(Српско хемијско друштво)
• 19 Jun 2022
Laban, Bojana • Vujačić Nikezić, Ana
U poslednje vreme intenzivno se ispituju nanočestice metala za primenu u medicini kao nosači lekova i drugih biološki važnih molekula, koji bi poboljšali stabilnost leka i terapeutsku efikasnost. U ovom radu je ispitana adsorpcija fluorescentne boje indocijanin zeleno (ICG) na površini nanočestica srebra i zlata. Nanočestice srebra i zlata dobijene su zelenom sintezom u prisustvu aminokiseline L-metionina kao redukcionog i stabilizacionog sredstva. Dobijene su nanočestice sfernog oblika, negativ ...
57th meeting of the Serbian Chemical Society, Kragujevac, Serbia, June 18/19, 2021
• 01 Apr 2024
Pantović, Tijana • Jovanović, Filip • Petković, Branka • Laban, Bojana
Nanočestice metala i oksida metala (NPs) privlače pažnju mnogih istraživača zbog svojih jedinstvenih optičkih i električnih svojstva. Ove nanočestice nalaze primenu u biologiji, medicini, kao i u elektronici, za izradu senzora. U ovom radu sintetisane su nanočestice srebra (Ag NPs) i gvožđe(III)-oksida (Fe2O3 NPs), jednostavnom „solid-state“ metodom iz čvrstog stanja uz prisustvo različitih soli kao stabilizatora. Sintetisane su Ag i Fe2O3 NPs uz trinatrijum citrat kao stabilizator, kao i Fe2O3 ...
8th SYMPOSIUM Chemistry and Enviromental Protection, 30.05.-01.06. 2018. Kruševac, Serbia
• 01 Apr 2024
Jevtić, Sonja • Vukojević, Vesna • Đurdjić, Slađana • Pergal, Marija • Manojlović, Dragan • Petković, Branka • Stanković, Dalibor
Pethoxamid (РОА) is relatively new herbicide and it belongs to group of chloroacetamides. lt inhibits the germination of target weeds in com, soybeans, peas and beans, tobacco and other crops and it can affects on herbicide-resistant weeds. There are no many research records about this, in the future quite applicable, herbicide. Bearing in mind that pethoxamid is high soluble in water, with almost no sorption in soils [1], the leaching and runoff of this compound in ground and surfac ...
8th SYMPOSIUM Chemistry and Enviromental Protection, 30.05.-01.06. 2018. Kruševac, Serbia
• 01 Apr 2024
Jovanović, Vojislav • Samaržija-Jovanović, Suzana • Jevtić, Sonja • Petković, Branka • Marković, Gordana • Marinović-Cincović, Milena
Zbog emisije formaldehida (СН2О) iz drvenih proizvoda, gde se urea- formaldehidne (UF) smole, izmedu ostalog, koriste za impregnaciju drvenih panela koje se koriste u unutrasnjosti stambenih i drugih objekata pozeljno је da procenat slobodnog formaldehida (СН2О) u samoj smoli bude sto manji, jer је poznato da formaldehid ima stetno dejstvo na coveka, odnosno сео zivi svet. Pare formaldehida jako nadrazuju disajne puteve. Koncentracije od 10-20 ppm otezavaju disanje, а konc ...
56th meeting of the Serbian Chemical Society, Niš, Serbia, June 7/8, 2019
• 01 Apr 2024
Laban, Bojana • Veljović, Đorđe • Petković, Branka • Jokić, Anja
Nanočestice plemenitih metala (NPs) od velikog su interesa zbog svojih izvanrednih optičkih, hemijskih i fizičkih svojstava1. Nanočestice srebra (Ag NPs) privukle su posebnu pažnju zbog njihove primene u različitim oblastima. Ag NPs čestice najčešće se dobijaju redukcijom jona Ag+ u vodenim rastvorima. Međutim, koloidne disprezije su stabilne samo pri niskim koncentracijama metala i teško je dobiti prah NPs iz njihovih disperzija. U literaturi je objavljena sinteza praha Ag NPs primenom skroba m ...
56th meeting of the Serbian Chemical Society, Niš, Serbia, June 7/8, 2019
• 01 Apr 2024
Savić, Nada • Glišić, Biljana • Petković, Branka • Wadepohl, Hubert • Vojnović, Sandra • Nikodinović-Runić, Jasmina • Djuran, Miloš
U ovom radu, N,N',N'',N'''-tetrakis(2-piridilmetil)-1,4,8,11-tetraazaciklotetradekan (tpmc) kao makrociklicni ligand sa 2-piridilmetil grupama je korišćen za sintezu kompleksa srebra(I). Različite AgX soli (X = CF3SO3-, CF3COO- i BF4-) su korišćene za sintezu u cilju ispitivanja uticaja kontra-anjona na nuklearnost, stabilnost i biološku aktivnost kompleksa. Sintetisani kompleksi srebra(I) su okarakterisani primenom različitih spektroskopskih metoda, ciklične voltametrije i rendgenske strukturne ...
