Recent Submissions

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

    Author: 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 ...
  • FEATURES OF STRUCTURE FORMATION AND CHANGES IN THE MECHANICAL PROPERTIES OF CAST AlMgSiMn ALLOY WITH THE ADDITION OF Ti+Zr 

    Author: Trudonoshyn , Oleksandr; Puchnin , Maxim; Mykhalenkov , Kostiantyn
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
    The as-cast and heat-treated structure of permanent mould castings of AlMg5Si2Mn alloys with different contents of Ti has been investigated by differential scanning calorimetry, hardness and microhardness measurements, ...
  • COMPARISON OF CLASSICAL AND INTERACTIVE MULTIROBOT EXPLORATION STRATEGIES IN POPULATED ENVIRONMENTS 

    Author: 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 ...
  • EFFECT OF THE ADDITION OF LI ON THE STRUCTURE AND MECHANICAL PROPERTIES OF HYPOEUTECTIC AlMg2Si ALLOYS 

    Author: Prach , Olena; Horník , Jakub; Mykhalenkov , Kostiantyn
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
    Alloys with various contents of Li were studied by means of  differential scanning calorimetry (DSC), transmission electron microscopy (TEM) and energy dispersive X-Ray microanalysis (EDX).The TEM investigations revealed ...
  • COMPARISON OF EXPLORATION STRATEGIES FOR MULTIROBOT SEARCH 

    Author: Kulich , Miroslav; Juchelka , Tomáš; Přeučil , Libor
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
    Searching for a stationary object in an unknown environment can be formulated as an iterative procedure consisting of map updating, selection of a next goal and navigation to this goal. It finishes when the object of ...
  • A SYSTEM AND A DEVICE FOR ISOLATING CIRCULATING TUMOR CELLS FROM THE PERIPHERAL BLOOD IN VIVO 

    Author: Mego , Michal; Kocifaj , Miroslav; Kundracik , František
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
    Circulating tumor cells (CTC) play a crucial role in disseminating tumors and in the metastatic cascade. CTCs are found only in small numbers, and the limited amount of isolated CTCs makes it impossible to characterize ...
  • STUDY OF L–H TRANSITION AND PEDESTAL WIDTH BASED ON TWOFIELD BIFURCATION AND FIXED POINT CONCEPTS 

    Author: Chatthong , Boonyarit; Onjun , Thawatchai
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
    The L–H transition in magnetic confinement plasmas is investigated on the basis of concepts of two-field bifurcation and fixed-point stability. A set of heat and particle transport equations with both neoclassical and ...
  • DECENTRALIZED MULTIROBOT PLANNING TO EXPLORE AND PERCEIVE 

    Author: Matignon , Laetitia; Jeanpierre , Laurent; Mouaddib , Abdel-Illah
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
    In a recent French robotic contest, the objective was to develop a multi-robot system able to autonomously map and explore an unknown area while also detecting and localizing objects. As a participant in this challenge, ...
  • ABOUT THE UNIFORMITY AND THE STABILITY OF A VOLUME DISCHARGE IN HELIUM IN NEARATMOSPHERIC PRESSURE 

    Author: Kurbanismailov Suliymanovich, Vali; Omarov Alievich, Omar; Ragimkhanov Balaglanovich, Gadjimirza; Aliverdiev Alexandrovich, Abutrab
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
    We present experimental electric and time-spatial characteristics of a volume discharge and of the transition from a volume burning stage into a channel mode nearing atmospheric pressure. We show that the discharge uniformity ...
  • SIMULATION ANALYSIS OF PREHEATER CHARGE TO THE ROTARY FURNACE 

    Author: Mikula , Jan; Palička , Pavol; Kerekanic , Jan
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
    Mathematical modeling of heat aggregates is one of the fundamental methods of the mathematical modelling research. A mathematical model based on the method of elementary balances was created for the thermal treatment of ...
  • CFD ANALYSIS OF THE SPACER GRIDS AND MIXING VANES EFFECT ON THE FLOW IN THE CHOSEN PART OF THE TVSAT FUEL ASSEMBLY 

    Author: 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 ...
  • ANALYSIS OF MECHANICAL PROPERTIES OF HYDROTHERMALLY CURED HIGH STRENGTH CEMENT MATRIX FOR TEXTILE REINFORCED CONCRETE 

    Author: Holčapek , Ondřej; Vogel , Filip; Konvalinka , Petr
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
    The main objective of this article is to describe the influence of hydrothermal curing conditions in an autoclave device (different pressure and temperature), which took place at various ages of a fresh mixture (cement ...
  • TREATMENT OF NATURAL GAS BY ADSORPTION OF CO2 

    Author: Hádková , Kristýna; Tekáč , Viktor; Ciahotný , Karel; Beňo , Zdeněk; Vrbová , Veronika
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
    Apart from burning, one of the possible uses of natural gas is as a fuel for motor vehicles. There are two types of fuel from natural gas — CNG (Compressed Natural Gas) or LNG (Liquefied Natural Gas). Liquefaction of natural ...
  • UNSTEADY FLOW OF THIXOTROPIC COLLAGEN SUBSTANCE IN PIPES 

    Author: 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 ...
  • A COMPACTING PROCESS OF THE EN AW 6060 ALLOY 

    Author: Dragošek , Lukáš; Kociško , Róbert; Kováčová , Andrea; Bidulsky , Robert; Škrobian , Milan
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
    This study reports on an investigation of factors affect the process of compacting Al chips which are used to direct scrap processing through the forward extrusion method. EN AW 6060 chips of different geometry and types ...
  • EFFECTS OF INITIAL MOISTURE CONTENT ON THE PRODUCTION AND QUALITY PROPERTIES OF SOLID BIOFUEL 

    Author: 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 

    Author: 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 ...
  • PYROLYSIS OF BROWN COAL USING A CATALYST BASED ON W–Ni 

    Author: 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, ...
  • ON THE SPEED OF SOUND IN STEAM 

    Author: Šafarík , Pavel; Nový , Adam; Jícha , David; Hajšman , Miroslav
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
    A study of the speed of sound in a pure water substance is presented here. The IAPWS data on the state of water and steam are applied only for investigating the speed of sound for a one-phase medium. A special numerical ...
  • MECHANICAL DISINTEGRATION OF WHEAT STRAW BY ROLLERPLATE GRIND SYSTEM WITH SHARPEDGED SEGMENTS 

    Author: Kratky , Lukas; Jirout , Tomáš
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
    Colloid mills and extruders are widely used for disintegrating wet fibrous biomass. However, their main disadvantages are a high energy requirement in the range of hundreds or thousands of kWh per ton of material, and the ...

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