Autor: Ascaso, C. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Advantages of application of the backscattered electron scanning images in the determination of soil structure and soil constituents
Autorzy:: Wierzchos, J.
Garcia-Gonzalez, M.T.
Ascaso, C.
Powiązania:: https://bibliotekanauki.pl/articles/25149.pdf
Data publikacji:: 1995
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:: soil structure
backscattered electron scanning image
soil constituent
microanalytical technique
soil component
Źródło:: International Agrophysics; 1995, 09, 1
0236-8722
Pojawia się w:: International Agrophysics
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Calcium phosphate preservation of faecal bacterial negative moulds in hyaena coprolites
Autorzy:: Pesquero, M.D.
Souza-Egipsy, V.
Alcala, L.
Ascaso, C.
Fernandez-Jalvo, Y.
Powiązania:: https://bibliotekanauki.pl/articles/22871.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Instytut Paleobiologii PAN
Opis:: The vertebrate fossil locality of La Roma 2, Spain (Upper Miocene, Late Vallesian, MN10) is characterised by a high abundance of mammalian coprolites, which provide direct clues to the diets and habitats of the organisms that produced them. X-ray diffraction analysis showed a sample of hyaena (cf. Lycyaena chaeretis) coprolites to be mostly composed of calcium phosphate. Ultrastructural SEM and TEM studies revealed three successive phases of preservation, including an initial phase of mineralisation that produced microspherulites within a very fine-grained cement. This indicates that most of the calcium phosphate present in the coprolites precipitated rapidly, which in turn facilitated the formation of negative moulds of faecal bacteria within the coprolite matrix.
Źródło:: Acta Palaeontologica Polonica; 2014, 59, 4
0567-7920
Pojawia się w:: Acta Palaeontologica Polonica
Dostawca treści:: Biblioteka Nauki

Artykuł

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