Poslední příspěvky

  • Analysis and Verification of Identical-Order Mixed-Matrix Fractional-Order Capacitor Networks 

    Kartci, Aslihan; Agambayev, Agamyrat; Herencsár, Norbert; Salama, Khaled Nabil (IEEE, 2018-07-02)
    In the open literature while capacitors are introduced with -90 degrees phase angle, here we described our fabricated polymer composite, mixed matrix, as a fractional-order capacitor (FoC). The effect on phase and ...
  • Fractional-Order Hartley Oscillator 

    Agambayev, Agamyrat; Kartci, Aslihan; Hassan, Ali H.; Herencsár, Norbert; Bagci, Hakan; Salama, Khaled Nabil (IEEE, 2018-07-02)
    A fractional-order capacitor (FOC) is developed using a Molybdenum disulfide ferroelectric polymer composite. The fabricated FOC exhibits constant phase over five decades between 100 Hz-10 MHz, which is the broadest operating ...
  • Investigation into the Effect of Molds in Grasses on Their Content of Low Molecular Mass Thiols 

    Skládanka, Jiří; Adam, Vojtěch; Zítka, Ondřej; Kryštofová, Olga; Beklová, Miroslava; Kizek, René; Havlíček, Zdeněk; Sláma, Petr; Nawrath, adam (MDPI, 2012-10-24)
    The aim of this study was to investigate the effect of molds on levels of low molecular mass thiols in grasses. For this purpose, the three grass species Lolium perenne, Festulolium pabulare and Festulolium braunii were ...
  • Evaluation of Antioxidant Activity, Polyphenolic Compounds, Amino Acids and Mineral Elements of Representative Genotypes of Lonicera edulis 

    Sochor, Jiří; Juříková, Tunde; Pohanka, Miroslav; Škutková, Helena; Baroň, Mojmír; Tomášková, Lenka; Balla, Štefan; Klejdus, Bořivoj; Pokluda, Robert; Mlček, Jiří; Trojáková, Zuzana; Šaloun, Jan (MDPI, 2014-05-21)
    The aim of this study was to evaluate the bioactive substances in 19 berry cultivars of edible honeysuckle (Lonicera edulis). A statistical evaluation was used to determine the relationship between the content of selected ...
  • An In Vitro Corrosion Study of Open Cell Iron Structures with PEG Coating for Bone Replacement Applications 

    Lucia, Haverová; Orinaková, Renáta; Oriňak, Andrej; Gorejová, Radka; Baláž, Matej; Vanýsek, Petr; Kupková, Miriam; Hrubovčáková, Monika; Mudroň, Pavol; Radoňák, Jozef; Orságová Králová, Zuzana; Morovská Turoňová, Andrea (MDPI, 2018-06-28)
    Iron-based substrates with polyethylene glycol coating were prepared as possible materials for biodegradable orthopedic implants. Biodegradable materials that provide mechanical support of the diseased tissue at the time ...
  • Validation of Fractional-Order Lowpass Elliptic Responses of (1 + )-Order Analog Filters 

    Kubánek, David; Freeborn, Todd; Koton, Jaroslav; Dvořák, Jan (MDPI, 2018-12-13)
    In this paper, fractional-order transfer functions to approximate the passband and stopband ripple characteristics of a second-order elliptic lowpass filter are designed and validated. The necessary coefficients for these ...
  • Changes in Phonation and Their Relations with Progress of Parkinson’s Disease 

    Galáž, Zoltán; Mekyska, Jiří; Zvončák, Vojtěch; Mucha, Ján; Kiska, Tomáš; Smékal, Zdeněk; Eliášová, Ilona; Mráčková, Martina; Košťálová, Miroslava; Rektorová, Irena; Faúndez Zanuy, Marcos; Alonso-Hernandez, Jesus; Gomez-Vilda, Pedro (MDPI, 2019-01-22)
    Hypokinetic dysarthria, which is associated with Parkinson’s disease (PD), affects several speech dimensions, including phonation. Although the scientific community has dealt with a quantitative analysis of phonation in ...
  • Mathematical evaluation of the amino acid and polyphenol content and antioxidant activities of fruits from different apricot cultivars 

    Sochor, Jiří; Škutková, Helena; Babula, Petr; Zítka, Ondřej; Cernei, Natalia Vladimirovna; Rop, Otakar; Krška, Boris; Adam, Vojtěch; Provazník, Ivo; Kizek, René (MDPI, 2011-09-01)
    Functional foods are of interest because of their significant effects on human health, which can be connected with the presence of some biologically important compounds. In this study, we carried out complex analysis of ...
  • Boundary Value Problems for Some Important Classes of Recurrent Relations with Two Independent Variables 

    Stevič, Stevo; Iričanin, Bratislav; Šmarda, Zdeněk (MDPI, 2017-12-20)
    It is shown that complex-valued boundary value problems for several classes of recurrent relations with two independent variables, of some considerable interest, are solvable on the so called combinatorial domain
  • Development of a magnetic electrochemical bar code array for point mutation detection in the H5N1 neuraminidase gene 

    Krejčová, Ludmila; Hynek, David; Kopel, Pavel; Merlos Rodrigo, Miguel Ángel; Adam, Vojtěch; Hubálek, Jaromír; Babula, Petr; Trnková, Libuše; Kizek, René (MDPI, 2013-07-15)
    Since its first official detection in the Guangdong province of China in 1996, the highly pathogenic avian influenza virus of H5N1 subtype (HPAI H5N1) has reportedly been the cause of outbreaks in birds in more than 60 ...
  • Effect of five different stages of ripening on chemical compounds in medlar (Mespilus germanica L.) 

