Претрага
588 items
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Sastav i teksture minerala FeO-Fe2O3-TiO2 sistema u vulkanskim stenama i porfirskim ležištima bakra Borske metalogenetske zone
Aleksandar Luković (2021)Proces obrazovanja minerala iz sistema FeO-Fe2O3-TiO2 u uzorcima vulkanskih stena i porfirskih orudnjenja borske zone prikazan kroz pojavu magnetita/hematita i njihovih alteracija. Minerali ove zone su ispitivani optičkim metodama (odbijena i propuštena svetlost), SEM-EDS/BSD, XRPD, LA-ICP-MS metodama. Rezultati ispitivanja su, pored glavnih Fe – Ti oksida, otkrili prisustvo ferijskog ilmenita u hornblenda andezitima I vulkanske faze kao i magnetita sa većim koncetracija Cr u zoni zlotske magnetne anomalije. Ispitivanje uzoraka iz bušotina porfirskih sistema borske zone otkriva postojanje nekoliko ...Aleksandar Luković. Sastav i teksture minerala FeO-Fe2O3-TiO2 sistema u vulkanskim stenama i porfirskim ležištima bakra Borske metalogenetske zone, Beograd : [A. Luković], 2021
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Overcoming the Low Oral Bioavailability of Deuterated Pyrazoloquinolinone Ligand DK-I-60-3 by Nanonization: A Knowledge-Based Approach
Jelena R. Mitrović , Branka Divović-Matović, Daniel E. Knutson, Jelena B. Ðoković, Aleksandar Kremenović, Vladimir D. Dobričić, Danijela V. Randjelović, Ivana Pantelić, James M. Cook, Miroslav M. Savić, Snežana D. Savić (2021)Poor water solubility of new chemical entities is considered as one of the main obstacles in drug development, as it usually leads to low bioavailability after administration. To overcome these problems, the selection of the appropriate formulation technology needs to be based on the physicochemical properties of the drug and introduced in the early stages of drug research. One example of the new potential drug substance with poor solubility is DK-I-60-3, deuterated pyrazoloquinolinone, designed for the treatment of various neuropsychiatric ...Jelena R. Mitrović , Branka Divović-Matović, Daniel E. Knutson, Jelena B. Ðoković, Aleksandar Kremenović, Vladimir D. Dobričić, Danijela V. Randjelović, Ivana Pantelić, James M. Cook, Miroslav M. Savić, Snežana D. Savić. "Overcoming the Low Oral Bioavailability of Deuterated Pyrazoloquinolinone Ligand DK-I-60-3 by Nanonization: A Knowledge-Based Approach" in Pharmaceutics, MDPI, Basel, Switzerland (2021). https://doi.org/10.3390/pharmaceutics13081188
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Curcumin nanonization using an alternative small-scale production unit: selection of proper stabilizer applying basic physicochemical consideration and biological activity assessment of nanocrystals
Ines Nikolić, Jelena Antić-Stanković, Dragana Božić, Danijela Ranđelović, Bojan Marković, Dominique Jasmin Lunter, Aleksandar Kremenović, Miroslav Savić, Snežana Savić (2020)As the number of poorly soluble drugs is increasing, nanocrystals have become very interesting due to wide range of application possibilities. Curcumin was used as a model active ingredient in this work. Even though it has many proven positive effects, due to its physicochemical issues, its possibilities have not been fully exploited. The goal of this work was to select optimal conditions for a top-down method for curcumin nanosuspension production, and to perform their comprehensive characterization applying complementary methodologies: ...Ines Nikolić, Jelena Antić-Stanković, Dragana Božić, Danijela Ranđelović, Bojan Marković, Dominique Jasmin Lunter, Aleksandar Kremenović, Miroslav Savić, Snežana Savić. "Curcumin nanonization using an alternative small-scale production unit: selection of proper stabilizer applying basic physicochemical consideration and biological activity assessment of nanocrystals" in Review on advanced materials science, Walter de Gruyter GmbH (2020). https://doi.org/10.1515/rams-2020-0043
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Differently shaped nanocrystalline (Fe, Y)3O4 and its adsorption efficiency toward inorganic arsenic species
