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Yes (43)
Number of found documents:
211
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Deposition ozone flux over a Norway spruce forest and correlation with
Zapletal, M.; Cudlín, Pavel; Chroust, P.; Urban, Otmar; Pokorný, Radek; Edwards-Jonášová, Magda; Czerný, Radek; Janouš, Dalibor; Taufarová, Klára; Medlen, A.; Večeřa, Zbyněk; Mikuška, Pavel; Skácel, F.
2011 - Czech
Measured and modelled results of ozone deposition and stomatal flux to a Norway spruce forest in locality Bílý Kříž in July and August 2008 were compared. Enhanced concentration of ozone decreased net ecosystem production, especially at higher temperatures and high intensity of global radiation. Srovnání výsledků měření a modelování depozičního a stomatálního toku ozonu u smrku ztepilého v lokalitě Bílý Kříž v červenci a srpnu 2008. Zvýšené koncentrace ozonu snižují čistou ekosystémovou produkci, zvláště při vyšších teplotách a vysoké intenzitě globálního záření.
Keywords:
ozone deposition flux; ozone stomatal flux; net ecosystem production
Available at various institutes of the ASCR
Deposition ozone flux over a Norway spruce forest and correlation with
Measured and modelled results of ozone deposition and stomatal flux to a Norway spruce forest in locality Bílý Kříž in July and August 2008 were compared. Enhanced concentration of ozone decreased net ...
Concentrations of monosaccharide anhydrides in PM1 and PM2.5 aerosol
Mikuška, Pavel; Křůmal, Kamil; Vojtěšek, Martin; Večeřa, Zbyněk
2011 - Czech
Analysis of monosacharide anhydrides (levoglucosan, mannosan, galactosan) in two aerosol size fractions (PM1 and PM2.5) and comparison of concentrations during winter and summer campaigns in Brno and Šlapanice in 2009, identification of main emission sources. Analýza anhydridů monosacharidů (levoglukosan, mannosan, galaktosan) ve dvou velikostních frakcích aerosolu (PM1 a PM2.5) a porovnání koncentrací v průběhu zimní a letní kampaně v Brně a Šlapanicích v roce 2009, identifikace hlavních emisních zdrojů.
Keywords:
monosacharide anhydrides; organic tracer; biomass burning
Available at various institutes of the ASCR
Concentrations of monosaccharide anhydrides in PM1 and PM2.5 aerosol
Analysis of monosacharide anhydrides (levoglucosan, mannosan, galactosan) in two aerosol size fractions (PM1 and PM2.5) and comparison of concentrations during winter and summer campaigns in Brno and ...
Determination of organic compounds in PM1 in Brno and Šlapanice
Křůmal, Kamil; Mikuška, Pavel; Vojtěšek, Martin; Večeřa, Zbyněk
2011 - Czech
Monosaccharide anhydrides, polyaromatic hydrocarbons, hopanes, steranes and monocarboxylic acids were analysed in PM1. Contribution deals with extractions of these compounds from filters, preparations of samples, analyses by GC/MS and discussions of results of analysis. V PM1 aerosolu byly analyzovány anhydridy monosacharidů, polyaromatické uhlovodíky, hopany, sterany a monokarboxylové kyseliny. Příspěvek se zabývá extrakcemi těchto sloučenin z filtrů, přípravami vzorků, analýzami metodou GC/MS a diskusemi výsledků analýz.
Keywords:
organic compounds; PM1
Available at various institutes of the ASCR
Determination of organic compounds in PM1 in Brno and Šlapanice
Monosaccharide anhydrides, polyaromatic hydrocarbons, hopanes, steranes and monocarboxylic acids were analysed in PM1. Contribution deals with extractions of these compounds from filters, preparations ...
Analysis of saccharides and markers of wood combustion in atmospheric aerosols
Kubátková, Nela; Křůmal, Kamil; Mikuška, Pavel; Večeřa, Zbyněk
2011 - Czech
Present study deals with the analysis of saccharides (monosaccharides, disaccharides and alditols), monosaccharide anhydrides and markers of biomass and wood combustion in atmospheric aerosol and comparison of their concentrations in term of seasons. Studie se zabývá analýzou sacharidů (monosacharidy, disacharidy a alditoly), anhydridů monosacharidů a markerů spalování biomasy a dřeva v atmosférickém aerosolu a porovnáním jejich koncentrací v průběhu jednotlivých ročních období.
Keywords:
atmospheric aerosol PM2,5; saccharides; markers of biomass and wood combustion
Available at various institutes of the ASCR
Analysis of saccharides and markers of wood combustion in atmospheric aerosols
Present study deals with the analysis of saccharides (monosaccharides, disaccharides and alditols), monosaccharide anhydrides and markers of biomass and wood combustion in atmospheric aerosol and ...
Comparison of concentrations of organic compounds in PM1 aerosol in Brno and Šlapanice
Křůmal, Kamil; Mikuška, Pavel; Večeřa, Zbyněk
2011 - Czech
In this work the organic compounds and organic markers used for the identification of sources of aerosols were monitored. Monosaccharide anhydrides are emitted from biomass combustion, polyaromatic hydrocarbons from traffic and incomplete combustion, hopanes from traffic and coal combustion, steranes from traffic and fatty acids from cooking. V této práci byly sledovány koncentrace organických sloučenin a markerů, které slouží pro identifikaci zdrojů atmosférických aerosolů. Anhydridy monosacharidů pocházejí ze spalování biomasy, polyaromatické uhlovodíky z dopravy a nedokonalého spalování, hopany z dopravy a spalování uhlí, sterany z dopravy a mastné kyseliny z vaření.
