Informacja

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

Wyszukujesz frazę "Nikolic, T." wg kryterium: Autor


Wyświetlanie 1-4 z 4
Tytuł:
RAPD markers and black pine [Pinus nigra Arnold] intraspecies taxonomy - evidence from the study of nine populations
Autorzy:
Liber, Z
Nikolic, T.
Mitic, B.
Satovic, Z.
Powiązania:
https://bibliotekanauki.pl/articles/59270.pdf
Data publikacji:
2003
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
classification
Mediterranean Basin
botany
taxonomy
distribution
black pine
population
intraspecies taxonomy
Pinus nigra
Opis:
Although intraspecies researches within the black pine (Pinus nigra Arnold) have a long tradition, the intraspecies taxonomy, classification and chorology are still unclear. Among the numerous reasons that have caused this situation the most important are: the absence of a study that would completely cover the whole range of this species, the impossibility of connection of results of the existing detailed studies of certain areas, and the high variability of traits which have been used so far. Since the characteristics of the molecular systematic techniques could make possible the research free of the mentioned shortages, the intention of this study was to determine the relationships among nine populations of black pine using the random amplified polymorphic DNA (RAPD). The obtained results were compared to the recent results of the morphological and anatomical analysis of the leaves of the same populations. The RAPD results clearly divided the Croatian populations from populations of Austria (subsp. nigra) and Turkey (subsp. pallasiana), while among Croatian populations, as in previous study, the existence of several groups (subsp. illyrica, subsp. dalmatica and transitional population between them) was noticed. It is assumed that the optimisations conducted in this study will finally make possible estimating the relationships on the level of the whole range of the black pine and the classification based on molecular traits that are probably less dependent on environmental influences than it has been the case with the characteristics mostly used so far.
Źródło:
Acta Societatis Botanicorum Poloniae; 2003, 72, 3
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis and distributional patterns of the invasive flora in a protected mountain area - a case study of Medvednica Nature Park (Croatia)
Autorzy:
Vukovic, N.
Bernardic, A.
Nikolic, T.
Hrsak, V.
Plazibat, M.
Jelaska, S.D.
Powiązania:
https://bibliotekanauki.pl/articles/56776.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
distribution pattern
invasive flora
flora
protected area
mountain area
Medvednica Nature Park
Croatia
invasive plant
alien plant
dispersal strategy
habitat
regression
Opis:
In this paper we have analysed invasive flora of Medvednica Nature Park, Croatia with respect to their origins, life forms, systematic positions, types of seed dispersal, Ellenberg indicator values and spatial distributions using MTB 1/64 grid units for analyses. A total of 27 invasive plant species, belonging to 14 families, were recorded with Asteraceae being the most frequently occurring family. Therophytes were the most common life form, as is generally true of Croatian invasive plants; however, hemicryptophytes and geophytes were more frequent in Medvednica. Here, invasive plants originated mainly from both Americas with slightly lower portion in comparison to all Croatian invasive plants, while contrary was the case when comparing those originated from Asia. The most widespread species was Erigeron annuus (L.) Pers., and the species with the lowest occurrence were Chamomilla suaveolens (Pursh.) Rydb and Datura innoxia Mill. A multiple regression model explains 44% of the spatial variability in the invasive plants data per MTB 1/64 unit, using the number of all recorded plant species, the average elevation and the lengths of paths and roads as estimators. The latter two variables also had the most influence on the ordination axes in analyses of the spatial distribution of seed dispersal types present in each MTB 1/64 unit. Anemochory was the most frequent type of seed dispersal.
Źródło:
Acta Societatis Botanicorum Poloniae; 2010, 79, 4
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Students’ emotional state and educational efficiency: temptations of modern education
Autorzy:
Nikolić, Slavka T.
Vrgović, Petar
Stanković, Jelena
Safranj, Jelisaveta
Powiązania:
https://bibliotekanauki.pl/articles/2012230.pdf
Data publikacji:
2015-03-31
Wydawca:
Wydawnictwo Adam Marszałek
Tematy:
education
educational efficiency
perception
emotional status
Opis:
While searching for the ways of enhancing students’ educational efficiency, the authors set the framework for the issue from two perspectives-educational and emotional, stressing the existence of a strong interdependence between emotional and cognitive ones. The focus of study is students’ perception of educational processes, the emotional states they demonstrate and their interdependence. For the purpose of this research a battery of questionnaires was constructed and the results have shown that students’ emotional states greatly influence their perception of educational efficiency. Based on these results, the recommendation on modifying the management of educational processes is that students’ emotional states should not be excluded from the equation of a successful education. The factors that shape the emotional context of learning should be taken into account.
Źródło:
The New Educational Review; 2015, 39; 153-164
1732-6729
Pojawia się w:
The New Educational Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Radon and thoron exhalation rate measurements from building materials used in Serbia
Autorzy:
Čeliković, Igor T.
Pantelić, Gordana K.
Živanović, Miloš Z.
Vukanac, Ivana S.
Krneta Nikolić, Jelena D.
Kandić, Aleksandar B.
Lončar, Boris B.
Powiązania:
https://bibliotekanauki.pl/articles/148848.pdf
Data publikacji:
2020
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
air exchange rate
building materials
radon exhalation rate
Opis:
The second most important source of indoor radon, after soil beneath dwelling, is building material. With the increase in environmental awareness and new energy-saving policies, residents tend to replace the existing windows with tighter windows, which leads to a decrease in air exchange rate and consequently an increase in indoor radon concentration. In case of low exchange rates, dose caused by inhalation of radon and its progeny can exceed external dose originating from the radium content in the surrounding building material. In this paper, surface exhalation rates of radon (222Rn) and thoron (220Rn) from typical building materials used for construction and interior decoration of houses in Serbia were investigated. Surface exhalation rate measurements were performed using the closed-chamber method, while concentrations of radon and thoron in the chamber were continuously measured using an active device, RTM1688-2, produced by SARAD® GmbH. Finally, the impact of the replacement of windows on the indoor radon concentration was estimated.
Źródło:
Nukleonika; 2020, 65, 2; 111-114
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

    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