Претрага
486 items
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Refinement of waste phosphogypsum from Prahovo, Serbia: characterization and assessment of application in civil engineering
Josip Išek, Lazar Kaluđerović, Nikola Vuković, Maja Milošević, Ivana Vukašinović, Zorica Tomić (2020)... Chemical compositions (wt.%) of the samples investigated, obtained by SEM-EDS analysis. Elements PG1 PG2 PGIR PG1P o 47.07 46.99 51.65 46.69 F BDL BDL 0.56 BDL Na BDL BDL 0.08 BDL Mg BDL BDL 0.03 BDL Al 0.26 0.25 0.77 0.30 Si 2.23 2.25 41.19 0.06 P 0.34 0.31 0.65 0.14 s 21.77 21.67 1.15 ...
... dihy- drate is the principal phase present in raw phosphogypsum sam- ples, which is formed according to the chemical reaction in Eq. (6): Cayjo(POx);F+ + 10H>SOa + 20H,O — 10CaSOu · 2H,O + 6H5PO, + 2HF (6) Quartz is the predominant Si-bearing phase, originating from the parent phosphate rock, as ...
... Brushite formed similarly to gypsum, which is not surprising as these are isostructural mineral phases (see Eq. (7)) (Mikheev, 1957): Cayo(POa),F> + 9H>SOa + 20H2 O — CaHPO, · 2H,O + 9CaSO, · 2H2,O + 5H,PO, + 2HF (7) During acid digestion of aluminosilicate minerals, AP* ions are first released ...Josip Išek, Lazar Kaluđerović, Nikola Vuković, Maja Milošević, Ivana Vukašinović, Zorica Tomić. "Refinement of waste phosphogypsum from Prahovo, Serbia: characterization and assessment of application in civil engineering" in Clay Minerals, Cambridge University press (2020). https://doi.org/10.1180/clm.2020.11
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The interaction of organoselenium trans-palladium(II) complexes toward small-biomolecules and CT-DNA
Serija organoselenijum trans-paladijum(II) kompleksa 1 (bis(2-(fenilselanilmetil)oksolan)dihloropaladijum(II)), 2 (bis(2-(fenilselanilmetil)oksan)dihloropaladijum(II)) i 3 (bis(2) ,2-dimetil-3-(fenilselanil)oksan)dihloropaladijum(II)) su korišćeni za ispitivanje reaktivnosti ovog specifičnog tipa kompleksa prema različitim bio-molekulima. Ovaj sistem je od posebnog interesa jer se jako malo zna o supstitucionim reakcijam organoselenijum paladijum(II) kompleksa sa trans konfiguracijom. Zamena koordinovanog hlorida sa serijom malih bio-molekula (l-Met, l-His, l-Cis, GSH i 5′-GMP) proučavana je pod uslovima pseudo-prvog reda kao funkcija koncentracije nukleofila i temperature korišćenjem tehnika zaustavljenog toka. Rezultati za proučavane komplekse ukazuju da ...Vera M. Divac, Aleksandar Mijatović, Marina D. Kostić, Jovana Bogojeski. "The interaction of organoselenium trans-palladium(II) complexes toward small-biomolecules and CT-DNA" in Inorganica Chimica Acta, Elsevier BV (2017). https://doi.org/10.1016/j.ica.2017.07.012
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Introduction to special section: Characterization of hydrocarbon and geothermal resource potential and carbon sequestration opportunities of the Pannonian Basin
Balázs Németh, Gábor Tari, Gábor Bada, Dejan Radivojević, Bruno Tomljenovic, Csaba Krézsek. "Introduction to special section: Characterization of hydrocarbon and geothermal resource potential and carbon sequestration opportunities of the Pannonian Basin" in Interpretation, AAPG SEG (2018). https://doi.org/10.1190/INT-2017-1207-SPSEINTRO.1
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Laboratory testing of fly ash
Fly ash is one of the most common waste materials created by burning of coal. It is composed of smaller particles, consisting mainly of aluminosilicate glass, mullite and quartz, which are collected by electrostatic separators (filter) of gaseous products arising from the combustion of coal. This paper presents the pozzolanic properties, mechanical properties, chemical and mineral composition of fly ash obtained in the combustion process in a power plant Nikola Tesla A (PPNT A) with the addition of a ...chemical composition, fly ash, mechanical properties, mineral properties, pozzolanic properties, X-ray diffraction... Classification of fly ash to ASTM C 618 [17] Characteristics Class Natural pozzolan F C N SiO2+Al2O3+Fe2O3 min (%) 70 50 70 SO3 max (%) 5 5 4 Humidity max (%) 3 3 3 Loss on ignition max (%) 6 6 10 Class F of fly ash is silicate, or silicate and aluminat material whose selfhardening effect ...
