Poslední příspěvky

  • Internet Geography and Real Estate Market 

    Komosný, Dan; Bulín, Martin; Ilgner, Petr (IEEE, 2017-11-09)
    This paper introduces a new spatial data resource for Internet geography. The idea is based on merging two up-to-now unrelated fields - the real estate market and Internet networking. The huge real estate market is present ...
  • Multifunction RF Filters Using OTA 

    Herencsár, Norbert; Vrba, Kamil (Springer, 2007-09-03)
    In this paper the procedure of RF filter design using two active elements OTA is shown. The general method of filter design using OTA amplifiers, when the fully connected feedback network was designed around the two OTA ...
  • Resistorless Electronically Tunable Grounded Inductance Simulator Design 

    Herencsár, Norbert; Kartci, Aslihan (IEEE, 2017-07-05)
    A new realization of grounded lossless positive inductance simulator (PIS) using simple inverting voltage buffer and unity-gain current follower/inverter (CF±) is reported. Considering the input intrinsic resistance of CF± ...
  • Compact MOS-RC Voltage-Mode Fractional-Order Oscillator Design 

    Kartci, Aslihan; Herencsár, Norbert; Koton, Jaroslav; Psychalinos, Costas (IEEE, 2017-09-04)
    A new voltage-mode fractional-order oscillator, employing in total 12 Metal-Oxide-Semiconductor (MOS) transistors, is introduced in this paper. The proposed circuit is composed of two operational transconductance amplifiers, ...
  • Voltage Gain-Controlled Third-Generation Current Conveyor and its All-Pass Filter Verification 

    Herencsár, Norbert; Kartci, Aslihan; Koton, Jaroslav; Tsirimokou, Georgia; Psychalinos, Costas (IEEE, 2017-09-04)
    The paper presents a new active building block (ABB) called minus-type voltage gain-controlled third-generation current conveyor (VGC-CCIII) in which the voltage gain between Y to X terminal can be controlled. The usefulness ...
  • A 3D Scan Model and Thermal Image Data Fusion Algorithms for 3D Thermography in Medicine 

    Chromý, Adam; Klíma, Ondřej (Hindawi, 2017-11-08)
    Objectives. At present, medical thermal imaging is still considered a mere qualitative tool enabling us to distinguish between but lacking the ability to quantify the physiological and nonphysiological states of the body. ...
  • Parkinson Disease Detection from Speech Articulation Neuromechanics 

    Gomez-Vilda, Pedro; Mekyska, Jiří; Ferrandez, Jose Manuel; Palacios-Alonso, Daniel; Gómez-Rodellar, Andrés; Biarge, María Victoria Rodellar; Galáž, Zoltán; Smékal, Zdeněk; Eliášová, Ilona; Košťálová, Milena; Rektorová, Irena (Frontiers, 2017-08-25)
    Aim: The research described is intended to give a description of articulation dynamics as a correlate of the kinematic behavior of the jaw-tongue biomechanical system, encoded as a probability distribution of an absolute ...
  • ECG features and methods for automatic classification of ventricular premature and ischemic heartbeats: A comprehensive experimental study 

    Maršánová, Lucie; Ronzhina, Marina; Smíšek, Radovan; Vítek, Martin; Němcová, Andrea; Smital, Lukáš; Nováková, Marie (Nature, 2017-09-11)
    Accurate detection of cardiac pathological events is an important part of electrocardiogram (ECG) evaluation and subsequent correct treatment of the patient. The paper introduces the results of a complex study, where various ...
  • 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 ...
  • 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 ...
  • 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 ...
  • Flow Injection Analysis Coupled with Carbon Electrodes as the Tool for Analysis of Naphthoquinones with Respect to Their Content and Functions in Biological Samples 

    Babula, Petr; Křížková, Soňa; Adam, Vojtěch; Hubálek, Jaromír; Kizek, René (MDPI, 2006-10-01)
    Naphthoquinones are one of the groups of secondary metabolites widespread in nature, where they mostly appear as chromatic pigments. They embody broad-range of biological actions from phytotoxic to fungicidal. An anticancer ...
  • An Investigation of Glutathione-Platinum(II) Interactions by Means of the Flow Injection Analysis Using Glassy Carbon Electrode 

    Zítka, Ondřej; Křížková, Soňa; Adam, Vojtěch; Trnková, Libuše; Hubálek, Jaromír; Kizek, René (MDPI, 2007-07-20)
    Glutathione was discovered by M. J. de Rey Pailhade at the end of the 19th century as the substance (hydrogénant le soufre), which was renamed by F.G. Hopkins in 1921. Hopkins first characterised the compound as a dipeptide ...
  • Study of Interactions between Metallothionein and Cisplatin by using Differential Pulse Voltammetry Brdicka's reaction and Quartz Crystal Microbalance 

    Húska, Dalibor; Adam, Vojtěch; Masařík, Michal; Hubálek, Jaromír; Trnková, Libuše; Kizek, René (MDPI, 2009-03-15)
    Treatment strategies for tumour diseases are progressively focusing on personalization of medicine. However, this focus requires methods revealing the early general biological mechanisms, including the formation anti-cancer ...
  • Sarcosine as a potential prostate cancer biomarker – A review 

    Cernei, Natalia Vladimirovna; Heger, Zbyněk; Gumulec, Jaromír; Zítka, Ondřej; Masařík, Michal; Babula, Petr; Eckschlager, Tomáš; Stiborová, Marie; Kizek, René; Adam, Vojtěch (MDPI, 2013-07-04)
    Prostate cancer (CaP) is the most common type of tumour disease in men. Early diagnosis of cancer of the prostate is very important, because the sooner the cancer is detected, the better it is treated. According to that ...
  • Serum metallothioneins in childhood tumours – A potential prognostic marker 

    Kruseová, Jarmila; Hynek, David; Adam, Vojtěch; Kizek, René; Průša, Richard; Hraběta, Jan; Eckschlager, Tomáš (MDPI, 2013-06-06)
    Metallothioneins (MT) are low molecular weight, cysteine-rich proteins maintaining metal ions homeostasis. They play a role in carcinogenesis and may also cause chemoresistance. The aim of the study was to explore the ...
  • Utilizing of square wave voltammetry to detect flavonoids in the presence of human urine 

    Adam, Vojtěch; Hubálek, Jaromír; Beklová, Miroslava; Trnková, Libuše; Kizek, René (MDPI, 2007-10-15)
    About biological affecting of flavonoids on animal organisms is known less, thus we selected flavonoids, flavanones and flavones, and their glycosides, which were examined as potential inducers of cytochrome(s) P450 when ...

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