Now showing items 1-20 of 95

  • A 0.3-V 98-dB Rail-to-Rail OTA in 0.18 um CMOS 

    Khateb, Fabian; Kulej, Tomasz (IEEE, 2020-02-06)
    A new solution for an ultra-low-voltage, ultra-low-power operational transconductance amplifier (OTA) is presented in the paper. The design exploits a three-stage structure with a Reversed Miller Compensation Scheme, where ...
  • 0.3-V Nanopower Biopotential Low-Pass Filter 

    Kulej, Tomasz; Khateb, Fabian; Kumngern, Montree (IEEE, 2020-06-29)
    This paper presents a compact power-efficient CMOS fourth-order low-pass filter suitable for electrocardiogram (ECG) acquisition systems. The CMOS structure of the proposed filter utilize the bulkdriven technique and ...
  • 0.5 V fifth-order butterworth low-pass filter using multiple-input OTA for ECG applications 

    Kumngern, Montree; Khateb, Fabian; Kulej, Tomasz (MDPI, 2020-12-21)
    This paper presents a 0.5 V fifth-order Butterworth low-pass filter based on multiple-input operational transconductance amplifiers (OTA). The filter is designed for electrocardiogram (ECG) acquisition systems and operates ...
  • 0.5 V Fully Differential Universal Filter Based on Multiple Input OTAs 

    Jaikla, Winai; Khateb, Fabian; Kumngern, Montree; Kulej, Tomasz; Kumar Ranjan, Rajeev; Suwanjan, Peerawut (IEEE, 2020-11-17)
    The design of a low-power, low-voltage, fully-differential universal biquad filter is presented in this work, which is constructed from four multiple-input gate-driven operational transconductance amplifiers (MI-OTAs) along ...
  • A 1 V 92 dB SNDR 10 kHz Bandwidth Second-Order Asynchronous Delta-Sigma Modulator for Biomedical Signal Processing 

    Kledrowetz, Vilém; Fujcik, Lukáš; Prokop, Roman; Háze, Jiří (MDPI, 2020-07-25)
    In this paper, a second-order asynchronous delta-sigma modulator (ADSM) is proposed based on the active-RCintegrators. The ADSM is implemented in the 0.18 µ m CMOS Logic or Mixed-Signal/RF, General Purpose process from the ...
  • About v-i Pinched Hysteresis of Some Non-Memristive Systems 

    Biolek, Dalibor; Biolek, Zdeněk; Biolková, Viera; Ascoli, Alon; Tetzlaff, Ronald (Hindawi, 2018-09-24)
    A special subset of two-terminal elements providing pinched hysteresis loops in the voltage-current plane with the lobe area increasing with the frequency is analysed. These devices are identified as non-memristive systems ...
  • Acceptability and sensory evaluation of energy bars and protein bars enriched with edible insect 

    Adámek, Martin; Adámková, Anna; Mlček, Jiří; Borkovcová, Marie; Bednářová, Martina (HACCP Consulting, 2018-04-24)
    For consumers, one of the basic criteria of choosing a foodstuff, apart from nutritional values, is their taste and smell. In edible insect as a novel food, these criteria are not quite decisive. The main criterion in the ...
  • Amperometric Sensor for Detection of Chloride Ions 

    Trnková, Libuše; Adam, Vojtěch; Hubálek, Jaromír; Babula, Petr; Kizek, René (MDPI, 2008-09-15)
    Chloride ion sensing is important in many fields such as clinical diagnosis, environmental monitoring and industrial applications. We have measured chloride ions at a carbon paste electrode (CPE) and at a CPE modified with ...
  • Analysis of Machinability and Crack Occurrence of Steels 1.2363 and 1.2343ESR Machined by Die-Sinking EDM 

    Mouralová, Kateřina; Beneš, Libor; Bednář, Josef; Zahradníček, Radim; Prokeš, Tomáš; Fries, Jiří (MDPI, 2020-04-19)
    Die-sinking electric discharge machining (EDM) is an indispensable technological operation, especially in the production of molds and all internal and external shapes and cavities. For this reason, the effect of machine ...
  • Analysis of the machinability of copper alloy Ampcoloy by WEDM 

    Mouralová, Kateřina; Beneš, Libor; Prokeš, Tomáš; Bednář, Josef; Zahradníček, Radim; Jankových, Róbert; Fries, Jiří; Vontor, Jakub (MDPI, 2020-02-11)
    The unconventional technology wire electrical discharge machining is widely used in all areas of industry. For this reason, there is always an effort for efficient machining at the lowest possible cost. For this purpose, ...
  • Antibacterial activity of AgNPs-TiO2 nanotubes: influence of different nanoparticle stabilizers 

