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

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    Wyświetlanie 1-5 z 5
    Tytuł:
    Okiem ryby - nowe spojrzenie na rozwój sieci neuronalnych i choroby neurorozwojowe
    Autorzy:
    Kedra, M.
    Jaworski, J.
    Zmorzynska, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/848821.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Przyrodników im. Kopernika
    Tematy:
    neurony
    sieci neuronowe
    choroby neurorozwojowe
    badania modelowe
    organizmy modelowe
    danio pregowany
    Danio rerio
    oko
    siatkowka [anat.]
    Źródło:
    Wszechświat; 2016, 117, 10-12
    0043-9592
    Pojawia się w:
    Wszechświat
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Epibenthic diversity and productivity on a heavily trawled Barents Sea bank (Tromsoflaket)
    Autorzy:
    Kedra, M.
    Renaud, P.E.
    Andrade, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/49128.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    epibenthic diversity
    Barents Sea
    ecosystem
    benthic community
    secondary production
    epifaunal organism
    sponge
    trawled area
    Opis:
    Shallow Arctic banks have been observed to harbour rich communities of epifaunal organisms, but have not been well-studied with respect to composition or function due to sampling challenges. In order to determine how these banks function in the Barents Sea ecosystem, we used a combination of video and trawl/dredge sampling at several locations on a heavily trawled bank, Tromsøflaket — located at the southwestern entrance to the Barents Sea. We describe components of the benthic community, and calculate secondary production of dominant epifaunal organisms. Forty-six epibenthic taxa were identified, and sponges were a significant part of the surveyed benthic communities. There were differences in diversity and production among areas, mainly related to the intensity of trawling activities. Gamma was the most diverse and productive area, with highest species abundance and biomass. Trawled areas had considerably lower species numbers, and significant differences in epifaunal abundance and biomass were found between all trawled and untrawled areas. Trawling seems to have an impact on the sponge communities: mean individual poriferan biomass was higher in untrawled areas, and, although poriferans were observed in areas subjected to more intensive trawling, they were at least five times less frequent than in untrawled areas.
    Źródło:
    Oceanologia; 2017, 59, 2
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The malacostracan fauna of two Arctic fjords (West Spitsbergen): the diversity and distribution patterns of its pelagic and benthic components
    Autorzy:
    Legezynska, J.
    Wlodarska-Kowalczuk, M.
    Gluchowska, M.
    Ormanczyk, M.
    Kedra, M.
    Weslawski, J.M.
    Powiązania:
    https://bibliotekanauki.pl/articles/48015.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    Malacostraca
    plankton
    glacial fjord
    Spitsbergen
    Kongsfjorden
    Hornsund Region
    Atlantic water
    diversity
    distribution
    Opis:
    This study examines the performance of pelagic and benthic Malacostraca in two glacial fjords of west Spitsbergen: Kongsfjorden, strongly influenced by warm Atlantic waters, and Hornsund which, because of the strong impact of the cold Sørkapp Current, has more of an Arctic character. The material was collected during 12 summer expeditions organized from 1997 to 2013. In all, 24 pelagic and 116 benthic taxa were recorded, most of them widely distributed Arctic-boreal species. The advection of different water masses from the shelf had a direct impact on the structure of the pelagic Malacostraca communities, resulting in the clear dominance of the sub-arctic hyperiid amphipod Themisto abyssorum in Kongsfjorden and the great abundance of Decapoda larvae in Hornsund. The taxonomic, functional and size compositions of the benthic malacostracan assemblages varied between the two fjords, and also between the glacier-proximate inner bays and the main fjord basins, as a result of the varying dominance patterns of the same assemblage of species. There was a significant drop in species richness in the strongly disturbed glacial bays of both fjords, but only in Hornsund was this accompanied by a significant decrease in density and diversity, probably due to greater isolation and poorer quality of sediment organic matter in its innermost basin. Our results suggest that the diversity and distribution of benthic malacostracans in these two fjords are only distantly related to the different hydrological regimes; rather, they are governed by locally acting factors, such as depth, sediment type, the variety of microhabitats and the availability and quality of food.
    Źródło:
    Oceanologia; 2017, 59, 4
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Urban vs. rural patients. Differences in stage and overall survival among patients treated surgically for lung cancer
    Autorzy:
    Rybojad, P.
    Dluski, D.
    Rybojad, B.
    Kedra, M.
    Sawicki, M.
    Skoczylas, P.
    Tabarkiewicz, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/49882.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Medycyny Wsi
    Opis:
    Introduction. Besides the undoubted influence of risk factors on morbidity and survival time, there are also other environmental factors, such as awareness of the prevalence of risk factors and the availability of modern diagnosis and treatment methods. Objective. To evaluate differences in lung cancer 5-year overall survival rates between urban and rural patients hospitalized in the Department of Thoracic Surgery of the Medical University in Lublin, Poland, and possible influence of several risk factors on these rates. Materials and methods. The analysis was based on 125 lung cancer patients who underwent surgical procedures in years 2006-2007 and who agreed to take part in the survey. The study aimed at recognition of the health situation and selected demographic traits of people who had been treated surgically for lung cancer. The differences were evaluated between rural and urban inhabitants in gender, age, lung function, smoking habits, exposure to risk factors at work, family history of cancer, staging of the disease, histological type of cancer, post-surgical treatment, and their possible influence on overall survival. Results. The results showed that the only noted differences between urban and rural population were in tobacco smoking and lung function. Survival rates were very similar and did not differ from the European average. Conclusions. The assumption that Polish rural patients are presenting with later cancer stages at the time of diagnosis, and have worse chances for survival, has become invalid in modern times.
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2013, 20, 1
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A huge biocatalytic filter in the centre of Barents Sea shelf?
    Autorzy:
    Weslawski, J.M.
    Kedra, M.
    Przytarska, J.
    Kotwicki, L.
    Ellingsen, I.
    Skardhamar, J.
    Renaud, P.
    Goszczko, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/48450.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    permeability sediment
    primary production
    Barents Sea
    organic carbon
    barnacle
    Balanus balanus
    mollusc
    Mya truncata
    Hiatella arctica
    Opis:
    A primary production model for the Barents Sea shows a hot spot of organic carbon settlement to the sea bed over 100 km long, a shallow pile of highly permeable sediments (mainly large Balanus, Mya and Pecten shell fragments over 1 cm in size) of glacial origin. Hydrodynamic flow models suggest an intensive, deep flow of near-bottom waters into the sediment. Depending on wave height, water in shallow (30 m depth) places may percolate more than 5 m into the sediment. During 10 days of stormy weather as much as 4 to 8 kg wet weight pelagic biomass can be processed per square metre through this extremely permeable sediment. Analogous processes known in coastal waters lead to intense biocatalytic phenomena and metabolism of organic carbon within the seabed, estimated here as more intense than surface consumption. Spitsbergenbanken may be acting as a huge sink for organic carbon and an important source of nutrients in one of the most productive areas of the North Atlantic.
    Źródło:
    Oceanologia; 2012, 54, 2
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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