Претрага
967 items
-
Definisanje strukturnih odnosa primenom postupka horizontalni gradijent
Različiti postupci matematičkih transformacija se mogu primeniti na gravimetrijskim i magne tometrijskim podacima, kako bi se na istražnom terenu definisali strukturno-tektonski odnosi. U radu su prikazani rezultati dobijeni korišćenjem postupka horizontalni gradijent i ukupni horizontalni gradijent na gravimetrisjkim podacima. Navedeni postupci su pomogli da se detektuju kontakti sa velikim padnim uglom (vertikalni ili subvertikalni kontakti), koji se mogu interpretirati kao rasedi. Za test područije uzet je istražni prostor koji se nalazi na jugoistoku Srbije u okolini Vranjskog basena. Položaji ...... приступу. - Претрага репозиторијума доступна је на www.dr.rgf.bg.ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac ...Snežana Ignjatović, Ivana Vasiljević, Natalija Jovanović. "Definisanje strukturnih odnosa primenom postupka horizontalni gradijent" in Tehnika, Beograd : Savez inženjera i tehničara Srbije (2019). https://doi.org/10.5937/tehnika1905664I
-
Збирка задатака из Механике 1 и Отпорности материјала
Aна Петровић, Инес Гроздановић (2023)... приступу. - Претрага репозиторијума доступна је на www.dr.rgf.bg.ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac ...Aна Петровић, Инес Гроздановић. Збирка задатака из Механике 1 и Отпорности материјала, Београд : Универзитет у Београду, Рударско-геолошки факултет, 2023
-
Smanjenje sleganja plitkih temelja primenom mikrošipova
Slobodan Ćorić, Dragoslav Rakić (2021)Mikrošipovi su šipovi malog prečnika koji se grade tako što se u tlu specijalni postupkom formira bušotina koja se zatim armira i injektira. Njihov prečnik je najčešće 150 – 300 mm, a dužina može da bude i više desetina metara. Mikrošipovi mogu da se grade u svim vrstama tla i mogu da budu vertikalni i kosi. Oni se, stoga, koriste kao zamena za konvencionalne šipove i ankere. Primena mikrošipova u fundiranju predstavlja jedan savremeni način izgradnje i sanacije temelja/objekata. ...Slobodan Ćorić, Dragoslav Rakić. "Smanjenje sleganja plitkih temelja primenom mikrošipova" in Zbornik radova međunarodno naučno-stručnog savetovanja Zemljotresno inženjerstvo i geotehnički aspekti građevinarstva, Vrnjačka banja, 3-5. novembar 2021., Beograd : Savez građevinskih inženjera Srbije (2021)
-
Selection of Artificial Lift Methods: A Brief Review and New Model Based on Fuzzy Logic
Miroslav Crnogorac, Miloš Tanasijević, Dušan Danilović, Vesna Karović Maričić, Branko Leković (2020)Artificial lift methods have applications in oil wells where oil production is no longer possible due to natural reservoir energy, so this necessary energy is added by introducing lift methods. In order to achieve optimum production, the selection of an artificial lift method is very important. This paper uses fuzzy logic as a mathematical and conceptual model for selection of the optimal artificial lift method. The outcome or IF-THEN rules, as the central part of the model, is based ...... application. The priority was his technical parameters, while the economic impact was less important [6]. In 1988, Clegg used an analysis of all boundary conditions for the application of exploitation methods, but gave priority to economic parameters [8]. In 1988, Valentin and Hoffman created the OPUS ...
... parameters of methods and characteristics of the well and reservoir, also takes into account economic aspects (costs) [7]. In 1994, Espin and a group of authors observed technical characteristics and then economic ones [9]. In 1995, Heinze and a group of authors use the decision tree to apply group criteria ...
