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Wyszukujesz frazę "Szczecinska, M." wg kryterium: Autor


Wyświetlanie 1-4 z 4
Tytuł:
A comparison of PCR-based markers for the molecular identification of Sphagnum species of the section Acutifolia
Autorzy:
Sawicki, J.
Szczecinska, M.
Powiązania:
https://bibliotekanauki.pl/articles/57748.pdf
Data publikacji:
2011
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
Acutifolia
random amplified polymorphic DNA
Sphagnum
genetic similarity
molecular identification
molecular marker
polymerase chain reaction
genetic relationship
species identification
peat moss
chloroplast
nuclear genome
Opis:
RAPDs, ISJs, ISSRs, ITS and katGs were applied to determine genetic relationships between common Sphagnum species of the section Acutifolia. Twenty populations were genotyped using ten ISJ primers, 12 pairs of katG primers, 10 ISSR and 10 RAPD primers, and a restriction analysis of ITS1 and ITS2. ISSR and katG markers revealed the greatest number of species-specific bands. An analysis of ITS1 and ITS2 regions with restriction enzymes also proved to be a highly effective tool for species identification.
Źródło:
Acta Societatis Botanicorum Poloniae; 2011, 80, 3
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Genetic variation of the relict and endangered population of Chamaedaphne calyculata (Ericaceae) in Poland
Autorzy:
Szczecinska, M
Sawicki, J.
Wasowicz, K.
Holdynski, C.
Powiązania:
https://bibliotekanauki.pl/articles/41179.pdf
Data publikacji:
2009
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
plant species
rare species
Polska
endangered population
relict population
genetic variation
Chamaedaphne calyculata
Ericaceae
genetic diversity
conservation
geographic distribution
Opis:
Chamaedaphne calyculata is rare and endangerded species of Polish flora. The genetic variation within and among ten polish population of leatherleaf was analysed by ISSR and ISJ markers. The analysis revealed a total of 160loci with an average of 13.3 bands per primer. We expected a low level of genetic diversity of this narrowly distributed species in Poland, but our results indicate that Ch. calyculata revealed a high level of genetic diversity at species level (P=88.7%of polymorphic loci, AE=1.468, HE=0.290). At the population level, the variation of Ch. calyculata was significantly lower (P=27.6%, AE=1.140, HE=0.098). There was significant correlation between ecological properties (population size; number of flowering ramets) and genetic diversity parameters. Analysis of molecular variance showed that most of variation (62%) in Ch. calyculata occurred among population. Gene flow (Nm) between the ten studied populations, determined based on the GST index, was very low at 0.239. It indicated that the fragmentation and isolation of populations might result from specific evolutionary history of this plant and postglacial recolonization
Źródło:
Dendrobiology; 2009, 62; 23-33
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Workers’ Active Involvement in the Improvement of Occupational Safety and Health in a Textile Enterprise—A Case Study
Autorzy:
Milczarek, M.
Szczecińska, K.
Powiązania:
https://bibliotekanauki.pl/articles/90677.pdf
Data publikacji:
2006
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
safety management
workers’ involvement
occupational risk
bezpieczeństwo pracy
bezpieczeństwo i higiena pracy
warunki pracy
czynniki ryzyka
Opis:
Part of the Polish-Swedish OSHMAN project was carried out in a textile company. It aimed at implementing and improving effective health and safety management with workers’ active involvement at all levels of the enterprise. The two main problems to be solved during the project were decreasing occupational risk and improving workers’ poor knowledge on occupational risk. Training courses, workshops and practical activities were undertaken. As expected, there were changes in work organisation and improvement in the way workstations were looked after, which led to a decrease in occupational risk. Workers were highly committed during the project. Nevertheless it seems that more training should be directed at middle management.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2006, 12, 1; 69-77
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The photoluminescent layers based on ZnO nanoparticles as radiation converters in photovoltaic applications
Autorzy:
Szczecińska, N.
Znajdek, K.
Sosna-Głębska, A.
Lewicki, P.
Czarnecki, P.
Kraska, P.
Bazdyga, C.
Wiosna-Sałyga, G.
Sibiński, M.
Powiązania:
https://bibliotekanauki.pl/articles/105700.pdf
Data publikacji:
2018
Wydawca:
Centrum Badań i Innowacji Pro-Akademia
Tematy:
down-conversion layers
down-shifting layers
photoluminescence nanoparticles
solar cells efficiency
zinc oxide nanoparticles
photoluminescence layers
nanocząstki fotoluminescencji
efektywność ogniw słonecznych
nanocząsteczki tlenku cynku
warstwy fotoluminescencyjne
Opis:
The mismatch between solar cell response and solar spectrum is one of the biggest challenges to achieve high efficiency in photovoltaic cells. There are a few different approaches to minimise this concern. One of them is the radiation conversion which may be due to three different processes, namely up-conversion, down conversion and down-shifting. In this paper the down-conversion process of zinc oxide nanoparticles (ZnO NPs) and layers with ZnO NPs in polymer (poly (methyl methacrylate)) (PMMA) matrix will be analysed. ZnO NPs are prone to act as down-converting or down-shifting agents, which absorb the UV radiation, which is not absorbed by the solar cell, and then re-emit light in the visible range, which is suited to the photovoltaic cell sensitivity. Herein, the photoluminescence and optical transmittance of ZnO NPs and layers based on ZnO NPs will be presented. These parameters have a large influence on the potential application of these layers in photovoltaic structures for increased efficiency. The conversion layers have to fulfil the following conditions: have good optical transmittance in the visible range and high luminescence efficiency in converting UV radiation into visible. The paper focuses on finding the balance between these parameters.
Źródło:
Acta Innovations; 2018, 29; 16-26
2300-5599
Pojawia się w:
Acta Innovations
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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