Biljana P Dojčinović, Boštjan Jančar, Lotfi Bessais, Aleksandar Kremenović, Nataša P Jović-Jovičić, Predrag T Banković, Dalibor M Stanković, Miloš Ognjanović, Bratislav V Antić (2019)Herein we report effects of partial substitution of Fe3+ by Y3+ in magnetite (Fe3O4) on morphology and inorganic arsenic species adsorption efficiency of the Fe3−xYxO4 nanoparticles formed. The series of Fe3−xYxO4 (x=0.00, 0.042 and 0.084, labeled as Y00, Y05 and Y10, respectively) was synthesized using co-precipitation followed by microwave-hydrothermal treatment (MW) at 200°C. With increase of yttrium content(xvalue), both the morphological inhomogeneity of the samples and the fraction of spinel nanorods as compared to spinel pseudospherical particles increased. By ...Biljana P Dojčinović, Boštjan Jančar, Lotfi Bessais, Aleksandar Kremenović, Nataša P Jović-Jovičić, Predrag T Banković, Dalibor M Stanković, Miloš Ognjanović, Bratislav V Antić. "Differently shaped nanocrystalline (Fe, Y)3O4 and its adsorption efficiency toward inorganic arsenic species" in Nanotechnology, IOP Publishing (2019). https://doi.org/10.1088/1361-6528/ab3ca2
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Micro- to nanoscale textures of gold in arsenopyrite and scorodite from the As-Au-Bi assemblage of Drenjak locality (Serbia)
Ivana Jelić, Janez Zavašnik, Marina Lazarov, Alena Zdravković, Sabina Kovač, Jovica Stojanović, Aleksandar Pačevski (2023)Arsenopyrite and pyrite are important carriers of Au that is present in the form of microscopic and “invisible” gold. Such gold can be expected to be released upon the process of oxidation of these sulfides. In studied gold mineralization at Drenjak, related to the granitoids of the Oligocene-Miocene Kopaonik Ore District, the main arsenopyrite-pyrite-(bismuthinite) sulfide assemblage was formed in the quartz bodies and partly replaced by scorodite (FeAsO4·2H2O) and Bi-arsenate. With only up to 5 ppm of gold recorded ...Ivana Jelić, Janez Zavašnik, Marina Lazarov, Alena Zdravković, Sabina Kovač, Jovica Stojanović, Aleksandar Pačevski. "Micro- to nanoscale textures of gold in arsenopyrite and scorodite from the As-Au-Bi assemblage of Drenjak locality (Serbia)" in Ore Geology Reviews, Elsevier BV (2023). https://doi.org/10.1016/j.oregeorev.2023.105711
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Implementataion of the modern technologies in order to control the drilling an blasting works
U ovom radu prikazanе su mogućnosti primene savremenih tehnologija u oblasti bušenja i miniranja pri površinskoj eksploataciji ležišta mineralnih sirovina, problemi koji se javljaju prilikom izvođenja radova, kao i moguća rešenja i prednosti primene ovih tehnologija.Miljan Gomilanović, Stefan Milanović, Nikola Stanić, Aleksandar Doderović, Nikola Simić. "Implementataion of the modern technologies in order to control the drilling an blasting works" in Copper, Bor : Institut za rudarstvo i metalurgiju Bor (2018)
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Тeхничка и биолошка рекултивација као технолошки процес рада на спољашњем одлагалишту површинског копа „Дрмно“ РБ Костолац
Александар Милојковић (2024)У овом мастер раду приказани су општи и детаљни подаци о спољашњем одлагалишту површинског копа ,,Дрмно“ Костолачког угљеног басена и детаљна концепција коришћења равних и косих површина намењених за рекултивацију.Такође, приказан је и опис спољашњег одлагалишта са тачно утврђеним границама површина које ће бити предмет рекултивације. Као специјалистички део овог мастер рада приказано је извођачко техничко пројектно решење реализације техничке и биолошке рекултивације. Усвојеним решењем приказана је технологија формирања одлагалишних етажа, техника извођења радова применом технолошке усвојене механизације и ...Дрмно, површински коп, спољашње одлагалиште, техничка рекултивација, биолошка рекултивација, динамика радова, предмер и предрачунАлександар Милојковић. Тeхничка и биолошка рекултивација као технолошки процес рада на спољашњем одлагалишту површинског копа „Дрмно“ РБ Костолац, 2024
