Претрага
1074 items
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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 ...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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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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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 ...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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Application of ERT in the study of debris-flow source area: Case study Selanac debris flow
... Abolmasov, B. and Marjanović, M. [2017] Preliminary results of the Selanac debris flow modelling in RAMMS - a case study., Proceeding of the 3rd Regional Symposium on Landslides in the Adriatic-Balkan Region, Ljubljana 2017, 1, pp. 95 - 100, 978-961- 6498-58-6. Krušić J., Abolmasov, B., Marjanović ...
... field work. Debris flow stretched 1.5 km with a width of more than 350 m (Figure 1/a), with the main scarp height at 30 m as its deepest part (Figure 1/b). The the main scarp zone is mainly is composed of weathered material that consists of limestone, sandstone and diabase, with fragments of heterogeneous ...
... SOCIETY – Bucharest 2021 Figure 1 a)Geographical position of investigated area and Pleiades image of Selanac debris flow after the event; b) Main scarp photo(November 2015); Position of ERT AA’ on Pleiades image The ERT method The main information obtained by applying the 2D ERT ...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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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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Middle Triassic stepwise deepening and stratigraphic condensation associated with Illyrian volcanism in the Durmitor Mountain, Montenegro
Milica Mrdak, Martin Đaković, Hans-Jürgen Gawlick, Nevenka Đerić, Ioan I. Bucur, Milan Sudar, Mileva Milić, Damjan Čađenović (2024)... conodonts. CAI-values were visually determined using a standard set and following the tic sedimentary rocks ofthe Džegeruša Formation 0 1.5 km B\\ · i B (Fig. 2). —— rvenica Riječka strana i i. |j „ Lugovi Krnjevina__Prisoje Remarks to the subdivision ofthe Carnian Donja Orlja _ Orlia korita ...
... j š | Hi ž .. FI |l 1000 1 31 |H Hi s 38 Š Š - ž B Š 0 10 20 30 40 50 60 *2meta sample MM 385 3000 H a| 2000- Š š || Š šs 8 iH Š |l 58 F i 3 |-- L 1000- š F+ i a Ll YO I j | až Š | Fa # Š 8 5ž : ž | ŠŠS M a || . Š B BBI I 56 š KE NEIEE W - 10 20 30 - omaa 40 50 60 Lunz ...
... , Sudar M., Karamata S., Haas J., Pćro Cs., Gradinaru E., Gawlick H.-J., Gaetani M., Mello J., Polak M., Aljinović D., Ogorelec B., Kolar-Jurkovšek T., Jurkovšek B. & Buser S. 2010: Triassic environments in the Circum-Pannonian Region related to the initial Neotethyan rifting stage. In: Vozar ...Milica Mrdak, Martin Đaković, Hans-Jürgen Gawlick, Nevenka Đerić, Ioan I. Bucur, Milan Sudar, Mileva Milić, Damjan Čađenović. "Middle Triassic stepwise deepening and stratigraphic condensation associated with Illyrian volcanism in the Durmitor Mountain, Montenegro" in Facies, Springer Science and Business Media LLC (2024). https://doi.org/10.1007/s10347-024-00683-0
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A new anion-deficient fluorite-related superstructure of Bi28V8O62
Đorđević Tamara, Karanović Ljiljana (2014)Đorđević Tamara, Karanović Ljiljana. "A new anion-deficient fluorite-related superstructure of Bi28V8O62" in Journal of Solid State Chemistry 220, 525 B St, Ste 1900; San Diego; CA 92101-4495:Elsevier (2014): 259-269. https://doi.org/org/10.1016/j.jssc.2014.09.010
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A hydrogeological model of the open-cast mine Tamnava - West Field (Kolubara Coal Basin, Serbia)
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
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 ...... hazard assessment based on support vector machine. Wuhan Univ. J. Nat. Sci. 11, 897–900. https://doi.org/10.1007/ BF02830184. Lokin, P., Pavlović, R., Trivić, B., Lazić, M., Batalović, K., Đurić, U., 2012. Belgrade landslide cadastre. In: Zbornik Radova - XIV Simpozijum Iz Inženjerske Geologije i Geotehnike ...
