12 research outputs found
Study of the structure, prooxidative, and cytotoxic activity of some chelate copper(II) complexes
Cytogenetic analysis of structural rearrangements in three varieties of common wheat, Triticum aestivum
Asynchronous synthesis method of waterborne polyurethane with the differences of structural features and thermal conductivity
Microbial Characterisation of the Sava River
Data on the microbiological quality of the freshwater systems under the anthropogenic influence, such as the Sava River, are of the major importance for the water resource management. Furthermore, analyses of the microbial quality of fish meat provide information of the fish as a valuable food resource from the investigated river basin. The health status of the fish, including dynamics of infection and biodiversity of endoparasites, is important bioindicator of changes in the ecosystem structure and function. For the ecosystem-based approach to the Sava River management, investigations of microbiological quality of the Sava River water and the meat of the European chub as the bioindicator organism, as well as dynamics of infection/biodiversity of intestinal parasites Acanthocephala, were performed. The survey comprised the data collected in periods 2005, 2006 and 2012. Microbiological investigation of water was performed in 2006 and 2012, while microbiological analyses of fish meat and ichthyo-parasitological investigation took place during 2005–2006. A high number of heterotrophic bacteria were recorded during 2006 survey, confirmed by the distinctly higher values of the three faecal indicators (total coliform, E. coli and enterococci), and indicated poor water quality downstream of the cities Zagreb and Velika Gorica, as a result of the municipal sewage outlets. The results from 2012 survey indicated the existence of moderate to critical faecal and organic pollution in all samples. Accumulation of the bacteria in the European chub meat was mainly uniform along the watercourse within standards and limitations for the human consumption. Sampling sites downstream cities of Zagreb and Velika Gorica were characterised with the lower prevalence and abundance of two common species of the chub intestinal acanthocephalan parasites, Pomphorhynchus laevis and Acanthocephalus anguillae. Poor microbiological quality of the water and lower distribution of chub intestinal parasites were related to the anthropogenic influence, downstream of the urban areas.Milačić R, Ščančar J, Paunović M, editors. The Sava River. Berlin, Heidelberg: Springer-Verlag; 2015. p 201-28
Alpine thermal events in the central Serbo‑Macedonian Massif (southeastern Serbia)
The Serbo-Macedonian Massif (SMM) represents a crystalline belt situated between the two diverging branches of the Eastern Mediterranean Alpine orogenic system, the northeast-vergent Carpatho-Balkanides and the southwest-vergent Dinarides and the Hellenides. We have applied fission-track analysis on apatites and zircons, coupled with structural field observations in order to reveal the low-temperature evolution of the SMM. Additionally, the age and geochemistry of the Palaeogene igneous rocks (i.e. Surdulica granodiorite and dacitic volcanic rocks) were determined by the LA-ICPMS U–Pb geochronology of zircons and geochemical analysis of main and trace elements in whole-rock samples. Three major cooling stages have been distinguished from the late Early Cretaceous to the Oligocene. The first stage represents rapid cooling through the partial annealing zones of zircon and apatite (300–60 °C) during the late Early to early Late Cretaceous (ca. 110–ca. 90 Ma). It is related to a post-orogenic extension following the regional nappe-stacking event in the Early Cretaceous. Middle to late Eocene (ca. 48–ca. 39 Ma) cooling is related to the formation of the Crnook–Osogovo–Lisets extensional dome and its exhumation along low-angle normal faults. The third event is related to regional cooling following the late Eocene magmatic pulse. During this pulse, the areas surrounding the Surdulica granodiorite (36 ± 1 Ma) and the slightly younger volcanic bodies (ca. 35 Ma) have reached temperatures higher than the apatite closure temperature (120 °C) but lower than ca. 250 °C. The geochemistry of the igneous samples reveals late- to post-orogenic tectonic setting during magma generation