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Analiza parametara bušenja i miniranja na površinskom kopu „Čokoće“ - Novi Popovacu softverskom paketu O-Pitblast
Aleksandar Đorđević (2024)Bušenje i miniranje predstavlja prvu fazu u otkopavanju čvrstih mineralnih sirovina, kako u podzemnoj tako i u površinskoj eksploataciji.Bušenjem i miniranjem vrši se njihovo odvajanje iz masiva i drobljenje na komade neophodne krupnoće.Uprkos razvijenoj mehanizaciji, praktično jedini efikasni postupak otkopavanja čvrstih stenskih masiva zasnovan je na primeni eksploziva.Ležište krečnjaka “Čokoće” kao i cementara “Moravacem” nalaze se u Popovcu kod Paraćina u centralnom delu Srbije. Preduzeće datira još iz davne 1928.godine, koje je tada, u improvizovanim pećima, peklo i proizvodilo kreč.Od 2015. ...Aleksandar Đorđević. Analiza parametara bušenja i miniranja na površinskom kopu „Čokoće“ - Novi Popovacu softverskom paketu O-Pitblast, 2024
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Characterisation, axial anisotropy, and formation conditions of celestine minerals from the Jabal Eghei (Nuqay) late Neogene – Pleistocene volcanic province, southeastern edge of the Sirt Basin, southern Libya: Constraints on the mineralogical geothermometer – ERRATUM
Pavle Tančić, Maja Milošević, Darko Spahić, Bojan Kostić, Aleksandar Kremenović, Maja Poznanović-Spahić, Jovan Kovačević (2024)karakterizacija celestina, aksijalna anizotropija, uslovi formiranja, Jabal Eghei (Nukai), vulkanska provincija južna LibijaPavle Tančić, Maja Milošević, Darko Spahić, Bojan Kostić, Aleksandar Kremenović, Maja Poznanović-Spahić, Jovan Kovačević. "Characterisation, axial anisotropy, and formation conditions of celestine minerals from the Jabal Eghei (Nuqay) late Neogene – Pleistocene volcanic province, southeastern edge of the Sirt Basin, southern Libya: Constraints on the mineralogical geothermometer – ERRATUM" in Mineralogical Magazine, Mineralogical Society (2024). https://doi.org/10.1180/mgm.2024.12
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The influence of alkyl polyglucosides (and highly ethoxylated alcohol boosters) on the phase behavior of a water/toluene/technical alkyl polyethoxylate microemulsion system
Marija Ilić, Franz-Hubert Haegel, Vesna Pavelkić, Dragan Zlatanović, Snežana Nikolić-Mandić, Aleksandar Lolić, Zoran Nedić (2016)mikroemulzija, toluen, alkil poliglukozid oksoalkohol etoksilat, pojačivač efikasnosti, dijagrami “ribe”Marija Ilić, Franz-Hubert Haegel, Vesna Pavelkić, Dragan Zlatanović, Snežana Nikolić-Mandić, Aleksandar Lolić, Zoran Nedić. "The influence of alkyl polyglucosides (and highly ethoxylated alcohol boosters) on the phase behavior of a water/toluene/technical alkyl polyethoxylate microemulsion system" in Chemical Industry and Chemical Engineering Quarterly, National Library of Serbia (2016). https://doi.org/ 10.2298/CICEQ141105015I
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Geochemical characterization of sediments from the archaeological site Vinča – Belo Brdo, Serbia
Gorica Veselinović, Dragana Životić, Kristina Penezić, Milica Kašanin-Grubin, Nevenka Mijatović, Jovana Malbašić, Aleksandra Šajnović (2020)Gorica Veselinović, Dragana Životić, Kristina Penezić, Milica Kašanin-Grubin, Nevenka Mijatović, Jovana Malbašić, Aleksandra Šajnović. "Geochemical characterization of sediments from the archaeological site Vinča – Belo Brdo, Serbia" in CATENA, Elsevier BV (2020). https://doi.org/10.1016/j.catena.2020.104914
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Are volcaniclastics bad enough to make badlands?
Nevena Antić, Milica Kašanin-Grubin, László Bertalan, Violeta Gajić, Lazar Kaluđerović, Nevenka Mijatović, Branimir Jovančićević (2024)Nevena Antić, Milica Kašanin-Grubin, László Bertalan, Violeta Gajić, Lazar Kaluđerović, Nevenka Mijatović, Branimir Jovančićević. "Are volcaniclastics bad enough to make badlands?" in CATENA, Elsevier BV (2024). https://doi.org/10.1016/j.catena.2024.108448
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How bad volcano-clastic badlands actually are?