    Rop, Otakar; Sochor, Jiří; Juříková, Tunde; Zítka, Ondřej; Škutková, Helena; Mlček, Jiří; Salaš, Petr; Krška, Boris; Babula, Petr; Adam, Vojtěch; Kramářová, Daniela; Beklová, Miroslava; Provazník, Ivo; Kizek, René (MDPI, 2010-12-28)
    Study of changes of nutritional value of fruit during the process of ripening can help to estimate the optimal date for fruit harvesting to achieve the best quality for direct consumption and further utilization. The aim ...
  • Iterative Precise Conductivity Measurement with IDEs 

    Hubálek, Jaromír (MDPI, 2015-05-22)
    The paper presents a new approach in the field of precise electrolytic conductivity measurements with planar thin- and thick-film electrodes. This novel measuring method was developed for measurement with comb-like electrodes ...
  • Functionalized Solid Electrodes for Electrochemical Biosensing of Purine Nucleobases and Their Analogues: A Review 

    Sharma, Vimal Kumar; Jelen, František; Trnková, Libuše (MDPI, 2015-01-14)
    Interest in electrochemical analysis of purine nucleobases and few other important purine derivatives has been growing rapidly. Over the period of the past decade, the design of electrochemical biosensors has been focused ...
  • Content of phenolic compounds and antioxidant capacity in fruits of selected genotypes of apricot with resistance against Plum pox virus 

    Sochor, Jiří; Zítka, Ondřej; Škutková, Helena; Pavlík, Dušan; Babula, Petr; Krška, Boris; Horna, Aleš; Adam, Vojtěch; Provazník, Ivo; Kizek, René (MDPI, 2010-09-07)
    Research on natural compounds is increasingly focused on their effects on human health. In this study, we were interested in the evaluation of nutritional value expressed as content of total phenolic compounds and antioxidant ...
  • A New Method for 2D Materials Properties Modulation by Controlled Induced Mechanical Strain 

    Gablech, Imrich; Pekárek, Jan; Klempa, Jaroslav; Vyroubal, Petr; Svatoš, Vojtěch; Neužil, Pavel (MDPI, 2018-12-07)
    This paper proposes a new method for characterization of 2D materials under the precisely specified conditions. It is achieved by integration of a 2D material as a field effect transistors structures with a piezoelectric ...
  • Design of pressure sensor based on optical fiber Bragg grating lateral deformation 

    Urban, František; Kadlec, Jaroslav; Vlach, Radek; Kuchta, Radek (MDPI, 2010-12-08)
    This paper describes steps involved in the design and realization of a new type of pressure sensor based on the optical fiber Bragg grating. A traditional pressure sensor has very limited usage in heavy industrial environments, ...
  • New chaotic dynamical system with a conic-shaped equilibrium located on the plane structure 

    Petržela, Jiří; Götthans, Tomáš (MDPI, 2017-09-22)
    This paper presents a new autonomous deterministic dynamical system with equilibrium degenerated into a plane-oriented hyperbolic geometrical structure. It is demonstrated via numerical analysis and laboratory experiments ...
  • A Novel Tool for Supervised Segmentation Using 3D Slicer 

    Chalupa, Daniel; Mikulka, Jan (MDPI, 2018-11-12)
    The rather impressive extension library of medical image-processing platform 3D Slicer lacks a wide range of machine-learning toolboxes. The authors have developed such a toolbox that incorporates commonly used machine-learning ...
  • Identification and Monitoring of Parkinson’s Disease Dysgraphia Based on Fractional-Order Derivatives of Online Handwriting 

    Mucha, Ján; Mekyska, Jiří; Galáž, Zoltán; Faúndez Zanuy, Marcos; Lopez-de-Ipina, Karmele; Zvončák, Vojtěch; Kiska, Tomáš; Smékal, Zdeněk; Brabenec, Luboš; Rektorová, Irena (MDPI, 2019-01-11)
    Parkinson’s disease dysgraphia affects the majority of Parkinson’s disease (PD) patients and is the result of handwriting abnormalities mainly caused by motor dysfunctions. Several effective approaches to quantitative PD ...
  • Cyclicity in EL-hypergroups 

    Novák, Michal; Křehlík, Štěpán; Cristea, Irina (MDPI, 2018-11-07)
    In the algebra of single-valued structures, cyclicity is one of the fundamental properties of groups. Therefore, it is natural to study it also in the algebra of multivalued structures (algebraic hyperstructure theory). ...

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