Prohlížení Acta Polytechnica dle názvu

Zobrazují se záznamy 254-273 z 880

    • Editorial: FAREWELL AND WELCOME NEW EDITOR-IN-CHIEF 

      Autor: Adlerová , Iva
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2018)
      My seven years with Acta Polytechnica ended on June 30. The opportunity to lead this journal from a local list of reviewed periodicals to the prestigious databases – Web of Science, Scopus, Inspec, CAS and more – was a ...

    • Effect of cross-sections data on calculated static neutronic parameters of PWR MOX/UO2 core transient benchmark case using NODAL3 code 

      Autor: Luthfi, Wahid; Pinem, Surian
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2023)
      This paper describes the effect of cross-section data generated by several codes on calculated neutronic parameters. The Pressurized Water Reactor Mixed Oxide and Uranium Oxide (PWR MOX/UO2) Core Transient Benchmark case ...

    • EFFECT OF FIBRE ASPECT RATIO AND FIBRE VOLUME FRACTION ON THE EFFECTIVE FRACTURE ENERGY OF ULTRA-HIGH-PERFORMANCE FIBRE-REINFORCED CONCRETE 

      Autor: Sovják, Radoslav; Máca, Petr; Imlauf, Tomáš
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2016)
      This paper investigates the effective fracture energy of UHPFRC with various fibre volume fractions and various fibre aspect ratios. We have concluded that the effective fracture energy is dependent on both the fibre volume ...

    • Effect of Gas Mixture Composition on the Parameters of an Internal Combustion Engine 

      Autor: Chríbik , Andrej; Polóni , Marián; Lach , Ján
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      This paper deals with the use of the internal combustion piston engine, which is a drive unit for micro-cogeneration units. The introduction is a brief statement of the nature of gas mixture compositions that are useful ...

    • EFFECT OF IMPERATA CYLINDRICA REINFORCEMENT FORM ON THE TENSILE AND IMPACT PROPERTIES OF ITS COMPOSITES WITH RECYCLED LOW DENSITY POLYETHYLENE 

      Autor: Olusunmade Femi, Olusola; Bulus Emmanuel, Abba; Kashin Kelvin, Terwase
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2018)
      Composites of recycled low-density polyethylene obtained from waste water-sachets and imperata cylindrica were produced with particulate and long-fibre unidirectional mat reinforcements. Comparison was made of the tensile ...

    • Effect of membrane separation process conditions on the recovery of syngas components 

      Autor: Seghman, Petr; Krátký, Lukáš; Jirout, Tomáš
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      The presented study focuses on inspecting the dependency between process conditions, especially permeate and retentate pressure and component recovery of H2, CO, and CO2 during a membrane separation of model syngas. ...

    • Effect of pigments on bond strength between coloured concrete and steel reinforcement 

      Autor: Assaad, Joseph J.; Mata, Matthew; Saade, Jad
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      The effect of pigments on mechanical properties of coloured concrete intended for structural applications, including the bond stress-slip behaviour to embedded steel bars, is not well understood. Series of concrete mixtures ...

    • 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 ...

    • EFFECT OF SLIP VELOCITY ON THE PERFORMANCE OF A SHORT BEARING LUBRICATED WITH A MAGNETIC FLUID 

      Autor: Patel U., Rachana; Deheri M., G.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      This paper aims at analyzing the effect of velocity slip on the behavior of a magnetic fluid based infinitely short hydrodynamic slider bearing. Solving the Reynolds’ equation, the expression for pressure distribution is ...

    • EFFECT OF THE ADDITION OF LI ON THE STRUCTURE AND MECHANICAL PROPERTIES OF HYPOEUTECTIC Al-Mg2Si ALLOYS 

      Autor: 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 ...

    • EFFECT OF THE APPLICATION OF MICROWAVE ENERGY ON THE REGENERATION OF THE ADSORBENT 

      Autor: Dobrotvorskiy , Sergey; Aleksenko , Borys; Dobrovolska , Ludmila; Basova , Yevheniia
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2018)
      Today, energy conservation is a priority. This is due to the shortage of energy resources, the growth of their cost and global environmental problems. The production of compressed air is a wery costly and power-consuming ...

    • EFFECT OF THE FLOW FIELD DEFORMATION IN THE WIND TUNNEL ON THE AERODYNAMIC COEFFICIENTS 

      Autor: Maturkanič , Dušan
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      The flow field quality has a principal signification at wind tunnel measurement. The creation of the flow field of air by fan leads to the rotation of entire flow field which is, moreover, deformed at the bends of the wind ...

    • 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 ...

    • EFFECTIVE FRACTURE ENERGY OF ULTRA-HIGH-PERFORMANCE FIBRE-REINFORCED CONCRETE UNDER INCREASED STRAIN RATES 

      Autor: Sovják , Radoslav; Rašínová , Jana; Máca , Petr
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      The main objective of this paper is to contribute to the development of ultra-high performance fibre reinforced concrete (UHPFRC) with respect to its effective fracture energy. Effective fracture energy was investigated ...

    • EFFECTIVE USE OF ROTARY FURNACE SHELL HEAT 

      Autor: Lisuch , Julius; Dorcak , Dusan; Spisak , Jan
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      Significant proportion of the total energy expenditure for the heat treatment of raw materials are heat losses through the shell of rotary furnace. Currently, the waste heat is not used in any way and escapes into the ...

    • EFFECTS OF DESIGN PARAMETERS ON STATIC EQUIVALENT STRESS OF RADIAL ROLLING BEARINGS 

      Autor: Bozca, Mehmet
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
      The aim of this study is to theoretically investigate the effects of design parameters on the static equivalent stress of radial rolling bearings, such as the point contact case for ball bearings and line contact case for ...

    • 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 ...

    • EFFECTS ON THE FINAL INTENSITY OF INPUT FORCES IN LONGBOLTS INSTALLED AT THE MINING OPERATION 2 AREA, OKD, INC. 

      Autor: Dvořák , Pavel; Jiránková , Eva
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2018)
      In the deep coal mines of OKD, Inc., both bolts and long bolts of different designs are used for the rock massif and steel arch support reinforcement. Continuous measurement of forces in 6 strand bolts and 1 cable bolt ...

    • EIGENVALUE COLLISION FOR PT-SYMMETRIC WAVEGUIDE 

      Autor: Borisov , Denis
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      We consider a model of a planar PT-symmetric waveguide and study the phenomenon of the eigenvalue collision under perturbation of the boundary conditions. This phenomenon was discovered numerically in previous works. The ...

    • EIGENVALUES EVALUATION OF GENERALLY DAMPED ELASTIC DISC BRAKE MODEL LOADED WITH NON-CONSERVATIVE FRICTION FORCE 

      Autor: Úradníček , Juraj; Musil , Miloš; Bachratý , Michal
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
      This paper deals with the evaluation of eigenvalues of a linear damped elastic two-degrees-of-freedom system under a non- onservative loading. As a physical interpretation of a proposed mathematical model, a simplified ...