Претрага
823 items
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Uticaj proširenja nuklearne elektrane “Pakš” (Mađarska) na resurse podzemnih voda u Vojvodini
Bojan Hajdin, Dušan Polomčić (2016)... available at: www.dr.rgf.bg.ac.rs B. HAJDIN i dr. UTICAJ PROŠIRENJA NUKLEARNE ELEKTRANE „PAKŠ“ (MAĐARSKA)... TEHNIKA – RUDARSTVO, GEOLOGIJA I METALURGIJA 67 (2016) 4 545 Uticaj proširenja Nuklearne elektrane “Pakš” (Mađarska) na resurse podzemnih voda u Vojvodini BOJAN B. HAJDIN, Univerzitet u Beogradu ...
... Polomčić D, Stevanović Z, Sorajić S, Milanović S, Hajdin B, Kljajić Ž, Održivo korišćenje srpsko-ma- đarskih međugraničnih vodnih tela, Vodoprivreda, br. 246-248, p.p. 223-235. Beograd, 2010. [6] Stevanović Z, Lazić M, Polomčić D, Milanović S, Hajdin B, Papić P, Sorajić S, Kljajić Ž, Sustainable development ...
... imajući u vidu da je Dunav tranzitna reka, vrlo dobro hidraulički povezana sa pod- zemnim vodama. Slika 1 – Položaj nuklearne elektrane “Pakš” B. HAJDIN i dr. UTICAJ PROŠIRENJA NUKLEARNE ELEKTRANE „PAKŠ“ (MAĐARSKA)... 546 TEHNIKA – RUDARSTVO, GEOLOGIJA I METALURGIJA 67 (2016) 4 Pored poznavanja ...Bojan Hajdin, Dušan Polomčić. "Uticaj proširenja nuklearne elektrane “Pakš” (Mađarska) na resurse podzemnih voda u Vojvodini" in Tehnika 66 no. 5, Beograd : Savez inženjera i tehničara (2016): 777-786. https://doi.org/10.5937/tehnika1604545H
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The Newton method for solving nonlinear equations based on aggregation operators
Nebojša M. Ralević, Dejan Ćebić (2019)Nebojša M. Ralević, Dejan Ćebić. "The Newton method for solving nonlinear equations based on aggregation operators" in XLVI International Symposium on Operational Research SYM-OP-IS, Kladovo, 15-18.9.2019, Универзитет у Београду (2019)
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Application of ERT in the study of debris-flow source area: Case study Selanac debris flow
Dragana Đurić, Jelka Krušić, Biljana Abolmasov. "Application of ERT in the study of debris-flow source area: Case study Selanac debris flow" in 11th Congress of the Balkan Geophysical Society, Volume 2021, Online-Romania, 10 -14. Oct 2021,, European Association of Geoscientists & Engineers (2021). https://doi.org/10.3997/2214-4609.202149BGS15
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Determining the Groundwater Balance and Radius of Influence Using Hydrodynamic Modeling: the Case Study of the Groundwater Source “Šumice” (Kikinda, Serbia)
A groundwater flow model was developed to simulate groundwater extraction from the public water supply source of the City of Kikinda. The hydrodynamic model includes the municipal groundwater source of Kikinda (Šumice and the Jezero Well), but also an extended area where there are groundwater sources that provide water supply to three factories: (MSK, TM and LŽT - Kikinda). Hydrodynamic modeling, based on the numerical method of finite differences will show the groundwater balance of the sources in the ...... of influence of Šumice (blue contour) is 700-750 m and that of the Jezero Well 350 m. 74 54 55 56 57 58 59 75 74 73 50 B-13B-14B-15B-16 B-17 B-1B-2 B-3 B-4 B-18 Jezero GW source „Šumice“ 76 77 78 Figure 12. Disribution of streamlines around production wells at the groundwater ...
... CA, 381p, 1992. 24. Rehm, B. W., Groenewold G. H. and Morin, K. A., Hydraulic Properties of Coal and Related Materials, Northern Great Plains, Ground Water, Vol. 18, No. 6, 551-561, 1980, http://dx.doi.org/10.1111/j.1745-6584.1980.tb03649.x 25. Thierrin, J., Davis G. B., and Baber C., A Ground-water ...