    Bílek, Ondřej; Fialová, Tatiana; Otáhal, Alexandr; Adam, Vojtěch; Šmerková, Kristýna; Fohlerová, Zdenka (Royal Society of Chemistry, 2020-12-15)
    Enhanced antibacterial properties of nanomaterials such as TiO2 nanotubes (TNTs) and silver nanoparticles (AgNPs) have attracted much attention in biomedicine and industry. The antibacterial properties of nanoparticles ...
  • Apoferritin modified magnetic particles as doxorubicin carriers for anticancer drug delivery 

    Blažková, Iva; Nguyen, Hoai Viet; Dostálová, Simona; Kopel, Pavel; Stanisavljevic, Maja; Vaculovičová, Markéta; Stiborová, Marie; Eckschlager, Tomáš; Kizek, René; Adam, Vojtěch (MDPI, 2013-06-27)
    Magnetic particle mediated transport in combination with nanomaterial based drug carrier has a great potential for targeted cancer therapy. In this study, doxorubicin encapsulation into the apoferritin and its conjugation ...
  • Biologically active compounds contained in grape pomace 

    Vojáčková, Klára; Mlček, Jiří; Škrovánková, Soňa; Adámková, Anna; Adámek, Martin; Orsavová, Jana; Bučková, Martina; Fic, Vlastimil; Kouřimská, Lenka; Búran, Martin (HACCP Consulting, 2020-09-28)
    A healthy lifestyle and gastronomic trends based on traditional and local foods accompanied by waste-free technologies are currently in the primary focus. One of the raw materials with properties in alignment with such ...
  • Charged Controlled Mem-Element Emulator and Its Application in a Chaotic System 

    Kumar Sharma, Pankaj; Kumar Ranjan, Rajeev; Khateb, Fabian; Kumngern, Montree (IEEE, 2020-10-19)
    This article proposes a charged controlled emulator model for memristor and memcapacitor using second-generation Current Conveyor (CCIIs) and Analog Multiplier (AM). The grounded and floating mem-element circuits have been ...
  • Chemical Sensor Platform for Non-Invasive Monitoring of Activity and Dehydration 

    Solovei, Dmitry; Žák, Jaromír; Majzlíková, Petra; Sedláček, Jiří; Hubálek, Jaromír (MDPI, 2015-01-14)
    A non-invasive solution for monitoring of the activity and dehydration of organisms is proposed in the work. For this purpose, a wireless standalone chemical sensor platform using two separate measurement techniques has ...
  • Chemical Separation on Silver Nanorods Surface Monitored by TOF-SIMS 

    Petruš, Ondrej; Oriňák, Andrej; Oriňáková, Renáta; Christian, Muhmann; Macko, Ján; Hrdý, Radim; Hubálek, Jaromír; Erdelei, Branislav; Arlinghaus, Heinrich F. (Hindawi, 2017-06-01)
    The article introduces a possible chemical separation of a mixture of two compounds on the metal nanorods surface. A silver nanorods surface has been prepared by controlled electrochemical deposition in anodic alumina oxide ...
  • The CMOS Highly Linear Current Amplifier with Current Controlled Gain for Sensor Measurement Applications 

    Prokop, Roman; Šotner, Roman; Kledrowetz, Vilém (MDPI, 2020-08-18)
    This paper introduces a new current-controlled current-amplifier suitable for precise measurement applications. This amplifier was developed with strong emphasis on linearity leading to low total harmonic distortion (THD) ...
  • A CMOS Multiplied Input Differential Difference Amplifier: A New Active Device and Its Applications 

    Šotner, Roman; Jeřábek, Jan; Prokop, Roman; Kledrowetz, Vilém; Polák, Josef (MDPI AG, 2017-01-26)
    This paper presents a newly developed active device, referred to as a multiplied input differential difference amplifier (MIDDA), which allows operations of summation/subtraction and multiplication of input signals. It was ...
  • Complexes of silver(I) ions and silver phosphate nanoparticles with hyaluronic acid and/or chitosan as promising antimicrobial agents for vascular grafts 

    Hegerová, Dagmar; Nejdl, Lukáš; Gumulec, Jaromír; Kryštofová, Olga; Merlos Rodrigo, Miguel Ángel; Kynický, Jindřich; Ruttkay-Nedecký, Branislav; Kopel, Pavel; Babula, Petr; Adam, Vojtěch; Kizek, René (MDPI, 2013-06-28)
    Polymers are currently widely used to replace a variety of natural materials with respect to their favourable physical and chemical properties, and due to their economic advantage. One of the most important branches of ...
  • 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 ...