Now showing items 1-20 of 831

    • Projektování mikropočítačových systémů 

      Author: Janeček J.
      (Czech Technical University in Prague, 1995)
    • Efficient Structure from Motion by Graph Optimization 

      Author: Havlena, Michal; Torii, Akihiko; Pajdla, Tomáš
      (Springer Berlin, 2010)
      We present an efficient structure from motion algorithm that can deal with large image collections in a fraction of time and effort of previous approaches while providing comparable quality of the scene and camera ...
    • A Thermogravimetric Study of the Behaviour of Biomass Blends During Combustion 

      Author: Jiříček , Ivo; Rudasová , Pavla; Žemlová , Tereza
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      The ignition and combustion behavior of biomass and biomass blends under typical heating conditions were investigated. Thermogravimetric analyses were performed on stalk and woody biomass, alone and blended with various ...
    • Lab-scale Technology for Biogas Production from Lignocellulose Wastes 

      Author: 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 ...
    • Resistance Spot Welding of dissimilar Steels 

      Author: Kolařík , Ladislav; Sahul , Miroslav; Kolaříková , Marie; Sahul , Martin; Turňa , Milan; Felix , Michal
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      This paper presents an analysis of the properties of resistance spot welds between low carbon steel and austenitic CrNi stainless steel. The thickness of the welded dissimilar materials was 2 mm. A DeltaSpot welding gun ...
    • Plasma Surface Treatment of Powder Materials — Process and Application 

      Author: 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 ...
    • Heat Exchangers for Condensation and Evaporation Applications Operating in a Low Pressure Atmosphere 

      Author: Kracík , Petr; Pospíšil , Jiří; Šnajdárek , Ladislav
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      This paper presents a state-of-the-art study of a heat transfer process in liquid spraying heat exchangers placed in a vacuum chamber. The experimental case studied here describes the behavior of a falling film evaporation ...
    • Change of Pressing Chamber Conicalness at Briquetting Process in Briquetting Machine Pressing Chamber 

      Author: Križan , Peter; Matúš , Miloš; Kers , Jaan; Vukelić , Djordje
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      In this paper, we will present the impact of the conical shape of a pressing chamber, an important structural parameter. Besides the known impact of the technological parameters of pressing chambers, it is also very important ...
    • Energy Recovery from Contaminated Biomass 

      Author: Moskalík , Jiří; Škvařil , Jan; Štelcl , Otakar; Baláš , Marek; Lisý , Martin
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      This study focuses on thermal gasification methods of contaminated biomass in an atmospheric fluidized bed, especially biomass contaminated by undesirable substances in its primary use. For the experiments, chipboard waste ...
    • Modularity of Pressing Tools for Screw Press Producing Solid Biofuels 

      Author: Matúš , Miloš; Križan , Peter
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      This paper focuses on the development of the newly-patented structure of a screw briquetting machine for compacting biomass into a solid biofuel. The design of the machine is based on the results of a comprehensive study ...
    • Biomass Gasification — Primary Methods for Eliminating Tar 

      Author: Lisý , Martin; Baláš , Marek; Moskalík , Jiří; Štelcl , Otakar
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      This present paper deals with primary methods for reducing tar in biomass gasification, namely by feeding a natural catalyst into a fluidized bed. This method is verified using an experimental pilot plant.
    • Hierarchical Modeling of Mastic Asphalt in Layered Road Structures Based on the Mori-Tanaka Method 

      Author: Valenta , Richard; Šejnoha , Michal
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      We present an application of the Mori-Tanaka micromechanical model for a description of the highly nonlinear behavior of asphalt mixtures. This method is expected to replace an expensive finite element-based fully-coupled ...
    • A Micromechanics-Based Model for Stiffness and Strength Estimation of Cocciopesto Mortars 

      Author: Nežerka , Václav; Zeman , Jan
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      The purpose of this paper is to propose an inexpensive micromechanics-based scheme for stiffness homogenization and strength estimation of mortars containing crushed bricks, known as cocciopesto. The model utilizes the ...
    • Evaluation of Bioelectrical Impedance Spectroscopy for the Assessment of Extracellular Body Water 

      Author: Weyer , Sören; Röthlingshöfer , Lisa; Walter , Marian; Leonhardt , Steffen
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      This study evaluates bioelectrical impedance spectroscopy (BIS) measurements to detect body fluid status. The multifrequency impedance measurements were performed in five female pigs. Animals were connected to an extracorporeal ...
    • Geometrical Modeling of Concrete Microstructure for the Assessment of ITZ Percolation 

      Author: Rypl , Daniel; Bým , Tomáš
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      Percolation is considered to be a critical factor affecting the transport properties of multiphase materials. In the case of concrete, the transport properties are strongly dependent on the interfacial transition zone ...
    • Physical and Chemical Aspects of the Nucleation of Cement-Based Materials 

      Author: 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 ...
    • Micromechanical Analysis of Cement Paste with Carbon Nanotubes 

      Author: Šmilauer , Vít; Hlaváček , Petr; Padevět , Pavel
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      Carbon nanotubes (CNT) are an attractive reinforcement material for several composites, due to their inherently high strength and high modulus of elasticity. There are controversial results for cement paste with admixed ...
    • Flexible Multi-Electrode Array for Medical Applications 

      Author: Winkin , Nadine; Mokwa , Wilfried
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      A flexible multi-electrode array (MEA) with an embedded silicon chip for electrical stimulation of neurons or for recording action potentials has been manufactured and characterized. Possible improvements for medical ...
    • A Network Simulation Tool for Task Scheduling 

      Author: Votava , Ondřej
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      Distributed computing may be looked at from many points of view. Task scheduling is the viewpoint, where a distributed application can be described as a Directed Acyclic Graph and every node of the graph is executed ...
    • Energetic Approach to Large Strain Gradient Crystal Plasticity 

      Author: Kratochvíl , Jan; Kružík , Martin
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)
      We formulate a problem of the evolution of elasto-plastic materials subjected to external loads in the framework of large deformations and multiplicative plasticity. We focus on a spontaneous inhomogenization interpreted ...