... Hydrogeological parameters from previous research Well Transmissibility coefficient [m2/s] Hydraulic conductivity [m/s] Year Šumice (B-2) (10-12) × 10-3 - 1979 TM (11-18) × 10-3 - 1979 MSK (3-7) × 10-3 - 1978 MSK (17-22) × 10-3 - 1981 MSK 20.5 × 10-3 8.5 × 10-3 1995 CONCEPTUAL ...Dušan Polomčić, Dragoljub Bajić, Jelena Zarić. "Determining the Groundwater Balance and Radius of Influence Using Hydrodynamic Modeling: the Case Study of the Groundwater Source “Šumice” (Kikinda, Serbia)" in Journal of Sustainable Development of Energy, Water and Environment Systems (2015). https://doi.org/10.13044/j.sdewes.2015.03.0017
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Synthesis and characterization of high-pressure and high-temperature sphene (CaTiSiO5)
Jelena Pantić, Vladimir Urbanovich, Vesna Poharc-Logar, Bojan Jokić, Marija Stojmenović, Aleksandar Kremenović, Branko Matović (2014)Sphene (CaTiSiO5), a calcium titanosilicate ceramic has been prepared from a powder mixture of CaCO3, TiO2 and SiO2 using vibro-milling for homogenization and activation of precursors. During the highpressure and high-temperature synthesis (HPS) process at 4 GPa and 1,200 °C, sphene undergoes into phase transition, from room-temperature phase P21/a to high-temperature phase A2/a. Evidence of that structural phase transition is given in this paper using infrared, Raman spectroscopy and X-ray powder diffraction. Rietveld refinement was employed to get the ...Jelena Pantić, Vladimir Urbanovich, Vesna Poharc-Logar, Bojan Jokić, Marija Stojmenović, Aleksandar Kremenović, Branko Matović. "Synthesis and characterization of high-pressure and high-temperature sphene (CaTiSiO5)" in Physics and Chemistry of Minerals, Springer Science and Business Media LLC (2014). https://doi.org/10.1007/s00269-014-0693-x
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Geotehnički aspekti projektovanja deponija komunalnog otpada
Rakić Dragoslav, Čaki Laslo, Basarić Irena. "Geotehnički aspekti projektovanja deponija komunalnog otpada" in Međunarodna konferencija Otpadne vode, komunalni čvrsti otpad i opasan otpad, [42], 02-05. april 2012. godine, Čačak = International Conference Waste Waters, Municipal Solid Wastes and Hazardous Wastes, [42st], 02th-05th April 2012, Čačak, Serbia, Čačak, Srbija:Udruženje za tehnologiju vode i sanitarno inženjerstvo (2012): B 222-B 226
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Osnovni pokazatelji fizičkog stanja komunalnog otpada
Rakić Dragoslav, Čaki Laslo, Basarić Irena. "Osnovni pokazatelji fizičkog stanja komunalnog otpada" in Međunarodna konferencija Otpadne vode, komunalni čvrsti otpad i opasan otpad, [43], 10-12. april 2013. godine, Subotica = International Conference Waste Waters, Municipal Solid Wastes and Hazardous Wastes, [43st], 10th-12th April 2013, Subotica, Serb, Beograd:Udruženje za tehnologiju vode i sanitarno inženjerstvo (2013): B 110-B 114
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Rešenje tehnološke linije za separaciju otpada na primeru grada Vlasotinca
Rakić Dragoslav, Milovanović Miroslav, Jakovljević Dušan. "Rešenje tehnološke linije za separaciju otpada na primeru grada Vlasotinca" in Međunarodna konferencija Otpadne vode, komunalni čvrsti otpad i opasan otpad, [41], 05-08. april 2011. godine, Niška Banja = International Conference Waste Waters, Municipal Solid Wastes and Hazardous Wastes, [41st], 05th-08th April 2011, Niška Banja, Beograd:Udruženje za tehnologiju vode i sanitarno inženjerstvo (2011): B 294-B 298
