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The Fe-bearing intermetallic phases present in the as-cast AA6026 alloy and their evolution during homogenization treatments at 480-550°C were investigated using optical microscopy, SEM, and TEM techniques in combination with EDS analysis. In addition to the α-Al(Fe,Mn)Si phase with dendritic morphology, two types of plate-like Fe-bearing microconstituents were revealed in the microstructure of the as-cast alloy. The EDS microanalysis and electron diffraction showed that one set of platelets represented thin sections of α-Al(Fe,Mn)Si microconstituent. The other set of plate-like microconstituents was identified as a tetragonal, silicon-rich δ-Al4(Fe,Mn)Si2 phase. The formation of the δ-Al4(Fe,Mn)Si2 phase was attributed to the chemical composition of the alloy. During homogenization, the metastable δ-Al4(Fe,Mn)Si2 transformed into the α-Al(Fe,Mn)Si phase and fragmented. The dendritic α-Al(Fe,Mn)Si microconstituents underwent fragmentation. However, while the α-Al(Fe,Mn)Si microconstituents preserved a b.c.c. crystal lattice throughout the process, the product of the transformation of the δ-Al4(Fe,Mn)Si2 phase exhibited primitive cubic lattice.

Low energy Ag ions were implanted into silicon and annealed at different temperatures in order to generate plasmonic active silicon hybrids. It was found that as the ion fluence of irradiation was increased, a monotonic decrease in the absorption spectra in the ultraviolet region occurs, due to amorphization and macrostructuring of the Si surface. At the same time, the optical spectra are characterized by a strong band after implantation presenting the contribution of the surface plasmon resonance (SPR) of Ag nanoparticles. After heat treatment at 500 and 600ºC, the SPR peak shifts to lower wavelengths, as compared to as implanted samples, whereas the plasmon position shifts to higher wavelengths for annealing at 700°C. This observation can be explained by either an out-diffusion of Ag or by stress relaxation and recrystallization of silicon. [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. III 45005]

The present study deals with CrN films irradiated at room temperature (RT) with 200 keV Ar+ ions. The CrN layers were deposited by d.c. reactive sputtering on Si (100) wafers, at nitrogen partial pressure of 5×10-4 mbar, to a total thickness of 280 nm. The substrates were held at 150ºC during deposition. After deposition the CrN layers were irradiated with 200 keV Ar+ ions to the fluences of 5×1015 - 2×1016 ions/cm2. Structural characterization was performed with Rutherford backscattering spectroscopy (RBS), cross-sectional transmission electron microscopy (XTEM) and X-ray diffraction (XRD). Spectroscopic ellipsometry measurements were carried out in order to study optical properties of the samples. The irradiations caused the microstructrual changes in CrN layers, but no amorphization even at the highest argon fluence of 2×1016 ions/cm2. Observed changes in microstructure were correlated with the variation in optical parameters. It was found that both refractive index and extinction coefficient are strongly dependent on the defect concentration in CrN layers. [Projekat Ministarstva nauke Republike Srbije, br. III 45005]

The oil content and fatty acids, unsaponifiable composition and antioxidant activities of the seed oil from three Malvaceae species (Malva sylvestris L., Malva sylvestris L. var. mauritiana and Althaea officinalis L.) from Serbia were determined. The oil yields from the seeds varied from 7.18 to 9.60%. The main fatty acids of the seed oils were linoleic acid (44.14-54.49%), oleic acid (13.00-16.99%) and palmitic acid (11.45-24.29%). A small amount of cyclopropenoid acids, up to 1.85% was also established. The predominant sterol in all seed oils was β-sitosterol (11.51-17.34 mg/g of oil). The antioxidant potential of all the investigated seed oils was evaluated by radical scavenging activity using 2,2-diphenyl-1- picrylhydrazyl (DPPH) assay.

The experiment of ex situ soil bioremediation was performed at the locality of the Oil Refinery in Pančevo (alluvial formation of the Danube River, Serbia) polluted with an oil type pollutant. The experiments of biostimulation, bioventilation and reinoculation of an autochthonous microbial consortium were performed during the six-month period (May-November 2006). The changes in the quantity and composition of the pollutant, or the bioremediation effect, were monitored by analysis of the samples of the polluted soil taken in time spans of two weeks. In this way, from the beginning until the end of the experiment, 12 samples were collected and marked as P1-P12 (Pančevo 1-Pančevo 12). The results obtained showed that more significant changes in the composition of the oil pollutant occurred only during the last phases of the experiment (P8-P12). The activity of microorganisms was reflected in the increase of the quantity of polar oil fractions, mainly fatty acid fractions. In this way, the quantity of total eluate increased, and the quantity of the insoluble residue was reduced to a minimum, whereby the oil pollutant was transformed to a form that could be removed more efficiently and more completely from the soil, as a segment of the environment.

