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Use of photoautotrophic microorganisms in bioremediation of surface waters
Mušálková, Petra
2023 - anglický
Extensive experimental work has been executed to examine suitability of the proposed approach. Throughout the experiments, phosphorus concentration in the media was measured spectrophotometrically, to confirm the amount of phosphorus uptake,\nthe intracellular phosphorus concentration was analyzed by ICP-OES spectrophotometry.\n
Klíčová slova:
photoautotrophic microorganisms; surface water; phosphorus; bioremediation
Plné texty jsou dostupné v digitálním repozitáři NUŠL
Use of photoautotrophic microorganisms in bioremediation of surface waters
Extensive experimental work has been executed to examine suitability of the proposed approach. Throughout the experiments, phosphorus concentration in the media was measured spectrophotometrically, to ...
Investigation of recycling possibilities of discarded photovoltaic solar panels
Šperlich, Antonín
2023 - anglický
This work aims to find an economically effective and industrially feasible method of how to recycle discarded photovoltaic solar panels. Performed experiments determined the exact composition of photovoltaic solar panels and the advantages and disadvantages of the treatment mentioned in the literature. Results will be used for a full-scale industrial unit design for solar photovoltaic panels recycling.\n
Klíčová slova:
photovoltaic solar panels; recycling; experiments
Plné texty jsou dostupné v digitálním repozitáři NUŠL
Investigation of recycling possibilities of discarded photovoltaic solar panels
This work aims to find an economically effective and industrially feasible method of how to recycle discarded photovoltaic solar panels. Performed experiments determined the exact composition of ...
The effect of meteorology and aerosol size distribution on light scattering properties at a rural background site in Central Europe
Suchánková, Lenka
2023 - anglický
The aim of this study is to characterize the light scattering properties of aerosols at the rural background site National Atmospheric\nObservatory Košetice (NAOK; 49°34’20.787”N, 15°4’48.155”E) in Central Europe, namely the coefficients of total light scattering (σsp) and backscattering (σbsp), the Ångström exponent (SAE), the backscattering ratio (b), and the asymmetry factor (g), with special attention to the influence of meteorology and aerosol size distribution on these properties. We measured σ𝑠𝑝 and σ𝑏𝑠𝑝 at three wavelengths (450, 550, and 700 nm) using the Integrating Nephelometer TSI 3563 (PM10 inlet). The measurements were performed from August 16, 2012 to December 31, 2019.
Klíčová slova:
properties aerosols; backscattering; measurements
Plné texty jsou dostupné v digitálním repozitáři NUŠL
The effect of meteorology and aerosol size distribution on light scattering properties at a rural background site in Central Europe
The aim of this study is to characterize the light scattering properties of aerosols at the rural background site National Atmospheric\nObservatory Košetice (NAOK; 49°34’20.787”N, 15°4’48.155”E) in ...
N-alkylation of a lysergic acid derivative under PTC conditions in a continuous arrangement using sonication
Jaklová, Natalie
2023 - anglický
This contribution focuses on the application of sonication to the synthesis of a methyl ester of the 1-methyl-10α-methoxydihydrolysergic acid (MeLUME).
Klíčová slova:
sonication; synthesis; methyl ester
Plné texty jsou dostupné v digitálním repozitáři NUŠL
N-alkylation of a lysergic acid derivative under PTC conditions in a continuous arrangement using sonication
This contribution focuses on the application of sonication to the synthesis of a methyl ester of the 1-methyl-10α-methoxydihydrolysergic acid (MeLUME).
PROCESSING OF THE DATA MEASURED WITH CLOUD CONDENSATION NUCLEI COUNTER IN YEAR 2020 FOR SUBMISSION TO EBAS DATABASE
Moravec, Pavel; Jindra, Tomáš; Wagner, Zdeněk; Ždímal, Vladimír
2023 - anglický
Aerosol particles in the atmosphere that allow water vapor to condense and form cloud droplets are called Cloud Condensation Nuclei (CCN). Elevated concentrations of CCN tend to increase the concentration and decrease the size of cloud droplets. This can lead to suppression of precipitation in shallow and short-lived clouds and to greater convective overturning and more precipitation in deep convective clouds, Rose et al.(2010). The response of cloud properties and precipitation processes to increasing anthropogenic aerosol concentrations represents one of the largest uncertainties in the current understanding of climate change. One of the fundamental challenges is to determine the ability of aerosol particles to act as CCN under relevant atmospheric conditions. Knowledge of the spatial and temporal distribution in the atmosphere is essential to incorporate the effects of CCN into meteorological models of all scales, Huang et al. (2007). Long-term CCN measurements are performed at aerosol monitoring sites such as those forming ACTRIS (Aerosols, Clouds, and Trace Gases Research Infrastructure) network. Measured data are then submitted to the EBAS database, where they are available for the other ACTRIS researchers. In this paper, we present our experience with the processing of the data measured with CCNC for submission to the EBAS database. The data prepared for submission to EBAS from year 2020 are also presented.
Klíčová slova:
atmospheric aerosols; CCNC; cloud condensation nuclei concentrations
Plné texty jsou dostupné v digitálním repozitáři NUŠL
PROCESSING OF THE DATA MEASURED WITH CLOUD CONDENSATION NUCLEI COUNTER IN YEAR 2020 FOR SUBMISSION TO EBAS DATABASE
Aerosol particles in the atmosphere that allow water vapor to condense and form cloud droplets are called Cloud Condensation Nuclei (CCN). Elevated concentrations of CCN tend to increase the ...