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Novi model za postizanje optimalne proizvodnje na naftnom polju Amal
Elnori Elmabrouk Ali Elhaddad (2015-04-16)Doktorskom disertacijom analizirani su i proučavani problemi proizvodnje nafte iprimenjene metode za njihovo rešavanje na naftnom polju Amal. Ukratko jeprikazana proizvodnje nafte u Libiji, njene karakteristike i rezerve, da bi se videoznačaj ovog naftnog polja.Utvrđeno je da su na naftnom polju Amal ključni problemi koji prate procesproizvodnje taloženje parafina, pojava slojnog peska, neefikasan rad gasliftsistema, neefikasna desalinizacija nafte i ekološki problemi. Proizvodniproblemi, pojedinačno i više njih zajedno, na nekim bušotinama uzrokovali susmanjenje proizvodnje nafte od 40 do 75%. Zbog ...... kojih se više ne proizvodi nafta, a imaju kontakt sa vodenim basenom. U početnoj fazi planira se utiskivanje slojne vode u bušotine B-71, B- 41, N-22, B-39, B-10, B-70 i B-68. Sa povećanjem sadržaja slojne vode u nafti biće potrebno definisati i druge bušotine za utiskivanje slojne vode. Povezivanje ...
... raspodele ograničene količine gasa za utiskivanje po bušotinama P o s tu p a k s e p o n a v lja u z a v is n o s ti o d b ro ja b uš ot in a Određivanje IPR Krive Određivanje VLP Krivih Određivanje Krive karakteristike rada gaslifta Raspodela ograničene količine ...
... Funkcija predstavljena prethodnom P ro iz vo d n ja f lu id a ( m ³/ d ) Utisnuti gas (m³/d) C B A a b 61 jednačinom određuje se za svaku pojedinačnu bušotinu. (Santos i dr, 2001; Denney, 2002; Rashid, 2008; Rashid, 2010) Sledeć ...Elnori Elmabrouk Ali Elhaddad. "Novi model za postizanje optimalne proizvodnje na naftnom polju Amal" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2015-04-16)
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Novi model za postizanje optimalne proizvodnje na naftnom polju Amal
Elnori Elmabrouk Ali Elhaddad (2015-04-16)Doktorskom disertacijom analizirani su i proučavani problemi proizvodnje nafte iprimenjene metode za njihovo rešavanje na naftnom polju Amal. Ukratko jeprikazana proizvodnje nafte u Libiji, njene karakteristike i rezerve, da bi se videoznačaj ovog naftnog polja.Utvrđeno je da su na naftnom polju Amal ključni problemi koji prate procesproizvodnje taloženje parafina, pojava slojnog peska, neefikasan rad gasliftsistema, neefikasna desalinizacija nafte i ekološki problemi. Proizvodniproblemi, pojedinačno i više njih zajedno, na nekim bušotinama uzrokovali susmanjenje proizvodnje nafte od 40 do 75%. Zbog ...... kojih se više ne proizvodi nafta, a imaju kontakt sa vodenim basenom. U početnoj fazi planira se utiskivanje slojne vode u bušotine B-71, B- 41, N-22, B-39, B-10, B-70 i B-68. Sa povećanjem sadržaja slojne vode u nafti biće potrebno definisati i druge bušotine za utiskivanje slojne vode. Povezivanje ...
... raspodele ograničene količine gasa za utiskivanje po bušotinama P o s tu p a k s e p o n a v lja u z a v is n o s ti o d b ro ja b uš ot in a Određivanje IPR Krive Određivanje VLP Krivih Određivanje Krive karakteristike rada gaslifta Raspodela ograničene količine ...