Antić Nevena, Kašanin-Grubin Milica, Bertalan Laszlo, Gajić Violeta, Kaluđerović Lazar, Mijatović Nevenka, Jovančićević Branimir (2023)Antić Nevena, Kašanin-Grubin Milica, Bertalan Laszlo, Gajić Violeta, Kaluđerović Lazar, Mijatović Nevenka, Jovančićević Branimir. "How bad volcano-clastic badlands actually are?" in 23rd European Meeting on Environmental Chemistry, EMEC23, Budva, Montenegro, December 3rd-December 6th, 2023, Chemical Society of Montenegro (2023)
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Идентификација црвеног Азо пигмента (литол црвене) – кључ за одговоре на сва конзерваторско-рестаураторска питања која је отворила Енформел слика Лазара Возаревића „Без назива”
Вања Јовановић, Александар Кременовић, Филип Коломбан, Џон Милан ван дер Берг, Снежана Вучетић, Вељко Џикић (2022)Галерија „Лазар Возаревић” спровела је велики пројекат конзервације и рестаурације слика Лазара Возаревића из различитих периода уметниковог стварања. Прелиминарна истраживања слике „Без назива” из 1961. године, чији је површински боје нислој значај но деградирао на нетипичан начин, спровела је лабораторија MONARIS са Универзитета Сорбона. Утврђено је да се ова слика по саставу својих слојева разли кује од осталих слика из ове фазе сликаревог рада. Опсежне физичкохемијске анализе су се паралелно одвијале у лабораторијама у Србији. Добијени резултати су ...литол црвена, раманска спектроскопија, ФТИЦ, рендгенска дифракција на праху, превентивна конзервација, виртуелна рестаурацијаВања Јовановић, Александар Кременовић, Филип Коломбан, Џон Милан ван дер Берг, Снежана Вучетић, Вељко Џикић. "Идентификација црвеног Азо пигмента (литол црвене) – кључ за одговоре на сва конзерваторско-рестаураторска питања која је отворила Енформел слика Лазара Возаревића „Без назива”" in Smartart Conference proceedings 2022, Belgrade, Serbia, 23.-25. September 2021 , Универзитет уметности у Београду, Факултет примењених уметности, Београд (2022). https://doi.org/https://doi.org/10.18485/smartart.2022.2
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Size–strain line-broadening analysis of anatase/brookite (TiO<sub>2</sub>)-based nanocomposites with carbon (C): XRPD and Raman spectroscopic analysis
Aleksandar Kremenović, Mirjana Grujić-Brojčin, Nataša Tomić, Vladimir Lazović, Danica Bajuk-Bogdanović, Jugoslav Krstić, Maja Šćepanović (2022)A size-strain line-broadening analysis of the XRPD patterns and Raman spectra for two anatase/brookite (TiO2)-based nanocomposites with carbon (C) was carried out and the results compared with those of a similar sample free of carbon. The crystal structures and microstructures of anatase and brookite, as well as their relative abundance ratio, have been refined from XRPD data by the Rietveld method (the low amount of carbon is neglected). The XRPD size-strain analysis resulted in reliable structure and microstructure results ...Materials Chemistry, Metals and Alloys, Atomic and Molecular Physics, Optics, Electronic, Optical and Magnetic MaterialsAleksandar Kremenović, Mirjana Grujić-Brojčin, Nataša Tomić, Vladimir Lazović, Danica Bajuk-Bogdanović, Jugoslav Krstić, Maja Šćepanović. "Size–strain line-broadening analysis of anatase/brookite (TiO2)-based nanocomposites with carbon (C): XRPD and Raman spectroscopic analysis" in Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials, International Union of Crystallography (IUCr) (2022). https://doi.org/10.1107/S2052520622001731
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Crystallographic, spectroscopic, thermal and computational studies of polymeric cobalt(II)–mellitate complex with 2,2′-bipyridine
Orange single crystals of new polymeric cobalt(II) complex {[Co(bipy)(H2O)4]2[Co(μ-mell)(H2O)2]·10H2O}n, 1, were synthesized by slow evaporation method at room temperature (bipy = 2,2′-bipyridine, mell = hexaanion of mellitic acid) and its crystal structure was determined by single-crystal X-ray diffraction. The complex 1 was characterized based on elemental analysis, FTIR spectroscopy and thermal (TG/DTA) analysis followed by computational analysis of noncovalent interactions and quantum chemical calculations of interaction energies. In 1, two crystallographically different Co(II) atoms adopt a deformed octahedral geometry, ...Lidija Radovanović, Dušan P. Malenov, Marko V. Rodić, Aleksandar Kremenović, Jelena Rogan. "Crystallographic, spectroscopic, thermal and computational studies of polymeric cobalt(II)–mellitate complex with 2,2′-bipyridine" in Journal of Molecular Structure, Elsevier BV (2021). https://doi.org/10.1016/j.molstruc.2021.132202
