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    Wyświetlanie 1-8 z 8
    Tytuł:
    Comparison of the burial rate estimation methods of organic and inorganic carbon and quantification of carbon burial in two high Arctic fjords
    Autorzy:
    Koziorowska, K.
    Kulinski, K.
    Pempkowiak, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/47711.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    organic carbon
    inorganic carbon
    marine sediment
    pore water
    Arctic fjord
    surface sediment
    primary production
    absorption spectrum
    Źródło:
    Oceanologia; 2018, 60, 3
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Deposition, return flux, and burial rates of nitrogen and phosphorus in the sediments of two high-Arctic fjords
    Autorzy:
    Koziorowska, K.
    Kulinski, K.
    Pempkowiak, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/48289.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    nitrogen
    phosphorus
    sediment
    Hornsund region
    Kongsfjorden
    water column
    pore water
    nutrient concentration
    Arctic fjord
    Źródło:
    Oceanologia; 2018, 60, 4
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Diurnal and seasonal DOC and POC variability in the land-locked sea
    Autorzy:
    Szymczycha, B.
    Winogradow, A.
    Kulinski, K.
    Koziorowska, K.
    Pempkowiak, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/48956.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    marine environment
    organic matter
    seasonal change
    diurnal change
    particulate organic carbon
    dissolved organic carbon
    chlorophyll a
    salinity
    pH
    temperature
    Baltic Sea
    Opis:
    Organic matter is a minor yet important component of the marine environment. The aim of this study was to investigate the diurnal and seasonal changes in dissolved and particulate organic carbon (DOC and POC, respectively). Thus, DOC and POC as well as chlorophyll a (Chl a), δ13C, NO3−, NO2−, NH4+, PO43−, salinity, pH, and temperature were regularly measured in samples collected for 24 h (2-h resolution) in the Gdańsk Deep (54°44.730′N, 19°08.531′E) at three water depths (1, 10, and 40 m) during sampling campaigns in 2011 (May), 2014 (May), and 2015 (January, March, May, July, September, November). Seasonal variations in DOC and POC followed the seasonality of Chl a (proportional trend) and nutrients (reverse trend) concentrations. Diurnal oscillations were detected in six out of the eight measurement series. The strongest diurnal variability in both POC and DOC occurred in May 2011 and March 2015, when phytoplankton activity was highest (high Chl a). The surprisingly low δ13C values (range: −28‰ to −24‰) measured over the course of the study revealed the gaps in our knowledge of the isotopic characteristics of terrestrial- vs. marine-derived particulate organic matter.
    Źródło:
    Oceanologia; 2017, 59, 3
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Acrosin system of dog spermatozoa and reproductive tract secretions
    Autorzy:
    Strzezek, R
    Koziorowska-Gilun, M.
    Filipowicz, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/32251.pdf
    Data publikacji:
    2010
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    dog
    semen
    proacrosin
    acrosin
    spermatozoon
    sperm-rich fraction
    whole ejaculate
    antitrypsin activity
    antitrypsin inhibitor
    seminal plasma
    ejaculate
    Beagle dog
    mixed breed
    Opis:
    The aim of this study was to determine the activity of proacrosin and acrosin in spermatozoa originating from the sperm-rich fractions (SRF) and whole ejaculates (WE) of dog semen. In addition, experiments were conducted to determine the activity of antitrypsin inhibitors in the fluids of different ejaculate fractions and whole seminal plasma. Ejaculates were collected from five dogs of mixed breed and one Beagle dog (aged from 2 to 9 years). In the SRF, it was confirmed that the activity of the free acrosin form was predominant (acrosin / proacrosin; 2.38 ± 0.22 / 1.05 ± 0.08 mIU / 106 spermatozoa). On the other hand, spermatozoa originating from the WE exhibited significantly higher (p<0.05) proacrosin activity (proacrosin / acrosin; 2.19 ± 0.19 /1.30 ± 0.11 mIU / 106 spermatozoa). Furthermore, acrosin inhibitor activity was lower in the fluids of the pre-sperm fraction (0.09 ± 0.006 IU / cm3), whereas it was higher in the fluids of the post-sperm fraction (0.11 ± 0.007 IU / cm3). Using PAGE analysis, the antitrypsin activity of the enzyme was represented by the presence of one electrophoretic band in the fluids of the pre-sperm and post-sperm fractions and whole seminal plasma. Furthermore, two electrophoretic bands were detected in the fluids of the SRF. The findings of this study indicate that specific proteinase inhibitors present in the individual ejaculate fractions of dog semen may act by stabilizing the sperm acrosin system.
    Źródło:
    Polish Journal of Veterinary Sciences; 2010, 13, 1; 69-73
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of dialysis of dog semen on sperm characteristics and some biochemical components of seminal plasma
    Autorzy:
    Strzezek, R.
