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    Wyświetlanie 1-6 z 6
    Tytuł:
    Biological markers and stable carbon isotope studies of bitumen impregnating Quaternary sediments at Starunia palaeontological site and vicinity (Carpathian region, Ukraine)
    Autorzy:
    Kotarba, M. J.
    Fabiańska, M.
    Więcław, D.
    Kowalski, A.
    Zych, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/191516.pdf
    Data publikacji:
    2009
    Wydawca:
    Polskie Towarzystwo Geologiczne
    Tematy:
    biomarkers
    stable carbon isotopes
    bitumen content
    oil origin
    woolly rhinoceros
    Starunia palaeontological site
    Carpathian region
    Ukraine
    Opis:
    Biological markers and stable carbon isotopic compositions of bitumen impregnating the Pleistocene and Holocene sediments around the Starunia palaeontological site (Carpathian region, Ukraine) near discovered remnants of a mammoth and three woolly rhinoceroses, and one almost completely preserved rhinoceros carcass found in 1907 and 1929, were investigated. The research was carried out to assess genetic connections between the bitumen and oils from the nearby deep accumulations of the Boryslav-Pokuttya and Skyba units of the Carpathians. Another aim of these geochemical studies was to reveal the secondary geochemical processes (oxidation and biodegradation) influencing the bitumen, and to determine which environments have been favourable or unfavourable for the preservation of large Pleistocene vertebrates. Bitumen included within the near-surface rocks are not genetically connected with residual organic matter present in Quaternary sediments. Geochemical features, such as distributions of pentacyclic triterpanes and steranes, biomarker parameters and isotope composition indicate that all bitumens originate from oil-prone, Type II kerogen with insignificant admixture of terrestrial Type III kerogen in the middle stage of catagenesis. The oils occurring in deep accumulations in the Starunia area were the sole source of bitumen found in the near-surface sediments. Input of immature organic matter to bitumen from Pleistocene and Holocene sediments has not been found. The main factors differentiating the bitumen were: biodegradation, water washing and/or weathering. Additional influence of transport of bitumen by brine was found. The most favourable conditions for preservation of large, extinct mammals within the Pleistocene muds exist in the vicinity of Nos 22 and 23 boreholes, where bitumen is best preserved. The worst conditions were found in the vicinity of Nos 1, 4, 4' and 15 boreholes. Intensification of biodegradation and weathering effects were followed by intensive, chaotic changes of the remnants of large Pleistocene mammals.
    Źródło:
    Annales Societatis Geologorum Poloniae; 2009, 79, No 3; 463-480
    0208-9068
    Pojawia się w:
    Annales Societatis Geologorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cytogenetic markers of Brassica napus L. chromosomes
    Autorzy:
    Hasterok, R
    Maluszynska, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2043142.pdf
    Data publikacji:
    2000
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    oil seed
    in situ
    silver staining
    chromosome number
    morphology
    molecular cytogenetics
    in vitro
    karyotype
    rDNA
    morphometric analysis
    plant breeding
    oilseed rape
    Brassica napus
    somatic hybridization
    transformation
    cytogenetic marker
    fluorescence
    hybridization
    genomic origin
    Źródło:
    Journal of Applied Genetics; 2000, 41, 1; 1-9
    1234-1983
    Pojawia się w:
    Journal of Applied Genetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Isolation and characterization of biosurfactant producing microorganisms from soils
    Izolacja i charakterystyka mikroorganizmów zdolnych do produkcji biosurfaktantów ze środowiska glebowego
    Autorzy:
    Pieprzyca, A.
    Ziembińska-Buczyńska, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/297132.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
    Tematy:
    biosurfactants
    surface-active compounds of biological origin
    microorganisms
    drop collapse test
    oil spreading test
    strain hemolytic potential
    biosurfaktanty
    związki powierzchniowo czynne pochodzenia biologicznego
    mikroorganizmy
    drop-collapse
    oil-spreading
    zdolność szczepu do hemolizy
    Opis:
    Biosurfactant production is critical not only from the standpoint of obtaining innovative and relatively cheap surface-active agents but also due to impossibility or limited biodegradation of conventional surfactants obtained by means of chemical syntheses. The main goal of the project was to isolate and characterize (macroscopically and microscopically) microorganisms capable of biosurfactant production and to evaluate the potential of these strains for biosurfactant production from the soil environment contaminated with crude oil products using the methods of conventional microbiology. The focus of the study was on isolation of pure bacteria cultures from soil contaminated with crude oil products sampled from the areas of a petrol station, macroscopic and microscopic identification of the isolated strains and testing their capability of biosurfactant production. It was demonstrated that 2 of 21 strains isolated from soil which was most likely contaminated with crude oil products showed a potential for biosurfactant production. This potential was evaluated by means of the drop collapse, oil spreading and hemolytic assay tests. The study also discussed basic characteristics of biosurfactants and their application in various domains of science and industry.
