Spectroelectrochemical Devices for Monitoring of Intermediates and Products on Carbonbased Composite Electrodes
Vaněčková, Eva; Šikula, M.; Hrdlička, Vojtěch; Sebechlebská, Táňa; Kolivoška, Viliam
2024 - English
Spectroelectrochemistry (SEC), as an interdisciplinary field, provides us with more comprehensive information about electroactive molecules involved in charge transfer reactions. Commercially\navailable SEC cells most often have an incorporated platinum working electrode, which can limit the range of the usable potential window and, in addition, can complicate the analysis due to the\nabsorption phenomenon. In this work, we designed and manufactured two types of custom-made SEC cells employing optically transparent carbon-based working electrodes for UV-Vis monitoring of reactants and electrogenerated intermediates and products. The first SEC cell is entirely manufactured by 3D printing using fused deposition modeling (FDM) by combining optically transparent (PET) and electrically conductive (PLA-CB) filaments. The second SEC cell employs pencil graphite (PG) rods as the working electrode (PGE) and its body is manually assembled from quartz slides. The functionality of the FDM 3D printed SEC cell and manually assembled quartz SEC cell were verified by cyclic voltammetry with in situ UV-Vis spectroscopic absorption monitoring of ruthenium(III) acetylacetonate (Ru(ac)3) redox-active probe dissolved in an aqueous or non-aqueous deaerated solvent, respectively. Both presented cells enable complete redox reversible conversion and strictly oxygen-free conditions.
Keywords:
pencil graphite electrode; spectroelectrochemistry; 3D printed electrode
Available on request at various institutes of the ASCR
Spectroelectrochemical Devices for Monitoring of Intermediates and Products on Carbonbased Composite Electrodes
Spectroelectrochemistry (SEC), as an interdisciplinary field, provides us with more comprehensive information about electroactive molecules involved in charge transfer reactions. ...
Verification of the dynamic properties of a new model turbine wheel with free blades
Voronova, Evgeniya; Procházka, Pavel; Maturkanič, Dušan; Mekhalfia, Mohammed Lamine; Hodboď, Robert
2024 - English
The paper describes a new experimental model of turbine wheel with free blades. Verification tests were carried out using a Doppler laser vibrometer, with a focus on the equipment parameters under various conditions. The measurements were performed in the Laboratory of Rotational Laser Vibrometry originated at the Institute of Thermomechanics AS CR, v.v.i.
Keywords:
natural frequencies; vibration; blade; laser; turbine
Available at various institutes of the ASCR
Verification of the dynamic properties of a new model turbine wheel with free blades
The paper describes a new experimental model of turbine wheel with free blades. Verification tests were carried out using a Doppler laser vibrometer, with a focus on the equipment parameters under ...
Česká putování za Richardem Wagnerem
Fránek, Michal; Kopecký, J.
2024 - Czech
Studie zkoumá fenomén českých cest za slavným německým skladatelem Richardem Wagnerem a do míst spojených s jeho kultem (Mnichov, Bayreuth, Curych atd.). Zaměřuje se na wagnerovské cesty – uskutečněné i neuskutečněné – českých skladatelů (Bedřich Smetana, Antonín Dvořák, Zdeněk Fibich, Josef Bohuslav Foerster), interpretů (Ema Destinnová, Karel Burian aj.), hudebních kritiků (Otakar Hostinský, V. V. Zelený), malířů (Jaroslav Čermák) a spisovatelů (Julius Zeyer, Jaroslav Maria, Teréza Nováková), přičemž sleduje jejich různé motivace. The study explores the phenomenon of Czech travels to famous German composer Richard Wagner and to the places associated with his cult (Munich, Bayreuth, Zurich, etc.). It focuses on the Wagnerian journeys – accomplished and not – of Czech composers (Bedřich Smetana, Antonín Dvořák, Zdeněk Fibich, Josef Bohuslav Foerster), performers (Ema Destinnová, Karel Burian, etc.), music critics (Otakar Hostinský, V. V. Zelený), painters (Jaroslav Čermák) and writers (Julius Zeyer, Jaroslav Maria, Teréza Nováková), tracing their different motivations.
Keywords:
Richard Wagner; travelling to artists
Available at various institutes of the ASCR
Česká putování za Richardem Wagnerem
Studie zkoumá fenomén českých cest za slavným německým skladatelem Richardem Wagnerem a do míst spojených s jeho kultem (Mnichov, Bayreuth, Curych atd.). Zaměřuje se na wagnerovské cesty – uskutečněné ...
Production of climbing holds and their testing
2024 -
Keywords:
lezectví; lezecké chyty; výroba lezeckých chytů; výrobci lezeckých chytů v ČR; polyesterová pryskyřice; polyuretanová pryskyřice; beton; sádra
Available in the ZČU Library.
Production of climbing holds and their testing
Microcontrollers in education
2024 -
Keywords:
mikrokontrolér; Arduino; MicroBit; programování; projektová výuka; mezipředmětové vztahy
Available in the ZČU Library.
Microcontrollers in education
Civil protection in primary school education
2024 -
Keywords:
civilní ochrana; vzdělávání žáků; hrozby a rizika; integrace civilní ochrany
Available in the ZČU Library.
Civil protection in primary school education
Education of students in the field of interdisciplinary education using MICRO:BIT microcontrollers
2024 -
Keywords:
interdisciplinární vzděláváni; mikrokontrolér; programování; africký slimák
Available in the ZČU Library.
Education of students in the field of interdisciplinary education using MICRO:BIT microcontrollers
Creative sewing as teacher support in early childhood and pre-school educatio - enchanted windows
2024 -
Keywords:
kostka; šátek; houba
Available in the ZČU Library.
Creative sewing as teacher support in early childhood and pre-school educatio - enchanted windows
Topics for work activities connecting man and the world of work with digital technologies and their verification in practice with children in the 1st grade of elementary school
2024 -
Keywords:
Člověk a svět práce; digitální technologie; pracovní činnosti
Available in the ZČU Library.
Topics for work activities connecting man and the world of work with digital technologies and their verification in practice with children in the 1st grade of elementary school
Nauczajmy, a little about the project from students for students
2024 -
Keywords:
projekt "UČ!"; formativní hodnocení; aktivační metody; výukové hry; pozitivní disciplína
Available in the ZČU Library.
Nauczajmy, a little about the project from students for students
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