... production. Choosing the optimal method is done by taking into account the parameters of reservoir and fluids, well type, environmental conditions, and economic factors (capital and operational costs). Final decisions on artificial lift methods are often made based on the following subject criteria: • These ...Miroslav Crnogorac, Miloš Tanasijević, Dušan Danilović, Vesna Karović Maričić, Branko Leković. "Selection of Artificial Lift Methods: A Brief Review and New Model Based on Fuzzy Logic" in Energies, MDPI AG (2020)
-
Application of a Method for Intelligent Multi-Criteria Analysis of the Environmental Impact of Tailing Ponds in Northern Kosovo and Metohija
Gordana Milentijević, Blagoje Nedeljković, Milena Lekić, Zoran Nikić, Ivica Ristović, Jelena Đokić (2016)... process. Keywords: tailing pond; environment; multi-criteria analysis; ecology; Trepča 1. Introduction Mining presents a significant element of economic development in every state. It is also known that the biggest environmental pollutant is the mining sector [1]. Mining is followed by a mass production ...
... приступу. - Претрага репозиторијума доступна је на www.dr.rgf.bg.ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac ...
... Mitrovica, Serbia; gordanamilentijevic@yahoo.com (G.M.); blagojenedeljkovic@yahoo.com (B.N.); jeladjokic7@gmail.com (J.D.) 2 Faculty of Mining and Geology, University of Belgrade, 11000 Belgrade, Serbia; ivica.ristovic@rgf.bg.ac.rs 3 Faculty of Forestry, University of Belgrade, 11030 Belgrade, Serbia; ...Gordana Milentijević, Blagoje Nedeljković, Milena Lekić, Zoran Nikić, Ivica Ristović, Jelena Đokić. "Application of a Method for Intelligent Multi-Criteria Analysis of the Environmental Impact of Tailing Ponds in Northern Kosovo and Metohija" in Energies, MDPI AG (2016). https://doi.org/10.3390/en9110935
-
Understanding partitioning of deformation in highly arcuate orogenic systems: Inferences from the evolution of the Serbian Carpathians
Nemanja Krstekanić, Liviu Matenco, Marinko Toljić, Oleg Mandić, Uroš Stojadinović, Ernst Willingshofer (2020)... of the Alpine Tethys Ocean and a northern branch of the Neotethys Ocean (e.g., Schmid et al., 2008, 2020). 2.1. The Cretaceous–Eocene tectono-stratigraphy and associated magmatism The Ceahlău–Severin branch of the Alpine Tethys Ocean, whose remnants outcrop east and north of the studied area (Figs ...
... ressive upper Carboniferous–Permian sequence containing conglomerates, sandstones and shales with coal seams that are replaced upwards in the stratigraphy by red alluvial sandstones (Fig. 3, Djordjević-Milutinović, 2010; Kalenić et al., 1980; Petković, 1975). These sediments are overlain by a ...
... chronostratigraphic constraints on the Middle to late Miocene evolution of the Transylvanian Basin (Romania): implications for Central Paratethys stratigraphy and emplacement of the Tisza–Dacia plate. Glob. Planet. Chang. 103, 82–98. De Vicente, G., Regas, R., Muñoz-Martín, A., Van Wees, J.D., Casas-Sáinz ...Nemanja Krstekanić, Liviu Matenco, Marinko Toljić, Oleg Mandić, Uroš Stojadinović, Ernst Willingshofer. "Understanding partitioning of deformation in highly arcuate orogenic systems: Inferences from the evolution of the Serbian Carpathians" in Global and Planetary Change, Elsevier BV (2020). https://doi.org/10.1016/j.gloplacha.2020.103361
-
Анализа примене утискивања полимера за повећање искоришћења лежишта „Х“
Јана Ивановић (2024)Лежиште „Х“ се налази у Панонском басену и део је нафтно-гасног поља „ХХ“.С обзиром на висок удео воде у произведеном флуиду на лежишту је потребно применити неку методу којом би се смањила брзина напредовања фронта воде ка производним бушотинама, односно смањио удео воде у производњи. Овај рад има за циљ да детаљно испита могућност примене једне од допунских метода повећања искоришћења лежишта, методе утискивања полимера на изабраном лежишту „Х“. Први део рада приказује основне теоријске појмове на којима се ...... Flooding Technique”, Oil & Gas Research, 2017. [16] Kasimbazi Gloria, „Polymer Flooding”, master thiesis, Norwegian university of science and technology, Department of Petroleum Engineering and applied geophysics, 2014. [17] Ming Han, Hianmin Zhou, Fuseni B. Alhasan, Badr Zahrani, Abdulkareem ...
