Search Results (70)
Migration of critical radionuclides in the area of former uranium mine Žirovski vrh
A study of the migration of critical radionuclide in the area of the former uranium mine of Žirovski vrh in Slovenia was performed. Critical natural radionuclides are defined as the long-lived natural radionuclides from the uranium-radium decay chain, which are 238U, 234U, 230Th, 226Ra, 210Pb and 210Po. In the area …
Functionalization of Magnetic Nanoparticles
In my doctoral dissertation, I primarily devoted my attention to the modifying surface properties of superparamagnetic maghemite nanoparticles. Superparamagnetic maghemite nanoparticles were synthesized using co-precipitation method from an aqueous solution of Fe (II) and Fe (III) ions. The size of the nanoparticles was controlled with aging time at pH = …
Synthesis and Characterization of Bi12SiO20 Thin Films Prepared by Sol-gel Method
The sillenites Bi12MO20 (M = Si, Ge, Ti, Pb, Mn, B1/2P1/2) have been recognised as promising bulk materials for electronic applications because their dielectric properties (5.5 GHz: ε = 37.4 - 41, τf = -19 – (-84) ppm/K, Q x f = 800 - 8100 and Tsin = 680 - …
The hydrolysis of AlN powder and its use for the synthesys of nanostructured alumina coatings
he thesis describes a study of aluminum nitride (AlN) powder hydrolysis in the temperature range between 5 °C and 90 °C. The analysis of the temperature dependence of the course of the hydrolysis and the reaction kinetics, along with a mechanistic model set up for the hydrolysis reactions, gives a …
Plasma treatment of polymers for biomedical applications
Vascular grafts made of polyethyleneterephthalate (PET) polymers have successfully replaced large-diameter blood vessels, but the long-term performance of small-diameter (< 6 mm) vascular grafts is still disappointing. The main problem is insufficient biocompatibility of polymer surface with blood, which causes complications after implementation; such as thrombosis or restenosis. These complications …
Occurrence, fate and removal of pharmaceutical residues in water treatment
The presence of pharmaceutical residues in surface waters is an emerging environmental issue that provides a new challenge to treatment systems for potable water, wastewater and water reuse. Their principle pathways into the sewerage system are twofold: first, after being administered to patients they are normally excreted as various metabolites …
Assessment of behavioural thermoregulation in humans: with particular reference to mild narcosis and prolonged bed rest
Behavioural responses are the most efficient thermoregulatory responses, since relatively simple actions can prevent the need to activate the more metabolically costly autonomic responses. Dependence on behavioural responses may increase in environmental conditions where the prevailing nonthermal factors (NTF) attenuate autonomic responses and alter thermal perception (Mekjavic et al., 2003; …
Polyelectrolyte multilayer template assisted in-situ synthesis of inorganic nanostructures
Thin film nanocomposites consisting of inorganic matter embedded within a soft polymeric matrix on the nanometer scale have attracted much interest lately due to their unique properties with potential application in optoelectronics and photonics. Polyelectrolyte multilayers formed by the layer-by-layer electrostatic assembly of oppositively charged polyions can be utilized as …
Mass Balance of Mercury in the Idrijca River Catchment
Mercury (Hg) pollution has been investigated in the area of the Idrija mercury mine, Slovenia, where the second largest mercury mine in the world operated for more then 500 years. Although the production of mercury at the Idrija mercury mine stopped in 1994, centuries of mining and ore processing operations …
Solution synthesis of nanoparticles in multicomponent oxide systems
The study of PbZrO3 (PZ), PbTiO3 (PT) and La2Zr2O7 (LZ) prepared by alkoxide sol-gel synthesis is described. PZ and PT sols were prepared from lead acetate, zirconium and titanium n-butoxide, in n-butanol and hydrolysed with Rw (molar ratio of water per lead acetate) between 2 and 15 in neutral medium …