... Based on certain oxide content, fly ash can be divided into: Table 3 Classification of fly ash to ASTM C-618 [17] Class Ash Chemical composition F Sour Very low in Ca, slather Fe, (SiO2+Al2O3+Fe2O3) > 70 (%) C Alkaline High content CaO (SiO2+Al2O3+Fe2O3) > 70 (%) The main flaw of ASTM ...
... ash in accordance with ASTM C-618 amended classification according to McCarthy (1990) [17] Class Ash Chemical composition McCarthy – CaO / % F Sour Very low in Ca, slather Fe, (SiO2+Al2O3+Fe2O3)>70(%) <10 10 ÷ 20 C Alkaline High content CaO (SiO2+Al2O3+Fe2O3)>70(%) >20 2.3 Pozzolanic ...Miloš Šešlija, Aleksandra Rosić, Nebojša Radović, Milinko Vasić, Mitar Đogo, Milovan Jotić. "Laboratory testing of fly ash" in Tehnički vijesnik (2016). https://doi.org/10.17559/TV-20150317171035
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Hyperpycnites within the Devonian-Carboniferous flysch of the Carpatho-Balkanides (Kostadinovica, eastern Serbia)
Miloš Radonjić (2020)This study presents new discoveries of vascular plants and the trace fossil Dictyodora liebeana (GEINITZ) from the Devonian–Carboniferous Kučaj-Zvonce flysch of the Carpatho-Balkanides and the implications of this fossil association for its sedimentary setting. The occurrence of the described plant debris in a deep-marine environment indicates the presence of hyperpycnites within the siliciclastic turbidites exposed at the Kostadinovica locality. The sedimentological data and the characteristics of the fossil material support the proposed model in which the sediment was at ...Mississippian flora, Dictyodora liebeana (GEINITZ), hyperpycnites, Kučaj-Zvonce flysch, Carpatho-Balkanides... adpression floras from central and northwestern Europe.– Zitteliana A, 54, 39–52. doi: 10.5282/ubm/epub.22322 HUBMANN, B., EBNER, F., FERRETTI, A., KIDO, E., KRAINER, K., NEUBAUER, F., SCHÖNLAUB, H.-P. & SUTTNER, T.J. (2014): The Paleozoic Era(them), 2nd edition.– In: PILLER, W.E. [ed.]: The lithostratigraphic ...
... inter- Figure 3. A sedimentological column of the Kostadinovica succession. Grain size is shown on the right-hand side of the column (si – siltstones, f – fine- grained sandstone, m – medium-grained sandstone, c – coarse-grained sand- stone). The sedimentary sequences or beds are designated by the letter ...
... tenerrimum ETTINGSHAUSEN. e) Accumulation of filiform detritus and a specimen similar to Rhodeopteridium leptofoliatum VAN AMEROM (marked by white arrows). (f ) Filiform Rhodea sp. type foliage. (g, h) Lepidodendron sp. G eo lo g ia C ro a ti ca Geologia Croatica 73/3138 Figure 10. Various aspects ...Miloš Radonjić. "Hyperpycnites within the Devonian-Carboniferous flysch of the Carpatho-Balkanides (Kostadinovica, eastern Serbia)" in Geologia Croatica, Croatian Geological Survey (2020). https://doi.org/10.4154/gc.2020.13
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A survey of greenhouse gases production in central European lignites
Anna Pytlak, Anna Szafranek-Nakonieczna, Weronika Goraj, Izabela Śnieżyńska, Aleksandra Krążała, Artur Banach, Ivica Ristović, Mirosław Słowakiewicz, Zofia Stępniewska (2021)... A., Janssens-Maenhout, G., Jensen, K.M., Joos, F., Kleinen, T., Krummel, P.B., Langenfelds, R.L., Laruelle, G.G., Liu, L., MacHida, T., Maksyutov, S., McDonald, K.C., McNorton, J., Miller, P.A., Melton, J.R., Morino, I., Müller, J., Murguia- Flores, F., Naik, V., Niwa, Y., Noce, S., O’Doherty, S., Parker ...