... Article in Asia-Pacific Journal of Chemical Engineering, 2013. [24] Sheng, J. James, Leonhardt, B., and Azri, N., „Status of Polymer-Flooding Technology“, 2015. [25] Thomas Antoine, „Essenfials of Polymer Flooding Techinque”, 2019. [26] TuamMumih JiMMurpuje, IlejoBuh BopmMBoje, „Mozyfhnocm nogehana ...
... Flooding”, International Journal of Energy and Power Engineering, 2016. [31] Xuening Li, Fusheng Zhang, Guoliang Liu, „Review on polymer flooding technology”, Research Institute of Petroleum Exploration, 2021. 54 O6pamau |[ M3JABA O AYTOPCTBY 3ABPIIIHOT PAJIA Me B npe3tHMe cTyleHTa ·Jđ\'bč MROPMV\ ...Јана Ивановић. Анализа примене утискивања полимера за повећање искоришћења лежишта „Х“, 2024
-
Hidrogeohemija prirodnih radioaktivnih elemenata u podzemnim vodama Srbije
Marina D. Ćuk (2018-02-23)Osnovni cilj doktorske disertacije predstavljao je definisanje prirodnih koncentracija (engl. background values) U, Th, i K u podzemnim vodama, i definisanje hidrogeohemijskih uslova koji utiču na distribuciju navedenih elemenata u podzemnim vodama...prirodni radioaktivni elementi, podzemna voda, geohemijske sredine, hidrogeohemijski uslovi, neparametarska statistička analiza, logistički model, hidrohemijsko modeliranje... 2015. Solution composition and particle size effects on the dissolution and solubility of a ThO2 microstructural analogue for UO2 matrix of nuclear fuel. Radiochimica Acta 103 (8): 565 – 576. 116. Nassef MH, Diab HM. 2015. Determination of Uranium and Thorium Concentration in Ground Water Samples ...
... Clin Chem. 50(7):1118 – 25. 121. Östhols E. 1994. Some Processes Affecting the Mobility of Thorium in Natural Ground Waters. Royal Institute of Technology, Stockholm. 172 122. Palarea-Albaladejo J, Martín-Fernández JA. 2013. Values below detection limit in compositional chemical data. Analytica ...
... приступу. - Претрага репозиторијума доступна је на www.dr.rgf.bg.ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac ...Marina D. Ćuk. "Hidrogeohemija prirodnih radioaktivnih elemenata u podzemnim vodama Srbije" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2018-02-23)
-
Influence of Initial Treatment on the Survival and Recurrence in Patients With Differentiated Thyroid Microcarcinoma
... приступу. - Претрага репозиторијума доступна је на www.dr.rgf.bg.ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac ...
