PIPES 

    Autor: Žitný , Rudolf; Landfeld , Aleš; Skočilas , Jan; Štancl , Jaromír; Flegl , Vlastimil; Houška , Milan
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
    Unsteady flow of thixotropic liquid in pipes is solved by 1D and 2D numerical methods using the same constitutive equation — the only difference is in the radial diffusion of the structural parameter. Comparison shows that ...
  • EFFECTS OF INITIAL MOISTURE CONTENT ON THE PRODUCTION AND QUALITY PROPERTIES OF SOLID BIOFUEL 

    Autor: Matúš , Miloš; Križan , Peter; Beniak , Juraj; Šooš , Ľubomír
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
    The moisture content of densified biomass is a limit parameter influencing the quality of the solid biofuel. It influences its calorific value, density, mechanical strength and dimensional stability as well as the production ...
  • CONDENSATION OF WATER VAPOR IN A VERTICAL TUBE CONDENSER 

    Autor: Havlík , Jan; Dlouhý , Tomáš
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
    This paper presents an analysis of heat transfer in the process of condensation of water vapor in a vertical shell-and-tube condenser. We analyze the use of the Nusselt model for calculating the condensation heat transfer ...
  • CHANGES IN THE SURFACE LAYER OF ROLLED BEARING STEEL 

    Autor: Zemčík , Oskar; Sedlák , Josef; Chladil , Josef
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
    This paper describes changes observed in bearing steel due to roller burnishing. Hydrostatic roller burnishing was selected as the most suitable method for performing roller burnishing on hardened bearing steel. The ...
  • PYROLYSIS OF BROWN COAL USING A CATALYST BASED ON W–Ni 

    Autor: Jílková , Lenka; Ciahotný , Karel; Kusý , Jaroslav
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
    Tars from pyrolysis of brown coal can be refined to obtain compounds suitable for fuel production. However, it is problematic to refine the liquids from brown coal pyrolysis, because high molecular compounds are produced, ...
  • ELECTRODYNAMIC LOUDSPEAKERDRIVEN ACOUSTIC COMPRESSOR 

    Autor: Šoltés , Martin; Červenka , Milan
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
    An acoustic compressor is  built  using the acoustic resonator which shape was optimized for a maximum acoustic pressure amplitude and a low-cost compression driver.  Acoustic compressor is built  by installing  a suction ...
  • COMPARISON OF CLASSICAL AND INTERACTIVE MULTIROBOT EXPLORATION STRATEGIES IN POPULATED ENVIRONMENTS 

    Autor: Kalde , Nassim; Simonin , Olivier; Charpillet , François
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
    Multi-robot exploration consists in coordinating robots for mapping an unknown environment. It raises several issues concerning task allocation, robot control, path planning and communication. We study exploration in ...

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