Poslední příspěvky

  • A Tunable Immitance Simulator with a Voltage Differential Current Conveyor 

    Metin, Bilgin; Atasoyu, Mesut; Arslan, Emre; Herencsár, Norbert; Cicekoglu, Oguzhan (IEEE, 2017-08-06)
    In this paper, an electronically tunable immitance circuit is proposed. The presented circuit can be configured as a tunable grounded inductor or capacitor multiplier. The proposed circuit employs a single active element ...
  • Fractional-Order Oscillator Design Using Unity-Gain Voltage Buffers and OTAs 

    Kartci, Aslihan; Herencsár, Norbert; Koton, Jaroslav; Brančík, Lubomír; Vrba, Kamil; Tsirimokou, Georgia; Psychalinos, Costas (IEEE, 2017-08-06)
    In this study, a new voltage-mode fractional-order oscillator using two unity-gain voltage buffers, two operational transconductance amplifiers, one resistor, and two capacitors is presented. The design procedure of ...
  • Preparation and Characterization of Zinc Materials Prepared by Powder Metallurgy 

    Krystýnová, Michaela; Doležal, Pavel; Fintová, Stanislava; Březina, Matěj; Zapletal, Josef; Wasserbauer, Jaromír (MDPI, 2017-09-27)
    The use of zinc-based materials as biodegradable materials for medical purposes is offered as a possible alternative to corrosion-less resistant magnesium-based materials. Zinc powders with two different particle sizes ...
  • The influence of barium sulphate and barium carbonate on the Portland cement 

    Zezulová, Anežka; Staněk, Theodor; Opravil, Tomáš (Elsevier Ltd., 2016-08-03)
    Shielding of different types of radiation should be studied these days when there is a great development in the field of nuclear science. Barium ions can shield different type of radiation, therefore, by incorporation of ...
  • Influence of Barium Oxide Additions on Portland Clinker 

    Zezulová, Anežka; Staněk, Theodor; Opravil, Tomáš (Institute of Rock Structure and Mechanics of The Czech Academy of Sciences, v. v. i., 2017-01-02)
    Nowadays, nuclear power plants are widespread around the world and research is of great interest. Together with nuclear research, shielding of different types of radiation is an important current topic of research aiming ...
  • Magnetic nanoparticles: From Design and Synthesis to Real World Applications 

    Kudr, Jiří; Haddad, Yazan Abdulmajeed Eyadh; Richtera, Lukáš; Heger, Zbyněk; Černák, Mirko; Adam, Vojtěch; Zítka, Ondřej (MDPI, 2017-09-01)
    The increasing number of scientific publications focusing on magnetic materials indicates growing interest in the broader scientific community. Substantial progress was made in the synthesis of magnetic materials of desired ...
  • Experimental investigation of torsional restraint provided to thin-walled purlins by sandwich panels under uplift load 

    Balázs, Ivan; Melcher, Jindřich; Belica, Andrej (Elsevier, 2016-10-19)
    Sandwich panels, usually used as members of wall or roof cladding, can provide lateral and torsional restraint to metal members of the substructure along their spans. They can positively influence the buckling resistance ...
  • Stability of Thin-Walled Beams with Lateral Continuous Restraint 

    Balázs, Ivan; Melcher, Jindřich (Vysoká škola báňská - Technická univerzita Ostrava, 2015-07-03)
    Metal beams of thin-walled cross-sections have been widely used in building industry as members of load-bearing structures. Their resistance is usually limited by lateral torsional buckling. It can be increased in case a ...
  • Influence of Uplift Load on Torsional Restraint Provided to Steel Thin-Walled Purlins by Sandwich Panels 

    Balázs, Ivan; Melcher, Jindřich (Elsevier, 2017-06-03)
    The sandwich panels have been widely used as members of roof and wall cladding. In addition to their primary function, they can provide lateral and torsional restraints to the supporting members and therefore contribute ...
  • Electrochemical Microsensors for the Detection of Cadmium(II) and Lead(II) Ions in Plants 

    Kryštofová, Olga; Trnková, Libuše; Adam, Vojtěch; Zehnálek, Josef; Hubálek, Jaromír; Babula, Petr; Kizek, René (MDPI, 2010-06-01)
    Routine determination of trace metals in complex media is still a difficult task for many analytical instruments. The aim of this work was to compare three electro-chemical instruments [a standard potentiostat (Autolab), ...
  • Ion exchange chromatography and mass spectrometric methods for analysis of cadmium-phytochelatin (II) complexes 

    Rodrigo, Miguel Ángel Merlos; Cernei, Natalia Vladimirovna; Komínková, Markéta; Zítka, Ondřej; Beklová, Miroslava; Zehnálek, Josef; Kizek, René; Adam, Vojtěch (MDPI, 2013-03-28)
    In this study, in vitro formed Cd-phytochelatin (PC2) complexes were characterized using ion exchange chromatography (IEC) and matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) mass spectrometry. The ...
  • Effect of Magnetic Nanoparticles on Tobacco BY-2 Cell Suspension Culture 

    Kryštofová, Olga; Sochor, Jiří; Zítka, Ondřej; Babula, Petr; Kudrle, Vít; Adam, Vojtěch; Kizek, René (MDPI, 2013-01-01)
    Nanomaterials are structures whose exceptionality is based on their large surface, which is closely connected with reactivity and modification possibilities. Due to these properties nanomaterials are used in textile industry ...
  • Za úpadkem Evropy je euro. 