Keywords:
monosaccharide anhydrides; hopanes; PAHs
Available at various institutes of the ASCR
Comparison of concentrations of organic compounds in PM1 aerosol in Brno and Šlapanice
In this work the organic compounds and organic markers used for the identification of sources of aerosols were monitored. Monosaccharide anhydrides are emitted from biomass combustion, polyaromatic ...
Seasonal variation in concentrations of metals and ions in urban aerosol in Brno and Šlapanice
Mikuška, Pavel; Křůmal, Kamil; Vojtěšek, Martin; Večeřa, Zbyněk
2011 - Czech
Urban aerosol particles in the size fraction PM1 were collected in Brno and Šlapanice in winter and summer of 2009 and 2010. Aerosols were analysed for ions and metals. Local traffic in summer and coal and wood combustion during household heating in winter were identified as the main emission sources of aerosols in both towns. Secondary aerosol components formed a significant part of aerosol during the whole year. Částice městského aerosolu ve velikostní frakci PM1 byly vzorkovány v Brně a Šlapanicích v zimě a létě 2009 a 2010. Aerosol byl analyzován na obsah iontů a kovů. Místní doprava v létě a spalování uhlí a dřeva v rámci vytápění domácností v zimě byly identifikovány jako hlavní emisní zdroje aerosolů v obou městech. Složky sekundárního aerosolu tvořily významnou část aerosolu v průběhu celého roku.
Keywords:
atmospheric aerosol; urban aerosol; emission sources
Available at various institutes of the ASCR
Seasonal variation in concentrations of metals and ions in urban aerosol in Brno and Šlapanice
Urban aerosol particles in the size fraction PM1 were collected in Brno and Šlapanice in winter and summer of 2009 and 2010. Aerosols were analysed for ions and metals. Local traffic in summer and ...
Semi-continuous analysis of water-soluble fraction of metals in atmospheric aerosols
Vojtěšek, Martin; Mikuška, Pavel; Večeřa, Zbyněk; Křůmal, Kamil
2011 - Czech
Characterization of new method for the semi-continuous determination of trace concentrations of water-soluble metalls in atmospheric aerosols with time resolution of 30 min. Fe3+, Co2+ and Cu2+ were selected as model metals. Charakterizace nové metody pro semi-kontinuální stanovení stopových koncentrací ve vodě rozpustné frakce kovů v atmosférickém aerosolu s časovým rozlišením 30 min. Modelovými kovy byly zvoleny Fe3+, Co2+ a Cu2+.
Keywords:
metals; semi-continuous system; atmospheric aerosols
Available at various institutes of the ASCR
Semi-continuous analysis of water-soluble fraction of metals in atmospheric aerosols
Characterization of new method for the semi-continuous determination of trace concentrations of water-soluble metalls in atmospheric aerosols with time resolution of 30 min. Fe3+, Co2+ and Cu2+ were ...
Luminescence of nanoparticles - quantum dots
Voráčová, Ivona
2011 - Czech
Compilation of materials, physical-chemical properties, synthesis and applications of quantum dots. Shrnutí materiálů, fyzikálně-chemických vlastností, přípravy a aplikací kvantových teček.
Keywords:
quantum dots; nanoparticles; luminescence
Available at various institutes of the ASCR
Luminescence of nanoparticles - quantum dots
Compilation of materials, physical-chemical properties, synthesis and applications of quantum dots.
Analysis of hopanes and steranes in PM1 in Brno and Šlapanice
Křůmal, Kamil; Mikuška, Pavel; Vojtěšek, Martin; Večeřa, Zbyněk
2011 - Czech
Contribution deals with analysis of hopanes and steranes in Brno and Šlapanice. Steranes are markers for traffic and hopanes for traffic and coal combustion. Příspěvek se zabývá analýzou hopanů a steranů v Brně a Šlapanicích. Sterany se řadí mezi markery pro dopravu a hopany mezi markery pro dopravu a spalování uhlí.
Keywords:
hopanes; steranes; PM1
Available at various institutes of the ASCR
Analysis of hopanes and steranes in PM1 in Brno and Šlapanice
Contribution deals with analysis of hopanes and steranes in Brno and Šlapanice. Steranes are markers for traffic and hopanes for traffic and coal combustion.
Seasonal and spatial variations of concentrations of metals in atmospheric aerosol and street dust in Brno and Ostrava
Vojtěšek, Martin; Mikuška, Pavel; Ličbinský, R.; Adamec, V.; Křůmal, Kamil
2011 - Czech
Study of elemental composition of PM10 and PM2.5 aerosols and street dust was performed in two different seasons and at two urban sites in the Czech Republic. Two localities with different potential sources were chosen for the identification of aerosol sources. Bylo provedeno studium elementárního složení PM10, PM2.5 a pouličního prachu pro dvě roční období a ve dvou městech v České republice. Pro identifikaci zdrojů aeroslů byly zvoleny lokality s různými potencionálními zdroji.
Keywords:
metals; street dust; atmospheric aerosol
Available at various institutes of the ASCR
Seasonal and spatial variations of concentrations of metals in atmospheric aerosol and street dust in Brno and Ostrava
Study of elemental composition of PM10 and PM2.5 aerosols and street dust was performed in two different seasons and at two urban sites in the Czech Republic. Two localities with different potential ...
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