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    • JATROPHA OIL WITH IRON NANOPARTICLES APPLICATION IN DRILLING PROCESSES 

      Autor: Shalimba , Veikko; Sopko , Vít
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      A performance of heat transfer fluids has a substantial influence on the size, weight and cost of heat transfer systems, therefore, a high-performance heat transfer fluid is very important in many industries. Over the last ...

    • JET ENGINE INLET DISTORTION SCREEN AND DESCRIPTOR EVALUATION 

      Autor: Pečinka , Jiří; Bugajski Thomas, Gabriel; Kmoch , Petr; Jílek , Adolf
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
      Total pressure distortion is one of the three basic flow distortions (total pressure, total temperature and swirl distortion) that might appear at the inlet of a gas turbine engine (GTE) during operation. Different numerical ...

    • JOINIG OF MG ALLOY AZ31B BY SELECTED TECHNOLOGIES 

      Autor: Kramár , Tomáš; Vondrouš , Petr; Jáňa , Miroslav; Kupec , Tomáš
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)
      This contribution presents metallurgical joining of Mg alloy AZ 31B by several technologies - Friction Stir Welding - FSW, Laser Beam Welding - LBW, soldering and their mutual comparison. The difficulty of joining Mg alloys ...

    • Kalker’s coefficient c11 and its influence on the damping and the retuning of a mechanical drive torsion system of a railway vehicle 

      Autor: Dybala, Vojtěch
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      Within the research of electromagnetically excited torsion oscillations in the mechanical part of traction drive systems of modern railway vehicles, which has been realized at the Faculty of mechanical engineering at the ...

    • KINEMATIC SYNTHESIS OF CENTRAL-LEVER STEERING MECHANISM FOR FOUR WHEEL VEHICLES 

      Autor: Pramanik , Santiranjan; Thipse , Sukrut Shrikant
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
      A central lever steering mechanism has been synthesized to obtain five precision points for a four-wheel vehicle using Hooke and Jeeves optimization method. This compound mechanism has been studied as two identical crossed ...

    • Lab-scale Technology for Biogas Production from Lignocellulose Wastes 

      Autor: Krátký , Lukáš; Jirout , Tomáš; Nalezenec , Jiří
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      Currently-operating biogas plants are based on the treatment of lignocellulose biomass, which is included in materials such as agriculture and forestry wastes, municipal solid wastes, waste paper, wood and herbaceous energy ...

    • LABORATORY EQUIPMENT FOR AUTOTHERMAL REFORMING OF ORGANIC MATTER IN SUPERCRITICAL WATER 

      Autor: Gajdoš , Matúš
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      The ability of water to dissolve organic substances is very limited. However, its ability to dissolve them changes if pressure and temperature values reach the so-called critical point (p = 22.06MPa, T = 373.95 °C). Fluid ...

    • LABORATORY TESTING OF THE LEICA AT401 LASER TRACKER 

      Autor: Dvořáček , Filip
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2016)
      This paper describes laboratory tests on a Leica AT401laser tracker. As the newer Leica AT402 model also uses the same firmware package, most of the results should also be valid for this device. First, we present the ...

    • LAMBERT FUNCTION METHODs TO STUDY LASER DYNAMICS WITH TIME-DELAYED FEEDBACK 

      Autor: Joglekar N, Yogesh; Vemuri , Gautam; Wilkey , Andrew
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
      Time-delayed differential equations arise frequently in the study of nonlinear dynamics of lasers with optical feedback and because the analytical solution of such equations can be intractable, one resorts to numerical ...

    • Land use change impact on urban land surface temperatures: A GIS-supported satellite-based case study 

      Autor: Walder, Caroline; Firat Örs, Pelin; Mahdavi, Ardeshir
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      This paper illustrates the use of GIS techniques and satellite data in order to analyze the impact of land use change on the local urban microclimate. Specifically, a case study is presented that concerns the city of Vienna. ...

    • LANDSLIDE MONITORING IN A BUILT-UP AREA 

      Autor: Černoch, Petr; Koštál, Jiří; Podojil, Adam
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)
      The article deals with the evaluation and comparison of measured data from geotechnical monitoring of a gabion wall and an adjacent slope. In 2015, new anomalous phenomena related to deformations and a shift in the area ...