... Olomouc. Marjanović, M., Kovačević, M., Bajat, B., Voženílek, V., 2011. Landslide susceptibility assessment using SVM machine learning algorithm. Eng. Geol. 123, 225–234. https:// doi.org/10.1016/j.enggeo.2011.09.006. Marjanović, M., Bajat, B., Abolmasov, B., Kovačević, M., 2018. Machine learning and landslide ...
... Biljana Abolmasovb a University of Belgrade, Faculty of Civil Engineering, Bulevar Kralja Aleksandra 73/1, Serbia b University of Belgrade, Faculty of Mining and Geology, Đušina 7, Serbia A B S T R A C T Improvements of Machine Learning-based landslide prediction models can be made by optimizing scale ...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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Postorogenic interplay of tectonic and magmatic processes within the Internal Dinarides
Mladenović Ana, Cvetković Vladica, Trivić Branislav. "Postorogenic interplay of tectonic and magmatic processes within the Internal Dinarides" in Geologica Macedonica, sp. iss. Third Congress of Geologists of Republic of Macedonia 2 no. 4, Struga :Macedonian Geological Society Macedonian Geological Society (2016): 317-318
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Metode geotehničkog monitoringa deponija komunalnog otpada
Rakić Dragoslav, Basarić Irena (2014)Rakić Dragoslav, Basarić Irena. "Metode geotehničkog monitoringa deponija komunalnog otpada" in Međunarodna konferencija Otpadne vode, komunalni čvrsti otpad i opasan otpad, [44], 01-03. april 2014. godine, Zlatibor = International Conference Waste Waters, Municipal Solid Wastes and Hazardous Wastes, [44th], 01st-03rd April 2014, Subotica, Ser, Beograd:Udruženje za tehnologiju vode i sanitarno inženjerstvo (2014): B 76-B 80
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Површинско распадање керсантита из Тешића мајдана у корелацији са начином обраде на примеру малог степеништа (Београдска тврђава)
Невенка Новаковић (2024)Архитектуру Београда на прелазу 19. у 20. век обележила је употреба керсантита из каменолома Тешића мајдана. Kao камен високих декоративних својстава, керсантит је коришћен за јавне споменике, делове или потпуну изградњу објеката (Народна скупштина Србије, Мало степениште, Народни музеј и др.). Како очување споменика културе изискује познавање својстава уграђеног камена, истраживања су обухватила детаљно проучавање петролошких, хемијских и физичких карактеристика керсантита из Тешића мајданa и узорака камена из споменика Мало степениште (студија случаја). Након детаљног мапирања стања керсантита, лабораторијских ...керсантит, Мало степениште, споменик културе, архитектонски камен, физичко-хемијско распадање, мапирање, форме распадања, површинска обрадаНевенка Новаковић. Површинско распадање керсантита из Тешића мајдана у корелацији са начином обраде на примеру малог степеништа (Београдска тврђава), Београд : [Н. Новаковић], 2024
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Groundwater resources for drinking water supply in Serbia´s Southeast Pannonian basin
... -4547 -556 127 -660 1886 1115 B 25344 3448 -20463 -4547 -810 35 -822 2185 816 C 22528 2981 -18310 -4697 -531 139 -620 1670 1331 D 22528 3582 -18518 -4365 -625 46 -671 1977 1024 (2011 – reference year, A - Current exploitation, Infiltration of precipitation 80%, B - Current exploitation, Infiltration ...
... Ćuk, M., Todorović, M., Stojković, J., Hajdin, B., Atanacković, N. & Polomčić, D., 2012. Arsenic in tap waters of the south Pannonian basin (Serbia) and arsenic risk assessment, Pol. J. Environ. Stud. Vol. 21, No 6, 1783-1790. Petrusevski, B., Sharma, S.K., Schippers, J.C. & Shordt, K., 2007 ...