... ‘‘Mihajlo Pupin’’, Zrenjanin; †Department of Nuclear Medicine, Oncology Institute of Vojvodina, Sremska Kamenica-retired; and ‡Faculty of Mining and Geology, University of Belgrade, Belgrade, Serbia. Conflicts of interest and sources of funding: none declared. Dr Stefanovic is deceased. Reprints: Department ...Jasna Mihailović, Ljubomir Stefanović, Ranka Stanković. "Influence of Initial Treatment on the Survival and Recurrence in Patients With Differentiated Thyroid Microcarcinoma" in Clinical Nuclear Medicine, Lippincott Williams & Wilkins (2013). https://doi.org/10.1097/RLU.0b013e3182872ed2
-
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
-
Optimising in electrical energy consumption in mining plants
Snežana Aleksandrović, Vesna Damnjanović, Ilija Jeftenić. "Optimising in electrical energy consumption in mining plants" in 17th International Symposium INFOTEH-JAHORINA 2018, Istočno Sarajevo : Elektrotehnički fakultet, Univerzitet u Istočnom Sarajevu (2018)
-
Допринос одређивању безопасног растојања при извођењу минирања
... приступу. - Претрага репозиторијума доступна је на www.dr.rgf.bg.ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac ...Slobodan Trajković, Sanja Bajić, Ivan Krsmanović. "Допринос одређивању безопасног растојања при извођењу минирања" in ДИТ : Друштво истраживање технологије (2023)
-
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
-
Multivarijabilni modeli upravljanja u rudarstvu
Marjan M. Hudej (2014-02-03)osetljivost i rizik. Više pobuda generiše ovakvu atribuciju. Prva je, multivarijabilnostambijentalnih uslova i funkcionalna i strukturna složenost rudarskih sistema (čovek -priroda (radna sredina) - mašina – okruženje); Druga se odnosi na ne postojanje opštenaučne saglasnosti oko ocene pogodnosti modela za podršku odlučivanju i upravljanje.Treća, ako bi saglasnost i postojala, nije sigurno da bi raspoloživi modeli, metode i taktike,dale ekvivalentne rezultate za iste rudničke uslove. Četvrta, sistemske nauke još uveknemaju opšte prihvaćen i u praksi primenljiv algoritam izbora najboljeg rešenja ...... Journal of Environmental Science and Technology, 5 (4), 2008, 535-546. 82. Soltanmohammadi, H., Osanloo, M., Bazzazi, A.A., Deriving preference order of post-mining land- uses through MLSA framework: application of an outranking technique. Environmental Geology, 58 (4), 2009, 877-888. 83. Solymosy ...
... analiza izvedena TOPSIS metodom, preporučila je najbolju odluku, a to je minskog polja sa 10 bušotina prečnika 64(mm). Musingwini C., TECHNO-ECONOMIC OPTIMIZATION OF LEVEL AND RAISE SPACING IN BUSHVELD COMPLEX PLA-TINUM REEF CONVENTIONAL BREAST MINING / TEHNO-EKONOMSKA OPTIMIZACIJA RASTOJANJA ...
... method for selecting the most appropriate blast design, Arabian journal of geosciences, Vol. 5, No.1, 2012, 95-101. 57. Musingwini C., Techno-economic optimization of level and raise spacing in Bushveld complex platinum reef conventional breast mining, The Journal of The Southern African Institute ...Marjan M. Hudej. "Multivarijabilni modeli upravljanja u rudarstvu" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2014-02-03)
-
Multivarijabilni modeli upravljanja u rudarstvu
Marjan M. Hudej (2014-02-03)osetljivost i rizik. Više pobuda generiše ovakvu atribuciju. Prva je, multivarijabilnostambijentalnih uslova i funkcionalna i strukturna složenost rudarskih sistema (čovek -priroda (radna sredina) - mašina – okruženje); Druga se odnosi na ne postojanje opštenaučne saglasnosti oko ocene pogodnosti modela za podršku odlučivanju i upravljanje.Treća, ako bi saglasnost i postojala, nije sigurno da bi raspoloživi modeli, metode i taktike,dale ekvivalentne rezultate za iste rudničke uslove. Četvrta, sistemske nauke još uveknemaju opšte prihvaćen i u praksi primenljiv algoritam izbora najboljeg rešenja ...... Journal of Environmental Science and Technology, 5 (4), 2008, 535-546. 82. Soltanmohammadi, H., Osanloo, M., Bazzazi, A.A., Deriving preference order of post-mining land- uses through MLSA framework: application of an outranking technique. Environmental Geology, 58 (4), 2009, 877-888. 83. Solymosy ...
... analiza izvedena TOPSIS metodom, preporučila je najbolju odluku, a to je minskog polja sa 10 bušotina prečnika 64(mm). Musingwini C., TECHNO-ECONOMIC OPTIMIZATION OF LEVEL AND RAISE SPACING IN BUSHVELD COMPLEX PLA-TINUM REEF CONVENTIONAL BREAST MINING / TEHNO-EKONOMSKA OPTIMIZACIJA RASTOJANJA ...