In this work bilayer structures, composed of ferromagnetic manganite and ferroelectric titanate layers, were obtained by solution deposition technique. The first step in preparation of the bilayer thin films was deposition of manganite (LaMnO3 or La0.7Sr0.3MnO3) layer by water-based polymer assisted deposition (PAD). Polycrystalline structures were obtained when manganite films were deposited by spin coating on commercial Pt/TiO2/SiO2/Si type substrate, whereas epitaxial films were grown on a single crystal SrTiO3 with (001) orientation substrate. The second ferroelectric titanate (BaTiO3 or Ba0.7Sr0.3TiO3) layer was deposited by spin coating using sol-gel method. The obtained bilayer structures have thickness below 100 nm, and epitaxial growth of the Ba0.7Sr0.3TiO3 film on the La0.7Sr0.3MnO3 surface was obtained, due to the similar lattice parameters between these two crystal structures.

Cotinus coggygria Scop. is a valuable medicinal plant species with pronounced pharmacological potential due to its numerous biological activities. The herb is characterized by a high content of polyphenols among which is fustin. The anticancer activities of fustin, however, are extremely weakly studied. The aim of the present study was to investigate the in vitro antiproliferative potential of fustin isolated from the heartwood of C. coggygria against cell lines originating from two of the most common cancer types – breast (MDA-MB-231 and MCF7), and colon cancer (Colon 26).

Considering the remarkable dearth of articles and studies on the work and oeuvre of Vojislav Voki Kostić, a significant figure who made valuable contributions to incidental music (particularly in the theater), this paper aims to present Kostić's body of work and analyze the fundamental principles that guided him in composing incidental music for theatrical performances. The preliminary conclusions presented in this paper are based on experiences gained from watching plays through archival videos (Kosančićev Venac 7, Marija se Bori s Anđelima, Madam San Žen, Garderober, Marija Stjuart, Bekstvo, Kneginja od Foli Beržera, Valjevska Bolnica, Sabirni Centar, Očevi i Oci, and Ruženje Naroda u Dva Dela), as well as on available primary and secondary sources (composer's autobiography, interviews, recordings, and others). Thus, this exploration of the composer's music for the theater is seen as a preliminary step in towards more comprehensive research that Kostić's work warrants. Additionally, the paper briefly discusses the challenges associated with researching incidental music in the theater, particularly in the case of approaching Kostić's music due to the scarcity of archival materials and limited contact with potential heirs of his legacy. For the purpose of a concise analytical review of Kostić's music for the play Maria Stuart, Schiller's text is briefly presented to facilitate an understanding of the staging of this work and the interpretation of Kostić's music in the context of the aforementioned performance.

Starting with the idea that sustainability as a concept can (and should) be applied in the field of incidental music, thus, ensuring the continuation of its life after the curtain falls, we argue that discography is one of the main ways in which incidental music (like any other type of music) can be preserved and later studied. We argue that discography (as a sustainability tool) equals the survival (survivability) of incidental music and test this hypothesis on four case studies - compact discs and releases of incidental music of four composers: Vojislav Voki Kostić, Zoran Erić, Zoran Simjanović and Isidora Žebeljan.

Introduction. Development of malignancy in chronic burn scars is described i n 2 % of cases, with cutaneous squamous cell carcinoma (cSCC) being the most frequent. It develops several years after the burn injury, as a consequence of malignant transformation in chronically in-flamed tissue. Melanoma in a burn scar is, however, quite rare; in several cases, a synchronous or metachronous appearance of melanoma and cSCC was noted. Based on the previous rare reports, melanoma and cSCC can concurrently arise on thermal burn scars, as well as on the areas treated with skin grafts. Case report. We reported a case of a 6 7-year-old male who was accidentally scalded by boiling water at the age of 14. The patient subsequently developed melanoma at the age of 60, according to clinical and dermoscopic examination at the site of the burn scar, and after excision and histopathological analysis, the diagnosis of melanoma was confirmed (superficial spreading melanoma, Breslow 0.87 mm, with ulceration, pT1b). Complete surgical excision was done, and the diagnosis was confirmed with histopathological analysis. After the diagnosis of melanoma, regular follow-up every six months was scheduled, and three years later, cSCC was suspected and confirmed after surgical excision and histo-pathologic analysis. Conclusion. This case highlights the importance of long-term dermatological follow-up after burn injuries and early detection and treatment of skin cancer that can lead to better outcomes in these patients.