Procházení Acta Polytechnica. 2017, vol. 57 dle data publikování
Zobrazují se záznamy 1-20 z 56
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PLATFORM WITH CAMERA SYSTEM FOR MEASUREMENT OF COMPENSATORY MOVEMENTS OF SMALL ANIMALS
(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 ... -
UNDERGROUND AIR DUCT TO CONTROL RISING MOISTURE IN HISTORIC BUILDINGS: IMPROVED DESIGN AND ITS DRYING EFFICIENCY
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)The underground air ducts along peripheral walls of a building are a remediation method, which principle is to enable an air flow along the moist building structure’s surface to allow a sufficient evaporation of moisture ... -
RELATION BETWEEN LEFT VENTRICULAR UNLOADING DURING ECMO AND DRAINAGE CATHETER SIZE ASSESSED BY MATHEMATICAL MODELING
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)The flow-dependent left ventricle overload is a well-known complication of the veno-arterial extracorporeal membrane oxygenation in a severe cardiogenic shock, which leads to a distension of the left ventricle and, frequently, ... -
POSSIBILITY OF MONITORING OF PAHs DISTRIBUTION IN THE VERTICAL PROFILE AT THE BACKGROUND METEOROLOGICAL STATION KREŠÍN RETRACTED
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)ARTICLE HAS BEEN RETRACTED BY EDITORIAL OFFICE, UPON AN APPROVAL OF ALL AUTHORSThe contaminants present in the atmosphere have a substantial impact on public health.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 ... -
DESIGN OF PARTICULATE MATERIAL COMPACTOR ROLLS DIAMETER
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)At present, in a period of an industrial expansion great emphasis is placed on the environment. That means aiming for a reduced energy consumption, and also lessening dustiness from very fine powder material. This category ... -
TRANSITION METAL OXIDES AS MATERIALS FOR ADDITIVE LASER MARKING ON STAINLESS STEEL
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)The product information plays an important role in the improvement of the manufacturing, allowing the tracking of the part through the full life cycle. Laser marking is one of the most versatile techniques for this purpose. ... -
PRELIMINARY STUDY ON COMBUSTION AND OVERALL PARAMETERS OF SYNGAS FUEL MIXTURES FOR SPARK IGNITION COMBUSTION ENGINE
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)This paper presents a numerical study on a group of alternative gaseous fuels – syngases, and their use in the spark-ignition internal combustion engine Lombardini LGW 702. These syngas fuel mixtures consist mainly of ... -
JET ENGINE INLET DISTORTION SCREEN AND DESCRIPTOR EVALUATION
(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 ... -
NUMERICAL MODELLING OF THE SOIL BEHAVIOUR BY USING NEWLY DEVELOPED ADVANCED MATERIAL MODEL
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)This paper describes a theoretical background, implementation and validation of the newly developed Jardine plastic hardening-softening model (JPHS model), which can be used for numerical modelling of the soils behaviour. ... -
HEAT TRANSFER ENHANCEMENT AND PRESSURE DROP OF GROOVED ANNULUS OF DOUBLE PIPE HEAT EXCHANGER
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)This investigation was performed to experimentally investigate the enhancement of heat transfer and the friction of an annulus in a double pipe heat exchanger system with rectangular grooves in the turbulent flow regime. ... -
TEARING MODES GROWTH RATE AMPLIFICATION DUE TO FINITE CURRENT RELAXATION
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)In this work, we explore the influence of perturbative wavelengths, shorter than those usually considered, on the growth rate γ of the tearing modes. Thus, we adopt an extended form of Ohm’s law, which includes a finite ... -
USE OF DISC SPRINGS IN A PELLET FUEL MACHINE FOR PRESSURE REGULATION AND PREVENTION OF DAMAGE
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)The use of biomass fuel pellets is becoming widespread as a renewable and environment-friendly energy. Pellet fuels are produced in various pellet machine types. Pellet machines encounter problems such as pressure ... -
SILOXANES REMOVAL FROM BIOGAS USING ACTIVATED CARBON
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)SiO2 deposits which cause technical problems on combustion equipment are built by combustion of biogas containing siloxanes. Therefore, in these cases, the siloxanes must be removed from the biogas. For siloxane removal ... -
FUNCTIONAL REALIZATIONS OF LIE ALGEBRAS AS NOETHER POINT SYMMETRIES OF SYSTEMS
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)Functional realizations of Lie algebras are applied to the problem of determining Lie and Noether point symmetries of Lagrangian systems in N dimensions, particularly in the plane. This encompasses both the case of ... -
ALGEBRAIC DESCRIPTION OF SHAPE INVARIANCE REVISITED
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)We revisit the algebraic description of shape invariance method in one-dimensional quantum mechanics. In this note we focus on four particular examples: the Kepler problem in flat space, the Kepler problem in spherical ... -
DESIGN AND CONSTRUCTION OF A PROTOTYPE SOLAR UPDRAFT CHIMNEY IN ASWAN/EGYPT
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)This work is part of a joint project funded by the Science and Technology Development Fund (STDF) of the Arab republic of Egypt and the Federal Ministry of Education and Research (BMBF) of the Federal Republic of Germany. ... -
CALCULATIONS OF ION TRAJECTORIES AT MAGNETOPLASMA SEPARATION AND EXPERIMENTS WITH POLYATOMIC GASES
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)Calculated trajectories of ions with different masses, indicating the possibility of a mixture separation, are obtained. Comparative experiments for plasma of monatomic and polyatomic gases (Ar, N2, CO2), upon combination ... -
ELECTRICAL AND THERMODYNAMIC PROPERTIES OF A COLLAGEN SOLUTION
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)This paper focuses on measurements of the electrical properties, the specific heat capacity and the thermal conductivity of a collagen solution (7.19% mass fraction of native bovine collagen in water). The results of our ... -
PROPERTIES AND MICROSTRUCTURE OF CEMENT PASTE INCLUDING RECYCLED CONCRETE POWDER
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)The disposal and further recycling of concrete is being investigated worldwide, because the issue of complete recycling has not yet been fully resolved. A fundamental difficulty faced by researchers is the reuse of the ... -
AN AIRPLANE WITH UNCONVENTIONALLY PLACED PROPELLER POWER UNIT
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)The significance of the influence of operating propellers on the aircraft aerodynamic characteristics is well-known. Wind tunnel testing of an airplane model with operating propellers is a complex task regarding the required ...