... Funkcija predstavljena prethodnom P ro iz vo d n ja f lu id a ( m ³/ d ) Utisnuti gas (m³/d) C B A a b 61 jednačinom određuje se za svaku pojedinačnu bušotinu. (Santos i dr, 2001; Denney, 2002; Rashid, 2008; Rashid, 2010) Sledeć ...Elnori Elmabrouk Ali Elhaddad. "Novi model za postizanje optimalne proizvodnje na naftnom polju Amal" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2015-04-16)
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Određivanje parametara stišljivosti starog komunalnog otpada
Rakić Dragoslav, Čaki Laslo, Ćorić Slobodan, Cvetković Vladica. "Određivanje parametara stišljivosti starog komunalnog otpada" in Međunarodna konferencija Otpadne vode, komunalni čvrsti otpad i opasan otpad, [40], 29. mart - 01. april 2010. godine, Subotica = International Conference Waste Waters, Municipal Solid Wastes and Hazardous Wastes, [40th], 29th March - 01st April 2010, Beograd:Udruženje za tehnologiju vode i sanitarno inženjerstvo (2010): B 203-B 207
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Analiza sleganja objekta na komunalnoj deponiji
Rakić Dragoslav, Čaki Laslo, Tomašević Biljana, Novaković Dejan. "Analiza sleganja objekta na komunalnoj deponiji" in Međunarodna konferencija Otpadne vode, komunalni čvrsti otpad i opasan otpad, [41], 05-08. april 2011. godine, Niška Banja = International Conference Waste Waters, Municipal Solid Wastes and Hazardous Wastes, [41st], 05th-08th April 2011, Niška Banja, Niška Banja, Srbija:Udruženje za tehnologiju vode i sanitarno inženjerstvo, (2011): B 310-B 314
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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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Demise of the Wetterstein Carbonate Platform and onset of the Dachstein Carbonate Platform recorded in deep-water successions of the East Bosnian-Durmitor megaunit (Pliješevina, northern Montenegro, Dinarides)
Milica Mrdak, Eva Wagerer, Milan Sudar, Nevenka Djerić, Martin Đaković, Hans-Jürgen Gawlick. "Demise of the Wetterstein Carbonate Platform and onset of the Dachstein Carbonate Platform recorded in deep-water successions of the East Bosnian-Durmitor megaunit (Pliješevina, northern Montenegro, Dinarides)" in Geologica Carpathica, Central Library of the Slovak Academy of Sciences (2024). https://doi.org/10.31577/GeolCarp.2023.26
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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 ...... 600 oC i malim vrednostima pritiska, b) na temperaturama iznad 600 oC sa malim do umerenim pritiskom. Uzimajući kao dominantni genetski oblik (b), Buddington & Lindsley (1964) definišu tri tipa prorastanja ilmenita u titanomagnetitu: a. trelis tip, b. sendvič tip i c. kompozitni tip. ...
... (f) jasno se uočava izdvajanje rutilskih (Rt) lamela, dok se ove lamele na dateljima (b) i (d) teže zapažaju. HI HI HI Mgt Mgt Rt f a c e b d 49 Slika 26. a,b) Alteracija hemoilmenita (tj. ferijskog ilmenita - FI) u rutil (Rt) i „leukoksen“ (L) duž ...
... predstavljen i formulom FeOxFe2O3. Gvožđe se nalazi u dva valentna stanja i to Fe2+ i Fe3+ (obično se sa A označava Fe2+ a sa B Fe3+) i formira inverznu spinelsku strukturu Btet(B/A)oktaO4 sa blago distorziranim teseralnim pakovanjem anjona (Bosi et al, 2009) (slika 2). Značajno za ovaj tip strukture ...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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A hydrogeological model of the open-cast mine Tamnava - West Field (Kolubara Coal Basin, Serbia)
... aquifers from different angles. 50 Ratković J., Polomčić D., Bajić D., Hajdin B. Figure 3 3D representation of the triple aquifer system (1 - upper, 2 - intermediate, and 3 - lower): a) south-north cross-section, and b) view from the south. 5. CONCLUSION The geologic and hydrogeologic conditions ...
... Abstract: The Kolubara Coal Basin is the largest coal-producing area in Serbia. It is administratively comprised of several open-cast mines: Field A, Field B, Field C, Field D, Field E, Field F, Field G, Veliki Crljeni, Šopić-Lazarevac, Tamnava - West Field, Tamnava – East Field, Radljevo, Zvizdar, Ruklade ...
