Kinematic differences between NLS1 and BLAGN sources

It is well-known that the higher policyclic aromatic hydrocarbon (PAH) abundance, lower black hole mass, higher accretion rate and lower luminosities are among the major characteristics of Narrow-Line Seyfert galaxies (NLS1), when they are compared to Broad line Seyfert galaxies (BLS1). NLS1s may be normal Seyfert galaxies at an early stage of evolution, their black holes may still be growing and/or they could be special for some other reason. In this work we discuss the findings that NLS1s have most of line and continuum luminosities correlated with FWHM(H$\beta$), which may be the trace of their rapid black hole mass grow. BLS1 do not show such trends. Also, PAHs may be destroyed as the black hole grows and the starbursts are removed, for NLS1 objects.Comment: Revisiting narrow-line Seyfert 1 galaxies and their place in the Universe - NLS1 Padov

Cavitation damages morphology of high-strength low-alloy steel

This paper presents the research into behaviour of HSLA steel affected by cavitation. The parent material (PM) and simulated heat-affected zone (SHAZ) were studied. Ultrasonic vibratory cavitation test was performed in laboratory conditions (by stationary specimen method). Scanning electron microscopy (SEM) was used to observe the variations in the surface morphology that occurred within different time intervals

Dielectric barrier discharge in water solution treatment

Application of coaxial dielectric barrier discharge (DBD) reactor for treatment of different water solutions was studied. In this reactor the circulating liquid is a part of discharge electrode configuration. Thus liquid is directly exposed to UV radiation and reactive species like ozone, radicals, ions and electrons. This configuration of DBD also offers to operate the plasma with and without water falling film at one of the electrodes. Thus it can act as a plasma reactor for gas treatment and as a scrubber for soluble compounds in a gas phase, simultaneously. Here we present measurement of hydroxyl radical ("OH) in plasma treated distilled water as well as treatment of phenols, textile dyes, medicaments, herbicides and detergents

Supplementary material for the article: Ognjanović, M.; Dojčinović, B.; Fabián, M.; Stanković, D. M.; Mariano, J. F. M. L.; Antić, B. Microwave Assisted Hydrothermal Synthesis of (Fe,Co)3O4 Nanoparticles in the Presence of Surfactants and Effects of Co/Fe Ratio on Microstructure and Magnetism. Ceramics International 2018, 44 (12), 13967–13972. https://doi.org/10.1016/j.ceramint.2018.04.246

Supplementary material for: [https://doi.org/10.1016/j.ceramint.2018.04.246]Related to published version: [http://cherry.chem.bg.ac.rs/handle/123456789/2170]Related to accepted version: [http://cherry.chem.bg.ac.rs/handle/123456789/3236

Decolorization of reactive black 5 using dielectric barrier discharge in the presence of inorganic salts

Inorganic salts improve the coloration of textiles, which increase pollution load on dyehouse effluent in general. Decolorization of reactive textile dye C.I. Reactive Black 5 was studied using Advanced Oxidation Processes (AOPs) in a non-thermal plasma reactor, based on coaxial water falling film Dielectric Barrier Discharge (DBD). Initial dye concentration in the solution was 40.0 mg L-1. The effects of addition of inorganic salt different high concentrations (NaCl, Na2SO4 and Na2CO3) on the degree of decolorization were studied. Recirculation of dye solution through the DBD reactor with applied energy density 45-315 kJ L-1 was used. The influence of residence time was investigated after 5 minutes and 24 hours of plasma treatment. Decolorization of the dyes was monitored by spectrophotometric measurement. Changes of pH values and the conductivity of dye solution after each recirculation were tested. The most effective decolorization of over 90% was obtained with the addition of NaCl (50 g L-1), applied energy density of 135 kJ L-1 and after residence time of 24 hours of plasma treatment. Decolorization of solutions containing inorganic salts Na2SO4 and Na2CO3 were lower than for the solution without salt

Chemical Composition, Total Phenols and Flavonoids Contents and Antioxidant Activity as Nutritive Potential of Roasted Hazelnut Skins (Corylus avellana L.)