... czna b, Weronika Goraj b, Izabela Śnieżyńska c, Aleksandra Krążała c, Artur Banach b, Ivica Ristović d, Mirosław Słowakiewicz c,e, Zofia Stępniewska f a Institute of Agrophysics, Polish Academy of Sciences, ul. Doświadczalna 4, 20-290 Lublin, Poland b Institute of Biological Sciences, The John Paul ...
... Faculty of Mining and Geology, University of Belgrade, Djusina 7, 11000 Belgrade, Serbia e Kazan Federal University, Kremlovskaya 18, 420008 Kazan, Russia f Department of Biochemistry and Environmental Chemistry, The John Paul II Catholic, University of Lublin, Konstantynów 1 I, 20-708 Lublin, Poland H I ...Anna Pytlak, Anna Szafranek-Nakonieczna, Weronika Goraj, Izabela Śnieżyńska, Aleksandra Krążała, Artur Banach, Ivica Ristović, Mirosław Słowakiewicz, Zofia Stępniewska. "A survey of greenhouse gases production in central European lignites" in Science of The Total Environment, Elsevier (2021). https://doi.org/10.1016/j.scitotenv.2021.149551
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Utilizing sewage wastewater heat in district heating systems in Serbia: effects on sustainability
Marija Živković, Dejan Ivezić (2021)Transformation of the heating sector is recognized as being essential for ensuring reliable and afordable energy services provided with reduced consumption of energy sources and diminished impact on the environment and less import dependency. The possibility of utilizing energy sources that otherwise would be wasted needs to be considered and treated as a big advantage of district heating systems. Despite many advantages, sewage wastewater heat is still a mostly unused resource at the global level and a totally unused ...рекуперација топлоте из отпадних вода, систем даљинског грејања, топлотне пумпе, енергетске уштеде, емисија угљендиоксида, енергетска безбедност, Србија... Jesper M, Schlosser F, Pag F, Walmsley TG, Schmitt B, Vajen K (2021) Large-scale heat pumps: uptake and performance mod- elling of market-available devices. Renew Sustain Energy Rev 137:110646. https:// doi. org/ 10. 1016/j. rser. 2020. 110646 Kollmann R, Neugebauer G, Kretschmer F, Truger B, Kindermann ...
... emission · Energy security · Serbia Nomenclature DH District heating GHG Greenhouse gases HP Heat pump f p Primary energy factor E i Energy content of input to the system of the ith energy carrier f p,i Primary energy factor of the ith energy carrier Q ext Externally supplied heat fp,ext Primary ...
... 10. 1016/j. rser. 2018. 08. 005 Meggers F, Leibundgut H (2011) The potential of wastewater heat and exergy: decentralized high-temperature recovery with a heat pump. Energy Build 43(4):879–886. https:// doi. org/ 10. 1016/j. enbui ld. 2010. 12. 008 Meunier F (2004) Sorption contribution to climate ...Marija Živković, Dejan Ivezić. "Utilizing sewage wastewater heat in district heating systems in Serbia: effects on sustainability" in Clean Technologies and Environmental Policy, Springer Science and Business Media LLC (2021). https://doi.org/10.1007/s10098-021-02063-6
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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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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... functions F(R) [34] were calculated as F(R) = (1 — R)Ž/2R, where R is the diffuse reflectance of the Molecules 2023, 28, 655 6of18 'V»Os sample. Taking into account that F(R) is proportional to the absorption coefficient , the Tauc plot [35] was obtained by using the following equation: (hv F(R)) ...
... | — j E,„= 2.24 eV (direct) 0.000 MOEA LN KLLUNLLLL 10 15 20 25 30 35 40 45 50 55 Pv{(eV) Figure 6. Transformed Kubelka-Munk functions (F(R) hv)Ž and (F(R) hv)1/? assuming,direct and indirect energy bandgap in the V»Os sample, respectively. It should be noted that different V)»Os structures ...
