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    Wyświetlanie 1-4 z 4
    Tytuł:
    Caffeine degradation in water by gamma irradiation, ozonation and ozonation/gamma irradiation
    Autorzy:
    Torun, M.
    Abbasova, D.
    Şolpan, D.
    Güven, O.
    Powiązania:
    https://bibliotekanauki.pl/articles/146514.pdf
    Data publikacji:
    2014
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    caffeine
    effect of ozone
    radiolytic decomposition
    advanced oxidation process (AOPs)
    caffeine decomposition
    COD change
    Opis:
    Aqueous solutions of caffeine were treated with ozone and gamma irradiation. The amounts of remaining caffeine were determined after solid phase extraction as a function of absorbed dose and ozonation time. In addition to this, some important parameters such as inorganic ions, chemical oxygen demand (COD) dissolved oxygen and total acidity changes were followed. Caffeine (50 ppm) is found to be completely decomposed at 3.0 kGy and 1.2 kGy doses in the absence of H2O2 and in 1.20 mM H2O2 solutions, respectively. In the case of gamma irradiation after ozonation, 50 ppm caffeine was removed at 0.2 kGy when the solution was ozonized for 100 s at a rate of 10 g O3 h–1 in 400 mL 50 ppm paracetamol solution.
    Źródło:
    Nukleonika; 2014, 59, 1; 25-35
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Acoustical estimation of fish distribution and abundance in two Spitsbergen fjords
    Autorzy:
    Szczucka, J.
    Hoppe, L.
    Schmidt, B.
    Fey, D.P.
    Powiązania:
    https://bibliotekanauki.pl/articles/47822.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    Arctic region
    fish
    cod
    Gadus morhua
    Norway haddock
    Melanogrammus aeglefinus
    fish distribution
    fish abundance
    acoustics
    climate change
    global warming
    Spitsbergen fjord
    Opis:
    Over recent decades, the Arctic region has been subjected to rapid climate change stemming from global warming. The advance of Atlantic waters to high latitudes is notable. The increased abundance of fish, such as cod (Gadus morhua) and haddock (Melanogrammus aeglefinus), has been reported near the western coast of Spitsbergen and entering fjords together with Atlantic waters. This study used multifrequency acoustics to measure fish distribution and abundance in 2013–2014 in two Arctic fjords, the colder Hornsund, which is typically of Arctic character, and the warmer Kongsfjorden, which is more of Atlantic character. The study revealed a bimodal fish size distribution with larger fish in the deep parts of fjords, and smaller fish distributed in more shallow waters. An evident increase in the abundance of large fish, most probably Atlantic cod, was observed in Hornsund and especially in Kongsfjorden in 2014 in comparison to 2013. The intense inflow of Atlantic water on the shelf in 2014 is suggested as the explanation for this phenomenon.
    Źródło:
    Oceanologia; 2017, 59, 4
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Spanish cod fishing industry: Radical production changes without significant changes in the innovation system
    Autorzy:
    González-López, Manuel
    Powiązania:
    https://bibliotekanauki.pl/articles/474976.pdf
    Data publikacji:
    2012
    Wydawca:
    Fundacja Upowszechniająca Wiedzę i Naukę Cognitione
    Tematy:
    institutions
    innovation
    innovation systems
    cod fishing
    change
    Opis:
    This paper studies the changes which have occurred in the Spanish cod fishing industry in the last few years. We also aim to understand the dynamics of industrial change and its relation to institutions, understood here as both formal and informal rules and conventions. Our results suggest that sometimes industries, in order to maintain their competitive position, need something more than incremental changes in their products or in the technologies that they use. As we can see with the Spanish cod fishing industry, major changes are needed which affect the institutional set-up of their production system. Nevertheless, even when major changes happen in the production sphere, this does not mean that major alterations happen in the way companies innovate, i.e. in their innovation system.
    Źródło:
    Journal of Entrepreneurship, Management and Innovation; 2012, 8, 4; 35-51
    2299-7075
    2299-7326
    Pojawia się w:
    Journal of Entrepreneurship, Management and Innovation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of power on agility, linear speed and change of direction deficit in female soccer players
    Autorzy:
    Fischerova, Patricia
    Krosta, Roksana
    Gołaś, Artur
    Terbalyan, Artur
    Nitychoruk, Magdalena
    Maszczyk, Adam
    Powiązania:
    https://bibliotekanauki.pl/articles/1933017.pdf
    Data publikacji:
    2021-06-23
    Wydawca:
    PPHU Projack Jacek Wąsik
    Tematy:
    COD deficit
    change of direction
    power
    strength
    agility
    straight linear speed
    soccer
    female
    peak power
    Opis:
    Introduction: The aim of the study was to examine relationships between power of the lower limb and agility, speed, and change of direction (COD) deficit in professional female soccer players. Material and methods: Thirty-three elite Polish Extraliga league soccer players (aged 22 ±5 years; body height 166 ± 4 cm; body weight 58 ± 8 kg) performed the following fitness tests: lower limb muscle power (Leg Press, Half Squat, Counter Movement Jump), straight linear speed (SLS 20 m), and COD speed ( Zig-Zag test, COD deficit). Using the median value as a reference, the players were subdivided into two groups (n=17; n=16) according to their LP, HS 60% 1RM, CMJ (High values below median = stronger group and Low = weaker group ). Results: The COD deficit was calculated as the difference between the 20m speed and the Zig-Zag test. The stronger group was better than the weaker group in SLS 20m (p<0.05; ES=1.23; 0.83; 0.93), but in the Zig-Zag agility test, the difference in the results was not statistically significant (p>0.05; ES=0.48; 0.34; 0.34) and this affected the COD deficit, which was higher (p<0.05; ES=0.9; 0.73; 0.72). The most important finding was that the stronger group had a higher COD deficit and its improvement (reduction) occurs only if the results of the agility test are improved (through agility training) [Ydeficit All groups=0.10+0.87* 20m - 0.83* Zig-Zag]. Increasing power (HS, LP) lead to the improvement in SLS p<0.05, not to COD abilities. Conclusion: This can be useful for coaches during agility training and to improve COD deficit in soccer players and women in general.
    Źródło:
    Physical Activity Review; 2021, 1, 9; 109-116
    2300-5076
    Pojawia się w:
    Physical Activity Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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