Prohlížení Ústřední knihovna ČVUT dle názvu

Zobrazují se záznamy 1994-2013 z 2019

    • WEAR BEHAVIOUR OF VANES FOR A ROTARY VANE EXPANDER WITH VARIOUS GRAPHITE MATERIALS UNDER DRY SLIDING CONDITIONS 

      Autor: Vodička , Václav; Novotný , Václav; Mascuch , Jakub
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2018)
      This study presents tribological properties of various graphite materials of vanes for rotary vane expanders. A test device was developed in order to measure the wear and power dissipation under conditions similar to a ...

    • WELDING OF NITINOL BY SELECTED TECHNOLOGIES 

      Autor: Kramár , Tomáš; Tauer , Jan; Vondrouš , Petr
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      Nitinol is a perspective alloy that is difficult to weld because of its high sensitivity to heat, atmospheric gases and the NiTi phase instability. We evaluated several welding techniques with regard to their applicability ...

    • WHAT IS NEW IN ASTROPARTICLE PHYSICS 

      Autor: Giovannelli, Franco
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      In this brief review paper I will point to the most important steps that have been made in recent decades toward a better understanding of the physics governing our Universe. Because of the limited length of this paper, I ...

    • What Powers the 2006 Outburst of the Symbiotic Star BF Cygni? 

      Autor: Skopal, A.; Sekeráš, M.; Tomov, N. A.; Tomova, M. T.; Tarasova, T. N.; Wolf, M.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      BF Cygni is a classical symbiotic binary. Its optical light curve occasionally shows outbursts of the Z And-type, whose nature is not well understood. During the 2006 August, BF Cyg underwent the recent outburst, and ...

    • When a Nova Becomes Old 

      Autor: Ederoclite, A.; Tappert, C.; Schmidtobreick, L.; Vogt, N.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      Here we present the preliminary results of a project aimed at unveiling the nature of classical novae decades after their eruption. The ultimate goal of this project is to describe the population of cataclysmic variables ...

    • WHICH FANS ARE THE BIGGEST ACCELERATION OF THE GRANDSTAND? 

      Autor: Verner, Martin
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2018)
      The fans of AC Sparta Prague and SK Slavie Prague have been arguing about the fact whose fans support their team better since the end of 20th century. There have been made many experiments on the intensity of vibrations ...

    • White Dwarfs in Cataclysmic Variables: An Update 

      Autor: Sion, E. M.; Godon, P.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      In this review, we summarize what is currently known about the surface temperatures of accreting white dwarfs in nonmagnetic and magnetic cataclysmic variables (CVs) based upon synthetic spectral analyses of far ultraviolet ...

    • Who Discovered the Hoyle Level? 

      Autor: Shaviv, G.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      The prediction of Hoyle that the nucleus of 12C must have a resonance at 7.62MeV was the trigger to the Anthropic Principle. We review the history of the discovery of this level and investigate to what extent this was a ...

    • Why a New Code for Novae Evolution and Mass Transfer in Binaries? 

      Autor: Shaviv, G.; Idan, I.; Shaviv, N. J.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      One of the most interesting problems in Cataclysmic Variables is the long time scale evolution. This problem appears in long time evolution, which is also very important in the search for the progenitor of SN Ia. The ...

    • WHY MONITOR ACOUSTIC EMISSIONS DURING NANOMECHANICAL TESTS? 

      Autor: Čtvrtlík, Radim; Václavek, Lukáš; Tomáštík, Jan
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
      Acoustic Emissions (AE) monitoring has been proved as an effective non-destructive technique at the macro scale. Nevertheless, it may also be employed at nano/micro scale during nanomechanical and nanotribological testing. ...

    • Workshop on The Golden Age of Cataclysmic Variables and Related Objects - II . 

      Autor: Foreword, Editorial,
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      Organizing Institutions:INAF – Istituto di Astrofisica e Planetologia Spaziali, Roma – INAF-IAPS, Roma, ItalyINTA – Dpt. de Cargas Utiles y Ciencias del Espacio, INTA-DCUCE, Madrid, SpainCzech Republic Academy of Sciences ...

