A seven-years based characterization of aerosol light scattering properties at Central European rural site: Variability and source apportionment
Suchánková, Lenka
2022 - English In addition, the sources of scattering aerosols, chemical composition, meteorological conditions, particle size distribution, and radiative forcing will be further investigated at NAOK to better understand the direct effects of aerosols on local climate. Keywords: organic aerosol; measurements; aerosol light scattering properties Available in a digital repository NRGL A seven-years based characterization of aerosol light scattering properties at Central European rural site: Variability and source apportionment

In addition, the sources of scattering aerosols, chemical composition, meteorological conditions, particle size distribution, and radiative forcing will be further investigated at NAOK to better ...

Suchánková, Lenka
Ústav chemických procesů, 2022

Use of photoautotrophic microorganisms in bioremediation of surface waters
Mušálková, Petra
2022 - English The aim of my thesis is to develop an alternative method of removing this overplus of nutrients from surface waterbodies in a biological way, withthe use of microalgae and cyanobacteria. \n Keywords: microalgae; cyanobacteria; water eutrophication Available in a digital repository NRGL Use of photoautotrophic microorganisms in bioremediation of surface waters

The aim of my thesis is to develop an alternative method of removing this overplus of nutrients from surface waterbodies in a biological way, withthe use of microalgae and cyanobacteria. \n

Mušálková, Petra
Ústav chemických procesů, 2022

Experimental study of bubble dynamics in aqueous solutions of simple alcohols: CFD validation data
Crha, Jakub
2022 - English The aim of this work was to obtain experimental values of terminal velocities and shape deformations for a wide range of bubble sizes and compare them with theoretically calculated values. These data were obtained for the whole concentration range of aqueous solutions of 1-propanol and ethanol and will be used for validation of CFD results in\nfuture work.\n Keywords: bubble dynamics; water-alcohol mictures; viscosity Available in a digital repository NRGL Experimental study of bubble dynamics in aqueous solutions of simple alcohols: CFD validation data

The aim of this work was to obtain experimental values of terminal velocities and shape deformations for a wide range of bubble sizes and compare them with theoretically calculated values. These data ...

Crha, Jakub
Ústav chemických procesů, 2022

NMR-based metabolomic analysis of blood plasma as a pancreatic cancer diagnostic tool
Michálková, Lenka
2022 - English In this work, 1H NMR metabolomic analysis of blood plasma was used as an alternative diagnostic tool of PC. The concentration profile of 58 metabolites was used to discriminate PC patients from long-term T2DM patients and healthy controls. Based on successful discrimination, a specific biomarker panel of eight metabolites was proposed. Keywords: pancreatic cancer; diagnostic tool; NMR-based metabolomic analysis Available in a digital repository NRGL NMR-based metabolomic analysis of blood plasma as a pancreatic cancer diagnostic tool

In this work, 1H NMR metabolomic analysis of blood plasma was used as an alternative diagnostic tool of PC. The concentration profile of 58 metabolites was used to discriminate PC patients from ...

Michálková, Lenka
Ústav chemických procesů, 2022

Chemické složení a zdroje atmosférických aerosolů na pozaďové stanici Frýdlant
Lhotka, Radek; Pokorná, Petra; Vodička, Petr; Zíková, Naděžda; Ondráček, Jakub; Arora, S.; Poulain, L.; Hermann, H.; Schwarz, Jaroslav; Ždímal, Vladimír
2022 - English This study assesses the variability of organic aerosol (OA) sources monitored at the rural background site Frýdlant. Non-refractory PM1 was evaluated in two seasons of\n2021. The positive matrix factorization with the multi-linear engine was used to determine the sources of OA at Frýdlant site, with four factors resolved both in winter and\nsummer. Keywords: organic aerosols; positive matrix factorization with multi-linear engine; non-refractive aerosol Available in a digital repository NRGL Chemické složení a zdroje atmosférických aerosolů na pozaďové stanici Frýdlant

This study assesses the variability of organic aerosol (OA) sources monitored at the rural background site Frýdlant. Non-refractory PM1 was evaluated in two seasons of\n2021. The positive matrix ...

