Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

Wyszukujesz frazę "Florjan, D." wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
Efficiency of a 252Cf source in normal or in B-10 enriched lymphocytes evaluated by SCGE assay, classical cytogenetics and FISH technique
Autorzy:
Cebulska-Wasilewska, A.
Niedźwiedź, W.
Florjan, D.
Schneider, K.
Kopec, M.
Kreft, A.
Powiązania:
https://bibliotekanauki.pl/articles/147547.pdf
Data publikacji:
2001
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
BNC reaction
BSH o 252Cf
DNA and chromosomal damage
FISH
lymphocytes
Opis:
Biological effectiveness of a californium-252 source was evaluated after irradiations in vitro of normal or pretreated cells with compound enriched in the B-10 ion (Na210B12H11SH also known as BSH) in order to check the possibility of any enhancement effect due to the process of boron neutron capture. Peripheral blood lymphocytes were used as a model for human cells. Human blood samples or isolated lymphocytes were irradiated with the isotopic source of 252Cf, at the Faculty of Physics and Nuclear Techniques at the University of Mining and Metallurgy, Kraków, (both the neutron source and the samples were placed in an "infinite" polyethylene block). DNA and chromosomal damage were studied to compare the biological effectiveness of irradiation. Single cell gel electrophoresis also known as the Comet assay was done to investigate the DNA damage. Classical cytogenetic analysis was applied to assess the frequencies of unstable aberrations (dicentrics, rings and acentric fragments). To evaluate the frequencies of stable aberrations the fluorescence in situ hybridisation (FISH) with probes for chromosomes 1, 4 (14,3% of the whole genome) was performed. Linear (or close to linear) increases with radiation doses were observed for the DNA damage and aberration frequencies in lymphocytes both untreated or pretreated with BSH. Levels of translocations evaluated for the whole genome were comparable with the frequencies of dicentrics and rings. No significant differences were detected due to radiation dose in the frequencies of sister chromatid exchanges (SCE) detected in the second mitosis. Statistically no significant differences were observed in various biological end-points between normal or boron pre-treated cells.
Źródło:
Nukleonika; 2001, 46, 2; 41-49
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nowe znalezisko skrzemionkowanego pędu benetyta z Polski
New specimen of the silicified bennettitalean trunk from Poland
Autorzy:
Florjan, S.
Zdebska, D.
Powiązania:
https://bibliotekanauki.pl/articles/2074875.pdf
Data publikacji:
2011
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Monanthesia
benetyty
Cycadeoidaceae
skrzemionkowany pęd
silicified trunk
Polska
Opis:
Described bennettitalean fossil has been found as redeposited in Jankowice near Zator. It is a fragment of silicified trunk with remains of leaves petioles and strobili. Characteristic triangular sections of petioles bases with 4–5 ribs, which used to form gutters while the plant was alive, can be seen on the surface of the trunk. In the axil of the leaves strobili were present. Long barren scales in spiral layout can be seen on the axis of a strobile. This build of the specimen resembles the Monanthesia genus, species M. magnifica from the Upper Cretaceous of New Mexico, USA described by Delevoryas in 1959. This is the first specimen of the Monanthesia genus in Poland. Until now only a few of bennettitalean trunks are known from Poland; they are, however, of the Cycadeoidea genus.
Źródło:
Przegląd Geologiczny; 2011, 59, 7; 520-522
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

    Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies