Претрага
125 items
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Comparison of sequential and single extraction in order to estimate environmental impact of metals from fly ash
The aim of this paper is to simulate leaching of metals from fly ash in different environmental conditions using ultrasound and microwave-assisted extraction techniques. Single-agent extraction and sequential extraction pro¬cedures were used to determine the levels of different metals leaching. The concentration of metals (Al, Fe, Mn, Cd, Co, Cr, Ni, Pb, Cu, As and Be) in fly ash extracts were measured by inductively coupled plasma-atomic emission spectrometry. Single-agent extractions of metals were conducted at sonication times of 10, ...leteći pepeo uglja, ekstrakcija sa jednim agensom, sekvencijalna ekstrakcija, mikrotalasi, ultratalasiAleksandra Tasić, Ivana Sredović-Ignjatović, Ljubiša Ignjatović, Marija Ilić, Mališa Antić. "Comparison of sequential and single extraction in order to estimate environmental impact of metals from fly ash" in Journal of the Serbian Chemical Society, National Library of Serbia (2016). https://doi.org/10.2298/JSC160307038T М23
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The influence of Al<sup>3+</sup>ion on porcine pepsin activity<i>in vitro</i>
The in vitro effect of Al3þ ions in the concentration range 1.7·1026M–8.7·1023M on pepsin activity at pH 2, via kinetic parameters and its electrophoretic mobility was evaluated. Kinetic study demonstrated the existence of an activation effect of Al3þ at pH 2 on pepsin molecule. Kinetic analysis with respect to concentrations of haemoglobin showed that Al3þ ions increase the maximal velocity (Vmax) and kcat values rather than apparent affinity for substrate (KS) implying the non-competitive nature of activation which indicated ...Vesna M. Pavelkić, Kristina R. Gopcević, Danijela Z. Krstić, Marija A. Ilić. "The influence of Al3+ion on porcine pepsin activityin vitro" in Journal of Enzyme Inhibition and Medicinal Chemistry, Informa UK Limited (2008). https://doi.org/10.1080/14756360701841095 М23
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Adsorption and Polymerization of Aniline on Cu(II)-Montmorillonite: Vibrational Spectroscopy and ab Initio Calculation
Batch adsorption experiments in the presence of oxygen were performed to study the interlayer reactions of aniline on Cu(II)-montmorillonite in aqueous solutions. At concentrations below a critical value of CC ) 2.6 mmol dm-3 only a colored Cu(II)-aniline complex is formed, characterized by a stability constant of log(Kassoc/dm3 mol-1) ) 1.5. At concentrations beyond Cc aniline polymerizes yielding a dark brown product, which is identified by two vibrational spectroscopy techniques, attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy and ...M. Ilić, E. Koglin, A. Pohlmeier, H. D. Narres, M. J. Schwuger. "Adsorption and Polymerization of Aniline on Cu(II)-Montmorillonite: Vibrational Spectroscopy and ab Initio Calculation" in Langmuir (2000). https://doi.org/ 10.1021/la000534d М21
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Structure, interaction with biomolecules, and cytotoxicity of copper (II) complexes chelating some Schiff base ligands
Aleksandar Mijatović, Angelina Z. Caković, Aleksandar Lolić, Olivera Klisurić, Marko N. Živanović, Dragana S. Šeklić, Snežana Sretenović, Marija Ilić, Jovana Bogojeski (2023)Cancer remains one of the world's deadliest diseases, claiming many lives each day. Transition metal complexes are leading candidates in developing anticancer agens with cisplatin used in chemotherapy worldwide. Copper, an endogenous metal in the human body, is especially attractive because of its typical redox biological activities and a relatively strong affinity to nucleobases. A series of Cu(II) complexes with ethane-1,2-diamine as the amine part and pentane-2,4-dione and/or 1-phenylbutane-1,3-dione, pentane-2,4-dione and/or 1,1,1- trifluoropentane-2,4-dione, or 1,1,1-trifluoropentane-2,4-dione and/or 1-phenylbutane-1,3-dione as the ...Aleksandar Mijatović, Angelina Z. Caković, Aleksandar Lolić, Olivera Klisurić, Marko N. Živanović, Dragana S. Šeklić, Snežana Sretenović, Marija Ilić, Jovana Bogojeski. "Structure, interaction with biomolecules, and cytotoxicity of copper (II) complexes chelating some Schiff base ligands" in Applied Organometallic Chemistry, Wiley (2023). https://doi.org/10.1002/aoc.7253 М21
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Surface functional groups and degree of carbonization of selected chars from different processes and feedstock
Marija Ilić, Franz-Hubert Haegel, Aleksandar Lolić, Zoran Nedić, Tomislav Tosti, Ivana Sredović Ignjatović, Andreas Linden, Nicolai D. Jablonowski, Heinrich Hartmann (2022)The knowledge ofthe structural and chemical properties of biochars is decisive for their application as technical products. For this reason, methods for the characterization of biochars that are generally applicable and allow quality control are highly desired. Several methods that have shown potential in other studies were used to investigate two activated carbons and seven biochars from different processes and feedstock. The chars were chosen to cover a wide range of chemical composition and structural properties as a hardness ...Biougalj, različiti procesi dobijanja, različite sirovine, površinski aktivne grupe, x-ray, FT-IR,XPSMarija Ilić, Franz-Hubert Haegel, Aleksandar Lolić, Zoran Nedić, Tomislav Tosti, Ivana Sredović Ignjatović, Andreas Linden, Nicolai D. Jablonowski, Heinrich Hartmann. "Surface functional groups and degree of carbonization of selected chars from different processes and feedstock" in PLOS ONE (2022). https://doi.org/10.1371/journal.pone.0277365 М22
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Actual contamination of the Danube and Sava rivers at Belgrade (2013)
Milan Antonijević, Marija Arsović, Josef Cáslavský, Vesna Cvetković, Predrag Dabić, Mladen Franko, Gordana Ilić, Milena Ivanovic, Nevena Ivanović, Milica Kosovac, Dragana Medić, Slobodan Najdanović, Milica Nikolić, Jovana Novaković, Tatjana Radovanović, Djurdjina Ranić, Bojan Šajatović, Gorica Špijunović, Ivana Stankov, Jelena Tošović, Polonca Trebse, Olivera Vasiljević, Jan Schwarzbauer (2014)rečni sistemi, stanje zagađenja, organski zagađivači, teški metali, skrining analize, non-target screeningMilan Antonijević, Marija Arsović, Josef Cáslavský, Vesna Cvetković, Predrag Dabić, Mladen Franko, Gordana Ilić, Milena Ivanovic, Nevena Ivanović, Milica Kosovac, Dragana Medić, Slobodan Najdanović, Milica Nikolić, Jovana Novaković, Tatjana Radovanović, Djurdjina Ranić, Bojan Šajatović, Gorica Špijunović, Ivana Stankov, Jelena Tošović, Polonca Trebse, Olivera Vasiljević, Jan Schwarzbauer. "Actual contamination of the Danube and Sava rivers at Belgrade (2013)" in Journal of the Serbian Chemical Society, National Library of Serbia (2014). https://doi.org/10.2298/JSC131105014A М23
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Režim pogranične reke Jerme
Vesna Ristić Vakanjac, Marina Čokorilo Ilić, Dušan Polomčić, Dragoljub Bajić, Boris Vakanjac, Peđa Kostić (2019)Reka Jerma izvire na Vlasinskoj visoravni u zoni Vlasinskog jezera, teče prema severozapadu padinama planine Gramade kroz selo Klisuru. Kod sela Strazimirovci prelazi u susednu državu Bugarsku, prolazi kroz Trnovsko ždrelo i zatim se ponovo vraća u Srbiju nedaleko od sela Petačinci. Uliva se kod sela Gradište u Nišavu. Ukupna dužina ove reke je 72.1 km od toga je 45.1 km formirala na teritoriji Srbije a preostali deo pripada Bugarskoj. Posmatrajući površine sliva nešto manje od 50 % pripada ...Vesna Ristić Vakanjac, Marina Čokorilo Ilić, Dušan Polomčić, Dragoljub Bajić, Boris Vakanjac, Peđa Kostić. "Režim pogranične reke Jerme" in Zbornik radova II Međunarodne naučne konferencije, Regionalni razvoj i prekogranična saradnja, Pirot, 2018., UO Privredna komora Pirot (2019) М33
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Metodologija određivanja vremena i putanje zagađivača na primeru zaštite izvorišta podzemnih voda
Dušan Polomčić, Dragoljub Bajić, Vesna Ristić Vakanjac, Jelena Ratković, Marina Čokorilo Ilić (2018)Analiza vremena putovanja potencijalnog zagađivača do bunara izvorišta podzemnih voda predstavlja veoma bitan segment kod upravljanja i zaštite podzemnih voda. Ova metodologija se zasniva na simulaciji kretanja nereagujuće čestice sa podzemnim vodama i poroznom sredinom (“idealna” čestica). Rezultati hidrodinamičkog modela, kojim se vrši simulacija režima podzemnih voda, predstavljaju osnovu za model praćenja “idealne” čestice. Postoje različiti softveri koji se koriste u hidrogeološkoj praksi za analizu problema zagađivača. U ovom radu korišćen je numerički kod Modpath, dok je za simulaciju ...upravljnje podzemnim vodama, zaštita podzemnih voda, hidrodinamički model, metoda praćenja „idealne“ čestice, modflow, modpath.Dušan Polomčić, Dragoljub Bajić, Vesna Ristić Vakanjac, Jelena Ratković, Marina Čokorilo Ilić. "Metodologija određivanja vremena i putanje zagađivača na primeru zaštite izvorišta podzemnih voda" in Zbornik radova nacionalne konferencije sa međunarodnim učešćem ekoremedijacija i ekonomska valorizacija vodnih resursa-modeli i primena, Fakultet za primenjenu ekologiju Futura, Univerzitet Singidunum, Beograd (2018) М33
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AR, CR and ARCR modeling for simulations and analyses of karst groundwater quality parameters
Although an invisible component of the hydrologic cycle, groundwater generally takes precedence over other water resources in the area of drinking water supply. Among groundwater resources, karst aquifers tend to be rich in sufficiently-accessible amounts of high-quality water. During most of the year, this water requires only disinfection prior to delivery to the end user. However, in many cases extreme rainfall and/or sudden snow melt results in transient turbidity, increase in bacterial count and temporary contamination (e.g. increase in ...autocorrelation, cross-correlation, autoregressive model, cross-regressive model, autocross regressive model, nitrates, Banja Spring, Serbia.Vesna Ristić-Vakanjac, Marina Ćokorilo-Ilić, Petar Papić, Dušan Polomčić, Radisav Golubović. "AR, CR and ARCR modeling for simulations and analyses of karst groundwater quality parameters" in Geološki anali Balkanskoga poluostrva, National Library of Serbia (2018). https://doi.org/10.2298/GABP1879071R М24
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Hydrographic and hydrological characterization of the Vodenička and Rosomačka rivers
Vesna Ristić Vakanjac, Marina Čokorilo Ilić, Dušan Polomčić, Dragoljub Bajić, Jelena Ratković (2017)The Visočica River rises in Bulgaria, on the Berovo Mountain. Its course in Bulgaria is 16.7 km long. It enters Serbia near the village of Donji Krivodol. Up to the village of Pakleštica, or the beginning of Lake Zavoj, its right-bank tributaries are the Krivodolštica, the Vodenička, the Rosomačka and the Dojkinačka. There are no left-bank tributaries. Among the tributaries, water levels and discharges are gauged only on the Dojkinačka River. The Vodenička had also been gauged but only ...Vesna Ristić Vakanjac, Marina Čokorilo Ilić, Dušan Polomčić, Dragoljub Bajić, Jelena Ratković. "Hydrographic and hydrological characterization of the Vodenička and Rosomačka rivers" in Pirotski zbornik, Pirot : Narodna biblioteka Pirot (2017). https://doi.org/10.5937/pirotzbor1742001R M53
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Uticaj voda Dunava na formiranje kvaliteta podzemnih voda u zoni Apatina
Područje Apatina u proteklom periodu često je pominjano u razvojnim vodoprivrednim strategijama kao potencijalno perspektivna lokacija za izgradnju izvorišta duž obale Dunava, koje bi moglo da ima regionalni značaj. Ovim rešenjem trebao bi se prevazići problem lošeg kvaliteta vode za piće na celom području severne Bačke, tako što bi se kvalitet podzemne vode poboljšao zahvatanjem infiltriranih rečnih voda u priobalju Dunava. Istraživanjima koja je Departman za hidrogeologiju, Rudarsko-geo¬loškog fakulteta vršio tokom poslednjih 13 godina na izvorištima za vodosnabdevanje grada ...Bojan Hajdin, Željko Kljajić, Vesna Ristić-Vakanjac, Milojko Lazić, Marina Čokorilo-Ilić. "Uticaj voda Dunava na formiranje kvaliteta podzemnih voda u zoni Apatina" in Tehnika, Centre for Evaluation in Education and Science (CEON/CEES) (2018). https://doi.org/10.5937/tehnika1806791H М52
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An example of karst catchment delineation for prioritizing the protection of an intact natural area
Vesna Ristić Vakanjac, Zoran Stevanović, Aleksandra Maran Stevanović, Boris Vakanjac, Marina Čokorilo Ilić (2015)Проучавано је карстни извор Перућац као главни дрен подручја планине Таре у западној Србији у циљу процене његовог режима отицања, резерви воде и дефинисања његове сливне површине. Извор се налази у североисточној, унутрашњој зони класичног динарског крша, коју карактерише доминантно проширење висококарстификованих тријаских кречњака, слабо развијена хидрографска мрежа са много понора и густе шуме. Тара је један од пет националних паркова у Србији. Циљ рада је био да се идентификује заштитна зона високог приоритета у оквиру очуваног природног подручја ...Vesna Ristić Vakanjac, Zoran Stevanović, Aleksandra Maran Stevanović, Boris Vakanjac, Marina Čokorilo Ilić. "An example of karst catchment delineation for prioritizing the protection of an intact natural area" in Environmental Earth Science (2015). https://doi.org/10.1007/s12665-015-4390-y М22
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Multi-Attribute Scenario Analysis of Protection of Drmno Open Pit Mine against Groundwater
Томислав Шубарановић, Слободан Вујић, Милинко Радосављевић, Бојан Димитријевић, Саша Илућ, Драгица Јагодић Крунић (2019)Томислав Шубарановић, Слободан Вујић, Милинко Радосављевић, Бојан Димитријевић, Саша Илућ, Драгица Јагодић Крунић. "Multi-Attribute Scenario Analysis of Protection of Drmno Open Pit Mine against Groundwater" in Journal of Mining Science, Pleiades Publishing Ltd (2019). https://doi.org/10.1134/S1062739119025564 М23
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Influence of geological substrate on runoff formation, a case study: small river catchments in southeastern Serbia of similar size and with comparable pluviographic regimes
Vesna Ristić Vakanjac, Veljko Marinović, Nikola Milovanović, Marina Čokorilo Ilić, Boris Vakanjac, Jugoslav Nikolić, Saša Bakrač (2022)We are witnessing climate change that is happening both, globally and, at the regionally - or local level. As a result of expected climate change in Southeast Europe, in the first place are the distributions of precipitation within the year (frequent extreme events are present) and then the increase in temperature, which already has a significant impact on evapotranspiration and runoff formed in a particular catchment area. In addition to climatic factors, the geological structure, i.e. the hydrogeological characteristics ...Vesna Ristić Vakanjac, Veljko Marinović, Nikola Milovanović, Marina Čokorilo Ilić, Boris Vakanjac, Jugoslav Nikolić, Saša Bakrač. "Influence of geological substrate on runoff formation, a case study: small river catchments in southeastern Serbia of similar size and with comparable pluviographic regimes" in XXII International Congress of the Carpathian Balkan Geological Association (CBGA), Sofia : Bulgarian Academy of Sciences (2022) М34
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The Content of Toxic Metals in Agricultural Produce near a Coal Mine: Case Study KCB in Lazarevac, Serbia
Праћење и анализа концентрација токсичних метала (олово и кадмијум) у земљишту и усевима указују на то да пољопривредно земљиште у Србији углавном није загађено, а квалитет земљишта је природно добар. Због тога су таква земљишта погодна за органску пољопривреду. Сви уочени случајеви контаминације токсичним металима су само локалне природе, а резултат су ђубрива и пестицида, комуналног отпада, издувних гасова, оближњих производних објеката, топионица, рудника, јаловишта итд. Локације овог типа морају бити редовно прати и процењује статус земљишта и усева. ...Ana Koprivica, Čedomir Beljić, Boris Vakanjac, Vesna Ristić Vakanjac, Marina Čokorilo Ilić. "The Content of Toxic Metals in Agricultural Produce near a Coal Mine: Case Study KCB in Lazarevac, Serbia" in Minerals, MDPI AG (2018). https://doi.org/10.3390/min8040131 М22
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Well completion of suspended and abandoned wells for the production of thermal and electrical energy