The present study evaluates natural composition of Serbian roasted hazelnut skins (HS) with potential role in application as functional nutrient of various food products. Total phenols (TPC) and flavonoids contents (TFC) in HS extracts obtained with dierent ethanol concentrations (10%—I, 50%—II and 96%—III) and their antioxidant activities were investigated. The highest total phenols content (706.0 9.7 mgGAE/gextract) was observed in 96% ethanol HS extract. Ethanol HS extracts showed very high antioxidant activity with eective concentrations (EC50) ranged between 0.052 and 0.066 mg/mL. The phenol and flavonoid content of roasted HS extracts I–III was determined by HPLC-ESI-MS/MS analyses. Contents of lipids, proteins, carbohydrates, metals, and C, H, N, S elements in roasted HS were also determined. Relatively high C/N, C/P and C/N/P ratios, rich metal contents and fatty acids composition indicated that hazelnut skin might be a good candidate for use as either human or fungal functional nutrient. In addition, possible application of phenolic HS extracts as UV booster was studied by recording UV spectra (220–440 nm) of 10 mg/L of HS extracts I–III combined with 10 mg/L of chemical sunscreen agent benzophenone-3 and in vitro sun protection factor (SPF) was calculated

Karakterizacija Morus vrsta u odnosu na mikro, makro i toksične elemente

This study examines the mineral composition of the extracts of the fruits, leaves and roots of white mulberry (Morus alba L.) and black mulberry (Morus nigra L.) grown in Serbia. All extract samples of white and black mulberry were analyzed for the content of micro (B, Co, Cr, Cu, Fe, Li, Mn, Ni, Se, Sr, Zn), macro (Ca, Mg, Na), and toxic metals (Al, As, Cd, Hg, Pb) by inductively coupled plasma optical emission spectrometry (ICP-OES). The study revealed that parts of the plant had statistically significant impact on the levels of the examined elements among the two Morus species. All extracts contained high amounts of Ca, Mg, Na, B, Cu, Fe, Mn and Zn. The studies showed that in the most of extracts dominant macro element was Mg (591- 1942 μg/g of dry extract), while dominant microelements were Zn, B, Cu in all extracts, except for the black mulberry leaves, whose extract was most abundant in Fe (143 μg/g of dry extract). The highest content of micro and macro elements was detected in the extract of black mulberry leaves. This work contributes to the knowledge of the nutritional properties of Morus species. The obtained results may be useful in the evaluation of new dietary and food products.Ispitivanje je bazirano na određivanju mineralnog sastava ekstrakata Morus alba L. (beli dud) i Morus nigra L . (crni dud) uključujući plod, list i koren sa teritorije Srbije. U svim analiziranim ekstraktima određen je sadržaj mikro (B, Co, Cr, Cu, Fe, Li, Mn, Ni, Se, Sr, Zn), makro (Ca, Mg, Na) i toksičnih elemenata (Al, As, Cd, Hg, Pb) primenom optičke emisione spektroskopije sa induktivno kuplovanom plazmom (ICP-OES). Ispitivanje je pokazalo da postoji statistički značajna korelacija između delova biljke Morus vrste i sadržaja ispitivanih elemenata. U svim ekstraktima je dokazan visok sadržaj elemenata: Ca, Mg, Na, B, Cu, Fe, Mn i Zn, respektivno. Dominantan makro element u većem broju ekstrakata je Mg (591 - 1942 μg/g suvog ekstrakta). Što se tiče mikroelemenata, u svim ispitivanim ekstraktima u većem sadržaju su zastupljeni Zn, B i Cu. U uzorku M. nigra posebno se izdvaja Fe po svom sadržaju (143 μg/g suvog ekstrakta) u odnosu na ostale prisutne elemente. Od svih ispitivanih uzoraka najviši sadržaj mikro i makro elemenata je detektovan u ekstraktima lista M. Nigra. Ovaj rad doprinosi poznavanju nutritivnih svojstava Morus vrsta. Dobijeni rezultati mogu biti korisni u kreiranju novih dijetetskih i prehrambenih proizvoda