DRONE-BASED VERTICAL MEASUREMENTS OF BLACK CARBON AEROSOLS AT A RURAL BACKGROUND AND AN URBAN SITE
Julaha, Kajal; Zíková, Naděžda; Ždímal, Vladimír
2023 - anglický
Black Carbon (BC) aerosols are primary particles emitted into the atmosphere as a by-product of incomplete combustion processes. BC absorbs solar radiation and altersthe radiation budget of the Earth(Bond et al., 2013). The radiative properties of BC heavily depend on its vertical profiles(Haywood and Ramaswamy, 1998). For example, BC in the free troposphere can enhance its radiative forcing by trapping energy emitted from lower cloud layers. \nThe modeling-based studies on BC vertical distribution are particularly poor (Chen et al., 2022), creating a need to measure the vertical distribution of BC on a regional scale,from areas characterized by anthropogenic emissions from the ground to those characterized by long-range transport(Ramana et al., 2010). Among all the other methods, drones have recently gained popularity because of their high-cost efficiency, flexibility, and mobility. Besides comparing BC aerosol vertical distribution at an urban and a regional background site, this study also calibrates drone measurements using a 230-meter tower.
Klíčová slova:
vertical profile; drone; rural background
Plné texty jsou dostupné v digitálním repozitáři NUŠL
DRONE-BASED VERTICAL MEASUREMENTS OF BLACK CARBON AEROSOLS AT A RURAL BACKGROUND AND AN URBAN SITE
Black Carbon (BC) aerosols are primary particles emitted into the atmosphere as a by-product of incomplete combustion processes. BC absorbs solar radiation and altersthe radiation budget of the ...
Ambient organic aerosol origin at rural background site in the Czech Republic
Lhotka, Radek
2023 - anglický
Atmospheric aerosols (AA) are ubiquitous particles in the atmosphere that influence the Earth’s climatic system, environmental interactions, and human health. Among AA, great interest is dedicated to organic aerosols (OA) since it can represent from 20 to 90% of total submicron mass. Source apportionment of OA at background sites is one of the important tasks of current air quality protection.
Klíčová slova:
organic aerosol; air quality protection; ural background site
Plné texty jsou dostupné v digitálním repozitáři NUŠL
Ambient organic aerosol origin at rural background site in the Czech Republic
Atmospheric aerosols (AA) are ubiquitous particles in the atmosphere that influence the Earth’s climatic system, environmental interactions, and human health. Among AA, great interest is dedicated to ...
How can we best eliminate pharmaceuticals from wastewater?
Bourassi, Mahdi
2023 - anglický
Persistent pharmaceutical occurrence in different lakes and rivers usually originates from live stocks, agriculture, aquaculture, households, and hospitals. The presence of these compounds in the ecosystems leads to fatal consequences. Pharmaceuticals can threaten microorganisms in the environment, either causing its deterioration or allowing pathogens to gain resistance against antibiotics and medical treatments. These occurrences in the environment questions the ability of conventional treatment to remediate pharmaceutical wastewater.
Klíčová slova:
wastewater; pharmaceuticals; membrane separation
Plné texty jsou dostupné v digitálním repozitáři NUŠL
How can we best eliminate pharmaceuticals from wastewater?
Persistent pharmaceutical occurrence in different lakes and rivers usually originates from live stocks, agriculture, aquaculture, households, and hospitals. The presence of these compounds in the ...
Synthesis and cytotoxicity of fluorinated mannosamines
Krčil, Aleš
2023 - anglický
The aim of the project is to synthesise mono-, di- and trifluoroanalogs of N-acetylmannosamines. The cytotoxicity of the final products towards selected cancer cells will be determined. The key intermediates are the corresponding multiply fluorinated mannosazidethioglycosides prepared from deoxyfluorinated 1,6-anhydro-2-azidoβ-D-hexopyranose precursors by ring-opening reactions with phenyltrimethylsilyl sulfide.
Klíčová slova:
synthesis; cytotoxicity; fluorinated mannosamines
Plné texty jsou dostupné v digitálním repozitáři NUŠL
Synthesis and cytotoxicity of fluorinated mannosamines
The aim of the project is to synthesise mono-, di- and trifluoroanalogs of N-acetylmannosamines. The cytotoxicity of the final products towards selected cancer cells will be determined. The key ...
Chiral anion exchanger based on α-methylbenzylamine for enantioselective separation of racemic acids
Čížek, Jan
2023 - anglický
In this work, new enantioselective material based on α-methylbenzylamine as the chiral selector (recently utilized by our group in the preparation of chiral\nmembranes) covalently attached to Merrifield resin beads is proposed and discussed as a potentially cost-effective alternative to typically expensive stationary phase materials. It is shown that charged chiral methylbenzylamine works as an enantioselective anion exchanger potentially suitable for the separation of chiral acids, such as N–protected amino acid, or non-steroidal anti-inflammatory drugs (NSAID), such as ibuprofen. In a glass column chromatography experiment, racemic N–(tert–butoxycarbonyl) tryptophan was partially separated, reaching enantiomeric excess in eluates of around 10%.\n
Klíčová slova:
chiral membranes; separation; racemic acids
Plné texty jsou dostupné v digitálním repozitáři NUŠL
Chiral anion exchanger based on α-methylbenzylamine for enantioselective separation of racemic acids
In this work, new enantioselective material based on α-methylbenzylamine as the chiral selector (recently utilized by our group in the preparation of chiral\nmembranes) covalently attached to ...
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