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    Wyświetlanie 1-3 z 3
    Tytuł:
    Co-firing of biomass with pulverised coal in oxygen enriched atmosphere
    Autorzy:
    Pawlak-Kruczek, H.
    Ostrycharczyk, M.
    Baranowski, M.
    Czerep, M.
    Zgóra, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/185809.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    biomass
    co-firing
    oxy-combustion
    biomasa
    współspalanie
    oksyspalanie
    Opis:
    The aim of the paper is a comparative study of co-firing high shares of wooden and agro-biomass with hard coal under oxy-fuel and air conditions in the laboratory scale reactor for pulverised fuels. The investigations of co-combustion behaviour NOx and SO2 emission and burnout were carried out for selected blends. Detailed investigations were concentrated on determining the effect of dosing oxygen method into the burner on NOx emission. The paper presents the results of co-firing blends with 20 and 50% share of biomass by mass in air and oxy-combustion condition. Biomass oxy-co-firing integrated with CCS (CO2 capture) technology could be a carbon negative technology. The reduction of NOx emissions in the conditions of oxy-co-firing is dependent on the concentration of oxygen in the primary stream of oxidiser. A significant reduction of NOx was achieved in the case of low oxygen concentration in the primary stream for each investigated blends. Co-firing of biomass with coal in an oxygen enriched atmosphere enhances combustion behaviour, lowers fuel burnout and as a result increases of the boiler efficiency.
    Źródło:
    Chemical and Process Engineering; 2013, 34, 2; 215-226
    0208-6425
    2300-1925
    Pojawia się w:
    Chemical and Process Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of gasifying agents and calcium oxide on gasification of low-rank coal and wastes
    Autorzy:
    Baranowski, M.
    Pawlak-Kruczek, H.
    Frydel, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/175194.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    gasification
    RDF
    sewage sludge
    lignite
    calcium oxide
    Opis:
    The process of gasification is one of the promising technologies of clean combustible gas production from low-grade coals, such as lignite, coal mud and subbituminous LR coals, and from biomass and waste. However, depending on the type of gasification material, the following aspects require investigation and development: the selection of a gasification technology (including parameters and gasifying agents) and the removal of the components constituting a burden and contamination from the raw gas. This paper presents the results of research on the gasification of lignite and sludge with added refuse derived fuel and the gasification of both these substances with added calcium sorbents. Two gasifying agents, water vapour and carbon dioxide, were used in the experiments, which were carried out in a fixed bed reactor at the temperatures of 600, 700, 800, 900, and 1000 ◦C. The effects of process temperature, the calcium oxide addition and the gasifying agent composition and quantity on fuel conversion and product gas composition have been determined. Higher process temperatures in both atmosphere of gasification (H2O and CO2) cause an increase in the volume fraction of hydrogen and carbon monoxide in the resulting gas. The effect of the addition of calcium oxide (CaO) for carbon dioxide gasification of sewage sludge exhibits the positive effect. The increase in the volume of hydrogen and carbon monoxide in the syngas from gasification of sewage was observed. The gasifying agent has a different effect on the composition of the gas depending on the temperature. The gasification process in the atmosphere of water vapour starts faster than in the atmosphere of carbon dioxide and hydrogen formation is significantly higher.
    Źródło:
    Transactions of the Institute of Fluid-Flow Machinery; 2017, 137; 141-155
    0079-3205
    Pojawia się w:
    Transactions of the Institute of Fluid-Flow Machinery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Molecular studies in osteogenesis imperfecta [OI] III. cDNA of COL1A1 and COL1A2 analysis using the BESS-T-Scan technique
    Autorzy:
    Sucharski, P
    Sanak, M.
    Kostyk, E.
    Pietrzyk, J.J.
    Kruczek, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2044221.pdf
    Data publikacji:
    1998
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    COL1A1 gene
    electrophoresis
    COL1A2 gene
    collagen production
    man
    RNA isolation
    mutation
    BESS-T-Scan technique
    molecular diagnosis
    DNA
    osteogenesis imperfecta
    cDNA synthesis
    fibroblast culture
    Opis:
    A BESS-T-Scan analysis of cDNA COL1A1 and COL1A2 obtained by RT-PCR derived from five patients with sporadic forms of ostegenesis imperfecta was performed. The study was done in four patients with type I and one patient with type III OI. The analysis revealed the presence of structural changes in two regions of cDNA COL1A1 in two patients. No quantitative changes referring to COL1A2 gene were noted in any patient. The above analysis was the first application of the BESS-T-Scan technique in a molecular diagnosis of OI. The applied method seems to be useful and fulfil the basic criteria of the screening method to detect and locate mutations.
    Źródło:
    Journal of Applied Genetics; 1998, 39, 4; 367-373
    1234-1983
    Pojawia się w:
    Journal of Applied Genetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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