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Wyszukujesz frazę "microtomography" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
The use of X-ray computed microtomography for graptolite detection in rock based on core internal structure visualization
Autorzy:
Kaczmarek, Ł.
Kozłowska, A.
Maksimczuk, M.
Wejrzanowski, T.
Powiązania:
https://bibliotekanauki.pl/articles/139097.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
computed microtomography
visualization
graptolites
Silurian
Baltic Basin shale
mikrotomografia komputerowa
wizualizacja
graptolity
sylur
łupki basenu bałtyckiego
Opis:
This paper presents for the first time X-ray computed microtomography (μCT) analysis as a technique for Silurian graptolite detection in rocks. The samples come from the Jantar Bituminous Claystones Member of the Opalino core, Baltic Basin, northern Poland. Images were obtained with spatial resolution of 25 μm, which enabled the authors to create a 3-D visualization and to calculate the ratio of fissure and graptolite volume to the total sample volume. A set of μCT slices was used to create a 3-D reconstruction of graptolite geometry. These μCT slices were processed to obtain a clearly visible image and the volume ratio. A copper X-ray source filter was used during exposure to reduce radiograph artifacts. Visualization of graptolite tubaria (rhabdosomes) enabled Demirastrites simulans to be identified. Numerical models of graptolites reveal promising applications for paleontological research and thus for the recognition and characterization of reservoir rocks.
Źródło:
Acta Geologica Polonica; 2017, 67, 2; 299-306
0001-5709
Pojawia się w:
Acta Geologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Możliwości wykorzystania wysokorozdzielczej mikrotomografii komputerowej w badaniach geologiczno-inżynierskich na przykładzie analizy iłów mio-plioceńskich
The possibility of using high-resolution X-ray computed microtomography in engineering geology analysis, based on a study of Mio-Pliocene clays
Autorzy:
Kaczmarek, Ł.
Powiązania:
https://bibliotekanauki.pl/articles/2075555.pdf
Data publikacji:
2016
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
wysokorozdzielcza mikrotomografia
geologia inżynierska
iły mio-plioceńskie
stacja metra Kopernik
computed microtomography
engineering geology
Mio-Pliocene clay
Kopernik underground station
Opis:
The paper considers the use of high-resolution X-ray computed microtomography (μCT) as a possible method in engineering-geological laboratory research for indicating areas of weakness, location of fissures and determining homogeneity of clay samples. Furthermore, the studies were used to provide methodological guidance. Mio-Pliocene (Neogene) clay samples were taken from an excavation site of the Kopernik underground station in Warsaw. First, natural humidity, bulk density and fraction analyses of samples were made. Secondly, μCT scans were conducted, with the use of copper filters. In the final stage of the study, internal structure images for samples were processed and analysed. Furthermore, a numerical model of dry sample was developed. During the study it was observed that the increase of temperature caused by X-ray radiation has a destructive effect on the sample. This effect was eliminated by applying a protective layer on the sample, using engine oil. The article quantifies the ratio of radiation-heated fissure volume to dry sample volume and the natural fissure volume to sample volume. Moreover, sample areas with different densities or chemical composition were studied. The results lead to the conclusion that the μCT technique is applicable to characterise of Mio-Pliocene clay, supplying internal structure assessment and fissure quantification that allow for samples verification to further engineering geology in-depth analysis.
Źródło:
Przegląd Geologiczny; 2016, 64, 2; 105--112
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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