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Influence of Post-Synthesis Treatments on the Properties of Brushite/Monetite Powders
Željko Radovanović, Lidija Radovanović, Aleksandar Kremenović, Đorđe Janaćković, Rada Petrović (2022)Dicalcium phosphate (DP) materials, of which brushite and monetite were the most known, have been intensively studied for several decades because of excellent resorptive and osteoconductive properties that can satisfy the requirements needed for various medical applications, such as bone cements, coatings of metallic implants and bone grafts ...Željko Radovanović, Lidija Radovanović, Aleksandar Kremenović, Đorđe Janaćković, Rada Petrović. "Influence of Post-Synthesis Treatments on the Properties of Brushite/Monetite Powders " in Second International Conference on Electron Microscopy of Nanostructures ELMINA 2022, August 22nd–26th, 2022, Belgrade, Serbia, Serbian Academy of Sciences and Arts Knez Mihailova 35, 11000 Belgrade, Serbia (2022)
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Waste rocks and medieval slag as sources of environmental pollution in the area of the Pb-Zn Mine Rudnik (Serbia)
Alena Zdravković, Vladica Cvetković, Kristina Šarić, Aleksandar Pačevski, Aleksandra Rosić, Suzana Erić (2020)The new geochemical and mineralogical data of soil and water from the Pb-Zn Rudnik Mine area (central Serbia) reveal that the areas close to the mining sites and those located remotely from them are both affected by significant pollution by toxic elements, especially As, Pb, Ni and Cr. We, therefore, propose that two main sources are generally responsible for the current state of pollution in this area. The first is the material from waste rock dumps (WRDs) in which ...Alena Zdravković, Vladica Cvetković, Kristina Šarić, Aleksandar Pačevski, Aleksandra Rosić, Suzana Erić. "Waste rocks and medieval slag as sources of environmental pollution in the area of the Pb-Zn Mine Rudnik (Serbia)" in Journal of Geochemical Exploration, Elsevier BV (2020). https://doi.org/10.1016/j.gexplo.2020.106629
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Production of electricity from coal-fired power plants and accompanying CO2 emissions: comparison of EU-27 and US
Even in the third decade of the 21st century, large power plants are still responsible for more than half of the electricity production in Europe and US. They predominantly use fossil fuels in their work, which results in the emission of pollutants into the air, soil and water. In addition to the production of electric energy, fossil fuels, including coal, are used for industrial purposes. Although the use of coal, especially in the countries of the European Union, is ...Uroš Djorgovski, Aleksandar Madžarević, Predrag Jovančić. "Production of electricity from coal-fired power plants and accompanying CO2 emissions: comparison of EU-27 and US" in International Conference on Global Energy and Climate Change - ICGRECC-23, New York, 2023, Research Galery- Science Leagues (2023)
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Protective channels to prevent a potential rockfall during blasting
Miljan Gomilanović, Stefan Milanović, Nikola Stanić, Miloš Živanović, Saša Stepanović, Aleksandar Doderović, Tanja Stanković (2024)Drilling and blasting at the Open Pit North Mining District takes place in the complex geological and urban environment conditions. The proximity of the city requires the performance of mining works with application the numerous and strict protection measures against the negative impact of mining. This paper presents a protection measure against the possible movement of loose pieces of rock that may occur as a result of blasting by creating the protective channels.open pit north mining district, rockfall during blasting, special protection measures, protective channelsMiljan Gomilanović, Stefan Milanović, Nikola Stanić, Miloš Živanović, Saša Stepanović, Aleksandar Doderović, Tanja Stanković. "Protective channels to prevent a potential rockfall during blasting" in The 55th international october conference on mining and metallurgy, Kladovo, Serbia, 15 - 17 october 2024, Mining and metallurgy institute Bor (2024). https://doi.org/10.5937/IOC24087T