Wydanie 293(21) 2012

Stały URI dla kolekcji

https://oa.zut.edu.pl/handle/20.500.12539/745

Przeglądaj

Przeglądaj Wydanie 293(21) 2012 wg Autor "Gregorczyk, Andrzej"

Teraz wyświetlane 1 - 2 z 2
  • Miniatura
    PozycjaOpen Access
    Porównanie wybranych kinetycznych modeli zanikania herbicydów w glebie
    (Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2012) Gregorczyk, Andrzej; Swarcewicz, Maria; Katedra Agronomii, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Zakład Syntezy Organicznej i Technologii Leków, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie
    The aim of the paper was to used of three types of mathematical function: the single first-order degradation kinetics (SFO), Gustafson and Holden model (FOMC) and the simple linear bi-phase model, for quantification of the fate of pesticides in soil. For instance data from laboratory study of dissipation of atrazine in soil was used. Numerical methods using for estimate of structural coefficients of degradation models of this herbicide. For every models assessed the values of 50, 90 and 100% dissipation time of substance active. Mathematical equations and figures of first derivative of functions were presented as the analysis of atrazine degradation process. Accomplishment of estimate adequately of using models. To the last degree of the kinetics criterions of degradation of substance active and the statistics criterions make good the Gustafson and Holden model. In this work find that analysis of degradation rate is valuable of study integration of kinetics degradation herbicides in soil.
  • Miniatura
    PozycjaOpen Access
    Wykorzystanie biomasy rdestowca ostrokończystego (Polygonum cuspidatum Siebold & Zucc.) do celów energetycznych
    (Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2012) Gregorczyk, Andrzej; Wereszczaka, Jacek; Stankowski, Sławomir; Katedra Agronomii, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Katedra Agronomii, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie; Katedra Agronomii, Zachodniopomorski Uniwersytet Technologiczny w Szczecinie
    In the field experiment conducted in 2006–2008 years, the influence of harvest number (one or two) and levels of nitrogen initial fertilization: (25, 50, 75, 100 kg N · ha–1 ) on dry matter, calorific value, and ash of the Japanese knotweed plants was estimated. The energetic effectiveness index was calculated, also. Application of initial nitrogen doses had no significant effect on final dry matter yields of plants. Planning multi-year utilization of knotweed as a renewable source of energy one harvest during autumn- winter time seemed to be best. High biomass yields of Japanese knotweed (mean 9.84 t · ha–1) and great calorific value (16–17 MJ · kg–1), indicate that is a possibility for utilization this plant as an energetic plant (Ee = 8.27).