... method for selecting the most appropriate blast design, Arabian journal of geosciences, Vol. 5, No.1, 2012, 95-101. 57. Musingwini C., Techno-economic optimization of level and raise spacing in Bushveld complex platinum reef conventional breast mining, The Journal of The Southern African Institute ...Marjan M. Hudej. "Multivarijabilni modeli upravljanja u rudarstvu" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2014-02-03)
-
Analiza primenjenih metoda za transport parafinske nafte
Dunja Milojević (2024)Sadržaj parafina u nafti ima dominantan uticaj na svojstva parafinskih nafti. Taloženje parafina, odnosno taloženje čvrstih čestica parafinskog voska, predstavlja ozbiljan globalni problem tokom proizvodnje i transporta sirove nafte. Samo taloženje voska zavisi od termodinamičkih faktora, poput temperature, pritiska i sastava nafte. Transport nafte cevovodima je uobičajeni proces transporta u naftnoj industriji. Kada prilikom cevovodnog transporta parafinske sirove nafte, dođe do prekida protoka i hlađenja nafte ispod temperature stinjavanja, parafini će kristalisati, pri čemu će doći do, geliranja celokupne transportovane ...... parafina u bušotini, zbog uspešnog uklanjanja nataloženog parafina i racionalne potrošnje energije. 40 8. LITERATURA l. Abdel-Aal, H. (2021). Economic Analysis of Oil and Gas Engineering Operations. New York: CRC Press. 2. Alnaimat, F., Ziauddin, M., & Mathew, B. (2019, November 27). Wax Deposition ...
... Klektrotehnika, 60, str. 606-610. 9. Doeble, K. (2018). Wax Deposition as a Function of Flow Regimes. Norway: Norwegian University of Science and Technology. 10.Elmabrouk Ali Elhaddad, E. (2014). NOV!I MODEL ZA POSTIZANJE OPTIMALNE PROIZVODNJE NA NAFTNOM POLJU AMAL. Beograd: Univerzitet u Beogradu ...
... 10-14. 18.Stubsjden, M. (2013). Analytical and Numerical Modeling of Paraffin Wax in Pipelines. Norway: Norwegian University of Science and Technology. 19. Tolmač, J. (2020). Opfimizacija termičkih i hidrauličkih parametara transporta sirove nafte cevima. Zrenjanin: Univerzitet u Novom Sadu ...Dunja Milojević. Analiza primenjenih metoda za transport parafinske nafte, 2024
-
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
-
Stratigraphy and Microfauna (Radiolarians and Foraminifera) of the Upper Cretaceous (Upper Santonian–Lower Campanian) Carbonate Deposits in the Area of Struganik Village, Western Serbia)
Santonian, Campanian, radiolarians, planktonic foraminifera, biostratigraphy, limestones, Struganik, SerbiaLiubov Bragina, Nikita Bragin, Luidmila Kopaevich, Nevenka Đerić, Nataša Gerzina Spajić. "Stratigraphy and Microfauna (Radiolarians and Foraminifera) of the Upper Cretaceous (Upper Santonian–Lower Campanian) Carbonate Deposits in the Area of Struganik Village, Western Serbia)" in Stratigraphy and Geological Correlation, Pleiades Publishing Ltd (2020). https://doi.org/10.1134/S0869593820010037
-
The external aggregation Newton's method for solving nonlinear equations and applications
Marija Paunović, Dejan Ćebić, Nebojša Ralević. "The external aggregation Newton's method for solving nonlinear equations and applications" in The University Thought - Publication in Natural Sciences, Centre for Evaluation in Education and Science (CEON/CEES) (2020). https://doi.org/10.5937/univtho10-24982
-
Испитивање магнетске сусцептибилности прашине антропогеног порекла
... приступу. - Претрага репозиторијума доступна је на www.dr.rgf.bg.ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac ...Дубравка Новичић, Весна Цветков, Весна Дамњановић. "Испитивање магнетске сусцептибилности прашине антропогеног порекла" in VII Меморијални научни скуп из заштите животне средине доцент др Милена Далмација Нови Сад, 01-02. април 2019, Природно-математички факултет, Департман за хемију, биохемију и заштиту животне средине (2019)