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    Wyświetlanie 1-6 z 6
    Tytuł:
    Nowa baza danych konodontowego wskażnika przeobrażeń termicznych (CAI)
    Autorzy:
    Malec, J.
    Narkiewicz, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/2065846.pdf
    Data publikacji:
    2005
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    bazy danych
    wskaźnik przeobrażeń termicznych
    konodonty
    Źródło:
    Przegląd Geologiczny; 2005, 53, 1; 33-37
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Termiczne uwarunkowania zjawiska przemagnesowań dewońskich skał węglanowych w regionie kieleckim Gór Świętokrzyskich
    Thermal controls on the remagnetization of Devonian carbonate rocks in the Kielce region (Holy Cross Mts.)
    Autorzy:
    Grabowski, J.
    Narkiewicz, M.
    Sobień, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/2074421.pdf
    Data publikacji:
    2006
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    paleomagnetyzm
    dewon
    dolomityzacja
    skała węglanowa
    Góry Świętokrzyskie
    paleomagnetism
    thermal alteration
    dolomitization
    carbonates
    Devonian
    Holy Cross Mountains
    Opis:
    Paleomagnetic and petrological analyses were performed on Devonian carbonate rocks from the Kielce region (Janczyce 1 borehole, Dule, Łagowica escarpment, Budy Quarry) in the Holy Cross Mts. Rock samples were selected from localities with different degree of thermal alteration, diversified lithology and stratigraphy. Investigated carbonates, excluding those from the Budy Quarry, revealed traces of the Early Permian remagnetization related to magnetite. The intensity of the Late Variscan remagnetization is linked to rocks affected by the second stage of dolomitization with increased thermal maturity in the northern part of the Kielce region. The magnetic signal is probably related to rocks’self-cooling, fixed as a result of the latest Carboniferous to Early Permian uplift.
    Źródło:
    Przegląd Geologiczny; 2006, 54, 10; 895-905
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Conodont biostratigraphy of shallow marine Givetian deposits from the Radom-Lublin area, SE Poland
    Autorzy:
    Narkiewicz, K.
    Bultynck, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/2059510.pdf
    Data publikacji:
    2007
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Radom-Lublin area
    Givetian
    conodonts
    biostratigraphy
    standard zonations
    alternative zonation
    Opis:
    Detailed conodont data were obtained from 66 samples in 9 deep wells representative of three palaeogeographic regions of the Mid Devonian epicontinental basin of southeastern Poland: (1) the elevated part of the East European Platform representing the basin margin, (2) the Lublin Graben with a larger proportion of open marine systems, (3) the Radom Area characterized by more off shore, purely marine deposition and larger subsidence rates in the Radom Area. The 1344 specimens collected were as signed to 8 genera: Icriodus, Polygnathus, Ancyrodella, Belodella, Mehlina, Neopanderodus, Pandorinellina and Skeletognathus, and 38 taxa of species or subspecies rank. The vertical distribution of the conodont as semblages studied in particu ar sections is highly irregular and discontinuous with many barren intervals con rolled by less suitable palaeocological conditions, mostly representing restricted and/or very shallow-water facies. We found only a single index species characteristic of deeper marine facies, as applied in the standard conodont zonation. There -fore the biostratigraphic interpretation also takes into account the total range of all taxa found in particular samples, established after acritical analysis of adequately published total ranges of these taxa. The stratigraphicranges of the following taxa were modified: Icriodus arkonensis arkonensis, I. a. walliserianus, I. eslaensis, I. platyobliquimarginatus, I. subterminus, I. aff. I. subterminus, Polygnathus ansatus, P. latifossatus, P. linguiformis linguiformis, P. timorensis and P. varcus. As a result of the stratigraphic analysis of the conodon't assemblages we distin guished five zones in the Givetian of the studied area, i.e. the rhenanus/varcus, ansatus, hermanni, norrisi (=lower part of Lower falsiovalis Zone) zones, and also two in formal units, the subterminus and insita fau nas. We documented the co-occurrence of I. subterminus and P. latifossatus which supports the earlier supposition of Rogers (1998) that the Lower subterminus Fauna may partly corre pond to the Lower hermanni Zone.
    Źródło:
    Geological Quarterly; 2007, 51, 4; 419-442
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Decomposition of ethylene on iron catalyst to obtain carbon nanotubes and the way of their purification
    Autorzy:
    Pełech, I.
    Owodziń, K.
    Narkiewicz, U.
    Powiązania:
    https://bibliotekanauki.pl/articles/2080035.pdf
    Data publikacji:
    2010-01-01
    Wydawca:
    Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
    Opis:
    This paper describes preparation and characterization of carbon nanotubes obtaining using ethylene as a carbon source and iron as catalyst. Additionally purification procedure of carbon nanomaterials is presented. Purification was conducted in two stages. In the first one hydrogen or air was used in order to gasify unwanted carbon forms. In the second one - various reactants (nitric, hydrochloric or nitro-hydrochloric acids) were applied to remove metal particles. Obtained materials were characterized using X-ray diffraction, transmission electron microscopy and thermogravimetry.