Lhotka, Radek; Pokorná, Petra; Vodička, Petr; Zíková, Naděžda; Ondráček, Jakub; Arora, S.; Poulain, L.; Hermann, H.; Schwarz, Jaroslav; Ždímal, Vladimír
Ústav chemických procesů, 2022

Planetary Boundari Layer Effect on Vertical Transport of Black Carbon Concentration under Different Meteorological Conditions
Julaha, Kajal; Zíková, Naděžda; Mbengue, Saliou; Ždímal, Vladimír
2022 - English In the present study, we analyzed the impact of equivalent black carbon (eBC) aerosols at two different heights (4 m and 230 m) on the PBL height under different \nmetrological conditions such as clear sky, foggy (visibility ≤ 1km), and hazy days (visibility ≤ 8km during the non-fog day), high relative humidity, temperature, and \nobservational data, also, diurnal and seasonal variability was evaluated. Keywords: PBL -eBC interaction; 250m-meteorological tower; meteorology Available in a digital repository NRGL Planetary Boundari Layer Effect on Vertical Transport of Black Carbon Concentration under Different Meteorological Conditions

In the present study, we analyzed the impact of equivalent black carbon (eBC) aerosols at two different heights (4 m and 230 m) on the PBL height under different \nmetrological conditions such as ...

Julaha, Kajal; Zíková, Naděžda; Mbengue, Saliou; Ždímal, Vladimír
Ústav chemických procesů, 2022

The impact of covid-19 restrictions on carbonaceous aerosols at rural background site: importance of vertical distribution
Mbengue, Saliou; Vodička, Petr; Komínková, Kateřina; Schwarz, Jaroslav; Zíková, Naděžda; Prokeš, Roman; Suchánková, Lenka; Julaha, Kajal; Ondráček, Jakub; Holoubek, Ivan; Ždímal, Vladimír
2022 - English In this study, EC and OC at 4 m elevation and EC at 230 m elevation showed a similar \nseasonal pattern with higher values in winter and lower values in summer. OC, measured \nat 230 m height showed an opposite behavior with slightly higher values in spring and \nsummer, probably related to the increased contribution of secondary organic carbon \n(SOC). Concentrations were generally higher at 4 m, where there was also a better \ncorrelation between EC and OC, suggesting a greater influence of local sources near the \nsurface. Keywords: COVID-19; Vertical distribution; Organic – elemental carbon; Rural background site Available in a digital repository NRGL The impact of covid-19 restrictions on carbonaceous aerosols at rural background site: importance of vertical distribution

In this study, EC and OC at 4 m elevation and EC at 230 m elevation showed a similar \nseasonal pattern with higher values in winter and lower values in summer. OC, measured \nat 230 m height showed ...

Mbengue, Saliou; Vodička, Petr; Komínková, Kateřina; Schwarz, Jaroslav; Zíková, Naděžda; Prokeš, Roman; Suchánková, Lenka; Julaha, Kajal; Ondráček, Jakub; Holoubek, Ivan; Ždímal, Vladimír
Ústav výzkumu globální změny , 2022

Change in Size-Resolved Filtration Efficiency of Respirators after Decontamination/Disinfection Treatments
Ondráček, Jakub; Ondráčková, Lucie; Dřevínek, M.; Otáhal, P.; Vošáhlík, J.
2022 - English Furthermore, during COVID pandemic many people were using the PPEs for longer time than it was suggested by the manufacturer or tried to use home-made or web \ncommunity recommended decontamination/disinfection/antiviral treatments. Such treatments may severely destroy the structure of the filtration material and alter the \nfiltration properties as compared to the original piece of the PPE and thus not protect the wearer properly against harmful particles. This work aims to estimate the change in the \nsize-resolved filtration efficiency of different respirators after application of selected decontamination/disinfection treatments. Keywords: respirators; size-resolved FE; decontamination Available in a digital repository NRGL Change in Size-Resolved Filtration Efficiency of Respirators after Decontamination/Disinfection Treatments

Furthermore, during COVID pandemic many people were using the PPEs for longer time than it was suggested by the manufacturer or tried to use home-made or web \ncommunity recommended ...

