Autor: Kędzierski, Łukasz - Katalog OPAC zbiorów

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Tytuł:: Badania meteorytu Odessa przy użyciu nowoczesnych technik inżynierii materiałowej
Meteorite Odessa investigations with use of modern techniques of materials engineering
Autorzy:: Ferdzyn, Justyna
Gołdyn, Paweł
Kędzierski, Łukasz
Radaszkiewicz, Anna
Sroczyńska, Aleksandra
Jędrzejczak-Gruszczyńska, Anna
Makówka, Marcin
Karczemska, Anna
Powiązania:: https://bibliotekanauki.pl/articles/1033079.pdf
Data publikacji:: 2017
Wydawca:: Polskie Towarzystwo Meteorytowe
Tematy:: Odessa iron meteorite
Raman spectroscopy
SEM EDS
XRD
Opis:: Odessa iron meteorite was investigated with scanning electron microscopy (SEM), Raman spectroscopy and X-ray diffraction (XRD) techniques. The research has shown the existence of minerals such as schreibersite, troilite, taenite, kamacite, cohenite, graphite and diamond in the examined sample. Raman spectroscopy allowed to identify different allotropic forms of carbon, which is diamond and graphite with different levels of order.
Źródło:: Acta Societatis Metheoriticae Polonorum; 2017, 8; 40-51
2080-5497
Pojawia się w:: Acta Societatis Metheoriticae Polonorum
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Microstructural characteristics and seasonal growth patterns observed in Metoposaurus krasiejowensis teeth
Autorzy:: Weryński, Łukasz
Kędzierski, Mariusz
Powiązania:: https://bibliotekanauki.pl/articles/2201224.pdf
Data publikacji:: 2022
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: Metoposaurus
Krasiejów
teeth
adaptations
growth lines
fluorapatite
Opis:: The tooth microstructure of Metoposaurus krasiejowensis was studied to observe external morphology, internal microstructure (comprising dentine structure and directional porosity as possible predatory adaptations) and enamel/enameloid mineral composition. Scanning electron microscopy (SEM) observation and thin-section inspection by light microscope enabled us to recognize a directional porosity in the tooth cross-sections, interpreted here as a part of the labyrinthodont structure displayed by temnospondyls and related groups. This network of canals is highly complicated and reveals a three-dimensional structure. The teeth present different cross-sections based on the distance from the tip, with a wide, circular, reinforced base and lateral compressed, directional cuspidal section with cutting edge. Interestingly, the internal structure observed in M. krasiejowensis teeth exhibit a peculiar variation of internal structure of temnospondyl teeth, as the convoluted canal-like structure seems to be irregular and appears in the upper section of teeth, while teeth bases show a regular structure with a pulpal cavity circled by pores. Furthermore, bands of incremental growth marks interpreted as Andresen lines, characterized by pronounced colour variation, were observed with strong implications for seasonal growth patterns in dentine. Additionally, a significant proportion (1.43–2.73%) of fluoride was observed as a component of enamel by scanning electron microscopy–energy dispersive spectroscopy (SEM–EDS) point and mapping analyses, suggesting a fluorapatite mineralogy of enamel.
Źródło:: Geological Quarterly; 2022, 66, 3; art. no. 26
1641-7291
Pojawia się w:: Geological Quarterly
Dostawca treści:: Biblioteka Nauki

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