Prohlížení Acta Polytechnica dle názvu

Zobrazují se záznamy 614-633 z 880

    • Performance of a hydromagnetic squeeze film on a rough circular step bearing: a comparision of different porous structures 

      Autor: Adeshara, Jatinkumar V.; Patel, Hardik P.; Deheri, Gunamani B.; Patel, Rakesh M.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      This investigation deals with a comparative analysis of the impact of spongy structure based on the model of Kozeny-Carman and Irmay on a hydromagnetic squeeze film in a rough circular step bearing. Christensen and Tonder’s ...

    • PERFORMANCE OF SUSTAINABLE GREEN CONCRETE INCORPORATED WITH FLY ASH, RICE HUSK ASH, AND STONE DUST 

      Autor: Siddika, Ayesha; Amin, Md. Ruhul; Rayhan, Md. Abu; Islam, Md. Saidul; Mamun, Md. Abdullah Al; Alyousef, Rayed; Amran, Y. H. Mugahed
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
      The performance of a sustainable green concrete with fly ash (FA), rice husk ash (RHA), and stone dust (SD) as a partial replacement of cement and sand was experimentally explored. FA and RHA have a high silica content, ...

    • Photometric Analysis of Pi of the Sky Data 

      Autor: Opiela , Rafał; Małek , Katarzyna; Mankiewicz , Lech; Siudek , Małgorzata; Sokołowski , Marcin; Żarnecki , Aleksander Filip
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      Two fully automatic Pi of the Sky detectors with a large field of view, located in Spain (INTA) and in Chile (SPDA) observe the sky in search of rare optical phenomena, and also collect observations which include many kinds ...

    • PHOTOMETRIC ANALYSIS OF PI OF THE SKY DATA 

      Autor: Opiela , Rafał; Małek , Katarzyna; Mankiewicz , Lech; Siudek , Małgorzata; Sokołowski , Marcin; Zarnecki Filip, Aleksander
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      Pi of the Sky is a system of two wide field of view robotic telescopes, which search for short timescale astrophysical phenomena, especially for prompt optical GRB emissions. The system was designed for autonomous operation, ...

    • Photonic graphene under strain with position-dependent gain and loss 

      Autor: Castillo-Celeita, Miguel; Contreras-Astorga, Alonso; Fernández C., David J.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      We work with photonic graphene lattices under strain with gain and loss, modeled by the Dirac equation with an imaginary mass term. To construct such Hamiltonians and their solutions, we use the free-particle Dirac equation ...

    • Physical and Chemical Aspects of the Nucleation of Cement-Based Materials 

      Autor: Demo , Pavel; Sveshnikov , Alexey; Hošková , Šárka; Ladman , David; Tichá , Petra
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      A theoretical model of the nucleation of portlandite is proposed, and the critical size of a portlandite cluster and the energy barrier of nucleation are determined. The steady state nucleation rate and the time lag of the ...

    • Physical and Electrical Properties of Yttria-Stabilized Zirconia Thin Films Prepared by Radio Frequency Magnetron Sputtering 

      Autor: Golosov, Dmitriy A.; Zavatskiy, Sergey M.; Melnikov, Sergey N.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      This paper presents the electrophysical characteristics of a 7 mol.% yttria-stabilized zirconia (YSZ) thin film deposited by radio-frequency magnetron sputtering. In order to form the crystallinestructure, the deposited ...

    • “PI OF THE SKY” OFF-LINE EXPERIMENT WITH GLORIA 

      Autor: Majcher , Ariel; Cwiek , Arkadiusz; Cwiok , Mikołaj; Mankiewicz , Lech; Zaremba , Marcin; Zarnecki F., Aleksander
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      GLORIA is the first free and open-access network of robotic telescopes in the world. Based on the Web 2.0 environment, amateur and professional users can do research in astronomy by observing with robotic telescope, and/or ...

    • PILE SETTLEMENT INDUCED FROM SOIL MOVEMENT DUE TO BREAKDOWN OF RETAINING WALL 

      Autor: Shukla , Rajesh Prasad
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
      Very few studies measured the settlement of retaining wall supported piles foundation under a soil movement. This study explores the pile settlement induced from the sudden breakdown of a closely located retaining wall ...

    • Pin Hole Discharge Creation in Na2SO4 Water Solutions 

      Autor: Hlavatá , Lucie; Serbanescu , Rodica; Hlochová , Lenka; Kozáková , Zdenka; Krčma , František
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      This work deals with the diaphragm discharge generated in water solutions containing Na2SO4 as a supporting electrolyte. The solution conductivity was varied in the range of 270 ÷ 750 µScm-1. The batch plasma reactor with ...