    • LANDSLIDE RECLAMATION IN ŠÁRKA VALLEY 

      Autor: Vaníček, Martin
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)
      Housing development in Šárka’s valley is situated in former brickworks – borrow pit for brick-clay. On its north side the borrow pit cutting is up to 8m high with main road on top. This slope was suffering from progressive ...

    • LAPLACE EQUATIONS, CONFORMAL SUPERINTEGRABILITY AND BÔCHER CONTRACTIONS 

      Autor: Kalnins G., Ernest; Miller, Jr , Willard; Subag , Eyal
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2016)
      Quantum superintegrable systems are solvable eigenvalue problems. Their solvability is due to symmetry, but the symmetry is often ``hidden''.The symmetry generators of 2nd order superintegrable systems in 2 dimensions close ...

    • LAPLACE-RUNGE-LENZ VECTOR IN QUANTUM MECHANICS IN NONCOMMUTATIVE SPACE 

      Autor: Prešnajder , Peter; Gáliková , Veronika; Kováčik , Samuel
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)
      The object under scrutiny is the dynamical symmetry connected with conservation of the Laplace-Runge-Lenz vector (LRL) in the hydrogen atom problem solved by means of noncommutative quantum mechanics (NCQM). The considered ...

    • LARGE AREA HODOSCOPES FOR MUON DIAGNOSTICS OF HELIOSPHERE AND EARTH’S MAGNETOSPHERE 

      Autor: Yashin, I. I.; Ampilogov, N. V.; Astapov, I.I.; Barbashina, N.S.; Borog, V.V.; Dmitrieva, A.N.; Kokoulin, R.P.; Kompaniets, K.G.; Mannocchi, G.; Mikhailenko, A.S.; Petrukhin, A.A.; Saavedra, O.; Shutenko, V.V.; Trinchero, G.; Yakovleva, E.I.
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)
      Muon diagnostics is a technique for remote monitoring of active processes in the heliosphere and the magnetosphere of the Earth based on the analysis of angular variations of muon flux simultaneously detected from all ...

    • Laser Cutting of Materials of Various Thicknesses 

      Autor: Grepl , Martin; Pagáč , Marek; Petrů , Jana
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      Thise paper deals with the application of laser technology and optimizing the parameters for cutting nickel alloy. The theoretical part of the paper describes various types of lasers, their principles and usage. The ...

    • LASER ULTRASONIC MEASUREMENT OF MECHANICAL DECAY IN LIMESTONE CAUSED BY FREEZE-THAW CYCLES 

      Autor: Kravcov , Alexander; Franek , Ondřej; Morozov , Nikolaj; Kucewicz , Michał; Tomaszewski , Michał; Svoboda , Pavel; Baranowski , Paweł
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
      In this article, an innovative new method of non-destructive testing for estimating the sensitivity of limestone is presented. An advantage of the laser ultrasonic structuroscopy method is the time and the quality, due to ...

    • LASER-INDUCED SURFACE ACOUSTIC WAVES FOR THIN FILM CHARACTERIZATION 

      Autor: Kudělka, Radim; Václavek, Lukáš; Tomáštík, Jan; Malecová, Sabina; Čtvrtlík, Radim
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)
      Knowledge of mechanical properties of thin films is essential for most of their applications. However, their determination can be problematic for very thin films. LAW (Laser-induced acoustic waves) is a combined acousto-optic ...

    • LATERAL COOLANT FLOW BETWEEN FUEL ASSEMBLIES IN MIXED CORES 

      Autor: Caha, Vojtech; Čížek, Jiří
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2018)
      This paper presents the results of an analysis of lateral coolant flow between adjacent fuel assemblies with non-identical spacing grids in a mixed core consisting of TVSA-T mod.1 and TVSA-T mod.2 fuel assemblies. The ...

    • Lateral load bearing characteristics of light gauge steel and lightweight concrete shear walls 

      Autor: Quan, Chunri; Huang, Qiang; Li, Dongbin; Chen, Yong
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)
      In China, there is a new structural system named light gauge steel and lightweight concrete (LSLC) structure, which used lightweight concrete as structural material in composite way with cold-formed steel. Here, the shear ...