Now showing items 9-24 of 24

  • DC Underwater Capillary Discharge With Symmetrical Hole: Diagnostics and Pumping Effect 

    Totová, Ivana; Krčma, František; Nikiforov, Anton; Leys, Christophe (IOP Publishing, 2014-06-03)
    Capillary discharge investigated by this work was created in the reactor using positive half-cycle of AC high voltage up to 2 kV. Electric field was created between two electrodes which were separated by the dielectric ...
  • Destruction of Direct Blue 106 Dye in Underwater Discharge 

    Němcová, Lucie; Krčma, František; Nikiforov, Anton; Leys, Christophe (IOP Publishing, 2014-06-03)
    An application of underwater discharge is one possible way how make the destruction of organic dyes. This contribution presents results of Direct Blue 106 destruction in discharge generated in bubbles. The initial conductivity ...
  • Detailed balance in reaction kinetics - consequence of mass conservation? 

    Pekař, Miloslav (Springer-Verlag, 2007-01-01)
    Detailed balance condition for triangular isomerisation mechanism is derived from the more general permanence of atoms, consequently, it should be viewed as a special equilibrium result of mass conservation.
  • Determination of Critical Parameters of Drug Substance Influencing Dissolution: A Case Study 

    Bojňanská, Erika; Kalina, Michal; Pařízek, Ladislav; Bartoníčková, Eva; Opravil, Tomáš; Veselý, Michal; Pekař, Miloslav; Jampílek, Josef (Hindawi Publishing Corporation, 2014-09-15)
    The purpose of this study was to specify critical parameters (physicochemical characteristics) of drug substance that can affect dissolution profile/dissolution rate of the final drug product manufactured by validated ...
  • Discharge Ignition in the Diaphragm Configuration Supplied by DC Non-Pulsing Voltage 

    Holíková, Lenka; Dřímalková, Lucie; Kozáková, Zdenka; Krčma, František (IOP Publishing, 2016-05-17)
    This work deals with the ignition of the discharge in the diaphragm configuration generated in water solutions containing supporting NaCl electrolyte. The reactor has volume of 110 ml and it is made of polycarbonate. HV ...
  • Effect of Hydrogen Plasma on Model Corrosion Layers of Bronze 

    Miková, Petra; Sázavská, Věra; Mika, Filip; Krčma, František (IOP Publishing, 2016-05-17)
    Our work is about plasmachemical reduction of model corrosion layers. The model corrosion layers were produced on bronze samples with size of 10 x 10 x 5 mm3, containing Cu and Sn. Concentrated hydrochloric acid was used ...
  • An Electrochemical NO2 Sensor Based on Ionic Liquid: Influence of the Morphology of the Polymer Electrolyte on Sensor Sensitivity 

    Kuberský, Petr; Altšmíd, Jakub; Hamáček, Aleš; Nešpůrek, Stanislav; Zmeškal, Oldřich (MDPI, 2015-11-11)
    A systematic study was carried out to investigate the effect of ionic liquid in solid polymer electrolyte (SPE) and its layer morphology on the characteristics of an electrochemical amperometric nitrogen dioxide sensor. ...
  • Excitation of Mercury Atoms in Nitrogen Post-Discharge 

    Krčma, František; Bocková, Ivana; Mazánková, Věra; Soural, Ivo; Hrdlička, Aleš; Kanický, Viktor (IOP Publishing, 2014-06-03)
    The work presents results obtained during spectroscopic observations of nitrogen DC flowing post-discharges at the total gas pressure of 1000 Pa and at the discharge current of 100 mA. Mercury traces were introduced into ...
  • Fluoride Anion Binding by Natural Lignite (South Moravian Deposit of Vienna Basin) 

    Pekař, Miloslav (Springer-Verlag, 2009-01-01)
    Natural lignite from South Moravia was tested for the sorption of fluoride anion in concentration range from 0.05 to 0.8 mmol/l. The lignite removes majority of fluorides and only about 13% of sorption is reversible upon ...
  • Influence of diaphragm configuration on DC diaphragm discharge breakdown in electrolyte solution 

    Dřímalková, Lucie; Holíková, Lenka; Kozáková, Zdenka; Krčma, František; Guaitella, Olivier (IOP Publishing, 2016-11-04)
    This paper deals with generation of diaphragm discharge in water solutions of sodium chloride with fixed conductivity of 275 microS. The photos were recorded by high-speed iCCD camera at defined times synchronized by the ...
  • Macroscopic derivation of the kinetic mass-action law 

    Pekař, Miloslav (Springer-Verlag, 2010-01-01)
    Using several reaction examples with experimentally determined rate equations, traditional mass action rate equations are shown to be simplified forms of polynomial approximation to a general rate function derived by ...
  • Microwave Plasma Torch Generated in Argon for Small Berries Surface Treatment 

    Bogdanov, Todor; Tsonev, Ivan; Marinova, Plamena; Benova, Evgenia; Rusanov, Krasimir; Rusanova, Mila; Atanassov, Ivan; Kozáková, Zdenka; Krčma, František (MDPI, 2018-10-10)
    Demand for food quality and extended freshness without the use of harmful chemicals has become a major topic over the last decade. New technologies are using UV light, strong electric field, ozone and other reactive agents ...
  • Optical properties of titania coatings prepared by inkjet direct patterning of the reverse micelles sol-gel composition 

    Schmiedová, Veronika; Dzik, Petr; Veselý, Michal; Zmeškal, Oldřich; Morozová, Magdalena; Klusoň, Petr (MDPI, 2015-08-12)
    This contribution deals with a study on the optical properties of titania thin films prepared by direct inkjet patterning of the reverse micelles sol-gel composition onto glass supports. The layers properties have been ...
  • Remote operation of the GOLEM tokamak with hydrogen and helium plasmas 

    Svoboda, Vojtěch; Dvornova, Anastasiia; Dejarnac, Renaud; Procházka, Michal; Zapryanov, Stanislav; Akhmetzhanov, Ruslan; Bogdanova, Maria; Dimitrova, Miglena; Dimitrov, Zhivko; Dřímalková, Lucie; Ivanov, Krasimir; Kruglov, Kirill; Marinova, Plamena; Masherov, Pavel; Mogulkin, Andrey; Mlynář, Jan; Stockel, Jan; Volynets, Andrey (IOP Science, 2016-11-04)
    The GOLEM tokamak was operated remotely via internet connection during the 6th International Workshop and Summer School on Plasma Physics. Performances of hydrogen and helium discharges are compared in this paper. It is ...
  • Surface-wave-sustained plasma torch for water treatment 

    Krčma, František (IOP Publishing, 2018-03-14)
    In this study the effects of water treatment by surface-wave-sustained plasma torch at 2.45 GHz are studied. The changes of the plasma characteristics during the interaction with the water and water physical and chemical ...
  • Vacuum Deposited Diphenyl-Diketo-Pyrrolopyrroles Structures with Photoelectrical Application 

    Georgiev, Yavor; Zhivkov, Ivaylo; Angelov, George; Takov, Tihomir; Přikryl, Radek; Stříteský, Stanislav; Vrchotová, Jana; Weiter, Martin (IOP Publishing Ltd, 2014-05-15)
    ITO|composite|Al structures with active DPP-C60 composite films (ratio 60:40 mass %) of about 100 nm thicknesses were prepared. The surface morphology of the films was studied by SEM imaging, which revealed uniform films ...