Poslední příspěvky

  • Subjective approach to optimal cross-sectional design of biodegradable magnesium alloy stent undergoing heterogeneous corrosion 

    Autor: Zarei, Najmeh; Anvar, Seyed Ahmad; Goenezen, Sevan
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
    Existing biodegradable Magnesium Alloy Stents (MAS) have several drawbacks, such as high restenosis, hasty degradation, and bulky cross-section, that limit their widespread application in a current clinical practice. To ...
  • Preliminary prospects of a Carnot-battery based on a supercritical CO2 Brayton cycle 

    Autor: Rindt, Karin; Hrdlička, František; Novotný, Václav
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
    As a part of the change towards a higher usage of renewable energy sources, which naturally deliver the energy intermittently, the need for energy storage systems is increasing. For the compensation of the disturbance in ...
  • Process optimization and performance evaluation of a downdraft gasifier for energy generation from wood biomass 

    Autor: Daniyan, Ilesanmi; Ale, Felix; Uchegbu, Ikenna Damian; Bello, Kazeem; Osazele, Momoh
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
    In recent time, due to the increasing demand for energy and the need to address environment-related issues, a great deal of focus has been given to alternative sources of energy, which are green, sustainable and safe. This ...
  • Assessment of external interface of autonomous vehicles 

    Autor: Orlický, Adam; Mashko, Alina; Mík, Josef
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
    The paper deals with the problem of a communication interface between autonomous vehicles (AV) and pedestrians. The introduced methodology for assessing new and existing e-HMI (external HMI) contributes to traffic safety ...
  • On reducing CO2 concentration in buildings by using plants 

    Autor: Franek, Ondřej; Jarský, Čeněk
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
    The article deals with the implementation of plants in the indoor environment of buildings to reduce the concentration of CO2. Based on a specified model representing the internal environment of an office space, it was ...
  • Water-air ejector with conical-cylindrical mixing chamber 

    Autor: Sliusenko, Andrii; Ponomarenko, Vitalii; Forostiuk, Inna
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
    In the paper, the hydrodynamics of the liquid-gas mixture in the mixing chamber of the ejectors at different spatial positions was analyzed and the comparative study of such ejectors was carried out. It was found that a ...
  • Determination of bond model for 7-wire strands in pretensioned concrete beam 

    Autor: Parkhats, Vadzim; Krzywoń, Rafał; Hulimka, Jacek; Kubica, Jan
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
    A correct choice of a bond model for prestressing tendons is crucial for the right modelling of a structural behaviour of a pretensioned concrete structure. The aim of this paper is the determination of an optimal bond ...
  • Application of additional insulation to ETICS on surfaces with biocorrosion 

    Autor: Antošová, Naďa; Šťastný, Patrik; Petro, Marek; Krištofič, Štefan
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
    The paper presents partial outputs from an experiment that demonstrated the impact of applying an additional insulation on an existing contact insulation system with a green-algae surface. The aim was mainly to detect the ...
  • Comparision of the walk techniques for fitness state space analysis in vehicle routing problem 

    Autor: Agárdi, Anita; Kovács, László; Bányai, Tamás
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
    The Vehicle Routing Problem (VRP) is a highly researched discrete optimization task. The first article dealing with this problem was published by Dantzig and Ramster in 1959 under the name Truck Dispatching Problem. Since ...
  • Design development and study of an elastic sectional screw operating tool 

    Autor: Hevko, Roman; Zalutskyi, Sergii; Tkachenko, Ihor; Lyashuk, Oleg; Trokhaniak, Oleksandra
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
    The results of an elastic sectional screw operating tool development and its production technique are presented in the article under consideration. The operating tool has been made to fix the elastic sections, providing ...
  • Cavitation wear of Eurofer 97, Cr18Ni10Ti and 42HNM alloys 

