Yes (921)
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921
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Determination of cadmium by chemical vapour generation coupled with atomic fluorescence spectrometry
Štádlerová, Barbora; Sagapova, Linda; Musil, Stanislav
2022 - English
Development of a methodology for determination of cadmium based on chemical vapour generation coupled with atomic fluorescence spectrometry.
Keywords:
atomic fluorescence spectrometry; cadmium; chemical vapour generation
Available in digital repository of the ASCR
Determination of cadmium by chemical vapour generation coupled with atomic fluorescence spectrometry
Development of a methodology for determination of cadmium based on chemical vapour generation coupled with atomic fluorescence spectrometry.
Personal exposure measurement during dental nanocomposite grinding
Ždímal, Vladimír; Ondráčková, Lucie; Ondráček, Jakub; Schwarz, Jaroslav; Bradna, P.; Roubíčková, A.; Pelclová, D.; Rössnerová, Andrea
2022 - English
The purpose of this study was to measure the personal exposure of each participant of the study and to compare the results with those of static monitoring. Personal nanoparticle sam-plers (PENS), which can simultaneously detect both nanoparticles (PM0.1) and respirable parti-cles (PMA), were used to determine personal exposure (Tsai et al., 2012). Area monitoring in-cluded measurement of mass concentrations using the Berner Low Pressure Impactor (BLPI 25/0.018 /2, Hauke GmbH, Gmunden, Austria) and the Low Volume Sampler (LV5, Sven Leckel Ingenieurbüro GmbH, Germany). The number concentrations and their size distributions were measured with the Scanning Mobility Particle Sizer (5MP5 3936, T5I Inc., USA) and the Aerody-namic Particle Sizer (APS 3321, TSI Inc., USA). Measurements with all of the above- mentioned instruments were performed in four shifts with six participants per shift. Each participant milled for 10 minutes and then remained in the room until the group finished the session, so the total exposure lasted about 70 minutes. Due to the high content of filler nanoparticles, the nanocom-posite Filtek Ultimate (body A2, 3M ESPE, USA) was selected for these measurements.
Keywords:
dental treatment; personal exposure; nanocomposites
Available in a digital repository NRGL
Personal exposure measurement during dental nanocomposite grinding
The purpose of this study was to measure the personal exposure of each participant of the study and to compare the results with those of static monitoring. Personal nanoparticle sam-plers (PENS), ...
Multiplication of urea sites—impact on binding phosphates
Salvadori, Karolína
2022 - English
In our work, we focused on the synthesis of sensory groups based on urea structural motifs, suitable for binding phosphates. These units were tested for their selectivity and binding efficiency in HB competitive solvent (DMSO).\n
Keywords:
urea; phosphates; concentrations
Available in a digital repository NRGL
Multiplication of urea sites—impact on binding phosphates
In our work, we focused on the synthesis of sensory groups based on urea structural motifs, suitable for binding phosphates. These units were tested for their selectivity and binding efficiency in HB ...
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 ...
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
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 ...
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 ...
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 ...
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 ...
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 ...
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