... PIN showed higher efficiency than MET and NAD in the presence and absence of a V»Os catalyst. Namely, 64% of PIN was eliminated by photocatalytic F 1.0 (Figure 10). At In addition to the fact that it is necessary to overlap at least partially the radiation degradation within 120 min. spectrum ...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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Characterization of the eastern Suva Planina Mt. karst aquifer (SE Serbia) by time series analysis and stochastic modelling
Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary ChangeBranislav Petrović, Veljko Marinović, Zoran Stevanović. "Characterization of the eastern Suva Planina Mt. karst aquifer (SE Serbia) by time series analysis and stochastic modelling" in Environmental Earth Sciences, Springer Science and Business Media LLC (2023). https://doi.org/10.1007/s12665-023-10911-5
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Polymorphism and photoluminescence properties of K3ErSi2O7
alkalni silikati elemenata retkih zemalja, silikati lantanoida, polimorfizam, fotoluminescencija, kristalna strukturaPredrag Dabić, Marko G. Nikolić, Sabina Kovač, Aleksandar Kremenović. "Polymorphism and photoluminescence properties of K3ErSi2O7" in Acta Crystallographica Section C Structural Chemistry, International Union of Crystallography (IUCr) (2019). https://doi.org/10.1107/S2053229619011926
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Indeksi kontrole održavanja i korišćenja rotornog bagera
Razvoj površinske eksploatacije se u velikom stepenu zasniva na svestranoj mehanizaciji rudarskih radova. Kako bi se zadovoljili potrebni kapaciteti, neophodna je primena savremene mehanizacije, velikih kapaciteta i pouzdanosti u radu. Naime, sa stepenom povećanja mehanizovanosti radova smanjuje se broj zaposlenih radnika, povećava produktivnost rada, smanjuju troškovi po jedinici proizvoda, a samim tim i povećava ekonomičnost površinske eksploatacije. Predmet istraživanja su rotorni bageri SRs 1200 koji predstavljaju samohodne mašine kontinuiranog dejstva namenjene za otkopavanje jalovine i korisne supstance na površinskim ...Jovana Mitrović, Predrag Jovančić, Dragan Ignjatović, Stevan Đenadić, Filip Miletić. "Indeksi kontrole održavanja i korišćenja rotornog bagera" in XI Međunarodna konferencija "Ugalj i kritični minerali 2023", CCM 2023, Zlatibor, 11-14. oktobar 2023., Beograd : Jugoslovenski komitet za površinsku eksploataciju (2023)
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Split-Desktop software for the analysis of fragment size distribution of blasted rock mass
Milanka Negovanović, Lazar Kričak, Stefan Milanović, Jovan Marković, Nikola Simić, Snežana Ignjatović (2023)Drobljenje stena je najvažniji pokazatelj u proceni efekata miniranja pri proizvodnom miniranju u površinskoj eksploataciji. Stepen drobljenja stena ima veliki uticaj na efikasnost daljih operacija utovara, transporta, drobljenja i mlevenja. Optimalno drobljenje stena pri proizvodnom miniranju utiče na smanjenje ukupnih troškova proizvodnje. Stoga je pouzdana procena veličine drobljenja odminirane stenske mase veoma važno pitanje, ne samo u operacijama miniranja, već i u rudarskoj proizvodnji. Za predviđanje distribucije veličine komada odminirane stenske mase postoje različiti empirijski modeli. KUZ-RAM model omogućava ...Milanka Negovanović, Lazar Kričak, Stefan Milanović, Jovan Marković, Nikola Simić, Snežana Ignjatović. "Split-Desktop software for the analysis of fragment size distribution of blasted rock mass" in 9th International Conference Mining and environmental protection, Sokobanja, Serbia, 24 – 27. May 2023, Belgrade : University of Belgrade, Faculty of Mining and Geology (2023)
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Composition of organic matter and thermal maturity of Mesozoic and Cenozoic sedimentary rocks in East Herzegovina (External Dinarides, Bosnia and Herzegovina)
This paper presents the first data on the organic matter and thermal maturity of Mesozoic and Cenozoic sedimentary rocks in the East Herzegovina region of the External Dinarides. Representative, organic-rich samples from outcropping sedimentary rocks of different ages in the area (Triassic to Neogene) were selected and analysed. The organic matter was studied by Rock-Eval pyrolysis and under the microscope in reflected non-polarized light and incident blue light. The results obtained show the presence of different types of organic ...... Aleksić, N., Stojanović, K., Groß, D. & Sachsenhofer, R. F., 2018. Depositional environment and hydrocarbon source po- tential of the Lower Miocene oil shale deposit in the Aleksinac Basin (Serbia). Organic Geochemistry, 115: 93–112. Behar, F., Beaumont, V., & De B. Penteado, H.L., 2001. Rock-Eval ...