... ugljonosni basen najveći je basen uglja u Republici Srbiji. U basenu je administrativnom podelom okontureno više površinskih kopova: „Polje A“, „Polje B“, „Polje C“, „Polje D“, „Polje E“, „Polje F“, „Polje G“, „Veliki Crljeni“, „Šopić-Lazarevac“, „Tamnava - Zapadno polje“, „Tamnava Istočno polje“, „Radljevo“ ...Jelena Ratković, Dušan Polomčić, Dragoljub Bajić, Bojan Hajdin. "A hydrogeological model of the open-cast mine Tamnava - West Field (Kolubara Coal Basin, Serbia)" in Underground Mining Engineering no. 29, Belgrade : University of Belgrade - Faculty of mining and geology (2016): 43-54
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Cutting Resistance Laboratory Testing Methodology for Underwater Coal Mining
... for wedging the rock specimens has a wedge angle of 35◦ with a blunter tip of width b = 5 mm and length of l = 65 mm (Figures 7 and 8) [14,17]. σ σ σ (a) (b) Figure 7. Wedge test method: (a) the wedge and (b) wedge position while testing cutting force. This test method suggests that the rock ...
... Jovanovic, B.; Stjepanovic, P. Maintaining the functionality of the coal settling basin at the underwater pit Kovin. Min. Met. Eng. Bor 2016, 1, 95–102. [CrossRef] 21. Zivotic, D.; Cvetković, O.; Vulić, P.; Gržetić, I.; Simić, V.; Ilijevic, K.; Dojčinović, B.; Erić, S.; Radić, B.; Stojadinović ...
... (N), L—length of the specimen (cm’), and A—specimens’ cross-section area (cm2). ′ (a) (b) γ γ γ σ σ σ σ σ Figure 8. Wedge testing method (Orenstein and Koppel): (a) cylindrical (core) sample and (b) cubical sample. 6. Modified Methodology of Cutting Resistance Testing for Underwater Coal ...Vladimir Čebašek, Veljko Rupar, Stevan Đenadić, Filip Miletić. "Cutting Resistance Laboratory Testing Methodology for Underwater Coal Mining" in Minerals, MDPI AG (2021). https://doi.org/10.3390/min11060564
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Machine learning based landslide assessment of the Belgrade metropolitan area: Pixel resolution effects and a cross-scaling concept
Improvements of Machine Learning-based landslide prediction models can be made by optimizing scale, customizing training samples to provide sets with the best examples, feature selection, etc. Herein, a novel approach, named Cross-Scaling, is proposed that includes the mixing of training and testing set resolutions. Hypothetically, training on a coarser resolution dataset and testing the model on a finer resolution should help the algorithm to better generalize ambiguous examples of landslide classes and yield fewer over/underestimations in the model. This ...Uroš Đurić, Miloš Marjanović, Zoran Radić, Biljana Abolmasov. " Machine learning based landslide assessment of the Belgrade metropolitan area: Pixel resolution effects and a cross-scaling concept" in Engineering Geology , Elsevier (2019). https://doi.org/10.1016/j.enggeo.2019.05.007
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Analiza uticajnih faktora na čvrstoću smicanja komunalnog otpada
Rakić Dragoslav, Čaki Laslo, Ćorić Slobodan, Cvetković Vladica. "Analiza uticajnih faktora na čvrstoću smicanja komunalnog otpada" in Međunarodna konferencija Otpadne vode, komunalni čvrsti otpad i opasan otpad, [42], 02-05. april 2012. godine, Čačak = International Conference Waste Waters, Municipal Solid Wastes and Hazardous Wastes, [42st], 02th-05th April 2012, Čačak, Serbia : I, Čačak, Srbija:Udruženje za tehnologiju vode i sanitarno inženjerstvo (2012): B 227-B 231
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Groundwater resources for drinking water supply in Serbia´s Southeast Pannonian basin
Dušan Polomčić, Bojan Hajdin, Marina Ćuk, Petar Papić, Zoran Stevanović. "Groundwater resources for drinking water supply in Serbia´s Southeast Pannonian basin" in Carpathian Journal of Earth and Environmental Sciences (2014)