56th meeting of the Serbian Chemical Society, Niš, Serbia, June 7/8, 2019
• 01 Apr 2024
Milenković, Mila • Jevtić, Sonja • Laban, Bojana • Petković, Branka • Jokić, Anja
Nanočestice na bazi oksida gvožđa (NPs) su privukle veliku pažnju imajući u vidu njihove fizičke, posebno magnetne, i hemijske osobine. U ovom istraživanju su nanočestice gvožđe(III)-oksida (Fe2O3 NPs) sintetisane jednostavnim hemijskim metodom u čvstom stanju iz dve različite soli, FeSO4 . 7H2O i FeCl3 . H2O, u molskom udelu (1 : 2,5). Veličina NPs od 3 nm i njihov sferni oblik su određeni TEM merenjima. Dobijene NPs su dispergovane u vodi i monodisperzni koloid je okarakterisan UV-Vis i FTIR s ...
58th MEETING OF THE SERBIAN CHEMICAL SOCIETY Book of Abstracts
(Serbian Chemical Society)
• 01 Apr 2024
Ristić, Milenko • Dekić, Biljana • Radulović, Niko • Stojanović-Radić, Zorica • Dekić, Vidoslav • Aksić, Marija • Janićević, Suzana
The azine functional group is a part of numerous compounds exhibiting a range of
pharmacological activities. As part of our continuous search for new pharmacologically
active compounds, we designed, synthesized, and spectrally characterized a series of
mixed azines containing coumarin and another heterocyclic moiety. Antimicrobial activity
of the synthesized compounds was evaluated by a microdilution assay against five
different microorganisms, namely Gram-positive bacteria (Staphylococcus ...
56th MEETING OF THE SERBIAN CHEMICAL SOCIETY Book of Abstracts
(Serbian Chemical Society)
• 01 Apr 2024
Ristić, Milenko • Radulović, Niko • Dekić, Biljana • Ristić, Novica • Dekić, Vidoslav
During our previous work, we prepared a series of mixed azines with a coumarin moiety and
different benzaldehydes, and tested their acute toxicity and antioxidant activity. Since
heterocyclic compounds possess a broad range of biological activities, in the continuation
of our work, we designed, synthesized and fully spectrally characterized a series of new
mixed azines starting from 3-acetyl-4-hydroxycoumarin and different heteroaromatic
aldehydes. The synthesized compounds were evaluated f ...
55th Meeting of SCS, Book of Abstracts
(Serbian Chemical Society)
• 01 Apr 2024
Radulović, Niko • Ristić, Milenko • Mladenović, Marko • Ristić, Novica • Dekić, Vidoslav • Dekić, Biljana • Ranđelović, Vladimir
Detailed GC and GC-MS analysis of a diethyl ether washings of fresh flowers of Dianthus cruentus Griseb. (Caryophyllaceae) enabled the identification of 153 constituents. The major identified compounds were long-chain n-alkanes - pentacosane (5.0 %), heptacosane (19.5 %) and nonacosane (6.5 %). Detailed analyses, in combination with synthesis and chemical transformations (transesterification and synthesis of dimethyl disulfide adducts), led to the identification of a homologous series of n-, iso ...
13th Simposium “Novel tehnologies and economic development”, Leskovac (2019)
(Faculty of Technology, Leskovac)
• 18 Oct 2019
Kostić, Marija • Čanaćević, Milena • Samaržija-Jovanović, Suzana • Jovanović, Vojislav • Petković, Branka • Marković, Gordana • Budinski-Simendić, Jaroslava
Montmorillonite clays are of great importance for processes such as adsorption and
catalysis and polymer composites fabrication . The textural properties of this filler can
be modified to increase their application. In this work the hydrolytic stability of
composites based on urea-formaldehyde resin (UF) and eco-friendly montmorillonite (KSF) as formaldehyde scavenger was investigated. KSF was activated by sulfuric acid (H2S04) with and without mechanical mixing .The degree activation was det ...
8. Simpozijum Hemija i zaštita životne sredine, Kruševac (2018)
(Srpsko hemijsko drustvo)
• 30 May 2018
Jovanović, Vojislav • Samaržija-Jovanović, Suzana • Jevtić, Sonja • Petković, Branka • Marković, Gordana • Marinović-Cincović, Milena
Zbog emisije formaldehida (CH2O) iz drvenih proizvoda, gde se urea- formaldehidne
(UF) smole, izmedu ostalog, koriste za impregnaciju drvenih panela koje se koriste u
unutrašnjosti stambenih i drugih objekata pozeljno je da procenat slobodnog formaldehida
(CH2O) u samoj smoli bude sto manji, jer je poznato da formaldehid ima štetno dejstvo
na čoveka, odnosno ceo živi svet. Pare formaldehida jako nadražuju disajne puteve.
Koncentracije od 10-20 ppm otežavaju disanje, a koncentracije od 650 p ...
Kongres mladih matematičara Novi Sad 2022
• 01 Apr 2024
Maksimović, Miroslav
In this talk, we will discuss the generalized Riemannian manifold and introduce a quarter-symmetric connection that preserves the generalized Riemannian metric. We will also observe a quarter-symmetric connection with a special condition and recurrent torsion tensor and examine the properties of linearly independent curvature tensors of generalized Riemannian manifold.