... Espitalié, J., Deroo, G. & Marquis, F., 1985. La pyrolyse Rock-Eval et ses applications. Deuxième partie. Oil & Gas Science and Technology. L’Institut Français du Pétrole Energies Nouvelles, 40: 755–784. Espitalié, J., Laporte, J. L., Madec, M., Marquis, F., Leplat, P., Poulet, J. & Boutefeu, ...
... Marquis, F. & Pillot, D., 1998. Rock-Eval 6 applica- tions in hydrocarbon exploration, production, and soil con- tamination studies. Revue de l’Institut Français du Pétrole, EDP Sciences, 53: 421–437. Mandić, O., De Leeuw, A., Vuković, B., Krijgsman, W., Harzhauser, M. & Kuiper, K. F., 2011. P ...Nikoleta Aleksić, Aleksandar Kostić, Miloš Radonjić. "Composition of organic matter and thermal maturity of Mesozoic and Cenozoic sedimentary rocks in East Herzegovina (External Dinarides, Bosnia and Herzegovina)" in Annales Societatis Geologorum Poloniae (2021). https://doi.org/10.14241/asgp.2021.16
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Badenske školjke jugoistočnog oboda Panonskkog basena (Centralni Paratetis)
Gordana M. Jovanović (2014-12-05)Rad obuhvata detaljnu studiju badenskih školjaka koje potiču sa terenajugoistočnog oboda Panonskog basena (Centralni Paratetis). Proučavani su lokaliteti naprostorima Srbije (Fruška gora, Golubac, okolina Beograda, Aranđelovca, Koceljeva,Loznica) i severoistočne Bosne (Ugljevik). Pored taksonomske analize i paleontološkihopisa bivalvija, u radu je dat i spisak revidovanih vrsta koje su do sada pronađene usedimentima badenskog kata istraživanog terena. Do sada je ukupno poznato 41familija, 108 rodova i 174 taksona. Identifikovano je 170 bivalvijskih vrsta, međukojima su neke prvi put konstatovane na ovim ...školjke, baden, Panonski basen (Centralni Paratetis), stratigrafija,paleoekologija, paleogeografija, paleobiogeografija... disertacija 219 Rögl, F. i Steininger, F. F. 1984. Neogene Paratethys, Mediterranean and Indo−Pacific seaways. Implications for the paleobiogeography of marine and terrestrial biotas. In: P. Brenchley (ed.), Fossils and Climate, London Wiley. 171-200. Rögl, F. i Steininger, F.F. 1983. Vom ...
... 953-1224. Steininger, F. 1963. Die Molluskenfauna aus dem Burdigal (Unter - Miozän) von Fels am Wagram in Niederösterreich. Denk schriften der Österreichischen Akademie der Wisse Naschaften, Mathematisch - Naturwissenschaftliche Klasse, 110: 1 – 8. Steininger, F. F., Rögl, F., Hochuli, R i Müller ...
... Paleobiology, 26, 4: 103-147. Bistricic, A. i Jenko, K 1985. Area No. 224 b1: Transtethyan Trench “Corridor”, YU. In: Steininger, F. F., Senes, J., Kleemann, K. and Rögl, F., (eds.). Neogene of the Mediterranean Tethys and Paratethys. Stratigraphic correlation tables and sediment distribution maps ...Gordana M. Jovanović. "Badenske školjke jugoistočnog oboda Panonskkog basena (Centralni Paratetis)" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2014-12-05)
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Spatial assessment of the areas sensitive to degradation in the rural area of the municipality Čukarica
Nature and Landscape Conservation, Soil Science, Agronomy and Crop Science, Water Science and TechnologyNatalija Momirović, Ratko Kadović, Veljko Perović, Miloš Marjanović, Aleksandar Baumgertel. "Spatial assessment of the areas sensitive to degradation in the rural area of the municipality Čukarica" in International Soil and Water Conservation Research, Elsevier BV (2019). https://doi.org/10.1016/j.iswcr.2018.12.004
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Some models for determination of parameters of the soil oscillation law during blasting operations
... observed function. Surface S confined by continuous curve y = f (x), x-axis, and vertical lines x = a and x = b, if f (x) ě 0 for a ď x ď b (Figure 1), as the definite integral of the function f (x), obtains the following: S “ b ż a f pxq dx (17) Energies 2016, 9, 617 5 of 15 ...
... ≥ ≤ ≤ ‐ Figure 1. Surface S confined by continuous curve y = f (x), x-axis, and vertical lines x = a and x = b. When carrying out blasting operations, we register (measure) at suitable measuring points the values ...