    Rejnuš, Oldřich (Tribun EU, s. r. o., 2017-08-12)
    Příspěvek se zabývá problematikou společné evropské měny. Analyzuje klady a zápory zavedení eura a hodnotí důsledky, které jeho používání způsobilo nejen co se týče fungování ekonomik jednotlivých států eurozóny, tak i ve ...
  • Modern Micro and Nanoparticle-Based Imaging Techniques 

    Vaculovičová, Markéta; Pekárková, Jana; Drbohlavová, Jana; Kopel, Pavel; Babula, Petr; Hynek, David; Adam, Vojtěch; Eckschlager, Tomáš; Hubálek, Jaromír; Stiborová, Marie; Kaiser, Jozef; Kizek, René (MDPI, 2012-11-02)
    The requirements for early diagnostics as well as effective treatment of insidious diseases such as cancer constantly increase the pressure on development of efficient and reliable methods for targeted drug/gene delivery ...
  • Bio-Sensing of Cadmium(II) Ions Using Staphylococcus aureus 

    Sochor, Jiří; Zítka, Ondřej; Hynek, David; Krejčová, Ludmila; Trnková, Libuše; Adam, Vojtěch; Hubálek, Jaromír; Kynický, Jindřich; Vrba, Radimír; Kizek, René (MDPI, 2011-11-08)
    Cadmium, as a hazardous pollutant commonly present in the living environment, represents an important risk to human health due to its undesirable effects (oxidative stress, changes in activities of many enzymes, interactions ...
  • Platinum nanoparticles induce damage to DNA and inhibit DNA replication 

    Nejdl, Lukáš; Kudr, Jiří; Moulick, Amitava; Hegerová, Dagmar; Ruttkay-Nedecký, Branislav; Gumulec, Jaromír; Číhalová, Kristýna; Šmerková, Kristýna; Dostálová, Simona; Křížková, Soňa; Novotná, Marie; Kopel, Pavel; Adam, Vojtěch (PLOS, 2017-07-12)
    Sparsely tested group of platinum nanoparticles (PtNPs) may have a comparable effect as complex platinum compounds. The aim of this study was to observe the effect of PtNPs in in vitro amplification of DNA fragment of phage ...
  • Behaviour of zinc complexes and zinc sulphide nanoparticles revealed by using screen printed electrodes and spectrometry 

    Nejdl, Lukáš; Ruttkay-Nedecký, Branislav; Kudr, Jiří; Kremplová, Monika; Cernei, Natalia Vladimirovna; Prášek, Jan; Konečná, Marie; Hubálek, Jaromír; Zítka, Ondřej; Kynický, Jindřich; Kopel, Pavel; Kizek, René; Adam, Vojtěch (MDPI AQ, 2013-10-25)
    In this study, we focused on microfluidic electrochemical analysis of zinc complexes (Zn(phen)(his)Cl-2, Zn(his)Cl-2) and ZnS quantum dots (QDs) using printed electrodes. This method was chosen due to the simple (easy to ...
  • Microwave-assisted synthesis of goethite nanoparticles used for removal of Cr(VI) from aqueous solution 

    Nguyen, Dính Vinh; Kynický, Jindřich; Ambrožová, Pavlína; Adam, Vojtěch (MDPI, 2017-07-01)
    The microwave-assisted synthesis of goethite nanoparticles has been studied. The samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), thermogravimetric analysis (TGA), differential ...
  • Determination of Zinc, Cadmium, Lead, Copper and Silver Using a Carbon Paste Electrode and a Screen Printed Electrode Modified with Chromium(III) Oxide 

    Koudelková, Zuzana; Syrový, Tomáš; Ambrožová, Pavlína; Moravec, Zdeněk; Kubáč, Lubomír; Hynek, David; Richtera, Lukáš; Adam, Vojtěch (MDPI, 2017-08-01)
    In this study, the preparation and electrochemical application of a chromium(III) oxide modified carbon paste electrode (Cr-CPE) and a screen printed electrode (SPE), made from the same material and optimized for the simple, ...
  • Quantum Dots - Characterization, Preparation and Usage in Biological Systems 

    Drbohlavová, Jana; Adam, Vojtěch; Kizek, René; Hubálek, Jaromír (MDPI, 2009-02-20)
    The use of fluorescent nanoparticles as probes for bioanalytical applications is a highly promising technique because fluorescence-based techniques are very sensitive. Quantum dots (QDs) seem to show the greatest promise ...

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