    Produkcja biosurfaktantów jest istotna z punktu widzenia nie tylko wytwarzania nowatorskich i względnie tanich środków powierzchniowo czynnych, ale także ze względu na brak możliwości lub bardzo ograniczoną biodegradację tradycyjnych surfaktantów wytwarzanych metodami syntez chemicznych. Głównym celem projektu było wyizolowanie oraz charakterystyka mikro- i makroskopowa mikroorganizmów zdolnych do produkcji biosurfaktantów wraz z oceną zdolności tych szczepów do produkcji biosurfaktantów ze środowiska glebowego zanieczyszczonego substancjami ropopochodnymi z użyciem metod klasycznej mikrobiologii. Zakres badań obejmował izolację czystych kultur bakteryjnych z gleby, zanieczyszczonej substancjami ropopochodnymi, pochodzącej z okolic stacji benzynowej, makro- i mikroskopową identyfikację wyizolowanych szczepów oraz testowanie ich zdolności do produkcji biosurfaktantów. Wykazano, że dwa spośród 21 wyizolowanych szczepów z gleby prawdopodobnie zanieczyszczonej związkami ropopochodnymi ma potencjał w produkcji biosurfaktantów. Zdolność tę oceniano z zastosowaniem testów „drop-collapse”, „oil-spreading” oraz zdolności szczepu do hemolizy. W pracy opisano również podstawowe cechy biosurfaktantów oraz ich zastosowanie w różnych dziedzinach nauki i przemysłu.
    Źródło:
    Inżynieria i Ochrona Środowiska; 2018, 21, 2; 191-204
    1505-3695
    2391-7253
    Pojawia się w:
    Inżynieria i Ochrona Środowiska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Origin and migration of oil from the Ukrainian Outer Carpathians to their Mesozoic basement: a case of Lopushna traps
    Autorzy:
    Radkovets, N. Y.
    Kotarba, M.
    Koltun, Y.
    Kowalski, A.
    Kosakowski, P.
    Więclaw, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/2060167.pdf
    Data publikacji:
    2016
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Ukrainian Carpathians
    Lopushna oil field
    oil origin
    biomarkers
    stable carbon isotopes
    migration pathways
    Opis:
    Lopushna oil field has been discovered in Mesozoic-Paleogene strata of the platform basement under the Ukrainian Outer (Flysch) Carpathians. Oils from two main accumulations, occurring in the Upper Cretaceous sandstone and Upper Jurassic limestone reservoirs, have been analysed in order to identify their origin and relation to the known petroleum systems in the region of the Outer Carpathians and the basement of the Carpathian Foredeep. Results of geochemical investigations of oils, including biomarker and isotopic data, show a good correlation with oils, accumulated in the Carpathian flysch strata. Oils are low-sulphur and did not undergo significant degradation. They were generated from Type II or II/III kerogen, deposited in anoxic environments in clastic sediments. Generation occurred at the peak of “oil window”, probably in the temperature range of 122 to 126oC. The presence of oleanane indicates the Cretaceous or younger source rocks. Good correlation on biomarker and isotopic data with the organic matter dispersed in Oligocene Menilite Beds, occurring at the top of the Carpathian flysch succession, allowed authors to identify them as source rocks for oils of the Lopushna field, which thus can be regarded as an oil family of the Outer Carpathians. The migration distance for both Lopushna oils and oils accumulated in the Carpathian flysch strata was similar. A number of sub-vertical dislocations, on which the subsided flysch strata occur at the same depth level with the Jurassic and Cretaceous rocks of the platform, can be assumed as possible migration pathways from the mature source rocks of the Oligocene Menilite Beds of Boryslav-Pokuttya, Skyba or Krosno units to the Lopushna type traps, which suggests the possibility of existence of other hydrocarbon accumulations of this type. The Lopushna field so far is unique containing this type of oil found in the basement of the Ukrainian Carpathian Foredeep.