... namely if: Ri`1 ´ Ri “ hi pi “ 1, 2, . . . , N ´ 1q (21) Energies 2016, 9, 617 5 of 15 a b X Figure 1. Surface S confined by continuous curve y = f(x), x-axis, and vertical lines x = a and x = b. When carrying out blasting operations, we register (measure) at suitable measuring points the values ...Suzana Lutovac, Dragan Medenica, Branko Gluščević, Rade Tokalić, Čedomir Beljić. "Some models for determination of parameters of the soil oscillation law during blasting operations" in Energies, Basel, Switzerland : MDPI (2018). https://doi.org/10.3390/en9080617
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BEYOND 2020 - Geology explorations and open pit activities affectation in reclamation designing in Kolubara Coal Mines (KCM) Serbia, new considerations
Geology explorations in KCM runs from 1936. year up to these days and still ongoing. Results in >7,200 drill holes with ≈600,000 m of core drilling and gave lignite ore resources of > 4,1Bt, which 1,15Bt are excavated since 1986. of XIX up to early years of XXI century. For further mining operations in open pits stay 1,5Bt of lignite. Under waste heaps are ≈80 km2, additional 85 km2 should be filled. All of that masses/areas were, are ...Bojan Dimitrijević, Bogoljub Vučković, Radmila Gaćina. "BEYOND 2020 - Geology explorations and open pit activities affectation in reclamation designing in Kolubara Coal Mines (KCM) Serbia, new considerations" in 17th International Conference of the open and underwater mining of minerals, Sts. Constantine and Helena Resort, Varna, 18-22 September, Bulgaria, Sofia, Bulgaria : Scientific and Technical Union of Mining, Geology and Metallurgy, (2023)
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Parametri zbijanja komunalnog otpada određeni različitim laboratorijskim metodama
Jovana M Janković Pantić, Dragoslav R Rakić, Irena G Basarić Ikodinović, Tina D Đurić, Snežana Bogdanović (2021)Zbijanje komunalnog otpada predstavlja jednu od osnovnih faza korišćenja komunalne deponije. Zbog toga je kao i kod drugih nasutih građevina, veoma korisno odrediti parametre zbijanja: maksimalnu suvu zapreminsku težinu (dmax) i optimalnu vlažnost (wopt). Dobijeni rezultati mogu da posluže prilikom projektovanja kapaciteta deponije kao i prilikom definisanja obradivosti otpada. U dosadašnjoj praksi najčešći način određivanja parametra zbijanja je standardna metoda (Proktorov opit) koja se koristi u mehanici tla, uz eventualnu redukciju energije zbijanja. Međutim, različiti tretmani komunalnog otpada na ...... dva upotrebljen otpad koji је višc puta zbijan, dok је za jedan korišćen svež otpad. Rezultati opita su prikazani na slici 3. LI 5 = 8 FI а F 3 F š | 5 а 8 : al | 7 | — кнуа лашбена (02:1.65) О s proba 3 • proba4 + proba S(svežotpad) 35 T Т ) о 50 100 - 150 200 Optimalna vlažnost ...
... podataka је da maksimalna suva zapreminska težina raste uz prisustvo sitnozrnije komponente u otpadu (sagorivi otpad) [2]. > e 3 [ — /?дшт,г;нпкиш· ф 100 10 20 30 4 50 Optimalna vlažnost W.„(%) Su va za pr em in sk a te ži na Y an ax (k N/ m” ) (а Proktorovog opita za sagoriv komunalni ...
... U-I Proktorov opšt sa maljem sa бА јебиоа 7 | = += Џ-2 Proktorov ори sa maljem sa čiljcima KOE = Х ~ 36). TWR ——— ) Sr-70% (Gs=2 19) F || Sr-60% (Gy=2,19) ~ Su va za pr em in sk a te ži na Yd (k N/ m? ) vlažnost W (%) Slika 10. Prikaz rezultata istraživanja Proktorovog ...Jovana M Janković Pantić, Dragoslav R Rakić, Irena G Basarić Ikodinović, Tina D Đurić, Snežana Bogdanović . "Parametri zbijanja komunalnog otpada određeni različitim laboratorijskim metodama" in Građevinski kalendar, Savez građevinskih inženjera Srbije (2021)
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Linear-motor plunger pump increases lifting efficiency
Bojan Martinović, Dušan Đekić, Dušan Danilović, Pavel Isaev. "Linear-motor plunger pump increases lifting efficiency" in Oil & Gas Journal (2022)