    Źródło:
    Annales Universitatis Mariae Curie-Skłodowska, sectio AA – Chemia; 2010, 65; 20-30
    2083-358X
    Pojawia się w:
    Annales Universitatis Mariae Curie-Skłodowska, sectio AA – Chemia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Preparation of activated carbon from beet molasses and TiO₂ as the adsorption of CO₂
    Autorzy:
    Glonek, K.
    Sreńscek-Nazzal, J.
    Narkiewicz, U.
    Morawski, A.
    Wróbel, R.
    Michalkiewicz, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/1075525.pdf
    Data publikacji:
    2016-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.05.U-
    68.43.-h
    Opis:
    The objective of this work is to produce activated carbon from sugar beet molasses containing TiO₂ for CO₂ adsorption and reduction. Textural properties of activated carbons were obtained based on the adsorption-desorption isotherms of nitrogen at 77 K. The specific surface areas of activated carbons were calculated by the Brunauer-Emmett-Teller method. The volumes of micropores were obtained by density functional theory method. The adsorption isotherms of CO₂ were measured up to the pressure of 1 atm at a temperature of 40°C. The best activated carbon adsorbed 1.9 mmol/g of CO₂.
    Źródło:
    Acta Physica Polonica A; 2016, 129, 1; 158-161
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The pre-Taghanic (Givetian, Middle Devonian) ecosystems of Miłoszów (Holy Cross Mts, Poland)
    Autorzy:
    Halamski, Adam T.
    Baliński, Andrzej
    Racki, Grzegorz
    Amler, Michael R. W.
    Basse, Martin
    Denayer, Julien
    Dubicka, Zofia
    Filipiak, Paweł
    Kondas, Marcelina
    Krawczyński, Wojciech
    Mieszkowski, Radosław
    Narkiewicz, Katarzyna
    Olempska, Ewa
    Wrzołek, Tomasz
    Wyse Jacson, Patrick N.
    Zapalski, Mikołaj K.
    Zatoń, Michał
    Kozłowski, Wojciech
    Powiązania:
    https://bibliotekanauki.pl/articles/2171821.pdf
    Data publikacji:
    2022
    Wydawca:
    Polskie Towarzystwo Geologiczne
    Tematy:
    stratigraphy
    palaeoecology
    biota
    biodiversity
    mesophotic
    deeper shelf
    climate
    carbonate
    Opis:
    The middle and upper parts of the Skały Fm, Early to Middle Givetian in age, were investigated in four sections at Miłoszów Wood in the Łysogóry Region (northern region of the Holy Cross Mountains, central Poland). The dating is based on conodonts (Polygnathus timorensis Zone to the later part of the Polygnathus varcus/Polygnathus rhenanus Zone; early Polygnathus ansatus Zone cannot be excluded) and spores (Ex1–2 subzones) and, coupled with cartographic analysis and geophysical investigation, allows correlation within the strongly faulted succession. Significant lateral facies variations within the carbonate ramp depositional system in comparison with the better studied Grzegorzowice–Skały section, about 3 km distant, are documented, thanks to conodont-based correlation of both successions. Foraminifers, fungi, sponges, rugose and tabulate corals, medusozoans, microconchids and cornulitids, polychaetes (scolecodonts), molluscs (bivalves, rostroconchs, and gastropods), arthropods (trilobites and ostracods), bryozoans, hederelloids, ascodictyids, brachiopods, echinoderms (mostly crinoids, rare echinoids, holuthurians, and ophiocistoids), conodonts, fish, plants (prasinophytes, chlorophycophytes, and land plant spores), and acritarchs are present. Brachiopods are the most diverse phylum present (68 species), other richly represented groups are bryozoans and echinoderms; in contrast, cephalopods and trilobites are low in diversity and abundance. The muddy, middle to outer ramp biota (200 marine taxa, including 170 species of marine animals, 22 photoautotrophs, 6 forams) represents a mixture of allochthonous shallower-water communities (upper BA3), including storm- and possibly tsunami-affected coral mounds, and autochthonous deep-water soft-bottom brachiopod (e.g., Bifida–Echinocoelia) communities (BA 4–5). The richness and diversity of the Miłoszów biota is relatively high, comparable with other approximately coeval pre-Taghanic ecosystems during the Devonian climatic deterioration (cooling). Preliminary data indicate that in the Holy Cross Mountains, no large-scale replacement of brachiopod (and probably many other benthic ones, like crinoids) communities took place between the Early–Middle Givetian and the Early Frasnian, in contrast to the demise of the Hamilton/Upper Tully fauna in the Appalachian Basin. Such a similarity of pre- and post-Taghanic faunas does not exclude the occurrence of environmental perturbations and transient community turnovers, caused by immigrations during the Taghanic Biocrisis, but evidences the successful recovery of the indigenous biota.
    Źródło:
    Annales Societatis Geologorum Poloniae; 2022, 92, 4; 323--379
    0208-9068
    Pojawia się w:
    Annales Societatis Geologorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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