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Now showing items 602-621 of 1189

    • STRUKTURIRANJE EKOLOSKI PRIHVATLJIVIH ELASTOMERNIH KOMPOZITNIH MATERIJALA 

      Kojić, Dejan; Vukić, Nevena; Samaržija-Jovanović, Suzana; Erceg, Tamara; Jovičić, Mirjana; Aleksić, Vojislav; Ristić, Ivan; Mićić, Vladan (Univerzitet u Kragujevcu, Agronomski fakultet u Čačku, 2018-03-09)
      Kod recikliranja otpadne gume neophodno je poznavati hemijski sastav otpadnog proizvoda, ukoliko će se on koristiti u recepturama za nove hibridne elastomerne materijale. Kompozitni elastomerni materijali dobijeni od ...

    • Strukturiranje elastomernih materijala za primenu u poljoprivredi 

      Budinski-Simendić, Jaroslava; Jovanović, Slaviša; Marković, Gordana; Aleksić, Vojislav; Jovanović, Vojislav; Tanasić, Jelena; Samaržija-Jovanović, Suzana (UNIVERZITET U KRAGUJEVCU, AGRONOMSKI FAKULTET U ČAČKU, 2019-03-15)
      Poljoprivreda i poljoprivredna industrija zahtevaju elastomeme proizvode koji mogu izdržati dugotrajnu izloženost ekstremnim naponima i hemikalijama. Elastomeri dobijeni od etilen-propilen-dienskog kaučuka (EPDM) nalaze ...

    • Student's Status in Contemporary Teaching Problems and Perspectives 

      Arsić, Zvezdan M.; Babić Antić, Jelena B.; Radojević, Tatjana S. (Филозофски факултет Косовска Митровица, 2019)
      It is widely known that teaching as a social and historical category, during various periods of civilizational development, was characterized by several direct and specific factors, with the pupil (student) as a specific ...

    • Students eating habits and health self-assessment at the university in Kosovska Mitrovica 

      Мирковић, Момчило; Илић, Данијела (53 Days of Preventive Medicine – International congress, Institute of public health Nis, 2019-09-24)
      Introduction: Qualitative and quantitative needs for a well-balanced diet during studying are higher than in any other period of a lifetime. Aim: The aim was to determine the frequency of certain eating habits among ...

    • Study of microstructure and thermal properties of as-cast high carbon and high chromium tool steel 

      Manasijević, Dragan; Radović, Žarko; Štrbac, Nada; Balanović, Ljubiša; Stamenković, Uroš; Gorgievski, Milan; Minić, Duško; Premović, Milena; Holjevac Grgurić, Tamara; Tadić, Nebojša (Metallurgical and Materials Engineering, 2019-03)
      This work aims to investigate the microstructural and thermal properties of as-cast high carbon and high chromium cold work tool steel. The microstructure was investigated by using scanning electron microscopy with energy ...

    • A study of pv system application on the sustainable development in Serbia, XIV Conference of Chemists 

      Todorović, Dragana; Jovanović, Slavica; Kevkić, Tijana; Stojanović Krasić, Marija; Milojević, Nenad; Drljača, Branko (University in Banjaluka, Faculty of Technology, 2022-10-22)
      Climate change is one of the most significant environmental problems and is affecting the entire global population. Renewable sources of energy (RES) are vital to deal with this problem. Solar energy, especially ...

    • THE STUDY OF THE AGE-RELATED DYNAMICS OF THE REACTION TIME TO VISUAL STIMULI IN SCHOOLCHILDREN 

      Илић, Александара (Physical Education and Sport,, 2018)
      A fast reaction to visual stimuli is important for the success of any athlete. A fast reaction time enables a quick response in key situations. We have studied how age, sport engagement, moderate physical activity and ...

    • Study of thermal properties and microstructure of the Ag–Ge alloys 

      Manasijević, Dragan; Balanović, Ljubiša; Marković, Ivana; Gorgievski, Milan; Stamenković, Uroš; Minić, Duško; Premović, Milena; Đorđević, Aleksandar; Ćosović, Vladan (JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2022)
      Microstructure, phase transitions and thermal properties including thermal diffusivity and thermal conductivity of four Ag–Ge alloys with 20, 40, 60 and 80 at % of Ge were experimentally investigated in this study. Observation ...

    • Suzuki type fixed point results and applications in partially ordered Sb -metric spaces 

      Dedović, Nebojša; Kishore, Gajula Naveen Venkata; Ram Prasad, Daripally; Vujaković, Jelena (University of Novi Sad, Faculty of Sciences, Department for Mathematics and Informatics, 2019-01-12)
      In this paper we give some applications to integral equations as well as homotopy theory via Suzuki type fixed point theorems in partially ordered complete Sb - metric space by using generalized contractive conditions. We ...

    • Synthesis and antioxidant activity of a new 4-aminocoumarin derivative 

      Ristić, Novica; Radulović, Niko; Dekić, Biljana; Ristić, Milenko; Dekić, Vidoslav
      Synthesis, spectral characterization, and evaluation of in vitro antioxidant activity of a new coumarin derivative, 4- ((1,3,4-thiadiazol-2-yl)amino)-3-nitro-2H-chromene-2-one, are described. The synthesis of the new product ...