    • X-COPTER STUDIO 

      Autor: Koutný, Michal; Pilát, Ondrej; Černý, Patrik; Kasinec, Maroš; Barták, Roman
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      We present a project that aggregates various existing robotic software and serves as a platform to conveniently control a quadrocopter, mainly for research or educational purposes. User interface runs in a browser and other ...

    • X-Ray and Near-Infrared Spectroscopy of Dim X-Ray Point Sources Constituting the Galactic Ridge X-Ray Emission 

      Autor: Morihana, Kumiko; Tsujimoto, Masahiro; Ebisawa, Ken
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      We present the results of X-ray and Near-Infrared observations of the Galactic Ridge X-ray Emission (GRXE). We extracted 2,002 X-ray point sources in the Chandra Bulge Field (l =0°.113, b = 1°.424) down to ~10-14.8 ergscm-2s-1 ...

    • X-RAY MICRO-TOMOGRAPHY CHARACTERIZATION OF VOIDS CAUSED BY THREE-POINT BENDING IN SELECTED ALKALI-ACTIVATED ALUMINOSILICATE COMPOSITE 

      Autor: Kumpová, Ivana; Rozsypalová, Iva; Keršner, Zbyněk; Rovnaníková, Pavla; Vopálenský, Michal
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      This paper deals with the pilot characterization of a special alkali-activated aluminosilicate composite composed of waste brick powder, brick rubble and a solution of potassium water glass. Fracture tests were conducted ...

    • X-Ray Observations of VY Scl-Type Nova-Like Binaries in the High and Low State 

      Autor: Zemko, P.; Orio, M.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      Four VY Scl-type nova-like systems were observed in X-rays both during the low and the high optical states. They are BZ Cam, MV Lyr, TT Ari, and V794 Aql. Using archival ROSAT, Swift and SUZAKU observations we found that ...

    • X-ray Spectroscopic Characterization of Shock-Ignition-Relevant plasmas 

      Autor: Šmíd , Michal; Antonelli , Luca; Renner , Oldoich
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      Experiments with multilayer plastic/Cu targets performed at a PALS laser system aimed at the study of matter at conditions relevant to a shock ignition ICF scheme, and, in particular, at the investigation of hot electrons ...

    • X-RAY TRANSMISSION AND REFLECTION THROUGH A COMPTON-THICK MEDIUM VIA MONTE-CARLO SIMULATIONS 

      Autor: Eikmann , Wiebke; Wilms , Jörn; Smith K., Randall; Lee C., Julia
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      The spectral shape of an X-ray source strongly depends on the amount and distribution of the surrounding material. The spectrum of a primary source which is located in an optically thin medium with respect to Compton ...

    • X-RAY VARIABILITY STUDY OF POLAR SCATTERED SEYFERT1 GALAXIES 

      Autor: Beuchert, Tobias; Wilms, Jörn; Kadler, Matthias; Longinotti, Anna Lia; Guainazzi, Matteo; Miniutti, Giovanni; de la Calle, Ignacio
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      We study 12 Seyfert 1 galaxies with a high level of optical polarization. Optical light emerging from the innermost regions is predominantly scattered in a polar region above the central engine directly in our line of ...

    • XLIV. Dny radiační ochrany - sborník abstraktů 

      Autor: Štěpán V. (ed.)
      (Faculty of Nuclear Sciences and Physical Engineering, 2023)
      Sborník abstraktů konference XLIV. Dny radiační ochrany představuje souhrn abstraktů plakátových a ústních sdělení z tematických okruhů Všeobecné aspekty radiační ochrany a vzdělávání, Biologické účinky a zdravotní hlediska, ...

    • XMM-NEWTON SCIENTIFIC HIGHLIGHTS: X-RAY SPECTROSCOPIC POPULATION STUDIES OF AGN 

      Autor: Guainazzi, Matteo
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      In this paper I review the contribution that the XMM-Newton ESA X-ray mission has given to our understanding of Active Galactic Nuclei, together with other operational, and complementary, X-ray facilities. I will focus on ...