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Generation of NPS for Exposure Experiments from Copper Acetylacetone.
Moravec, P. ; Schwarz, J. ; Vodička, P. ; Kupčík, Jaroslav ; Švehla, J.
Particles containing copper are emitted from smelters, iron foundries, power stations, and municipal incinerators (WHO, 1998) and also from brake linings during breaking, Kukutschová et al. (2011). Nanoparticles (NPs) of copper are ingredients in polymers, inks, and bioactive coatings inhibiting the growth of microorganisms, Cioffi at al. (2005), and CuO NPs has been used in antimicrobial textiles, Gabbay and Borkow (2006), therefore they can be easily inhaled. Even though CuO NPs were found highly toxic, Karlsson et al. (2008), in vivo studies of their toxicity are still rather rare. In this work we tested a method of long lasting nanoparticle generation from copper acetylacetonate (CuAA) for use in follow up exposure experiments with laboratory animals. The exposure chamber for inhalation experiments was constructed in the Institute of Analytical Chemistry AS CR (Večeřa et al., 2011) and some methods of NPs generation for these experiments were already tested in our laboratory (Moravec et al., 2015, Moravec et al., 2016).
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Generation of NPS for Exposure Experiments from Copper Acetylacetone.
Moravec, Pavel ; Schwarz, Jaroslav ; Vodička, Petr ; Kupčík, Jaroslav ; Švehla, Jaroslav
Particles containing copper are emitted from smelters, iron foundries, power stations, and municipal incinerators (WHO, 1998) and also from brake linings during breaking, Kukutschová et al. (2011). Nanoparticles (NPs) of copper are ingredients in polymers, inks, and bioactive coatings inhibiting the growth of microorganisms, Cioffi at al. (2005), and CuO NPs has been used in antimicrobial textiles, Gabbay and Borkow (2006), therefore they can be easily inhaled. Even though CuO NPs were found highly toxic, Karlsson et al. (2008), in vivo studies of their toxicity are still rather rare. In this work we tested a method of long lasting nanoparticle generation from copper\nacetylacetonate (CuAA) for use in follow up exposure experiments with laboratory animals. The exposure chamber for inhalation experiments was constructed in the\nInstitute of Analytical Chemistry AS CR (Večeřa et al., 2011) and some methods of NPs generation for these experiments were already tested in our laboratory (Moravec et al., 2015, Moravec et al., 2016).
Plný tet: SKMBT_C22016102412242 -  PDF
Plný text: content.csg - PDF
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Vícedimenzionální data v systému OLAP
Kupčík, Jaroslav ; Kužela, Alois (oponent) ; Hruška, Tomáš (vedoucí práce)
Práce se zabývá problematikou multidimenzionálních dat v systému OLAP, zejména jejich vizualizací na dvourozměrné obrazovce. Stručně je zde rozebrán způsob uložení dat v multidimenzionální databázi a formální popis struktury dat v hyperkrychli. Následuje velmi podrobná klasifikace grafů přihlížející zejména na jejich použitelnost pro vizualizaci multidimenzionálních dat a pro demonstraci při oficiálních prezentacích, kde hraje největší roli názornost. Poslední částí práce je popis etap vývoje rozhraní informačního systému pro vizualizaci multidimenzionálních dat.
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Uživatelsky příjemná animovaná komunikace se systémem OLAP
Kupčík, Jaroslav ; Šuška, Boris (oponent) ; Hruška, Tomáš (vedoucí práce)
Komplikovanost modelů vícedimenzionálních dat a práce s nimi nikterak nezlepšuje kvalitu uživatelské přívětivosti aplikace s nimi pracující. Jednou z možností jak vyřešit zmírnění negativního vlivu této skutečnosti na laického uživatele je použití vizualizačních technik pro vylepšení uživatelského rozhraní systému. V současnosti existují mocné nástroje využitelné pro efektivní manipulaci původně statického dokumentu na straně klienta. Jejich využitím lze obohatit rozhraní systému interaktivní nápovědou. Použitelnost takto definovaného modulu musí odpovídat podmínkám maximální přenositelnosti. Důležitým aspektem je rovněž rozsah a provedení konfigurovatelnosti výsledku praktické části práce.
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Long Lasting ZnO Nanoparticle Synthesis for Potential Use in Inhalation Experiments
Moravec, Pavel ; Kupčík, Jaroslav
In this work we tested the long term generation of ZnO-NPs for potential use in exposure experiments with laboratory animals. These experiments require the generation of NPs in the gas phase with appropriate number concentration (Nt>1 107 #/cm3) and geometric mean diameter (GMD<50 nm) in duration of several weeks. Several methods of gas phase ZnO-NPs synthesis using metalorganic precursors, such as zinc acetylacetonate, zinc tetramethylheptane dionate or diethylzinc were reported in the literature. However, NPs prepared from metalorganic precursor are usually more or less contaminated by elemental (EC) or organic (OC) carbon. Therefore we used metallic zinc as a precursor in this study.
Plný tet: SKMBT_C22015102910283 - PDF
Plný text: content.csg - PDF
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Excimer Laser-Induced CVD of Carbon Encapsulated Cobalt Nanoparticles
Fajgar, Radek ; Maryško, Miroslav ; Dřínek, Vladislav ; Kupčík, Jaroslav ; Šubrt, Jan
Decomposition of acetylene / Co(CO)(3)(NO)mixtures induced by excimer ArF laser pulses is an efficient technique for preparation of amorphous cobalt nanoparticles encapsulated in carbon. Vacuum heating up to 900 degrees C leads to crystallization the metal core. The cobalt core crystallizes in a face-centered cubic (beta) form as revealed by X-ray and electron diffraction techniques and carbon affords graphite outer part. Properties of the Co(core) - carbon(shell)nanocomposites were examined by spectroscopy and microscopy techniques. Magnetization studies revealed paramagnetic behavior of the as-prepared amorphous deposit and superparamagnetic behavior of the annealed samples.
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Characterization and Properties of Titanium-Vanadium Oxide Thin Films Prepared by ArF Laser Ablation
Fajgar, Radek ; Kupčík, Jaroslav ; Šubrt, Jan ; Novotný, F.
Thin films od vanadium-titanium complex oxides were prepared by ArF excimer laser ablation of Tio2 and VO2 targets. The light grey films with thickness of 155 nm were grown on glass and Au substrates and characterized by microscopy, spectroscopy and diffraction techniques. The as-prepared films were nanocrystalline and heating at 450°C in vacuum led to formation of mixture of crystalline V0.95Ti0.05O and TiO nanoparticles. The film shown reversible thermochronic behaviour between 3.0 and 1.4 micrometers. The films, annealed in air oxidize and the colour of the film changes to light yellow. Electrical and optical properties of the films are demonstrated.
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