Marija Ilic, Dušan Danilović, Miroslav Crnogorac, Vesna Karović-Maričić, Lola Tomić, Anastasija Mirjanić (2024)opremanje bušotina, konzervirana bušotina, likvidirana bušotina, toplotna energija, električna energijaMarija Ilic, Dušan Danilović, Miroslav Crnogorac, Vesna Karović-Maričić, Lola Tomić, Anastasija Mirjanić. "Well completion of suspended and abandoned wells for the production of thermal and electrical energy" in Underground mining engineering, Belgrade : Faculty of Mining and Geology (2024) М51
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Određivanje teorijskog termičkog potencijala napuštenih naftnih i gasnih bušotina
Marija Ilić, Marija Živković, Dušan Danilović, Miroslav Crnogorac, Vesna Karović Maričić, Lola Tomić (2023)U Srbiji postoji oko 1.200 napuštenih naftnih i gasnih bušotina, koje imaju značajan potencijal za proizvodnju toplotne energije. Napuštene bušotine, u zavisnosti od lokacije gde se nalaze i termičkog potencija sa kojim raspolažu, se mogu koristiti za proizvodnju toplotne energije ili električne energije, ili za kombinovanu proizvodnju električne i toplotne energije. Toplotna enegija koja je proizvedena iz napuštenih bušotina dobija se korišćenjem geotermalne energije, pa se i električna i /ili toplotna energija koja bi se dobila korišćenjem takvih toplotnih izvora bilansira ...Marija Ilić, Marija Živković, Dušan Danilović, Miroslav Crnogorac, Vesna Karović Maričić, Lola Tomić. "Određivanje teorijskog termičkog potencijala napuštenih naftnih i gasnih bušotina" in Tehnika, Savez inženjera i tehničara Srbije (2023). https://doi.org/10.5937/tehnika2306667I М53
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Određivanje sadržaja kiselih funkcionalnih grupa na površini biougljeva primenom Boehm-ovih titracija
Aleksandar D. Krstić, Aleksandar Đ. Lolić, Marija A. Ilić, Aleksandar M. Mijatović, Snežana J. Zlatanović, Zoran P. Nedić, Vesna M. Pavelkić (2015)Biougalj se dobija pirolizom iz organskog otpada. Smatra se ,,modifikatorom'' zemljišta i koristi se kao đubrivo i kao rezervoar za skladištenje ugljenika. Kvantifikacija funkcionalih grupa je važna zbog hemijske reaktivnosti biougljeva koji imaju uticaj na svojstva zemljišta. U istraživanju su korišćena 3 uzorka biouglja različitog porekla i jedan referentni, aktivni ugalj. Sadržaj kiselih funkcionalnih grupa je određivan titracijom po Boehm-u na dva načina: uvođenje N2 tokom titracije i tretman sa BaCl2. Optimizovan je način pripreme tri Boehm ova rastvora ...Aleksandar D. Krstić, Aleksandar Đ. Lolić, Marija A. Ilić, Aleksandar M. Mijatović, Snežana J. Zlatanović, Zoran P. Nedić, Vesna M. Pavelkić. "Određivanje sadržaja kiselih funkcionalnih grupa na površini biougljeva primenom Boehm-ovih titracija" in 52. savetovanja Srpskog hemijskog društva, Srpsko hemijsko društvo (2015) М64
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Savremeni pristupi u upravljanju rizikom mehanizacije na površinskim kopovima
Kirin Snežana, Pantelić Milorad, Miljanović Igor. "Savremeni pristupi u upravljanju rizikom mehanizacije na površinskim kopovima" in XLIII Simpozijum o operacionim istraživanjima, Beograd:Medija centar Odbrana (2016): 539-544 M63
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Interaction of sodium dodecylsulfate (SDS) with homoionic montmorillonites: adsorption isotherms and metal-ion release
The interaction of dodecylsulfate anions (DS−) with homoionic Ca-, Mg-, Ni-, Cu-, Cd-, Pb- and Fe-montmorillonites were investigated. Mg- and Cd-montmorillonite do not adsorb DS−, and an anion exchange at the edges of the clay mineral does not take place. Three different adsorption processes are identified on the other montmorillonites: i) Fe-montmorillonite is covered with amorphous iron hydroxide, and DS−-anions are bound at positively charged sites. ii) On Ca- and Pb-montmorillonite DS− is precipitated as Me(DS)2. iii) On Ni- ...M. Ilic, J. Gonzalez, A. Pohlmeier, H. D. Narres, M. J. Schwuger. "Interaction of sodium dodecylsulfate (SDS) with homoionic montmorillonites: adsorption isotherms and metal-ion release" in Colloid Polymer Science, Springer Science and Business Media LLC (1996). https://doi.org/10.1007/BF00656626 М22