Zobrazují se záznamy 1-20 z 89

  • Evaluation of the Surfactant Leaching from Alkali-Activated Slag-Based Composites Using Surface-Tension Measurements 

    Bílek, Vlastimil; Kalina, Lukáš; Bartoníčková, Eva; Pořízka, Jaromír (Institute of Metals and Technology, 2019-02-01)
    This work tries to evaluatethe amount of surfactant leached from the AAS-based mortars using a very simple surface-tension (ST) measuring technique.Mortars based on AAS with and without2%ofPEGvarying in molecular weight ...
  • Atomic force microscopy analysis of nanoparticles in non-ideal conditions 

    Klapetek, Petr; Valtr, Miroslav; Nečas, David; Salyk, Ota; Dzik, Petr (Springer Open, 2011-08-30)
    Nanoparticles are often measured using atomic force microscopy or other scanning probe microscopy methods. For isolated nanoparticles on flat substrates, this is a relatively easy task. However, in real situations, we often ...
  • 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. ...
  • Organic Electrochemical Transistor Microplate for Real-Time Cell Culture Monitoring 

    Salyk, Ota; Víteček, Jan; Omasta, Lukáš; Šafaříková, Eva; Stříteský, Stanislav; Vala, Martin; Weiter, Martin (MDPI, 2017-09-27)
    A microplate with a multielectrode array of 96 organic electrochemical transistors (OECTs) based on the semiconductive polymer poly(3,4-ethylenedioxythio-phene):poly(styrene sulfonic acid) PEDOT:PSS was developed and ...
  • Stability of collagen scaffold implants for animals with iatrogenic articular cartilage defoects 

    Jančář, Josef; Vojtová, Lucy; Nečas, Alois; Srnec, Robert; Urbanová, Lucie; Crha, Michal (University of Veterinary and Pharmaceutical Sciences in Brno, 2009-12-15)
    Synthesis and characterization of biodegradable hydrogels based on collagen modified by addition of synthetic biodegradable copolymer intended for preparation of porous scaffolds for mesenchymal stem cells used for possible ...
  • The Effect of Soybean-Derived Phytoestrogens on Concentrations of Plasma Isoflavones, 15-keto-13,14-dihydroprostaglandin F2alfa and Progesterone in Dairy Cows 

    Watzková, Jarmila; Křížová, Ludmila (University of Veterinary and Pharmaceutical Sciences in Brno, 2010-09-19)
    The objective of the study was to determine the effect of soybean-derived phytoestrogens and their metabolites on the activity of sex hormones during the oestrous cycle in multiparous lactating dairy cows. The experiment ...
  • Application of brick grind dust in systems based on Portland cement 

    Palovčík, Jakub; Opravil, Tomáš; Novotný, Radoslav; Másilko, Jiří (IOP Publishing, 2018-07-12)
    This paper deals with possibilities of application brick-grind-dust which is a secondary product from manufacturing of grinded bricks. This product is usually partially returned to brick manufacturing or buried on a land ...
  • Fracture properties of concrete specimens made from alkali activated binders. 

    Šimonová, Hana; Kucharczyková, Barbara; Topolář, Libor; Bílek, Vlastimil; Keršner, Zbyněk (IOP Publishing, 2017-09-15)
    The aim of this paper is to quantify crack initiation and other fracture properties – effective fracture toughness and specific fracture energy – of two types of concrete with an alkali activated binder. The beam specimens ...
  • Aerosol Flow Homogenization in the Spray Polyphenylene Vinylene Thin Film Deposition 

    Milenkov, Viktor; Vrchotová, Jana; Zhivkov, Ivaylo; Yordanov, Rumen S.; Vala, Martin; Mladenova, Daniela; Weiter, Martin (IOP Publishing, 2014-05-15)
    Two different spray deposition (SD) techniques were compared on polyvinylene (MDMO-PPV) used as a model material. SD and homogenized (h-SD) techniques were compared. Films of about 1 micron thickness were prepared by SD ...
  • 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 ...
  • Vacuum deposited Diphenyl-Diketo-Pyrrolopyrrol solar cell structures 

    Georgieva, Galya; Dobrikov, Georgi; Heinrichová, Patricie; Karashanova, Daniela; Dimov, Deyan; Vala, Martin; Weiter, Martin; Zhivkov, Ivaylo (IOP Publishing, 2016-04-07)
    In the present paper, DPP(TBFu)2:C60 donor-acceptor composite films were prepared by vacuum co-deposition and the photoelectrical properties of ITO|PEDOT:PSS| DPP(TBFu)2:C60|Al solar cell samples were investigated.
  • 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 ...
  • Application of low temperature plasmas for restoration/conservation of archaeological objects 

    Krčma, František; Blahová, Lucie; Miková, Petra; Graham, William; Grossmannová, Hana; Holíková, Lenka; Horák, Jakub; Janová, Drahomíra; Kelsey, Colin Patrick; Kozáková, Zdenka; Mazánková, Věra; Procházka, Michal; Přikryl, Radek; Řádková, Lucie; Sázavská, Věra; Vašíček, Michal; Veverková, Radka; Zmrzlý, Martin (IOP Publishing, 2014-12-18)
    The low temperature low-pressure hydrogen based plasmas were used to study the influence of processes and discharge conditions on corrosion removal. The capacitive coupled RF discharge in the continuous or pulsed regime ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • Plasmachemical Conservation of Corroded Metallic Objects 

    Sázavská, Věra; Veverková, Radka; Krčma, František; Řádková, Lucie; Miková, Petra; Přikryl, Radek; Procházka, Michal (IOP Publishing, 2016-05-17)
    Plasmachemical process for conservation of metallic objects is a new way of effective and fast treatment of corroded objects. This process consists of two main steps: corrosion removal and deposition of a protecting film. ...
  • 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 ...
  • Barrier SiO2-like coatings for archaeological artefacts preservation 

    Procházka, Michal; Blahová, Lucie; Krčma, František (IOP Publishing, 2016-11-04)
    Thin film chemical vapour deposition technique has been used for more than 50 years. Introducing organosilicones as precursors, e.g. hexamethyldisiloxane (HMDSO) or tetraethylorthosilicate (TEOS), brought new possibilities ...