Wydanie 290(20) 2011
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Pozycja Open Access Biologiczna aktywność gleby zanieczyszczonej antracenem(Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2011) Hawrot-Paw, Małgorzata; Ryłów, Małgorzata; Zakład Mikrobiologii i Biotechnologii Środowiska, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Zakład Mikrobiologii i Biotechnologii Środowiska, Zachodniopomorski Uniwersytet Technologiczny w SzczeciniePaper presents study results upon evaluating the influence of anthracene on the numbers of the three main taxonomic groups of soil microflora. Variable factors in the experiment was a dose of hydrocarbon, temperature and incubation time. It was found that the largest group of microorganisms in the studied soil were bacteria, actinomycetes was considerably less and fungi. Microorganisms showed different sensitivity to the presence of anthracene, which depended on the dose, and the impact this has changed with time. On the basis of average values for the whole period of incubation was found that a significant effect on the number of bacteria was dose 1000 mg · kg–1, for actinomyces, 100 and 1000 mg · kg–1 and for fungi 10 000 mg · kg–1. Higher temperatures caused a rise in the number of bacteria and the limited development of the actinomycetes and fungi.Pozycja Open 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 SzczecinieThis 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.Pozycja Open Access Porównanie wyników instrumentalnej i sensorycznej analizy tekstury wybranych gatunków serów(Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2011) Balejko, Jerzy A; Balejko, Edyta; Zakład Inżynierii Procesowej i Maszynoznawstwa, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Zakład Podstaw Żywienia Człowieka, Zachodniopomorski Uniwersytet Technologiczny w SzczecinieFor comparison of results of sensory and instrumental analysis, six kinds of fatty cheeses, of different hardness were subjected. Instrumental tests were carried out by the device in which viscoelastic materials were subjected to dynamic sinusoidal deformations (imitating the chewing process), letting for receiving stress as the relation of the time or the deformation. Statistical analysis of outcomes of the sensory assessment and results of the instrumental assessment showed a strong correlation between these results in case of measurements of the hardness (r = 0.84), springinesses (r = 0.75), guminess (r = 0.80) and chewiness (r = 0.84). The comparison between results of the sensory evaluation and instrumental assessment with use of the analysis of main components showed the strong positive correlation between hardness, springness and gumminess, and chewability, weaker positive correlation related to results of adhesiveness and cohesiveness.Pozycja Open Access Skład chemiczny i jakość białka konwencjonalnej i genetycznie zmodyfikowanej poekstrakcyjnej śruty sojowej(Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2011) Biel, Wioletta; Zakład Żywienia Zwierząt i Żywności, Zachodniopomorski Uniwersytet Technologiczny w SzczecinieThe aim of this study was estimation of composition and quality of protein of genetically-modified (GM) soybean meal studied in experiment on laboratory rats. No statistical differences were found in the results of chemical composition and nutritive value. A high content of exogenous amino acids was found. This was reflected in high nutritive value on the basic on CS, EAAI and predicted PER and BV. The final indicators of biological value (PER, BV and TD) were hight and did not differ statistically across GM soybean meal and non-modified and were similary with caseine. It was concluded that soybean meal produced from glyphosate-tolerant GM soybean (Roundup Ready) are nutritionally equivalent to conventional feed.Pozycja Open Access Stan i perspektywy rozwoju gospodarstw agroturystycznych w powiecie Drawskim(Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2011) Kalbarczyk, Eliza; Kamińska, Anna; Kalbarczyk, Robert; Zakład Meteorologii i Klimatologii, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Zakład Meteorologii i Klimatologii, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Zakład Meteorologii i Klimatologii, Zachodniopomorski Uniwersytet Technologiczny w SzczecinieThe study evaluated the offer and profitability of agritourism farms of the Drawsko district, defined both a typical recipient of an agritouristic offer and a farm owner. The study utilised the results of a survey conducted from June to August 2009 in 29 agritourism farms operating in four communes of the district. It was found that the offer of the majority of the agritourism farms in the district provides active leisure in rural area but do not ensure participation in the activities of a farm. It seems that attractions offered to children, who constitute a large group of tourists, are relatively scarce. A unique offer would make possible increasing competitiveness and profitability of an individual farm. The responses given by the owners of the farms confirmed the opinion that at present agritourism cannot be treated as a basic income source but as an extra source.Pozycja Open 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 SzczecinieResearch 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.Pozycja Open 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 SzczecinieThe 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.