Претрага
531 items
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A tool for identifying the criticality in the disordered systems with metastable dynamics
Svetislav Mijatović, Dragutin Jovković, Sanja Janićević, Stefan Graovac, Đorđe Spasojević. "A tool for identifying the criticality in the disordered systems with metastable dynamics" in Physica A: Statistical Mechanics and its Applications, Elsevier BV (2021). https://doi.org/10.1016/j.physa.2021.125883
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Photocatalytic Activity of the V2O5 Catalyst toward Selected Pharmaceuticals and Their Mixture: Influence of the Molecular Structure on the Efficiency of the Process
Sanja J. Armaković, Aleksandra Jovanoski Kostić, Andrijana Bilić, Maria M. Savanović, Nataša Tomić, Aleksandar Kremenović, Maja Šćepanović, Mirjana Grujić-Brojčin, Jovana Ćirković, Stevan Armaković (2023)Due to the inability of conventional wastewater treatment procedures to remove organic pharmaceutical pollutants, active pharmaceutical components remain in wastewater and even reach tap water. In terms of pharmaceutical pollutants, the scientific community focuses on -blockers due to their extensive (over)usage and moderately high solubility. In this study, the photocatalytic activity of V2O5 was investigated through the degradation of nadolol (NAD), pindolol (PIN), metoprolol (MET), and their mixture under ultraviolet (UV) irradiation in water. For the preparation of V2O5, facile ...DFT analysis, metoprolol, nadolol, nanomaterial characterization, photocatalysis, pindolol, β-blocker... 10478—10488. [CrossRef] Mousavi, M.; Yazdi, S.T.; Khorrami, G. Structural, Optical and Magnetic Characterization of Vanadium Pentoxide Nanoparticles Synthesized in a Gelatin Medium. J. Nanostruct. 2021, 11, 105-113. Das, T.; Tosoni, S.; Pacchioni, G. Structural and electronic properties of bulk and ultrathin ...
... assigned to o-V>Os structure [30,31]: ~104(A„), 146(Bye / Bae), 198 (A„/Bx»), 285 (Biy / Bae), 306 (A), 406 (Ay), 483 (A„), 528 (A„), 701 (Biy/ B»g), and 995 cm_! (Ae). A good agreement of the position of the Raman mode at 995 cm ! with corresponding bulk value, together with the absence of ~840 ...
... the Tauc plot [35] was obtained by using the following equation: (hv F(R))!" = A(hv — E,) where h is Planck's constant, v—photon"s frequency, E, g—bandgap, A—proportional con- stant, and the n factor depends on the nature of the electron transition. They equal 1/2 or 2 for allowed direct and ...Sanja J. Armaković, Aleksandra Jovanoski Kostić, Andrijana Bilić, Maria M. Savanović, Nataša Tomić, Aleksandar Kremenović, Maja Šćepanović, Mirjana Grujić-Brojčin, Jovana Ćirković, Stevan Armaković. "Photocatalytic Activity of the V2O5 Catalyst toward Selected Pharmaceuticals and Their Mixture: Influence of the Molecular Structure on the Efficiency of the Process" in Molecules, MDPI AG (2023). https://doi.org/10.3390/molecules28020655
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Natural two-dimensional pyrophyllite: Nanoscale lubricant, electrical insulator and easily-machinable material
Borislav Vasić, Radoš Gajić, Ivana Milošević, Žarko Medić, Marina Blagojev, Marko Opačić, Aleksandar Kremenović, Dejan Lazić (2022)Pyrophyllite, with the chemical formula Al2Si4O10(OH)2, is a naturally occurring and abundant van der Waals mineral belonging to the group of phyllosilicates. It is very soft, layered crystal used for sculpting and an excellent electrical and thermal insulator aimed for the operation at high pressure and temperature. Here, for the first time, two-dimensional (2D) pyrophyllite obtained by both mechanical and liquid phase exfoliation is presented and investigated at the nanoscale. The layered structure provides low friction coefficient of around ...Atomic force microscopy, Insulating properties, Nanofriction and wear, Natural two dimensional materials, Phyllosilicates, PyrophylliteBorislav Vasić, Radoš Gajić, Ivana Milošević, Žarko Medić, Marina Blagojev, Marko Opačić, Aleksandar Kremenović, Dejan Lazić. "Natural two-dimensional pyrophyllite: Nanoscale lubricant, electrical insulator and easily-machinable material" in Applied Surface Science, Elsevier BV (2022). https://doi.org/10.1016/j.apsusc.2022.155114
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Mitigating hydrate formation in onshore gas wells: A case study on optimization techniques and prevention
Gas wells, particularly those situated onshore, play a vital role in the global energy sector by supplying a significant portion of natural gas. However, operational challenges, notably gas hydrate formation, pose substantial issues, leading to complications such as flowline blockages and unexpected well shutdowns. Gas hydrates, crystalline structures resembling ice, ...Gas Well, Gas Hydrate Formation, Well Modeling, Well Performance Optimization, Choke Position Adjustments, Methanol InjectionMilica Ješić, Bojan Martinović, Stefan Stančić, Miroslav Crnogorac, Dušan Danilović. "Mitigating hydrate formation in onshore gas wells: A case study on optimization techniques and prevention" in Underground Mining Engineering, Beograd : Rudarsko-geološki fakultet (2023)
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Facing Engineering Problems in the Fragile Karst Environment
Parise Mario, Closson Damien, Gutierrez Francisco, Stevanović Zoran. "Facing Engineering Problems in the Fragile Karst Environment" in Engineering Geology for Society and Territory - Volume 5, Proceedings of the XII IAEG Congress, Torino 2014 5, :Springer International (2014): 479-482. https://doi.org/10.1007/978-3-319-09048-1_92
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Cenozoic brittle tectonic history of the Kopaonik area (Internal Dinarides, Serbia)
Mladenović Ana, Trivić Branislav (2014)Mladenović Ana, Trivić Branislav. "Cenozoic brittle tectonic history of the Kopaonik area (Internal Dinarides, Serbia)" in Proceedings of the XX CBGA Congress, Tirana, Albania, 23 – 29 September 2014 Jan-16, Tirana, Albania:Buletini i Shkencave Gjeojoglike (2014): 19-19
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Faze formiranja grafičke dokumentacije rudnika sa površinskom eksploatacijom
Milutinović Aleksandar, Ganić Aleksandar, Miljanović Igor. "Faze formiranja grafičke dokumentacije rudnika sa površinskom eksploatacijom" in Zbornik radova XL Simpozijuma o operacionim istraživanjima Symopis, 09-12.09.2013. 1, Zlatibor, Srbija:University of Belgrade, Faculty of Organizational Sciences, Belgrade (2013): 751-756
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Vrednosni aspekt razlaganja proizvodnje u integrisanom privrednom društvu „Kolubare“ i „Tent“
Maksimović Svetomir, Miljanović Igor, Živojinović Miljanović Ivana. "Vrednosni aspekt razlaganja proizvodnje u integrisanom privrednom društvu „Kolubare“ i „Tent“" in Zbornik radova XL Simpozijuma o operacionim istraživanjima Symopis, 09-12.09.2013. - no. -, Zlatibor, Srbija:University of Belgrade, Faculty of Organizational Sciences, Belgrade (2013): 762-767. https://doi.org/-
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Novi paleomagnetski podaci iz tercijarnih magmatita Fruške gore, Srbija
Cvetkov Vesna, Lesić Vesna, Vasković Nada. "Novi paleomagnetski podaci iz tercijarnih magmatita Fruške gore, Srbija" in Geološki anali Balkanskoga poluostrva no. 73, Beograd:Rudarsko-geološki fakultet (2012): 99-108. https://doi.org/10.2298/GABP1273099C
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Mechanosynthesis and structural characterization of nanocrystalline Ce1–Y O2– (x=0.1–0.35) solid solutions
Martin Fabián, Bratislav Antić, Vladimír Girman, Milica Vučinić-Vasić, Aleksandar Kremenović, Shigeru Suzuki, Horst Hahn, Vladimír Šepelák (2015)A series of nanostructuredfluorite-type Ce1–xYxO2–δ (0rxr0.35) solid solutions, prepared via highenergy milling of the CeO2/Y2O3mixtures, are investigated by XRD, HR-TEM, EDS and Raman spectroscopy. For thefirst time, complementary information on both the long-range and short-range structural features of mechanosynthesized Ce1–xYxO2–δ, obtained by Rietveld analysis of XRD data and Raman spectroscopy, is provided. The lattice parameters of the as-prepared solid solutions decrease with increasing yttrium content. Rietveld refinements of the XRD data reveal increase in microstrains in the host ceria ...Martin Fabián, Bratislav Antić, Vladimír Girman, Milica Vučinić-Vasić, Aleksandar Kremenović, Shigeru Suzuki, Horst Hahn, Vladimír Šepelák. "Mechanosynthesis and structural characterization of nanocrystalline Ce1–Y O2– (x=0.1–0.35) solid solutions" in Journal of Solid State Chemistry, Elsevier BV (2015). https://doi.org/10.1016/j.jssc.2015.06.027
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Subsurface dams as a solution for supplementary recharge and groundwater storage in karst aquifers in arid areas
Stevanović Zoran (2014)Stevanović Zoran. "Subsurface dams as a solution for supplementary recharge and groundwater storage in karst aquifers in arid areas" in Engineering Geology for Society and Territory - Volume 5, Proceedings of the XII IAEG Congress, Torino 2014 5, :Springer International (2014): 471-474. https://doi.org/10.1007/978-3-319-09048-1_90
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Predlog novog koncepta za algoritamski pristup upravljanju rizicima u površinskoj eksploataciji
Miljanović Igor, Milutinović Aleksandar, Kirin Snežana, Gajić Grozdana. "Predlog novog koncepta za algoritamski pristup upravljanju rizicima u površinskoj eksploataciji" in Zbornik radova XL Simpozijuma o operacionim istraživanjima Symopis, 09-12.09.2013., Zlatibor, Srbija:University of Belgrade, Faculty of Organizational Sciences, Belgrade (2013): 757-761
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Investigation of quantitative indicators of anisotropy based on longitudinal elastic waves propagation velocities with uncertainty
... 00 0 5 10 15 20 25 30 D e g re e o f a n is o tr o p y , % Serial number of sample Degree of anisotropy for each special isotropic sample including all of the directions DIi,max DIi,min 0.00 50.00 100.00 150.00 200.00 250.00 0 5 10 15 20 25 30 D e g re e o f a n is o tr o ...
... ТR 33029 under the auspices of the Ministry of Education, Science and Technological Development, Republic of Serbia. REFERENCES ALEFELD G. and MAYER G. (2000) Interval analysis: theory and applications. Journal of Computational and Applied Mathematics, 121, pp. 424–464. ESBERT R. M. (2007) ...
... isotropic and anisotropic sample including all of the directions KIi,mean KAi,mean 0.0 20.0 40.0 60.0 80.0 100.0 120.0 140.0 1 2 3 D e g re e o f a n is o tr o p y , % Number of directions Degree of anisotropy for each special direction including all of the isotropic samples ...Miloš Gligorić, Jelena Majstorović, Suzana Lutovac. "Investigation of quantitative indicators of anisotropy based on longitudinal elastic waves propagation velocities with uncertainty" in Underground Mining Engineering, Belgrade : University of Belgrade - Faculty of Mining and Geology (2018). https://doi.org/10.5937/PodRad1832001G
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Минерагенија зеолитских туфова Србије
Vladan Kašić (2018-02-05)Лежишта наших зеолитских туфова (Златокоп, Игрош, Јабланица 1, Беочин, Топоница и Сланци) која су овде била предмет детаљних истраживања, просторно и генетски везана су за вулканске и вулканокластичне стене маринских средина сенонске и неогенске старости и језерске седименте неогене старости и настала су као продукт девитрификације вулканског стакла.Током лабораторијских испитивања при изради ове докторске дисертације, примењене су следеће аналитичке методе: оптичка испитивања петрографских препарата; рендгенска дифракција праха (XRD); скенирајућа електронска микроскопија (СЕМ метода); хемијска карактеризација зеолитских туфова у оквиру ...... олите и Ca-хојландите. Капацитети катјонске измене наших зеолитских туфова имају вредности од 122 до 166 meq/100 g, а спољашњи капацитети се крећу од 8,0 meq/100 g до 10,5 meq/100 g. У оквиру ове дисертације дата је детаљна карактеризација природних зеолита најзначајнијих српских лежишта, где ...
... Ca-клиноптилолите и Ca-хојландите. Капацитети катјонске измене зеолитских туфова имају вредности од 96 до 166 meq/100 g, а спољашњи капацитети се крећу од 8,0 meq/100 g до 10,5 meq/100 g У овом поглављу дата је детаљна карактеризација природних зеолита најзначајнијих српских лежишта (Кашић и др., 2017) ...