    Źródło:
    Geological Quarterly; 2016, 60, 1; 133--148
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Origin of liquid hydrocarbons accumulated in the Miocene strata of the Polish Carpathian Foredeep and its Palaeozoic–Mesozoic basement
    Autorzy:
    Więcław, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/191540.pdf
    Data publikacji:
    2011
    Wydawca:
    Polskie Towarzystwo Geologiczne
    Tematy:
    oil origin
    biomarkers
    stable carbon isotopes
    oil-oil correlation
    Palaeozoic–Mesozoic basement
    Polish Carpathian Foredeep
    Opis:
    Petroleum geochemical data of 34 oils and condensates accumulated in the Carpathian Foredeep and its Mesozoic and Palaeozoic basement were used to assess their origin and genetic type. The analysed liquid hydrocarbons are characterized by variable densities and sulphur contents. No relationship between these parameters and the reservoir rock age has been found. Secondary processes of evaporative fractionation and biodegradation are evidenced for some oils. These processes proceeded most intensively on the oil from Góra Ropczycka-1K well. The oils from Opaka-1, Lubaczów-157 and Góra Ropczycka-1K wells were generated from organic matter deposited in the Upper Jurassic carbonates. The oil from the inflow in Załazie-2 well originated from the Cambrian strata, but also contains biomarkers characteristic of Miocene strata. The next family, genetically connected with the Silurian and Ordovician source rocks, consists of oils accumulated in the Lower Carboniferous carbonates in Nosówka deposit and in the Upper Jurassic in the inflow into Łękawica-1 well. The condensates collected from the Miocene (Łękawica-1, Pilzno-37, Tarnów-39 and -45 wells) and Upper Jurassic strata (Łąkta-27 and Tarnów-5 wells) were generated by organic matter dispersed in the Middle Jurassic or Lower Carboniferous clastic facies. The remaining oils, from Grobla-Pławowice, Wierzchosławice, Jastrząbka Stara, Partynia-Podborze, Dąbrowa Tarnowska, Brzezówka and Zagorzyce deposits, and the inflows into Tarnów-47 and Pilzno-12 wells were generated from kerogen enriched in organic sulphur usually dispersed in carbonate rocks. Such a type of sediments occurs in the Devonian and Lower Carboniferous strata. Also, these strata as well as the underlying Silurian rocks have sufficient maturity for generation of the discussed oils. The oleanane in the discussed oils most probably originates from kerogen of the Upper Cretaceous or Miocene strata, through which these oils migrated and eluted this biomarker.
    Źródło:
    Annales Societatis Geologorum Poloniae; 2011, 81, No 3; 443-458
    0208-9068
    Pojawia się w:
    Annales Societatis Geologorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Origin of oils accumulated in the Middle Cambrian reservoirs of the Polish part of the Baltic region
    Autorzy:
    Kowalski, A.
    Więcław, D.
    Kotarba, M. J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2059062.pdf
    Data publikacji:
    2010
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Baltic Region
    Lower Paleozoic
    oil origin
    biomarkers
    stable carbon isotopes
    oil-oil correlation
    Opis:
    We have examined 21 samples of crude oils accumulated in the Middle Cambrian sandstone reservoirs from the Polish part of the Baltic region. All the crude oils have similar parameters and indices, which suggests generation from the same source rock. Evaporative fractionation and biodegradation processes were detected in oil collected from the B4-N1/01 borehole. All crude oils have high gravities and low-sulphur contents, less than 0.3 wt.%, which suggests that their source rock contained low-sulphur kerogen deposited in a clastic environment. A low asphaltenes content (below 0.3 wt.%) and high saturate/aromatic hydrocarbon ratios indicate long migration distances or high thermal maturities. The longest migration distance was probably attained by oils from the arnowiec and B16 deposits. The biomarker data indicate an algal origin for the source organic matter deposited under conditions of clastic sedimentation. The stable carbon isotope data support this observation. The maturity of the oils analysed varies from ca. 0.75 to ca. 1.05% on the vitrinite reflectance scale. Unlike the B6, B16, Dbki and arnowiec accumulations, oils from the B3 and B4 accumulations reveal the lowest maturity.
    Źródło:
    Geological Quarterly; 2010, 54, 2; 205-216
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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