Wydanie 290(20) 2011

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https://oa.zut.edu.pl/handle/20.500.12539/747

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Przeglądaj Wydanie 290(20) 2011 wg Temat "Dyscyplina::Nauki inżynieryjno-techniczne::inżynieria środowiska, górnictwo i energetyka"

Teraz wyświetlane 1 - 3 z 3
  • Miniatura
    PozycjaOpen Access
    Model wykorzystania energetyki odnawialnej we współdziałaniu systemu miejskiego i wiejskiego na przykładzie biomasy
    (Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2011) Wiktorowski, Krzysztof; Katedra Ekonomii, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie
    This article presents a model renewable energy use system in conjuction urban and rurar example of biomass. Biomass is a product produced in large quantities by agriculture and can be successfully used to produce renewable energy. Later in the paper presented to the model of farm production structures to take account of both the production of conventional food, as I biomass for energy purposes. According to the author diversification of agricultural production by expanding the production of biomass is one of the requirements of the current situation in agricultural markets.
  • Miniatura
    PozycjaOpen Access
    Właściwości luminescencyjne ekstraktów alkalicznych substancji humusowych otrzymanych z nadkładów materiału ziemnego zastosowanych na modelu rekultywacyjnym znajdującym się na terenie zakładów elektrowni „Dolna Odra” są w Nowym Czarnowie
    (Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2011) Mielnik, Lilia; Katedra Fizyki i Agrofizyki, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie
    Research was conducted on selected attempts to overlayers obtained from natural material used on experimental plots at the site of the Power Plant Dolna Odra SA in Nowe Czarnowo. In attempts of overlayers to determine the content of Corg and Ntot. Humic substances (HS) were extracted with a solution of 0.1 M NaOH. As a measure of organic matter content in the obtained extracts were Corg content in them. Photoinduced luminescence (FL) of humic substances was induced with a halogen light of 1000 to 5000 [µmol ⋅ m–2 ⋅ s–1] photon flux density. The FL intensity was recorded within the wavelength range of 400 to 600 nm, and within the time range of 0.15 s to 0.55 s after excitation. It was found that the components included in the overlayers of respondents have a significant impact on their content of organic matter. Also obtained significant differences in the values of intensity of photoinduced luminescence of studied SH. The differences may be evidence of the variable quantitative and qualitative contribution of photoluminophors in the structure of the examined HA molecules, as well as of their different photochemical reactivity.
  • Miniatura
    PozycjaOpen Access
    Zmienność opadów atmosferycznych w Szczecinie w cyklu rocznym w latach 1991–2000
    (Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2011) Gregorczyk, Andrzej; Michalska, Bożena; Katedra Agronomii, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Katedra Meteorologii i Klimatologii, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie
    The aim of this study was statistical description of the rainfall changes in the vicinity of Szczecin in the years 1991–2000 and approximation of daily rainfall using the harmonic and polynomial functions. On the basis of original data, mean values of monthly rainfall and their standard deviations were shown. Mean annual rainfall amounts (total precipitation) in the studied decade (10 years) equaled 575 mm. The highest mean monthly rainfall was in July (76.3 mm), and the smallest – in October (32.7 mm). From both the mathematical models of daily rainfall as a function of day number of year more adequate was four-order polynomial (determination coefficient R2 = 0.822). There has been attempt to model the distribution of the rainy days number in selected 30-day month using the theoretical binomial distribution.