Chemical Characterization of Fruit Wine Made from Oblacinska Sour Cherry

This paper was aimed at characterizing the wine obtained from Oblacinska, a native sour cherry cultivar. To the best of our knowledge, this is the first paper with the most comprehensive information on chemical characterization of Oblacinska sour cherry wine. The chemical composition was characterized by hyphenated chromatographic methods and traditional analytical techniques. A total of 24 compounds were quantified using the available standards and another 22 phenolic compounds were identified based on the accurate mass spectrographic search. Values of total phenolics content, total anthocyanin content, and radical scavenging activity for cherry wine sample were 1.938 mg gallic acid eqv L-1, 0.113 mg cyanidin-3-glucoside L-1, and 34.56%, respectively. In general, cherry wine polyphenolics in terms of nonanthocyanins and anthocyanins were shown to be distinctive when compared to grape wines. Naringenin and apigenin were characteristic only for cherry wine, and seven anthocyanins were distinctive for cherry wine

Supplementary data for article: Pavlovic, A. V.; Dabić-Zagorac, D.; Momirović, N. M.; Dojčinović, B. P.; Milojković-Opsenica, D.; Tešić, Ž. L.; Natić, M. Chemical Composition of Two Different Extracts of Berries Harvested in Serbia. Journal of Agricultural and Food Chemistry 2013, 61 (17), 4188–4194. https://doi.org/10.1021/jf400607f

Supporting information for: [https://doi.org/10.1021/jf400607f]Related to published version: [http://cherry.chem.bg.ac.rs/handle/123456789/1640

Antitumor activity of organoruthenium complexes with chelate aromatic ligands, derived from 1,10-phenantroline: Synthesis and biological activity

The monocationic chloro complexes containing chelating N∩N ligands: [(η6-p-cymene)Ru(L1–4)Cl]+ (1–4), where L1 = 4-methyl-1,10-phenantroline, L2 = dipyrido[3,2-a:2′,3′-c]phenazine, L3 = 11-chloro-dipyrido[3,2-a:2′,3′-c]phenazine, L4 = 11-nitro-dipyrido[3,2-a:2′,3′-c]phenazine; p-cymene = 1-methyl-4-isopropylbenzene) have been prepared and characterized as the hexafluorophosphate salts. The biological activity of 1–4 has been investigated in selected 2D monolayer cell cultures (A549, PANC-1, MDA-MB-231, MRC-5). All investigated ruthenium complexes showed similar or even better cytotoxicity to cisplatin. However, there was no significant reduction in growth of PANC-1 cells in a 3D cell culture of multicellular tumor spheroids (MCTS) after treatment with 2–4, while the cisplatin treatment induced retardation in MCTS growth. Flow cytometry analysis of the cell cycle of PANC-1 cells shows that 3 caused changes of cell cycle phase distribution characterized by slight accumulation of cells in the G2-M phase. Absence of the Sub-G1 phase in the cell cycle of the treated cells indicated that there was no fragmentation of DNA for the analyzed time intervals (48 and 72 h treatment). Fluorescent microscopy, after acridine orange/ethidium bromide staining, revealed that the investigated ruthenium complexes induced some characteristics of apoptotic morphology (shrinking and condensation of chromatin) with notably preserved integrity of the plasma membrane. Investigation of cellular uptake and DNA - fraction accumulation performed by inductively coupled plasma mass spectrometry in PANC-1 cells with equimolar concentrations (5 μM) of 2–4 and cisplatin showed more efficient cellular uptake and DNA - fraction accumulation of complex 3 compared to complexes 2 and 4