... in natural waters. Applied Geochemistry 17: 517-568. Stevanović, Z., Kozák, P., Lazić, M., Szanyi, J., Polomčić, D., Kovács, B., Török, J., Milanović, S. & Hajdin, B., 2008. Towards sustainable management of transboundary Hungarian – Serbian aquifer. IV International Symposium on Transboundary ...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)
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Middle to Late Jurassic pelagites and gravity mass flow deposits of a displaced Neotethyan margin: Microfacies and biostratigraphical studies in Northeast Hungary
János Haas, László Fodor, Nevenka Đeric, Ottilia Szives, Péter Ozsvárt, Melinda Fialowski, Szilvia Kövér (2024)János Haas, László Fodor, Nevenka Đeric, Ottilia Szives, Péter Ozsvárt, Melinda Fialowski, Szilvia Kövér. "Middle to Late Jurassic pelagites and gravity mass flow deposits of a displaced Neotethyan margin: Microfacies and biostratigraphical studies in Northeast Hungary" in Geološki anali Balkanskoga poluostrva, Beograd : Univerzitet u Beogradu - Rudarsko-geološki fakultet (2024). https://doi.org/10.2298/GABP241010014H
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Review: Methodological approaches and research techniques for addressing construction and remediation problems in karst reservoirs
Saša Milanović, Ljiljana Vasić (2021)Saša Milanović, Ljiljana Vasić. "Review: Methodological approaches and research techniques for addressing construction and remediation problems in karst reservoirs" in Hydrogeology Journal, Springer Science and Business Media LLC (2021). https://doi.org/10.1007/s10040-020-02280-1
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Hidrogeoekološki aspekti aksploatacije uglja u Pelagonijskom basenu (Makedonija)
Kostadin J. Jovanov (2016-06-24)Leţišta uglja „Suvodol“, „Brod-Gneotino“ su u eksploataciji, a leţište uglja „Ţivojno“je u fazi pripremi. Nalaze se u krajnjem jugoistočnom i juţnom delu Pelagonijskekotline. Sva tri leţišta stvorena su u neogenim sedimentima u jezerskim uslovimasedimentacije u zoni kontakta sa prekambrijumskim kristalastim stenama. Kod sva trileţišta ugalja se javljaju više slojeva različite debljine, u okviru kojih se nalaze klastičnisedimenti (gline, peskovi i dr.). U podini ugljenog basena nalaze se kristalaste steneprekambrijumske starosti.Teren u okolini leţišta uglja karakteriše se umereno kontinentalnom klimom, ...ugalj, podzemne vode, površinske vode, neogeni kompleks, izdani,transmisibilnost, nivo podzemne vode, sniţenje nivoaKostadin J. Jovanov. "Hidrogeoekološki aspekti aksploatacije uglja u Pelagonijskom basenu (Makedonija)" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-06-24)
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Upper Miocene depositional environments of the Kikinda-Mokrin High (Serbia)
Saša Ivanišević, Dejan Radivojević (2018)Exploration for oil and gas in mature areas, such as the Pannonian Basin, can benefit from reexamination of old data using more advanced modern workflows that focus on the temporal and spatial aspects of sediment deposition. Specifically, we apply a new environment of deposition model that interprets the Upper Miocene- Pliocene sediments as being deposited in a rapidly filling basin characterized by quick shelf edge progradation from the northwest toward the southeast. Reconstruction of this shelf edge trajectory reveals ...... The black rectangle marks the well area. (b) The Pannonian Basin system with the study area (marked with polygon). SB66 Interpretation / February 2018 D o w n lo ad ed 0 2 /0 5 /1 8 t o 2 1 6 .6 3 .2 4 6 .1 6 6 . R ed is tr ib u ti o n s u b je ct t o S E G l ic en se o r ...
... 357–390. Saftić, B., J. Velić, O. Sztanó, Gy. Juhász, and Z. Ivkovic, 2003, Tertiary subsurface facies, source rocks and Hy- drocarbon reservoirs in the SW part of the Pannonian Basin (Northern Croatia and South-Western Hungary): Geologica Croatica, 56, 101–122. Schmid, S. M., D. Bernoulli, B. Fügenschuh ...
... SB65Interpretation / February 2018 SB65 D o w n lo ad ed 0 2 /0 5 /1 8 t o 2 1 6 .6 3 .2 4 6 .1 6 6 . R ed is tr ib u ti o n s u b je ct t o S E G l ic en se o r co p y ri g h t; s ee T er m s o f U se a t h tt p :/ /l ib ra ry .s eg .o rg / High ...Saša Ivanišević, Dejan Radivojević. "Upper Miocene depositional environments of the Kikinda-Mokrin High (Serbia)" in Interpretation, AAPG SEG (2018). https://doi.org/10.1190/INT-2017-0084.1
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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