... имуноглобулина Г у крвном серуму код телади из групе 1 у односу на 2 била је виша 6-ог, 24-ог и 48-ог сата, док је статистичка значајност разлика средњих вредности установљена 6-ог сата по рођењу (15±4:10±5 g/l, p<0.05). Исти однос средњих вредности концентрације имуноглобулина G у крвном серуму ...Vladan Kašić. "Минерагенија зеолитских туфова Србије" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2018-02-05)
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Upper Miocene Serbian lignites - insights from petrological and biomarker composition
Stojanović Ksenija, Životić Dragana, Šajnović Aleksandra, Cvetković Olga. "Upper Miocene Serbian lignites - insights from petrological and biomarker composition" in Book of Abstracts of the Communications presented to the 26th International Meeting on Organic Geochemistry 2, Tenerife, Spain:Institutional Repository of “Consejo Superior de Investigaciones Científicas” (CSIC) (2013): 218-219
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Environmental Aspects of Proposed Engineering Solution for Inter-basin Transfer in East Herzegovina
Čokorilo Marina, Stevanović Zoran, Ristić-Vakanjac Vesna. "Environmental Aspects of Proposed Engineering Solution for Inter-basin Transfer in East Herzegovina" in Engineering Geology for Society and Territory - Volume 5, Proceedings of the XII IAEG Congress, Torino 2014 5, :Springer International (2014): 515-519. https://doi.org/10.1007/978-3-319-09048-1_99
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Low-temperature evolution of the Serbo-Macedonian massif (SE Serbia): evidence from Ap and Zr fission-track analysis
Antić Milorad, Kounov Alexandre, Trivić Branislav. "Low-temperature evolution of the Serbo-Macedonian massif (SE Serbia): evidence from Ap and Zr fission-track analysis" in Proceedings of the XX CBGA Congress, Tirana, Albania, 23 – 29 September 2014 Jan-15, Tirana, Albania:Buletini i Shkencave Gjeojoglike (2014): 135-135
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Impact of the variability of technological parameters on the effective reclaiming capacity of bucket wheel reclaimers
Komljenović D., Nurić S., Kričak Lazar, Pantelić M.. "Impact of the variability of technological parameters on the effective reclaiming capacity of bucket wheel reclaimers" in Proceedings of the 20th International Conference on Material Hnadling, Constructions and Logistics MHCL 2012, Beograd,Srbija:University of Belgrade, Faculty of Mechanical Engineeering (2012): 135-141
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Interaction between binding materials—the cause of damage to gabbro stone on the monument to the unknown soldier (Serbia)
Matović Vesna, Vasković Nada, Erić Suzana, Srećković Batoćanin Danica. "Interaction between binding materials—the cause of damage to gabbro stone on the monument to the unknown soldier (Serbia)" in Environmental Earth Sciences 60 no. 6, :Springer (2010): 1153-1164. https://doi.org/10.1007/s12665-009-0257-4
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Sinteza i strukturna karakterizacija mikroporoznih arsenata i fosfata
Sabina Z. Kovač (2015-09-28)Predmet rada i istraživanja ove doktorske disertacije su sinteza i strukturnekarakteristike novih kristalnih arsenata i fosfata koji sadrže Mg, K, Ca, Mn, Fe, Co, Ni,Cu, Zn, Sr, Ba i druge katjone. U strukturama arsenata i fosfata, AsO4- i PO4-tetraedrinajčešće se vezuju sa tetraedarski ili oktaedarski koordinisanim katjonima prelaznihmetala formirajući otvorene strukture (slojeve ili 3D mreže) sa širokim opsegomrazličitih topologija. U šupljinama ili porama u obliku povezanih ili nepovezanihkanala, tunela, kaveza i međuslojnog prostora mogu se ugraditi različiti vanmrežni joni(obično ...... 72 h t=170 ºC, hlađeno 96 h, pHpre = 6, pHposle = s.p. 0,1514 g:0,2097 g:0,1524 g Ven = 0,1 ml 17 As2O3 5ZnO·2CO3·4H2O+3As2O5·5H2O+Fe2O3+en+H2O 72 h t=170 ºC, hlađeno 96 h, pHpre = 11, pHposle = s.p. 0,1534 g:0,2116 g:0,1508 g Ven = 2,5 ml *s.p. suva proba po završetku sinteze Sinteza ...
... Sabina Z. Kovač 149 6. LITERATURA 1. Altomare, A., Burla, M. C., Camalli, M., Cascarano, G. L., Giacovazzo, C., Guagliardi, A., Moliterni, A. G. G., Polidori, G., Spagna, R. (1999) J. Appl. Crystallogr. 32, 115–119. 2. Anderson, J. B., Kostiner, E., Ruszala, F. A. (1981) ...
... Mattei, G., Taraba, J., Zak, Z. (2006) Z. Kristallogr. 221, 649–655. 35. Catti, M., Ferraris, G., Ivaldi, G. (1981) Z. Kristallogr. 156, 70–71. 36. Caullet, P., Paillaud, J. L., Simon-Masseron, A., Soulard, M., Patarin, J. (2005) C. R. Chim. 8, 245. 37. Cheetham, A. K., Férey, G., Loiseau ...Sabina Z. Kovač. "Sinteza i strukturna karakterizacija mikroporoznih arsenata i fosfata" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2015-09-28)