    • Synthesis and characterization of copper (II) complex with 2,6-diacetylpyridine-bis(phenylhydrazone) 

      Belošević, Svetlana; Radanović, Mirjana; Rodić, Marko; Leovac, Vukadin (University thought, Publication in Natural Sciences, 2021)
      The syntheses, physicochemical and structural properties of the novel Cu(II) complex with 2,6-diacetylpyridinebis(phenylhydrazone) (L), of the formula [CuL2]Br2are presented. In the reaction of warm MeOH solutions ...

    • Synthesis and characterization of pH-sensitive Saccharide modified polyurethane hydrogels – Effect of polyol, crosslinker and acid chain extender 

      Kostić, Marija; Cakić, Suzana; Ristić, Ivan; Marinović-Cincović, Milena; Nikolić, Ljubiša; Samaržija-Jovanović, Suzana (Univerzitet u Nišu - Tehnološki fakultet, Leskovac, 2021-07-10)
      Biodegradable polyurethanes can be the basis for drug delivery systems that are sensitive to external changes. pH-sensitive polyurethanes (PUs) have been used successfully as intravaginal rings and specific drug delivery ...

    • Synthesis and characterization of quercetin-conjugated gold nanoparticles 

      Momić, Tatjana; Lazarević-Pašti, Tamara; Laban, Bojana; Marković, Mirjana; Vasić, Vesna (Society of Physical Chemists of Serbia, 2018-09-28)
      Gold nanoparticles and quercetin-conjugated gold nanoparticles complex were synthesized using trisodium citrate as reducing agent. Both kinds of nanoparticles were characterized using spectrophotometry, dynamic light ...

    • Synthesis and complete NMR spectral assignments of new benzylamino coumarin derivative 

      Dekić, Vidoslav; Radulović, Niko; Ristić, Milenko; Dekić, Biljana; Ristić, Novica
      This research involves the reaction of 4-chloro-3-nitrocoumarin and (4-methoxyphenyl)methanamine, whereby a novel coumarin derivative 4-[(4-methoxybenzyl) amino]-3-nitro-2H-chromen-2-one was obtained in good yield. The ...

    • Synthesis and crystal structure of copper(II) complexes with pyridoxal S-methylisothiosemicarbazone bearing a new coordination mode 

      Rodić, Marko; Radanović, Mirjana; Vojinović Ješić, Ljiljana; Belošević, Svetlana; Jaćimović, Željko; Leovac, Vukadin (Journal of the Serbian Chemical Society, 2019-01)
      The reaction of copper(II) nitrate and pyridoxal S-methylisothiosemicarbazone (PLITSC) in the presence of ammonium thiocyanate resulted in the formation of two types of complexes. A dimeric complex of the formula ...

    • Synthesis and Electrochemical Estimation of DNA-Binding Capacity of Novel Ferrocene-Containing Pyrrolidines 

      Pešić, Marko; Bugarinović, Jovana; Minić, Aleksandra; Bogdanović, Goran; Todosijević, Anka; Stevanović, Dragana; Damljanović, Ivan (The Electrochemical Society, 2020-01)
      The design, synthesis, spectral and electrochemical characterization of a series of novel pyrrolidine derivatives have been described. The synthesis was achieved by 1,3-dipolar cycloaddition of azomethine ylides and ...

    • Synthesis and spectral characterization of asymmetric azines containing a coumarin moiety: The discovery of new antimicrobial and antioxidant agents 

      Ristić, Milenko; Radulović, Niko; Dekić, Biljana; Dekić, Vidoslav; Ristić, Novica; Stojanović-Radić, Zorica (2018-10-25)
      Nine unsymmetrical azines containing a coumarin moiety were prepared by the reaction of the hydrazone of 4-hydroxy-3-acetylcoumarin with differently substituted aromatic aldehydes. The azines were fully spectrally ...

    • Synthesis and structural characterizations of novel atropoisomeric ferrocene-containing six-membered cyclic ureas 

      Minić, Aleksandra; Novaković, Slađana; Bogdanović, Goran; Bugarinović, Jovana; Pešić, Marko; Todosijević, Anka; Ilić Komatina, Danijela; dam, Ivan; Stevanović, Dragana (Polyhedron, 2020-02)
      The stereochemical phenomenon that arises from hindered rotation around bonds in nonplanar molecules is termed the atropoisomerism. During our previous work we noted the presence of this kind of isomerism in 1-aryl-4-fer ...

    • Synthesis and structure of cobalt(II) complex with 2,6-diacetylpyridine-bis(phenylhydrazone) 

      Belošević, Svetlana; Rodić, Marko; Radanović, Mirjana; Leovac, Vukadin (University thought - Publication in Natural Sciences, 2018-10)
      The molecular and crystal structure of a newly synthesized Co(II) complex with 2,6-diacetylpyridine bis(phenylhydrazone) (L), of the formula [CoL2]I2 are described. The reaction of warm EtOH solutions of the ligand, ...

    • Synthesis of novel ferrocene-containing 1,3-thiazinan-2-imines: One-pot reaction promoted by ultrasound irradiation 

      Minić, Aleksandra; Bugarinović, Jovana; Pejović, Anka; Ilić Komatina, Danijela; Bogdanović, Goran; Damljanović, Ivan; Stevanović, Dragana (Tetrahedron Letters, 2018-09)
      A simple one-pot synthesis of new ferrocene-containing 1,3-thiazinan-2-imines from 3-arylamino-1-ferrocenylpropan-1-ols and phenyl isothiocyanate has been developed. The key intermediate β-hydroxy thioureas were generated ...