    Autor: Rostova, Hanna; Voyevodin, Victor; Vasilenko, Ruslan; Kolodiy, Igor; Kovalenko, Vladimir; Marinin, Vladimir; Zuyok, Valeriy; Kuprin, Alexander
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
    The microstructure, hardness and cavitation wear of Eurofer 97, Cr18Ni10Ti and 42HNM have been investigated. It was revealed that the cavitation resistance of the 42HNM alloy is by an order of magnitude higher than that ...
  • Delamination of polyimide in hydrofluoric acid 

    Autor: Al-mashaal, Asaad K. Edaan; Cheung, Rebecca
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
    Wet etching is a critical fabrication step for the mass production of micro and nanoelectronic devices. However, when an extremely corrosive acid such as hydrofluoric (HF) acid are used during etching, an undesirable damage ...
  • Performance characteristics of low carbon waste material to stabilise soil with extremely high plasticity 

    Autor: Al-Baidhani, Ali; Al-Taie, Abbas Jawad
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
    The application of low-carbon and natural materials to mitigate the undesired properties of difficult soils is considered as a sustainable solution to the issues regarding these soils. Selecting some natural materials, of ...
  • Peculiar aspects of cracking in prestressed reinforced concrete T-beams 

    Autor: Karpiuk, Vasyl; Somina, Yuliia; Karpiuk, Fedir; Karpiuk, Irina
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
    In order to study the cracking of prestressed reinforced concrete T-shaped beam structures, the authors planned and carried out a full-scale experiment with five variable factors. The following factors were chosen as ...
  • Dirac oscillator in dynamical noncommutative space 

    Autor: Haouam, Ilyas
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
    In this paper, we address the energy eigenvalues of two-dimensional Dirac oscillator perturbed by a dynamical noncommutative space. We derived the relativistic Hamiltonian of Dirac oscillator in the dynamical noncommutative ...
  • Hydrothermally-calcined waste paper ash nanomaterial as an alternative to cement for clay soil modification for building purposes 

    Autor: Robert, Ubong Williams; Etuk, Sunday Edet; Agbasi, Okechukwu Ebuka; Umoren, Grace Peter; Akpan, Samuel Sunday; Nnanna, Lebe Agwu
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
    It has been observed that clay soil cannot be used for building design, unless it is modified by firing or with cement. Either method of stabilization can adversely affect the environment and public health just like ...
  • Bearing capacity of damaged reinforced concrete beams strengthened with metal casing 

    Autor: Karpiuk, Irina; Danilenko , Denis; Karpiuk, Vasyl; Danilenko , Anna; Lyashenko, Tatiana
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
    Experimental data on the bearing capacity of damaged reinforced concrete beams with the dimensions of 2000×200×100 mm, reinforced with prestressed metal casings, are presented. Damaging in the form of through normal and ...
  • Geotechnical and microstructural properties of cement-treated laterites stabilized with rice husk ash and bamboo leaf ash 

    Autor: Nnochiri, Emeka Segun; Ogundipe, Olumide Moses; Ola, Samuel Akinlabi
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
    This study investigated the geotechnical and microstructural properties of cement-treated laterites stabilized with rice husk ash and bamboo leaf ash. In going about the tests, the soil sample was subjected to compaction, ...
  • APPLICATION OF ADVANCED COMBUSTION MODELS IN INTERNAL COMBUSTION ENGINES BASED ON 3-D CFD LES APPROACH 

    Autor: Vítek, Oldřich; Macek, Jan; Doleček, Vít; Syrovátka, Zbyněk; Pavlovic, Zoran; Priesching, Peter; Tap, Ferry
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
    This paper deals with the application of advanced simulation techniques for combustion modeling in the case of an internal combustion engine. The main focus is put on models with a high predictive ability hence 3-D CFD was ...
  • ON THE USE OF A FLUX-SPLITTING SCHEME IN THE NUMERICAL FLUTTER ANALYSIS OF A LOW-PRESSURE TURBINE STAGE 

    Autor: Pátý, Marek; Halama, Jan
    (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
    The endeavour to increase the power output of steam turbines results in the design of low-pressure stages with large diameters. Such designs, featuring long and thin blades, are increasingly susceptible to unfavourable ...

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