1. Evolution of the microstructure during the early stages of sintering barium hexaferrite nanoplateletsBlaž Belec, Darja lisjak, Darko Makovec, Sašo Gyergek, Tanja Goršak, 2019, izvirni znanstveni članek Ključne besede: Nanoparticle, sintering-Hexaferrite nanoplatelets, Magnetic properties, Fusion grain growth
Objavljeno: 17.07.2019; Ogledov: 0; Prenosov: 0
 Polno besedilo (1,49 MB) |
2. Methyl halide emission estimates from domestic biomass burning in AfricaM Iqbal Mead, M Anwar H Khan, Iain R White, Graham Nicless, Dudley E Shallcross, 2008, izvirni znanstveni članek Opis: Inventories of methyl halide emissions from domestic burning of biomass in Africa, from 1950 to the present day and projected to 2030, have been constructed. By combining emission factors from Andreae and Merlet [2001. Emission of trace gases and aerosols from biomass burning. Global Biogeochemical Cycles 15, 955-966], the biomass burning estimates from Yevich and Logan [2003. An assessment of biofuel use and burning of agricultural waste in the developing world. Global Biogeochemical Cycles 17(4), 1095, doi:10.1029/2002GB001952] and the population data from the UN population division, the emission of methyl halides from domestic biomass usage in Africa has been estimated. Data from this study suggest that methyl halide emissions from domestic biomass burning have increased by a factor of 4-5 from 1950 to 2005 and based on the expected population growth could double over the next 25 years. This estimated change has a non-negligible impact on the atmospheric budgets of methyl halides.
Ključne besede: Africa, Biofuel, Domestic biomass burning, Emission factor, Methyl halide
Objavljeno: 17.07.2019; Ogledov: 0; Prenosov: 0
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3. A study of pollutant concentration variability in an urban street under low wind speedsAdrian Dobre, Graham Nickless, Iain R White, Catheryn S Price, Damien Martin, Dudley E Shallcross, 2008, izvirni znanstveni članek Opis: The short time‐scale variability in pollutant concentrations in an urban street under very low wind speed conditions and short source–receptor distance has been investigated using the inert tracer sulfur hexafluoride (SF6) as a continuous point‐source (release times ≥ 5 min), and fast detection using separation by gas chromatography coupled with a μ‐electron capture detector (ECD). The results are complex but can be broadly interpreted in terms of horizontal wind speed and direction coherence. Comparisons with a simple dispersion model suggest that observed time‐averaged maximum concentrations approach predicted values, whilst instantaneous maximum concentrations vary greatly and would therefore be difficult to predict.
Ključne besede: dispersion, tracer, intermittency
Objavljeno: 17.07.2019; Ogledov: 0; Prenosov: 1
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4. An estimation of the global emission of methyl bromide from rapeseed (Brassica napus) from 1961 to 20032008, izvirni znanstveni članek Opis: Gan et al. [Gan, J., Yates, S.R., Ohr, H.D., Sims, J.J., 1998. Production of methyl bromide by terrestrial higher plants. Geophysical Research Letters 25 (19), 3595–3598] have reported that plants of the family Brassicaceae take up bromide from soils and subsequently release methyl bromide (CH3Br) to the atmosphere deriving a significant emission from this source of about 7 Gg(109 g) yr−1. In this study, we determine a yearly global emission rate for CH3Br from one such species, rapeseed, from 1961 to 2003 using data on crop harvest index and growth rate in conjunction with global production data. This study suggests that CH3Br emissions from rapeseed have increased 10-fold from 1961 to 2003 and by a factor of 3–4 since 1980. It also suggests that the geographical distribution of emissions has also changed substantially in the last 40 yr. The annual emission of CH3Br from mustard and cabbage is also estimated; whilst relative levels emitted from these species are less significant, as these crops are continually exploited for new applications CH3Br emissions are set to increase.
Ključne besede: CH3Br, Rapeseed, Brassica, Ozone, Biosphere
Objavljeno: 17.07.2019; Ogledov: 0; Prenosov: 0
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7. Experimental determination of black and brown carbon heating rate from mid-latitudes to the Arctic ocean, and related energy gradientLuca Ferrero, Luca Cataldi, Griša Močnik, Asta Gregorič, Piotr Markuszewski, Przemek Makuch, Paulina Pakszys, Tomek Petelski, E. Bolzacchini, Tymon Zielinski, 2019, objavljeni povzetek znanstvenega prispevka na konferenci Ključne besede: black carbon, heating rate, Arctic
Objavljeno: 17.07.2019; Ogledov: 0; Prenosov: 0
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8. Multi-wavelength aerosol absorption coefficient measurements: instrument inter-comparison and results of source and source-component modellingPaolo Prati, Ezio Bolzacchini, Marco Cataldi A., Asta Gregorič, Griša Močnik, Mario Massabò, Sara Valentin, Francesca Soldan, Luca Ferrero, Vera Bernardoni, Gianluigi Valli, Roberta Vecchi, 2019, objavljeni povzetek znanstvenega prispevka na konferenci Ključne besede: aerosol absorption, method intercomparison
Objavljeno: 17.07.2019; Ogledov: 0; Prenosov: 0
Polno besedilo (6,60 MB) |
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10. Implementation of liquid chromatography coupled to thermal lens spectrometry (HPLC-TLC) in studies of yeats' role in formation of stable pigments in Pinot Noir winesBranka Mozetič Vodopivec, Jelena Topič, Lorena Butinar, Natka Ćurko, Karin Kovačević Ganić, Dorota Korte Kobylinska, Mladen Franko, 2019, objavljeni povzetek znanstvenega prispevka na konferenci Ključne besede: thermal lens spectrometry, pigments, Pinot Noir wines
Objavljeno: 16.07.2019; Ogledov: 13; Prenosov: 0
Polno besedilo (29,62 MB) |
