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    Wyświetlanie 1-5 z 5
    Tytuł:
    Distribution of bacteria, organic carbon and amino acids in the southern part of Drake Passage and in Bransfield Strait during the BIOMASS - SIBEX (December1983 —January 1984)
    Autorzy:
    Zdanowski, Marek K.
    Powiązania:
    https://bibliotekanauki.pl/articles/2057351.pdf
    Data publikacji:
    1985
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Antarctic
    bacteria
    organic carbon
    amino acids
    distribution
    Źródło:
    Polish Polar Research; 1985, 6, 1-2; 43-63
    0138-0338
    2081-8262
    Pojawia się w:
    Polish Polar Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Recent alterations of aerosol concentration, mercury distribution and organic matter deposition in the Arctic
    Autorzy:
    Pempkowiak, J.
    Zielinski, T.
    Petelski, T.
    Zaborska, A.
    Beldowski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/11960.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    aerosol concentration
    mercury distribution
    organic matter
    organic carbon
    deposition
    Arctic
    Opis:
    Material fluxes in the Arctic and Antarctic have been, in several respects, strongly affected recently. For example, atmospheric turbidity conditions are frequently subject to strong changes due to haze and dust transport episodes, which can cause considerable perturbations in the radiation balance of the atmosphere beyond regional scale. This, directly or indirectly, contributes to the increased mercury deposition and organic matter fluxes to sediments. The results show that local emissions are not always the most important factors influencing the composition of aerosol in the atmosphere of the west Spitsbergen region. The direct radiative impact of polar aerosols on the surface and at the top of the atmosphere (TOA) need to be studied more closely through both theoretical studies on the aerosol radiative properties and measurements of the surface reflectance characteristics. Mercury dissolved/solid partitioning, both in the unconsolidated, fluffy layer of suspended matter covering the sediments, and the uppermost sediment layer, indicate that the influence of the athmospheric mercury deposition event (AMDE) can prolong well into summer (July/August), and can provide a pathway to the food chain for mercury contained in sediments. Since terrigenous supplies of organic carbon to the Barents Sea are minor (∼5%) compared to the marine supply, modern sediment deposits in this region sequester on average 6.0 g/m2year organic carbon, or 5.8% of the annual integrated pelagic primary production. This burial fraction exceeds, by a factor of 3, the burial fraction derived for the Holocene.
    Źródło:
    Papers on Global Change; 2011, 18
    2300-8121
    1730-802X
    Pojawia się w:
    Papers on Global Change
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Distribution and fate of polycyclic aromatic hydrocarbons (PAHs) in recent sediments from the Gulf of Gdańsk (SE Baltic)
    Autorzy:
    Lubecki, L.
    Kowalewska, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/48378.pdf
    Data publikacji:
    2010
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    Baltic Sea
    Gdansk Gulf
    Vistula River
    anthropogenic stress
    distribution
    environment parameter
    hydrocarbon
    marine area
    organic carbon
    pollution
    polycyclic aromatic hydrocarbon
    sediment
    water
    Źródło:
    Oceanologia; 2010, 52, 4
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Occurrence and germination of dinoflagellate cysts in surface sediments from the Red Sea off the coasts of Saudi Arabia
    Autorzy:
    Mohamed, Z.A.
    Al-Shehri, A.M.
    Powiązania:
    https://bibliotekanauki.pl/articles/48723.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    occurrence
    germination
    dinoflagellate cyst
    cyst
    Red Sea
    Saudi Arabia
    coast
    toxic species
    distribution
    abundance
    surface sediment
    organic carbon
    silt
    clay
    Cochlodinium polykrikos
    Prorocentrum minimum
    Dinophysis
    acuminata
    Alexandrium catenell
    Scrippsiella trochoidea
    Opis:
    The distribution and abundance of dinoflagellate cyst assemblages were investigated in surface sediments from south-western Red sea coasts of Saudi Arabia at six sites during March 2010. A total of 19 taxa of dinoflagellate cysts were identified from all sites. The sampling sites showed a similar cyst assemblage, but they differed in total cyst abundance (3 to 4083 cysts g−1 dry weight). Cyst abundance was strongly correlated with sediment characteristics, the highest numbers being recorded in sediments with large contents of organic carbon, silt and clay. Cyst assemblages were dominated by cysts of potentially toxic species, including Cochlodinium polykrikos, Prorocentrum minimum, Dinophysis acuminata, Alexandrium catenella and Scrippsiella trochoidea. Most cysts germinated successfully at different rates at 15 and 25◦C. This study suggests that surface sediments from all Saudi Red Sea coasts should be monitored for the presence of dinoflagellate cysts to give ample warning of the presence and abundance of toxic species in a given area.
    Źródło:
    Oceanologia; 2011, 53, 1
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Biological stability of water in water distribution systems. The effect of water treatment trials
    Autorzy:
    Wolska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/206902.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    water treatment
    carbon
    groundwater
    microorganisms
    nitrogen removal
    organic carbon
    surface waters
    water aeration
    water distribution systems
    water supply systems
    biological stability
    inorganic nitrogen
    uzdatnianie wody
    węgiel
    wody gruntowe
    mikroorganizmy
    usuwanie azotu
    węgiel organiczny
    wody powierzchniowe
    napowietrzanie wody
    systemy dystrybucji wody
    wodociągi
    stabilność biologiczna
    stężenie dwutlenku węgla
    azot nieorganiczny
    Opis:
    Research into the removal efficiency of biogenic substances, necessary for the growth of heterotrophic microorganisms, was carried out for the following water treatment trials: surface water, infiltrative water and mixed surface water after microsieving with aerated underground water. The results have shown that the efficiency of removal of organic substances, independently of the type of treated water, increased along with the organic carbon concentrations in raw water. The average effectiveness of phosphate removal was: 92.1%, 88.8% and 83.7% for surface, infiltrative and mixed water, respectively. In all analyzed systems, presence of phosphates was an limiting factor for the regrowth of microorganisms in the distribution system. In none of the water treatment trials, effective removal of inorganic nitrogen has been recorded.
    Źródło:
    Environment Protection Engineering; 2015, 41, 2; 147-157
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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