Ondráček, Jakub; Ondráčková, Lucie; Dřevínek, M.; Otáhal, P.; Vošáhlík, J.
Ústav chemických procesů, 2022

Analýza materiálových toků textilních odpadů v České Republice
Shtukaturova, Anastasia
2022 - English Objemy textilních odpadů se v posledních desetiletích neustále zvyšují kvůli nadměrné spotřebě textilních výrobků v souvislosti s nízkonákladovou rychlou módou, rostoucí populací a vyšší životní úrovní obyvatelstva. Jak samotný textilní průmysl, tak i textilní odpady přispívají ke znečišťování životního prostředí a produkci skleníkových a odpadních plynů. V roce 2020 EU přijala nový Akční plán pro oběhové hospodářství, zásady kterého musí být implementovány do legislativy každého členského státu. Hlavními cílí Akčního plánu jsou šetrnější a efektivnější zužitkování zdrojů a maximalizace recyklace všech druhů využitelných odpadů, včetně textilních. Proto se v České Republice v roce 2021 vstoupil v platnost nový odpadový zákon vycházející ze zásad Akčního plánu. Nový zákon o nakládání s odpady určuje důležité změny pro nakládání s textilními odpady v zemi. Pro zjištění současného stavu s textilními odpady byla vytvořena analýza materiálových toků. Výsledky ukázaly, že produkce průmyslových textilních odpadů byla 70 405 tun v roce 2010 a 87 840 tun v roce 2019, takže u tohoto druhu textilního odpadu tedy nedošlo k velkému nárůstu. Produkce textilních odpadů z domácností byla 37 393 tun v roce 2019 a je téměř desetkrát vyšší ve srovnání s rokem 2010. Navíc provedené analýzy vzorků směsného komunálního odpadu (SKO) ukázaly, že SKO obsahuje kolem 7 % různých druhů použitých textilií, které mohou být vhodné k recyklaci. Získané výsledky potvrzují, že Česká republika zatím není dostatečně připravena na plnění cílů Akčního plánu v případě textilních odpadů, a to kvůli jeho neustále rostoucím objemům a chybějícím recyklačním technologiím\n Volumes of textile waste have been continuously increasing over last few decades because of the overconsumption of textile products linked to low-cost fast fashion, growing population and higher living standards. Both textile industry and waste generation contribute to environmental pollution and production of greenhouse and waste gases. In 2020, the EU adopted the new Circular Economy Action Plan (CEAP) for the transition to the circular economy where the waste considers to be a valuable resource. Principles of the CEAP need to be implemented into the legislation of each Member state. In the Czech Republic, a new waste treatment law based on the CEAP was adopted in 2021. The new waste treatment law determines important changes for the textile waste treatment in the country. To prepare the Czech Republic for these significant changes, a material flow analysis (MFA) was created to determine the current state with textile waste streams. The results showed that the production of industrial textile waste was 70 405 tons in the year 2010 and 87 840 tons in the year 2019, so there is no big increase for this type of textile waste. The production of textile waste from households was 37 393 tons in the year 2019 and it is almost ten times higher in a comparison with the year 2010. Moreover, the analysis of municipal solid waste (MSW) samples showed that they contained about 7% of different types of used textiles which may be suitable for recycling. Obtained results confirm that the Czech Republic is not enough prepared for meeting the objectives of the CEAP in a case of textile waste because of its constantly growing volumes and lack of recycling technologies.\n\n Keywords: textile waste streams; analysis; new waste treatment law Available in a digital repository NRGL Analýza materiálových toků textilních odpadů v České Republice

Objemy textilních odpadů se v posledních desetiletích neustále zvyšují kvůli nadměrné spotřebě textilních výrobků v souvislosti s nízkonákladovou rychlou módou, rostoucí populací a vyšší životní ...

Shtukaturova, Anastasia
Ústav chemických procesů, 2022

Interaction of triazole fungicides in agriculture
Kovač, Ishak; Jakl, M.; Šolínová, Veronika; Kašička, Václav; Jaklová Dytrtová, Jana
2022 - English Keywords: capillary electrokinetic chromatography; triazole fungicides; quantitative analysis Available at various institutes of the ASCR Interaction of triazole fungicides in agriculture

Kovač, Ishak; Jakl, M.; Šolínová, Veronika; Kašička, Václav; Jaklová Dytrtová, Jana
Ústav organické chemie a biochemie, 2022