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    Wyświetlanie 1-2 z 2
    Tytuł:
    Variability and temporal structure of concentrations of carbon monoxide in Poznan (central-western Poland)
    Autorzy:
    Kalbarczyk, E.
    Kalbarczyk, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1190148.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
    Tematy:
    gas pollution
    meteorological factor
    weekday
    Wielkopolska region
    Opis:
    Carbon monoxide, in addition to CO2 and CH4, constitutes the largest source of carbon in the atmosphere and. by reacting with the hydroxyradical OH, it indirectly contributes to the increase in the concentration of methane and ozone in the atmosphere. The aim of the study was to determine the temporal variation of CO concentrations and its dependence on the weather course in an urban area situated in Wielkopolska, a region in central-western Poland. The research used data from the State Environmental Monitoring Station in the north-western part of Poznań (Hs = 84 m above sea level) in the immediate vicinity of a residential and recreational area. The data included hourly concentrations of CO and hourly values of atmospheric pressure, air temperature, total solar radiation, relative air humidity and wind velocity in 2005-2014. To measure the concentration of carbon monoxide, a Horiba APMA 360 analyzer and TELEDYNE API T400 were used. The measurement method was infrared spectroscopy. The time distribution of CO concentrations was considered by years, half years, months and hours. Relationships between the analyzed variables were confirmed using the Spearman’s correlation coefficient at the level of p ≤ 0.01. It was found that in the years of research the average concentration of CO in central-western Poland had a negative trend, as well as higher values in the heating season than in the warm half of year, and on week days than at weekends. Two concentration maxima, morning and evening ones, both in warm and cool half-year and on working days, were observed. On non-working days, there was one evening maximum. The variability of CO was mostly affected by air temperature (rs = -0.45) and solar radiation (rs = 0.32). The highest concentrations of CO were accompanied by the lowest values of solar radiation, air temperature and wind velocity, and highest values of the atmospheric pressure, as well as higher than average relative air humidity.
    Źródło:
    Journal of Elementology; 2017, 22, 2; 697-711
    1644-2296
    Pojawia się w:
    Journal of Elementology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Weekday and weekend moderate to vigorous physical activity of young musicians in the context of public health recommendations.
    Autorzy:
    Nawrocka, A.
    Mynarski, W.
    Grabara, M.
    Powerska-Didkowska, A.
    Borek, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/51601.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Medycyny Wsi
    Opis:
    Introduction: Physical activity is very important for the proper mental and physical development of children and youths, especially for the development of the locomotor system. The students of music schools are a unique group of children and youths, because of specific loads on the organs of locomotion, associated with the playing of musical instruments. They can therefore be exposed to a variety of health problems, particularly in the case of insufficient physical activity. Objective: The aim of the presented study was to assess the level of physical activity of music schools’ students on weekdays and weekends against the parameters of physical efforts beneficial to health. Method and materials: The study involved 225 musicians from the Katowice School of Music, Complex of I and II degrees, aged 10–18 years(138 girls and 87 boys). The level of physical activity was assessed on the basis of moderate to vigorous rates (MVPA). Results: Both on weekdays as well as at the weekends, boys presented a higher level of physical activity of at least moderate intensity (MVPA), which also resulted in a greater total weekly pro-health physical activity. Both boys and girls dedicated significantly more time to beneficial pro-health efforts physical health at weekends (p<0.01). The percentage of young musicians who meet accepted (in this study) standards for the optimal amount of physical activity in both groups was dramatically low (3.6% of girls and 11.5% of boys). Conclusion: Both boys and girls from the music schools often undertake moderate to vigorous physical activity (MVPA) at the weekends. The boys more often than the girls made pro-health physical efforts of moderate and high intensity.
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2013, 20, 3
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-2 z 2

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