Mineralogical and geochemical analytical approach to the characterization of pottery samples from an archaeological site near Mošnje (Slovenia) was conducted. The mineralogical, geochemical and statistical data confirmed the archaeologists´ hypothesis and interpretation of a similar origin / alteration of source material / probable local ceramic production for the majority of the pottery sherds; the imported origin of samples K3 and K13 was recognized, while sample K5 had been intentionally imported as a sample for comparative purposes.
F.27 Contribution to preserving/protecting natural and cultural heritage
COBISS.SI-ID: 1084766In case of foamed lightweight aggregates (LWA), porosity is introduced by the addition of a foaming agent to the glassy matrix, which degasses at an elevated temperature, so that the resulting gasses remain trapped inside the glassy structure. The efficiency of action of MnO2 as a foaming agent in wasteglass and waste glass / silica mud systems was studied. Samples were fired at different temperatures and with different dwelling times at a certaintemperature, and the development of porosity was investigated by means of X-ray micro-tomography. It was found that, with the prolongation in dwelling times, the number of pores decreased, while, on the other hand, the volume of these pores increased, and that the addition of silica mud increasesthe foaming temperature and slows down the foaming process.
F.10 Improvements to an existing technological process or technology
COBISS.SI-ID: 1980007Querns are made of vulcanic rock, dioritic group called trahiandesite. Trahiandesite composed mainly of feldspars, plagioclases and to a lesser extent, sanidine, grain of the monoclinic pyroxenes and biotitic-hornblende and opaque minerals. Chemical composition and petrographic and mineralogical characteristics of querns, such as glomeroporphyric structure (clusters of plagiosleses and pyroxenes) and zoned plagioclases with potassium enriched rims, indicate the source area of Euganian Hills in Padua, Italy.
F.27 Contribution to preserving/protecting natural and cultural heritage
COBISS.SI-ID: 1968487From a general perspective, all activities related to mining are one of the largest sources of metal pollution all over the world. FYR Macedonia is a metal-rich country where, as well as lead and zinc, other metals are also exploited. Furthermore, when dealing with mining, tailings dam failures are often closely related to such activities. Many environmental disasters related to mining have happened all over the world, one of which occurred in eastern FYR Macedonia. The collapse of the Sasa tailings dam left a great footprint on the adjacent area. Therefore the present study was conducted to determine the concentrations of potentially toxic elements (PTE) and rare earth elements (REE) in the surficial sediments and water of Lake Kalimanci and also in the fauna and flora. Majority of studied samples have heavily increased levels of PTE, which are also highly bioavailable under normal conditions. The accomplished HRI disclosed that V. melanops can pose a significantly high health risk for inhabitants, therefore it can be conclusively considered as highly contaminated with PTE and can consequently harm human health, especially for children in their early development stages.
D.09 Tutoring for postgraduate students
COBISS.SI-ID: 1066078Within doctoral dissertation the impact antrpogenih activities in the coastal marine environment was investigated. A special focus is on the impact of mariculture activities on the ecosystem and on different segments of the environment in the vicinity of these activities. Effects on individual segments of the local ecosystem are diverse and depend on many factors (water depth, currents, characteristics of bottom sediment, mode of cultivation, etc.). Therefore choosing the right location or placement of farms in the environment is essential.
D.09 Tutoring for postgraduate students
COBISS.SI-ID: 1064030