    Koziorowska-Gilun, M.
    Kielczewski, K.
    Kordan, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/30592.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Opis:
    The aim of this study was to investigate the effect of dog semen dialysis on sperm characteristics and some biochemical components of seminal plasma. Whole ejaculates were dialyzed against Triscitrate-fructose extender for a 5 h period at room temperature (using semi-permeable cellulose tubing of 12-14 kDa molecular weight cut-off). It has been demonstrated that the long-term dialysis of dog semen causes a significant decrease in sperm quality parameters and disrupts the biochemical properties of seminal plasma. This procedure requires further improvement.
    Źródło:
    Polish Journal of Veterinary Sciences; 2015, 18, 2
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of boar ejaculate fraction, extender type and time of storage on quality of spermatozoa
    Autorzy:
    Dziekonska, A.
    Swiader, K.
    Koziorowska-Gilun, M.
    Mietelska, K.
    Zasiadczyk, L.
    Kordan, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/32526.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Opis:
    The aim of this study was to investigate the effect the sperm-rich fraction (F1) and the post-F1 fraction (F2) on the quality of boar spermatozoa stored in a liquid state. Ejaculates were collected from three Polish Landrace boars. Each ejaculate fraction was diluted with BTS short-term extender and Safe-Cell Plus (SCP) long-term extender and stored for seven days (D1-D7) at 17°C. Analyses included sperm motility parameters, normal apical ridge (NAR) acrosomes and plasma membrane integrity (PMI). Prior to the dilution of fractions, marked changes (p<0.05) were noted between F1 and F2 in progressive motility (PMOT), velocity average pathway (VAP) and velocity straight line (VCL). After the ejaculate was diluted, the type of fraction and type of extender significantly affected (p<0.05) PMOT, being markedly higher (p<0.05) for F1 extended in BTS. No marked changes (p<0.05) were observed between F1 and F2 extended in SCP for any of the analyzed sperm quality parameters during seven days of storage. Significantly higher (p<0.05) values of sperm quality parameters were noted in F1 compared with F2 for BTS on D7 of storage. The results of the four-way ANOVA analysis indicate that boar, fraction of ejaculate, extender type and day of storage had significant effects on the quality of boar stored spermatozoa. The F1 was characterised by higher quality of spermatozoa during storage in comparison with F2 in the short-term extender. Using the long-term extender containing the proteins allowed for a better application of F2, which could be important for the pig industry.
    Źródło:
    Polish Journal of Veterinary Sciences; 2017, 20, 1
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Electromagnetic field of extremely low frequency has an impact on selected chemical components of the honeybee
    Autorzy:
    Koziorowska, A.
    Depciuch, J.
    Białek, J.
    Woś, I.
    Kozioł, K.
    Sadło, S.
    Piechowicz, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087262.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Apis mellifera
    ELF-EMF
    FTIR
    spectra analysis
    body chemical composition
    Źródło:
    Polish Journal of Veterinary Sciences; 2020, 23, 4; 537-544
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Endogenous carbon monoxide (CO) as a modulating factor of molecular biological clock in the hypothalamic structures involved in light transmission in pig and wild boar hybrid during long and short day season
    Autorzy:
    Gilun, P.
    Koziorowska-Gilun, M.
    Wąsowska, B.
    Sowa-Kućma, M.
    Kozioł, K.
    Romerowicz-Misielak, M.
    Kordan, W.
    Koziorowski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/16647460.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    carbon monoxide
    humoral pathway
    light
    master biological clock
    seasonal
    Opis:
    Mature males of a wild boar-pig crossbreed, during the long and short day season, were used for the study which demonstrates that the chemical light carrier CO regulates the expression of biological clock genes in the hypothalamus via humoral pathways. Autologous blood with experimentally elevated concentrations of endogenous CO (using lamps with white light-emitting diodes) was infused into the ophthalmic venous sinus via the right dorsal nasal vein. Molecular biology methods: qPCR and Western Blot were used to determine the expression of genes and biological clock proteins. The results showed that elevated endogenous CO levels, through blood irradiation, induces changes in genes expression involved in the functioning of the main biological clock located in suprachiasmatic nuclei. Changes in the expression of the transcription factors Bmal1, Clock and Npas2 have a similar pattern in both structures, where a very large decrease in gene expression was shown after exposure to elevated endogenous CO levels. The changes in the gene expression of PER 1-2, CRY 1-2, and REV-ERB α-β and ROR β are not the same for both POA and DH hypothalamic structures, indicating that both structures respond differently to the humoral signal received. The results indicate that CO is a chemical light molecule whose production in an organism depends on the amount of light. An adequate amount of light is an essential factor for the proper functioning of the main biological clock.
    Źródło:
    Polish Journal of Veterinary Sciences; 2023, 26, 1; 65-82
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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