Acta Polytechnica. 2015, vol. 55, no. 4

 

Now showing items 1-11 of 11

    • A SYSTEM AND A DEVICE FOR ISOLATING CIRCULATING TUMOR CELLS FROM THE PERIPHERAL BLOOD IN VIVO 

      Author: Mego , Michal; Kocifaj , Miroslav; Kundracik , František
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      Circulating tumor cells (CTC) play a crucial role in disseminating tumors and in the metastatic cascade. CTCs are found only in small numbers, and the limited amount of isolated CTCs makes it impossible to characterize ...

    • SIMULATION ANALYSIS OF PREHEATER CHARGE TO THE ROTARY FURNACE 

      Author: Mikula , Jan; Palička , Pavol; Kerekanic , Jan
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      Mathematical modeling of heat aggregates is one of the fundamental methods of the mathematical modelling research. A mathematical model based on the method of elementary balances was created for the thermal treatment of ...

    • CFD SIMULATION OF THE HEAT TRANSFER PROCESS IN A CHEVRON PLATE HEAT EXCHANGER USING THE SST TURBULENCE MODEL 

      Author: Skočilas , Jan; Palaziuk , Ievgen
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      This paper deals with a computational fluid dynamics (CFD) simulation of the heat transfer process during turbulent hot water flow between two chevron plates in a plate heat exchanger. A three-dimensional model with the ...

    • NOx EMISSIONS FROM BUBBLING FLUIDIZED BED COMBUSTION OF LIGNITE COAL 

      Author: Skopec , Pavel; Hrdlička , Jan; Opatřil , Jan; Štefanica , Jiří
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      This paper presents experimental results of NOx emission measurements for combustion of two kinds of coal in a bubbling fluidized bed combustor. The tested fuels were Czech brown coal (CBC) and German young brown coal ...

    • PRODUCTION OF PROTOTYPE PARTS USING DIRECT METAL LASER SINTERING TECHNOLOGY 

      Author: Sedlak , Josef; Zemčík , Oskar; Slaný , Martin; Chladil , Josef; Kouřil , Karel; Sekerka , Vít; Rozkošný , Luboš
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      Unconventional methods of modern materials preparation include additive technologies which involve the sintering of powders of different chemical composition, granularity, physical, chemical and other utility properties. ...

    • COMPARISON OF MATHEMATICAL MODELS FOR HEAT EXCHANGERS OF UNCONVENTIONAL CHP UNITS 

      Author: Durcansky , Peter
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      An unconventional CHP unit with a hot air engine is designed as the primary energy source with fuel in the form of biomass. The heat source is a furnace designed for combustion of biomass, whether in the form of wood logs ...

    • ASSESSMENT OF POSTURAL INSTABILITY IN PATIENTS WITH A NEUROLOGICAL DISORDER USING A TRI-AXIAL ACCELEROMETER 

      Author: Hanakova , Lenka; Socha , Vladimir; Schlenker , Jakub; Cakrt , Ondrej; Kutilek , Patrik
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      Current techniques for quantifying human postural stability during quiet standing have several limitations. The main problem is that only two movement variables are evaluated, though a better description of complex ...

    • FEATURES OF STRUCTURE FORMATION AND CHANGES IN THE MECHANICAL PROPERTIES OF CAST Al-Mg-Si-Mn ALLOY WITH THE ADDITION OF (Ti+Zr) 

      Author: Trudonoshyn , Oleksandr; Puchnin , Maxim; Mykhalenkov , Kostiantyn
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      The as-cast and heat-treated structure of permanent mould castings of AlMg5Si2Mn alloys with different contents of Ti has been investigated by differential scanning calorimetry, hardness and microhardness measurements, ...

    • EFFECT OF THE ADDITION OF LI ON THE STRUCTURE AND MECHANICAL PROPERTIES OF HYPOEUTECTIC Al-Mg2Si ALLOYS 

      Author: Prach , Olena; Horník , Jakub; Mykhalenkov , Kostiantyn
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      Alloys with various contents of Li were studied by means of  differential scanning calorimetry (DSC), transmission electron microscopy (TEM) and energy dispersive X-Ray microanalysis (EDX).The TEM investigations revealed ...

    • STUDY OF L–H TRANSITION AND PEDESTAL WIDTH BASED ON TWO-FIELD BIFURCATION AND FIXED POINT CONCEPTS 

      Author: Chatthong , Boonyarit; Onjun , Thawatchai
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      The L–H transition in magnetic confinement plasmas is investigated on the basis of concepts of two-field bifurcation and fixed-point stability. A set of heat and particle transport equations with both neoclassical and ...

    • ABOUT THE UNIFORMITY AND THE STABILITY OF A VOLUME DISCHARGE IN HELIUM IN NEAR-ATMOSPHERIC PRESSURE 

      Author: Kurbanismailov Suliymanovich, Vali; Omarov Alievich, Omar; Ragimkhanov Balaglanovich, Gadjimirza; Aliverdiev Alexandrovich, Abutrab
      (České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)
      We present experimental electric and time-spatial characteristics of a volume discharge and of the transition from a volume burning stage into a channel mode nearing atmospheric pressure. We show that the discharge uniformity ...