    • Plasma Flow and Temperature in a Gliding Reactor with Different Electrode Configurations 

      Autor: Sláma , J.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      This paper deals with the plasma flow shape depending on the electrode form of a gliding discharge plasma-chemical reactor, and with the temperature distribution along the direction of the plasma flow in one specific ...

    • Plasma Surface Treatment of Powder Materials — Process and Application 

      Autor: Pavlatová , Monika; Horáková , Marta; Hladík , Jan; Špatenka , Petr
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      Polyolefin particles are hydrophobic, and this prevents their use for various applications. Plasma treatment is an environment-friendly polyolefin hydrophilisation method. We developed an industrial-scale plant for plasma ...

    • Plasma–Surface Interactions Under High Heat and Particle Fluxes 

      Autor: Temmerman , Gregory De; Bystrov , Kirill; Liu , Feng; Liu , Wei; Morgan , Thomas; Tanyeli , Irem; Berg , Miranda van den; Xu , Haiyan; Zielinski , Jakub
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      The plasma-surface interactions expected in the divertor of a future fusion reactor are characterized by extreme heat and particle fluxes interacting with the plasma-facing surfaces. Powerful linear plasma generators are ...

    • PLATFORM WITH CAMERA SYSTEM FOR MEASUREMENT OF COMPENSATORY MOVEMENTS OF SMALL ANIMALS 

      Autor: Kutílek , Patrik; Škoda , David; Hýbl , Ján; Černý , Rudolf; Frynta , Daniel; Landová , Eva; Frýdlová , Petra; Kurali , Aniko; Doskočil , Radek; Křivánek , Václav
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
      The article introduces systems and methods of a controllable rotational platform used for measuring compensatory movement of small animals. The system, based on a camera subsystem, is located on a mechanical platform powered ...

    • PNEUMATIC SYSTEMS FOR AUTOMATIC SORTING EQUIPMENT 

      Autor: Onderová , Iveta; Čačko , Viliam; Kolláth , Ľudovít; Šooš , Ľubomír; Smelík , Andrej; Varga , Alexander
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      The aim of the research work was focused on a research of manipulators design using suction grippers. The results of the research can be applied in the design of jigs - manipulators for handling thin sheets. The FME analysis ...

    • POLYMERS CONTAINING Cu NANOPARTICLES IRRADIATED BY LASER TO ENHANCE THE ION ACCELERATION 

      Autor: Cutroneo , Mariapompea; Torrisi , Lorenzo; Mackova , Anna; Velyhan , Andriy
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      Target Normal Sheath Acceleration method was employed at PALS to accelerate ions from laser-generated plasma at intensities above 1015 W/cm2. Laser parameters, irradiation conditions and target geometry and composition ...

    • POPULATION OF BLACK HOLES IN THE MILKY WAY AND IN THE MAGELLANIC CLOUDS 

      Autor: Ziółkowski, Janusz
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      In this review, I will briefly discuss the different types of black hole (BH) populations (supermassive, intermediate mass and stellar mass BHs) both in the Galaxy and in the Magellanic Clouds and compare them with each other.

    • Positioning of the Precursor Gas Inlet in an Atmospheric Dielectric Barrier Reactor, and its Effect on the Quality of Deposited TiOx Thin Film Surface 

      Autor: Píchal , Jan; Klenko , Julia
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      Thin film technology has become pervasive in many applications in recent years, but it remains difficult to select the best deposition technique. A further consideration is that, due to ecological demands, we are forced ...

    • POSSIBILITY OF MONITORING OF PAHs DISTRIBUTION IN THE VERTICAL PROFILE AT THE BACKGROUND METEOROLOGICAL STATION KREŠÍN RETRACTED 

      Autor: Strnadová , Gabriela; Hanuš , Vlastimil; Kahoun , David; Semerák , Petr; Tříska , Jan
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
      ARTICLE HAS BEEN RETRACTED BY EDITORIAL OFFICE, UPON AN APPROVAL OF ALL AUTHORSThe contaminants present in the atmosphere have a substantial impact on public health. Among contaminants, the most important are polycyclic ...

    • Post-impact mechanical characterization of HMPE yarns 

      Autor: Belloni, Eduarda da Silva; Clain, Fernanda Mazuco; Guilherme, Carlos Eduardo Marcos
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
      The present work evaluates the mechanical behaviour of High Modulus Polyethylene (HMPE) yarns after being impacted by sudden axial loads. The influence of loading conditions on the structural integrity of yarns is assessed ...